1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-0.9.19 (1.0.0?) relative to sbcl-0.9.18:
3 * improvement: runtime option --dynamic-space-size can be used
4 to set the size of the dynamic space reserved on startup.
5 * improvement: floating point modes in effect are now saved in
6 core, and restored on startup.
7 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
8 startup, not time since first call to GET-INTERNAL-REAL-TIME.
9 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
10 threads are not running after *SAVE-HOOKS* have run.
11 * improvement: writes to CLOS instance slots are type-checked in code
12 compiled with (SAFETY 3)
13 * improvement: floating-point exception handling should work on all
14 POSIX platforms (thanks to NIIMI Satoshi)
15 * bug fix: compiler bug triggered by a (non-standard) VALUES
16 declaration in a LET* was fixed. (reported by Kaersten Poeck)
17 * bug fix: file compiler no longer confuses validated and already
18 dumped structurres. (reported by Kaersten Poeck)
19 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
20 fill-pointer signals a type-error as required. (thanks to
22 * bug fix: disassemly of funcallable instances works.
23 * bug fix: single stepping on PPC.
24 * bug fix: fix thread-safety problems in the type system (generally
25 manifesting as nonsensical errors like "STRING is a bad type specifier
26 for sequences" or "The value 1 is not of type FIXNUM")
27 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
28 (reported by Josip Gracin)
29 * Improvements to the Windows port:
30 ** floating point exceptions are now reported correctly.
31 ** stack exhaustion detection works partially.
32 ** more accurate GET-INTERNAL-REAL-TIME.
33 ** better RUN-PROGRAM behaviour in case of errors in the child
35 ** PROBE-FILE now simplifies pathnames correctly.
36 ** DIRECTORY now works correctly with :WILD-INFERIORS.
37 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
38 1st 1970 (although time timezone data will be unreliable).
39 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
41 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
42 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
43 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
45 * bug fix: two potential GC deadlocks affecting threaded builds.
46 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
47 returns T (reported by Anton Kazennikov)
48 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
49 with non-variable places
50 * bug fix: remove a race condition in the setting of
51 funcallable-instance functions, this should make threaded CLOS
52 code more stable against memory faults.
53 * bug fix: corruption of specials when unbinding is interrupted by an
54 asynchronous unwind (reported by Hannu Koivisto)
55 * improvement: the debugger will now also display local variables that
56 are only used once, for code compiled with a DEBUG optimization quality
59 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
60 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
61 * incompatible change: External-format support for FFI calls. The
62 SB-ALIEN:C-STRING no longer implies an ASCII
63 external-format. Instead the string is subject to external-format
64 conversion. Additionally return values of type SB-ALIEN:C-STRING
65 are by default of type (SIMPLE-ARRAY CHARACTER), not
66 SIMPLE-BASE-STRING. For an alien type that behaves like the old
67 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
68 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
69 * incompatible change: SB-EXT package no longer contains the
70 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
71 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
73 * incompatible change: the single-stepper is no longer available
74 on Alpha, Mips and Sparc platforms.
75 * minor incompatible change: the direct superclasses of
76 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
77 not (STANDARD-OBJECT FUNCTION). This makes the
78 class-precedence-lists of GENERIC-FUNCTION and
79 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
81 * minor incompatible change: the default stream external format on
82 non-unicode SBCL is no longer detected from the locale, but is always
84 * new feature: Add a version of evaluator that uses an interpreter instead
85 of the compiler. EVAL still uses the compiler by default, to switch it
86 to use the interpreter, set the value of the variable
87 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
88 * minor incompatible change: the single-stepper REPL has been merged
89 with the normal debugger (see the "Stepping" heading of the debugger help
90 for more details). The debugger command STEP will no longer switch
91 to the single-stepper REPL.
92 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
94 * bug fix: loading of default sysinit file works. (thanks to Leonid
96 * bug fix: better detection of circularities in the file-compiler.
97 (reported by Marco Monteiro)
98 * bug fix: the CL pathname functions now work with files that have
99 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
100 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
101 systems with Unix98 pty semantics.
102 * bug fix: ASDF-INSTALL will now work with bsd tar.
103 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
105 * bug fix: timers expiring in dead threads no longer cause a
106 type-error (reported by Paul "Nonny Mouse").
107 * bug fix: thanks to more lightweight single-stepper instrumentation,
108 code compiled with (DEBUG 3) will compile and execute significantly faster,
109 and will have more accurate type-inferencing than before
110 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
111 whose bindings are modified
112 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
113 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
114 ** replace dummy implementations of CL:MACHINE-INSTANCE and
115 CL:SOFTWARE-VERSION with proper version
117 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
118 * feature: implemented the READER-METHOD-CLASS and
119 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
120 as specified by AMOP.
121 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
123 * optimization: faster LOGCOUNT implementation on x86 and x86-64
124 (thanks to Lutz Euler)
125 * optimization: hashing of general arrays and vectors has been
126 improved. (reported by Any Fingerhut)
127 * enhancement: SB-INTROSPECT is now able to find definitions of
128 profiled functions. (thanks to Troels Henriksen)
129 * enhancement: compiler-macro expansion applies now to FUNCALL forms
130 as well, allowing compiler-macros for SETF-functions to expand.
131 * enhancement: step-instrumentation no longer wraps known
132 single-value functions with multiple-value context, allowing
133 better type inference.
134 * fixed bug #337: use of MAKE-METHOD in method combination now works
135 even in the presence of user-defined method classes. (reported by
136 Bruno Haible and Pascal Costanza)
137 * fixed bug #339(c): if there are applicable methods not part of any
138 long-form method-combination group, call INVALID-METHOD-ERROR.
139 (reported by Bruno Haible)
140 * fixed bug #361: the :FUNCTION initarg in the protocol for
141 initialization of methods can now be used to override
142 internally-produced optimized functions. (reported by Bruno
144 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
145 system-provided lambda expression no longer cause warnings about
146 unbound #:|pv-table| symbols.
147 * bug fix: improved the handling of type declarations and the
148 detection of violations for keyword arguments with non-constant
150 * bug fix: potentially erronous calls to PATHNAME and
151 MERGE-PATHNAMES were being flushed in some cases.
152 (reported by Richard Kreuter)
153 * bug fix: compiled calls to TYPEP were mishandling obsolete
154 instances. (reported by James Bielman and Attila Lendvai)
155 * bug fix: format strings with ~> without matching ~< no longer
156 trigger an AVER, but signal an understandable error instead.
157 (reported by Antonio Martinez)
158 * bug fix: specifying an output-file without a pathname-type for
159 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
160 of input-file instead of "fasl". (reported by Robert Dodier)
161 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
162 (reported by James Y Knight).
163 * bug fix: compiler-macros-function did not consider the environment
164 argument for shadowing by local functions.
165 * bug fix: compiler-macros expansion was inhibited by local INLINE
167 * bug fix: inline expansions of known functions were subject to
168 step-instrumentation in high debug policies, leading to problems
170 * bug fix: compiler failed to differentiate between different CONS
172 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
173 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
174 * bug fix: #368: incorrect use of expressed vs. upgraded array
176 * bug fix: #306a: more precise unions of array types.
177 * thread-safety improvements:
178 ** CONDITION-WAIT could return early on Linux, if the thread was
179 interrupted and subsequently continued with SIGCONT.
180 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
182 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
183 * added support for the ucs-2 external format. (contributed by Ivan
185 * minor incompatible change: pretty printing of objects of type
186 (cons symbol) is, in the default pprint-dispatch-table, now
187 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
189 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
190 called later in a class's lifetime, possibly as late as when the
191 first instance of the class is created. Previously,
192 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
193 class became finalizeable.
194 * fixed bug: FILE-POSITION sometimes returned inconsistent results
195 for multibyte external-format streams. (thanks to "vbzoli")
196 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
197 with :ALLOCATION :CLASS inherited from superclasses of the
199 * fixed bug: anonymous classes can now be created using the :NAME
200 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
201 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
202 * fixed bug: core-files saved with :EXECUTABLE T can again be
203 executed when SBCL_HOME isn't set. (reported by James Knight)
204 * fixed bug: toplevel LOCALLY forms with declarations could
205 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
206 * fixed bug: printing from several different threads using different
207 values of *print-case* could cause invalid output, due to
208 some internal special variables of the printer not being bound
209 thread-locally (reported by Max Mikhanosha)
210 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
211 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
212 (reported by Pascal Costanza)
213 * fixed bug: FINALIZE-INHERITANCE is called from
214 REINITIALIZE-INSTANCE on classes when the class has previously
215 been finalized, as required by AMOP.
216 * minor code generation optimizations:
217 ** better register allocation in CLOS dispatching functions
218 ** overflow detection when coercing signed bytes to fixnums on x86-64
219 ** is now implemented with one IMUL instruction instead of three shifts
220 ** more efficient bit-vector access on x86 and x86-64
221 ** more efficient access to raw structure slots on x86 and x86-64
222 * fixed some bugs revealed by Paul Dietz' test suite:
223 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
226 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
227 * feature: thread support on Solaris/x86, and experimental thread support
229 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
231 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
232 default method for SLOT-UNBOUND.
233 * minor incompatible change: prevent the user from specializing the
234 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
235 somewhat counter to the intent of the protocol, I (CSR) think, and
236 additionally it just doesn't work in SBCL as currently
237 implemented, thanks to optimizations (that are always valid for
238 the other three SLOT-VALUEish functions, but not for the setter).
239 * minor incompatible change: the :SB-LDB feature is now enabled by
240 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
241 the low-level debugger.
242 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
243 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
244 down to an SB-SYS:FD-STREAM, allowing direct communication in
245 more cases. Temporary files and pipes are still used as a fallback
247 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
248 on the non-reentrant C functions localtime(3) and gmtime(3).
249 * bug fix: global optimization policy was not visible in LOCALLY and
251 * bug fix: class objects can be used as specializers in methods.
252 (reported by Pascal Costanza)
253 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
254 with a type error. (reported by blitz_ on #lisp)
255 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
256 failed with a type error. (reported by Pascal Bourguignon)
257 * bug fix: merging pathnames against defaults with :DIRECTORY
258 starting with '(:RELATIVE :BACK) should preserve the :BACK.
259 (reported by James Y Knight)
260 * bug fix: saving large (>2GB) cores on x86-64 now works
261 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
262 constant index and a (simple-array (signed-byte 32)) array
263 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
264 error (patch by Robert J. Macomber)
265 * feature: TIME now displays the amount of run-time spent in GC
266 * bug fix: The debugger now does a better job of respecting
267 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
268 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
269 workaround for bug 403.)
270 * bug fix: floating point exception handling now works on FreeBSD
271 (thanks to NIIMI Satoshi)
272 * fixed some bugs revealed by Paul Dietz' test suite:
273 ** MISC.641: LET-conversion were not supposed to work in late
275 * improvements to the Win32/x86 port:
276 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
277 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
279 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
280 * new feature: source path information is generated for macro-expansion
281 errors for use in IDE's like Slime (thanks to Helmut Eller)
282 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
283 * bug fix: compiler does not loop forever on an invalid type in
285 * improvement: compilation of most CLOS applications is significantly
287 * optimization: added a limited bytecode compiler for simple toplevel
288 forms, speeding up compilation and FASL loading
289 * bug fix: the statistical profiler now properly distinguishes anonymous
292 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
293 * minor incompatible change: in sbcl-0.9.11 (but not earlier
294 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
295 into subclasses of the finalized class. Now user calls to
296 FINALIZE-INHERITANCE finalize just the one class, and calls by the
297 system return before any subclasses are finalized.
298 * minor incompatible change: The reader no longer ignores errors
299 regarding non-existent packages in #+ and #- feature tests.
300 * new feature: command line options --no-sysinit, --no-userinit to
301 inhibit loading the corresponding init files
302 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
303 for sending data through UDP sockets (thanks to François-René Rideau)
304 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
305 error is signalled instead (thanks to François-René Rideau)
306 * minor incompatible change: Error signalling behaviour of lexical
307 operations violating package locks has changed slightly. Refer to
308 documentation on package locks for details.
309 * enhancement: EVAL can process IF-expressions without resorting to the
311 * bug fix: Some operations involving SIN, COS, or TAN weren't being
312 constant-folded properly due to missing out-of-line functions.
313 (reported by Mika Pihlajamäki)
314 * bug fix: LISTEN sometimes returned T even in cases where no data was
315 immediately available from the stream
316 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
317 were reversed. (reported by Levente Mészáros)
318 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
319 when given a vector displaced to an adjustable array. (reported
321 * bug fix: derivation of float boundaries from numbers outside the
322 appropriate float range (reported by John Wiseman)
323 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
325 * bug fix: precomputing cache entries for generic functions with
326 some subclasses of specializers as yet invalid does not attempt to
327 fill a cache line with a negative offset. (reported by Levente
329 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
330 allow condition class objects as arguments to DOCUMENTATION and
331 (SETF DOCUMENTATION); only find and set documentation for
332 structure names for the STRUCTURE doc-type. (suggested by Gary
334 * improvements to the Win32/x86 port:
335 ** (user-homedir-pathname) and default initialization file
336 locations now know about the user's "Documents and Settings"
337 directory (thanks to Yaroslav Kavenchuk)
338 ** run-program is implemented (thanks to Mike Thomas)
339 ** sockets support (thanks to Timothy Ritchey)
340 ** better backtrace support (thanks to Alastair Bridgewater)
341 ** sb-grovel supported
342 ** asdf-install and sb-posix work somewhat
343 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
344 * improvements to the Solaris/x86 port:
345 ** works on Solaris 11/Solaris Express
346 ** floating-point exception handling support
347 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
348 * fixed some bugs revealed by Paul Dietz' test suite:
349 ** REMOVE-METHOD returns its generic function argument even when
350 the method is not one of the generic functions' methods.
351 ** objects declared as MEMBER types can be admissible arguments to
353 ** printing characters should simply be printed by the FORMAT ~:C
355 ** compiler failure when compiling functions with hairy constant
356 defaults for optional parameters.
357 ** compiler produces wrong code when MAYBE-INLINE-expanding a
358 function, which is already optimized.
360 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
361 * new platform: experimental support for SBCL x86/Darwin, including
362 MacOS X 10.4.5 on Intel.
363 * new feature: Unicode character names are now known to the system
364 (through CHAR-NAME and NAME-CHAR).
365 * new feature: the filesystem location of SBCL's core file is
366 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
367 * minor incompatible change: the contrib modules SB-POSIX and
368 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
369 this change is to make it easier to distribute
370 location-independent binaries.
371 * bug fix: as implied by AMOP, standardized classes no longer have
372 slots named by external symbols of public packages. (reported by
374 * optimization: calling functions via constant symbols -- as in
375 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
376 via the function object as in (FUNCALL #'FOO).
377 * optimization: on x86 and x86-64, the calling convention for the
378 case of dealing with an unknown number of values has been altered
379 to be friendlier to the prediction heuristics implemented,
380 particularly with reference to CALL and RET pairing. (thanks to
381 Alastair Bridgewater)
382 * optimization: on x86, the code for access to thread-local symbol
383 values and binding/unbinding of thread-local symbols is smaller.
384 (thanks to Alastair Bridgewater)
385 * enhancement: CONSTANTP is now able to determine constantness of
386 more complex forms, including calls to constant-foldable standardized
387 functions and some special forms beyond QUOTE.
388 * fixed bug: occasional GC crashes on Solaris/x86
389 * optimization: x86-64 supports stack allocation of results of simple
390 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
391 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
392 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
393 (thanks to James Knight)
394 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
395 by the standard (thanks to Stephen Compall)
397 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
398 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
399 be used for bundling the runtime and the core file into one
400 executable binary. This feature is not currently supported on all SBCL
401 platforms. (thanks to James Bielman and NIIMI Satoshi)
402 * new feature: a generational or ephemeral garbage collector is now
403 the default on the PowerPC platform (both Linux and Darwin). The
404 old Cheney (stop and copy) collector is a build-time option.
405 (thanks to Cyrus Harmon, after Raymond Toy)
406 * minor incompatible change: the method by which SBCL finds its
407 contributed modules has changed; it no longer relies on symbolic
408 links from an $SBCL_HOME/systems directory, but searches directly
409 in the subdirectories of $SBCL_HOME.
410 * enhancement: the dynamic heap size on the Linux/PPC platform is
411 markedly larger, even using the older Cheney garbage collector.
412 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
413 certain complicated string types. (reported by Gary King)
414 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
415 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
416 * fixed bug: DOCUMENTATION on structures no longer signals an
417 error if no structure type of the right name exists. (reported by
419 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
420 applicable non-standard primary or :AROUND method on
421 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
422 no longer cause unbound variable errors. (reported by Kevin Reid)
423 * fixed bug: metacircle resolution in cases where methods have slots
424 added before the slots from STANDARD-METHOD. (reported by Jean
426 * fixed bug: the Power PC assembly code for calling into lisp
427 sometimes computed its return address wrongly (depending on the
428 15th bit of the address, fixed at link time). This used to
429 manifest itself in a segmentation violation while building PCL.
430 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
431 many others over the years)
432 * fixed bug: ROOM no longer reports silly numbers for stack usage if
433 the stack pointer (treated as a signed integer) is negative.
434 (thanks to Peter van Eynde)
436 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
437 * new platform: experimental support for the Windows operating
438 system has been added. (thanks to Alastair Bridgewater)
439 * fixed several bugs in and robustified the PPC FFI (including
440 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
441 * bug fix: allow non-simple string symbol names (reported by Paul
443 * bug fix: interrupt handling on NetBSD (thanks to Richard M
445 * bug fix: saving a core corrupted callbacks on x86/x86-64
446 * bug fix: closed a loophole in metacircularity detection and
447 grounding in the PCL implementation of CLOS.
448 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
449 (reported by tomppa on #lisp)
450 * bug fix: clear the direction flag on Lisp -> C transitions, as
451 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
452 (reported by Andrej Grozin and Hendrik Maryns)
453 * optimization: major improvements to GC efficiency on GENCGC platforms
454 * optimization: faster implementation of EQUAL
455 * optimization: emit more efficient opcodes for some common
456 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
457 * optimization: several other minor code-generation improvements on x86-64
458 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
460 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
461 * minor incompatible change: (SETF CLASS-NAME) and (SETF
462 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
463 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
464 by ANSI as a generic function, and for consistency (SETF
465 GENERIC-FUNCTION-NAME) is treated likewise.
466 * fixed bug #233.b: make constraint propagation notice when a variable
467 value is changed after it is referenced but before it is used
468 * fixed bug #296: no more arbitrary behaviour from filenames with
469 odd characters as --load arguments. (reported by Adam Warner)
470 * fixed bug #390: :CHARACTER-SET pathname components now work as
471 expected. (reported by Tim Daly Jr)
472 * fixed bug #391: complicated :TYPE intersections in slot
473 definitions no longer cause an error in PCL internals.
