1 changes in sbcl-0.9.0 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 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
7 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
8 inoperational for a while now) has been completely removed.
9 * null lexical environments are now printed as #<NULL-LEXENV>,
10 significantly reducing the amount of clutter in typical backtraces.
11 * documentation on weak pointers, finalization, and after GC hooks
12 has been added to the manual.
13 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
14 as other specialized array types, is much faster. SUBSEQ and
15 COPY-SEQ on such arrays have also been sped up.
16 * optimization: EQL is now more efficient when at least other argument
17 is known to be of type (OR FIXNUM (NOT NUMBER)).
18 * fixed bug: the runtime is now less vulnerable to changes in the
19 size of the SBCL object on OS X, and virtual memory is reserved for
20 all spaces that need to be at a fixed address.
21 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
22 * fixed bug: finalizers and after GC hooks that cause consing are now
24 * fixed bug: compiler error messages and summaries are now printed to
25 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
26 * fixed inference of the upper bound of an iteration variable.
27 (reported by Rajat Datta).
28 * fixed bug 211e: calling local functions with duplicated constant
29 keyword argument no longer causes a bogus style warning about an
31 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
32 ftype declaration to be disregarded. (reported by Dave Roberts)
33 * fixed bug 373: caused by erronous compilation of references to alien
34 variables in the runtime on ppc/darwin.
35 * fixed bug 376: CONJUGATE type deriver.
36 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
37 (reported by Baughn on #lisp)
38 * a cross-compiler bug on non-x86 platforms has been identified and
39 fixed. (thanks to Bruno Haible)
40 * improvements to the MIPS runtime code for increased stability.
41 (thanks to Thiemo Seufer)
42 * increased the maximimum compact environment size to allow
43 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
44 * partial workaround for bug 135: don't name the function we're
45 calling for hairy cases of EVAL, so as not to accumulate one environment
46 entry per call to EVAL. (reported by Kevin Reid)
47 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
48 * optimization: type testing for non-vector arrays should be faster.
49 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
51 * bug fix: setting 31st element of a bit vector to zero did not work
53 * bug fix: redefining a class definition which failed due to a
54 previous accessor / function clash now works (but see BUGS entry
55 #380 for more problems in this area). (thanks to Zach Beane)
56 * the long form of DEFINE-METHOD-COMBINATION disables method group
57 checking when given a single method group with pattern *. (thanks
59 * on x86 compiler supports stack allocation of results of simple
60 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
61 * support for building and running on Mac OS X 10.4 "Tiger" has been added
62 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
63 * fixed some bugs related to Unicode integration:
64 ** the restarts for recovering from input and output encoding
65 errors only appear when there is in fact such an error to
67 * fixed some bugs revealed by Paul Dietz' test suite:
68 ** MISC.549 and similar: late transformation of unsafe type
69 assertions into derived types caused unexpected code
71 ** SCALE-FLOAT type deriver is less wrong.
72 ** type derivers for EXP, LOG and similar functions compute result
73 types for complex arguments better.
74 ** (MISC.563) CONJUGATE type deriver works for very restricted
76 ** out-of-line type testers for character strings are available.
77 ** EQUAL compiler transform understands specialness of objects
79 ** accessing double-floats stored on the stack now works on x86-64.
80 ** debugger internals could sometimes create invalid lispobjs,
81 resulting in GC crashes.
82 ** MISC.548: type check weakening can convert required type into
84 ** initialization forms for bindings are not in scope of free special
87 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
88 * incompatible change: thread support for non-NPTL systems has
89 been removed - locking is buggy and unreliable. A threaded
90 SBCL build will now warn at startup and refuse to create
91 new threads, unless futex support is detected in the kernel
92 * incompatible change: the top level REPL now has only an ABORT
93 restart associated with it, not TOPLEVEL and ABORT as it used to.
94 TOP and TOPLEVEL are now available as debugger commands for
95 returning to the top level.
96 * incompatible change: forms evaluated in the REPL now use the
97 global optimization policy.
98 * incompatible change: user- and system-initialization files are
99 no longer processed with LOAD, but by READ and EVAL; hence the
100 global optimization policy, startup package, readtable, etc,
102 * The .fasl file format number has been incremented because of
103 various incompatible changes.
104 * internal entry point details and argument counts no longer appear
105 in backtraces unless explicitly requested by setting
106 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
107 * built-in and standard functions no longer have names like "top
108 level local call to FOO".
109 * fixed bug 32: functions defined in non-null lexical environments
110 now have more legible printed representation
111 * fixed bug 33: functions defined in non-null lexical environemnts
112 are now more amenable to inspection by INSPECT.
113 * workaround for bug 354: XEPs no longer appear in backtraces unless
114 explicitly requested.
115 * fixed bug: receiving the signal which results from attempting to
116 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
117 SIGBUS on other *BSDs) on architectures where the C stack is also
118 the Lisp stack (x86 and x86-64) from foreign code no longer leads
119 to debugger confusion or wild instability. (reported by Cheuksan
121 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
122 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
123 (reported by Lutz Euler)
124 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
125 compiled code. (reported by Paul Dietz)
126 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
127 specialized parameter to a method to something that is not TYPEP
128 the specializer is now possible.
129 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
130 face of package deletion.
131 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
132 pathname. (reported by David Tolpin on c.l.l)
133 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
134 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
135 STRING-STREAM and FILE-STREAM, respectively.
136 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
137 than previously; in addition, its test suite is now run on build.
138 (thanks to Luke Gorrie)
139 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
140 * optimization: added a immediate representation for single-floats
142 * fixed some bugs revealed by Paul Dietz' test suite:
143 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
144 ** attempting to create a package with a colliding nickname causes
145 correctable errors to be signalled.
146 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
147 ** several x86-64 backend bugs related to sign-extension of immediate
150 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
151 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
152 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
154 * fixed loading of multiply forward-referenced layouts.
155 (thanks to Cheuksan Wang)
156 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
157 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
158 (see COMPILE-FILE documentation for details of :PRINT option)
159 * fixed bugs 19 and 317: fixed-format floating point printing is
160 more accurate. This also fixes a bug reported by Adam Warner
161 related to the ~@F format directive.
162 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
164 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
165 dispatch table if the from-char is a dispatch macro character.
166 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
167 by the wordsize no longer ignore the last word. (reported by Lutz
169 * fixed bug in type checking of dynamic-extent variables. (reported
171 * optimization: sequence traversal functions use their freedom to
172 coerce function designators to functions.
173 * optimization: code with many calls to CLOS methods specialized on
174 CLOS classes has had redundant type checks removed.
175 * optimization: added declarations to speed up operations that access
176 the internal character database (for example STRING-UPCASE)
177 * optimization: comparison operations between floats and sufficiently small
178 fixnums no longer create extra rationals
179 * fixed some bugs related to Unicode integration:
180 ** portions of multibyte characters at the end of buffers for
181 character-based file input are correctly transferred to the
182 start of the buffer at the next read.
183 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
184 passing it through to OPEN.
185 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
186 argument given to internal calls to OPEN.
187 ** the built-in comment readers (introduced by character sequences
188 ";" and "#|") are more forgiving to encoding errors; they will
189 STYLE-WARN and then attempt to resync the stream at a character
190 boundary. (thanks to Teemu Kalvas)
191 * fixed some bugs in the x86-64 port:
192 ** Negative short int return values from c-calls are sign-extended
194 ** The stack is aligned to 16-bytes for c-calls, as required by
195 the ABI. (thanks to Cheuksan Wang)
196 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
197 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
198 for enums. (thanks to Vincent Arkesteijn)
199 ** Multiple small optimizations and bugfixes for floating point
201 * fixed some bugs revealed by Paul Dietz' test suite:
202 ** Space, Tab, Linefeed, Return and Page have the invalid
203 secondary constituent character trait.
204 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
206 ** WITH-INPUT-FROM-STRING should only update the index place on
208 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
210 ** Bit-array operations (BIT-AND and similar) worked incorrectly
211 with one-dimensional arrays with fill pointers.
212 ** TYPE-OF failed on a complex with an integer realpart and a
214 ** compiler failure during type inference for the code of form
215 (IF (EQL X (THE ...)) ...) (MISC.535).
217 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
218 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
219 platform. The port supports 61-bit fixnums, large memory spaces
220 and reloading shared object files.
221 * enhancement: saving cores with foreign code loaded is now
222 supported on ppc/Darwin in addition to the previously supported
224 * enhancement: the statistical profiler now walks deeper into the
225 call stack for more meaningful call-graphs and accrued time
226 reports (x86/x86-64 only). It also now reports time spent in
228 * enhancement: it is now possible to trace most individual methods
229 of a generic function in addition to tracing the generic function
231 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
233 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
234 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
235 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
236 produces an error. (thanks to Vincent Arkesteijn)
237 * bug fix: NAMESTRING on pathnames with :WILD components in their
238 directories works correctly. (thanks to Artem V. Andreev)
239 * fixed bug 125: compiler preserves identity of closures. (reported
241 * bug fixed: functions with &REST arguments sometimes failed with
242 "Undefined function" when compiled with (DEBUG 3). (reported by
244 * bug fix: overflow during compiling of setting element of a bit
245 vector with constant index and value. (reported by Timmy Douglas)
246 * build fix: fixed the dependence on *LOAD-PATHNAME* and
247 *COMPILE-FILE-PATHNAME* being absolute pathnames.
248 * on x86 compiler partially supports stack allocation of dynamic-extent
250 * GO and RETURN-FROM do not check the extent of their exit points
251 when compiled with SAFETY 0.
252 * fixed some bugs related to Unicode integration:
253 ** encoding and decoding errors are now much more robustly
254 handled; it should now be possible to recover even from invalid
255 input or output to the terminal. (thanks to Teemu Kalvas)
256 ** provided a first cut at implementing STRING-TO-OCTETS and
257 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
258 ** altered the SB-MD5 contributed module slightly, changing the
259 interface just enough for it to be supportable for builds where
260 lisp characters are not eight bits.
261 * fixed some bugs revealed by Paul Dietz' test suite:
262 ** the FORMATTER-generated functions for ~V[ conditionals require
263 the correct number of arguments.
264 ** READ-FROM-STRING returns the mandated second value when applied
265 to displaced strings.
266 ** the #\Rubout and #\Backspace characters are treated as invalid
267 constituent characters by the tokenizer.
269 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
270 * new feature: reloading changed shared object files with
271 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
272 * new feature: references to foreign variables and functions
273 can now be compiled and loaded before the corresponding shared
274 object file is loaded, as long as the foreign definitions are
275 available at runtime.
276 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
277 supported. (thanks to Dan Debertin)
278 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
279 just keywords. (thanks to Vincent Arkesteijn)
280 * fixed bug #331: structure-class instances corresponding to
281 DEFSTRUCT forms are now created eagerly.
282 * fixed bug #345: backtraces from calls to undefined functions work
283 on x86 as well. Related bug #61 is now also partially fixed on x86
284 (backtraces from throws to unknown catch tags.)
285 * bug fix: lambda-list parsing is now stricter vrt. order and number
286 of lambda-list keywords.
287 * bug fix: as specified by AMOP, an error is signalled if a
288 class-option appears multiple times in a DEFCLASS form. (reported
290 * bug fix: RANDOM can be compiled when the compiler derives the type
291 of its numeric argument as a disjoint set of small integers.
292 (reported by Paul Dietz)
293 * bug fix: starting a core saved with shared objects loaded when
294 those objects are not available no longer causes threaded SBCL to
295 hang. (reported by Sean Ross)
296 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
298 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
299 argument, which must always be NIL. (reported by Kalle Niemitalo)
300 * bug fix: printing 1.0d+23 no longer results in an error.
301 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
302 * bug fix: structure slot setters preserve evaluation order. (thanks
304 * fixed some bugs related to Unicode integration:
305 ** RUN-PROGRAM can allow its child to take input from a Lisp
306 stream. (reported by Stefan Scholl)
307 ** ASDF-INSTALL successfully downloads .tar.gz files in all
308 locales. (reported by Ken Causey)
309 * fixed some bugs revealed by Paul Dietz' test suite:
310 ** INCF, DECF and REMF evaluate their place form as specified in
312 ** FORMATTER expands ~{ ~} iteration directives with V or #
313 parameters correctly.
314 ** FORMATTER deals with the ~@[ ~] conditional directive where the
315 consequent uses no arguments correctly.
316 ** the system has a partial understanding of the (COMPLEX RATIO)
318 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
321 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
322 * new feature: a build-time option (controlled by the :SB-UNICODE
323 keyword feature, enabled by default) for building the system with
324 support for the entire 21-bit character space defined by the
326 * new feature: the system now has rudimentary external-format
327 support; the primary user-visible change at this time is that
328 characters with the high bit set (such as lower-case-e-acute) will
329 print correctly to a terminal in a UTF-8 environment.
330 * minor incompatible change: BASE-CHAR no longer names a class;
331 however, CHARACTER continues to do so, as required by ANSI.
332 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
333 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
334 has been moved to the SB-EXT package (temporarily re-exported from
336 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
337 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
339 * fixed bug #351: better error-handlind and reporting for malformed
341 * fixed bug #350: bignum-printing is now more memory-efficient,
342 allowing printing of very large bignums, eg. (expt 2 10000000).
343 (reported by Bruno Haible)
344 * fixed bug #302: better primitive-type selection for intersection
346 * fixed bug #308: non-graphic characters now all have names, as
347 required. (reported by Bruno Haible)
348 * bug fix: redefining a class with different superclasses now correctly
349 removes it from the direct-subclasses of its previous superclasses.
350 (reported by David Morse)
351 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
352 new value now works. (reported by Bruno Haible)
353 * bug fix: correct canonicalization of multiple non-standard slot
354 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
355 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
356 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
357 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
358 now exists, an signals an error.
359 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
360 during macroexpansion for non-iteration variables as well. (reported
361 by Bruno Haible for CMUCL)
362 * bug fix: Cyclic structures and unprintable objects in compiler
363 messages no longer cause errors. (reported by Bruno Haible)
364 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
365 and READ-FROM-STRING all now return a primary value of NIL if
366 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
367 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
368 (reported by Bruno Haible for CMUCL)
369 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
370 do not designate a condition. (reported by Bruno Haible for
372 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
373 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
374 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
375 permitting resolution in favour of any of the conflicting symbols.
376 (reported by Bruno Haible for CMUCL)
377 * bug fix: EQUAL compiler optimizations is less aggressive on
378 strings which can potentially compare true despite having distinct
379 specialized array element types.
380 * bug fix: unit enumerations can be defined without dividing by
381 zero. (thanks to Vincent Arkesteijn)
382 * FORMAT compile-time argument count checking has been enhanced.
383 (report from Bruno Haible for CMUCL)
384 * a partial workaround for the bug 262: the compiler does not try to
385 inline-expand a local function doing RETURN-FROM from a deleted
386 BLOCK. (thanks to Peter Denno for the bug report and to David
387 Wragg for the simple test case)
388 * fixed some bugs revealed by Paul Dietz' test suite:
389 ** RENAME-PACKAGE allows all package designators as new package
391 ** constraint propagation and lambda variable substitution are
392 more cautious in dealing with partially deleted code.
393 ** compiler sometimes lost reoptimization passes.
394 ** CERROR, given a condition as condition designator, passes its
395 remaining arguments to the continue format control without
397 ** Case-altering FORMAT directives work correctly on non-ASCII
399 ** The REAL type specifier handles bounds outside the floating
400 point ranges without signalling FLOATING-POINT-OVERFLOW.
401 ** Functions with IR1-transformations can create intercomponent
402 references to global functions.
403 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
405 ** FORMAT ~R treats a nil value for its first parameter correctly.
407 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
408 * enhancement: saving cores with foreign code loaded is now
409 supported on x86/NetBSD and sparc/Linux in addition to the previously
411 * bug fix: on some platforms repeated installations caused multiple
412 copies of HTML documentation to be installed -- should not happen
413 any more. (reported by Stefan Scholl)
414 * bug fix: parsing self-recursive alien record types multiple times
415 no longer causes infinite recursion. (reported by Thomas F. Burdick,
416 original patch by Helmut Eller for CMUCL)
417 * bug fix: stack-exhaustion detection works now on NetBSD as well.
