1 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2 * numerous signal handling fixes to increase stability
3 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
4 * bug fix: interrupt-thread restores the eflags register on x86
5 * minor incompatible change: we now correctly canonize default
6 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
7 as per the MOP, rather than the historical (INITARG INITFUNCTION
8 INITFORM). (reported by Bruno Haible)
9 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
10 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
12 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
13 pathname is a directory pathname.
14 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
15 * fixed some lockups due to gc/thread interaction
16 * dynamic space size on PPC has been increased to 768Mb. (thanks to
18 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
19 :METACLASS argument in addition to a class name. (reported by
20 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
21 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
22 (reported by Bruno Haible; patch from Gerd Moellmann)
23 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
25 * bug fix: more cleanups to the floating point exception handling on
26 x86-64 (thanks to James Knight)
27 * bug fix: the compiler does not try to constant fold calls of
28 COERCE and BIT-* functions when they return freshly constructed
29 objects. (reported by Nikodemus Siivola and Paul Dietz)
30 * optimization: improved the MIPS versions of generic (in the
31 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
32 * optimization: direct conversion of (unsigned-byte 32) to floats on
34 * optimization: structure instances with raw slots now use less
35 memory, and probably show better memory locality. (thanks to
37 * optimization: DYNAMIC-EXTENT declarations for &REST lists are
38 treated as requests for stack allocation on PPC platforms.
39 * optimization: DYNAMIC-EXTENT declarations for lists and closures
40 are treated as requests for stack allocation on the x86-64 and
42 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
43 the wrong file descriptor; implementation of SOCKET-OPEN-P.
44 (thanks to Tony Martinez)
45 * fixed some bugs revealed by Paul Dietz' test suite:
46 ** invalid dotted lists no longer raise a read error when
48 ** signal an error if a symbol that names a declaration is used
49 as the name of a type, or vice versa
50 ** allow using the (declare (typespec var*)) abbreviation for
51 (declare (type typespec var*)) with all type specifiers
52 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
53 ** always return NIL from PPRINT-POP when OBJECT is NIL
54 ** don't signal errors when pretty-printing malformed LABELS,
55 FLET or MACROLET forms
56 ** declarations in a DOLIST body are also in scope for the
58 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
60 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
63 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
64 * fixed cross-compiler leakages that prevented building a 32-bit
65 target with a 64-bit host compiler.
66 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
67 opened with :IF-EXISTS :OVERWRITE.
68 * fixed bug 281: error for an invalid qualifier in a short-form method
69 combination method is not signalled until the faulty method is called.
70 * bug fix: iteration variable type inferrer failed to deal with open
71 intervals. (reported by Alan Shields)
72 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
73 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
74 or more runtime options were provided to the sbcl binary.
75 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
76 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
77 * optimization: there's now a fast-path for fixnum arguments in the
78 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
79 * optimization: the code generated on x86-64 is more compact thanks
80 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
81 * bug fix: floating-point exception handling now partly works on
82 x86-64. (Thanks to James Knight)
83 * improvement to the MIPS backend from Thiemo Seufer: C-style
84 64-bit long long arguments and return values to alien functions
86 * fixed some bugs revealed by Paul Dietz' test suite:
87 ** the type-error signalled from WARN has a filled-in DATUM slot.
88 ** the type-error required when a stream is not associated with
89 a file has the stream as its datum.
90 ** type-errors on single-floats on x86-64 no longer have
91 :INVALID-OBJECT as the datum
92 ** the type-errors signalled for invalid function names now have
93 a correct expected type
94 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
95 for structures defined with a :TYPE. Documentation strings for
96 typed structures are no longer immediately discarded
97 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
98 broadcast streams and synonym streams. FILE-LENGTH now also works
101 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
102 * incompatible change: the --noprogrammer option, deprecated since
103 version 0.7.5, has been removed. Please use the equivalent
104 --disable-debugger option instead.
105 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
107 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
108 inoperational for a while now) has been completely removed.
109 * null lexical environments are now printed as #<NULL-LEXENV>,
110 significantly reducing the amount of clutter in typical backtraces.
111 * documentation on weak pointers, finalization, and after GC hooks
112 has been added to the manual.
113 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
114 as other specialized array types, is much faster. SUBSEQ and
115 COPY-SEQ on such arrays have also been sped up.
116 * optimization: EQL is now more efficient when at least other argument
117 is known to be of type (OR FIXNUM (NOT NUMBER)).
118 * fixed bug: the runtime is now less vulnerable to changes in the
119 size of the SBCL object on OS X, and virtual memory is reserved for
120 all spaces that need to be at a fixed address.
121 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
122 * fixed bug: finalizers and after GC hooks that cause consing are now
124 * fixed bug: compiler error messages and summaries are now printed to
125 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
126 * fixed inference of the upper bound of an iteration variable.
127 (reported by Rajat Datta).
128 * fixed bug 211e: calling local functions with duplicated constant
129 keyword argument no longer causes a bogus style warning about an
131 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
132 ftype declaration to be disregarded. (reported by Dave Roberts)
133 * fixed bug 373: caused by erronous compilation of references to alien
134 variables in the runtime on ppc/darwin.
135 * fixed bug 376: CONJUGATE type deriver.
136 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
137 (reported by Baughn on #lisp)
138 * a cross-compiler bug on non-x86 platforms has been identified and
139 fixed. (thanks to Bruno Haible)
140 * improvements to the MIPS runtime code for increased stability.
141 (thanks to Thiemo Seufer)
142 * increased the maximimum compact environment size to allow
143 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
144 * partial workaround for bug 135: don't name the function we're
145 calling for hairy cases of EVAL, so as not to accumulate one environment
146 entry per call to EVAL. (reported by Kevin Reid)
147 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
148 * optimization: type testing for non-vector arrays should be faster.
149 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
151 * bug fix: setting 31st element of a bit vector to zero did not work
153 * bug fix: redefining a class definition which failed due to a
154 previous accessor / function clash now works (but see BUGS entry
155 #380 for more problems in this area). (thanks to Zach Beane)
156 * the long form of DEFINE-METHOD-COMBINATION disables method group
157 checking when given a single method group with pattern *. (thanks
159 * on x86 compiler supports stack allocation of results of simple
160 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
161 * support for building and running on Mac OS X 10.4 "Tiger" has been added
162 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
163 * fixed some bugs related to Unicode integration:
164 ** the restarts for recovering from input and output encoding
165 errors only appear when there is in fact such an error to
167 * fixed some bugs revealed by Paul Dietz' test suite:
168 ** MISC.549 and similar: late transformation of unsafe type
169 assertions into derived types caused unexpected code
171 ** SCALE-FLOAT type deriver is less wrong.
172 ** type derivers for EXP, LOG and similar functions compute result
173 types for complex arguments better.
174 ** (MISC.563) CONJUGATE type deriver works for very restricted
176 ** out-of-line type testers for character strings are available.
177 ** EQUAL compiler transform understands specialness of objects
179 ** accessing double-floats stored on the stack now works on x86-64.
180 ** debugger internals could sometimes create invalid lispobjs,
181 resulting in GC crashes.
182 ** MISC.548: type check weakening can convert required type into
184 ** initialization forms for bindings are not in scope of free special
187 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
188 * incompatible change: thread support for non-NPTL systems has
189 been removed - locking is buggy and unreliable. A threaded
190 SBCL build will now warn at startup and refuse to create
191 new threads, unless futex support is detected in the kernel
192 * incompatible change: the top level REPL now has only an ABORT
193 restart associated with it, not TOPLEVEL and ABORT as it used to.
194 TOP and TOPLEVEL are now available as debugger commands for
195 returning to the top level.
196 * incompatible change: forms evaluated in the REPL now use the
197 global optimization policy.
198 * incompatible change: user- and system-initialization files are
199 no longer processed with LOAD, but by READ and EVAL; hence the
200 global optimization policy, startup package, readtable, etc,
202 * The .fasl file format number has been incremented because of
203 various incompatible changes.
204 * internal entry point details and argument counts no longer appear
205 in backtraces unless explicitly requested by setting
206 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
207 * built-in and standard functions no longer have names like "top
208 level local call to FOO".
209 * fixed bug 32: functions defined in non-null lexical environments
210 now have more legible printed representation
211 * fixed bug 33: functions defined in non-null lexical environemnts
212 are now more amenable to inspection by INSPECT.
213 * workaround for bug 354: XEPs no longer appear in backtraces unless
214 explicitly requested.
215 * fixed bug: receiving the signal which results from attempting to
216 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
217 SIGBUS on other *BSDs) on architectures where the C stack is also
218 the Lisp stack (x86 and x86-64) from foreign code no longer leads
219 to debugger confusion or wild instability. (reported by Cheuksan
221 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
222 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
223 (reported by Lutz Euler)
224 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
225 compiled code. (reported by Paul Dietz)
226 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
227 specialized parameter to a method to something that is not TYPEP
228 the specializer is now possible.
229 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
230 face of package deletion.
231 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
232 pathname. (reported by David Tolpin on c.l.l)
233 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
234 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
235 STRING-STREAM and FILE-STREAM, respectively.
236 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
237 than previously; in addition, its test suite is now run on build.
238 (thanks to Luke Gorrie)
239 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
240 * optimization: added a immediate representation for single-floats
242 * fixed some bugs revealed by Paul Dietz' test suite:
243 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
244 ** attempting to create a package with a colliding nickname causes
245 correctable errors to be signalled.
246 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
247 ** several x86-64 backend bugs related to sign-extension of immediate
250 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
251 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
252 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
254 * fixed loading of multiply forward-referenced layouts.
255 (thanks to Cheuksan Wang)
256 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
257 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
258 (see COMPILE-FILE documentation for details of :PRINT option)
259 * fixed bugs 19 and 317: fixed-format floating point printing is
260 more accurate. This also fixes a bug reported by Adam Warner
261 related to the ~@F format directive.
262 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
264 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
265 dispatch table if the from-char is a dispatch macro character.
266 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
267 by the wordsize no longer ignore the last word. (reported by Lutz
269 * fixed bug in type checking of dynamic-extent variables. (reported
271 * optimization: sequence traversal functions use their freedom to
272 coerce function designators to functions.
273 * optimization: code with many calls to CLOS methods specialized on
274 CLOS classes has had redundant type checks removed.
275 * optimization: added declarations to speed up operations that access
276 the internal character database (for example STRING-UPCASE)
277 * optimization: comparison operations between floats and sufficiently small
278 fixnums no longer create extra rationals
279 * fixed some bugs related to Unicode integration:
280 ** portions of multibyte characters at the end of buffers for
281 character-based file input are correctly transferred to the
282 start of the buffer at the next read.
283 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
284 passing it through to OPEN.
285 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
286 argument given to internal calls to OPEN.
287 ** the built-in comment readers (introduced by character sequences
288 ";" and "#|") are more forgiving to encoding errors; they will
289 STYLE-WARN and then attempt to resync the stream at a character
290 boundary. (thanks to Teemu Kalvas)
291 * fixed some bugs in the x86-64 port:
292 ** Negative short int return values from c-calls are sign-extended
294 ** The stack is aligned to 16-bytes for c-calls, as required by
295 the ABI. (thanks to Cheuksan Wang)
296 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
297 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
298 for enums. (thanks to Vincent Arkesteijn)
299 ** Multiple small optimizations and bugfixes for floating point
301 * fixed some bugs revealed by Paul Dietz' test suite:
302 ** Space, Tab, Linefeed, Return and Page have the invalid
303 secondary constituent character trait.
304 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
306 ** WITH-INPUT-FROM-STRING should only update the index place on
308 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
310 ** Bit-array operations (BIT-AND and similar) worked incorrectly
311 with one-dimensional arrays with fill pointers.
312 ** TYPE-OF failed on a complex with an integer realpart and a
314 ** compiler failure during type inference for the code of form
315 (IF (EQL X (THE ...)) ...) (MISC.535).
317 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
318 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
319 platform. The port supports 61-bit fixnums, large memory spaces
320 and reloading shared object files.
321 * enhancement: saving cores with foreign code loaded is now
322 supported on ppc/Darwin in addition to the previously supported
324 * enhancement: the statistical profiler now walks deeper into the
325 call stack for more meaningful call-graphs and accrued time
326 reports (x86/x86-64 only). It also now reports time spent in
328 * enhancement: it is now possible to trace most individual methods
329 of a generic function in addition to tracing the generic function
331 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
333 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
334 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
335 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
336 produces an error. (thanks to Vincent Arkesteijn)
337 * bug fix: NAMESTRING on pathnames with :WILD components in their
338 directories works correctly. (thanks to Artem V. Andreev)
339 * fixed bug 125: compiler preserves identity of closures. (reported
341 * bug fixed: functions with &REST arguments sometimes failed with
342 "Undefined function" when compiled with (DEBUG 3). (reported by
344 * bug fix: overflow during compiling of setting element of a bit
345 vector with constant index and value. (reported by Timmy Douglas)
346 * build fix: fixed the dependence on *LOAD-PATHNAME* and
347 *COMPILE-FILE-PATHNAME* being absolute pathnames.
348 * on x86 compiler partially supports stack allocation of dynamic-extent
350 * GO and RETURN-FROM do not check the extent of their exit points
351 when compiled with SAFETY 0.
352 * fixed some bugs related to Unicode integration:
353 ** encoding and decoding errors are now much more robustly
354 handled; it should now be possible to recover even from invalid
355 input or output to the terminal. (thanks to Teemu Kalvas)
356 ** provided a first cut at implementing STRING-TO-OCTETS and
357 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
358 ** altered the SB-MD5 contributed module slightly, changing the
359 interface just enough for it to be supportable for builds where
360 lisp characters are not eight bits.
361 * fixed some bugs revealed by Paul Dietz' test suite:
362 ** the FORMATTER-generated functions for ~V[ conditionals require
363 the correct number of arguments.
364 ** READ-FROM-STRING returns the mandated second value when applied
365 to displaced strings.
366 ** the #\Rubout and #\Backspace characters are treated as invalid
367 constituent characters by the tokenizer.
369 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
370 * new feature: reloading changed shared object files with
371 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
372 * new feature: references to foreign variables and functions
373 can now be compiled and loaded before the corresponding shared
374 object file is loaded, as long as the foreign definitions are
375 available at runtime.
376 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
377 supported. (thanks to Dan Debertin)
378 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
379 just keywords. (thanks to Vincent Arkesteijn)
380 * fixed bug #331: structure-class instances corresponding to
381 DEFSTRUCT forms are now created eagerly.
382 * fixed bug #345: backtraces from calls to undefined functions work
383 on x86 as well. Related bug #61 is now also partially fixed on x86
384 (backtraces from throws to unknown catch tags.)
385 * bug fix: lambda-list parsing is now stricter vrt. order and number
386 of lambda-list keywords.
387 * bug fix: as specified by AMOP, an error is signalled if a
388 class-option appears multiple times in a DEFCLASS form. (reported
390 * bug fix: RANDOM can be compiled when the compiler derives the type
391 of its numeric argument as a disjoint set of small integers.
392 (reported by Paul Dietz)
393 * bug fix: starting a core saved with shared objects loaded when
394 those objects are not available no longer causes threaded SBCL to
395 hang. (reported by Sean Ross)
396 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
398 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
399 argument, which must always be NIL. (reported by Kalle Niemitalo)
400 * bug fix: printing 1.0d+23 no longer results in an error.