474 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
475 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
476 returning the number of octets which would be written to the
477 file-stream. (thanks to Robert J. Macomber)
478 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
479 arguments to the internal stream functions. (thanks to David
481 * bug fix: stack exhaustion is now handled on the x86/SunOS
482 platform. (thanks to Daisuke Homma)
483 * bug fix: more accurate ROOM results on GENCGC platforms
484 * optimization: improved type inference for arithmetic-for
485 index variables in LOOP
486 * optimization: faster floating-point SQRT on x86-64
487 * fixed some bugs revealed by Paul Dietz' test suite:
488 ** DOCUMENTATION returns NIL instead of "" for method combinations
489 that don't have a docstring
491 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
492 * minor incompatible change: (SETF CLASS-NAME) and (SETF
493 GENERIC-FUNCTION-NAME) are no longer generic functions, and
494 therefore are not customizeable by user code (as seems to be at
495 least permitted and maybe required by AMOP). As a consolation,
496 however, the SBCL implementation of these functions now calls
497 REINITIALIZE-INSTANCE as specified by AMOP.
498 * bug fix: slot-definition documentation is propagated as per ANSI
499 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
500 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
501 argument, as do eslotd initialization methods. (from Pascal
502 Costanza's "Closer" project)
503 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
504 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
506 * bug fix: it is now possible to have more than one subclass of
507 STANDARD-GENERIC-FUNCTION without causing stack overflow.
508 (reported by Bruno Haible, Pascal Costanza and others)
509 * bug fix: the dependent update protocol now works for generic
510 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
512 * bug fix: condition-class instances corresponding to
513 DEFINE-CONDITION forms are now created eagerly. (reported by
514 Kalle Olavi Niemitalo on comp.lang.lisp)
515 * bug fix: floating point printing is more accurate in some
516 circumstances. (thanks to Simon Alexander)
517 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
518 merged with *DEFAULT-PATHNAME-DEFAULTS*.
519 * bug fix: callbacks on OS X now preserve stack-alignment.
520 (thanks to Cyrus Harmon)
521 * enhancement: the x86-64 disassembler is much better at
522 disassembling SSE instructions. (thanks to Lutz Euler)
523 * enhancement: CHECK-TYPE on a variable now allows type-inference
524 (thanks to Vincent Arkesteijn)
525 * optimization: improved performance of EUC-JP external format.
526 (thanks to NIIMI Satoshi)
527 * optimization: performance improvements to IO on file streams of
528 :ELEMENT-TYPE CHARACTER
529 * optimization: much faster memory allocation on x86-64
530 * optimization: faster garbage collections (latency and throughput)
532 * optimization: faster bignum subtraction and division on x86 and x86-64
533 (thanks to Lutz Euler)
534 * optimization: more accurate type-inference for loops that use a
535 floating point index variable or a negative step.
537 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
538 * bug fix: add a workaround to SBCL looping infinitely at startup on
539 Linux kernels with apparently buggy implementations of personality().
540 (thanks to Svein Ove Aas)
541 * bug fix: Unicode symbols are correctly printed in LDB backtraces
542 (thanks to David Lichteblau)
543 * bug fix: local bindings shadow global symbol macros for
544 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
545 * optimization: non-open coded uses of numeric comparison operators
546 (e.g. >) no longer cons when called with more than one parameter
547 on platforms supporting dynamic-extent allocation.
548 * enhancement: saving cores with foreign code loaded is now supported
549 on MIPS/Linux in addition to the previously supported platforms.
550 * bug fix: FIND-RESTART now tests for activity, not applicability when given
551 a restart object as identifier. (reported by Helmut Eller for CMUCL)
552 * bug fix: division by zero in sb-sprof when no samples were collected
553 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
554 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
555 (thanks to Alexander Kjeldaas)
556 * new feature: ignoring the return values of destructive functions
557 like NREVERSE signals a compile-time style-warning.
558 (thanks to Kevin Reid)
559 * new feature: the alignment of alien structure fields can be
560 explicitly specified. (thanks to Cyrus Harmon)
561 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
562 and dump core on SIGQUIT
564 ** incompatible change: threads do not inherit values of specials
565 from their parents (see manual)
566 ** bug fix: threads stacks belonging to dead threads are freed by the
567 next exiting thread, no need to gc to collect thread stacks anymore
568 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
569 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
570 ** bug fix: dynamic variable and thread start related gc lossage
571 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
573 * fixed some bugs revealed by Paul Dietz' test suite:
574 ** SUBTYPEP is slightly more accurate on heinously complicated
575 CONS types where some of the members have uncertain (in the
576 NIL, NIL sense) type relationships to each other.
578 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
579 no longer purified unless :PURIFY T is explicitly specified.
580 ** Non-purified cores are significantly smaller than before
582 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
583 * new feature: timers based on Zach Beane's excellent timer package
584 * added support for the following external formats: koi8-u,
585 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
586 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
587 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
588 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
589 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
590 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
591 * incompatible change: a threaded SBCL will no longer revert to
592 non-threaded mode on non-NPTL systems, but refuse to start entirely.
593 * bug fix: interrupts are disabled until startup is complete; no
594 more sigsegvs when receiving a signal to soon
595 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
597 * bug fix: add a workaround for the memory randomization features in
598 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
599 workaround will only be in effect on systems with the proc filesystem
601 * bug fix: printing objects of type HASH-TABLE signals a
602 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
604 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
605 have been running for over 50 days. (reported by Gilbert Baumann)
606 * bug fix: the logic for getting names of functions gets less
607 confused when confronded with alternate-metaclass
608 funcallable-instances. (reported by Cyrus Harmon)
609 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
610 consistent, even on internal alternate-metaclass objects.
611 * bug fix: flush closure information collected by physical
612 environment analysis prepass before the main pass. (bug reported
614 * bug fix: compiler pack phase does not modify a hashtable, which is
615 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
616 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
617 may be expanded. (reported by Alexander <malishev> on c.l.l)
618 * bug fix: no more style-warnings when compiling code using LAST
619 under high-SPEED low-SPACE settings. (reported by David Wallin
621 * fixed some incompatibilities between SBCL's MOP and the MOP
623 ** the METAOBJECT class is now implemented;
624 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
625 STANDARD-OBJECT, as required;
626 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
627 now compatible (as required by VALIDATE-SUPERCLASS); there
628 remains a consistency requirement over the presence or absence
629 of the FUNCTION class in the superclass list of finalized
630 classes; see the manual for more details;
631 ** the :AROUND method for COMPUTE-SLOTS on
632 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
633 requested slot ordering.
635 ** bug fix: parent thread now can be gc'ed even with a live
637 ** bug fix: binding a special with PROGV to no value is not
638 the same as that symbol not having been bound (thanks to
640 ** bug fix: binding specials is thread safe (thanks to
642 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
643 and SB-SPROF do not die with 'no handler for signal XX in
644 interrupt_handle_now(..)' anymore
645 ** bug fix: WITH-TIMEOUT works with multiple running threads
646 * fixed some bugs revealed by Paul Dietz' test suite:
647 ** ENSURE-GENERIC-FUNCTION should take a method class object for
648 the :method-class keyword argument.
650 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
651 * new port: the Solaris operating system on x86 processors is now
652 mostly supported, though some rough edges in the environment
653 remain. (thanks to Daisuke Homma)
654 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
655 space for its heap. (thanks to Thiemo Seufer)
656 * optimization: SBCL on MIPS platforms now supports dynamic-extent
657 closures. (thanks to Thiemo Seufer)
658 * minor incompatible change: eof selects abort in the debugger.
659 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
660 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
662 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
663 deprecated, and will go away in a future revision of SBCL.
664 * minor incompatible change: GC-ON and GC-OFF are no longer
665 implemented with a counter, it does not matter how many times gc
666 is switched on or off
667 * bug fix: discriminating functions for generic function classes
668 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
669 make invalid assumptions about method precedence order. (reported
671 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
672 platforms. (thanks to Thiemo Seufer)
673 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
674 * bug fix: correct pathname printing with printer escaping is on.
675 (thanks to Kevin Reid)
676 * bug fix: complex VOP definitions in "user-space" no longer trigger
677 package locks. (reported by Zach Beane)
678 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
679 for funcallable-instance functions, and is no different from
681 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
682 characters in the current readtable. (reported by Nicholas Neuss)
683 * bug fix: SUBTYPEP on various CONS types returns more a more
684 accurate acknowledgment of its certainty.
685 * optimizations: REMOVE-DUPLICATES now runs in linear time on
686 lists in some cases. This partially fixes bug 384.
687 * flush all standard streams before prompting in the REPL and the
689 * bug fix: signal handling and triggering gc do not conflict
690 directly anymore, in particular a high frequency sb-sprof does
691 not prevent gc from running
692 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
693 approximation for timezone and DST information between the
694 universal time epoch and the smallest negative 32-bit time_t.
695 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
696 year 1899 so long as the encoded time is non-negative.
697 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
698 the correct answer for non-constant rotate amounts when performing
699 an inline 32-bit rotation.
701 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
702 there is only one thread in the session
703 ** bug fix: memory leak for streams created in one thread and
704 written to in another
705 ** bug fix: lockup when compiled with gcc4
706 ** bug fix: race that allows the gc to be triggered when gc is
708 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
709 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
711 ** bug fix: finished threads are gc'ed properly
712 * fixed some bugs revealed by Paul Dietz' test suite:
713 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
714 has arguments with a different set of applicable methods from
715 the orignal arguments.
716 ** The type error thrown by MAP now has a correct expected-type
718 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
719 name a compiled function.
720 ** Three MISC tests where a large bignum was improperly coerced to
721 a float that couldn't represent that bignum during type
722 derivation were fixed.
723 ** SUBTYPEP can now handle types involving the negation of a
724 list-form FUNCTION type.
725 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
726 as (COMPLEX (AND RATIO (NOT FIXNUM))).
727 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
729 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
730 * New feature: Experimental support for bivalent streams: streams
731 opened with :element-type :default now allow character and binary
732 (unsigned-byte 8) I/O
733 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
734 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
736 * bug fix: no more highly sporadic "couldn't check whether ~S is
737 readable" when reading a stream and an interrupt hits in the middle
738 of a select system call
739 * compiler better recognizes complex arrays (reported by Eduardo
741 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
742 for variables on SBCL built with linkage-tables. (reported by Luis
744 * various error reporting improvements.
745 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
746 (Thanks to Thiemo Seufer)
747 * bug fix: nested reader invokations work correctly
748 * bug fix: it is possible to have simultaneous references to foreign
749 code and foreign data with the same name.
751 ** added x86-64 support
752 ** incompatible change: the threading api now works with thread
753 objects instead of thread ids
754 ** bug fix: threads are protected from signals and interruption when
755 starting up or going down
756 ** bug fix: a race where an exiting thread could lose its stack to gc
757 ** bug fix: don't halt on infinite error in threads if possible
758 ** fixed numerous gc deadlocks introduced in the pthread merge
759 ** bug fix: fixed thread safety issues in read and print
760 ** bug fix: debugger doesn't hang on session lock if interrupted at
761 an inappropriate moment
762 ** bug fix: run-program is now thread safe(r)
763 ** bug fix: inner with-recursive-lock no longer releases the mutex
764 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
765 * fixed some bugs revealed by Paul Dietz' test suite:
766 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
767 EXPECTED-TYPE slots filled.
768 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
770 ** MAKE-CONDITION accepts classes as type-designators.
771 ** COMPILE may never return NIL.
772 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
773 range before calling Unix time functions
775 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
776 * numerous signal handling fixes to increase stability
777 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
778 * minor incompatible change: we now correctly canonize default
779 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
780 as per the MOP, rather than the historical (INITARG INITFUNCTION
781 INITFORM). (reported by Bruno Haible)
782 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
783 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
784 for more information.
785 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
786 pathname is a directory pathname.
787 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
788 * dynamic space size on PPC has been increased to 768Mb. (thanks to
790 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
791 :METACLASS argument in addition to a class name. (reported by
792 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
793 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
794 (reported by Bruno Haible; patch from Gerd Moellmann)
795 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
797 * bug fix: more cleanups to the floating point exception handling on
798 x86-64 (thanks to James Knight)
799 * bug fix: the compiler does not try to constant fold calls of
800 COERCE and BIT-* functions when they return freshly constructed
801 objects. (reported by Nikodemus Siivola and Paul Dietz)
802 * optimization: improved the MIPS versions of generic (in the
803 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
804 * optimization: direct conversion of (unsigned-byte 32) to floats on
805 the PowerPC platform.
806 * optimization: structure instances with raw slots now use less
807 memory, and probably show better memory locality. (thanks to
809 * optimization: DYNAMIC-EXTENT declarations for lists and closures
810 are treated as requests for stack allocation on the x86-64,
811 Alpha-32, PPC and SPARC platforms.
812 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
813 the wrong file descriptor; implementation of SOCKET-OPEN-P.
814 (thanks to Tony Martinez)
816 ** gcing a dead thread can no longer lead to lockups
817 ** threads block signals until they are set up properly
818 ** errno is no longer shared by threads
819 ** interrupt-thread restores the eflags register on x86
820 ** fixed some lockups due to gc/thread interaction
821 * fixed some bugs revealed by Paul Dietz' test suite:
822 ** invalid dotted lists no longer raise a read error when
824 ** signal an error if a symbol that names a declaration is used
825 as the name of a type, or vice versa
826 ** allow using the (declare (typespec var*)) abbreviation for
827 (declare (type typespec var*)) with all type specifiers
828 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
829 ** always return NIL from PPRINT-POP when OBJECT is NIL
830 ** don't signal errors when pretty-printing malformed LABELS,
831 FLET or MACROLET forms
832 ** declarations in a DOLIST body are also in scope for the
834 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
836 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
839 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
840 * fixed cross-compiler leakages that prevented building a 32-bit
841 target with a 64-bit host compiler.
842 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
843 opened with :IF-EXISTS :OVERWRITE.
844 * fixed bug 281: error for an invalid qualifier in a short-form method
845 combination method is not signalled until the faulty method is called.
846 * bug fix: iteration variable type inferrer failed to deal with open
847 intervals. (reported by Alan Shields)
848 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
849 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
850 or more runtime options were provided to the sbcl binary.
851 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
852 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
853 * optimization: there's now a fast-path for fixnum arguments in the
854 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
855 * optimization: the code generated on x86-64 is more compact thanks
856 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
857 * bug fix: floating-point exception handling now partly works on
858 x86-64. (Thanks to James Knight)
859 * improvement to the MIPS backend from Thiemo Seufer: C-style
860 64-bit long long arguments and return values to alien functions
862 * fixed some bugs revealed by Paul Dietz' test suite:
863 ** the type-error signalled from WARN has a filled-in DATUM slot.
864 ** the type-error required when a stream is not associated with
865 a file has the stream as its datum.
866 ** type-errors on single-floats on x86-64 no longer have
867 :INVALID-OBJECT as the datum
868 ** the type-errors signalled for invalid function names now have
869 a correct expected type
870 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
871 for structures defined with a :TYPE. Documentation strings for
872 typed structures are no longer immediately discarded
873 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
874 broadcast streams and synonym streams. FILE-LENGTH now also works
875 on broadcast streams.
877 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
878 * incompatible change: the --noprogrammer option, deprecated since
879 version 0.7.5, has been removed. Please use the equivalent
880 --disable-debugger option instead.
881 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
883 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
884 inoperational for a while now) has been completely removed.
885 * null lexical environments are now printed as #<NULL-LEXENV>,
886 significantly reducing the amount of clutter in typical backtraces.
887 * documentation on weak pointers, finalization, and after GC hooks
888 has been added to the manual.
889 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
890 as other specialized array types, is much faster. SUBSEQ and
891 COPY-SEQ on such arrays have also been sped up.
892 * optimization: EQL is now more efficient when at least other argument
893 is known to be of type (OR FIXNUM (NOT NUMBER)).
894 * fixed bug: the runtime is now less vulnerable to changes in the
895 size of the SBCL object on OS X, and virtual memory is reserved for
896 all spaces that need to be at a fixed address.
897 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
898 * fixed bug: finalizers and after GC hooks that cause consing are now
900 * fixed bug: compiler error messages and summaries are now printed to
901 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
902 * fixed inference of the upper bound of an iteration variable.
903 (reported by Rajat Datta).
904 * fixed bug 211e: calling local functions with duplicated constant
905 keyword argument no longer causes a bogus style warning about an
907 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
908 ftype declaration to be disregarded. (reported by Dave Roberts)
909 * fixed bug 373: caused by erronous compilation of references to alien
910 variables in the runtime on ppc/darwin.
911 * fixed bug 376: CONJUGATE type deriver.
912 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
913 (reported by Baughn on #lisp)
914 * a cross-compiler bug on non-x86 platforms has been identified and
915 fixed. (thanks to Bruno Haible)
916 * improvements to the MIPS runtime code for increased stability.
917 (thanks to Thiemo Seufer)
918 * increased the maximimum compact environment size to allow
919 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
920 * partial workaround for bug 135: don't name the function we're
921 calling for hairy cases of EVAL, so as not to accumulate one environment
922 entry per call to EVAL. (reported by Kevin Reid)
923 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
924 * optimization: type testing for non-vector arrays should be faster.
925 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
927 * bug fix: setting 31st element of a bit vector to zero did not work
929 * bug fix: redefining a class definition which failed due to a
930 previous accessor / function clash now works (but see BUGS entry
931 #380 for more problems in this area). (thanks to Zach Beane)
932 * the long form of DEFINE-METHOD-COMBINATION disables method group
933 checking when given a single method group with pattern *. (thanks
935 * on x86 compiler supports stack allocation of results of simple
936 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
937 * support for building and running on Mac OS X 10.4 "Tiger" has been added
938 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
939 * fixed some bugs related to Unicode integration:
940 ** the restarts for recovering from input and output encoding
941 errors only appear when there is in fact such an error to
943 * fixed some bugs revealed by Paul Dietz' test suite:
944 ** MISC.549 and similar: late transformation of unsafe type
945 assertions into derived types caused unexpected code
947 ** SCALE-FLOAT type deriver is less wrong.
948 ** type derivers for EXP, LOG and similar functions compute result
949 types for complex arguments better.
950 ** (MISC.563) CONJUGATE type deriver works for very restricted
952 ** out-of-line type testers for character strings are available.
953 ** EQUAL compiler transform understands specialness of objects
955 ** accessing double-floats stored on the stack now works on x86-64.
956 ** debugger internals could sometimes create invalid lispobjs,
957 resulting in GC crashes.
958 ** MISC.548: type check weakening can convert required type into
960 ** initialization forms for bindings are not in scope of free special
963 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
964 * incompatible change: thread support for non-NPTL systems has
965 been removed - locking is buggy and unreliable. A threaded
966 SBCL build will now warn at startup and refuse to create
967 new threads, unless futex support is detected in the kernel
968 * incompatible change: the top level REPL now has only an ABORT
969 restart associated with it, not TOPLEVEL and ABORT as it used to.
970 TOP and TOPLEVEL are now available as debugger commands for
971 returning to the top level.
972 * incompatible change: forms evaluated in the REPL now use the
973 global optimization policy.
974 * incompatible change: user- and system-initialization files are
975 no longer processed with LOAD, but by READ and EVAL; hence the
976 global optimization policy, startup package, readtable, etc,
978 * The .fasl file format number has been incremented because of
979 various incompatible changes.
980 * internal entry point details and argument counts no longer appear
981 in backtraces unless explicitly requested by setting
982 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
983 * built-in and standard functions no longer have names like "top
984 level local call to FOO".
985 * fixed bug 32: functions defined in non-null lexical environments
986 now have more legible printed representation
987 * fixed bug 33: functions defined in non-null lexical environemnts
988 are now more amenable to inspection by INSPECT.
989 * workaround for bug 354: XEPs no longer appear in backtraces unless
990 explicitly requested.
991 * fixed bug: receiving the signal which results from attempting to
992 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
993 SIGBUS on other *BSDs) on architectures where the C stack is also
994 the Lisp stack (x86 and x86-64) from foreign code no longer leads
995 to debugger confusion or wild instability. (reported by Cheuksan
997 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
998 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
999 (reported by Lutz Euler)
1000 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1001 compiled code. (reported by Paul Dietz)
1002 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1003 specialized parameter to a method to something that is not TYPEP
1004 the specializer is now possible.
1005 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1006 face of package deletion.
1007 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1008 pathname. (reported by David Tolpin on c.l.l)
1009 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1010 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1011 STRING-STREAM and FILE-STREAM, respectively.
1012 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1013 than previously; in addition, its test suite is now run on build.
