1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
3 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
4 * incompatible change: External-format support for FFI calls. The
5 SB-ALIEN:C-STRING no longer implies an ASCII
6 external-format. Instead the string is subject to external-format
7 conversion. Additionally return values of type SB-ALIEN:C-STRING
8 are by default of type (SIMPLE-ARRAY CHARACTER), not
9 SIMPLE-BASE-STRING. For an alien type that behaves like the old
10 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
11 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
12 * incompatible change: SB-EXT package no longer contains the
13 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
14 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
16 * incompatible change: the single-stepper is no longer available
17 on Alpha, Mips and Sparc platforms.
18 * minor incompatible change: the direct superclasses of
19 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
20 not (STANDARD-OBJECT FUNCTION). This makes the
21 class-precedence-lists of GENERIC-FUNCTION and
22 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
24 * new feature: Add a version of evaluator that uses an interpreter instead
25 of the compiler. EVAL still uses the compiler by default, to switch it
26 to use the interpreter, set the value of the variable
27 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
28 * minor incompatible change: the single-stepper REPL has been merged
29 with the normal debugger (see the "Stepping" heading of the debugger help
30 for more details). The debugger command STEP will no longer switch
31 to the single-stepper REPL.
32 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
34 * bug fix: loading of default sysinit file works. (thanks to Leonid
36 * bug fix: better detection of circularities in the file-compiler.
37 (reported by Marco Monteiro)
38 * bug fix: the CL pathname functions now work with files that have
39 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
40 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
41 systems with Unix98 pty semantics.
42 * bug fix: ASDF-INSTALL will now work with bsd tar.
43 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
45 * bug fix: timers expiring in dead threads no longer cause a
46 type-error (reported by Paul "Nonny Mouse").
47 * bug fix: thanks to more lightweight single-stepper instrumentation,
48 code compiled with (DEBUG 3) will compile and execute significantly faster,
49 and will have more accurate type-inferencing than before
50 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
51 * bug fix: arguments to RUN-PROGRAM are escaped correctly
52 * replace dummy implementations of CL:MACHINE-INSTANCE and
53 CL:SOFTWARE-VERSION with proper version
55 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
56 * feature: implemented the READER-METHOD-CLASS and
57 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
59 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
61 * optimization: faster LOGCOUNT implementation on x86 and x86-64
62 (thanks to Lutz Euler)
63 * optimization: hashing of general arrays and vectors has been
64 improved. (reported by Any Fingerhut)
65 * enhancement: SB-INTROSPECT is now able to find definitions of
66 profiled functions. (thanks to Troels Henriksen)
67 * enhancement: compiler-macro expansion applies now to FUNCALL forms
68 as well, allowing compiler-macros for SETF-functions to expand.
69 * enhancement: step-instrumentation no longer wraps known
70 single-value functions with multiple-value context, allowing
71 better type inference.
72 * fixed bug #337: use of MAKE-METHOD in method combination now works
73 even in the presence of user-defined method classes. (reported by
74 Bruno Haible and Pascal Costanza)
75 * fixed bug #339(c): if there are applicable methods not part of any
76 long-form method-combination group, call INVALID-METHOD-ERROR.
77 (reported by Bruno Haible)
78 * fixed bug #361: the :FUNCTION initarg in the protocol for
79 initialization of methods can now be used to override
80 internally-produced optimized functions. (reported by Bruno
82 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
83 system-provided lambda expression no longer cause warnings about
84 unbound #:|pv-table| symbols.
85 * bug fix: improved the handling of type declarations and the
86 detection of violations for keyword arguments with non-constant
88 * bug fix: potentially erronous calls to PATHNAME and
89 MERGE-PATHNAMES were being flushed in some cases.
90 (reported by Richard Kreuter)
91 * bug fix: compiled calls to TYPEP were mishandling obsolete
92 instances. (reported by James Bielman and Attila Lendvai)
93 * bug fix: format strings with ~> without matching ~< no longer
94 trigger an AVER, but signal an understandable error instead.
95 (reported by Antonio Martinez)
96 * bug fix: specifying an output-file without a pathname-type for
97 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
98 of input-file instead of "fasl". (reported by Robert Dodier)
99 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
100 (reported by James Y Knight).
101 * bug fix: compiler-macros-function did not consider the environment
102 argument for shadowing by local functions.
103 * bug fix: compiler-macros expansion was inhibited by local INLINE
105 * bug fix: inline expansions of known functions were subject to
106 step-instrumentation in high debug policies, leading to problems
108 * bug fix: compiler failed to differentiate between different CONS
110 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
111 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
112 * bug fix: #368: incorrect use of expressed vs. upgraded array
114 * bug fix: #306a: more precise unions of array types.
115 * thread-safety improvements:
116 ** CONDITION-WAIT could return early on Linux, if the thread was
117 interrupted and subsequently continued with SIGCONT.
118 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
120 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
121 * added support for the ucs-2 external format. (contributed by Ivan
123 * minor incompatible change: pretty printing of objects of type
124 (cons symbol) is, in the default pprint-dispatch-table, now
125 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
127 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
128 called later in a class's lifetime, possibly as late as when the
129 first instance of the class is created. Previously,
130 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
131 class became finalizeable.
132 * fixed bug: FILE-POSITION sometimes returned inconsistent results
133 for multibyte external-format streams. (thanks to "vbzoli")
134 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
135 with :ALLOCATION :CLASS inherited from superclasses of the
137 * fixed bug: anonymous classes can now be created using the :NAME
138 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
139 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
140 * fixed bug: core-files saved with :EXECUTABLE T can again be
141 executed when SBCL_HOME isn't set. (reported by James Knight)
142 * fixed bug: toplevel LOCALLY forms with declarations could
143 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
144 * fixed bug: printing from several different threads using different
145 values of *print-case* could cause invalid output, due to
146 some internal special variables of the printer not being bound
147 thread-locally (reported by Max Mikhanosha)
148 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
149 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
150 (reported by Pascal Costanza)
151 * fixed bug: FINALIZE-INHERITANCE is called from
152 REINITIALIZE-INSTANCE on classes when the class has previously
153 been finalized, as required by AMOP.
154 * minor code generation optimizations:
155 ** better register allocation in CLOS dispatching functions
156 ** overflow detection when coercing signed bytes to fixnums on x86-64
157 ** is now implemented with one IMUL instruction instead of three shifts
158 ** more efficient bit-vector access on x86 and x86-64
159 ** more efficient access to raw structure slots on x86 and x86-64
160 * fixed some bugs revealed by Paul Dietz' test suite:
161 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
164 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
165 * feature: thread support on Solaris/x86, and experimental thread support
167 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
169 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
170 default method for SLOT-UNBOUND.
171 * minor incompatible change: prevent the user from specializing the
172 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
173 somewhat counter to the intent of the protocol, I (CSR) think, and
174 additionally it just doesn't work in SBCL as currently
175 implemented, thanks to optimizations (that are always valid for
176 the other three SLOT-VALUEish functions, but not for the setter).
177 * minor incompatible change: the :SB-LDB feature is now enabled by
178 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
179 the low-level debugger.
180 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
181 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
182 down to an SB-SYS:FD-STREAM, allowing direct communication in
183 more cases. Temporary files and pipes are still used as a fallback
185 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
186 on the non-reentrant C functions localtime(3) and gmtime(3).
187 * bug fix: global optimization policy was not visible in LOCALLY and
189 * bug fix: class objects can be used as specializers in methods.
190 (reported by Pascal Costanza)
191 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
192 with a type error. (reported by blitz_ on #lisp)
193 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
194 failed with a type error. (reported by Pascal Bourguignon)
195 * bug fix: merging pathnames against defaults with :DIRECTORY
196 starting with '(:RELATIVE :BACK) should preserve the :BACK.
197 (reported by James Y Knight)
198 * bug fix: saving large (>2GB) cores on x86-64 now works
199 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
200 constant index and a (simple-array (signed-byte 32)) array
201 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
202 error (patch by Robert J. Macomber)
203 * feature: TIME now displays the amount of run-time spent in GC
204 * bug fix: The debugger now does a better job of respecting
205 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
206 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
207 workaround for bug 403.)
208 * bug fix: floating point exception handling now works on FreeBSD
209 (thanks to NIIMI Satoshi)
210 * fixed some bugs revealed by Paul Dietz' test suite:
211 ** MISC.641: LET-conversion were not supposed to work in late
213 * improvements to the Win32/x86 port:
214 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
215 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
217 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
218 * new feature: source path information is generated for macro-expansion
219 errors for use in IDE's like Slime (thanks to Helmut Eller)
220 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
221 * bug fix: compiler does not loop forever on an invalid type in
223 * improvement: compilation of most CLOS applications is significantly
225 * optimization: added a limited bytecode compiler for simple toplevel
226 forms, speeding up compilation and FASL loading
227 * bug fix: the statistical profiler now properly distinguishes anonymous
230 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
231 * minor incompatible change: in sbcl-0.9.11 (but not earlier
232 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
233 into subclasses of the finalized class. Now user calls to
234 FINALIZE-INHERITANCE finalize just the one class, and calls by the
235 system return before any subclasses are finalized.
236 * minor incompatible change: The reader no longer ignores errors
237 regarding non-existent packages in #+ and #- feature tests.
238 * new feature: command line options --no-sysinit, --no-userinit to
239 inhibit loading the corresponding init files
240 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
241 for sending data through UDP sockets (thanks to François-René Rideau)
242 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
243 error is signalled instead (thanks to François-René Rideau)
244 * minor incompatible change: Error signalling behaviour of lexical
245 operations violating package locks has changed slightly. Refer to
246 documentation on package locks for details.
247 * enhancement: EVAL can process IF-expressions without resorting to the
249 * bug fix: Some operations involving SIN, COS, or TAN weren't being
250 constant-folded properly due to missing out-of-line functions.
251 (reported by Mika Pihlajamäki)
252 * bug fix: LISTEN sometimes returned T even in cases where no data was
253 immediately available from the stream
254 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
255 were reversed. (reported by Levente Mészáros)
256 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
257 when given a vector displaced to an adjustable array. (reported
259 * bug fix: derivation of float boundaries from numbers outside the
260 appropriate float range (reported by John Wiseman)
261 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
263 * bug fix: precomputing cache entries for generic functions with
264 some subclasses of specializers as yet invalid does not attempt to
265 fill a cache line with a negative offset. (reported by Levente
267 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
268 allow condition class objects as arguments to DOCUMENTATION and
269 (SETF DOCUMENTATION); only find and set documentation for
270 structure names for the STRUCTURE doc-type. (suggested by Gary
272 * improvements to the Win32/x86 port:
273 ** (user-homedir-pathname) and default initialization file
274 locations now know about the user's "Documents and Settings"
275 directory (thanks to Yaroslav Kavenchuk)
276 ** run-program is implemented (thanks to Mike Thomas)
277 ** sockets support (thanks to Timothy Ritchey)
278 ** better backtrace support (thanks to Alastair Bridgewater)
279 ** sb-grovel supported
280 ** asdf-install and sb-posix work somewhat
281 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
282 * improvements to the Solaris/x86 port:
283 ** works on Solaris 11/Solaris Express
284 ** floating-point exception handling support
285 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
286 * fixed some bugs revealed by Paul Dietz' test suite:
287 ** REMOVE-METHOD returns its generic function argument even when
288 the method is not one of the generic functions' methods.
289 ** objects declared as MEMBER types can be admissible arguments to
291 ** printing characters should simply be printed by the FORMAT ~:C
293 ** compiler failure when compiling functions with hairy constant
294 defaults for optional parameters.
295 ** compiler produces wrong code when MAYBE-INLINE-expanding a
296 function, which is already optimized.
298 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
299 * new platform: experimental support for SBCL x86/Darwin, including
300 MacOS X 10.4.5 on Intel.
301 * new feature: Unicode character names are now known to the system
302 (through CHAR-NAME and NAME-CHAR).
303 * new feature: the filesystem location of SBCL's core file is
304 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
305 * minor incompatible change: the contrib modules SB-POSIX and
306 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
307 this change is to make it easier to distribute
308 location-independent binaries.
309 * bug fix: as implied by AMOP, standardized classes no longer have
310 slots named by external symbols of public packages. (reported by
312 * optimization: calling functions via constant symbols -- as in
313 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
314 via the function object as in (FUNCALL #'FOO).
315 * optimization: on x86 and x86-64, the calling convention for the
316 case of dealing with an unknown number of values has been altered
317 to be friendlier to the prediction heuristics implemented,
318 particularly with reference to CALL and RET pairing. (thanks to
319 Alastair Bridgewater)
320 * optimization: on x86, the code for access to thread-local symbol
321 values and binding/unbinding of thread-local symbols is smaller.
322 (thanks to Alastair Bridgewater)
323 * enhancement: CONSTANTP is now able to determine constantness of
324 more complex forms, including calls to constant-foldable standardized
325 functions and some special forms beyond QUOTE.
326 * fixed bug: occasional GC crashes on Solaris/x86
327 * optimization: x86-64 supports stack allocation of results of simple
328 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
329 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
330 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
331 (thanks to James Knight)
332 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
333 by the standard (thanks to Stephen Compall)
335 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
336 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
337 be used for bundling the runtime and the core file into one
338 executable binary. This feature is not currently supported on all SBCL
339 platforms. (thanks to James Bielman and NIIMI Satoshi)
340 * new feature: a generational or ephemeral garbage collector is now
341 the default on the PowerPC platform (both Linux and Darwin). The
342 old Cheney (stop and copy) collector is a build-time option.
343 (thanks to Cyrus Harmon, after Raymond Toy)
344 * minor incompatible change: the method by which SBCL finds its
345 contributed modules has changed; it no longer relies on symbolic
346 links from an $SBCL_HOME/systems directory, but searches directly
347 in the subdirectories of $SBCL_HOME.
348 * enhancement: the dynamic heap size on the Linux/PPC platform is
349 markedly larger, even using the older Cheney garbage collector.
350 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
351 certain complicated string types. (reported by Gary King)
352 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
353 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
354 * fixed bug: DOCUMENTATION on structures no longer signals an
355 error if no structure type of the right name exists. (reported by
357 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
358 applicable non-standard primary or :AROUND method on
359 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
360 no longer cause unbound variable errors. (reported by Kevin Reid)
361 * fixed bug: metacircle resolution in cases where methods have slots
362 added before the slots from STANDARD-METHOD. (reported by Jean
364 * fixed bug: the Power PC assembly code for calling into lisp
365 sometimes computed its return address wrongly (depending on the
366 15th bit of the address, fixed at link time). This used to
367 manifest itself in a segmentation violation while building PCL.
368 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
369 many others over the years)
370 * fixed bug: ROOM no longer reports silly numbers for stack usage if
371 the stack pointer (treated as a signed integer) is negative.
372 (thanks to Peter van Eynde)
374 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
375 * new platform: experimental support for the Windows operating
376 system has been added. (thanks to Alastair Bridgewater)
377 * fixed several bugs in and robustified the PPC FFI (including
378 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
379 * bug fix: allow non-simple string symbol names (reported by Paul
381 * bug fix: interrupt handling on NetBSD (thanks to Richard M
383 * bug fix: saving a core corrupted callbacks on x86/x86-64
384 * bug fix: closed a loophole in metacircularity detection and
385 grounding in the PCL implementation of CLOS.
386 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
387 (reported by tomppa on #lisp)
388 * bug fix: clear the direction flag on Lisp -> C transitions, as
389 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
390 (reported by Andrej Grozin and Hendrik Maryns)
391 * optimization: major improvements to GC efficiency on GENCGC platforms
392 * optimization: faster implementation of EQUAL
393 * optimization: emit more efficient opcodes for some common
394 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
395 * optimization: several other minor code-generation improvements on x86-64
396 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
398 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
399 * minor incompatible change: (SETF CLASS-NAME) and (SETF
400 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
401 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
402 by ANSI as a generic function, and for consistency (SETF
403 GENERIC-FUNCTION-NAME) is treated likewise.
404 * fixed bug #233.b: make constraint propagation notice when a variable
405 value is changed after it is referenced but before it is used
406 * fixed bug #296: no more arbitrary behaviour from filenames with
407 odd characters as --load arguments. (reported by Adam Warner)
408 * fixed bug #390: :CHARACTER-SET pathname components now work as
409 expected. (reported by Tim Daly Jr)
410 * fixed bug #391: complicated :TYPE intersections in slot
411 definitions no longer cause an error in PCL internals.
412 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
413 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
414 returning the number of octets which would be written to the
415 file-stream. (thanks to Robert J. Macomber)
416 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
417 arguments to the internal stream functions. (thanks to David
419 * bug fix: stack exhaustion is now handled on the x86/SunOS
420 platform. (thanks to Daisuke Homma)
421 * bug fix: more accurate ROOM results on GENCGC platforms
422 * optimization: improved type inference for arithmetic-for
423 index variables in LOOP
424 * optimization: faster floating-point SQRT on x86-64
425 * fixed some bugs revealed by Paul Dietz' test suite:
426 ** DOCUMENTATION returns NIL instead of "" for method combinations
427 that don't have a docstring
429 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
430 * minor incompatible change: (SETF CLASS-NAME) and (SETF
431 GENERIC-FUNCTION-NAME) are no longer generic functions, and
432 therefore are not customizeable by user code (as seems to be at
433 least permitted and maybe required by AMOP). As a consolation,
434 however, the SBCL implementation of these functions now calls
435 REINITIALIZE-INSTANCE as specified by AMOP.
436 * bug fix: slot-definition documentation is propagated as per ANSI
437 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
438 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
439 argument, as do eslotd initialization methods. (from Pascal
440 Costanza's "Closer" project)
441 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
442 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
444 * bug fix: it is now possible to have more than one subclass of
445 STANDARD-GENERIC-FUNCTION without causing stack overflow.
446 (reported by Bruno Haible, Pascal Costanza and others)
447 * bug fix: the dependent update protocol now works for generic
448 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
450 * bug fix: condition-class instances corresponding to
451 DEFINE-CONDITION forms are now created eagerly. (reported by
452 Kalle Olavi Niemitalo on comp.lang.lisp)
453 * bug fix: floating point printing is more accurate in some
454 circumstances. (thanks to Simon Alexander)
455 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
456 merged with *DEFAULT-PATHNAME-DEFAULTS*.
457 * bug fix: callbacks on OS X now preserve stack-alignment.
458 (thanks to Cyrus Harmon)
459 * enhancement: the x86-64 disassembler is much better at
460 disassembling SSE instructions. (thanks to Lutz Euler)
461 * enhancement: CHECK-TYPE on a variable now allows type-inference
462 (thanks to Vincent Arkesteijn)
463 * optimization: improved performance of EUC-JP external format.
464 (thanks to NIIMI Satoshi)
465 * optimization: performance improvements to IO on file streams of
466 :ELEMENT-TYPE CHARACTER
467 * optimization: much faster memory allocation on x86-64
468 * optimization: faster garbage collections (latency and throughput)
470 * optimization: faster bignum subtraction and division on x86 and x86-64
471 (thanks to Lutz Euler)
472 * optimization: more accurate type-inference for loops that use a
473 floating point index variable or a negative step.
475 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
476 * bug fix: add a workaround to SBCL looping infinitely at startup on
477 Linux kernels with apparently buggy implementations of personality().
478 (thanks to Svein Ove Aas)
479 * bug fix: Unicode symbols are correctly printed in LDB backtraces
480 (thanks to David Lichteblau)
481 * bug fix: local bindings shadow global symbol macros for
482 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
483 * optimization: non-open coded uses of numeric comparison operators
484 (e.g. >) no longer cons when called with more than one parameter
485 on platforms supporting dynamic-extent allocation.