418 (thanks to Richard Kreuter)
419 * bug fix: defining classes whose accessors are methods on existing
420 generic functions in other (locked) packages no longer signals
421 bogus package lock violations. (reported by François-René Rideau)
422 * bug fix: special variables as DEFMETHOD parameters no longer have
423 associated bogus type declarations. (reported by David Wragg and
425 * bug fix: read-write consistency on streams of element-type
426 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
427 * bug fix: redefiniton of the only method of a generic function with
428 no DEFGENERIC no longer emits a full WARNING. In addition,
429 redefinition of generic functions with no DEFGENERIC to an
430 incompatible lambda list now signals an error. (thanks to Zach
432 * bug fix: DEFGENERIC now works even when there's a function of the
433 same name in an enclosing lexical environment. (thanks to Zach
435 * fixed compiler failure, caused by instrumenting code during
436 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
437 * optimization: added loop analysis and improved register allocation
438 * fixed some bugs revealed by Paul Dietz' test suite:
439 ** POSITION on displaced vectors with non-zero displacement
440 returns the right answer.
441 ** (SIMPLE-STRING) is a valid type specifier for sequence
443 ** *PRINT-LEVEL* handling for slotless structures is pedantically
445 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
446 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
448 ** The justification version of the FORMAT ~< directive treats
449 non-zero minpad parameter correctly.
451 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
452 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
453 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
454 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
455 the supported interface.
456 * new feature: Single-stepping of code compiled with DEBUG 2 or
457 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
458 * new feature: saving cores with foreign code loaded is now
459 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
460 Timothy Moore's work for CMUCL)
461 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
462 parameters to * instead of NIL if no initform is supplied.
463 (reported by Johan Bockgaard)
464 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
465 correctly when FUNCALL appears as the car of the form. Note:
466 despite this FUNCALL forms are not currently subject to
467 compiler-macro expansion. (port of Raymond Toy's fix for the
468 same from CMUCL, reported by Johan Bockgaard)
469 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
470 (thanks for Teemu Kalvas)
471 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
472 case instead of terminating the iteration (thanks for Julian
473 Squires, Sean Champ and Raymond Toy)
474 * bug fix: incorrect expansion of defgeneric that caused a style
475 warning. (thanks for Zach Beane)
476 * bug fix: slot accessor effective method computation works properly
477 for classes with multiple non-standard applicable methods on
478 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
479 * on x86 compiler supports stack allocation of results of LIST and
480 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
481 CMUCL implementation by Gerd Moellmann)
482 * fixed some bugs revealed by Paul Dietz' test suite:
483 ** FORMAT strings with both the ~<~:;~> form of the justification
484 directive and pretty-printing directives cause an error.
486 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
487 * incompatible change: the internal functions
488 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
489 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
490 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
491 instead of the old functions.
492 * new feature: on platforms where "dladdr" is available foreign
493 function names now appear in backtraces. (based on Helmut Eller's
495 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
496 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
498 * documentation: ASDF manual is now distributed with SBCL.
499 * bug fix: SBCL can now load its contributed modules with REQUIRE
500 even if the system-provided entries have been removed from
501 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
503 * bug fix: backtraces involving undefined functions or assembly
504 routines are more informative. (thanks to Brian Downing)
505 * bug fix: mutually referent alien structures now work correctly.
506 (reported by Rick Taube)
507 * bug fix: structures defined by WITH-ALIEN can be referred to
508 within other definitions in the same WITH-ALIEN.
509 * bug fix: division operators (MOD, TRUNCATE and the like) with
510 constant zero divisors and integer dividends no longer generate
512 * bug fix: provide default methods for INPUT-STREAM-P and
513 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
514 * bug fix: improve the detection and resolution of MOP metacycles
515 (where effective method computation depends on the generic function
516 having its effective method computed). (reported by Bruno Haible)
517 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
518 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
519 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
520 * bug fix: pathnames with relative directory components can be
521 represented relative to default pathnames.
522 * optimization: in taking the GCD of bignums, reduce the two bignums
523 to approximately the same size (using Euclid's algorithm) before
524 applying the more sophisticated binary GCD. (thanks to Juho
526 * optimization: COUNT on bitvectors now operates word-at-a-time.
527 * optimization: ASH with a positive, but not necessarily constant,
528 (leftwards) shift, when in a modular context, is compiled to a
530 * fixed some bugs revealed by Paul Dietz' test suite:
531 ** FORMAT variable parameters ("~V<char>") are defaulted properly
532 if the corresponding argument is NIL.
533 ** FORMAT directives accepting a minpad parameter treat negative
535 ** literal commas as character parameters to FORMAT directives are
537 ** literal spaces directly after ~<Newline> directives within a
538 format-logical-block (~:< ~@:>) do not induce :FILL-style
539 conditional newlines.
540 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
541 as specified: it no longer includes conditional newlines).
542 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
544 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
545 :PER-LINE-PREFIX argument does not evaluate to a string.
547 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
548 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
549 the manual for details; for now, package locks can be disabled by
550 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
551 if no major problems are found then it is likely that they will be
552 compiled in unconditionally.
553 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
554 unsupported operators on all platforms. To load a shared library
555 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
556 object file, link it into a shared library outside of SBCL and
557 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
559 * bug workaround: ROOM T and the GC were not working together
560 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
561 reporting facility aren't preserved. That reporting has been
562 disabled, so now until and unless someone figures out how to make it
563 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
564 * minor incompatible change: as threatened around sbcl-0.8.0, the
565 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
566 The symbols are also exported from SB-PCL for backwards
567 compatibility, but more so than before SB-PCL should be treated as
568 an implementation-internal package.
569 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
571 * the SB-SPROF contrib now works on (most) non-x86 architectures.
572 It is known as of this release not to work on the Alpha, however.
573 * fixed bug #167: errors signalled due to illegal syntax in method
574 bodies are now more legible.
575 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
576 designators and can hence be used with TYPEP.
577 * fixed bug #333: CHECK-TYPE now ensures that the type error
578 signalled, if any, has the right object to be accessed by
579 TYPE-ERROR-DATUM. (reported by Tony Martinez)
580 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
581 5.1.2.3 for multiple-value place subforms. (reported by Kalle
583 * fixed bug #334: programmatic addition of slots using specialized
584 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
585 and :ALLOCATION :CLASS slots.
586 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
587 float exponents. (rereported by Peter Seibel)
588 * fixed a bug: #\Space (and other whitespace characters) are no
589 longer considered to be macro characters in standard syntax by
591 * fixed bug: initialization of condition class metaobjects no longer
592 causes an instance of the condition to be created. (reported by
594 * fixed bug: it is now possible to have slots such that
595 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
596 description is neither :INSTANCE nor :CLASS.
597 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
598 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
599 SLOT-VALUE-USING-CLASS), and no longer causes errors with
600 non-standard SLOT-DEFINITION-ALLOCATION values.
601 * fixed bugs: various race conditions handling exiting threads.
602 CL-PPCRE's thread torture test now passes.
603 * fixed arguably-a-bug: GC time proportional to number of threads in
604 system even when most of them are idle
605 * optimization: improved performance of BIT and SBIT on bit-vectors.
606 * .fasl file incompatibility: The fasl file version number has
607 been incremented because of changes associated with package locks.
609 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
610 * minor incompatible change: the system no longer provides
611 optimization hints (conditions which are TYPEP
612 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
613 mode; these hints are still emitted when higher SPEED optimization
615 * new contrib module: a sampling profiler (profiling by statistical
616 sampling, rather than by instrumenting functions) is available as
617 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
618 * the behaviour of the standard function ED is now customizeable by
619 third parties through a hook variable: see ED's documentation
620 string for information on the protocol.
621 * the compiler no longer emits efficiency notes for (FUNCALL X)
622 when the type of X is uncertain under default optimization
624 * fixed bug 276: mutating a binding of a specialized parameter to a
625 method to something that is not TYPEP the specializer is now
627 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
628 exhibit the required behaviour on the x86 platform. (thanks to
629 Peter van Eynde, Eric Marsden and Bruno Haible)
630 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
631 even for difficult arguments. (reported by Peter Graves)
632 * fixed bug 141a: the backquote printer now descends quoted
634 * fixed another bug in backquote printing: no more destructive
635 modification of the form's list structure. (reported by Brian
637 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
638 move between its address being taken and the call to
639 interrupt_thread, fixing a crashing race condition.
640 * the SB-POSIX contrib implementation has been adjusted so that it
641 no longer exhibits ridiculously poor performance when constructing
642 instances corresponding to C structs.
644 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
645 * minor incompatible change: the sb-grovel contrib now treats C
646 structures as alien (in the sense of SB-ALIEN) objects rather than
647 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
648 has implications for memory management of client code
649 (sb-grovel-returned objects must now be manually managed) and for
650 type safety (alien objects now have full types).
651 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
652 used to control emission of compiler diagnostics, rather than the
653 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
654 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
655 quality should be considered deprecated.
656 * install.sh now installs the user manual as well
657 * (not quite a new documentable feature, but worth considering in
658 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
659 beginnings of a semantically meaningful condition hierarchy is
660 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
662 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
663 designator as the defaults argument.
664 * fixed bug: Displaced arrays whose displaced-to array has become
665 too small now cause ARRAY-DIMENSION to signal an error, providing
666 for safer bounds-checking. (reported by Bruno Haible)
667 * fixed bug: DEFCLASS slot definitions with identical :READER and
668 :WRITER names now signal a reasonable error. (reported by Thomas
670 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
672 * fixed bug: Invalid slot specification errors now print correctly.
673 (thanks to Zach Beane)
674 * fixed bug 320: Shared to local slot value transfers in class
675 redefinitions now happen corrently from superclasses as
676 well. (reported by Bruno Haible)
677 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
679 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
680 improper lists correctly. (reported by Bruno Haible)
681 * fixed bug 313: source-transform for <fun-name> was erroneously
682 applied to a call of a value of a variable with name <fun-name>.
683 (reported by Antonio Menezes Leitao)
684 * fixed bug 307: The obsolete instance protocol ensures that
685 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
686 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
687 remove dead unknown-values globs from the middle of the stack.
688 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
689 easier to resume long computations after using *BREAK-ON-SIGNALS*
690 to diagnose and fix failures. (thanks to Nikodemus Siivola)
691 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
692 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
693 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
694 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
695 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
697 * fixed a (fairly theoretical) bug in string printing: if
698 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
699 does not have array-element-type equal to the most general string
701 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
702 function name. (thanks to Nikodemus Siivola)
703 * fixed bug: compile-time format string checker failed on
704 non-closed ~{. (reported by Thomas F Burdick)
705 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
706 don't warn on legal loop code involving more than one aggregate
707 boolean. (thanks to Nikodemus Siivola)
708 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
709 in keyword position to MAKE-PACKAGE was not being reported as
711 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
712 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
714 * fixed bugs 280 and 312: the checking for multiple definitions in a
715 file is less likely to become confused by uses of inline
717 * fixed bug: the #S reader macro performs the keyword coercion
718 specified for slot names. (reported by Kalle Niemitalo)
719 * fixed bug: lambda lists may contain symbols whose names start with
720 & but are not lambda-list-keywords; their occurrence triggers a
722 * fixed bug 321: define-method-combination argument lambda lists do
723 not cause invalid code to be generated when &optional or &aux
724 variables have default values. (reported by Bruno Haible)
725 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
726 have CLOS classes; this appears also to have fixed reported
727 instability in stack exhaustion detection.
728 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
729 MUFFLE-WARNING when no associated restart is present is now
731 * optimization: rearranged the expansion of various defining macros
732 so that each expands into only one top-level form in a
733 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
735 * optimization: used a previously little-used slot in symbols to
736 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
738 * fixed some bugs revealed by Paul Dietz' test suite:
739 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
741 ** Fixed an optimization bug related to inheritance of initforms
742 from local to shared slots.
743 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
744 ** CAST optimizer forgot to flush argument derived type.
745 ** print/read consistency on floats is now orders of magnitude
746 more likely. (thanks also to Bruno Haible for a similar report
748 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
749 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
750 for objects of type REAL. Make it so.
751 ** SXHASH is specified (infelicitously) to respect similarity,
752 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
753 it so. (thanks to Markus Ziegler)
754 ** on the Alpha, the compiler succeeds in compiling functions
755 returning a known number of arguments greater than 63.
756 ** fixed handling of invalid NIL arguments in keyword position
758 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
760 ** provided a readably-printable representation for RANDOM-STATE
762 ** ensured that pathnames, where they have a namestring, always
763 print using #P"..." syntax.
765 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
766 * Support for the forthcoming 2.0 version of the NetBSD kernel
767 running on x86 hardware has been added. (thanks to Perry
768 E. Metzger most immediately, and others for their past work)
769 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
770 current release version; SBCL's OpenBSD support had been broken
771 since about the time of OpenBSD's switch to ELF binary format.)
772 * [placeholder for DX summary]
773 ** user code with &REST lists declared dynamic-extent, under high
774 speed or space and low safety and debug optimization policy.
775 * The manual has been converted to Texinfo format and the debugger
776 chapter from the cmucl manual has been added.
777 * A facility has been added to extract documentation strings from
778 sbcl and store them as Texinfo-formatted snippets for inclusion in
779 the manual (via Texinfo's @include directive)
780 * bug fix: compiler emitted division in optimized DEREF. (thanks for
781 the test case to Dave Roberts)
782 * bug fix: multidimensional simple arrays loaded from FASLs had fill
783 pointers. (reported by Sean Ross)
784 * bug fix: PROFILE output is printed nicely even for large numerical
785 values. (thanks to Zach Beane)
786 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
787 greater than 32 handle EOF correctly.
788 * bug fix: on X86 an immediate argument of the IMUL instruction is
789 correctly printed in disassembly. (thanks to Lutz Euler)
790 * bug fix: class slots in redefined classes preserve their old
791 values. (thanks to Bruno Haible and Nikodemus Siivola)
792 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
793 succeeds. (reported by Marco Baringer)
794 * fixed some bugs revealed by Paul Dietz' test suite:
795 ** READ-SEQUENCE now works on ECHO-STREAMs.
796 ** RATIONALIZE works more according to its specification. (thanks
799 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
800 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
801 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
802 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
803 should matter to you only if you rebind the printer control
804 variables and then find you want different bindings in the
805 debugger than in the ordinary execution of your program.)
806 * The runtime build system has been tweaked to support building
807 (on SPARC/SunOS) using a C compiler which invokes Sun's own
808 assembler and linker. (thanks to Nikodemus Siivola)
809 * Unbound, undefined, undeclared variables now trigger full
810 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
811 more often programmer error than deliberate exploitation of undefined
813 * optimization: the hash algorithm for strings has changed to one
814 that is less vulnerable to spurious collisions. (thanks to Juho
816 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
817 needless bounds checking. (thanks to Juho Snellman)
818 * optimization: implemented multiplication as a modular
819 (UNSIGNED-BYTE 32) operation on the PPC backend.
820 * fixed some bugs revealed by Paul Dietz' test suite:
821 ** ADJUST-ARRAY now copies the datum in a zero rank array if
823 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
824 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
825 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
827 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
829 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
831 ** ECHO-STREAMs no longer attempt to echo the end of file value to
832 their output stream on EOF from read.
833 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
834 have been read to end-of-file.
835 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
837 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
838 description of determination of which consecutive characters
840 ** Printing the "Space" character with escaping on now yields "#\\ ",
841 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
842 ** Reading floating-point numbers with *READ-BASE* set to a number
843 less than 10 works correctly.
844 ** Reading floating-point numbers with *READ-BASE* set to a number
845 more than 10 works correctly.
846 ** Printing with *PRINT-READABLY* targets the standard readtable, not
847 the readtable currently in effect.
