1 changes in sbcl-0.8.22 relative to sbcl-0.8.21:
2 * incompatible change: the --noprogrammer option, deprecated since
3 version 0.7.5, has been removed. Please use the equivalent
4 --disable-debugger option instead.
5 * Null lexical environments are now printed as #<NULL-LEXENV>,
6 significantly reducing the amount of clutter in typical backtraces.
7 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
8 as other specialized array types, is much faster. SUBSEQ and
9 COPY-SEQ on such arrays have also been sped up.
10 * fixed bug: compiler error messages and summaries are now printed to
11 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
12 * fixed inference of the upper bound of an iteration variable.
13 (reported by Rajat Datta).
14 * fixed bug 376: CONJUGATE type deriver.
15 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
16 (reported by Baughn on #lisp)
17 * a cross-compiler bug on non-x86 platforms has been identified and
18 fixed. (thanks to Bruno Haible)
19 * improvements to the MIPS runtime code for increased stability.
20 (thanks to Thiemo Seufer)
21 * fixed some bugs related to Unicode integration:
22 ** the restarts for recovering from input and output encoding
23 errors only appear when there is in fact such an error to
25 * fixed some bugs revealed by Paul Dietz' test suite:
26 ** MISC.549 and similar: late transformation of unsafe type
27 assertions into derived types caused unexpected code
29 ** SCALE-FLOAT type deriver is less wrong.
30 ** type derivers for EXP, LOG and similar functions compute result
31 types for complex arguments better.
32 ** (MISC.563) CONJUGATE type deriver works for very restricted
34 ** out-of-line type testers for character strings are available.
35 ** EQUAL compiler transform understands specialness of objects
37 ** accessing double-floats stored on the stack now works on x86-64.
38 ** debugger internals could sometimes create invalid lispobjs,
39 resulting in GC crashes.
41 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
42 * incompatible change: thread support for non-NPTL systems has
43 been removed - locking is buggy and unreliable. A threaded
44 SBCL build will now warn at startup and refuse to create
45 new threads, unless futex support is detected in the kernel
46 * incompatible change: the top level REPL now has only an ABORT
47 restart associated with it, not TOPLEVEL and ABORT as it used to.
48 TOP and TOPLEVEL are now available as debugger commands for
49 returning to the top level.
50 * incompatible change: forms evaluated in the REPL now use the
51 global optimization policy.
52 * incompatible change: user- and system-initialization files are
53 no longer processed with LOAD, but by READ and EVAL; hence the
54 global optimization policy, startup package, readtable, etc,
56 * The .fasl file format number has been incremented because of
57 various incompatible changes.
58 * internal entry point details and argument counts no longer appear
59 in backtraces unless explicitly requested by setting
60 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
61 * built-in and standard functions no longer have names like "top
62 level local call to FOO".
63 * fixed bug 32: functions defined in non-null lexical environments
64 now have more legible printed representation
65 * fixed bug 33: functions defined in non-null lexical environemnts
66 are now more amenable to inspection by INSPECT.
67 * workaround for bug 354: XEPs no longer appear in backtraces unless
69 * fixed bug: receiving the signal which results from attempting to
70 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
71 SIGBUS on other *BSDs) on architectures where the C stack is also
72 the Lisp stack (x86 and x86-64) from foreign code no longer leads
73 to debugger confusion or wild instability. (reported by Cheuksan
75 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
76 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
77 (reported by Lutz Euler)
78 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
79 compiled code. (reported by Paul Dietz)
80 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
81 specialized parameter to a method to something that is not TYPEP
82 the specializer is now possible.
83 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
84 face of package deletion.
85 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
86 pathname. (reported by David Tolpin on c.l.l)
87 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
88 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
89 STRING-STREAM and FILE-STREAM, respectively.
90 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
91 than previously; in addition, its test suite is now run on build.
92 (thanks to Luke Gorrie)
93 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
94 * optimization: added a immediate representation for single-floats
96 * fixed some bugs revealed by Paul Dietz' test suite:
97 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
98 ** attempting to create a package with a colliding nickname causes
99 correctable errors to be signalled.
100 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
101 ** several x86-64 backend bugs related to sign-extension of immediate
104 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
105 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
106 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
108 * fixed loading of multiply forward-referenced layouts.
109 (thanks to Cheuksan Wang)
110 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
111 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
112 (see COMPILE-FILE documentation for details of :PRINT option)
113 * fixed bugs 19 and 317: fixed-format floating point printing is
114 more accurate. This also fixes a bug reported by Adam Warner
115 related to the ~@F format directive.
116 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
118 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
119 dispatch table if the from-char is a dispatch macro character.
120 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
121 by the wordsize no longer ignore the last word. (reported by Lutz
123 * fixed bug in type checking of dynamic-extent variables. (reported
125 * optimization: sequence traversal functions use their freedom to
126 coerce function designators to functions.
127 * optimization: code with many calls to CLOS methods specialized on
128 CLOS classes has had redundant type checks removed.
129 * optimization: added declarations to speed up operations that access
130 the internal character database (for example STRING-UPCASE)
131 * optimization: comparison operations between floats and sufficiently small
132 fixnums no longer create extra rationals
133 * fixed some bugs related to Unicode integration:
134 ** portions of multibyte characters at the end of buffers for
135 character-based file input are correctly transferred to the
136 start of the buffer at the next read.
137 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
138 passing it through to OPEN.
139 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
140 argument given to internal calls to OPEN.
141 ** the built-in comment readers (introduced by character sequences
142 ";" and "#|") are more forgiving to encoding errors; they will
143 STYLE-WARN and then attempt to resync the stream at a character
144 boundary. (thanks to Teemu Kalvas)
145 * fixed some bugs in the x86-64 port:
146 ** Negative short int return values from c-calls are sign-extended
148 ** The stack is aligned to 16-bytes for c-calls, as required by
149 the ABI. (thanks to Cheuksan Wang)
150 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
151 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
152 for enums. (thanks to Vincent Arkesteijn)
153 ** Multiple small optimizations and bugfixes for floating point
155 * fixed some bugs revealed by Paul Dietz' test suite:
156 ** Space, Tab, Linefeed, Return and Page have the invalid
157 secondary constituent character trait.
158 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
160 ** WITH-INPUT-FROM-STRING should only update the index place on
162 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
164 ** Bit-array operations (BIT-AND and similar) worked incorrectly
165 with one-dimensional arrays with fill pointers.
166 ** TYPE-OF failed on a complex with an integer realpart and a
168 ** compiler failure during type inference for the code of form
169 (IF (EQL X (THE ...)) ...) (MISC.535).
171 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
172 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
173 platform. The port supports 61-bit fixnums, large memory spaces
174 and reloading shared object files.
175 * enhancement: saving cores with foreign code loaded is now
176 supported on ppc/Darwin in addition to the previously supported
178 * enhancement: the statistical profiler now walks deeper into the
179 call stack for more meaningful call-graphs and accrued time
180 reports (x86/x86-64 only). It also now reports time spent in
182 * enhancement: it is now possible to trace most individual methods
183 of a generic function in addition to tracing the generic function
185 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
187 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
188 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
189 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
190 produces an error. (thanks to Vincent Arkesteijn)
191 * bug fix: NAMESTRING on pathnames with :WILD components in their
192 directories works correctly. (thanks to Artem V. Andreev)
193 * fixed bug 125: compiler preserves identity of closures. (reported
195 * bug fixed: functions with &REST arguments sometimes failed with
196 "Undefined function" when compiled with (DEBUG 3). (reported by
198 * bug fix: overflow during compiling of setting element of a bit
199 vector with constant index and value. (reported by Timmy Douglas)
200 * build fix: fixed the dependence on *LOAD-PATHNAME* and
201 *COMPILE-FILE-PATHNAME* being absolute pathnames.
202 * on x86 compiler partially supports stack allocation of dynamic-extent
204 * GO and RETURN-FROM do not check the extent of their exit points
205 when compiled with SAFETY 0.
206 * fixed some bugs related to Unicode integration:
207 ** encoding and decoding errors are now much more robustly
208 handled; it should now be possible to recover even from invalid
209 input or output to the terminal. (thanks to Teemu Kalvas)
210 ** provided a first cut at implementing STRING-TO-OCTETS and
211 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
212 ** altered the SB-MD5 contributed module slightly, changing the
213 interface just enough for it to be supportable for builds where
214 lisp characters are not eight bits.
215 * fixed some bugs revealed by Paul Dietz' test suite:
216 ** the FORMATTER-generated functions for ~V[ conditionals require
217 the correct number of arguments.
218 ** READ-FROM-STRING returns the mandated second value when applied
219 to displaced strings.
220 ** the #\Rubout and #\Backspace characters are treated as invalid
221 constituent characters by the tokenizer.
223 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
224 * new feature: reloading changed shared object files with
225 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
226 * new feature: references to foreign variables and functions
227 can now be compiled and loaded before the corresponding shared
228 object file is loaded, as long as the foreign definitions are
229 available at runtime.
230 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
231 supported. (thanks to Dan Debertin)
232 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
233 just keywords. (thanks to Vincent Arkesteijn)
234 * fixed bug #331: structure-class instances corresponding to
235 DEFSTRUCT forms are now created eagerly.
236 * fixed bug #345: backtraces from calls to undefined functions work
237 on x86 as well. Related bug #61 is now also partially fixed on x86
238 (backtraces from throws to unknown catch tags.)
239 * bug fix: lambda-list parsing is now stricter vrt. order and number
240 of lambda-list keywords.
241 * bug fix: as specified by AMOP, an error is signalled if a
242 class-option appears multiple times in a DEFCLASS form. (reported
244 * bug fix: RANDOM can be compiled when the compiler derives the type
245 of its numeric argument as a disjoint set of small integers.
246 (reported by Paul Dietz)
247 * bug fix: starting a core saved with shared objects loaded when
248 those objects are not available no longer causes threaded SBCL to
249 hang. (reported by Sean Ross)
250 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
252 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
253 argument, which must always be NIL. (reported by Kalle Niemitalo)
254 * bug fix: printing 1.0d+23 no longer results in an error.
255 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
256 * bug fix: structure slot setters preserve evaluation order. (thanks
258 * fixed some bugs related to Unicode integration:
259 ** RUN-PROGRAM can allow its child to take input from a Lisp
260 stream. (reported by Stefan Scholl)
261 ** ASDF-INSTALL successfully downloads .tar.gz files in all
262 locales. (reported by Ken Causey)
263 * fixed some bugs revealed by Paul Dietz' test suite:
264 ** INCF, DECF and REMF evaluate their place form as specified in
266 ** FORMATTER expands ~{ ~} iteration directives with V or #
267 parameters correctly.
268 ** FORMATTER deals with the ~@[ ~] conditional directive where the
269 consequent uses no arguments correctly.
270 ** the system has a partial understanding of the (COMPLEX RATIO)
272 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
275 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
276 * new feature: a build-time option (controlled by the :SB-UNICODE
277 keyword feature, enabled by default) for building the system with
278 support for the entire 21-bit character space defined by the
280 * new feature: the system now has rudimentary external-format
281 support; the primary user-visible change at this time is that
282 characters with the high bit set (such as lower-case-e-acute) will
283 print correctly to a terminal in a UTF-8 environment.
284 * minor incompatible change: BASE-CHAR no longer names a class;
285 however, CHARACTER continues to do so, as required by ANSI.
286 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
287 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
288 has been moved to the SB-EXT package (temporarily re-exported from
290 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
291 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
293 * fixed bug #351: better error-handlind and reporting for malformed
295 * fixed bug #350: bignum-printing is now more memory-efficient,
296 allowing printing of very large bignums, eg. (expt 2 10000000).
297 (reported by Bruno Haible)
298 * fixed bug #302: better primitive-type selection for intersection
300 * fixed bug #308: non-graphic characters now all have names, as
301 required. (reported by Bruno Haible)
302 * bug fix: redefining a class with different superclasses now correctly
303 removes it from the direct-subclasses of its previous superclasses.
304 (reported by David Morse)
305 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
306 new value now works. (reported by Bruno Haible)
307 * bug fix: correct canonicalization of multiple non-standard slot
308 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
309 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
310 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
311 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
312 now exists, an signals an error.
313 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
314 during macroexpansion for non-iteration variables as well. (reported
315 by Bruno Haible for CMUCL)
316 * bug fix: Cyclic structures and unprintable objects in compiler
317 messages no longer cause errors. (reported by Bruno Haible)
318 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
319 and READ-FROM-STRING all now return a primary value of NIL if
320 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
321 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
322 (reported by Bruno Haible for CMUCL)
323 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
324 do not designate a condition. (reported by Bruno Haible for
326 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
327 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
328 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
329 permitting resolution in favour of any of the conflicting symbols.
330 (reported by Bruno Haible for CMUCL)
331 * bug fix: EQUAL compiler optimizations is less aggressive on
332 strings which can potentially compare true despite having distinct
333 specialized array element types.
334 * bug fix: unit enumerations can be defined without dividing by
335 zero. (thanks to Vincent Arkesteijn)
336 * FORMAT compile-time argument count checking has been enhanced.
337 (report from Bruno Haible for CMUCL)
338 * a partial workaround for the bug 262: the compiler does not try to
339 inline-expand a local function doing RETURN-FROM from a deleted
340 BLOCK. (thanks to Peter Denno for the bug report and to David
341 Wragg for the simple test case)
342 * fixed some bugs revealed by Paul Dietz' test suite:
343 ** RENAME-PACKAGE allows all package designators as new package
345 ** constraint propagation and lambda variable substitution are
346 more cautious in dealing with partially deleted code.
347 ** compiler sometimes lost reoptimization passes.
348 ** CERROR, given a condition as condition designator, passes its
349 remaining arguments to the continue format control without
351 ** Case-altering FORMAT directives work correctly on non-ASCII
353 ** The REAL type specifier handles bounds outside the floating
354 point ranges without signalling FLOATING-POINT-OVERFLOW.
355 ** Functions with IR1-transformations can create intercomponent
356 references to global functions.
357 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
359 ** FORMAT ~R treats a nil value for its first parameter correctly.
361 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
362 * enhancement: saving cores with foreign code loaded is now
363 supported on x86/NetBSD and sparc/Linux in addition to the previously
365 * bug fix: on some platforms repeated installations caused multiple
366 copies of HTML documentation to be installed -- should not happen
367 any more. (reported by Stefan Scholl)
368 * bug fix: parsing self-recursive alien record types multiple times
369 no longer causes infinite recursion. (reported by Thomas F. Burdick,
370 original patch by Helmut Eller for CMUCL)
371 * bug fix: stack-exhaustion detection works now on NetBSD as well.
372 (thanks to Richard Kreuter)
373 * bug fix: defining classes whose accessors are methods on existing
374 generic functions in other (locked) packages no longer signals
375 bogus package lock violations. (reported by François-René Rideau)
376 * bug fix: special variables as DEFMETHOD parameters no longer have
377 associated bogus type declarations. (reported by David Wragg and
379 * bug fix: read-write consistency on streams of element-type
380 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
381 * bug fix: redefiniton of the only method of a generic function with
382 no DEFGENERIC no longer emits a full WARNING. In addition,
383 redefinition of generic functions with no DEFGENERIC to an
384 incompatible lambda list now signals an error. (thanks to Zach
386 * bug fix: DEFGENERIC now works even when there's a function of the
387 same name in an enclosing lexical environment. (thanks to Zach
389 * fixed compiler failure, caused by instrumenting code during
390 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
391 * optimization: added loop analysis and improved register allocation
392 * fixed some bugs revealed by Paul Dietz' test suite:
393 ** POSITION on displaced vectors with non-zero displacement
394 returns the right answer.
395 ** (SIMPLE-STRING) is a valid type specifier for sequence
397 ** *PRINT-LEVEL* handling for slotless structures is pedantically
399 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
400 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
402 ** The justification version of the FORMAT ~< directive treats
403 non-zero minpad parameter correctly.
