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 * bug fix: an error is signaled for attempts to displace arrays with
30 incompatible element types (thanks to Mario Mommer)
31 * Improvements to the Windows port:
32 ** floating point exceptions are now reported correctly.
33 ** stack exhaustion detection works partially.
34 ** more accurate GET-INTERNAL-REAL-TIME.
35 ** better RUN-PROGRAM behaviour in case of errors in the child
37 ** PROBE-FILE now simplifies pathnames correctly.
38 ** DIRECTORY now works correctly with :WILD-INFERIORS.
39 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
40 1st 1970 (although time timezone data will be unreliable).
41 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
43 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
44 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
45 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
47 * bug fix: two potential GC deadlocks affecting threaded builds.
48 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
49 returns T (reported by Anton Kazennikov)
50 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
51 with non-variable places
52 * bug fix: remove a race condition in the setting of
53 funcallable-instance functions, this should make threaded CLOS
54 code more stable against memory faults.
55 * bug fix: corruption of specials when unbinding is interrupted by an
56 asynchronous unwind (reported by Hannu Koivisto)
57 * improvement: the debugger will now also display local variables that
58 are only used once, for code compiled with a DEBUG optimization quality
61 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
62 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
63 * incompatible change: External-format support for FFI calls. The
64 SB-ALIEN:C-STRING no longer implies an ASCII
65 external-format. Instead the string is subject to external-format
66 conversion. Additionally return values of type SB-ALIEN:C-STRING
67 are by default of type (SIMPLE-ARRAY CHARACTER), not
68 SIMPLE-BASE-STRING. For an alien type that behaves like the old
69 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
70 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
71 * incompatible change: SB-EXT package no longer contains the
72 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
73 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
75 * incompatible change: the single-stepper is no longer available
76 on Alpha, Mips and Sparc platforms.
77 * minor incompatible change: the direct superclasses of
78 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
79 not (STANDARD-OBJECT FUNCTION). This makes the
80 class-precedence-lists of GENERIC-FUNCTION and
81 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
83 * minor incompatible change: the default stream external format on
84 non-unicode SBCL is no longer detected from the locale, but is always
86 * new feature: Add a version of evaluator that uses an interpreter instead
87 of the compiler. EVAL still uses the compiler by default, to switch it
88 to use the interpreter, set the value of the variable
89 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
90 * minor incompatible change: the single-stepper REPL has been merged
91 with the normal debugger (see the "Stepping" heading of the debugger help
92 for more details). The debugger command STEP will no longer switch
93 to the single-stepper REPL.
94 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
96 * bug fix: loading of default sysinit file works. (thanks to Leonid
98 * bug fix: better detection of circularities in the file-compiler.
99 (reported by Marco Monteiro)
100 * bug fix: the CL pathname functions now work with files that have
101 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
102 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
103 systems with Unix98 pty semantics.
104 * bug fix: ASDF-INSTALL will now work with bsd tar.
105 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
107 * bug fix: timers expiring in dead threads no longer cause a
108 type-error (reported by Paul "Nonny Mouse").
109 * bug fix: thanks to more lightweight single-stepper instrumentation,
110 code compiled with (DEBUG 3) will compile and execute significantly faster,
111 and will have more accurate type-inferencing than before
112 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
113 whose bindings are modified
114 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
115 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
116 ** replace dummy implementations of CL:MACHINE-INSTANCE and
117 CL:SOFTWARE-VERSION with proper version
119 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
120 * feature: implemented the READER-METHOD-CLASS and
121 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
122 as specified by AMOP.
123 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
125 * optimization: faster LOGCOUNT implementation on x86 and x86-64
126 (thanks to Lutz Euler)
127 * optimization: hashing of general arrays and vectors has been
128 improved. (reported by Any Fingerhut)
129 * enhancement: SB-INTROSPECT is now able to find definitions of
130 profiled functions. (thanks to Troels Henriksen)
131 * enhancement: compiler-macro expansion applies now to FUNCALL forms
132 as well, allowing compiler-macros for SETF-functions to expand.
133 * enhancement: step-instrumentation no longer wraps known
134 single-value functions with multiple-value context, allowing
135 better type inference.
136 * fixed bug #337: use of MAKE-METHOD in method combination now works
137 even in the presence of user-defined method classes. (reported by
138 Bruno Haible and Pascal Costanza)
139 * fixed bug #339(c): if there are applicable methods not part of any
140 long-form method-combination group, call INVALID-METHOD-ERROR.
141 (reported by Bruno Haible)
142 * fixed bug #361: the :FUNCTION initarg in the protocol for
143 initialization of methods can now be used to override
144 internally-produced optimized functions. (reported by Bruno
146 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
147 system-provided lambda expression no longer cause warnings about
148 unbound #:|pv-table| symbols.
149 * bug fix: improved the handling of type declarations and the
150 detection of violations for keyword arguments with non-constant
152 * bug fix: potentially erronous calls to PATHNAME and
153 MERGE-PATHNAMES were being flushed in some cases.
154 (reported by Richard Kreuter)
155 * bug fix: compiled calls to TYPEP were mishandling obsolete
156 instances. (reported by James Bielman and Attila Lendvai)
157 * bug fix: format strings with ~> without matching ~< no longer
158 trigger an AVER, but signal an understandable error instead.
159 (reported by Antonio Martinez)
160 * bug fix: specifying an output-file without a pathname-type for
161 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
162 of input-file instead of "fasl". (reported by Robert Dodier)
163 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
164 (reported by James Y Knight).
165 * bug fix: compiler-macros-function did not consider the environment
166 argument for shadowing by local functions.
167 * bug fix: compiler-macros expansion was inhibited by local INLINE
169 * bug fix: inline expansions of known functions were subject to
170 step-instrumentation in high debug policies, leading to problems
172 * bug fix: compiler failed to differentiate between different CONS
174 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
175 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
176 * bug fix: #368: incorrect use of expressed vs. upgraded array
178 * bug fix: #306a: more precise unions of array types.
179 * thread-safety improvements:
180 ** CONDITION-WAIT could return early on Linux, if the thread was
181 interrupted and subsequently continued with SIGCONT.
182 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
184 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
185 * added support for the ucs-2 external format. (contributed by Ivan
187 * minor incompatible change: pretty printing of objects of type
188 (cons symbol) is, in the default pprint-dispatch-table, now
189 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
191 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
192 called later in a class's lifetime, possibly as late as when the
193 first instance of the class is created. Previously,
194 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
195 class became finalizeable.
196 * fixed bug: FILE-POSITION sometimes returned inconsistent results
197 for multibyte external-format streams. (thanks to "vbzoli")
198 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
199 with :ALLOCATION :CLASS inherited from superclasses of the
201 * fixed bug: anonymous classes can now be created using the :NAME
202 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
203 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
204 * fixed bug: core-files saved with :EXECUTABLE T can again be
205 executed when SBCL_HOME isn't set. (reported by James Knight)
206 * fixed bug: toplevel LOCALLY forms with declarations could
207 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
208 * fixed bug: printing from several different threads using different
209 values of *print-case* could cause invalid output, due to
210 some internal special variables of the printer not being bound
211 thread-locally (reported by Max Mikhanosha)
212 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
213 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
214 (reported by Pascal Costanza)
215 * fixed bug: FINALIZE-INHERITANCE is called from
216 REINITIALIZE-INSTANCE on classes when the class has previously
217 been finalized, as required by AMOP.
218 * minor code generation optimizations:
219 ** better register allocation in CLOS dispatching functions
220 ** overflow detection when coercing signed bytes to fixnums on x86-64
221 ** is now implemented with one IMUL instruction instead of three shifts
222 ** more efficient bit-vector access on x86 and x86-64
223 ** more efficient access to raw structure slots on x86 and x86-64
224 * fixed some bugs revealed by Paul Dietz' test suite:
225 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
228 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
229 * feature: thread support on Solaris/x86, and experimental thread support
231 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
233 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
234 default method for SLOT-UNBOUND.
235 * minor incompatible change: prevent the user from specializing the
236 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
237 somewhat counter to the intent of the protocol, I (CSR) think, and
238 additionally it just doesn't work in SBCL as currently
239 implemented, thanks to optimizations (that are always valid for
240 the other three SLOT-VALUEish functions, but not for the setter).
241 * minor incompatible change: the :SB-LDB feature is now enabled by
242 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
243 the low-level debugger.
244 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
245 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
246 down to an SB-SYS:FD-STREAM, allowing direct communication in
247 more cases. Temporary files and pipes are still used as a fallback
249 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
250 on the non-reentrant C functions localtime(3) and gmtime(3).
251 * bug fix: global optimization policy was not visible in LOCALLY and
253 * bug fix: class objects can be used as specializers in methods.
254 (reported by Pascal Costanza)
255 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
256 with a type error. (reported by blitz_ on #lisp)
257 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
258 failed with a type error. (reported by Pascal Bourguignon)
259 * bug fix: merging pathnames against defaults with :DIRECTORY
260 starting with '(:RELATIVE :BACK) should preserve the :BACK.
261 (reported by James Y Knight)
262 * bug fix: saving large (>2GB) cores on x86-64 now works
263 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
264 constant index and a (simple-array (signed-byte 32)) array
265 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
266 error (patch by Robert J. Macomber)
267 * feature: TIME now displays the amount of run-time spent in GC
268 * bug fix: The debugger now does a better job of respecting
269 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
270 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
271 workaround for bug 403.)
272 * bug fix: floating point exception handling now works on FreeBSD
273 (thanks to NIIMI Satoshi)
274 * fixed some bugs revealed by Paul Dietz' test suite:
275 ** MISC.641: LET-conversion were not supposed to work in late
277 * improvements to the Win32/x86 port:
278 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
279 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
281 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
282 * new feature: source path information is generated for macro-expansion
283 errors for use in IDE's like Slime (thanks to Helmut Eller)
284 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
285 * bug fix: compiler does not loop forever on an invalid type in
287 * improvement: compilation of most CLOS applications is significantly
289 * optimization: added a limited bytecode compiler for simple toplevel
290 forms, speeding up compilation and FASL loading
291 * bug fix: the statistical profiler now properly distinguishes anonymous
294 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
295 * minor incompatible change: in sbcl-0.9.11 (but not earlier
296 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
297 into subclasses of the finalized class. Now user calls to
298 FINALIZE-INHERITANCE finalize just the one class, and calls by the
299 system return before any subclasses are finalized.
300 * minor incompatible change: The reader no longer ignores errors
301 regarding non-existent packages in #+ and #- feature tests.
302 * new feature: command line options --no-sysinit, --no-userinit to
303 inhibit loading the corresponding init files
304 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
305 for sending data through UDP sockets (thanks to François-René Rideau)
306 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
307 error is signalled instead (thanks to François-René Rideau)
308 * minor incompatible change: Error signalling behaviour of lexical
309 operations violating package locks has changed slightly. Refer to
310 documentation on package locks for details.
311 * enhancement: EVAL can process IF-expressions without resorting to the
313 * bug fix: Some operations involving SIN, COS, or TAN weren't being
314 constant-folded properly due to missing out-of-line functions.
315 (reported by Mika Pihlajamäki)
316 * bug fix: LISTEN sometimes returned T even in cases where no data was
317 immediately available from the stream
318 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
319 were reversed. (reported by Levente Mészáros)
320 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
321 when given a vector displaced to an adjustable array. (reported
323 * bug fix: derivation of float boundaries from numbers outside the
324 appropriate float range (reported by John Wiseman)
325 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
327 * bug fix: precomputing cache entries for generic functions with
328 some subclasses of specializers as yet invalid does not attempt to
329 fill a cache line with a negative offset. (reported by Levente
331 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
332 allow condition class objects as arguments to DOCUMENTATION and
333 (SETF DOCUMENTATION); only find and set documentation for
334 structure names for the STRUCTURE doc-type. (suggested by Gary
336 * improvements to the Win32/x86 port:
337 ** (user-homedir-pathname) and default initialization file
338 locations now know about the user's "Documents and Settings"
339 directory (thanks to Yaroslav Kavenchuk)
340 ** run-program is implemented (thanks to Mike Thomas)
341 ** sockets support (thanks to Timothy Ritchey)
342 ** better backtrace support (thanks to Alastair Bridgewater)
343 ** sb-grovel supported
344 ** asdf-install and sb-posix work somewhat
345 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
346 * improvements to the Solaris/x86 port:
347 ** works on Solaris 11/Solaris Express
348 ** floating-point exception handling support
349 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
350 * fixed some bugs revealed by Paul Dietz' test suite:
351 ** REMOVE-METHOD returns its generic function argument even when
352 the method is not one of the generic functions' methods.
353 ** objects declared as MEMBER types can be admissible arguments to
355 ** printing characters should simply be printed by the FORMAT ~:C
357 ** compiler failure when compiling functions with hairy constant
358 defaults for optional parameters.
359 ** compiler produces wrong code when MAYBE-INLINE-expanding a
360 function, which is already optimized.
362 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
363 * new platform: experimental support for SBCL x86/Darwin, including
364 MacOS X 10.4.5 on Intel.
365 * new feature: Unicode character names are now known to the system
366 (through CHAR-NAME and NAME-CHAR).
367 * new feature: the filesystem location of SBCL's core file is
368 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
369 * minor incompatible change: the contrib modules SB-POSIX and
370 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
371 this change is to make it easier to distribute
372 location-independent binaries.
373 * bug fix: as implied by AMOP, standardized classes no longer have
374 slots named by external symbols of public packages. (reported by
376 * optimization: calling functions via constant symbols -- as in
377 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
378 via the function object as in (FUNCALL #'FOO).
379 * optimization: on x86 and x86-64, the calling convention for the
380 case of dealing with an unknown number of values has been altered
381 to be friendlier to the prediction heuristics implemented,
382 particularly with reference to CALL and RET pairing. (thanks to
383 Alastair Bridgewater)
384 * optimization: on x86, the code for access to thread-local symbol
385 values and binding/unbinding of thread-local symbols is smaller.
386 (thanks to Alastair Bridgewater)
387 * enhancement: CONSTANTP is now able to determine constantness of
388 more complex forms, including calls to constant-foldable standardized
389 functions and some special forms beyond QUOTE.
390 * fixed bug: occasional GC crashes on Solaris/x86
391 * optimization: x86-64 supports stack allocation of results of simple
392 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
393 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
394 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
395 (thanks to James Knight)
396 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
397 by the standard (thanks to Stephen Compall)
399 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
400 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
401 be used for bundling the runtime and the core file into one
402 executable binary. This feature is not currently supported on all SBCL
403 platforms. (thanks to James Bielman and NIIMI Satoshi)
404 * new feature: a generational or ephemeral garbage collector is now
405 the default on the PowerPC platform (both Linux and Darwin). The
406 old Cheney (stop and copy) collector is a build-time option.
407 (thanks to Cyrus Harmon, after Raymond Toy)
408 * minor incompatible change: the method by which SBCL finds its
409 contributed modules has changed; it no longer relies on symbolic
410 links from an $SBCL_HOME/systems directory, but searches directly
411 in the subdirectories of $SBCL_HOME.
412 * enhancement: the dynamic heap size on the Linux/PPC platform is
413 markedly larger, even using the older Cheney garbage collector.
414 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
415 certain complicated string types. (reported by Gary King)
416 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
417 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
418 * fixed bug: DOCUMENTATION on structures no longer signals an
419 error if no structure type of the right name exists. (reported by
421 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
422 applicable non-standard primary or :AROUND method on
423 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
424 no longer cause unbound variable errors. (reported by Kevin Reid)
425 * fixed bug: metacircle resolution in cases where methods have slots
426 added before the slots from STANDARD-METHOD. (reported by Jean
428 * fixed bug: the Power PC assembly code for calling into lisp
429 sometimes computed its return address wrongly (depending on the
430 15th bit of the address, fixed at link time). This used to
431 manifest itself in a segmentation violation while building PCL.
432 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
433 many others over the years)
434 * fixed bug: ROOM no longer reports silly numbers for stack usage if
435 the stack pointer (treated as a signed integer) is negative.
436 (thanks to Peter van Eynde)
438 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
439 * new platform: experimental support for the Windows operating
440 system has been added. (thanks to Alastair Bridgewater)
441 * fixed several bugs in and robustified the PPC FFI (including
442 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
443 * bug fix: allow non-simple string symbol names (reported by Paul
445 * bug fix: interrupt handling on NetBSD (thanks to Richard M
447 * bug fix: saving a core corrupted callbacks on x86/x86-64
448 * bug fix: closed a loophole in metacircularity detection and
449 grounding in the PCL implementation of CLOS.
450 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
451 (reported by tomppa on #lisp)
452 * bug fix: clear the direction flag on Lisp -> C transitions, as
453 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
454 (reported by Andrej Grozin and Hendrik Maryns)
455 * optimization: major improvements to GC efficiency on GENCGC platforms
456 * optimization: faster implementation of EQUAL
457 * optimization: emit more efficient opcodes for some common
458 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
459 * optimization: several other minor code-generation improvements on x86-64
460 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
462 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
463 * minor incompatible change: (SETF CLASS-NAME) and (SETF
464 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
465 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
466 by ANSI as a generic function, and for consistency (SETF
467 GENERIC-FUNCTION-NAME) is treated likewise.
468 * fixed bug #233.b: make constraint propagation notice when a variable
469 value is changed after it is referenced but before it is used
470 * fixed bug #296: no more arbitrary behaviour from filenames with
471 odd characters as --load arguments. (reported by Adam Warner)
472 * fixed bug #390: :CHARACTER-SET pathname components now work as
473 expected. (reported by Tim Daly Jr)
474 * fixed bug #391: complicated :TYPE intersections in slot
475 definitions no longer cause an error in PCL internals.
476 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
477 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
478 returning the number of octets which would be written to the
479 file-stream. (thanks to Robert J. Macomber)
480 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
481 arguments to the internal stream functions. (thanks to David
483 * bug fix: stack exhaustion is now handled on the x86/SunOS
484 platform. (thanks to Daisuke Homma)
485 * bug fix: more accurate ROOM results on GENCGC platforms
486 * optimization: improved type inference for arithmetic-for
487 index variables in LOOP
488 * optimization: faster floating-point SQRT on x86-64
489 * fixed some bugs revealed by Paul Dietz' test suite:
490 ** DOCUMENTATION returns NIL instead of "" for method combinations
491 that don't have a docstring
493 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
494 * minor incompatible change: (SETF CLASS-NAME) and (SETF
495 GENERIC-FUNCTION-NAME) are no longer generic functions, and
496 therefore are not customizeable by user code (as seems to be at
497 least permitted and maybe required by AMOP). As a consolation,
498 however, the SBCL implementation of these functions now calls
499 REINITIALIZE-INSTANCE as specified by AMOP.
500 * bug fix: slot-definition documentation is propagated as per ANSI
501 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
502 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
503 argument, as do eslotd initialization methods. (from Pascal
504 Costanza's "Closer" project)
505 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
506 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
508 * bug fix: it is now possible to have more than one subclass of
509 STANDARD-GENERIC-FUNCTION without causing stack overflow.
510 (reported by Bruno Haible, Pascal Costanza and others)
511 * bug fix: the dependent update protocol now works for generic
512 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
514 * bug fix: condition-class instances corresponding to
515 DEFINE-CONDITION forms are now created eagerly. (reported by
516 Kalle Olavi Niemitalo on comp.lang.lisp)
517 * bug fix: floating point printing is more accurate in some
518 circumstances. (thanks to Simon Alexander)
519 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
520 merged with *DEFAULT-PATHNAME-DEFAULTS*.
521 * bug fix: callbacks on OS X now preserve stack-alignment.