401 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
402 * bug fix: structure slot setters preserve evaluation order. (thanks
404 * fixed some bugs related to Unicode integration:
405 ** RUN-PROGRAM can allow its child to take input from a Lisp
406 stream. (reported by Stefan Scholl)
407 ** ASDF-INSTALL successfully downloads .tar.gz files in all
408 locales. (reported by Ken Causey)
409 * fixed some bugs revealed by Paul Dietz' test suite:
410 ** INCF, DECF and REMF evaluate their place form as specified in
412 ** FORMATTER expands ~{ ~} iteration directives with V or #
413 parameters correctly.
414 ** FORMATTER deals with the ~@[ ~] conditional directive where the
415 consequent uses no arguments correctly.
416 ** the system has a partial understanding of the (COMPLEX RATIO)
418 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
421 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
422 * new feature: a build-time option (controlled by the :SB-UNICODE
423 keyword feature, enabled by default) for building the system with
424 support for the entire 21-bit character space defined by the
426 * new feature: the system now has rudimentary external-format
427 support; the primary user-visible change at this time is that
428 characters with the high bit set (such as lower-case-e-acute) will
429 print correctly to a terminal in a UTF-8 environment.
430 * minor incompatible change: BASE-CHAR no longer names a class;
431 however, CHARACTER continues to do so, as required by ANSI.
432 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
433 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
434 has been moved to the SB-EXT package (temporarily re-exported from
436 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
437 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
439 * fixed bug #351: better error-handlind and reporting for malformed
441 * fixed bug #350: bignum-printing is now more memory-efficient,
442 allowing printing of very large bignums, eg. (expt 2 10000000).
443 (reported by Bruno Haible)
444 * fixed bug #302: better primitive-type selection for intersection
446 * fixed bug #308: non-graphic characters now all have names, as
447 required. (reported by Bruno Haible)
448 * bug fix: redefining a class with different superclasses now correctly
449 removes it from the direct-subclasses of its previous superclasses.
450 (reported by David Morse)
451 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
452 new value now works. (reported by Bruno Haible)
453 * bug fix: correct canonicalization of multiple non-standard slot
454 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
455 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
456 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
457 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
458 now exists, an signals an error.
459 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
460 during macroexpansion for non-iteration variables as well. (reported
461 by Bruno Haible for CMUCL)
462 * bug fix: Cyclic structures and unprintable objects in compiler
463 messages no longer cause errors. (reported by Bruno Haible)
464 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
465 and READ-FROM-STRING all now return a primary value of NIL if
466 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
467 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
468 (reported by Bruno Haible for CMUCL)
469 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
470 do not designate a condition. (reported by Bruno Haible for
472 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
473 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
474 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
475 permitting resolution in favour of any of the conflicting symbols.
476 (reported by Bruno Haible for CMUCL)
477 * bug fix: EQUAL compiler optimizations is less aggressive on
478 strings which can potentially compare true despite having distinct
479 specialized array element types.
480 * bug fix: unit enumerations can be defined without dividing by
481 zero. (thanks to Vincent Arkesteijn)
482 * FORMAT compile-time argument count checking has been enhanced.
483 (report from Bruno Haible for CMUCL)
484 * a partial workaround for the bug 262: the compiler does not try to
485 inline-expand a local function doing RETURN-FROM from a deleted
486 BLOCK. (thanks to Peter Denno for the bug report and to David
487 Wragg for the simple test case)
488 * fixed some bugs revealed by Paul Dietz' test suite:
489 ** RENAME-PACKAGE allows all package designators as new package
491 ** constraint propagation and lambda variable substitution are
492 more cautious in dealing with partially deleted code.
493 ** compiler sometimes lost reoptimization passes.
494 ** CERROR, given a condition as condition designator, passes its
495 remaining arguments to the continue format control without
497 ** Case-altering FORMAT directives work correctly on non-ASCII
499 ** The REAL type specifier handles bounds outside the floating
500 point ranges without signalling FLOATING-POINT-OVERFLOW.
501 ** Functions with IR1-transformations can create intercomponent
502 references to global functions.
503 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
505 ** FORMAT ~R treats a nil value for its first parameter correctly.
507 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
508 * enhancement: saving cores with foreign code loaded is now
509 supported on x86/NetBSD and sparc/Linux in addition to the previously
511 * bug fix: on some platforms repeated installations caused multiple
512 copies of HTML documentation to be installed -- should not happen
513 any more. (reported by Stefan Scholl)
514 * bug fix: parsing self-recursive alien record types multiple times
515 no longer causes infinite recursion. (reported by Thomas F. Burdick,
516 original patch by Helmut Eller for CMUCL)
517 * bug fix: stack-exhaustion detection works now on NetBSD as well.
518 (thanks to Richard Kreuter)
519 * bug fix: defining classes whose accessors are methods on existing
520 generic functions in other (locked) packages no longer signals
521 bogus package lock violations. (reported by François-René Rideau)
522 * bug fix: special variables as DEFMETHOD parameters no longer have
523 associated bogus type declarations. (reported by David Wragg and
525 * bug fix: read-write consistency on streams of element-type
526 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
527 * bug fix: redefiniton of the only method of a generic function with
528 no DEFGENERIC no longer emits a full WARNING. In addition,
529 redefinition of generic functions with no DEFGENERIC to an
530 incompatible lambda list now signals an error. (thanks to Zach
532 * bug fix: DEFGENERIC now works even when there's a function of the
533 same name in an enclosing lexical environment. (thanks to Zach
535 * fixed compiler failure, caused by instrumenting code during
536 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
537 * optimization: added loop analysis and improved register allocation
538 * fixed some bugs revealed by Paul Dietz' test suite:
539 ** POSITION on displaced vectors with non-zero displacement
540 returns the right answer.
541 ** (SIMPLE-STRING) is a valid type specifier for sequence
543 ** *PRINT-LEVEL* handling for slotless structures is pedantically
545 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
546 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
548 ** The justification version of the FORMAT ~< directive treats
549 non-zero minpad parameter correctly.
551 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
552 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
553 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
554 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
555 the supported interface.
556 * new feature: Single-stepping of code compiled with DEBUG 2 or
557 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
558 * new feature: saving cores with foreign code loaded is now
559 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
560 Timothy Moore's work for CMUCL)
561 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
562 parameters to * instead of NIL if no initform is supplied.
563 (reported by Johan Bockgaard)
564 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
565 correctly when FUNCALL appears as the car of the form. Note:
566 despite this FUNCALL forms are not currently subject to
567 compiler-macro expansion. (port of Raymond Toy's fix for the
568 same from CMUCL, reported by Johan Bockgaard)
569 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
570 (thanks for Teemu Kalvas)
571 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
572 case instead of terminating the iteration (thanks for Julian
573 Squires, Sean Champ and Raymond Toy)
574 * bug fix: incorrect expansion of defgeneric that caused a style
575 warning. (thanks for Zach Beane)
576 * bug fix: slot accessor effective method computation works properly
577 for classes with multiple non-standard applicable methods on
578 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
579 * on x86 compiler supports stack allocation of results of LIST and
580 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
581 CMUCL implementation by Gerd Moellmann)
582 * fixed some bugs revealed by Paul Dietz' test suite:
583 ** FORMAT strings with both the ~<~:;~> form of the justification
584 directive and pretty-printing directives cause an error.
586 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
587 * incompatible change: the internal functions
588 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
589 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
590 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
591 instead of the old functions.
592 * new feature: on platforms where "dladdr" is available foreign
593 function names now appear in backtraces. (based on Helmut Eller's
595 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
596 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
598 * documentation: ASDF manual is now distributed with SBCL.
599 * bug fix: SBCL can now load its contributed modules with REQUIRE
600 even if the system-provided entries have been removed from
601 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
603 * bug fix: backtraces involving undefined functions or assembly
604 routines are more informative. (thanks to Brian Downing)
605 * bug fix: mutually referent alien structures now work correctly.
606 (reported by Rick Taube)
607 * bug fix: structures defined by WITH-ALIEN can be referred to
608 within other definitions in the same WITH-ALIEN.
609 * bug fix: division operators (MOD, TRUNCATE and the like) with
610 constant zero divisors and integer dividends no longer generate
612 * bug fix: provide default methods for INPUT-STREAM-P and
613 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
614 * bug fix: improve the detection and resolution of MOP metacycles
615 (where effective method computation depends on the generic function
616 having its effective method computed). (reported by Bruno Haible)
617 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
618 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
619 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
620 * bug fix: pathnames with relative directory components can be
621 represented relative to default pathnames.
622 * optimization: in taking the GCD of bignums, reduce the two bignums
623 to approximately the same size (using Euclid's algorithm) before
624 applying the more sophisticated binary GCD. (thanks to Juho
626 * optimization: COUNT on bitvectors now operates word-at-a-time.
627 * optimization: ASH with a positive, but not necessarily constant,
628 (leftwards) shift, when in a modular context, is compiled to a
630 * fixed some bugs revealed by Paul Dietz' test suite:
631 ** FORMAT variable parameters ("~V<char>") are defaulted properly
632 if the corresponding argument is NIL.
633 ** FORMAT directives accepting a minpad parameter treat negative
635 ** literal commas as character parameters to FORMAT directives are
637 ** literal spaces directly after ~<Newline> directives within a
638 format-logical-block (~:< ~@:>) do not induce :FILL-style
639 conditional newlines.
640 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
641 as specified: it no longer includes conditional newlines).
642 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
644 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
645 :PER-LINE-PREFIX argument does not evaluate to a string.
647 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
648 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
649 the manual for details; for now, package locks can be disabled by
650 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
651 if no major problems are found then it is likely that they will be
652 compiled in unconditionally.
653 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
654 unsupported operators on all platforms. To load a shared library
655 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
656 object file, link it into a shared library outside of SBCL and
657 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
659 * bug workaround: ROOM T and the GC were not working together
660 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
661 reporting facility aren't preserved. That reporting has been
662 disabled, so now until and unless someone figures out how to make it
663 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
664 * minor incompatible change: as threatened around sbcl-0.8.0, the
665 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
666 The symbols are also exported from SB-PCL for backwards
667 compatibility, but more so than before SB-PCL should be treated as
668 an implementation-internal package.
669 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
671 * the SB-SPROF contrib now works on (most) non-x86 architectures.
672 It is known as of this release not to work on the Alpha, however.
673 * fixed bug #167: errors signalled due to illegal syntax in method
674 bodies are now more legible.
675 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
676 designators and can hence be used with TYPEP.
677 * fixed bug #333: CHECK-TYPE now ensures that the type error
678 signalled, if any, has the right object to be accessed by
679 TYPE-ERROR-DATUM. (reported by Tony Martinez)
680 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
681 5.1.2.3 for multiple-value place subforms. (reported by Kalle
683 * fixed bug #334: programmatic addition of slots using specialized
684 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
685 and :ALLOCATION :CLASS slots.
686 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
687 float exponents. (rereported by Peter Seibel)
688 * fixed a bug: #\Space (and other whitespace characters) are no
689 longer considered to be macro characters in standard syntax by
691 * fixed bug: initialization of condition class metaobjects no longer
692 causes an instance of the condition to be created. (reported by
694 * fixed bug: it is now possible to have slots such that
695 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
696 description is neither :INSTANCE nor :CLASS.
697 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
698 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
699 SLOT-VALUE-USING-CLASS), and no longer causes errors with
700 non-standard SLOT-DEFINITION-ALLOCATION values.
701 * fixed bugs: various race conditions handling exiting threads.
702 CL-PPCRE's thread torture test now passes.
703 * fixed arguably-a-bug: GC time proportional to number of threads in
704 system even when most of them are idle
705 * optimization: improved performance of BIT and SBIT on bit-vectors.
706 * .fasl file incompatibility: The fasl file version number has
707 been incremented because of changes associated with package locks.
709 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
710 * minor incompatible change: the system no longer provides
711 optimization hints (conditions which are TYPEP
712 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
713 mode; these hints are still emitted when higher SPEED optimization
715 * new contrib module: a sampling profiler (profiling by statistical
716 sampling, rather than by instrumenting functions) is available as
717 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
718 * the behaviour of the standard function ED is now customizeable by
719 third parties through a hook variable: see ED's documentation
720 string for information on the protocol.
721 * the compiler no longer emits efficiency notes for (FUNCALL X)
722 when the type of X is uncertain under default optimization
724 * fixed bug 276: mutating a binding of a specialized parameter to a
725 method to something that is not TYPEP the specializer is now
727 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
728 exhibit the required behaviour on the x86 platform. (thanks to
729 Peter van Eynde, Eric Marsden and Bruno Haible)
730 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
731 even for difficult arguments. (reported by Peter Graves)
732 * fixed bug 141a: the backquote printer now descends quoted
734 * fixed another bug in backquote printing: no more destructive
735 modification of the form's list structure. (reported by Brian
737 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
738 move between its address being taken and the call to
739 interrupt_thread, fixing a crashing race condition.
740 * the SB-POSIX contrib implementation has been adjusted so that it
741 no longer exhibits ridiculously poor performance when constructing
742 instances corresponding to C structs.
744 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
745 * minor incompatible change: the sb-grovel contrib now treats C
746 structures as alien (in the sense of SB-ALIEN) objects rather than
747 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
748 has implications for memory management of client code
749 (sb-grovel-returned objects must now be manually managed) and for
750 type safety (alien objects now have full types).
751 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
752 used to control emission of compiler diagnostics, rather than the
753 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
754 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
755 quality should be considered deprecated.
756 * install.sh now installs the user manual as well
757 * (not quite a new documentable feature, but worth considering in
758 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
759 beginnings of a semantically meaningful condition hierarchy is
760 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
762 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
763 designator as the defaults argument.
764 * fixed bug: Displaced arrays whose displaced-to array has become
765 too small now cause ARRAY-DIMENSION to signal an error, providing
766 for safer bounds-checking. (reported by Bruno Haible)
767 * fixed bug: DEFCLASS slot definitions with identical :READER and
768 :WRITER names now signal a reasonable error. (reported by Thomas
770 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
772 * fixed bug: Invalid slot specification errors now print correctly.
773 (thanks to Zach Beane)
774 * fixed bug 320: Shared to local slot value transfers in class
775 redefinitions now happen corrently from superclasses as
776 well. (reported by Bruno Haible)
777 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
779 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
780 improper lists correctly. (reported by Bruno Haible)
781 * fixed bug 313: source-transform for <fun-name> was erroneously
782 applied to a call of a value of a variable with name <fun-name>.
783 (reported by Antonio Menezes Leitao)
784 * fixed bug 307: The obsolete instance protocol ensures that
785 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
786 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
787 remove dead unknown-values globs from the middle of the stack.
788 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
789 easier to resume long computations after using *BREAK-ON-SIGNALS*
790 to diagnose and fix failures. (thanks to Nikodemus Siivola)
791 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
792 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
793 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
794 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
795 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
797 * fixed a (fairly theoretical) bug in string printing: if
798 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
799 does not have array-element-type equal to the most general string
801 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
802 function name. (thanks to Nikodemus Siivola)
803 * fixed bug: compile-time format string checker failed on
804 non-closed ~{. (reported by Thomas F Burdick)
805 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
806 don't warn on legal loop code involving more than one aggregate
807 boolean. (thanks to Nikodemus Siivola)
808 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
809 in keyword position to MAKE-PACKAGE was not being reported as
811 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
812 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
814 * fixed bugs 280 and 312: the checking for multiple definitions in a
815 file is less likely to become confused by uses of inline
817 * fixed bug: the #S reader macro performs the keyword coercion
818 specified for slot names. (reported by Kalle Niemitalo)
819 * fixed bug: lambda lists may contain symbols whose names start with
820 & but are not lambda-list-keywords; their occurrence triggers a
822 * fixed bug 321: define-method-combination argument lambda lists do
823 not cause invalid code to be generated when &optional or &aux
824 variables have default values. (reported by Bruno Haible)
825 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
826 have CLOS classes; this appears also to have fixed reported
827 instability in stack exhaustion detection.