405 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
406 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
407 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
408 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
409 the supported interface.
410 * new feature: Single-stepping of code compiled with DEBUG 2 or
411 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
412 * new feature: saving cores with foreign code loaded is now
413 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
414 Timothy Moore's work for CMUCL)
415 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
416 parameters to * instead of NIL if no initform is supplied.
417 (reported by Johan Bockgaard)
418 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
419 correctly when FUNCALL appears as the car of the form. Note:
420 despite this FUNCALL forms are not currently subject to
421 compiler-macro expansion. (port of Raymond Toy's fix for the
422 same from CMUCL, reported by Johan Bockgaard)
423 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
424 (thanks for Teemu Kalvas)
425 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
426 case instead of terminating the iteration (thanks for Julian
427 Squires, Sean Champ and Raymond Toy)
428 * bug fix: incorrect expansion of defgeneric that caused a style
429 warning. (thanks for Zach Beane)
430 * bug fix: slot accessor effective method computation works properly
431 for classes with multiple non-standard applicable methods on
432 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
433 * on x86 compiler supports stack allocation of results of LIST and
434 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
435 CMUCL implementation by Gerd Moellmann)
436 * fixed some bugs revealed by Paul Dietz' test suite:
437 ** FORMAT strings with both the ~<~:;~> form of the justification
438 directive and pretty-printing directives cause an error.
440 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
441 * incompatible change: the internal functions
442 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
443 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
444 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
445 instead of the old functions.
446 * new feature: on platforms where "dladdr" is available foreign
447 function names now appear in backtraces. (based on Helmut Eller's
449 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
450 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
452 * documentation: ASDF manual is now distributed with SBCL.
453 * bug fix: SBCL can now load its contributed modules with REQUIRE
454 even if the system-provided entries have been removed from
455 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
457 * bug fix: backtraces involving undefined functions or assembly
458 routines are more informative. (thanks to Brian Downing)
459 * bug fix: mutually referent alien structures now work correctly.
460 (reported by Rick Taube)
461 * bug fix: structures defined by WITH-ALIEN can be referred to
462 within other definitions in the same WITH-ALIEN.
463 * bug fix: division operators (MOD, TRUNCATE and the like) with
464 constant zero divisors and integer dividends no longer generate
466 * bug fix: provide default methods for INPUT-STREAM-P and
467 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
468 * bug fix: improve the detection and resolution of MOP metacycles
469 (where effective method computation depends on the generic function
470 having its effective method computed). (reported by Bruno Haible)
471 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
472 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
473 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
474 * bug fix: pathnames with relative directory components can be
475 represented relative to default pathnames.
476 * optimization: in taking the GCD of bignums, reduce the two bignums
477 to approximately the same size (using Euclid's algorithm) before
478 applying the more sophisticated binary GCD. (thanks to Juho
480 * optimization: COUNT on bitvectors now operates word-at-a-time.
481 * optimization: ASH with a positive, but not necessarily constant,
482 (leftwards) shift, when in a modular context, is compiled to a
484 * fixed some bugs revealed by Paul Dietz' test suite:
485 ** FORMAT variable parameters ("~V<char>") are defaulted properly
486 if the corresponding argument is NIL.
487 ** FORMAT directives accepting a minpad parameter treat negative
489 ** literal commas as character parameters to FORMAT directives are
491 ** literal spaces directly after ~<Newline> directives within a
492 format-logical-block (~:< ~@:>) do not induce :FILL-style
493 conditional newlines.
494 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
495 as specified: it no longer includes conditional newlines).
496 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
498 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
499 :PER-LINE-PREFIX argument does not evaluate to a string.
501 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
502 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
503 the manual for details; for now, package locks can be disabled by
504 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
505 if no major problems are found then it is likely that they will be
506 compiled in unconditionally.
507 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
508 unsupported operators on all platforms. To load a shared library
509 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
510 object file, link it into a shared library outside of SBCL and
511 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
513 * bug workaround: ROOM T and the GC were not working together
514 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
515 reporting facility aren't preserved. That reporting has been
516 disabled, so now until and unless someone figures out how to make it
517 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
518 * minor incompatible change: as threatened around sbcl-0.8.0, the
519 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
520 The symbols are also exported from SB-PCL for backwards
521 compatibility, but more so than before SB-PCL should be treated as
522 an implementation-internal package.
523 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
525 * the SB-SPROF contrib now works on (most) non-x86 architectures.
526 It is known as of this release not to work on the Alpha, however.
527 * fixed bug #167: errors signalled due to illegal syntax in method
528 bodies are now more legible.
529 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
530 designators and can hence be used with TYPEP.
531 * fixed bug #333: CHECK-TYPE now ensures that the type error
532 signalled, if any, has the right object to be accessed by
533 TYPE-ERROR-DATUM. (reported by Tony Martinez)
534 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
535 5.1.2.3 for multiple-value place subforms. (reported by Kalle
537 * fixed bug #334: programmatic addition of slots using specialized
538 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
539 and :ALLOCATION :CLASS slots.
540 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
541 float exponents. (rereported by Peter Seibel)
542 * fixed a bug: #\Space (and other whitespace characters) are no
543 longer considered to be macro characters in standard syntax by
545 * fixed bug: initialization of condition class metaobjects no longer
546 causes an instance of the condition to be created. (reported by
548 * fixed bug: it is now possible to have slots such that
549 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
550 description is neither :INSTANCE nor :CLASS.
551 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
552 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
553 SLOT-VALUE-USING-CLASS), and no longer causes errors with
554 non-standard SLOT-DEFINITION-ALLOCATION values.
555 * fixed bugs: various race conditions handling exiting threads.
556 CL-PPCRE's thread torture test now passes.
557 * fixed arguably-a-bug: GC time proportional to number of threads in
558 system even when most of them are idle
559 * optimization: improved performance of BIT and SBIT on bit-vectors.
560 * .fasl file incompatibility: The fasl file version number has
561 been incremented because of changes associated with package locks.
563 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
564 * minor incompatible change: the system no longer provides
565 optimization hints (conditions which are TYPEP
566 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
567 mode; these hints are still emitted when higher SPEED optimization
569 * new contrib module: a sampling profiler (profiling by statistical
570 sampling, rather than by instrumenting functions) is available as
571 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
572 * the behaviour of the standard function ED is now customizeable by
573 third parties through a hook variable: see ED's documentation
574 string for information on the protocol.
575 * the compiler no longer emits efficiency notes for (FUNCALL X)
576 when the type of X is uncertain under default optimization
578 * fixed bug 276: mutating a binding of a specialized parameter to a
579 method to something that is not TYPEP the specializer is now
581 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
582 exhibit the required behaviour on the x86 platform. (thanks to
583 Peter van Eynde, Eric Marsden and Bruno Haible)
584 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
585 even for difficult arguments. (reported by Peter Graves)
586 * fixed bug 141a: the backquote printer now descends quoted
588 * fixed another bug in backquote printing: no more destructive
589 modification of the form's list structure. (reported by Brian
591 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
592 move between its address being taken and the call to
593 interrupt_thread, fixing a crashing race condition.
594 * the SB-POSIX contrib implementation has been adjusted so that it
595 no longer exhibits ridiculously poor performance when constructing
596 instances corresponding to C structs.
598 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
599 * minor incompatible change: the sb-grovel contrib now treats C
600 structures as alien (in the sense of SB-ALIEN) objects rather than
601 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
602 has implications for memory management of client code
603 (sb-grovel-returned objects must now be manually managed) and for
604 type safety (alien objects now have full types).
605 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
606 used to control emission of compiler diagnostics, rather than the
607 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
608 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
609 quality should be considered deprecated.
610 * install.sh now installs the user manual as well
611 * (not quite a new documentable feature, but worth considering in
612 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
613 beginnings of a semantically meaningful condition hierarchy is
614 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
616 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
617 designator as the defaults argument.
618 * fixed bug: Displaced arrays whose displaced-to array has become
619 too small now cause ARRAY-DIMENSION to signal an error, providing
620 for safer bounds-checking. (reported by Bruno Haible)
621 * fixed bug: DEFCLASS slot definitions with identical :READER and
622 :WRITER names now signal a reasonable error. (reported by Thomas
624 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
626 * fixed bug: Invalid slot specification errors now print correctly.
627 (thanks to Zach Beane)
628 * fixed bug 320: Shared to local slot value transfers in class
629 redefinitions now happen corrently from superclasses as
630 well. (reported by Bruno Haible)
631 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
633 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
634 improper lists correctly. (reported by Bruno Haible)
635 * fixed bug 313: source-transform for <fun-name> was erroneously
636 applied to a call of a value of a variable with name <fun-name>.
637 (reported by Antonio Menezes Leitao)
638 * fixed bug 307: The obsolete instance protocol ensures that
639 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
640 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
641 remove dead unknown-values globs from the middle of the stack.
642 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
643 easier to resume long computations after using *BREAK-ON-SIGNALS*
644 to diagnose and fix failures. (thanks to Nikodemus Siivola)
645 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
646 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
647 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
648 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
649 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
651 * fixed a (fairly theoretical) bug in string printing: if
652 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
653 does not have array-element-type equal to the most general string
655 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
656 function name. (thanks to Nikodemus Siivola)
657 * fixed bug: compile-time format string checker failed on
658 non-closed ~{. (reported by Thomas F Burdick)
659 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
660 don't warn on legal loop code involving more than one aggregate
661 boolean. (thanks to Nikodemus Siivola)
662 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
663 in keyword position to MAKE-PACKAGE was not being reported as
665 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
666 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
668 * fixed bugs 280 and 312: the checking for multiple definitions in a
669 file is less likely to become confused by uses of inline
671 * fixed bug: the #S reader macro performs the keyword coercion
672 specified for slot names. (reported by Kalle Niemitalo)
673 * fixed bug: lambda lists may contain symbols whose names start with
674 & but are not lambda-list-keywords; their occurrence triggers a
676 * fixed bug 321: define-method-combination argument lambda lists do
677 not cause invalid code to be generated when &optional or &aux
678 variables have default values. (reported by Bruno Haible)
679 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
680 have CLOS classes; this appears also to have fixed reported
681 instability in stack exhaustion detection.
682 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
683 MUFFLE-WARNING when no associated restart is present is now
685 * optimization: rearranged the expansion of various defining macros
686 so that each expands into only one top-level form in a
687 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
689 * optimization: used a previously little-used slot in symbols to
690 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
692 * fixed some bugs revealed by Paul Dietz' test suite:
693 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
695 ** Fixed an optimization bug related to inheritance of initforms
696 from local to shared slots.
697 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
698 ** CAST optimizer forgot to flush argument derived type.
699 ** print/read consistency on floats is now orders of magnitude
700 more likely. (thanks also to Bruno Haible for a similar report
702 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
703 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
704 for objects of type REAL. Make it so.
705 ** SXHASH is specified (infelicitously) to respect similarity,
706 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
707 it so. (thanks to Markus Ziegler)
708 ** on the Alpha, the compiler succeeds in compiling functions
709 returning a known number of arguments greater than 63.
710 ** fixed handling of invalid NIL arguments in keyword position
712 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
714 ** provided a readably-printable representation for RANDOM-STATE
716 ** ensured that pathnames, where they have a namestring, always
717 print using #P"..." syntax.
719 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
720 * Support for the forthcoming 2.0 version of the NetBSD kernel
721 running on x86 hardware has been added. (thanks to Perry
722 E. Metzger most immediately, and others for their past work)
723 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
724 current release version; SBCL's OpenBSD support had been broken
725 since about the time of OpenBSD's switch to ELF binary format.)
726 * [placeholder for DX summary]
727 ** user code with &REST lists declared dynamic-extent, under high
728 speed or space and low safety and debug optimization policy.
729 * The manual has been converted to Texinfo format and the debugger
730 chapter from the cmucl manual has been added.
731 * A facility has been added to extract documentation strings from
732 sbcl and store them as Texinfo-formatted snippets for inclusion in
733 the manual (via Texinfo's @include directive)
734 * bug fix: compiler emitted division in optimized DEREF. (thanks for
735 the test case to Dave Roberts)
736 * bug fix: multidimensional simple arrays loaded from FASLs had fill
737 pointers. (reported by Sean Ross)
738 * bug fix: PROFILE output is printed nicely even for large numerical
739 values. (thanks to Zach Beane)
740 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
741 greater than 32 handle EOF correctly.
742 * bug fix: on X86 an immediate argument of the IMUL instruction is
743 correctly printed in disassembly. (thanks to Lutz Euler)
744 * bug fix: class slots in redefined classes preserve their old
745 values. (thanks to Bruno Haible and Nikodemus Siivola)
746 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
747 succeeds. (reported by Marco Baringer)
748 * fixed some bugs revealed by Paul Dietz' test suite:
749 ** READ-SEQUENCE now works on ECHO-STREAMs.
750 ** RATIONALIZE works more according to its specification. (thanks
753 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
754 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
755 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
756 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
757 should matter to you only if you rebind the printer control
758 variables and then find you want different bindings in the
759 debugger than in the ordinary execution of your program.)
760 * The runtime build system has been tweaked to support building
761 (on SPARC/SunOS) using a C compiler which invokes Sun's own
762 assembler and linker. (thanks to Nikodemus Siivola)
763 * Unbound, undefined, undeclared variables now trigger full
764 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
765 more often programmer error than deliberate exploitation of undefined
767 * optimization: the hash algorithm for strings has changed to one
768 that is less vulnerable to spurious collisions. (thanks to Juho
770 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
771 needless bounds checking. (thanks to Juho Snellman)
772 * optimization: implemented multiplication as a modular
773 (UNSIGNED-BYTE 32) operation on the PPC backend.
774 * fixed some bugs revealed by Paul Dietz' test suite:
775 ** ADJUST-ARRAY now copies the datum in a zero rank array if
777 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
778 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
779 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
781 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
783 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
785 ** ECHO-STREAMs no longer attempt to echo the end of file value to
786 their output stream on EOF from read.
787 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
788 have been read to end-of-file.
789 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
791 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
792 description of determination of which consecutive characters
794 ** Printing the "Space" character with escaping on now yields "#\\ ",
795 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
796 ** Reading floating-point numbers with *READ-BASE* set to a number
797 less than 10 works correctly.
798 ** Reading floating-point numbers with *READ-BASE* set to a number
799 more than 10 works correctly.
800 ** Printing with *PRINT-READABLY* targets the standard readtable, not
801 the readtable currently in effect.
803 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
804 * minor incompatible change: parsing of namestrings on a physical
805 (Unix) host has changed; numbers after the final #\. in a
806 namestring are no longer interpreted as a version field. This is
807 intented to be largely invisible to the user, except that the
808 meaning of the namestring "*.*.*" has changed: it now refers to a
809 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
810 should usually be replaced by
811 (make-pathname :name :wild :type :wild :version :wild)
812 with the added benefit that this is more likely to be portable.
813 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
814 option to OPEN now signals an error if the file being opened
815 exists; this may have an impact on existing code.
816 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
817 signals received, on the PowerPC platforms (both Linux and
818 Darwin). (thanks to Pierre Mai for pointing out the location of
820 * several fixes on OS X: The system now builds and runs cleanly on
821 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
822 (thanks to Brian Mastenbrook)
823 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
824 second-resolution: integer multiples of 1/3600 between -24 and 24.
825 (thanks to Vincent Arkesteijn)
826 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
827 type when called with 1 argument; PEEK-CHAR checked type of
828 PEEK-TYPE only after having read first character from a
829 stream. (reported by Peter Graves)
830 * bug fix: the garbage collector now has much better locality
831 behaviour, and in particular no longer treats all memory as being
832 exhausted when many small objects point to each other in a deeply
834 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
835 recognized as being TYPEP their class.