1014 (thanks to Luke Gorrie)
1015 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1016 * optimization: added a immediate representation for single-floats
1018 * fixed some bugs revealed by Paul Dietz' test suite:
1019 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1020 ** attempting to create a package with a colliding nickname causes
1021 correctable errors to be signalled.
1022 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1023 ** several x86-64 backend bugs related to sign-extension of immediate
1026 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1027 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1028 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1030 * fixed loading of multiply forward-referenced layouts.
1031 (thanks to Cheuksan Wang)
1032 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1033 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1034 (see COMPILE-FILE documentation for details of :PRINT option)
1035 * fixed bugs 19 and 317: fixed-format floating point printing is
1036 more accurate. This also fixes a bug reported by Adam Warner
1037 related to the ~@F format directive.
1038 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1040 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1041 dispatch table if the from-char is a dispatch macro character.
1042 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1043 by the wordsize no longer ignore the last word. (reported by Lutz
1045 * fixed bug in type checking of dynamic-extent variables. (reported
1047 * optimization: sequence traversal functions use their freedom to
1048 coerce function designators to functions.
1049 * optimization: code with many calls to CLOS methods specialized on
1050 CLOS classes has had redundant type checks removed.
1051 * optimization: added declarations to speed up operations that access
1052 the internal character database (for example STRING-UPCASE)
1053 * optimization: comparison operations between floats and sufficiently small
1054 fixnums no longer create extra rationals
1055 * fixed some bugs related to Unicode integration:
1056 ** portions of multibyte characters at the end of buffers for
1057 character-based file input are correctly transferred to the
1058 start of the buffer at the next read.
1059 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1060 passing it through to OPEN.
1061 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1062 argument given to internal calls to OPEN.
1063 ** the built-in comment readers (introduced by character sequences
1064 ";" and "#|") are more forgiving to encoding errors; they will
1065 STYLE-WARN and then attempt to resync the stream at a character
1066 boundary. (thanks to Teemu Kalvas)
1067 * fixed some bugs in the x86-64 port:
1068 ** Negative short int return values from c-calls are sign-extended
1070 ** The stack is aligned to 16-bytes for c-calls, as required by
1071 the ABI. (thanks to Cheuksan Wang)
1072 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1073 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1074 for enums. (thanks to Vincent Arkesteijn)
1075 ** Multiple small optimizations and bugfixes for floating point
1077 * fixed some bugs revealed by Paul Dietz' test suite:
1078 ** Space, Tab, Linefeed, Return and Page have the invalid
1079 secondary constituent character trait.
1080 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1082 ** WITH-INPUT-FROM-STRING should only update the index place on
1084 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1085 works more reliably.
1086 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1087 with one-dimensional arrays with fill pointers.
1088 ** TYPE-OF failed on a complex with an integer realpart and a
1090 ** compiler failure during type inference for the code of form
1091 (IF (EQL X (THE ...)) ...) (MISC.535).
1093 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1094 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1095 platform. The port supports 61-bit fixnums, large memory spaces
1096 and reloading shared object files.
1097 * enhancement: saving cores with foreign code loaded is now
1098 supported on ppc/Darwin in addition to the previously supported
1100 * enhancement: the statistical profiler now walks deeper into the
1101 call stack for more meaningful call-graphs and accrued time
1102 reports (x86/x86-64 only). It also now reports time spent in
1104 * enhancement: it is now possible to trace most individual methods
1105 of a generic function in addition to tracing the generic function
1107 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1109 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1110 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1111 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1112 produces an error. (thanks to Vincent Arkesteijn)
1113 * bug fix: NAMESTRING on pathnames with :WILD components in their
1114 directories works correctly. (thanks to Artem V. Andreev)
1115 * fixed bug 125: compiler preserves identity of closures. (reported
1117 * bug fixed: functions with &REST arguments sometimes failed with
1118 "Undefined function" when compiled with (DEBUG 3). (reported by
1120 * bug fix: overflow during compiling of setting element of a bit
1121 vector with constant index and value. (reported by Timmy Douglas)
1122 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1123 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1124 * on x86 compiler partially supports stack allocation of dynamic-extent
1126 * GO and RETURN-FROM do not check the extent of their exit points
1127 when compiled with SAFETY 0.
1128 * fixed some bugs related to Unicode integration:
1129 ** encoding and decoding errors are now much more robustly
1130 handled; it should now be possible to recover even from invalid
1131 input or output to the terminal. (thanks to Teemu Kalvas)
1132 ** provided a first cut at implementing STRING-TO-OCTETS and
1133 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1134 ** altered the SB-MD5 contributed module slightly, changing the
1135 interface just enough for it to be supportable for builds where
1136 lisp characters are not eight bits.
1137 * fixed some bugs revealed by Paul Dietz' test suite:
1138 ** the FORMATTER-generated functions for ~V[ conditionals require
1139 the correct number of arguments.
1140 ** READ-FROM-STRING returns the mandated second value when applied
1141 to displaced strings.
1142 ** the #\Rubout and #\Backspace characters are treated as invalid
1143 constituent characters by the tokenizer.
1145 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1146 * new feature: reloading changed shared object files with
1147 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1148 * new feature: references to foreign variables and functions
1149 can now be compiled and loaded before the corresponding shared
1150 object file is loaded, as long as the foreign definitions are
1151 available at runtime.
1152 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1153 supported. (thanks to Dan Debertin)
1154 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1155 just keywords. (thanks to Vincent Arkesteijn)
1156 * fixed bug #331: structure-class instances corresponding to
1157 DEFSTRUCT forms are now created eagerly.
1158 * fixed bug #345: backtraces from calls to undefined functions work
1159 on x86 as well. Related bug #61 is now also partially fixed on x86
1160 (backtraces from throws to unknown catch tags.)
1161 * bug fix: lambda-list parsing is now stricter vrt. order and number
1162 of lambda-list keywords.
1163 * bug fix: as specified by AMOP, an error is signalled if a
1164 class-option appears multiple times in a DEFCLASS form. (reported
1166 * bug fix: RANDOM can be compiled when the compiler derives the type
1167 of its numeric argument as a disjoint set of small integers.
1168 (reported by Paul Dietz)
1169 * bug fix: starting a core saved with shared objects loaded when
1170 those objects are not available no longer causes threaded SBCL to
1171 hang. (reported by Sean Ross)
1172 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1174 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1175 argument, which must always be NIL. (reported by Kalle Niemitalo)
1176 * bug fix: printing 1.0d+23 no longer results in an error.
1177 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1178 * bug fix: structure slot setters preserve evaluation order. (thanks
1180 * fixed some bugs related to Unicode integration:
1181 ** RUN-PROGRAM can allow its child to take input from a Lisp
1182 stream. (reported by Stefan Scholl)
1183 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1184 locales. (reported by Ken Causey)
1185 * fixed some bugs revealed by Paul Dietz' test suite:
1186 ** INCF, DECF and REMF evaluate their place form as specified in
1188 ** FORMATTER expands ~{ ~} iteration directives with V or #
1189 parameters correctly.
1190 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1191 consequent uses no arguments correctly.
1192 ** the system has a partial understanding of the (COMPLEX RATIO)
1194 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1197 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1198 * new feature: a build-time option (controlled by the :SB-UNICODE
1199 keyword feature, enabled by default) for building the system with
1200 support for the entire 21-bit character space defined by the
1202 * new feature: the system now has rudimentary external-format
1203 support; the primary user-visible change at this time is that
1204 characters with the high bit set (such as lower-case-e-acute) will
1205 print correctly to a terminal in a UTF-8 environment.
1206 * minor incompatible change: BASE-CHAR no longer names a class;
1207 however, CHARACTER continues to do so, as required by ANSI.
1208 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1209 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1210 has been moved to the SB-EXT package (temporarily re-exported from
1212 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1213 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1215 * fixed bug #351: better error-handlind and reporting for malformed
1217 * fixed bug #350: bignum-printing is now more memory-efficient,
1218 allowing printing of very large bignums, eg. (expt 2 10000000).
1219 (reported by Bruno Haible)
1220 * fixed bug #302: better primitive-type selection for intersection
1222 * fixed bug #308: non-graphic characters now all have names, as
1223 required. (reported by Bruno Haible)
1224 * bug fix: redefining a class with different superclasses now correctly
1225 removes it from the direct-subclasses of its previous superclasses.
1226 (reported by David Morse)
1227 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1228 new value now works. (reported by Bruno Haible)
1229 * bug fix: correct canonicalization of multiple non-standard slot
1230 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1231 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1232 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1233 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1234 now exists, an signals an error.
1235 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1236 during macroexpansion for non-iteration variables as well. (reported
1237 by Bruno Haible for CMUCL)
1238 * bug fix: Cyclic structures and unprintable objects in compiler
1239 messages no longer cause errors. (reported by Bruno Haible)
1240 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1241 and READ-FROM-STRING all now return a primary value of NIL if
1242 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1243 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1244 (reported by Bruno Haible for CMUCL)
1245 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1246 do not designate a condition. (reported by Bruno Haible for
1248 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1249 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1250 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1251 permitting resolution in favour of any of the conflicting symbols.
1252 (reported by Bruno Haible for CMUCL)
1253 * bug fix: EQUAL compiler optimizations is less aggressive on
1254 strings which can potentially compare true despite having distinct
1255 specialized array element types.
1256 * bug fix: unit enumerations can be defined without dividing by
1257 zero. (thanks to Vincent Arkesteijn)
1258 * FORMAT compile-time argument count checking has been enhanced.
1259 (report from Bruno Haible for CMUCL)
1260 * a partial workaround for the bug 262: the compiler does not try to
1261 inline-expand a local function doing RETURN-FROM from a deleted
1262 BLOCK. (thanks to Peter Denno for the bug report and to David
1263 Wragg for the simple test case)
1264 * fixed some bugs revealed by Paul Dietz' test suite:
1265 ** RENAME-PACKAGE allows all package designators as new package
1267 ** constraint propagation and lambda variable substitution are
1268 more cautious in dealing with partially deleted code.
1269 ** compiler sometimes lost reoptimization passes.
1270 ** CERROR, given a condition as condition designator, passes its
1271 remaining arguments to the continue format control without
1273 ** Case-altering FORMAT directives work correctly on non-ASCII
1275 ** The REAL type specifier handles bounds outside the floating
1276 point ranges without signalling FLOATING-POINT-OVERFLOW.
1277 ** Functions with IR1-transformations can create intercomponent
1278 references to global functions.
1279 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1281 ** FORMAT ~R treats a nil value for its first parameter correctly.
1283 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1284 * enhancement: saving cores with foreign code loaded is now
1285 supported on x86/NetBSD and sparc/Linux in addition to the previously
1286 supported platforms.
1287 * bug fix: on some platforms repeated installations caused multiple
1288 copies of HTML documentation to be installed -- should not happen
1289 any more. (reported by Stefan Scholl)
1290 * bug fix: parsing self-recursive alien record types multiple times
1291 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1292 original patch by Helmut Eller for CMUCL)
1293 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1294 (thanks to Richard Kreuter)
1295 * bug fix: defining classes whose accessors are methods on existing
1296 generic functions in other (locked) packages no longer signals
1297 bogus package lock violations. (reported by François-René Rideau)
1298 * bug fix: special variables as DEFMETHOD parameters no longer have
1299 associated bogus type declarations. (reported by David Wragg and
1301 * bug fix: read-write consistency on streams of element-type
1302 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1303 * bug fix: redefiniton of the only method of a generic function with
1304 no DEFGENERIC no longer emits a full WARNING. In addition,
1305 redefinition of generic functions with no DEFGENERIC to an
1306 incompatible lambda list now signals an error. (thanks to Zach
1308 * bug fix: DEFGENERIC now works even when there's a function of the
1309 same name in an enclosing lexical environment. (thanks to Zach
1311 * fixed compiler failure, caused by instrumenting code during
1312 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1313 * optimization: added loop analysis and improved register allocation
1314 * fixed some bugs revealed by Paul Dietz' test suite:
1315 ** POSITION on displaced vectors with non-zero displacement
1316 returns the right answer.
1317 ** (SIMPLE-STRING) is a valid type specifier for sequence
1319 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1321 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1322 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1324 ** The justification version of the FORMAT ~< directive treats
1325 non-zero minpad parameter correctly.
1327 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1328 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1329 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1330 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1331 the supported interface.
1332 * new feature: Single-stepping of code compiled with DEBUG 2 or
1333 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1334 * new feature: saving cores with foreign code loaded is now
1335 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1336 Timothy Moore's work for CMUCL)
1337 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1338 parameters to * instead of NIL if no initform is supplied.
1339 (reported by Johan Bockgaard)
1340 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1341 correctly when FUNCALL appears as the car of the form. Note:
1342 despite this FUNCALL forms are not currently subject to
1343 compiler-macro expansion. (port of Raymond Toy's fix for the
1344 same from CMUCL, reported by Johan Bockgaard)
1345 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1346 (thanks for Teemu Kalvas)
1347 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1348 case instead of terminating the iteration (thanks for Julian
1349 Squires, Sean Champ and Raymond Toy)
1350 * bug fix: incorrect expansion of defgeneric that caused a style
1351 warning. (thanks for Zach Beane)
1352 * bug fix: slot accessor effective method computation works properly
1353 for classes with multiple non-standard applicable methods on
1354 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1355 * on x86 compiler supports stack allocation of results of LIST and
1356 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1357 CMUCL implementation by Gerd Moellmann)
1358 * fixed some bugs revealed by Paul Dietz' test suite:
1359 ** FORMAT strings with both the ~<~:;~> form of the justification
1360 directive and pretty-printing directives cause an error.
1362 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1363 * incompatible change: the internal functions
1364 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1365 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1366 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1367 instead of the old functions.
1368 * new feature: on platforms where "dladdr" is available foreign
1369 function names now appear in backtraces. (based on Helmut Eller's
1371 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1372 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1374 * documentation: ASDF manual is now distributed with SBCL.
1375 * bug fix: SBCL can now load its contributed modules with REQUIRE
1376 even if the system-provided entries have been removed from
1377 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1379 * bug fix: backtraces involving undefined functions or assembly
1380 routines are more informative. (thanks to Brian Downing)
1381 * bug fix: mutually referent alien structures now work correctly.
1382 (reported by Rick Taube)
1383 * bug fix: structures defined by WITH-ALIEN can be referred to
1384 within other definitions in the same WITH-ALIEN.
1385 * bug fix: division operators (MOD, TRUNCATE and the like) with
1386 constant zero divisors and integer dividends no longer generate
1388 * bug fix: provide default methods for INPUT-STREAM-P and
1389 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1390 * bug fix: improve the detection and resolution of MOP metacycles
1391 (where effective method computation depends on the generic function
1392 having its effective method computed). (reported by Bruno Haible)
1393 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1394 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1395 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1396 * bug fix: pathnames with relative directory components can be
1397 represented relative to default pathnames.
1398 * optimization: in taking the GCD of bignums, reduce the two bignums
1399 to approximately the same size (using Euclid's algorithm) before
1400 applying the more sophisticated binary GCD. (thanks to Juho
1402 * optimization: COUNT on bitvectors now operates word-at-a-time.
1403 * optimization: ASH with a positive, but not necessarily constant,
1404 (leftwards) shift, when in a modular context, is compiled to a
1406 * fixed some bugs revealed by Paul Dietz' test suite:
1407 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1408 if the corresponding argument is NIL.
1409 ** FORMAT directives accepting a minpad parameter treat negative
1411 ** literal commas as character parameters to FORMAT directives are
1413 ** literal spaces directly after ~<Newline> directives within a
1414 format-logical-block (~:< ~@:>) do not induce :FILL-style
1415 conditional newlines.
1416 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1417 as specified: it no longer includes conditional newlines).
1418 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1420 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1421 :PER-LINE-PREFIX argument does not evaluate to a string.
1423 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1424 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1425 the manual for details; for now, package locks can be disabled by
1426 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1427 if no major problems are found then it is likely that they will be
1428 compiled in unconditionally.
1429 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1430 unsupported operators on all platforms. To load a shared library
1431 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1432 object file, link it into a shared library outside of SBCL and
1433 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1435 * bug workaround: ROOM T and the GC were not working together
1436 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1437 reporting facility aren't preserved. That reporting has been
1438 disabled, so now until and unless someone figures out how to make it
1439 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1440 * minor incompatible change: as threatened around sbcl-0.8.0, the
1441 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1442 The symbols are also exported from SB-PCL for backwards
1443 compatibility, but more so than before SB-PCL should be treated as
1444 an implementation-internal package.
1445 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1447 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1448 It is known as of this release not to work on the Alpha, however.
1449 * fixed bug #167: errors signalled due to illegal syntax in method
1450 bodies are now more legible.
1451 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1452 designators and can hence be used with TYPEP.
1453 * fixed bug #333: CHECK-TYPE now ensures that the type error
1454 signalled, if any, has the right object to be accessed by
1455 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1456 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1457 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1459 * fixed bug #334: programmatic addition of slots using specialized
1460 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1461 and :ALLOCATION :CLASS slots.
1462 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1463 float exponents. (rereported by Peter Seibel)
1464 * fixed a bug: #\Space (and other whitespace characters) are no
1465 longer considered to be macro characters in standard syntax by
1466 GET-MACRO-CHARACTER.
1467 * fixed bug: initialization of condition class metaobjects no longer
1468 causes an instance of the condition to be created. (reported by
1470 * fixed bug: it is now possible to have slots such that
1471 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1472 description is neither :INSTANCE nor :CLASS.
1473 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1474 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1475 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1476 non-standard SLOT-DEFINITION-ALLOCATION values.
1477 * fixed bugs: various race conditions handling exiting threads.
1478 CL-PPCRE's thread torture test now passes.
1479 * fixed arguably-a-bug: GC time proportional to number of threads in
1480 system even when most of them are idle
1481 * optimization: improved performance of BIT and SBIT on bit-vectors.
1482 * .fasl file incompatibility: The fasl file version number has
1483 been incremented because of changes associated with package locks.
1485 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1486 * minor incompatible change: the system no longer provides
1487 optimization hints (conditions which are TYPEP
1488 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1489 mode; these hints are still emitted when higher SPEED optimization
1491 * new contrib module: a sampling profiler (profiling by statistical
1492 sampling, rather than by instrumenting functions) is available as
1493 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1494 * the behaviour of the standard function ED is now customizeable by
1495 third parties through a hook variable: see ED's documentation
1496 string for information on the protocol.
1497 * the compiler no longer emits efficiency notes for (FUNCALL X)
1498 when the type of X is uncertain under default optimization
1500 * fixed bug 276: mutating a binding of a specialized parameter to a
1501 method to something that is not TYPEP the specializer is now
1503 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1504 exhibit the required behaviour on the x86 platform. (thanks to
1505 Peter van Eynde, Eric Marsden and Bruno Haible)
1506 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1507 even for difficult arguments. (reported by Peter Graves)
1508 * fixed bug 141a: the backquote printer now descends quoted
1510 * fixed another bug in backquote printing: no more destructive
1511 modification of the form's list structure. (reported by Brian
1513 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1514 move between its address being taken and the call to
1515 interrupt_thread, fixing a crashing race condition.
1516 * the SB-POSIX contrib implementation has been adjusted so that it
1517 no longer exhibits ridiculously poor performance when constructing
1518 instances corresponding to C structs.
1520 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1521 * minor incompatible change: the sb-grovel contrib now treats C
1522 structures as alien (in the sense of SB-ALIEN) objects rather than
1523 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1524 has implications for memory management of client code
1525 (sb-grovel-returned objects must now be manually managed) and for
1526 type safety (alien objects now have full types).
1527 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1528 used to control emission of compiler diagnostics, rather than the
1529 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1530 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1531 quality should be considered deprecated.
1532 * install.sh now installs the user manual as well
1533 * (not quite a new documentable feature, but worth considering in
1534 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1535 beginnings of a semantically meaningful condition hierarchy is
1536 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1538 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1539 designator as the defaults argument.
