1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-0.9.19 (1.0.0?) relative to sbcl-0.9.18:
3 * improvement: floating point modes in effect are now saved in
4 core, and restored on startup.
5 * improvements to the Windows port:
6 ** floating point exceptions are now reported correctly.
7 ** stack exhaustion detection works partially.
9 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
10 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
11 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
13 * bug fix: two potential GC deadlocks affecting threaded builds.
14 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
15 returns T (reported by Anton Kazennikov)
16 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
17 with non-variable places
18 * bug fix: remove a race condition in the setting of
19 funcallable-instance functions, this should make threaded CLOS
20 code more stable against memory faults.
21 * bug fix: corruption of specials when unbinding is interrupted by an
22 asynchronous unwind (reported by Hannu Koivisto)
23 * improvement: the debugger will now also display local variables that
24 are only used once, for code compiled with a DEBUG optimization quality
27 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
28 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
29 * incompatible change: External-format support for FFI calls. The
30 SB-ALIEN:C-STRING no longer implies an ASCII
31 external-format. Instead the string is subject to external-format
32 conversion. Additionally return values of type SB-ALIEN:C-STRING
33 are by default of type (SIMPLE-ARRAY CHARACTER), not
34 SIMPLE-BASE-STRING. For an alien type that behaves like the old
35 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
36 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
37 * incompatible change: SB-EXT package no longer contains the
38 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
39 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
41 * incompatible change: the single-stepper is no longer available
42 on Alpha, Mips and Sparc platforms.
43 * minor incompatible change: the direct superclasses of
44 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
45 not (STANDARD-OBJECT FUNCTION). This makes the
46 class-precedence-lists of GENERIC-FUNCTION and
47 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
49 * minor incompatible change: the default stream external format on
50 non-unicode SBCL is no longer detected from the locale, but is always
52 * new feature: Add a version of evaluator that uses an interpreter instead
53 of the compiler. EVAL still uses the compiler by default, to switch it
54 to use the interpreter, set the value of the variable
55 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
56 * minor incompatible change: the single-stepper REPL has been merged
57 with the normal debugger (see the "Stepping" heading of the debugger help
58 for more details). The debugger command STEP will no longer switch
59 to the single-stepper REPL.
60 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
62 * bug fix: loading of default sysinit file works. (thanks to Leonid
64 * bug fix: better detection of circularities in the file-compiler.
65 (reported by Marco Monteiro)
66 * bug fix: the CL pathname functions now work with files that have
67 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
68 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
69 systems with Unix98 pty semantics.
70 * bug fix: ASDF-INSTALL will now work with bsd tar.
71 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
73 * bug fix: timers expiring in dead threads no longer cause a
74 type-error (reported by Paul "Nonny Mouse").
75 * bug fix: thanks to more lightweight single-stepper instrumentation,
76 code compiled with (DEBUG 3) will compile and execute significantly faster,
77 and will have more accurate type-inferencing than before
78 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
79 whose bindings are modified
80 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
81 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
82 ** replace dummy implementations of CL:MACHINE-INSTANCE and
83 CL:SOFTWARE-VERSION with proper version
85 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
86 * feature: implemented the READER-METHOD-CLASS and
87 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
89 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
91 * optimization: faster LOGCOUNT implementation on x86 and x86-64
92 (thanks to Lutz Euler)
93 * optimization: hashing of general arrays and vectors has been
94 improved. (reported by Any Fingerhut)
95 * enhancement: SB-INTROSPECT is now able to find definitions of
96 profiled functions. (thanks to Troels Henriksen)
97 * enhancement: compiler-macro expansion applies now to FUNCALL forms
98 as well, allowing compiler-macros for SETF-functions to expand.
99 * enhancement: step-instrumentation no longer wraps known
100 single-value functions with multiple-value context, allowing
101 better type inference.
102 * fixed bug #337: use of MAKE-METHOD in method combination now works
103 even in the presence of user-defined method classes. (reported by
104 Bruno Haible and Pascal Costanza)
105 * fixed bug #339(c): if there are applicable methods not part of any
106 long-form method-combination group, call INVALID-METHOD-ERROR.
107 (reported by Bruno Haible)
108 * fixed bug #361: the :FUNCTION initarg in the protocol for
109 initialization of methods can now be used to override
110 internally-produced optimized functions. (reported by Bruno
112 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
113 system-provided lambda expression no longer cause warnings about
114 unbound #:|pv-table| symbols.
115 * bug fix: improved the handling of type declarations and the
116 detection of violations for keyword arguments with non-constant
118 * bug fix: potentially erronous calls to PATHNAME and
119 MERGE-PATHNAMES were being flushed in some cases.
120 (reported by Richard Kreuter)
121 * bug fix: compiled calls to TYPEP were mishandling obsolete
122 instances. (reported by James Bielman and Attila Lendvai)
123 * bug fix: format strings with ~> without matching ~< no longer
124 trigger an AVER, but signal an understandable error instead.
125 (reported by Antonio Martinez)
126 * bug fix: specifying an output-file without a pathname-type for
127 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
128 of input-file instead of "fasl". (reported by Robert Dodier)
129 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
130 (reported by James Y Knight).
131 * bug fix: compiler-macros-function did not consider the environment
132 argument for shadowing by local functions.
133 * bug fix: compiler-macros expansion was inhibited by local INLINE
135 * bug fix: inline expansions of known functions were subject to
136 step-instrumentation in high debug policies, leading to problems
138 * bug fix: compiler failed to differentiate between different CONS
140 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
141 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
142 * bug fix: #368: incorrect use of expressed vs. upgraded array
144 * bug fix: #306a: more precise unions of array types.
145 * thread-safety improvements:
146 ** CONDITION-WAIT could return early on Linux, if the thread was
147 interrupted and subsequently continued with SIGCONT.
148 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
150 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
151 * added support for the ucs-2 external format. (contributed by Ivan
153 * minor incompatible change: pretty printing of objects of type
154 (cons symbol) is, in the default pprint-dispatch-table, now
155 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
157 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
158 called later in a class's lifetime, possibly as late as when the
159 first instance of the class is created. Previously,
160 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
161 class became finalizeable.
162 * fixed bug: FILE-POSITION sometimes returned inconsistent results
163 for multibyte external-format streams. (thanks to "vbzoli")
164 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
165 with :ALLOCATION :CLASS inherited from superclasses of the
167 * fixed bug: anonymous classes can now be created using the :NAME
168 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
169 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
170 * fixed bug: core-files saved with :EXECUTABLE T can again be
171 executed when SBCL_HOME isn't set. (reported by James Knight)
172 * fixed bug: toplevel LOCALLY forms with declarations could
173 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
174 * fixed bug: printing from several different threads using different
175 values of *print-case* could cause invalid output, due to
176 some internal special variables of the printer not being bound
177 thread-locally (reported by Max Mikhanosha)
178 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
179 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
180 (reported by Pascal Costanza)
181 * fixed bug: FINALIZE-INHERITANCE is called from
182 REINITIALIZE-INSTANCE on classes when the class has previously
183 been finalized, as required by AMOP.
184 * minor code generation optimizations:
185 ** better register allocation in CLOS dispatching functions
186 ** overflow detection when coercing signed bytes to fixnums on x86-64
187 ** is now implemented with one IMUL instruction instead of three shifts
188 ** more efficient bit-vector access on x86 and x86-64
189 ** more efficient access to raw structure slots on x86 and x86-64
190 * fixed some bugs revealed by Paul Dietz' test suite:
191 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
194 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
195 * feature: thread support on Solaris/x86, and experimental thread support
197 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
199 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
200 default method for SLOT-UNBOUND.
201 * minor incompatible change: prevent the user from specializing the
202 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
203 somewhat counter to the intent of the protocol, I (CSR) think, and
204 additionally it just doesn't work in SBCL as currently
205 implemented, thanks to optimizations (that are always valid for
206 the other three SLOT-VALUEish functions, but not for the setter).
207 * minor incompatible change: the :SB-LDB feature is now enabled by
208 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
209 the low-level debugger.
210 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
211 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
212 down to an SB-SYS:FD-STREAM, allowing direct communication in
213 more cases. Temporary files and pipes are still used as a fallback
215 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
216 on the non-reentrant C functions localtime(3) and gmtime(3).
217 * bug fix: global optimization policy was not visible in LOCALLY and
219 * bug fix: class objects can be used as specializers in methods.
220 (reported by Pascal Costanza)
221 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
222 with a type error. (reported by blitz_ on #lisp)
223 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
224 failed with a type error. (reported by Pascal Bourguignon)
225 * bug fix: merging pathnames against defaults with :DIRECTORY
226 starting with '(:RELATIVE :BACK) should preserve the :BACK.
227 (reported by James Y Knight)
228 * bug fix: saving large (>2GB) cores on x86-64 now works
229 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
230 constant index and a (simple-array (signed-byte 32)) array
231 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
232 error (patch by Robert J. Macomber)
233 * feature: TIME now displays the amount of run-time spent in GC
234 * bug fix: The debugger now does a better job of respecting
235 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
236 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
237 workaround for bug 403.)
238 * bug fix: floating point exception handling now works on FreeBSD
239 (thanks to NIIMI Satoshi)
240 * fixed some bugs revealed by Paul Dietz' test suite:
241 ** MISC.641: LET-conversion were not supposed to work in late
243 * improvements to the Win32/x86 port:
244 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
245 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
247 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
248 * new feature: source path information is generated for macro-expansion
249 errors for use in IDE's like Slime (thanks to Helmut Eller)
250 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
251 * bug fix: compiler does not loop forever on an invalid type in
253 * improvement: compilation of most CLOS applications is significantly
255 * optimization: added a limited bytecode compiler for simple toplevel
256 forms, speeding up compilation and FASL loading
257 * bug fix: the statistical profiler now properly distinguishes anonymous
260 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
261 * minor incompatible change: in sbcl-0.9.11 (but not earlier
262 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
263 into subclasses of the finalized class. Now user calls to
264 FINALIZE-INHERITANCE finalize just the one class, and calls by the
265 system return before any subclasses are finalized.
266 * minor incompatible change: The reader no longer ignores errors
267 regarding non-existent packages in #+ and #- feature tests.
268 * new feature: command line options --no-sysinit, --no-userinit to
269 inhibit loading the corresponding init files
270 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
271 for sending data through UDP sockets (thanks to François-René Rideau)
272 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
273 error is signalled instead (thanks to François-René Rideau)
274 * minor incompatible change: Error signalling behaviour of lexical
275 operations violating package locks has changed slightly. Refer to
276 documentation on package locks for details.
277 * enhancement: EVAL can process IF-expressions without resorting to the
279 * bug fix: Some operations involving SIN, COS, or TAN weren't being
280 constant-folded properly due to missing out-of-line functions.
281 (reported by Mika Pihlajamäki)
282 * bug fix: LISTEN sometimes returned T even in cases where no data was
283 immediately available from the stream
284 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
285 were reversed. (reported by Levente Mészáros)
286 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
287 when given a vector displaced to an adjustable array. (reported
289 * bug fix: derivation of float boundaries from numbers outside the
290 appropriate float range (reported by John Wiseman)
291 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
293 * bug fix: precomputing cache entries for generic functions with
294 some subclasses of specializers as yet invalid does not attempt to
295 fill a cache line with a negative offset. (reported by Levente
297 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
298 allow condition class objects as arguments to DOCUMENTATION and
299 (SETF DOCUMENTATION); only find and set documentation for
300 structure names for the STRUCTURE doc-type. (suggested by Gary
302 * improvements to the Win32/x86 port:
303 ** (user-homedir-pathname) and default initialization file
304 locations now know about the user's "Documents and Settings"
305 directory (thanks to Yaroslav Kavenchuk)
306 ** run-program is implemented (thanks to Mike Thomas)
307 ** sockets support (thanks to Timothy Ritchey)
308 ** better backtrace support (thanks to Alastair Bridgewater)
309 ** sb-grovel supported
310 ** asdf-install and sb-posix work somewhat
311 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
312 * improvements to the Solaris/x86 port:
313 ** works on Solaris 11/Solaris Express
314 ** floating-point exception handling support
315 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
316 * fixed some bugs revealed by Paul Dietz' test suite:
317 ** REMOVE-METHOD returns its generic function argument even when
318 the method is not one of the generic functions' methods.
319 ** objects declared as MEMBER types can be admissible arguments to
321 ** printing characters should simply be printed by the FORMAT ~:C
323 ** compiler failure when compiling functions with hairy constant
324 defaults for optional parameters.
325 ** compiler produces wrong code when MAYBE-INLINE-expanding a
326 function, which is already optimized.
328 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
329 * new platform: experimental support for SBCL x86/Darwin, including
330 MacOS X 10.4.5 on Intel.
331 * new feature: Unicode character names are now known to the system
332 (through CHAR-NAME and NAME-CHAR).
333 * new feature: the filesystem location of SBCL's core file is
334 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
335 * minor incompatible change: the contrib modules SB-POSIX and
336 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
337 this change is to make it easier to distribute
338 location-independent binaries.
339 * bug fix: as implied by AMOP, standardized classes no longer have
340 slots named by external symbols of public packages. (reported by
342 * optimization: calling functions via constant symbols -- as in
343 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
344 via the function object as in (FUNCALL #'FOO).
345 * optimization: on x86 and x86-64, the calling convention for the
346 case of dealing with an unknown number of values has been altered
347 to be friendlier to the prediction heuristics implemented,
348 particularly with reference to CALL and RET pairing. (thanks to
349 Alastair Bridgewater)
350 * optimization: on x86, the code for access to thread-local symbol
351 values and binding/unbinding of thread-local symbols is smaller.
352 (thanks to Alastair Bridgewater)
353 * enhancement: CONSTANTP is now able to determine constantness of
354 more complex forms, including calls to constant-foldable standardized
355 functions and some special forms beyond QUOTE.
356 * fixed bug: occasional GC crashes on Solaris/x86
357 * optimization: x86-64 supports stack allocation of results of simple
358 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
359 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
360 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
361 (thanks to James Knight)
362 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
363 by the standard (thanks to Stephen Compall)
365 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
366 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
367 be used for bundling the runtime and the core file into one
368 executable binary. This feature is not currently supported on all SBCL
369 platforms. (thanks to James Bielman and NIIMI Satoshi)
370 * new feature: a generational or ephemeral garbage collector is now
371 the default on the PowerPC platform (both Linux and Darwin). The
372 old Cheney (stop and copy) collector is a build-time option.
373 (thanks to Cyrus Harmon, after Raymond Toy)
374 * minor incompatible change: the method by which SBCL finds its
375 contributed modules has changed; it no longer relies on symbolic
376 links from an $SBCL_HOME/systems directory, but searches directly
377 in the subdirectories of $SBCL_HOME.
378 * enhancement: the dynamic heap size on the Linux/PPC platform is
379 markedly larger, even using the older Cheney garbage collector.
380 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
381 certain complicated string types. (reported by Gary King)
382 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
383 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
384 * fixed bug: DOCUMENTATION on structures no longer signals an
385 error if no structure type of the right name exists. (reported by
387 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
388 applicable non-standard primary or :AROUND method on
389 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
390 no longer cause unbound variable errors. (reported by Kevin Reid)
391 * fixed bug: metacircle resolution in cases where methods have slots
392 added before the slots from STANDARD-METHOD. (reported by Jean
394 * fixed bug: the Power PC assembly code for calling into lisp
395 sometimes computed its return address wrongly (depending on the
396 15th bit of the address, fixed at link time). This used to
397 manifest itself in a segmentation violation while building PCL.
398 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
399 many others over the years)
400 * fixed bug: ROOM no longer reports silly numbers for stack usage if
401 the stack pointer (treated as a signed integer) is negative.
402 (thanks to Peter van Eynde)
404 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
405 * new platform: experimental support for the Windows operating
406 system has been added. (thanks to Alastair Bridgewater)
407 * fixed several bugs in and robustified the PPC FFI (including
408 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
409 * bug fix: allow non-simple string symbol names (reported by Paul
411 * bug fix: interrupt handling on NetBSD (thanks to Richard M
413 * bug fix: saving a core corrupted callbacks on x86/x86-64
414 * bug fix: closed a loophole in metacircularity detection and
415 grounding in the PCL implementation of CLOS.
416 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
417 (reported by tomppa on #lisp)
418 * bug fix: clear the direction flag on Lisp -> C transitions, as
419 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
420 (reported by Andrej Grozin and Hendrik Maryns)
421 * optimization: major improvements to GC efficiency on GENCGC platforms
422 * optimization: faster implementation of EQUAL
423 * optimization: emit more efficient opcodes for some common
424 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
425 * optimization: several other minor code-generation improvements on x86-64
426 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
428 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
429 * minor incompatible change: (SETF CLASS-NAME) and (SETF
430 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
431 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
432 by ANSI as a generic function, and for consistency (SETF
433 GENERIC-FUNCTION-NAME) is treated likewise.
434 * fixed bug #233.b: make constraint propagation notice when a variable
435 value is changed after it is referenced but before it is used
436 * fixed bug #296: no more arbitrary behaviour from filenames with
437 odd characters as --load arguments. (reported by Adam Warner)
438 * fixed bug #390: :CHARACTER-SET pathname components now work as
439 expected. (reported by Tim Daly Jr)
440 * fixed bug #391: complicated :TYPE intersections in slot
441 definitions no longer cause an error in PCL internals.
442 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
443 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
444 returning the number of octets which would be written to the
445 file-stream. (thanks to Robert J. Macomber)
446 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
447 arguments to the internal stream functions. (thanks to David
449 * bug fix: stack exhaustion is now handled on the x86/SunOS
450 platform. (thanks to Daisuke Homma)
451 * bug fix: more accurate ROOM results on GENCGC platforms
452 * optimization: improved type inference for arithmetic-for
453 index variables in LOOP
454 * optimization: faster floating-point SQRT on x86-64
455 * fixed some bugs revealed by Paul Dietz' test suite:
456 ** DOCUMENTATION returns NIL instead of "" for method combinations
457 that don't have a docstring
459 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
460 * minor incompatible change: (SETF CLASS-NAME) and (SETF
461 GENERIC-FUNCTION-NAME) are no longer generic functions, and
462 therefore are not customizeable by user code (as seems to be at
463 least permitted and maybe required by AMOP). As a consolation,
464 however, the SBCL implementation of these functions now calls
465 REINITIALIZE-INSTANCE as specified by AMOP.
466 * bug fix: slot-definition documentation is propagated as per ANSI
467 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
468 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
469 argument, as do eslotd initialization methods. (from Pascal
470 Costanza's "Closer" project)
471 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
472 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
474 * bug fix: it is now possible to have more than one subclass of
475 STANDARD-GENERIC-FUNCTION without causing stack overflow.
476 (reported by Bruno Haible, Pascal Costanza and others)
477 * bug fix: the dependent update protocol now works for generic
478 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
480 * bug fix: condition-class instances corresponding to
481 DEFINE-CONDITION forms are now created eagerly. (reported by
482 Kalle Olavi Niemitalo on comp.lang.lisp)
483 * bug fix: floating point printing is more accurate in some
484 circumstances. (thanks to Simon Alexander)
485 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
486 merged with *DEFAULT-PATHNAME-DEFAULTS*.
487 * bug fix: callbacks on OS X now preserve stack-alignment.
488 (thanks to Cyrus Harmon)
489 * enhancement: the x86-64 disassembler is much better at
490 disassembling SSE instructions. (thanks to Lutz Euler)
491 * enhancement: CHECK-TYPE on a variable now allows type-inference
492 (thanks to Vincent Arkesteijn)
493 * optimization: improved performance of EUC-JP external format.