836 * bug fix: the PUSHNEW documentation string has been corrected.
837 (thanks to Vincent Arkesteijn)
838 * bug fix: defaulting of the value for the last of an atypically
839 large number of multiple values being bound was not being
840 performed correctly on the Alpha or PPC platforms
841 * optimization: implemented multiplication as a modular
842 (UNSIGNED-BYTE 32) operation on the x86 backend.
843 * optimization: SEARCH on simple-base-strings can now be open-coded.
844 (see also contrib/compiler-extras.lisp for inspiration for
845 teaching the compiler about the Boyer-Moore algorithm).
846 * value, returned by MAX (and MIN) called with several EQUALP, but
847 not EQL, arguments now does not depend on compiler settings.
848 * fixed some bugs revealed by Paul Dietz' test suite:
849 ** in stack analysis liveness information is propagated from
850 non-local entry points.
851 ** pathwise CAST removing failed when the CAST node did not start
853 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
854 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
856 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
857 host is already defined.
858 ** RENAME-FILE works on streams instead of signalling an internal
860 ** PEEK-CHAR uses the current readtable when determining whether
861 or not a character is whitespace.
862 ** MERGE-PATHNAMES handles the case when the pathname does not
863 specify a name while the default-pathname specifies a version.
864 ** Pathnames now stand a better chance of respecting print/read
866 ** Attempting to use standardized file system operators with a
867 pathname with invalid :DIRECTORY components signals a
869 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
871 ** DIRECTORY on logical pathnames is more correct.
872 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
873 signal a TYPE-ERROR if their argument is not a stream.
874 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
875 designator argument does not designate a stream.
876 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
877 examining the synonym.
878 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
880 ** OPEN and WITH-OPEN-STREAM allow opening streams with
881 element-type larger than ([UN]SIGNED-BYTE 32).
883 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
884 * When built with the :SB-FUTEX feature, threaded builds now take
885 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
886 for faster/more reliable mutex and condition variable support.
887 * Incompatible change (but one you probably shouldn't have been using
888 anyway): the interface and code for arbitrating between multiple
889 threads in the same user session has been redesigned.
890 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
891 error when called without an explicit environment argument.
892 (thanks to Nikodemus Siivola)
893 * bug fix: buffered :DIRECTION :IO streams are less likely to become
894 confused about their position. (thanks to Adam Warner and Gerd
896 * bug fix: Pretty printing backquoted forms with unquotations in the
897 argument list position of various code constructs such as LAMBDA
898 now works correctly. (reported by Paul Dietz)
899 * bug fix: Pretty printing unquotations no longer loses all
900 stream position information.
901 * optimization: performance of string output streams is now less
902 poor for multiple small sequence writes.
903 * optimization: performance of CSUBTYPEP in the presence of complex
904 expressions involving CONS and NOT many times has been improved.
905 (reported by Paul Dietz)
906 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
908 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
909 streams for the REPL, for the debugger, and so on. (thanks to
911 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
912 * fixed some bugs revealed by Paul Dietz' test suite:
913 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
914 is ignored if it is too small, rather than propagating through
915 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
916 ** extremely complex negations of CONS types were not being
917 sufficiently canonicalized, leading to inconsistencies in
919 ** VALUES tranformer lost derived type.
921 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
922 * fixed a bootstrapping bug: the build process no longer assumes
923 that the various BOOLE-related constants have the same value in
924 host and target lisps. (noted by Paul Dietz' test suite on an
925 SBCL binary built from CLISP)
926 * The system can now be dynamically linked on the MIPS platform,
927 which enables dynamic loading of foreign code from Lisp. (thanks
928 to Ralf Baechle for discussions on the MIPS ABI)
929 * The system now records debugging information for its own source
930 files in a filesystem-position-independent manner, relative to
931 the "SYS" logical host.
932 * fixed a compiler bug: MV-LET convertion did not check references
933 to the "max args" entry point. (reported by Brian Downing)
934 * tweaked disassembly notes to be less confident about proclaiming
935 some instruction as an LRA. (thanks to Brian Downing)
936 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
937 now each have their own history, command character, and other
938 characteristics. (thanks to David Lichteblau)
939 * fixed some bugs revealed by Paul Dietz' test suite:
940 ** compiler failure in compiling LOGAND expressions including a
942 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
943 shift greater than 32.
944 ** FLUSH-DEST did not mark blocks for type check regeneration.
945 ** HANDLER-CASE failed to accept declarations in handler clauses
946 in some circumstances.
948 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
949 * New code in contrib/sb-introspect (still probably not entirely
950 stable yet) provides some support for smart Lisp development
951 environments like SLIME.
952 * The conditions signalled for errors occurring when loading .fasl
953 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
954 in a way which should help ASDF recover gracefully.
955 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
956 stuff has been cleaned up. If you code contrib/ stuff, this might
957 affect you, and you can look at contrib/README, contrib/STANDARDS,
958 and/or the 0.8.4.27 diff to check.
959 * In full calls the compiler now does not generate checks for declared
960 argument types for all arguments.
961 * various threading fixes
962 ** and some experimental patches which didn't make it into
963 the main tree for this release, but which are shipped in
964 contrib/experimental-thread.patch as a possible fix for some
965 failures (deadlock, spinning...) in GC-intensive multithreaded
967 * fixed PPC build problem (source code incompatibility of different
968 library versions): added offsetof() hackery which attempts to divine
969 where glibc maintainers put uc_mcontext today
970 * fixed bug 282: compiler does not trust type assertions while passing
971 arguments to a full call.
972 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
973 &OPTIONAL VALUES type parameter.
974 * fix bug 214: algorithm for noting rejected templates is now more
975 similar to that of template seletion. (also reported by rydis on
977 * fixed bug 141b: printing backquoted information readably and prettily
978 inserts a space where necessary.
979 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
980 (CHARACTER 10) are now reported as errors, rather than propagated
981 as unknown types. (reported by piso on #lisp)
982 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
983 with values NIL and :ERROR. (thanks to Milan Zamazal)
984 * fixed bug 191c: CLOS now does proper keyword argument checking as
985 described in CLHS 7.6.5 and 7.6.5.1.
986 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
987 longer raise an error; further, using a list as a for-as-arithmetic
988 counter now raises a meaningful error.
989 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
990 now understood by sequence creation functions such as MAKE-SEQUENCE
992 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
993 a STRING-INPUT-STREAM.
994 * compiler enhancement: SIGNUM is now better able to derive the type
996 * type declarations inside WITH-SLOTS are checked. (reported by
998 * fixed some bugs revealed by Paul Dietz' test suite:
999 ** incorrect optimization of TRUNCATE for a positive first
1000 argument and negative second.
1001 ** compiler failure in let-convertion during flushing dead code.
1002 ** compiler failure while deriving type of TRUNCATE on an
1003 interval, containing 0.
1004 ** ASH of a negative bignum by a negative bignum count now returns
1006 ** intersection of CONS types now canonicalizes properly, fixing
1007 inconsistencies in SUBTYPEP.
1009 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1010 * incompatible change: The --disable-debugger command line
1011 option now clobbers the debugger at a more fundamental
1012 level, by redefining #'INVOKE-DEBUGGER instead of by
1013 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1014 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1015 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1016 enter the debugger REPL and then suffer recursive errors
1017 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1018 while under the new system, BREAK in --disable-debugger mode
1019 terminates the system just as an unhandled error would.
1020 * fixed compiler performance when processing loops with a step >1;
1021 * bug fix: DOCUMENTATION now retrieves generic function
1022 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1023 support has been systematized, and now supports the methods
1024 specified by ANSI, along with a default method and a method for
1025 slot documentation. (reported by Nathan Froyd)
1026 * bug fix: effective methods associated with a generic function are
1027 no longer cached over a change of that generic function's method
1028 combination. (reported by Andreas Fuchs)
1029 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1030 names a non-existent directory. (thanks to Andreas Fuchs)
1031 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1032 the PPC platform, lead to stack corruption; this has been fixed.
1033 (reported by Rainer Joswig)
1034 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1035 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1036 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1037 arithmetic in general, is now much more reliable on the PPC
1039 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1040 platform now returns the right answer.
1041 * optimization: restored some effective method precomputation in
1042 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1043 precomputation is now tunable.
1044 * optimization: compiler-internal data structure use has been
1045 reviewed, and changes have been made that should improve the
1046 performance of the compiler by about 20%.
1047 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1048 simple-base-strings and simple-bit-vectors is improved.
1049 * optimization: the optimization of 32-bit logical and arithmetic
1050 functions introduced in version 0.8.3 on the x86 has been
1051 implemented on the mips, ppc and sparc platforms; an
1052 implementation of the same facility, but for 64-bit arithmetic,
1053 has been added for the alpha.
1054 * microoptimization: the compiler is better able to make use of the
1055 x86 LEA instruction for multiplication by constants.
1056 * bug fix: in some situations compiler did not report usage of
1057 generic arithmetic in (SPEED 3) policy.
1058 * bug 145b fix: compiler used wrong type specifier while converting
1059 MEMBER-types to numeric.
1060 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1062 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1063 index argument now works properly on the Alpha platform.
1064 * bug fix: floating point exception treatment on the Alpha platform
1066 * bug fix: FILE-POSITION works much better on string input and
1067 output streams. (thanks to Nikodemus Siivola)
1068 * bug fix: many threading/garbage collection symptoms sorted.
1069 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1070 might be pseudo-atomic.
1071 * internal change: Stopping for GC is now done with signals not
1072 ptrace. GC is now done in whichever thread wanted it, instead of
1074 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1076 * bug fix: result form in DO is not contained in the implicit
1078 * incompatible change: ICR structure is changed; the value part of
1079 CONTINUATION is now called LVAR; corresponding functions are
1080 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1081 * added type deriver for ISQRT (thanks to Robert E. Brown).
1082 * bug fix: better support for loading from the command line when an
1083 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1085 * fixed some bugs revealed by Paul Dietz' test suite:
1086 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1087 ** ROUND and FROUND now give the right answer when given very
1088 small float arguments.
1089 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1091 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1092 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1093 ** LCM should return a non-negative integer.
1094 ** PARSE-INTEGER returned the index of a terminator instead of the
1095 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1096 ** PARSE-INTEGER returned an incorrect index being applied to a
1098 ** LCM with two arguments of 0 returns 0 rather than signalling
1100 ** unsigned addition of a 32-bit constant with the high bit set no
1101 longer causes an internal compiler error on the x86.
1102 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1103 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1104 with negative last argument.
1105 ** byte specifiers with zero size and position no longer cause
1106 an error during type derivation.
1107 ** bignum multiplication on the Alpha platform now returns the
1109 * porting: The system now builds on SuSE AMD64, although it still
1110 generates a 32-bit binary.
1111 * .fasl file incompatibility: The fasl file version number has
1112 been incremented (because of the changes to internal compiler
1113 data structures referred to above).
1115 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
1116 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
1117 more accurately, on the Darwin kernel running on PowerPC hardware.
1118 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
1119 * Compiler code deletion notes now signal a condition of type
1120 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
1121 an associated MUFFLE-WARNING restart.
1122 * The compiler now performs limited argument count validation of
1123 constant format strings in FORMAT, and where appropriate in ERROR,
1124 CERROR and WARN. (thanks to Gerd Moellmann)
1125 * New ASDF-INSTALL contrib can be used for automatic download and
1126 installation of third-party Lisp code from CCLAN or other sites
1128 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
1129 which forces another thread to execute a function supplied by the
1131 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
1132 now accept and act upon their :ELEMENT-TYPE keyword argument.
1133 (reported by Martin Atzmueller, Edi Weitz)
1134 * bug fix: FILE-POSITION now accepts position designators up to
1135 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
1136 is the greater. (thanks to Patrik Nordebo)
1137 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
1138 Kalle Olavi Niemitalo)
1139 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
1140 printable. (reported by Eric Marsden)
1141 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
1142 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
1143 * x86 bug fix in control stack exhaustion checking: now shows backtrace
1144 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
1145 (thanks to Stig Sandoe)
1146 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
1147 UNREAD-CHAR now correctly includes the unread character in the
1148 target sequence. (thanks to Gerd Moellmann)
1149 * bug fix in threaded builds: the system can now be suspended and
1150 resumed by shell job control with minimal disruption.
1151 * bug fixes in times and timezones >2038AD
1152 * better handling of "where is GNU make?" problem in build scripts
1153 (thanks to Nikodemus Siivola)
1154 * new optimization: inside a named function any reference to a
1155 function with the same name is considered to be a self-reference;
1156 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
1157 optimization quality.
1158 * new optimization on x86: logical functions and + now have
1159 optimized (UNSIGNED-BYTE 32) versions, which are automatically
1160 used when the result is truncated to 32 bits.
1161 * VALUES declaration is partially enabled.
1162 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
1163 * fixed some bugs revealed by Paul Dietz' test suite:
1164 ** The system now obeys the constraint imposed by
1165 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
1166 types form a lattice under type intersection.
1167 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
1168 ** ASSOC now ignores NIL elements in an alist.
1169 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
1170 and (1+ MOST-POSITIVE-FIXNUM) answers.
1171 ** The addition of a method with invalid qualifiers to a generic
1172 function does not cause an error to be signalled immediately;
1173 a warning is signalled, and the error is generated only on
1174 calling the generic function.
1175 * changed .fasl file version number, in part to add type codes for
1176 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
1177 obscure ANSI requirements
1179 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
1180 * fixed bug 148: failure to inline-expand a local function left
1181 garbage, confusing the compiler.
1182 * fixed bugs 3cd: structure slot readers perform type check if the
1183 slot can have an invalid value (i.e. it is either not initialized
1184 or can be written with a less specific slot writer).
1185 * bug fix: the compiler now traps array references to elements off
1186 the end of an array; previously, the bounds checking in some
1187 circumstances could go off-by-one.
1188 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
1190 * type declarations for array element types now obey the description
1191 on the CLHS page "Declaration TYPE", as per discussions on
1192 sbcl-help around 2003-05-08. This means that a declaration
1193 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
1194 declaration, all references to BAR will be asserted or assumed
1195 (with THE, so dependent on compiler policy) to involve objects of
1196 type FOO. Note that no such declaration is implied in
1197 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
1198 * declared types of functions from the "Conditions"
1199 chapter. (reported by Paul Dietz)
1200 * bug fix: CERROR accepts a function as its first argument.
1201 * bug fix: NTH an NTHCDR accept a bignum as index
1202 arguments. (reported by Adam Warner)
1203 * optimization: character compare routines now optimize comparing
1204 against a constant character. (reported by Gilbert Baumann)
1205 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
1206 argument now works properly on the MIPS platform.
1207 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
1208 * repeated evaluation of the same DEFSTRUCT, a slot of which is
1209 declared to have a functional type, does not cause an error
1211 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
1212 many :DEFAULT-INITARGS. (reported by Istvan Marko)
1213 * fixed bug: if last continuation of a deleted block has a
1214 destination, this destination should be deleted too. (reported by
1216 * fixed a bug in the bootstrap process: the host compiler's values
1217 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
1218 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
1219 test case from Patrik Nordebo)
1220 * improved the ability of the disassembler on the PPC platform to
1221 provide helpful disassembly notes.
1222 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
1223 the class in more cases than previously.
1224 * bug fix: FILE-POSITION now understands :START and :END for
1225 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
1226 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
1227 8) data. (thanks to David Lichteblau)
1228 * bug fix: it is possible to add a method to a generic function
1229 without lambda list.
1230 * bug fix: reader failed to signal END-OF-FILE inside an
1231 object representation. (reported by Nikodemus Siivola)
1232 * fixed some bugs revealed by Paul Dietz' test suite:
1233 ** LAST and [N]BUTLAST should accept a bignum.
1234 ** condition slot accessors are methods.
1235 ** (VECTOR NIL) is a subtype of STRING.