1540 * fixed bug: Displaced arrays whose displaced-to array has become
1541 too small now cause ARRAY-DIMENSION to signal an error, providing
1542 for safer bounds-checking. (reported by Bruno Haible)
1543 * fixed bug: DEFCLASS slot definitions with identical :READER and
1544 :WRITER names now signal a reasonable error. (reported by Thomas
1546 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1548 * fixed bug: Invalid slot specification errors now print correctly.
1549 (thanks to Zach Beane)
1550 * fixed bug 320: Shared to local slot value transfers in class
1551 redefinitions now happen corrently from superclasses as
1552 well. (reported by Bruno Haible)
1553 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1555 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1556 improper lists correctly. (reported by Bruno Haible)
1557 * fixed bug 313: source-transform for <fun-name> was erroneously
1558 applied to a call of a value of a variable with name <fun-name>.
1559 (reported by Antonio Menezes Leitao)
1560 * fixed bug 307: The obsolete instance protocol ensures that
1561 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1562 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1563 remove dead unknown-values globs from the middle of the stack.
1564 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1565 easier to resume long computations after using *BREAK-ON-SIGNALS*
1566 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1567 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1568 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1569 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1570 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1571 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1573 * fixed a (fairly theoretical) bug in string printing: if
1574 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1575 does not have array-element-type equal to the most general string
1577 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1578 function name. (thanks to Nikodemus Siivola)
1579 * fixed bug: compile-time format string checker failed on
1580 non-closed ~{. (reported by Thomas F Burdick)
1581 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1582 don't warn on legal loop code involving more than one aggregate
1583 boolean. (thanks to Nikodemus Siivola)
1584 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1585 in keyword position to MAKE-PACKAGE was not being reported as
1587 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1588 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1590 * fixed bugs 280 and 312: the checking for multiple definitions in a
1591 file is less likely to become confused by uses of inline
1593 * fixed bug: the #S reader macro performs the keyword coercion
1594 specified for slot names. (reported by Kalle Niemitalo)
1595 * fixed bug: lambda lists may contain symbols whose names start with
1596 & but are not lambda-list-keywords; their occurrence triggers a
1598 * fixed bug 321: define-method-combination argument lambda lists do
1599 not cause invalid code to be generated when &optional or &aux
1600 variables have default values. (reported by Bruno Haible)
1601 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1602 have CLOS classes; this appears also to have fixed reported
1603 instability in stack exhaustion detection.
1604 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1605 MUFFLE-WARNING when no associated restart is present is now
1607 * optimization: rearranged the expansion of various defining macros
1608 so that each expands into only one top-level form in a
1609 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1611 * optimization: used a previously little-used slot in symbols to
1612 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1614 * fixed some bugs revealed by Paul Dietz' test suite:
1615 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1617 ** Fixed an optimization bug related to inheritance of initforms
1618 from local to shared slots.
1619 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1620 ** CAST optimizer forgot to flush argument derived type.
1621 ** print/read consistency on floats is now orders of magnitude
1622 more likely. (thanks also to Bruno Haible for a similar report
1624 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1625 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1626 for objects of type REAL. Make it so.
1627 ** SXHASH is specified (infelicitously) to respect similarity,
1628 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1629 it so. (thanks to Markus Ziegler)
1630 ** on the Alpha, the compiler succeeds in compiling functions
1631 returning a known number of arguments greater than 63.
1632 ** fixed handling of invalid NIL arguments in keyword position
1634 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1636 ** provided a readably-printable representation for RANDOM-STATE
1638 ** ensured that pathnames, where they have a namestring, always
1639 print using #P"..." syntax.
1641 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1642 * Support for the forthcoming 2.0 version of the NetBSD kernel
1643 running on x86 hardware has been added. (thanks to Perry
1644 E. Metzger most immediately, and others for their past work)
1645 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1646 current release version; SBCL's OpenBSD support had been broken
1647 since about the time of OpenBSD's switch to ELF binary format.)
1648 * [placeholder for DX summary]
1649 ** user code with &REST lists declared dynamic-extent, under high
1650 speed or space and low safety and debug optimization policy.
1651 * The manual has been converted to Texinfo format and the debugger
1652 chapter from the cmucl manual has been added.
1653 * A facility has been added to extract documentation strings from
1654 sbcl and store them as Texinfo-formatted snippets for inclusion in
1655 the manual (via Texinfo's @include directive)
1656 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1657 the test case to Dave Roberts)
1658 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1659 pointers. (reported by Sean Ross)
1660 * bug fix: PROFILE output is printed nicely even for large numerical
1661 values. (thanks to Zach Beane)
1662 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1663 greater than 32 handle EOF correctly.
1664 * bug fix: on X86 an immediate argument of the IMUL instruction is
1665 correctly printed in disassembly. (thanks to Lutz Euler)
1666 * bug fix: class slots in redefined classes preserve their old
1667 values. (thanks to Bruno Haible and Nikodemus Siivola)
1668 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1669 succeeds. (reported by Marco Baringer)
1670 * fixed some bugs revealed by Paul Dietz' test suite:
1671 ** READ-SEQUENCE now works on ECHO-STREAMs.
1672 ** RATIONALIZE works more according to its specification. (thanks
1675 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1676 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1677 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1678 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1679 should matter to you only if you rebind the printer control
1680 variables and then find you want different bindings in the
1681 debugger than in the ordinary execution of your program.)
1682 * The runtime build system has been tweaked to support building
1683 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1684 assembler and linker. (thanks to Nikodemus Siivola)
1685 * Unbound, undefined, undeclared variables now trigger full
1686 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1687 more often programmer error than deliberate exploitation of undefined
1689 * optimization: the hash algorithm for strings has changed to one
1690 that is less vulnerable to spurious collisions. (thanks to Juho
1692 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1693 needless bounds checking. (thanks to Juho Snellman)
1694 * optimization: implemented multiplication as a modular
1695 (UNSIGNED-BYTE 32) operation on the PPC backend.
1696 * fixed some bugs revealed by Paul Dietz' test suite:
1697 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1699 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1700 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1701 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1703 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1705 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1707 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1708 their output stream on EOF from read.
1709 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1710 have been read to end-of-file.
1711 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1713 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1714 description of determination of which consecutive characters
1716 ** Printing the "Space" character with escaping on now yields "#\\ ",
1717 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1718 ** Reading floating-point numbers with *READ-BASE* set to a number
1719 less than 10 works correctly.
1720 ** Reading floating-point numbers with *READ-BASE* set to a number
1721 more than 10 works correctly.
1722 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1723 the readtable currently in effect.
1725 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1726 * minor incompatible change: parsing of namestrings on a physical
1727 (Unix) host has changed; numbers after the final #\. in a
1728 namestring are no longer interpreted as a version field. This is
1729 intented to be largely invisible to the user, except that the
1730 meaning of the namestring "*.*.*" has changed: it now refers to a
1731 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1732 should usually be replaced by
1733 (make-pathname :name :wild :type :wild :version :wild)
1734 with the added benefit that this is more likely to be portable.
1735 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1736 option to OPEN now signals an error if the file being opened
1737 exists; this may have an impact on existing code.
1738 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1739 signals received, on the PowerPC platforms (both Linux and
1740 Darwin). (thanks to Pierre Mai for pointing out the location of
1742 * several fixes on OS X: The system now builds and runs cleanly on
1743 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1744 (thanks to Brian Mastenbrook)
1745 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1746 second-resolution: integer multiples of 1/3600 between -24 and 24.
1747 (thanks to Vincent Arkesteijn)
1748 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1749 type when called with 1 argument; PEEK-CHAR checked type of
1750 PEEK-TYPE only after having read first character from a
1751 stream. (reported by Peter Graves)
1752 * bug fix: the garbage collector now has much better locality
1753 behaviour, and in particular no longer treats all memory as being
1754 exhausted when many small objects point to each other in a deeply
1756 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1757 recognized as being TYPEP their class.
1758 * bug fix: the PUSHNEW documentation string has been corrected.
1759 (thanks to Vincent Arkesteijn)
1760 * bug fix: defaulting of the value for the last of an atypically
1761 large number of multiple values being bound was not being
1762 performed correctly on the Alpha or PPC platforms
1763 * optimization: implemented multiplication as a modular
1764 (UNSIGNED-BYTE 32) operation on the x86 backend.
1765 * optimization: SEARCH on simple-base-strings can now be open-coded.
1766 (see also contrib/compiler-extras.lisp for inspiration for
1767 teaching the compiler about the Boyer-Moore algorithm).
1768 * value, returned by MAX (and MIN) called with several EQUALP, but
1769 not EQL, arguments now does not depend on compiler settings.
1770 * fixed some bugs revealed by Paul Dietz' test suite:
1771 ** in stack analysis liveness information is propagated from
1772 non-local entry points.
1773 ** pathwise CAST removing failed when the CAST node did not start
1775 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1776 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1778 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1779 host is already defined.
1780 ** RENAME-FILE works on streams instead of signalling an internal
1782 ** PEEK-CHAR uses the current readtable when determining whether
1783 or not a character is whitespace.
1784 ** MERGE-PATHNAMES handles the case when the pathname does not
1785 specify a name while the default-pathname specifies a version.
1786 ** Pathnames now stand a better chance of respecting print/read
1788 ** Attempting to use standardized file system operators with a
1789 pathname with invalid :DIRECTORY components signals a
1791 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1793 ** DIRECTORY on logical pathnames is more correct.
1794 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1795 signal a TYPE-ERROR if their argument is not a stream.
1796 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1797 designator argument does not designate a stream.
1798 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1799 examining the synonym.
1800 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1802 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1803 element-type larger than ([UN]SIGNED-BYTE 32).
1805 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1806 * When built with the :SB-FUTEX feature, threaded builds now take
1807 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1808 for faster/more reliable mutex and condition variable support.
1809 * Incompatible change (but one you probably shouldn't have been using
1810 anyway): the interface and code for arbitrating between multiple
1811 threads in the same user session has been redesigned.
1812 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1813 error when called without an explicit environment argument.
1814 (thanks to Nikodemus Siivola)
1815 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1816 confused about their position. (thanks to Adam Warner and Gerd
1818 * bug fix: Pretty printing backquoted forms with unquotations in the
1819 argument list position of various code constructs such as LAMBDA
1820 now works correctly. (reported by Paul Dietz)
1821 * bug fix: Pretty printing unquotations no longer loses all
1822 stream position information.
1823 * optimization: performance of string output streams is now less
1824 poor for multiple small sequence writes.
1825 * optimization: performance of CSUBTYPEP in the presence of complex
1826 expressions involving CONS and NOT many times has been improved.
1827 (reported by Paul Dietz)
1828 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1830 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1831 streams for the REPL, for the debugger, and so on. (thanks to
1833 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1834 * fixed some bugs revealed by Paul Dietz' test suite:
1835 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1836 is ignored if it is too small, rather than propagating through
1837 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1838 ** extremely complex negations of CONS types were not being
1839 sufficiently canonicalized, leading to inconsistencies in
1841 ** VALUES tranformer lost derived type.
1843 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1844 * fixed a bootstrapping bug: the build process no longer assumes
1845 that the various BOOLE-related constants have the same value in
1846 host and target lisps. (noted by Paul Dietz' test suite on an
1847 SBCL binary built from CLISP)
1848 * The system can now be dynamically linked on the MIPS platform,
1849 which enables dynamic loading of foreign code from Lisp. (thanks
1850 to Ralf Baechle for discussions on the MIPS ABI)
1851 * The system now records debugging information for its own source
1852 files in a filesystem-position-independent manner, relative to
1853 the "SYS" logical host.
1854 * fixed a compiler bug: MV-LET convertion did not check references
1855 to the "max args" entry point. (reported by Brian Downing)
1856 * tweaked disassembly notes to be less confident about proclaiming
1857 some instruction as an LRA. (thanks to Brian Downing)
1858 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1859 now each have their own history, command character, and other
1860 characteristics. (thanks to David Lichteblau)
1861 * fixed some bugs revealed by Paul Dietz' test suite:
1862 ** compiler failure in compiling LOGAND expressions including a
1864 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1865 shift greater than 32.
1866 ** FLUSH-DEST did not mark blocks for type check regeneration.
1867 ** HANDLER-CASE failed to accept declarations in handler clauses
1868 in some circumstances.
1870 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1871 * New code in contrib/sb-introspect (still probably not entirely
1872 stable yet) provides some support for smart Lisp development
1873 environments like SLIME.
1874 * The conditions signalled for errors occurring when loading .fasl
1875 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1876 in a way which should help ASDF recover gracefully.
1877 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1878 stuff has been cleaned up. If you code contrib/ stuff, this might
1879 affect you, and you can look at contrib/README, contrib/STANDARDS,
1880 and/or the 0.8.4.27 diff to check.
1881 * In full calls the compiler now does not generate checks for declared
1882 argument types for all arguments.
1883 * various threading fixes
1884 ** and some experimental patches which didn't make it into
1885 the main tree for this release, but which are shipped in
1886 contrib/experimental-thread.patch as a possible fix for some
1887 failures (deadlock, spinning...) in GC-intensive multithreaded
1889 * fixed PPC build problem (source code incompatibility of different
1890 library versions): added offsetof() hackery which attempts to divine
1891 where glibc maintainers put uc_mcontext today
1892 * fixed bug 282: compiler does not trust type assertions while passing
1893 arguments to a full call.
1894 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1895 &OPTIONAL VALUES type parameter.
1896 * fix bug 214: algorithm for noting rejected templates is now more
1897 similar to that of template seletion. (also reported by rydis on
1899 * fixed bug 141b: printing backquoted information readably and prettily
1900 inserts a space where necessary.
1901 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1902 (CHARACTER 10) are now reported as errors, rather than propagated
1903 as unknown types. (reported by piso on #lisp)
1904 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1905 with values NIL and :ERROR. (thanks to Milan Zamazal)
1906 * fixed bug 191c: CLOS now does proper keyword argument checking as
1907 described in CLHS 7.6.5 and 7.6.5.1.
1908 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1909 longer raise an error; further, using a list as a for-as-arithmetic
1910 counter now raises a meaningful error.
1911 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1912 now understood by sequence creation functions such as MAKE-SEQUENCE
1914 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1915 a STRING-INPUT-STREAM.
1916 * compiler enhancement: SIGNUM is now better able to derive the type
1918 * type declarations inside WITH-SLOTS are checked. (reported by
1920 * fixed some bugs revealed by Paul Dietz' test suite:
1921 ** incorrect optimization of TRUNCATE for a positive first
1922 argument and negative second.
1923 ** compiler failure in let-convertion during flushing dead code.
1924 ** compiler failure while deriving type of TRUNCATE on an
1925 interval, containing 0.
1926 ** ASH of a negative bignum by a negative bignum count now returns
1928 ** intersection of CONS types now canonicalizes properly, fixing
1929 inconsistencies in SUBTYPEP.
1931 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1932 * incompatible change: The --disable-debugger command line
1933 option now clobbers the debugger at a more fundamental
1934 level, by redefining #'INVOKE-DEBUGGER instead of by
1935 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1936 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1937 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1938 enter the debugger REPL and then suffer recursive errors
1939 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1940 while under the new system, BREAK in --disable-debugger mode
1941 terminates the system just as an unhandled error would.
1942 * fixed compiler performance when processing loops with a step >1;
1943 * bug fix: DOCUMENTATION now retrieves generic function
1944 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1945 support has been systematized, and now supports the methods
1946 specified by ANSI, along with a default method and a method for
1947 slot documentation. (reported by Nathan Froyd)
1948 * bug fix: effective methods associated with a generic function are
1949 no longer cached over a change of that generic function's method
1950 combination. (reported by Andreas Fuchs)
1951 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1952 names a non-existent directory. (thanks to Andreas Fuchs)
1953 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1954 the PPC platform, lead to stack corruption; this has been fixed.
1955 (reported by Rainer Joswig)
1956 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1957 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1958 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1959 arithmetic in general, is now much more reliable on the PPC
1961 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1962 platform now returns the right answer.
1963 * optimization: restored some effective method precomputation in
1964 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1965 precomputation is now tunable.
1966 * optimization: compiler-internal data structure use has been
1967 reviewed, and changes have been made that should improve the
1968 performance of the compiler by about 20%.
1969 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1970 simple-base-strings and simple-bit-vectors is improved.
1971 * optimization: the optimization of 32-bit logical and arithmetic
1972 functions introduced in version 0.8.3 on the x86 has been
1973 implemented on the mips, ppc and sparc platforms; an
1974 implementation of the same facility, but for 64-bit arithmetic,
1975 has been added for the alpha.
1976 * microoptimization: the compiler is better able to make use of the
1977 x86 LEA instruction for multiplication by constants.
1978 * bug fix: in some situations compiler did not report usage of
1979 generic arithmetic in (SPEED 3) policy.
1980 * bug 145b fix: compiler used wrong type specifier while converting
1981 MEMBER-types to numeric.
1982 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1984 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1985 index argument now works properly on the Alpha platform.
1986 * bug fix: floating point exception treatment on the Alpha platform
1988 * bug fix: FILE-POSITION works much better on string input and
1989 output streams. (thanks to Nikodemus Siivola)
1990 * bug fix: many threading/garbage collection symptoms sorted.
1991 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1992 might be pseudo-atomic.
1993 * internal change: Stopping for GC is now done with signals not
1994 ptrace. GC is now done in whichever thread wanted it, instead of
1996 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1998 * bug fix: result form in DO is not contained in the implicit
2000 * incompatible change: ICR structure is changed; the value part of
2001 CONTINUATION is now called LVAR; corresponding functions are
2002 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2003 * added type deriver for ISQRT (thanks to Robert E. Brown).
2004 * bug fix: better support for loading from the command line when an
2005 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2007 * fixed some bugs revealed by Paul Dietz' test suite:
2008 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2009 ** ROUND and FROUND now give the right answer when given very
2010 small float arguments.
2011 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2013 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2014 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2015 ** LCM should return a non-negative integer.
2016 ** PARSE-INTEGER returned the index of a terminator instead of the
2017 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2018 ** PARSE-INTEGER returned an incorrect index being applied to a
2020 ** LCM with two arguments of 0 returns 0 rather than signalling
2022 ** unsigned addition of a 32-bit constant with the high bit set no
2023 longer causes an internal compiler error on the x86.
2024 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2025 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2026 with negative last argument.
2027 ** byte specifiers with zero size and position no longer cause
2028 an error during type derivation.
2029 ** bignum multiplication on the Alpha platform now returns the
2031 * porting: The system now builds on SuSE AMD64, although it still
2032 generates a 32-bit binary.
2033 * .fasl file incompatibility: The fasl file version number has
2034 been incremented (because of the changes to internal compiler
2035 data structures referred to above).
2037 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2038 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2039 more accurately, on the Darwin kernel running on PowerPC hardware.
2040 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2041 * Compiler code deletion notes now signal a condition of type
2042 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2043 an associated MUFFLE-WARNING restart.
2044 * The compiler now performs limited argument count validation of
2045 constant format strings in FORMAT, and where appropriate in ERROR,
2046 CERROR and WARN. (thanks to Gerd Moellmann)
2047 * New ASDF-INSTALL contrib can be used for automatic download and
2048 installation of third-party Lisp code from CCLAN or other sites
2050 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2051 which forces another thread to execute a function supplied by the
2053 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2054 now accept and act upon their :ELEMENT-TYPE keyword argument.
2055 (reported by Martin Atzmueller, Edi Weitz)
2056 * bug fix: FILE-POSITION now accepts position designators up to
2057 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2058 is the greater. (thanks to Patrik Nordebo)
2059 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2060 Kalle Olavi Niemitalo)
2061 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2062 printable. (reported by Eric Marsden)
2063 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2064 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2065 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2066 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2067 (thanks to Stig Sandoe)
2068 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2069 UNREAD-CHAR now correctly includes the unread character in the
2070 target sequence. (thanks to Gerd Moellmann)
2071 * bug fix in threaded builds: the system can now be suspended and
2072 resumed by shell job control with minimal disruption.