828 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
829 MUFFLE-WARNING when no associated restart is present is now
831 * optimization: rearranged the expansion of various defining macros
832 so that each expands into only one top-level form in a
833 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
835 * optimization: used a previously little-used slot in symbols to
836 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
838 * fixed some bugs revealed by Paul Dietz' test suite:
839 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
841 ** Fixed an optimization bug related to inheritance of initforms
842 from local to shared slots.
843 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
844 ** CAST optimizer forgot to flush argument derived type.
845 ** print/read consistency on floats is now orders of magnitude
846 more likely. (thanks also to Bruno Haible for a similar report
848 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
849 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
850 for objects of type REAL. Make it so.
851 ** SXHASH is specified (infelicitously) to respect similarity,
852 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
853 it so. (thanks to Markus Ziegler)
854 ** on the Alpha, the compiler succeeds in compiling functions
855 returning a known number of arguments greater than 63.
856 ** fixed handling of invalid NIL arguments in keyword position
858 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
860 ** provided a readably-printable representation for RANDOM-STATE
862 ** ensured that pathnames, where they have a namestring, always
863 print using #P"..." syntax.
865 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
866 * Support for the forthcoming 2.0 version of the NetBSD kernel
867 running on x86 hardware has been added. (thanks to Perry
868 E. Metzger most immediately, and others for their past work)
869 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
870 current release version; SBCL's OpenBSD support had been broken
871 since about the time of OpenBSD's switch to ELF binary format.)
872 * [placeholder for DX summary]
873 ** user code with &REST lists declared dynamic-extent, under high
874 speed or space and low safety and debug optimization policy.
875 * The manual has been converted to Texinfo format and the debugger
876 chapter from the cmucl manual has been added.
877 * A facility has been added to extract documentation strings from
878 sbcl and store them as Texinfo-formatted snippets for inclusion in
879 the manual (via Texinfo's @include directive)
880 * bug fix: compiler emitted division in optimized DEREF. (thanks for
881 the test case to Dave Roberts)
882 * bug fix: multidimensional simple arrays loaded from FASLs had fill
883 pointers. (reported by Sean Ross)
884 * bug fix: PROFILE output is printed nicely even for large numerical
885 values. (thanks to Zach Beane)
886 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
887 greater than 32 handle EOF correctly.
888 * bug fix: on X86 an immediate argument of the IMUL instruction is
889 correctly printed in disassembly. (thanks to Lutz Euler)
890 * bug fix: class slots in redefined classes preserve their old
891 values. (thanks to Bruno Haible and Nikodemus Siivola)
892 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
893 succeeds. (reported by Marco Baringer)
894 * fixed some bugs revealed by Paul Dietz' test suite:
895 ** READ-SEQUENCE now works on ECHO-STREAMs.
896 ** RATIONALIZE works more according to its specification. (thanks
899 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
900 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
901 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
902 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
903 should matter to you only if you rebind the printer control
904 variables and then find you want different bindings in the
905 debugger than in the ordinary execution of your program.)
906 * The runtime build system has been tweaked to support building
907 (on SPARC/SunOS) using a C compiler which invokes Sun's own
908 assembler and linker. (thanks to Nikodemus Siivola)
909 * Unbound, undefined, undeclared variables now trigger full
910 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
911 more often programmer error than deliberate exploitation of undefined
913 * optimization: the hash algorithm for strings has changed to one
914 that is less vulnerable to spurious collisions. (thanks to Juho
916 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
917 needless bounds checking. (thanks to Juho Snellman)
918 * optimization: implemented multiplication as a modular
919 (UNSIGNED-BYTE 32) operation on the PPC backend.
920 * fixed some bugs revealed by Paul Dietz' test suite:
921 ** ADJUST-ARRAY now copies the datum in a zero rank array if
923 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
924 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
925 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
927 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
929 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
931 ** ECHO-STREAMs no longer attempt to echo the end of file value to
932 their output stream on EOF from read.
933 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
934 have been read to end-of-file.
935 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
937 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
938 description of determination of which consecutive characters
940 ** Printing the "Space" character with escaping on now yields "#\\ ",
941 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
942 ** Reading floating-point numbers with *READ-BASE* set to a number
943 less than 10 works correctly.
944 ** Reading floating-point numbers with *READ-BASE* set to a number
945 more than 10 works correctly.
946 ** Printing with *PRINT-READABLY* targets the standard readtable, not
947 the readtable currently in effect.
949 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
950 * minor incompatible change: parsing of namestrings on a physical
951 (Unix) host has changed; numbers after the final #\. in a
952 namestring are no longer interpreted as a version field. This is
953 intented to be largely invisible to the user, except that the
954 meaning of the namestring "*.*.*" has changed: it now refers to a
955 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
956 should usually be replaced by
957 (make-pathname :name :wild :type :wild :version :wild)
958 with the added benefit that this is more likely to be portable.
959 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
960 option to OPEN now signals an error if the file being opened
961 exists; this may have an impact on existing code.
962 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
963 signals received, on the PowerPC platforms (both Linux and
964 Darwin). (thanks to Pierre Mai for pointing out the location of
966 * several fixes on OS X: The system now builds and runs cleanly on
967 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
968 (thanks to Brian Mastenbrook)
969 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
970 second-resolution: integer multiples of 1/3600 between -24 and 24.
971 (thanks to Vincent Arkesteijn)
972 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
973 type when called with 1 argument; PEEK-CHAR checked type of
974 PEEK-TYPE only after having read first character from a
975 stream. (reported by Peter Graves)
976 * bug fix: the garbage collector now has much better locality
977 behaviour, and in particular no longer treats all memory as being
978 exhausted when many small objects point to each other in a deeply
980 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
981 recognized as being TYPEP their class.
982 * bug fix: the PUSHNEW documentation string has been corrected.
983 (thanks to Vincent Arkesteijn)
984 * bug fix: defaulting of the value for the last of an atypically
985 large number of multiple values being bound was not being
986 performed correctly on the Alpha or PPC platforms
987 * optimization: implemented multiplication as a modular
988 (UNSIGNED-BYTE 32) operation on the x86 backend.
989 * optimization: SEARCH on simple-base-strings can now be open-coded.
990 (see also contrib/compiler-extras.lisp for inspiration for
991 teaching the compiler about the Boyer-Moore algorithm).
992 * value, returned by MAX (and MIN) called with several EQUALP, but
993 not EQL, arguments now does not depend on compiler settings.
994 * fixed some bugs revealed by Paul Dietz' test suite:
995 ** in stack analysis liveness information is propagated from
996 non-local entry points.
997 ** pathwise CAST removing failed when the CAST node did not start
999 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1000 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1002 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1003 host is already defined.
1004 ** RENAME-FILE works on streams instead of signalling an internal
1006 ** PEEK-CHAR uses the current readtable when determining whether
1007 or not a character is whitespace.
1008 ** MERGE-PATHNAMES handles the case when the pathname does not
1009 specify a name while the default-pathname specifies a version.
1010 ** Pathnames now stand a better chance of respecting print/read
1012 ** Attempting to use standardized file system operators with a
1013 pathname with invalid :DIRECTORY components signals a
1015 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1017 ** DIRECTORY on logical pathnames is more correct.
1018 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1019 signal a TYPE-ERROR if their argument is not a stream.
1020 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1021 designator argument does not designate a stream.
1022 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1023 examining the synonym.
1024 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1026 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1027 element-type larger than ([UN]SIGNED-BYTE 32).
1029 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1030 * When built with the :SB-FUTEX feature, threaded builds now take
1031 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1032 for faster/more reliable mutex and condition variable support.
1033 * Incompatible change (but one you probably shouldn't have been using
1034 anyway): the interface and code for arbitrating between multiple
1035 threads in the same user session has been redesigned.
1036 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1037 error when called without an explicit environment argument.
1038 (thanks to Nikodemus Siivola)
1039 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1040 confused about their position. (thanks to Adam Warner and Gerd
1042 * bug fix: Pretty printing backquoted forms with unquotations in the
1043 argument list position of various code constructs such as LAMBDA
1044 now works correctly. (reported by Paul Dietz)
1045 * bug fix: Pretty printing unquotations no longer loses all
1046 stream position information.
1047 * optimization: performance of string output streams is now less
1048 poor for multiple small sequence writes.
1049 * optimization: performance of CSUBTYPEP in the presence of complex
1050 expressions involving CONS and NOT many times has been improved.
1051 (reported by Paul Dietz)
1052 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1054 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1055 streams for the REPL, for the debugger, and so on. (thanks to
1057 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1058 * fixed some bugs revealed by Paul Dietz' test suite:
1059 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1060 is ignored if it is too small, rather than propagating through
1061 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1062 ** extremely complex negations of CONS types were not being
1063 sufficiently canonicalized, leading to inconsistencies in
1065 ** VALUES tranformer lost derived type.
1067 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1068 * fixed a bootstrapping bug: the build process no longer assumes
1069 that the various BOOLE-related constants have the same value in
1070 host and target lisps. (noted by Paul Dietz' test suite on an
1071 SBCL binary built from CLISP)
1072 * The system can now be dynamically linked on the MIPS platform,
1073 which enables dynamic loading of foreign code from Lisp. (thanks
1074 to Ralf Baechle for discussions on the MIPS ABI)
1075 * The system now records debugging information for its own source
1076 files in a filesystem-position-independent manner, relative to
1077 the "SYS" logical host.
1078 * fixed a compiler bug: MV-LET convertion did not check references
1079 to the "max args" entry point. (reported by Brian Downing)
1080 * tweaked disassembly notes to be less confident about proclaiming
1081 some instruction as an LRA. (thanks to Brian Downing)
1082 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1083 now each have their own history, command character, and other
1084 characteristics. (thanks to David Lichteblau)
1085 * fixed some bugs revealed by Paul Dietz' test suite:
1086 ** compiler failure in compiling LOGAND expressions including a
1088 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1089 shift greater than 32.
1090 ** FLUSH-DEST did not mark blocks for type check regeneration.
1091 ** HANDLER-CASE failed to accept declarations in handler clauses
1092 in some circumstances.
1094 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1095 * New code in contrib/sb-introspect (still probably not entirely
1096 stable yet) provides some support for smart Lisp development
1097 environments like SLIME.
1098 * The conditions signalled for errors occurring when loading .fasl
1099 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1100 in a way which should help ASDF recover gracefully.
1101 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1102 stuff has been cleaned up. If you code contrib/ stuff, this might
1103 affect you, and you can look at contrib/README, contrib/STANDARDS,
1104 and/or the 0.8.4.27 diff to check.
1105 * In full calls the compiler now does not generate checks for declared
1106 argument types for all arguments.
1107 * various threading fixes
1108 ** and some experimental patches which didn't make it into
1109 the main tree for this release, but which are shipped in
1110 contrib/experimental-thread.patch as a possible fix for some
1111 failures (deadlock, spinning...) in GC-intensive multithreaded
1113 * fixed PPC build problem (source code incompatibility of different
1114 library versions): added offsetof() hackery which attempts to divine
1115 where glibc maintainers put uc_mcontext today
1116 * fixed bug 282: compiler does not trust type assertions while passing
1117 arguments to a full call.
1118 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1119 &OPTIONAL VALUES type parameter.
1120 * fix bug 214: algorithm for noting rejected templates is now more
1121 similar to that of template seletion. (also reported by rydis on
1123 * fixed bug 141b: printing backquoted information readably and prettily
1124 inserts a space where necessary.
1125 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1126 (CHARACTER 10) are now reported as errors, rather than propagated
1127 as unknown types. (reported by piso on #lisp)
1128 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1129 with values NIL and :ERROR. (thanks to Milan Zamazal)
1130 * fixed bug 191c: CLOS now does proper keyword argument checking as
1131 described in CLHS 7.6.5 and 7.6.5.1.
1132 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1133 longer raise an error; further, using a list as a for-as-arithmetic
1134 counter now raises a meaningful error.
1135 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1136 now understood by sequence creation functions such as MAKE-SEQUENCE
1138 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1139 a STRING-INPUT-STREAM.
1140 * compiler enhancement: SIGNUM is now better able to derive the type
1142 * type declarations inside WITH-SLOTS are checked. (reported by
1144 * fixed some bugs revealed by Paul Dietz' test suite:
1145 ** incorrect optimization of TRUNCATE for a positive first
1146 argument and negative second.
1147 ** compiler failure in let-convertion during flushing dead code.
1148 ** compiler failure while deriving type of TRUNCATE on an
1149 interval, containing 0.
1150 ** ASH of a negative bignum by a negative bignum count now returns
1152 ** intersection of CONS types now canonicalizes properly, fixing
1153 inconsistencies in SUBTYPEP.
1155 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1156 * incompatible change: The --disable-debugger command line
1157 option now clobbers the debugger at a more fundamental
1158 level, by redefining #'INVOKE-DEBUGGER instead of by
1159 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1160 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1161 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1162 enter the debugger REPL and then suffer recursive errors
1163 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1164 while under the new system, BREAK in --disable-debugger mode
1165 terminates the system just as an unhandled error would.
1166 * fixed compiler performance when processing loops with a step >1;
1167 * bug fix: DOCUMENTATION now retrieves generic function
1168 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1169 support has been systematized, and now supports the methods
1170 specified by ANSI, along with a default method and a method for
1171 slot documentation. (reported by Nathan Froyd)
1172 * bug fix: effective methods associated with a generic function are
1173 no longer cached over a change of that generic function's method
1174 combination. (reported by Andreas Fuchs)
1175 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1176 names a non-existent directory. (thanks to Andreas Fuchs)
1177 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1178 the PPC platform, lead to stack corruption; this has been fixed.
1179 (reported by Rainer Joswig)
1180 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1181 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1182 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1183 arithmetic in general, is now much more reliable on the PPC
1185 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1186 platform now returns the right answer.
1187 * optimization: restored some effective method precomputation in
1188 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1189 precomputation is now tunable.
1190 * optimization: compiler-internal data structure use has been
1191 reviewed, and changes have been made that should improve the
1192 performance of the compiler by about 20%.
1193 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1194 simple-base-strings and simple-bit-vectors is improved.
1195 * optimization: the optimization of 32-bit logical and arithmetic
1196 functions introduced in version 0.8.3 on the x86 has been
1197 implemented on the mips, ppc and sparc platforms; an
1198 implementation of the same facility, but for 64-bit arithmetic,
1199 has been added for the alpha.
1200 * microoptimization: the compiler is better able to make use of the
1201 x86 LEA instruction for multiplication by constants.
1202 * bug fix: in some situations compiler did not report usage of
1203 generic arithmetic in (SPEED 3) policy.
1204 * bug 145b fix: compiler used wrong type specifier while converting
1205 MEMBER-types to numeric.
1206 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1208 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1209 index argument now works properly on the Alpha platform.
1210 * bug fix: floating point exception treatment on the Alpha platform
1212 * bug fix: FILE-POSITION works much better on string input and
1213 output streams. (thanks to Nikodemus Siivola)
1214 * bug fix: many threading/garbage collection symptoms sorted.