494 (thanks to NIIMI Satoshi)
495 * optimization: performance improvements to IO on file streams of
496 :ELEMENT-TYPE CHARACTER
497 * optimization: much faster memory allocation on x86-64
498 * optimization: faster garbage collections (latency and throughput)
500 * optimization: faster bignum subtraction and division on x86 and x86-64
501 (thanks to Lutz Euler)
502 * optimization: more accurate type-inference for loops that use a
503 floating point index variable or a negative step.
505 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
506 * bug fix: add a workaround to SBCL looping infinitely at startup on
507 Linux kernels with apparently buggy implementations of personality().
508 (thanks to Svein Ove Aas)
509 * bug fix: Unicode symbols are correctly printed in LDB backtraces
510 (thanks to David Lichteblau)
511 * bug fix: local bindings shadow global symbol macros for
512 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
513 * optimization: non-open coded uses of numeric comparison operators
514 (e.g. >) no longer cons when called with more than one parameter
515 on platforms supporting dynamic-extent allocation.
516 * enhancement: saving cores with foreign code loaded is now supported
517 on MIPS/Linux in addition to the previously supported platforms.
518 * bug fix: FIND-RESTART now tests for activity, not applicability when given
519 a restart object as identifier. (reported by Helmut Eller for CMUCL)
520 * bug fix: division by zero in sb-sprof when no samples were collected
521 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
522 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
523 (thanks to Alexander Kjeldaas)
524 * new feature: ignoring the return values of destructive functions
525 like NREVERSE signals a compile-time style-warning.
526 (thanks to Kevin Reid)
527 * new feature: the alignment of alien structure fields can be
528 explicitly specified. (thanks to Cyrus Harmon)
529 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
530 and dump core on SIGQUIT
532 ** incompatible change: threads do not inherit values of specials
533 from their parents (see manual)
534 ** bug fix: threads stacks belonging to dead threads are freed by the
535 next exiting thread, no need to gc to collect thread stacks anymore
536 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
537 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
538 ** bug fix: dynamic variable and thread start related gc lossage
539 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
541 * fixed some bugs revealed by Paul Dietz' test suite:
542 ** SUBTYPEP is slightly more accurate on heinously complicated
543 CONS types where some of the members have uncertain (in the
544 NIL, NIL sense) type relationships to each other.
546 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
547 no longer purified unless :PURIFY T is explicitly specified.
548 ** Non-purified cores are significantly smaller than before
550 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
551 * new feature: timers based on Zach Beane's excellent timer package
552 * added support for the following external formats: koi8-u,
553 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
554 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
555 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
556 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
557 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
558 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
559 * incompatible change: a threaded SBCL will no longer revert to
560 non-threaded mode on non-NPTL systems, but refuse to start entirely.
561 * bug fix: interrupts are disabled until startup is complete; no
562 more sigsegvs when receiving a signal to soon
563 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
565 * bug fix: add a workaround for the memory randomization features in
566 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
567 workaround will only be in effect on systems with the proc filesystem
569 * bug fix: printing objects of type HASH-TABLE signals a
570 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
572 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
573 have been running for over 50 days. (reported by Gilbert Baumann)
574 * bug fix: the logic for getting names of functions gets less
575 confused when confronded with alternate-metaclass
576 funcallable-instances. (reported by Cyrus Harmon)
577 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
578 consistent, even on internal alternate-metaclass objects.
579 * bug fix: flush closure information collected by physical
580 environment analysis prepass before the main pass. (bug reported
582 * bug fix: compiler pack phase does not modify a hashtable, which is
583 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
584 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
585 may be expanded. (reported by Alexander <malishev> on c.l.l)
586 * bug fix: no more style-warnings when compiling code using LAST
587 under high-SPEED low-SPACE settings. (reported by David Wallin
589 * fixed some incompatibilities between SBCL's MOP and the MOP
591 ** the METAOBJECT class is now implemented;
592 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
593 STANDARD-OBJECT, as required;
594 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
595 now compatible (as required by VALIDATE-SUPERCLASS); there
596 remains a consistency requirement over the presence or absence
597 of the FUNCTION class in the superclass list of finalized
598 classes; see the manual for more details;
599 ** the :AROUND method for COMPUTE-SLOTS on
600 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
601 requested slot ordering.
603 ** bug fix: parent thread now can be gc'ed even with a live
605 ** bug fix: binding a special with PROGV to no value is not
606 the same as that symbol not having been bound (thanks to
608 ** bug fix: binding specials is thread safe (thanks to
610 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
611 and SB-SPROF do not die with 'no handler for signal XX in
612 interrupt_handle_now(..)' anymore
613 ** bug fix: WITH-TIMEOUT works with multiple running threads
614 * fixed some bugs revealed by Paul Dietz' test suite:
615 ** ENSURE-GENERIC-FUNCTION should take a method class object for
616 the :method-class keyword argument.
618 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
619 * new port: the Solaris operating system on x86 processors is now
620 mostly supported, though some rough edges in the environment
621 remain. (thanks to Daisuke Homma)
622 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
623 space for its heap. (thanks to Thiemo Seufer)
624 * optimization: SBCL on MIPS platforms now supports dynamic-extent
625 closures. (thanks to Thiemo Seufer)
626 * minor incompatible change: eof selects abort in the debugger.
627 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
628 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
630 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
631 deprecated, and will go away in a future revision of SBCL.
632 * minor incompatible change: GC-ON and GC-OFF are no longer
633 implemented with a counter, it does not matter how many times gc
634 is switched on or off
635 * bug fix: discriminating functions for generic function classes
636 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
637 make invalid assumptions about method precedence order. (reported
639 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
640 platforms. (thanks to Thiemo Seufer)
641 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
642 * bug fix: correct pathname printing with printer escaping is on.
643 (thanks to Kevin Reid)
644 * bug fix: complex VOP definitions in "user-space" no longer trigger
645 package locks. (reported by Zach Beane)
646 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
647 for funcallable-instance functions, and is no different from
649 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
650 characters in the current readtable. (reported by Nicholas Neuss)
651 * bug fix: SUBTYPEP on various CONS types returns more a more
652 accurate acknowledgment of its certainty.
653 * optimizations: REMOVE-DUPLICATES now runs in linear time on
654 lists in some cases. This partially fixes bug 384.
655 * flush all standard streams before prompting in the REPL and the
657 * bug fix: signal handling and triggering gc do not conflict
658 directly anymore, in particular a high frequency sb-sprof does
659 not prevent gc from running
660 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
661 approximation for timezone and DST information between the
662 universal time epoch and the smallest negative 32-bit time_t.
663 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
664 year 1899 so long as the encoded time is non-negative.
665 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
666 the correct answer for non-constant rotate amounts when performing
667 an inline 32-bit rotation.
669 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
670 there is only one thread in the session
671 ** bug fix: memory leak for streams created in one thread and
672 written to in another
673 ** bug fix: lockup when compiled with gcc4
674 ** bug fix: race that allows the gc to be triggered when gc is
676 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
677 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
679 ** bug fix: finished threads are gc'ed properly
680 * fixed some bugs revealed by Paul Dietz' test suite:
681 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
682 has arguments with a different set of applicable methods from
683 the orignal arguments.
684 ** The type error thrown by MAP now has a correct expected-type
686 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
687 name a compiled function.
688 ** Three MISC tests where a large bignum was improperly coerced to
689 a float that couldn't represent that bignum during type
690 derivation were fixed.
691 ** SUBTYPEP can now handle types involving the negation of a
692 list-form FUNCTION type.
693 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
694 as (COMPLEX (AND RATIO (NOT FIXNUM))).
695 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
697 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
698 * New feature: Experimental support for bivalent streams: streams
699 opened with :element-type :default now allow character and binary
700 (unsigned-byte 8) I/O
701 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
702 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
704 * bug fix: no more highly sporadic "couldn't check whether ~S is
705 readable" when reading a stream and an interrupt hits in the middle
706 of a select system call
707 * compiler better recognizes complex arrays (reported by Eduardo
709 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
710 for variables on SBCL built with linkage-tables. (reported by Luis
712 * various error reporting improvements.
713 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
714 (Thanks to Thiemo Seufer)
715 * bug fix: nested reader invokations work correctly
716 * bug fix: it is possible to have simultaneous references to foreign
717 code and foreign data with the same name.
719 ** added x86-64 support
720 ** incompatible change: the threading api now works with thread
721 objects instead of thread ids
722 ** bug fix: threads are protected from signals and interruption when
723 starting up or going down
724 ** bug fix: a race where an exiting thread could lose its stack to gc
725 ** bug fix: don't halt on infinite error in threads if possible
726 ** fixed numerous gc deadlocks introduced in the pthread merge
727 ** bug fix: fixed thread safety issues in read and print
728 ** bug fix: debugger doesn't hang on session lock if interrupted at
729 an inappropriate moment
730 ** bug fix: run-program is now thread safe(r)
731 ** bug fix: inner with-recursive-lock no longer releases the mutex
732 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
733 * fixed some bugs revealed by Paul Dietz' test suite:
734 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
735 EXPECTED-TYPE slots filled.
736 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
738 ** MAKE-CONDITION accepts classes as type-designators.
739 ** COMPILE may never return NIL.
740 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
741 range before calling Unix time functions
743 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
744 * numerous signal handling fixes to increase stability
745 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
746 * minor incompatible change: we now correctly canonize default
747 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
748 as per the MOP, rather than the historical (INITARG INITFUNCTION
749 INITFORM). (reported by Bruno Haible)
750 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
751 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
752 for more information.
753 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
754 pathname is a directory pathname.
755 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
756 * dynamic space size on PPC has been increased to 768Mb. (thanks to
758 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
759 :METACLASS argument in addition to a class name. (reported by
760 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
761 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
762 (reported by Bruno Haible; patch from Gerd Moellmann)
763 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
765 * bug fix: more cleanups to the floating point exception handling on
766 x86-64 (thanks to James Knight)
767 * bug fix: the compiler does not try to constant fold calls of
768 COERCE and BIT-* functions when they return freshly constructed
769 objects. (reported by Nikodemus Siivola and Paul Dietz)
770 * optimization: improved the MIPS versions of generic (in the
771 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
772 * optimization: direct conversion of (unsigned-byte 32) to floats on
773 the PowerPC platform.
774 * optimization: structure instances with raw slots now use less
775 memory, and probably show better memory locality. (thanks to
777 * optimization: DYNAMIC-EXTENT declarations for lists and closures
778 are treated as requests for stack allocation on the x86-64,
779 Alpha-32, PPC and SPARC platforms.
780 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
781 the wrong file descriptor; implementation of SOCKET-OPEN-P.
782 (thanks to Tony Martinez)
784 ** gcing a dead thread can no longer lead to lockups
785 ** threads block signals until they are set up properly
786 ** errno is no longer shared by threads
787 ** interrupt-thread restores the eflags register on x86
788 ** fixed some lockups due to gc/thread interaction
789 * fixed some bugs revealed by Paul Dietz' test suite:
790 ** invalid dotted lists no longer raise a read error when
792 ** signal an error if a symbol that names a declaration is used
793 as the name of a type, or vice versa
794 ** allow using the (declare (typespec var*)) abbreviation for
795 (declare (type typespec var*)) with all type specifiers
796 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
797 ** always return NIL from PPRINT-POP when OBJECT is NIL
798 ** don't signal errors when pretty-printing malformed LABELS,
799 FLET or MACROLET forms
800 ** declarations in a DOLIST body are also in scope for the
802 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
804 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
807 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
808 * fixed cross-compiler leakages that prevented building a 32-bit
809 target with a 64-bit host compiler.
810 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
811 opened with :IF-EXISTS :OVERWRITE.
812 * fixed bug 281: error for an invalid qualifier in a short-form method
813 combination method is not signalled until the faulty method is called.
814 * bug fix: iteration variable type inferrer failed to deal with open
815 intervals. (reported by Alan Shields)
816 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
817 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
818 or more runtime options were provided to the sbcl binary.
819 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
820 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
821 * optimization: there's now a fast-path for fixnum arguments in the
822 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
823 * optimization: the code generated on x86-64 is more compact thanks
824 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
825 * bug fix: floating-point exception handling now partly works on
826 x86-64. (Thanks to James Knight)
827 * improvement to the MIPS backend from Thiemo Seufer: C-style
828 64-bit long long arguments and return values to alien functions
830 * fixed some bugs revealed by Paul Dietz' test suite:
831 ** the type-error signalled from WARN has a filled-in DATUM slot.
832 ** the type-error required when a stream is not associated with
833 a file has the stream as its datum.
834 ** type-errors on single-floats on x86-64 no longer have
835 :INVALID-OBJECT as the datum
836 ** the type-errors signalled for invalid function names now have
837 a correct expected type
838 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
839 for structures defined with a :TYPE. Documentation strings for
840 typed structures are no longer immediately discarded
841 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
842 broadcast streams and synonym streams. FILE-LENGTH now also works
843 on broadcast streams.
845 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
846 * incompatible change: the --noprogrammer option, deprecated since
847 version 0.7.5, has been removed. Please use the equivalent
848 --disable-debugger option instead.
849 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
851 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
852 inoperational for a while now) has been completely removed.
853 * null lexical environments are now printed as #<NULL-LEXENV>,
854 significantly reducing the amount of clutter in typical backtraces.
855 * documentation on weak pointers, finalization, and after GC hooks
856 has been added to the manual.
857 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
858 as other specialized array types, is much faster. SUBSEQ and
859 COPY-SEQ on such arrays have also been sped up.
860 * optimization: EQL is now more efficient when at least other argument
861 is known to be of type (OR FIXNUM (NOT NUMBER)).
862 * fixed bug: the runtime is now less vulnerable to changes in the
863 size of the SBCL object on OS X, and virtual memory is reserved for
864 all spaces that need to be at a fixed address.
865 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
866 * fixed bug: finalizers and after GC hooks that cause consing are now
868 * fixed bug: compiler error messages and summaries are now printed to
869 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
870 * fixed inference of the upper bound of an iteration variable.
871 (reported by Rajat Datta).
872 * fixed bug 211e: calling local functions with duplicated constant
873 keyword argument no longer causes a bogus style warning about an
875 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
876 ftype declaration to be disregarded. (reported by Dave Roberts)
877 * fixed bug 373: caused by erronous compilation of references to alien
878 variables in the runtime on ppc/darwin.
879 * fixed bug 376: CONJUGATE type deriver.
880 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
881 (reported by Baughn on #lisp)
882 * a cross-compiler bug on non-x86 platforms has been identified and
883 fixed. (thanks to Bruno Haible)
884 * improvements to the MIPS runtime code for increased stability.
885 (thanks to Thiemo Seufer)
886 * increased the maximimum compact environment size to allow
887 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
888 * partial workaround for bug 135: don't name the function we're
889 calling for hairy cases of EVAL, so as not to accumulate one environment
890 entry per call to EVAL. (reported by Kevin Reid)
891 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
892 * optimization: type testing for non-vector arrays should be faster.
893 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
895 * bug fix: setting 31st element of a bit vector to zero did not work
897 * bug fix: redefining a class definition which failed due to a
898 previous accessor / function clash now works (but see BUGS entry
899 #380 for more problems in this area). (thanks to Zach Beane)
900 * the long form of DEFINE-METHOD-COMBINATION disables method group
901 checking when given a single method group with pattern *. (thanks
903 * on x86 compiler supports stack allocation of results of simple
904 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
905 * support for building and running on Mac OS X 10.4 "Tiger" has been added
906 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
907 * fixed some bugs related to Unicode integration:
908 ** the restarts for recovering from input and output encoding
909 errors only appear when there is in fact such an error to
911 * fixed some bugs revealed by Paul Dietz' test suite:
912 ** MISC.549 and similar: late transformation of unsafe type
913 assertions into derived types caused unexpected code
915 ** SCALE-FLOAT type deriver is less wrong.
916 ** type derivers for EXP, LOG and similar functions compute result
917 types for complex arguments better.
918 ** (MISC.563) CONJUGATE type deriver works for very restricted
920 ** out-of-line type testers for character strings are available.
921 ** EQUAL compiler transform understands specialness of objects
923 ** accessing double-floats stored on the stack now works on x86-64.
924 ** debugger internals could sometimes create invalid lispobjs,
925 resulting in GC crashes.
926 ** MISC.548: type check weakening can convert required type into
928 ** initialization forms for bindings are not in scope of free special
931 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
932 * incompatible change: thread support for non-NPTL systems has
933 been removed - locking is buggy and unreliable. A threaded
934 SBCL build will now warn at startup and refuse to create
935 new threads, unless futex support is detected in the kernel
936 * incompatible change: the top level REPL now has only an ABORT
937 restart associated with it, not TOPLEVEL and ABORT as it used to.
938 TOP and TOPLEVEL are now available as debugger commands for
939 returning to the top level.
940 * incompatible change: forms evaluated in the REPL now use the
941 global optimization policy.
942 * incompatible change: user- and system-initialization files are
943 no longer processed with LOAD, but by READ and EVAL; hence the
944 global optimization policy, startup package, readtable, etc,
946 * The .fasl file format number has been incremented because of
947 various incompatible changes.
948 * internal entry point details and argument counts no longer appear
949 in backtraces unless explicitly requested by setting
950 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
951 * built-in and standard functions no longer have names like "top
952 level local call to FOO".
953 * fixed bug 32: functions defined in non-null lexical environments
954 now have more legible printed representation
955 * fixed bug 33: functions defined in non-null lexical environemnts
956 are now more amenable to inspection by INSPECT.
957 * workaround for bug 354: XEPs no longer appear in backtraces unless
958 explicitly requested.
959 * fixed bug: receiving the signal which results from attempting to
960 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
961 SIGBUS on other *BSDs) on architectures where the C stack is also
962 the Lisp stack (x86 and x86-64) from foreign code no longer leads
963 to debugger confusion or wild instability. (reported by Cheuksan
965 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
966 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
967 (reported by Lutz Euler)
968 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
969 compiled code. (reported by Paul Dietz)
970 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
971 specialized parameter to a method to something that is not TYPEP
972 the specializer is now possible.
973 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
974 face of package deletion.
975 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
976 pathname. (reported by David Tolpin on c.l.l)
977 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
978 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
979 STRING-STREAM and FILE-STREAM, respectively.
980 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
981 than previously; in addition, its test suite is now run on build.
982 (thanks to Luke Gorrie)
983 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
984 * optimization: added a immediate representation for single-floats
986 * fixed some bugs revealed by Paul Dietz' test suite:
987 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
988 ** attempting to create a package with a colliding nickname causes
989 correctable errors to be signalled.
990 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
991 ** several x86-64 backend bugs related to sign-extension of immediate
994 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
995 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
996 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
998 * fixed loading of multiply forward-referenced layouts.
999 (thanks to Cheuksan Wang)
1000 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1001 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1002 (see COMPILE-FILE documentation for details of :PRINT option)
1003 * fixed bugs 19 and 317: fixed-format floating point printing is
1004 more accurate. This also fixes a bug reported by Adam Warner
1005 related to the ~@F format directive.
1006 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1008 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1009 dispatch table if the from-char is a dispatch macro character.
1010 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1011 by the wordsize no longer ignore the last word. (reported by Lutz
1013 * fixed bug in type checking of dynamic-extent variables. (reported
1015 * optimization: sequence traversal functions use their freedom to
1016 coerce function designators to functions.