486 * enhancement: saving cores with foreign code loaded is now supported
487 on MIPS/Linux in addition to the previously supported platforms.
488 * bug fix: FIND-RESTART now tests for activity, not applicability when given
489 a restart object as identifier. (reported by Helmut Eller for CMUCL)
490 * bug fix: division by zero in sb-sprof when no samples were collected
491 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
492 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
493 (thanks to Alexander Kjeldaas)
494 * new feature: ignoring the return values of destructive functions
495 like NREVERSE signals a compile-time style-warning.
496 (thanks to Kevin Reid)
497 * new feature: the alignment of alien structure fields can be
498 explicitly specified. (thanks to Cyrus Harmon)
499 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
500 and dump core on SIGQUIT
502 ** incompatible change: threads do not inherit values of specials
503 from their parents (see manual)
504 ** bug fix: threads stacks belonging to dead threads are freed by the
505 next exiting thread, no need to gc to collect thread stacks anymore
506 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
507 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
508 ** bug fix: dynamic variable and thread start related gc lossage
509 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
511 * fixed some bugs revealed by Paul Dietz' test suite:
512 ** SUBTYPEP is slightly more accurate on heinously complicated
513 CONS types where some of the members have uncertain (in the
514 NIL, NIL sense) type relationships to each other.
516 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
517 no longer purified unless :PURIFY T is explicitly specified.
518 ** Non-purified cores are significantly smaller than before
520 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
521 * new feature: timers based on Zach Beane's excellent timer package
522 * added support for the following external formats: koi8-u,
523 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
524 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
525 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
526 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
527 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
528 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
529 * incompatible change: a threaded SBCL will no longer revert to
530 non-threaded mode on non-NPTL systems, but refuse to start entirely.
531 * bug fix: interrupts are disabled until startup is complete; no
532 more sigsegvs when receiving a signal to soon
533 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
535 * bug fix: add a workaround for the memory randomization features in
536 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
537 workaround will only be in effect on systems with the proc filesystem
539 * bug fix: printing objects of type HASH-TABLE signals a
540 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
542 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
543 have been running for over 50 days. (reported by Gilbert Baumann)
544 * bug fix: the logic for getting names of functions gets less
545 confused when confronded with alternate-metaclass
546 funcallable-instances. (reported by Cyrus Harmon)
547 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
548 consistent, even on internal alternate-metaclass objects.
549 * bug fix: flush closure information collected by physical
550 environment analysis prepass before the main pass. (bug reported
552 * bug fix: compiler pack phase does not modify a hashtable, which is
553 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
554 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
555 may be expanded. (reported by Alexander <malishev> on c.l.l)
556 * bug fix: no more style-warnings when compiling code using LAST
557 under high-SPEED low-SPACE settings. (reported by David Wallin
559 * fixed some incompatibilities between SBCL's MOP and the MOP
561 ** the METAOBJECT class is now implemented;
562 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
563 STANDARD-OBJECT, as required;
564 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
565 now compatible (as required by VALIDATE-SUPERCLASS); there
566 remains a consistency requirement over the presence or absence
567 of the FUNCTION class in the superclass list of finalized
568 classes; see the manual for more details;
569 ** the :AROUND method for COMPUTE-SLOTS on
570 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
571 requested slot ordering.
573 ** bug fix: parent thread now can be gc'ed even with a live
575 ** bug fix: binding a special with PROGV to no value is not
576 the same as that symbol not having been bound (thanks to
578 ** bug fix: binding specials is thread safe (thanks to
580 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
581 and SB-SPROF do not die with 'no handler for signal XX in
582 interrupt_handle_now(..)' anymore
583 ** bug fix: WITH-TIMEOUT works with multiple running threads
584 * fixed some bugs revealed by Paul Dietz' test suite:
585 ** ENSURE-GENERIC-FUNCTION should take a method class object for
586 the :method-class keyword argument.
588 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
589 * new port: the Solaris operating system on x86 processors is now
590 mostly supported, though some rough edges in the environment
591 remain. (thanks to Daisuke Homma)
592 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
593 space for its heap. (thanks to Thiemo Seufer)
594 * optimization: SBCL on MIPS platforms now supports dynamic-extent
595 closures. (thanks to Thiemo Seufer)
596 * minor incompatible change: eof selects abort in the debugger.
597 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
598 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
600 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
601 deprecated, and will go away in a future revision of SBCL.
602 * minor incompatible change: GC-ON and GC-OFF are no longer
603 implemented with a counter, it does not matter how many times gc
604 is switched on or off
605 * bug fix: discriminating functions for generic function classes
606 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
607 make invalid assumptions about method precedence order. (reported
609 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
610 platforms. (thanks to Thiemo Seufer)
611 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
612 * bug fix: correct pathname printing with printer escaping is on.
613 (thanks to Kevin Reid)
614 * bug fix: complex VOP definitions in "user-space" no longer trigger
615 package locks. (reported by Zach Beane)
616 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
617 for funcallable-instance functions, and is no different from
619 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
620 characters in the current readtable. (reported by Nicholas Neuss)
621 * bug fix: SUBTYPEP on various CONS types returns more a more
622 accurate acknowledgment of its certainty.
623 * optimizations: REMOVE-DUPLICATES now runs in linear time on
624 lists in some cases. This partially fixes bug 384.
625 * flush all standard streams before prompting in the REPL and the
627 * bug fix: signal handling and triggering gc do not conflict
628 directly anymore, in particular a high frequency sb-sprof does
629 not prevent gc from running
630 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
631 approximation for timezone and DST information between the
632 universal time epoch and the smallest negative 32-bit time_t.
633 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
634 year 1899 so long as the encoded time is non-negative.
635 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
636 the correct answer for non-constant rotate amounts when performing
637 an inline 32-bit rotation.
639 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
640 there is only one thread in the session
641 ** bug fix: memory leak for streams created in one thread and
642 written to in another
643 ** bug fix: lockup when compiled with gcc4
644 ** bug fix: race that allows the gc to be triggered when gc is
646 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
647 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
649 ** bug fix: finished threads are gc'ed properly
650 * fixed some bugs revealed by Paul Dietz' test suite:
651 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
652 has arguments with a different set of applicable methods from
653 the orignal arguments.
654 ** The type error thrown by MAP now has a correct expected-type
656 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
657 name a compiled function.
658 ** Three MISC tests where a large bignum was improperly coerced to
659 a float that couldn't represent that bignum during type
660 derivation were fixed.
661 ** SUBTYPEP can now handle types involving the negation of a
662 list-form FUNCTION type.
663 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
664 as (COMPLEX (AND RATIO (NOT FIXNUM))).
665 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
667 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
668 * New feature: Experimental support for bivalent streams: streams
669 opened with :element-type :default now allow character and binary
670 (unsigned-byte 8) I/O
671 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
672 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
674 * bug fix: no more highly sporadic "couldn't check whether ~S is
675 readable" when reading a stream and an interrupt hits in the middle
676 of a select system call
677 * compiler better recognizes complex arrays (reported by Eduardo
679 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
680 for variables on SBCL built with linkage-tables. (reported by Luis
682 * various error reporting improvements.
683 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
684 (Thanks to Thiemo Seufer)
685 * bug fix: nested reader invokations work correctly
686 * bug fix: it is possible to have simultaneous references to foreign
687 code and foreign data with the same name.
689 ** added x86-64 support
690 ** incompatible change: the threading api now works with thread
691 objects instead of thread ids
692 ** bug fix: threads are protected from signals and interruption when
693 starting up or going down
694 ** bug fix: a race where an exiting thread could lose its stack to gc
695 ** bug fix: don't halt on infinite error in threads if possible
696 ** fixed numerous gc deadlocks introduced in the pthread merge
697 ** bug fix: fixed thread safety issues in read and print
698 ** bug fix: debugger doesn't hang on session lock if interrupted at
699 an inappropriate moment
700 ** bug fix: run-program is now thread safe(r)
701 ** bug fix: inner with-recursive-lock no longer releases the mutex
702 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
703 * fixed some bugs revealed by Paul Dietz' test suite:
704 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
705 EXPECTED-TYPE slots filled.
706 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
708 ** MAKE-CONDITION accepts classes as type-designators.
709 ** COMPILE may never return NIL.
710 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
711 range before calling Unix time functions
713 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
714 * numerous signal handling fixes to increase stability
715 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
716 * minor incompatible change: we now correctly canonize default
717 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
718 as per the MOP, rather than the historical (INITARG INITFUNCTION
719 INITFORM). (reported by Bruno Haible)
720 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
721 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
722 for more information.
723 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
724 pathname is a directory pathname.
725 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
726 * dynamic space size on PPC has been increased to 768Mb. (thanks to
728 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
729 :METACLASS argument in addition to a class name. (reported by
730 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
731 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
732 (reported by Bruno Haible; patch from Gerd Moellmann)
733 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
735 * bug fix: more cleanups to the floating point exception handling on
736 x86-64 (thanks to James Knight)
737 * bug fix: the compiler does not try to constant fold calls of
738 COERCE and BIT-* functions when they return freshly constructed
739 objects. (reported by Nikodemus Siivola and Paul Dietz)
740 * optimization: improved the MIPS versions of generic (in the
741 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
742 * optimization: direct conversion of (unsigned-byte 32) to floats on
743 the PowerPC platform.
744 * optimization: structure instances with raw slots now use less
745 memory, and probably show better memory locality. (thanks to
747 * optimization: DYNAMIC-EXTENT declarations for lists and closures
748 are treated as requests for stack allocation on the x86-64,
749 Alpha-32, PPC and SPARC platforms.
750 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
751 the wrong file descriptor; implementation of SOCKET-OPEN-P.
752 (thanks to Tony Martinez)
754 ** gcing a dead thread can no longer lead to lockups
755 ** threads block signals until they are set up properly
756 ** errno is no longer shared by threads
757 ** interrupt-thread restores the eflags register on x86
758 ** fixed some lockups due to gc/thread interaction
759 * fixed some bugs revealed by Paul Dietz' test suite:
760 ** invalid dotted lists no longer raise a read error when
762 ** signal an error if a symbol that names a declaration is used
763 as the name of a type, or vice versa
764 ** allow using the (declare (typespec var*)) abbreviation for
765 (declare (type typespec var*)) with all type specifiers
766 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
767 ** always return NIL from PPRINT-POP when OBJECT is NIL
768 ** don't signal errors when pretty-printing malformed LABELS,
769 FLET or MACROLET forms
770 ** declarations in a DOLIST body are also in scope for the
772 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
774 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
777 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
778 * fixed cross-compiler leakages that prevented building a 32-bit
779 target with a 64-bit host compiler.
780 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
781 opened with :IF-EXISTS :OVERWRITE.
782 * fixed bug 281: error for an invalid qualifier in a short-form method
783 combination method is not signalled until the faulty method is called.
784 * bug fix: iteration variable type inferrer failed to deal with open
785 intervals. (reported by Alan Shields)
786 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
787 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
788 or more runtime options were provided to the sbcl binary.
789 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
790 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
791 * optimization: there's now a fast-path for fixnum arguments in the
792 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
793 * optimization: the code generated on x86-64 is more compact thanks
794 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
795 * bug fix: floating-point exception handling now partly works on
796 x86-64. (Thanks to James Knight)
797 * improvement to the MIPS backend from Thiemo Seufer: C-style
798 64-bit long long arguments and return values to alien functions
800 * fixed some bugs revealed by Paul Dietz' test suite:
801 ** the type-error signalled from WARN has a filled-in DATUM slot.
802 ** the type-error required when a stream is not associated with
803 a file has the stream as its datum.
804 ** type-errors on single-floats on x86-64 no longer have
805 :INVALID-OBJECT as the datum
806 ** the type-errors signalled for invalid function names now have
807 a correct expected type
808 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
809 for structures defined with a :TYPE. Documentation strings for
810 typed structures are no longer immediately discarded
811 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
812 broadcast streams and synonym streams. FILE-LENGTH now also works
813 on broadcast streams.
815 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
816 * incompatible change: the --noprogrammer option, deprecated since
817 version 0.7.5, has been removed. Please use the equivalent
818 --disable-debugger option instead.
819 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
821 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
822 inoperational for a while now) has been completely removed.
823 * null lexical environments are now printed as #<NULL-LEXENV>,
824 significantly reducing the amount of clutter in typical backtraces.
825 * documentation on weak pointers, finalization, and after GC hooks
826 has been added to the manual.
827 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
828 as other specialized array types, is much faster. SUBSEQ and
829 COPY-SEQ on such arrays have also been sped up.
830 * optimization: EQL is now more efficient when at least other argument
831 is known to be of type (OR FIXNUM (NOT NUMBER)).
832 * fixed bug: the runtime is now less vulnerable to changes in the
833 size of the SBCL object on OS X, and virtual memory is reserved for
834 all spaces that need to be at a fixed address.
835 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
836 * fixed bug: finalizers and after GC hooks that cause consing are now
838 * fixed bug: compiler error messages and summaries are now printed to
839 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
840 * fixed inference of the upper bound of an iteration variable.
841 (reported by Rajat Datta).
842 * fixed bug 211e: calling local functions with duplicated constant
843 keyword argument no longer causes a bogus style warning about an
845 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
846 ftype declaration to be disregarded. (reported by Dave Roberts)
847 * fixed bug 373: caused by erronous compilation of references to alien
848 variables in the runtime on ppc/darwin.
849 * fixed bug 376: CONJUGATE type deriver.
850 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
851 (reported by Baughn on #lisp)
852 * a cross-compiler bug on non-x86 platforms has been identified and
853 fixed. (thanks to Bruno Haible)
854 * improvements to the MIPS runtime code for increased stability.
855 (thanks to Thiemo Seufer)
856 * increased the maximimum compact environment size to allow
857 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
858 * partial workaround for bug 135: don't name the function we're
859 calling for hairy cases of EVAL, so as not to accumulate one environment
860 entry per call to EVAL. (reported by Kevin Reid)
861 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
862 * optimization: type testing for non-vector arrays should be faster.
863 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
865 * bug fix: setting 31st element of a bit vector to zero did not work
867 * bug fix: redefining a class definition which failed due to a
868 previous accessor / function clash now works (but see BUGS entry
869 #380 for more problems in this area). (thanks to Zach Beane)
870 * the long form of DEFINE-METHOD-COMBINATION disables method group
871 checking when given a single method group with pattern *. (thanks
873 * on x86 compiler supports stack allocation of results of simple
874 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
875 * support for building and running on Mac OS X 10.4 "Tiger" has been added
876 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
877 * fixed some bugs related to Unicode integration:
878 ** the restarts for recovering from input and output encoding
879 errors only appear when there is in fact such an error to
881 * fixed some bugs revealed by Paul Dietz' test suite:
882 ** MISC.549 and similar: late transformation of unsafe type
883 assertions into derived types caused unexpected code
885 ** SCALE-FLOAT type deriver is less wrong.
886 ** type derivers for EXP, LOG and similar functions compute result
887 types for complex arguments better.
888 ** (MISC.563) CONJUGATE type deriver works for very restricted
890 ** out-of-line type testers for character strings are available.
891 ** EQUAL compiler transform understands specialness of objects
893 ** accessing double-floats stored on the stack now works on x86-64.
894 ** debugger internals could sometimes create invalid lispobjs,
895 resulting in GC crashes.
896 ** MISC.548: type check weakening can convert required type into
898 ** initialization forms for bindings are not in scope of free special
901 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
902 * incompatible change: thread support for non-NPTL systems has
903 been removed - locking is buggy and unreliable. A threaded
904 SBCL build will now warn at startup and refuse to create
905 new threads, unless futex support is detected in the kernel
906 * incompatible change: the top level REPL now has only an ABORT
907 restart associated with it, not TOPLEVEL and ABORT as it used to.
908 TOP and TOPLEVEL are now available as debugger commands for
909 returning to the top level.
910 * incompatible change: forms evaluated in the REPL now use the
911 global optimization policy.
912 * incompatible change: user- and system-initialization files are
913 no longer processed with LOAD, but by READ and EVAL; hence the
914 global optimization policy, startup package, readtable, etc,
916 * The .fasl file format number has been incremented because of
917 various incompatible changes.
918 * internal entry point details and argument counts no longer appear
919 in backtraces unless explicitly requested by setting
920 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
921 * built-in and standard functions no longer have names like "top
922 level local call to FOO".
923 * fixed bug 32: functions defined in non-null lexical environments
924 now have more legible printed representation
925 * fixed bug 33: functions defined in non-null lexical environemnts
926 are now more amenable to inspection by INSPECT.
927 * workaround for bug 354: XEPs no longer appear in backtraces unless
928 explicitly requested.
929 * fixed bug: receiving the signal which results from attempting to
930 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
931 SIGBUS on other *BSDs) on architectures where the C stack is also
932 the Lisp stack (x86 and x86-64) from foreign code no longer leads
933 to debugger confusion or wild instability. (reported by Cheuksan
935 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
936 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
937 (reported by Lutz Euler)
938 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
939 compiled code. (reported by Paul Dietz)
940 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
941 specialized parameter to a method to something that is not TYPEP
942 the specializer is now possible.
943 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
944 face of package deletion.
945 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
946 pathname. (reported by David Tolpin on c.l.l)
947 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
948 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
949 STRING-STREAM and FILE-STREAM, respectively.
950 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
951 than previously; in addition, its test suite is now run on build.
952 (thanks to Luke Gorrie)
953 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
954 * optimization: added a immediate representation for single-floats
956 * fixed some bugs revealed by Paul Dietz' test suite:
957 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
958 ** attempting to create a package with a colliding nickname causes
959 correctable errors to be signalled.
960 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
961 ** several x86-64 backend bugs related to sign-extension of immediate
964 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
965 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
966 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
968 * fixed loading of multiply forward-referenced layouts.
969 (thanks to Cheuksan Wang)
970 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
971 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
972 (see COMPILE-FILE documentation for details of :PRINT option)
973 * fixed bugs 19 and 317: fixed-format floating point printing is
974 more accurate. This also fixes a bug reported by Adam Warner
975 related to the ~@F format directive.
976 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
978 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
979 dispatch table if the from-char is a dispatch macro character.
980 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
981 by the wordsize no longer ignore the last word. (reported by Lutz
983 * fixed bug in type checking of dynamic-extent variables. (reported
985 * optimization: sequence traversal functions use their freedom to
986 coerce function designators to functions.
987 * optimization: code with many calls to CLOS methods specialized on
988 CLOS classes has had redundant type checks removed.
989 * optimization: added declarations to speed up operations that access
990 the internal character database (for example STRING-UPCASE)
991 * optimization: comparison operations between floats and sufficiently small
992 fixnums no longer create extra rationals
993 * fixed some bugs related to Unicode integration:
994 ** portions of multibyte characters at the end of buffers for
995 character-based file input are correctly transferred to the
996 start of the buffer at the next read.
997 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
998 passing it through to OPEN.
999 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1000 argument given to internal calls to OPEN.