522 (thanks to Cyrus Harmon)
523 * enhancement: the x86-64 disassembler is much better at
524 disassembling SSE instructions. (thanks to Lutz Euler)
525 * enhancement: CHECK-TYPE on a variable now allows type-inference
526 (thanks to Vincent Arkesteijn)
527 * optimization: improved performance of EUC-JP external format.
528 (thanks to NIIMI Satoshi)
529 * optimization: performance improvements to IO on file streams of
530 :ELEMENT-TYPE CHARACTER
531 * optimization: much faster memory allocation on x86-64
532 * optimization: faster garbage collections (latency and throughput)
534 * optimization: faster bignum subtraction and division on x86 and x86-64
535 (thanks to Lutz Euler)
536 * optimization: more accurate type-inference for loops that use a
537 floating point index variable or a negative step.
539 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
540 * bug fix: add a workaround to SBCL looping infinitely at startup on
541 Linux kernels with apparently buggy implementations of personality().
542 (thanks to Svein Ove Aas)
543 * bug fix: Unicode symbols are correctly printed in LDB backtraces
544 (thanks to David Lichteblau)
545 * bug fix: local bindings shadow global symbol macros for
546 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
547 * optimization: non-open coded uses of numeric comparison operators
548 (e.g. >) no longer cons when called with more than one parameter
549 on platforms supporting dynamic-extent allocation.
550 * enhancement: saving cores with foreign code loaded is now supported
551 on MIPS/Linux in addition to the previously supported platforms.
552 * bug fix: FIND-RESTART now tests for activity, not applicability when given
553 a restart object as identifier. (reported by Helmut Eller for CMUCL)
554 * bug fix: division by zero in sb-sprof when no samples were collected
555 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
556 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
557 (thanks to Alexander Kjeldaas)
558 * new feature: ignoring the return values of destructive functions
559 like NREVERSE signals a compile-time style-warning.
560 (thanks to Kevin Reid)
561 * new feature: the alignment of alien structure fields can be
562 explicitly specified. (thanks to Cyrus Harmon)
563 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
564 and dump core on SIGQUIT
566 ** incompatible change: threads do not inherit values of specials
567 from their parents (see manual)
568 ** bug fix: threads stacks belonging to dead threads are freed by the
569 next exiting thread, no need to gc to collect thread stacks anymore
570 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
571 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
572 ** bug fix: dynamic variable and thread start related gc lossage
573 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
575 * fixed some bugs revealed by Paul Dietz' test suite:
576 ** SUBTYPEP is slightly more accurate on heinously complicated
577 CONS types where some of the members have uncertain (in the
578 NIL, NIL sense) type relationships to each other.
580 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
581 no longer purified unless :PURIFY T is explicitly specified.
582 ** Non-purified cores are significantly smaller than before
584 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
585 * new feature: timers based on Zach Beane's excellent timer package
586 * added support for the following external formats: koi8-u,
587 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
588 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
589 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
590 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
591 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
592 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
593 * incompatible change: a threaded SBCL will no longer revert to
594 non-threaded mode on non-NPTL systems, but refuse to start entirely.
595 * bug fix: interrupts are disabled until startup is complete; no
596 more sigsegvs when receiving a signal to soon
597 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
599 * bug fix: add a workaround for the memory randomization features in
600 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
601 workaround will only be in effect on systems with the proc filesystem
603 * bug fix: printing objects of type HASH-TABLE signals a
604 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
606 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
607 have been running for over 50 days. (reported by Gilbert Baumann)
608 * bug fix: the logic for getting names of functions gets less
609 confused when confronded with alternate-metaclass
610 funcallable-instances. (reported by Cyrus Harmon)
611 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
612 consistent, even on internal alternate-metaclass objects.
613 * bug fix: flush closure information collected by physical
614 environment analysis prepass before the main pass. (bug reported
616 * bug fix: compiler pack phase does not modify a hashtable, which is
617 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
618 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
619 may be expanded. (reported by Alexander <malishev> on c.l.l)
620 * bug fix: no more style-warnings when compiling code using LAST
621 under high-SPEED low-SPACE settings. (reported by David Wallin
623 * fixed some incompatibilities between SBCL's MOP and the MOP
625 ** the METAOBJECT class is now implemented;
626 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
627 STANDARD-OBJECT, as required;
628 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
629 now compatible (as required by VALIDATE-SUPERCLASS); there
630 remains a consistency requirement over the presence or absence
631 of the FUNCTION class in the superclass list of finalized
632 classes; see the manual for more details;
633 ** the :AROUND method for COMPUTE-SLOTS on
634 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
635 requested slot ordering.
637 ** bug fix: parent thread now can be gc'ed even with a live
639 ** bug fix: binding a special with PROGV to no value is not
640 the same as that symbol not having been bound (thanks to
642 ** bug fix: binding specials is thread safe (thanks to
644 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
645 and SB-SPROF do not die with 'no handler for signal XX in
646 interrupt_handle_now(..)' anymore
647 ** bug fix: WITH-TIMEOUT works with multiple running threads
648 * fixed some bugs revealed by Paul Dietz' test suite:
649 ** ENSURE-GENERIC-FUNCTION should take a method class object for
650 the :method-class keyword argument.
652 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
653 * new port: the Solaris operating system on x86 processors is now
654 mostly supported, though some rough edges in the environment
655 remain. (thanks to Daisuke Homma)
656 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
657 space for its heap. (thanks to Thiemo Seufer)
658 * optimization: SBCL on MIPS platforms now supports dynamic-extent
659 closures. (thanks to Thiemo Seufer)
660 * minor incompatible change: eof selects abort in the debugger.
661 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
662 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
664 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
665 deprecated, and will go away in a future revision of SBCL.
666 * minor incompatible change: GC-ON and GC-OFF are no longer
667 implemented with a counter, it does not matter how many times gc
668 is switched on or off
669 * bug fix: discriminating functions for generic function classes
670 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
671 make invalid assumptions about method precedence order. (reported
673 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
674 platforms. (thanks to Thiemo Seufer)
675 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
676 * bug fix: correct pathname printing with printer escaping is on.
677 (thanks to Kevin Reid)
678 * bug fix: complex VOP definitions in "user-space" no longer trigger
679 package locks. (reported by Zach Beane)
680 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
681 for funcallable-instance functions, and is no different from
683 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
684 characters in the current readtable. (reported by Nicholas Neuss)
685 * bug fix: SUBTYPEP on various CONS types returns more a more
686 accurate acknowledgment of its certainty.
687 * optimizations: REMOVE-DUPLICATES now runs in linear time on
688 lists in some cases. This partially fixes bug 384.
689 * flush all standard streams before prompting in the REPL and the
691 * bug fix: signal handling and triggering gc do not conflict
692 directly anymore, in particular a high frequency sb-sprof does
693 not prevent gc from running
694 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
695 approximation for timezone and DST information between the
696 universal time epoch and the smallest negative 32-bit time_t.
697 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
698 year 1899 so long as the encoded time is non-negative.
699 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
700 the correct answer for non-constant rotate amounts when performing
701 an inline 32-bit rotation.
703 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
704 there is only one thread in the session
705 ** bug fix: memory leak for streams created in one thread and
706 written to in another
707 ** bug fix: lockup when compiled with gcc4
708 ** bug fix: race that allows the gc to be triggered when gc is
710 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
711 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
713 ** bug fix: finished threads are gc'ed properly
714 * fixed some bugs revealed by Paul Dietz' test suite:
715 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
716 has arguments with a different set of applicable methods from
717 the orignal arguments.
718 ** The type error thrown by MAP now has a correct expected-type
720 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
721 name a compiled function.
722 ** Three MISC tests where a large bignum was improperly coerced to
723 a float that couldn't represent that bignum during type
724 derivation were fixed.
725 ** SUBTYPEP can now handle types involving the negation of a
726 list-form FUNCTION type.
727 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
728 as (COMPLEX (AND RATIO (NOT FIXNUM))).
729 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
731 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
732 * New feature: Experimental support for bivalent streams: streams
733 opened with :element-type :default now allow character and binary
734 (unsigned-byte 8) I/O
735 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
736 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
738 * bug fix: no more highly sporadic "couldn't check whether ~S is
739 readable" when reading a stream and an interrupt hits in the middle
740 of a select system call
741 * compiler better recognizes complex arrays (reported by Eduardo
743 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
744 for variables on SBCL built with linkage-tables. (reported by Luis
746 * various error reporting improvements.
747 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
748 (Thanks to Thiemo Seufer)
749 * bug fix: nested reader invokations work correctly
750 * bug fix: it is possible to have simultaneous references to foreign
751 code and foreign data with the same name.
753 ** added x86-64 support
754 ** incompatible change: the threading api now works with thread
755 objects instead of thread ids
756 ** bug fix: threads are protected from signals and interruption when
757 starting up or going down
758 ** bug fix: a race where an exiting thread could lose its stack to gc
759 ** bug fix: don't halt on infinite error in threads if possible
760 ** fixed numerous gc deadlocks introduced in the pthread merge
761 ** bug fix: fixed thread safety issues in read and print
762 ** bug fix: debugger doesn't hang on session lock if interrupted at
763 an inappropriate moment
764 ** bug fix: run-program is now thread safe(r)
765 ** bug fix: inner with-recursive-lock no longer releases the mutex
766 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
767 * fixed some bugs revealed by Paul Dietz' test suite:
768 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
769 EXPECTED-TYPE slots filled.
770 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
772 ** MAKE-CONDITION accepts classes as type-designators.
773 ** COMPILE may never return NIL.
774 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
775 range before calling Unix time functions
777 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
778 * numerous signal handling fixes to increase stability
779 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
780 * minor incompatible change: we now correctly canonize default
781 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
782 as per the MOP, rather than the historical (INITARG INITFUNCTION
783 INITFORM). (reported by Bruno Haible)
784 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
785 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
786 for more information.
787 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
788 pathname is a directory pathname.
789 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
790 * dynamic space size on PPC has been increased to 768Mb. (thanks to
792 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
793 :METACLASS argument in addition to a class name. (reported by
794 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
795 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
796 (reported by Bruno Haible; patch from Gerd Moellmann)
797 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
799 * bug fix: more cleanups to the floating point exception handling on
800 x86-64 (thanks to James Knight)
801 * bug fix: the compiler does not try to constant fold calls of
802 COERCE and BIT-* functions when they return freshly constructed
803 objects. (reported by Nikodemus Siivola and Paul Dietz)
804 * optimization: improved the MIPS versions of generic (in the
805 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
806 * optimization: direct conversion of (unsigned-byte 32) to floats on
807 the PowerPC platform.
808 * optimization: structure instances with raw slots now use less
809 memory, and probably show better memory locality. (thanks to
811 * optimization: DYNAMIC-EXTENT declarations for lists and closures
812 are treated as requests for stack allocation on the x86-64,
813 Alpha-32, PPC and SPARC platforms.
814 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
815 the wrong file descriptor; implementation of SOCKET-OPEN-P.
816 (thanks to Tony Martinez)
818 ** gcing a dead thread can no longer lead to lockups
819 ** threads block signals until they are set up properly
820 ** errno is no longer shared by threads
821 ** interrupt-thread restores the eflags register on x86
822 ** fixed some lockups due to gc/thread interaction
823 * fixed some bugs revealed by Paul Dietz' test suite:
824 ** invalid dotted lists no longer raise a read error when
826 ** signal an error if a symbol that names a declaration is used
827 as the name of a type, or vice versa
828 ** allow using the (declare (typespec var*)) abbreviation for
829 (declare (type typespec var*)) with all type specifiers
830 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
831 ** always return NIL from PPRINT-POP when OBJECT is NIL
832 ** don't signal errors when pretty-printing malformed LABELS,
833 FLET or MACROLET forms
834 ** declarations in a DOLIST body are also in scope for the
836 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
838 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
841 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
842 * fixed cross-compiler leakages that prevented building a 32-bit
843 target with a 64-bit host compiler.
844 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
845 opened with :IF-EXISTS :OVERWRITE.
846 * fixed bug 281: error for an invalid qualifier in a short-form method
847 combination method is not signalled until the faulty method is called.
848 * bug fix: iteration variable type inferrer failed to deal with open
849 intervals. (reported by Alan Shields)
850 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
851 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
852 or more runtime options were provided to the sbcl binary.
853 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
854 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
855 * optimization: there's now a fast-path for fixnum arguments in the
856 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
857 * optimization: the code generated on x86-64 is more compact thanks
858 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
859 * bug fix: floating-point exception handling now partly works on
860 x86-64. (Thanks to James Knight)
861 * improvement to the MIPS backend from Thiemo Seufer: C-style
862 64-bit long long arguments and return values to alien functions
864 * fixed some bugs revealed by Paul Dietz' test suite:
865 ** the type-error signalled from WARN has a filled-in DATUM slot.
866 ** the type-error required when a stream is not associated with
867 a file has the stream as its datum.
868 ** type-errors on single-floats on x86-64 no longer have
869 :INVALID-OBJECT as the datum
870 ** the type-errors signalled for invalid function names now have
871 a correct expected type
872 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
873 for structures defined with a :TYPE. Documentation strings for
874 typed structures are no longer immediately discarded
875 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
876 broadcast streams and synonym streams. FILE-LENGTH now also works
877 on broadcast streams.
879 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
880 * incompatible change: the --noprogrammer option, deprecated since
881 version 0.7.5, has been removed. Please use the equivalent
882 --disable-debugger option instead.
883 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
885 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
886 inoperational for a while now) has been completely removed.
887 * null lexical environments are now printed as #<NULL-LEXENV>,
888 significantly reducing the amount of clutter in typical backtraces.
889 * documentation on weak pointers, finalization, and after GC hooks
890 has been added to the manual.
891 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
892 as other specialized array types, is much faster. SUBSEQ and
893 COPY-SEQ on such arrays have also been sped up.
894 * optimization: EQL is now more efficient when at least other argument
895 is known to be of type (OR FIXNUM (NOT NUMBER)).
896 * fixed bug: the runtime is now less vulnerable to changes in the
897 size of the SBCL object on OS X, and virtual memory is reserved for
898 all spaces that need to be at a fixed address.
899 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
900 * fixed bug: finalizers and after GC hooks that cause consing are now
902 * fixed bug: compiler error messages and summaries are now printed to
903 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
904 * fixed inference of the upper bound of an iteration variable.
905 (reported by Rajat Datta).
906 * fixed bug 211e: calling local functions with duplicated constant
907 keyword argument no longer causes a bogus style warning about an
909 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
910 ftype declaration to be disregarded. (reported by Dave Roberts)
911 * fixed bug 373: caused by erronous compilation of references to alien
912 variables in the runtime on ppc/darwin.
913 * fixed bug 376: CONJUGATE type deriver.
914 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
915 (reported by Baughn on #lisp)
916 * a cross-compiler bug on non-x86 platforms has been identified and
917 fixed. (thanks to Bruno Haible)
918 * improvements to the MIPS runtime code for increased stability.
919 (thanks to Thiemo Seufer)
920 * increased the maximimum compact environment size to allow
921 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
922 * partial workaround for bug 135: don't name the function we're
923 calling for hairy cases of EVAL, so as not to accumulate one environment
924 entry per call to EVAL. (reported by Kevin Reid)
925 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
926 * optimization: type testing for non-vector arrays should be faster.
927 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
929 * bug fix: setting 31st element of a bit vector to zero did not work
931 * bug fix: redefining a class definition which failed due to a
932 previous accessor / function clash now works (but see BUGS entry
933 #380 for more problems in this area). (thanks to Zach Beane)
934 * the long form of DEFINE-METHOD-COMBINATION disables method group
935 checking when given a single method group with pattern *. (thanks
937 * on x86 compiler supports stack allocation of results of simple
938 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
939 * support for building and running on Mac OS X 10.4 "Tiger" has been added
940 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
941 * fixed some bugs related to Unicode integration:
942 ** the restarts for recovering from input and output encoding
943 errors only appear when there is in fact such an error to
945 * fixed some bugs revealed by Paul Dietz' test suite:
946 ** MISC.549 and similar: late transformation of unsafe type
947 assertions into derived types caused unexpected code
949 ** SCALE-FLOAT type deriver is less wrong.
950 ** type derivers for EXP, LOG and similar functions compute result
951 types for complex arguments better.
952 ** (MISC.563) CONJUGATE type deriver works for very restricted
954 ** out-of-line type testers for character strings are available.
955 ** EQUAL compiler transform understands specialness of objects
957 ** accessing double-floats stored on the stack now works on x86-64.
958 ** debugger internals could sometimes create invalid lispobjs,
959 resulting in GC crashes.
960 ** MISC.548: type check weakening can convert required type into
962 ** initialization forms for bindings are not in scope of free special
965 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
966 * incompatible change: thread support for non-NPTL systems has
967 been removed - locking is buggy and unreliable. A threaded
968 SBCL build will now warn at startup and refuse to create
969 new threads, unless futex support is detected in the kernel
970 * incompatible change: the top level REPL now has only an ABORT
971 restart associated with it, not TOPLEVEL and ABORT as it used to.
972 TOP and TOPLEVEL are now available as debugger commands for
973 returning to the top level.
974 * incompatible change: forms evaluated in the REPL now use the
975 global optimization policy.
976 * incompatible change: user- and system-initialization files are
977 no longer processed with LOAD, but by READ and EVAL; hence the
978 global optimization policy, startup package, readtable, etc,
980 * The .fasl file format number has been incremented because of
981 various incompatible changes.
982 * internal entry point details and argument counts no longer appear
983 in backtraces unless explicitly requested by setting
984 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
985 * built-in and standard functions no longer have names like "top
986 level local call to FOO".
987 * fixed bug 32: functions defined in non-null lexical environments
988 now have more legible printed representation
989 * fixed bug 33: functions defined in non-null lexical environemnts
990 are now more amenable to inspection by INSPECT.
991 * workaround for bug 354: XEPs no longer appear in backtraces unless
992 explicitly requested.
993 * fixed bug: receiving the signal which results from attempting to
994 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
995 SIGBUS on other *BSDs) on architectures where the C stack is also
996 the Lisp stack (x86 and x86-64) from foreign code no longer leads
997 to debugger confusion or wild instability. (reported by Cheuksan
999 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1000 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1001 (reported by Lutz Euler)
1002 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1003 compiled code. (reported by Paul Dietz)
1004 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1005 specialized parameter to a method to something that is not TYPEP
1006 the specializer is now possible.
1007 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1008 face of package deletion.
1009 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1010 pathname. (reported by David Tolpin on c.l.l)
1011 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1012 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1013 STRING-STREAM and FILE-STREAM, respectively.
1014 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1015 than previously; in addition, its test suite is now run on build.
1016 (thanks to Luke Gorrie)
1017 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1018 * optimization: added a immediate representation for single-floats
1020 * fixed some bugs revealed by Paul Dietz' test suite:
1021 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1022 ** attempting to create a package with a colliding nickname causes
1023 correctable errors to be signalled.
1024 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1025 ** several x86-64 backend bugs related to sign-extension of immediate
1028 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1029 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1030 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1032 * fixed loading of multiply forward-referenced layouts.
1033 (thanks to Cheuksan Wang)
1034 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1035 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1036 (see COMPILE-FILE documentation for details of :PRINT option)
1037 * fixed bugs 19 and 317: fixed-format floating point printing is
1038 more accurate. This also fixes a bug reported by Adam Warner
1039 related to the ~@F format directive.
1040 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1042 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1043 dispatch table if the from-char is a dispatch macro character.
1044 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1045 by the wordsize no longer ignore the last word. (reported by Lutz
1047 * fixed bug in type checking of dynamic-extent variables. (reported
1049 * optimization: sequence traversal functions use their freedom to
1050 coerce function designators to functions.