1017 * optimization: code with many calls to CLOS methods specialized on
1018 CLOS classes has had redundant type checks removed.
1019 * optimization: added declarations to speed up operations that access
1020 the internal character database (for example STRING-UPCASE)
1021 * optimization: comparison operations between floats and sufficiently small
1022 fixnums no longer create extra rationals
1023 * fixed some bugs related to Unicode integration:
1024 ** portions of multibyte characters at the end of buffers for
1025 character-based file input are correctly transferred to the
1026 start of the buffer at the next read.
1027 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1028 passing it through to OPEN.
1029 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1030 argument given to internal calls to OPEN.
1031 ** the built-in comment readers (introduced by character sequences
1032 ";" and "#|") are more forgiving to encoding errors; they will
1033 STYLE-WARN and then attempt to resync the stream at a character
1034 boundary. (thanks to Teemu Kalvas)
1035 * fixed some bugs in the x86-64 port:
1036 ** Negative short int return values from c-calls are sign-extended
1038 ** The stack is aligned to 16-bytes for c-calls, as required by
1039 the ABI. (thanks to Cheuksan Wang)
1040 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1041 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1042 for enums. (thanks to Vincent Arkesteijn)
1043 ** Multiple small optimizations and bugfixes for floating point
1045 * fixed some bugs revealed by Paul Dietz' test suite:
1046 ** Space, Tab, Linefeed, Return and Page have the invalid
1047 secondary constituent character trait.
1048 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1050 ** WITH-INPUT-FROM-STRING should only update the index place on
1052 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1053 works more reliably.
1054 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1055 with one-dimensional arrays with fill pointers.
1056 ** TYPE-OF failed on a complex with an integer realpart and a
1058 ** compiler failure during type inference for the code of form
1059 (IF (EQL X (THE ...)) ...) (MISC.535).
1061 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1062 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1063 platform. The port supports 61-bit fixnums, large memory spaces
1064 and reloading shared object files.
1065 * enhancement: saving cores with foreign code loaded is now
1066 supported on ppc/Darwin in addition to the previously supported
1068 * enhancement: the statistical profiler now walks deeper into the
1069 call stack for more meaningful call-graphs and accrued time
1070 reports (x86/x86-64 only). It also now reports time spent in
1072 * enhancement: it is now possible to trace most individual methods
1073 of a generic function in addition to tracing the generic function
1075 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1077 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1078 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1079 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1080 produces an error. (thanks to Vincent Arkesteijn)
1081 * bug fix: NAMESTRING on pathnames with :WILD components in their
1082 directories works correctly. (thanks to Artem V. Andreev)
1083 * fixed bug 125: compiler preserves identity of closures. (reported
1085 * bug fixed: functions with &REST arguments sometimes failed with
1086 "Undefined function" when compiled with (DEBUG 3). (reported by
1088 * bug fix: overflow during compiling of setting element of a bit
1089 vector with constant index and value. (reported by Timmy Douglas)
1090 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1091 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1092 * on x86 compiler partially supports stack allocation of dynamic-extent
1094 * GO and RETURN-FROM do not check the extent of their exit points
1095 when compiled with SAFETY 0.
1096 * fixed some bugs related to Unicode integration:
1097 ** encoding and decoding errors are now much more robustly
1098 handled; it should now be possible to recover even from invalid
1099 input or output to the terminal. (thanks to Teemu Kalvas)
1100 ** provided a first cut at implementing STRING-TO-OCTETS and
1101 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1102 ** altered the SB-MD5 contributed module slightly, changing the
1103 interface just enough for it to be supportable for builds where
1104 lisp characters are not eight bits.
1105 * fixed some bugs revealed by Paul Dietz' test suite:
1106 ** the FORMATTER-generated functions for ~V[ conditionals require
1107 the correct number of arguments.
1108 ** READ-FROM-STRING returns the mandated second value when applied
1109 to displaced strings.
1110 ** the #\Rubout and #\Backspace characters are treated as invalid
1111 constituent characters by the tokenizer.
1113 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1114 * new feature: reloading changed shared object files with
1115 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1116 * new feature: references to foreign variables and functions
1117 can now be compiled and loaded before the corresponding shared
1118 object file is loaded, as long as the foreign definitions are
1119 available at runtime.
1120 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1121 supported. (thanks to Dan Debertin)
1122 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1123 just keywords. (thanks to Vincent Arkesteijn)
1124 * fixed bug #331: structure-class instances corresponding to
1125 DEFSTRUCT forms are now created eagerly.
1126 * fixed bug #345: backtraces from calls to undefined functions work
1127 on x86 as well. Related bug #61 is now also partially fixed on x86
1128 (backtraces from throws to unknown catch tags.)
1129 * bug fix: lambda-list parsing is now stricter vrt. order and number
1130 of lambda-list keywords.
1131 * bug fix: as specified by AMOP, an error is signalled if a
1132 class-option appears multiple times in a DEFCLASS form. (reported
1134 * bug fix: RANDOM can be compiled when the compiler derives the type
1135 of its numeric argument as a disjoint set of small integers.
1136 (reported by Paul Dietz)
1137 * bug fix: starting a core saved with shared objects loaded when
1138 those objects are not available no longer causes threaded SBCL to
1139 hang. (reported by Sean Ross)
1140 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1142 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1143 argument, which must always be NIL. (reported by Kalle Niemitalo)
1144 * bug fix: printing 1.0d+23 no longer results in an error.
1145 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1146 * bug fix: structure slot setters preserve evaluation order. (thanks
1148 * fixed some bugs related to Unicode integration:
1149 ** RUN-PROGRAM can allow its child to take input from a Lisp
1150 stream. (reported by Stefan Scholl)
1151 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1152 locales. (reported by Ken Causey)
1153 * fixed some bugs revealed by Paul Dietz' test suite:
1154 ** INCF, DECF and REMF evaluate their place form as specified in
1156 ** FORMATTER expands ~{ ~} iteration directives with V or #
1157 parameters correctly.
1158 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1159 consequent uses no arguments correctly.
1160 ** the system has a partial understanding of the (COMPLEX RATIO)
1162 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1165 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1166 * new feature: a build-time option (controlled by the :SB-UNICODE
1167 keyword feature, enabled by default) for building the system with
1168 support for the entire 21-bit character space defined by the
1170 * new feature: the system now has rudimentary external-format
1171 support; the primary user-visible change at this time is that
1172 characters with the high bit set (such as lower-case-e-acute) will
1173 print correctly to a terminal in a UTF-8 environment.
1174 * minor incompatible change: BASE-CHAR no longer names a class;
1175 however, CHARACTER continues to do so, as required by ANSI.
1176 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1177 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1178 has been moved to the SB-EXT package (temporarily re-exported from
1180 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1181 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1183 * fixed bug #351: better error-handlind and reporting for malformed
1185 * fixed bug #350: bignum-printing is now more memory-efficient,
1186 allowing printing of very large bignums, eg. (expt 2 10000000).
1187 (reported by Bruno Haible)
1188 * fixed bug #302: better primitive-type selection for intersection
1190 * fixed bug #308: non-graphic characters now all have names, as
1191 required. (reported by Bruno Haible)
1192 * bug fix: redefining a class with different superclasses now correctly
1193 removes it from the direct-subclasses of its previous superclasses.
1194 (reported by David Morse)
1195 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1196 new value now works. (reported by Bruno Haible)
1197 * bug fix: correct canonicalization of multiple non-standard slot
1198 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1199 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1200 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1201 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1202 now exists, an signals an error.
1203 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1204 during macroexpansion for non-iteration variables as well. (reported
1205 by Bruno Haible for CMUCL)
1206 * bug fix: Cyclic structures and unprintable objects in compiler
1207 messages no longer cause errors. (reported by Bruno Haible)
1208 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1209 and READ-FROM-STRING all now return a primary value of NIL if
1210 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1211 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1212 (reported by Bruno Haible for CMUCL)
1213 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1214 do not designate a condition. (reported by Bruno Haible for
1216 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1217 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1218 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1219 permitting resolution in favour of any of the conflicting symbols.
1220 (reported by Bruno Haible for CMUCL)
1221 * bug fix: EQUAL compiler optimizations is less aggressive on
1222 strings which can potentially compare true despite having distinct
1223 specialized array element types.
1224 * bug fix: unit enumerations can be defined without dividing by
1225 zero. (thanks to Vincent Arkesteijn)
1226 * FORMAT compile-time argument count checking has been enhanced.
1227 (report from Bruno Haible for CMUCL)
1228 * a partial workaround for the bug 262: the compiler does not try to
1229 inline-expand a local function doing RETURN-FROM from a deleted
1230 BLOCK. (thanks to Peter Denno for the bug report and to David
1231 Wragg for the simple test case)
1232 * fixed some bugs revealed by Paul Dietz' test suite:
1233 ** RENAME-PACKAGE allows all package designators as new package
1235 ** constraint propagation and lambda variable substitution are
1236 more cautious in dealing with partially deleted code.
1237 ** compiler sometimes lost reoptimization passes.
1238 ** CERROR, given a condition as condition designator, passes its
1239 remaining arguments to the continue format control without
1241 ** Case-altering FORMAT directives work correctly on non-ASCII
1243 ** The REAL type specifier handles bounds outside the floating
1244 point ranges without signalling FLOATING-POINT-OVERFLOW.
1245 ** Functions with IR1-transformations can create intercomponent
1246 references to global functions.
1247 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1249 ** FORMAT ~R treats a nil value for its first parameter correctly.
1251 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1252 * enhancement: saving cores with foreign code loaded is now
1253 supported on x86/NetBSD and sparc/Linux in addition to the previously
1254 supported platforms.
1255 * bug fix: on some platforms repeated installations caused multiple
1256 copies of HTML documentation to be installed -- should not happen
1257 any more. (reported by Stefan Scholl)
1258 * bug fix: parsing self-recursive alien record types multiple times
1259 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1260 original patch by Helmut Eller for CMUCL)
1261 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1262 (thanks to Richard Kreuter)
1263 * bug fix: defining classes whose accessors are methods on existing
1264 generic functions in other (locked) packages no longer signals
1265 bogus package lock violations. (reported by François-René Rideau)
1266 * bug fix: special variables as DEFMETHOD parameters no longer have
1267 associated bogus type declarations. (reported by David Wragg and
1269 * bug fix: read-write consistency on streams of element-type
1270 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1271 * bug fix: redefiniton of the only method of a generic function with
1272 no DEFGENERIC no longer emits a full WARNING. In addition,
1273 redefinition of generic functions with no DEFGENERIC to an
1274 incompatible lambda list now signals an error. (thanks to Zach
1276 * bug fix: DEFGENERIC now works even when there's a function of the
1277 same name in an enclosing lexical environment. (thanks to Zach
1279 * fixed compiler failure, caused by instrumenting code during
1280 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1281 * optimization: added loop analysis and improved register allocation
1282 * fixed some bugs revealed by Paul Dietz' test suite:
1283 ** POSITION on displaced vectors with non-zero displacement
1284 returns the right answer.
1285 ** (SIMPLE-STRING) is a valid type specifier for sequence
1287 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1289 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1290 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1292 ** The justification version of the FORMAT ~< directive treats
1293 non-zero minpad parameter correctly.
1295 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1296 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1297 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1298 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1299 the supported interface.
1300 * new feature: Single-stepping of code compiled with DEBUG 2 or
1301 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1302 * new feature: saving cores with foreign code loaded is now
1303 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1304 Timothy Moore's work for CMUCL)
1305 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1306 parameters to * instead of NIL if no initform is supplied.
1307 (reported by Johan Bockgaard)
1308 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1309 correctly when FUNCALL appears as the car of the form. Note:
1310 despite this FUNCALL forms are not currently subject to
1311 compiler-macro expansion. (port of Raymond Toy's fix for the
1312 same from CMUCL, reported by Johan Bockgaard)
1313 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1314 (thanks for Teemu Kalvas)
1315 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1316 case instead of terminating the iteration (thanks for Julian
1317 Squires, Sean Champ and Raymond Toy)
1318 * bug fix: incorrect expansion of defgeneric that caused a style
1319 warning. (thanks for Zach Beane)
1320 * bug fix: slot accessor effective method computation works properly
1321 for classes with multiple non-standard applicable methods on
1322 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1323 * on x86 compiler supports stack allocation of results of LIST and
1324 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1325 CMUCL implementation by Gerd Moellmann)
1326 * fixed some bugs revealed by Paul Dietz' test suite:
1327 ** FORMAT strings with both the ~<~:;~> form of the justification
1328 directive and pretty-printing directives cause an error.
1330 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1331 * incompatible change: the internal functions
1332 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1333 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1334 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1335 instead of the old functions.
1336 * new feature: on platforms where "dladdr" is available foreign
1337 function names now appear in backtraces. (based on Helmut Eller's
1339 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1340 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1342 * documentation: ASDF manual is now distributed with SBCL.
1343 * bug fix: SBCL can now load its contributed modules with REQUIRE
1344 even if the system-provided entries have been removed from
1345 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1347 * bug fix: backtraces involving undefined functions or assembly
1348 routines are more informative. (thanks to Brian Downing)
1349 * bug fix: mutually referent alien structures now work correctly.
1350 (reported by Rick Taube)
1351 * bug fix: structures defined by WITH-ALIEN can be referred to
1352 within other definitions in the same WITH-ALIEN.
1353 * bug fix: division operators (MOD, TRUNCATE and the like) with
1354 constant zero divisors and integer dividends no longer generate
1356 * bug fix: provide default methods for INPUT-STREAM-P and
1357 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1358 * bug fix: improve the detection and resolution of MOP metacycles
1359 (where effective method computation depends on the generic function
1360 having its effective method computed). (reported by Bruno Haible)
1361 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1362 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1363 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1364 * bug fix: pathnames with relative directory components can be
1365 represented relative to default pathnames.
1366 * optimization: in taking the GCD of bignums, reduce the two bignums
1367 to approximately the same size (using Euclid's algorithm) before
1368 applying the more sophisticated binary GCD. (thanks to Juho
1370 * optimization: COUNT on bitvectors now operates word-at-a-time.
1371 * optimization: ASH with a positive, but not necessarily constant,
1372 (leftwards) shift, when in a modular context, is compiled to a
1374 * fixed some bugs revealed by Paul Dietz' test suite:
1375 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1376 if the corresponding argument is NIL.
1377 ** FORMAT directives accepting a minpad parameter treat negative
1379 ** literal commas as character parameters to FORMAT directives are
1381 ** literal spaces directly after ~<Newline> directives within a
1382 format-logical-block (~:< ~@:>) do not induce :FILL-style
1383 conditional newlines.
1384 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1385 as specified: it no longer includes conditional newlines).
1386 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1388 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1389 :PER-LINE-PREFIX argument does not evaluate to a string.
1391 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1392 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1393 the manual for details; for now, package locks can be disabled by
1394 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1395 if no major problems are found then it is likely that they will be
1396 compiled in unconditionally.
1397 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1398 unsupported operators on all platforms. To load a shared library
1399 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1400 object file, link it into a shared library outside of SBCL and
1401 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1403 * bug workaround: ROOM T and the GC were not working together
1404 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1405 reporting facility aren't preserved. That reporting has been
1406 disabled, so now until and unless someone figures out how to make it
1407 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1408 * minor incompatible change: as threatened around sbcl-0.8.0, the
1409 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1410 The symbols are also exported from SB-PCL for backwards
1411 compatibility, but more so than before SB-PCL should be treated as
1412 an implementation-internal package.
1413 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1415 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1416 It is known as of this release not to work on the Alpha, however.
1417 * fixed bug #167: errors signalled due to illegal syntax in method
1418 bodies are now more legible.
1419 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1420 designators and can hence be used with TYPEP.
1421 * fixed bug #333: CHECK-TYPE now ensures that the type error
1422 signalled, if any, has the right object to be accessed by
1423 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1424 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1425 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1427 * fixed bug #334: programmatic addition of slots using specialized
1428 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1429 and :ALLOCATION :CLASS slots.
1430 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1431 float exponents. (rereported by Peter Seibel)
1432 * fixed a bug: #\Space (and other whitespace characters) are no
1433 longer considered to be macro characters in standard syntax by
1434 GET-MACRO-CHARACTER.
1435 * fixed bug: initialization of condition class metaobjects no longer
1436 causes an instance of the condition to be created. (reported by
1438 * fixed bug: it is now possible to have slots such that
1439 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1440 description is neither :INSTANCE nor :CLASS.
1441 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1442 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1443 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1444 non-standard SLOT-DEFINITION-ALLOCATION values.
1445 * fixed bugs: various race conditions handling exiting threads.
1446 CL-PPCRE's thread torture test now passes.
1447 * fixed arguably-a-bug: GC time proportional to number of threads in
1448 system even when most of them are idle
1449 * optimization: improved performance of BIT and SBIT on bit-vectors.
1450 * .fasl file incompatibility: The fasl file version number has
1451 been incremented because of changes associated with package locks.
1453 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1454 * minor incompatible change: the system no longer provides
1455 optimization hints (conditions which are TYPEP
1456 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1457 mode; these hints are still emitted when higher SPEED optimization
1459 * new contrib module: a sampling profiler (profiling by statistical
1460 sampling, rather than by instrumenting functions) is available as
1461 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1462 * the behaviour of the standard function ED is now customizeable by
1463 third parties through a hook variable: see ED's documentation
1464 string for information on the protocol.
1465 * the compiler no longer emits efficiency notes for (FUNCALL X)
1466 when the type of X is uncertain under default optimization
1468 * fixed bug 276: mutating a binding of a specialized parameter to a
1469 method to something that is not TYPEP the specializer is now
1471 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1472 exhibit the required behaviour on the x86 platform. (thanks to
1473 Peter van Eynde, Eric Marsden and Bruno Haible)
1474 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1475 even for difficult arguments. (reported by Peter Graves)
1476 * fixed bug 141a: the backquote printer now descends quoted
1478 * fixed another bug in backquote printing: no more destructive
1479 modification of the form's list structure. (reported by Brian
1481 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1482 move between its address being taken and the call to
1483 interrupt_thread, fixing a crashing race condition.
1484 * the SB-POSIX contrib implementation has been adjusted so that it
1485 no longer exhibits ridiculously poor performance when constructing
1486 instances corresponding to C structs.
1488 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1489 * minor incompatible change: the sb-grovel contrib now treats C
1490 structures as alien (in the sense of SB-ALIEN) objects rather than
1491 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1492 has implications for memory management of client code
1493 (sb-grovel-returned objects must now be manually managed) and for
1494 type safety (alien objects now have full types).
1495 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1496 used to control emission of compiler diagnostics, rather than the
1497 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1498 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1499 quality should be considered deprecated.
1500 * install.sh now installs the user manual as well
1501 * (not quite a new documentable feature, but worth considering in
1502 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1503 beginnings of a semantically meaningful condition hierarchy is
1504 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1506 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1507 designator as the defaults argument.
1508 * fixed bug: Displaced arrays whose displaced-to array has become
1509 too small now cause ARRAY-DIMENSION to signal an error, providing
1510 for safer bounds-checking. (reported by Bruno Haible)
1511 * fixed bug: DEFCLASS slot definitions with identical :READER and
1512 :WRITER names now signal a reasonable error. (reported by Thomas
1514 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1516 * fixed bug: Invalid slot specification errors now print correctly.
1517 (thanks to Zach Beane)
1518 * fixed bug 320: Shared to local slot value transfers in class
1519 redefinitions now happen corrently from superclasses as
1520 well. (reported by Bruno Haible)
1521 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1523 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1524 improper lists correctly. (reported by Bruno Haible)
1525 * fixed bug 313: source-transform for <fun-name> was erroneously
1526 applied to a call of a value of a variable with name <fun-name>.