2073 * bug fixes in times and timezones >2038AD
2074 * better handling of "where is GNU make?" problem in build scripts
2075 (thanks to Nikodemus Siivola)
2076 * new optimization: inside a named function any reference to a
2077 function with the same name is considered to be a self-reference;
2078 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2079 optimization quality.
2080 * new optimization on x86: logical functions and + now have
2081 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2082 used when the result is truncated to 32 bits.
2083 * VALUES declaration is partially enabled.
2084 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2085 * fixed some bugs revealed by Paul Dietz' test suite:
2086 ** The system now obeys the constraint imposed by
2087 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2088 types form a lattice under type intersection.
2089 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2090 ** ASSOC now ignores NIL elements in an alist.
2091 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2092 and (1+ MOST-POSITIVE-FIXNUM) answers.
2093 ** The addition of a method with invalid qualifiers to a generic
2094 function does not cause an error to be signalled immediately;
2095 a warning is signalled, and the error is generated only on
2096 calling the generic function.
2097 * changed .fasl file version number, in part to add type codes for
2098 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2099 obscure ANSI requirements
2101 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2102 * fixed bug 148: failure to inline-expand a local function left
2103 garbage, confusing the compiler.
2104 * fixed bugs 3cd: structure slot readers perform type check if the
2105 slot can have an invalid value (i.e. it is either not initialized
2106 or can be written with a less specific slot writer).
2107 * bug fix: the compiler now traps array references to elements off
2108 the end of an array; previously, the bounds checking in some
2109 circumstances could go off-by-one.
2110 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2112 * type declarations for array element types now obey the description
2113 on the CLHS page "Declaration TYPE", as per discussions on
2114 sbcl-help around 2003-05-08. This means that a declaration
2115 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2116 declaration, all references to BAR will be asserted or assumed
2117 (with THE, so dependent on compiler policy) to involve objects of
2118 type FOO. Note that no such declaration is implied in
2119 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2120 * declared types of functions from the "Conditions"
2121 chapter. (reported by Paul Dietz)
2122 * bug fix: CERROR accepts a function as its first argument.
2123 * bug fix: NTH an NTHCDR accept a bignum as index
2124 arguments. (reported by Adam Warner)
2125 * optimization: character compare routines now optimize comparing
2126 against a constant character. (reported by Gilbert Baumann)
2127 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2128 argument now works properly on the MIPS platform.
2129 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2130 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2131 declared to have a functional type, does not cause an error
2133 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2134 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2135 * fixed bug: if last continuation of a deleted block has a
2136 destination, this destination should be deleted too. (reported by
2138 * fixed a bug in the bootstrap process: the host compiler's values
2139 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2140 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2141 test case from Patrik Nordebo)
2142 * improved the ability of the disassembler on the PPC platform to
2143 provide helpful disassembly notes.
2144 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2145 the class in more cases than previously.
2146 * bug fix: FILE-POSITION now understands :START and :END for
2147 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2148 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2149 8) data. (thanks to David Lichteblau)
2150 * bug fix: it is possible to add a method to a generic function
2151 without lambda list.
2152 * bug fix: reader failed to signal END-OF-FILE inside an
2153 object representation. (reported by Nikodemus Siivola)
2154 * fixed some bugs revealed by Paul Dietz' test suite:
2155 ** LAST and [N]BUTLAST should accept a bignum.
2156 ** condition slot accessors are methods.
2157 ** (VECTOR NIL) is a subtype of STRING.
2159 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2160 * minor incompatible change: some nonsensical specialized lambda
2161 lists (used in DEFMETHOD) which were previously ignored now signal
2163 * minor incompatible change: the system is now aware of the types of
2164 variables in the COMMON-LISP package, and will signal errors for
2165 most violations of these type constraints (where previously they
2166 were silently accepted).
2167 * minor incompatible change: COMPILE-FILE now uses the freedom
2168 afforded (ANSI 3.2.2.3) to use derived function types for
2169 functions defined in the same file. This also permits the system
2170 to warn on static type mismatches and function
2171 redefinition. (Currently it does not work with high DEBUG level.)
2172 * minor incompatible change: VALUES declaration is disabled.
2173 * When issuing notes, the compiler now signals a condition of type
2174 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2175 restart for use in user handlers. It is expected that the
2176 COMPILER-NOTE condition will eventually become a condition
2177 supertype to a hierarchy of note types, which will then be
2178 handleable in a similar fashion. However, at the moment, no such
2179 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2180 but it's an implementation detail, not a classification for the
2182 * Changes in type checking closed the following bugs:
2183 ** type checking of unused values (192b, 194d, 203);
2184 ** template selection based on unsafe type assertions (192c, 236);
2185 ** type checking in branches (194bc).
2186 * A short form of VALUES type specifier has ANSI meaning (it has
2187 increased the number of situations when SBCL cannot perform type
2189 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2190 keywords or constants is permissible.
2191 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2192 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2193 classes. (thanks to Antonio Martinez)
2194 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2195 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2196 argument to a pretty-print stream. Instead, it leaves any such
2197 operations to DESCRIBE-OBJECT methods.
2198 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2200 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2201 lambda lists. (thanks to David Lichteblau)
2202 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2203 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2204 (thanks to Gerd Moellmann)
2205 * fixed bug 246: increased compilation speed of long
2206 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2208 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2210 * DEFCONSTANT now throws a condition of type
2211 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2212 constant to a non-EQL value; CONTINUE and ABORT restarts
2213 respectively change and preserve the value.
2214 * fixed bug 63: The code walker, part of the implementation of CLOS,
2215 is now better at handling symbol macros.
2216 * bug fix: There is no longer an internal implementation type named
2217 CL:LENGTH. (reported by Raymond Toy)
2218 * bug fix: In macro-like defining macros/special operators the
2219 implicit block does not enclose the lambda list.
2220 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2221 enclosed in parentheses) are not suitable as type specifiers, and
2222 their use properly signals an error now.
2223 * bug fix: An argument count mismatch for a type specifier in code
2224 being compiled no longer causes an unhandled error at compile
2225 time, but signals a compile-time warning.
2226 * fixed simple vector readable printing
2227 * bug fix: DESCRIBE takes more care over whether the class
2228 precedence list slot of a class is bound before accessing it.
2229 (reported by Markus Krummenacker)
2230 * bug fix: FORMATTER can successfully compile pretty-printer format
2231 strings which use variants of the ~* directive inside.
2232 * bug fix: SEARCH now applies its TEST predicate to the elements of
2233 the arguments in the correct order. (thanks to Wolfhard Buss)
2234 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2235 in type inference. (thanks to Robert E. Brown)
2236 * bug fix: Reading in symbols with an explicit package name of ""
2237 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2238 * fixed some bugs revealed by Paul Dietz' test suite:
2239 ** NIL is now allowed as a structure slot name.
2240 ** Arbitrary numbers, not just REALs, are allowed in certain
2241 circumstances in LOOP for-as-arithmetic clauses.
2242 ** Multiple class redefinitions before slot access no longer
2243 causes a type error.
2244 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2245 association between the name and a class.
2246 ** Generic functions with non-standard method-combination and over
2247 five methods all of which return constants no longer return NIL
2248 after the first few invocations. (thanks to Gerd Moellmann)
2249 ** CALL-NEXT-METHOD with no arguments now passes the original
2250 values of the arguments, even in the presence of assignment.
2251 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2253 ** DISASSEMBLE works with closures and funcallable instances.
2254 ** ADD-METHOD now returns the generic function, not the new method.
2255 ** FIND-METHOD signals an error if the lengths of the specializers
2256 is incompatible with the generic function, even if the ERRORP
2258 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2259 which its argument is a member.
2260 ** DEFCLASS only redefines the class named by its class-name
2261 argument if that name is the proper name of the class;
2262 otherwise, it creates a new class.
2263 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2264 of the UNBOUND-SLOT condition to the name of the slot.
2265 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2266 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2267 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2268 SLOT-MAKUNBOUND in the specified fashion.
2270 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2271 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2272 cross-compilation host. As a consequence, we can now bootstrap our
2273 way up to SBCL starting with a bare gcc toolchain and human-readable
2274 source code (first the source to CLISP, then the source to SBCL).
2275 * A contributed module containing a partial implementation of the
2276 simple-streams interface has been included. (thanks to Rudi
2278 * A contributed module implementing the RFC1321 Message Digest
2279 Algorithm, known as MD5, has been included.
2280 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2281 no longer has any effect, as the code controlled by this feature
2282 has been deleted. (As far as we know, no-one has ever built using
2283 this feature, and its semantics were confused in any case).
2284 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2285 work on conditions (as required by the ANSI specification),
2286 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2287 expected behaviour on conditions. Users should note, however,
2288 that such behaviour is not required by the ANSI specification,
2289 and so use of this behaviour may render their code unportable.
2290 * fixed some bugs revealed by Paul Dietz' test suite:
2291 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2293 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2294 ** SXHASH on condition objects no longer returns NIL.
2295 ** :ALLOCATION :CLASS slots are better treated; their values are
2296 updated on class redefinition, and initforms inherited from
2297 superclasses are applied.
2298 ** REMOVE-METHOD returns its generic function argument even when
2299 no method was removed.
2300 ** SHARED-INITIALIZE now initializes the values of the requested
2301 slots, including those with :ALLOCATION :CLASS.
2302 ** ALLOCATE-INSTANCE now works on structure classes defined via
2303 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2305 ** SLOT-EXISTS-P now works on conditions, as well as structures
2307 ** MAKE-LOAD-FORM now has the required methods on
2308 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2309 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2310 keyword, and now implements the SLOT-NAMES argument.
2311 ** methods with &OPTIONAL arguments no longer allow too many
2312 arguments to be passed in the call without error.
2313 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2314 option is consistent with the required arguments of the generic
2315 function lambda list.
2316 * bug fix: REQUIRE accepts a string designator. (Thanks to
2318 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2319 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2320 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2321 * bug fix: The compiler now checks for duplicated variables in macro
2323 * bug fix: SETQ on globals returns the correct value.
2324 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2325 not a COMPILER-ERROR (followed by some other strange error on
2326 choosing the CONTINUE restart).
2327 * bug fix: make.sh and friends are now more consistent in the way that
2328 they look for GNU "make".
2330 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2331 * experimental native threads support (on x86 Linux >=2.4 only).
2332 This is not compiled in by default: you need to add :SB-THREAD to
2333 the target features. See the "Beyond ANSI" chapter of the manual
2335 * fix for longstanding nonANSIism: The old distinction between
2336 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2337 The return value from CL:FIND-CLASS is now a CLOS class, and
2338 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2339 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2340 * An interface to the MetaObject Protocol, as described in Kiczales,
2341 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2342 MIT Press, 1991, is available from the SB-MOP package.
2343 * incompatible change: the SB-PCL package should now be considered
2344 a private implementation detail, and no longer a semi-private MOP
2346 * minor incompatible change: due to rearrangement for threads, the
2347 control stack and binding stack are now allocated at arbitrary
2348 addresses instead of being hardcoded per-port. Users affected by
2349 this probably have to be doing advanced things with shared
2350 libraries, and will know who they are.
2351 * minor incompatible change: Previously, all --eval forms used were
2352 processed with READ before any of them were processed with EVAL.
2353 Now each --eval form is processed with both READ and EVAL before
2354 the next --eval form is processed. (Thus package operations like
2355 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2356 work as the user might reasonably expect.)
2357 * minor incompatible change: *STANDARD-INPUT* is now only an
2358 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2360 * minor incompatible change: Y-OR-N-P is now character-oriented,
2361 not line oriented. Also, YES-OR-NO-P now works without errors.
2362 (thanks to Antonio Martinez)
2363 * sb-aclrepl module improvements: an integrated inspector, added
2364 repl features, and a bug fix to :trace command.
2365 * Known functions, which cannot be open coded by the backend, are
2366 considered to be able to check types of their arguments. (fixing
2367 a bug report by Nathan J. Froyd)
2368 * fixed a bug in computing method discriminating functions: It is
2369 now possible to define methods specialized on classes which have
2370 forward-referenced superclasses. (thanks to Gerd Moellmann)
2371 * fixed evaluation order in optional entries (reported by Gilbert
2373 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2374 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2375 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2376 required-by-AMOP NAME argument, as well as CLASS and
2377 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2378 * fixed bug 20: DEFMETHOD can define methods using names that are
2379 not the proper names of classes to designate class specializers.
2380 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2381 Unix file descriptors, instead of blowing up. (thanks to Antonio
2383 * Garbage collection refactoring: user-visible change is that a
2384 call to the GC function during WITHOUT-GCING will not do garbage
2385 collection until the end of the WITHOUT-GCING. If you were doing
2386 this you were probably losing anyway.
2387 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2388 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2389 TYPEP the latter but not the former.
2390 * The compiler issues a full WARNING for calls to undefined functions
2391 with names from the CL package.
2392 * MAP-INTO for a vector destination is open coded. (reported by
2393 Brian Downing on c.l.l)
2394 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2395 documentation string.
2396 * fixed some bugs revealed by Paul Dietz' test suite:
2397 ** COPY-ALIST now signals an error if its argument is a dotted
2399 ** Condition slots are now accessed more correctly in the presence
2400 of multiple initargs for a given slot.
2401 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2402 exclude restarts of the same name associated with a different
2404 ** DEFCLASS of forward-referenced classes with another
2405 forward-referenced class in the superclasses list no longer
2407 ** Condition slots are now initialized once each, not multiple
2408 times. (thanks to Gerd Moellmann)
2409 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2411 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2412 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2413 arguments contain duplicated elements.
2414 ** RESTART-CASE understands local macros.
2415 ** RESTART-CASE associates exactly its own restarts with a condition.
2416 ** ENDP in safe mode checks its argument to be of type LIST.
2417 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2418 in question is unbound.
2419 ** Optimized MAKE-INSTANCE functions no longer cause internal
2420 assertion failures in the presence of duplicate initargs.
2421 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2422 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2423 propagated even in the ctor optimized implementation of
2425 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2427 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2428 * a better implementation of SXHASH on (simple) bit vectors,
2429 measured both in execution speed and in distribution of results
2430 over the positive fixnums, has been installed. Likewise, a better
2431 implementation of EQUAL for simple bit vectors is now available.
2432 * fixed CEILING optimization for a divisor of form 2^k.
2433 * fixed bug 240 (emitting extra style warnings "using the lexical
2434 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2435 by Antonio Martinez)
2436 * fixed SXHASH, giving different results for NIL depending on type
2437 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2438 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2439 variable. (found by Rolf Wester)
2440 * SBCL does not ignore type declarations for special
2441 variables. (reported by rif on c.l.l 2003-03-05)
2442 * some bug fixes in contrib/sb-aclrepl/
2443 * fixed some bugs revealed by Paul Dietz' test suite:
2444 ** a bug in the CONS type specifier, whereby the CAR and CDR
2445 types got intertwined, has been fixed;
2446 ** the type system is now able to reason about the interaction
2447 between INTEGER and RATIO types more completely;
2448 ** APPEND, [N]REVERSE and NRECONC check that those their
2449 arguments, which must be proper lists, are really so;
2450 ** An array specialized to be unable to hold elements has been
2451 implemented, as required -- yes, really -- by ANSI;
2452 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2453 on malformed property lists;
2455 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2456 * incompatible packaging change: in line with Unix convention,
2457 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2458 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2459 * REQUIRE and PROVIDE are now optionally capable of doing something
2460 useful. See the documentation string for REQUIRE.
2461 * infrastructure for a managed SBCL contrib system: contributed
2462 modules in this release include:
2463 ** the ASDF system definition facility;
2464 ** an interface to the BSD Sockets API;
2465 ** an ACL-like convenience interface to the repl;
2466 (thanks to Kevin Rosenberg)
2467 ** an implementation of ROTATE-BYTE, with efficient implementation
2469 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2470 gives a closer approximation to the right answer than previously.
2471 (thanks to Raymond Toy)
2472 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2473 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2474 optional environment arguments, as required by ANSI.
2475 * fixed bugs in other functions taking environment objects, allowing
2476 calls with an explicit NIL environment argument to be compiled
2478 * fixed bug 228: primary return values from
2479 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2480 COMPILE or FUNCTION.
2481 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2482 :TYPE will no longer signal errors on innocuous objects.
2483 * fixed bug 231b: SETQ is better at respecting type declarations in
2484 the lexical environment.
2485 * fixed a bug in DEFCLASS: classes named by symbols with no or
2486 unprintable packages can now be defined.
2487 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2488 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2489 * fixed compiler failure related to checking types of functions.
2490 (reported by Robert E. Brown)
2491 * the compiler is now much more consistent in its error-checking
2492 treatment of bounding index arguments to sequence functions: in
2493 (SAFETY 3) code, errors will be signalled in almost all cases if
2494 invalid sequence bounding indices are passed to functions defined
2495 by ANSI to operate on sequences.
2496 * fixed a bug in the build procedure: documentation of SBCL-specific
2497 packages is now preserved and available in the final Lisp image.
2498 * lifted FDEFINITION lookup out of loops in the implementation of
2499 many list operations. (thanks to Robert E. Brown)
2500 * fixed a bug in the reader: the #n# reader macro now works for
2501 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2502 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2503 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2504 E. Brown and Tony Martinez respectively)
2505 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2506 SLOT-BOUNDP: in particular, it is now able to optimize them much
2507 better, and is now not vulnerable to having packages renamed.
2508 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2509 always called when a slot is not present in an instance. (thanks
2511 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2512 longer signal an error on unreading a character following EOF on
2513 the previous constituent stream. (thanks to Tony Martinez)
2514 * fixed some bugs revealed by Paul Dietz' test suite:
2515 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2516 not just nonnegative fixnums;
2517 ** the logical bit-array operators such as BIT-AND now accept an
2518 explicit NIL for their "opt-arg" argument (to indicate a
2519 freshly-consed result bit-array);
2520 ** ELT now signals an error on an invalid sequence index in safe
2522 ** the type system is now cleverer about negations of numeric
2523 types, and consequently understands the BIGNUM and RATIO types
2525 ** the type system is now cleverer about the interaction between
2526 INTEGER and RATIO types: while bugs still remain, many more
2527 cases are accurately computed;
2528 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2529 if it is in the last clause;
2530 ** CONSTANTLY now correctly returns a side-effect-free function in
2532 ** DECLARE is no longer treated as a special-operator; in
2533 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2534 * incremented fasl file version number due to the change in the
2535 DEFSTRUCT-SLOT-DESCRIPTION structure.
2537 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2538 * minor incompatible change: code processed by the "interpreter" or
2539 EVAL now has a compilation optimization policy of (DEBUG 2)
2540 (changed from (DEBUG 1)) to improve debuggability of interactive
2541 development, and to allow the use of the debug RETURN command in
2543 * an experimental implementation of the RETURN command for the
2544 debugger has been included. (thanks to Frederik Kuivinen)
2545 * fixed bug 62: constraints were not propagated into a loop.
2546 * fixed bug in embedded calls of SORT (reported and investigated by
2548 * fixed some bugs revealed by Paul Dietz' test suite:
2549 ** printing and reading of arrays with some dimensions having
2550 length 0 (thanks to Gerd Moellmann);
2551 ** BOA constructor with &AUX argument without a default value does
2552 not cause a type error;
2553 ** CONSTANTP now returns true for all self-evaluating objects.
2555 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2556 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2557 accessors that are related by inheritance, as specified in the
2558 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2559 Valtteri Vuorikoski)
2560 * The compiler is now able to inline functions that were defined in
2561 a complex lexical environment (e.g. inside a MACROLET).