849 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
850 * minor incompatible change: parsing of namestrings on a physical
851 (Unix) host has changed; numbers after the final #\. in a
852 namestring are no longer interpreted as a version field. This is
853 intented to be largely invisible to the user, except that the
854 meaning of the namestring "*.*.*" has changed: it now refers to a
855 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
856 should usually be replaced by
857 (make-pathname :name :wild :type :wild :version :wild)
858 with the added benefit that this is more likely to be portable.
859 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
860 option to OPEN now signals an error if the file being opened
861 exists; this may have an impact on existing code.
862 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
863 signals received, on the PowerPC platforms (both Linux and
864 Darwin). (thanks to Pierre Mai for pointing out the location of
866 * several fixes on OS X: The system now builds and runs cleanly on
867 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
868 (thanks to Brian Mastenbrook)
869 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
870 second-resolution: integer multiples of 1/3600 between -24 and 24.
871 (thanks to Vincent Arkesteijn)
872 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
873 type when called with 1 argument; PEEK-CHAR checked type of
874 PEEK-TYPE only after having read first character from a
875 stream. (reported by Peter Graves)
876 * bug fix: the garbage collector now has much better locality
877 behaviour, and in particular no longer treats all memory as being
878 exhausted when many small objects point to each other in a deeply
880 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
881 recognized as being TYPEP their class.
882 * bug fix: the PUSHNEW documentation string has been corrected.
883 (thanks to Vincent Arkesteijn)
884 * bug fix: defaulting of the value for the last of an atypically
885 large number of multiple values being bound was not being
886 performed correctly on the Alpha or PPC platforms
887 * optimization: implemented multiplication as a modular
888 (UNSIGNED-BYTE 32) operation on the x86 backend.
889 * optimization: SEARCH on simple-base-strings can now be open-coded.
890 (see also contrib/compiler-extras.lisp for inspiration for
891 teaching the compiler about the Boyer-Moore algorithm).
892 * value, returned by MAX (and MIN) called with several EQUALP, but
893 not EQL, arguments now does not depend on compiler settings.
894 * fixed some bugs revealed by Paul Dietz' test suite:
895 ** in stack analysis liveness information is propagated from
896 non-local entry points.
897 ** pathwise CAST removing failed when the CAST node did not start
899 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
900 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
902 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
903 host is already defined.
904 ** RENAME-FILE works on streams instead of signalling an internal
906 ** PEEK-CHAR uses the current readtable when determining whether
907 or not a character is whitespace.
908 ** MERGE-PATHNAMES handles the case when the pathname does not
909 specify a name while the default-pathname specifies a version.
910 ** Pathnames now stand a better chance of respecting print/read
912 ** Attempting to use standardized file system operators with a
913 pathname with invalid :DIRECTORY components signals a
915 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
917 ** DIRECTORY on logical pathnames is more correct.
918 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
919 signal a TYPE-ERROR if their argument is not a stream.
920 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
921 designator argument does not designate a stream.
922 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
923 examining the synonym.
924 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
926 ** OPEN and WITH-OPEN-STREAM allow opening streams with
927 element-type larger than ([UN]SIGNED-BYTE 32).
929 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
930 * When built with the :SB-FUTEX feature, threaded builds now take
931 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
932 for faster/more reliable mutex and condition variable support.
933 * Incompatible change (but one you probably shouldn't have been using
934 anyway): the interface and code for arbitrating between multiple
935 threads in the same user session has been redesigned.
936 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
937 error when called without an explicit environment argument.
938 (thanks to Nikodemus Siivola)
939 * bug fix: buffered :DIRECTION :IO streams are less likely to become
940 confused about their position. (thanks to Adam Warner and Gerd
942 * bug fix: Pretty printing backquoted forms with unquotations in the
943 argument list position of various code constructs such as LAMBDA
944 now works correctly. (reported by Paul Dietz)
945 * bug fix: Pretty printing unquotations no longer loses all
946 stream position information.
947 * optimization: performance of string output streams is now less
948 poor for multiple small sequence writes.
949 * optimization: performance of CSUBTYPEP in the presence of complex
950 expressions involving CONS and NOT many times has been improved.
951 (reported by Paul Dietz)
952 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
954 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
955 streams for the REPL, for the debugger, and so on. (thanks to
957 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
958 * fixed some bugs revealed by Paul Dietz' test suite:
959 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
960 is ignored if it is too small, rather than propagating through
961 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
962 ** extremely complex negations of CONS types were not being
963 sufficiently canonicalized, leading to inconsistencies in
965 ** VALUES tranformer lost derived type.
967 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
968 * fixed a bootstrapping bug: the build process no longer assumes
969 that the various BOOLE-related constants have the same value in
970 host and target lisps. (noted by Paul Dietz' test suite on an
971 SBCL binary built from CLISP)
972 * The system can now be dynamically linked on the MIPS platform,
973 which enables dynamic loading of foreign code from Lisp. (thanks
974 to Ralf Baechle for discussions on the MIPS ABI)
975 * The system now records debugging information for its own source
976 files in a filesystem-position-independent manner, relative to
977 the "SYS" logical host.
978 * fixed a compiler bug: MV-LET convertion did not check references
979 to the "max args" entry point. (reported by Brian Downing)
980 * tweaked disassembly notes to be less confident about proclaiming
981 some instruction as an LRA. (thanks to Brian Downing)
982 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
983 now each have their own history, command character, and other
984 characteristics. (thanks to David Lichteblau)
985 * fixed some bugs revealed by Paul Dietz' test suite:
986 ** compiler failure in compiling LOGAND expressions including a
988 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
989 shift greater than 32.
990 ** FLUSH-DEST did not mark blocks for type check regeneration.
991 ** HANDLER-CASE failed to accept declarations in handler clauses
992 in some circumstances.
994 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
995 * New code in contrib/sb-introspect (still probably not entirely
996 stable yet) provides some support for smart Lisp development
997 environments like SLIME.
998 * The conditions signalled for errors occurring when loading .fasl
999 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1000 in a way which should help ASDF recover gracefully.
1001 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1002 stuff has been cleaned up. If you code contrib/ stuff, this might
1003 affect you, and you can look at contrib/README, contrib/STANDARDS,
1004 and/or the 0.8.4.27 diff to check.
1005 * In full calls the compiler now does not generate checks for declared
1006 argument types for all arguments.
1007 * various threading fixes
1008 ** and some experimental patches which didn't make it into
1009 the main tree for this release, but which are shipped in
1010 contrib/experimental-thread.patch as a possible fix for some
1011 failures (deadlock, spinning...) in GC-intensive multithreaded
1013 * fixed PPC build problem (source code incompatibility of different
1014 library versions): added offsetof() hackery which attempts to divine
1015 where glibc maintainers put uc_mcontext today
1016 * fixed bug 282: compiler does not trust type assertions while passing
1017 arguments to a full call.
1018 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1019 &OPTIONAL VALUES type parameter.
1020 * fix bug 214: algorithm for noting rejected templates is now more
1021 similar to that of template seletion. (also reported by rydis on
1023 * fixed bug 141b: printing backquoted information readably and prettily
1024 inserts a space where necessary.
1025 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1026 (CHARACTER 10) are now reported as errors, rather than propagated
1027 as unknown types. (reported by piso on #lisp)
1028 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1029 with values NIL and :ERROR. (thanks to Milan Zamazal)
1030 * fixed bug 191c: CLOS now does proper keyword argument checking as
1031 described in CLHS 7.6.5 and 7.6.5.1.
1032 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1033 longer raise an error; further, using a list as a for-as-arithmetic
1034 counter now raises a meaningful error.
1035 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1036 now understood by sequence creation functions such as MAKE-SEQUENCE
1038 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1039 a STRING-INPUT-STREAM.
1040 * compiler enhancement: SIGNUM is now better able to derive the type
1042 * type declarations inside WITH-SLOTS are checked. (reported by
1044 * fixed some bugs revealed by Paul Dietz' test suite:
1045 ** incorrect optimization of TRUNCATE for a positive first
1046 argument and negative second.
1047 ** compiler failure in let-convertion during flushing dead code.
1048 ** compiler failure while deriving type of TRUNCATE on an
1049 interval, containing 0.
1050 ** ASH of a negative bignum by a negative bignum count now returns
1052 ** intersection of CONS types now canonicalizes properly, fixing
1053 inconsistencies in SUBTYPEP.
1055 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1056 * incompatible change: The --disable-debugger command line
1057 option now clobbers the debugger at a more fundamental
1058 level, by redefining #'INVOKE-DEBUGGER instead of by
1059 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1060 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1061 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1062 enter the debugger REPL and then suffer recursive errors
1063 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1064 while under the new system, BREAK in --disable-debugger mode
1065 terminates the system just as an unhandled error would.
1066 * fixed compiler performance when processing loops with a step >1;
1067 * bug fix: DOCUMENTATION now retrieves generic function
1068 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1069 support has been systematized, and now supports the methods
1070 specified by ANSI, along with a default method and a method for
1071 slot documentation. (reported by Nathan Froyd)
1072 * bug fix: effective methods associated with a generic function are
1073 no longer cached over a change of that generic function's method
1074 combination. (reported by Andreas Fuchs)
1075 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1076 names a non-existent directory. (thanks to Andreas Fuchs)
1077 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1078 the PPC platform, lead to stack corruption; this has been fixed.
1079 (reported by Rainer Joswig)
1080 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1081 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1082 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1083 arithmetic in general, is now much more reliable on the PPC
1085 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1086 platform now returns the right answer.
1087 * optimization: restored some effective method precomputation in
1088 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1089 precomputation is now tunable.
1090 * optimization: compiler-internal data structure use has been
1091 reviewed, and changes have been made that should improve the
1092 performance of the compiler by about 20%.
1093 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1094 simple-base-strings and simple-bit-vectors is improved.
1095 * optimization: the optimization of 32-bit logical and arithmetic
1096 functions introduced in version 0.8.3 on the x86 has been
1097 implemented on the mips, ppc and sparc platforms; an
1098 implementation of the same facility, but for 64-bit arithmetic,
1099 has been added for the alpha.
1100 * microoptimization: the compiler is better able to make use of the
1101 x86 LEA instruction for multiplication by constants.
1102 * bug fix: in some situations compiler did not report usage of
1103 generic arithmetic in (SPEED 3) policy.
1104 * bug 145b fix: compiler used wrong type specifier while converting
1105 MEMBER-types to numeric.
1106 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1108 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1109 index argument now works properly on the Alpha platform.
1110 * bug fix: floating point exception treatment on the Alpha platform
1112 * bug fix: FILE-POSITION works much better on string input and
1113 output streams. (thanks to Nikodemus Siivola)
1114 * bug fix: many threading/garbage collection symptoms sorted.
1115 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1116 might be pseudo-atomic.
1117 * internal change: Stopping for GC is now done with signals not
1118 ptrace. GC is now done in whichever thread wanted it, instead of
1120 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1122 * bug fix: result form in DO is not contained in the implicit
1124 * incompatible change: ICR structure is changed; the value part of
1125 CONTINUATION is now called LVAR; corresponding functions are
1126 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1127 * added type deriver for ISQRT (thanks to Robert E. Brown).
1128 * bug fix: better support for loading from the command line when an
1129 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1131 * fixed some bugs revealed by Paul Dietz' test suite:
1132 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1133 ** ROUND and FROUND now give the right answer when given very
1134 small float arguments.
1135 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1137 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1138 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1139 ** LCM should return a non-negative integer.
1140 ** PARSE-INTEGER returned the index of a terminator instead of the
1141 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1142 ** PARSE-INTEGER returned an incorrect index being applied to a
1144 ** LCM with two arguments of 0 returns 0 rather than signalling
1146 ** unsigned addition of a 32-bit constant with the high bit set no
1147 longer causes an internal compiler error on the x86.
1148 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1149 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1150 with negative last argument.
1151 ** byte specifiers with zero size and position no longer cause
1152 an error during type derivation.
1153 ** bignum multiplication on the Alpha platform now returns the
1155 * porting: The system now builds on SuSE AMD64, although it still
1156 generates a 32-bit binary.
1157 * .fasl file incompatibility: The fasl file version number has
1158 been incremented (because of the changes to internal compiler
1159 data structures referred to above).
1161 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
1162 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
1163 more accurately, on the Darwin kernel running on PowerPC hardware.
1164 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
1165 * Compiler code deletion notes now signal a condition of type
1166 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
1167 an associated MUFFLE-WARNING restart.
1168 * The compiler now performs limited argument count validation of
1169 constant format strings in FORMAT, and where appropriate in ERROR,
1170 CERROR and WARN. (thanks to Gerd Moellmann)
1171 * New ASDF-INSTALL contrib can be used for automatic download and
1172 installation of third-party Lisp code from CCLAN or other sites
1174 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
1175 which forces another thread to execute a function supplied by the
1177 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
1178 now accept and act upon their :ELEMENT-TYPE keyword argument.
1179 (reported by Martin Atzmueller, Edi Weitz)
1180 * bug fix: FILE-POSITION now accepts position designators up to
1181 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
1182 is the greater. (thanks to Patrik Nordebo)
1183 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
1184 Kalle Olavi Niemitalo)
1185 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
1186 printable. (reported by Eric Marsden)
1187 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
1188 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
1189 * x86 bug fix in control stack exhaustion checking: now shows backtrace
1190 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
1191 (thanks to Stig Sandoe)
1192 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
1193 UNREAD-CHAR now correctly includes the unread character in the
1194 target sequence. (thanks to Gerd Moellmann)
1195 * bug fix in threaded builds: the system can now be suspended and
1196 resumed by shell job control with minimal disruption.
1197 * bug fixes in times and timezones >2038AD
1198 * better handling of "where is GNU make?" problem in build scripts
1199 (thanks to Nikodemus Siivola)
1200 * new optimization: inside a named function any reference to a
1201 function with the same name is considered to be a self-reference;
1202 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
1203 optimization quality.
1204 * new optimization on x86: logical functions and + now have
1205 optimized (UNSIGNED-BYTE 32) versions, which are automatically
1206 used when the result is truncated to 32 bits.
1207 * VALUES declaration is partially enabled.
1208 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
1209 * fixed some bugs revealed by Paul Dietz' test suite:
1210 ** The system now obeys the constraint imposed by
1211 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
1212 types form a lattice under type intersection.
1213 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
1214 ** ASSOC now ignores NIL elements in an alist.
1215 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
1216 and (1+ MOST-POSITIVE-FIXNUM) answers.
1217 ** The addition of a method with invalid qualifiers to a generic
1218 function does not cause an error to be signalled immediately;
1219 a warning is signalled, and the error is generated only on
1220 calling the generic function.
1221 * changed .fasl file version number, in part to add type codes for
1222 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
1223 obscure ANSI requirements
1225 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
1226 * fixed bug 148: failure to inline-expand a local function left
1227 garbage, confusing the compiler.
1228 * fixed bugs 3cd: structure slot readers perform type check if the
1229 slot can have an invalid value (i.e. it is either not initialized
1230 or can be written with a less specific slot writer).
1231 * bug fix: the compiler now traps array references to elements off
1232 the end of an array; previously, the bounds checking in some
1233 circumstances could go off-by-one.
1234 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
1236 * type declarations for array element types now obey the description
1237 on the CLHS page "Declaration TYPE", as per discussions on
1238 sbcl-help around 2003-05-08. This means that a declaration
1239 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
1240 declaration, all references to BAR will be asserted or assumed
1241 (with THE, so dependent on compiler policy) to involve objects of
1242 type FOO. Note that no such declaration is implied in
1243 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
1244 * declared types of functions from the "Conditions"
1245 chapter. (reported by Paul Dietz)
1246 * bug fix: CERROR accepts a function as its first argument.
1247 * bug fix: NTH an NTHCDR accept a bignum as index
1248 arguments. (reported by Adam Warner)
1249 * optimization: character compare routines now optimize comparing
1250 against a constant character. (reported by Gilbert Baumann)
1251 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
1252 argument now works properly on the MIPS platform.