1051 * optimization: code with many calls to CLOS methods specialized on
1052 CLOS classes has had redundant type checks removed.
1053 * optimization: added declarations to speed up operations that access
1054 the internal character database (for example STRING-UPCASE)
1055 * optimization: comparison operations between floats and sufficiently small
1056 fixnums no longer create extra rationals
1057 * fixed some bugs related to Unicode integration:
1058 ** portions of multibyte characters at the end of buffers for
1059 character-based file input are correctly transferred to the
1060 start of the buffer at the next read.
1061 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1062 passing it through to OPEN.
1063 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1064 argument given to internal calls to OPEN.
1065 ** the built-in comment readers (introduced by character sequences
1066 ";" and "#|") are more forgiving to encoding errors; they will
1067 STYLE-WARN and then attempt to resync the stream at a character
1068 boundary. (thanks to Teemu Kalvas)
1069 * fixed some bugs in the x86-64 port:
1070 ** Negative short int return values from c-calls are sign-extended
1072 ** The stack is aligned to 16-bytes for c-calls, as required by
1073 the ABI. (thanks to Cheuksan Wang)
1074 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1075 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1076 for enums. (thanks to Vincent Arkesteijn)
1077 ** Multiple small optimizations and bugfixes for floating point
1079 * fixed some bugs revealed by Paul Dietz' test suite:
1080 ** Space, Tab, Linefeed, Return and Page have the invalid
1081 secondary constituent character trait.
1082 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1084 ** WITH-INPUT-FROM-STRING should only update the index place on
1086 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1087 works more reliably.
1088 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1089 with one-dimensional arrays with fill pointers.
1090 ** TYPE-OF failed on a complex with an integer realpart and a
1092 ** compiler failure during type inference for the code of form
1093 (IF (EQL X (THE ...)) ...) (MISC.535).
1095 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1096 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1097 platform. The port supports 61-bit fixnums, large memory spaces
1098 and reloading shared object files.
1099 * enhancement: saving cores with foreign code loaded is now
1100 supported on ppc/Darwin in addition to the previously supported
1102 * enhancement: the statistical profiler now walks deeper into the
1103 call stack for more meaningful call-graphs and accrued time
1104 reports (x86/x86-64 only). It also now reports time spent in
1106 * enhancement: it is now possible to trace most individual methods
1107 of a generic function in addition to tracing the generic function
1109 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1111 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1112 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1113 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1114 produces an error. (thanks to Vincent Arkesteijn)
1115 * bug fix: NAMESTRING on pathnames with :WILD components in their
1116 directories works correctly. (thanks to Artem V. Andreev)
1117 * fixed bug 125: compiler preserves identity of closures. (reported
1119 * bug fixed: functions with &REST arguments sometimes failed with
1120 "Undefined function" when compiled with (DEBUG 3). (reported by
1122 * bug fix: overflow during compiling of setting element of a bit
1123 vector with constant index and value. (reported by Timmy Douglas)
1124 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1125 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1126 * on x86 compiler partially supports stack allocation of dynamic-extent
1128 * GO and RETURN-FROM do not check the extent of their exit points
1129 when compiled with SAFETY 0.
1130 * fixed some bugs related to Unicode integration:
1131 ** encoding and decoding errors are now much more robustly
1132 handled; it should now be possible to recover even from invalid
1133 input or output to the terminal. (thanks to Teemu Kalvas)
1134 ** provided a first cut at implementing STRING-TO-OCTETS and
1135 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1136 ** altered the SB-MD5 contributed module slightly, changing the
1137 interface just enough for it to be supportable for builds where
1138 lisp characters are not eight bits.
1139 * fixed some bugs revealed by Paul Dietz' test suite:
1140 ** the FORMATTER-generated functions for ~V[ conditionals require
1141 the correct number of arguments.
1142 ** READ-FROM-STRING returns the mandated second value when applied
1143 to displaced strings.
1144 ** the #\Rubout and #\Backspace characters are treated as invalid
1145 constituent characters by the tokenizer.
1147 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1148 * new feature: reloading changed shared object files with
1149 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1150 * new feature: references to foreign variables and functions
1151 can now be compiled and loaded before the corresponding shared
1152 object file is loaded, as long as the foreign definitions are
1153 available at runtime.
1154 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1155 supported. (thanks to Dan Debertin)
1156 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1157 just keywords. (thanks to Vincent Arkesteijn)
1158 * fixed bug #331: structure-class instances corresponding to
1159 DEFSTRUCT forms are now created eagerly.
1160 * fixed bug #345: backtraces from calls to undefined functions work
1161 on x86 as well. Related bug #61 is now also partially fixed on x86
1162 (backtraces from throws to unknown catch tags.)
1163 * bug fix: lambda-list parsing is now stricter vrt. order and number
1164 of lambda-list keywords.
1165 * bug fix: as specified by AMOP, an error is signalled if a
1166 class-option appears multiple times in a DEFCLASS form. (reported
1168 * bug fix: RANDOM can be compiled when the compiler derives the type
1169 of its numeric argument as a disjoint set of small integers.
1170 (reported by Paul Dietz)
1171 * bug fix: starting a core saved with shared objects loaded when
1172 those objects are not available no longer causes threaded SBCL to
1173 hang. (reported by Sean Ross)
1174 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1176 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1177 argument, which must always be NIL. (reported by Kalle Niemitalo)
1178 * bug fix: printing 1.0d+23 no longer results in an error.
1179 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1180 * bug fix: structure slot setters preserve evaluation order. (thanks
1182 * fixed some bugs related to Unicode integration:
1183 ** RUN-PROGRAM can allow its child to take input from a Lisp
1184 stream. (reported by Stefan Scholl)
1185 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1186 locales. (reported by Ken Causey)
1187 * fixed some bugs revealed by Paul Dietz' test suite:
1188 ** INCF, DECF and REMF evaluate their place form as specified in
1190 ** FORMATTER expands ~{ ~} iteration directives with V or #
1191 parameters correctly.
1192 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1193 consequent uses no arguments correctly.
1194 ** the system has a partial understanding of the (COMPLEX RATIO)
1196 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1199 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1200 * new feature: a build-time option (controlled by the :SB-UNICODE
1201 keyword feature, enabled by default) for building the system with
1202 support for the entire 21-bit character space defined by the
1204 * new feature: the system now has rudimentary external-format
1205 support; the primary user-visible change at this time is that
1206 characters with the high bit set (such as lower-case-e-acute) will
1207 print correctly to a terminal in a UTF-8 environment.
1208 * minor incompatible change: BASE-CHAR no longer names a class;
1209 however, CHARACTER continues to do so, as required by ANSI.
1210 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1211 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1212 has been moved to the SB-EXT package (temporarily re-exported from
1214 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1215 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1217 * fixed bug #351: better error-handlind and reporting for malformed
1219 * fixed bug #350: bignum-printing is now more memory-efficient,
1220 allowing printing of very large bignums, eg. (expt 2 10000000).
1221 (reported by Bruno Haible)
1222 * fixed bug #302: better primitive-type selection for intersection
1224 * fixed bug #308: non-graphic characters now all have names, as
1225 required. (reported by Bruno Haible)
1226 * bug fix: redefining a class with different superclasses now correctly
1227 removes it from the direct-subclasses of its previous superclasses.
1228 (reported by David Morse)
1229 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1230 new value now works. (reported by Bruno Haible)
1231 * bug fix: correct canonicalization of multiple non-standard slot
1232 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1233 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1234 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1235 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1236 now exists, an signals an error.
1237 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1238 during macroexpansion for non-iteration variables as well. (reported
1239 by Bruno Haible for CMUCL)
1240 * bug fix: Cyclic structures and unprintable objects in compiler
1241 messages no longer cause errors. (reported by Bruno Haible)
1242 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1243 and READ-FROM-STRING all now return a primary value of NIL if
1244 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1245 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1246 (reported by Bruno Haible for CMUCL)
1247 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1248 do not designate a condition. (reported by Bruno Haible for
1250 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1251 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1252 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1253 permitting resolution in favour of any of the conflicting symbols.
1254 (reported by Bruno Haible for CMUCL)
1255 * bug fix: EQUAL compiler optimizations is less aggressive on
1256 strings which can potentially compare true despite having distinct
1257 specialized array element types.
1258 * bug fix: unit enumerations can be defined without dividing by
1259 zero. (thanks to Vincent Arkesteijn)
1260 * FORMAT compile-time argument count checking has been enhanced.
1261 (report from Bruno Haible for CMUCL)
1262 * a partial workaround for the bug 262: the compiler does not try to
1263 inline-expand a local function doing RETURN-FROM from a deleted
1264 BLOCK. (thanks to Peter Denno for the bug report and to David
1265 Wragg for the simple test case)
1266 * fixed some bugs revealed by Paul Dietz' test suite:
1267 ** RENAME-PACKAGE allows all package designators as new package
1269 ** constraint propagation and lambda variable substitution are
1270 more cautious in dealing with partially deleted code.
1271 ** compiler sometimes lost reoptimization passes.
1272 ** CERROR, given a condition as condition designator, passes its
1273 remaining arguments to the continue format control without
1275 ** Case-altering FORMAT directives work correctly on non-ASCII
1277 ** The REAL type specifier handles bounds outside the floating
1278 point ranges without signalling FLOATING-POINT-OVERFLOW.
1279 ** Functions with IR1-transformations can create intercomponent
1280 references to global functions.
1281 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1283 ** FORMAT ~R treats a nil value for its first parameter correctly.
1285 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1286 * enhancement: saving cores with foreign code loaded is now
1287 supported on x86/NetBSD and sparc/Linux in addition to the previously
1288 supported platforms.
1289 * bug fix: on some platforms repeated installations caused multiple
1290 copies of HTML documentation to be installed -- should not happen
1291 any more. (reported by Stefan Scholl)
1292 * bug fix: parsing self-recursive alien record types multiple times
1293 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1294 original patch by Helmut Eller for CMUCL)
1295 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1296 (thanks to Richard Kreuter)
1297 * bug fix: defining classes whose accessors are methods on existing
1298 generic functions in other (locked) packages no longer signals
1299 bogus package lock violations. (reported by François-René Rideau)
1300 * bug fix: special variables as DEFMETHOD parameters no longer have
1301 associated bogus type declarations. (reported by David Wragg and
1303 * bug fix: read-write consistency on streams of element-type
1304 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1305 * bug fix: redefiniton of the only method of a generic function with
1306 no DEFGENERIC no longer emits a full WARNING. In addition,
1307 redefinition of generic functions with no DEFGENERIC to an
1308 incompatible lambda list now signals an error. (thanks to Zach
1310 * bug fix: DEFGENERIC now works even when there's a function of the
1311 same name in an enclosing lexical environment. (thanks to Zach
1313 * fixed compiler failure, caused by instrumenting code during
1314 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1315 * optimization: added loop analysis and improved register allocation
1316 * fixed some bugs revealed by Paul Dietz' test suite:
1317 ** POSITION on displaced vectors with non-zero displacement
1318 returns the right answer.
1319 ** (SIMPLE-STRING) is a valid type specifier for sequence
1321 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1323 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1324 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1326 ** The justification version of the FORMAT ~< directive treats
1327 non-zero minpad parameter correctly.
1329 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1330 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1331 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1332 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1333 the supported interface.
1334 * new feature: Single-stepping of code compiled with DEBUG 2 or
1335 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1336 * new feature: saving cores with foreign code loaded is now
1337 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1338 Timothy Moore's work for CMUCL)
1339 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1340 parameters to * instead of NIL if no initform is supplied.
1341 (reported by Johan Bockgaard)
1342 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1343 correctly when FUNCALL appears as the car of the form. Note:
1344 despite this FUNCALL forms are not currently subject to
1345 compiler-macro expansion. (port of Raymond Toy's fix for the
1346 same from CMUCL, reported by Johan Bockgaard)
1347 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1348 (thanks for Teemu Kalvas)
1349 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1350 case instead of terminating the iteration (thanks for Julian
1351 Squires, Sean Champ and Raymond Toy)
1352 * bug fix: incorrect expansion of defgeneric that caused a style
1353 warning. (thanks for Zach Beane)
1354 * bug fix: slot accessor effective method computation works properly
1355 for classes with multiple non-standard applicable methods on
1356 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1357 * on x86 compiler supports stack allocation of results of LIST and
1358 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1359 CMUCL implementation by Gerd Moellmann)
1360 * fixed some bugs revealed by Paul Dietz' test suite:
1361 ** FORMAT strings with both the ~<~:;~> form of the justification
1362 directive and pretty-printing directives cause an error.
1364 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1365 * incompatible change: the internal functions
1366 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1367 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1368 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1369 instead of the old functions.
1370 * new feature: on platforms where "dladdr" is available foreign
1371 function names now appear in backtraces. (based on Helmut Eller's
1373 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1374 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1376 * documentation: ASDF manual is now distributed with SBCL.
1377 * bug fix: SBCL can now load its contributed modules with REQUIRE
1378 even if the system-provided entries have been removed from
1379 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1381 * bug fix: backtraces involving undefined functions or assembly
1382 routines are more informative. (thanks to Brian Downing)
1383 * bug fix: mutually referent alien structures now work correctly.
1384 (reported by Rick Taube)
1385 * bug fix: structures defined by WITH-ALIEN can be referred to
1386 within other definitions in the same WITH-ALIEN.
1387 * bug fix: division operators (MOD, TRUNCATE and the like) with
1388 constant zero divisors and integer dividends no longer generate
1390 * bug fix: provide default methods for INPUT-STREAM-P and
1391 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1392 * bug fix: improve the detection and resolution of MOP metacycles
1393 (where effective method computation depends on the generic function
1394 having its effective method computed). (reported by Bruno Haible)
1395 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1396 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1397 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1398 * bug fix: pathnames with relative directory components can be
1399 represented relative to default pathnames.
1400 * optimization: in taking the GCD of bignums, reduce the two bignums
1401 to approximately the same size (using Euclid's algorithm) before
1402 applying the more sophisticated binary GCD. (thanks to Juho
1404 * optimization: COUNT on bitvectors now operates word-at-a-time.
1405 * optimization: ASH with a positive, but not necessarily constant,
1406 (leftwards) shift, when in a modular context, is compiled to a
1408 * fixed some bugs revealed by Paul Dietz' test suite:
1409 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1410 if the corresponding argument is NIL.
1411 ** FORMAT directives accepting a minpad parameter treat negative
1413 ** literal commas as character parameters to FORMAT directives are
1415 ** literal spaces directly after ~<Newline> directives within a
1416 format-logical-block (~:< ~@:>) do not induce :FILL-style
1417 conditional newlines.
1418 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1419 as specified: it no longer includes conditional newlines).
1420 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1422 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1423 :PER-LINE-PREFIX argument does not evaluate to a string.
1425 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1426 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1427 the manual for details; for now, package locks can be disabled by
1428 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1429 if no major problems are found then it is likely that they will be
1430 compiled in unconditionally.
1431 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1432 unsupported operators on all platforms. To load a shared library
1433 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1434 object file, link it into a shared library outside of SBCL and
1435 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1437 * bug workaround: ROOM T and the GC were not working together
1438 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1439 reporting facility aren't preserved. That reporting has been
1440 disabled, so now until and unless someone figures out how to make it
1441 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1442 * minor incompatible change: as threatened around sbcl-0.8.0, the
1443 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1444 The symbols are also exported from SB-PCL for backwards
1445 compatibility, but more so than before SB-PCL should be treated as
1446 an implementation-internal package.
1447 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1449 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1450 It is known as of this release not to work on the Alpha, however.
1451 * fixed bug #167: errors signalled due to illegal syntax in method
1452 bodies are now more legible.
1453 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1454 designators and can hence be used with TYPEP.
1455 * fixed bug #333: CHECK-TYPE now ensures that the type error
1456 signalled, if any, has the right object to be accessed by
1457 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1458 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1459 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1461 * fixed bug #334: programmatic addition of slots using specialized
1462 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1463 and :ALLOCATION :CLASS slots.
1464 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1465 float exponents. (rereported by Peter Seibel)
1466 * fixed a bug: #\Space (and other whitespace characters) are no
1467 longer considered to be macro characters in standard syntax by
1468 GET-MACRO-CHARACTER.
1469 * fixed bug: initialization of condition class metaobjects no longer
1470 causes an instance of the condition to be created. (reported by
1472 * fixed bug: it is now possible to have slots such that
1473 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1474 description is neither :INSTANCE nor :CLASS.
1475 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1476 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1477 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1478 non-standard SLOT-DEFINITION-ALLOCATION values.
1479 * fixed bugs: various race conditions handling exiting threads.
1480 CL-PPCRE's thread torture test now passes.
1481 * fixed arguably-a-bug: GC time proportional to number of threads in
1482 system even when most of them are idle
1483 * optimization: improved performance of BIT and SBIT on bit-vectors.
1484 * .fasl file incompatibility: The fasl file version number has
1485 been incremented because of changes associated with package locks.
1487 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1488 * minor incompatible change: the system no longer provides
1489 optimization hints (conditions which are TYPEP
1490 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1491 mode; these hints are still emitted when higher SPEED optimization
1493 * new contrib module: a sampling profiler (profiling by statistical
1494 sampling, rather than by instrumenting functions) is available as
1495 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1496 * the behaviour of the standard function ED is now customizeable by
1497 third parties through a hook variable: see ED's documentation
1498 string for information on the protocol.
1499 * the compiler no longer emits efficiency notes for (FUNCALL X)
1500 when the type of X is uncertain under default optimization
1502 * fixed bug 276: mutating a binding of a specialized parameter to a
1503 method to something that is not TYPEP the specializer is now
1505 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1506 exhibit the required behaviour on the x86 platform. (thanks to
1507 Peter van Eynde, Eric Marsden and Bruno Haible)
1508 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1509 even for difficult arguments. (reported by Peter Graves)
1510 * fixed bug 141a: the backquote printer now descends quoted
1512 * fixed another bug in backquote printing: no more destructive
1513 modification of the form's list structure. (reported by Brian
1515 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1516 move between its address being taken and the call to
1517 interrupt_thread, fixing a crashing race condition.
1518 * the SB-POSIX contrib implementation has been adjusted so that it
1519 no longer exhibits ridiculously poor performance when constructing
1520 instances corresponding to C structs.
1522 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1523 * minor incompatible change: the sb-grovel contrib now treats C
1524 structures as alien (in the sense of SB-ALIEN) objects rather than
1525 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1526 has implications for memory management of client code
1527 (sb-grovel-returned objects must now be manually managed) and for
1528 type safety (alien objects now have full types).
1529 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1530 used to control emission of compiler diagnostics, rather than the
1531 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1532 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1533 quality should be considered deprecated.
1534 * install.sh now installs the user manual as well
1535 * (not quite a new documentable feature, but worth considering in
1536 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1537 beginnings of a semantically meaningful condition hierarchy is
1538 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1540 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1541 designator as the defaults argument.
1542 * fixed bug: Displaced arrays whose displaced-to array has become
1543 too small now cause ARRAY-DIMENSION to signal an error, providing
1544 for safer bounds-checking. (reported by Bruno Haible)
1545 * fixed bug: DEFCLASS slot definitions with identical :READER and
1546 :WRITER names now signal a reasonable error. (reported by Thomas
1548 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1550 * fixed bug: Invalid slot specification errors now print correctly.
1551 (thanks to Zach Beane)
1552 * fixed bug 320: Shared to local slot value transfers in class
1553 redefinitions now happen corrently from superclasses as
1554 well. (reported by Bruno Haible)
1555 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1557 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1558 improper lists correctly. (reported by Bruno Haible)
1559 * fixed bug 313: source-transform for <fun-name> was erroneously
1560 applied to a call of a value of a variable with name <fun-name>.