1001 ** the built-in comment readers (introduced by character sequences
1002 ";" and "#|") are more forgiving to encoding errors; they will
1003 STYLE-WARN and then attempt to resync the stream at a character
1004 boundary. (thanks to Teemu Kalvas)
1005 * fixed some bugs in the x86-64 port:
1006 ** Negative short int return values from c-calls are sign-extended
1008 ** The stack is aligned to 16-bytes for c-calls, as required by
1009 the ABI. (thanks to Cheuksan Wang)
1010 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1011 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1012 for enums. (thanks to Vincent Arkesteijn)
1013 ** Multiple small optimizations and bugfixes for floating point
1015 * fixed some bugs revealed by Paul Dietz' test suite:
1016 ** Space, Tab, Linefeed, Return and Page have the invalid
1017 secondary constituent character trait.
1018 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1020 ** WITH-INPUT-FROM-STRING should only update the index place on
1022 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1023 works more reliably.
1024 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1025 with one-dimensional arrays with fill pointers.
1026 ** TYPE-OF failed on a complex with an integer realpart and a
1028 ** compiler failure during type inference for the code of form
1029 (IF (EQL X (THE ...)) ...) (MISC.535).
1031 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1032 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1033 platform. The port supports 61-bit fixnums, large memory spaces
1034 and reloading shared object files.
1035 * enhancement: saving cores with foreign code loaded is now
1036 supported on ppc/Darwin in addition to the previously supported
1038 * enhancement: the statistical profiler now walks deeper into the
1039 call stack for more meaningful call-graphs and accrued time
1040 reports (x86/x86-64 only). It also now reports time spent in
1042 * enhancement: it is now possible to trace most individual methods
1043 of a generic function in addition to tracing the generic function
1045 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1047 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1048 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1049 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1050 produces an error. (thanks to Vincent Arkesteijn)
1051 * bug fix: NAMESTRING on pathnames with :WILD components in their
1052 directories works correctly. (thanks to Artem V. Andreev)
1053 * fixed bug 125: compiler preserves identity of closures. (reported
1055 * bug fixed: functions with &REST arguments sometimes failed with
1056 "Undefined function" when compiled with (DEBUG 3). (reported by
1058 * bug fix: overflow during compiling of setting element of a bit
1059 vector with constant index and value. (reported by Timmy Douglas)
1060 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1061 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1062 * on x86 compiler partially supports stack allocation of dynamic-extent
1064 * GO and RETURN-FROM do not check the extent of their exit points
1065 when compiled with SAFETY 0.
1066 * fixed some bugs related to Unicode integration:
1067 ** encoding and decoding errors are now much more robustly
1068 handled; it should now be possible to recover even from invalid
1069 input or output to the terminal. (thanks to Teemu Kalvas)
1070 ** provided a first cut at implementing STRING-TO-OCTETS and
1071 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1072 ** altered the SB-MD5 contributed module slightly, changing the
1073 interface just enough for it to be supportable for builds where
1074 lisp characters are not eight bits.
1075 * fixed some bugs revealed by Paul Dietz' test suite:
1076 ** the FORMATTER-generated functions for ~V[ conditionals require
1077 the correct number of arguments.
1078 ** READ-FROM-STRING returns the mandated second value when applied
1079 to displaced strings.
1080 ** the #\Rubout and #\Backspace characters are treated as invalid
1081 constituent characters by the tokenizer.
1083 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1084 * new feature: reloading changed shared object files with
1085 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1086 * new feature: references to foreign variables and functions
1087 can now be compiled and loaded before the corresponding shared
1088 object file is loaded, as long as the foreign definitions are
1089 available at runtime.
1090 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1091 supported. (thanks to Dan Debertin)
1092 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1093 just keywords. (thanks to Vincent Arkesteijn)
1094 * fixed bug #331: structure-class instances corresponding to
1095 DEFSTRUCT forms are now created eagerly.
1096 * fixed bug #345: backtraces from calls to undefined functions work
1097 on x86 as well. Related bug #61 is now also partially fixed on x86
1098 (backtraces from throws to unknown catch tags.)
1099 * bug fix: lambda-list parsing is now stricter vrt. order and number
1100 of lambda-list keywords.
1101 * bug fix: as specified by AMOP, an error is signalled if a
1102 class-option appears multiple times in a DEFCLASS form. (reported
1104 * bug fix: RANDOM can be compiled when the compiler derives the type
1105 of its numeric argument as a disjoint set of small integers.
1106 (reported by Paul Dietz)
1107 * bug fix: starting a core saved with shared objects loaded when
1108 those objects are not available no longer causes threaded SBCL to
1109 hang. (reported by Sean Ross)
1110 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1112 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1113 argument, which must always be NIL. (reported by Kalle Niemitalo)
1114 * bug fix: printing 1.0d+23 no longer results in an error.
1115 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1116 * bug fix: structure slot setters preserve evaluation order. (thanks
1118 * fixed some bugs related to Unicode integration:
1119 ** RUN-PROGRAM can allow its child to take input from a Lisp
1120 stream. (reported by Stefan Scholl)
1121 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1122 locales. (reported by Ken Causey)
1123 * fixed some bugs revealed by Paul Dietz' test suite:
1124 ** INCF, DECF and REMF evaluate their place form as specified in
1126 ** FORMATTER expands ~{ ~} iteration directives with V or #
1127 parameters correctly.
1128 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1129 consequent uses no arguments correctly.
1130 ** the system has a partial understanding of the (COMPLEX RATIO)
1132 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1135 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1136 * new feature: a build-time option (controlled by the :SB-UNICODE
1137 keyword feature, enabled by default) for building the system with
1138 support for the entire 21-bit character space defined by the
1140 * new feature: the system now has rudimentary external-format
1141 support; the primary user-visible change at this time is that
1142 characters with the high bit set (such as lower-case-e-acute) will
1143 print correctly to a terminal in a UTF-8 environment.
1144 * minor incompatible change: BASE-CHAR no longer names a class;
1145 however, CHARACTER continues to do so, as required by ANSI.
1146 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1147 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1148 has been moved to the SB-EXT package (temporarily re-exported from
1150 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1151 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1153 * fixed bug #351: better error-handlind and reporting for malformed
1155 * fixed bug #350: bignum-printing is now more memory-efficient,
1156 allowing printing of very large bignums, eg. (expt 2 10000000).
1157 (reported by Bruno Haible)
1158 * fixed bug #302: better primitive-type selection for intersection
1160 * fixed bug #308: non-graphic characters now all have names, as
1161 required. (reported by Bruno Haible)
1162 * bug fix: redefining a class with different superclasses now correctly
1163 removes it from the direct-subclasses of its previous superclasses.
1164 (reported by David Morse)
1165 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1166 new value now works. (reported by Bruno Haible)
1167 * bug fix: correct canonicalization of multiple non-standard slot
1168 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1169 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1170 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1171 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1172 now exists, an signals an error.
1173 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1174 during macroexpansion for non-iteration variables as well. (reported
1175 by Bruno Haible for CMUCL)
1176 * bug fix: Cyclic structures and unprintable objects in compiler
1177 messages no longer cause errors. (reported by Bruno Haible)
1178 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1179 and READ-FROM-STRING all now return a primary value of NIL if
1180 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1181 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1182 (reported by Bruno Haible for CMUCL)
1183 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1184 do not designate a condition. (reported by Bruno Haible for
1186 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1187 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1188 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1189 permitting resolution in favour of any of the conflicting symbols.
1190 (reported by Bruno Haible for CMUCL)
1191 * bug fix: EQUAL compiler optimizations is less aggressive on
1192 strings which can potentially compare true despite having distinct
1193 specialized array element types.
1194 * bug fix: unit enumerations can be defined without dividing by
1195 zero. (thanks to Vincent Arkesteijn)
1196 * FORMAT compile-time argument count checking has been enhanced.
1197 (report from Bruno Haible for CMUCL)
1198 * a partial workaround for the bug 262: the compiler does not try to
1199 inline-expand a local function doing RETURN-FROM from a deleted
1200 BLOCK. (thanks to Peter Denno for the bug report and to David
1201 Wragg for the simple test case)
1202 * fixed some bugs revealed by Paul Dietz' test suite:
1203 ** RENAME-PACKAGE allows all package designators as new package
1205 ** constraint propagation and lambda variable substitution are
1206 more cautious in dealing with partially deleted code.
1207 ** compiler sometimes lost reoptimization passes.
1208 ** CERROR, given a condition as condition designator, passes its
1209 remaining arguments to the continue format control without
1211 ** Case-altering FORMAT directives work correctly on non-ASCII
1213 ** The REAL type specifier handles bounds outside the floating
1214 point ranges without signalling FLOATING-POINT-OVERFLOW.
1215 ** Functions with IR1-transformations can create intercomponent
1216 references to global functions.
1217 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1219 ** FORMAT ~R treats a nil value for its first parameter correctly.
1221 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1222 * enhancement: saving cores with foreign code loaded is now
1223 supported on x86/NetBSD and sparc/Linux in addition to the previously
1224 supported platforms.
1225 * bug fix: on some platforms repeated installations caused multiple
1226 copies of HTML documentation to be installed -- should not happen
1227 any more. (reported by Stefan Scholl)
1228 * bug fix: parsing self-recursive alien record types multiple times
1229 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1230 original patch by Helmut Eller for CMUCL)
1231 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1232 (thanks to Richard Kreuter)
1233 * bug fix: defining classes whose accessors are methods on existing
1234 generic functions in other (locked) packages no longer signals
1235 bogus package lock violations. (reported by François-René Rideau)
1236 * bug fix: special variables as DEFMETHOD parameters no longer have
1237 associated bogus type declarations. (reported by David Wragg and
1239 * bug fix: read-write consistency on streams of element-type
1240 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1241 * bug fix: redefiniton of the only method of a generic function with
1242 no DEFGENERIC no longer emits a full WARNING. In addition,
1243 redefinition of generic functions with no DEFGENERIC to an
1244 incompatible lambda list now signals an error. (thanks to Zach
1246 * bug fix: DEFGENERIC now works even when there's a function of the
1247 same name in an enclosing lexical environment. (thanks to Zach
1249 * fixed compiler failure, caused by instrumenting code during
1250 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1251 * optimization: added loop analysis and improved register allocation
1252 * fixed some bugs revealed by Paul Dietz' test suite:
1253 ** POSITION on displaced vectors with non-zero displacement
1254 returns the right answer.
1255 ** (SIMPLE-STRING) is a valid type specifier for sequence
1257 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1259 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1260 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1262 ** The justification version of the FORMAT ~< directive treats
1263 non-zero minpad parameter correctly.
1265 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1266 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1267 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1268 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1269 the supported interface.
1270 * new feature: Single-stepping of code compiled with DEBUG 2 or
1271 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1272 * new feature: saving cores with foreign code loaded is now
1273 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1274 Timothy Moore's work for CMUCL)
1275 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1276 parameters to * instead of NIL if no initform is supplied.
1277 (reported by Johan Bockgaard)
1278 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1279 correctly when FUNCALL appears as the car of the form. Note:
1280 despite this FUNCALL forms are not currently subject to
1281 compiler-macro expansion. (port of Raymond Toy's fix for the
1282 same from CMUCL, reported by Johan Bockgaard)
1283 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1284 (thanks for Teemu Kalvas)
1285 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1286 case instead of terminating the iteration (thanks for Julian
1287 Squires, Sean Champ and Raymond Toy)
1288 * bug fix: incorrect expansion of defgeneric that caused a style
1289 warning. (thanks for Zach Beane)
1290 * bug fix: slot accessor effective method computation works properly
1291 for classes with multiple non-standard applicable methods on
1292 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1293 * on x86 compiler supports stack allocation of results of LIST and
1294 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1295 CMUCL implementation by Gerd Moellmann)
1296 * fixed some bugs revealed by Paul Dietz' test suite:
1297 ** FORMAT strings with both the ~<~:;~> form of the justification
1298 directive and pretty-printing directives cause an error.
1300 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1301 * incompatible change: the internal functions
1302 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1303 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1304 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1305 instead of the old functions.
1306 * new feature: on platforms where "dladdr" is available foreign
1307 function names now appear in backtraces. (based on Helmut Eller's
1309 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1310 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1312 * documentation: ASDF manual is now distributed with SBCL.
1313 * bug fix: SBCL can now load its contributed modules with REQUIRE
1314 even if the system-provided entries have been removed from
1315 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1317 * bug fix: backtraces involving undefined functions or assembly
1318 routines are more informative. (thanks to Brian Downing)
1319 * bug fix: mutually referent alien structures now work correctly.
1320 (reported by Rick Taube)
1321 * bug fix: structures defined by WITH-ALIEN can be referred to
1322 within other definitions in the same WITH-ALIEN.
1323 * bug fix: division operators (MOD, TRUNCATE and the like) with
1324 constant zero divisors and integer dividends no longer generate
1326 * bug fix: provide default methods for INPUT-STREAM-P and
1327 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1328 * bug fix: improve the detection and resolution of MOP metacycles
1329 (where effective method computation depends on the generic function
1330 having its effective method computed). (reported by Bruno Haible)
1331 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1332 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1333 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1334 * bug fix: pathnames with relative directory components can be
1335 represented relative to default pathnames.
1336 * optimization: in taking the GCD of bignums, reduce the two bignums
1337 to approximately the same size (using Euclid's algorithm) before
1338 applying the more sophisticated binary GCD. (thanks to Juho
1340 * optimization: COUNT on bitvectors now operates word-at-a-time.
1341 * optimization: ASH with a positive, but not necessarily constant,
1342 (leftwards) shift, when in a modular context, is compiled to a
1344 * fixed some bugs revealed by Paul Dietz' test suite:
1345 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1346 if the corresponding argument is NIL.
1347 ** FORMAT directives accepting a minpad parameter treat negative
1349 ** literal commas as character parameters to FORMAT directives are
1351 ** literal spaces directly after ~<Newline> directives within a
1352 format-logical-block (~:< ~@:>) do not induce :FILL-style
1353 conditional newlines.
1354 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1355 as specified: it no longer includes conditional newlines).
1356 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1358 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1359 :PER-LINE-PREFIX argument does not evaluate to a string.
1361 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1362 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1363 the manual for details; for now, package locks can be disabled by
1364 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1365 if no major problems are found then it is likely that they will be
1366 compiled in unconditionally.
1367 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1368 unsupported operators on all platforms. To load a shared library
1369 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1370 object file, link it into a shared library outside of SBCL and
1371 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1373 * bug workaround: ROOM T and the GC were not working together
1374 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1375 reporting facility aren't preserved. That reporting has been
1376 disabled, so now until and unless someone figures out how to make it
1377 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1378 * minor incompatible change: as threatened around sbcl-0.8.0, the
1379 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1380 The symbols are also exported from SB-PCL for backwards
1381 compatibility, but more so than before SB-PCL should be treated as
1382 an implementation-internal package.
1383 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1385 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1386 It is known as of this release not to work on the Alpha, however.
1387 * fixed bug #167: errors signalled due to illegal syntax in method
1388 bodies are now more legible.
1389 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1390 designators and can hence be used with TYPEP.
1391 * fixed bug #333: CHECK-TYPE now ensures that the type error
1392 signalled, if any, has the right object to be accessed by
1393 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1394 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1395 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1397 * fixed bug #334: programmatic addition of slots using specialized
1398 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1399 and :ALLOCATION :CLASS slots.
1400 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1401 float exponents. (rereported by Peter Seibel)
1402 * fixed a bug: #\Space (and other whitespace characters) are no
1403 longer considered to be macro characters in standard syntax by
1404 GET-MACRO-CHARACTER.
1405 * fixed bug: initialization of condition class metaobjects no longer
1406 causes an instance of the condition to be created. (reported by
1408 * fixed bug: it is now possible to have slots such that
1409 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1410 description is neither :INSTANCE nor :CLASS.
1411 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1412 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1413 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1414 non-standard SLOT-DEFINITION-ALLOCATION values.
1415 * fixed bugs: various race conditions handling exiting threads.
1416 CL-PPCRE's thread torture test now passes.
1417 * fixed arguably-a-bug: GC time proportional to number of threads in
1418 system even when most of them are idle
1419 * optimization: improved performance of BIT and SBIT on bit-vectors.
1420 * .fasl file incompatibility: The fasl file version number has
1421 been incremented because of changes associated with package locks.
1423 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1424 * minor incompatible change: the system no longer provides
1425 optimization hints (conditions which are TYPEP
1426 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1427 mode; these hints are still emitted when higher SPEED optimization
1429 * new contrib module: a sampling profiler (profiling by statistical
1430 sampling, rather than by instrumenting functions) is available as
1431 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1432 * the behaviour of the standard function ED is now customizeable by
1433 third parties through a hook variable: see ED's documentation
1434 string for information on the protocol.
1435 * the compiler no longer emits efficiency notes for (FUNCALL X)
1436 when the type of X is uncertain under default optimization
1438 * fixed bug 276: mutating a binding of a specialized parameter to a
1439 method to something that is not TYPEP the specializer is now
1441 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1442 exhibit the required behaviour on the x86 platform. (thanks to
1443 Peter van Eynde, Eric Marsden and Bruno Haible)
1444 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1445 even for difficult arguments. (reported by Peter Graves)
1446 * fixed bug 141a: the backquote printer now descends quoted
1448 * fixed another bug in backquote printing: no more destructive
1449 modification of the form's list structure. (reported by Brian
1451 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1452 move between its address being taken and the call to
1453 interrupt_thread, fixing a crashing race condition.
1454 * the SB-POSIX contrib implementation has been adjusted so that it
1455 no longer exhibits ridiculously poor performance when constructing
1456 instances corresponding to C structs.
1458 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1459 * minor incompatible change: the sb-grovel contrib now treats C
1460 structures as alien (in the sense of SB-ALIEN) objects rather than
1461 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1462 has implications for memory management of client code
1463 (sb-grovel-returned objects must now be manually managed) and for
1464 type safety (alien objects now have full types).
1465 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1466 used to control emission of compiler diagnostics, rather than the
1467 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1468 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1469 quality should be considered deprecated.
1470 * install.sh now installs the user manual as well
1471 * (not quite a new documentable feature, but worth considering in
1472 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1473 beginnings of a semantically meaningful condition hierarchy is
1474 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1476 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1477 designator as the defaults argument.
1478 * fixed bug: Displaced arrays whose displaced-to array has become
1479 too small now cause ARRAY-DIMENSION to signal an error, providing
1480 for safer bounds-checking. (reported by Bruno Haible)
1481 * fixed bug: DEFCLASS slot definitions with identical :READER and
1482 :WRITER names now signal a reasonable error. (reported by Thomas
1484 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1486 * fixed bug: Invalid slot specification errors now print correctly.
1487 (thanks to Zach Beane)
1488 * fixed bug 320: Shared to local slot value transfers in class
1489 redefinitions now happen corrently from superclasses as
1490 well. (reported by Bruno Haible)
1491 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1493 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1494 improper lists correctly. (reported by Bruno Haible)
1495 * fixed bug 313: source-transform for <fun-name> was erroneously
1496 applied to a call of a value of a variable with name <fun-name>.
1497 (reported by Antonio Menezes Leitao)
1498 * fixed bug 307: The obsolete instance protocol ensures that
1499 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1500 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1501 remove dead unknown-values globs from the middle of the stack.