1527 (reported by Antonio Menezes Leitao)
1528 * fixed bug 307: The obsolete instance protocol ensures that
1529 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1530 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1531 remove dead unknown-values globs from the middle of the stack.
1532 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1533 easier to resume long computations after using *BREAK-ON-SIGNALS*
1534 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1535 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1536 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1537 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1538 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1539 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1541 * fixed a (fairly theoretical) bug in string printing: if
1542 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1543 does not have array-element-type equal to the most general string
1545 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1546 function name. (thanks to Nikodemus Siivola)
1547 * fixed bug: compile-time format string checker failed on
1548 non-closed ~{. (reported by Thomas F Burdick)
1549 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1550 don't warn on legal loop code involving more than one aggregate
1551 boolean. (thanks to Nikodemus Siivola)
1552 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1553 in keyword position to MAKE-PACKAGE was not being reported as
1555 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1556 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1558 * fixed bugs 280 and 312: the checking for multiple definitions in a
1559 file is less likely to become confused by uses of inline
1561 * fixed bug: the #S reader macro performs the keyword coercion
1562 specified for slot names. (reported by Kalle Niemitalo)
1563 * fixed bug: lambda lists may contain symbols whose names start with
1564 & but are not lambda-list-keywords; their occurrence triggers a
1566 * fixed bug 321: define-method-combination argument lambda lists do
1567 not cause invalid code to be generated when &optional or &aux
1568 variables have default values. (reported by Bruno Haible)
1569 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1570 have CLOS classes; this appears also to have fixed reported
1571 instability in stack exhaustion detection.
1572 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1573 MUFFLE-WARNING when no associated restart is present is now
1575 * optimization: rearranged the expansion of various defining macros
1576 so that each expands into only one top-level form in a
1577 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1579 * optimization: used a previously little-used slot in symbols to
1580 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1582 * fixed some bugs revealed by Paul Dietz' test suite:
1583 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1585 ** Fixed an optimization bug related to inheritance of initforms
1586 from local to shared slots.
1587 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1588 ** CAST optimizer forgot to flush argument derived type.
1589 ** print/read consistency on floats is now orders of magnitude
1590 more likely. (thanks also to Bruno Haible for a similar report
1592 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1593 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1594 for objects of type REAL. Make it so.
1595 ** SXHASH is specified (infelicitously) to respect similarity,
1596 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1597 it so. (thanks to Markus Ziegler)
1598 ** on the Alpha, the compiler succeeds in compiling functions
1599 returning a known number of arguments greater than 63.
1600 ** fixed handling of invalid NIL arguments in keyword position
1602 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1604 ** provided a readably-printable representation for RANDOM-STATE
1606 ** ensured that pathnames, where they have a namestring, always
1607 print using #P"..." syntax.
1609 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1610 * Support for the forthcoming 2.0 version of the NetBSD kernel
1611 running on x86 hardware has been added. (thanks to Perry
1612 E. Metzger most immediately, and others for their past work)
1613 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1614 current release version; SBCL's OpenBSD support had been broken
1615 since about the time of OpenBSD's switch to ELF binary format.)
1616 * [placeholder for DX summary]
1617 ** user code with &REST lists declared dynamic-extent, under high
1618 speed or space and low safety and debug optimization policy.
1619 * The manual has been converted to Texinfo format and the debugger
1620 chapter from the cmucl manual has been added.
1621 * A facility has been added to extract documentation strings from
1622 sbcl and store them as Texinfo-formatted snippets for inclusion in
1623 the manual (via Texinfo's @include directive)
1624 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1625 the test case to Dave Roberts)
1626 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1627 pointers. (reported by Sean Ross)
1628 * bug fix: PROFILE output is printed nicely even for large numerical
1629 values. (thanks to Zach Beane)
1630 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1631 greater than 32 handle EOF correctly.
1632 * bug fix: on X86 an immediate argument of the IMUL instruction is
1633 correctly printed in disassembly. (thanks to Lutz Euler)
1634 * bug fix: class slots in redefined classes preserve their old
1635 values. (thanks to Bruno Haible and Nikodemus Siivola)
1636 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1637 succeeds. (reported by Marco Baringer)
1638 * fixed some bugs revealed by Paul Dietz' test suite:
1639 ** READ-SEQUENCE now works on ECHO-STREAMs.
1640 ** RATIONALIZE works more according to its specification. (thanks
1643 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1644 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1645 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1646 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1647 should matter to you only if you rebind the printer control
1648 variables and then find you want different bindings in the
1649 debugger than in the ordinary execution of your program.)
1650 * The runtime build system has been tweaked to support building
1651 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1652 assembler and linker. (thanks to Nikodemus Siivola)
1653 * Unbound, undefined, undeclared variables now trigger full
1654 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1655 more often programmer error than deliberate exploitation of undefined
1657 * optimization: the hash algorithm for strings has changed to one
1658 that is less vulnerable to spurious collisions. (thanks to Juho
1660 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1661 needless bounds checking. (thanks to Juho Snellman)
1662 * optimization: implemented multiplication as a modular
1663 (UNSIGNED-BYTE 32) operation on the PPC backend.
1664 * fixed some bugs revealed by Paul Dietz' test suite:
1665 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1667 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1668 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1669 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1671 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1673 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1675 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1676 their output stream on EOF from read.
1677 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1678 have been read to end-of-file.
1679 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1681 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1682 description of determination of which consecutive characters
1684 ** Printing the "Space" character with escaping on now yields "#\\ ",
1685 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1686 ** Reading floating-point numbers with *READ-BASE* set to a number
1687 less than 10 works correctly.
1688 ** Reading floating-point numbers with *READ-BASE* set to a number
1689 more than 10 works correctly.
1690 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1691 the readtable currently in effect.
1693 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1694 * minor incompatible change: parsing of namestrings on a physical
1695 (Unix) host has changed; numbers after the final #\. in a
1696 namestring are no longer interpreted as a version field. This is
1697 intented to be largely invisible to the user, except that the
1698 meaning of the namestring "*.*.*" has changed: it now refers to a
1699 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1700 should usually be replaced by
1701 (make-pathname :name :wild :type :wild :version :wild)
1702 with the added benefit that this is more likely to be portable.
1703 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1704 option to OPEN now signals an error if the file being opened
1705 exists; this may have an impact on existing code.
1706 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1707 signals received, on the PowerPC platforms (both Linux and
1708 Darwin). (thanks to Pierre Mai for pointing out the location of
1710 * several fixes on OS X: The system now builds and runs cleanly on
1711 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1712 (thanks to Brian Mastenbrook)
1713 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1714 second-resolution: integer multiples of 1/3600 between -24 and 24.
1715 (thanks to Vincent Arkesteijn)
1716 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1717 type when called with 1 argument; PEEK-CHAR checked type of
1718 PEEK-TYPE only after having read first character from a
1719 stream. (reported by Peter Graves)
1720 * bug fix: the garbage collector now has much better locality
1721 behaviour, and in particular no longer treats all memory as being
1722 exhausted when many small objects point to each other in a deeply
1724 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1725 recognized as being TYPEP their class.
1726 * bug fix: the PUSHNEW documentation string has been corrected.
1727 (thanks to Vincent Arkesteijn)
1728 * bug fix: defaulting of the value for the last of an atypically
1729 large number of multiple values being bound was not being
1730 performed correctly on the Alpha or PPC platforms
1731 * optimization: implemented multiplication as a modular
1732 (UNSIGNED-BYTE 32) operation on the x86 backend.
1733 * optimization: SEARCH on simple-base-strings can now be open-coded.
1734 (see also contrib/compiler-extras.lisp for inspiration for
1735 teaching the compiler about the Boyer-Moore algorithm).
1736 * value, returned by MAX (and MIN) called with several EQUALP, but
1737 not EQL, arguments now does not depend on compiler settings.
1738 * fixed some bugs revealed by Paul Dietz' test suite:
1739 ** in stack analysis liveness information is propagated from
1740 non-local entry points.
1741 ** pathwise CAST removing failed when the CAST node did not start
1743 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1744 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1746 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1747 host is already defined.
1748 ** RENAME-FILE works on streams instead of signalling an internal
1750 ** PEEK-CHAR uses the current readtable when determining whether
1751 or not a character is whitespace.
1752 ** MERGE-PATHNAMES handles the case when the pathname does not
1753 specify a name while the default-pathname specifies a version.
1754 ** Pathnames now stand a better chance of respecting print/read
1756 ** Attempting to use standardized file system operators with a
1757 pathname with invalid :DIRECTORY components signals a
1759 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1761 ** DIRECTORY on logical pathnames is more correct.
1762 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1763 signal a TYPE-ERROR if their argument is not a stream.
1764 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1765 designator argument does not designate a stream.
1766 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1767 examining the synonym.
1768 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1770 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1771 element-type larger than ([UN]SIGNED-BYTE 32).
1773 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1774 * When built with the :SB-FUTEX feature, threaded builds now take
1775 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1776 for faster/more reliable mutex and condition variable support.
1777 * Incompatible change (but one you probably shouldn't have been using
1778 anyway): the interface and code for arbitrating between multiple
1779 threads in the same user session has been redesigned.
1780 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1781 error when called without an explicit environment argument.
1782 (thanks to Nikodemus Siivola)
1783 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1784 confused about their position. (thanks to Adam Warner and Gerd
1786 * bug fix: Pretty printing backquoted forms with unquotations in the
1787 argument list position of various code constructs such as LAMBDA
1788 now works correctly. (reported by Paul Dietz)
1789 * bug fix: Pretty printing unquotations no longer loses all
1790 stream position information.
1791 * optimization: performance of string output streams is now less
1792 poor for multiple small sequence writes.
1793 * optimization: performance of CSUBTYPEP in the presence of complex
1794 expressions involving CONS and NOT many times has been improved.
1795 (reported by Paul Dietz)
1796 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1798 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1799 streams for the REPL, for the debugger, and so on. (thanks to
1801 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1802 * fixed some bugs revealed by Paul Dietz' test suite:
1803 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1804 is ignored if it is too small, rather than propagating through
1805 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1806 ** extremely complex negations of CONS types were not being
1807 sufficiently canonicalized, leading to inconsistencies in
1809 ** VALUES tranformer lost derived type.
1811 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1812 * fixed a bootstrapping bug: the build process no longer assumes
1813 that the various BOOLE-related constants have the same value in
1814 host and target lisps. (noted by Paul Dietz' test suite on an
1815 SBCL binary built from CLISP)
1816 * The system can now be dynamically linked on the MIPS platform,
1817 which enables dynamic loading of foreign code from Lisp. (thanks
1818 to Ralf Baechle for discussions on the MIPS ABI)
1819 * The system now records debugging information for its own source
1820 files in a filesystem-position-independent manner, relative to
1821 the "SYS" logical host.
1822 * fixed a compiler bug: MV-LET convertion did not check references
1823 to the "max args" entry point. (reported by Brian Downing)
1824 * tweaked disassembly notes to be less confident about proclaiming
1825 some instruction as an LRA. (thanks to Brian Downing)
1826 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1827 now each have their own history, command character, and other
1828 characteristics. (thanks to David Lichteblau)
1829 * fixed some bugs revealed by Paul Dietz' test suite:
1830 ** compiler failure in compiling LOGAND expressions including a
1832 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1833 shift greater than 32.
1834 ** FLUSH-DEST did not mark blocks for type check regeneration.
1835 ** HANDLER-CASE failed to accept declarations in handler clauses
1836 in some circumstances.
1838 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1839 * New code in contrib/sb-introspect (still probably not entirely
1840 stable yet) provides some support for smart Lisp development
1841 environments like SLIME.
1842 * The conditions signalled for errors occurring when loading .fasl
1843 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1844 in a way which should help ASDF recover gracefully.
1845 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1846 stuff has been cleaned up. If you code contrib/ stuff, this might
1847 affect you, and you can look at contrib/README, contrib/STANDARDS,
1848 and/or the 0.8.4.27 diff to check.
1849 * In full calls the compiler now does not generate checks for declared
1850 argument types for all arguments.
1851 * various threading fixes
1852 ** and some experimental patches which didn't make it into
1853 the main tree for this release, but which are shipped in
1854 contrib/experimental-thread.patch as a possible fix for some
1855 failures (deadlock, spinning...) in GC-intensive multithreaded
1857 * fixed PPC build problem (source code incompatibility of different
1858 library versions): added offsetof() hackery which attempts to divine
1859 where glibc maintainers put uc_mcontext today
1860 * fixed bug 282: compiler does not trust type assertions while passing
1861 arguments to a full call.
1862 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1863 &OPTIONAL VALUES type parameter.
1864 * fix bug 214: algorithm for noting rejected templates is now more
1865 similar to that of template seletion. (also reported by rydis on
1867 * fixed bug 141b: printing backquoted information readably and prettily
1868 inserts a space where necessary.
1869 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1870 (CHARACTER 10) are now reported as errors, rather than propagated
1871 as unknown types. (reported by piso on #lisp)
1872 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1873 with values NIL and :ERROR. (thanks to Milan Zamazal)
1874 * fixed bug 191c: CLOS now does proper keyword argument checking as
1875 described in CLHS 7.6.5 and 7.6.5.1.
1876 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1877 longer raise an error; further, using a list as a for-as-arithmetic
1878 counter now raises a meaningful error.
1879 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1880 now understood by sequence creation functions such as MAKE-SEQUENCE
1882 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1883 a STRING-INPUT-STREAM.
1884 * compiler enhancement: SIGNUM is now better able to derive the type
1886 * type declarations inside WITH-SLOTS are checked. (reported by
1888 * fixed some bugs revealed by Paul Dietz' test suite:
1889 ** incorrect optimization of TRUNCATE for a positive first
1890 argument and negative second.
1891 ** compiler failure in let-convertion during flushing dead code.
1892 ** compiler failure while deriving type of TRUNCATE on an
1893 interval, containing 0.
1894 ** ASH of a negative bignum by a negative bignum count now returns
1896 ** intersection of CONS types now canonicalizes properly, fixing
1897 inconsistencies in SUBTYPEP.
1899 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1900 * incompatible change: The --disable-debugger command line
1901 option now clobbers the debugger at a more fundamental
1902 level, by redefining #'INVOKE-DEBUGGER instead of by
1903 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1904 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1905 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1906 enter the debugger REPL and then suffer recursive errors
1907 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1908 while under the new system, BREAK in --disable-debugger mode
1909 terminates the system just as an unhandled error would.
1910 * fixed compiler performance when processing loops with a step >1;
1911 * bug fix: DOCUMENTATION now retrieves generic function
1912 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1913 support has been systematized, and now supports the methods
1914 specified by ANSI, along with a default method and a method for
1915 slot documentation. (reported by Nathan Froyd)
1916 * bug fix: effective methods associated with a generic function are
1917 no longer cached over a change of that generic function's method
1918 combination. (reported by Andreas Fuchs)
1919 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1920 names a non-existent directory. (thanks to Andreas Fuchs)
1921 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1922 the PPC platform, lead to stack corruption; this has been fixed.
1923 (reported by Rainer Joswig)
1924 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1925 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1926 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1927 arithmetic in general, is now much more reliable on the PPC
1929 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1930 platform now returns the right answer.
1931 * optimization: restored some effective method precomputation in
1932 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1933 precomputation is now tunable.
1934 * optimization: compiler-internal data structure use has been
1935 reviewed, and changes have been made that should improve the
1936 performance of the compiler by about 20%.
1937 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1938 simple-base-strings and simple-bit-vectors is improved.
1939 * optimization: the optimization of 32-bit logical and arithmetic
1940 functions introduced in version 0.8.3 on the x86 has been
1941 implemented on the mips, ppc and sparc platforms; an
1942 implementation of the same facility, but for 64-bit arithmetic,
1943 has been added for the alpha.
1944 * microoptimization: the compiler is better able to make use of the
1945 x86 LEA instruction for multiplication by constants.
1946 * bug fix: in some situations compiler did not report usage of
1947 generic arithmetic in (SPEED 3) policy.
1948 * bug 145b fix: compiler used wrong type specifier while converting
1949 MEMBER-types to numeric.
1950 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1952 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1953 index argument now works properly on the Alpha platform.
1954 * bug fix: floating point exception treatment on the Alpha platform
1956 * bug fix: FILE-POSITION works much better on string input and
1957 output streams. (thanks to Nikodemus Siivola)
1958 * bug fix: many threading/garbage collection symptoms sorted.
1959 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1960 might be pseudo-atomic.
1961 * internal change: Stopping for GC is now done with signals not
1962 ptrace. GC is now done in whichever thread wanted it, instead of
1964 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1966 * bug fix: result form in DO is not contained in the implicit
1968 * incompatible change: ICR structure is changed; the value part of
1969 CONTINUATION is now called LVAR; corresponding functions are
1970 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1971 * added type deriver for ISQRT (thanks to Robert E. Brown).
1972 * bug fix: better support for loading from the command line when an
1973 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1975 * fixed some bugs revealed by Paul Dietz' test suite:
1976 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1977 ** ROUND and FROUND now give the right answer when given very
1978 small float arguments.
1979 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1981 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1982 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1983 ** LCM should return a non-negative integer.
1984 ** PARSE-INTEGER returned the index of a terminator instead of the
1985 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1986 ** PARSE-INTEGER returned an incorrect index being applied to a
1988 ** LCM with two arguments of 0 returns 0 rather than signalling
1990 ** unsigned addition of a 32-bit constant with the high bit set no
1991 longer causes an internal compiler error on the x86.
1992 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1993 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1994 with negative last argument.
1995 ** byte specifiers with zero size and position no longer cause
1996 an error during type derivation.
1997 ** bignum multiplication on the Alpha platform now returns the
1999 * porting: The system now builds on SuSE AMD64, although it still
2000 generates a 32-bit binary.
2001 * .fasl file incompatibility: The fasl file version number has
2002 been incremented (because of the changes to internal compiler
2003 data structures referred to above).
2005 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2006 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2007 more accurately, on the Darwin kernel running on PowerPC hardware.
2008 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2009 * Compiler code deletion notes now signal a condition of type
2010 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2011 an associated MUFFLE-WARNING restart.
2012 * The compiler now performs limited argument count validation of
2013 constant format strings in FORMAT, and where appropriate in ERROR,
2014 CERROR and WARN. (thanks to Gerd Moellmann)
2015 * New ASDF-INSTALL contrib can be used for automatic download and
2016 installation of third-party Lisp code from CCLAN or other sites
2018 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2019 which forces another thread to execute a function supplied by the
2021 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2022 now accept and act upon their :ELEMENT-TYPE keyword argument.
2023 (reported by Martin Atzmueller, Edi Weitz)
2024 * bug fix: FILE-POSITION now accepts position designators up to
2025 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2026 is the greater. (thanks to Patrik Nordebo)
2027 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2028 Kalle Olavi Niemitalo)
2029 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2030 printable. (reported by Eric Marsden)
2031 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2032 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2033 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2034 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2035 (thanks to Stig Sandoe)
2036 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2037 UNREAD-CHAR now correctly includes the unread character in the
2038 target sequence. (thanks to Gerd Moellmann)
2039 * bug fix in threaded builds: the system can now be suspended and
2040 resumed by shell job control with minimal disruption.
2041 * bug fixes in times and timezones >2038AD
2042 * better handling of "where is GNU make?" problem in build scripts
2043 (thanks to Nikodemus Siivola)
2044 * new optimization: inside a named function any reference to a
2045 function with the same name is considered to be a self-reference;
2046 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2047 optimization quality.
2048 * new optimization on x86: logical functions and + now have
2049 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2050 used when the result is truncated to 32 bits.
2051 * VALUES declaration is partially enabled.