1561 (reported by Antonio Menezes Leitao)
1562 * fixed bug 307: The obsolete instance protocol ensures that
1563 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1564 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1565 remove dead unknown-values globs from the middle of the stack.
1566 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1567 easier to resume long computations after using *BREAK-ON-SIGNALS*
1568 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1569 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1570 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1571 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1572 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1573 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1575 * fixed a (fairly theoretical) bug in string printing: if
1576 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1577 does not have array-element-type equal to the most general string
1579 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1580 function name. (thanks to Nikodemus Siivola)
1581 * fixed bug: compile-time format string checker failed on
1582 non-closed ~{. (reported by Thomas F Burdick)
1583 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1584 don't warn on legal loop code involving more than one aggregate
1585 boolean. (thanks to Nikodemus Siivola)
1586 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1587 in keyword position to MAKE-PACKAGE was not being reported as
1589 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1590 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1592 * fixed bugs 280 and 312: the checking for multiple definitions in a
1593 file is less likely to become confused by uses of inline
1595 * fixed bug: the #S reader macro performs the keyword coercion
1596 specified for slot names. (reported by Kalle Niemitalo)
1597 * fixed bug: lambda lists may contain symbols whose names start with
1598 & but are not lambda-list-keywords; their occurrence triggers a
1600 * fixed bug 321: define-method-combination argument lambda lists do
1601 not cause invalid code to be generated when &optional or &aux
1602 variables have default values. (reported by Bruno Haible)
1603 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1604 have CLOS classes; this appears also to have fixed reported
1605 instability in stack exhaustion detection.
1606 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1607 MUFFLE-WARNING when no associated restart is present is now
1609 * optimization: rearranged the expansion of various defining macros
1610 so that each expands into only one top-level form in a
1611 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1613 * optimization: used a previously little-used slot in symbols to
1614 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1616 * fixed some bugs revealed by Paul Dietz' test suite:
1617 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1619 ** Fixed an optimization bug related to inheritance of initforms
1620 from local to shared slots.
1621 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1622 ** CAST optimizer forgot to flush argument derived type.
1623 ** print/read consistency on floats is now orders of magnitude
1624 more likely. (thanks also to Bruno Haible for a similar report
1626 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1627 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1628 for objects of type REAL. Make it so.
1629 ** SXHASH is specified (infelicitously) to respect similarity,
1630 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1631 it so. (thanks to Markus Ziegler)
1632 ** on the Alpha, the compiler succeeds in compiling functions
1633 returning a known number of arguments greater than 63.
1634 ** fixed handling of invalid NIL arguments in keyword position
1636 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1638 ** provided a readably-printable representation for RANDOM-STATE
1640 ** ensured that pathnames, where they have a namestring, always
1641 print using #P"..." syntax.
1643 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1644 * Support for the forthcoming 2.0 version of the NetBSD kernel
1645 running on x86 hardware has been added. (thanks to Perry
1646 E. Metzger most immediately, and others for their past work)
1647 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1648 current release version; SBCL's OpenBSD support had been broken
1649 since about the time of OpenBSD's switch to ELF binary format.)
1650 * [placeholder for DX summary]
1651 ** user code with &REST lists declared dynamic-extent, under high
1652 speed or space and low safety and debug optimization policy.
1653 * The manual has been converted to Texinfo format and the debugger
1654 chapter from the cmucl manual has been added.
1655 * A facility has been added to extract documentation strings from
1656 sbcl and store them as Texinfo-formatted snippets for inclusion in
1657 the manual (via Texinfo's @include directive)
1658 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1659 the test case to Dave Roberts)
1660 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1661 pointers. (reported by Sean Ross)
1662 * bug fix: PROFILE output is printed nicely even for large numerical
1663 values. (thanks to Zach Beane)
1664 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1665 greater than 32 handle EOF correctly.
1666 * bug fix: on X86 an immediate argument of the IMUL instruction is
1667 correctly printed in disassembly. (thanks to Lutz Euler)
1668 * bug fix: class slots in redefined classes preserve their old
1669 values. (thanks to Bruno Haible and Nikodemus Siivola)
1670 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1671 succeeds. (reported by Marco Baringer)
1672 * fixed some bugs revealed by Paul Dietz' test suite:
1673 ** READ-SEQUENCE now works on ECHO-STREAMs.
1674 ** RATIONALIZE works more according to its specification. (thanks
1677 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1678 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1679 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1680 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1681 should matter to you only if you rebind the printer control
1682 variables and then find you want different bindings in the
1683 debugger than in the ordinary execution of your program.)
1684 * The runtime build system has been tweaked to support building
1685 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1686 assembler and linker. (thanks to Nikodemus Siivola)
1687 * Unbound, undefined, undeclared variables now trigger full
1688 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1689 more often programmer error than deliberate exploitation of undefined
1691 * optimization: the hash algorithm for strings has changed to one
1692 that is less vulnerable to spurious collisions. (thanks to Juho
1694 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1695 needless bounds checking. (thanks to Juho Snellman)
1696 * optimization: implemented multiplication as a modular
1697 (UNSIGNED-BYTE 32) operation on the PPC backend.
1698 * fixed some bugs revealed by Paul Dietz' test suite:
1699 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1701 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1702 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1703 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1705 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1707 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1709 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1710 their output stream on EOF from read.
1711 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1712 have been read to end-of-file.
1713 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1715 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1716 description of determination of which consecutive characters
1718 ** Printing the "Space" character with escaping on now yields "#\\ ",
1719 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1720 ** Reading floating-point numbers with *READ-BASE* set to a number
1721 less than 10 works correctly.
1722 ** Reading floating-point numbers with *READ-BASE* set to a number
1723 more than 10 works correctly.
1724 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1725 the readtable currently in effect.
1727 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1728 * minor incompatible change: parsing of namestrings on a physical
1729 (Unix) host has changed; numbers after the final #\. in a
1730 namestring are no longer interpreted as a version field. This is
1731 intented to be largely invisible to the user, except that the
1732 meaning of the namestring "*.*.*" has changed: it now refers to a
1733 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1734 should usually be replaced by
1735 (make-pathname :name :wild :type :wild :version :wild)
1736 with the added benefit that this is more likely to be portable.
1737 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1738 option to OPEN now signals an error if the file being opened
1739 exists; this may have an impact on existing code.
1740 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1741 signals received, on the PowerPC platforms (both Linux and
1742 Darwin). (thanks to Pierre Mai for pointing out the location of
1744 * several fixes on OS X: The system now builds and runs cleanly on
1745 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1746 (thanks to Brian Mastenbrook)
1747 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1748 second-resolution: integer multiples of 1/3600 between -24 and 24.
1749 (thanks to Vincent Arkesteijn)
1750 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1751 type when called with 1 argument; PEEK-CHAR checked type of
1752 PEEK-TYPE only after having read first character from a
1753 stream. (reported by Peter Graves)
1754 * bug fix: the garbage collector now has much better locality
1755 behaviour, and in particular no longer treats all memory as being
1756 exhausted when many small objects point to each other in a deeply
1758 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1759 recognized as being TYPEP their class.
1760 * bug fix: the PUSHNEW documentation string has been corrected.
1761 (thanks to Vincent Arkesteijn)
1762 * bug fix: defaulting of the value for the last of an atypically
1763 large number of multiple values being bound was not being
1764 performed correctly on the Alpha or PPC platforms
1765 * optimization: implemented multiplication as a modular
1766 (UNSIGNED-BYTE 32) operation on the x86 backend.
1767 * optimization: SEARCH on simple-base-strings can now be open-coded.
1768 (see also contrib/compiler-extras.lisp for inspiration for
1769 teaching the compiler about the Boyer-Moore algorithm).
1770 * value, returned by MAX (and MIN) called with several EQUALP, but
1771 not EQL, arguments now does not depend on compiler settings.
1772 * fixed some bugs revealed by Paul Dietz' test suite:
1773 ** in stack analysis liveness information is propagated from
1774 non-local entry points.
1775 ** pathwise CAST removing failed when the CAST node did not start
1777 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1778 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1780 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1781 host is already defined.
1782 ** RENAME-FILE works on streams instead of signalling an internal
1784 ** PEEK-CHAR uses the current readtable when determining whether
1785 or not a character is whitespace.
1786 ** MERGE-PATHNAMES handles the case when the pathname does not
1787 specify a name while the default-pathname specifies a version.
1788 ** Pathnames now stand a better chance of respecting print/read
1790 ** Attempting to use standardized file system operators with a
1791 pathname with invalid :DIRECTORY components signals a
1793 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1795 ** DIRECTORY on logical pathnames is more correct.
1796 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1797 signal a TYPE-ERROR if their argument is not a stream.
1798 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1799 designator argument does not designate a stream.
1800 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1801 examining the synonym.
1802 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1804 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1805 element-type larger than ([UN]SIGNED-BYTE 32).
1807 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1808 * When built with the :SB-FUTEX feature, threaded builds now take
1809 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1810 for faster/more reliable mutex and condition variable support.
1811 * Incompatible change (but one you probably shouldn't have been using
1812 anyway): the interface and code for arbitrating between multiple
1813 threads in the same user session has been redesigned.
1814 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1815 error when called without an explicit environment argument.
1816 (thanks to Nikodemus Siivola)
1817 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1818 confused about their position. (thanks to Adam Warner and Gerd
1820 * bug fix: Pretty printing backquoted forms with unquotations in the
1821 argument list position of various code constructs such as LAMBDA
1822 now works correctly. (reported by Paul Dietz)
1823 * bug fix: Pretty printing unquotations no longer loses all
1824 stream position information.
1825 * optimization: performance of string output streams is now less
1826 poor for multiple small sequence writes.
1827 * optimization: performance of CSUBTYPEP in the presence of complex
1828 expressions involving CONS and NOT many times has been improved.
1829 (reported by Paul Dietz)
1830 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1832 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1833 streams for the REPL, for the debugger, and so on. (thanks to
1835 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1836 * fixed some bugs revealed by Paul Dietz' test suite:
1837 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1838 is ignored if it is too small, rather than propagating through
1839 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1840 ** extremely complex negations of CONS types were not being
1841 sufficiently canonicalized, leading to inconsistencies in
1843 ** VALUES tranformer lost derived type.
1845 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1846 * fixed a bootstrapping bug: the build process no longer assumes
1847 that the various BOOLE-related constants have the same value in
1848 host and target lisps. (noted by Paul Dietz' test suite on an
1849 SBCL binary built from CLISP)
1850 * The system can now be dynamically linked on the MIPS platform,
1851 which enables dynamic loading of foreign code from Lisp. (thanks
1852 to Ralf Baechle for discussions on the MIPS ABI)
1853 * The system now records debugging information for its own source
1854 files in a filesystem-position-independent manner, relative to
1855 the "SYS" logical host.
1856 * fixed a compiler bug: MV-LET convertion did not check references
1857 to the "max args" entry point. (reported by Brian Downing)
1858 * tweaked disassembly notes to be less confident about proclaiming
1859 some instruction as an LRA. (thanks to Brian Downing)
1860 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1861 now each have their own history, command character, and other
1862 characteristics. (thanks to David Lichteblau)
1863 * fixed some bugs revealed by Paul Dietz' test suite:
1864 ** compiler failure in compiling LOGAND expressions including a
1866 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1867 shift greater than 32.
1868 ** FLUSH-DEST did not mark blocks for type check regeneration.
1869 ** HANDLER-CASE failed to accept declarations in handler clauses
1870 in some circumstances.
1872 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1873 * New code in contrib/sb-introspect (still probably not entirely
1874 stable yet) provides some support for smart Lisp development
1875 environments like SLIME.
1876 * The conditions signalled for errors occurring when loading .fasl
1877 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1878 in a way which should help ASDF recover gracefully.
1879 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1880 stuff has been cleaned up. If you code contrib/ stuff, this might
1881 affect you, and you can look at contrib/README, contrib/STANDARDS,
1882 and/or the 0.8.4.27 diff to check.
1883 * In full calls the compiler now does not generate checks for declared
1884 argument types for all arguments.
1885 * various threading fixes
1886 ** and some experimental patches which didn't make it into
1887 the main tree for this release, but which are shipped in
1888 contrib/experimental-thread.patch as a possible fix for some
1889 failures (deadlock, spinning...) in GC-intensive multithreaded
1891 * fixed PPC build problem (source code incompatibility of different
1892 library versions): added offsetof() hackery which attempts to divine
1893 where glibc maintainers put uc_mcontext today
1894 * fixed bug 282: compiler does not trust type assertions while passing
1895 arguments to a full call.
1896 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1897 &OPTIONAL VALUES type parameter.
1898 * fix bug 214: algorithm for noting rejected templates is now more
1899 similar to that of template seletion. (also reported by rydis on
1901 * fixed bug 141b: printing backquoted information readably and prettily
1902 inserts a space where necessary.
1903 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1904 (CHARACTER 10) are now reported as errors, rather than propagated
1905 as unknown types. (reported by piso on #lisp)
1906 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1907 with values NIL and :ERROR. (thanks to Milan Zamazal)
1908 * fixed bug 191c: CLOS now does proper keyword argument checking as
1909 described in CLHS 7.6.5 and 7.6.5.1.
1910 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1911 longer raise an error; further, using a list as a for-as-arithmetic
1912 counter now raises a meaningful error.
1913 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1914 now understood by sequence creation functions such as MAKE-SEQUENCE
1916 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1917 a STRING-INPUT-STREAM.
1918 * compiler enhancement: SIGNUM is now better able to derive the type
1920 * type declarations inside WITH-SLOTS are checked. (reported by
1922 * fixed some bugs revealed by Paul Dietz' test suite:
1923 ** incorrect optimization of TRUNCATE for a positive first
1924 argument and negative second.
1925 ** compiler failure in let-convertion during flushing dead code.
1926 ** compiler failure while deriving type of TRUNCATE on an
1927 interval, containing 0.
1928 ** ASH of a negative bignum by a negative bignum count now returns
1930 ** intersection of CONS types now canonicalizes properly, fixing
1931 inconsistencies in SUBTYPEP.
1933 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1934 * incompatible change: The --disable-debugger command line
1935 option now clobbers the debugger at a more fundamental
1936 level, by redefining #'INVOKE-DEBUGGER instead of by
1937 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1938 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1939 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1940 enter the debugger REPL and then suffer recursive errors
1941 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1942 while under the new system, BREAK in --disable-debugger mode
1943 terminates the system just as an unhandled error would.
1944 * fixed compiler performance when processing loops with a step >1;
1945 * bug fix: DOCUMENTATION now retrieves generic function
1946 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1947 support has been systematized, and now supports the methods
1948 specified by ANSI, along with a default method and a method for
1949 slot documentation. (reported by Nathan Froyd)
1950 * bug fix: effective methods associated with a generic function are
1951 no longer cached over a change of that generic function's method
1952 combination. (reported by Andreas Fuchs)
1953 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1954 names a non-existent directory. (thanks to Andreas Fuchs)
1955 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1956 the PPC platform, lead to stack corruption; this has been fixed.
1957 (reported by Rainer Joswig)
1958 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1959 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1960 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1961 arithmetic in general, is now much more reliable on the PPC
1963 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1964 platform now returns the right answer.
1965 * optimization: restored some effective method precomputation in
1966 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1967 precomputation is now tunable.
1968 * optimization: compiler-internal data structure use has been
1969 reviewed, and changes have been made that should improve the
1970 performance of the compiler by about 20%.
1971 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1972 simple-base-strings and simple-bit-vectors is improved.
1973 * optimization: the optimization of 32-bit logical and arithmetic
1974 functions introduced in version 0.8.3 on the x86 has been
1975 implemented on the mips, ppc and sparc platforms; an
1976 implementation of the same facility, but for 64-bit arithmetic,
1977 has been added for the alpha.
1978 * microoptimization: the compiler is better able to make use of the
1979 x86 LEA instruction for multiplication by constants.
1980 * bug fix: in some situations compiler did not report usage of
1981 generic arithmetic in (SPEED 3) policy.
1982 * bug 145b fix: compiler used wrong type specifier while converting
1983 MEMBER-types to numeric.
1984 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1986 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1987 index argument now works properly on the Alpha platform.
1988 * bug fix: floating point exception treatment on the Alpha platform
1990 * bug fix: FILE-POSITION works much better on string input and
1991 output streams. (thanks to Nikodemus Siivola)
1992 * bug fix: many threading/garbage collection symptoms sorted.
1993 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1994 might be pseudo-atomic.
1995 * internal change: Stopping for GC is now done with signals not
1996 ptrace. GC is now done in whichever thread wanted it, instead of
1998 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2000 * bug fix: result form in DO is not contained in the implicit
2002 * incompatible change: ICR structure is changed; the value part of
2003 CONTINUATION is now called LVAR; corresponding functions are
2004 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2005 * added type deriver for ISQRT (thanks to Robert E. Brown).
2006 * bug fix: better support for loading from the command line when an
2007 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2009 * fixed some bugs revealed by Paul Dietz' test suite:
2010 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2011 ** ROUND and FROUND now give the right answer when given very
2012 small float arguments.
2013 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2015 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2016 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2017 ** LCM should return a non-negative integer.
2018 ** PARSE-INTEGER returned the index of a terminator instead of the
2019 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2020 ** PARSE-INTEGER returned an incorrect index being applied to a
2022 ** LCM with two arguments of 0 returns 0 rather than signalling
2024 ** unsigned addition of a 32-bit constant with the high bit set no
2025 longer causes an internal compiler error on the x86.
2026 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2027 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2028 with negative last argument.
2029 ** byte specifiers with zero size and position no longer cause
2030 an error during type derivation.
2031 ** bignum multiplication on the Alpha platform now returns the
2033 * porting: The system now builds on SuSE AMD64, although it still
2034 generates a 32-bit binary.
2035 * .fasl file incompatibility: The fasl file version number has
2036 been incremented (because of the changes to internal compiler
2037 data structures referred to above).
2039 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2040 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2041 more accurately, on the Darwin kernel running on PowerPC hardware.
2042 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2043 * Compiler code deletion notes now signal a condition of type
2044 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2045 an associated MUFFLE-WARNING restart.
2046 * The compiler now performs limited argument count validation of
2047 constant format strings in FORMAT, and where appropriate in ERROR,
2048 CERROR and WARN. (thanks to Gerd Moellmann)
2049 * New ASDF-INSTALL contrib can be used for automatic download and
2050 installation of third-party Lisp code from CCLAN or other sites
2052 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2053 which forces another thread to execute a function supplied by the
2055 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2056 now accept and act upon their :ELEMENT-TYPE keyword argument.
2057 (reported by Martin Atzmueller, Edi Weitz)
2058 * bug fix: FILE-POSITION now accepts position designators up to
2059 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2060 is the greater. (thanks to Patrik Nordebo)
2061 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2062 Kalle Olavi Niemitalo)
2063 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2064 printable. (reported by Eric Marsden)
2065 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2066 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2067 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2068 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2069 (thanks to Stig Sandoe)
2070 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2071 UNREAD-CHAR now correctly includes the unread character in the
2072 target sequence. (thanks to Gerd Moellmann)
2073 * bug fix in threaded builds: the system can now be suspended and
2074 resumed by shell job control with minimal disruption.
2075 * bug fixes in times and timezones >2038AD
2076 * better handling of "where is GNU make?" problem in build scripts
2077 (thanks to Nikodemus Siivola)
2078 * new optimization: inside a named function any reference to a
2079 function with the same name is considered to be a self-reference;
2080 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2081 optimization quality.