1502 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1503 easier to resume long computations after using *BREAK-ON-SIGNALS*
1504 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1505 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1506 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1507 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1508 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1509 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1511 * fixed a (fairly theoretical) bug in string printing: if
1512 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1513 does not have array-element-type equal to the most general string
1515 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1516 function name. (thanks to Nikodemus Siivola)
1517 * fixed bug: compile-time format string checker failed on
1518 non-closed ~{. (reported by Thomas F Burdick)
1519 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1520 don't warn on legal loop code involving more than one aggregate
1521 boolean. (thanks to Nikodemus Siivola)
1522 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1523 in keyword position to MAKE-PACKAGE was not being reported as
1525 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1526 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1528 * fixed bugs 280 and 312: the checking for multiple definitions in a
1529 file is less likely to become confused by uses of inline
1531 * fixed bug: the #S reader macro performs the keyword coercion
1532 specified for slot names. (reported by Kalle Niemitalo)
1533 * fixed bug: lambda lists may contain symbols whose names start with
1534 & but are not lambda-list-keywords; their occurrence triggers a
1536 * fixed bug 321: define-method-combination argument lambda lists do
1537 not cause invalid code to be generated when &optional or &aux
1538 variables have default values. (reported by Bruno Haible)
1539 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1540 have CLOS classes; this appears also to have fixed reported
1541 instability in stack exhaustion detection.
1542 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1543 MUFFLE-WARNING when no associated restart is present is now
1545 * optimization: rearranged the expansion of various defining macros
1546 so that each expands into only one top-level form in a
1547 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1549 * optimization: used a previously little-used slot in symbols to
1550 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1552 * fixed some bugs revealed by Paul Dietz' test suite:
1553 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1555 ** Fixed an optimization bug related to inheritance of initforms
1556 from local to shared slots.
1557 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1558 ** CAST optimizer forgot to flush argument derived type.
1559 ** print/read consistency on floats is now orders of magnitude
1560 more likely. (thanks also to Bruno Haible for a similar report
1562 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1563 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1564 for objects of type REAL. Make it so.
1565 ** SXHASH is specified (infelicitously) to respect similarity,
1566 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1567 it so. (thanks to Markus Ziegler)
1568 ** on the Alpha, the compiler succeeds in compiling functions
1569 returning a known number of arguments greater than 63.
1570 ** fixed handling of invalid NIL arguments in keyword position
1572 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1574 ** provided a readably-printable representation for RANDOM-STATE
1576 ** ensured that pathnames, where they have a namestring, always
1577 print using #P"..." syntax.
1579 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1580 * Support for the forthcoming 2.0 version of the NetBSD kernel
1581 running on x86 hardware has been added. (thanks to Perry
1582 E. Metzger most immediately, and others for their past work)
1583 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1584 current release version; SBCL's OpenBSD support had been broken
1585 since about the time of OpenBSD's switch to ELF binary format.)
1586 * [placeholder for DX summary]
1587 ** user code with &REST lists declared dynamic-extent, under high
1588 speed or space and low safety and debug optimization policy.
1589 * The manual has been converted to Texinfo format and the debugger
1590 chapter from the cmucl manual has been added.
1591 * A facility has been added to extract documentation strings from
1592 sbcl and store them as Texinfo-formatted snippets for inclusion in
1593 the manual (via Texinfo's @include directive)
1594 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1595 the test case to Dave Roberts)
1596 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1597 pointers. (reported by Sean Ross)
1598 * bug fix: PROFILE output is printed nicely even for large numerical
1599 values. (thanks to Zach Beane)
1600 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1601 greater than 32 handle EOF correctly.
1602 * bug fix: on X86 an immediate argument of the IMUL instruction is
1603 correctly printed in disassembly. (thanks to Lutz Euler)
1604 * bug fix: class slots in redefined classes preserve their old
1605 values. (thanks to Bruno Haible and Nikodemus Siivola)
1606 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1607 succeeds. (reported by Marco Baringer)
1608 * fixed some bugs revealed by Paul Dietz' test suite:
1609 ** READ-SEQUENCE now works on ECHO-STREAMs.
1610 ** RATIONALIZE works more according to its specification. (thanks
1613 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1614 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1615 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1616 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1617 should matter to you only if you rebind the printer control
1618 variables and then find you want different bindings in the
1619 debugger than in the ordinary execution of your program.)
1620 * The runtime build system has been tweaked to support building
1621 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1622 assembler and linker. (thanks to Nikodemus Siivola)
1623 * Unbound, undefined, undeclared variables now trigger full
1624 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1625 more often programmer error than deliberate exploitation of undefined
1627 * optimization: the hash algorithm for strings has changed to one
1628 that is less vulnerable to spurious collisions. (thanks to Juho
1630 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1631 needless bounds checking. (thanks to Juho Snellman)
1632 * optimization: implemented multiplication as a modular
1633 (UNSIGNED-BYTE 32) operation on the PPC backend.
1634 * fixed some bugs revealed by Paul Dietz' test suite:
1635 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1637 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1638 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1639 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1641 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1643 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1645 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1646 their output stream on EOF from read.
1647 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1648 have been read to end-of-file.
1649 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1651 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1652 description of determination of which consecutive characters
1654 ** Printing the "Space" character with escaping on now yields "#\\ ",
1655 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1656 ** Reading floating-point numbers with *READ-BASE* set to a number
1657 less than 10 works correctly.
1658 ** Reading floating-point numbers with *READ-BASE* set to a number
1659 more than 10 works correctly.
1660 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1661 the readtable currently in effect.
1663 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1664 * minor incompatible change: parsing of namestrings on a physical
1665 (Unix) host has changed; numbers after the final #\. in a
1666 namestring are no longer interpreted as a version field. This is
1667 intented to be largely invisible to the user, except that the
1668 meaning of the namestring "*.*.*" has changed: it now refers to a
1669 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1670 should usually be replaced by
1671 (make-pathname :name :wild :type :wild :version :wild)
1672 with the added benefit that this is more likely to be portable.
1673 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1674 option to OPEN now signals an error if the file being opened
1675 exists; this may have an impact on existing code.
1676 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1677 signals received, on the PowerPC platforms (both Linux and
1678 Darwin). (thanks to Pierre Mai for pointing out the location of
1680 * several fixes on OS X: The system now builds and runs cleanly on
1681 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1682 (thanks to Brian Mastenbrook)
1683 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1684 second-resolution: integer multiples of 1/3600 between -24 and 24.
1685 (thanks to Vincent Arkesteijn)
1686 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1687 type when called with 1 argument; PEEK-CHAR checked type of
1688 PEEK-TYPE only after having read first character from a
1689 stream. (reported by Peter Graves)
1690 * bug fix: the garbage collector now has much better locality
1691 behaviour, and in particular no longer treats all memory as being
1692 exhausted when many small objects point to each other in a deeply
1694 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1695 recognized as being TYPEP their class.
1696 * bug fix: the PUSHNEW documentation string has been corrected.
1697 (thanks to Vincent Arkesteijn)
1698 * bug fix: defaulting of the value for the last of an atypically
1699 large number of multiple values being bound was not being
1700 performed correctly on the Alpha or PPC platforms
1701 * optimization: implemented multiplication as a modular
1702 (UNSIGNED-BYTE 32) operation on the x86 backend.
1703 * optimization: SEARCH on simple-base-strings can now be open-coded.
1704 (see also contrib/compiler-extras.lisp for inspiration for
1705 teaching the compiler about the Boyer-Moore algorithm).
1706 * value, returned by MAX (and MIN) called with several EQUALP, but
1707 not EQL, arguments now does not depend on compiler settings.
1708 * fixed some bugs revealed by Paul Dietz' test suite:
1709 ** in stack analysis liveness information is propagated from
1710 non-local entry points.
1711 ** pathwise CAST removing failed when the CAST node did not start
1713 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1714 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1716 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1717 host is already defined.
1718 ** RENAME-FILE works on streams instead of signalling an internal
1720 ** PEEK-CHAR uses the current readtable when determining whether
1721 or not a character is whitespace.
1722 ** MERGE-PATHNAMES handles the case when the pathname does not
1723 specify a name while the default-pathname specifies a version.
1724 ** Pathnames now stand a better chance of respecting print/read
1726 ** Attempting to use standardized file system operators with a
1727 pathname with invalid :DIRECTORY components signals a
1729 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1731 ** DIRECTORY on logical pathnames is more correct.
1732 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1733 signal a TYPE-ERROR if their argument is not a stream.
1734 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1735 designator argument does not designate a stream.
1736 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1737 examining the synonym.
1738 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1740 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1741 element-type larger than ([UN]SIGNED-BYTE 32).
1743 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1744 * When built with the :SB-FUTEX feature, threaded builds now take
1745 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1746 for faster/more reliable mutex and condition variable support.
1747 * Incompatible change (but one you probably shouldn't have been using
1748 anyway): the interface and code for arbitrating between multiple
1749 threads in the same user session has been redesigned.
1750 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1751 error when called without an explicit environment argument.
1752 (thanks to Nikodemus Siivola)
1753 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1754 confused about their position. (thanks to Adam Warner and Gerd
1756 * bug fix: Pretty printing backquoted forms with unquotations in the
1757 argument list position of various code constructs such as LAMBDA
1758 now works correctly. (reported by Paul Dietz)
1759 * bug fix: Pretty printing unquotations no longer loses all
1760 stream position information.
1761 * optimization: performance of string output streams is now less
1762 poor for multiple small sequence writes.
1763 * optimization: performance of CSUBTYPEP in the presence of complex
1764 expressions involving CONS and NOT many times has been improved.
1765 (reported by Paul Dietz)
1766 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1768 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1769 streams for the REPL, for the debugger, and so on. (thanks to
1771 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1772 * fixed some bugs revealed by Paul Dietz' test suite:
1773 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1774 is ignored if it is too small, rather than propagating through
1775 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1776 ** extremely complex negations of CONS types were not being
1777 sufficiently canonicalized, leading to inconsistencies in
1779 ** VALUES tranformer lost derived type.
1781 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1782 * fixed a bootstrapping bug: the build process no longer assumes
1783 that the various BOOLE-related constants have the same value in
1784 host and target lisps. (noted by Paul Dietz' test suite on an
1785 SBCL binary built from CLISP)
1786 * The system can now be dynamically linked on the MIPS platform,
1787 which enables dynamic loading of foreign code from Lisp. (thanks
1788 to Ralf Baechle for discussions on the MIPS ABI)
1789 * The system now records debugging information for its own source
1790 files in a filesystem-position-independent manner, relative to
1791 the "SYS" logical host.
1792 * fixed a compiler bug: MV-LET convertion did not check references
1793 to the "max args" entry point. (reported by Brian Downing)
1794 * tweaked disassembly notes to be less confident about proclaiming
1795 some instruction as an LRA. (thanks to Brian Downing)
1796 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1797 now each have their own history, command character, and other
1798 characteristics. (thanks to David Lichteblau)
1799 * fixed some bugs revealed by Paul Dietz' test suite:
1800 ** compiler failure in compiling LOGAND expressions including a
1802 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1803 shift greater than 32.
1804 ** FLUSH-DEST did not mark blocks for type check regeneration.
1805 ** HANDLER-CASE failed to accept declarations in handler clauses
1806 in some circumstances.
1808 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1809 * New code in contrib/sb-introspect (still probably not entirely
1810 stable yet) provides some support for smart Lisp development
1811 environments like SLIME.
1812 * The conditions signalled for errors occurring when loading .fasl
1813 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1814 in a way which should help ASDF recover gracefully.
1815 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1816 stuff has been cleaned up. If you code contrib/ stuff, this might
1817 affect you, and you can look at contrib/README, contrib/STANDARDS,
1818 and/or the 0.8.4.27 diff to check.
1819 * In full calls the compiler now does not generate checks for declared
1820 argument types for all arguments.
1821 * various threading fixes
1822 ** and some experimental patches which didn't make it into
1823 the main tree for this release, but which are shipped in
1824 contrib/experimental-thread.patch as a possible fix for some
1825 failures (deadlock, spinning...) in GC-intensive multithreaded
1827 * fixed PPC build problem (source code incompatibility of different
1828 library versions): added offsetof() hackery which attempts to divine
1829 where glibc maintainers put uc_mcontext today
1830 * fixed bug 282: compiler does not trust type assertions while passing
1831 arguments to a full call.
1832 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1833 &OPTIONAL VALUES type parameter.
1834 * fix bug 214: algorithm for noting rejected templates is now more
1835 similar to that of template seletion. (also reported by rydis on
1837 * fixed bug 141b: printing backquoted information readably and prettily
1838 inserts a space where necessary.
1839 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1840 (CHARACTER 10) are now reported as errors, rather than propagated
1841 as unknown types. (reported by piso on #lisp)
1842 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1843 with values NIL and :ERROR. (thanks to Milan Zamazal)
1844 * fixed bug 191c: CLOS now does proper keyword argument checking as
1845 described in CLHS 7.6.5 and 7.6.5.1.
1846 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1847 longer raise an error; further, using a list as a for-as-arithmetic
1848 counter now raises a meaningful error.
1849 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1850 now understood by sequence creation functions such as MAKE-SEQUENCE
1852 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1853 a STRING-INPUT-STREAM.
1854 * compiler enhancement: SIGNUM is now better able to derive the type
1856 * type declarations inside WITH-SLOTS are checked. (reported by
1858 * fixed some bugs revealed by Paul Dietz' test suite:
1859 ** incorrect optimization of TRUNCATE for a positive first
1860 argument and negative second.
1861 ** compiler failure in let-convertion during flushing dead code.
1862 ** compiler failure while deriving type of TRUNCATE on an
1863 interval, containing 0.
1864 ** ASH of a negative bignum by a negative bignum count now returns
1866 ** intersection of CONS types now canonicalizes properly, fixing
1867 inconsistencies in SUBTYPEP.
1869 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1870 * incompatible change: The --disable-debugger command line
1871 option now clobbers the debugger at a more fundamental
1872 level, by redefining #'INVOKE-DEBUGGER instead of by
1873 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1874 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1875 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1876 enter the debugger REPL and then suffer recursive errors
1877 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1878 while under the new system, BREAK in --disable-debugger mode
1879 terminates the system just as an unhandled error would.
1880 * fixed compiler performance when processing loops with a step >1;
1881 * bug fix: DOCUMENTATION now retrieves generic function
1882 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1883 support has been systematized, and now supports the methods
1884 specified by ANSI, along with a default method and a method for
1885 slot documentation. (reported by Nathan Froyd)
1886 * bug fix: effective methods associated with a generic function are
1887 no longer cached over a change of that generic function's method
1888 combination. (reported by Andreas Fuchs)
1889 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1890 names a non-existent directory. (thanks to Andreas Fuchs)
1891 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1892 the PPC platform, lead to stack corruption; this has been fixed.
1893 (reported by Rainer Joswig)
1894 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1895 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1896 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1897 arithmetic in general, is now much more reliable on the PPC
1899 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1900 platform now returns the right answer.
1901 * optimization: restored some effective method precomputation in
1902 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1903 precomputation is now tunable.
1904 * optimization: compiler-internal data structure use has been
1905 reviewed, and changes have been made that should improve the
1906 performance of the compiler by about 20%.
1907 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1908 simple-base-strings and simple-bit-vectors is improved.
1909 * optimization: the optimization of 32-bit logical and arithmetic
1910 functions introduced in version 0.8.3 on the x86 has been
1911 implemented on the mips, ppc and sparc platforms; an
1912 implementation of the same facility, but for 64-bit arithmetic,
1913 has been added for the alpha.
1914 * microoptimization: the compiler is better able to make use of the
1915 x86 LEA instruction for multiplication by constants.
1916 * bug fix: in some situations compiler did not report usage of
1917 generic arithmetic in (SPEED 3) policy.
1918 * bug 145b fix: compiler used wrong type specifier while converting
1919 MEMBER-types to numeric.
1920 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1922 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1923 index argument now works properly on the Alpha platform.
1924 * bug fix: floating point exception treatment on the Alpha platform
1926 * bug fix: FILE-POSITION works much better on string input and
1927 output streams. (thanks to Nikodemus Siivola)
1928 * bug fix: many threading/garbage collection symptoms sorted.
1929 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1930 might be pseudo-atomic.
1931 * internal change: Stopping for GC is now done with signals not
1932 ptrace. GC is now done in whichever thread wanted it, instead of
1934 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1936 * bug fix: result form in DO is not contained in the implicit
1938 * incompatible change: ICR structure is changed; the value part of
1939 CONTINUATION is now called LVAR; corresponding functions are
1940 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1941 * added type deriver for ISQRT (thanks to Robert E. Brown).
1942 * bug fix: better support for loading from the command line when an
1943 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1945 * fixed some bugs revealed by Paul Dietz' test suite:
1946 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1947 ** ROUND and FROUND now give the right answer when given very
1948 small float arguments.
1949 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1951 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1952 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1953 ** LCM should return a non-negative integer.
1954 ** PARSE-INTEGER returned the index of a terminator instead of the
1955 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1956 ** PARSE-INTEGER returned an incorrect index being applied to a
1958 ** LCM with two arguments of 0 returns 0 rather than signalling
1960 ** unsigned addition of a 32-bit constant with the high bit set no
1961 longer causes an internal compiler error on the x86.
1962 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1963 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1964 with negative last argument.
1965 ** byte specifiers with zero size and position no longer cause
1966 an error during type derivation.
1967 ** bignum multiplication on the Alpha platform now returns the
1969 * porting: The system now builds on SuSE AMD64, although it still
1970 generates a 32-bit binary.
1971 * .fasl file incompatibility: The fasl file version number has
1972 been incremented (because of the changes to internal compiler
1973 data structures referred to above).
1975 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
1976 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
1977 more accurately, on the Darwin kernel running on PowerPC hardware.
1978 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
1979 * Compiler code deletion notes now signal a condition of type
1980 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
1981 an associated MUFFLE-WARNING restart.
1982 * The compiler now performs limited argument count validation of
1983 constant format strings in FORMAT, and where appropriate in ERROR,
1984 CERROR and WARN. (thanks to Gerd Moellmann)
1985 * New ASDF-INSTALL contrib can be used for automatic download and
1986 installation of third-party Lisp code from CCLAN or other sites
1988 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
1989 which forces another thread to execute a function supplied by the
1991 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
1992 now accept and act upon their :ELEMENT-TYPE keyword argument.
1993 (reported by Martin Atzmueller, Edi Weitz)
1994 * bug fix: FILE-POSITION now accepts position designators up to
1995 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
1996 is the greater. (thanks to Patrik Nordebo)
1997 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
1998 Kalle Olavi Niemitalo)
1999 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2000 printable. (reported by Eric Marsden)
2001 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2002 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2003 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2004 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2005 (thanks to Stig Sandoe)
2006 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2007 UNREAD-CHAR now correctly includes the unread character in the
2008 target sequence. (thanks to Gerd Moellmann)
2009 * bug fix in threaded builds: the system can now be suspended and
2010 resumed by shell job control with minimal disruption.
2011 * bug fixes in times and timezones >2038AD
2012 * better handling of "where is GNU make?" problem in build scripts
2013 (thanks to Nikodemus Siivola)
2014 * new optimization: inside a named function any reference to a
2015 function with the same name is considered to be a self-reference;
2016 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2017 optimization quality.
2018 * new optimization on x86: logical functions and + now have
2019 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2020 used when the result is truncated to 32 bits.
2021 * VALUES declaration is partially enabled.
2022 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2023 * fixed some bugs revealed by Paul Dietz' test suite:
2024 ** The system now obeys the constraint imposed by
2025 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2026 types form a lattice under type intersection.
2027 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2028 ** ASSOC now ignores NIL elements in an alist.
2029 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2030 and (1+ MOST-POSITIVE-FIXNUM) answers.
2031 ** The addition of a method with invalid qualifiers to a generic
2032 function does not cause an error to be signalled immediately;
2033 a warning is signalled, and the error is generated only on
2034 calling the generic function.