2562 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2564 * Support for the upcoming FreeBSD-5.0 release has been included.
2565 (thanks to Dag-Erling Smorgrav)
2566 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2567 effect when it is not in a toplevel context.
2568 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2569 stand a better chance of being correct. (thanks to Gerd
2571 * fixed bug in COERCE, which now signals an error on coercing a
2572 rational to a bounded real type which excludes the expected
2574 * The compiler is now able to derive types more accurately from the
2575 COERCE and COMPILE functions.
2576 * fixed bug 223: functional binding is considered to be constant
2577 only for symbols in the CL package.
2578 * fixed bug 231: SETQ did not check the type of a variable being set
2579 (reported by Robert E. Brown)
2580 * A new optimization for MAKE-INSTANCE has been included, fixing
2581 various bugs (including relating to :ALLOCATION :CLASS slots and
2582 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2584 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2585 ** As required by ANSI, LOOP now disallows anonymous collection
2586 clauses such as COLLECT I in conjunction with aggregate boolean
2587 clauses such as THEREIS (= I 1);
2588 ** LOOP now signals an error when any variable is reused in the
2589 same loop (including the potentially useful construct analogous
2590 to WITH A = 1 WITH A = (1+ A);
2591 ** IT is only a special loop symbol within the first clause of a
2592 conditional loop clause;
2593 ** LOOP with a typed iteration variable over a hashtable now
2594 signals a type error iff it should.
2595 * fixed some other bugs revealed by Paul Dietz' test suite:
2596 ** FILE-STREAM now names the class previously known as FD-STREAM;
2597 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2598 argument) no longer signals an error;
2599 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2600 of the slot symbol, rather than using the current package
2601 ((:CONC-NAME "") continues to intern the slot's name in the
2603 * incremented fasl file version number, because of the incompatible
2604 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2605 of the new implementation of DEFINE-COMPILER-MACRO.
2607 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2608 * Support for building SBCL for MIPS platforms running in
2609 little-endian mode has now been checked in, and basic
2610 functionality on said platforms verified.
2611 * minor incompatible change: PCL now records the pathname of a file
2612 in which methods and the like are defined, rather than its
2614 * minor incompatible change: TRUENAME now considers the truename of
2615 a file naming a directory to be the pathname with :DIRECTORY
2616 component indicating that directory.
2617 * minor incompatible change: a NAMED clause in the extended form of
2618 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2619 reason for the previous behaviour is unclear.
2620 * more systematization and improvement of CLOS and MOP conformance
2621 in PCL (thanks to Gerd Moellman and Pierre Mai):
2622 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2624 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2625 primary methods with no specializers;
2626 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2628 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2629 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2630 FORWARD-REFERENCED-CLASSes; error reporting on
2631 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2633 ** SXHASH on CLOS instances now uses a slot internal to the
2634 instance to return different numbers on distinct instances,
2635 while preserving the same return value through invocations of
2637 ** DEFMETHOD signals errors when methods with longer incongruent
2638 lambda lists are added to generic functions;
2639 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2640 CLASS, as specified in AMOP;
2641 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2642 on the order returned by the primary method for classes of
2643 class STANDARD-CLASS;
2644 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2645 * fixed some bugs shown by Paul Dietz' test suite:
2646 ** DOLIST puts its body in TAGBODY;
2647 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2649 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2650 value producing form;
2651 ** if more variables are given to PROGV than values, extra
2652 variables are bound and made to have no value;
2653 ** NSUBSTITUTE on list arguments gets the right answer with
2655 ** ELT signals an error of type TYPE-ERROR when the index argument
2656 is not a valid sequence index;
2657 ** LOOP signals (at macroexpansion time) an error of type
2658 PROGRAM-ERROR when duplicate variable names are found;
2659 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2660 ** FUNCALL of special-operators now cause an error of type
2662 ** PSETQ now works as required in the presence of side-effecting
2663 symbol-macro places;
2664 ** NCONC accepts any object as its last argument;
2665 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2667 ** loop-for-as-package does not require a package to be explicitely
2669 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2671 * fixed bug 166: compiler preserves "there is a way to go"
2672 invariant when deleting code.
2673 * fixed bug 172: macro lambda lists with required arguments after
2674 &REST arguments now cause an error to be signalled. (thanks to
2676 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2677 bug. (thanks to Matthew Danish)
2678 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2680 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2681 arguments are lexically rebound. (thanks to Gerd Moellmann and
2683 * fixed bug 194: error messages are now more informative when there
2684 is no primary method applicable in a call to a generic
2685 function. (thanks to Gerd Moellmann)
2686 * fixed bug in command line argument checking (thanks to Julian
2688 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2689 (thanks to Matthew Danish)
2690 * incremented fasl file version number, because of the
2691 SXHASH-related changes in the layout of CLOS data structures
2693 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2694 * minor incompatible change: The runtime (the Unix executable named
2695 "sbcl") is now much pickier about the .core files it will load.
2696 Essentially it now requires .core files to descend from the same
2697 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2698 as the runtime does. (The intent is to prevent the crashes which
2699 can occur, and which can even be reported as mysterious failures,
2700 when people patch the sources or change the build parameters
2701 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2702 sbcl and .core files.)
2703 * fixed bug: VALUES-LIST is no longer optimized away.
2704 * fixed bug 142: The FFI conversion of C string values to Lisp
2705 string values no longer conses excessively. (thanks to Nathan
2706 Froyd porting Raymond Toy's fix to CMU CL)
2707 * began to systematize and improve MOP conformance in PCL (thanks to
2708 Nathan Froyd, Gerd Moellman and Pierre Mai):
2709 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2711 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2712 ** FINALIZE-INHERITANCE is now called on class finalization;
2713 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2714 argument precedence order.
2715 * fixed bug 202: The compiler no longer fails on functions whose
2716 derived types contradict their declared type.
2717 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2718 so it can be non-toplevel.
2719 * The fasl file version number has changed (because of the new
2720 implementation of DEFMACRO).
2721 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2722 safe code, that any length requirement by their type-specifier
2723 argument is valid. The exceptions to this are described in bug
2725 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2726 functions now check the types of their inputs as required by ANSI.
2727 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2728 introduced symbol is DECLAREd to be SPECIAL.
2729 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2730 * fixed bug: :COUNT argument to sequence functions may be negative
2731 * fixed bug: body of DO-SYMBOLS may contain declarations
2732 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2733 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2734 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2735 symbol macro only once
2736 * fixed printing of call frame when argument list is unavailable
2737 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2738 * compiler no longer signals WARNING on unknown keyword
2741 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2742 * A beta-quality port to the mips architecture running Linux,
2743 based on the old CMUCL backend, has been made. It has been tested
2744 on a big-endian kernel, and works sufficiently well to be able to
2745 rebuild itself; it has not been tested in little-endian mode.
2746 * fixed an inconsistency between gencgc.c and purify.c which made
2747 dumping/loading .core files unreliable
2748 * fixed bug 120a: The compiler now deals correctly with IFs where
2749 the consequent is the same as the alternative, instead of
2750 misderiving the return type. (thanks to Alexey Dejneka)
2751 * fixed bug 113: Logical pathnames are now dumpable (the logical
2752 host is resolved at load-time, throwing an error if it is not
2754 * fixed bug 174: FORMAT's error message is slightly clearer when a
2755 non-printing character is used in a format directive.
2756 * fixed several bugs in compiler checking of type declarations, i.e.
2757 violations of the Python "declarations are assertions" principle
2758 (thanks to Alexey Dejneka)
2759 * fixed several bugs in PCL's error checking (thanks to Gerd
2761 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2763 * fixed bug in compilation of functions as first class values
2764 (thanks to Antonio Martinez-Shotton)
2765 * The compiler's handling TYPE-ERRORs which it can prove will
2766 inevitably happen at runtime has been cleaned up and corrected
2767 in several ways. (thanks to Alexey Dejneka)
2768 * improved argument type checking for various basic arithmetic
2769 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2770 lavished on them in the past that they can be compiled in many
2771 ways in different special cases
2772 * fixed bug 181: compiler checks validity of user supplied type
2774 * cleaned up code flushing in optimization: Function calls which
2775 should signal errors for safety purposes (e.g. which ANSI says
2776 should signal errors when their arguments are of incorrect type)
2777 are no longer optimized away.
2778 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2779 * incremented fasl file version number, because changes in the
2780 implementation of sequence functions like COERCE caused
2781 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2782 in old inline expansions) to become undefined. (Actually these
2783 changes were later undone, so we might very well be binary
2784 compatible with 0.7.7 after all, but leaving the version number
2785 incremented seemed like the simplest and most conservative
2788 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2789 * An alpha-quality port to the parisc architecture running Linux,
2790 based on the old CMUCL backend, has been made. This, even more so
2791 than the other backends, should be considered still a work in
2792 progress; known problems include that the Linux kernel in 64-bit
2793 mode does not propagate the correct sigcontext structure to
2794 userspace, and consequently SBCL on a parisc64 kernel will not
2796 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2797 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2798 suppressed.) Also now that the compiler is looking at declarations
2799 in the environment, it checks optimization declarations as well,
2800 and suppresses inlining when (> DEBUG SPEED).
2801 * More fixes have been made to treatment of floating point exception
2802 treatment and other Unix signals. In particular, floating point
2803 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2804 * The detection and handling of control stack exhaustion (infinite
2805 or very deeply nested recursion) has changed. Stack exhaustion
2806 detection is now done by write-protecting pages at the OS level
2807 and applies at all optimization settings; when found, a
2808 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2809 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2810 be caught using IGNORE-ERRORS.
2811 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2812 correctly when transforming recursive LABELS functions to LETs.
2813 (thanks to Alexey Dejneka)
2814 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2815 that are names of constants or global variables.
2816 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2817 alien routines with docstrings.
2818 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2819 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2821 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2822 (thanks to Eric Marsden)
2823 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2824 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2825 * Bug fix: The SPARC backend can now compile functions involving
2826 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2827 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2828 to a functions expecting a PATHNAME-DESIGNATOR.
2829 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2830 lambda lists. (thanks to Alexey Dejneka)
2831 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2832 functions so that EXPORTing the name of the class doesn't cause
2833 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2834 to Antonio Martinez for reporting this)
2835 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2836 constant-folded without failing an assertion. (thanks to Einar
2837 Floystad Dorum for reporting this)
2838 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2839 types are now dealt with more correctly by the compiler.
2840 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2841 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2842 behaviour analogous to RENAME-FILE. This puts its behaviour more
2843 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2845 * The fasl file version number has changed again. (because of the
2846 bug fix involving the names of PCL MAKE-INSTANCE functions)
2848 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2849 * bug fix: Floating point exceptions are treated much more
2850 consistently on the x86/Linux and PPC/Linux platforms.
2851 * Array initialization with :INITIAL-ELEMENT is now much faster for
2852 cases when the compiler cannot open code the array creation, but
2853 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2854 array accesses have also seen a speed increase.
2855 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2856 specified. (This was at the root of some bad interactions between
2857 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2859 * bug fix: Internal error arguments for undefined functions are now
2860 computed correctly on the PPC/Linux platform.
2861 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2862 Raymond Toy's patch for CMU CL)
2863 * Support for the Solaris 9 operating environment has been included
2864 (thanks to Daniel Merritt)
2865 * A very ugly but hopefully complete draft of the missing FFI chapter
2866 of the manual has been created by reformatting the corresponding
2867 CMU CL manual chapter into (currently very ugly and incoherent)
2868 DocBook and bringing it up to date for SBCL behavior. Thus, the
2869 manual is now essentially complete, at least by my extreme
2870 once-and-only-once standards, whereby it's acceptable to refer to
2871 the doc strings of SB-EXT functions as the primary documentation.
2872 * The fasl file version number has changed again, due to cleanup of
2873 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2874 is no longer a static symbol.)
2876 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2877 * SBCL now builds with OpenMCL (version 0.12) as the
2878 cross-compilation host; also, more progress has been made toward
2879 bootstrapping under CLISP.
2880 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2882 * bug 158 fixed: The compiler can now deal with integer loop
2883 increments different from 1; fixing this turned out also to fix
2885 * bug 169 fixed: no more bogus warnings about using lexical bindings
2886 despite the presence of perfectly good SPECIAL declarations (thanks
2887 to David Lichteblau)
2888 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2889 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2890 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2892 * bug 180 fixed: Method combination specifications no longer ignore
2893 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2894 * bug fix: Structure type predicate functions now check their argument
2895 count as they should.
2896 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2897 correctly. (thanks to Pierre Mai)
2898 * minor incompatible change: The --noprogrammer option is deprecated
2899 in favor of the new --disable-debugger option, which is very similar.
2900 (The major difference is that it takes effect at a slightly different
2901 time at startup, causing handling of errors in --sysinit and
2902 --userinit files will be affected differently.) The
2903 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2904 been added to allow this functionality to be controlled from ordinary
2905 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2906 maintainers, who might want to run non-interactive scripts to
2907 build SBCL cores which will later be used interactively.)
2908 * minor incompatible change: The LOAD function no longer, when given
2909 a wild pathname to load, loads all files matching that pathname.
2910 Instead, an error of type FILE-ERROR is signalled.
2912 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2913 * bug 147 fixed: The compiler preserves its block link/count
2914 invariants more correctly now so that it doesn't crash. (thanks
2916 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2918 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2919 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2920 no-value-for-this-character as NIL (as specified by ANSI).
2921 * HOST-NAMESTRING on physical pathnames now returns a string that is
2922 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2923 (thanks to Christophe Rhodes)
2924 * The Alpha port handles icache flushing more correctly. (thanks to
2926 * More progress has been made toward bootstrapping under CLISP. (thanks
2927 to Christophe Rhodes)
2928 * The fasl file format has changed again, because dynamic loading
2929 on OpenBSD (which has non-ELF object files) motivated some cleanups
2930 in the way that foreign symbols are transformed and passed around.
2931 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2932 is no longer treated as whitespace by the reader, but instead as
2933 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2934 |A
\7fB|, instead of A as it used to.
2936 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2937 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2938 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2939 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2940 this as of 0.7.1.45, but was left out of the previous news section
2941 (thanks to Dan Barlow)
2942 * SBCL now runs on the Solaris operating system on SPARC architectures
2943 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2944 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2945 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2946 * SPARC backend cleanups, allowing builds of cores optimized for V8
2947 and V9 SPARCS, and also emission of code targeted to a particular
2948 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2950 * SBCL is closer to bootstrapping under CLISP, thanks to various
2951 fixes by Christophe Rhodes.
2952 * The fasl file format has changed again, to allow the compiler's
2953 INFO database to support symbol macros.
2954 * The user manual (in doc/) is formatted into HTML more nicely.
2955 (thanks to coreythomas)
2956 * The system is smarter about SUBTYPEP relationships, especially
2957 those involving NOT types (including types such as ATOM which are
2958 represented internally using NOT types). Thus SUBTYPEP is less
2959 likely to return (VALUES NIL NIL) in general, and in particular
2960 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2962 * The fasl file format has changed again, because the internal
2963 representation of types now includes a new slot to support the new
2964 SUBTYPEP-of-NOT-types logic.
2965 * (not a change in the main branch of SBCL, but a related prototype
2966 which can hopefully be merged into the main branch of SBCL in the
2967 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2968 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2969 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2970 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2971 dispatch macro character combinations. (thanks to Alexey Dejneka)
2972 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2973 that superficially look like logical namestrings correctly.
2974 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2976 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2977 default supplied-p) for &optional and &key arguments. (thanks to
2980 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2981 * incompatible change: The compiler is now less aggressive about
2982 tail call optimization, doing it only when (> SPACE DEBUG) or
2983 (> SPEED DEBUG). (This is an incompatible change because there are
2984 programs which relied on the old CMU-CL-style behavior to optimize
2985 away their unbounded recursion which will now die of stack overflow.)
2986 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2987 for non-GENCGC systems has been increased to 20M (since that
2988 seems much closer to the likely performance optimum for modern
2989 systems than the old 4M value was)
2990 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2991 and *DEBUG-PRINT-LEVEL*
2992 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2993 of CMU CL's support for SPARC, and various endianness and other
2994 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2995 * new syntactic sugar for the Unix command line: --load foo.bar is now
2996 an alternate notation for --eval '(load "foo.bar")'.
2998 ** The system now detects stack overflow and handles it gracefully,
2999 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3000 optimization settings. (This is a good thing in general, and
3001 its introduction in this version should be particularly timely
3002 for anyone whose code fails because of suppression of tail
3004 ** The system now hunts for the C variable "environ" in a more
3005 devious way, to avoid segfaults when the C library version differs
3006 between compile time and run time. (thanks to Christophe Rhodes)
3007 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3008 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3009 ** The compiler no longer issues bogus style warnings for undefined
3010 classes in the same source file as the DEFCLASSes which defined
3011 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3013 ** fixes in CONDITION class precedence list for undefined function
3014 errors (thanks to Alexei Dejneka)
3015 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3016 correctly. (thanks to Dan Barlow)
3017 ** portability fixes aiming at bootstrapping under CLISP (thanks
3018 to Dave McDonald and Christophe Rhodes)
3019 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3020 ** fixes in type translation and and type inference (thanks to
3022 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3023 ** various fixes in the new ports (thanks to Dan Barlow)
3024 * several changes related to debugging:
3025 ** suppression of tail recursion, as noted above
3026 ** stack overflow detection, as noted above
3027 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3028 is now the default. (For some time encapsulation has been more
3029 reliable than the breakpoint-based :ENCAPSULATE NIL
3030 implementation, at least on X86 systems; and I just noticed that
3031 encapsulation also seems closer to the spirit of the ANSI
3034 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3036 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3037 up properly again. (There was a packaging bug in 0.7.0 which
3038 left their definitions in SB-SYS::LOAD-FOREIGN and
3039 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3040 vital for most things which interface to C-level interfaces,
3041 like extensions working with sockets or databases or
3042 Perl-compatible regexes or whatever, and the need to fix
3043 this bug is the main reason that 0.7.1 was released so
3045 ** DEFGENERIC is now choosier about the methods it redefines, so that
3046 reLOADing a previously-LOADed file containing DEFGENERICs does
3047 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3048 cycle now works as it should. (thanks to Alexey Dejneka)
3049 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3050 fixed by Christophe Rhodes. (He actually submitted this patch
3051 months ago, and I delayed until after 0.7.0.)
3052 ** Bug 111 (internal compiler confusion about runtime checks on
3053 FUNCTION types) was fixed by Alexey Dejneka.
3054 * Some internal cleanups (getting rid of variables which aren't
3055 needed now that the byte interpreter is gone) caused the fasl
3056 file format number to change again.
3058 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3059 * major incompatible change: The default fasl file extension, i.e. the
3060 default extension for files produced by COMPILE-FILE, has changed
3061 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3063 ** There are many changes in the implementation of the compiler.
3064 SBCL is now essentially a compiler-only implementation of ANSI
3065 Common Lisp. EVAL still "interprets" a few special cases, but
3066 almost all the interesting cases are handled by creating
3067 a LAMBDA expression, calling COMPILE on it, then calling
3068 FUNCALL on the result.
3069 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3070 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3071 Since the code is newer, there might still be some new bugs
3072 (though not as many as before Martin Atzmueller's fixes:-). But
3073 the new code is substantially simpler and clearer, and hopefully
3074 any remaining bugs will be simpler, less fundamental, and more
3075 fixable then the bugs in the old code.
3076 ** The revised compiler is still a little unsteady on its feet.
3078 *** The debugging information it produces (particularly the names
3079 of FUNCTION objects) is sometimes much less useful than what
3080 the old compiler produced.
3081 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3082 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3083 within a MACROLET) has been temporarily weakened.