1237 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
1238 * minor incompatible change: some nonsensical specialized lambda
1239 lists (used in DEFMETHOD) which were previously ignored now signal
1241 * minor incompatible change: the system is now aware of the types of
1242 variables in the COMMON-LISP package, and will signal errors for
1243 most violations of these type constraints (where previously they
1244 were silently accepted).
1245 * minor incompatible change: COMPILE-FILE now uses the freedom
1246 afforded (ANSI 3.2.2.3) to use derived function types for
1247 functions defined in the same file. This also permits the system
1248 to warn on static type mismatches and function
1249 redefinition. (Currently it does not work with high DEBUG level.)
1250 * minor incompatible change: VALUES declaration is disabled.
1251 * When issuing notes, the compiler now signals a condition of type
1252 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
1253 restart for use in user handlers. It is expected that the
1254 COMPILER-NOTE condition will eventually become a condition
1255 supertype to a hierarchy of note types, which will then be
1256 handleable in a similar fashion. However, at the moment, no such
1257 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
1258 but it's an implementation detail, not a classification for the
1260 * Changes in type checking closed the following bugs:
1261 ** type checking of unused values (192b, 194d, 203);
1262 ** template selection based on unsafe type assertions (192c, 236);
1263 ** type checking in branches (194bc).
1264 * A short form of VALUES type specifier has ANSI meaning (it has
1265 increased the number of situations when SBCL cannot perform type
1267 * fixed bug in DEFSTRUCT: once again, naming structure slots with
1268 keywords or constants is permissible.
1269 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
1270 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
1271 classes. (thanks to Antonio Martinez)
1272 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
1273 outputs FRESH-LINE or TERPRI, and no longer converts its stream
1274 argument to a pretty-print stream. Instead, it leaves any such
1275 operations to DESCRIBE-OBJECT methods.
1276 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
1278 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
1279 lambda lists. (thanks to David Lichteblau)
1280 * bug fix: Defining a generic function with a :METHOD-CLASS being a
1281 subclass of STANDARD-METHOD no longer causes stack exhaustion.
1282 (thanks to Gerd Moellmann)
1283 * fixed bug 246: increased compilation speed of long
1284 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
1286 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
1288 * DEFCONSTANT now throws a condition of type
1289 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
1290 constant to a non-EQL value; CONTINUE and ABORT restarts
1291 respectively change and preserve the value.
1292 * fixed bug 63: The code walker, part of the implementation of CLOS,
1293 is now better at handling symbol macros.
1294 * bug fix: There is no longer an internal implementation type named
1295 CL:LENGTH. (reported by Raymond Toy)
1296 * bug fix: In macro-like defining macros/special operators the
1297 implicit block does not enclose the lambda list.
1298 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
1299 enclosed in parentheses) are not suitable as type specifiers, and
1300 their use properly signals an error now.
1301 * bug fix: An argument count mismatch for a type specifier in code
1302 being compiled no longer causes an unhandled error at compile
1303 time, but signals a compile-time warning.
1304 * fixed simple vector readable printing
1305 * bug fix: DESCRIBE takes more care over whether the class
1306 precedence list slot of a class is bound before accessing it.
1307 (reported by Markus Krummenacker)
1308 * bug fix: FORMATTER can successfully compile pretty-printer format
1309 strings which use variants of the ~* directive inside.
1310 * bug fix: SEARCH now applies its TEST predicate to the elements of
1311 the arguments in the correct order. (thanks to Wolfhard Buss)
1312 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
1313 in type inference. (thanks to Robert E. Brown)
1314 * bug fix: Reading in symbols with an explicit package name of ""
1315 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
1316 * fixed some bugs revealed by Paul Dietz' test suite:
1317 ** NIL is now allowed as a structure slot name.
1318 ** Arbitrary numbers, not just REALs, are allowed in certain
1319 circumstances in LOOP for-as-arithmetic clauses.
1320 ** Multiple class redefinitions before slot access no longer
1321 causes a type error.
1322 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
1323 association between the name and a class.
1324 ** Generic functions with non-standard method-combination and over
1325 five methods all of which return constants no longer return NIL
1326 after the first few invocations. (thanks to Gerd Moellmann)
1327 ** CALL-NEXT-METHOD with no arguments now passes the original
1328 values of the arguments, even in the presence of assignment.
1329 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
1331 ** DISASSEMBLE works with closures and funcallable instances.
1332 ** ADD-METHOD now returns the generic function, not the new method.
1333 ** FIND-METHOD signals an error if the lengths of the specializers
1334 is incompatible with the generic function, even if the ERRORP
1336 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
1337 which its argument is a member.
1338 ** DEFCLASS only redefines the class named by its class-name
1339 argument if that name is the proper name of the class;
1340 otherwise, it creates a new class.
1341 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
1342 of the UNBOUND-SLOT condition to the name of the slot.
1343 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
1344 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
1345 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
1346 SLOT-MAKUNBOUND in the specified fashion.
1348 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
1349 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
1350 cross-compilation host. As a consequence, we can now bootstrap our
1351 way up to SBCL starting with a bare gcc toolchain and human-readable
1352 source code (first the source to CLISP, then the source to SBCL).
1353 * A contributed module containing a partial implementation of the
1354 simple-streams interface has been included. (thanks to Rudi
1356 * A contributed module implementing the RFC1321 Message Digest
1357 Algorithm, known as MD5, has been included.
1358 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1359 no longer has any effect, as the code controlled by this feature
1360 has been deleted. (As far as we know, no-one has ever built using
1361 this feature, and its semantics were confused in any case).
1362 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
1363 work on conditions (as required by the ANSI specification),
1364 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
1365 expected behaviour on conditions. Users should note, however,
1366 that such behaviour is not required by the ANSI specification,
1367 and so use of this behaviour may render their code unportable.
1368 * fixed some bugs revealed by Paul Dietz' test suite:
1369 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
1371 ** &ENVIRONMENT parameter in macro lambda list is bound first.
1372 ** SXHASH on condition objects no longer returns NIL.
1373 ** :ALLOCATION :CLASS slots are better treated; their values are
1374 updated on class redefinition, and initforms inherited from
1375 superclasses are applied.
1376 ** REMOVE-METHOD returns its generic function argument even when
1377 no method was removed.
1378 ** SHARED-INITIALIZE now initializes the values of the requested
1379 slots, including those with :ALLOCATION :CLASS.
1380 ** ALLOCATE-INSTANCE now works on structure classes defined via
1381 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
1383 ** SLOT-EXISTS-P now works on conditions, as well as structures
1385 ** MAKE-LOAD-FORM now has the required methods on
1386 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
1387 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
1388 keyword, and now implements the SLOT-NAMES argument.
1389 ** methods with &OPTIONAL arguments no longer allow too many
1390 arguments to be passed in the call without error.
1391 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
1392 option is consistent with the required arguments of the generic
1393 function lambda list.
1394 * bug fix: REQUIRE accepts a string designator. (Thanks to
1396 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
1397 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
1398 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
1399 * bug fix: The compiler now checks for duplicated variables in macro
1401 * bug fix: SETQ on globals returns the correct value.
1402 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
1403 not a COMPILER-ERROR (followed by some other strange error on
1404 choosing the CONTINUE restart).
1405 * bug fix: make.sh and friends are now more consistent in the way that
1406 they look for GNU "make".
1408 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
1409 * experimental native threads support (on x86 Linux >=2.4 only).
1410 This is not compiled in by default: you need to add :SB-THREAD to
1411 the target features. See the "Beyond ANSI" chapter of the manual
1413 * fix for longstanding nonANSIism: The old distinction between
1414 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
1415 The return value from CL:FIND-CLASS is now a CLOS class, and
1416 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
1417 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
1418 * An interface to the MetaObject Protocol, as described in Kiczales,
1419 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
1420 MIT Press, 1991, is available from the SB-MOP package.
1421 * incompatible change: the SB-PCL package should now be considered
1422 a private implementation detail, and no longer a semi-private MOP
1424 * minor incompatible change: due to rearrangement for threads, the
1425 control stack and binding stack are now allocated at arbitrary
1426 addresses instead of being hardcoded per-port. Users affected by
1427 this probably have to be doing advanced things with shared
1428 libraries, and will know who they are.
1429 * minor incompatible change: Previously, all --eval forms used were
1430 processed with READ before any of them were processed with EVAL.
1431 Now each --eval form is processed with both READ and EVAL before
1432 the next --eval form is processed. (Thus package operations like
1433 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
1434 work as the user might reasonably expect.)
1435 * minor incompatible change: *STANDARD-INPUT* is now only an
1436 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
1438 * minor incompatible change: Y-OR-N-P is now character-oriented,
1439 not line oriented. Also, YES-OR-NO-P now works without errors.
1440 (thanks to Antonio Martinez)
1441 * sb-aclrepl module improvements: an integrated inspector, added
1442 repl features, and a bug fix to :trace command.
1443 * Known functions, which cannot be open coded by the backend, are
1444 considered to be able to check types of their arguments. (fixing
1445 a bug report by Nathan J. Froyd)
1446 * fixed a bug in computing method discriminating functions: It is
1447 now possible to define methods specialized on classes which have
1448 forward-referenced superclasses. (thanks to Gerd Moellmann)
1449 * fixed evaluation order in optional entries (reported by Gilbert
1451 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
1452 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
1453 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
1454 required-by-AMOP NAME argument, as well as CLASS and
1455 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
1456 * fixed bug 20: DEFMETHOD can define methods using names that are
1457 not the proper names of classes to designate class specializers.
1458 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
1459 Unix file descriptors, instead of blowing up. (thanks to Antonio
1461 * Garbage collection refactoring: user-visible change is that a
1462 call to the GC function during WITHOUT-GCING will not do garbage
1463 collection until the end of the WITHOUT-GCING. If you were doing
1464 this you were probably losing anyway.
1465 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
1466 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
1467 TYPEP the latter but not the former.
1468 * The compiler issues a full WARNING for calls to undefined functions
1469 with names from the CL package.
1470 * MAP-INTO for a vector destination is open coded. (reported by
1471 Brian Downing on c.l.l)
1472 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
1473 documentation string.
1474 * fixed some bugs revealed by Paul Dietz' test suite:
1475 ** COPY-ALIST now signals an error if its argument is a dotted
1477 ** Condition slots are now accessed more correctly in the presence
1478 of multiple initargs for a given slot.
1479 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
1480 exclude restarts of the same name associated with a different
1482 ** DEFCLASS of forward-referenced classes with another
1483 forward-referenced class in the superclasses list no longer
1485 ** Condition slots are now initialized once each, not multiple
1486 times. (thanks to Gerd Moellmann)
1487 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
1489 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
1490 ** NSET-EXCLUSIVE-OR does not return extra elements when its
1491 arguments contain duplicated elements.
1492 ** RESTART-CASE understands local macros.
1493 ** RESTART-CASE associates exactly its own restarts with a condition.
1494 ** ENDP in safe mode checks its argument to be of type LIST.
1495 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
1496 in question is unbound.
1497 ** Optimized MAKE-INSTANCE functions no longer cause internal
1498 assertion failures in the presence of duplicate initargs.
1499 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
1500 ** Side-effectful :DEFAULT-INITARGS have their side-effects
1501 propagated even in the ctor optimized implementation of
1503 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
1505 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
1506 * a better implementation of SXHASH on (simple) bit vectors,
1507 measured both in execution speed and in distribution of results
1508 over the positive fixnums, has been installed. Likewise, a better
1509 implementation of EQUAL for simple bit vectors is now available.
1510 * fixed CEILING optimization for a divisor of form 2^k.
1511 * fixed bug 240 (emitting extra style warnings "using the lexical
1512 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
1513 by Antonio Martinez)
1514 * fixed SXHASH, giving different results for NIL depending on type
1515 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
1516 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
1517 variable. (found by Rolf Wester)
1518 * SBCL does not ignore type declarations for special
1519 variables. (reported by rif on c.l.l 2003-03-05)
1520 * some bug fixes in contrib/sb-aclrepl/
1521 * fixed some bugs revealed by Paul Dietz' test suite:
1522 ** a bug in the CONS type specifier, whereby the CAR and CDR
1523 types got intertwined, has been fixed;
1524 ** the type system is now able to reason about the interaction
1525 between INTEGER and RATIO types more completely;
1526 ** APPEND, [N]REVERSE and NRECONC check that those their
1527 arguments, which must be proper lists, are really so;
1528 ** An array specialized to be unable to hold elements has been
1529 implemented, as required -- yes, really -- by ANSI;
1530 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
1531 on malformed property lists;
1533 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
1534 * incompatible packaging change: in line with Unix convention,
1535 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
1536 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
1537 * REQUIRE and PROVIDE are now optionally capable of doing something
1538 useful. See the documentation string for REQUIRE.
1539 * infrastructure for a managed SBCL contrib system: contributed
1540 modules in this release include:
1541 ** the ASDF system definition facility;
1542 ** an interface to the BSD Sockets API;
1543 ** an ACL-like convenience interface to the repl;
1544 (thanks to Kevin Rosenberg)
1545 ** an implementation of ROTATE-BYTE, with efficient implementation
1547 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
1548 gives a closer approximation to the right answer than previously.
1549 (thanks to Raymond Toy)
1550 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
1551 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
1552 optional environment arguments, as required by ANSI.
1553 * fixed bugs in other functions taking environment objects, allowing
1554 calls with an explicit NIL environment argument to be compiled
1556 * fixed bug 228: primary return values from
1557 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
1558 COMPILE or FUNCTION.
1559 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
1560 :TYPE will no longer signal errors on innocuous objects.
1561 * fixed bug 231b: SETQ is better at respecting type declarations in
1562 the lexical environment.
1563 * fixed a bug in DEFCLASS: classes named by symbols with no or
1564 unprintable packages can now be defined.
1565 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
1566 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
1567 * fixed compiler failure related to checking types of functions.
1568 (reported by Robert E. Brown)
1569 * the compiler is now much more consistent in its error-checking
1570 treatment of bounding index arguments to sequence functions: in
1571 (SAFETY 3) code, errors will be signalled in almost all cases if
1572 invalid sequence bounding indices are passed to functions defined
1573 by ANSI to operate on sequences.
1574 * fixed a bug in the build procedure: documentation of SBCL-specific
1575 packages is now preserved and available in the final Lisp image.
1576 * lifted FDEFINITION lookup out of loops in the implementation of
1577 many list operations. (thanks to Robert E. Brown)
1578 * fixed a bug in the reader: the #n# reader macro now works for
1579 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
1580 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
1581 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
1582 E. Brown and Tony Martinez respectively)
1583 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
1584 SLOT-BOUNDP: in particular, it is now able to optimize them much
1585 better, and is now not vulnerable to having packages renamed.
1586 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
1587 always called when a slot is not present in an instance. (thanks
1589 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
1590 longer signal an error on unreading a character following EOF on
1591 the previous constituent stream. (thanks to Tony Martinez)
1592 * fixed some bugs revealed by Paul Dietz' test suite:
1593 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
1594 not just nonnegative fixnums;
1595 ** the logical bit-array operators such as BIT-AND now accept an
1596 explicit NIL for their "opt-arg" argument (to indicate a
1597 freshly-consed result bit-array);
1598 ** ELT now signals an error on an invalid sequence index in safe
1600 ** the type system is now cleverer about negations of numeric
1601 types, and consequently understands the BIGNUM and RATIO types
1603 ** the type system is now cleverer about the interaction between
1604 INTEGER and RATIO types: while bugs still remain, many more
1605 cases are accurately computed;
1606 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
1607 if it is in the last clause;
1608 ** CONSTANTLY now correctly returns a side-effect-free function in
1610 ** DECLARE is no longer treated as a special-operator; in
1611 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
1612 * incremented fasl file version number due to the change in the
1613 DEFSTRUCT-SLOT-DESCRIPTION structure.
1615 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
1616 * minor incompatible change: code processed by the "interpreter" or
1617 EVAL now has a compilation optimization policy of (DEBUG 2)
1618 (changed from (DEBUG 1)) to improve debuggability of interactive
1619 development, and to allow the use of the debug RETURN command in
1621 * an experimental implementation of the RETURN command for the
1622 debugger has been included. (thanks to Frederik Kuivinen)
1623 * fixed bug 62: constraints were not propagated into a loop.