1253 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
1254 * repeated evaluation of the same DEFSTRUCT, a slot of which is
1255 declared to have a functional type, does not cause an error
1257 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
1258 many :DEFAULT-INITARGS. (reported by Istvan Marko)
1259 * fixed bug: if last continuation of a deleted block has a
1260 destination, this destination should be deleted too. (reported by
1262 * fixed a bug in the bootstrap process: the host compiler's values
1263 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
1264 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
1265 test case from Patrik Nordebo)
1266 * improved the ability of the disassembler on the PPC platform to
1267 provide helpful disassembly notes.
1268 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
1269 the class in more cases than previously.
1270 * bug fix: FILE-POSITION now understands :START and :END for
1271 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
1272 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
1273 8) data. (thanks to David Lichteblau)
1274 * bug fix: it is possible to add a method to a generic function
1275 without lambda list.
1276 * bug fix: reader failed to signal END-OF-FILE inside an
1277 object representation. (reported by Nikodemus Siivola)
1278 * fixed some bugs revealed by Paul Dietz' test suite:
1279 ** LAST and [N]BUTLAST should accept a bignum.
1280 ** condition slot accessors are methods.
1281 ** (VECTOR NIL) is a subtype of STRING.
1283 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
1284 * minor incompatible change: some nonsensical specialized lambda
1285 lists (used in DEFMETHOD) which were previously ignored now signal
1287 * minor incompatible change: the system is now aware of the types of
1288 variables in the COMMON-LISP package, and will signal errors for
1289 most violations of these type constraints (where previously they
1290 were silently accepted).
1291 * minor incompatible change: COMPILE-FILE now uses the freedom
1292 afforded (ANSI 3.2.2.3) to use derived function types for
1293 functions defined in the same file. This also permits the system
1294 to warn on static type mismatches and function
1295 redefinition. (Currently it does not work with high DEBUG level.)
1296 * minor incompatible change: VALUES declaration is disabled.
1297 * When issuing notes, the compiler now signals a condition of type
1298 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
1299 restart for use in user handlers. It is expected that the
1300 COMPILER-NOTE condition will eventually become a condition
1301 supertype to a hierarchy of note types, which will then be
1302 handleable in a similar fashion. However, at the moment, no such
1303 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
1304 but it's an implementation detail, not a classification for the
1306 * Changes in type checking closed the following bugs:
1307 ** type checking of unused values (192b, 194d, 203);
1308 ** template selection based on unsafe type assertions (192c, 236);
1309 ** type checking in branches (194bc).
1310 * A short form of VALUES type specifier has ANSI meaning (it has
1311 increased the number of situations when SBCL cannot perform type
1313 * fixed bug in DEFSTRUCT: once again, naming structure slots with
1314 keywords or constants is permissible.
1315 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
1316 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
1317 classes. (thanks to Antonio Martinez)
1318 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
1319 outputs FRESH-LINE or TERPRI, and no longer converts its stream
1320 argument to a pretty-print stream. Instead, it leaves any such
1321 operations to DESCRIBE-OBJECT methods.
1322 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
1324 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
1325 lambda lists. (thanks to David Lichteblau)
1326 * bug fix: Defining a generic function with a :METHOD-CLASS being a
1327 subclass of STANDARD-METHOD no longer causes stack exhaustion.
1328 (thanks to Gerd Moellmann)
1329 * fixed bug 246: increased compilation speed of long
1330 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
1332 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
1334 * DEFCONSTANT now throws a condition of type
1335 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
1336 constant to a non-EQL value; CONTINUE and ABORT restarts
1337 respectively change and preserve the value.
1338 * fixed bug 63: The code walker, part of the implementation of CLOS,
1339 is now better at handling symbol macros.
1340 * bug fix: There is no longer an internal implementation type named
1341 CL:LENGTH. (reported by Raymond Toy)
1342 * bug fix: In macro-like defining macros/special operators the
1343 implicit block does not enclose the lambda list.
1344 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
1345 enclosed in parentheses) are not suitable as type specifiers, and
1346 their use properly signals an error now.
1347 * bug fix: An argument count mismatch for a type specifier in code
1348 being compiled no longer causes an unhandled error at compile
1349 time, but signals a compile-time warning.
1350 * fixed simple vector readable printing
1351 * bug fix: DESCRIBE takes more care over whether the class
1352 precedence list slot of a class is bound before accessing it.
1353 (reported by Markus Krummenacker)
1354 * bug fix: FORMATTER can successfully compile pretty-printer format
1355 strings which use variants of the ~* directive inside.
1356 * bug fix: SEARCH now applies its TEST predicate to the elements of
1357 the arguments in the correct order. (thanks to Wolfhard Buss)
1358 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
1359 in type inference. (thanks to Robert E. Brown)
1360 * bug fix: Reading in symbols with an explicit package name of ""
1361 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
1362 * fixed some bugs revealed by Paul Dietz' test suite:
1363 ** NIL is now allowed as a structure slot name.
1364 ** Arbitrary numbers, not just REALs, are allowed in certain
1365 circumstances in LOOP for-as-arithmetic clauses.
1366 ** Multiple class redefinitions before slot access no longer
1367 causes a type error.
1368 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
1369 association between the name and a class.
1370 ** Generic functions with non-standard method-combination and over
1371 five methods all of which return constants no longer return NIL
1372 after the first few invocations. (thanks to Gerd Moellmann)
1373 ** CALL-NEXT-METHOD with no arguments now passes the original
1374 values of the arguments, even in the presence of assignment.
1375 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
1377 ** DISASSEMBLE works with closures and funcallable instances.
1378 ** ADD-METHOD now returns the generic function, not the new method.
1379 ** FIND-METHOD signals an error if the lengths of the specializers
1380 is incompatible with the generic function, even if the ERRORP
1382 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
1383 which its argument is a member.
1384 ** DEFCLASS only redefines the class named by its class-name
1385 argument if that name is the proper name of the class;
1386 otherwise, it creates a new class.
1387 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
1388 of the UNBOUND-SLOT condition to the name of the slot.
1389 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
1390 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
1391 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
1392 SLOT-MAKUNBOUND in the specified fashion.
1394 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
1395 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
1396 cross-compilation host. As a consequence, we can now bootstrap our
1397 way up to SBCL starting with a bare gcc toolchain and human-readable
1398 source code (first the source to CLISP, then the source to SBCL).
1399 * A contributed module containing a partial implementation of the
1400 simple-streams interface has been included. (thanks to Rudi
1402 * A contributed module implementing the RFC1321 Message Digest
1403 Algorithm, known as MD5, has been included.
1404 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1405 no longer has any effect, as the code controlled by this feature
1406 has been deleted. (As far as we know, no-one has ever built using
1407 this feature, and its semantics were confused in any case).
1408 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
1409 work on conditions (as required by the ANSI specification),
1410 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
1411 expected behaviour on conditions. Users should note, however,
1412 that such behaviour is not required by the ANSI specification,
1413 and so use of this behaviour may render their code unportable.
1414 * fixed some bugs revealed by Paul Dietz' test suite:
1415 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
1417 ** &ENVIRONMENT parameter in macro lambda list is bound first.
1418 ** SXHASH on condition objects no longer returns NIL.
1419 ** :ALLOCATION :CLASS slots are better treated; their values are
1420 updated on class redefinition, and initforms inherited from
1421 superclasses are applied.
1422 ** REMOVE-METHOD returns its generic function argument even when
1423 no method was removed.
1424 ** SHARED-INITIALIZE now initializes the values of the requested
1425 slots, including those with :ALLOCATION :CLASS.
1426 ** ALLOCATE-INSTANCE now works on structure classes defined via
1427 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
1429 ** SLOT-EXISTS-P now works on conditions, as well as structures
1431 ** MAKE-LOAD-FORM now has the required methods on
1432 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
1433 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
1434 keyword, and now implements the SLOT-NAMES argument.
1435 ** methods with &OPTIONAL arguments no longer allow too many
1436 arguments to be passed in the call without error.
1437 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
1438 option is consistent with the required arguments of the generic
1439 function lambda list.
1440 * bug fix: REQUIRE accepts a string designator. (Thanks to
1442 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
1443 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
1444 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
1445 * bug fix: The compiler now checks for duplicated variables in macro
1447 * bug fix: SETQ on globals returns the correct value.
1448 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
1449 not a COMPILER-ERROR (followed by some other strange error on
1450 choosing the CONTINUE restart).
1451 * bug fix: make.sh and friends are now more consistent in the way that
1452 they look for GNU "make".
1454 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
1455 * experimental native threads support (on x86 Linux >=2.4 only).
1456 This is not compiled in by default: you need to add :SB-THREAD to
1457 the target features. See the "Beyond ANSI" chapter of the manual
1459 * fix for longstanding nonANSIism: The old distinction between
1460 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
1461 The return value from CL:FIND-CLASS is now a CLOS class, and
1462 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
1463 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
1464 * An interface to the MetaObject Protocol, as described in Kiczales,
1465 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
1466 MIT Press, 1991, is available from the SB-MOP package.
1467 * incompatible change: the SB-PCL package should now be considered
1468 a private implementation detail, and no longer a semi-private MOP
1470 * minor incompatible change: due to rearrangement for threads, the
1471 control stack and binding stack are now allocated at arbitrary
1472 addresses instead of being hardcoded per-port. Users affected by
1473 this probably have to be doing advanced things with shared
1474 libraries, and will know who they are.
1475 * minor incompatible change: Previously, all --eval forms used were
1476 processed with READ before any of them were processed with EVAL.
1477 Now each --eval form is processed with both READ and EVAL before
1478 the next --eval form is processed. (Thus package operations like
1479 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
1480 work as the user might reasonably expect.)
1481 * minor incompatible change: *STANDARD-INPUT* is now only an
1482 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
1484 * minor incompatible change: Y-OR-N-P is now character-oriented,
1485 not line oriented. Also, YES-OR-NO-P now works without errors.
1486 (thanks to Antonio Martinez)
1487 * sb-aclrepl module improvements: an integrated inspector, added
1488 repl features, and a bug fix to :trace command.
1489 * Known functions, which cannot be open coded by the backend, are
1490 considered to be able to check types of their arguments. (fixing
1491 a bug report by Nathan J. Froyd)
1492 * fixed a bug in computing method discriminating functions: It is
1493 now possible to define methods specialized on classes which have
1494 forward-referenced superclasses. (thanks to Gerd Moellmann)
1495 * fixed evaluation order in optional entries (reported by Gilbert
1497 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
1498 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
1499 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
1500 required-by-AMOP NAME argument, as well as CLASS and
1501 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
1502 * fixed bug 20: DEFMETHOD can define methods using names that are
1503 not the proper names of classes to designate class specializers.
1504 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
1505 Unix file descriptors, instead of blowing up. (thanks to Antonio
1507 * Garbage collection refactoring: user-visible change is that a
1508 call to the GC function during WITHOUT-GCING will not do garbage
1509 collection until the end of the WITHOUT-GCING. If you were doing
1510 this you were probably losing anyway.
1511 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
1512 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
1513 TYPEP the latter but not the former.
1514 * The compiler issues a full WARNING for calls to undefined functions
1515 with names from the CL package.
1516 * MAP-INTO for a vector destination is open coded. (reported by
1517 Brian Downing on c.l.l)
1518 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
1519 documentation string.
1520 * fixed some bugs revealed by Paul Dietz' test suite:
1521 ** COPY-ALIST now signals an error if its argument is a dotted
1523 ** Condition slots are now accessed more correctly in the presence
1524 of multiple initargs for a given slot.
1525 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
1526 exclude restarts of the same name associated with a different
1528 ** DEFCLASS of forward-referenced classes with another
1529 forward-referenced class in the superclasses list no longer
1531 ** Condition slots are now initialized once each, not multiple
1532 times. (thanks to Gerd Moellmann)
1533 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
1535 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
1536 ** NSET-EXCLUSIVE-OR does not return extra elements when its
1537 arguments contain duplicated elements.
1538 ** RESTART-CASE understands local macros.
1539 ** RESTART-CASE associates exactly its own restarts with a condition.
1540 ** ENDP in safe mode checks its argument to be of type LIST.
1541 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
1542 in question is unbound.
1543 ** Optimized MAKE-INSTANCE functions no longer cause internal
1544 assertion failures in the presence of duplicate initargs.
1545 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
1546 ** Side-effectful :DEFAULT-INITARGS have their side-effects
1547 propagated even in the ctor optimized implementation of
1549 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
1551 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
1552 * a better implementation of SXHASH on (simple) bit vectors,
1553 measured both in execution speed and in distribution of results
1554 over the positive fixnums, has been installed. Likewise, a better
1555 implementation of EQUAL for simple bit vectors is now available.
1556 * fixed CEILING optimization for a divisor of form 2^k.
1557 * fixed bug 240 (emitting extra style warnings "using the lexical
1558 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
1559 by Antonio Martinez)
1560 * fixed SXHASH, giving different results for NIL depending on type
1561 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
1562 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
1563 variable. (found by Rolf Wester)
1564 * SBCL does not ignore type declarations for special
1565 variables. (reported by rif on c.l.l 2003-03-05)
1566 * some bug fixes in contrib/sb-aclrepl/
1567 * fixed some bugs revealed by Paul Dietz' test suite:
1568 ** a bug in the CONS type specifier, whereby the CAR and CDR
1569 types got intertwined, has been fixed;
1570 ** the type system is now able to reason about the interaction
1571 between INTEGER and RATIO types more completely;
1572 ** APPEND, [N]REVERSE and NRECONC check that those their
1573 arguments, which must be proper lists, are really so;
1574 ** An array specialized to be unable to hold elements has been
1575 implemented, as required -- yes, really -- by ANSI;
1576 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
1577 on malformed property lists;
1579 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
1580 * incompatible packaging change: in line with Unix convention,
1581 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
1582 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
1583 * REQUIRE and PROVIDE are now optionally capable of doing something
1584 useful. See the documentation string for REQUIRE.
1585 * infrastructure for a managed SBCL contrib system: contributed
1586 modules in this release include:
1587 ** the ASDF system definition facility;
1588 ** an interface to the BSD Sockets API;
1589 ** an ACL-like convenience interface to the repl;
1590 (thanks to Kevin Rosenberg)
1591 ** an implementation of ROTATE-BYTE, with efficient implementation
1593 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
1594 gives a closer approximation to the right answer than previously.
1595 (thanks to Raymond Toy)
1596 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
1597 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
1598 optional environment arguments, as required by ANSI.
1599 * fixed bugs in other functions taking environment objects, allowing
1600 calls with an explicit NIL environment argument to be compiled
1602 * fixed bug 228: primary return values from
1603 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
1604 COMPILE or FUNCTION.
1605 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
1606 :TYPE will no longer signal errors on innocuous objects.
1607 * fixed bug 231b: SETQ is better at respecting type declarations in
1608 the lexical environment.
1609 * fixed a bug in DEFCLASS: classes named by symbols with no or
1610 unprintable packages can now be defined.
1611 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
1612 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
1613 * fixed compiler failure related to checking types of functions.
1614 (reported by Robert E. Brown)
1615 * the compiler is now much more consistent in its error-checking
1616 treatment of bounding index arguments to sequence functions: in
1617 (SAFETY 3) code, errors will be signalled in almost all cases if
1618 invalid sequence bounding indices are passed to functions defined
1619 by ANSI to operate on sequences.
1620 * fixed a bug in the build procedure: documentation of SBCL-specific
1621 packages is now preserved and available in the final Lisp image.
1622 * lifted FDEFINITION lookup out of loops in the implementation of
1623 many list operations. (thanks to Robert E. Brown)
1624 * fixed a bug in the reader: the #n# reader macro now works for
1625 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
1626 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
1627 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
1628 E. Brown and Tony Martinez respectively)
1629 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
1630 SLOT-BOUNDP: in particular, it is now able to optimize them much
1631 better, and is now not vulnerable to having packages renamed.