2035 * changed .fasl file version number, in part to add type codes for
2036 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2037 obscure ANSI requirements
2039 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2040 * fixed bug 148: failure to inline-expand a local function left
2041 garbage, confusing the compiler.
2042 * fixed bugs 3cd: structure slot readers perform type check if the
2043 slot can have an invalid value (i.e. it is either not initialized
2044 or can be written with a less specific slot writer).
2045 * bug fix: the compiler now traps array references to elements off
2046 the end of an array; previously, the bounds checking in some
2047 circumstances could go off-by-one.
2048 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2050 * type declarations for array element types now obey the description
2051 on the CLHS page "Declaration TYPE", as per discussions on
2052 sbcl-help around 2003-05-08. This means that a declaration
2053 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2054 declaration, all references to BAR will be asserted or assumed
2055 (with THE, so dependent on compiler policy) to involve objects of
2056 type FOO. Note that no such declaration is implied in
2057 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2058 * declared types of functions from the "Conditions"
2059 chapter. (reported by Paul Dietz)
2060 * bug fix: CERROR accepts a function as its first argument.
2061 * bug fix: NTH an NTHCDR accept a bignum as index
2062 arguments. (reported by Adam Warner)
2063 * optimization: character compare routines now optimize comparing
2064 against a constant character. (reported by Gilbert Baumann)
2065 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2066 argument now works properly on the MIPS platform.
2067 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2068 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2069 declared to have a functional type, does not cause an error
2071 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2072 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2073 * fixed bug: if last continuation of a deleted block has a
2074 destination, this destination should be deleted too. (reported by
2076 * fixed a bug in the bootstrap process: the host compiler's values
2077 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2078 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2079 test case from Patrik Nordebo)
2080 * improved the ability of the disassembler on the PPC platform to
2081 provide helpful disassembly notes.
2082 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2083 the class in more cases than previously.
2084 * bug fix: FILE-POSITION now understands :START and :END for
2085 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2086 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2087 8) data. (thanks to David Lichteblau)
2088 * bug fix: it is possible to add a method to a generic function
2089 without lambda list.
2090 * bug fix: reader failed to signal END-OF-FILE inside an
2091 object representation. (reported by Nikodemus Siivola)
2092 * fixed some bugs revealed by Paul Dietz' test suite:
2093 ** LAST and [N]BUTLAST should accept a bignum.
2094 ** condition slot accessors are methods.
2095 ** (VECTOR NIL) is a subtype of STRING.
2097 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2098 * minor incompatible change: some nonsensical specialized lambda
2099 lists (used in DEFMETHOD) which were previously ignored now signal
2101 * minor incompatible change: the system is now aware of the types of
2102 variables in the COMMON-LISP package, and will signal errors for
2103 most violations of these type constraints (where previously they
2104 were silently accepted).
2105 * minor incompatible change: COMPILE-FILE now uses the freedom
2106 afforded (ANSI 3.2.2.3) to use derived function types for
2107 functions defined in the same file. This also permits the system
2108 to warn on static type mismatches and function
2109 redefinition. (Currently it does not work with high DEBUG level.)
2110 * minor incompatible change: VALUES declaration is disabled.
2111 * When issuing notes, the compiler now signals a condition of type
2112 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2113 restart for use in user handlers. It is expected that the
2114 COMPILER-NOTE condition will eventually become a condition
2115 supertype to a hierarchy of note types, which will then be
2116 handleable in a similar fashion. However, at the moment, no such
2117 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2118 but it's an implementation detail, not a classification for the
2120 * Changes in type checking closed the following bugs:
2121 ** type checking of unused values (192b, 194d, 203);
2122 ** template selection based on unsafe type assertions (192c, 236);
2123 ** type checking in branches (194bc).
2124 * A short form of VALUES type specifier has ANSI meaning (it has
2125 increased the number of situations when SBCL cannot perform type
2127 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2128 keywords or constants is permissible.
2129 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2130 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2131 classes. (thanks to Antonio Martinez)
2132 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2133 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2134 argument to a pretty-print stream. Instead, it leaves any such
2135 operations to DESCRIBE-OBJECT methods.
2136 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2138 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2139 lambda lists. (thanks to David Lichteblau)
2140 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2141 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2142 (thanks to Gerd Moellmann)
2143 * fixed bug 246: increased compilation speed of long
2144 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2146 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2148 * DEFCONSTANT now throws a condition of type
2149 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2150 constant to a non-EQL value; CONTINUE and ABORT restarts
2151 respectively change and preserve the value.
2152 * fixed bug 63: The code walker, part of the implementation of CLOS,
2153 is now better at handling symbol macros.
2154 * bug fix: There is no longer an internal implementation type named
2155 CL:LENGTH. (reported by Raymond Toy)
2156 * bug fix: In macro-like defining macros/special operators the
2157 implicit block does not enclose the lambda list.
2158 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2159 enclosed in parentheses) are not suitable as type specifiers, and
2160 their use properly signals an error now.
2161 * bug fix: An argument count mismatch for a type specifier in code
2162 being compiled no longer causes an unhandled error at compile
2163 time, but signals a compile-time warning.
2164 * fixed simple vector readable printing
2165 * bug fix: DESCRIBE takes more care over whether the class
2166 precedence list slot of a class is bound before accessing it.
2167 (reported by Markus Krummenacker)
2168 * bug fix: FORMATTER can successfully compile pretty-printer format
2169 strings which use variants of the ~* directive inside.
2170 * bug fix: SEARCH now applies its TEST predicate to the elements of
2171 the arguments in the correct order. (thanks to Wolfhard Buss)
2172 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2173 in type inference. (thanks to Robert E. Brown)
2174 * bug fix: Reading in symbols with an explicit package name of ""
2175 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2176 * fixed some bugs revealed by Paul Dietz' test suite:
2177 ** NIL is now allowed as a structure slot name.
2178 ** Arbitrary numbers, not just REALs, are allowed in certain
2179 circumstances in LOOP for-as-arithmetic clauses.
2180 ** Multiple class redefinitions before slot access no longer
2181 causes a type error.
2182 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2183 association between the name and a class.
2184 ** Generic functions with non-standard method-combination and over
2185 five methods all of which return constants no longer return NIL
2186 after the first few invocations. (thanks to Gerd Moellmann)
2187 ** CALL-NEXT-METHOD with no arguments now passes the original
2188 values of the arguments, even in the presence of assignment.
2189 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2191 ** DISASSEMBLE works with closures and funcallable instances.
2192 ** ADD-METHOD now returns the generic function, not the new method.
2193 ** FIND-METHOD signals an error if the lengths of the specializers
2194 is incompatible with the generic function, even if the ERRORP
2196 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2197 which its argument is a member.
2198 ** DEFCLASS only redefines the class named by its class-name
2199 argument if that name is the proper name of the class;
2200 otherwise, it creates a new class.
2201 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2202 of the UNBOUND-SLOT condition to the name of the slot.
2203 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2204 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2205 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2206 SLOT-MAKUNBOUND in the specified fashion.
2208 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2209 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2210 cross-compilation host. As a consequence, we can now bootstrap our
2211 way up to SBCL starting with a bare gcc toolchain and human-readable
2212 source code (first the source to CLISP, then the source to SBCL).
2213 * A contributed module containing a partial implementation of the
2214 simple-streams interface has been included. (thanks to Rudi
2216 * A contributed module implementing the RFC1321 Message Digest
2217 Algorithm, known as MD5, has been included.
2218 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2219 no longer has any effect, as the code controlled by this feature
2220 has been deleted. (As far as we know, no-one has ever built using
2221 this feature, and its semantics were confused in any case).
2222 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2223 work on conditions (as required by the ANSI specification),
2224 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2225 expected behaviour on conditions. Users should note, however,
2226 that such behaviour is not required by the ANSI specification,
2227 and so use of this behaviour may render their code unportable.
2228 * fixed some bugs revealed by Paul Dietz' test suite:
2229 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2231 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2232 ** SXHASH on condition objects no longer returns NIL.
2233 ** :ALLOCATION :CLASS slots are better treated; their values are
2234 updated on class redefinition, and initforms inherited from
2235 superclasses are applied.
2236 ** REMOVE-METHOD returns its generic function argument even when
2237 no method was removed.
2238 ** SHARED-INITIALIZE now initializes the values of the requested
2239 slots, including those with :ALLOCATION :CLASS.
2240 ** ALLOCATE-INSTANCE now works on structure classes defined via
2241 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2243 ** SLOT-EXISTS-P now works on conditions, as well as structures
2245 ** MAKE-LOAD-FORM now has the required methods on
2246 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2247 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2248 keyword, and now implements the SLOT-NAMES argument.
2249 ** methods with &OPTIONAL arguments no longer allow too many
2250 arguments to be passed in the call without error.
2251 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2252 option is consistent with the required arguments of the generic
2253 function lambda list.
2254 * bug fix: REQUIRE accepts a string designator. (Thanks to
2256 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2257 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2258 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2259 * bug fix: The compiler now checks for duplicated variables in macro
2261 * bug fix: SETQ on globals returns the correct value.
2262 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2263 not a COMPILER-ERROR (followed by some other strange error on
2264 choosing the CONTINUE restart).
2265 * bug fix: make.sh and friends are now more consistent in the way that
2266 they look for GNU "make".
2268 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2269 * experimental native threads support (on x86 Linux >=2.4 only).
2270 This is not compiled in by default: you need to add :SB-THREAD to
2271 the target features. See the "Beyond ANSI" chapter of the manual
2273 * fix for longstanding nonANSIism: The old distinction between
2274 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2275 The return value from CL:FIND-CLASS is now a CLOS class, and
2276 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2277 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2278 * An interface to the MetaObject Protocol, as described in Kiczales,
2279 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2280 MIT Press, 1991, is available from the SB-MOP package.
2281 * incompatible change: the SB-PCL package should now be considered
2282 a private implementation detail, and no longer a semi-private MOP
2284 * minor incompatible change: due to rearrangement for threads, the
2285 control stack and binding stack are now allocated at arbitrary
2286 addresses instead of being hardcoded per-port. Users affected by
2287 this probably have to be doing advanced things with shared
2288 libraries, and will know who they are.
2289 * minor incompatible change: Previously, all --eval forms used were
2290 processed with READ before any of them were processed with EVAL.
2291 Now each --eval form is processed with both READ and EVAL before
2292 the next --eval form is processed. (Thus package operations like
2293 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2294 work as the user might reasonably expect.)
2295 * minor incompatible change: *STANDARD-INPUT* is now only an
2296 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2298 * minor incompatible change: Y-OR-N-P is now character-oriented,
2299 not line oriented. Also, YES-OR-NO-P now works without errors.
2300 (thanks to Antonio Martinez)
2301 * sb-aclrepl module improvements: an integrated inspector, added
2302 repl features, and a bug fix to :trace command.
2303 * Known functions, which cannot be open coded by the backend, are
2304 considered to be able to check types of their arguments. (fixing
2305 a bug report by Nathan J. Froyd)
2306 * fixed a bug in computing method discriminating functions: It is
2307 now possible to define methods specialized on classes which have
2308 forward-referenced superclasses. (thanks to Gerd Moellmann)
2309 * fixed evaluation order in optional entries (reported by Gilbert
2311 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2312 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2313 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2314 required-by-AMOP NAME argument, as well as CLASS and
2315 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2316 * fixed bug 20: DEFMETHOD can define methods using names that are
2317 not the proper names of classes to designate class specializers.
2318 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2319 Unix file descriptors, instead of blowing up. (thanks to Antonio
2321 * Garbage collection refactoring: user-visible change is that a
2322 call to the GC function during WITHOUT-GCING will not do garbage
2323 collection until the end of the WITHOUT-GCING. If you were doing
2324 this you were probably losing anyway.
2325 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2326 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2327 TYPEP the latter but not the former.
2328 * The compiler issues a full WARNING for calls to undefined functions
2329 with names from the CL package.
2330 * MAP-INTO for a vector destination is open coded. (reported by
2331 Brian Downing on c.l.l)
2332 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2333 documentation string.
2334 * fixed some bugs revealed by Paul Dietz' test suite:
2335 ** COPY-ALIST now signals an error if its argument is a dotted
2337 ** Condition slots are now accessed more correctly in the presence
2338 of multiple initargs for a given slot.
2339 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2340 exclude restarts of the same name associated with a different
2342 ** DEFCLASS of forward-referenced classes with another
2343 forward-referenced class in the superclasses list no longer
2345 ** Condition slots are now initialized once each, not multiple
2346 times. (thanks to Gerd Moellmann)
2347 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2349 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2350 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2351 arguments contain duplicated elements.
2352 ** RESTART-CASE understands local macros.
2353 ** RESTART-CASE associates exactly its own restarts with a condition.
2354 ** ENDP in safe mode checks its argument to be of type LIST.
2355 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2356 in question is unbound.
2357 ** Optimized MAKE-INSTANCE functions no longer cause internal
2358 assertion failures in the presence of duplicate initargs.
2359 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2360 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2361 propagated even in the ctor optimized implementation of
2363 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2365 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2366 * a better implementation of SXHASH on (simple) bit vectors,
2367 measured both in execution speed and in distribution of results
2368 over the positive fixnums, has been installed. Likewise, a better
2369 implementation of EQUAL for simple bit vectors is now available.
2370 * fixed CEILING optimization for a divisor of form 2^k.
2371 * fixed bug 240 (emitting extra style warnings "using the lexical
2372 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2373 by Antonio Martinez)
2374 * fixed SXHASH, giving different results for NIL depending on type
2375 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2376 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2377 variable. (found by Rolf Wester)
2378 * SBCL does not ignore type declarations for special
2379 variables. (reported by rif on c.l.l 2003-03-05)
2380 * some bug fixes in contrib/sb-aclrepl/
2381 * fixed some bugs revealed by Paul Dietz' test suite:
2382 ** a bug in the CONS type specifier, whereby the CAR and CDR
2383 types got intertwined, has been fixed;
2384 ** the type system is now able to reason about the interaction
2385 between INTEGER and RATIO types more completely;
2386 ** APPEND, [N]REVERSE and NRECONC check that those their
2387 arguments, which must be proper lists, are really so;
2388 ** An array specialized to be unable to hold elements has been
2389 implemented, as required -- yes, really -- by ANSI;
2390 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2391 on malformed property lists;
2393 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2394 * incompatible packaging change: in line with Unix convention,
2395 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2396 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2397 * REQUIRE and PROVIDE are now optionally capable of doing something
2398 useful. See the documentation string for REQUIRE.
2399 * infrastructure for a managed SBCL contrib system: contributed
2400 modules in this release include:
2401 ** the ASDF system definition facility;
2402 ** an interface to the BSD Sockets API;
2403 ** an ACL-like convenience interface to the repl;
2404 (thanks to Kevin Rosenberg)
2405 ** an implementation of ROTATE-BYTE, with efficient implementation
2407 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2408 gives a closer approximation to the right answer than previously.
2409 (thanks to Raymond Toy)
2410 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2411 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2412 optional environment arguments, as required by ANSI.
2413 * fixed bugs in other functions taking environment objects, allowing
2414 calls with an explicit NIL environment argument to be compiled
2416 * fixed bug 228: primary return values from
2417 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2418 COMPILE or FUNCTION.
2419 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2420 :TYPE will no longer signal errors on innocuous objects.
2421 * fixed bug 231b: SETQ is better at respecting type declarations in
2422 the lexical environment.
2423 * fixed a bug in DEFCLASS: classes named by symbols with no or
2424 unprintable packages can now be defined.
2425 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2426 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2427 * fixed compiler failure related to checking types of functions.
2428 (reported by Robert E. Brown)
2429 * the compiler is now much more consistent in its error-checking
2430 treatment of bounding index arguments to sequence functions: in
2431 (SAFETY 3) code, errors will be signalled in almost all cases if
2432 invalid sequence bounding indices are passed to functions defined
2433 by ANSI to operate on sequences.
2434 * fixed a bug in the build procedure: documentation of SBCL-specific
2435 packages is now preserved and available in the final Lisp image.
2436 * lifted FDEFINITION lookup out of loops in the implementation of
2437 many list operations. (thanks to Robert E. Brown)
2438 * fixed a bug in the reader: the #n# reader macro now works for
2439 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2440 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2441 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2442 E. Brown and Tony Martinez respectively)
2443 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2444 SLOT-BOUNDP: in particular, it is now able to optimize them much
2445 better, and is now not vulnerable to having packages renamed.
2446 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2447 always called when a slot is not present in an instance. (thanks
2449 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2450 longer signal an error on unreading a character following EOF on
2451 the previous constituent stream. (thanks to Tony Martinez)
2452 * fixed some bugs revealed by Paul Dietz' test suite:
2453 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2454 not just nonnegative fixnums;
2455 ** the logical bit-array operators such as BIT-AND now accept an
2456 explicit NIL for their "opt-arg" argument (to indicate a
2457 freshly-consed result bit-array);
2458 ** ELT now signals an error on an invalid sequence index in safe
2460 ** the type system is now cleverer about negations of numeric
2461 types, and consequently understands the BIGNUM and RATIO types
2463 ** the type system is now cleverer about the interaction between
2464 INTEGER and RATIO types: while bugs still remain, many more
2465 cases are accurately computed;
2466 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2467 if it is in the last clause;
2468 ** CONSTANTLY now correctly returns a side-effect-free function in
2470 ** DECLARE is no longer treated as a special-operator; in
2471 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2472 * incremented fasl file version number due to the change in the
2473 DEFSTRUCT-SLOT-DESCRIPTION structure.
2475 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2476 * minor incompatible change: code processed by the "interpreter" or
2477 EVAL now has a compilation optimization policy of (DEBUG 2)
2478 (changed from (DEBUG 1)) to improve debuggability of interactive
2479 development, and to allow the use of the debug RETURN command in
2481 * an experimental implementation of the RETURN command for the
2482 debugger has been included. (thanks to Frederik Kuivinen)
2483 * fixed bug 62: constraints were not propagated into a loop.
2484 * fixed bug in embedded calls of SORT (reported and investigated by
2486 * fixed some bugs revealed by Paul Dietz' test suite:
2487 ** printing and reading of arrays with some dimensions having
2488 length 0 (thanks to Gerd Moellmann);
2489 ** BOA constructor with &AUX argument without a default value does
2490 not cause a type error;
2491 ** CONSTANTP now returns true for all self-evaluating objects.
2493 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2494 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2495 accessors that are related by inheritance, as specified in the
2496 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2497 Valtteri Vuorikoski)
2498 * The compiler is now able to inline functions that were defined in
2499 a complex lexical environment (e.g. inside a MACROLET).
2500 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2502 * Support for the upcoming FreeBSD-5.0 release has been included.
2503 (thanks to Dag-Erling Smorgrav)
2504 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2505 effect when it is not in a toplevel context.
2506 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2507 stand a better chance of being correct. (thanks to Gerd
2509 * fixed bug in COERCE, which now signals an error on coercing a
2510 rational to a bounded real type which excludes the expected
2512 * The compiler is now able to derive types more accurately from the
2513 COERCE and COMPILE functions.
2514 * fixed bug 223: functional binding is considered to be constant
2515 only for symbols in the CL package.