2082 * new optimization on x86: logical functions and + now have
2083 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2084 used when the result is truncated to 32 bits.
2085 * VALUES declaration is partially enabled.
2086 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2087 * fixed some bugs revealed by Paul Dietz' test suite:
2088 ** The system now obeys the constraint imposed by
2089 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2090 types form a lattice under type intersection.
2091 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2092 ** ASSOC now ignores NIL elements in an alist.
2093 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2094 and (1+ MOST-POSITIVE-FIXNUM) answers.
2095 ** The addition of a method with invalid qualifiers to a generic
2096 function does not cause an error to be signalled immediately;
2097 a warning is signalled, and the error is generated only on
2098 calling the generic function.
2099 * changed .fasl file version number, in part to add type codes for
2100 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2101 obscure ANSI requirements
2103 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2104 * fixed bug 148: failure to inline-expand a local function left
2105 garbage, confusing the compiler.
2106 * fixed bugs 3cd: structure slot readers perform type check if the
2107 slot can have an invalid value (i.e. it is either not initialized
2108 or can be written with a less specific slot writer).
2109 * bug fix: the compiler now traps array references to elements off
2110 the end of an array; previously, the bounds checking in some
2111 circumstances could go off-by-one.
2112 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2114 * type declarations for array element types now obey the description
2115 on the CLHS page "Declaration TYPE", as per discussions on
2116 sbcl-help around 2003-05-08. This means that a declaration
2117 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2118 declaration, all references to BAR will be asserted or assumed
2119 (with THE, so dependent on compiler policy) to involve objects of
2120 type FOO. Note that no such declaration is implied in
2121 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2122 * declared types of functions from the "Conditions"
2123 chapter. (reported by Paul Dietz)
2124 * bug fix: CERROR accepts a function as its first argument.
2125 * bug fix: NTH an NTHCDR accept a bignum as index
2126 arguments. (reported by Adam Warner)
2127 * optimization: character compare routines now optimize comparing
2128 against a constant character. (reported by Gilbert Baumann)
2129 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2130 argument now works properly on the MIPS platform.
2131 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2132 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2133 declared to have a functional type, does not cause an error
2135 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2136 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2137 * fixed bug: if last continuation of a deleted block has a
2138 destination, this destination should be deleted too. (reported by
2140 * fixed a bug in the bootstrap process: the host compiler's values
2141 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2142 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2143 test case from Patrik Nordebo)
2144 * improved the ability of the disassembler on the PPC platform to
2145 provide helpful disassembly notes.
2146 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2147 the class in more cases than previously.
2148 * bug fix: FILE-POSITION now understands :START and :END for
2149 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2150 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2151 8) data. (thanks to David Lichteblau)
2152 * bug fix: it is possible to add a method to a generic function
2153 without lambda list.
2154 * bug fix: reader failed to signal END-OF-FILE inside an
2155 object representation. (reported by Nikodemus Siivola)
2156 * fixed some bugs revealed by Paul Dietz' test suite:
2157 ** LAST and [N]BUTLAST should accept a bignum.
2158 ** condition slot accessors are methods.
2159 ** (VECTOR NIL) is a subtype of STRING.
2161 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2162 * minor incompatible change: some nonsensical specialized lambda
2163 lists (used in DEFMETHOD) which were previously ignored now signal
2165 * minor incompatible change: the system is now aware of the types of
2166 variables in the COMMON-LISP package, and will signal errors for
2167 most violations of these type constraints (where previously they
2168 were silently accepted).
2169 * minor incompatible change: COMPILE-FILE now uses the freedom
2170 afforded (ANSI 3.2.2.3) to use derived function types for
2171 functions defined in the same file. This also permits the system
2172 to warn on static type mismatches and function
2173 redefinition. (Currently it does not work with high DEBUG level.)
2174 * minor incompatible change: VALUES declaration is disabled.
2175 * When issuing notes, the compiler now signals a condition of type
2176 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2177 restart for use in user handlers. It is expected that the
2178 COMPILER-NOTE condition will eventually become a condition
2179 supertype to a hierarchy of note types, which will then be
2180 handleable in a similar fashion. However, at the moment, no such
2181 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2182 but it's an implementation detail, not a classification for the
2184 * Changes in type checking closed the following bugs:
2185 ** type checking of unused values (192b, 194d, 203);
2186 ** template selection based on unsafe type assertions (192c, 236);
2187 ** type checking in branches (194bc).
2188 * A short form of VALUES type specifier has ANSI meaning (it has
2189 increased the number of situations when SBCL cannot perform type
2191 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2192 keywords or constants is permissible.
2193 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2194 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2195 classes. (thanks to Antonio Martinez)
2196 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2197 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2198 argument to a pretty-print stream. Instead, it leaves any such
2199 operations to DESCRIBE-OBJECT methods.
2200 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2202 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2203 lambda lists. (thanks to David Lichteblau)
2204 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2205 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2206 (thanks to Gerd Moellmann)
2207 * fixed bug 246: increased compilation speed of long
2208 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2210 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2212 * DEFCONSTANT now throws a condition of type
2213 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2214 constant to a non-EQL value; CONTINUE and ABORT restarts
2215 respectively change and preserve the value.
2216 * fixed bug 63: The code walker, part of the implementation of CLOS,
2217 is now better at handling symbol macros.
2218 * bug fix: There is no longer an internal implementation type named
2219 CL:LENGTH. (reported by Raymond Toy)
2220 * bug fix: In macro-like defining macros/special operators the
2221 implicit block does not enclose the lambda list.
2222 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2223 enclosed in parentheses) are not suitable as type specifiers, and
2224 their use properly signals an error now.
2225 * bug fix: An argument count mismatch for a type specifier in code
2226 being compiled no longer causes an unhandled error at compile
2227 time, but signals a compile-time warning.
2228 * fixed simple vector readable printing
2229 * bug fix: DESCRIBE takes more care over whether the class
2230 precedence list slot of a class is bound before accessing it.
2231 (reported by Markus Krummenacker)
2232 * bug fix: FORMATTER can successfully compile pretty-printer format
2233 strings which use variants of the ~* directive inside.
2234 * bug fix: SEARCH now applies its TEST predicate to the elements of
2235 the arguments in the correct order. (thanks to Wolfhard Buss)
2236 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2237 in type inference. (thanks to Robert E. Brown)
2238 * bug fix: Reading in symbols with an explicit package name of ""
2239 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2240 * fixed some bugs revealed by Paul Dietz' test suite:
2241 ** NIL is now allowed as a structure slot name.
2242 ** Arbitrary numbers, not just REALs, are allowed in certain
2243 circumstances in LOOP for-as-arithmetic clauses.
2244 ** Multiple class redefinitions before slot access no longer
2245 causes a type error.
2246 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2247 association between the name and a class.
2248 ** Generic functions with non-standard method-combination and over
2249 five methods all of which return constants no longer return NIL
2250 after the first few invocations. (thanks to Gerd Moellmann)
2251 ** CALL-NEXT-METHOD with no arguments now passes the original
2252 values of the arguments, even in the presence of assignment.
2253 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2255 ** DISASSEMBLE works with closures and funcallable instances.
2256 ** ADD-METHOD now returns the generic function, not the new method.
2257 ** FIND-METHOD signals an error if the lengths of the specializers
2258 is incompatible with the generic function, even if the ERRORP
2260 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2261 which its argument is a member.
2262 ** DEFCLASS only redefines the class named by its class-name
2263 argument if that name is the proper name of the class;
2264 otherwise, it creates a new class.
2265 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2266 of the UNBOUND-SLOT condition to the name of the slot.
2267 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2268 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2269 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2270 SLOT-MAKUNBOUND in the specified fashion.
2272 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2273 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2274 cross-compilation host. As a consequence, we can now bootstrap our
2275 way up to SBCL starting with a bare gcc toolchain and human-readable
2276 source code (first the source to CLISP, then the source to SBCL).
2277 * A contributed module containing a partial implementation of the
2278 simple-streams interface has been included. (thanks to Rudi
2280 * A contributed module implementing the RFC1321 Message Digest
2281 Algorithm, known as MD5, has been included.
2282 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2283 no longer has any effect, as the code controlled by this feature
2284 has been deleted. (As far as we know, no-one has ever built using
2285 this feature, and its semantics were confused in any case).
2286 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2287 work on conditions (as required by the ANSI specification),
2288 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2289 expected behaviour on conditions. Users should note, however,
2290 that such behaviour is not required by the ANSI specification,
2291 and so use of this behaviour may render their code unportable.
2292 * fixed some bugs revealed by Paul Dietz' test suite:
2293 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2295 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2296 ** SXHASH on condition objects no longer returns NIL.
2297 ** :ALLOCATION :CLASS slots are better treated; their values are
2298 updated on class redefinition, and initforms inherited from
2299 superclasses are applied.
2300 ** REMOVE-METHOD returns its generic function argument even when
2301 no method was removed.
2302 ** SHARED-INITIALIZE now initializes the values of the requested
2303 slots, including those with :ALLOCATION :CLASS.
2304 ** ALLOCATE-INSTANCE now works on structure classes defined via
2305 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2307 ** SLOT-EXISTS-P now works on conditions, as well as structures
2309 ** MAKE-LOAD-FORM now has the required methods on
2310 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2311 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2312 keyword, and now implements the SLOT-NAMES argument.
2313 ** methods with &OPTIONAL arguments no longer allow too many
2314 arguments to be passed in the call without error.
2315 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2316 option is consistent with the required arguments of the generic
2317 function lambda list.
2318 * bug fix: REQUIRE accepts a string designator. (Thanks to
2320 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2321 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2322 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2323 * bug fix: The compiler now checks for duplicated variables in macro
2325 * bug fix: SETQ on globals returns the correct value.
2326 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2327 not a COMPILER-ERROR (followed by some other strange error on
2328 choosing the CONTINUE restart).
2329 * bug fix: make.sh and friends are now more consistent in the way that
2330 they look for GNU "make".
2332 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2333 * experimental native threads support (on x86 Linux >=2.4 only).
2334 This is not compiled in by default: you need to add :SB-THREAD to
2335 the target features. See the "Beyond ANSI" chapter of the manual
2337 * fix for longstanding nonANSIism: The old distinction between
2338 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2339 The return value from CL:FIND-CLASS is now a CLOS class, and
2340 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2341 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2342 * An interface to the MetaObject Protocol, as described in Kiczales,
2343 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2344 MIT Press, 1991, is available from the SB-MOP package.
2345 * incompatible change: the SB-PCL package should now be considered
2346 a private implementation detail, and no longer a semi-private MOP
2348 * minor incompatible change: due to rearrangement for threads, the
2349 control stack and binding stack are now allocated at arbitrary
2350 addresses instead of being hardcoded per-port. Users affected by
2351 this probably have to be doing advanced things with shared
2352 libraries, and will know who they are.
2353 * minor incompatible change: Previously, all --eval forms used were
2354 processed with READ before any of them were processed with EVAL.
2355 Now each --eval form is processed with both READ and EVAL before
2356 the next --eval form is processed. (Thus package operations like
2357 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2358 work as the user might reasonably expect.)
2359 * minor incompatible change: *STANDARD-INPUT* is now only an
2360 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2362 * minor incompatible change: Y-OR-N-P is now character-oriented,
2363 not line oriented. Also, YES-OR-NO-P now works without errors.
2364 (thanks to Antonio Martinez)
2365 * sb-aclrepl module improvements: an integrated inspector, added
2366 repl features, and a bug fix to :trace command.
2367 * Known functions, which cannot be open coded by the backend, are
2368 considered to be able to check types of their arguments. (fixing
2369 a bug report by Nathan J. Froyd)
2370 * fixed a bug in computing method discriminating functions: It is
2371 now possible to define methods specialized on classes which have
2372 forward-referenced superclasses. (thanks to Gerd Moellmann)
2373 * fixed evaluation order in optional entries (reported by Gilbert
2375 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2376 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2377 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2378 required-by-AMOP NAME argument, as well as CLASS and
2379 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2380 * fixed bug 20: DEFMETHOD can define methods using names that are
2381 not the proper names of classes to designate class specializers.
2382 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2383 Unix file descriptors, instead of blowing up. (thanks to Antonio
2385 * Garbage collection refactoring: user-visible change is that a
2386 call to the GC function during WITHOUT-GCING will not do garbage
2387 collection until the end of the WITHOUT-GCING. If you were doing
2388 this you were probably losing anyway.
2389 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2390 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2391 TYPEP the latter but not the former.
2392 * The compiler issues a full WARNING for calls to undefined functions
2393 with names from the CL package.
2394 * MAP-INTO for a vector destination is open coded. (reported by
2395 Brian Downing on c.l.l)
2396 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2397 documentation string.
2398 * fixed some bugs revealed by Paul Dietz' test suite:
2399 ** COPY-ALIST now signals an error if its argument is a dotted
2401 ** Condition slots are now accessed more correctly in the presence
2402 of multiple initargs for a given slot.
2403 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2404 exclude restarts of the same name associated with a different
2406 ** DEFCLASS of forward-referenced classes with another
2407 forward-referenced class in the superclasses list no longer
2409 ** Condition slots are now initialized once each, not multiple
2410 times. (thanks to Gerd Moellmann)
2411 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2413 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2414 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2415 arguments contain duplicated elements.
2416 ** RESTART-CASE understands local macros.
2417 ** RESTART-CASE associates exactly its own restarts with a condition.
2418 ** ENDP in safe mode checks its argument to be of type LIST.
2419 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2420 in question is unbound.
2421 ** Optimized MAKE-INSTANCE functions no longer cause internal
2422 assertion failures in the presence of duplicate initargs.
2423 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2424 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2425 propagated even in the ctor optimized implementation of
2427 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2429 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2430 * a better implementation of SXHASH on (simple) bit vectors,
2431 measured both in execution speed and in distribution of results
2432 over the positive fixnums, has been installed. Likewise, a better
2433 implementation of EQUAL for simple bit vectors is now available.
2434 * fixed CEILING optimization for a divisor of form 2^k.
2435 * fixed bug 240 (emitting extra style warnings "using the lexical
2436 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2437 by Antonio Martinez)
2438 * fixed SXHASH, giving different results for NIL depending on type
2439 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2440 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2441 variable. (found by Rolf Wester)
2442 * SBCL does not ignore type declarations for special
2443 variables. (reported by rif on c.l.l 2003-03-05)
2444 * some bug fixes in contrib/sb-aclrepl/
2445 * fixed some bugs revealed by Paul Dietz' test suite:
2446 ** a bug in the CONS type specifier, whereby the CAR and CDR
2447 types got intertwined, has been fixed;
2448 ** the type system is now able to reason about the interaction
2449 between INTEGER and RATIO types more completely;
2450 ** APPEND, [N]REVERSE and NRECONC check that those their
2451 arguments, which must be proper lists, are really so;
2452 ** An array specialized to be unable to hold elements has been
2453 implemented, as required -- yes, really -- by ANSI;
2454 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2455 on malformed property lists;
2457 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2458 * incompatible packaging change: in line with Unix convention,
2459 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2460 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2461 * REQUIRE and PROVIDE are now optionally capable of doing something
2462 useful. See the documentation string for REQUIRE.
2463 * infrastructure for a managed SBCL contrib system: contributed
2464 modules in this release include:
2465 ** the ASDF system definition facility;
2466 ** an interface to the BSD Sockets API;
2467 ** an ACL-like convenience interface to the repl;
2468 (thanks to Kevin Rosenberg)
2469 ** an implementation of ROTATE-BYTE, with efficient implementation
2471 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2472 gives a closer approximation to the right answer than previously.
2473 (thanks to Raymond Toy)
2474 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2475 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2476 optional environment arguments, as required by ANSI.
2477 * fixed bugs in other functions taking environment objects, allowing
2478 calls with an explicit NIL environment argument to be compiled
2480 * fixed bug 228: primary return values from
2481 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2482 COMPILE or FUNCTION.
2483 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2484 :TYPE will no longer signal errors on innocuous objects.
2485 * fixed bug 231b: SETQ is better at respecting type declarations in
2486 the lexical environment.
2487 * fixed a bug in DEFCLASS: classes named by symbols with no or
2488 unprintable packages can now be defined.
2489 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2490 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2491 * fixed compiler failure related to checking types of functions.
2492 (reported by Robert E. Brown)
2493 * the compiler is now much more consistent in its error-checking
2494 treatment of bounding index arguments to sequence functions: in
2495 (SAFETY 3) code, errors will be signalled in almost all cases if
2496 invalid sequence bounding indices are passed to functions defined
2497 by ANSI to operate on sequences.
2498 * fixed a bug in the build procedure: documentation of SBCL-specific
2499 packages is now preserved and available in the final Lisp image.
2500 * lifted FDEFINITION lookup out of loops in the implementation of
2501 many list operations. (thanks to Robert E. Brown)
2502 * fixed a bug in the reader: the #n# reader macro now works for
2503 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2504 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2505 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2506 E. Brown and Tony Martinez respectively)
2507 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2508 SLOT-BOUNDP: in particular, it is now able to optimize them much
2509 better, and is now not vulnerable to having packages renamed.
2510 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2511 always called when a slot is not present in an instance. (thanks
2513 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2514 longer signal an error on unreading a character following EOF on
2515 the previous constituent stream. (thanks to Tony Martinez)
2516 * fixed some bugs revealed by Paul Dietz' test suite:
2517 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2518 not just nonnegative fixnums;
2519 ** the logical bit-array operators such as BIT-AND now accept an
2520 explicit NIL for their "opt-arg" argument (to indicate a
2521 freshly-consed result bit-array);
2522 ** ELT now signals an error on an invalid sequence index in safe
2524 ** the type system is now cleverer about negations of numeric
2525 types, and consequently understands the BIGNUM and RATIO types
2527 ** the type system is now cleverer about the interaction between
2528 INTEGER and RATIO types: while bugs still remain, many more
2529 cases are accurately computed;
2530 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2531 if it is in the last clause;
2532 ** CONSTANTLY now correctly returns a side-effect-free function in
2534 ** DECLARE is no longer treated as a special-operator; in
2535 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2536 * incremented fasl file version number due to the change in the
2537 DEFSTRUCT-SLOT-DESCRIPTION structure.
2539 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2540 * minor incompatible change: code processed by the "interpreter" or
2541 EVAL now has a compilation optimization policy of (DEBUG 2)
2542 (changed from (DEBUG 1)) to improve debuggability of interactive
2543 development, and to allow the use of the debug RETURN command in
2545 * an experimental implementation of the RETURN command for the
2546 debugger has been included. (thanks to Frederik Kuivinen)
2547 * fixed bug 62: constraints were not propagated into a loop.
2548 * fixed bug in embedded calls of SORT (reported and investigated by
2550 * fixed some bugs revealed by Paul Dietz' test suite:
2551 ** printing and reading of arrays with some dimensions having
2552 length 0 (thanks to Gerd Moellmann);
2553 ** BOA constructor with &AUX argument without a default value does
2554 not cause a type error;
2555 ** CONSTANTP now returns true for all self-evaluating objects.
2557 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2558 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2559 accessors that are related by inheritance, as specified in the
2560 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2561 Valtteri Vuorikoski)
2562 * The compiler is now able to inline functions that were defined in
2563 a complex lexical environment (e.g. inside a MACROLET).
2564 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2566 * Support for the upcoming FreeBSD-5.0 release has been included.
2567 (thanks to Dag-Erling Smorgrav)
2568 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2569 effect when it is not in a toplevel context.