1632 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
1633 always called when a slot is not present in an instance. (thanks
1635 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
1636 longer signal an error on unreading a character following EOF on
1637 the previous constituent stream. (thanks to Tony Martinez)
1638 * fixed some bugs revealed by Paul Dietz' test suite:
1639 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
1640 not just nonnegative fixnums;
1641 ** the logical bit-array operators such as BIT-AND now accept an
1642 explicit NIL for their "opt-arg" argument (to indicate a
1643 freshly-consed result bit-array);
1644 ** ELT now signals an error on an invalid sequence index in safe
1646 ** the type system is now cleverer about negations of numeric
1647 types, and consequently understands the BIGNUM and RATIO types
1649 ** the type system is now cleverer about the interaction between
1650 INTEGER and RATIO types: while bugs still remain, many more
1651 cases are accurately computed;
1652 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
1653 if it is in the last clause;
1654 ** CONSTANTLY now correctly returns a side-effect-free function in
1656 ** DECLARE is no longer treated as a special-operator; in
1657 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
1658 * incremented fasl file version number due to the change in the
1659 DEFSTRUCT-SLOT-DESCRIPTION structure.
1661 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
1662 * minor incompatible change: code processed by the "interpreter" or
1663 EVAL now has a compilation optimization policy of (DEBUG 2)
1664 (changed from (DEBUG 1)) to improve debuggability of interactive
1665 development, and to allow the use of the debug RETURN command in
1667 * an experimental implementation of the RETURN command for the
1668 debugger has been included. (thanks to Frederik Kuivinen)
1669 * fixed bug 62: constraints were not propagated into a loop.
1670 * fixed bug in embedded calls of SORT (reported and investigated by
1672 * fixed some bugs revealed by Paul Dietz' test suite:
1673 ** printing and reading of arrays with some dimensions having
1674 length 0 (thanks to Gerd Moellmann);
1675 ** BOA constructor with &AUX argument without a default value does
1676 not cause a type error;
1677 ** CONSTANTP now returns true for all self-evaluating objects.
1679 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
1680 * fixed bug 127: DEFSTRUCT now does not clobber old structure
1681 accessors that are related by inheritance, as specified in the
1682 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
1683 Valtteri Vuorikoski)
1684 * The compiler is now able to inline functions that were defined in
1685 a complex lexical environment (e.g. inside a MACROLET).
1686 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
1688 * Support for the upcoming FreeBSD-5.0 release has been included.
1689 (thanks to Dag-Erling Smorgrav)
1690 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
1691 effect when it is not in a toplevel context.
1692 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
1693 stand a better chance of being correct. (thanks to Gerd
1695 * fixed bug in COERCE, which now signals an error on coercing a
1696 rational to a bounded real type which excludes the expected
1698 * The compiler is now able to derive types more accurately from the
1699 COERCE and COMPILE functions.
1700 * fixed bug 223: functional binding is considered to be constant
1701 only for symbols in the CL package.
1702 * fixed bug 231: SETQ did not check the type of a variable being set
1703 (reported by Robert E. Brown)
1704 * A new optimization for MAKE-INSTANCE has been included, fixing
1705 various bugs (including relating to :ALLOCATION :CLASS slots and
1706 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
1708 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
1709 ** As required by ANSI, LOOP now disallows anonymous collection
1710 clauses such as COLLECT I in conjunction with aggregate boolean
1711 clauses such as THEREIS (= I 1);
1712 ** LOOP now signals an error when any variable is reused in the
1713 same loop (including the potentially useful construct analogous
1714 to WITH A = 1 WITH A = (1+ A);
1715 ** IT is only a special loop symbol within the first clause of a
1716 conditional loop clause;
1717 ** LOOP with a typed iteration variable over a hashtable now
1718 signals a type error iff it should.
1719 * fixed some other bugs revealed by Paul Dietz' test suite:
1720 ** FILE-STREAM now names the class previously known as FD-STREAM;
1721 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
1722 argument) no longer signals an error;
1723 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
1724 of the slot symbol, rather than using the current package
1725 ((:CONC-NAME "") continues to intern the slot's name in the
1727 * incremented fasl file version number, because of the incompatible
1728 change to the DEFSTRUCT-DESCRIPTION structure, and again because
1729 of the new implementation of DEFINE-COMPILER-MACRO.
1731 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
1732 * Support for building SBCL for MIPS platforms running in
1733 little-endian mode has now been checked in, and basic
1734 functionality on said platforms verified.
1735 * minor incompatible change: PCL now records the pathname of a file
1736 in which methods and the like are defined, rather than its
1738 * minor incompatible change: TRUENAME now considers the truename of
1739 a file naming a directory to be the pathname with :DIRECTORY
1740 component indicating that directory.
1741 * minor incompatible change: a NAMED clause in the extended form of
1742 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
1743 reason for the previous behaviour is unclear.
1744 * more systematization and improvement of CLOS and MOP conformance
1745 in PCL (thanks to Gerd Moellman and Pierre Mai):
1746 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
1748 ** DEFINE-METHOD-COMBINATION no longer signals an error for
1749 primary methods with no specializers;
1750 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
1752 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
1753 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
1754 FORWARD-REFERENCED-CLASSes; error reporting on
1755 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
1757 ** SXHASH on CLOS instances now uses a slot internal to the
1758 instance to return different numbers on distinct instances,
1759 while preserving the same return value through invocations of
1761 ** DEFMETHOD signals errors when methods with longer incongruent
1762 lambda lists are added to generic functions;
1763 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
1764 CLASS, as specified in AMOP;
1765 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
1766 on the order returned by the primary method for classes of
1767 class STANDARD-CLASS;
1768 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
1769 * fixed some bugs shown by Paul Dietz' test suite:
1770 ** DOLIST puts its body in TAGBODY;
1771 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
1773 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
1774 value producing form;
1775 ** if more variables are given to PROGV than values, extra
1776 variables are bound and made to have no value;
1777 ** NSUBSTITUTE on list arguments gets the right answer with
1779 ** ELT signals an error of type TYPE-ERROR when the index argument
1780 is not a valid sequence index;
1781 ** LOOP signals (at macroexpansion time) an error of type
1782 PROGRAM-ERROR when duplicate variable names are found;
1783 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
1784 ** FUNCALL of special-operators now cause an error of type
1786 ** PSETQ now works as required in the presence of side-effecting
1787 symbol-macro places;
1788 ** NCONC accepts any object as its last argument;
1789 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
1791 ** loop-for-as-package does not require a package to be explicitely
1793 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
1795 * fixed bug 166: compiler preserves "there is a way to go"
1796 invariant when deleting code.
1797 * fixed bug 172: macro lambda lists with required arguments after
1798 &REST arguments now cause an error to be signalled. (thanks to
1800 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
1801 bug. (thanks to Matthew Danish)
1802 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
1804 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
1805 arguments are lexically rebound. (thanks to Gerd Moellmann and
1807 * fixed bug 194: error messages are now more informative when there
1808 is no primary method applicable in a call to a generic
1809 function. (thanks to Gerd Moellmann)
1810 * fixed bug in command line argument checking (thanks to Julian
1812 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
1813 (thanks to Matthew Danish)
1814 * incremented fasl file version number, because of the
1815 SXHASH-related changes in the layout of CLOS data structures
1817 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
1818 * minor incompatible change: The runtime (the Unix executable named
1819 "sbcl") is now much pickier about the .core files it will load.
1820 Essentially it now requires .core files to descend from the same
1821 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
1822 as the runtime does. (The intent is to prevent the crashes which
1823 can occur, and which can even be reported as mysterious failures,
1824 when people patch the sources or change the build parameters
1825 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
1826 sbcl and .core files.)
1827 * fixed bug: VALUES-LIST is no longer optimized away.
1828 * fixed bug 142: The FFI conversion of C string values to Lisp
1829 string values no longer conses excessively. (thanks to Nathan
1830 Froyd porting Raymond Toy's fix to CMU CL)
1831 * began to systematize and improve MOP conformance in PCL (thanks to
1832 Nathan Froyd, Gerd Moellman and Pierre Mai):
1833 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
1835 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
1836 ** FINALIZE-INHERITANCE is now called on class finalization;
1837 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
1838 argument precedence order.
1839 * fixed bug 202: The compiler no longer fails on functions whose
1840 derived types contradict their declared type.
1841 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
1842 so it can be non-toplevel.
1843 * The fasl file version number has changed (because of the new
1844 implementation of DEFMACRO).
1845 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
1846 safe code, that any length requirement by their type-specifier
1847 argument is valid. The exceptions to this are described in bug
1849 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
1850 functions now check the types of their inputs as required by ANSI.
1851 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
1852 introduced symbol is DECLAREd to be SPECIAL.
1853 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
1854 * fixed bug: :COUNT argument to sequence functions may be negative
1855 * fixed bug: body of DO-SYMBOLS may contain declarations
1856 * fixed bug: PUSHNEW now evaluates its arguments from left to right
1857 (reported by Paul F. Dietz, fixed by Gerd Moellman)
1858 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
1859 symbol macro only once
1860 * fixed printing of call frame when argument list is unavailable
1861 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
1862 * compiler no longer signals WARNING on unknown keyword
1865 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
1866 * A beta-quality port to the mips architecture running Linux,
1867 based on the old CMUCL backend, has been made. It has been tested
1868 on a big-endian kernel, and works sufficiently well to be able to
1869 rebuild itself; it has not been tested in little-endian mode.
1870 * fixed an inconsistency between gencgc.c and purify.c which made
1871 dumping/loading .core files unreliable
1872 * fixed bug 120a: The compiler now deals correctly with IFs where
1873 the consequent is the same as the alternative, instead of
1874 misderiving the return type. (thanks to Alexey Dejneka)
1875 * fixed bug 113: Logical pathnames are now dumpable (the logical
1876 host is resolved at load-time, throwing an error if it is not
1878 * fixed bug 174: FORMAT's error message is slightly clearer when a
1879 non-printing character is used in a format directive.
1880 * fixed several bugs in compiler checking of type declarations, i.e.
1881 violations of the Python "declarations are assertions" principle
1882 (thanks to Alexey Dejneka)
1883 * fixed several bugs in PCL's error checking (thanks to Gerd
1885 * fixed bug: printing of FILE-ERROR (thanks to Antonio
1887 * fixed bug in compilation of functions as first class values
1888 (thanks to Antonio Martinez-Shotton)
1889 * The compiler's handling TYPE-ERRORs which it can prove will
1890 inevitably happen at runtime has been cleaned up and corrected
1891 in several ways. (thanks to Alexey Dejneka)
1892 * improved argument type checking for various basic arithmetic
1893 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
1894 lavished on them in the past that they can be compiled in many
1895 ways in different special cases
1896 * fixed bug 181: compiler checks validity of user supplied type
1898 * cleaned up code flushing in optimization: Function calls which
1899 should signal errors for safety purposes (e.g. which ANSI says
1900 should signal errors when their arguments are of incorrect type)
1901 are no longer optimized away.
1902 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
1903 * incremented fasl file version number, because changes in the
1904 implementation of sequence functions like COERCE caused
1905 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
1906 in old inline expansions) to become undefined. (Actually these
1907 changes were later undone, so we might very well be binary
1908 compatible with 0.7.7 after all, but leaving the version number
1909 incremented seemed like the simplest and most conservative
1912 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
1913 * An alpha-quality port to the parisc architecture running Linux,
1914 based on the old CMUCL backend, has been made. This, even more so
1915 than the other backends, should be considered still a work in
1916 progress; known problems include that the Linux kernel in 64-bit
1917 mode does not propagate the correct sigcontext structure to
1918 userspace, and consequently SBCL on a parisc64 kernel will not
1920 * fixed bug 189: The compiler now respects NOTINLINE declarations for
1921 functions declared in FLET and LABELS. (I.e. "LET conversion" is
1922 suppressed.) Also now that the compiler is looking at declarations
1923 in the environment, it checks optimization declarations as well,
1924 and suppresses inlining when (> DEBUG SPEED).
1925 * More fixes have been made to treatment of floating point exception
1926 treatment and other Unix signals. In particular, floating point
1927 exceptions no longer cause Bus errors on the SPARC/Linux platform.
1928 * The detection and handling of control stack exhaustion (infinite
1929 or very deeply nested recursion) has changed. Stack exhaustion
1930 detection is now done by write-protecting pages at the OS level
1931 and applies at all optimization settings; when found, a
1932 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
1933 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
1934 be caught using IGNORE-ERRORS.
1935 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
1936 correctly when transforming recursive LABELS functions to LETs.
1937 (thanks to Alexey Dejneka)
1938 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
1939 that are names of constants or global variables.
1940 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
1941 alien routines with docstrings.
1942 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
1943 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
1945 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
1946 (thanks to Eric Marsden)
1947 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
1948 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
1949 * Bug fix: The SPARC backend can now compile functions involving
1950 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
1951 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
1952 to a functions expecting a PATHNAME-DESIGNATOR.
1953 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
1954 lambda lists. (thanks to Alexey Dejneka)
1955 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
1956 functions so that EXPORTing the name of the class doesn't cause
1957 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
1958 to Antonio Martinez for reporting this)
1959 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
1960 constant-folded without failing an assertion. (thanks to Einar
1961 Floystad Dorum for reporting this)
1962 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
1963 types are now dealt with more correctly by the compiler.
1964 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
1965 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
1966 behaviour analogous to RENAME-FILE. This puts its behaviour more
1967 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
1969 * The fasl file version number has changed again. (because of the
1970 bug fix involving the names of PCL MAKE-INSTANCE functions)
1972 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
1973 * bug fix: Floating point exceptions are treated much more
1974 consistently on the x86/Linux and PPC/Linux platforms.
1975 * Array initialization with :INITIAL-ELEMENT is now much faster for
1976 cases when the compiler cannot open code the array creation, but
1977 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
1978 array accesses have also seen a speed increase.
1979 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
1980 specified. (This was at the root of some bad interactions between
1981 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
1983 * bug fix: Internal error arguments for undefined functions are now
1984 computed correctly on the PPC/Linux platform.
1985 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
1986 Raymond Toy's patch for CMU CL)
1987 * Support for the Solaris 9 operating environment has been included
1988 (thanks to Daniel Merritt)
1989 * A very ugly but hopefully complete draft of the missing FFI chapter
1990 of the manual has been created by reformatting the corresponding
1991 CMU CL manual chapter into (currently very ugly and incoherent)
1992 DocBook and bringing it up to date for SBCL behavior. Thus, the
1993 manual is now essentially complete, at least by my extreme
1994 once-and-only-once standards, whereby it's acceptable to refer to
1995 the doc strings of SB-EXT functions as the primary documentation.
1996 * The fasl file version number has changed again, due to cleanup of
1997 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
1998 is no longer a static symbol.)
2000 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2001 * SBCL now builds with OpenMCL (version 0.12) as the
2002 cross-compilation host; also, more progress has been made toward
2003 bootstrapping under CLISP.
2004 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2006 * bug 158 fixed: The compiler can now deal with integer loop
2007 increments different from 1; fixing this turned out also to fix
2009 * bug 169 fixed: no more bogus warnings about using lexical bindings
2010 despite the presence of perfectly good SPECIAL declarations (thanks
2011 to David Lichteblau)
2012 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2013 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2014 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2016 * bug 180 fixed: Method combination specifications no longer ignore
2017 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2018 * bug fix: Structure type predicate functions now check their argument
2019 count as they should.
2020 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2021 correctly. (thanks to Pierre Mai)
2022 * minor incompatible change: The --noprogrammer option is deprecated
2023 in favor of the new --disable-debugger option, which is very similar.
2024 (The major difference is that it takes effect at a slightly different
2025 time at startup, causing handling of errors in --sysinit and
2026 --userinit files will be affected differently.) The
2027 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2028 been added to allow this functionality to be controlled from ordinary
2029 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2030 maintainers, who might want to run non-interactive scripts to
2031 build SBCL cores which will later be used interactively.)
2032 * minor incompatible change: The LOAD function no longer, when given
2033 a wild pathname to load, loads all files matching that pathname.