1215 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1216 might be pseudo-atomic.
1217 * internal change: Stopping for GC is now done with signals not
1218 ptrace. GC is now done in whichever thread wanted it, instead of
1220 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1222 * bug fix: result form in DO is not contained in the implicit
1224 * incompatible change: ICR structure is changed; the value part of
1225 CONTINUATION is now called LVAR; corresponding functions are
1226 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1227 * added type deriver for ISQRT (thanks to Robert E. Brown).
1228 * bug fix: better support for loading from the command line when an
1229 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1231 * fixed some bugs revealed by Paul Dietz' test suite:
1232 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1233 ** ROUND and FROUND now give the right answer when given very
1234 small float arguments.
1235 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1237 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1238 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1239 ** LCM should return a non-negative integer.
1240 ** PARSE-INTEGER returned the index of a terminator instead of the
1241 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1242 ** PARSE-INTEGER returned an incorrect index being applied to a
1244 ** LCM with two arguments of 0 returns 0 rather than signalling
1246 ** unsigned addition of a 32-bit constant with the high bit set no
1247 longer causes an internal compiler error on the x86.
1248 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1249 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1250 with negative last argument.
1251 ** byte specifiers with zero size and position no longer cause
1252 an error during type derivation.
1253 ** bignum multiplication on the Alpha platform now returns the
1255 * porting: The system now builds on SuSE AMD64, although it still
1256 generates a 32-bit binary.
1257 * .fasl file incompatibility: The fasl file version number has
1258 been incremented (because of the changes to internal compiler
1259 data structures referred to above).
1261 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
1262 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
1263 more accurately, on the Darwin kernel running on PowerPC hardware.
1264 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
1265 * Compiler code deletion notes now signal a condition of type
1266 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
1267 an associated MUFFLE-WARNING restart.
1268 * The compiler now performs limited argument count validation of
1269 constant format strings in FORMAT, and where appropriate in ERROR,
1270 CERROR and WARN. (thanks to Gerd Moellmann)
1271 * New ASDF-INSTALL contrib can be used for automatic download and
1272 installation of third-party Lisp code from CCLAN or other sites
1274 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
1275 which forces another thread to execute a function supplied by the
1277 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
1278 now accept and act upon their :ELEMENT-TYPE keyword argument.
1279 (reported by Martin Atzmueller, Edi Weitz)
1280 * bug fix: FILE-POSITION now accepts position designators up to
1281 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
1282 is the greater. (thanks to Patrik Nordebo)
1283 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
1284 Kalle Olavi Niemitalo)
1285 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
1286 printable. (reported by Eric Marsden)
1287 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
1288 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
1289 * x86 bug fix in control stack exhaustion checking: now shows backtrace
1290 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
1291 (thanks to Stig Sandoe)
1292 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
1293 UNREAD-CHAR now correctly includes the unread character in the
1294 target sequence. (thanks to Gerd Moellmann)
1295 * bug fix in threaded builds: the system can now be suspended and
1296 resumed by shell job control with minimal disruption.
1297 * bug fixes in times and timezones >2038AD
1298 * better handling of "where is GNU make?" problem in build scripts
1299 (thanks to Nikodemus Siivola)
1300 * new optimization: inside a named function any reference to a
1301 function with the same name is considered to be a self-reference;
1302 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
1303 optimization quality.
1304 * new optimization on x86: logical functions and + now have
1305 optimized (UNSIGNED-BYTE 32) versions, which are automatically
1306 used when the result is truncated to 32 bits.
1307 * VALUES declaration is partially enabled.
1308 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
1309 * fixed some bugs revealed by Paul Dietz' test suite:
1310 ** The system now obeys the constraint imposed by
1311 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
1312 types form a lattice under type intersection.
1313 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
1314 ** ASSOC now ignores NIL elements in an alist.
1315 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
1316 and (1+ MOST-POSITIVE-FIXNUM) answers.
1317 ** The addition of a method with invalid qualifiers to a generic
1318 function does not cause an error to be signalled immediately;
1319 a warning is signalled, and the error is generated only on
1320 calling the generic function.
1321 * changed .fasl file version number, in part to add type codes for
1322 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
1323 obscure ANSI requirements
1325 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
1326 * fixed bug 148: failure to inline-expand a local function left
1327 garbage, confusing the compiler.
1328 * fixed bugs 3cd: structure slot readers perform type check if the
1329 slot can have an invalid value (i.e. it is either not initialized
1330 or can be written with a less specific slot writer).
1331 * bug fix: the compiler now traps array references to elements off
1332 the end of an array; previously, the bounds checking in some
1333 circumstances could go off-by-one.
1334 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
1336 * type declarations for array element types now obey the description
1337 on the CLHS page "Declaration TYPE", as per discussions on
1338 sbcl-help around 2003-05-08. This means that a declaration
1339 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
1340 declaration, all references to BAR will be asserted or assumed
1341 (with THE, so dependent on compiler policy) to involve objects of
1342 type FOO. Note that no such declaration is implied in
1343 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
1344 * declared types of functions from the "Conditions"
1345 chapter. (reported by Paul Dietz)
1346 * bug fix: CERROR accepts a function as its first argument.
1347 * bug fix: NTH an NTHCDR accept a bignum as index
1348 arguments. (reported by Adam Warner)
1349 * optimization: character compare routines now optimize comparing
1350 against a constant character. (reported by Gilbert Baumann)
1351 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
1352 argument now works properly on the MIPS platform.
1353 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
1354 * repeated evaluation of the same DEFSTRUCT, a slot of which is
1355 declared to have a functional type, does not cause an error
1357 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
1358 many :DEFAULT-INITARGS. (reported by Istvan Marko)
1359 * fixed bug: if last continuation of a deleted block has a
1360 destination, this destination should be deleted too. (reported by
1362 * fixed a bug in the bootstrap process: the host compiler's values
1363 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
1364 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
1365 test case from Patrik Nordebo)
1366 * improved the ability of the disassembler on the PPC platform to
1367 provide helpful disassembly notes.
1368 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
1369 the class in more cases than previously.
1370 * bug fix: FILE-POSITION now understands :START and :END for
1371 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
1372 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
1373 8) data. (thanks to David Lichteblau)
1374 * bug fix: it is possible to add a method to a generic function
1375 without lambda list.
1376 * bug fix: reader failed to signal END-OF-FILE inside an
1377 object representation. (reported by Nikodemus Siivola)
1378 * fixed some bugs revealed by Paul Dietz' test suite:
1379 ** LAST and [N]BUTLAST should accept a bignum.
1380 ** condition slot accessors are methods.
1381 ** (VECTOR NIL) is a subtype of STRING.
1383 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
1384 * minor incompatible change: some nonsensical specialized lambda
1385 lists (used in DEFMETHOD) which were previously ignored now signal
1387 * minor incompatible change: the system is now aware of the types of
1388 variables in the COMMON-LISP package, and will signal errors for
1389 most violations of these type constraints (where previously they
1390 were silently accepted).
1391 * minor incompatible change: COMPILE-FILE now uses the freedom
1392 afforded (ANSI 3.2.2.3) to use derived function types for
1393 functions defined in the same file. This also permits the system
1394 to warn on static type mismatches and function
1395 redefinition. (Currently it does not work with high DEBUG level.)
1396 * minor incompatible change: VALUES declaration is disabled.
1397 * When issuing notes, the compiler now signals a condition of type
1398 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
1399 restart for use in user handlers. It is expected that the
1400 COMPILER-NOTE condition will eventually become a condition
1401 supertype to a hierarchy of note types, which will then be
1402 handleable in a similar fashion. However, at the moment, no such
1403 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
1404 but it's an implementation detail, not a classification for the
1406 * Changes in type checking closed the following bugs:
1407 ** type checking of unused values (192b, 194d, 203);
1408 ** template selection based on unsafe type assertions (192c, 236);
1409 ** type checking in branches (194bc).
1410 * A short form of VALUES type specifier has ANSI meaning (it has
1411 increased the number of situations when SBCL cannot perform type
1413 * fixed bug in DEFSTRUCT: once again, naming structure slots with
1414 keywords or constants is permissible.
1415 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
1416 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
1417 classes. (thanks to Antonio Martinez)
1418 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
1419 outputs FRESH-LINE or TERPRI, and no longer converts its stream
1420 argument to a pretty-print stream. Instead, it leaves any such
1421 operations to DESCRIBE-OBJECT methods.
1422 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
1424 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
1425 lambda lists. (thanks to David Lichteblau)
1426 * bug fix: Defining a generic function with a :METHOD-CLASS being a
1427 subclass of STANDARD-METHOD no longer causes stack exhaustion.
1428 (thanks to Gerd Moellmann)
1429 * fixed bug 246: increased compilation speed of long
1430 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
1432 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
1434 * DEFCONSTANT now throws a condition of type
1435 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
1436 constant to a non-EQL value; CONTINUE and ABORT restarts
1437 respectively change and preserve the value.
1438 * fixed bug 63: The code walker, part of the implementation of CLOS,
1439 is now better at handling symbol macros.
1440 * bug fix: There is no longer an internal implementation type named
1441 CL:LENGTH. (reported by Raymond Toy)
1442 * bug fix: In macro-like defining macros/special operators the
1443 implicit block does not enclose the lambda list.
1444 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
1445 enclosed in parentheses) are not suitable as type specifiers, and
1446 their use properly signals an error now.
1447 * bug fix: An argument count mismatch for a type specifier in code
1448 being compiled no longer causes an unhandled error at compile
1449 time, but signals a compile-time warning.
1450 * fixed simple vector readable printing
1451 * bug fix: DESCRIBE takes more care over whether the class
1452 precedence list slot of a class is bound before accessing it.
1453 (reported by Markus Krummenacker)
1454 * bug fix: FORMATTER can successfully compile pretty-printer format
1455 strings which use variants of the ~* directive inside.
1456 * bug fix: SEARCH now applies its TEST predicate to the elements of
1457 the arguments in the correct order. (thanks to Wolfhard Buss)
1458 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
1459 in type inference. (thanks to Robert E. Brown)
1460 * bug fix: Reading in symbols with an explicit package name of ""
1461 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
1462 * fixed some bugs revealed by Paul Dietz' test suite:
1463 ** NIL is now allowed as a structure slot name.
1464 ** Arbitrary numbers, not just REALs, are allowed in certain
1465 circumstances in LOOP for-as-arithmetic clauses.
1466 ** Multiple class redefinitions before slot access no longer
1467 causes a type error.
1468 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
1469 association between the name and a class.
1470 ** Generic functions with non-standard method-combination and over
1471 five methods all of which return constants no longer return NIL
1472 after the first few invocations. (thanks to Gerd Moellmann)
1473 ** CALL-NEXT-METHOD with no arguments now passes the original
1474 values of the arguments, even in the presence of assignment.
1475 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
1477 ** DISASSEMBLE works with closures and funcallable instances.
1478 ** ADD-METHOD now returns the generic function, not the new method.
1479 ** FIND-METHOD signals an error if the lengths of the specializers
1480 is incompatible with the generic function, even if the ERRORP
1482 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
1483 which its argument is a member.
1484 ** DEFCLASS only redefines the class named by its class-name
1485 argument if that name is the proper name of the class;
1486 otherwise, it creates a new class.
1487 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
1488 of the UNBOUND-SLOT condition to the name of the slot.
1489 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
1490 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
1491 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
1492 SLOT-MAKUNBOUND in the specified fashion.
1494 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
1495 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
1496 cross-compilation host. As a consequence, we can now bootstrap our
1497 way up to SBCL starting with a bare gcc toolchain and human-readable
1498 source code (first the source to CLISP, then the source to SBCL).
1499 * A contributed module containing a partial implementation of the
1500 simple-streams interface has been included. (thanks to Rudi
1502 * A contributed module implementing the RFC1321 Message Digest
1503 Algorithm, known as MD5, has been included.
1504 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1505 no longer has any effect, as the code controlled by this feature
1506 has been deleted. (As far as we know, no-one has ever built using
1507 this feature, and its semantics were confused in any case).
1508 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
1509 work on conditions (as required by the ANSI specification),
1510 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
1511 expected behaviour on conditions. Users should note, however,
1512 that such behaviour is not required by the ANSI specification,
1513 and so use of this behaviour may render their code unportable.
1514 * fixed some bugs revealed by Paul Dietz' test suite:
1515 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
1517 ** &ENVIRONMENT parameter in macro lambda list is bound first.
1518 ** SXHASH on condition objects no longer returns NIL.
1519 ** :ALLOCATION :CLASS slots are better treated; their values are
1520 updated on class redefinition, and initforms inherited from
1521 superclasses are applied.
1522 ** REMOVE-METHOD returns its generic function argument even when
1523 no method was removed.
1524 ** SHARED-INITIALIZE now initializes the values of the requested
1525 slots, including those with :ALLOCATION :CLASS.
1526 ** ALLOCATE-INSTANCE now works on structure classes defined via
1527 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
1529 ** SLOT-EXISTS-P now works on conditions, as well as structures
1531 ** MAKE-LOAD-FORM now has the required methods on
1532 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
1533 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
1534 keyword, and now implements the SLOT-NAMES argument.
1535 ** methods with &OPTIONAL arguments no longer allow too many
1536 arguments to be passed in the call without error.
1537 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
1538 option is consistent with the required arguments of the generic
1539 function lambda list.
1540 * bug fix: REQUIRE accepts a string designator. (Thanks to
1542 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
1543 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
1544 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
1545 * bug fix: The compiler now checks for duplicated variables in macro
1547 * bug fix: SETQ on globals returns the correct value.
1548 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
1549 not a COMPILER-ERROR (followed by some other strange error on
1550 choosing the CONTINUE restart).
1551 * bug fix: make.sh and friends are now more consistent in the way that
1552 they look for GNU "make".
1554 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
1555 * experimental native threads support (on x86 Linux >=2.4 only).
1556 This is not compiled in by default: you need to add :SB-THREAD to
1557 the target features. See the "Beyond ANSI" chapter of the manual
1559 * fix for longstanding nonANSIism: The old distinction between
1560 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
1561 The return value from CL:FIND-CLASS is now a CLOS class, and
1562 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
1563 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
1564 * An interface to the MetaObject Protocol, as described in Kiczales,
1565 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
1566 MIT Press, 1991, is available from the SB-MOP package.
1567 * incompatible change: the SB-PCL package should now be considered
1568 a private implementation detail, and no longer a semi-private MOP
1570 * minor incompatible change: due to rearrangement for threads, the
1571 control stack and binding stack are now allocated at arbitrary
1572 addresses instead of being hardcoded per-port. Users affected by
1573 this probably have to be doing advanced things with shared
1574 libraries, and will know who they are.
1575 * minor incompatible change: Previously, all --eval forms used were
1576 processed with READ before any of them were processed with EVAL.
1577 Now each --eval form is processed with both READ and EVAL before
1578 the next --eval form is processed. (Thus package operations like
1579 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
1580 work as the user might reasonably expect.)
1581 * minor incompatible change: *STANDARD-INPUT* is now only an
1582 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
1584 * minor incompatible change: Y-OR-N-P is now character-oriented,
1585 not line oriented. Also, YES-OR-NO-P now works without errors.
1586 (thanks to Antonio Martinez)
1587 * sb-aclrepl module improvements: an integrated inspector, added
1588 repl features, and a bug fix to :trace command.