1624 * fixed bug in embedded calls of SORT (reported and investigated by
1626 * fixed some bugs revealed by Paul Dietz' test suite:
1627 ** printing and reading of arrays with some dimensions having
1628 length 0 (thanks to Gerd Moellmann);
1629 ** BOA constructor with &AUX argument without a default value does
1630 not cause a type error;
1631 ** CONSTANTP now returns true for all self-evaluating objects.
1633 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
1634 * fixed bug 127: DEFSTRUCT now does not clobber old structure
1635 accessors that are related by inheritance, as specified in the
1636 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
1637 Valtteri Vuorikoski)
1638 * The compiler is now able to inline functions that were defined in
1639 a complex lexical environment (e.g. inside a MACROLET).
1640 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
1642 * Support for the upcoming FreeBSD-5.0 release has been included.
1643 (thanks to Dag-Erling Smorgrav)
1644 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
1645 effect when it is not in a toplevel context.
1646 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
1647 stand a better chance of being correct. (thanks to Gerd
1649 * fixed bug in COERCE, which now signals an error on coercing a
1650 rational to a bounded real type which excludes the expected
1652 * The compiler is now able to derive types more accurately from the
1653 COERCE and COMPILE functions.
1654 * fixed bug 223: functional binding is considered to be constant
1655 only for symbols in the CL package.
1656 * fixed bug 231: SETQ did not check the type of a variable being set
1657 (reported by Robert E. Brown)
1658 * A new optimization for MAKE-INSTANCE has been included, fixing
1659 various bugs (including relating to :ALLOCATION :CLASS slots and
1660 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
1662 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
1663 ** As required by ANSI, LOOP now disallows anonymous collection
1664 clauses such as COLLECT I in conjunction with aggregate boolean
1665 clauses such as THEREIS (= I 1);
1666 ** LOOP now signals an error when any variable is reused in the
1667 same loop (including the potentially useful construct analogous
1668 to WITH A = 1 WITH A = (1+ A);
1669 ** IT is only a special loop symbol within the first clause of a
1670 conditional loop clause;
1671 ** LOOP with a typed iteration variable over a hashtable now
1672 signals a type error iff it should.
1673 * fixed some other bugs revealed by Paul Dietz' test suite:
1674 ** FILE-STREAM now names the class previously known as FD-STREAM;
1675 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
1676 argument) no longer signals an error;
1677 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
1678 of the slot symbol, rather than using the current package
1679 ((:CONC-NAME "") continues to intern the slot's name in the
1681 * incremented fasl file version number, because of the incompatible
1682 change to the DEFSTRUCT-DESCRIPTION structure, and again because
1683 of the new implementation of DEFINE-COMPILER-MACRO.
1685 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
1686 * Support for building SBCL for MIPS platforms running in
1687 little-endian mode has now been checked in, and basic
1688 functionality on said platforms verified.
1689 * minor incompatible change: PCL now records the pathname of a file
1690 in which methods and the like are defined, rather than its
1692 * minor incompatible change: TRUENAME now considers the truename of
1693 a file naming a directory to be the pathname with :DIRECTORY
1694 component indicating that directory.
1695 * minor incompatible change: a NAMED clause in the extended form of
1696 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
1697 reason for the previous behaviour is unclear.
1698 * more systematization and improvement of CLOS and MOP conformance
1699 in PCL (thanks to Gerd Moellman and Pierre Mai):
1700 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
1702 ** DEFINE-METHOD-COMBINATION no longer signals an error for
1703 primary methods with no specializers;
1704 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
1706 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
1707 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
1708 FORWARD-REFERENCED-CLASSes; error reporting on
1709 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
1711 ** SXHASH on CLOS instances now uses a slot internal to the
1712 instance to return different numbers on distinct instances,
1713 while preserving the same return value through invocations of
1715 ** DEFMETHOD signals errors when methods with longer incongruent
1716 lambda lists are added to generic functions;
1717 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
1718 CLASS, as specified in AMOP;
1719 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
1720 on the order returned by the primary method for classes of
1721 class STANDARD-CLASS;
1722 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
1723 * fixed some bugs shown by Paul Dietz' test suite:
1724 ** DOLIST puts its body in TAGBODY;
1725 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
1727 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
1728 value producing form;
1729 ** if more variables are given to PROGV than values, extra
1730 variables are bound and made to have no value;
1731 ** NSUBSTITUTE on list arguments gets the right answer with
1733 ** ELT signals an error of type TYPE-ERROR when the index argument
1734 is not a valid sequence index;
1735 ** LOOP signals (at macroexpansion time) an error of type
1736 PROGRAM-ERROR when duplicate variable names are found;
1737 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
1738 ** FUNCALL of special-operators now cause an error of type
1740 ** PSETQ now works as required in the presence of side-effecting
1741 symbol-macro places;
1742 ** NCONC accepts any object as its last argument;
1743 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
1745 ** loop-for-as-package does not require a package to be explicitely
1747 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
1749 * fixed bug 166: compiler preserves "there is a way to go"
1750 invariant when deleting code.
1751 * fixed bug 172: macro lambda lists with required arguments after
1752 &REST arguments now cause an error to be signalled. (thanks to
1754 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
1755 bug. (thanks to Matthew Danish)
1756 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
1758 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
1759 arguments are lexically rebound. (thanks to Gerd Moellmann and
1761 * fixed bug 194: error messages are now more informative when there
1762 is no primary method applicable in a call to a generic
1763 function. (thanks to Gerd Moellmann)
1764 * fixed bug in command line argument checking (thanks to Julian
1766 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
1767 (thanks to Matthew Danish)
1768 * incremented fasl file version number, because of the
1769 SXHASH-related changes in the layout of CLOS data structures
1771 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
1772 * minor incompatible change: The runtime (the Unix executable named
1773 "sbcl") is now much pickier about the .core files it will load.
1774 Essentially it now requires .core files to descend from the same
1775 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
1776 as the runtime does. (The intent is to prevent the crashes which
1777 can occur, and which can even be reported as mysterious failures,
1778 when people patch the sources or change the build parameters
1779 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
1780 sbcl and .core files.)
1781 * fixed bug: VALUES-LIST is no longer optimized away.
1782 * fixed bug 142: The FFI conversion of C string values to Lisp
1783 string values no longer conses excessively. (thanks to Nathan
1784 Froyd porting Raymond Toy's fix to CMU CL)
1785 * began to systematize and improve MOP conformance in PCL (thanks to
1786 Nathan Froyd, Gerd Moellman and Pierre Mai):
1787 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
1789 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
1790 ** FINALIZE-INHERITANCE is now called on class finalization;
1791 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
1792 argument precedence order.
1793 * fixed bug 202: The compiler no longer fails on functions whose
1794 derived types contradict their declared type.
1795 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
1796 so it can be non-toplevel.
1797 * The fasl file version number has changed (because of the new
1798 implementation of DEFMACRO).
1799 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
1800 safe code, that any length requirement by their type-specifier
1801 argument is valid. The exceptions to this are described in bug
1803 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
1804 functions now check the types of their inputs as required by ANSI.
1805 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
1806 introduced symbol is DECLAREd to be SPECIAL.
1807 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
1808 * fixed bug: :COUNT argument to sequence functions may be negative
1809 * fixed bug: body of DO-SYMBOLS may contain declarations
1810 * fixed bug: PUSHNEW now evaluates its arguments from left to right
1811 (reported by Paul F. Dietz, fixed by Gerd Moellman)
1812 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
1813 symbol macro only once
1814 * fixed printing of call frame when argument list is unavailable
1815 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
1816 * compiler no longer signals WARNING on unknown keyword
1819 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
1820 * A beta-quality port to the mips architecture running Linux,
1821 based on the old CMUCL backend, has been made. It has been tested
1822 on a big-endian kernel, and works sufficiently well to be able to
1823 rebuild itself; it has not been tested in little-endian mode.
1824 * fixed an inconsistency between gencgc.c and purify.c which made
1825 dumping/loading .core files unreliable
1826 * fixed bug 120a: The compiler now deals correctly with IFs where
1827 the consequent is the same as the alternative, instead of
1828 misderiving the return type. (thanks to Alexey Dejneka)
1829 * fixed bug 113: Logical pathnames are now dumpable (the logical
1830 host is resolved at load-time, throwing an error if it is not
1832 * fixed bug 174: FORMAT's error message is slightly clearer when a
1833 non-printing character is used in a format directive.
1834 * fixed several bugs in compiler checking of type declarations, i.e.
1835 violations of the Python "declarations are assertions" principle
1836 (thanks to Alexey Dejneka)
1837 * fixed several bugs in PCL's error checking (thanks to Gerd
1839 * fixed bug: printing of FILE-ERROR (thanks to Antonio
1841 * fixed bug in compilation of functions as first class values
1842 (thanks to Antonio Martinez-Shotton)
1843 * The compiler's handling TYPE-ERRORs which it can prove will
1844 inevitably happen at runtime has been cleaned up and corrected
1845 in several ways. (thanks to Alexey Dejneka)
1846 * improved argument type checking for various basic arithmetic
1847 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
1848 lavished on them in the past that they can be compiled in many
1849 ways in different special cases
1850 * fixed bug 181: compiler checks validity of user supplied type
1852 * cleaned up code flushing in optimization: Function calls which
1853 should signal errors for safety purposes (e.g. which ANSI says
1854 should signal errors when their arguments are of incorrect type)
1855 are no longer optimized away.
1856 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
1857 * incremented fasl file version number, because changes in the
1858 implementation of sequence functions like COERCE caused
1859 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
1860 in old inline expansions) to become undefined. (Actually these
1861 changes were later undone, so we might very well be binary
1862 compatible with 0.7.7 after all, but leaving the version number
1863 incremented seemed like the simplest and most conservative
1866 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
1867 * An alpha-quality port to the parisc architecture running Linux,
1868 based on the old CMUCL backend, has been made. This, even more so
1869 than the other backends, should be considered still a work in
1870 progress; known problems include that the Linux kernel in 64-bit
1871 mode does not propagate the correct sigcontext structure to
1872 userspace, and consequently SBCL on a parisc64 kernel will not
1874 * fixed bug 189: The compiler now respects NOTINLINE declarations for
1875 functions declared in FLET and LABELS. (I.e. "LET conversion" is
1876 suppressed.) Also now that the compiler is looking at declarations
1877 in the environment, it checks optimization declarations as well,
1878 and suppresses inlining when (> DEBUG SPEED).
1879 * More fixes have been made to treatment of floating point exception
1880 treatment and other Unix signals. In particular, floating point
1881 exceptions no longer cause Bus errors on the SPARC/Linux platform.
1882 * The detection and handling of control stack exhaustion (infinite
1883 or very deeply nested recursion) has changed. Stack exhaustion
1884 detection is now done by write-protecting pages at the OS level
1885 and applies at all optimization settings; when found, a
1886 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
1887 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
1888 be caught using IGNORE-ERRORS.
1889 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
1890 correctly when transforming recursive LABELS functions to LETs.
1891 (thanks to Alexey Dejneka)
1892 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
1893 that are names of constants or global variables.
1894 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
1895 alien routines with docstrings.
1896 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
1897 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
1899 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
1900 (thanks to Eric Marsden)
1901 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
1902 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
1903 * Bug fix: The SPARC backend can now compile functions involving
1904 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
1905 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
1906 to a functions expecting a PATHNAME-DESIGNATOR.
1907 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
1908 lambda lists. (thanks to Alexey Dejneka)
1909 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
1910 functions so that EXPORTing the name of the class doesn't cause
1911 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
1912 to Antonio Martinez for reporting this)
1913 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
1914 constant-folded without failing an assertion. (thanks to Einar
1915 Floystad Dorum for reporting this)
1916 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
1917 types are now dealt with more correctly by the compiler.
1918 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
1919 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
1920 behaviour analogous to RENAME-FILE. This puts its behaviour more
1921 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
1923 * The fasl file version number has changed again. (because of the
1924 bug fix involving the names of PCL MAKE-INSTANCE functions)
1926 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
1927 * bug fix: Floating point exceptions are treated much more
1928 consistently on the x86/Linux and PPC/Linux platforms.
1929 * Array initialization with :INITIAL-ELEMENT is now much faster for
1930 cases when the compiler cannot open code the array creation, but
1931 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
1932 array accesses have also seen a speed increase.
1933 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
1934 specified. (This was at the root of some bad interactions between
1935 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
1937 * bug fix: Internal error arguments for undefined functions are now
1938 computed correctly on the PPC/Linux platform.
1939 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
1940 Raymond Toy's patch for CMU CL)
1941 * Support for the Solaris 9 operating environment has been included
1942 (thanks to Daniel Merritt)
1943 * A very ugly but hopefully complete draft of the missing FFI chapter
1944 of the manual has been created by reformatting the corresponding
1945 CMU CL manual chapter into (currently very ugly and incoherent)
1946 DocBook and bringing it up to date for SBCL behavior. Thus, the
1947 manual is now essentially complete, at least by my extreme
1948 once-and-only-once standards, whereby it's acceptable to refer to
1949 the doc strings of SB-EXT functions as the primary documentation.
1950 * The fasl file version number has changed again, due to cleanup of
1951 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
1952 is no longer a static symbol.)
1954 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
1955 * SBCL now builds with OpenMCL (version 0.12) as the
1956 cross-compilation host; also, more progress has been made toward
1957 bootstrapping under CLISP.
1958 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
1960 * bug 158 fixed: The compiler can now deal with integer loop
1961 increments different from 1; fixing this turned out also to fix
1963 * bug 169 fixed: no more bogus warnings about using lexical bindings
1964 despite the presence of perfectly good SPECIAL declarations (thanks
1965 to David Lichteblau)
1966 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
1967 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
1968 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
1970 * bug 180 fixed: Method combination specifications no longer ignore
1971 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
1972 * bug fix: Structure type predicate functions now check their argument
1973 count as they should.
1974 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
1975 correctly. (thanks to Pierre Mai)
1976 * minor incompatible change: The --noprogrammer option is deprecated
1977 in favor of the new --disable-debugger option, which is very similar.
1978 (The major difference is that it takes effect at a slightly different
1979 time at startup, causing handling of errors in --sysinit and
1980 --userinit files will be affected differently.) The
1981 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
1982 been added to allow this functionality to be controlled from ordinary
1983 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
1984 maintainers, who might want to run non-interactive scripts to
1985 build SBCL cores which will later be used interactively.)
1986 * minor incompatible change: The LOAD function no longer, when given
1987 a wild pathname to load, loads all files matching that pathname.
1988 Instead, an error of type FILE-ERROR is signalled.
1990 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
1991 * bug 147 fixed: The compiler preserves its block link/count
1992 invariants more correctly now so that it doesn't crash. (thanks
1994 * Dynamic loading of object files in OpenBSD is now supported. (thanks
1996 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
1997 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
1998 no-value-for-this-character as NIL (as specified by ANSI).
1999 * HOST-NAMESTRING on physical pathnames now returns a string that is
2000 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2001 (thanks to Christophe Rhodes)
2002 * The Alpha port handles icache flushing more correctly. (thanks to
2004 * More progress has been made toward bootstrapping under CLISP. (thanks
2005 to Christophe Rhodes)
2006 * The fasl file format has changed again, because dynamic loading
2007 on OpenBSD (which has non-ELF object files) motivated some cleanups
2008 in the way that foreign symbols are transformed and passed around.