2034 Instead, an error of type FILE-ERROR is signalled.
2036 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2037 * bug 147 fixed: The compiler preserves its block link/count
2038 invariants more correctly now so that it doesn't crash. (thanks
2040 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2042 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2043 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2044 no-value-for-this-character as NIL (as specified by ANSI).
2045 * HOST-NAMESTRING on physical pathnames now returns a string that is
2046 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2047 (thanks to Christophe Rhodes)
2048 * The Alpha port handles icache flushing more correctly. (thanks to
2050 * More progress has been made toward bootstrapping under CLISP. (thanks
2051 to Christophe Rhodes)
2052 * The fasl file format has changed again, because dynamic loading
2053 on OpenBSD (which has non-ELF object files) motivated some cleanups
2054 in the way that foreign symbols are transformed and passed around.
2055 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2056 is no longer treated as whitespace by the reader, but instead as
2057 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2058 |A
\7fB|, instead of A as it used to.
2060 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2061 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2062 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2063 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2064 this as of 0.7.1.45, but was left out of the previous news section
2065 (thanks to Dan Barlow)
2066 * SBCL now runs on the Solaris operating system on SPARC architectures
2067 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2068 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2069 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2070 * SPARC backend cleanups, allowing builds of cores optimized for V8
2071 and V9 SPARCS, and also emission of code targeted to a particular
2072 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2074 * SBCL is closer to bootstrapping under CLISP, thanks to various
2075 fixes by Christophe Rhodes.
2076 * The fasl file format has changed again, to allow the compiler's
2077 INFO database to support symbol macros.
2078 * The user manual (in doc/) is formatted into HTML more nicely.
2079 (thanks to coreythomas)
2080 * The system is smarter about SUBTYPEP relationships, especially
2081 those involving NOT types (including types such as ATOM which are
2082 represented internally using NOT types). Thus SUBTYPEP is less
2083 likely to return (VALUES NIL NIL) in general, and in particular
2084 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2086 * The fasl file format has changed again, because the internal
2087 representation of types now includes a new slot to support the new
2088 SUBTYPEP-of-NOT-types logic.
2089 * (not a change in the main branch of SBCL, but a related prototype
2090 which can hopefully be merged into the main branch of SBCL in the
2091 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2092 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2093 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2094 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2095 dispatch macro character combinations. (thanks to Alexey Dejneka)
2096 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2097 that superficially look like logical namestrings correctly.
2098 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2100 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2101 default supplied-p) for &optional and &key arguments. (thanks to
2104 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2105 * incompatible change: The compiler is now less aggressive about
2106 tail call optimization, doing it only when (> SPACE DEBUG) or
2107 (> SPEED DEBUG). (This is an incompatible change because there are
2108 programs which relied on the old CMU-CL-style behavior to optimize
2109 away their unbounded recursion which will now die of stack overflow.)
2110 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2111 for non-GENCGC systems has been increased to 20M (since that
2112 seems much closer to the likely performance optimum for modern
2113 systems than the old 4M value was)
2114 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2115 and *DEBUG-PRINT-LEVEL*
2116 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2117 of CMU CL's support for SPARC, and various endianness and other
2118 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2119 * new syntactic sugar for the Unix command line: --load foo.bar is now
2120 an alternate notation for --eval '(load "foo.bar")'.
2122 ** The system now detects stack overflow and handles it gracefully,
2123 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2124 optimization settings. (This is a good thing in general, and
2125 its introduction in this version should be particularly timely
2126 for anyone whose code fails because of suppression of tail
2128 ** The system now hunts for the C variable "environ" in a more
2129 devious way, to avoid segfaults when the C library version differs
2130 between compile time and run time. (thanks to Christophe Rhodes)
2131 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2132 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2133 ** The compiler no longer issues bogus style warnings for undefined
2134 classes in the same source file as the DEFCLASSes which defined
2135 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2137 ** fixes in CONDITION class precedence list for undefined function
2138 errors (thanks to Alexei Dejneka)
2139 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2140 correctly. (thanks to Dan Barlow)
2141 ** portability fixes aiming at bootstrapping under CLISP (thanks
2142 to Dave McDonald and Christophe Rhodes)
2143 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2144 ** fixes in type translation and and type inference (thanks to
2146 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2147 ** various fixes in the new ports (thanks to Dan Barlow)
2148 * several changes related to debugging:
2149 ** suppression of tail recursion, as noted above
2150 ** stack overflow detection, as noted above
2151 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2152 is now the default. (For some time encapsulation has been more
2153 reliable than the breakpoint-based :ENCAPSULATE NIL
2154 implementation, at least on X86 systems; and I just noticed that
2155 encapsulation also seems closer to the spirit of the ANSI
2158 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
2160 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
2161 up properly again. (There was a packaging bug in 0.7.0 which
2162 left their definitions in SB-SYS::LOAD-FOREIGN and
2163 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
2164 vital for most things which interface to C-level interfaces,
2165 like extensions working with sockets or databases or
2166 Perl-compatible regexes or whatever, and the need to fix
2167 this bug is the main reason that 0.7.1 was released so
2169 ** DEFGENERIC is now choosier about the methods it redefines, so that
2170 reLOADing a previously-LOADed file containing DEFGENERICs does
2171 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
2172 cycle now works as it should. (thanks to Alexey Dejneka)
2173 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
2174 fixed by Christophe Rhodes. (He actually submitted this patch
2175 months ago, and I delayed until after 0.7.0.)
2176 ** Bug 111 (internal compiler confusion about runtime checks on
2177 FUNCTION types) was fixed by Alexey Dejneka.
2178 * Some internal cleanups (getting rid of variables which aren't
2179 needed now that the byte interpreter is gone) caused the fasl
2180 file format number to change again.
2182 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
2183 * major incompatible change: The default fasl file extension, i.e. the
2184 default extension for files produced by COMPILE-FILE, has changed
2185 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
2187 ** There are many changes in the implementation of the compiler.
2188 SBCL is now essentially a compiler-only implementation of ANSI
2189 Common Lisp. EVAL still "interprets" a few special cases, but
2190 almost all the interesting cases are handled by creating
2191 a LAMBDA expression, calling COMPILE on it, then calling
2192 FUNCALL on the result.
2193 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
2194 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
2195 Since the code is newer, there might still be some new bugs
2196 (though not as many as before Martin Atzmueller's fixes:-). But
2197 the new code is substantially simpler and clearer, and hopefully
2198 any remaining bugs will be simpler, less fundamental, and more
2199 fixable then the bugs in the old code.
2200 ** The revised compiler is still a little unsteady on its feet.
2202 *** The debugging information it produces (particularly the names
2203 of FUNCTION objects) is sometimes much less useful than what
2204 the old compiler produced.
2205 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
2206 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
2207 within a MACROLET) has been temporarily weakened.
2208 ** There are new compiler optimizations for various functions:
2209 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
2210 FIND-IF-NOT, POSITION-IF-NOT, and FILL
2211 *** the math functions TRUNCATE, FLOOR, and CEILING
2212 *** the function-of-all-trades COERCE
2213 Mostly these should be transparent, but there's one
2214 potentially-annoying problem (bug 117): when the compiler
2215 inline-expands a function and does type analysis on the result,
2216 it can create control paths which have type mismatches, and
2217 when it can't prove that those control paths aren't taken,
2218 it will issue WARNINGs about the type mismatches. This is
2219 a particular problem in practice for the new sequence functions.
2220 It's not clear how this should be fixed, and for now, a
2221 workaround is given in the entry for 117 in the BUGS file.
2222 ** (Because of the interaction between the two previous items --
2223 occasional inlining problems and new inline expansions -- some
2224 of the new sequence function optimizations won't really kick in
2225 completely until debugging information, and then inlining, are
2226 straightened out in some future version.)
2227 * minor incompatible changes:
2228 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
2229 DIRECTORY no longer implicitly promotes NIL slots of its
2230 pathname argument to :WILD. In particular, when you ask for the
2231 contents of a directory (which you used to be able to do without
2232 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
2233 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
2234 ** changes in behavior that ANSI explicitly defines to be
2235 implementation dependent:
2236 *** The new compiler-only implementation still conforms with ANSI,
2237 but acts a little different than before. Besides the obvious
2238 changes in performance tradeoffs (that the cost per form passed
2239 to EVAL has gone up, and the cost per form executed by EVAL
2240 has gone down), the behavior of the system changes a little
2241 because there are no longer any interpreted function objects.
2242 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
2243 e.g. doing COMPILE on the output of interactive DEFUN is
2245 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
2247 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
2248 has changed from (:CL) to NIL.
2249 *** The CHAR-NAME of unprintable ASCII characters which, unlike
2250 e.g. #\Newline and #\Tab, don't have names specified in the
2251 ANSI Common Lisp standard, is now based on their ASCII symbolic
2252 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
2253 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
2254 are no longer used for output.
2255 ** changes in internal implementation constants:
2256 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
2257 4 million. (If your application spends a lot of time GCing and
2258 you have a lot of RAM, you might want to experiment with
2259 increasing it even more.)
2260 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
2261 However, almost all old code should still continue to work without
2262 immediate update, as SB-C-CALL is now a (deprecated) nickname
2264 ** Old operator names in the style DEF-FOO are now deprecated in
2265 favor of new corresponding names DEFINE-FOO, for consistency with
2266 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
2267 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
2268 internal symbols, but a few supported extensions like
2269 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
2270 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
2271 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
2272 etc. as you get deeper into recursive calls to the debugger
2273 command loop, instead of the old "5]", "5]]", "5]]]"
2274 sequence. (I was motivated to do this when squabbles between
2275 ILISP and SBCL left me very deeply nested in the debugger. In the
2276 short term, this change will probably provoke more ILISP/SBCL
2277 squabbles, but hopefully it will be an improvement in the long run.)
2278 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
2279 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
2280 function, since declaiming return types involving aliens is
2281 (1) annoyingly messy to do by hand and (2) vital to efficient
2282 compilation of code which calls such functions.
2283 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
2284 longer reexported by the SB-EXT package. They're solely useful
2285 for alien code, so it seems more logical that you should get
2286 them from the SB-ALIEN package, not in SB-EXT.
2287 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
2288 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
2289 features. Instead, the code that they used to control is always
2290 built into the system.
2291 * many other bug fixes
2292 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
2293 advantage of the new EVAL-WHEN stuff and to clean them up in
2294 general, and they are now more ANSI-compliant in a number of
2295 ways. Martin Atzmueller is responsible for a lot of this.
2296 ** Besides the cleanups discussed above, Martin Atzmueller fixed
2298 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
2299 *** correct ERROR type for various file operations
2300 *** some fixes for Lisp streams
2301 *** DEFMETHOD syntax checking
2302 *** changing old weird representation of debug information as
2303 strings (which, among their other deficiencies, don't transform
2304 correctly when you rename packages, and don't change their
2305 print representation when you change things like *PACKAGE*
2306 and *PRINT-LENGTH*) to symbols and lists of symbols
2307 He also made several improvements and fixed several bugs in DESCRIBE.
2308 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
2310 *** misbehavior of WRITE-STRING/WRITE-LINE
2311 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
2312 and several other LOOP problems as well
2313 *** DIRECTORY when similar filenames are present
2314 *** DEFGENERIC with :METHOD options
2315 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
2316 *** bug in the optimization of ARRAY-ELEMENT-TYPE
2317 *** argument ordering in FIND with :TEST option
2318 *** mishandled package designator argument in APROPOS-LIST
2319 *** various problems in the backquote readmacro
2320 *** a bug in APROPOS
2321 *** probably some others that I'm not describing very well here,
2322 since the CVS log documents them by reference to sbcl-devel
2323 messages, and the SourceForge archives aren't working well.:-(
2324 ** Dan Barlow improved the Alpha port (and is making progress on the
2325 PPC port, for those of you who think different).
2326 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
2327 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
2328 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
2329 continues to work on the SPARC port (for those of you in a position
2330 to look down upon our little PC-compatible boxes from a great height).
2331 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
2332 and uses that copy, rather than the current dynamic value, when
2333 it's trying to decide whether to truncate output. Thus e.g.
2334 (let ((*print-lines* 50))
2335 (pprint-logical-block (stream nil)
2337 (let ((*print-lines* 8))
2338 (print (aref possiblybigthings i) stream)))))
2339 should now truncate the logical block only at 50 lines, instead of
2340 often truncating it at 8 lines, as it did before.
2341 * The doc/cmucl/ directory, containing old CMU CL documentation
2342 from the time of the fork, is no longer part of the base system.
2343 SourceForge has shut down its anonymous FTP service, and with it
2344 my original plan for distributing the old CMU CL documentation
2345 there. For now, if you need these files you can download an old
2346 SBCL source release and extract them from it.
2347 * The fasl file version number changed again, for dozens of reasons,
2348 some of which are apparent above.
2350 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
2351 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
2352 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
2353 patch, so that DISASSEMBLE output is much nicer.
2354 * The code in the SB-PROFILE package now seems reasonably stable.
2355 I still haven't decided what the final interface should look like
2356 (I'd like PROFILE to interact cleanly with TRACE, since both
2357 facilities use function encapsulation) but if you have a need
2358 for profiling now, you can probably use it successfully with
2359 the current CMU-CL-style interface.
2360 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
2361 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
2362 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
2363 link now returns the dangling link itself, and for similar
2364 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
2365 link itself. (In these cases the old code signalled an error and
2366 looped endlessly, respectively.) Thus, DIRECTORY now works even
2367 in the presence of dangling and cyclic symbolic links.
2368 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
2369 is now a supported extension again, since the consensus on
2370 sbcl-devel was that it can be useful for ordinary development
2371 work, not just for debugging SBCL itself.
2372 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
2373 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
2374 that currently-defined functions might be redefined later with
2375 different return types.
2376 * Hash tables can be printed readably, as inspired by CMU CL code
2377 of Eric Marsden and SBCL code of Martin Atzmueller.
2378 * better error handling in CLOS method combination, thanks to
2379 Martin Atzmueller porting Pierre Mai's CMU CL patches
2380 * more overflow fixes for >16Mbyte I/O buffers
2381 * A bug in READ has been fixed, so that now a single Ctrl-D
2382 character suffices to cause end-of-file on character streams.
2383 In particular, now you only need one Ctrl-D at the command
2384 line (not two) to exit SBCL.
2385 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
2387 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
2388 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
2389 does the right thing.
2390 * The implementation of some type tests, especially for CONDITION
2391 types, is now tidier and maybe faster, due to CMU CL code
2392 originally by Douglas Crosher, ported by Martin Atzmueller.
2393 * Some math functions have been fixed, and there are new
2394 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
2395 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
2396 * (There are also some new optimizers in contrib/*-extras.lisp. Those
2397 aren't built into sbcl-0.6.13, but are a sneak preview of what's
2398 likely to be built into sbcl-0.7.0.)
2399 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2400 CL, ported to SBCL by Martin Atzmueller)
2401 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2402 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2403 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2404 * There's a new slam.sh hack to shorten the edit/compile/debug
2405 cycle for low-level changes to SBCL itself, and a new
2406 :SB-AFTER-XC-CORE target feature to control the generation of
2407 the after-xc.core file needed by slam.sh.
2408 * minor incompatible change: The ENTRY-POINTS &KEY argument to
2409 COMPILE-FILE is no longer supported, so that now every function
2410 gets an entry point, so that block compilation looks a little
2411 more like the plain vanilla ANSI section 3.2.2.3 scheme.
2412 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
2413 returns the number of bytes consed since the system started,
2414 rather than the number consed since the first time the function
2415 was called. (The new definition parallels ANSI functions like
2416 CL:GET-INTERNAL-RUN-TIME.)
2417 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
2418 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
2419 supported. Now DIRECTORY always does the abstract Common-Lisp-y
2420 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
2421 * Fasl file version numbers are now independent of the target CPU,
2422 since historically most system changes which required version
2423 number changes have affected all CPUs equally. Similarly,
2424 the byte fasl file version is now equal to the ordinary
2427 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
2428 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
2429 is no longer recognized. I apologize for this, because it was
2430 listed in SB-EXT as a supported extension, but I found that
2431 its existing behavior was poorly specified, as well as incorrectly
2432 specified, and it looked like too much of a mess to straighten it
2433 out. I have enough on my hands trying to get ANSI stuff to work..