2570 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2571 stand a better chance of being correct. (thanks to Gerd
2573 * fixed bug in COERCE, which now signals an error on coercing a
2574 rational to a bounded real type which excludes the expected
2576 * The compiler is now able to derive types more accurately from the
2577 COERCE and COMPILE functions.
2578 * fixed bug 223: functional binding is considered to be constant
2579 only for symbols in the CL package.
2580 * fixed bug 231: SETQ did not check the type of a variable being set
2581 (reported by Robert E. Brown)
2582 * A new optimization for MAKE-INSTANCE has been included, fixing
2583 various bugs (including relating to :ALLOCATION :CLASS slots and
2584 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2586 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2587 ** As required by ANSI, LOOP now disallows anonymous collection
2588 clauses such as COLLECT I in conjunction with aggregate boolean
2589 clauses such as THEREIS (= I 1);
2590 ** LOOP now signals an error when any variable is reused in the
2591 same loop (including the potentially useful construct analogous
2592 to WITH A = 1 WITH A = (1+ A);
2593 ** IT is only a special loop symbol within the first clause of a
2594 conditional loop clause;
2595 ** LOOP with a typed iteration variable over a hashtable now
2596 signals a type error iff it should.
2597 * fixed some other bugs revealed by Paul Dietz' test suite:
2598 ** FILE-STREAM now names the class previously known as FD-STREAM;
2599 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2600 argument) no longer signals an error;
2601 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2602 of the slot symbol, rather than using the current package
2603 ((:CONC-NAME "") continues to intern the slot's name in the
2605 * incremented fasl file version number, because of the incompatible
2606 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2607 of the new implementation of DEFINE-COMPILER-MACRO.
2609 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2610 * Support for building SBCL for MIPS platforms running in
2611 little-endian mode has now been checked in, and basic
2612 functionality on said platforms verified.
2613 * minor incompatible change: PCL now records the pathname of a file
2614 in which methods and the like are defined, rather than its
2616 * minor incompatible change: TRUENAME now considers the truename of
2617 a file naming a directory to be the pathname with :DIRECTORY
2618 component indicating that directory.
2619 * minor incompatible change: a NAMED clause in the extended form of
2620 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2621 reason for the previous behaviour is unclear.
2622 * more systematization and improvement of CLOS and MOP conformance
2623 in PCL (thanks to Gerd Moellman and Pierre Mai):
2624 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2626 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2627 primary methods with no specializers;
2628 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2630 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2631 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2632 FORWARD-REFERENCED-CLASSes; error reporting on
2633 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2635 ** SXHASH on CLOS instances now uses a slot internal to the
2636 instance to return different numbers on distinct instances,
2637 while preserving the same return value through invocations of
2639 ** DEFMETHOD signals errors when methods with longer incongruent
2640 lambda lists are added to generic functions;
2641 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2642 CLASS, as specified in AMOP;
2643 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2644 on the order returned by the primary method for classes of
2645 class STANDARD-CLASS;
2646 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2647 * fixed some bugs shown by Paul Dietz' test suite:
2648 ** DOLIST puts its body in TAGBODY;
2649 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2651 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2652 value producing form;
2653 ** if more variables are given to PROGV than values, extra
2654 variables are bound and made to have no value;
2655 ** NSUBSTITUTE on list arguments gets the right answer with
2657 ** ELT signals an error of type TYPE-ERROR when the index argument
2658 is not a valid sequence index;
2659 ** LOOP signals (at macroexpansion time) an error of type
2660 PROGRAM-ERROR when duplicate variable names are found;
2661 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2662 ** FUNCALL of special-operators now cause an error of type
2664 ** PSETQ now works as required in the presence of side-effecting
2665 symbol-macro places;
2666 ** NCONC accepts any object as its last argument;
2667 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2669 ** loop-for-as-package does not require a package to be explicitely
2671 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2673 * fixed bug 166: compiler preserves "there is a way to go"
2674 invariant when deleting code.
2675 * fixed bug 172: macro lambda lists with required arguments after
2676 &REST arguments now cause an error to be signalled. (thanks to
2678 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2679 bug. (thanks to Matthew Danish)
2680 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2682 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2683 arguments are lexically rebound. (thanks to Gerd Moellmann and
2685 * fixed bug 194: error messages are now more informative when there
2686 is no primary method applicable in a call to a generic
2687 function. (thanks to Gerd Moellmann)
2688 * fixed bug in command line argument checking (thanks to Julian
2690 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2691 (thanks to Matthew Danish)
2692 * incremented fasl file version number, because of the
2693 SXHASH-related changes in the layout of CLOS data structures
2695 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2696 * minor incompatible change: The runtime (the Unix executable named
2697 "sbcl") is now much pickier about the .core files it will load.
2698 Essentially it now requires .core files to descend from the same
2699 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2700 as the runtime does. (The intent is to prevent the crashes which
2701 can occur, and which can even be reported as mysterious failures,
2702 when people patch the sources or change the build parameters
2703 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2704 sbcl and .core files.)
2705 * fixed bug: VALUES-LIST is no longer optimized away.
2706 * fixed bug 142: The FFI conversion of C string values to Lisp
2707 string values no longer conses excessively. (thanks to Nathan
2708 Froyd porting Raymond Toy's fix to CMU CL)
2709 * began to systematize and improve MOP conformance in PCL (thanks to
2710 Nathan Froyd, Gerd Moellman and Pierre Mai):
2711 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2713 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2714 ** FINALIZE-INHERITANCE is now called on class finalization;
2715 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2716 argument precedence order.
2717 * fixed bug 202: The compiler no longer fails on functions whose
2718 derived types contradict their declared type.
2719 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2720 so it can be non-toplevel.
2721 * The fasl file version number has changed (because of the new
2722 implementation of DEFMACRO).
2723 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2724 safe code, that any length requirement by their type-specifier
2725 argument is valid. The exceptions to this are described in bug
2727 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2728 functions now check the types of their inputs as required by ANSI.
2729 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2730 introduced symbol is DECLAREd to be SPECIAL.
2731 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2732 * fixed bug: :COUNT argument to sequence functions may be negative
2733 * fixed bug: body of DO-SYMBOLS may contain declarations
2734 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2735 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2736 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2737 symbol macro only once
2738 * fixed printing of call frame when argument list is unavailable
2739 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2740 * compiler no longer signals WARNING on unknown keyword
2743 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2744 * A beta-quality port to the mips architecture running Linux,
2745 based on the old CMUCL backend, has been made. It has been tested
2746 on a big-endian kernel, and works sufficiently well to be able to
2747 rebuild itself; it has not been tested in little-endian mode.
2748 * fixed an inconsistency between gencgc.c and purify.c which made
2749 dumping/loading .core files unreliable
2750 * fixed bug 120a: The compiler now deals correctly with IFs where
2751 the consequent is the same as the alternative, instead of
2752 misderiving the return type. (thanks to Alexey Dejneka)
2753 * fixed bug 113: Logical pathnames are now dumpable (the logical
2754 host is resolved at load-time, throwing an error if it is not
2756 * fixed bug 174: FORMAT's error message is slightly clearer when a
2757 non-printing character is used in a format directive.
2758 * fixed several bugs in compiler checking of type declarations, i.e.
2759 violations of the Python "declarations are assertions" principle
2760 (thanks to Alexey Dejneka)
2761 * fixed several bugs in PCL's error checking (thanks to Gerd
2763 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2765 * fixed bug in compilation of functions as first class values
2766 (thanks to Antonio Martinez-Shotton)
2767 * The compiler's handling TYPE-ERRORs which it can prove will
2768 inevitably happen at runtime has been cleaned up and corrected
2769 in several ways. (thanks to Alexey Dejneka)
2770 * improved argument type checking for various basic arithmetic
2771 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2772 lavished on them in the past that they can be compiled in many
2773 ways in different special cases
2774 * fixed bug 181: compiler checks validity of user supplied type
2776 * cleaned up code flushing in optimization: Function calls which
2777 should signal errors for safety purposes (e.g. which ANSI says
2778 should signal errors when their arguments are of incorrect type)
2779 are no longer optimized away.
2780 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2781 * incremented fasl file version number, because changes in the
2782 implementation of sequence functions like COERCE caused
2783 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2784 in old inline expansions) to become undefined. (Actually these
2785 changes were later undone, so we might very well be binary
2786 compatible with 0.7.7 after all, but leaving the version number
2787 incremented seemed like the simplest and most conservative
2790 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2791 * An alpha-quality port to the parisc architecture running Linux,
2792 based on the old CMUCL backend, has been made. This, even more so
2793 than the other backends, should be considered still a work in
2794 progress; known problems include that the Linux kernel in 64-bit
2795 mode does not propagate the correct sigcontext structure to
2796 userspace, and consequently SBCL on a parisc64 kernel will not
2798 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2799 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2800 suppressed.) Also now that the compiler is looking at declarations
2801 in the environment, it checks optimization declarations as well,
2802 and suppresses inlining when (> DEBUG SPEED).
2803 * More fixes have been made to treatment of floating point exception
2804 treatment and other Unix signals. In particular, floating point
2805 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2806 * The detection and handling of control stack exhaustion (infinite
2807 or very deeply nested recursion) has changed. Stack exhaustion
2808 detection is now done by write-protecting pages at the OS level
2809 and applies at all optimization settings; when found, a
2810 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2811 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2812 be caught using IGNORE-ERRORS.
2813 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2814 correctly when transforming recursive LABELS functions to LETs.
2815 (thanks to Alexey Dejneka)
2816 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2817 that are names of constants or global variables.
2818 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2819 alien routines with docstrings.
2820 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2821 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2823 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2824 (thanks to Eric Marsden)
2825 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2826 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2827 * Bug fix: The SPARC backend can now compile functions involving
2828 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2829 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2830 to a functions expecting a PATHNAME-DESIGNATOR.
2831 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2832 lambda lists. (thanks to Alexey Dejneka)
2833 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2834 functions so that EXPORTing the name of the class doesn't cause
2835 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2836 to Antonio Martinez for reporting this)
2837 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2838 constant-folded without failing an assertion. (thanks to Einar
2839 Floystad Dorum for reporting this)
2840 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2841 types are now dealt with more correctly by the compiler.
2842 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2843 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2844 behaviour analogous to RENAME-FILE. This puts its behaviour more
2845 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2847 * The fasl file version number has changed again. (because of the
2848 bug fix involving the names of PCL MAKE-INSTANCE functions)
2850 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2851 * bug fix: Floating point exceptions are treated much more
2852 consistently on the x86/Linux and PPC/Linux platforms.
2853 * Array initialization with :INITIAL-ELEMENT is now much faster for
2854 cases when the compiler cannot open code the array creation, but
2855 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2856 array accesses have also seen a speed increase.
2857 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2858 specified. (This was at the root of some bad interactions between
2859 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2861 * bug fix: Internal error arguments for undefined functions are now
2862 computed correctly on the PPC/Linux platform.
2863 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2864 Raymond Toy's patch for CMU CL)
2865 * Support for the Solaris 9 operating environment has been included
2866 (thanks to Daniel Merritt)
2867 * A very ugly but hopefully complete draft of the missing FFI chapter
2868 of the manual has been created by reformatting the corresponding
2869 CMU CL manual chapter into (currently very ugly and incoherent)
2870 DocBook and bringing it up to date for SBCL behavior. Thus, the
2871 manual is now essentially complete, at least by my extreme
2872 once-and-only-once standards, whereby it's acceptable to refer to
2873 the doc strings of SB-EXT functions as the primary documentation.
2874 * The fasl file version number has changed again, due to cleanup of
2875 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2876 is no longer a static symbol.)
2878 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2879 * SBCL now builds with OpenMCL (version 0.12) as the
2880 cross-compilation host; also, more progress has been made toward
2881 bootstrapping under CLISP.
2882 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2884 * bug 158 fixed: The compiler can now deal with integer loop
2885 increments different from 1; fixing this turned out also to fix
2887 * bug 169 fixed: no more bogus warnings about using lexical bindings
2888 despite the presence of perfectly good SPECIAL declarations (thanks
2889 to David Lichteblau)
2890 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2891 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2892 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2894 * bug 180 fixed: Method combination specifications no longer ignore
2895 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2896 * bug fix: Structure type predicate functions now check their argument
2897 count as they should.
2898 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2899 correctly. (thanks to Pierre Mai)
2900 * minor incompatible change: The --noprogrammer option is deprecated
2901 in favor of the new --disable-debugger option, which is very similar.
2902 (The major difference is that it takes effect at a slightly different
2903 time at startup, causing handling of errors in --sysinit and
2904 --userinit files will be affected differently.) The
2905 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2906 been added to allow this functionality to be controlled from ordinary
2907 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2908 maintainers, who might want to run non-interactive scripts to
2909 build SBCL cores which will later be used interactively.)
2910 * minor incompatible change: The LOAD function no longer, when given
2911 a wild pathname to load, loads all files matching that pathname.
2912 Instead, an error of type FILE-ERROR is signalled.
2914 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2915 * bug 147 fixed: The compiler preserves its block link/count
2916 invariants more correctly now so that it doesn't crash. (thanks
2918 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2920 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2921 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2922 no-value-for-this-character as NIL (as specified by ANSI).
2923 * HOST-NAMESTRING on physical pathnames now returns a string that is
2924 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2925 (thanks to Christophe Rhodes)
2926 * The Alpha port handles icache flushing more correctly. (thanks to
2928 * More progress has been made toward bootstrapping under CLISP. (thanks
2929 to Christophe Rhodes)
2930 * The fasl file format has changed again, because dynamic loading
2931 on OpenBSD (which has non-ELF object files) motivated some cleanups
2932 in the way that foreign symbols are transformed and passed around.
2933 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2934 is no longer treated as whitespace by the reader, but instead as
2935 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2936 |A
\7fB|, instead of A as it used to.
2938 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2939 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2940 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2941 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2942 this as of 0.7.1.45, but was left out of the previous news section
2943 (thanks to Dan Barlow)
2944 * SBCL now runs on the Solaris operating system on SPARC architectures
2945 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2946 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2947 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2948 * SPARC backend cleanups, allowing builds of cores optimized for V8
2949 and V9 SPARCS, and also emission of code targeted to a particular
2950 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2952 * SBCL is closer to bootstrapping under CLISP, thanks to various
2953 fixes by Christophe Rhodes.
2954 * The fasl file format has changed again, to allow the compiler's
2955 INFO database to support symbol macros.
2956 * The user manual (in doc/) is formatted into HTML more nicely.
2957 (thanks to coreythomas)
2958 * The system is smarter about SUBTYPEP relationships, especially
2959 those involving NOT types (including types such as ATOM which are
2960 represented internally using NOT types). Thus SUBTYPEP is less
2961 likely to return (VALUES NIL NIL) in general, and in particular
2962 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2964 * The fasl file format has changed again, because the internal
2965 representation of types now includes a new slot to support the new
2966 SUBTYPEP-of-NOT-types logic.
2967 * (not a change in the main branch of SBCL, but a related prototype
2968 which can hopefully be merged into the main branch of SBCL in the
2969 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2970 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2971 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2972 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2973 dispatch macro character combinations. (thanks to Alexey Dejneka)
2974 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2975 that superficially look like logical namestrings correctly.
2976 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2978 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2979 default supplied-p) for &optional and &key arguments. (thanks to
2982 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2983 * incompatible change: The compiler is now less aggressive about
2984 tail call optimization, doing it only when (> SPACE DEBUG) or
2985 (> SPEED DEBUG). (This is an incompatible change because there are
2986 programs which relied on the old CMU-CL-style behavior to optimize
2987 away their unbounded recursion which will now die of stack overflow.)
2988 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2989 for non-GENCGC systems has been increased to 20M (since that
2990 seems much closer to the likely performance optimum for modern
2991 systems than the old 4M value was)
2992 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2993 and *DEBUG-PRINT-LEVEL*
2994 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2995 of CMU CL's support for SPARC, and various endianness and other
2996 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2997 * new syntactic sugar for the Unix command line: --load foo.bar is now
2998 an alternate notation for --eval '(load "foo.bar")'.
3000 ** The system now detects stack overflow and handles it gracefully,
3001 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3002 optimization settings. (This is a good thing in general, and
3003 its introduction in this version should be particularly timely
3004 for anyone whose code fails because of suppression of tail
3006 ** The system now hunts for the C variable "environ" in a more
3007 devious way, to avoid segfaults when the C library version differs
3008 between compile time and run time. (thanks to Christophe Rhodes)
3009 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3010 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3011 ** The compiler no longer issues bogus style warnings for undefined
3012 classes in the same source file as the DEFCLASSes which defined
3013 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3015 ** fixes in CONDITION class precedence list for undefined function
3016 errors (thanks to Alexei Dejneka)
3017 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3018 correctly. (thanks to Dan Barlow)
3019 ** portability fixes aiming at bootstrapping under CLISP (thanks
3020 to Dave McDonald and Christophe Rhodes)
3021 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3022 ** fixes in type translation and and type inference (thanks to
3024 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3025 ** various fixes in the new ports (thanks to Dan Barlow)
3026 * several changes related to debugging:
3027 ** suppression of tail recursion, as noted above
3028 ** stack overflow detection, as noted above
3029 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3030 is now the default. (For some time encapsulation has been more
3031 reliable than the breakpoint-based :ENCAPSULATE NIL
3032 implementation, at least on X86 systems; and I just noticed that
3033 encapsulation also seems closer to the spirit of the ANSI
3036 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3038 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3039 up properly again. (There was a packaging bug in 0.7.0 which
3040 left their definitions in SB-SYS::LOAD-FOREIGN and
3041 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3042 vital for most things which interface to C-level interfaces,
3043 like extensions working with sockets or databases or
3044 Perl-compatible regexes or whatever, and the need to fix
3045 this bug is the main reason that 0.7.1 was released so
3047 ** DEFGENERIC is now choosier about the methods it redefines, so that
3048 reLOADing a previously-LOADed file containing DEFGENERICs does
3049 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3050 cycle now works as it should. (thanks to Alexey Dejneka)
3051 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3052 fixed by Christophe Rhodes. (He actually submitted this patch
3053 months ago, and I delayed until after 0.7.0.)
3054 ** Bug 111 (internal compiler confusion about runtime checks on
3055 FUNCTION types) was fixed by Alexey Dejneka.
3056 * Some internal cleanups (getting rid of variables which aren't
3057 needed now that the byte interpreter is gone) caused the fasl
3058 file format number to change again.
3060 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3061 * major incompatible change: The default fasl file extension, i.e. the
3062 default extension for files produced by COMPILE-FILE, has changed
3063 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3065 ** There are many changes in the implementation of the compiler.
3066 SBCL is now essentially a compiler-only implementation of ANSI
3067 Common Lisp. EVAL still "interprets" a few special cases, but
3068 almost all the interesting cases are handled by creating
3069 a LAMBDA expression, calling COMPILE on it, then calling
3070 FUNCALL on the result.
3071 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3072 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3073 Since the code is newer, there might still be some new bugs
3074 (though not as many as before Martin Atzmueller's fixes:-). But
3075 the new code is substantially simpler and clearer, and hopefully
3076 any remaining bugs will be simpler, less fundamental, and more
3077 fixable then the bugs in the old code.
3078 ** The revised compiler is still a little unsteady on its feet.
3080 *** The debugging information it produces (particularly the names
3081 of FUNCTION objects) is sometimes much less useful than what
3082 the old compiler produced.
3083 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3084 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3085 within a MACROLET) has been temporarily weakened.
3086 ** There are new compiler optimizations for various functions:
3087 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3088 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3089 *** the math functions TRUNCATE, FLOOR, and CEILING
3090 *** the function-of-all-trades COERCE
3091 Mostly these should be transparent, but there's one
3092 potentially-annoying problem (bug 117): when the compiler
3093 inline-expands a function and does type analysis on the result,
3094 it can create control paths which have type mismatches, and
3095 when it can't prove that those control paths aren't taken,
3096 it will issue WARNINGs about the type mismatches. This is
3097 a particular problem in practice for the new sequence functions.