2516 * fixed bug 231: SETQ did not check the type of a variable being set
2517 (reported by Robert E. Brown)
2518 * A new optimization for MAKE-INSTANCE has been included, fixing
2519 various bugs (including relating to :ALLOCATION :CLASS slots and
2520 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2522 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2523 ** As required by ANSI, LOOP now disallows anonymous collection
2524 clauses such as COLLECT I in conjunction with aggregate boolean
2525 clauses such as THEREIS (= I 1);
2526 ** LOOP now signals an error when any variable is reused in the
2527 same loop (including the potentially useful construct analogous
2528 to WITH A = 1 WITH A = (1+ A);
2529 ** IT is only a special loop symbol within the first clause of a
2530 conditional loop clause;
2531 ** LOOP with a typed iteration variable over a hashtable now
2532 signals a type error iff it should.
2533 * fixed some other bugs revealed by Paul Dietz' test suite:
2534 ** FILE-STREAM now names the class previously known as FD-STREAM;
2535 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2536 argument) no longer signals an error;
2537 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2538 of the slot symbol, rather than using the current package
2539 ((:CONC-NAME "") continues to intern the slot's name in the
2541 * incremented fasl file version number, because of the incompatible
2542 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2543 of the new implementation of DEFINE-COMPILER-MACRO.
2545 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2546 * Support for building SBCL for MIPS platforms running in
2547 little-endian mode has now been checked in, and basic
2548 functionality on said platforms verified.
2549 * minor incompatible change: PCL now records the pathname of a file
2550 in which methods and the like are defined, rather than its
2552 * minor incompatible change: TRUENAME now considers the truename of
2553 a file naming a directory to be the pathname with :DIRECTORY
2554 component indicating that directory.
2555 * minor incompatible change: a NAMED clause in the extended form of
2556 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2557 reason for the previous behaviour is unclear.
2558 * more systematization and improvement of CLOS and MOP conformance
2559 in PCL (thanks to Gerd Moellman and Pierre Mai):
2560 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2562 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2563 primary methods with no specializers;
2564 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2566 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2567 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2568 FORWARD-REFERENCED-CLASSes; error reporting on
2569 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2571 ** SXHASH on CLOS instances now uses a slot internal to the
2572 instance to return different numbers on distinct instances,
2573 while preserving the same return value through invocations of
2575 ** DEFMETHOD signals errors when methods with longer incongruent
2576 lambda lists are added to generic functions;
2577 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2578 CLASS, as specified in AMOP;
2579 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2580 on the order returned by the primary method for classes of
2581 class STANDARD-CLASS;
2582 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2583 * fixed some bugs shown by Paul Dietz' test suite:
2584 ** DOLIST puts its body in TAGBODY;
2585 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2587 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2588 value producing form;
2589 ** if more variables are given to PROGV than values, extra
2590 variables are bound and made to have no value;
2591 ** NSUBSTITUTE on list arguments gets the right answer with
2593 ** ELT signals an error of type TYPE-ERROR when the index argument
2594 is not a valid sequence index;
2595 ** LOOP signals (at macroexpansion time) an error of type
2596 PROGRAM-ERROR when duplicate variable names are found;
2597 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2598 ** FUNCALL of special-operators now cause an error of type
2600 ** PSETQ now works as required in the presence of side-effecting
2601 symbol-macro places;
2602 ** NCONC accepts any object as its last argument;
2603 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2605 ** loop-for-as-package does not require a package to be explicitely
2607 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2609 * fixed bug 166: compiler preserves "there is a way to go"
2610 invariant when deleting code.
2611 * fixed bug 172: macro lambda lists with required arguments after
2612 &REST arguments now cause an error to be signalled. (thanks to
2614 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2615 bug. (thanks to Matthew Danish)
2616 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2618 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2619 arguments are lexically rebound. (thanks to Gerd Moellmann and
2621 * fixed bug 194: error messages are now more informative when there
2622 is no primary method applicable in a call to a generic
2623 function. (thanks to Gerd Moellmann)
2624 * fixed bug in command line argument checking (thanks to Julian
2626 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2627 (thanks to Matthew Danish)
2628 * incremented fasl file version number, because of the
2629 SXHASH-related changes in the layout of CLOS data structures
2631 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2632 * minor incompatible change: The runtime (the Unix executable named
2633 "sbcl") is now much pickier about the .core files it will load.
2634 Essentially it now requires .core files to descend from the same
2635 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2636 as the runtime does. (The intent is to prevent the crashes which
2637 can occur, and which can even be reported as mysterious failures,
2638 when people patch the sources or change the build parameters
2639 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2640 sbcl and .core files.)
2641 * fixed bug: VALUES-LIST is no longer optimized away.
2642 * fixed bug 142: The FFI conversion of C string values to Lisp
2643 string values no longer conses excessively. (thanks to Nathan
2644 Froyd porting Raymond Toy's fix to CMU CL)
2645 * began to systematize and improve MOP conformance in PCL (thanks to
2646 Nathan Froyd, Gerd Moellman and Pierre Mai):
2647 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2649 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2650 ** FINALIZE-INHERITANCE is now called on class finalization;
2651 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2652 argument precedence order.
2653 * fixed bug 202: The compiler no longer fails on functions whose
2654 derived types contradict their declared type.
2655 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2656 so it can be non-toplevel.
2657 * The fasl file version number has changed (because of the new
2658 implementation of DEFMACRO).
2659 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2660 safe code, that any length requirement by their type-specifier
2661 argument is valid. The exceptions to this are described in bug
2663 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2664 functions now check the types of their inputs as required by ANSI.
2665 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2666 introduced symbol is DECLAREd to be SPECIAL.
2667 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2668 * fixed bug: :COUNT argument to sequence functions may be negative
2669 * fixed bug: body of DO-SYMBOLS may contain declarations
2670 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2671 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2672 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2673 symbol macro only once
2674 * fixed printing of call frame when argument list is unavailable
2675 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2676 * compiler no longer signals WARNING on unknown keyword
2679 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2680 * A beta-quality port to the mips architecture running Linux,
2681 based on the old CMUCL backend, has been made. It has been tested
2682 on a big-endian kernel, and works sufficiently well to be able to
2683 rebuild itself; it has not been tested in little-endian mode.
2684 * fixed an inconsistency between gencgc.c and purify.c which made
2685 dumping/loading .core files unreliable
2686 * fixed bug 120a: The compiler now deals correctly with IFs where
2687 the consequent is the same as the alternative, instead of
2688 misderiving the return type. (thanks to Alexey Dejneka)
2689 * fixed bug 113: Logical pathnames are now dumpable (the logical
2690 host is resolved at load-time, throwing an error if it is not
2692 * fixed bug 174: FORMAT's error message is slightly clearer when a
2693 non-printing character is used in a format directive.
2694 * fixed several bugs in compiler checking of type declarations, i.e.
2695 violations of the Python "declarations are assertions" principle
2696 (thanks to Alexey Dejneka)
2697 * fixed several bugs in PCL's error checking (thanks to Gerd
2699 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2701 * fixed bug in compilation of functions as first class values
2702 (thanks to Antonio Martinez-Shotton)
2703 * The compiler's handling TYPE-ERRORs which it can prove will
2704 inevitably happen at runtime has been cleaned up and corrected
2705 in several ways. (thanks to Alexey Dejneka)
2706 * improved argument type checking for various basic arithmetic
2707 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2708 lavished on them in the past that they can be compiled in many
2709 ways in different special cases
2710 * fixed bug 181: compiler checks validity of user supplied type
2712 * cleaned up code flushing in optimization: Function calls which
2713 should signal errors for safety purposes (e.g. which ANSI says
2714 should signal errors when their arguments are of incorrect type)
2715 are no longer optimized away.
2716 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2717 * incremented fasl file version number, because changes in the
2718 implementation of sequence functions like COERCE caused
2719 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2720 in old inline expansions) to become undefined. (Actually these
2721 changes were later undone, so we might very well be binary
2722 compatible with 0.7.7 after all, but leaving the version number
2723 incremented seemed like the simplest and most conservative
2726 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2727 * An alpha-quality port to the parisc architecture running Linux,
2728 based on the old CMUCL backend, has been made. This, even more so
2729 than the other backends, should be considered still a work in
2730 progress; known problems include that the Linux kernel in 64-bit
2731 mode does not propagate the correct sigcontext structure to
2732 userspace, and consequently SBCL on a parisc64 kernel will not
2734 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2735 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2736 suppressed.) Also now that the compiler is looking at declarations
2737 in the environment, it checks optimization declarations as well,
2738 and suppresses inlining when (> DEBUG SPEED).
2739 * More fixes have been made to treatment of floating point exception
2740 treatment and other Unix signals. In particular, floating point
2741 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2742 * The detection and handling of control stack exhaustion (infinite
2743 or very deeply nested recursion) has changed. Stack exhaustion
2744 detection is now done by write-protecting pages at the OS level
2745 and applies at all optimization settings; when found, a
2746 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2747 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2748 be caught using IGNORE-ERRORS.
2749 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2750 correctly when transforming recursive LABELS functions to LETs.
2751 (thanks to Alexey Dejneka)
2752 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2753 that are names of constants or global variables.
2754 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2755 alien routines with docstrings.
2756 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2757 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2759 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2760 (thanks to Eric Marsden)
2761 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2762 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2763 * Bug fix: The SPARC backend can now compile functions involving
2764 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2765 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2766 to a functions expecting a PATHNAME-DESIGNATOR.
2767 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2768 lambda lists. (thanks to Alexey Dejneka)
2769 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2770 functions so that EXPORTing the name of the class doesn't cause
2771 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2772 to Antonio Martinez for reporting this)
2773 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2774 constant-folded without failing an assertion. (thanks to Einar
2775 Floystad Dorum for reporting this)
2776 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2777 types are now dealt with more correctly by the compiler.
2778 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2779 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2780 behaviour analogous to RENAME-FILE. This puts its behaviour more
2781 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2783 * The fasl file version number has changed again. (because of the
2784 bug fix involving the names of PCL MAKE-INSTANCE functions)
2786 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2787 * bug fix: Floating point exceptions are treated much more
2788 consistently on the x86/Linux and PPC/Linux platforms.
2789 * Array initialization with :INITIAL-ELEMENT is now much faster for
2790 cases when the compiler cannot open code the array creation, but
2791 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2792 array accesses have also seen a speed increase.
2793 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2794 specified. (This was at the root of some bad interactions between
2795 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2797 * bug fix: Internal error arguments for undefined functions are now
2798 computed correctly on the PPC/Linux platform.
2799 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2800 Raymond Toy's patch for CMU CL)
2801 * Support for the Solaris 9 operating environment has been included
2802 (thanks to Daniel Merritt)
2803 * A very ugly but hopefully complete draft of the missing FFI chapter
2804 of the manual has been created by reformatting the corresponding
2805 CMU CL manual chapter into (currently very ugly and incoherent)
2806 DocBook and bringing it up to date for SBCL behavior. Thus, the
2807 manual is now essentially complete, at least by my extreme
2808 once-and-only-once standards, whereby it's acceptable to refer to
2809 the doc strings of SB-EXT functions as the primary documentation.
2810 * The fasl file version number has changed again, due to cleanup of
2811 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2812 is no longer a static symbol.)
2814 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2815 * SBCL now builds with OpenMCL (version 0.12) as the
2816 cross-compilation host; also, more progress has been made toward
2817 bootstrapping under CLISP.
2818 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2820 * bug 158 fixed: The compiler can now deal with integer loop
2821 increments different from 1; fixing this turned out also to fix
2823 * bug 169 fixed: no more bogus warnings about using lexical bindings
2824 despite the presence of perfectly good SPECIAL declarations (thanks
2825 to David Lichteblau)
2826 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2827 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2828 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2830 * bug 180 fixed: Method combination specifications no longer ignore
2831 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2832 * bug fix: Structure type predicate functions now check their argument
2833 count as they should.
2834 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2835 correctly. (thanks to Pierre Mai)
2836 * minor incompatible change: The --noprogrammer option is deprecated
2837 in favor of the new --disable-debugger option, which is very similar.
2838 (The major difference is that it takes effect at a slightly different
2839 time at startup, causing handling of errors in --sysinit and
2840 --userinit files will be affected differently.) The
2841 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2842 been added to allow this functionality to be controlled from ordinary
2843 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2844 maintainers, who might want to run non-interactive scripts to
2845 build SBCL cores which will later be used interactively.)
2846 * minor incompatible change: The LOAD function no longer, when given
2847 a wild pathname to load, loads all files matching that pathname.
2848 Instead, an error of type FILE-ERROR is signalled.
2850 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2851 * bug 147 fixed: The compiler preserves its block link/count
2852 invariants more correctly now so that it doesn't crash. (thanks
2854 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2856 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2857 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2858 no-value-for-this-character as NIL (as specified by ANSI).
2859 * HOST-NAMESTRING on physical pathnames now returns a string that is
2860 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2861 (thanks to Christophe Rhodes)
2862 * The Alpha port handles icache flushing more correctly. (thanks to
2864 * More progress has been made toward bootstrapping under CLISP. (thanks
2865 to Christophe Rhodes)
2866 * The fasl file format has changed again, because dynamic loading
2867 on OpenBSD (which has non-ELF object files) motivated some cleanups
2868 in the way that foreign symbols are transformed and passed around.
2869 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2870 is no longer treated as whitespace by the reader, but instead as
2871 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2872 |A
\7fB|, instead of A as it used to.
2874 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2875 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2876 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2877 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2878 this as of 0.7.1.45, but was left out of the previous news section
2879 (thanks to Dan Barlow)
2880 * SBCL now runs on the Solaris operating system on SPARC architectures
2881 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2882 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2883 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2884 * SPARC backend cleanups, allowing builds of cores optimized for V8
2885 and V9 SPARCS, and also emission of code targeted to a particular
2886 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2888 * SBCL is closer to bootstrapping under CLISP, thanks to various
2889 fixes by Christophe Rhodes.
2890 * The fasl file format has changed again, to allow the compiler's
2891 INFO database to support symbol macros.
2892 * The user manual (in doc/) is formatted into HTML more nicely.
2893 (thanks to coreythomas)
2894 * The system is smarter about SUBTYPEP relationships, especially
2895 those involving NOT types (including types such as ATOM which are
2896 represented internally using NOT types). Thus SUBTYPEP is less
2897 likely to return (VALUES NIL NIL) in general, and in particular
2898 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2900 * The fasl file format has changed again, because the internal
2901 representation of types now includes a new slot to support the new
2902 SUBTYPEP-of-NOT-types logic.
2903 * (not a change in the main branch of SBCL, but a related prototype
2904 which can hopefully be merged into the main branch of SBCL in the
2905 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2906 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2907 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2908 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2909 dispatch macro character combinations. (thanks to Alexey Dejneka)
2910 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2911 that superficially look like logical namestrings correctly.
2912 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2914 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2915 default supplied-p) for &optional and &key arguments. (thanks to
2918 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2919 * incompatible change: The compiler is now less aggressive about
2920 tail call optimization, doing it only when (> SPACE DEBUG) or
2921 (> SPEED DEBUG). (This is an incompatible change because there are
2922 programs which relied on the old CMU-CL-style behavior to optimize
2923 away their unbounded recursion which will now die of stack overflow.)
2924 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2925 for non-GENCGC systems has been increased to 20M (since that
2926 seems much closer to the likely performance optimum for modern
2927 systems than the old 4M value was)
2928 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2929 and *DEBUG-PRINT-LEVEL*
2930 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2931 of CMU CL's support for SPARC, and various endianness and other
2932 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2933 * new syntactic sugar for the Unix command line: --load foo.bar is now
2934 an alternate notation for --eval '(load "foo.bar")'.
2936 ** The system now detects stack overflow and handles it gracefully,
2937 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2938 optimization settings. (This is a good thing in general, and
2939 its introduction in this version should be particularly timely
2940 for anyone whose code fails because of suppression of tail
2942 ** The system now hunts for the C variable "environ" in a more
2943 devious way, to avoid segfaults when the C library version differs
2944 between compile time and run time. (thanks to Christophe Rhodes)
2945 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2946 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2947 ** The compiler no longer issues bogus style warnings for undefined
2948 classes in the same source file as the DEFCLASSes which defined
2949 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2951 ** fixes in CONDITION class precedence list for undefined function
2952 errors (thanks to Alexei Dejneka)
2953 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2954 correctly. (thanks to Dan Barlow)
2955 ** portability fixes aiming at bootstrapping under CLISP (thanks
2956 to Dave McDonald and Christophe Rhodes)
2957 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2958 ** fixes in type translation and and type inference (thanks to
2960 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2961 ** various fixes in the new ports (thanks to Dan Barlow)
2962 * several changes related to debugging:
2963 ** suppression of tail recursion, as noted above
2964 ** stack overflow detection, as noted above
2965 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2966 is now the default. (For some time encapsulation has been more
2967 reliable than the breakpoint-based :ENCAPSULATE NIL
2968 implementation, at least on X86 systems; and I just noticed that
2969 encapsulation also seems closer to the spirit of the ANSI
2972 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
2974 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
2975 up properly again. (There was a packaging bug in 0.7.0 which
2976 left their definitions in SB-SYS::LOAD-FOREIGN and
2977 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
2978 vital for most things which interface to C-level interfaces,
2979 like extensions working with sockets or databases or
2980 Perl-compatible regexes or whatever, and the need to fix
2981 this bug is the main reason that 0.7.1 was released so
2983 ** DEFGENERIC is now choosier about the methods it redefines, so that
2984 reLOADing a previously-LOADed file containing DEFGENERICs does
2985 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
2986 cycle now works as it should. (thanks to Alexey Dejneka)
2987 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
2988 fixed by Christophe Rhodes. (He actually submitted this patch
2989 months ago, and I delayed until after 0.7.0.)
2990 ** Bug 111 (internal compiler confusion about runtime checks on
2991 FUNCTION types) was fixed by Alexey Dejneka.
2992 * Some internal cleanups (getting rid of variables which aren't
2993 needed now that the byte interpreter is gone) caused the fasl
2994 file format number to change again.
2996 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
2997 * major incompatible change: The default fasl file extension, i.e. the
2998 default extension for files produced by COMPILE-FILE, has changed
2999 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3001 ** There are many changes in the implementation of the compiler.
3002 SBCL is now essentially a compiler-only implementation of ANSI
3003 Common Lisp. EVAL still "interprets" a few special cases, but
3004 almost all the interesting cases are handled by creating
3005 a LAMBDA expression, calling COMPILE on it, then calling
3006 FUNCALL on the result.
3007 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3008 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3009 Since the code is newer, there might still be some new bugs
3010 (though not as many as before Martin Atzmueller's fixes:-). But
3011 the new code is substantially simpler and clearer, and hopefully
3012 any remaining bugs will be simpler, less fundamental, and more
3013 fixable then the bugs in the old code.
3014 ** The revised compiler is still a little unsteady on its feet.
3016 *** The debugging information it produces (particularly the names
3017 of FUNCTION objects) is sometimes much less useful than what
3018 the old compiler produced.
3019 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3020 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3021 within a MACROLET) has been temporarily weakened.
3022 ** There are new compiler optimizations for various functions:
3023 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3024 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3025 *** the math functions TRUNCATE, FLOOR, and CEILING
3026 *** the function-of-all-trades COERCE
3027 Mostly these should be transparent, but there's one
3028 potentially-annoying problem (bug 117): when the compiler
3029 inline-expands a function and does type analysis on the result,
3030 it can create control paths which have type mismatches, and
3031 when it can't prove that those control paths aren't taken,
3032 it will issue WARNINGs about the type mismatches. This is
3033 a particular problem in practice for the new sequence functions.
3034 It's not clear how this should be fixed, and for now, a
3035 workaround is given in the entry for 117 in the BUGS file.