2434 * many patches ported from CMU CL by Martin Atzmueller, with
2435 half a dozen bug fixes in pretty-printing and the debugger, and
2436 half a dozen others elsewhere
2437 * fixed bug 13: Floating point infinities are now supported again.
2438 They might still be a little bit flaky, but thanks to bug reports
2439 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
2440 as flaky as they were.
2441 * The --noprogrammer command line option is now supported. (Its
2442 behavior is slightly different in detail from what the old man
2443 page claimed it would do, but it's still appropriate under the
2444 same circumstances that the man page talks about.)
2445 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
2446 are now supported, and enabled by default. Thus, the compiler can
2447 handle many floating point and complex operations much less
2448 inefficiently. (Thus e.g. you can implement a complex FFT
2450 * The compiler now detects type mismatches between DECLAIM FTYPE
2451 and DEFUN better, and implements CHECK-TYPE more correctly, and
2452 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
2453 thanks to patches from Martin Atzmueller.
2454 * various fixes to make the cross-compiler more portable to
2455 ANSI-conforming-but-different cross-compilation hosts (notably
2456 Lispworks for Windows, following bug reports from Arthur Lemmens)
2457 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
2458 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
2459 fixed thanks to Pierre Mai's CMU CL patches.
2460 * fixes to keep the system from overflowing internal counters when
2461 it tries to use i/o buffers larger than 16M bytes
2462 * fixed bug 45a: Various internal functions required to support
2463 complex special functions have been merged from CMU CL sources.
2464 (When I was first setting up SBCL, I misunderstood a compile-time
2465 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
2466 * improved support for type intersection and union, fixing bug 12
2467 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
2468 more obscure bugs as well
2469 * some steps toward byte-compiling non-performance-critical
2470 parts of the system, courtesy of patches from Martin Atzmueller
2471 * Christophe Rhodes has made some debian packages of sbcl at
2472 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
2473 From his sbcl-devel e-mail of 2001-04-08 they're not completely
2474 stable, but are nonetheless usable. When he's ready, I'd be happy
2475 to add them to the SourceForge "File Releases" section. (And if
2476 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
2477 * new fasl file format version number (because of changes in
2478 internal representation of (OR ..) types to accommodate the new
2479 support for (AND ..) types, among other things)
2481 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
2482 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
2484 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
2486 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
2487 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
2488 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
2489 * DESCRIBE now works on structure objects again.
2490 * Most function call argument type mismatches are now handled as
2491 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
2492 know whether the function will be redefined before the call is
2493 executed. (The compiler could flag local calls with full WARNINGs,
2494 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
2495 it doesn't keep track of enough information to know whether calls
2496 are local in this sense.)
2497 * Compiler output is now more verbose, with messages truncated
2498 later than before. (There should be some supported way for users
2499 to override the default verbosity, but I haven't decided how to
2500 provide it yet, so this behavior is still controlled by the internal
2501 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
2502 src/compiler/ir1util.lisp.)
2503 * Fasl file format version numbers have increased again, because
2504 support for the Gray streams extension changes the layout of the
2505 system's STREAM objects.
2506 * The Gray subclassable streams extension now works, thanks to a
2507 patch from Martin Atzmueller.
2508 * The full LOAD-FOREIGN extension (not just the primitive
2509 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
2510 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
2511 but like most other programs, it defaults to copying the Unix
2512 environment from the original process instead of starting the
2513 new process in an empty environment.
2514 * Extensions which manipulate the Unix environment now support
2515 an :ENVIRONMENT keyword option which doesn't smash case or
2516 do other bad things. The CMU-CL-style :ENV option is retained
2517 for porting convenience.
2518 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
2519 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
2521 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
2523 * A patch from Martin Atzmueller seems to have solved the SIGINT
2524 problem, and as far as we know, signal-handling now works cleanly.
2525 (If you find any new bugs, please report them!)
2526 * The system no longer defaults Lisp source file names to types
2527 ".l", ".cl", or ".lsp", but only to ".lisp".
2528 * The compiler no longer uses special default file extensions for
2529 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
2530 seems to expect a single default extension for all compiled code,
2531 and there's no compelling reason to try to stretch the standard
2532 to allow two different extensions.) Instead, byte-compiled files
2533 default to the same extension as native-compiled files.
2534 * Fasl file format version numbers have increased again, because
2535 a rearrangement of internal implementation packages made some
2536 dumped symbols in old fasl files unreadable in new cores.
2537 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
2538 many fewer weird special cases.
2539 * Bug #17 (differing COMPILE-FILE behavior between logical and
2540 physical pathnames) has been fixed, and some related misbehavior too,
2541 thanks to a patch from Martin Atzmueller.
2542 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
2543 by Tim Moore, ported to SBCL by Martin Atzmueller.
2544 * Martin Atzmueller fixed several filesystem-related problems,
2545 including bug #36, in part by porting CMU CL patches, which were
2546 written in part by Paul Werkowski.
2547 * More compiler warnings in src/runtime/ are gone, thanks to
2548 more patches from Martin Atzmueller.
2549 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
2552 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
2554 * DESCRIBE now works on CONDITION objects.
2555 * The debugger now handles errors which arise when trying to print
2556 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
2558 * The build system now uses an additional file, customize-target-features.lisp,
2559 to allow local modifications to the target *FEATURES* list. (The point of
2560 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
2561 debugging features enabled, without having to worry about propagating it
2562 into everyone's system when I do a "cvs update".) When no
2563 customize-target-features.lisp file exists, the target *FEATURES* list
2564 should be constructed the same way as before.
2565 * fixed bugs in DEFCONSTANT ANSI-compatibility:
2566 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
2567 warn about behavior which is undefined under the ANSI spec. Note: This
2568 is specified by ANSI, but it's not very popular with programmers.
2569 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
2570 macro in the SBCL sources for an example of a workaround which you
2571 might use to make portable ANSI-standard code which does what you want.
2572 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
2573 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
2574 when it's used as a non-toplevel form. (This is required in order
2575 to implement the DEFCONSTANT-EQX macro.)
2576 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
2577 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
2578 funny things, due to bugs in the implementation of EVAL-WHEN
2579 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
2580 non-toplevel DEFCONSTANTs are uncommon.)
2581 * The core file version number and fasl file version number have been
2582 incremented, because the old noncompliant DEFCONSTANT behavior involved
2583 calling functions which no longer exist, and because I also took the
2584 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
2585 * fixed bug 1 (error handling before read-eval-print loop starts), and
2586 redid debugger restarts and related debugger commands somewhat while
2588 ** The QUIT debugger command is gone, since it did something
2589 rather different than the SB-EXT:QUIT command, and since it never
2590 worked properly outside the main toplevel read/eval/print loop.
2591 Invoking the new TOPLEVEL restart provides the same functionality.
2592 ** The GO debugger command is also gone, since you can just invoke
2593 the CONTINUE restart directly instead.
2594 ** The TOP debugger command is also gone, since it's redundant with the
2595 FRAME 0 command, and since it interfered with abbreviations for the
2597 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
2599 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
2600 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
2601 some porting work by Martin Atzmueller)
2602 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
2603 with a boatload of patches which he ported to SBCL. Now that those
2605 ** The system tries to make sure that its low-priority messages
2606 are prefixed by semicolons, to help people who like to use
2607 syntax highlighting in their ILISP buffer. (This patch
2608 was originally due to Raymond Toy.)
2609 ** The system now optimizes INTEGER-LENGTH better, thanks to more
2610 patches originally written by Raymond Toy.
2611 ** The compiler understands coercion between single-value and
2612 multiple-VALUES type expressions better, getting rid of some very
2613 weird behavior, thanks to patches originally by Robert MacLachlan
2614 and Douglas Crosher.
2615 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
2616 lambda lists, thanks to a patch originally by Pierre Mai.
2617 ** The system no longer bogusly warns about "abbreviated type
2619 ** The compiler gets less confused by inlining and RETURN-FROM,
2620 thanks to some patches originally by Tim Moore.
2621 ** The system no longer hangs when dumping circular lists to fasl
2622 files, thanks to a patch originally from Douglas Crosher.
2623 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
2624 undefined function error.
2625 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
2626 in structure slot initforms) for now, documented workaround instead:-|
2627 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
2628 * fixed bug 5: added stubs for various Gray stream functions called
2629 in the not-a-CL:STREAM case, so that even when Gray streams aren't
2630 installed, at least appropriate type errors are generated
2631 * fixed bug 8: better reporting of various PROGRAM-ERRORs
2632 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
2633 consistently in DEFMETHOD forms.
2634 * removed bug 21 from BUGS, since Martin Atzmueller points out that
2635 it doesn't seem to affect SBCL after all
2636 * The C runtime system now builds with better optimization and many
2637 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
2639 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
2641 * The system is now under CVS at SourceForge (instead of the
2642 CVS repository on my home machine).
2643 * The new signal handling code has been tweaked to treat register
2644 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
2645 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
2646 downstream, e.g. in debug-int.lisp, has implicit dependencies
2647 on the unsignedness of integer representation of machine words,
2648 and that caused the system to bomb out with infinite regress
2649 when trying to recover from type errors involving signed values,
2650 e.g. (BUTLAST '(1 2 3) -1).)
2651 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
2652 (This was one of the bugs Peter Van Eynde reported back in July.)
2653 * The system now uses code inspired by Colin Walters' O(N)
2654 implementation of MAP (from the cmucl-imp@cons.org mailing
2655 list, 2 September 2000) when it can't use a DEFTRANSFORM to
2656 inline the MAP operation, and there is more than one
2657 sequence argument to the MAP call (so that it can't just
2658 do ETYPECASE once and for all based on the type of the
2659 single sequence argument). (The old non-inline implementation
2660 of the general M-argument sequence-of-length-N case required
2661 O(M*N*N) time when any of the sequence arguments were LISTs.)
2662 * The QUIT :UNIX-CODE keyword argument has been renamed to
2663 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
2664 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
2666 * Raymond Wiker's patches to port dynamic loading from Linux to
2667 FreeBSD have been added.
2668 * The BUGS file is now more nearly up to date, thanks in large part
2669 to Martin Atzmueller's review of it.
2670 * The debugger now flushes standard output streams before it begins
2671 its output ("debugger invoked" and so forth).
2672 * The core version number and fasl file version number have both
2673 been incremented, because of incompatible changes in the layout
2675 * FINISH-OUTPUT is now called more consistently on QUIT. (It
2676 used to not be called for a saved Lisp image.)
2677 * Martin Atzmueller's version of a patch to fix a compiler crash,
2678 as posted on sbcl-devel 13 September 2000, has been installed.
2679 * Instead of installing Martin Atzmueller's patch for the
2680 compiler transform for SUBSEQ, I deleted the compiler transform,
2681 and transforms for some similar consing operations.
2682 * A bug in signal handling which kept TRACE from working on OpenBSD
2684 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
2685 away by constant folding
2686 * The system now defines its address space constants in one place
2687 (in the Lisp sources), and propagates them automatically elsewhere
2688 (through GENESIS and the sbcl.h file). Therefore, patching the
2689 address map is less unnecessarily tedious and error-prone. The
2690 Lisp names of address space constants have also been systematized.
2691 * CVS tags like dollar-Header-dollar have been removed from
2692 the sources, because they have never saved me trouble and
2693 they've been source of trouble working with patches and other
2694 diff-related operations.
2695 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
2696 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
2698 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
2700 * The system has been ported to OpenBSD.
2701 * The system now compiles with a simple "sh make.sh" on the systems
2702 that it's supported on. I.e., now you no longer need to tweak
2703 text in the target-features.lisp-expr and symlinks in src/runtime/
2704 by hand, the make.sh takes care of it for you.
2705 * The system is no longer so grossly inefficient when compiling code
2706 involving vectors implemented as general (not simple) vectors (VECTOR T),
2707 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
2708 which dares to use the various sequence functions on non-simple
2709 vectors, takes less of a performance hit.
2710 * There is now a primitive type predicate VECTOR-T-P
2711 to test for the (VECTOR T) type, so that e.g.
2712 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
2713 can now be compiled with some semblance of efficiency. (The old code
2714 turned the type declaration into a full call to %TYPEP at runtime!)
2715 * AREF on (VECTOR T) is still not fast, since it's still compiled
2716 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
2717 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
2718 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
2719 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
2720 without making full calls to SUBTYPEP at runtime.
2721 (Some analogous efficiency issues for non-simple vectors specialized to
2722 element types other than T, or for non-simple multidimensional arrays,
2723 have not been addressed. They could almost certainly be handled the
2724 same way if anyone is motivated to do so.)
2725 * The changes in array handling break binary compatibility, so
2726 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
2727 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
2728 instead of (VALUES T T).
2729 * By following the instructions that Dan Barlow posted to sbcl-devel
2730 on 2 July 2000, I was able to enable primitive dynamic object
2731 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
2732 functionality is not implemented (since it calls ld to resolve
2733 library references automatically, requiring RUN-PROGRAM for its
2734 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
2735 try to resolve library references) is now supported.
2736 * The system now flushes the standard output streams when it terminates,
2737 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
2738 them at several other probably-convenient times, e.g. in each pass of
2739 the toplevel read-eval-print loop, and after evaluating a form given
2740 as an "--eval" command-line option. (These changes were motivated by a
2741 discussion of stream flushing issues on cmucl-imp in August 2000.)
2742 * The source transform for TYPEP of array types no longer assumes
2743 that an array whose element type is a not-yet-defined type
2744 is implemented as an array of T, but instead punts, so that the
2745 type will be interpreted at runtime.
2746 * There is now some support for cross-compiling in make.sh: each of
2747 the phases of make.sh has its own script. (This should be transparent
2748 to people doing ordinary, non-cross-compile builds.)
2749 * Since my laptop doesn't have hundreds of megabytes of memory like
2750 my desktop machine, I became more motivated to do some items on
2751 my to-do list in order to reduce the size of the system a little:
2752 ** Arrange for various needed-only-at-cold-init things to be
2753 uninterned after cold init. To support this, those things have
2754 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
2755 symbols with such names are now uninterned after cold init).
2756 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
2757 fasl files for cold load.
2758 ** Remove the old compiler structure pooling code (which used to
2759 be conditional on the target feature :SB-ALLOC) completely.
2760 ** Redo the representation of some data in cold init to be more compact.
2761 (I also looked into supporting byte compiled code at bootstrap time,
2762 which would probably reduce the size of the system a lot, but that
2763 looked too complicated, so I punted for now.)
2764 * The maximum signal nesting depth in the src/runtime/ support code has
2765 been reduced from 4096 to 256. (I don't know any reason for the very
2766 large old value. If the new smaller value turns out to break something,
2767 I'll probably just bump it back up.)
2768 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
2770 * Many, many bugs reported by Peter Van Eynde have been added to
2771 the BUGS list; some have even been fixed.
2772 * While enabling dynamic object file loading, I tried to make the
2773 code easier to understand, renaming various functions and variables
2774 with less ambiguous names, and changing some function calling
2775 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
2776 * While trying to figure out how to do the OpenBSD port, I tried to
2777 clean up some of the code in src/runtime/. In particular, I dropped
2778 support for non-POSIX signal handling, added various comments,
2779 tweaked the code to reduce the number of compilation warnings, and
2780 renamed some files to increase consistency.
2781 * To support the new automatic configuration functionality in make.sh,
2782 the source file target-features.lisp-expr has been replaced with the
2783 source file base-target-features.lisp-expr and the machine-generated
2784 file local-target-features.lisp-expr.
2785 * fixed a stupid quoting error in make.sh so that using CMU CL
2786 "lisp -batch" as cross-compilation host works again
2788 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
2790 * DESCRIBE no longer tries to call itself recursively to describe
2791 bound/fbound values, so that it no longer fails on symbols which are
2792 bound to themselves (like keywords, T, and NIL).
2793 * DESCRIBE now works on generic functions.