1589 * Known functions, which cannot be open coded by the backend, are
1590 considered to be able to check types of their arguments. (fixing
1591 a bug report by Nathan J. Froyd)
1592 * fixed a bug in computing method discriminating functions: It is
1593 now possible to define methods specialized on classes which have
1594 forward-referenced superclasses. (thanks to Gerd Moellmann)
1595 * fixed evaluation order in optional entries (reported by Gilbert
1597 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
1598 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
1599 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
1600 required-by-AMOP NAME argument, as well as CLASS and
1601 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
1602 * fixed bug 20: DEFMETHOD can define methods using names that are
1603 not the proper names of classes to designate class specializers.
1604 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
1605 Unix file descriptors, instead of blowing up. (thanks to Antonio
1607 * Garbage collection refactoring: user-visible change is that a
1608 call to the GC function during WITHOUT-GCING will not do garbage
1609 collection until the end of the WITHOUT-GCING. If you were doing
1610 this you were probably losing anyway.
1611 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
1612 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
1613 TYPEP the latter but not the former.
1614 * The compiler issues a full WARNING for calls to undefined functions
1615 with names from the CL package.
1616 * MAP-INTO for a vector destination is open coded. (reported by
1617 Brian Downing on c.l.l)
1618 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
1619 documentation string.
1620 * fixed some bugs revealed by Paul Dietz' test suite:
1621 ** COPY-ALIST now signals an error if its argument is a dotted
1623 ** Condition slots are now accessed more correctly in the presence
1624 of multiple initargs for a given slot.
1625 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
1626 exclude restarts of the same name associated with a different
1628 ** DEFCLASS of forward-referenced classes with another
1629 forward-referenced class in the superclasses list no longer
1631 ** Condition slots are now initialized once each, not multiple
1632 times. (thanks to Gerd Moellmann)
1633 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
1635 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
1636 ** NSET-EXCLUSIVE-OR does not return extra elements when its
1637 arguments contain duplicated elements.
1638 ** RESTART-CASE understands local macros.
1639 ** RESTART-CASE associates exactly its own restarts with a condition.
1640 ** ENDP in safe mode checks its argument to be of type LIST.
1641 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
1642 in question is unbound.
1643 ** Optimized MAKE-INSTANCE functions no longer cause internal
1644 assertion failures in the presence of duplicate initargs.
1645 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
1646 ** Side-effectful :DEFAULT-INITARGS have their side-effects
1647 propagated even in the ctor optimized implementation of
1649 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
1651 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
1652 * a better implementation of SXHASH on (simple) bit vectors,
1653 measured both in execution speed and in distribution of results
1654 over the positive fixnums, has been installed. Likewise, a better
1655 implementation of EQUAL for simple bit vectors is now available.
1656 * fixed CEILING optimization for a divisor of form 2^k.
1657 * fixed bug 240 (emitting extra style warnings "using the lexical
1658 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
1659 by Antonio Martinez)
1660 * fixed SXHASH, giving different results for NIL depending on type
1661 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
1662 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
1663 variable. (found by Rolf Wester)
1664 * SBCL does not ignore type declarations for special
1665 variables. (reported by rif on c.l.l 2003-03-05)
1666 * some bug fixes in contrib/sb-aclrepl/
1667 * fixed some bugs revealed by Paul Dietz' test suite:
1668 ** a bug in the CONS type specifier, whereby the CAR and CDR
1669 types got intertwined, has been fixed;
1670 ** the type system is now able to reason about the interaction
1671 between INTEGER and RATIO types more completely;
1672 ** APPEND, [N]REVERSE and NRECONC check that those their
1673 arguments, which must be proper lists, are really so;
1674 ** An array specialized to be unable to hold elements has been
1675 implemented, as required -- yes, really -- by ANSI;
1676 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
1677 on malformed property lists;
1679 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
1680 * incompatible packaging change: in line with Unix convention,
1681 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
1682 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
1683 * REQUIRE and PROVIDE are now optionally capable of doing something
1684 useful. See the documentation string for REQUIRE.
1685 * infrastructure for a managed SBCL contrib system: contributed
1686 modules in this release include:
1687 ** the ASDF system definition facility;
1688 ** an interface to the BSD Sockets API;
1689 ** an ACL-like convenience interface to the repl;
1690 (thanks to Kevin Rosenberg)
1691 ** an implementation of ROTATE-BYTE, with efficient implementation
1693 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
1694 gives a closer approximation to the right answer than previously.
1695 (thanks to Raymond Toy)
1696 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
1697 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
1698 optional environment arguments, as required by ANSI.
1699 * fixed bugs in other functions taking environment objects, allowing
1700 calls with an explicit NIL environment argument to be compiled
1702 * fixed bug 228: primary return values from
1703 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
1704 COMPILE or FUNCTION.
1705 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
1706 :TYPE will no longer signal errors on innocuous objects.
1707 * fixed bug 231b: SETQ is better at respecting type declarations in
1708 the lexical environment.
1709 * fixed a bug in DEFCLASS: classes named by symbols with no or
1710 unprintable packages can now be defined.
1711 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
1712 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
1713 * fixed compiler failure related to checking types of functions.
1714 (reported by Robert E. Brown)
1715 * the compiler is now much more consistent in its error-checking
1716 treatment of bounding index arguments to sequence functions: in
1717 (SAFETY 3) code, errors will be signalled in almost all cases if
1718 invalid sequence bounding indices are passed to functions defined
1719 by ANSI to operate on sequences.
1720 * fixed a bug in the build procedure: documentation of SBCL-specific
1721 packages is now preserved and available in the final Lisp image.
1722 * lifted FDEFINITION lookup out of loops in the implementation of
1723 many list operations. (thanks to Robert E. Brown)
1724 * fixed a bug in the reader: the #n# reader macro now works for
1725 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
1726 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
1727 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
1728 E. Brown and Tony Martinez respectively)
1729 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
1730 SLOT-BOUNDP: in particular, it is now able to optimize them much
1731 better, and is now not vulnerable to having packages renamed.
1732 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
1733 always called when a slot is not present in an instance. (thanks
1735 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
1736 longer signal an error on unreading a character following EOF on
1737 the previous constituent stream. (thanks to Tony Martinez)
1738 * fixed some bugs revealed by Paul Dietz' test suite:
1739 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
1740 not just nonnegative fixnums;
1741 ** the logical bit-array operators such as BIT-AND now accept an
1742 explicit NIL for their "opt-arg" argument (to indicate a
1743 freshly-consed result bit-array);
1744 ** ELT now signals an error on an invalid sequence index in safe
1746 ** the type system is now cleverer about negations of numeric
1747 types, and consequently understands the BIGNUM and RATIO types
1749 ** the type system is now cleverer about the interaction between
1750 INTEGER and RATIO types: while bugs still remain, many more
1751 cases are accurately computed;
1752 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
1753 if it is in the last clause;
1754 ** CONSTANTLY now correctly returns a side-effect-free function in
1756 ** DECLARE is no longer treated as a special-operator; in
1757 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
1758 * incremented fasl file version number due to the change in the
1759 DEFSTRUCT-SLOT-DESCRIPTION structure.
1761 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
1762 * minor incompatible change: code processed by the "interpreter" or
1763 EVAL now has a compilation optimization policy of (DEBUG 2)
1764 (changed from (DEBUG 1)) to improve debuggability of interactive
1765 development, and to allow the use of the debug RETURN command in
1767 * an experimental implementation of the RETURN command for the
1768 debugger has been included. (thanks to Frederik Kuivinen)
1769 * fixed bug 62: constraints were not propagated into a loop.
1770 * fixed bug in embedded calls of SORT (reported and investigated by
1772 * fixed some bugs revealed by Paul Dietz' test suite:
1773 ** printing and reading of arrays with some dimensions having
1774 length 0 (thanks to Gerd Moellmann);
1775 ** BOA constructor with &AUX argument without a default value does
1776 not cause a type error;
1777 ** CONSTANTP now returns true for all self-evaluating objects.
1779 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
1780 * fixed bug 127: DEFSTRUCT now does not clobber old structure
1781 accessors that are related by inheritance, as specified in the
1782 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
1783 Valtteri Vuorikoski)
1784 * The compiler is now able to inline functions that were defined in
1785 a complex lexical environment (e.g. inside a MACROLET).
1786 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
1788 * Support for the upcoming FreeBSD-5.0 release has been included.
1789 (thanks to Dag-Erling Smorgrav)
1790 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
1791 effect when it is not in a toplevel context.
1792 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
1793 stand a better chance of being correct. (thanks to Gerd
1795 * fixed bug in COERCE, which now signals an error on coercing a
1796 rational to a bounded real type which excludes the expected
1798 * The compiler is now able to derive types more accurately from the
1799 COERCE and COMPILE functions.
1800 * fixed bug 223: functional binding is considered to be constant
1801 only for symbols in the CL package.
1802 * fixed bug 231: SETQ did not check the type of a variable being set
1803 (reported by Robert E. Brown)
1804 * A new optimization for MAKE-INSTANCE has been included, fixing
1805 various bugs (including relating to :ALLOCATION :CLASS slots and
1806 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
1808 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
1809 ** As required by ANSI, LOOP now disallows anonymous collection
1810 clauses such as COLLECT I in conjunction with aggregate boolean
1811 clauses such as THEREIS (= I 1);
1812 ** LOOP now signals an error when any variable is reused in the
1813 same loop (including the potentially useful construct analogous
1814 to WITH A = 1 WITH A = (1+ A);
1815 ** IT is only a special loop symbol within the first clause of a
1816 conditional loop clause;
1817 ** LOOP with a typed iteration variable over a hashtable now
1818 signals a type error iff it should.
1819 * fixed some other bugs revealed by Paul Dietz' test suite:
1820 ** FILE-STREAM now names the class previously known as FD-STREAM;
1821 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
1822 argument) no longer signals an error;
1823 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
1824 of the slot symbol, rather than using the current package
1825 ((:CONC-NAME "") continues to intern the slot's name in the
1827 * incremented fasl file version number, because of the incompatible
1828 change to the DEFSTRUCT-DESCRIPTION structure, and again because
1829 of the new implementation of DEFINE-COMPILER-MACRO.
1831 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
1832 * Support for building SBCL for MIPS platforms running in
1833 little-endian mode has now been checked in, and basic
1834 functionality on said platforms verified.
1835 * minor incompatible change: PCL now records the pathname of a file
1836 in which methods and the like are defined, rather than its
1838 * minor incompatible change: TRUENAME now considers the truename of
1839 a file naming a directory to be the pathname with :DIRECTORY
1840 component indicating that directory.
1841 * minor incompatible change: a NAMED clause in the extended form of
1842 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
1843 reason for the previous behaviour is unclear.
1844 * more systematization and improvement of CLOS and MOP conformance
1845 in PCL (thanks to Gerd Moellman and Pierre Mai):
1846 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
1848 ** DEFINE-METHOD-COMBINATION no longer signals an error for
1849 primary methods with no specializers;
1850 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
1852 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
1853 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
1854 FORWARD-REFERENCED-CLASSes; error reporting on
1855 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
1857 ** SXHASH on CLOS instances now uses a slot internal to the
1858 instance to return different numbers on distinct instances,
1859 while preserving the same return value through invocations of
1861 ** DEFMETHOD signals errors when methods with longer incongruent
1862 lambda lists are added to generic functions;
1863 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
1864 CLASS, as specified in AMOP;
1865 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
1866 on the order returned by the primary method for classes of
1867 class STANDARD-CLASS;
1868 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
1869 * fixed some bugs shown by Paul Dietz' test suite:
1870 ** DOLIST puts its body in TAGBODY;
1871 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
1873 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
1874 value producing form;
1875 ** if more variables are given to PROGV than values, extra
1876 variables are bound and made to have no value;
1877 ** NSUBSTITUTE on list arguments gets the right answer with
1879 ** ELT signals an error of type TYPE-ERROR when the index argument
1880 is not a valid sequence index;
1881 ** LOOP signals (at macroexpansion time) an error of type
1882 PROGRAM-ERROR when duplicate variable names are found;
1883 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
1884 ** FUNCALL of special-operators now cause an error of type
1886 ** PSETQ now works as required in the presence of side-effecting
1887 symbol-macro places;
1888 ** NCONC accepts any object as its last argument;
1889 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
1891 ** loop-for-as-package does not require a package to be explicitely
1893 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
1895 * fixed bug 166: compiler preserves "there is a way to go"
1896 invariant when deleting code.
1897 * fixed bug 172: macro lambda lists with required arguments after
1898 &REST arguments now cause an error to be signalled. (thanks to
1900 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
1901 bug. (thanks to Matthew Danish)
1902 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
1904 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
1905 arguments are lexically rebound. (thanks to Gerd Moellmann and
1907 * fixed bug 194: error messages are now more informative when there
1908 is no primary method applicable in a call to a generic
1909 function. (thanks to Gerd Moellmann)
1910 * fixed bug in command line argument checking (thanks to Julian
1912 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
1913 (thanks to Matthew Danish)
1914 * incremented fasl file version number, because of the
1915 SXHASH-related changes in the layout of CLOS data structures
1917 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
1918 * minor incompatible change: The runtime (the Unix executable named
1919 "sbcl") is now much pickier about the .core files it will load.
1920 Essentially it now requires .core files to descend from the same
1921 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
1922 as the runtime does. (The intent is to prevent the crashes which
1923 can occur, and which can even be reported as mysterious failures,
1924 when people patch the sources or change the build parameters
1925 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
1926 sbcl and .core files.)
1927 * fixed bug: VALUES-LIST is no longer optimized away.
1928 * fixed bug 142: The FFI conversion of C string values to Lisp
1929 string values no longer conses excessively. (thanks to Nathan
1930 Froyd porting Raymond Toy's fix to CMU CL)
1931 * began to systematize and improve MOP conformance in PCL (thanks to
1932 Nathan Froyd, Gerd Moellman and Pierre Mai):
1933 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
1935 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
1936 ** FINALIZE-INHERITANCE is now called on class finalization;
1937 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
1938 argument precedence order.
1939 * fixed bug 202: The compiler no longer fails on functions whose
1940 derived types contradict their declared type.
1941 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
1942 so it can be non-toplevel.
1943 * The fasl file version number has changed (because of the new
1944 implementation of DEFMACRO).
1945 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
1946 safe code, that any length requirement by their type-specifier
1947 argument is valid. The exceptions to this are described in bug
1949 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
1950 functions now check the types of their inputs as required by ANSI.
1951 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
1952 introduced symbol is DECLAREd to be SPECIAL.
1953 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
1954 * fixed bug: :COUNT argument to sequence functions may be negative
1955 * fixed bug: body of DO-SYMBOLS may contain declarations
1956 * fixed bug: PUSHNEW now evaluates its arguments from left to right
1957 (reported by Paul F. Dietz, fixed by Gerd Moellman)
1958 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
1959 symbol macro only once
1960 * fixed printing of call frame when argument list is unavailable
1961 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
1962 * compiler no longer signals WARNING on unknown keyword
1965 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
1966 * A beta-quality port to the mips architecture running Linux,
1967 based on the old CMUCL backend, has been made. It has been tested
1968 on a big-endian kernel, and works sufficiently well to be able to
1969 rebuild itself; it has not been tested in little-endian mode.