3036 ** (Because of the interaction between the two previous items --
3037 occasional inlining problems and new inline expansions -- some
3038 of the new sequence function optimizations won't really kick in
3039 completely until debugging information, and then inlining, are
3040 straightened out in some future version.)
3041 * minor incompatible changes:
3042 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3043 DIRECTORY no longer implicitly promotes NIL slots of its
3044 pathname argument to :WILD. In particular, when you ask for the
3045 contents of a directory (which you used to be able to do without
3046 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3047 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3048 ** changes in behavior that ANSI explicitly defines to be
3049 implementation dependent:
3050 *** The new compiler-only implementation still conforms with ANSI,
3051 but acts a little different than before. Besides the obvious
3052 changes in performance tradeoffs (that the cost per form passed
3053 to EVAL has gone up, and the cost per form executed by EVAL
3054 has gone down), the behavior of the system changes a little
3055 because there are no longer any interpreted function objects.
3056 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3057 e.g. doing COMPILE on the output of interactive DEFUN is
3059 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3061 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3062 has changed from (:CL) to NIL.
3063 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3064 e.g. #\Newline and #\Tab, don't have names specified in the
3065 ANSI Common Lisp standard, is now based on their ASCII symbolic
3066 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3067 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3068 are no longer used for output.
3069 ** changes in internal implementation constants:
3070 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3071 4 million. (If your application spends a lot of time GCing and
3072 you have a lot of RAM, you might want to experiment with
3073 increasing it even more.)
3074 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3075 However, almost all old code should still continue to work without
3076 immediate update, as SB-C-CALL is now a (deprecated) nickname
3078 ** Old operator names in the style DEF-FOO are now deprecated in
3079 favor of new corresponding names DEFINE-FOO, for consistency with
3080 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3081 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3082 internal symbols, but a few supported extensions like
3083 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3084 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3085 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3086 etc. as you get deeper into recursive calls to the debugger
3087 command loop, instead of the old "5]", "5]]", "5]]]"
3088 sequence. (I was motivated to do this when squabbles between
3089 ILISP and SBCL left me very deeply nested in the debugger. In the
3090 short term, this change will probably provoke more ILISP/SBCL
3091 squabbles, but hopefully it will be an improvement in the long run.)
3092 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3093 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3094 function, since declaiming return types involving aliens is
3095 (1) annoyingly messy to do by hand and (2) vital to efficient
3096 compilation of code which calls such functions.
3097 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3098 longer reexported by the SB-EXT package. They're solely useful
3099 for alien code, so it seems more logical that you should get
3100 them from the SB-ALIEN package, not in SB-EXT.
3101 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3102 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3103 features. Instead, the code that they used to control is always
3104 built into the system.
3105 * many other bug fixes
3106 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3107 advantage of the new EVAL-WHEN stuff and to clean them up in
3108 general, and they are now more ANSI-compliant in a number of
3109 ways. Martin Atzmueller is responsible for a lot of this.
3110 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3112 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3113 *** correct ERROR type for various file operations
3114 *** some fixes for Lisp streams
3115 *** DEFMETHOD syntax checking
3116 *** changing old weird representation of debug information as
3117 strings (which, among their other deficiencies, don't transform
3118 correctly when you rename packages, and don't change their
3119 print representation when you change things like *PACKAGE*
3120 and *PRINT-LENGTH*) to symbols and lists of symbols
3121 He also made several improvements and fixed several bugs in DESCRIBE.
3122 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3124 *** misbehavior of WRITE-STRING/WRITE-LINE
3125 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3126 and several other LOOP problems as well
3127 *** DIRECTORY when similar filenames are present
3128 *** DEFGENERIC with :METHOD options
3129 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3130 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3131 *** argument ordering in FIND with :TEST option
3132 *** mishandled package designator argument in APROPOS-LIST
3133 *** various problems in the backquote readmacro
3134 *** a bug in APROPOS
3135 *** probably some others that I'm not describing very well here,
3136 since the CVS log documents them by reference to sbcl-devel
3137 messages, and the SourceForge archives aren't working well.:-(
3138 ** Dan Barlow improved the Alpha port (and is making progress on the
3139 PPC port, for those of you who think different).
3140 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3141 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3142 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3143 continues to work on the SPARC port (for those of you in a position
3144 to look down upon our little PC-compatible boxes from a great height).
3145 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3146 and uses that copy, rather than the current dynamic value, when
3147 it's trying to decide whether to truncate output. Thus e.g.
3148 (let ((*print-lines* 50))
3149 (pprint-logical-block (stream nil)
3151 (let ((*print-lines* 8))
3152 (print (aref possiblybigthings i) stream)))))
3153 should now truncate the logical block only at 50 lines, instead of
3154 often truncating it at 8 lines, as it did before.
3155 * The doc/cmucl/ directory, containing old CMU CL documentation
3156 from the time of the fork, is no longer part of the base system.
3157 SourceForge has shut down its anonymous FTP service, and with it
3158 my original plan for distributing the old CMU CL documentation
3159 there. For now, if you need these files you can download an old
3160 SBCL source release and extract them from it.
3161 * The fasl file version number changed again, for dozens of reasons,
3162 some of which are apparent above.
3164 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3165 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3166 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3167 patch, so that DISASSEMBLE output is much nicer.
3168 * The code in the SB-PROFILE package now seems reasonably stable.
3169 I still haven't decided what the final interface should look like
3170 (I'd like PROFILE to interact cleanly with TRACE, since both
3171 facilities use function encapsulation) but if you have a need
3172 for profiling now, you can probably use it successfully with
3173 the current CMU-CL-style interface.
3174 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3175 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3176 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3177 link now returns the dangling link itself, and for similar
3178 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3179 link itself. (In these cases the old code signalled an error and
3180 looped endlessly, respectively.) Thus, DIRECTORY now works even
3181 in the presence of dangling and cyclic symbolic links.
3182 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3183 is now a supported extension again, since the consensus on
3184 sbcl-devel was that it can be useful for ordinary development
3185 work, not just for debugging SBCL itself.
3186 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3187 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3188 that currently-defined functions might be redefined later with
3189 different return types.
3190 * Hash tables can be printed readably, as inspired by CMU CL code
3191 of Eric Marsden and SBCL code of Martin Atzmueller.
3192 * better error handling in CLOS method combination, thanks to
3193 Martin Atzmueller porting Pierre Mai's CMU CL patches
3194 * more overflow fixes for >16Mbyte I/O buffers
3195 * A bug in READ has been fixed, so that now a single Ctrl-D
3196 character suffices to cause end-of-file on character streams.
3197 In particular, now you only need one Ctrl-D at the command
3198 line (not two) to exit SBCL.
3199 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3201 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3202 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3203 does the right thing.
3204 * The implementation of some type tests, especially for CONDITION
3205 types, is now tidier and maybe faster, due to CMU CL code
3206 originally by Douglas Crosher, ported by Martin Atzmueller.
3207 * Some math functions have been fixed, and there are new
3208 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3209 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3210 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3211 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3212 likely to be built into sbcl-0.7.0.)
3213 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3214 CL, ported to SBCL by Martin Atzmueller)
3215 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3216 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3217 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3218 * There's a new slam.sh hack to shorten the edit/compile/debug
3219 cycle for low-level changes to SBCL itself, and a new
3220 :SB-AFTER-XC-CORE target feature to control the generation of
3221 the after-xc.core file needed by slam.sh.
3222 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3223 COMPILE-FILE is no longer supported, so that now every function
3224 gets an entry point, so that block compilation looks a little
3225 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3226 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3227 returns the number of bytes consed since the system started,
3228 rather than the number consed since the first time the function
3229 was called. (The new definition parallels ANSI functions like
3230 CL:GET-INTERNAL-RUN-TIME.)
3231 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3232 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3233 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3234 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3235 * Fasl file version numbers are now independent of the target CPU,
3236 since historically most system changes which required version
3237 number changes have affected all CPUs equally. Similarly,
3238 the byte fasl file version is now equal to the ordinary
3241 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3242 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3243 is no longer recognized. I apologize for this, because it was
3244 listed in SB-EXT as a supported extension, but I found that
3245 its existing behavior was poorly specified, as well as incorrectly
3246 specified, and it looked like too much of a mess to straighten it
3247 out. I have enough on my hands trying to get ANSI stuff to work..
3248 * many patches ported from CMU CL by Martin Atzmueller, with
3249 half a dozen bug fixes in pretty-printing and the debugger, and
3250 half a dozen others elsewhere
3251 * fixed bug 13: Floating point infinities are now supported again.
3252 They might still be a little bit flaky, but thanks to bug reports
3253 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3254 as flaky as they were.
3255 * The --noprogrammer command line option is now supported. (Its
3256 behavior is slightly different in detail from what the old man
3257 page claimed it would do, but it's still appropriate under the
3258 same circumstances that the man page talks about.)
3259 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3260 are now supported, and enabled by default. Thus, the compiler can
3261 handle many floating point and complex operations much less
3262 inefficiently. (Thus e.g. you can implement a complex FFT
3264 * The compiler now detects type mismatches between DECLAIM FTYPE
3265 and DEFUN better, and implements CHECK-TYPE more correctly, and
3266 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3267 thanks to patches from Martin Atzmueller.
3268 * various fixes to make the cross-compiler more portable to
3269 ANSI-conforming-but-different cross-compilation hosts (notably
3270 Lispworks for Windows, following bug reports from Arthur Lemmens)
3271 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3272 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3273 fixed thanks to Pierre Mai's CMU CL patches.
3274 * fixes to keep the system from overflowing internal counters when
3275 it tries to use i/o buffers larger than 16M bytes
3276 * fixed bug 45a: Various internal functions required to support
3277 complex special functions have been merged from CMU CL sources.
3278 (When I was first setting up SBCL, I misunderstood a compile-time
3279 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3280 * improved support for type intersection and union, fixing bug 12
3281 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3282 more obscure bugs as well
3283 * some steps toward byte-compiling non-performance-critical
3284 parts of the system, courtesy of patches from Martin Atzmueller
3285 * Christophe Rhodes has made some debian packages of sbcl at
3286 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3287 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3288 stable, but are nonetheless usable. When he's ready, I'd be happy
3289 to add them to the SourceForge "File Releases" section. (And if
3290 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3291 * new fasl file format version number (because of changes in
3292 internal representation of (OR ..) types to accommodate the new
3293 support for (AND ..) types, among other things)
3295 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3296 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3298 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3300 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3301 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3302 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3303 * DESCRIBE now works on structure objects again.
3304 * Most function call argument type mismatches are now handled as
3305 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3306 know whether the function will be redefined before the call is
3307 executed. (The compiler could flag local calls with full WARNINGs,
3308 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3309 it doesn't keep track of enough information to know whether calls
3310 are local in this sense.)
3311 * Compiler output is now more verbose, with messages truncated
3312 later than before. (There should be some supported way for users
3313 to override the default verbosity, but I haven't decided how to
3314 provide it yet, so this behavior is still controlled by the internal
3315 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3316 src/compiler/ir1util.lisp.)
3317 * Fasl file format version numbers have increased again, because
3318 support for the Gray streams extension changes the layout of the
3319 system's STREAM objects.
3320 * The Gray subclassable streams extension now works, thanks to a
3321 patch from Martin Atzmueller.
3322 * The full LOAD-FOREIGN extension (not just the primitive
3323 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3324 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3325 but like most other programs, it defaults to copying the Unix
3326 environment from the original process instead of starting the
3327 new process in an empty environment.
3328 * Extensions which manipulate the Unix environment now support
3329 an :ENVIRONMENT keyword option which doesn't smash case or
3330 do other bad things. The CMU-CL-style :ENV option is retained
3331 for porting convenience.
3332 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3333 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3335 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3337 * A patch from Martin Atzmueller seems to have solved the SIGINT
3338 problem, and as far as we know, signal-handling now works cleanly.
3339 (If you find any new bugs, please report them!)
3340 * The system no longer defaults Lisp source file names to types
3341 ".l", ".cl", or ".lsp", but only to ".lisp".
3342 * The compiler no longer uses special default file extensions for
3343 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3344 seems to expect a single default extension for all compiled code,
3345 and there's no compelling reason to try to stretch the standard
3346 to allow two different extensions.) Instead, byte-compiled files
3347 default to the same extension as native-compiled files.
3348 * Fasl file format version numbers have increased again, because
3349 a rearrangement of internal implementation packages made some
3350 dumped symbols in old fasl files unreadable in new cores.
3351 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3352 many fewer weird special cases.
3353 * Bug #17 (differing COMPILE-FILE behavior between logical and
3354 physical pathnames) has been fixed, and some related misbehavior too,
3355 thanks to a patch from Martin Atzmueller.
3356 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3357 by Tim Moore, ported to SBCL by Martin Atzmueller.
3358 * Martin Atzmueller fixed several filesystem-related problems,
3359 including bug #36, in part by porting CMU CL patches, which were
3360 written in part by Paul Werkowski.
3361 * More compiler warnings in src/runtime/ are gone, thanks to
3362 more patches from Martin Atzmueller.
3363 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3366 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3368 * DESCRIBE now works on CONDITION objects.
3369 * The debugger now handles errors which arise when trying to print
3370 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3372 * The build system now uses an additional file, customize-target-features.lisp,
3373 to allow local modifications to the target *FEATURES* list. (The point of
3374 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3375 debugging features enabled, without having to worry about propagating it
3376 into everyone's system when I do a "cvs update".) When no
3377 customize-target-features.lisp file exists, the target *FEATURES* list
3378 should be constructed the same way as before.
3379 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3380 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3381 warn about behavior which is undefined under the ANSI spec. Note: This
3382 is specified by ANSI, but it's not very popular with programmers.
3383 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3384 macro in the SBCL sources for an example of a workaround which you
3385 might use to make portable ANSI-standard code which does what you want.
3386 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3387 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3388 when it's used as a non-toplevel form. (This is required in order
3389 to implement the DEFCONSTANT-EQX macro.)
3390 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3391 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3392 funny things, due to bugs in the implementation of EVAL-WHEN
3393 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3394 non-toplevel DEFCONSTANTs are uncommon.)
3395 * The core file version number and fasl file version number have been
3396 incremented, because the old noncompliant DEFCONSTANT behavior involved
3397 calling functions which no longer exist, and because I also took the
3398 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3399 * fixed bug 1 (error handling before read-eval-print loop starts), and
3400 redid debugger restarts and related debugger commands somewhat while
3402 ** The QUIT debugger command is gone, since it did something
3403 rather different than the SB-EXT:QUIT command, and since it never
3404 worked properly outside the main toplevel read/eval/print loop.
3405 Invoking the new TOPLEVEL restart provides the same functionality.
3406 ** The GO debugger command is also gone, since you can just invoke
3407 the CONTINUE restart directly instead.
3408 ** The TOP debugger command is also gone, since it's redundant with the
3409 FRAME 0 command, and since it interfered with abbreviations for the
3411 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3413 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3414 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3415 some porting work by Martin Atzmueller)
3416 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3417 with a boatload of patches which he ported to SBCL. Now that those
3419 ** The system tries to make sure that its low-priority messages
3420 are prefixed by semicolons, to help people who like to use
3421 syntax highlighting in their ILISP buffer. (This patch
3422 was originally due to Raymond Toy.)
3423 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3424 patches originally written by Raymond Toy.
3425 ** The compiler understands coercion between single-value and
3426 multiple-VALUES type expressions better, getting rid of some very
3427 weird behavior, thanks to patches originally by Robert MacLachlan
3428 and Douglas Crosher.
3429 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3430 lambda lists, thanks to a patch originally by Pierre Mai.
3431 ** The system no longer bogusly warns about "abbreviated type
3433 ** The compiler gets less confused by inlining and RETURN-FROM,
3434 thanks to some patches originally by Tim Moore.
3435 ** The system no longer hangs when dumping circular lists to fasl
3436 files, thanks to a patch originally from Douglas Crosher.
3437 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3438 undefined function error.
3439 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3440 in structure slot initforms) for now, documented workaround instead:-|
3441 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3442 * fixed bug 5: added stubs for various Gray stream functions called
3443 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3444 installed, at least appropriate type errors are generated
3445 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3446 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3447 consistently in DEFMETHOD forms.
3448 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3449 it doesn't seem to affect SBCL after all
3450 * The C runtime system now builds with better optimization and many
3451 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3453 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3455 * The system is now under CVS at SourceForge (instead of the
3456 CVS repository on my home machine).
3457 * The new signal handling code has been tweaked to treat register
3458 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3459 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3460 downstream, e.g. in debug-int.lisp, has implicit dependencies
3461 on the unsignedness of integer representation of machine words,
3462 and that caused the system to bomb out with infinite regress
3463 when trying to recover from type errors involving signed values,
3464 e.g. (BUTLAST '(1 2 3) -1).)
3465 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3466 (This was one of the bugs Peter Van Eynde reported back in July.)
3467 * The system now uses code inspired by Colin Walters' O(N)
3468 implementation of MAP (from the cmucl-imp@cons.org mailing
3469 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3470 inline the MAP operation, and there is more than one
3471 sequence argument to the MAP call (so that it can't just
3472 do ETYPECASE once and for all based on the type of the
3473 single sequence argument). (The old non-inline implementation
3474 of the general M-argument sequence-of-length-N case required
3475 O(M*N*N) time when any of the sequence arguments were LISTs.)
3476 * The QUIT :UNIX-CODE keyword argument has been renamed to
3477 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3478 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3480 * Raymond Wiker's patches to port dynamic loading from Linux to
3481 FreeBSD have been added.
3482 * The BUGS file is now more nearly up to date, thanks in large part
3483 to Martin Atzmueller's review of it.
3484 * The debugger now flushes standard output streams before it begins
3485 its output ("debugger invoked" and so forth).
3486 * The core version number and fasl file version number have both
3487 been incremented, because of incompatible changes in the layout
3489 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3490 used to not be called for a saved Lisp image.)
3491 * Martin Atzmueller's version of a patch to fix a compiler crash,
3492 as posted on sbcl-devel 13 September 2000, has been installed.
3493 * Instead of installing Martin Atzmueller's patch for the
3494 compiler transform for SUBSEQ, I deleted the compiler transform,
3495 and transforms for some similar consing operations.
3496 * A bug in signal handling which kept TRACE from working on OpenBSD
3498 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3499 away by constant folding
3500 * The system now defines its address space constants in one place
3501 (in the Lisp sources), and propagates them automatically elsewhere
3502 (through GENESIS and the sbcl.h file). Therefore, patching the
3503 address map is less unnecessarily tedious and error-prone. The
3504 Lisp names of address space constants have also been systematized.
3505 * CVS tags like dollar-Header-dollar have been removed from
3506 the sources, because they have never saved me trouble and
3507 they've been source of trouble working with patches and other
3508 diff-related operations.
3509 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3510 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3512 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3514 * The system has been ported to OpenBSD.
3515 * The system now compiles with a simple "sh make.sh" on the systems
3516 that it's supported on. I.e., now you no longer need to tweak
3517 text in the target-features.lisp-expr and symlinks in src/runtime/
3518 by hand, the make.sh takes care of it for you.
3519 * The system is no longer so grossly inefficient when compiling code
3520 involving vectors implemented as general (not simple) vectors (VECTOR T),
3521 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3522 which dares to use the various sequence functions on non-simple
3523 vectors, takes less of a performance hit.
3524 * There is now a primitive type predicate VECTOR-T-P
3525 to test for the (VECTOR T) type, so that e.g.