2052 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2053 * fixed some bugs revealed by Paul Dietz' test suite:
2054 ** The system now obeys the constraint imposed by
2055 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2056 types form a lattice under type intersection.
2057 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2058 ** ASSOC now ignores NIL elements in an alist.
2059 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2060 and (1+ MOST-POSITIVE-FIXNUM) answers.
2061 ** The addition of a method with invalid qualifiers to a generic
2062 function does not cause an error to be signalled immediately;
2063 a warning is signalled, and the error is generated only on
2064 calling the generic function.
2065 * changed .fasl file version number, in part to add type codes for
2066 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2067 obscure ANSI requirements
2069 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2070 * fixed bug 148: failure to inline-expand a local function left
2071 garbage, confusing the compiler.
2072 * fixed bugs 3cd: structure slot readers perform type check if the
2073 slot can have an invalid value (i.e. it is either not initialized
2074 or can be written with a less specific slot writer).
2075 * bug fix: the compiler now traps array references to elements off
2076 the end of an array; previously, the bounds checking in some
2077 circumstances could go off-by-one.
2078 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2080 * type declarations for array element types now obey the description
2081 on the CLHS page "Declaration TYPE", as per discussions on
2082 sbcl-help around 2003-05-08. This means that a declaration
2083 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2084 declaration, all references to BAR will be asserted or assumed
2085 (with THE, so dependent on compiler policy) to involve objects of
2086 type FOO. Note that no such declaration is implied in
2087 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2088 * declared types of functions from the "Conditions"
2089 chapter. (reported by Paul Dietz)
2090 * bug fix: CERROR accepts a function as its first argument.
2091 * bug fix: NTH an NTHCDR accept a bignum as index
2092 arguments. (reported by Adam Warner)
2093 * optimization: character compare routines now optimize comparing
2094 against a constant character. (reported by Gilbert Baumann)
2095 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2096 argument now works properly on the MIPS platform.
2097 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2098 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2099 declared to have a functional type, does not cause an error
2101 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2102 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2103 * fixed bug: if last continuation of a deleted block has a
2104 destination, this destination should be deleted too. (reported by
2106 * fixed a bug in the bootstrap process: the host compiler's values
2107 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2108 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2109 test case from Patrik Nordebo)
2110 * improved the ability of the disassembler on the PPC platform to
2111 provide helpful disassembly notes.
2112 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2113 the class in more cases than previously.
2114 * bug fix: FILE-POSITION now understands :START and :END for
2115 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2116 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2117 8) data. (thanks to David Lichteblau)
2118 * bug fix: it is possible to add a method to a generic function
2119 without lambda list.
2120 * bug fix: reader failed to signal END-OF-FILE inside an
2121 object representation. (reported by Nikodemus Siivola)
2122 * fixed some bugs revealed by Paul Dietz' test suite:
2123 ** LAST and [N]BUTLAST should accept a bignum.
2124 ** condition slot accessors are methods.
2125 ** (VECTOR NIL) is a subtype of STRING.
2127 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2128 * minor incompatible change: some nonsensical specialized lambda
2129 lists (used in DEFMETHOD) which were previously ignored now signal
2131 * minor incompatible change: the system is now aware of the types of
2132 variables in the COMMON-LISP package, and will signal errors for
2133 most violations of these type constraints (where previously they
2134 were silently accepted).
2135 * minor incompatible change: COMPILE-FILE now uses the freedom
2136 afforded (ANSI 3.2.2.3) to use derived function types for
2137 functions defined in the same file. This also permits the system
2138 to warn on static type mismatches and function
2139 redefinition. (Currently it does not work with high DEBUG level.)
2140 * minor incompatible change: VALUES declaration is disabled.
2141 * When issuing notes, the compiler now signals a condition of type
2142 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2143 restart for use in user handlers. It is expected that the
2144 COMPILER-NOTE condition will eventually become a condition
2145 supertype to a hierarchy of note types, which will then be
2146 handleable in a similar fashion. However, at the moment, no such
2147 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2148 but it's an implementation detail, not a classification for the
2150 * Changes in type checking closed the following bugs:
2151 ** type checking of unused values (192b, 194d, 203);
2152 ** template selection based on unsafe type assertions (192c, 236);
2153 ** type checking in branches (194bc).
2154 * A short form of VALUES type specifier has ANSI meaning (it has
2155 increased the number of situations when SBCL cannot perform type
2157 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2158 keywords or constants is permissible.
2159 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2160 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2161 classes. (thanks to Antonio Martinez)
2162 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2163 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2164 argument to a pretty-print stream. Instead, it leaves any such
2165 operations to DESCRIBE-OBJECT methods.
2166 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2168 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2169 lambda lists. (thanks to David Lichteblau)
2170 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2171 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2172 (thanks to Gerd Moellmann)
2173 * fixed bug 246: increased compilation speed of long
2174 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2176 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2178 * DEFCONSTANT now throws a condition of type
2179 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2180 constant to a non-EQL value; CONTINUE and ABORT restarts
2181 respectively change and preserve the value.
2182 * fixed bug 63: The code walker, part of the implementation of CLOS,
2183 is now better at handling symbol macros.
2184 * bug fix: There is no longer an internal implementation type named
2185 CL:LENGTH. (reported by Raymond Toy)
2186 * bug fix: In macro-like defining macros/special operators the
2187 implicit block does not enclose the lambda list.
2188 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2189 enclosed in parentheses) are not suitable as type specifiers, and
2190 their use properly signals an error now.
2191 * bug fix: An argument count mismatch for a type specifier in code
2192 being compiled no longer causes an unhandled error at compile
2193 time, but signals a compile-time warning.
2194 * fixed simple vector readable printing
2195 * bug fix: DESCRIBE takes more care over whether the class
2196 precedence list slot of a class is bound before accessing it.
2197 (reported by Markus Krummenacker)
2198 * bug fix: FORMATTER can successfully compile pretty-printer format
2199 strings which use variants of the ~* directive inside.
2200 * bug fix: SEARCH now applies its TEST predicate to the elements of
2201 the arguments in the correct order. (thanks to Wolfhard Buss)
2202 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2203 in type inference. (thanks to Robert E. Brown)
2204 * bug fix: Reading in symbols with an explicit package name of ""
2205 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2206 * fixed some bugs revealed by Paul Dietz' test suite:
2207 ** NIL is now allowed as a structure slot name.
2208 ** Arbitrary numbers, not just REALs, are allowed in certain
2209 circumstances in LOOP for-as-arithmetic clauses.
2210 ** Multiple class redefinitions before slot access no longer
2211 causes a type error.
2212 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2213 association between the name and a class.
2214 ** Generic functions with non-standard method-combination and over
2215 five methods all of which return constants no longer return NIL
2216 after the first few invocations. (thanks to Gerd Moellmann)
2217 ** CALL-NEXT-METHOD with no arguments now passes the original
2218 values of the arguments, even in the presence of assignment.
2219 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2221 ** DISASSEMBLE works with closures and funcallable instances.
2222 ** ADD-METHOD now returns the generic function, not the new method.
2223 ** FIND-METHOD signals an error if the lengths of the specializers
2224 is incompatible with the generic function, even if the ERRORP
2226 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2227 which its argument is a member.
2228 ** DEFCLASS only redefines the class named by its class-name
2229 argument if that name is the proper name of the class;
2230 otherwise, it creates a new class.
2231 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2232 of the UNBOUND-SLOT condition to the name of the slot.
2233 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2234 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2235 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2236 SLOT-MAKUNBOUND in the specified fashion.
2238 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2239 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2240 cross-compilation host. As a consequence, we can now bootstrap our
2241 way up to SBCL starting with a bare gcc toolchain and human-readable
2242 source code (first the source to CLISP, then the source to SBCL).
2243 * A contributed module containing a partial implementation of the
2244 simple-streams interface has been included. (thanks to Rudi
2246 * A contributed module implementing the RFC1321 Message Digest
2247 Algorithm, known as MD5, has been included.
2248 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2249 no longer has any effect, as the code controlled by this feature
2250 has been deleted. (As far as we know, no-one has ever built using
2251 this feature, and its semantics were confused in any case).
2252 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2253 work on conditions (as required by the ANSI specification),
2254 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2255 expected behaviour on conditions. Users should note, however,
2256 that such behaviour is not required by the ANSI specification,
2257 and so use of this behaviour may render their code unportable.
2258 * fixed some bugs revealed by Paul Dietz' test suite:
2259 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2261 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2262 ** SXHASH on condition objects no longer returns NIL.
2263 ** :ALLOCATION :CLASS slots are better treated; their values are
2264 updated on class redefinition, and initforms inherited from
2265 superclasses are applied.
2266 ** REMOVE-METHOD returns its generic function argument even when
2267 no method was removed.
2268 ** SHARED-INITIALIZE now initializes the values of the requested
2269 slots, including those with :ALLOCATION :CLASS.
2270 ** ALLOCATE-INSTANCE now works on structure classes defined via
2271 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2273 ** SLOT-EXISTS-P now works on conditions, as well as structures
2275 ** MAKE-LOAD-FORM now has the required methods on
2276 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2277 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2278 keyword, and now implements the SLOT-NAMES argument.
2279 ** methods with &OPTIONAL arguments no longer allow too many
2280 arguments to be passed in the call without error.
2281 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2282 option is consistent with the required arguments of the generic
2283 function lambda list.
2284 * bug fix: REQUIRE accepts a string designator. (Thanks to
2286 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2287 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2288 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2289 * bug fix: The compiler now checks for duplicated variables in macro
2291 * bug fix: SETQ on globals returns the correct value.
2292 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2293 not a COMPILER-ERROR (followed by some other strange error on
2294 choosing the CONTINUE restart).
2295 * bug fix: make.sh and friends are now more consistent in the way that
2296 they look for GNU "make".
2298 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2299 * experimental native threads support (on x86 Linux >=2.4 only).
2300 This is not compiled in by default: you need to add :SB-THREAD to
2301 the target features. See the "Beyond ANSI" chapter of the manual
2303 * fix for longstanding nonANSIism: The old distinction between
2304 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2305 The return value from CL:FIND-CLASS is now a CLOS class, and
2306 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2307 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2308 * An interface to the MetaObject Protocol, as described in Kiczales,
2309 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2310 MIT Press, 1991, is available from the SB-MOP package.
2311 * incompatible change: the SB-PCL package should now be considered
2312 a private implementation detail, and no longer a semi-private MOP
2314 * minor incompatible change: due to rearrangement for threads, the
2315 control stack and binding stack are now allocated at arbitrary
2316 addresses instead of being hardcoded per-port. Users affected by
2317 this probably have to be doing advanced things with shared
2318 libraries, and will know who they are.
2319 * minor incompatible change: Previously, all --eval forms used were
2320 processed with READ before any of them were processed with EVAL.
2321 Now each --eval form is processed with both READ and EVAL before
2322 the next --eval form is processed. (Thus package operations like
2323 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2324 work as the user might reasonably expect.)
2325 * minor incompatible change: *STANDARD-INPUT* is now only an
2326 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2328 * minor incompatible change: Y-OR-N-P is now character-oriented,
2329 not line oriented. Also, YES-OR-NO-P now works without errors.
2330 (thanks to Antonio Martinez)
2331 * sb-aclrepl module improvements: an integrated inspector, added
2332 repl features, and a bug fix to :trace command.
2333 * Known functions, which cannot be open coded by the backend, are
2334 considered to be able to check types of their arguments. (fixing
2335 a bug report by Nathan J. Froyd)
2336 * fixed a bug in computing method discriminating functions: It is
2337 now possible to define methods specialized on classes which have
2338 forward-referenced superclasses. (thanks to Gerd Moellmann)
2339 * fixed evaluation order in optional entries (reported by Gilbert
2341 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2342 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2343 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2344 required-by-AMOP NAME argument, as well as CLASS and
2345 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2346 * fixed bug 20: DEFMETHOD can define methods using names that are
2347 not the proper names of classes to designate class specializers.
2348 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2349 Unix file descriptors, instead of blowing up. (thanks to Antonio
2351 * Garbage collection refactoring: user-visible change is that a
2352 call to the GC function during WITHOUT-GCING will not do garbage
2353 collection until the end of the WITHOUT-GCING. If you were doing
2354 this you were probably losing anyway.
2355 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2356 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2357 TYPEP the latter but not the former.
2358 * The compiler issues a full WARNING for calls to undefined functions
2359 with names from the CL package.
2360 * MAP-INTO for a vector destination is open coded. (reported by
2361 Brian Downing on c.l.l)
2362 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2363 documentation string.
2364 * fixed some bugs revealed by Paul Dietz' test suite:
2365 ** COPY-ALIST now signals an error if its argument is a dotted
2367 ** Condition slots are now accessed more correctly in the presence
2368 of multiple initargs for a given slot.
2369 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2370 exclude restarts of the same name associated with a different
2372 ** DEFCLASS of forward-referenced classes with another
2373 forward-referenced class in the superclasses list no longer
2375 ** Condition slots are now initialized once each, not multiple
2376 times. (thanks to Gerd Moellmann)
2377 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2379 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2380 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2381 arguments contain duplicated elements.
2382 ** RESTART-CASE understands local macros.
2383 ** RESTART-CASE associates exactly its own restarts with a condition.
2384 ** ENDP in safe mode checks its argument to be of type LIST.
2385 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2386 in question is unbound.
2387 ** Optimized MAKE-INSTANCE functions no longer cause internal
2388 assertion failures in the presence of duplicate initargs.
2389 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2390 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2391 propagated even in the ctor optimized implementation of
2393 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2395 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2396 * a better implementation of SXHASH on (simple) bit vectors,
2397 measured both in execution speed and in distribution of results
2398 over the positive fixnums, has been installed. Likewise, a better
2399 implementation of EQUAL for simple bit vectors is now available.
2400 * fixed CEILING optimization for a divisor of form 2^k.
2401 * fixed bug 240 (emitting extra style warnings "using the lexical
2402 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2403 by Antonio Martinez)
2404 * fixed SXHASH, giving different results for NIL depending on type
2405 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2406 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2407 variable. (found by Rolf Wester)
2408 * SBCL does not ignore type declarations for special
2409 variables. (reported by rif on c.l.l 2003-03-05)
2410 * some bug fixes in contrib/sb-aclrepl/
2411 * fixed some bugs revealed by Paul Dietz' test suite:
2412 ** a bug in the CONS type specifier, whereby the CAR and CDR
2413 types got intertwined, has been fixed;
2414 ** the type system is now able to reason about the interaction
2415 between INTEGER and RATIO types more completely;
2416 ** APPEND, [N]REVERSE and NRECONC check that those their
2417 arguments, which must be proper lists, are really so;
2418 ** An array specialized to be unable to hold elements has been
2419 implemented, as required -- yes, really -- by ANSI;
2420 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2421 on malformed property lists;
2423 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2424 * incompatible packaging change: in line with Unix convention,
2425 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2426 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2427 * REQUIRE and PROVIDE are now optionally capable of doing something
2428 useful. See the documentation string for REQUIRE.
2429 * infrastructure for a managed SBCL contrib system: contributed
2430 modules in this release include:
2431 ** the ASDF system definition facility;
2432 ** an interface to the BSD Sockets API;
2433 ** an ACL-like convenience interface to the repl;
2434 (thanks to Kevin Rosenberg)
2435 ** an implementation of ROTATE-BYTE, with efficient implementation
2437 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2438 gives a closer approximation to the right answer than previously.
2439 (thanks to Raymond Toy)
2440 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2441 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2442 optional environment arguments, as required by ANSI.
2443 * fixed bugs in other functions taking environment objects, allowing
2444 calls with an explicit NIL environment argument to be compiled
2446 * fixed bug 228: primary return values from
2447 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2448 COMPILE or FUNCTION.
2449 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2450 :TYPE will no longer signal errors on innocuous objects.
2451 * fixed bug 231b: SETQ is better at respecting type declarations in
2452 the lexical environment.
2453 * fixed a bug in DEFCLASS: classes named by symbols with no or
2454 unprintable packages can now be defined.
2455 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2456 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2457 * fixed compiler failure related to checking types of functions.
2458 (reported by Robert E. Brown)
2459 * the compiler is now much more consistent in its error-checking
2460 treatment of bounding index arguments to sequence functions: in
2461 (SAFETY 3) code, errors will be signalled in almost all cases if
2462 invalid sequence bounding indices are passed to functions defined
2463 by ANSI to operate on sequences.
2464 * fixed a bug in the build procedure: documentation of SBCL-specific
2465 packages is now preserved and available in the final Lisp image.
2466 * lifted FDEFINITION lookup out of loops in the implementation of
2467 many list operations. (thanks to Robert E. Brown)
2468 * fixed a bug in the reader: the #n# reader macro now works for
2469 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2470 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2471 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2472 E. Brown and Tony Martinez respectively)
2473 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2474 SLOT-BOUNDP: in particular, it is now able to optimize them much
2475 better, and is now not vulnerable to having packages renamed.
2476 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2477 always called when a slot is not present in an instance. (thanks
2479 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2480 longer signal an error on unreading a character following EOF on
2481 the previous constituent stream. (thanks to Tony Martinez)
2482 * fixed some bugs revealed by Paul Dietz' test suite:
2483 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2484 not just nonnegative fixnums;
2485 ** the logical bit-array operators such as BIT-AND now accept an
2486 explicit NIL for their "opt-arg" argument (to indicate a
2487 freshly-consed result bit-array);
2488 ** ELT now signals an error on an invalid sequence index in safe
2490 ** the type system is now cleverer about negations of numeric
2491 types, and consequently understands the BIGNUM and RATIO types
2493 ** the type system is now cleverer about the interaction between
2494 INTEGER and RATIO types: while bugs still remain, many more
2495 cases are accurately computed;
2496 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2497 if it is in the last clause;
2498 ** CONSTANTLY now correctly returns a side-effect-free function in
2500 ** DECLARE is no longer treated as a special-operator; in
2501 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2502 * incremented fasl file version number due to the change in the
2503 DEFSTRUCT-SLOT-DESCRIPTION structure.
2505 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2506 * minor incompatible change: code processed by the "interpreter" or
2507 EVAL now has a compilation optimization policy of (DEBUG 2)
2508 (changed from (DEBUG 1)) to improve debuggability of interactive
2509 development, and to allow the use of the debug RETURN command in
2511 * an experimental implementation of the RETURN command for the
2512 debugger has been included. (thanks to Frederik Kuivinen)
2513 * fixed bug 62: constraints were not propagated into a loop.
2514 * fixed bug in embedded calls of SORT (reported and investigated by
2516 * fixed some bugs revealed by Paul Dietz' test suite:
2517 ** printing and reading of arrays with some dimensions having
2518 length 0 (thanks to Gerd Moellmann);
2519 ** BOA constructor with &AUX argument without a default value does
2520 not cause a type error;
2521 ** CONSTANTP now returns true for all self-evaluating objects.
2523 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2524 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2525 accessors that are related by inheritance, as specified in the
2526 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2527 Valtteri Vuorikoski)
2528 * The compiler is now able to inline functions that were defined in
2529 a complex lexical environment (e.g. inside a MACROLET).
2530 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2532 * Support for the upcoming FreeBSD-5.0 release has been included.
2533 (thanks to Dag-Erling Smorgrav)
2534 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2535 effect when it is not in a toplevel context.
2536 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2537 stand a better chance of being correct. (thanks to Gerd
2539 * fixed bug in COERCE, which now signals an error on coercing a
2540 rational to a bounded real type which excludes the expected
2542 * The compiler is now able to derive types more accurately from the
2543 COERCE and COMPILE functions.
2544 * fixed bug 223: functional binding is considered to be constant
2545 only for symbols in the CL package.