2794 * The printer now prints less-screwed-up representations of closures
2795 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
2796 * A private symbol is used instead of the :EMPTY keyword previously
2797 used to mark empty slots in hash tables. Thus
2798 (DEFVAR *HT* (MAKE-HASH-TABLE))
2799 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
2800 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
2801 now does what ANSI says that it should. (You can still get
2802 similar noncompliant behavior if bang on the hash table
2803 implementation with all the symbols you get back from
2804 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
2805 This breaks binary compatibility, since tests for equality to
2806 :EMPTY are wired into things like the macroexpansion of
2807 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
2809 * There's now a minimal placeholder implementation for CL:STEP,
2810 as required by ANSI.
2811 * An obscure bug in the interaction of the normal compiler, the byte
2812 compiler, inlining, and structure predicates has been patched
2813 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
2814 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
2816 * Missing ordinary arguments in a macro call are now detected even
2817 when the macro lambda list contains &KEY or &REST.
2818 * The debugger no longer complains about encountering the top of the
2819 stack when you type "FRAME 0" to explicitly instruct it to go to
2820 the top of the stack. And it now prints the frame you request even
2821 if it's the current frame (instead of saying "You are here.").
2822 * As specified by ANSI, the system now always prints keywords
2823 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
2825 * The default initial SIZE of HASH-TABLEs is now smaller.
2826 * Type information from CLOS class dispatch is now propagated
2827 into DEFMETHOD bodies, so that e.g.
2828 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2830 is now basically equivalent to
2831 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2832 (DECLARE (TYPE SINGLE-FLOAT X))
2834 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
2835 operation, without having to do run-time type dispatch.
2836 * The macroexpansion of DEFMETHOD has been tweaked so that it has
2837 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
2838 * Since I don't seem to be making big file reorganizations very often
2839 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
2840 is overflowing my ability to conveniently back them up), I've finally
2841 checked the system into CVS. (The CVS repository is on my home system,
2842 not at SourceForge -- putting it on SourceForge might come later.)
2843 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
2844 high-level GC-NOTIFY-FOO functions send their output. (There's
2845 still very little control of where low-level verbose GC functions
2846 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
2847 less than it used to -- the GC-NOTIFY-FOO functions are now under
2848 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
2849 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
2850 in only one place in the source code, and propagates it automatically
2851 everywhere that it's needed. Thus e.g. when I bump the version from
2852 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
2853 * The C source files now include boilerplate legalese and documentation
2854 at the head of each file (just as the Lisp source files already did).
2855 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
2856 to his page will be replaced with a link to his new CLiki service.
2858 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
2860 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
2861 * The build process now looks for GNU make under the default name "gmake",
2862 instead of "make" as it used to. If GNU make is not available as "gmake"
2863 on your system, you can change this default behavior by setting the
2864 GNUMAKE environment variable.
2865 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
2866 can build without error under CMU CL.
2868 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
2870 * There is now a partial SBCL user manual (with some new text and some
2871 text cribbed from the CMU CL manual).
2872 * The beginnings of a profiler have been added (starting with the
2873 CMU CL profiler and simplifying and cleaning up). Eventually the
2874 main interface should be through the TRACE macro, but for now,
2875 it's still accessed through vaguely CMU-CL-style functions and macros
2876 exported from the package SB-PROFILE.
2877 * Some problems left over from porting CMU CL to the new
2878 cross-compilation bootstrap process have been cleaned up:
2879 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
2880 instead of SB!XC:DEFMACRO, compounded by an oversight on my
2881 part when getting rid of the compiler *BACKEND* stuff.)
2882 ** The value of *NULL-TYPE* was screwed up, because it was
2883 being initialized before the type system knew the final
2884 definition of the 'NULL type. This screwed up several key
2885 optimizations in the compiler, causing inefficiency in all sorts
2886 of places. (I found it because I wanted to understand why
2887 GET-INTERNAL-RUN-TIME was consing.)
2888 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
2889 PROCLAIM FTYPE information. Unfortunately this broke binary
2890 compatibility again, since now the forms output by DEFGENERIC
2891 to refer to functions which didn't exist in 0.6.3.
2892 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
2893 can use the new (as of 0.6.3) transform for SOME into MAP into
2895 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
2896 values to (INTEGER 0 1000000), so that the time code will no longer
2897 occasionally get blown up by Linux returning 1000000 microseconds
2898 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
2899 its output conform to the ANSI spec. (Alas, this makes its output
2900 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
2901 * A full call to MAP NIL with a single sequence argument no longer conses.
2902 * fixes to problems pointed out by Martin Atzmueller:
2903 * The manual page no longer talks about multiprocessing as though
2904 it were currently supported.
2905 * The ILISP support patches have been removed from the distribution,
2906 because as of version 5.10.1, ILISP now supports SBCL without us
2907 having to maintain patches.
2908 * added a modified version of Raymond Toy's recent CMU CL patch for
2909 EQUALP comparison of HASH-TABLE
2911 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
2913 * The system still can't cross-compile itself with
2914 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
2915 entails), but at least it can compile more of itself that way
2916 than it used to be able to, and various buglets which were uncovered
2917 by trying to cross-compile itself that way have now been fixed.
2918 * This release breaks binary compatibility again. This time
2919 at least I've incremented the FASL file format version to 2, so that the
2920 problem can be detected reliably instead of just causing weird errors.
2921 * various new style warnings:
2922 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
2923 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
2924 ** using the lexical binding of a variable named in the *FOO* style
2925 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
2926 as specified by ANSI.
2927 * *RANDOM-STATE* is no longer automatically initialized from
2928 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
2929 default behavior of the system is to repeat its behavior every time
2930 it's run. If you'd like to change this behavior, you can always
2931 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
2932 old convention there was no comparably easy way to get the system to
2933 repeat its behavior every time it was run.
2934 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
2935 FTYPE declarations has been removed, in favor of their ANSI
2936 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
2937 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
2938 the types of their sequence arguments can be determined at compile time.
2939 This is done through a new open code expansion for MAP which eliminates
2940 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
2941 argument types can be determined at compile time.
2942 * The optimizer now transforms COERCE into an identity operation when it
2943 can prove that the coerced object is already of the correct type. (This
2944 can be a win for machine generated code, including the output of other
2945 optimization transforms, such as the MAP transform above.)
2946 * Credit information has been moved from source file headers into CREDITS.
2947 * Source file headers have been made more standard.
2948 * The CASE macro now compiles without complaining even when it has
2951 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
2953 * (Note that the way that the PCL macroexpansions were rewritten
2954 to accommodate the change in DEFGENERIC below breaks binary
2955 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
2956 not run under sbcl-0.6.2. Once we get out of alpha releases,
2957 i.e. hit release 1.0.0, we'll probably try to maintain binary
2958 compatibility between maintenance releases, e.g. between sbcl-1.4.3
2959 and sbcl-1.4.4. Until then, however, it might be fairly common
2960 for maintenance releases to break binary compatibility.)
2961 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
2963 * The reporting of unhandled signals has been changed to print some
2964 explanatory text as well as the report form. (Previously only
2965 the report form was printed.)
2966 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
2967 it defines, so that the compiler no longer issues undefined function
2968 warnings for compiled-but-not-yet-loaded generic functions.
2969 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
2970 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
2971 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
2972 section of the ANSI spec are supported.
2973 * The "" nickname for the "KEYWORD" package has been removed.
2974 The reader still handles symbol tokens which begin with a package marker
2975 as keywords, but it doesn't expose its mechanism for doing so in the
2976 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
2977 * The system now issues STYLE-WARNINGs for contradictory TYPE
2978 proclamations. (Warnings for contradictory FTYPE proclamations would
2979 be nice too, but those can't be done usefully unless the type system
2980 is made smarter about FUNCTION types.)
2981 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
2982 systematized, so that "*target-*.lisp is supposed to exist only on the
2983 target and imply that there's a related file which exists on the
2984 host, and *host-*.lisp is supposed to exist only on the host and imply
2985 that there's a related file which exists on the target. This involves a
2986 lot of renaming. Hopefully the acute confusion caused by the renaming
2987 will be justified by the reduction in chronic confusion..
2988 ** runtime-type.lisp -> early-target-type.lisp
2989 ** target-type.lisp -> late-target-type.lisp
2990 ** early-host-format.lisp -> early-format.lisp
2991 ** late-host-format.lisp -> late-format.lisp
2992 ** host-error.lisp -> misc-error.lisp
2993 ** early-error.lisp -> early-target-error.lisp
2994 ** late-error.lisp -> late-target-error.lisp
2995 ** host-defboot.lisp -> early-defboot.lisp
2996 ** code/misc.lisp -> code/target-misc.lisp
2997 ** code/host-misc.lisp -> code/misc.lisp
2998 ** code/numbers.lisp -> code/target-numbers.lisp
2999 ** code/early-numbers.lisp -> numbers.lisp
3000 ** early-host-type.lisp -> early-type.lisp
3001 ** late-host-type.lisp -> late-type.lisp
3002 ** host-typep.lisp -> typep.lisp
3003 ** load.lisp -> target-load.lisp
3004 ** host-load.lisp -> load.lisp
3005 ** host-disassem.lisp -> disassem.lisp
3006 ** host-insts.lisp -> insts.lisp
3007 ** byte-comp.lisp -> target-byte-comp.lisp
3008 ** host-byte-comp.lisp -> byte-comp.lisp
3009 ** host-signal.lisp -> signal.lisp
3010 ** host-defstruct.lisp -> defstruct.lisp
3011 ** late-target-type.lisp -> deftypes-for-target.lisp
3012 Furthermore, several other previously target-only files foo.lisp (e.g.
3013 hash-table.lisp and random.lisp) have been split into a target-and-host
3014 foo.lisp file and a target-only target-foo.lisp file, with their key type
3015 definitions in the target-and-host part, so that the cross-compiler will
3016 know more about target types.
3017 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3018 gone away. In their place are various *BACKEND-FOO* variables
3019 corresponding to the slots of the old structure.
3020 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3021 into the target SBCL has been fixed.
3022 * The chill.lisp system for loading cold code into a running SBCL
3024 * Support for the CMU CL "scavenger hook" extension has been removed.
3025 (It was undocumented and unused in the CMU CL sources that SBCL was
3026 derived from, and stale in sbcl-0.6.1.)
3027 * Various errors in the cross-compiler type system were detected
3028 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3029 (enabling various consistency checks). Many of them were fixed,
3030 but some hard problems remain, so the compiler is back to
3031 running without *TYPE-SYSTEM-INITIALIZED* for now.
3032 * As part of the cross-compiler type system cleanup, I implemented
3033 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3034 * I have started adding UNCROSS calls throughout the type system
3035 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3036 on cross-compiler input files will be able to go away, and various
3038 * CONSTANTP now returns true for quoted forms (as explicitly required
3041 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3043 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3044 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3045 (MAKE-LIST -1). In the longer term, it ought to become true
3046 that declarations are assertions even at SAFETY 1. For now, it's not
3047 quite true even at SAFETY 3, but it's at least more nearly true..
3048 (Note that this change seems to increases the size of the system by
3049 O(5%) and to decrease the speed of the compiler by 20% or more.)
3050 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3051 for the problem of printing dozens of lines of distracting information
3052 about low-level system machinery as part of the top stack frame
3053 on entry to the debugger when an undefined function was called.
3054 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3055 is not reset to COMMON-LISP-USER.
3056 * Compilation of stuff related to dyncount.lisp has been made conditional
3057 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3058 smaller. The various dyncount-related symbols have been moved into
3059 a new "SB-DYNCOUNT" package.
3060 * tty-inspect.lisp has been renamed to inspect.lisp.
3061 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3062 feature has gone away. (When we eventually port to other flavors of
3063 libc and/or Unix, we'll try to make the differences between flavors
3064 invisible at the user level.)
3065 * Various other *FEATURES* tags, and/or their associated conditionals,
3066 have been removed if obsolescent, or given better documentation, or
3067 sometimes given more-mnemonic names.
3069 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3071 * tidied up "make.sh" script
3072 * tidied up system directory structure
3073 * better "clean.sh" behavior
3074 * added doc/FOR-CMUCL-DEVELOPERS
3075 * many many small tweaks to output format, e.g. removing possibly-confusing
3076 trailing #\. character in DESCRIBE-INSTANCE
3077 * (EQUALP #\A 'A) no longer signals an error.
3078 * new hashing code, including EQUALP hashing
3079 * tidied up Lisp initialization and toplevel
3080 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3081 * command line argument processing
3082 * added POSIX-GETENV function to deal with Unix-ish environment variables
3083 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3084 terminating SBCL on EOF
3085 * non-verbose GC by default
3086 * There is no more "sbcl" shell script; the sbcl file is now the C
3087 runtime executable (just like CMU CL).
3088 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3090 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3091 symbol and package information as Lisp native symbol and package objects
3092 instead of strings naming symbols and strings naming packages. This way,
3093 whenever packages are renamed (as in warm init), debug information is
3094 transformed along with everything else.
3095 * tweaked the optimization policy declarations which control the building
3096 of SBCL itself. Now, among other things, the system no longer saves
3097 source location debugging information. (This helps two problems at once
3098 by reducing SBCL size and by keeping SBCL from trying to look for its
3099 sources -- which may not exist -- when reporting errors.)
3100 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3101 debugging and testing purposes
3102 * cleaned up printing, making the printer call PRINT-OBJECT for
3103 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3104 methods, giving nearly-ANSI behavior
3105 * converted almost all special variables to use *FOO* naming convention
3106 * deleted PARSE-TIME functionality, since it can be done portably
3107 * moved some files out of cold init into warm init
3108 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3110 * regularized formatting of source files
3111 * added an install.sh script
3112 * fixed ridiculous memory usage of cross-compiler by making
3113 compiler/alloc.lisp not try to do pooling unless it can hook
3114 itself into the GC of the cross-compilation host. Now the system
3115 builds nicely on my old laptop.
3116 * added :SB-ALLOC in target-features.lisp-expr
3117 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3118 was not implemented)
3119 * re-did condition handling and note reporting in the compiler. Notes
3120 are no longer handled by signalling conditions. Style warnings
3121 and warnings are handled more correctly and reported in such a way
3122 that it's easy to find one or the other in your output (so that you
3123 can e.g. figure out which of many problems caused COMPILE-FILE to
3125 * changed the severity of several compiler warnings from full WARNING
3126 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3127 compiler note reporting so that it doesn't use the condition system
3128 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3129 COMPILE-FILE command)
3130 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3131 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3132 no longer supported, since their implementation was deeply intertwingled
3133 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3134 * removed bogus "support" for compiler macros named (SETF FOO), and
3135 removed the compiler macro for SETF INFO (but only after making a fool
3136 of myself on the cmucl-imp mailing list by posting a bogus patch for
3137 DEFINE-COMPILER-MACRO..)
3138 * Compiled files containing forms which have side effects on the Lisp
3139 reader (such as DEFPACKAGE forms) are now handled more correctly.
3140 (Compiler queuing of top level lambdas has been suppressed by setting
3141 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3142 * deleted various currently-unused source files, e.g. gengc.lisp. They
3143 may be added back at some point e.g. when porting to other architectures,
3144 but until they are it's distracting to distribute them and to try to
3146 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3147 there were so many of them they're just distractions, and UNCROSS is
3148 known to be able to handle the current sources
3149 * moved PROFILE functionality into TRACE, so that it will be clear
3150 how the wrapping and unwrapping of functions when you profile them
3151 interacts with the wrapping and unwrapping of functions when you
3152 trace them. (Actually, the functionality isn't there yet, but at least
3153 the interface specification is there. Hopefully, the functionality will
3154 arrive with some future maintenance release.)
3155 * removed host-oops.lisp
3156 * changed signature of QUIT function to allow UNIX-CODE argument
3157 * fixed READ-SEQUENCE bug
3158 * tweaked verbose GC output so that it looks more like the progress
3159 output that ANSI specifies for functions like LOAD
3160 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
3161 * added <http://sbcl.sourceforge.com> to the banner information printed by