3526 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3527 can now be compiled with some semblance of efficiency. (The old code
3528 turned the type declaration into a full call to %TYPEP at runtime!)
3529 * AREF on (VECTOR T) is still not fast, since it's still compiled
3530 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3531 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3532 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3533 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3534 without making full calls to SUBTYPEP at runtime.
3535 (Some analogous efficiency issues for non-simple vectors specialized to
3536 element types other than T, or for non-simple multidimensional arrays,
3537 have not been addressed. They could almost certainly be handled the
3538 same way if anyone is motivated to do so.)
3539 * The changes in array handling break binary compatibility, so
3540 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3541 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3542 instead of (VALUES T T).
3543 * By following the instructions that Dan Barlow posted to sbcl-devel
3544 on 2 July 2000, I was able to enable primitive dynamic object
3545 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3546 functionality is not implemented (since it calls ld to resolve
3547 library references automatically, requiring RUN-PROGRAM for its
3548 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3549 try to resolve library references) is now supported.
3550 * The system now flushes the standard output streams when it terminates,
3551 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3552 them at several other probably-convenient times, e.g. in each pass of
3553 the toplevel read-eval-print loop, and after evaluating a form given
3554 as an "--eval" command-line option. (These changes were motivated by a
3555 discussion of stream flushing issues on cmucl-imp in August 2000.)
3556 * The source transform for TYPEP of array types no longer assumes
3557 that an array whose element type is a not-yet-defined type
3558 is implemented as an array of T, but instead punts, so that the
3559 type will be interpreted at runtime.
3560 * There is now some support for cross-compiling in make.sh: each of
3561 the phases of make.sh has its own script. (This should be transparent
3562 to people doing ordinary, non-cross-compile builds.)
3563 * Since my laptop doesn't have hundreds of megabytes of memory like
3564 my desktop machine, I became more motivated to do some items on
3565 my to-do list in order to reduce the size of the system a little:
3566 ** Arrange for various needed-only-at-cold-init things to be
3567 uninterned after cold init. To support this, those things have
3568 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3569 symbols with such names are now uninterned after cold init).
3570 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3571 fasl files for cold load.
3572 ** Remove the old compiler structure pooling code (which used to
3573 be conditional on the target feature :SB-ALLOC) completely.
3574 ** Redo the representation of some data in cold init to be more compact.
3575 (I also looked into supporting byte compiled code at bootstrap time,
3576 which would probably reduce the size of the system a lot, but that
3577 looked too complicated, so I punted for now.)
3578 * The maximum signal nesting depth in the src/runtime/ support code has
3579 been reduced from 4096 to 256. (I don't know any reason for the very
3580 large old value. If the new smaller value turns out to break something,
3581 I'll probably just bump it back up.)
3582 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3584 * Many, many bugs reported by Peter Van Eynde have been added to
3585 the BUGS list; some have even been fixed.
3586 * While enabling dynamic object file loading, I tried to make the
3587 code easier to understand, renaming various functions and variables
3588 with less ambiguous names, and changing some function calling
3589 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3590 * While trying to figure out how to do the OpenBSD port, I tried to
3591 clean up some of the code in src/runtime/. In particular, I dropped
3592 support for non-POSIX signal handling, added various comments,
3593 tweaked the code to reduce the number of compilation warnings, and
3594 renamed some files to increase consistency.
3595 * To support the new automatic configuration functionality in make.sh,
3596 the source file target-features.lisp-expr has been replaced with the
3597 source file base-target-features.lisp-expr and the machine-generated
3598 file local-target-features.lisp-expr.
3599 * fixed a stupid quoting error in make.sh so that using CMU CL
3600 "lisp -batch" as cross-compilation host works again
3602 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3604 * DESCRIBE no longer tries to call itself recursively to describe
3605 bound/fbound values, so that it no longer fails on symbols which are
3606 bound to themselves (like keywords, T, and NIL).
3607 * DESCRIBE now works on generic functions.
3608 * The printer now prints less-screwed-up representations of closures
3609 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3610 * A private symbol is used instead of the :EMPTY keyword previously
3611 used to mark empty slots in hash tables. Thus
3612 (DEFVAR *HT* (MAKE-HASH-TABLE))
3613 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3614 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3615 now does what ANSI says that it should. (You can still get
3616 similar noncompliant behavior if bang on the hash table
3617 implementation with all the symbols you get back from
3618 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3619 This breaks binary compatibility, since tests for equality to
3620 :EMPTY are wired into things like the macroexpansion of
3621 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3623 * There's now a minimal placeholder implementation for CL:STEP,
3624 as required by ANSI.
3625 * An obscure bug in the interaction of the normal compiler, the byte
3626 compiler, inlining, and structure predicates has been patched
3627 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3628 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3630 * Missing ordinary arguments in a macro call are now detected even
3631 when the macro lambda list contains &KEY or &REST.
3632 * The debugger no longer complains about encountering the top of the
3633 stack when you type "FRAME 0" to explicitly instruct it to go to
3634 the top of the stack. And it now prints the frame you request even
3635 if it's the current frame (instead of saying "You are here.").
3636 * As specified by ANSI, the system now always prints keywords
3637 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3639 * The default initial SIZE of HASH-TABLEs is now smaller.
3640 * Type information from CLOS class dispatch is now propagated
3641 into DEFMETHOD bodies, so that e.g.
3642 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3644 is now basically equivalent to
3645 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3646 (DECLARE (TYPE SINGLE-FLOAT X))
3648 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3649 operation, without having to do run-time type dispatch.
3650 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3651 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3652 * Since I don't seem to be making big file reorganizations very often
3653 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3654 is overflowing my ability to conveniently back them up), I've finally
3655 checked the system into CVS. (The CVS repository is on my home system,
3656 not at SourceForge -- putting it on SourceForge might come later.)
3657 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3658 high-level GC-NOTIFY-FOO functions send their output. (There's
3659 still very little control of where low-level verbose GC functions
3660 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3661 less than it used to -- the GC-NOTIFY-FOO functions are now under
3662 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3663 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3664 in only one place in the source code, and propagates it automatically
3665 everywhere that it's needed. Thus e.g. when I bump the version from
3666 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3667 * The C source files now include boilerplate legalese and documentation
3668 at the head of each file (just as the Lisp source files already did).
3669 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3670 to his page will be replaced with a link to his new CLiki service.
3672 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3674 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3675 * The build process now looks for GNU make under the default name "gmake",
3676 instead of "make" as it used to. If GNU make is not available as "gmake"
3677 on your system, you can change this default behavior by setting the
3678 GNUMAKE environment variable.
3679 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3680 can build without error under CMU CL.
3682 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3684 * There is now a partial SBCL user manual (with some new text and some
3685 text cribbed from the CMU CL manual).
3686 * The beginnings of a profiler have been added (starting with the
3687 CMU CL profiler and simplifying and cleaning up). Eventually the
3688 main interface should be through the TRACE macro, but for now,
3689 it's still accessed through vaguely CMU-CL-style functions and macros
3690 exported from the package SB-PROFILE.
3691 * Some problems left over from porting CMU CL to the new
3692 cross-compilation bootstrap process have been cleaned up:
3693 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3694 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3695 part when getting rid of the compiler *BACKEND* stuff.)
3696 ** The value of *NULL-TYPE* was screwed up, because it was
3697 being initialized before the type system knew the final
3698 definition of the 'NULL type. This screwed up several key
3699 optimizations in the compiler, causing inefficiency in all sorts
3700 of places. (I found it because I wanted to understand why
3701 GET-INTERNAL-RUN-TIME was consing.)
3702 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3703 PROCLAIM FTYPE information. Unfortunately this broke binary
3704 compatibility again, since now the forms output by DEFGENERIC
3705 to refer to functions which didn't exist in 0.6.3.
3706 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3707 can use the new (as of 0.6.3) transform for SOME into MAP into
3709 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3710 values to (INTEGER 0 1000000), so that the time code will no longer
3711 occasionally get blown up by Linux returning 1000000 microseconds
3712 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3713 its output conform to the ANSI spec. (Alas, this makes its output
3714 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3715 * A full call to MAP NIL with a single sequence argument no longer conses.
3716 * fixes to problems pointed out by Martin Atzmueller:
3717 * The manual page no longer talks about multiprocessing as though
3718 it were currently supported.
3719 * The ILISP support patches have been removed from the distribution,
3720 because as of version 5.10.1, ILISP now supports SBCL without us
3721 having to maintain patches.
3722 * added a modified version of Raymond Toy's recent CMU CL patch for
3723 EQUALP comparison of HASH-TABLE
3725 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3727 * The system still can't cross-compile itself with
3728 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3729 entails), but at least it can compile more of itself that way
3730 than it used to be able to, and various buglets which were uncovered
3731 by trying to cross-compile itself that way have now been fixed.
3732 * This release breaks binary compatibility again. This time
3733 at least I've incremented the FASL file format version to 2, so that the
3734 problem can be detected reliably instead of just causing weird errors.
3735 * various new style warnings:
3736 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3737 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3738 ** using the lexical binding of a variable named in the *FOO* style
3739 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3740 as specified by ANSI.
3741 * *RANDOM-STATE* is no longer automatically initialized from
3742 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3743 default behavior of the system is to repeat its behavior every time
3744 it's run. If you'd like to change this behavior, you can always
3745 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3746 old convention there was no comparably easy way to get the system to
3747 repeat its behavior every time it was run.
3748 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3749 FTYPE declarations has been removed, in favor of their ANSI
3750 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3751 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3752 the types of their sequence arguments can be determined at compile time.
3753 This is done through a new open code expansion for MAP which eliminates
3754 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3755 argument types can be determined at compile time.
3756 * The optimizer now transforms COERCE into an identity operation when it
3757 can prove that the coerced object is already of the correct type. (This
3758 can be a win for machine generated code, including the output of other
3759 optimization transforms, such as the MAP transform above.)
3760 * Credit information has been moved from source file headers into CREDITS.
3761 * Source file headers have been made more standard.
3762 * The CASE macro now compiles without complaining even when it has
3765 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3767 * (Note that the way that the PCL macroexpansions were rewritten
3768 to accommodate the change in DEFGENERIC below breaks binary
3769 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3770 not run under sbcl-0.6.2. Once we get out of alpha releases,
3771 i.e. hit release 1.0.0, we'll probably try to maintain binary
3772 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3773 and sbcl-1.4.4. Until then, however, it might be fairly common
3774 for maintenance releases to break binary compatibility.)
3775 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3777 * The reporting of unhandled signals has been changed to print some
3778 explanatory text as well as the report form. (Previously only
3779 the report form was printed.)
3780 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3781 it defines, so that the compiler no longer issues undefined function
3782 warnings for compiled-but-not-yet-loaded generic functions.
3783 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3784 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3785 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3786 section of the ANSI spec are supported.
3787 * The "" nickname for the "KEYWORD" package has been removed.
3788 The reader still handles symbol tokens which begin with a package marker
3789 as keywords, but it doesn't expose its mechanism for doing so in the
3790 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3791 * The system now issues STYLE-WARNINGs for contradictory TYPE
3792 proclamations. (Warnings for contradictory FTYPE proclamations would
3793 be nice too, but those can't be done usefully unless the type system
3794 is made smarter about FUNCTION types.)
3795 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3796 systematized, so that "*target-*.lisp is supposed to exist only on the
3797 target and imply that there's a related file which exists on the
3798 host, and *host-*.lisp is supposed to exist only on the host and imply
3799 that there's a related file which exists on the target. This involves a
3800 lot of renaming. Hopefully the acute confusion caused by the renaming
3801 will be justified by the reduction in chronic confusion..
3802 ** runtime-type.lisp -> early-target-type.lisp
3803 ** target-type.lisp -> late-target-type.lisp
3804 ** early-host-format.lisp -> early-format.lisp
3805 ** late-host-format.lisp -> late-format.lisp
3806 ** host-error.lisp -> misc-error.lisp
3807 ** early-error.lisp -> early-target-error.lisp
3808 ** late-error.lisp -> late-target-error.lisp
3809 ** host-defboot.lisp -> early-defboot.lisp
3810 ** code/misc.lisp -> code/target-misc.lisp
3811 ** code/host-misc.lisp -> code/misc.lisp
3812 ** code/numbers.lisp -> code/target-numbers.lisp
3813 ** code/early-numbers.lisp -> numbers.lisp
3814 ** early-host-type.lisp -> early-type.lisp
3815 ** late-host-type.lisp -> late-type.lisp
3816 ** host-typep.lisp -> typep.lisp
3817 ** load.lisp -> target-load.lisp
3818 ** host-load.lisp -> load.lisp
3819 ** host-disassem.lisp -> disassem.lisp
3820 ** host-insts.lisp -> insts.lisp
3821 ** byte-comp.lisp -> target-byte-comp.lisp
3822 ** host-byte-comp.lisp -> byte-comp.lisp
3823 ** host-signal.lisp -> signal.lisp
3824 ** host-defstruct.lisp -> defstruct.lisp
3825 ** late-target-type.lisp -> deftypes-for-target.lisp
3826 Furthermore, several other previously target-only files foo.lisp (e.g.
3827 hash-table.lisp and random.lisp) have been split into a target-and-host
3828 foo.lisp file and a target-only target-foo.lisp file, with their key type
3829 definitions in the target-and-host part, so that the cross-compiler will
3830 know more about target types.
3831 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3832 gone away. In their place are various *BACKEND-FOO* variables
3833 corresponding to the slots of the old structure.
3834 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3835 into the target SBCL has been fixed.
3836 * The chill.lisp system for loading cold code into a running SBCL
3838 * Support for the CMU CL "scavenger hook" extension has been removed.
3839 (It was undocumented and unused in the CMU CL sources that SBCL was
3840 derived from, and stale in sbcl-0.6.1.)
3841 * Various errors in the cross-compiler type system were detected
3842 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3843 (enabling various consistency checks). Many of them were fixed,
3844 but some hard problems remain, so the compiler is back to
3845 running without *TYPE-SYSTEM-INITIALIZED* for now.
3846 * As part of the cross-compiler type system cleanup, I implemented
3847 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3848 * I have started adding UNCROSS calls throughout the type system
3849 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3850 on cross-compiler input files will be able to go away, and various
3852 * CONSTANTP now returns true for quoted forms (as explicitly required
3855 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3857 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3858 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3859 (MAKE-LIST -1). In the longer term, it ought to become true
3860 that declarations are assertions even at SAFETY 1. For now, it's not
3861 quite true even at SAFETY 3, but it's at least more nearly true..
3862 (Note that this change seems to increases the size of the system by
3863 O(5%) and to decrease the speed of the compiler by 20% or more.)
3864 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3865 for the problem of printing dozens of lines of distracting information
3866 about low-level system machinery as part of the top stack frame
3867 on entry to the debugger when an undefined function was called.
3868 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3869 is not reset to COMMON-LISP-USER.
3870 * Compilation of stuff related to dyncount.lisp has been made conditional
3871 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3872 smaller. The various dyncount-related symbols have been moved into
3873 a new "SB-DYNCOUNT" package.
3874 * tty-inspect.lisp has been renamed to inspect.lisp.
3875 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3876 feature has gone away. (When we eventually port to other flavors of
3877 libc and/or Unix, we'll try to make the differences between flavors
3878 invisible at the user level.)
3879 * Various other *FEATURES* tags, and/or their associated conditionals,
3880 have been removed if obsolescent, or given better documentation, or
3881 sometimes given more-mnemonic names.
3883 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3885 * tidied up "make.sh" script
3886 * tidied up system directory structure
3887 * better "clean.sh" behavior
3888 * added doc/FOR-CMUCL-DEVELOPERS
3889 * many many small tweaks to output format, e.g. removing possibly-confusing
3890 trailing #\. character in DESCRIBE-INSTANCE
3891 * (EQUALP #\A 'A) no longer signals an error.
3892 * new hashing code, including EQUALP hashing
3893 * tidied up Lisp initialization and toplevel
3894 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3895 * command line argument processing
3896 * added POSIX-GETENV function to deal with Unix-ish environment variables
3897 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3898 terminating SBCL on EOF
3899 * non-verbose GC by default
3900 * There is no more "sbcl" shell script; the sbcl file is now the C
3901 runtime executable (just like CMU CL).
3902 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3904 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3905 symbol and package information as Lisp native symbol and package objects
3906 instead of strings naming symbols and strings naming packages. This way,
3907 whenever packages are renamed (as in warm init), debug information is
3908 transformed along with everything else.
3909 * tweaked the optimization policy declarations which control the building
3910 of SBCL itself. Now, among other things, the system no longer saves
3911 source location debugging information. (This helps two problems at once
3912 by reducing SBCL size and by keeping SBCL from trying to look for its
3913 sources -- which may not exist -- when reporting errors.)
3914 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3915 debugging and testing purposes
3916 * cleaned up printing, making the printer call PRINT-OBJECT for
3917 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3918 methods, giving nearly-ANSI behavior
3919 * converted almost all special variables to use *FOO* naming convention
3920 * deleted PARSE-TIME functionality, since it can be done portably
3921 * moved some files out of cold init into warm init
3922 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3924 * regularized formatting of source files
3925 * added an install.sh script
3926 * fixed ridiculous memory usage of cross-compiler by making
3927 compiler/alloc.lisp not try to do pooling unless it can hook
3928 itself into the GC of the cross-compilation host. Now the system
3929 builds nicely on my old laptop.
3930 * added :SB-ALLOC in target-features.lisp-expr
3931 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3932 was not implemented)
3933 * re-did condition handling and note reporting in the compiler. Notes
3934 are no longer handled by signalling conditions. Style warnings
3935 and warnings are handled more correctly and reported in such a way
3936 that it's easy to find one or the other in your output (so that you
3937 can e.g. figure out which of many problems caused COMPILE-FILE to
3939 * changed the severity of several compiler warnings from full WARNING
3940 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3941 compiler note reporting so that it doesn't use the condition system
3942 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3943 COMPILE-FILE command)
3944 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3945 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3946 no longer supported, since their implementation was deeply intertwingled
3947 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3948 * removed bogus "support" for compiler macros named (SETF FOO), and
3949 removed the compiler macro for SETF INFO (but only after making a fool
3950 of myself on the cmucl-imp mailing list by posting a bogus patch for
3951 DEFINE-COMPILER-MACRO..)
3952 * Compiled files containing forms which have side effects on the Lisp
3953 reader (such as DEFPACKAGE forms) are now handled more correctly.
3954 (Compiler queuing of top level lambdas has been suppressed by setting
3955 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3956 * deleted various currently-unused source files, e.g. gengc.lisp. They
3957 may be added back at some point e.g. when porting to other architectures,
3958 but until they are it's distracting to distribute them and to try to
3960 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3961 there were so many of them they're just distractions, and UNCROSS is
3962 known to be able to handle the current sources
3963 * moved PROFILE functionality into TRACE, so that it will be clear
3964 how the wrapping and unwrapping of functions when you profile them
3965 interacts with the wrapping and unwrapping of functions when you
3966 trace them. (Actually, the functionality isn't there yet, but at least
3967 the interface specification is there. Hopefully, the functionality will
3968 arrive with some future maintenance release.)
3969 * removed host-oops.lisp
3970 * changed signature of QUIT function to allow UNIX-CODE argument
3971 * fixed READ-SEQUENCE bug
3972 * tweaked verbose GC output so that it looks more like the progress
3973 output that ANSI specifies for functions like LOAD
3974 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
3975 * added <http://sbcl.sourceforge.com> to the banner information printed by