3084 ** There are new compiler optimizations for various functions:
3085 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3086 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3087 *** the math functions TRUNCATE, FLOOR, and CEILING
3088 *** the function-of-all-trades COERCE
3089 Mostly these should be transparent, but there's one
3090 potentially-annoying problem (bug 117): when the compiler
3091 inline-expands a function and does type analysis on the result,
3092 it can create control paths which have type mismatches, and
3093 when it can't prove that those control paths aren't taken,
3094 it will issue WARNINGs about the type mismatches. This is
3095 a particular problem in practice for the new sequence functions.
3096 It's not clear how this should be fixed, and for now, a
3097 workaround is given in the entry for 117 in the BUGS file.
3098 ** (Because of the interaction between the two previous items --
3099 occasional inlining problems and new inline expansions -- some
3100 of the new sequence function optimizations won't really kick in
3101 completely until debugging information, and then inlining, are
3102 straightened out in some future version.)
3103 * minor incompatible changes:
3104 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3105 DIRECTORY no longer implicitly promotes NIL slots of its
3106 pathname argument to :WILD. In particular, when you ask for the
3107 contents of a directory (which you used to be able to do without
3108 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3109 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3110 ** changes in behavior that ANSI explicitly defines to be
3111 implementation dependent:
3112 *** The new compiler-only implementation still conforms with ANSI,
3113 but acts a little different than before. Besides the obvious
3114 changes in performance tradeoffs (that the cost per form passed
3115 to EVAL has gone up, and the cost per form executed by EVAL
3116 has gone down), the behavior of the system changes a little
3117 because there are no longer any interpreted function objects.
3118 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3119 e.g. doing COMPILE on the output of interactive DEFUN is
3121 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3123 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3124 has changed from (:CL) to NIL.
3125 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3126 e.g. #\Newline and #\Tab, don't have names specified in the
3127 ANSI Common Lisp standard, is now based on their ASCII symbolic
3128 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3129 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3130 are no longer used for output.
3131 ** changes in internal implementation constants:
3132 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3133 4 million. (If your application spends a lot of time GCing and
3134 you have a lot of RAM, you might want to experiment with
3135 increasing it even more.)
3136 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3137 However, almost all old code should still continue to work without
3138 immediate update, as SB-C-CALL is now a (deprecated) nickname
3140 ** Old operator names in the style DEF-FOO are now deprecated in
3141 favor of new corresponding names DEFINE-FOO, for consistency with
3142 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3143 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3144 internal symbols, but a few supported extensions like
3145 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3146 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3147 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3148 etc. as you get deeper into recursive calls to the debugger
3149 command loop, instead of the old "5]", "5]]", "5]]]"
3150 sequence. (I was motivated to do this when squabbles between
3151 ILISP and SBCL left me very deeply nested in the debugger. In the
3152 short term, this change will probably provoke more ILISP/SBCL
3153 squabbles, but hopefully it will be an improvement in the long run.)
3154 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3155 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3156 function, since declaiming return types involving aliens is
3157 (1) annoyingly messy to do by hand and (2) vital to efficient
3158 compilation of code which calls such functions.
3159 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3160 longer reexported by the SB-EXT package. They're solely useful
3161 for alien code, so it seems more logical that you should get
3162 them from the SB-ALIEN package, not in SB-EXT.
3163 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3164 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3165 features. Instead, the code that they used to control is always
3166 built into the system.
3167 * many other bug fixes
3168 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3169 advantage of the new EVAL-WHEN stuff and to clean them up in
3170 general, and they are now more ANSI-compliant in a number of
3171 ways. Martin Atzmueller is responsible for a lot of this.
3172 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3174 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3175 *** correct ERROR type for various file operations
3176 *** some fixes for Lisp streams
3177 *** DEFMETHOD syntax checking
3178 *** changing old weird representation of debug information as
3179 strings (which, among their other deficiencies, don't transform
3180 correctly when you rename packages, and don't change their
3181 print representation when you change things like *PACKAGE*
3182 and *PRINT-LENGTH*) to symbols and lists of symbols
3183 He also made several improvements and fixed several bugs in DESCRIBE.
3184 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3186 *** misbehavior of WRITE-STRING/WRITE-LINE
3187 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3188 and several other LOOP problems as well
3189 *** DIRECTORY when similar filenames are present
3190 *** DEFGENERIC with :METHOD options
3191 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3192 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3193 *** argument ordering in FIND with :TEST option
3194 *** mishandled package designator argument in APROPOS-LIST
3195 *** various problems in the backquote readmacro
3196 *** a bug in APROPOS
3197 *** probably some others that I'm not describing very well here,
3198 since the CVS log documents them by reference to sbcl-devel
3199 messages, and the SourceForge archives aren't working well.:-(
3200 ** Dan Barlow improved the Alpha port (and is making progress on the
3201 PPC port, for those of you who think different).
3202 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3203 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3204 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3205 continues to work on the SPARC port (for those of you in a position
3206 to look down upon our little PC-compatible boxes from a great height).
3207 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3208 and uses that copy, rather than the current dynamic value, when
3209 it's trying to decide whether to truncate output. Thus e.g.
3210 (let ((*print-lines* 50))
3211 (pprint-logical-block (stream nil)
3213 (let ((*print-lines* 8))
3214 (print (aref possiblybigthings i) stream)))))
3215 should now truncate the logical block only at 50 lines, instead of
3216 often truncating it at 8 lines, as it did before.
3217 * The doc/cmucl/ directory, containing old CMU CL documentation
3218 from the time of the fork, is no longer part of the base system.
3219 SourceForge has shut down its anonymous FTP service, and with it
3220 my original plan for distributing the old CMU CL documentation
3221 there. For now, if you need these files you can download an old
3222 SBCL source release and extract them from it.
3223 * The fasl file version number changed again, for dozens of reasons,
3224 some of which are apparent above.
3226 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3227 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3228 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3229 patch, so that DISASSEMBLE output is much nicer.
3230 * The code in the SB-PROFILE package now seems reasonably stable.
3231 I still haven't decided what the final interface should look like
3232 (I'd like PROFILE to interact cleanly with TRACE, since both
3233 facilities use function encapsulation) but if you have a need
3234 for profiling now, you can probably use it successfully with
3235 the current CMU-CL-style interface.
3236 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3237 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3238 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3239 link now returns the dangling link itself, and for similar
3240 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3241 link itself. (In these cases the old code signalled an error and
3242 looped endlessly, respectively.) Thus, DIRECTORY now works even
3243 in the presence of dangling and cyclic symbolic links.
3244 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3245 is now a supported extension again, since the consensus on
3246 sbcl-devel was that it can be useful for ordinary development
3247 work, not just for debugging SBCL itself.
3248 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3249 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3250 that currently-defined functions might be redefined later with
3251 different return types.
3252 * Hash tables can be printed readably, as inspired by CMU CL code
3253 of Eric Marsden and SBCL code of Martin Atzmueller.
3254 * better error handling in CLOS method combination, thanks to
3255 Martin Atzmueller porting Pierre Mai's CMU CL patches
3256 * more overflow fixes for >16Mbyte I/O buffers
3257 * A bug in READ has been fixed, so that now a single Ctrl-D
3258 character suffices to cause end-of-file on character streams.
3259 In particular, now you only need one Ctrl-D at the command
3260 line (not two) to exit SBCL.
3261 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3263 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3264 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3265 does the right thing.
3266 * The implementation of some type tests, especially for CONDITION
3267 types, is now tidier and maybe faster, due to CMU CL code
3268 originally by Douglas Crosher, ported by Martin Atzmueller.
3269 * Some math functions have been fixed, and there are new
3270 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3271 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3272 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3273 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3274 likely to be built into sbcl-0.7.0.)
3275 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3276 CL, ported to SBCL by Martin Atzmueller)
3277 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3278 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3279 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3280 * There's a new slam.sh hack to shorten the edit/compile/debug
3281 cycle for low-level changes to SBCL itself, and a new
3282 :SB-AFTER-XC-CORE target feature to control the generation of
3283 the after-xc.core file needed by slam.sh.
3284 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3285 COMPILE-FILE is no longer supported, so that now every function
3286 gets an entry point, so that block compilation looks a little
3287 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3288 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3289 returns the number of bytes consed since the system started,
3290 rather than the number consed since the first time the function
3291 was called. (The new definition parallels ANSI functions like
3292 CL:GET-INTERNAL-RUN-TIME.)
3293 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3294 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3295 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3296 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3297 * Fasl file version numbers are now independent of the target CPU,
3298 since historically most system changes which required version
3299 number changes have affected all CPUs equally. Similarly,
3300 the byte fasl file version is now equal to the ordinary
3303 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3304 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3305 is no longer recognized. I apologize for this, because it was
3306 listed in SB-EXT as a supported extension, but I found that
3307 its existing behavior was poorly specified, as well as incorrectly
3308 specified, and it looked like too much of a mess to straighten it
3309 out. I have enough on my hands trying to get ANSI stuff to work..
3310 * many patches ported from CMU CL by Martin Atzmueller, with
3311 half a dozen bug fixes in pretty-printing and the debugger, and
3312 half a dozen others elsewhere
3313 * fixed bug 13: Floating point infinities are now supported again.
3314 They might still be a little bit flaky, but thanks to bug reports
3315 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3316 as flaky as they were.
3317 * The --noprogrammer command line option is now supported. (Its
3318 behavior is slightly different in detail from what the old man
3319 page claimed it would do, but it's still appropriate under the
3320 same circumstances that the man page talks about.)
3321 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3322 are now supported, and enabled by default. Thus, the compiler can
3323 handle many floating point and complex operations much less
3324 inefficiently. (Thus e.g. you can implement a complex FFT
3326 * The compiler now detects type mismatches between DECLAIM FTYPE
3327 and DEFUN better, and implements CHECK-TYPE more correctly, and
3328 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3329 thanks to patches from Martin Atzmueller.
3330 * various fixes to make the cross-compiler more portable to
3331 ANSI-conforming-but-different cross-compilation hosts (notably
3332 Lispworks for Windows, following bug reports from Arthur Lemmens)
3333 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3334 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3335 fixed thanks to Pierre Mai's CMU CL patches.
3336 * fixes to keep the system from overflowing internal counters when
3337 it tries to use i/o buffers larger than 16M bytes
3338 * fixed bug 45a: Various internal functions required to support
3339 complex special functions have been merged from CMU CL sources.
3340 (When I was first setting up SBCL, I misunderstood a compile-time
3341 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3342 * improved support for type intersection and union, fixing bug 12
3343 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3344 more obscure bugs as well
3345 * some steps toward byte-compiling non-performance-critical
3346 parts of the system, courtesy of patches from Martin Atzmueller
3347 * Christophe Rhodes has made some debian packages of sbcl at
3348 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3349 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3350 stable, but are nonetheless usable. When he's ready, I'd be happy
3351 to add them to the SourceForge "File Releases" section. (And if
3352 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3353 * new fasl file format version number (because of changes in
3354 internal representation of (OR ..) types to accommodate the new
3355 support for (AND ..) types, among other things)
3357 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3358 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3360 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3362 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3363 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3364 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3365 * DESCRIBE now works on structure objects again.
3366 * Most function call argument type mismatches are now handled as
3367 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3368 know whether the function will be redefined before the call is
3369 executed. (The compiler could flag local calls with full WARNINGs,
3370 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3371 it doesn't keep track of enough information to know whether calls
3372 are local in this sense.)
3373 * Compiler output is now more verbose, with messages truncated
3374 later than before. (There should be some supported way for users
3375 to override the default verbosity, but I haven't decided how to
3376 provide it yet, so this behavior is still controlled by the internal
3377 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3378 src/compiler/ir1util.lisp.)
3379 * Fasl file format version numbers have increased again, because
3380 support for the Gray streams extension changes the layout of the
3381 system's STREAM objects.
3382 * The Gray subclassable streams extension now works, thanks to a
3383 patch from Martin Atzmueller.
3384 * The full LOAD-FOREIGN extension (not just the primitive
3385 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3386 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3387 but like most other programs, it defaults to copying the Unix
3388 environment from the original process instead of starting the
3389 new process in an empty environment.
3390 * Extensions which manipulate the Unix environment now support
3391 an :ENVIRONMENT keyword option which doesn't smash case or
3392 do other bad things. The CMU-CL-style :ENV option is retained
3393 for porting convenience.
3394 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3395 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3397 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3399 * A patch from Martin Atzmueller seems to have solved the SIGINT
3400 problem, and as far as we know, signal-handling now works cleanly.
3401 (If you find any new bugs, please report them!)
3402 * The system no longer defaults Lisp source file names to types
3403 ".l", ".cl", or ".lsp", but only to ".lisp".
3404 * The compiler no longer uses special default file extensions for
3405 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3406 seems to expect a single default extension for all compiled code,
3407 and there's no compelling reason to try to stretch the standard
3408 to allow two different extensions.) Instead, byte-compiled files
3409 default to the same extension as native-compiled files.
3410 * Fasl file format version numbers have increased again, because
3411 a rearrangement of internal implementation packages made some
3412 dumped symbols in old fasl files unreadable in new cores.
3413 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3414 many fewer weird special cases.
3415 * Bug #17 (differing COMPILE-FILE behavior between logical and
3416 physical pathnames) has been fixed, and some related misbehavior too,
3417 thanks to a patch from Martin Atzmueller.
3418 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3419 by Tim Moore, ported to SBCL by Martin Atzmueller.
3420 * Martin Atzmueller fixed several filesystem-related problems,
3421 including bug #36, in part by porting CMU CL patches, which were
3422 written in part by Paul Werkowski.
3423 * More compiler warnings in src/runtime/ are gone, thanks to
3424 more patches from Martin Atzmueller.
3425 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3428 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3430 * DESCRIBE now works on CONDITION objects.
3431 * The debugger now handles errors which arise when trying to print
3432 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3434 * The build system now uses an additional file, customize-target-features.lisp,
3435 to allow local modifications to the target *FEATURES* list. (The point of
3436 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3437 debugging features enabled, without having to worry about propagating it
3438 into everyone's system when I do a "cvs update".) When no
3439 customize-target-features.lisp file exists, the target *FEATURES* list
3440 should be constructed the same way as before.
3441 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3442 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3443 warn about behavior which is undefined under the ANSI spec. Note: This
3444 is specified by ANSI, but it's not very popular with programmers.
3445 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3446 macro in the SBCL sources for an example of a workaround which you
3447 might use to make portable ANSI-standard code which does what you want.
3448 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3449 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3450 when it's used as a non-toplevel form. (This is required in order
3451 to implement the DEFCONSTANT-EQX macro.)
3452 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3453 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3454 funny things, due to bugs in the implementation of EVAL-WHEN
3455 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3456 non-toplevel DEFCONSTANTs are uncommon.)
3457 * The core file version number and fasl file version number have been
3458 incremented, because the old noncompliant DEFCONSTANT behavior involved
3459 calling functions which no longer exist, and because I also took the
3460 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3461 * fixed bug 1 (error handling before read-eval-print loop starts), and
3462 redid debugger restarts and related debugger commands somewhat while
3464 ** The QUIT debugger command is gone, since it did something
3465 rather different than the SB-EXT:QUIT command, and since it never
3466 worked properly outside the main toplevel read/eval/print loop.
3467 Invoking the new TOPLEVEL restart provides the same functionality.
3468 ** The GO debugger command is also gone, since you can just invoke
3469 the CONTINUE restart directly instead.
3470 ** The TOP debugger command is also gone, since it's redundant with the
3471 FRAME 0 command, and since it interfered with abbreviations for the
3473 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3475 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3476 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3477 some porting work by Martin Atzmueller)
3478 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3479 with a boatload of patches which he ported to SBCL. Now that those
3481 ** The system tries to make sure that its low-priority messages
3482 are prefixed by semicolons, to help people who like to use
3483 syntax highlighting in their ILISP buffer. (This patch
3484 was originally due to Raymond Toy.)
3485 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3486 patches originally written by Raymond Toy.
3487 ** The compiler understands coercion between single-value and
3488 multiple-VALUES type expressions better, getting rid of some very
3489 weird behavior, thanks to patches originally by Robert MacLachlan
3490 and Douglas Crosher.
3491 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3492 lambda lists, thanks to a patch originally by Pierre Mai.
3493 ** The system no longer bogusly warns about "abbreviated type
3495 ** The compiler gets less confused by inlining and RETURN-FROM,
3496 thanks to some patches originally by Tim Moore.
3497 ** The system no longer hangs when dumping circular lists to fasl
3498 files, thanks to a patch originally from Douglas Crosher.
3499 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3500 undefined function error.
3501 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3502 in structure slot initforms) for now, documented workaround instead:-|
3503 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3504 * fixed bug 5: added stubs for various Gray stream functions called
3505 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3506 installed, at least appropriate type errors are generated
3507 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3508 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3509 consistently in DEFMETHOD forms.
3510 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3511 it doesn't seem to affect SBCL after all
3512 * The C runtime system now builds with better optimization and many
3513 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3515 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3517 * The system is now under CVS at SourceForge (instead of the
3518 CVS repository on my home machine).
3519 * The new signal handling code has been tweaked to treat register
3520 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3521 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3522 downstream, e.g. in debug-int.lisp, has implicit dependencies
3523 on the unsignedness of integer representation of machine words,
3524 and that caused the system to bomb out with infinite regress
3525 when trying to recover from type errors involving signed values,
3526 e.g. (BUTLAST '(1 2 3) -1).)
3527 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3528 (This was one of the bugs Peter Van Eynde reported back in July.)
3529 * The system now uses code inspired by Colin Walters' O(N)
3530 implementation of MAP (from the cmucl-imp@cons.org mailing
3531 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3532 inline the MAP operation, and there is more than one
3533 sequence argument to the MAP call (so that it can't just
3534 do ETYPECASE once and for all based on the type of the
3535 single sequence argument). (The old non-inline implementation
3536 of the general M-argument sequence-of-length-N case required
3537 O(M*N*N) time when any of the sequence arguments were LISTs.)
3538 * The QUIT :UNIX-CODE keyword argument has been renamed to
3539 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3540 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3542 * Raymond Wiker's patches to port dynamic loading from Linux to
3543 FreeBSD have been added.
3544 * The BUGS file is now more nearly up to date, thanks in large part
3545 to Martin Atzmueller's review of it.
3546 * The debugger now flushes standard output streams before it begins
3547 its output ("debugger invoked" and so forth).
3548 * The core version number and fasl file version number have both
3549 been incremented, because of incompatible changes in the layout
3551 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3552 used to not be called for a saved Lisp image.)
3553 * Martin Atzmueller's version of a patch to fix a compiler crash,
3554 as posted on sbcl-devel 13 September 2000, has been installed.
3555 * Instead of installing Martin Atzmueller's patch for the
3556 compiler transform for SUBSEQ, I deleted the compiler transform,
3557 and transforms for some similar consing operations.
3558 * A bug in signal handling which kept TRACE from working on OpenBSD
3560 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3561 away by constant folding
3562 * The system now defines its address space constants in one place
3563 (in the Lisp sources), and propagates them automatically elsewhere
3564 (through GENESIS and the sbcl.h file). Therefore, patching the
3565 address map is less unnecessarily tedious and error-prone. The
3566 Lisp names of address space constants have also been systematized.
3567 * CVS tags like dollar-Header-dollar have been removed from
3568 the sources, because they have never saved me trouble and
3569 they've been source of trouble working with patches and other
3570 diff-related operations.
3571 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3572 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3574 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3576 * The system has been ported to OpenBSD.
3577 * The system now compiles with a simple "sh make.sh" on the systems
3578 that it's supported on. I.e., now you no longer need to tweak
3579 text in the target-features.lisp-expr and symlinks in src/runtime/
3580 by hand, the make.sh takes care of it for you.