1970 * fixed an inconsistency between gencgc.c and purify.c which made
1971 dumping/loading .core files unreliable
1972 * fixed bug 120a: The compiler now deals correctly with IFs where
1973 the consequent is the same as the alternative, instead of
1974 misderiving the return type. (thanks to Alexey Dejneka)
1975 * fixed bug 113: Logical pathnames are now dumpable (the logical
1976 host is resolved at load-time, throwing an error if it is not
1978 * fixed bug 174: FORMAT's error message is slightly clearer when a
1979 non-printing character is used in a format directive.
1980 * fixed several bugs in compiler checking of type declarations, i.e.
1981 violations of the Python "declarations are assertions" principle
1982 (thanks to Alexey Dejneka)
1983 * fixed several bugs in PCL's error checking (thanks to Gerd
1985 * fixed bug: printing of FILE-ERROR (thanks to Antonio
1987 * fixed bug in compilation of functions as first class values
1988 (thanks to Antonio Martinez-Shotton)
1989 * The compiler's handling TYPE-ERRORs which it can prove will
1990 inevitably happen at runtime has been cleaned up and corrected
1991 in several ways. (thanks to Alexey Dejneka)
1992 * improved argument type checking for various basic arithmetic
1993 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
1994 lavished on them in the past that they can be compiled in many
1995 ways in different special cases
1996 * fixed bug 181: compiler checks validity of user supplied type
1998 * cleaned up code flushing in optimization: Function calls which
1999 should signal errors for safety purposes (e.g. which ANSI says
2000 should signal errors when their arguments are of incorrect type)
2001 are no longer optimized away.
2002 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2003 * incremented fasl file version number, because changes in the
2004 implementation of sequence functions like COERCE caused
2005 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2006 in old inline expansions) to become undefined. (Actually these
2007 changes were later undone, so we might very well be binary
2008 compatible with 0.7.7 after all, but leaving the version number
2009 incremented seemed like the simplest and most conservative
2012 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2013 * An alpha-quality port to the parisc architecture running Linux,
2014 based on the old CMUCL backend, has been made. This, even more so
2015 than the other backends, should be considered still a work in
2016 progress; known problems include that the Linux kernel in 64-bit
2017 mode does not propagate the correct sigcontext structure to
2018 userspace, and consequently SBCL on a parisc64 kernel will not
2020 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2021 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2022 suppressed.) Also now that the compiler is looking at declarations
2023 in the environment, it checks optimization declarations as well,
2024 and suppresses inlining when (> DEBUG SPEED).
2025 * More fixes have been made to treatment of floating point exception
2026 treatment and other Unix signals. In particular, floating point
2027 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2028 * The detection and handling of control stack exhaustion (infinite
2029 or very deeply nested recursion) has changed. Stack exhaustion
2030 detection is now done by write-protecting pages at the OS level
2031 and applies at all optimization settings; when found, a
2032 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2033 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2034 be caught using IGNORE-ERRORS.
2035 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2036 correctly when transforming recursive LABELS functions to LETs.
2037 (thanks to Alexey Dejneka)
2038 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2039 that are names of constants or global variables.
2040 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2041 alien routines with docstrings.
2042 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2043 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2045 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2046 (thanks to Eric Marsden)
2047 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2048 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2049 * Bug fix: The SPARC backend can now compile functions involving
2050 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2051 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2052 to a functions expecting a PATHNAME-DESIGNATOR.
2053 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2054 lambda lists. (thanks to Alexey Dejneka)
2055 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2056 functions so that EXPORTing the name of the class doesn't cause
2057 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2058 to Antonio Martinez for reporting this)
2059 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2060 constant-folded without failing an assertion. (thanks to Einar
2061 Floystad Dorum for reporting this)
2062 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2063 types are now dealt with more correctly by the compiler.
2064 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2065 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2066 behaviour analogous to RENAME-FILE. This puts its behaviour more
2067 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2069 * The fasl file version number has changed again. (because of the
2070 bug fix involving the names of PCL MAKE-INSTANCE functions)
2072 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2073 * bug fix: Floating point exceptions are treated much more
2074 consistently on the x86/Linux and PPC/Linux platforms.
2075 * Array initialization with :INITIAL-ELEMENT is now much faster for
2076 cases when the compiler cannot open code the array creation, but
2077 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2078 array accesses have also seen a speed increase.
2079 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2080 specified. (This was at the root of some bad interactions between
2081 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2083 * bug fix: Internal error arguments for undefined functions are now
2084 computed correctly on the PPC/Linux platform.
2085 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2086 Raymond Toy's patch for CMU CL)
2087 * Support for the Solaris 9 operating environment has been included
2088 (thanks to Daniel Merritt)
2089 * A very ugly but hopefully complete draft of the missing FFI chapter
2090 of the manual has been created by reformatting the corresponding
2091 CMU CL manual chapter into (currently very ugly and incoherent)
2092 DocBook and bringing it up to date for SBCL behavior. Thus, the
2093 manual is now essentially complete, at least by my extreme
2094 once-and-only-once standards, whereby it's acceptable to refer to
2095 the doc strings of SB-EXT functions as the primary documentation.
2096 * The fasl file version number has changed again, due to cleanup of
2097 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2098 is no longer a static symbol.)
2100 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2101 * SBCL now builds with OpenMCL (version 0.12) as the
2102 cross-compilation host; also, more progress has been made toward
2103 bootstrapping under CLISP.
2104 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2106 * bug 158 fixed: The compiler can now deal with integer loop
2107 increments different from 1; fixing this turned out also to fix
2109 * bug 169 fixed: no more bogus warnings about using lexical bindings
2110 despite the presence of perfectly good SPECIAL declarations (thanks
2111 to David Lichteblau)
2112 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2113 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2114 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2116 * bug 180 fixed: Method combination specifications no longer ignore
2117 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2118 * bug fix: Structure type predicate functions now check their argument
2119 count as they should.
2120 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2121 correctly. (thanks to Pierre Mai)
2122 * minor incompatible change: The --noprogrammer option is deprecated
2123 in favor of the new --disable-debugger option, which is very similar.
2124 (The major difference is that it takes effect at a slightly different
2125 time at startup, causing handling of errors in --sysinit and
2126 --userinit files will be affected differently.) The
2127 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2128 been added to allow this functionality to be controlled from ordinary
2129 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2130 maintainers, who might want to run non-interactive scripts to
2131 build SBCL cores which will later be used interactively.)
2132 * minor incompatible change: The LOAD function no longer, when given
2133 a wild pathname to load, loads all files matching that pathname.
2134 Instead, an error of type FILE-ERROR is signalled.
2136 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2137 * bug 147 fixed: The compiler preserves its block link/count
2138 invariants more correctly now so that it doesn't crash. (thanks
2140 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2142 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2143 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2144 no-value-for-this-character as NIL (as specified by ANSI).
2145 * HOST-NAMESTRING on physical pathnames now returns a string that is
2146 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2147 (thanks to Christophe Rhodes)
2148 * The Alpha port handles icache flushing more correctly. (thanks to
2150 * More progress has been made toward bootstrapping under CLISP. (thanks
2151 to Christophe Rhodes)
2152 * The fasl file format has changed again, because dynamic loading
2153 on OpenBSD (which has non-ELF object files) motivated some cleanups
2154 in the way that foreign symbols are transformed and passed around.
2155 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2156 is no longer treated as whitespace by the reader, but instead as
2157 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2158 |A
\7fB|, instead of A as it used to.
2160 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2161 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2162 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2163 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2164 this as of 0.7.1.45, but was left out of the previous news section
2165 (thanks to Dan Barlow)
2166 * SBCL now runs on the Solaris operating system on SPARC architectures
2167 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2168 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2169 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2170 * SPARC backend cleanups, allowing builds of cores optimized for V8
2171 and V9 SPARCS, and also emission of code targeted to a particular
2172 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2174 * SBCL is closer to bootstrapping under CLISP, thanks to various
2175 fixes by Christophe Rhodes.
2176 * The fasl file format has changed again, to allow the compiler's
2177 INFO database to support symbol macros.
2178 * The user manual (in doc/) is formatted into HTML more nicely.
2179 (thanks to coreythomas)
2180 * The system is smarter about SUBTYPEP relationships, especially
2181 those involving NOT types (including types such as ATOM which are
2182 represented internally using NOT types). Thus SUBTYPEP is less
2183 likely to return (VALUES NIL NIL) in general, and in particular
2184 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2186 * The fasl file format has changed again, because the internal
2187 representation of types now includes a new slot to support the new
2188 SUBTYPEP-of-NOT-types logic.
2189 * (not a change in the main branch of SBCL, but a related prototype
2190 which can hopefully be merged into the main branch of SBCL in the
2191 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2192 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2193 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2194 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2195 dispatch macro character combinations. (thanks to Alexey Dejneka)
2196 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2197 that superficially look like logical namestrings correctly.
2198 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2200 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2201 default supplied-p) for &optional and &key arguments. (thanks to
2204 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2205 * incompatible change: The compiler is now less aggressive about
2206 tail call optimization, doing it only when (> SPACE DEBUG) or
2207 (> SPEED DEBUG). (This is an incompatible change because there are
2208 programs which relied on the old CMU-CL-style behavior to optimize
2209 away their unbounded recursion which will now die of stack overflow.)
2210 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2211 for non-GENCGC systems has been increased to 20M (since that
2212 seems much closer to the likely performance optimum for modern
2213 systems than the old 4M value was)
2214 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2215 and *DEBUG-PRINT-LEVEL*
2216 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2217 of CMU CL's support for SPARC, and various endianness and other
2218 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2219 * new syntactic sugar for the Unix command line: --load foo.bar is now
2220 an alternate notation for --eval '(load "foo.bar")'.
2222 ** The system now detects stack overflow and handles it gracefully,
2223 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2224 optimization settings. (This is a good thing in general, and
2225 its introduction in this version should be particularly timely
2226 for anyone whose code fails because of suppression of tail
2228 ** The system now hunts for the C variable "environ" in a more
2229 devious way, to avoid segfaults when the C library version differs
2230 between compile time and run time. (thanks to Christophe Rhodes)
2231 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2232 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2233 ** The compiler no longer issues bogus style warnings for undefined
2234 classes in the same source file as the DEFCLASSes which defined
2235 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2237 ** fixes in CONDITION class precedence list for undefined function
2238 errors (thanks to Alexei Dejneka)
2239 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2240 correctly. (thanks to Dan Barlow)
2241 ** portability fixes aiming at bootstrapping under CLISP (thanks
2242 to Dave McDonald and Christophe Rhodes)
2243 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2244 ** fixes in type translation and and type inference (thanks to
2246 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2247 ** various fixes in the new ports (thanks to Dan Barlow)
2248 * several changes related to debugging:
2249 ** suppression of tail recursion, as noted above
2250 ** stack overflow detection, as noted above
2251 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2252 is now the default. (For some time encapsulation has been more
2253 reliable than the breakpoint-based :ENCAPSULATE NIL
2254 implementation, at least on X86 systems; and I just noticed that
2255 encapsulation also seems closer to the spirit of the ANSI
2258 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
2260 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
2261 up properly again. (There was a packaging bug in 0.7.0 which
2262 left their definitions in SB-SYS::LOAD-FOREIGN and
2263 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
2264 vital for most things which interface to C-level interfaces,
2265 like extensions working with sockets or databases or
2266 Perl-compatible regexes or whatever, and the need to fix
2267 this bug is the main reason that 0.7.1 was released so
2269 ** DEFGENERIC is now choosier about the methods it redefines, so that
2270 reLOADing a previously-LOADed file containing DEFGENERICs does
2271 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
2272 cycle now works as it should. (thanks to Alexey Dejneka)
2273 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
2274 fixed by Christophe Rhodes. (He actually submitted this patch
2275 months ago, and I delayed until after 0.7.0.)
2276 ** Bug 111 (internal compiler confusion about runtime checks on
2277 FUNCTION types) was fixed by Alexey Dejneka.
2278 * Some internal cleanups (getting rid of variables which aren't
2279 needed now that the byte interpreter is gone) caused the fasl
2280 file format number to change again.
2282 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
2283 * major incompatible change: The default fasl file extension, i.e. the
2284 default extension for files produced by COMPILE-FILE, has changed
2285 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
2287 ** There are many changes in the implementation of the compiler.
2288 SBCL is now essentially a compiler-only implementation of ANSI
2289 Common Lisp. EVAL still "interprets" a few special cases, but
2290 almost all the interesting cases are handled by creating
2291 a LAMBDA expression, calling COMPILE on it, then calling
2292 FUNCALL on the result.
2293 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
2294 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
2295 Since the code is newer, there might still be some new bugs
2296 (though not as many as before Martin Atzmueller's fixes:-). But
2297 the new code is substantially simpler and clearer, and hopefully
2298 any remaining bugs will be simpler, less fundamental, and more
2299 fixable then the bugs in the old code.
2300 ** The revised compiler is still a little unsteady on its feet.
2302 *** The debugging information it produces (particularly the names
2303 of FUNCTION objects) is sometimes much less useful than what
2304 the old compiler produced.
2305 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
2306 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
2307 within a MACROLET) has been temporarily weakened.
2308 ** There are new compiler optimizations for various functions:
2309 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
2310 FIND-IF-NOT, POSITION-IF-NOT, and FILL
2311 *** the math functions TRUNCATE, FLOOR, and CEILING
2312 *** the function-of-all-trades COERCE
2313 Mostly these should be transparent, but there's one
2314 potentially-annoying problem (bug 117): when the compiler
2315 inline-expands a function and does type analysis on the result,
2316 it can create control paths which have type mismatches, and
2317 when it can't prove that those control paths aren't taken,
2318 it will issue WARNINGs about the type mismatches. This is
2319 a particular problem in practice for the new sequence functions.
2320 It's not clear how this should be fixed, and for now, a
2321 workaround is given in the entry for 117 in the BUGS file.
2322 ** (Because of the interaction between the two previous items --
2323 occasional inlining problems and new inline expansions -- some
2324 of the new sequence function optimizations won't really kick in
2325 completely until debugging information, and then inlining, are
2326 straightened out in some future version.)
2327 * minor incompatible changes:
2328 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
2329 DIRECTORY no longer implicitly promotes NIL slots of its
2330 pathname argument to :WILD. In particular, when you ask for the
2331 contents of a directory (which you used to be able to do without
2332 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
2333 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
2334 ** changes in behavior that ANSI explicitly defines to be
2335 implementation dependent:
2336 *** The new compiler-only implementation still conforms with ANSI,
2337 but acts a little different than before. Besides the obvious
2338 changes in performance tradeoffs (that the cost per form passed
2339 to EVAL has gone up, and the cost per form executed by EVAL
2340 has gone down), the behavior of the system changes a little
2341 because there are no longer any interpreted function objects.
2342 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
2343 e.g. doing COMPILE on the output of interactive DEFUN is
2345 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
2347 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
2348 has changed from (:CL) to NIL.
2349 *** The CHAR-NAME of unprintable ASCII characters which, unlike
2350 e.g. #\Newline and #\Tab, don't have names specified in the
2351 ANSI Common Lisp standard, is now based on their ASCII symbolic
2352 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
2353 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
2354 are no longer used for output.
2355 ** changes in internal implementation constants:
2356 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
2357 4 million. (If your application spends a lot of time GCing and
2358 you have a lot of RAM, you might want to experiment with
2359 increasing it even more.)