2009 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2010 is no longer treated as whitespace by the reader, but instead as
2011 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2012 |A
\7fB|, instead of A as it used to.
2014 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2015 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2016 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2017 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2018 this as of 0.7.1.45, but was left out of the previous news section
2019 (thanks to Dan Barlow)
2020 * SBCL now runs on the Solaris operating system on SPARC architectures
2021 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2022 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2023 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2024 * SPARC backend cleanups, allowing builds of cores optimized for V8
2025 and V9 SPARCS, and also emission of code targeted to a particular
2026 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2028 * SBCL is closer to bootstrapping under CLISP, thanks to various
2029 fixes by Christophe Rhodes.
2030 * The fasl file format has changed again, to allow the compiler's
2031 INFO database to support symbol macros.
2032 * The user manual (in doc/) is formatted into HTML more nicely.
2033 (thanks to coreythomas)
2034 * The system is smarter about SUBTYPEP relationships, especially
2035 those involving NOT types (including types such as ATOM which are
2036 represented internally using NOT types). Thus SUBTYPEP is less
2037 likely to return (VALUES NIL NIL) in general, and in particular
2038 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2040 * The fasl file format has changed again, because the internal
2041 representation of types now includes a new slot to support the new
2042 SUBTYPEP-of-NOT-types logic.
2043 * (not a change in the main branch of SBCL, but a related prototype
2044 which can hopefully be merged into the main branch of SBCL in the
2045 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2046 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2047 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2048 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2049 dispatch macro character combinations. (thanks to Alexey Dejneka)
2050 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2051 that superficially look like logical namestrings correctly.
2052 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2054 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2055 default supplied-p) for &optional and &key arguments. (thanks to
2058 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2059 * incompatible change: The compiler is now less aggressive about
2060 tail call optimization, doing it only when (> SPACE DEBUG) or
2061 (> SPEED DEBUG). (This is an incompatible change because there are
2062 programs which relied on the old CMU-CL-style behavior to optimize
2063 away their unbounded recursion which will now die of stack overflow.)
2064 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2065 for non-GENCGC systems has been increased to 20M (since that
2066 seems much closer to the likely performance optimum for modern
2067 systems than the old 4M value was)
2068 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2069 and *DEBUG-PRINT-LEVEL*
2070 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2071 of CMU CL's support for SPARC, and various endianness and other
2072 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2073 * new syntactic sugar for the Unix command line: --load foo.bar is now
2074 an alternate notation for --eval '(load "foo.bar")'.
2076 ** The system now detects stack overflow and handles it gracefully,
2077 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2078 optimization settings. (This is a good thing in general, and
2079 its introduction in this version should be particularly timely
2080 for anyone whose code fails because of suppression of tail
2082 ** The system now hunts for the C variable "environ" in a more
2083 devious way, to avoid segfaults when the C library version differs
2084 between compile time and run time. (thanks to Christophe Rhodes)
2085 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2086 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2087 ** The compiler no longer issues bogus style warnings for undefined
2088 classes in the same source file as the DEFCLASSes which defined
2089 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2091 ** fixes in CONDITION class precedence list for undefined function
2092 errors (thanks to Alexei Dejneka)
2093 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2094 correctly. (thanks to Dan Barlow)
2095 ** portability fixes aiming at bootstrapping under CLISP (thanks
2096 to Dave McDonald and Christophe Rhodes)
2097 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2098 ** fixes in type translation and and type inference (thanks to
2100 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2101 ** various fixes in the new ports (thanks to Dan Barlow)
2102 * several changes related to debugging:
2103 ** suppression of tail recursion, as noted above
2104 ** stack overflow detection, as noted above
2105 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2106 is now the default. (For some time encapsulation has been more
2107 reliable than the breakpoint-based :ENCAPSULATE NIL
2108 implementation, at least on X86 systems; and I just noticed that
2109 encapsulation also seems closer to the spirit of the ANSI
2112 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
2114 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
2115 up properly again. (There was a packaging bug in 0.7.0 which
2116 left their definitions in SB-SYS::LOAD-FOREIGN and
2117 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
2118 vital for most things which interface to C-level interfaces,
2119 like extensions working with sockets or databases or
2120 Perl-compatible regexes or whatever, and the need to fix
2121 this bug is the main reason that 0.7.1 was released so
2123 ** DEFGENERIC is now choosier about the methods it redefines, so that
2124 reLOADing a previously-LOADed file containing DEFGENERICs does
2125 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
2126 cycle now works as it should. (thanks to Alexey Dejneka)
2127 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
2128 fixed by Christophe Rhodes. (He actually submitted this patch
2129 months ago, and I delayed until after 0.7.0.)
2130 ** Bug 111 (internal compiler confusion about runtime checks on
2131 FUNCTION types) was fixed by Alexey Dejneka.
2132 * Some internal cleanups (getting rid of variables which aren't
2133 needed now that the byte interpreter is gone) caused the fasl
2134 file format number to change again.
2136 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
2137 * major incompatible change: The default fasl file extension, i.e. the
2138 default extension for files produced by COMPILE-FILE, has changed
2139 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
2141 ** There are many changes in the implementation of the compiler.
2142 SBCL is now essentially a compiler-only implementation of ANSI
2143 Common Lisp. EVAL still "interprets" a few special cases, but
2144 almost all the interesting cases are handled by creating
2145 a LAMBDA expression, calling COMPILE on it, then calling
2146 FUNCALL on the result.
2147 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
2148 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
2149 Since the code is newer, there might still be some new bugs
2150 (though not as many as before Martin Atzmueller's fixes:-). But
2151 the new code is substantially simpler and clearer, and hopefully
2152 any remaining bugs will be simpler, less fundamental, and more
2153 fixable then the bugs in the old code.
2154 ** The revised compiler is still a little unsteady on its feet.
2156 *** The debugging information it produces (particularly the names
2157 of FUNCTION objects) is sometimes much less useful than what
2158 the old compiler produced.
2159 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
2160 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
2161 within a MACROLET) has been temporarily weakened.
2162 ** There are new compiler optimizations for various functions:
2163 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
2164 FIND-IF-NOT, POSITION-IF-NOT, and FILL
2165 *** the math functions TRUNCATE, FLOOR, and CEILING
2166 *** the function-of-all-trades COERCE
2167 Mostly these should be transparent, but there's one
2168 potentially-annoying problem (bug 117): when the compiler
2169 inline-expands a function and does type analysis on the result,
2170 it can create control paths which have type mismatches, and
2171 when it can't prove that those control paths aren't taken,
2172 it will issue WARNINGs about the type mismatches. This is
2173 a particular problem in practice for the new sequence functions.
2174 It's not clear how this should be fixed, and for now, a
2175 workaround is given in the entry for 117 in the BUGS file.
2176 ** (Because of the interaction between the two previous items --
2177 occasional inlining problems and new inline expansions -- some
2178 of the new sequence function optimizations won't really kick in
2179 completely until debugging information, and then inlining, are
2180 straightened out in some future version.)
2181 * minor incompatible changes:
2182 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
2183 DIRECTORY no longer implicitly promotes NIL slots of its
2184 pathname argument to :WILD. In particular, when you ask for the
2185 contents of a directory (which you used to be able to do without
2186 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
2187 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
2188 ** changes in behavior that ANSI explicitly defines to be
2189 implementation dependent:
2190 *** The new compiler-only implementation still conforms with ANSI,
2191 but acts a little different than before. Besides the obvious
2192 changes in performance tradeoffs (that the cost per form passed
2193 to EVAL has gone up, and the cost per form executed by EVAL
2194 has gone down), the behavior of the system changes a little
2195 because there are no longer any interpreted function objects.
2196 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
2197 e.g. doing COMPILE on the output of interactive DEFUN is
2199 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
2201 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
2202 has changed from (:CL) to NIL.
2203 *** The CHAR-NAME of unprintable ASCII characters which, unlike
2204 e.g. #\Newline and #\Tab, don't have names specified in the
2205 ANSI Common Lisp standard, is now based on their ASCII symbolic
2206 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
2207 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
2208 are no longer used for output.
2209 ** changes in internal implementation constants:
2210 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
2211 4 million. (If your application spends a lot of time GCing and
2212 you have a lot of RAM, you might want to experiment with
2213 increasing it even more.)
2214 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
2215 However, almost all old code should still continue to work without
2216 immediate update, as SB-C-CALL is now a (deprecated) nickname
2218 ** Old operator names in the style DEF-FOO are now deprecated in
2219 favor of new corresponding names DEFINE-FOO, for consistency with
2220 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
2221 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
2222 internal symbols, but a few supported extensions like
2223 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
2224 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
2225 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
2226 etc. as you get deeper into recursive calls to the debugger
2227 command loop, instead of the old "5]", "5]]", "5]]]"
2228 sequence. (I was motivated to do this when squabbles between
2229 ILISP and SBCL left me very deeply nested in the debugger. In the
2230 short term, this change will probably provoke more ILISP/SBCL
2231 squabbles, but hopefully it will be an improvement in the long run.)
2232 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
2233 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
2234 function, since declaiming return types involving aliens is
2235 (1) annoyingly messy to do by hand and (2) vital to efficient
2236 compilation of code which calls such functions.
2237 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
2238 longer reexported by the SB-EXT package. They're solely useful
2239 for alien code, so it seems more logical that you should get
2240 them from the SB-ALIEN package, not in SB-EXT.
2241 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
2242 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
2243 features. Instead, the code that they used to control is always
2244 built into the system.
2245 * many other bug fixes
2246 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
2247 advantage of the new EVAL-WHEN stuff and to clean them up in
2248 general, and they are now more ANSI-compliant in a number of
2249 ways. Martin Atzmueller is responsible for a lot of this.
2250 ** Besides the cleanups discussed above, Martin Atzmueller fixed
2252 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
2253 *** correct ERROR type for various file operations
2254 *** some fixes for Lisp streams
2255 *** DEFMETHOD syntax checking
2256 *** changing old weird representation of debug information as
2257 strings (which, among their other deficiencies, don't transform
2258 correctly when you rename packages, and don't change their
2259 print representation when you change things like *PACKAGE*
2260 and *PRINT-LENGTH*) to symbols and lists of symbols
2261 He also made several improvements and fixed several bugs in DESCRIBE.
2262 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
2264 *** misbehavior of WRITE-STRING/WRITE-LINE
2265 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
2266 and several other LOOP problems as well
2267 *** DIRECTORY when similar filenames are present
2268 *** DEFGENERIC with :METHOD options
2269 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
2270 *** bug in the optimization of ARRAY-ELEMENT-TYPE
2271 *** argument ordering in FIND with :TEST option
2272 *** mishandled package designator argument in APROPOS-LIST
2273 *** various problems in the backquote readmacro
2274 *** a bug in APROPOS
2275 *** probably some others that I'm not describing very well here,
2276 since the CVS log documents them by reference to sbcl-devel
2277 messages, and the SourceForge archives aren't working well.:-(
2278 ** Dan Barlow improved the Alpha port (and is making progress on the
2279 PPC port, for those of you who think different).
2280 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
2281 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
2282 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
2283 continues to work on the SPARC port (for those of you in a position
2284 to look down upon our little PC-compatible boxes from a great height).
2285 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
2286 and uses that copy, rather than the current dynamic value, when
2287 it's trying to decide whether to truncate output. Thus e.g.
2288 (let ((*print-lines* 50))
2289 (pprint-logical-block (stream nil)
2291 (let ((*print-lines* 8))
2292 (print (aref possiblybigthings i) stream)))))
2293 should now truncate the logical block only at 50 lines, instead of
2294 often truncating it at 8 lines, as it did before.
2295 * The doc/cmucl/ directory, containing old CMU CL documentation
2296 from the time of the fork, is no longer part of the base system.
2297 SourceForge has shut down its anonymous FTP service, and with it
2298 my original plan for distributing the old CMU CL documentation
2299 there. For now, if you need these files you can download an old
2300 SBCL source release and extract them from it.
2301 * The fasl file version number changed again, for dozens of reasons,
2302 some of which are apparent above.
2304 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
2305 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
2306 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
2307 patch, so that DISASSEMBLE output is much nicer.
2308 * The code in the SB-PROFILE package now seems reasonably stable.
2309 I still haven't decided what the final interface should look like
2310 (I'd like PROFILE to interact cleanly with TRACE, since both
2311 facilities use function encapsulation) but if you have a need
2312 for profiling now, you can probably use it successfully with
2313 the current CMU-CL-style interface.
2314 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
2315 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
2316 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
2317 link now returns the dangling link itself, and for similar
2318 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
2319 link itself. (In these cases the old code signalled an error and
2320 looped endlessly, respectively.) Thus, DIRECTORY now works even
2321 in the presence of dangling and cyclic symbolic links.
2322 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
2323 is now a supported extension again, since the consensus on
2324 sbcl-devel was that it can be useful for ordinary development
2325 work, not just for debugging SBCL itself.
2326 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
2327 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
2328 that currently-defined functions might be redefined later with
2329 different return types.
2330 * Hash tables can be printed readably, as inspired by CMU CL code
2331 of Eric Marsden and SBCL code of Martin Atzmueller.
2332 * better error handling in CLOS method combination, thanks to
2333 Martin Atzmueller porting Pierre Mai's CMU CL patches
2334 * more overflow fixes for >16Mbyte I/O buffers
2335 * A bug in READ has been fixed, so that now a single Ctrl-D
2336 character suffices to cause end-of-file on character streams.
2337 In particular, now you only need one Ctrl-D at the command
2338 line (not two) to exit SBCL.
2339 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
2341 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
2342 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
2343 does the right thing.
2344 * The implementation of some type tests, especially for CONDITION
2345 types, is now tidier and maybe faster, due to CMU CL code
2346 originally by Douglas Crosher, ported by Martin Atzmueller.
2347 * Some math functions have been fixed, and there are new
2348 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
2349 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
2350 * (There are also some new optimizers in contrib/*-extras.lisp. Those
2351 aren't built into sbcl-0.6.13, but are a sneak preview of what's
2352 likely to be built into sbcl-0.7.0.)
2353 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2354 CL, ported to SBCL by Martin Atzmueller)
2355 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2356 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2357 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2358 * There's a new slam.sh hack to shorten the edit/compile/debug
2359 cycle for low-level changes to SBCL itself, and a new
2360 :SB-AFTER-XC-CORE target feature to control the generation of
2361 the after-xc.core file needed by slam.sh.
2362 * minor incompatible change: The ENTRY-POINTS &KEY argument to
2363 COMPILE-FILE is no longer supported, so that now every function
2364 gets an entry point, so that block compilation looks a little
2365 more like the plain vanilla ANSI section 3.2.2.3 scheme.
2366 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
2367 returns the number of bytes consed since the system started,
2368 rather than the number consed since the first time the function
2369 was called. (The new definition parallels ANSI functions like
2370 CL:GET-INTERNAL-RUN-TIME.)
2371 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
2372 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
2373 supported. Now DIRECTORY always does the abstract Common-Lisp-y
2374 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
2375 * Fasl file version numbers are now independent of the target CPU,
2376 since historically most system changes which required version
2377 number changes have affected all CPUs equally. Similarly,
2378 the byte fasl file version is now equal to the ordinary
2381 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
2382 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
2383 is no longer recognized. I apologize for this, because it was
2384 listed in SB-EXT as a supported extension, but I found that
2385 its existing behavior was poorly specified, as well as incorrectly
2386 specified, and it looked like too much of a mess to straighten it
2387 out. I have enough on my hands trying to get ANSI stuff to work..
2388 * many patches ported from CMU CL by Martin Atzmueller, with
2389 half a dozen bug fixes in pretty-printing and the debugger, and
2390 half a dozen others elsewhere
2391 * fixed bug 13: Floating point infinities are now supported again.
2392 They might still be a little bit flaky, but thanks to bug reports
2393 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
2394 as flaky as they were.