3581 * The system is no longer so grossly inefficient when compiling code
3582 involving vectors implemented as general (not simple) vectors (VECTOR T),
3583 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3584 which dares to use the various sequence functions on non-simple
3585 vectors, takes less of a performance hit.
3586 * There is now a primitive type predicate VECTOR-T-P
3587 to test for the (VECTOR T) type, so that e.g.
3588 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3589 can now be compiled with some semblance of efficiency. (The old code
3590 turned the type declaration into a full call to %TYPEP at runtime!)
3591 * AREF on (VECTOR T) is still not fast, since it's still compiled
3592 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3593 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3594 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3595 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3596 without making full calls to SUBTYPEP at runtime.
3597 (Some analogous efficiency issues for non-simple vectors specialized to
3598 element types other than T, or for non-simple multidimensional arrays,
3599 have not been addressed. They could almost certainly be handled the
3600 same way if anyone is motivated to do so.)
3601 * The changes in array handling break binary compatibility, so
3602 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3603 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3604 instead of (VALUES T T).
3605 * By following the instructions that Dan Barlow posted to sbcl-devel
3606 on 2 July 2000, I was able to enable primitive dynamic object
3607 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3608 functionality is not implemented (since it calls ld to resolve
3609 library references automatically, requiring RUN-PROGRAM for its
3610 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3611 try to resolve library references) is now supported.
3612 * The system now flushes the standard output streams when it terminates,
3613 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3614 them at several other probably-convenient times, e.g. in each pass of
3615 the toplevel read-eval-print loop, and after evaluating a form given
3616 as an "--eval" command-line option. (These changes were motivated by a
3617 discussion of stream flushing issues on cmucl-imp in August 2000.)
3618 * The source transform for TYPEP of array types no longer assumes
3619 that an array whose element type is a not-yet-defined type
3620 is implemented as an array of T, but instead punts, so that the
3621 type will be interpreted at runtime.
3622 * There is now some support for cross-compiling in make.sh: each of
3623 the phases of make.sh has its own script. (This should be transparent
3624 to people doing ordinary, non-cross-compile builds.)
3625 * Since my laptop doesn't have hundreds of megabytes of memory like
3626 my desktop machine, I became more motivated to do some items on
3627 my to-do list in order to reduce the size of the system a little:
3628 ** Arrange for various needed-only-at-cold-init things to be
3629 uninterned after cold init. To support this, those things have
3630 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3631 symbols with such names are now uninterned after cold init).
3632 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3633 fasl files for cold load.
3634 ** Remove the old compiler structure pooling code (which used to
3635 be conditional on the target feature :SB-ALLOC) completely.
3636 ** Redo the representation of some data in cold init to be more compact.
3637 (I also looked into supporting byte compiled code at bootstrap time,
3638 which would probably reduce the size of the system a lot, but that
3639 looked too complicated, so I punted for now.)
3640 * The maximum signal nesting depth in the src/runtime/ support code has
3641 been reduced from 4096 to 256. (I don't know any reason for the very
3642 large old value. If the new smaller value turns out to break something,
3643 I'll probably just bump it back up.)
3644 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3646 * Many, many bugs reported by Peter Van Eynde have been added to
3647 the BUGS list; some have even been fixed.
3648 * While enabling dynamic object file loading, I tried to make the
3649 code easier to understand, renaming various functions and variables
3650 with less ambiguous names, and changing some function calling
3651 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3652 * While trying to figure out how to do the OpenBSD port, I tried to
3653 clean up some of the code in src/runtime/. In particular, I dropped
3654 support for non-POSIX signal handling, added various comments,
3655 tweaked the code to reduce the number of compilation warnings, and
3656 renamed some files to increase consistency.
3657 * To support the new automatic configuration functionality in make.sh,
3658 the source file target-features.lisp-expr has been replaced with the
3659 source file base-target-features.lisp-expr and the machine-generated
3660 file local-target-features.lisp-expr.
3661 * fixed a stupid quoting error in make.sh so that using CMU CL
3662 "lisp -batch" as cross-compilation host works again
3664 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3666 * DESCRIBE no longer tries to call itself recursively to describe
3667 bound/fbound values, so that it no longer fails on symbols which are
3668 bound to themselves (like keywords, T, and NIL).
3669 * DESCRIBE now works on generic functions.
3670 * The printer now prints less-screwed-up representations of closures
3671 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3672 * A private symbol is used instead of the :EMPTY keyword previously
3673 used to mark empty slots in hash tables. Thus
3674 (DEFVAR *HT* (MAKE-HASH-TABLE))
3675 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3676 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3677 now does what ANSI says that it should. (You can still get
3678 similar noncompliant behavior if bang on the hash table
3679 implementation with all the symbols you get back from
3680 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3681 This breaks binary compatibility, since tests for equality to
3682 :EMPTY are wired into things like the macroexpansion of
3683 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3685 * There's now a minimal placeholder implementation for CL:STEP,
3686 as required by ANSI.
3687 * An obscure bug in the interaction of the normal compiler, the byte
3688 compiler, inlining, and structure predicates has been patched
3689 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3690 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3692 * Missing ordinary arguments in a macro call are now detected even
3693 when the macro lambda list contains &KEY or &REST.
3694 * The debugger no longer complains about encountering the top of the
3695 stack when you type "FRAME 0" to explicitly instruct it to go to
3696 the top of the stack. And it now prints the frame you request even
3697 if it's the current frame (instead of saying "You are here.").
3698 * As specified by ANSI, the system now always prints keywords
3699 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3701 * The default initial SIZE of HASH-TABLEs is now smaller.
3702 * Type information from CLOS class dispatch is now propagated
3703 into DEFMETHOD bodies, so that e.g.
3704 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3706 is now basically equivalent to
3707 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3708 (DECLARE (TYPE SINGLE-FLOAT X))
3710 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3711 operation, without having to do run-time type dispatch.
3712 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3713 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3714 * Since I don't seem to be making big file reorganizations very often
3715 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3716 is overflowing my ability to conveniently back them up), I've finally
3717 checked the system into CVS. (The CVS repository is on my home system,
3718 not at SourceForge -- putting it on SourceForge might come later.)
3719 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3720 high-level GC-NOTIFY-FOO functions send their output. (There's
3721 still very little control of where low-level verbose GC functions
3722 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3723 less than it used to -- the GC-NOTIFY-FOO functions are now under
3724 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3725 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3726 in only one place in the source code, and propagates it automatically
3727 everywhere that it's needed. Thus e.g. when I bump the version from
3728 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3729 * The C source files now include boilerplate legalese and documentation
3730 at the head of each file (just as the Lisp source files already did).
3731 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3732 to his page will be replaced with a link to his new CLiki service.
3734 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3736 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3737 * The build process now looks for GNU make under the default name "gmake",
3738 instead of "make" as it used to. If GNU make is not available as "gmake"
3739 on your system, you can change this default behavior by setting the
3740 GNUMAKE environment variable.
3741 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3742 can build without error under CMU CL.
3744 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3746 * There is now a partial SBCL user manual (with some new text and some
3747 text cribbed from the CMU CL manual).
3748 * The beginnings of a profiler have been added (starting with the
3749 CMU CL profiler and simplifying and cleaning up). Eventually the
3750 main interface should be through the TRACE macro, but for now,
3751 it's still accessed through vaguely CMU-CL-style functions and macros
3752 exported from the package SB-PROFILE.
3753 * Some problems left over from porting CMU CL to the new
3754 cross-compilation bootstrap process have been cleaned up:
3755 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3756 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3757 part when getting rid of the compiler *BACKEND* stuff.)
3758 ** The value of *NULL-TYPE* was screwed up, because it was
3759 being initialized before the type system knew the final
3760 definition of the 'NULL type. This screwed up several key
3761 optimizations in the compiler, causing inefficiency in all sorts
3762 of places. (I found it because I wanted to understand why
3763 GET-INTERNAL-RUN-TIME was consing.)
3764 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3765 PROCLAIM FTYPE information. Unfortunately this broke binary
3766 compatibility again, since now the forms output by DEFGENERIC
3767 to refer to functions which didn't exist in 0.6.3.
3768 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3769 can use the new (as of 0.6.3) transform for SOME into MAP into
3771 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3772 values to (INTEGER 0 1000000), so that the time code will no longer
3773 occasionally get blown up by Linux returning 1000000 microseconds
3774 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3775 its output conform to the ANSI spec. (Alas, this makes its output
3776 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3777 * A full call to MAP NIL with a single sequence argument no longer conses.
3778 * fixes to problems pointed out by Martin Atzmueller:
3779 * The manual page no longer talks about multiprocessing as though
3780 it were currently supported.
3781 * The ILISP support patches have been removed from the distribution,
3782 because as of version 5.10.1, ILISP now supports SBCL without us
3783 having to maintain patches.
3784 * added a modified version of Raymond Toy's recent CMU CL patch for
3785 EQUALP comparison of HASH-TABLE
3787 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3789 * The system still can't cross-compile itself with
3790 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3791 entails), but at least it can compile more of itself that way
3792 than it used to be able to, and various buglets which were uncovered
3793 by trying to cross-compile itself that way have now been fixed.
3794 * This release breaks binary compatibility again. This time
3795 at least I've incremented the FASL file format version to 2, so that the
3796 problem can be detected reliably instead of just causing weird errors.
3797 * various new style warnings:
3798 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3799 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3800 ** using the lexical binding of a variable named in the *FOO* style
3801 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3802 as specified by ANSI.
3803 * *RANDOM-STATE* is no longer automatically initialized from
3804 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3805 default behavior of the system is to repeat its behavior every time
3806 it's run. If you'd like to change this behavior, you can always
3807 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3808 old convention there was no comparably easy way to get the system to
3809 repeat its behavior every time it was run.
3810 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3811 FTYPE declarations has been removed, in favor of their ANSI
3812 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3813 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3814 the types of their sequence arguments can be determined at compile time.
3815 This is done through a new open code expansion for MAP which eliminates
3816 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3817 argument types can be determined at compile time.
3818 * The optimizer now transforms COERCE into an identity operation when it
3819 can prove that the coerced object is already of the correct type. (This
3820 can be a win for machine generated code, including the output of other
3821 optimization transforms, such as the MAP transform above.)
3822 * Credit information has been moved from source file headers into CREDITS.
3823 * Source file headers have been made more standard.
3824 * The CASE macro now compiles without complaining even when it has
3827 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3829 * (Note that the way that the PCL macroexpansions were rewritten
3830 to accommodate the change in DEFGENERIC below breaks binary
3831 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3832 not run under sbcl-0.6.2. Once we get out of alpha releases,
3833 i.e. hit release 1.0.0, we'll probably try to maintain binary
3834 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3835 and sbcl-1.4.4. Until then, however, it might be fairly common
3836 for maintenance releases to break binary compatibility.)
3837 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3839 * The reporting of unhandled signals has been changed to print some
3840 explanatory text as well as the report form. (Previously only
3841 the report form was printed.)
3842 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3843 it defines, so that the compiler no longer issues undefined function
3844 warnings for compiled-but-not-yet-loaded generic functions.
3845 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3846 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3847 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3848 section of the ANSI spec are supported.
3849 * The "" nickname for the "KEYWORD" package has been removed.
3850 The reader still handles symbol tokens which begin with a package marker
3851 as keywords, but it doesn't expose its mechanism for doing so in the
3852 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3853 * The system now issues STYLE-WARNINGs for contradictory TYPE
3854 proclamations. (Warnings for contradictory FTYPE proclamations would
3855 be nice too, but those can't be done usefully unless the type system
3856 is made smarter about FUNCTION types.)
3857 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3858 systematized, so that "*target-*.lisp is supposed to exist only on the
3859 target and imply that there's a related file which exists on the
3860 host, and *host-*.lisp is supposed to exist only on the host and imply
3861 that there's a related file which exists on the target. This involves a
3862 lot of renaming. Hopefully the acute confusion caused by the renaming
3863 will be justified by the reduction in chronic confusion..
3864 ** runtime-type.lisp -> early-target-type.lisp
3865 ** target-type.lisp -> late-target-type.lisp
3866 ** early-host-format.lisp -> early-format.lisp
3867 ** late-host-format.lisp -> late-format.lisp
3868 ** host-error.lisp -> misc-error.lisp
3869 ** early-error.lisp -> early-target-error.lisp
3870 ** late-error.lisp -> late-target-error.lisp
3871 ** host-defboot.lisp -> early-defboot.lisp
3872 ** code/misc.lisp -> code/target-misc.lisp
3873 ** code/host-misc.lisp -> code/misc.lisp
3874 ** code/numbers.lisp -> code/target-numbers.lisp
3875 ** code/early-numbers.lisp -> numbers.lisp
3876 ** early-host-type.lisp -> early-type.lisp
3877 ** late-host-type.lisp -> late-type.lisp
3878 ** host-typep.lisp -> typep.lisp
3879 ** load.lisp -> target-load.lisp
3880 ** host-load.lisp -> load.lisp
3881 ** host-disassem.lisp -> disassem.lisp
3882 ** host-insts.lisp -> insts.lisp
3883 ** byte-comp.lisp -> target-byte-comp.lisp
3884 ** host-byte-comp.lisp -> byte-comp.lisp
3885 ** host-signal.lisp -> signal.lisp
3886 ** host-defstruct.lisp -> defstruct.lisp
3887 ** late-target-type.lisp -> deftypes-for-target.lisp
3888 Furthermore, several other previously target-only files foo.lisp (e.g.
3889 hash-table.lisp and random.lisp) have been split into a target-and-host
3890 foo.lisp file and a target-only target-foo.lisp file, with their key type
3891 definitions in the target-and-host part, so that the cross-compiler will
3892 know more about target types.
3893 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3894 gone away. In their place are various *BACKEND-FOO* variables
3895 corresponding to the slots of the old structure.
3896 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3897 into the target SBCL has been fixed.
3898 * The chill.lisp system for loading cold code into a running SBCL
3900 * Support for the CMU CL "scavenger hook" extension has been removed.
3901 (It was undocumented and unused in the CMU CL sources that SBCL was
3902 derived from, and stale in sbcl-0.6.1.)
3903 * Various errors in the cross-compiler type system were detected
3904 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3905 (enabling various consistency checks). Many of them were fixed,
3906 but some hard problems remain, so the compiler is back to
3907 running without *TYPE-SYSTEM-INITIALIZED* for now.
3908 * As part of the cross-compiler type system cleanup, I implemented
3909 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3910 * I have started adding UNCROSS calls throughout the type system
3911 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3912 on cross-compiler input files will be able to go away, and various
3914 * CONSTANTP now returns true for quoted forms (as explicitly required
3917 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3919 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3920 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3921 (MAKE-LIST -1). In the longer term, it ought to become true
3922 that declarations are assertions even at SAFETY 1. For now, it's not
3923 quite true even at SAFETY 3, but it's at least more nearly true..
3924 (Note that this change seems to increases the size of the system by
3925 O(5%) and to decrease the speed of the compiler by 20% or more.)
3926 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3927 for the problem of printing dozens of lines of distracting information
3928 about low-level system machinery as part of the top stack frame
3929 on entry to the debugger when an undefined function was called.
3930 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3931 is not reset to COMMON-LISP-USER.
3932 * Compilation of stuff related to dyncount.lisp has been made conditional
3933 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3934 smaller. The various dyncount-related symbols have been moved into
3935 a new "SB-DYNCOUNT" package.
3936 * tty-inspect.lisp has been renamed to inspect.lisp.
3937 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3938 feature has gone away. (When we eventually port to other flavors of
3939 libc and/or Unix, we'll try to make the differences between flavors
3940 invisible at the user level.)
3941 * Various other *FEATURES* tags, and/or their associated conditionals,
3942 have been removed if obsolescent, or given better documentation, or
3943 sometimes given more-mnemonic names.
3945 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3947 * tidied up "make.sh" script
3948 * tidied up system directory structure
3949 * better "clean.sh" behavior
3950 * added doc/FOR-CMUCL-DEVELOPERS
3951 * many many small tweaks to output format, e.g. removing possibly-confusing
3952 trailing #\. character in DESCRIBE-INSTANCE
3953 * (EQUALP #\A 'A) no longer signals an error.
3954 * new hashing code, including EQUALP hashing
3955 * tidied up Lisp initialization and toplevel
3956 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3957 * command line argument processing
3958 * added POSIX-GETENV function to deal with Unix-ish environment variables
3959 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3960 terminating SBCL on EOF
3961 * non-verbose GC by default
3962 * There is no more "sbcl" shell script; the sbcl file is now the C
3963 runtime executable (just like CMU CL).
3964 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3966 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3967 symbol and package information as Lisp native symbol and package objects
3968 instead of strings naming symbols and strings naming packages. This way,
3969 whenever packages are renamed (as in warm init), debug information is
3970 transformed along with everything else.
3971 * tweaked the optimization policy declarations which control the building
3972 of SBCL itself. Now, among other things, the system no longer saves
3973 source location debugging information. (This helps two problems at once
3974 by reducing SBCL size and by keeping SBCL from trying to look for its
3975 sources -- which may not exist -- when reporting errors.)
3976 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3977 debugging and testing purposes
3978 * cleaned up printing, making the printer call PRINT-OBJECT for
3979 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3980 methods, giving nearly-ANSI behavior
3981 * converted almost all special variables to use *FOO* naming convention
3982 * deleted PARSE-TIME functionality, since it can be done portably
3983 * moved some files out of cold init into warm init
3984 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3986 * regularized formatting of source files
3987 * added an install.sh script
3988 * fixed ridiculous memory usage of cross-compiler by making
3989 compiler/alloc.lisp not try to do pooling unless it can hook
3990 itself into the GC of the cross-compilation host. Now the system
3991 builds nicely on my old laptop.
3992 * added :SB-ALLOC in target-features.lisp-expr
3993 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3994 was not implemented)
3995 * re-did condition handling and note reporting in the compiler. Notes
3996 are no longer handled by signalling conditions. Style warnings
3997 and warnings are handled more correctly and reported in such a way
3998 that it's easy to find one or the other in your output (so that you
3999 can e.g. figure out which of many problems caused COMPILE-FILE to
4001 * changed the severity of several compiler warnings from full WARNING
4002 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4003 compiler note reporting so that it doesn't use the condition system
4004 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4005 COMPILE-FILE command)
4006 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4007 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4008 no longer supported, since their implementation was deeply intertwingled
4009 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4010 * removed bogus "support" for compiler macros named (SETF FOO), and
4011 removed the compiler macro for SETF INFO (but only after making a fool
4012 of myself on the cmucl-imp mailing list by posting a bogus patch for
4013 DEFINE-COMPILER-MACRO..)
4014 * Compiled files containing forms which have side effects on the Lisp
4015 reader (such as DEFPACKAGE forms) are now handled more correctly.
4016 (Compiler queuing of top level lambdas has been suppressed by setting
4017 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4018 * deleted various currently-unused source files, e.g. gengc.lisp. They
4019 may be added back at some point e.g. when porting to other architectures,
4020 but until they are it's distracting to distribute them and to try to
4022 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4023 there were so many of them they're just distractions, and UNCROSS is
4024 known to be able to handle the current sources
4025 * moved PROFILE functionality into TRACE, so that it will be clear
4026 how the wrapping and unwrapping of functions when you profile them
4027 interacts with the wrapping and unwrapping of functions when you
4028 trace them. (Actually, the functionality isn't there yet, but at least
4029 the interface specification is there. Hopefully, the functionality will
4030 arrive with some future maintenance release.)
4031 * removed host-oops.lisp
4032 * changed signature of QUIT function to allow UNIX-CODE argument
4033 * fixed READ-SEQUENCE bug
4034 * tweaked verbose GC output so that it looks more like the progress
4035 output that ANSI specifies for functions like LOAD
4036 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4037 * added <http://sbcl.sourceforge.com> to the banner information printed by