2546 * fixed bug 231: SETQ did not check the type of a variable being set
2547 (reported by Robert E. Brown)
2548 * A new optimization for MAKE-INSTANCE has been included, fixing
2549 various bugs (including relating to :ALLOCATION :CLASS slots and
2550 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2552 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2553 ** As required by ANSI, LOOP now disallows anonymous collection
2554 clauses such as COLLECT I in conjunction with aggregate boolean
2555 clauses such as THEREIS (= I 1);
2556 ** LOOP now signals an error when any variable is reused in the
2557 same loop (including the potentially useful construct analogous
2558 to WITH A = 1 WITH A = (1+ A);
2559 ** IT is only a special loop symbol within the first clause of a
2560 conditional loop clause;
2561 ** LOOP with a typed iteration variable over a hashtable now
2562 signals a type error iff it should.
2563 * fixed some other bugs revealed by Paul Dietz' test suite:
2564 ** FILE-STREAM now names the class previously known as FD-STREAM;
2565 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2566 argument) no longer signals an error;
2567 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2568 of the slot symbol, rather than using the current package
2569 ((:CONC-NAME "") continues to intern the slot's name in the
2571 * incremented fasl file version number, because of the incompatible
2572 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2573 of the new implementation of DEFINE-COMPILER-MACRO.
2575 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2576 * Support for building SBCL for MIPS platforms running in
2577 little-endian mode has now been checked in, and basic
2578 functionality on said platforms verified.
2579 * minor incompatible change: PCL now records the pathname of a file
2580 in which methods and the like are defined, rather than its
2582 * minor incompatible change: TRUENAME now considers the truename of
2583 a file naming a directory to be the pathname with :DIRECTORY
2584 component indicating that directory.
2585 * minor incompatible change: a NAMED clause in the extended form of
2586 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2587 reason for the previous behaviour is unclear.
2588 * more systematization and improvement of CLOS and MOP conformance
2589 in PCL (thanks to Gerd Moellman and Pierre Mai):
2590 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2592 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2593 primary methods with no specializers;
2594 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2596 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2597 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2598 FORWARD-REFERENCED-CLASSes; error reporting on
2599 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2601 ** SXHASH on CLOS instances now uses a slot internal to the
2602 instance to return different numbers on distinct instances,
2603 while preserving the same return value through invocations of
2605 ** DEFMETHOD signals errors when methods with longer incongruent
2606 lambda lists are added to generic functions;
2607 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2608 CLASS, as specified in AMOP;
2609 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2610 on the order returned by the primary method for classes of
2611 class STANDARD-CLASS;
2612 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2613 * fixed some bugs shown by Paul Dietz' test suite:
2614 ** DOLIST puts its body in TAGBODY;
2615 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2617 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2618 value producing form;
2619 ** if more variables are given to PROGV than values, extra
2620 variables are bound and made to have no value;
2621 ** NSUBSTITUTE on list arguments gets the right answer with
2623 ** ELT signals an error of type TYPE-ERROR when the index argument
2624 is not a valid sequence index;
2625 ** LOOP signals (at macroexpansion time) an error of type
2626 PROGRAM-ERROR when duplicate variable names are found;
2627 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2628 ** FUNCALL of special-operators now cause an error of type
2630 ** PSETQ now works as required in the presence of side-effecting
2631 symbol-macro places;
2632 ** NCONC accepts any object as its last argument;
2633 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2635 ** loop-for-as-package does not require a package to be explicitely
2637 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2639 * fixed bug 166: compiler preserves "there is a way to go"
2640 invariant when deleting code.
2641 * fixed bug 172: macro lambda lists with required arguments after
2642 &REST arguments now cause an error to be signalled. (thanks to
2644 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2645 bug. (thanks to Matthew Danish)
2646 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2648 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2649 arguments are lexically rebound. (thanks to Gerd Moellmann and
2651 * fixed bug 194: error messages are now more informative when there
2652 is no primary method applicable in a call to a generic
2653 function. (thanks to Gerd Moellmann)
2654 * fixed bug in command line argument checking (thanks to Julian
2656 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2657 (thanks to Matthew Danish)
2658 * incremented fasl file version number, because of the
2659 SXHASH-related changes in the layout of CLOS data structures
2661 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2662 * minor incompatible change: The runtime (the Unix executable named
2663 "sbcl") is now much pickier about the .core files it will load.
2664 Essentially it now requires .core files to descend from the same
2665 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2666 as the runtime does. (The intent is to prevent the crashes which
2667 can occur, and which can even be reported as mysterious failures,
2668 when people patch the sources or change the build parameters
2669 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2670 sbcl and .core files.)
2671 * fixed bug: VALUES-LIST is no longer optimized away.
2672 * fixed bug 142: The FFI conversion of C string values to Lisp
2673 string values no longer conses excessively. (thanks to Nathan
2674 Froyd porting Raymond Toy's fix to CMU CL)
2675 * began to systematize and improve MOP conformance in PCL (thanks to
2676 Nathan Froyd, Gerd Moellman and Pierre Mai):
2677 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2679 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2680 ** FINALIZE-INHERITANCE is now called on class finalization;
2681 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2682 argument precedence order.
2683 * fixed bug 202: The compiler no longer fails on functions whose
2684 derived types contradict their declared type.
2685 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2686 so it can be non-toplevel.
2687 * The fasl file version number has changed (because of the new
2688 implementation of DEFMACRO).
2689 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2690 safe code, that any length requirement by their type-specifier
2691 argument is valid. The exceptions to this are described in bug
2693 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2694 functions now check the types of their inputs as required by ANSI.
2695 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2696 introduced symbol is DECLAREd to be SPECIAL.
2697 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2698 * fixed bug: :COUNT argument to sequence functions may be negative
2699 * fixed bug: body of DO-SYMBOLS may contain declarations
2700 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2701 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2702 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2703 symbol macro only once
2704 * fixed printing of call frame when argument list is unavailable
2705 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2706 * compiler no longer signals WARNING on unknown keyword
2709 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2710 * A beta-quality port to the mips architecture running Linux,
2711 based on the old CMUCL backend, has been made. It has been tested
2712 on a big-endian kernel, and works sufficiently well to be able to
2713 rebuild itself; it has not been tested in little-endian mode.
2714 * fixed an inconsistency between gencgc.c and purify.c which made
2715 dumping/loading .core files unreliable
2716 * fixed bug 120a: The compiler now deals correctly with IFs where
2717 the consequent is the same as the alternative, instead of
2718 misderiving the return type. (thanks to Alexey Dejneka)
2719 * fixed bug 113: Logical pathnames are now dumpable (the logical
2720 host is resolved at load-time, throwing an error if it is not
2722 * fixed bug 174: FORMAT's error message is slightly clearer when a
2723 non-printing character is used in a format directive.
2724 * fixed several bugs in compiler checking of type declarations, i.e.
2725 violations of the Python "declarations are assertions" principle
2726 (thanks to Alexey Dejneka)
2727 * fixed several bugs in PCL's error checking (thanks to Gerd
2729 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2731 * fixed bug in compilation of functions as first class values
2732 (thanks to Antonio Martinez-Shotton)
2733 * The compiler's handling TYPE-ERRORs which it can prove will
2734 inevitably happen at runtime has been cleaned up and corrected
2735 in several ways. (thanks to Alexey Dejneka)
2736 * improved argument type checking for various basic arithmetic
2737 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2738 lavished on them in the past that they can be compiled in many
2739 ways in different special cases
2740 * fixed bug 181: compiler checks validity of user supplied type
2742 * cleaned up code flushing in optimization: Function calls which
2743 should signal errors for safety purposes (e.g. which ANSI says
2744 should signal errors when their arguments are of incorrect type)
2745 are no longer optimized away.
2746 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2747 * incremented fasl file version number, because changes in the
2748 implementation of sequence functions like COERCE caused
2749 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2750 in old inline expansions) to become undefined. (Actually these
2751 changes were later undone, so we might very well be binary
2752 compatible with 0.7.7 after all, but leaving the version number
2753 incremented seemed like the simplest and most conservative
2756 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2757 * An alpha-quality port to the parisc architecture running Linux,
2758 based on the old CMUCL backend, has been made. This, even more so
2759 than the other backends, should be considered still a work in
2760 progress; known problems include that the Linux kernel in 64-bit
2761 mode does not propagate the correct sigcontext structure to
2762 userspace, and consequently SBCL on a parisc64 kernel will not
2764 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2765 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2766 suppressed.) Also now that the compiler is looking at declarations
2767 in the environment, it checks optimization declarations as well,
2768 and suppresses inlining when (> DEBUG SPEED).
2769 * More fixes have been made to treatment of floating point exception
2770 treatment and other Unix signals. In particular, floating point
2771 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2772 * The detection and handling of control stack exhaustion (infinite
2773 or very deeply nested recursion) has changed. Stack exhaustion
2774 detection is now done by write-protecting pages at the OS level
2775 and applies at all optimization settings; when found, a
2776 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2777 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2778 be caught using IGNORE-ERRORS.
2779 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2780 correctly when transforming recursive LABELS functions to LETs.
2781 (thanks to Alexey Dejneka)
2782 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2783 that are names of constants or global variables.
2784 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2785 alien routines with docstrings.
2786 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2787 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2789 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2790 (thanks to Eric Marsden)
2791 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2792 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2793 * Bug fix: The SPARC backend can now compile functions involving
2794 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2795 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2796 to a functions expecting a PATHNAME-DESIGNATOR.
2797 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2798 lambda lists. (thanks to Alexey Dejneka)
2799 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2800 functions so that EXPORTing the name of the class doesn't cause
2801 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2802 to Antonio Martinez for reporting this)
2803 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2804 constant-folded without failing an assertion. (thanks to Einar
2805 Floystad Dorum for reporting this)
2806 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2807 types are now dealt with more correctly by the compiler.
2808 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2809 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2810 behaviour analogous to RENAME-FILE. This puts its behaviour more
2811 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2813 * The fasl file version number has changed again. (because of the
2814 bug fix involving the names of PCL MAKE-INSTANCE functions)
2816 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2817 * bug fix: Floating point exceptions are treated much more
2818 consistently on the x86/Linux and PPC/Linux platforms.
2819 * Array initialization with :INITIAL-ELEMENT is now much faster for
2820 cases when the compiler cannot open code the array creation, but
2821 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2822 array accesses have also seen a speed increase.
2823 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2824 specified. (This was at the root of some bad interactions between
2825 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2827 * bug fix: Internal error arguments for undefined functions are now
2828 computed correctly on the PPC/Linux platform.
2829 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2830 Raymond Toy's patch for CMU CL)
2831 * Support for the Solaris 9 operating environment has been included
2832 (thanks to Daniel Merritt)
2833 * A very ugly but hopefully complete draft of the missing FFI chapter
2834 of the manual has been created by reformatting the corresponding
2835 CMU CL manual chapter into (currently very ugly and incoherent)
2836 DocBook and bringing it up to date for SBCL behavior. Thus, the
2837 manual is now essentially complete, at least by my extreme
2838 once-and-only-once standards, whereby it's acceptable to refer to
2839 the doc strings of SB-EXT functions as the primary documentation.
2840 * The fasl file version number has changed again, due to cleanup of
2841 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2842 is no longer a static symbol.)
2844 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2845 * SBCL now builds with OpenMCL (version 0.12) as the
2846 cross-compilation host; also, more progress has been made toward
2847 bootstrapping under CLISP.
2848 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2850 * bug 158 fixed: The compiler can now deal with integer loop
2851 increments different from 1; fixing this turned out also to fix
2853 * bug 169 fixed: no more bogus warnings about using lexical bindings
2854 despite the presence of perfectly good SPECIAL declarations (thanks
2855 to David Lichteblau)
2856 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2857 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2858 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2860 * bug 180 fixed: Method combination specifications no longer ignore
2861 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2862 * bug fix: Structure type predicate functions now check their argument
2863 count as they should.
2864 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2865 correctly. (thanks to Pierre Mai)
2866 * minor incompatible change: The --noprogrammer option is deprecated
2867 in favor of the new --disable-debugger option, which is very similar.
2868 (The major difference is that it takes effect at a slightly different
2869 time at startup, causing handling of errors in --sysinit and
2870 --userinit files will be affected differently.) The
2871 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2872 been added to allow this functionality to be controlled from ordinary
2873 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2874 maintainers, who might want to run non-interactive scripts to
2875 build SBCL cores which will later be used interactively.)
2876 * minor incompatible change: The LOAD function no longer, when given
2877 a wild pathname to load, loads all files matching that pathname.
2878 Instead, an error of type FILE-ERROR is signalled.
2880 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2881 * bug 147 fixed: The compiler preserves its block link/count
2882 invariants more correctly now so that it doesn't crash. (thanks
2884 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2886 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2887 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2888 no-value-for-this-character as NIL (as specified by ANSI).
2889 * HOST-NAMESTRING on physical pathnames now returns a string that is
2890 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2891 (thanks to Christophe Rhodes)
2892 * The Alpha port handles icache flushing more correctly. (thanks to
2894 * More progress has been made toward bootstrapping under CLISP. (thanks
2895 to Christophe Rhodes)
2896 * The fasl file format has changed again, because dynamic loading
2897 on OpenBSD (which has non-ELF object files) motivated some cleanups
2898 in the way that foreign symbols are transformed and passed around.
2899 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2900 is no longer treated as whitespace by the reader, but instead as
2901 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2902 |A
\7fB|, instead of A as it used to.
2904 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2905 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2906 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2907 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2908 this as of 0.7.1.45, but was left out of the previous news section
2909 (thanks to Dan Barlow)
2910 * SBCL now runs on the Solaris operating system on SPARC architectures
2911 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2912 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2913 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2914 * SPARC backend cleanups, allowing builds of cores optimized for V8
2915 and V9 SPARCS, and also emission of code targeted to a particular
2916 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2918 * SBCL is closer to bootstrapping under CLISP, thanks to various
2919 fixes by Christophe Rhodes.
2920 * The fasl file format has changed again, to allow the compiler's
2921 INFO database to support symbol macros.
2922 * The user manual (in doc/) is formatted into HTML more nicely.
2923 (thanks to coreythomas)
2924 * The system is smarter about SUBTYPEP relationships, especially
2925 those involving NOT types (including types such as ATOM which are
2926 represented internally using NOT types). Thus SUBTYPEP is less
2927 likely to return (VALUES NIL NIL) in general, and in particular
2928 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2930 * The fasl file format has changed again, because the internal
2931 representation of types now includes a new slot to support the new
2932 SUBTYPEP-of-NOT-types logic.
2933 * (not a change in the main branch of SBCL, but a related prototype
2934 which can hopefully be merged into the main branch of SBCL in the
2935 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2936 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2937 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2938 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2939 dispatch macro character combinations. (thanks to Alexey Dejneka)
2940 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2941 that superficially look like logical namestrings correctly.
2942 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2944 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2945 default supplied-p) for &optional and &key arguments. (thanks to
2948 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2949 * incompatible change: The compiler is now less aggressive about
2950 tail call optimization, doing it only when (> SPACE DEBUG) or
2951 (> SPEED DEBUG). (This is an incompatible change because there are
2952 programs which relied on the old CMU-CL-style behavior to optimize
2953 away their unbounded recursion which will now die of stack overflow.)
2954 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2955 for non-GENCGC systems has been increased to 20M (since that
2956 seems much closer to the likely performance optimum for modern
2957 systems than the old 4M value was)
2958 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2959 and *DEBUG-PRINT-LEVEL*
2960 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2961 of CMU CL's support for SPARC, and various endianness and other
2962 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2963 * new syntactic sugar for the Unix command line: --load foo.bar is now
2964 an alternate notation for --eval '(load "foo.bar")'.
2966 ** The system now detects stack overflow and handles it gracefully,
2967 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2968 optimization settings. (This is a good thing in general, and
2969 its introduction in this version should be particularly timely
2970 for anyone whose code fails because of suppression of tail
2972 ** The system now hunts for the C variable "environ" in a more
2973 devious way, to avoid segfaults when the C library version differs
2974 between compile time and run time. (thanks to Christophe Rhodes)
2975 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2976 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2977 ** The compiler no longer issues bogus style warnings for undefined
2978 classes in the same source file as the DEFCLASSes which defined
2979 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2981 ** fixes in CONDITION class precedence list for undefined function
2982 errors (thanks to Alexei Dejneka)
2983 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2984 correctly. (thanks to Dan Barlow)
2985 ** portability fixes aiming at bootstrapping under CLISP (thanks
2986 to Dave McDonald and Christophe Rhodes)
2987 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2988 ** fixes in type translation and and type inference (thanks to
2990 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2991 ** various fixes in the new ports (thanks to Dan Barlow)
2992 * several changes related to debugging:
2993 ** suppression of tail recursion, as noted above
2994 ** stack overflow detection, as noted above
2995 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2996 is now the default. (For some time encapsulation has been more
2997 reliable than the breakpoint-based :ENCAPSULATE NIL
2998 implementation, at least on X86 systems; and I just noticed that
2999 encapsulation also seems closer to the spirit of the ANSI
3002 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3004 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3005 up properly again. (There was a packaging bug in 0.7.0 which
3006 left their definitions in SB-SYS::LOAD-FOREIGN and
3007 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3008 vital for most things which interface to C-level interfaces,
3009 like extensions working with sockets or databases or
3010 Perl-compatible regexes or whatever, and the need to fix
3011 this bug is the main reason that 0.7.1 was released so
3013 ** DEFGENERIC is now choosier about the methods it redefines, so that
3014 reLOADing a previously-LOADed file containing DEFGENERICs does
3015 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3016 cycle now works as it should. (thanks to Alexey Dejneka)
3017 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3018 fixed by Christophe Rhodes. (He actually submitted this patch
3019 months ago, and I delayed until after 0.7.0.)
3020 ** Bug 111 (internal compiler confusion about runtime checks on
3021 FUNCTION types) was fixed by Alexey Dejneka.
3022 * Some internal cleanups (getting rid of variables which aren't
3023 needed now that the byte interpreter is gone) caused the fasl
3024 file format number to change again.
3026 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3027 * major incompatible change: The default fasl file extension, i.e. the
3028 default extension for files produced by COMPILE-FILE, has changed
3029 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3031 ** There are many changes in the implementation of the compiler.
3032 SBCL is now essentially a compiler-only implementation of ANSI
3033 Common Lisp. EVAL still "interprets" a few special cases, but
3034 almost all the interesting cases are handled by creating
3035 a LAMBDA expression, calling COMPILE on it, then calling
3036 FUNCALL on the result.
3037 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3038 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3039 Since the code is newer, there might still be some new bugs
3040 (though not as many as before Martin Atzmueller's fixes:-). But
3041 the new code is substantially simpler and clearer, and hopefully
3042 any remaining bugs will be simpler, less fundamental, and more
3043 fixable then the bugs in the old code.
3044 ** The revised compiler is still a little unsteady on its feet.
3046 *** The debugging information it produces (particularly the names
3047 of FUNCTION objects) is sometimes much less useful than what
3048 the old compiler produced.
3049 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3050 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3051 within a MACROLET) has been temporarily weakened.
3052 ** There are new compiler optimizations for various functions:
3053 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3054 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3055 *** the math functions TRUNCATE, FLOOR, and CEILING
3056 *** the function-of-all-trades COERCE
3057 Mostly these should be transparent, but there's one
3058 potentially-annoying problem (bug 117): when the compiler
3059 inline-expands a function and does type analysis on the result,
3060 it can create control paths which have type mismatches, and
3061 when it can't prove that those control paths aren't taken,
3062 it will issue WARNINGs about the type mismatches. This is
3063 a particular problem in practice for the new sequence functions.