2395 * The --noprogrammer command line option is now supported. (Its
2396 behavior is slightly different in detail from what the old man
2397 page claimed it would do, but it's still appropriate under the
2398 same circumstances that the man page talks about.)
2399 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
2400 are now supported, and enabled by default. Thus, the compiler can
2401 handle many floating point and complex operations much less
2402 inefficiently. (Thus e.g. you can implement a complex FFT
2404 * The compiler now detects type mismatches between DECLAIM FTYPE
2405 and DEFUN better, and implements CHECK-TYPE more correctly, and
2406 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
2407 thanks to patches from Martin Atzmueller.
2408 * various fixes to make the cross-compiler more portable to
2409 ANSI-conforming-but-different cross-compilation hosts (notably
2410 Lispworks for Windows, following bug reports from Arthur Lemmens)
2411 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
2412 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
2413 fixed thanks to Pierre Mai's CMU CL patches.
2414 * fixes to keep the system from overflowing internal counters when
2415 it tries to use i/o buffers larger than 16M bytes
2416 * fixed bug 45a: Various internal functions required to support
2417 complex special functions have been merged from CMU CL sources.
2418 (When I was first setting up SBCL, I misunderstood a compile-time
2419 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
2420 * improved support for type intersection and union, fixing bug 12
2421 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
2422 more obscure bugs as well
2423 * some steps toward byte-compiling non-performance-critical
2424 parts of the system, courtesy of patches from Martin Atzmueller
2425 * Christophe Rhodes has made some debian packages of sbcl at
2426 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
2427 From his sbcl-devel e-mail of 2001-04-08 they're not completely
2428 stable, but are nonetheless usable. When he's ready, I'd be happy
2429 to add them to the SourceForge "File Releases" section. (And if
2430 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
2431 * new fasl file format version number (because of changes in
2432 internal representation of (OR ..) types to accommodate the new
2433 support for (AND ..) types, among other things)
2435 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
2436 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
2438 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
2440 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
2441 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
2442 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
2443 * DESCRIBE now works on structure objects again.
2444 * Most function call argument type mismatches are now handled as
2445 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
2446 know whether the function will be redefined before the call is
2447 executed. (The compiler could flag local calls with full WARNINGs,
2448 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
2449 it doesn't keep track of enough information to know whether calls
2450 are local in this sense.)
2451 * Compiler output is now more verbose, with messages truncated
2452 later than before. (There should be some supported way for users
2453 to override the default verbosity, but I haven't decided how to
2454 provide it yet, so this behavior is still controlled by the internal
2455 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
2456 src/compiler/ir1util.lisp.)
2457 * Fasl file format version numbers have increased again, because
2458 support for the Gray streams extension changes the layout of the
2459 system's STREAM objects.
2460 * The Gray subclassable streams extension now works, thanks to a
2461 patch from Martin Atzmueller.
2462 * The full LOAD-FOREIGN extension (not just the primitive
2463 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
2464 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
2465 but like most other programs, it defaults to copying the Unix
2466 environment from the original process instead of starting the
2467 new process in an empty environment.
2468 * Extensions which manipulate the Unix environment now support
2469 an :ENVIRONMENT keyword option which doesn't smash case or
2470 do other bad things. The CMU-CL-style :ENV option is retained
2471 for porting convenience.
2472 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
2473 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
2475 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
2477 * A patch from Martin Atzmueller seems to have solved the SIGINT
2478 problem, and as far as we know, signal-handling now works cleanly.
2479 (If you find any new bugs, please report them!)
2480 * The system no longer defaults Lisp source file names to types
2481 ".l", ".cl", or ".lsp", but only to ".lisp".
2482 * The compiler no longer uses special default file extensions for
2483 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
2484 seems to expect a single default extension for all compiled code,
2485 and there's no compelling reason to try to stretch the standard
2486 to allow two different extensions.) Instead, byte-compiled files
2487 default to the same extension as native-compiled files.
2488 * Fasl file format version numbers have increased again, because
2489 a rearrangement of internal implementation packages made some
2490 dumped symbols in old fasl files unreadable in new cores.
2491 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
2492 many fewer weird special cases.
2493 * Bug #17 (differing COMPILE-FILE behavior between logical and
2494 physical pathnames) has been fixed, and some related misbehavior too,
2495 thanks to a patch from Martin Atzmueller.
2496 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
2497 by Tim Moore, ported to SBCL by Martin Atzmueller.
2498 * Martin Atzmueller fixed several filesystem-related problems,
2499 including bug #36, in part by porting CMU CL patches, which were
2500 written in part by Paul Werkowski.
2501 * More compiler warnings in src/runtime/ are gone, thanks to
2502 more patches from Martin Atzmueller.
2503 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
2506 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
2508 * DESCRIBE now works on CONDITION objects.
2509 * The debugger now handles errors which arise when trying to print
2510 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
2512 * The build system now uses an additional file, customize-target-features.lisp,
2513 to allow local modifications to the target *FEATURES* list. (The point of
2514 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
2515 debugging features enabled, without having to worry about propagating it
2516 into everyone's system when I do a "cvs update".) When no
2517 customize-target-features.lisp file exists, the target *FEATURES* list
2518 should be constructed the same way as before.
2519 * fixed bugs in DEFCONSTANT ANSI-compatibility:
2520 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
2521 warn about behavior which is undefined under the ANSI spec. Note: This
2522 is specified by ANSI, but it's not very popular with programmers.
2523 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
2524 macro in the SBCL sources for an example of a workaround which you
2525 might use to make portable ANSI-standard code which does what you want.
2526 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
2527 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
2528 when it's used as a non-toplevel form. (This is required in order
2529 to implement the DEFCONSTANT-EQX macro.)
2530 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
2531 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
2532 funny things, due to bugs in the implementation of EVAL-WHEN
2533 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
2534 non-toplevel DEFCONSTANTs are uncommon.)
2535 * The core file version number and fasl file version number have been
2536 incremented, because the old noncompliant DEFCONSTANT behavior involved
2537 calling functions which no longer exist, and because I also took the
2538 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
2539 * fixed bug 1 (error handling before read-eval-print loop starts), and
2540 redid debugger restarts and related debugger commands somewhat while
2542 ** The QUIT debugger command is gone, since it did something
2543 rather different than the SB-EXT:QUIT command, and since it never
2544 worked properly outside the main toplevel read/eval/print loop.
2545 Invoking the new TOPLEVEL restart provides the same functionality.
2546 ** The GO debugger command is also gone, since you can just invoke
2547 the CONTINUE restart directly instead.
2548 ** The TOP debugger command is also gone, since it's redundant with the
2549 FRAME 0 command, and since it interfered with abbreviations for the
2551 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
2553 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
2554 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
2555 some porting work by Martin Atzmueller)
2556 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
2557 with a boatload of patches which he ported to SBCL. Now that those
2559 ** The system tries to make sure that its low-priority messages
2560 are prefixed by semicolons, to help people who like to use
2561 syntax highlighting in their ILISP buffer. (This patch
2562 was originally due to Raymond Toy.)
2563 ** The system now optimizes INTEGER-LENGTH better, thanks to more
2564 patches originally written by Raymond Toy.
2565 ** The compiler understands coercion between single-value and
2566 multiple-VALUES type expressions better, getting rid of some very
2567 weird behavior, thanks to patches originally by Robert MacLachlan
2568 and Douglas Crosher.
2569 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
2570 lambda lists, thanks to a patch originally by Pierre Mai.
2571 ** The system no longer bogusly warns about "abbreviated type
2573 ** The compiler gets less confused by inlining and RETURN-FROM,
2574 thanks to some patches originally by Tim Moore.
2575 ** The system no longer hangs when dumping circular lists to fasl
2576 files, thanks to a patch originally from Douglas Crosher.
2577 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
2578 undefined function error.
2579 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
2580 in structure slot initforms) for now, documented workaround instead:-|
2581 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
2582 * fixed bug 5: added stubs for various Gray stream functions called
2583 in the not-a-CL:STREAM case, so that even when Gray streams aren't
2584 installed, at least appropriate type errors are generated
2585 * fixed bug 8: better reporting of various PROGRAM-ERRORs
2586 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
2587 consistently in DEFMETHOD forms.
2588 * removed bug 21 from BUGS, since Martin Atzmueller points out that
2589 it doesn't seem to affect SBCL after all
2590 * The C runtime system now builds with better optimization and many
2591 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
2593 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
2595 * The system is now under CVS at SourceForge (instead of the
2596 CVS repository on my home machine).
2597 * The new signal handling code has been tweaked to treat register
2598 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
2599 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
2600 downstream, e.g. in debug-int.lisp, has implicit dependencies
2601 on the unsignedness of integer representation of machine words,
2602 and that caused the system to bomb out with infinite regress
2603 when trying to recover from type errors involving signed values,
2604 e.g. (BUTLAST '(1 2 3) -1).)
2605 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
2606 (This was one of the bugs Peter Van Eynde reported back in July.)
2607 * The system now uses code inspired by Colin Walters' O(N)
2608 implementation of MAP (from the cmucl-imp@cons.org mailing
2609 list, 2 September 2000) when it can't use a DEFTRANSFORM to
2610 inline the MAP operation, and there is more than one
2611 sequence argument to the MAP call (so that it can't just
2612 do ETYPECASE once and for all based on the type of the
2613 single sequence argument). (The old non-inline implementation
2614 of the general M-argument sequence-of-length-N case required
2615 O(M*N*N) time when any of the sequence arguments were LISTs.)
2616 * The QUIT :UNIX-CODE keyword argument has been renamed to
2617 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
2618 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
2620 * Raymond Wiker's patches to port dynamic loading from Linux to
2621 FreeBSD have been added.
2622 * The BUGS file is now more nearly up to date, thanks in large part
2623 to Martin Atzmueller's review of it.
2624 * The debugger now flushes standard output streams before it begins
2625 its output ("debugger invoked" and so forth).
2626 * The core version number and fasl file version number have both
2627 been incremented, because of incompatible changes in the layout
2629 * FINISH-OUTPUT is now called more consistently on QUIT. (It
2630 used to not be called for a saved Lisp image.)
2631 * Martin Atzmueller's version of a patch to fix a compiler crash,
2632 as posted on sbcl-devel 13 September 2000, has been installed.
2633 * Instead of installing Martin Atzmueller's patch for the
2634 compiler transform for SUBSEQ, I deleted the compiler transform,
2635 and transforms for some similar consing operations.
2636 * A bug in signal handling which kept TRACE from working on OpenBSD
2638 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
2639 away by constant folding
2640 * The system now defines its address space constants in one place
2641 (in the Lisp sources), and propagates them automatically elsewhere
2642 (through GENESIS and the sbcl.h file). Therefore, patching the
2643 address map is less unnecessarily tedious and error-prone. The
2644 Lisp names of address space constants have also been systematized.
2645 * CVS tags like dollar-Header-dollar have been removed from
2646 the sources, because they have never saved me trouble and
2647 they've been source of trouble working with patches and other
2648 diff-related operations.
2649 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
2650 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
2652 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
2654 * The system has been ported to OpenBSD.
2655 * The system now compiles with a simple "sh make.sh" on the systems
2656 that it's supported on. I.e., now you no longer need to tweak
2657 text in the target-features.lisp-expr and symlinks in src/runtime/
2658 by hand, the make.sh takes care of it for you.
2659 * The system is no longer so grossly inefficient when compiling code
2660 involving vectors implemented as general (not simple) vectors (VECTOR T),
2661 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
2662 which dares to use the various sequence functions on non-simple
2663 vectors, takes less of a performance hit.
2664 * There is now a primitive type predicate VECTOR-T-P
2665 to test for the (VECTOR T) type, so that e.g.
2666 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
2667 can now be compiled with some semblance of efficiency. (The old code
2668 turned the type declaration into a full call to %TYPEP at runtime!)
2669 * AREF on (VECTOR T) is still not fast, since it's still compiled
2670 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
2671 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
2672 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
2673 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
2674 without making full calls to SUBTYPEP at runtime.
2675 (Some analogous efficiency issues for non-simple vectors specialized to
2676 element types other than T, or for non-simple multidimensional arrays,
2677 have not been addressed. They could almost certainly be handled the
2678 same way if anyone is motivated to do so.)
2679 * The changes in array handling break binary compatibility, so
2680 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
2681 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
2682 instead of (VALUES T T).
2683 * By following the instructions that Dan Barlow posted to sbcl-devel
2684 on 2 July 2000, I was able to enable primitive dynamic object
2685 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
2686 functionality is not implemented (since it calls ld to resolve
2687 library references automatically, requiring RUN-PROGRAM for its
2688 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
2689 try to resolve library references) is now supported.
2690 * The system now flushes the standard output streams when it terminates,
2691 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
2692 them at several other probably-convenient times, e.g. in each pass of
2693 the toplevel read-eval-print loop, and after evaluating a form given
2694 as an "--eval" command-line option. (These changes were motivated by a
2695 discussion of stream flushing issues on cmucl-imp in August 2000.)
2696 * The source transform for TYPEP of array types no longer assumes
2697 that an array whose element type is a not-yet-defined type
2698 is implemented as an array of T, but instead punts, so that the
2699 type will be interpreted at runtime.
2700 * There is now some support for cross-compiling in make.sh: each of
2701 the phases of make.sh has its own script. (This should be transparent
2702 to people doing ordinary, non-cross-compile builds.)
2703 * Since my laptop doesn't have hundreds of megabytes of memory like
2704 my desktop machine, I became more motivated to do some items on
2705 my to-do list in order to reduce the size of the system a little:
2706 ** Arrange for various needed-only-at-cold-init things to be
2707 uninterned after cold init. To support this, those things have
2708 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
2709 symbols with such names are now uninterned after cold init).
2710 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
2711 fasl files for cold load.
2712 ** Remove the old compiler structure pooling code (which used to
2713 be conditional on the target feature :SB-ALLOC) completely.
2714 ** Redo the representation of some data in cold init to be more compact.
2715 (I also looked into supporting byte compiled code at bootstrap time,
2716 which would probably reduce the size of the system a lot, but that
2717 looked too complicated, so I punted for now.)
2718 * The maximum signal nesting depth in the src/runtime/ support code has
2719 been reduced from 4096 to 256. (I don't know any reason for the very
2720 large old value. If the new smaller value turns out to break something,
2721 I'll probably just bump it back up.)
2722 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
2724 * Many, many bugs reported by Peter Van Eynde have been added to
2725 the BUGS list; some have even been fixed.
2726 * While enabling dynamic object file loading, I tried to make the
2727 code easier to understand, renaming various functions and variables
2728 with less ambiguous names, and changing some function calling
2729 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
2730 * While trying to figure out how to do the OpenBSD port, I tried to
2731 clean up some of the code in src/runtime/. In particular, I dropped
2732 support for non-POSIX signal handling, added various comments,
2733 tweaked the code to reduce the number of compilation warnings, and
2734 renamed some files to increase consistency.
2735 * To support the new automatic configuration functionality in make.sh,
2736 the source file target-features.lisp-expr has been replaced with the
2737 source file base-target-features.lisp-expr and the machine-generated
2738 file local-target-features.lisp-expr.
2739 * fixed a stupid quoting error in make.sh so that using CMU CL
2740 "lisp -batch" as cross-compilation host works again
2742 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
2744 * DESCRIBE no longer tries to call itself recursively to describe
2745 bound/fbound values, so that it no longer fails on symbols which are
2746 bound to themselves (like keywords, T, and NIL).
2747 * DESCRIBE now works on generic functions.