3098 It's not clear how this should be fixed, and for now, a
3099 workaround is given in the entry for 117 in the BUGS file.
3100 ** (Because of the interaction between the two previous items --
3101 occasional inlining problems and new inline expansions -- some
3102 of the new sequence function optimizations won't really kick in
3103 completely until debugging information, and then inlining, are
3104 straightened out in some future version.)
3105 * minor incompatible changes:
3106 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3107 DIRECTORY no longer implicitly promotes NIL slots of its
3108 pathname argument to :WILD. In particular, when you ask for the
3109 contents of a directory (which you used to be able to do without
3110 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3111 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3112 ** changes in behavior that ANSI explicitly defines to be
3113 implementation dependent:
3114 *** The new compiler-only implementation still conforms with ANSI,
3115 but acts a little different than before. Besides the obvious
3116 changes in performance tradeoffs (that the cost per form passed
3117 to EVAL has gone up, and the cost per form executed by EVAL
3118 has gone down), the behavior of the system changes a little
3119 because there are no longer any interpreted function objects.
3120 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3121 e.g. doing COMPILE on the output of interactive DEFUN is
3123 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3125 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3126 has changed from (:CL) to NIL.
3127 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3128 e.g. #\Newline and #\Tab, don't have names specified in the
3129 ANSI Common Lisp standard, is now based on their ASCII symbolic
3130 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3131 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3132 are no longer used for output.
3133 ** changes in internal implementation constants:
3134 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3135 4 million. (If your application spends a lot of time GCing and
3136 you have a lot of RAM, you might want to experiment with
3137 increasing it even more.)
3138 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3139 However, almost all old code should still continue to work without
3140 immediate update, as SB-C-CALL is now a (deprecated) nickname
3142 ** Old operator names in the style DEF-FOO are now deprecated in
3143 favor of new corresponding names DEFINE-FOO, for consistency with
3144 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3145 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3146 internal symbols, but a few supported extensions like
3147 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3148 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3149 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3150 etc. as you get deeper into recursive calls to the debugger
3151 command loop, instead of the old "5]", "5]]", "5]]]"
3152 sequence. (I was motivated to do this when squabbles between
3153 ILISP and SBCL left me very deeply nested in the debugger. In the
3154 short term, this change will probably provoke more ILISP/SBCL
3155 squabbles, but hopefully it will be an improvement in the long run.)
3156 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3157 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3158 function, since declaiming return types involving aliens is
3159 (1) annoyingly messy to do by hand and (2) vital to efficient
3160 compilation of code which calls such functions.
3161 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3162 longer reexported by the SB-EXT package. They're solely useful
3163 for alien code, so it seems more logical that you should get
3164 them from the SB-ALIEN package, not in SB-EXT.
3165 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3166 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3167 features. Instead, the code that they used to control is always
3168 built into the system.
3169 * many other bug fixes
3170 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3171 advantage of the new EVAL-WHEN stuff and to clean them up in
3172 general, and they are now more ANSI-compliant in a number of
3173 ways. Martin Atzmueller is responsible for a lot of this.
3174 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3176 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3177 *** correct ERROR type for various file operations
3178 *** some fixes for Lisp streams
3179 *** DEFMETHOD syntax checking
3180 *** changing old weird representation of debug information as
3181 strings (which, among their other deficiencies, don't transform
3182 correctly when you rename packages, and don't change their
3183 print representation when you change things like *PACKAGE*
3184 and *PRINT-LENGTH*) to symbols and lists of symbols
3185 He also made several improvements and fixed several bugs in DESCRIBE.
3186 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3188 *** misbehavior of WRITE-STRING/WRITE-LINE
3189 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3190 and several other LOOP problems as well
3191 *** DIRECTORY when similar filenames are present
3192 *** DEFGENERIC with :METHOD options
3193 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3194 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3195 *** argument ordering in FIND with :TEST option
3196 *** mishandled package designator argument in APROPOS-LIST
3197 *** various problems in the backquote readmacro
3198 *** a bug in APROPOS
3199 *** probably some others that I'm not describing very well here,
3200 since the CVS log documents them by reference to sbcl-devel
3201 messages, and the SourceForge archives aren't working well.:-(
3202 ** Dan Barlow improved the Alpha port (and is making progress on the
3203 PPC port, for those of you who think different).
3204 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3205 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3206 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3207 continues to work on the SPARC port (for those of you in a position
3208 to look down upon our little PC-compatible boxes from a great height).
3209 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3210 and uses that copy, rather than the current dynamic value, when
3211 it's trying to decide whether to truncate output. Thus e.g.
3212 (let ((*print-lines* 50))
3213 (pprint-logical-block (stream nil)
3215 (let ((*print-lines* 8))
3216 (print (aref possiblybigthings i) stream)))))
3217 should now truncate the logical block only at 50 lines, instead of
3218 often truncating it at 8 lines, as it did before.
3219 * The doc/cmucl/ directory, containing old CMU CL documentation
3220 from the time of the fork, is no longer part of the base system.
3221 SourceForge has shut down its anonymous FTP service, and with it
3222 my original plan for distributing the old CMU CL documentation
3223 there. For now, if you need these files you can download an old
3224 SBCL source release and extract them from it.
3225 * The fasl file version number changed again, for dozens of reasons,
3226 some of which are apparent above.
3228 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3229 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3230 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3231 patch, so that DISASSEMBLE output is much nicer.
3232 * The code in the SB-PROFILE package now seems reasonably stable.
3233 I still haven't decided what the final interface should look like
3234 (I'd like PROFILE to interact cleanly with TRACE, since both
3235 facilities use function encapsulation) but if you have a need
3236 for profiling now, you can probably use it successfully with
3237 the current CMU-CL-style interface.
3238 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3239 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3240 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3241 link now returns the dangling link itself, and for similar
3242 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3243 link itself. (In these cases the old code signalled an error and
3244 looped endlessly, respectively.) Thus, DIRECTORY now works even
3245 in the presence of dangling and cyclic symbolic links.
3246 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3247 is now a supported extension again, since the consensus on
3248 sbcl-devel was that it can be useful for ordinary development
3249 work, not just for debugging SBCL itself.
3250 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3251 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3252 that currently-defined functions might be redefined later with
3253 different return types.
3254 * Hash tables can be printed readably, as inspired by CMU CL code
3255 of Eric Marsden and SBCL code of Martin Atzmueller.
3256 * better error handling in CLOS method combination, thanks to
3257 Martin Atzmueller porting Pierre Mai's CMU CL patches
3258 * more overflow fixes for >16Mbyte I/O buffers
3259 * A bug in READ has been fixed, so that now a single Ctrl-D
3260 character suffices to cause end-of-file on character streams.
3261 In particular, now you only need one Ctrl-D at the command
3262 line (not two) to exit SBCL.
3263 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3265 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3266 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3267 does the right thing.
3268 * The implementation of some type tests, especially for CONDITION
3269 types, is now tidier and maybe faster, due to CMU CL code
3270 originally by Douglas Crosher, ported by Martin Atzmueller.
3271 * Some math functions have been fixed, and there are new
3272 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3273 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3274 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3275 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3276 likely to be built into sbcl-0.7.0.)
3277 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3278 CL, ported to SBCL by Martin Atzmueller)
3279 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3280 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3281 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3282 * There's a new slam.sh hack to shorten the edit/compile/debug
3283 cycle for low-level changes to SBCL itself, and a new
3284 :SB-AFTER-XC-CORE target feature to control the generation of
3285 the after-xc.core file needed by slam.sh.
3286 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3287 COMPILE-FILE is no longer supported, so that now every function
3288 gets an entry point, so that block compilation looks a little
3289 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3290 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3291 returns the number of bytes consed since the system started,
3292 rather than the number consed since the first time the function
3293 was called. (The new definition parallels ANSI functions like
3294 CL:GET-INTERNAL-RUN-TIME.)
3295 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3296 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3297 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3298 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3299 * Fasl file version numbers are now independent of the target CPU,
3300 since historically most system changes which required version
3301 number changes have affected all CPUs equally. Similarly,
3302 the byte fasl file version is now equal to the ordinary
3305 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3306 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3307 is no longer recognized. I apologize for this, because it was
3308 listed in SB-EXT as a supported extension, but I found that
3309 its existing behavior was poorly specified, as well as incorrectly
3310 specified, and it looked like too much of a mess to straighten it
3311 out. I have enough on my hands trying to get ANSI stuff to work..
3312 * many patches ported from CMU CL by Martin Atzmueller, with
3313 half a dozen bug fixes in pretty-printing and the debugger, and
3314 half a dozen others elsewhere
3315 * fixed bug 13: Floating point infinities are now supported again.
3316 They might still be a little bit flaky, but thanks to bug reports
3317 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3318 as flaky as they were.
3319 * The --noprogrammer command line option is now supported. (Its
3320 behavior is slightly different in detail from what the old man
3321 page claimed it would do, but it's still appropriate under the
3322 same circumstances that the man page talks about.)
3323 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3324 are now supported, and enabled by default. Thus, the compiler can
3325 handle many floating point and complex operations much less
3326 inefficiently. (Thus e.g. you can implement a complex FFT
3328 * The compiler now detects type mismatches between DECLAIM FTYPE
3329 and DEFUN better, and implements CHECK-TYPE more correctly, and
3330 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3331 thanks to patches from Martin Atzmueller.
3332 * various fixes to make the cross-compiler more portable to
3333 ANSI-conforming-but-different cross-compilation hosts (notably
3334 Lispworks for Windows, following bug reports from Arthur Lemmens)
3335 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3336 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3337 fixed thanks to Pierre Mai's CMU CL patches.
3338 * fixes to keep the system from overflowing internal counters when
3339 it tries to use i/o buffers larger than 16M bytes
3340 * fixed bug 45a: Various internal functions required to support
3341 complex special functions have been merged from CMU CL sources.
3342 (When I was first setting up SBCL, I misunderstood a compile-time
3343 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3344 * improved support for type intersection and union, fixing bug 12
3345 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3346 more obscure bugs as well
3347 * some steps toward byte-compiling non-performance-critical
3348 parts of the system, courtesy of patches from Martin Atzmueller
3349 * Christophe Rhodes has made some debian packages of sbcl at
3350 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3351 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3352 stable, but are nonetheless usable. When he's ready, I'd be happy
3353 to add them to the SourceForge "File Releases" section. (And if
3354 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3355 * new fasl file format version number (because of changes in
3356 internal representation of (OR ..) types to accommodate the new
3357 support for (AND ..) types, among other things)
3359 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3360 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3362 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3364 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3365 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3366 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3367 * DESCRIBE now works on structure objects again.
3368 * Most function call argument type mismatches are now handled as
3369 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3370 know whether the function will be redefined before the call is
3371 executed. (The compiler could flag local calls with full WARNINGs,
3372 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3373 it doesn't keep track of enough information to know whether calls
3374 are local in this sense.)
3375 * Compiler output is now more verbose, with messages truncated
3376 later than before. (There should be some supported way for users
3377 to override the default verbosity, but I haven't decided how to
3378 provide it yet, so this behavior is still controlled by the internal
3379 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3380 src/compiler/ir1util.lisp.)
3381 * Fasl file format version numbers have increased again, because
3382 support for the Gray streams extension changes the layout of the
3383 system's STREAM objects.
3384 * The Gray subclassable streams extension now works, thanks to a
3385 patch from Martin Atzmueller.
3386 * The full LOAD-FOREIGN extension (not just the primitive
3387 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3388 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3389 but like most other programs, it defaults to copying the Unix
3390 environment from the original process instead of starting the
3391 new process in an empty environment.
3392 * Extensions which manipulate the Unix environment now support
3393 an :ENVIRONMENT keyword option which doesn't smash case or
3394 do other bad things. The CMU-CL-style :ENV option is retained
3395 for porting convenience.
3396 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3397 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3399 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3401 * A patch from Martin Atzmueller seems to have solved the SIGINT
3402 problem, and as far as we know, signal-handling now works cleanly.
3403 (If you find any new bugs, please report them!)
3404 * The system no longer defaults Lisp source file names to types
3405 ".l", ".cl", or ".lsp", but only to ".lisp".
3406 * The compiler no longer uses special default file extensions for
3407 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3408 seems to expect a single default extension for all compiled code,
3409 and there's no compelling reason to try to stretch the standard
3410 to allow two different extensions.) Instead, byte-compiled files
3411 default to the same extension as native-compiled files.
3412 * Fasl file format version numbers have increased again, because
3413 a rearrangement of internal implementation packages made some
3414 dumped symbols in old fasl files unreadable in new cores.
3415 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3416 many fewer weird special cases.
3417 * Bug #17 (differing COMPILE-FILE behavior between logical and
3418 physical pathnames) has been fixed, and some related misbehavior too,
3419 thanks to a patch from Martin Atzmueller.
3420 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3421 by Tim Moore, ported to SBCL by Martin Atzmueller.
3422 * Martin Atzmueller fixed several filesystem-related problems,
3423 including bug #36, in part by porting CMU CL patches, which were
3424 written in part by Paul Werkowski.
3425 * More compiler warnings in src/runtime/ are gone, thanks to
3426 more patches from Martin Atzmueller.
3427 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3430 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3432 * DESCRIBE now works on CONDITION objects.
3433 * The debugger now handles errors which arise when trying to print
3434 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3436 * The build system now uses an additional file, customize-target-features.lisp,
3437 to allow local modifications to the target *FEATURES* list. (The point of
3438 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3439 debugging features enabled, without having to worry about propagating it
3440 into everyone's system when I do a "cvs update".) When no
3441 customize-target-features.lisp file exists, the target *FEATURES* list
3442 should be constructed the same way as before.
3443 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3444 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3445 warn about behavior which is undefined under the ANSI spec. Note: This
3446 is specified by ANSI, but it's not very popular with programmers.
3447 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3448 macro in the SBCL sources for an example of a workaround which you
3449 might use to make portable ANSI-standard code which does what you want.
3450 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3451 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3452 when it's used as a non-toplevel form. (This is required in order
3453 to implement the DEFCONSTANT-EQX macro.)
3454 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3455 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3456 funny things, due to bugs in the implementation of EVAL-WHEN
3457 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3458 non-toplevel DEFCONSTANTs are uncommon.)
3459 * The core file version number and fasl file version number have been
3460 incremented, because the old noncompliant DEFCONSTANT behavior involved
3461 calling functions which no longer exist, and because I also took the
3462 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3463 * fixed bug 1 (error handling before read-eval-print loop starts), and
3464 redid debugger restarts and related debugger commands somewhat while
3466 ** The QUIT debugger command is gone, since it did something
3467 rather different than the SB-EXT:QUIT command, and since it never
3468 worked properly outside the main toplevel read/eval/print loop.
3469 Invoking the new TOPLEVEL restart provides the same functionality.
3470 ** The GO debugger command is also gone, since you can just invoke
3471 the CONTINUE restart directly instead.
3472 ** The TOP debugger command is also gone, since it's redundant with the
3473 FRAME 0 command, and since it interfered with abbreviations for the
3475 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3477 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3478 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3479 some porting work by Martin Atzmueller)
3480 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3481 with a boatload of patches which he ported to SBCL. Now that those
3483 ** The system tries to make sure that its low-priority messages
3484 are prefixed by semicolons, to help people who like to use
3485 syntax highlighting in their ILISP buffer. (This patch
3486 was originally due to Raymond Toy.)
3487 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3488 patches originally written by Raymond Toy.
3489 ** The compiler understands coercion between single-value and
3490 multiple-VALUES type expressions better, getting rid of some very
3491 weird behavior, thanks to patches originally by Robert MacLachlan
3492 and Douglas Crosher.
3493 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3494 lambda lists, thanks to a patch originally by Pierre Mai.
3495 ** The system no longer bogusly warns about "abbreviated type
3497 ** The compiler gets less confused by inlining and RETURN-FROM,
3498 thanks to some patches originally by Tim Moore.
3499 ** The system no longer hangs when dumping circular lists to fasl
3500 files, thanks to a patch originally from Douglas Crosher.
3501 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3502 undefined function error.
3503 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3504 in structure slot initforms) for now, documented workaround instead:-|
3505 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3506 * fixed bug 5: added stubs for various Gray stream functions called
3507 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3508 installed, at least appropriate type errors are generated
3509 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3510 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3511 consistently in DEFMETHOD forms.
3512 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3513 it doesn't seem to affect SBCL after all
3514 * The C runtime system now builds with better optimization and many
3515 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3517 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3519 * The system is now under CVS at SourceForge (instead of the
3520 CVS repository on my home machine).
3521 * The new signal handling code has been tweaked to treat register
3522 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3523 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3524 downstream, e.g. in debug-int.lisp, has implicit dependencies
3525 on the unsignedness of integer representation of machine words,
3526 and that caused the system to bomb out with infinite regress
3527 when trying to recover from type errors involving signed values,
3528 e.g. (BUTLAST '(1 2 3) -1).)
3529 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3530 (This was one of the bugs Peter Van Eynde reported back in July.)
3531 * The system now uses code inspired by Colin Walters' O(N)
3532 implementation of MAP (from the cmucl-imp@cons.org mailing
3533 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3534 inline the MAP operation, and there is more than one
3535 sequence argument to the MAP call (so that it can't just
3536 do ETYPECASE once and for all based on the type of the
3537 single sequence argument). (The old non-inline implementation
3538 of the general M-argument sequence-of-length-N case required
3539 O(M*N*N) time when any of the sequence arguments were LISTs.)
3540 * The QUIT :UNIX-CODE keyword argument has been renamed to
3541 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3542 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3544 * Raymond Wiker's patches to port dynamic loading from Linux to
3545 FreeBSD have been added.
3546 * The BUGS file is now more nearly up to date, thanks in large part
3547 to Martin Atzmueller's review of it.
3548 * The debugger now flushes standard output streams before it begins
3549 its output ("debugger invoked" and so forth).
3550 * The core version number and fasl file version number have both
3551 been incremented, because of incompatible changes in the layout
3553 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3554 used to not be called for a saved Lisp image.)
3555 * Martin Atzmueller's version of a patch to fix a compiler crash,
3556 as posted on sbcl-devel 13 September 2000, has been installed.
3557 * Instead of installing Martin Atzmueller's patch for the
3558 compiler transform for SUBSEQ, I deleted the compiler transform,
3559 and transforms for some similar consing operations.
3560 * A bug in signal handling which kept TRACE from working on OpenBSD
3562 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3563 away by constant folding
3564 * The system now defines its address space constants in one place
3565 (in the Lisp sources), and propagates them automatically elsewhere
3566 (through GENESIS and the sbcl.h file). Therefore, patching the
3567 address map is less unnecessarily tedious and error-prone. The
3568 Lisp names of address space constants have also been systematized.
3569 * CVS tags like dollar-Header-dollar have been removed from
3570 the sources, because they have never saved me trouble and
3571 they've been source of trouble working with patches and other
3572 diff-related operations.
3573 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3574 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3576 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3578 * The system has been ported to OpenBSD.
3579 * The system now compiles with a simple "sh make.sh" on the systems
3580 that it's supported on. I.e., now you no longer need to tweak
3581 text in the target-features.lisp-expr and symlinks in src/runtime/
3582 by hand, the make.sh takes care of it for you.
3583 * The system is no longer so grossly inefficient when compiling code
3584 involving vectors implemented as general (not simple) vectors (VECTOR T),
3585 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3586 which dares to use the various sequence functions on non-simple
3587 vectors, takes less of a performance hit.