2360 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
2361 However, almost all old code should still continue to work without
2362 immediate update, as SB-C-CALL is now a (deprecated) nickname
2364 ** Old operator names in the style DEF-FOO are now deprecated in
2365 favor of new corresponding names DEFINE-FOO, for consistency with
2366 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
2367 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
2368 internal symbols, but a few supported extensions like
2369 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
2370 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
2371 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
2372 etc. as you get deeper into recursive calls to the debugger
2373 command loop, instead of the old "5]", "5]]", "5]]]"
2374 sequence. (I was motivated to do this when squabbles between
2375 ILISP and SBCL left me very deeply nested in the debugger. In the
2376 short term, this change will probably provoke more ILISP/SBCL
2377 squabbles, but hopefully it will be an improvement in the long run.)
2378 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
2379 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
2380 function, since declaiming return types involving aliens is
2381 (1) annoyingly messy to do by hand and (2) vital to efficient
2382 compilation of code which calls such functions.
2383 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
2384 longer reexported by the SB-EXT package. They're solely useful
2385 for alien code, so it seems more logical that you should get
2386 them from the SB-ALIEN package, not in SB-EXT.
2387 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
2388 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
2389 features. Instead, the code that they used to control is always
2390 built into the system.
2391 * many other bug fixes
2392 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
2393 advantage of the new EVAL-WHEN stuff and to clean them up in
2394 general, and they are now more ANSI-compliant in a number of
2395 ways. Martin Atzmueller is responsible for a lot of this.
2396 ** Besides the cleanups discussed above, Martin Atzmueller fixed
2398 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
2399 *** correct ERROR type for various file operations
2400 *** some fixes for Lisp streams
2401 *** DEFMETHOD syntax checking
2402 *** changing old weird representation of debug information as
2403 strings (which, among their other deficiencies, don't transform
2404 correctly when you rename packages, and don't change their
2405 print representation when you change things like *PACKAGE*
2406 and *PRINT-LENGTH*) to symbols and lists of symbols
2407 He also made several improvements and fixed several bugs in DESCRIBE.
2408 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
2410 *** misbehavior of WRITE-STRING/WRITE-LINE
2411 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
2412 and several other LOOP problems as well
2413 *** DIRECTORY when similar filenames are present
2414 *** DEFGENERIC with :METHOD options
2415 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
2416 *** bug in the optimization of ARRAY-ELEMENT-TYPE
2417 *** argument ordering in FIND with :TEST option
2418 *** mishandled package designator argument in APROPOS-LIST
2419 *** various problems in the backquote readmacro
2420 *** a bug in APROPOS
2421 *** probably some others that I'm not describing very well here,
2422 since the CVS log documents them by reference to sbcl-devel
2423 messages, and the SourceForge archives aren't working well.:-(
2424 ** Dan Barlow improved the Alpha port (and is making progress on the
2425 PPC port, for those of you who think different).
2426 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
2427 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
2428 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
2429 continues to work on the SPARC port (for those of you in a position
2430 to look down upon our little PC-compatible boxes from a great height).
2431 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
2432 and uses that copy, rather than the current dynamic value, when
2433 it's trying to decide whether to truncate output. Thus e.g.
2434 (let ((*print-lines* 50))
2435 (pprint-logical-block (stream nil)
2437 (let ((*print-lines* 8))
2438 (print (aref possiblybigthings i) stream)))))
2439 should now truncate the logical block only at 50 lines, instead of
2440 often truncating it at 8 lines, as it did before.
2441 * The doc/cmucl/ directory, containing old CMU CL documentation
2442 from the time of the fork, is no longer part of the base system.
2443 SourceForge has shut down its anonymous FTP service, and with it
2444 my original plan for distributing the old CMU CL documentation
2445 there. For now, if you need these files you can download an old
2446 SBCL source release and extract them from it.
2447 * The fasl file version number changed again, for dozens of reasons,
2448 some of which are apparent above.
2450 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
2451 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
2452 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
2453 patch, so that DISASSEMBLE output is much nicer.
2454 * The code in the SB-PROFILE package now seems reasonably stable.
2455 I still haven't decided what the final interface should look like
2456 (I'd like PROFILE to interact cleanly with TRACE, since both
2457 facilities use function encapsulation) but if you have a need
2458 for profiling now, you can probably use it successfully with
2459 the current CMU-CL-style interface.
2460 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
2461 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
2462 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
2463 link now returns the dangling link itself, and for similar
2464 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
2465 link itself. (In these cases the old code signalled an error and
2466 looped endlessly, respectively.) Thus, DIRECTORY now works even
2467 in the presence of dangling and cyclic symbolic links.
2468 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
2469 is now a supported extension again, since the consensus on
2470 sbcl-devel was that it can be useful for ordinary development
2471 work, not just for debugging SBCL itself.
2472 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
2473 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
2474 that currently-defined functions might be redefined later with
2475 different return types.
2476 * Hash tables can be printed readably, as inspired by CMU CL code
2477 of Eric Marsden and SBCL code of Martin Atzmueller.
2478 * better error handling in CLOS method combination, thanks to
2479 Martin Atzmueller porting Pierre Mai's CMU CL patches
2480 * more overflow fixes for >16Mbyte I/O buffers
2481 * A bug in READ has been fixed, so that now a single Ctrl-D
2482 character suffices to cause end-of-file on character streams.
2483 In particular, now you only need one Ctrl-D at the command
2484 line (not two) to exit SBCL.
2485 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
2487 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
2488 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
2489 does the right thing.
2490 * The implementation of some type tests, especially for CONDITION
2491 types, is now tidier and maybe faster, due to CMU CL code
2492 originally by Douglas Crosher, ported by Martin Atzmueller.
2493 * Some math functions have been fixed, and there are new
2494 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
2495 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
2496 * (There are also some new optimizers in contrib/*-extras.lisp. Those
2497 aren't built into sbcl-0.6.13, but are a sneak preview of what's
2498 likely to be built into sbcl-0.7.0.)
2499 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2500 CL, ported to SBCL by Martin Atzmueller)
2501 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2502 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2503 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2504 * There's a new slam.sh hack to shorten the edit/compile/debug
2505 cycle for low-level changes to SBCL itself, and a new
2506 :SB-AFTER-XC-CORE target feature to control the generation of
2507 the after-xc.core file needed by slam.sh.
2508 * minor incompatible change: The ENTRY-POINTS &KEY argument to
2509 COMPILE-FILE is no longer supported, so that now every function
2510 gets an entry point, so that block compilation looks a little
2511 more like the plain vanilla ANSI section 3.2.2.3 scheme.
2512 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
2513 returns the number of bytes consed since the system started,
2514 rather than the number consed since the first time the function
2515 was called. (The new definition parallels ANSI functions like
2516 CL:GET-INTERNAL-RUN-TIME.)
2517 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
2518 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
2519 supported. Now DIRECTORY always does the abstract Common-Lisp-y
2520 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
2521 * Fasl file version numbers are now independent of the target CPU,
2522 since historically most system changes which required version
2523 number changes have affected all CPUs equally. Similarly,
2524 the byte fasl file version is now equal to the ordinary
2527 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
2528 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
2529 is no longer recognized. I apologize for this, because it was
2530 listed in SB-EXT as a supported extension, but I found that
2531 its existing behavior was poorly specified, as well as incorrectly
2532 specified, and it looked like too much of a mess to straighten it
2533 out. I have enough on my hands trying to get ANSI stuff to work..
2534 * many patches ported from CMU CL by Martin Atzmueller, with
2535 half a dozen bug fixes in pretty-printing and the debugger, and
2536 half a dozen others elsewhere
2537 * fixed bug 13: Floating point infinities are now supported again.
2538 They might still be a little bit flaky, but thanks to bug reports
2539 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
2540 as flaky as they were.
2541 * The --noprogrammer command line option is now supported. (Its
2542 behavior is slightly different in detail from what the old man
2543 page claimed it would do, but it's still appropriate under the
2544 same circumstances that the man page talks about.)
2545 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
2546 are now supported, and enabled by default. Thus, the compiler can
2547 handle many floating point and complex operations much less
2548 inefficiently. (Thus e.g. you can implement a complex FFT
2550 * The compiler now detects type mismatches between DECLAIM FTYPE
2551 and DEFUN better, and implements CHECK-TYPE more correctly, and
2552 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
2553 thanks to patches from Martin Atzmueller.
2554 * various fixes to make the cross-compiler more portable to
2555 ANSI-conforming-but-different cross-compilation hosts (notably
2556 Lispworks for Windows, following bug reports from Arthur Lemmens)
2557 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
2558 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
2559 fixed thanks to Pierre Mai's CMU CL patches.
2560 * fixes to keep the system from overflowing internal counters when
2561 it tries to use i/o buffers larger than 16M bytes
2562 * fixed bug 45a: Various internal functions required to support
2563 complex special functions have been merged from CMU CL sources.
2564 (When I was first setting up SBCL, I misunderstood a compile-time
2565 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
2566 * improved support for type intersection and union, fixing bug 12
2567 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
2568 more obscure bugs as well
2569 * some steps toward byte-compiling non-performance-critical
2570 parts of the system, courtesy of patches from Martin Atzmueller
2571 * Christophe Rhodes has made some debian packages of sbcl at
2572 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
2573 From his sbcl-devel e-mail of 2001-04-08 they're not completely
2574 stable, but are nonetheless usable. When he's ready, I'd be happy
2575 to add them to the SourceForge "File Releases" section. (And if
2576 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
2577 * new fasl file format version number (because of changes in
2578 internal representation of (OR ..) types to accommodate the new
2579 support for (AND ..) types, among other things)
2581 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
2582 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
2584 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
2586 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
2587 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
2588 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
2589 * DESCRIBE now works on structure objects again.
2590 * Most function call argument type mismatches are now handled as
2591 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
2592 know whether the function will be redefined before the call is
2593 executed. (The compiler could flag local calls with full WARNINGs,
2594 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
2595 it doesn't keep track of enough information to know whether calls
2596 are local in this sense.)
2597 * Compiler output is now more verbose, with messages truncated
2598 later than before. (There should be some supported way for users
2599 to override the default verbosity, but I haven't decided how to
2600 provide it yet, so this behavior is still controlled by the internal
2601 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
2602 src/compiler/ir1util.lisp.)
2603 * Fasl file format version numbers have increased again, because
2604 support for the Gray streams extension changes the layout of the
2605 system's STREAM objects.
2606 * The Gray subclassable streams extension now works, thanks to a
2607 patch from Martin Atzmueller.
2608 * The full LOAD-FOREIGN extension (not just the primitive
2609 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
2610 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
2611 but like most other programs, it defaults to copying the Unix
2612 environment from the original process instead of starting the
2613 new process in an empty environment.
2614 * Extensions which manipulate the Unix environment now support
2615 an :ENVIRONMENT keyword option which doesn't smash case or
2616 do other bad things. The CMU-CL-style :ENV option is retained
2617 for porting convenience.
2618 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
2619 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
2621 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
2623 * A patch from Martin Atzmueller seems to have solved the SIGINT
2624 problem, and as far as we know, signal-handling now works cleanly.
2625 (If you find any new bugs, please report them!)
2626 * The system no longer defaults Lisp source file names to types
2627 ".l", ".cl", or ".lsp", but only to ".lisp".
2628 * The compiler no longer uses special default file extensions for
2629 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
2630 seems to expect a single default extension for all compiled code,
2631 and there's no compelling reason to try to stretch the standard
2632 to allow two different extensions.) Instead, byte-compiled files
2633 default to the same extension as native-compiled files.
2634 * Fasl file format version numbers have increased again, because
2635 a rearrangement of internal implementation packages made some
2636 dumped symbols in old fasl files unreadable in new cores.
2637 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
2638 many fewer weird special cases.
2639 * Bug #17 (differing COMPILE-FILE behavior between logical and
2640 physical pathnames) has been fixed, and some related misbehavior too,
2641 thanks to a patch from Martin Atzmueller.
2642 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
2643 by Tim Moore, ported to SBCL by Martin Atzmueller.
2644 * Martin Atzmueller fixed several filesystem-related problems,
2645 including bug #36, in part by porting CMU CL patches, which were
2646 written in part by Paul Werkowski.
2647 * More compiler warnings in src/runtime/ are gone, thanks to
2648 more patches from Martin Atzmueller.
2649 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
2652 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
2654 * DESCRIBE now works on CONDITION objects.
2655 * The debugger now handles errors which arise when trying to print
2656 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
2658 * The build system now uses an additional file, customize-target-features.lisp,
2659 to allow local modifications to the target *FEATURES* list. (The point of
2660 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
2661 debugging features enabled, without having to worry about propagating it
2662 into everyone's system when I do a "cvs update".) When no
2663 customize-target-features.lisp file exists, the target *FEATURES* list
2664 should be constructed the same way as before.
2665 * fixed bugs in DEFCONSTANT ANSI-compatibility:
2666 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
2667 warn about behavior which is undefined under the ANSI spec. Note: This
2668 is specified by ANSI, but it's not very popular with programmers.
2669 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
2670 macro in the SBCL sources for an example of a workaround which you
2671 might use to make portable ANSI-standard code which does what you want.
2672 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
2673 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
2674 when it's used as a non-toplevel form. (This is required in order
2675 to implement the DEFCONSTANT-EQX macro.)
2676 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
2677 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
2678 funny things, due to bugs in the implementation of EVAL-WHEN
2679 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
2680 non-toplevel DEFCONSTANTs are uncommon.)
2681 * The core file version number and fasl file version number have been
2682 incremented, because the old noncompliant DEFCONSTANT behavior involved
2683 calling functions which no longer exist, and because I also took the
2684 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
2685 * fixed bug 1 (error handling before read-eval-print loop starts), and
2686 redid debugger restarts and related debugger commands somewhat while
2688 ** The QUIT debugger command is gone, since it did something
2689 rather different than the SB-EXT:QUIT command, and since it never
2690 worked properly outside the main toplevel read/eval/print loop.
2691 Invoking the new TOPLEVEL restart provides the same functionality.
2692 ** The GO debugger command is also gone, since you can just invoke
2693 the CONTINUE restart directly instead.
2694 ** The TOP debugger command is also gone, since it's redundant with the
2695 FRAME 0 command, and since it interfered with abbreviations for the
2697 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
2699 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
2700 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
2701 some porting work by Martin Atzmueller)
2702 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
2703 with a boatload of patches which he ported to SBCL. Now that those
2705 ** The system tries to make sure that its low-priority messages
2706 are prefixed by semicolons, to help people who like to use
2707 syntax highlighting in their ILISP buffer. (This patch
2708 was originally due to Raymond Toy.)
2709 ** The system now optimizes INTEGER-LENGTH better, thanks to more
2710 patches originally written by Raymond Toy.
2711 ** The compiler understands coercion between single-value and
2712 multiple-VALUES type expressions better, getting rid of some very
2713 weird behavior, thanks to patches originally by Robert MacLachlan
2714 and Douglas Crosher.
2715 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
2716 lambda lists, thanks to a patch originally by Pierre Mai.
2717 ** The system no longer bogusly warns about "abbreviated type
2719 ** The compiler gets less confused by inlining and RETURN-FROM,
2720 thanks to some patches originally by Tim Moore.
2721 ** The system no longer hangs when dumping circular lists to fasl
2722 files, thanks to a patch originally from Douglas Crosher.
2723 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
2724 undefined function error.
2725 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
2726 in structure slot initforms) for now, documented workaround instead:-|
2727 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
2728 * fixed bug 5: added stubs for various Gray stream functions called
2729 in the not-a-CL:STREAM case, so that even when Gray streams aren't
2730 installed, at least appropriate type errors are generated
2731 * fixed bug 8: better reporting of various PROGRAM-ERRORs
2732 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
2733 consistently in DEFMETHOD forms.