2748 * The printer now prints less-screwed-up representations of closures
2749 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
2750 * A private symbol is used instead of the :EMPTY keyword previously
2751 used to mark empty slots in hash tables. Thus
2752 (DEFVAR *HT* (MAKE-HASH-TABLE))
2753 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
2754 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
2755 now does what ANSI says that it should. (You can still get
2756 similar noncompliant behavior if bang on the hash table
2757 implementation with all the symbols you get back from
2758 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
2759 This breaks binary compatibility, since tests for equality to
2760 :EMPTY are wired into things like the macroexpansion of
2761 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
2763 * There's now a minimal placeholder implementation for CL:STEP,
2764 as required by ANSI.
2765 * An obscure bug in the interaction of the normal compiler, the byte
2766 compiler, inlining, and structure predicates has been patched
2767 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
2768 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
2770 * Missing ordinary arguments in a macro call are now detected even
2771 when the macro lambda list contains &KEY or &REST.
2772 * The debugger no longer complains about encountering the top of the
2773 stack when you type "FRAME 0" to explicitly instruct it to go to
2774 the top of the stack. And it now prints the frame you request even
2775 if it's the current frame (instead of saying "You are here.").
2776 * As specified by ANSI, the system now always prints keywords
2777 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
2779 * The default initial SIZE of HASH-TABLEs is now smaller.
2780 * Type information from CLOS class dispatch is now propagated
2781 into DEFMETHOD bodies, so that e.g.
2782 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2784 is now basically equivalent to
2785 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2786 (DECLARE (TYPE SINGLE-FLOAT X))
2788 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
2789 operation, without having to do run-time type dispatch.
2790 * The macroexpansion of DEFMETHOD has been tweaked so that it has
2791 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
2792 * Since I don't seem to be making big file reorganizations very often
2793 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
2794 is overflowing my ability to conveniently back them up), I've finally
2795 checked the system into CVS. (The CVS repository is on my home system,
2796 not at SourceForge -- putting it on SourceForge might come later.)
2797 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
2798 high-level GC-NOTIFY-FOO functions send their output. (There's
2799 still very little control of where low-level verbose GC functions
2800 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
2801 less than it used to -- the GC-NOTIFY-FOO functions are now under
2802 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
2803 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
2804 in only one place in the source code, and propagates it automatically
2805 everywhere that it's needed. Thus e.g. when I bump the version from
2806 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
2807 * The C source files now include boilerplate legalese and documentation
2808 at the head of each file (just as the Lisp source files already did).
2809 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
2810 to his page will be replaced with a link to his new CLiki service.
2812 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
2814 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
2815 * The build process now looks for GNU make under the default name "gmake",
2816 instead of "make" as it used to. If GNU make is not available as "gmake"
2817 on your system, you can change this default behavior by setting the
2818 GNUMAKE environment variable.
2819 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
2820 can build without error under CMU CL.
2822 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
2824 * There is now a partial SBCL user manual (with some new text and some
2825 text cribbed from the CMU CL manual).
2826 * The beginnings of a profiler have been added (starting with the
2827 CMU CL profiler and simplifying and cleaning up). Eventually the
2828 main interface should be through the TRACE macro, but for now,
2829 it's still accessed through vaguely CMU-CL-style functions and macros
2830 exported from the package SB-PROFILE.
2831 * Some problems left over from porting CMU CL to the new
2832 cross-compilation bootstrap process have been cleaned up:
2833 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
2834 instead of SB!XC:DEFMACRO, compounded by an oversight on my
2835 part when getting rid of the compiler *BACKEND* stuff.)
2836 ** The value of *NULL-TYPE* was screwed up, because it was
2837 being initialized before the type system knew the final
2838 definition of the 'NULL type. This screwed up several key
2839 optimizations in the compiler, causing inefficiency in all sorts
2840 of places. (I found it because I wanted to understand why
2841 GET-INTERNAL-RUN-TIME was consing.)
2842 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
2843 PROCLAIM FTYPE information. Unfortunately this broke binary
2844 compatibility again, since now the forms output by DEFGENERIC
2845 to refer to functions which didn't exist in 0.6.3.
2846 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
2847 can use the new (as of 0.6.3) transform for SOME into MAP into
2849 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
2850 values to (INTEGER 0 1000000), so that the time code will no longer
2851 occasionally get blown up by Linux returning 1000000 microseconds
2852 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
2853 its output conform to the ANSI spec. (Alas, this makes its output
2854 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
2855 * A full call to MAP NIL with a single sequence argument no longer conses.
2856 * fixes to problems pointed out by Martin Atzmueller:
2857 * The manual page no longer talks about multiprocessing as though
2858 it were currently supported.
2859 * The ILISP support patches have been removed from the distribution,
2860 because as of version 5.10.1, ILISP now supports SBCL without us
2861 having to maintain patches.
2862 * added a modified version of Raymond Toy's recent CMU CL patch for
2863 EQUALP comparison of HASH-TABLE
2865 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
2867 * The system still can't cross-compile itself with
2868 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
2869 entails), but at least it can compile more of itself that way
2870 than it used to be able to, and various buglets which were uncovered
2871 by trying to cross-compile itself that way have now been fixed.
2872 * This release breaks binary compatibility again. This time
2873 at least I've incremented the FASL file format version to 2, so that the
2874 problem can be detected reliably instead of just causing weird errors.
2875 * various new style warnings:
2876 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
2877 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
2878 ** using the lexical binding of a variable named in the *FOO* style
2879 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
2880 as specified by ANSI.
2881 * *RANDOM-STATE* is no longer automatically initialized from
2882 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
2883 default behavior of the system is to repeat its behavior every time
2884 it's run. If you'd like to change this behavior, you can always
2885 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
2886 old convention there was no comparably easy way to get the system to
2887 repeat its behavior every time it was run.
2888 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
2889 FTYPE declarations has been removed, in favor of their ANSI
2890 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
2891 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
2892 the types of their sequence arguments can be determined at compile time.
2893 This is done through a new open code expansion for MAP which eliminates
2894 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
2895 argument types can be determined at compile time.
2896 * The optimizer now transforms COERCE into an identity operation when it
2897 can prove that the coerced object is already of the correct type. (This
2898 can be a win for machine generated code, including the output of other
2899 optimization transforms, such as the MAP transform above.)
2900 * Credit information has been moved from source file headers into CREDITS.
2901 * Source file headers have been made more standard.
2902 * The CASE macro now compiles without complaining even when it has
2905 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
2907 * (Note that the way that the PCL macroexpansions were rewritten
2908 to accommodate the change in DEFGENERIC below breaks binary
2909 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
2910 not run under sbcl-0.6.2. Once we get out of alpha releases,
2911 i.e. hit release 1.0.0, we'll probably try to maintain binary
2912 compatibility between maintenance releases, e.g. between sbcl-1.4.3
2913 and sbcl-1.4.4. Until then, however, it might be fairly common
2914 for maintenance releases to break binary compatibility.)
2915 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
2917 * The reporting of unhandled signals has been changed to print some
2918 explanatory text as well as the report form. (Previously only
2919 the report form was printed.)
2920 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
2921 it defines, so that the compiler no longer issues undefined function
2922 warnings for compiled-but-not-yet-loaded generic functions.
2923 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
2924 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
2925 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
2926 section of the ANSI spec are supported.
2927 * The "" nickname for the "KEYWORD" package has been removed.
2928 The reader still handles symbol tokens which begin with a package marker
2929 as keywords, but it doesn't expose its mechanism for doing so in the
2930 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
2931 * The system now issues STYLE-WARNINGs for contradictory TYPE
2932 proclamations. (Warnings for contradictory FTYPE proclamations would
2933 be nice too, but those can't be done usefully unless the type system
2934 is made smarter about FUNCTION types.)
2935 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
2936 systematized, so that "*target-*.lisp is supposed to exist only on the
2937 target and imply that there's a related file which exists on the
2938 host, and *host-*.lisp is supposed to exist only on the host and imply
2939 that there's a related file which exists on the target. This involves a
2940 lot of renaming. Hopefully the acute confusion caused by the renaming
2941 will be justified by the reduction in chronic confusion..
2942 ** runtime-type.lisp -> early-target-type.lisp
2943 ** target-type.lisp -> late-target-type.lisp
2944 ** early-host-format.lisp -> early-format.lisp
2945 ** late-host-format.lisp -> late-format.lisp
2946 ** host-error.lisp -> misc-error.lisp
2947 ** early-error.lisp -> early-target-error.lisp
2948 ** late-error.lisp -> late-target-error.lisp
2949 ** host-defboot.lisp -> early-defboot.lisp
2950 ** code/misc.lisp -> code/target-misc.lisp
2951 ** code/host-misc.lisp -> code/misc.lisp
2952 ** code/numbers.lisp -> code/target-numbers.lisp
2953 ** code/early-numbers.lisp -> numbers.lisp
2954 ** early-host-type.lisp -> early-type.lisp
2955 ** late-host-type.lisp -> late-type.lisp
2956 ** host-typep.lisp -> typep.lisp
2957 ** load.lisp -> target-load.lisp
2958 ** host-load.lisp -> load.lisp
2959 ** host-disassem.lisp -> disassem.lisp
2960 ** host-insts.lisp -> insts.lisp
2961 ** byte-comp.lisp -> target-byte-comp.lisp
2962 ** host-byte-comp.lisp -> byte-comp.lisp
2963 ** host-signal.lisp -> signal.lisp
2964 ** host-defstruct.lisp -> defstruct.lisp
2965 ** late-target-type.lisp -> deftypes-for-target.lisp
2966 Furthermore, several other previously target-only files foo.lisp (e.g.
2967 hash-table.lisp and random.lisp) have been split into a target-and-host
2968 foo.lisp file and a target-only target-foo.lisp file, with their key type
2969 definitions in the target-and-host part, so that the cross-compiler will
2970 know more about target types.
2971 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
2972 gone away. In their place are various *BACKEND-FOO* variables
2973 corresponding to the slots of the old structure.
2974 * A bug which caused the SB-COLD bootstrap-time package to be propagated
2975 into the target SBCL has been fixed.
2976 * The chill.lisp system for loading cold code into a running SBCL
2978 * Support for the CMU CL "scavenger hook" extension has been removed.
2979 (It was undocumented and unused in the CMU CL sources that SBCL was
2980 derived from, and stale in sbcl-0.6.1.)
2981 * Various errors in the cross-compiler type system were detected
2982 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
2983 (enabling various consistency checks). Many of them were fixed,
2984 but some hard problems remain, so the compiler is back to
2985 running without *TYPE-SYSTEM-INITIALIZED* for now.
2986 * As part of the cross-compiler type system cleanup, I implemented
2987 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
2988 * I have started adding UNCROSS calls throughout the type system
2989 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
2990 on cross-compiler input files will be able to go away, and various
2992 * CONSTANTP now returns true for quoted forms (as explicitly required
2995 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
2997 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
2998 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
2999 (MAKE-LIST -1). In the longer term, it ought to become true
3000 that declarations are assertions even at SAFETY 1. For now, it's not
3001 quite true even at SAFETY 3, but it's at least more nearly true..
3002 (Note that this change seems to increases the size of the system by
3003 O(5%) and to decrease the speed of the compiler by 20% or more.)
3004 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3005 for the problem of printing dozens of lines of distracting information
3006 about low-level system machinery as part of the top stack frame
3007 on entry to the debugger when an undefined function was called.
3008 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3009 is not reset to COMMON-LISP-USER.
3010 * Compilation of stuff related to dyncount.lisp has been made conditional
3011 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3012 smaller. The various dyncount-related symbols have been moved into
3013 a new "SB-DYNCOUNT" package.
3014 * tty-inspect.lisp has been renamed to inspect.lisp.
3015 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3016 feature has gone away. (When we eventually port to other flavors of
3017 libc and/or Unix, we'll try to make the differences between flavors
3018 invisible at the user level.)
3019 * Various other *FEATURES* tags, and/or their associated conditionals,
3020 have been removed if obsolescent, or given better documentation, or
3021 sometimes given more-mnemonic names.
3023 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3025 * tidied up "make.sh" script
3026 * tidied up system directory structure
3027 * better "clean.sh" behavior
3028 * added doc/FOR-CMUCL-DEVELOPERS
3029 * many many small tweaks to output format, e.g. removing possibly-confusing
3030 trailing #\. character in DESCRIBE-INSTANCE
3031 * (EQUALP #\A 'A) no longer signals an error.
3032 * new hashing code, including EQUALP hashing
3033 * tidied up Lisp initialization and toplevel
3034 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3035 * command line argument processing
3036 * added POSIX-GETENV function to deal with Unix-ish environment variables
3037 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3038 terminating SBCL on EOF
3039 * non-verbose GC by default
3040 * There is no more "sbcl" shell script; the sbcl file is now the C
3041 runtime executable (just like CMU CL).
3042 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3044 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3045 symbol and package information as Lisp native symbol and package objects
3046 instead of strings naming symbols and strings naming packages. This way,
3047 whenever packages are renamed (as in warm init), debug information is
3048 transformed along with everything else.
3049 * tweaked the optimization policy declarations which control the building
3050 of SBCL itself. Now, among other things, the system no longer saves
3051 source location debugging information. (This helps two problems at once
3052 by reducing SBCL size and by keeping SBCL from trying to look for its
3053 sources -- which may not exist -- when reporting errors.)
3054 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3055 debugging and testing purposes
3056 * cleaned up printing, making the printer call PRINT-OBJECT for
3057 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3058 methods, giving nearly-ANSI behavior
3059 * converted almost all special variables to use *FOO* naming convention
3060 * deleted PARSE-TIME functionality, since it can be done portably
3061 * moved some files out of cold init into warm init
3062 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3064 * regularized formatting of source files
3065 * added an install.sh script
3066 * fixed ridiculous memory usage of cross-compiler by making
3067 compiler/alloc.lisp not try to do pooling unless it can hook
3068 itself into the GC of the cross-compilation host. Now the system
3069 builds nicely on my old laptop.
3070 * added :SB-ALLOC in target-features.lisp-expr
3071 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3072 was not implemented)
3073 * re-did condition handling and note reporting in the compiler. Notes
3074 are no longer handled by signalling conditions. Style warnings
3075 and warnings are handled more correctly and reported in such a way
3076 that it's easy to find one or the other in your output (so that you
3077 can e.g. figure out which of many problems caused COMPILE-FILE to
3079 * changed the severity of several compiler warnings from full WARNING
3080 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3081 compiler note reporting so that it doesn't use the condition system
3082 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3083 COMPILE-FILE command)
3084 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3085 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3086 no longer supported, since their implementation was deeply intertwingled
3087 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3088 * removed bogus "support" for compiler macros named (SETF FOO), and
3089 removed the compiler macro for SETF INFO (but only after making a fool
3090 of myself on the cmucl-imp mailing list by posting a bogus patch for
3091 DEFINE-COMPILER-MACRO..)
3092 * Compiled files containing forms which have side effects on the Lisp
3093 reader (such as DEFPACKAGE forms) are now handled more correctly.
3094 (Compiler queuing of top level lambdas has been suppressed by setting
3095 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3096 * deleted various currently-unused source files, e.g. gengc.lisp. They
3097 may be added back at some point e.g. when porting to other architectures,
3098 but until they are it's distracting to distribute them and to try to
3100 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3101 there were so many of them they're just distractions, and UNCROSS is
3102 known to be able to handle the current sources
3103 * moved PROFILE functionality into TRACE, so that it will be clear
3104 how the wrapping and unwrapping of functions when you profile them
3105 interacts with the wrapping and unwrapping of functions when you
3106 trace them. (Actually, the functionality isn't there yet, but at least
3107 the interface specification is there. Hopefully, the functionality will
3108 arrive with some future maintenance release.)
3109 * removed host-oops.lisp
3110 * changed signature of QUIT function to allow UNIX-CODE argument
3111 * fixed READ-SEQUENCE bug
3112 * tweaked verbose GC output so that it looks more like the progress
3113 output that ANSI specifies for functions like LOAD
3114 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
3115 * added <http://sbcl.sourceforge.com> to the banner information printed by
projects / sbcl.git / blob