3588 * There is now a primitive type predicate VECTOR-T-P
3589 to test for the (VECTOR T) type, so that e.g.
3590 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3591 can now be compiled with some semblance of efficiency. (The old code
3592 turned the type declaration into a full call to %TYPEP at runtime!)
3593 * AREF on (VECTOR T) is still not fast, since it's still compiled
3594 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3595 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3596 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3597 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3598 without making full calls to SUBTYPEP at runtime.
3599 (Some analogous efficiency issues for non-simple vectors specialized to
3600 element types other than T, or for non-simple multidimensional arrays,
3601 have not been addressed. They could almost certainly be handled the
3602 same way if anyone is motivated to do so.)
3603 * The changes in array handling break binary compatibility, so
3604 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3605 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3606 instead of (VALUES T T).
3607 * By following the instructions that Dan Barlow posted to sbcl-devel
3608 on 2 July 2000, I was able to enable primitive dynamic object
3609 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3610 functionality is not implemented (since it calls ld to resolve
3611 library references automatically, requiring RUN-PROGRAM for its
3612 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3613 try to resolve library references) is now supported.
3614 * The system now flushes the standard output streams when it terminates,
3615 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3616 them at several other probably-convenient times, e.g. in each pass of
3617 the toplevel read-eval-print loop, and after evaluating a form given
3618 as an "--eval" command-line option. (These changes were motivated by a
3619 discussion of stream flushing issues on cmucl-imp in August 2000.)
3620 * The source transform for TYPEP of array types no longer assumes
3621 that an array whose element type is a not-yet-defined type
3622 is implemented as an array of T, but instead punts, so that the
3623 type will be interpreted at runtime.
3624 * There is now some support for cross-compiling in make.sh: each of
3625 the phases of make.sh has its own script. (This should be transparent
3626 to people doing ordinary, non-cross-compile builds.)
3627 * Since my laptop doesn't have hundreds of megabytes of memory like
3628 my desktop machine, I became more motivated to do some items on
3629 my to-do list in order to reduce the size of the system a little:
3630 ** Arrange for various needed-only-at-cold-init things to be
3631 uninterned after cold init. To support this, those things have
3632 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3633 symbols with such names are now uninterned after cold init).
3634 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3635 fasl files for cold load.
3636 ** Remove the old compiler structure pooling code (which used to
3637 be conditional on the target feature :SB-ALLOC) completely.
3638 ** Redo the representation of some data in cold init to be more compact.
3639 (I also looked into supporting byte compiled code at bootstrap time,
3640 which would probably reduce the size of the system a lot, but that
3641 looked too complicated, so I punted for now.)
3642 * The maximum signal nesting depth in the src/runtime/ support code has
3643 been reduced from 4096 to 256. (I don't know any reason for the very
3644 large old value. If the new smaller value turns out to break something,
3645 I'll probably just bump it back up.)
3646 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3648 * Many, many bugs reported by Peter Van Eynde have been added to
3649 the BUGS list; some have even been fixed.
3650 * While enabling dynamic object file loading, I tried to make the
3651 code easier to understand, renaming various functions and variables
3652 with less ambiguous names, and changing some function calling
3653 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3654 * While trying to figure out how to do the OpenBSD port, I tried to
3655 clean up some of the code in src/runtime/. In particular, I dropped
3656 support for non-POSIX signal handling, added various comments,
3657 tweaked the code to reduce the number of compilation warnings, and
3658 renamed some files to increase consistency.
3659 * To support the new automatic configuration functionality in make.sh,
3660 the source file target-features.lisp-expr has been replaced with the
3661 source file base-target-features.lisp-expr and the machine-generated
3662 file local-target-features.lisp-expr.
3663 * fixed a stupid quoting error in make.sh so that using CMU CL
3664 "lisp -batch" as cross-compilation host works again
3666 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3668 * DESCRIBE no longer tries to call itself recursively to describe
3669 bound/fbound values, so that it no longer fails on symbols which are
3670 bound to themselves (like keywords, T, and NIL).
3671 * DESCRIBE now works on generic functions.
3672 * The printer now prints less-screwed-up representations of closures
3673 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3674 * A private symbol is used instead of the :EMPTY keyword previously
3675 used to mark empty slots in hash tables. Thus
3676 (DEFVAR *HT* (MAKE-HASH-TABLE))
3677 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3678 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3679 now does what ANSI says that it should. (You can still get
3680 similar noncompliant behavior if bang on the hash table
3681 implementation with all the symbols you get back from
3682 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3683 This breaks binary compatibility, since tests for equality to
3684 :EMPTY are wired into things like the macroexpansion of
3685 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3687 * There's now a minimal placeholder implementation for CL:STEP,
3688 as required by ANSI.
3689 * An obscure bug in the interaction of the normal compiler, the byte
3690 compiler, inlining, and structure predicates has been patched
3691 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3692 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3694 * Missing ordinary arguments in a macro call are now detected even
3695 when the macro lambda list contains &KEY or &REST.
3696 * The debugger no longer complains about encountering the top of the
3697 stack when you type "FRAME 0" to explicitly instruct it to go to
3698 the top of the stack. And it now prints the frame you request even
3699 if it's the current frame (instead of saying "You are here.").
3700 * As specified by ANSI, the system now always prints keywords
3701 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3703 * The default initial SIZE of HASH-TABLEs is now smaller.
3704 * Type information from CLOS class dispatch is now propagated
3705 into DEFMETHOD bodies, so that e.g.
3706 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3708 is now basically equivalent to
3709 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3710 (DECLARE (TYPE SINGLE-FLOAT X))
3712 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3713 operation, without having to do run-time type dispatch.
3714 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3715 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3716 * Since I don't seem to be making big file reorganizations very often
3717 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3718 is overflowing my ability to conveniently back them up), I've finally
3719 checked the system into CVS. (The CVS repository is on my home system,
3720 not at SourceForge -- putting it on SourceForge might come later.)
3721 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3722 high-level GC-NOTIFY-FOO functions send their output. (There's
3723 still very little control of where low-level verbose GC functions
3724 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3725 less than it used to -- the GC-NOTIFY-FOO functions are now under
3726 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3727 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3728 in only one place in the source code, and propagates it automatically
3729 everywhere that it's needed. Thus e.g. when I bump the version from
3730 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3731 * The C source files now include boilerplate legalese and documentation
3732 at the head of each file (just as the Lisp source files already did).
3733 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3734 to his page will be replaced with a link to his new CLiki service.
3736 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3738 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3739 * The build process now looks for GNU make under the default name "gmake",
3740 instead of "make" as it used to. If GNU make is not available as "gmake"
3741 on your system, you can change this default behavior by setting the
3742 GNUMAKE environment variable.
3743 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3744 can build without error under CMU CL.
3746 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3748 * There is now a partial SBCL user manual (with some new text and some
3749 text cribbed from the CMU CL manual).
3750 * The beginnings of a profiler have been added (starting with the
3751 CMU CL profiler and simplifying and cleaning up). Eventually the
3752 main interface should be through the TRACE macro, but for now,
3753 it's still accessed through vaguely CMU-CL-style functions and macros
3754 exported from the package SB-PROFILE.
3755 * Some problems left over from porting CMU CL to the new
3756 cross-compilation bootstrap process have been cleaned up:
3757 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3758 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3759 part when getting rid of the compiler *BACKEND* stuff.)
3760 ** The value of *NULL-TYPE* was screwed up, because it was
3761 being initialized before the type system knew the final
3762 definition of the 'NULL type. This screwed up several key
3763 optimizations in the compiler, causing inefficiency in all sorts
3764 of places. (I found it because I wanted to understand why
3765 GET-INTERNAL-RUN-TIME was consing.)
3766 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3767 PROCLAIM FTYPE information. Unfortunately this broke binary
3768 compatibility again, since now the forms output by DEFGENERIC
3769 to refer to functions which didn't exist in 0.6.3.
3770 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3771 can use the new (as of 0.6.3) transform for SOME into MAP into
3773 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3774 values to (INTEGER 0 1000000), so that the time code will no longer
3775 occasionally get blown up by Linux returning 1000000 microseconds
3776 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3777 its output conform to the ANSI spec. (Alas, this makes its output
3778 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3779 * A full call to MAP NIL with a single sequence argument no longer conses.
3780 * fixes to problems pointed out by Martin Atzmueller:
3781 * The manual page no longer talks about multiprocessing as though
3782 it were currently supported.
3783 * The ILISP support patches have been removed from the distribution,
3784 because as of version 5.10.1, ILISP now supports SBCL without us
3785 having to maintain patches.
3786 * added a modified version of Raymond Toy's recent CMU CL patch for
3787 EQUALP comparison of HASH-TABLE
3789 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3791 * The system still can't cross-compile itself with
3792 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3793 entails), but at least it can compile more of itself that way
3794 than it used to be able to, and various buglets which were uncovered
3795 by trying to cross-compile itself that way have now been fixed.
3796 * This release breaks binary compatibility again. This time
3797 at least I've incremented the FASL file format version to 2, so that the
3798 problem can be detected reliably instead of just causing weird errors.
3799 * various new style warnings:
3800 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3801 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3802 ** using the lexical binding of a variable named in the *FOO* style
3803 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3804 as specified by ANSI.
3805 * *RANDOM-STATE* is no longer automatically initialized from
3806 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3807 default behavior of the system is to repeat its behavior every time
3808 it's run. If you'd like to change this behavior, you can always
3809 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3810 old convention there was no comparably easy way to get the system to
3811 repeat its behavior every time it was run.
3812 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3813 FTYPE declarations has been removed, in favor of their ANSI
3814 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3815 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3816 the types of their sequence arguments can be determined at compile time.
3817 This is done through a new open code expansion for MAP which eliminates
3818 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3819 argument types can be determined at compile time.
3820 * The optimizer now transforms COERCE into an identity operation when it
3821 can prove that the coerced object is already of the correct type. (This
3822 can be a win for machine generated code, including the output of other
3823 optimization transforms, such as the MAP transform above.)
3824 * Credit information has been moved from source file headers into CREDITS.
3825 * Source file headers have been made more standard.
3826 * The CASE macro now compiles without complaining even when it has
3829 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3831 * (Note that the way that the PCL macroexpansions were rewritten
3832 to accommodate the change in DEFGENERIC below breaks binary
3833 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3834 not run under sbcl-0.6.2. Once we get out of alpha releases,
3835 i.e. hit release 1.0.0, we'll probably try to maintain binary
3836 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3837 and sbcl-1.4.4. Until then, however, it might be fairly common
3838 for maintenance releases to break binary compatibility.)
3839 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3841 * The reporting of unhandled signals has been changed to print some
3842 explanatory text as well as the report form. (Previously only
3843 the report form was printed.)
3844 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3845 it defines, so that the compiler no longer issues undefined function
3846 warnings for compiled-but-not-yet-loaded generic functions.
3847 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3848 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3849 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3850 section of the ANSI spec are supported.
3851 * The "" nickname for the "KEYWORD" package has been removed.
3852 The reader still handles symbol tokens which begin with a package marker
3853 as keywords, but it doesn't expose its mechanism for doing so in the
3854 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3855 * The system now issues STYLE-WARNINGs for contradictory TYPE
3856 proclamations. (Warnings for contradictory FTYPE proclamations would
3857 be nice too, but those can't be done usefully unless the type system
3858 is made smarter about FUNCTION types.)
3859 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3860 systematized, so that "*target-*.lisp is supposed to exist only on the
3861 target and imply that there's a related file which exists on the
3862 host, and *host-*.lisp is supposed to exist only on the host and imply
3863 that there's a related file which exists on the target. This involves a
3864 lot of renaming. Hopefully the acute confusion caused by the renaming
3865 will be justified by the reduction in chronic confusion..
3866 ** runtime-type.lisp -> early-target-type.lisp
3867 ** target-type.lisp -> late-target-type.lisp
3868 ** early-host-format.lisp -> early-format.lisp
3869 ** late-host-format.lisp -> late-format.lisp
3870 ** host-error.lisp -> misc-error.lisp
3871 ** early-error.lisp -> early-target-error.lisp
3872 ** late-error.lisp -> late-target-error.lisp
3873 ** host-defboot.lisp -> early-defboot.lisp
3874 ** code/misc.lisp -> code/target-misc.lisp
3875 ** code/host-misc.lisp -> code/misc.lisp
3876 ** code/numbers.lisp -> code/target-numbers.lisp
3877 ** code/early-numbers.lisp -> numbers.lisp
3878 ** early-host-type.lisp -> early-type.lisp
3879 ** late-host-type.lisp -> late-type.lisp
3880 ** host-typep.lisp -> typep.lisp
3881 ** load.lisp -> target-load.lisp
3882 ** host-load.lisp -> load.lisp
3883 ** host-disassem.lisp -> disassem.lisp
3884 ** host-insts.lisp -> insts.lisp
3885 ** byte-comp.lisp -> target-byte-comp.lisp
3886 ** host-byte-comp.lisp -> byte-comp.lisp
3887 ** host-signal.lisp -> signal.lisp
3888 ** host-defstruct.lisp -> defstruct.lisp
3889 ** late-target-type.lisp -> deftypes-for-target.lisp
3890 Furthermore, several other previously target-only files foo.lisp (e.g.
3891 hash-table.lisp and random.lisp) have been split into a target-and-host
3892 foo.lisp file and a target-only target-foo.lisp file, with their key type
3893 definitions in the target-and-host part, so that the cross-compiler will
3894 know more about target types.
3895 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3896 gone away. In their place are various *BACKEND-FOO* variables
3897 corresponding to the slots of the old structure.
3898 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3899 into the target SBCL has been fixed.
3900 * The chill.lisp system for loading cold code into a running SBCL
3902 * Support for the CMU CL "scavenger hook" extension has been removed.
3903 (It was undocumented and unused in the CMU CL sources that SBCL was
3904 derived from, and stale in sbcl-0.6.1.)
3905 * Various errors in the cross-compiler type system were detected
3906 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3907 (enabling various consistency checks). Many of them were fixed,
3908 but some hard problems remain, so the compiler is back to
3909 running without *TYPE-SYSTEM-INITIALIZED* for now.
3910 * As part of the cross-compiler type system cleanup, I implemented
3911 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3912 * I have started adding UNCROSS calls throughout the type system
3913 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3914 on cross-compiler input files will be able to go away, and various
3916 * CONSTANTP now returns true for quoted forms (as explicitly required
3919 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3921 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3922 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3923 (MAKE-LIST -1). In the longer term, it ought to become true
3924 that declarations are assertions even at SAFETY 1. For now, it's not
3925 quite true even at SAFETY 3, but it's at least more nearly true..
3926 (Note that this change seems to increases the size of the system by
3927 O(5%) and to decrease the speed of the compiler by 20% or more.)
3928 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3929 for the problem of printing dozens of lines of distracting information
3930 about low-level system machinery as part of the top stack frame
3931 on entry to the debugger when an undefined function was called.
3932 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3933 is not reset to COMMON-LISP-USER.
3934 * Compilation of stuff related to dyncount.lisp has been made conditional
3935 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3936 smaller. The various dyncount-related symbols have been moved into
3937 a new "SB-DYNCOUNT" package.
3938 * tty-inspect.lisp has been renamed to inspect.lisp.
3939 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3940 feature has gone away. (When we eventually port to other flavors of
3941 libc and/or Unix, we'll try to make the differences between flavors
3942 invisible at the user level.)
3943 * Various other *FEATURES* tags, and/or their associated conditionals,
3944 have been removed if obsolescent, or given better documentation, or
3945 sometimes given more-mnemonic names.
3947 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3949 * tidied up "make.sh" script
3950 * tidied up system directory structure
3951 * better "clean.sh" behavior
3952 * added doc/FOR-CMUCL-DEVELOPERS
3953 * many many small tweaks to output format, e.g. removing possibly-confusing
3954 trailing #\. character in DESCRIBE-INSTANCE
3955 * (EQUALP #\A 'A) no longer signals an error.
3956 * new hashing code, including EQUALP hashing
3957 * tidied up Lisp initialization and toplevel
3958 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3959 * command line argument processing
3960 * added POSIX-GETENV function to deal with Unix-ish environment variables
3961 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3962 terminating SBCL on EOF
3963 * non-verbose GC by default
3964 * There is no more "sbcl" shell script; the sbcl file is now the C
3965 runtime executable (just like CMU CL).
3966 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3968 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3969 symbol and package information as Lisp native symbol and package objects
3970 instead of strings naming symbols and strings naming packages. This way,
3971 whenever packages are renamed (as in warm init), debug information is
3972 transformed along with everything else.
3973 * tweaked the optimization policy declarations which control the building
3974 of SBCL itself. Now, among other things, the system no longer saves
3975 source location debugging information. (This helps two problems at once
3976 by reducing SBCL size and by keeping SBCL from trying to look for its
3977 sources -- which may not exist -- when reporting errors.)
3978 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3979 debugging and testing purposes
3980 * cleaned up printing, making the printer call PRINT-OBJECT for
3981 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3982 methods, giving nearly-ANSI behavior
3983 * converted almost all special variables to use *FOO* naming convention
3984 * deleted PARSE-TIME functionality, since it can be done portably
3985 * moved some files out of cold init into warm init
3986 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3988 * regularized formatting of source files
3989 * added an install.sh script
3990 * fixed ridiculous memory usage of cross-compiler by making
3991 compiler/alloc.lisp not try to do pooling unless it can hook
3992 itself into the GC of the cross-compilation host. Now the system
3993 builds nicely on my old laptop.
3994 * added :SB-ALLOC in target-features.lisp-expr
3995 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3996 was not implemented)
3997 * re-did condition handling and note reporting in the compiler. Notes
3998 are no longer handled by signalling conditions. Style warnings
3999 and warnings are handled more correctly and reported in such a way
4000 that it's easy to find one or the other in your output (so that you
4001 can e.g. figure out which of many problems caused COMPILE-FILE to
4003 * changed the severity of several compiler warnings from full WARNING
4004 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4005 compiler note reporting so that it doesn't use the condition system
4006 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4007 COMPILE-FILE command)
4008 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4009 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4010 no longer supported, since their implementation was deeply intertwingled
4011 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4012 * removed bogus "support" for compiler macros named (SETF FOO), and
4013 removed the compiler macro for SETF INFO (but only after making a fool
4014 of myself on the cmucl-imp mailing list by posting a bogus patch for
4015 DEFINE-COMPILER-MACRO..)
4016 * Compiled files containing forms which have side effects on the Lisp
4017 reader (such as DEFPACKAGE forms) are now handled more correctly.
4018 (Compiler queuing of top level lambdas has been suppressed by setting
4019 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4020 * deleted various currently-unused source files, e.g. gengc.lisp. They
4021 may be added back at some point e.g. when porting to other architectures,
4022 but until they are it's distracting to distribute them and to try to
4024 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4025 there were so many of them they're just distractions, and UNCROSS is
4026 known to be able to handle the current sources
4027 * moved PROFILE functionality into TRACE, so that it will be clear
4028 how the wrapping and unwrapping of functions when you profile them
4029 interacts with the wrapping and unwrapping of functions when you
4030 trace them. (Actually, the functionality isn't there yet, but at least
4031 the interface specification is there. Hopefully, the functionality will
4032 arrive with some future maintenance release.)
4033 * removed host-oops.lisp
4034 * changed signature of QUIT function to allow UNIX-CODE argument
4035 * fixed READ-SEQUENCE bug
4036 * tweaked verbose GC output so that it looks more like the progress
4037 output that ANSI specifies for functions like LOAD
4038 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4039 * added <http://sbcl.sourceforge.com> to the banner information printed by