3064 It's not clear how this should be fixed, and for now, a
3065 workaround is given in the entry for 117 in the BUGS file.
3066 ** (Because of the interaction between the two previous items --
3067 occasional inlining problems and new inline expansions -- some
3068 of the new sequence function optimizations won't really kick in
3069 completely until debugging information, and then inlining, are
3070 straightened out in some future version.)
3071 * minor incompatible changes:
3072 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3073 DIRECTORY no longer implicitly promotes NIL slots of its
3074 pathname argument to :WILD. In particular, when you ask for the
3075 contents of a directory (which you used to be able to do without
3076 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3077 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3078 ** changes in behavior that ANSI explicitly defines to be
3079 implementation dependent:
3080 *** The new compiler-only implementation still conforms with ANSI,
3081 but acts a little different than before. Besides the obvious
3082 changes in performance tradeoffs (that the cost per form passed
3083 to EVAL has gone up, and the cost per form executed by EVAL
3084 has gone down), the behavior of the system changes a little
3085 because there are no longer any interpreted function objects.
3086 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3087 e.g. doing COMPILE on the output of interactive DEFUN is
3089 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3091 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3092 has changed from (:CL) to NIL.
3093 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3094 e.g. #\Newline and #\Tab, don't have names specified in the
3095 ANSI Common Lisp standard, is now based on their ASCII symbolic
3096 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3097 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3098 are no longer used for output.
3099 ** changes in internal implementation constants:
3100 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3101 4 million. (If your application spends a lot of time GCing and
3102 you have a lot of RAM, you might want to experiment with
3103 increasing it even more.)
3104 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3105 However, almost all old code should still continue to work without
3106 immediate update, as SB-C-CALL is now a (deprecated) nickname
3108 ** Old operator names in the style DEF-FOO are now deprecated in
3109 favor of new corresponding names DEFINE-FOO, for consistency with
3110 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3111 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3112 internal symbols, but a few supported extensions like
3113 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3114 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3115 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3116 etc. as you get deeper into recursive calls to the debugger
3117 command loop, instead of the old "5]", "5]]", "5]]]"
3118 sequence. (I was motivated to do this when squabbles between
3119 ILISP and SBCL left me very deeply nested in the debugger. In the
3120 short term, this change will probably provoke more ILISP/SBCL
3121 squabbles, but hopefully it will be an improvement in the long run.)
3122 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3123 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3124 function, since declaiming return types involving aliens is
3125 (1) annoyingly messy to do by hand and (2) vital to efficient
3126 compilation of code which calls such functions.
3127 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3128 longer reexported by the SB-EXT package. They're solely useful
3129 for alien code, so it seems more logical that you should get
3130 them from the SB-ALIEN package, not in SB-EXT.
3131 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3132 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3133 features. Instead, the code that they used to control is always
3134 built into the system.
3135 * many other bug fixes
3136 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3137 advantage of the new EVAL-WHEN stuff and to clean them up in
3138 general, and they are now more ANSI-compliant in a number of
3139 ways. Martin Atzmueller is responsible for a lot of this.
3140 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3142 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3143 *** correct ERROR type for various file operations
3144 *** some fixes for Lisp streams
3145 *** DEFMETHOD syntax checking
3146 *** changing old weird representation of debug information as
3147 strings (which, among their other deficiencies, don't transform
3148 correctly when you rename packages, and don't change their
3149 print representation when you change things like *PACKAGE*
3150 and *PRINT-LENGTH*) to symbols and lists of symbols
3151 He also made several improvements and fixed several bugs in DESCRIBE.
3152 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3154 *** misbehavior of WRITE-STRING/WRITE-LINE
3155 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3156 and several other LOOP problems as well
3157 *** DIRECTORY when similar filenames are present
3158 *** DEFGENERIC with :METHOD options
3159 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3160 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3161 *** argument ordering in FIND with :TEST option
3162 *** mishandled package designator argument in APROPOS-LIST
3163 *** various problems in the backquote readmacro
3164 *** a bug in APROPOS
3165 *** probably some others that I'm not describing very well here,
3166 since the CVS log documents them by reference to sbcl-devel
3167 messages, and the SourceForge archives aren't working well.:-(
3168 ** Dan Barlow improved the Alpha port (and is making progress on the
3169 PPC port, for those of you who think different).
3170 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3171 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3172 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3173 continues to work on the SPARC port (for those of you in a position
3174 to look down upon our little PC-compatible boxes from a great height).
3175 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3176 and uses that copy, rather than the current dynamic value, when
3177 it's trying to decide whether to truncate output. Thus e.g.
3178 (let ((*print-lines* 50))
3179 (pprint-logical-block (stream nil)
3181 (let ((*print-lines* 8))
3182 (print (aref possiblybigthings i) stream)))))
3183 should now truncate the logical block only at 50 lines, instead of
3184 often truncating it at 8 lines, as it did before.
3185 * The doc/cmucl/ directory, containing old CMU CL documentation
3186 from the time of the fork, is no longer part of the base system.
3187 SourceForge has shut down its anonymous FTP service, and with it
3188 my original plan for distributing the old CMU CL documentation
3189 there. For now, if you need these files you can download an old
3190 SBCL source release and extract them from it.
3191 * The fasl file version number changed again, for dozens of reasons,
3192 some of which are apparent above.
3194 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3195 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3196 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3197 patch, so that DISASSEMBLE output is much nicer.
3198 * The code in the SB-PROFILE package now seems reasonably stable.
3199 I still haven't decided what the final interface should look like
3200 (I'd like PROFILE to interact cleanly with TRACE, since both
3201 facilities use function encapsulation) but if you have a need
3202 for profiling now, you can probably use it successfully with
3203 the current CMU-CL-style interface.
3204 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3205 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3206 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3207 link now returns the dangling link itself, and for similar
3208 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3209 link itself. (In these cases the old code signalled an error and
3210 looped endlessly, respectively.) Thus, DIRECTORY now works even
3211 in the presence of dangling and cyclic symbolic links.
3212 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3213 is now a supported extension again, since the consensus on
3214 sbcl-devel was that it can be useful for ordinary development
3215 work, not just for debugging SBCL itself.
3216 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3217 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3218 that currently-defined functions might be redefined later with
3219 different return types.
3220 * Hash tables can be printed readably, as inspired by CMU CL code
3221 of Eric Marsden and SBCL code of Martin Atzmueller.
3222 * better error handling in CLOS method combination, thanks to
3223 Martin Atzmueller porting Pierre Mai's CMU CL patches
3224 * more overflow fixes for >16Mbyte I/O buffers
3225 * A bug in READ has been fixed, so that now a single Ctrl-D
3226 character suffices to cause end-of-file on character streams.
3227 In particular, now you only need one Ctrl-D at the command
3228 line (not two) to exit SBCL.
3229 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3231 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3232 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3233 does the right thing.
3234 * The implementation of some type tests, especially for CONDITION
3235 types, is now tidier and maybe faster, due to CMU CL code
3236 originally by Douglas Crosher, ported by Martin Atzmueller.
3237 * Some math functions have been fixed, and there are new
3238 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3239 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3240 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3241 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3242 likely to be built into sbcl-0.7.0.)
3243 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3244 CL, ported to SBCL by Martin Atzmueller)
3245 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3246 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3247 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3248 * There's a new slam.sh hack to shorten the edit/compile/debug
3249 cycle for low-level changes to SBCL itself, and a new
3250 :SB-AFTER-XC-CORE target feature to control the generation of
3251 the after-xc.core file needed by slam.sh.
3252 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3253 COMPILE-FILE is no longer supported, so that now every function
3254 gets an entry point, so that block compilation looks a little
3255 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3256 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3257 returns the number of bytes consed since the system started,
3258 rather than the number consed since the first time the function
3259 was called. (The new definition parallels ANSI functions like
3260 CL:GET-INTERNAL-RUN-TIME.)
3261 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3262 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3263 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3264 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3265 * Fasl file version numbers are now independent of the target CPU,
3266 since historically most system changes which required version
3267 number changes have affected all CPUs equally. Similarly,
3268 the byte fasl file version is now equal to the ordinary
3271 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3272 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3273 is no longer recognized. I apologize for this, because it was
3274 listed in SB-EXT as a supported extension, but I found that
3275 its existing behavior was poorly specified, as well as incorrectly
3276 specified, and it looked like too much of a mess to straighten it
3277 out. I have enough on my hands trying to get ANSI stuff to work..
3278 * many patches ported from CMU CL by Martin Atzmueller, with
3279 half a dozen bug fixes in pretty-printing and the debugger, and
3280 half a dozen others elsewhere
3281 * fixed bug 13: Floating point infinities are now supported again.
3282 They might still be a little bit flaky, but thanks to bug reports
3283 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3284 as flaky as they were.
3285 * The --noprogrammer command line option is now supported. (Its
3286 behavior is slightly different in detail from what the old man
3287 page claimed it would do, but it's still appropriate under the
3288 same circumstances that the man page talks about.)
3289 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3290 are now supported, and enabled by default. Thus, the compiler can
3291 handle many floating point and complex operations much less
3292 inefficiently. (Thus e.g. you can implement a complex FFT
3294 * The compiler now detects type mismatches between DECLAIM FTYPE
3295 and DEFUN better, and implements CHECK-TYPE more correctly, and
3296 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3297 thanks to patches from Martin Atzmueller.
3298 * various fixes to make the cross-compiler more portable to
3299 ANSI-conforming-but-different cross-compilation hosts (notably
3300 Lispworks for Windows, following bug reports from Arthur Lemmens)
3301 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3302 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3303 fixed thanks to Pierre Mai's CMU CL patches.
3304 * fixes to keep the system from overflowing internal counters when
3305 it tries to use i/o buffers larger than 16M bytes
3306 * fixed bug 45a: Various internal functions required to support
3307 complex special functions have been merged from CMU CL sources.
3308 (When I was first setting up SBCL, I misunderstood a compile-time
3309 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3310 * improved support for type intersection and union, fixing bug 12
3311 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3312 more obscure bugs as well
3313 * some steps toward byte-compiling non-performance-critical
3314 parts of the system, courtesy of patches from Martin Atzmueller
3315 * Christophe Rhodes has made some debian packages of sbcl at
3316 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3317 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3318 stable, but are nonetheless usable. When he's ready, I'd be happy
3319 to add them to the SourceForge "File Releases" section. (And if
3320 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3321 * new fasl file format version number (because of changes in
3322 internal representation of (OR ..) types to accommodate the new
3323 support for (AND ..) types, among other things)
3325 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3326 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3328 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3330 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3331 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3332 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3333 * DESCRIBE now works on structure objects again.
3334 * Most function call argument type mismatches are now handled as
3335 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3336 know whether the function will be redefined before the call is
3337 executed. (The compiler could flag local calls with full WARNINGs,
3338 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3339 it doesn't keep track of enough information to know whether calls
3340 are local in this sense.)
3341 * Compiler output is now more verbose, with messages truncated
3342 later than before. (There should be some supported way for users
3343 to override the default verbosity, but I haven't decided how to
3344 provide it yet, so this behavior is still controlled by the internal
3345 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3346 src/compiler/ir1util.lisp.)
3347 * Fasl file format version numbers have increased again, because
3348 support for the Gray streams extension changes the layout of the
3349 system's STREAM objects.
3350 * The Gray subclassable streams extension now works, thanks to a
3351 patch from Martin Atzmueller.
3352 * The full LOAD-FOREIGN extension (not just the primitive
3353 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3354 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3355 but like most other programs, it defaults to copying the Unix
3356 environment from the original process instead of starting the
3357 new process in an empty environment.
3358 * Extensions which manipulate the Unix environment now support
3359 an :ENVIRONMENT keyword option which doesn't smash case or
3360 do other bad things. The CMU-CL-style :ENV option is retained
3361 for porting convenience.
3362 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3363 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3365 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3367 * A patch from Martin Atzmueller seems to have solved the SIGINT
3368 problem, and as far as we know, signal-handling now works cleanly.
3369 (If you find any new bugs, please report them!)
3370 * The system no longer defaults Lisp source file names to types
3371 ".l", ".cl", or ".lsp", but only to ".lisp".
3372 * The compiler no longer uses special default file extensions for
3373 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3374 seems to expect a single default extension for all compiled code,
3375 and there's no compelling reason to try to stretch the standard
3376 to allow two different extensions.) Instead, byte-compiled files
3377 default to the same extension as native-compiled files.
3378 * Fasl file format version numbers have increased again, because
3379 a rearrangement of internal implementation packages made some
3380 dumped symbols in old fasl files unreadable in new cores.
3381 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3382 many fewer weird special cases.
3383 * Bug #17 (differing COMPILE-FILE behavior between logical and
3384 physical pathnames) has been fixed, and some related misbehavior too,
3385 thanks to a patch from Martin Atzmueller.
3386 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3387 by Tim Moore, ported to SBCL by Martin Atzmueller.
3388 * Martin Atzmueller fixed several filesystem-related problems,
3389 including bug #36, in part by porting CMU CL patches, which were
3390 written in part by Paul Werkowski.
3391 * More compiler warnings in src/runtime/ are gone, thanks to
3392 more patches from Martin Atzmueller.
3393 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3396 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3398 * DESCRIBE now works on CONDITION objects.
3399 * The debugger now handles errors which arise when trying to print
3400 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3402 * The build system now uses an additional file, customize-target-features.lisp,
3403 to allow local modifications to the target *FEATURES* list. (The point of
3404 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3405 debugging features enabled, without having to worry about propagating it
3406 into everyone's system when I do a "cvs update".) When no
3407 customize-target-features.lisp file exists, the target *FEATURES* list
3408 should be constructed the same way as before.
3409 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3410 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3411 warn about behavior which is undefined under the ANSI spec. Note: This
3412 is specified by ANSI, but it's not very popular with programmers.
3413 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3414 macro in the SBCL sources for an example of a workaround which you
3415 might use to make portable ANSI-standard code which does what you want.
3416 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3417 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3418 when it's used as a non-toplevel form. (This is required in order
3419 to implement the DEFCONSTANT-EQX macro.)
3420 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3421 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3422 funny things, due to bugs in the implementation of EVAL-WHEN
3423 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3424 non-toplevel DEFCONSTANTs are uncommon.)
3425 * The core file version number and fasl file version number have been
3426 incremented, because the old noncompliant DEFCONSTANT behavior involved
3427 calling functions which no longer exist, and because I also took the
3428 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3429 * fixed bug 1 (error handling before read-eval-print loop starts), and
3430 redid debugger restarts and related debugger commands somewhat while
3432 ** The QUIT debugger command is gone, since it did something
3433 rather different than the SB-EXT:QUIT command, and since it never
3434 worked properly outside the main toplevel read/eval/print loop.
3435 Invoking the new TOPLEVEL restart provides the same functionality.
3436 ** The GO debugger command is also gone, since you can just invoke
3437 the CONTINUE restart directly instead.
3438 ** The TOP debugger command is also gone, since it's redundant with the
3439 FRAME 0 command, and since it interfered with abbreviations for the
3441 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3443 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3444 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3445 some porting work by Martin Atzmueller)
3446 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3447 with a boatload of patches which he ported to SBCL. Now that those
3449 ** The system tries to make sure that its low-priority messages
3450 are prefixed by semicolons, to help people who like to use
3451 syntax highlighting in their ILISP buffer. (This patch
3452 was originally due to Raymond Toy.)
3453 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3454 patches originally written by Raymond Toy.
3455 ** The compiler understands coercion between single-value and
3456 multiple-VALUES type expressions better, getting rid of some very
3457 weird behavior, thanks to patches originally by Robert MacLachlan
3458 and Douglas Crosher.
3459 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3460 lambda lists, thanks to a patch originally by Pierre Mai.
3461 ** The system no longer bogusly warns about "abbreviated type
3463 ** The compiler gets less confused by inlining and RETURN-FROM,
3464 thanks to some patches originally by Tim Moore.
3465 ** The system no longer hangs when dumping circular lists to fasl
3466 files, thanks to a patch originally from Douglas Crosher.
3467 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3468 undefined function error.
3469 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3470 in structure slot initforms) for now, documented workaround instead:-|
3471 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3472 * fixed bug 5: added stubs for various Gray stream functions called
3473 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3474 installed, at least appropriate type errors are generated
3475 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3476 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3477 consistently in DEFMETHOD forms.
3478 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3479 it doesn't seem to affect SBCL after all
3480 * The C runtime system now builds with better optimization and many
3481 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3483 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3485 * The system is now under CVS at SourceForge (instead of the
3486 CVS repository on my home machine).
3487 * The new signal handling code has been tweaked to treat register
3488 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3489 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3490 downstream, e.g. in debug-int.lisp, has implicit dependencies
3491 on the unsignedness of integer representation of machine words,
3492 and that caused the system to bomb out with infinite regress
3493 when trying to recover from type errors involving signed values,
3494 e.g. (BUTLAST '(1 2 3) -1).)
3495 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3496 (This was one of the bugs Peter Van Eynde reported back in July.)
3497 * The system now uses code inspired by Colin Walters' O(N)
3498 implementation of MAP (from the cmucl-imp@cons.org mailing
3499 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3500 inline the MAP operation, and there is more than one
3501 sequence argument to the MAP call (so that it can't just
3502 do ETYPECASE once and for all based on the type of the
3503 single sequence argument). (The old non-inline implementation
3504 of the general M-argument sequence-of-length-N case required
3505 O(M*N*N) time when any of the sequence arguments were LISTs.)
3506 * The QUIT :UNIX-CODE keyword argument has been renamed to
3507 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3508 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3510 * Raymond Wiker's patches to port dynamic loading from Linux to
3511 FreeBSD have been added.
3512 * The BUGS file is now more nearly up to date, thanks in large part
3513 to Martin Atzmueller's review of it.
3514 * The debugger now flushes standard output streams before it begins
3515 its output ("debugger invoked" and so forth).
3516 * The core version number and fasl file version number have both
3517 been incremented, because of incompatible changes in the layout
3519 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3520 used to not be called for a saved Lisp image.)
3521 * Martin Atzmueller's version of a patch to fix a compiler crash,
3522 as posted on sbcl-devel 13 September 2000, has been installed.
3523 * Instead of installing Martin Atzmueller's patch for the
3524 compiler transform for SUBSEQ, I deleted the compiler transform,
3525 and transforms for some similar consing operations.
3526 * A bug in signal handling which kept TRACE from working on OpenBSD
3528 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3529 away by constant folding
3530 * The system now defines its address space constants in one place
3531 (in the Lisp sources), and propagates them automatically elsewhere
3532 (through GENESIS and the sbcl.h file). Therefore, patching the
3533 address map is less unnecessarily tedious and error-prone. The
3534 Lisp names of address space constants have also been systematized.
3535 * CVS tags like dollar-Header-dollar have been removed from
3536 the sources, because they have never saved me trouble and
3537 they've been source of trouble working with patches and other
3538 diff-related operations.
3539 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3540 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3542 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3544 * The system has been ported to OpenBSD.
3545 * The system now compiles with a simple "sh make.sh" on the systems
3546 that it's supported on. I.e., now you no longer need to tweak
3547 text in the target-features.lisp-expr and symlinks in src/runtime/
3548 by hand, the make.sh takes care of it for you.
3549 * The system is no longer so grossly inefficient when compiling code
3550 involving vectors implemented as general (not simple) vectors (VECTOR T),
3551 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3552 which dares to use the various sequence functions on non-simple
3553 vectors, takes less of a performance hit.
3554 * There is now a primitive type predicate VECTOR-T-P
3555 to test for the (VECTOR T) type, so that e.g.
3556 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3557 can now be compiled with some semblance of efficiency. (The old code
3558 turned the type declaration into a full call to %TYPEP at runtime!)
3559 * AREF on (VECTOR T) is still not fast, since it's still compiled
3560 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3561 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3562 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3563 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3564 without making full calls to SUBTYPEP at runtime.
3565 (Some analogous efficiency issues for non-simple vectors specialized to
3566 element types other than T, or for non-simple multidimensional arrays,
3567 have not been addressed. They could almost certainly be handled the
3568 same way if anyone is motivated to do so.)
3569 * The changes in array handling break binary compatibility, so
3570 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3571 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3572 instead of (VALUES T T).
3573 * By following the instructions that Dan Barlow posted to sbcl-devel
3574 on 2 July 2000, I was able to enable primitive dynamic object
3575 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3576 functionality is not implemented (since it calls ld to resolve
3577 library references automatically, requiring RUN-PROGRAM for its
3578 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3579 try to resolve library references) is now supported.
3580 * The system now flushes the standard output streams when it terminates,
3581 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3582 them at several other probably-convenient times, e.g. in each pass of
3583 the toplevel read-eval-print loop, and after evaluating a form given
3584 as an "--eval" command-line option. (These changes were motivated by a
3585 discussion of stream flushing issues on cmucl-imp in August 2000.)
3586 * The source transform for TYPEP of array types no longer assumes
3587 that an array whose element type is a not-yet-defined type
3588 is implemented as an array of T, but instead punts, so that the
3589 type will be interpreted at runtime.
3590 * There is now some support for cross-compiling in make.sh: each of
3591 the phases of make.sh has its own script. (This should be transparent
3592 to people doing ordinary, non-cross-compile builds.)
3593 * Since my laptop doesn't have hundreds of megabytes of memory like
3594 my desktop machine, I became more motivated to do some items on
3595 my to-do list in order to reduce the size of the system a little:
3596 ** Arrange for various needed-only-at-cold-init things to be
3597 uninterned after cold init. To support this, those things have
3598 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3599 symbols with such names are now uninterned after cold init).
3600 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3601 fasl files for cold load.
3602 ** Remove the old compiler structure pooling code (which used to
3603 be conditional on the target feature :SB-ALLOC) completely.
3604 ** Redo the representation of some data in cold init to be more compact.
3605 (I also looked into supporting byte compiled code at bootstrap time,
3606 which would probably reduce the size of the system a lot, but that
3607 looked too complicated, so I punted for now.)
3608 * The maximum signal nesting depth in the src/runtime/ support code has
3609 been reduced from 4096 to 256. (I don't know any reason for the very
3610 large old value. If the new smaller value turns out to break something,
3611 I'll probably just bump it back up.)
3612 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3614 * Many, many bugs reported by Peter Van Eynde have been added to
3615 the BUGS list; some have even been fixed.
3616 * While enabling dynamic object file loading, I tried to make the
3617 code easier to understand, renaming various functions and variables
3618 with less ambiguous names, and changing some function calling
3619 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3620 * While trying to figure out how to do the OpenBSD port, I tried to
3621 clean up some of the code in src/runtime/. In particular, I dropped
3622 support for non-POSIX signal handling, added various comments,
3623 tweaked the code to reduce the number of compilation warnings, and
3624 renamed some files to increase consistency.
3625 * To support the new automatic configuration functionality in make.sh,
3626 the source file target-features.lisp-expr has been replaced with the
3627 source file base-target-features.lisp-expr and the machine-generated
3628 file local-target-features.lisp-expr.
3629 * fixed a stupid quoting error in make.sh so that using CMU CL
3630 "lisp -batch" as cross-compilation host works again
3632 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3634 * DESCRIBE no longer tries to call itself recursively to describe
3635 bound/fbound values, so that it no longer fails on symbols which are
3636 bound to themselves (like keywords, T, and NIL).
3637 * DESCRIBE now works on generic functions.
3638 * The printer now prints less-screwed-up representations of closures
3639 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3640 * A private symbol is used instead of the :EMPTY keyword previously
3641 used to mark empty slots in hash tables. Thus
3642 (DEFVAR *HT* (MAKE-HASH-TABLE))
3643 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3644 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3645 now does what ANSI says that it should. (You can still get
3646 similar noncompliant behavior if bang on the hash table
3647 implementation with all the symbols you get back from
3648 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3649 This breaks binary compatibility, since tests for equality to
3650 :EMPTY are wired into things like the macroexpansion of
3651 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3653 * There's now a minimal placeholder implementation for CL:STEP,
3654 as required by ANSI.
3655 * An obscure bug in the interaction of the normal compiler, the byte
3656 compiler, inlining, and structure predicates has been patched
3657 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3658 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3660 * Missing ordinary arguments in a macro call are now detected even
3661 when the macro lambda list contains &KEY or &REST.
3662 * The debugger no longer complains about encountering the top of the
3663 stack when you type "FRAME 0" to explicitly instruct it to go to
3664 the top of the stack. And it now prints the frame you request even
3665 if it's the current frame (instead of saying "You are here.").
3666 * As specified by ANSI, the system now always prints keywords
3667 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3669 * The default initial SIZE of HASH-TABLEs is now smaller.
3670 * Type information from CLOS class dispatch is now propagated
3671 into DEFMETHOD bodies, so that e.g.
3672 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3674 is now basically equivalent to
3675 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3676 (DECLARE (TYPE SINGLE-FLOAT X))
3678 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3679 operation, without having to do run-time type dispatch.
3680 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3681 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3682 * Since I don't seem to be making big file reorganizations very often
3683 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3684 is overflowing my ability to conveniently back them up), I've finally
3685 checked the system into CVS. (The CVS repository is on my home system,
3686 not at SourceForge -- putting it on SourceForge might come later.)
3687 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3688 high-level GC-NOTIFY-FOO functions send their output. (There's
3689 still very little control of where low-level verbose GC functions
3690 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3691 less than it used to -- the GC-NOTIFY-FOO functions are now under
3692 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3693 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3694 in only one place in the source code, and propagates it automatically
3695 everywhere that it's needed. Thus e.g. when I bump the version from
3696 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3697 * The C source files now include boilerplate legalese and documentation
3698 at the head of each file (just as the Lisp source files already did).
3699 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3700 to his page will be replaced with a link to his new CLiki service.
3702 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3704 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3705 * The build process now looks for GNU make under the default name "gmake",
3706 instead of "make" as it used to. If GNU make is not available as "gmake"
3707 on your system, you can change this default behavior by setting the
3708 GNUMAKE environment variable.
3709 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3710 can build without error under CMU CL.
3712 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3714 * There is now a partial SBCL user manual (with some new text and some
3715 text cribbed from the CMU CL manual).
3716 * The beginnings of a profiler have been added (starting with the
3717 CMU CL profiler and simplifying and cleaning up). Eventually the
3718 main interface should be through the TRACE macro, but for now,
3719 it's still accessed through vaguely CMU-CL-style functions and macros
3720 exported from the package SB-PROFILE.
3721 * Some problems left over from porting CMU CL to the new
3722 cross-compilation bootstrap process have been cleaned up:
3723 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3724 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3725 part when getting rid of the compiler *BACKEND* stuff.)
3726 ** The value of *NULL-TYPE* was screwed up, because it was
3727 being initialized before the type system knew the final
3728 definition of the 'NULL type. This screwed up several key
3729 optimizations in the compiler, causing inefficiency in all sorts
3730 of places. (I found it because I wanted to understand why
3731 GET-INTERNAL-RUN-TIME was consing.)
3732 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3733 PROCLAIM FTYPE information. Unfortunately this broke binary
3734 compatibility again, since now the forms output by DEFGENERIC
3735 to refer to functions which didn't exist in 0.6.3.
3736 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3737 can use the new (as of 0.6.3) transform for SOME into MAP into
3739 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3740 values to (INTEGER 0 1000000), so that the time code will no longer
3741 occasionally get blown up by Linux returning 1000000 microseconds
3742 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3743 its output conform to the ANSI spec. (Alas, this makes its output
3744 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3745 * A full call to MAP NIL with a single sequence argument no longer conses.
3746 * fixes to problems pointed out by Martin Atzmueller:
3747 * The manual page no longer talks about multiprocessing as though
3748 it were currently supported.
3749 * The ILISP support patches have been removed from the distribution,
3750 because as of version 5.10.1, ILISP now supports SBCL without us
3751 having to maintain patches.
3752 * added a modified version of Raymond Toy's recent CMU CL patch for
3753 EQUALP comparison of HASH-TABLE
3755 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3757 * The system still can't cross-compile itself with
3758 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3759 entails), but at least it can compile more of itself that way
3760 than it used to be able to, and various buglets which were uncovered
3761 by trying to cross-compile itself that way have now been fixed.
3762 * This release breaks binary compatibility again. This time
3763 at least I've incremented the FASL file format version to 2, so that the
3764 problem can be detected reliably instead of just causing weird errors.
3765 * various new style warnings:
3766 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3767 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3768 ** using the lexical binding of a variable named in the *FOO* style
3769 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3770 as specified by ANSI.
3771 * *RANDOM-STATE* is no longer automatically initialized from
3772 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3773 default behavior of the system is to repeat its behavior every time
3774 it's run. If you'd like to change this behavior, you can always
3775 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3776 old convention there was no comparably easy way to get the system to
3777 repeat its behavior every time it was run.
3778 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3779 FTYPE declarations has been removed, in favor of their ANSI
3780 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3781 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3782 the types of their sequence arguments can be determined at compile time.
3783 This is done through a new open code expansion for MAP which eliminates
3784 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3785 argument types can be determined at compile time.
3786 * The optimizer now transforms COERCE into an identity operation when it
3787 can prove that the coerced object is already of the correct type. (This
3788 can be a win for machine generated code, including the output of other
3789 optimization transforms, such as the MAP transform above.)
3790 * Credit information has been moved from source file headers into CREDITS.
3791 * Source file headers have been made more standard.
3792 * The CASE macro now compiles without complaining even when it has
3795 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3797 * (Note that the way that the PCL macroexpansions were rewritten
3798 to accommodate the change in DEFGENERIC below breaks binary
3799 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3800 not run under sbcl-0.6.2. Once we get out of alpha releases,
3801 i.e. hit release 1.0.0, we'll probably try to maintain binary
3802 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3803 and sbcl-1.4.4. Until then, however, it might be fairly common
3804 for maintenance releases to break binary compatibility.)
3805 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3807 * The reporting of unhandled signals has been changed to print some
3808 explanatory text as well as the report form. (Previously only
3809 the report form was printed.)
3810 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3811 it defines, so that the compiler no longer issues undefined function
3812 warnings for compiled-but-not-yet-loaded generic functions.
3813 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3814 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3815 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3816 section of the ANSI spec are supported.
3817 * The "" nickname for the "KEYWORD" package has been removed.
3818 The reader still handles symbol tokens which begin with a package marker
3819 as keywords, but it doesn't expose its mechanism for doing so in the
3820 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3821 * The system now issues STYLE-WARNINGs for contradictory TYPE
3822 proclamations. (Warnings for contradictory FTYPE proclamations would
3823 be nice too, but those can't be done usefully unless the type system
3824 is made smarter about FUNCTION types.)
3825 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3826 systematized, so that "*target-*.lisp is supposed to exist only on the
3827 target and imply that there's a related file which exists on the
3828 host, and *host-*.lisp is supposed to exist only on the host and imply
3829 that there's a related file which exists on the target. This involves a
3830 lot of renaming. Hopefully the acute confusion caused by the renaming
3831 will be justified by the reduction in chronic confusion..
3832 ** runtime-type.lisp -> early-target-type.lisp
3833 ** target-type.lisp -> late-target-type.lisp
3834 ** early-host-format.lisp -> early-format.lisp
3835 ** late-host-format.lisp -> late-format.lisp
3836 ** host-error.lisp -> misc-error.lisp
3837 ** early-error.lisp -> early-target-error.lisp
3838 ** late-error.lisp -> late-target-error.lisp
3839 ** host-defboot.lisp -> early-defboot.lisp
3840 ** code/misc.lisp -> code/target-misc.lisp
3841 ** code/host-misc.lisp -> code/misc.lisp
3842 ** code/numbers.lisp -> code/target-numbers.lisp
3843 ** code/early-numbers.lisp -> numbers.lisp
3844 ** early-host-type.lisp -> early-type.lisp
3845 ** late-host-type.lisp -> late-type.lisp
3846 ** host-typep.lisp -> typep.lisp
3847 ** load.lisp -> target-load.lisp
3848 ** host-load.lisp -> load.lisp
3849 ** host-disassem.lisp -> disassem.lisp
3850 ** host-insts.lisp -> insts.lisp
3851 ** byte-comp.lisp -> target-byte-comp.lisp
3852 ** host-byte-comp.lisp -> byte-comp.lisp
3853 ** host-signal.lisp -> signal.lisp
3854 ** host-defstruct.lisp -> defstruct.lisp
3855 ** late-target-type.lisp -> deftypes-for-target.lisp
3856 Furthermore, several other previously target-only files foo.lisp (e.g.
3857 hash-table.lisp and random.lisp) have been split into a target-and-host
3858 foo.lisp file and a target-only target-foo.lisp file, with their key type
3859 definitions in the target-and-host part, so that the cross-compiler will
3860 know more about target types.
3861 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3862 gone away. In their place are various *BACKEND-FOO* variables
3863 corresponding to the slots of the old structure.
3864 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3865 into the target SBCL has been fixed.
3866 * The chill.lisp system for loading cold code into a running SBCL
3868 * Support for the CMU CL "scavenger hook" extension has been removed.
3869 (It was undocumented and unused in the CMU CL sources that SBCL was
3870 derived from, and stale in sbcl-0.6.1.)
3871 * Various errors in the cross-compiler type system were detected
3872 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3873 (enabling various consistency checks). Many of them were fixed,
3874 but some hard problems remain, so the compiler is back to
3875 running without *TYPE-SYSTEM-INITIALIZED* for now.
3876 * As part of the cross-compiler type system cleanup, I implemented
3877 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3878 * I have started adding UNCROSS calls throughout the type system
3879 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3880 on cross-compiler input files will be able to go away, and various
3882 * CONSTANTP now returns true for quoted forms (as explicitly required
3885 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3887 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3888 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3889 (MAKE-LIST -1). In the longer term, it ought to become true
3890 that declarations are assertions even at SAFETY 1. For now, it's not
3891 quite true even at SAFETY 3, but it's at least more nearly true..
3892 (Note that this change seems to increases the size of the system by
3893 O(5%) and to decrease the speed of the compiler by 20% or more.)
3894 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3895 for the problem of printing dozens of lines of distracting information
3896 about low-level system machinery as part of the top stack frame
3897 on entry to the debugger when an undefined function was called.
3898 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3899 is not reset to COMMON-LISP-USER.
3900 * Compilation of stuff related to dyncount.lisp has been made conditional
3901 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3902 smaller. The various dyncount-related symbols have been moved into
3903 a new "SB-DYNCOUNT" package.
3904 * tty-inspect.lisp has been renamed to inspect.lisp.
3905 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3906 feature has gone away. (When we eventually port to other flavors of
3907 libc and/or Unix, we'll try to make the differences between flavors
3908 invisible at the user level.)
3909 * Various other *FEATURES* tags, and/or their associated conditionals,
3910 have been removed if obsolescent, or given better documentation, or
3911 sometimes given more-mnemonic names.
3913 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3915 * tidied up "make.sh" script
3916 * tidied up system directory structure
3917 * better "clean.sh" behavior
3918 * added doc/FOR-CMUCL-DEVELOPERS
3919 * many many small tweaks to output format, e.g. removing possibly-confusing
3920 trailing #\. character in DESCRIBE-INSTANCE
3921 * (EQUALP #\A 'A) no longer signals an error.
3922 * new hashing code, including EQUALP hashing
3923 * tidied up Lisp initialization and toplevel
3924 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3925 * command line argument processing
3926 * added POSIX-GETENV function to deal with Unix-ish environment variables
3927 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3928 terminating SBCL on EOF
3929 * non-verbose GC by default
3930 * There is no more "sbcl" shell script; the sbcl file is now the C
3931 runtime executable (just like CMU CL).
3932 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3934 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3935 symbol and package information as Lisp native symbol and package objects
3936 instead of strings naming symbols and strings naming packages. This way,
3937 whenever packages are renamed (as in warm init), debug information is
3938 transformed along with everything else.
3939 * tweaked the optimization policy declarations which control the building
3940 of SBCL itself. Now, among other things, the system no longer saves
3941 source location debugging information. (This helps two problems at once
3942 by reducing SBCL size and by keeping SBCL from trying to look for its
3943 sources -- which may not exist -- when reporting errors.)
3944 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3945 debugging and testing purposes
3946 * cleaned up printing, making the printer call PRINT-OBJECT for
3947 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3948 methods, giving nearly-ANSI behavior
3949 * converted almost all special variables to use *FOO* naming convention
3950 * deleted PARSE-TIME functionality, since it can be done portably
3951 * moved some files out of cold init into warm init
3952 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3954 * regularized formatting of source files
3955 * added an install.sh script
3956 * fixed ridiculous memory usage of cross-compiler by making
3957 compiler/alloc.lisp not try to do pooling unless it can hook
3958 itself into the GC of the cross-compilation host. Now the system
3959 builds nicely on my old laptop.
3960 * added :SB-ALLOC in target-features.lisp-expr
3961 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3962 was not implemented)
3963 * re-did condition handling and note reporting in the compiler. Notes
3964 are no longer handled by signalling conditions. Style warnings
3965 and warnings are handled more correctly and reported in such a way
3966 that it's easy to find one or the other in your output (so that you
3967 can e.g. figure out which of many problems caused COMPILE-FILE to
3969 * changed the severity of several compiler warnings from full WARNING
3970 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3971 compiler note reporting so that it doesn't use the condition system
3972 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3973 COMPILE-FILE command)
3974 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3975 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3976 no longer supported, since their implementation was deeply intertwingled
3977 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3978 * removed bogus "support" for compiler macros named (SETF FOO), and
3979 removed the compiler macro for SETF INFO (but only after making a fool
3980 of myself on the cmucl-imp mailing list by posting a bogus patch for
3981 DEFINE-COMPILER-MACRO..)
3982 * Compiled files containing forms which have side effects on the Lisp
3983 reader (such as DEFPACKAGE forms) are now handled more correctly.
3984 (Compiler queuing of top level lambdas has been suppressed by setting
3985 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3986 * deleted various currently-unused source files, e.g. gengc.lisp. They
3987 may be added back at some point e.g. when porting to other architectures,
3988 but until they are it's distracting to distribute them and to try to
3990 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3991 there were so many of them they're just distractions, and UNCROSS is
3992 known to be able to handle the current sources
3993 * moved PROFILE functionality into TRACE, so that it will be clear
3994 how the wrapping and unwrapping of functions when you profile them
3995 interacts with the wrapping and unwrapping of functions when you
3996 trace them. (Actually, the functionality isn't there yet, but at least
3997 the interface specification is there. Hopefully, the functionality will
3998 arrive with some future maintenance release.)
3999 * removed host-oops.lisp
4000 * changed signature of QUIT function to allow UNIX-CODE argument
4001 * fixed READ-SEQUENCE bug
4002 * tweaked verbose GC output so that it looks more like the progress
4003 output that ANSI specifies for functions like LOAD
4004 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4005 * added <http://sbcl.sourceforge.com> to the banner information printed by