2734 * removed bug 21 from BUGS, since Martin Atzmueller points out that
2735 it doesn't seem to affect SBCL after all
2736 * The C runtime system now builds with better optimization and many
2737 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
2739 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
2741 * The system is now under CVS at SourceForge (instead of the
2742 CVS repository on my home machine).
2743 * The new signal handling code has been tweaked to treat register
2744 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
2745 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
2746 downstream, e.g. in debug-int.lisp, has implicit dependencies
2747 on the unsignedness of integer representation of machine words,
2748 and that caused the system to bomb out with infinite regress
2749 when trying to recover from type errors involving signed values,
2750 e.g. (BUTLAST '(1 2 3) -1).)
2751 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
2752 (This was one of the bugs Peter Van Eynde reported back in July.)
2753 * The system now uses code inspired by Colin Walters' O(N)
2754 implementation of MAP (from the cmucl-imp@cons.org mailing
2755 list, 2 September 2000) when it can't use a DEFTRANSFORM to
2756 inline the MAP operation, and there is more than one
2757 sequence argument to the MAP call (so that it can't just
2758 do ETYPECASE once and for all based on the type of the
2759 single sequence argument). (The old non-inline implementation
2760 of the general M-argument sequence-of-length-N case required
2761 O(M*N*N) time when any of the sequence arguments were LISTs.)
2762 * The QUIT :UNIX-CODE keyword argument has been renamed to
2763 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
2764 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
2766 * Raymond Wiker's patches to port dynamic loading from Linux to
2767 FreeBSD have been added.
2768 * The BUGS file is now more nearly up to date, thanks in large part
2769 to Martin Atzmueller's review of it.
2770 * The debugger now flushes standard output streams before it begins
2771 its output ("debugger invoked" and so forth).
2772 * The core version number and fasl file version number have both
2773 been incremented, because of incompatible changes in the layout
2775 * FINISH-OUTPUT is now called more consistently on QUIT. (It
2776 used to not be called for a saved Lisp image.)
2777 * Martin Atzmueller's version of a patch to fix a compiler crash,
2778 as posted on sbcl-devel 13 September 2000, has been installed.
2779 * Instead of installing Martin Atzmueller's patch for the
2780 compiler transform for SUBSEQ, I deleted the compiler transform,
2781 and transforms for some similar consing operations.
2782 * A bug in signal handling which kept TRACE from working on OpenBSD
2784 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
2785 away by constant folding
2786 * The system now defines its address space constants in one place
2787 (in the Lisp sources), and propagates them automatically elsewhere
2788 (through GENESIS and the sbcl.h file). Therefore, patching the
2789 address map is less unnecessarily tedious and error-prone. The
2790 Lisp names of address space constants have also been systematized.
2791 * CVS tags like dollar-Header-dollar have been removed from
2792 the sources, because they have never saved me trouble and
2793 they've been source of trouble working with patches and other
2794 diff-related operations.
2795 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
2796 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
2798 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
2800 * The system has been ported to OpenBSD.
2801 * The system now compiles with a simple "sh make.sh" on the systems
2802 that it's supported on. I.e., now you no longer need to tweak
2803 text in the target-features.lisp-expr and symlinks in src/runtime/
2804 by hand, the make.sh takes care of it for you.
2805 * The system is no longer so grossly inefficient when compiling code
2806 involving vectors implemented as general (not simple) vectors (VECTOR T),
2807 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
2808 which dares to use the various sequence functions on non-simple
2809 vectors, takes less of a performance hit.
2810 * There is now a primitive type predicate VECTOR-T-P
2811 to test for the (VECTOR T) type, so that e.g.
2812 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
2813 can now be compiled with some semblance of efficiency. (The old code
2814 turned the type declaration into a full call to %TYPEP at runtime!)
2815 * AREF on (VECTOR T) is still not fast, since it's still compiled
2816 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
2817 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
2818 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
2819 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
2820 without making full calls to SUBTYPEP at runtime.
2821 (Some analogous efficiency issues for non-simple vectors specialized to
2822 element types other than T, or for non-simple multidimensional arrays,
2823 have not been addressed. They could almost certainly be handled the
2824 same way if anyone is motivated to do so.)
2825 * The changes in array handling break binary compatibility, so
2826 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
2827 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
2828 instead of (VALUES T T).
2829 * By following the instructions that Dan Barlow posted to sbcl-devel
2830 on 2 July 2000, I was able to enable primitive dynamic object
2831 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
2832 functionality is not implemented (since it calls ld to resolve
2833 library references automatically, requiring RUN-PROGRAM for its
2834 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
2835 try to resolve library references) is now supported.
2836 * The system now flushes the standard output streams when it terminates,
2837 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
2838 them at several other probably-convenient times, e.g. in each pass of
2839 the toplevel read-eval-print loop, and after evaluating a form given
2840 as an "--eval" command-line option. (These changes were motivated by a
2841 discussion of stream flushing issues on cmucl-imp in August 2000.)
2842 * The source transform for TYPEP of array types no longer assumes
2843 that an array whose element type is a not-yet-defined type
2844 is implemented as an array of T, but instead punts, so that the
2845 type will be interpreted at runtime.
2846 * There is now some support for cross-compiling in make.sh: each of
2847 the phases of make.sh has its own script. (This should be transparent
2848 to people doing ordinary, non-cross-compile builds.)
2849 * Since my laptop doesn't have hundreds of megabytes of memory like
2850 my desktop machine, I became more motivated to do some items on
2851 my to-do list in order to reduce the size of the system a little:
2852 ** Arrange for various needed-only-at-cold-init things to be
2853 uninterned after cold init. To support this, those things have
2854 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
2855 symbols with such names are now uninterned after cold init).
2856 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
2857 fasl files for cold load.
2858 ** Remove the old compiler structure pooling code (which used to
2859 be conditional on the target feature :SB-ALLOC) completely.
2860 ** Redo the representation of some data in cold init to be more compact.
2861 (I also looked into supporting byte compiled code at bootstrap time,
2862 which would probably reduce the size of the system a lot, but that
2863 looked too complicated, so I punted for now.)
2864 * The maximum signal nesting depth in the src/runtime/ support code has
2865 been reduced from 4096 to 256. (I don't know any reason for the very
2866 large old value. If the new smaller value turns out to break something,
2867 I'll probably just bump it back up.)
2868 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
2870 * Many, many bugs reported by Peter Van Eynde have been added to
2871 the BUGS list; some have even been fixed.
2872 * While enabling dynamic object file loading, I tried to make the
2873 code easier to understand, renaming various functions and variables
2874 with less ambiguous names, and changing some function calling
2875 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
2876 * While trying to figure out how to do the OpenBSD port, I tried to
2877 clean up some of the code in src/runtime/. In particular, I dropped
2878 support for non-POSIX signal handling, added various comments,
2879 tweaked the code to reduce the number of compilation warnings, and
2880 renamed some files to increase consistency.
2881 * To support the new automatic configuration functionality in make.sh,
2882 the source file target-features.lisp-expr has been replaced with the
2883 source file base-target-features.lisp-expr and the machine-generated
2884 file local-target-features.lisp-expr.
2885 * fixed a stupid quoting error in make.sh so that using CMU CL
2886 "lisp -batch" as cross-compilation host works again
2888 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
2890 * DESCRIBE no longer tries to call itself recursively to describe
2891 bound/fbound values, so that it no longer fails on symbols which are
2892 bound to themselves (like keywords, T, and NIL).
2893 * DESCRIBE now works on generic functions.
2894 * The printer now prints less-screwed-up representations of closures
2895 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
2896 * A private symbol is used instead of the :EMPTY keyword previously
2897 used to mark empty slots in hash tables. Thus
2898 (DEFVAR *HT* (MAKE-HASH-TABLE))
2899 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
2900 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
2901 now does what ANSI says that it should. (You can still get
2902 similar noncompliant behavior if bang on the hash table
2903 implementation with all the symbols you get back from
2904 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
2905 This breaks binary compatibility, since tests for equality to
2906 :EMPTY are wired into things like the macroexpansion of
2907 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
2909 * There's now a minimal placeholder implementation for CL:STEP,
2910 as required by ANSI.
2911 * An obscure bug in the interaction of the normal compiler, the byte
2912 compiler, inlining, and structure predicates has been patched
2913 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
2914 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
2916 * Missing ordinary arguments in a macro call are now detected even
2917 when the macro lambda list contains &KEY or &REST.
2918 * The debugger no longer complains about encountering the top of the
2919 stack when you type "FRAME 0" to explicitly instruct it to go to
2920 the top of the stack. And it now prints the frame you request even
2921 if it's the current frame (instead of saying "You are here.").
2922 * As specified by ANSI, the system now always prints keywords
2923 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
2925 * The default initial SIZE of HASH-TABLEs is now smaller.
2926 * Type information from CLOS class dispatch is now propagated
2927 into DEFMETHOD bodies, so that e.g.
2928 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2930 is now basically equivalent to
2931 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2932 (DECLARE (TYPE SINGLE-FLOAT X))
2934 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
2935 operation, without having to do run-time type dispatch.
2936 * The macroexpansion of DEFMETHOD has been tweaked so that it has
2937 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
2938 * Since I don't seem to be making big file reorganizations very often
2939 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
2940 is overflowing my ability to conveniently back them up), I've finally
2941 checked the system into CVS. (The CVS repository is on my home system,
2942 not at SourceForge -- putting it on SourceForge might come later.)
2943 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
2944 high-level GC-NOTIFY-FOO functions send their output. (There's
2945 still very little control of where low-level verbose GC functions
2946 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
2947 less than it used to -- the GC-NOTIFY-FOO functions are now under
2948 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
2949 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
2950 in only one place in the source code, and propagates it automatically
2951 everywhere that it's needed. Thus e.g. when I bump the version from
2952 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
2953 * The C source files now include boilerplate legalese and documentation
2954 at the head of each file (just as the Lisp source files already did).
2955 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
2956 to his page will be replaced with a link to his new CLiki service.
2958 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
2960 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
2961 * The build process now looks for GNU make under the default name "gmake",
2962 instead of "make" as it used to. If GNU make is not available as "gmake"
2963 on your system, you can change this default behavior by setting the
2964 GNUMAKE environment variable.
2965 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
2966 can build without error under CMU CL.
2968 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
2970 * There is now a partial SBCL user manual (with some new text and some
2971 text cribbed from the CMU CL manual).
2972 * The beginnings of a profiler have been added (starting with the
2973 CMU CL profiler and simplifying and cleaning up). Eventually the
2974 main interface should be through the TRACE macro, but for now,
2975 it's still accessed through vaguely CMU-CL-style functions and macros
2976 exported from the package SB-PROFILE.
2977 * Some problems left over from porting CMU CL to the new
2978 cross-compilation bootstrap process have been cleaned up:
2979 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
2980 instead of SB!XC:DEFMACRO, compounded by an oversight on my
2981 part when getting rid of the compiler *BACKEND* stuff.)
2982 ** The value of *NULL-TYPE* was screwed up, because it was
2983 being initialized before the type system knew the final
2984 definition of the 'NULL type. This screwed up several key
2985 optimizations in the compiler, causing inefficiency in all sorts
2986 of places. (I found it because I wanted to understand why
2987 GET-INTERNAL-RUN-TIME was consing.)
2988 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
2989 PROCLAIM FTYPE information. Unfortunately this broke binary
2990 compatibility again, since now the forms output by DEFGENERIC
2991 to refer to functions which didn't exist in 0.6.3.
2992 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
2993 can use the new (as of 0.6.3) transform for SOME into MAP into
2995 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
2996 values to (INTEGER 0 1000000), so that the time code will no longer
2997 occasionally get blown up by Linux returning 1000000 microseconds
2998 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
2999 its output conform to the ANSI spec. (Alas, this makes its output
3000 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3001 * A full call to MAP NIL with a single sequence argument no longer conses.
3002 * fixes to problems pointed out by Martin Atzmueller:
3003 * The manual page no longer talks about multiprocessing as though
3004 it were currently supported.
3005 * The ILISP support patches have been removed from the distribution,
3006 because as of version 5.10.1, ILISP now supports SBCL without us
3007 having to maintain patches.
3008 * added a modified version of Raymond Toy's recent CMU CL patch for
3009 EQUALP comparison of HASH-TABLE
3011 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3013 * The system still can't cross-compile itself with
3014 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3015 entails), but at least it can compile more of itself that way
3016 than it used to be able to, and various buglets which were uncovered
3017 by trying to cross-compile itself that way have now been fixed.
3018 * This release breaks binary compatibility again. This time
3019 at least I've incremented the FASL file format version to 2, so that the
3020 problem can be detected reliably instead of just causing weird errors.
3021 * various new style warnings:
3022 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3023 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3024 ** using the lexical binding of a variable named in the *FOO* style
3025 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3026 as specified by ANSI.
3027 * *RANDOM-STATE* is no longer automatically initialized from
3028 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3029 default behavior of the system is to repeat its behavior every time
3030 it's run. If you'd like to change this behavior, you can always
3031 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3032 old convention there was no comparably easy way to get the system to
3033 repeat its behavior every time it was run.
3034 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3035 FTYPE declarations has been removed, in favor of their ANSI
3036 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3037 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3038 the types of their sequence arguments can be determined at compile time.
3039 This is done through a new open code expansion for MAP which eliminates
3040 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3041 argument types can be determined at compile time.
3042 * The optimizer now transforms COERCE into an identity operation when it
3043 can prove that the coerced object is already of the correct type. (This
3044 can be a win for machine generated code, including the output of other
3045 optimization transforms, such as the MAP transform above.)
3046 * Credit information has been moved from source file headers into CREDITS.
3047 * Source file headers have been made more standard.
3048 * The CASE macro now compiles without complaining even when it has
3051 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3053 * (Note that the way that the PCL macroexpansions were rewritten
3054 to accommodate the change in DEFGENERIC below breaks binary
3055 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3056 not run under sbcl-0.6.2. Once we get out of alpha releases,
3057 i.e. hit release 1.0.0, we'll probably try to maintain binary
3058 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3059 and sbcl-1.4.4. Until then, however, it might be fairly common
3060 for maintenance releases to break binary compatibility.)
3061 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3063 * The reporting of unhandled signals has been changed to print some
3064 explanatory text as well as the report form. (Previously only
3065 the report form was printed.)
3066 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3067 it defines, so that the compiler no longer issues undefined function
3068 warnings for compiled-but-not-yet-loaded generic functions.
3069 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3070 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3071 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3072 section of the ANSI spec are supported.
3073 * The "" nickname for the "KEYWORD" package has been removed.
3074 The reader still handles symbol tokens which begin with a package marker
3075 as keywords, but it doesn't expose its mechanism for doing so in the
3076 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3077 * The system now issues STYLE-WARNINGs for contradictory TYPE
3078 proclamations. (Warnings for contradictory FTYPE proclamations would
3079 be nice too, but those can't be done usefully unless the type system
3080 is made smarter about FUNCTION types.)
3081 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3082 systematized, so that "*target-*.lisp is supposed to exist only on the
3083 target and imply that there's a related file which exists on the
3084 host, and *host-*.lisp is supposed to exist only on the host and imply
3085 that there's a related file which exists on the target. This involves a
3086 lot of renaming. Hopefully the acute confusion caused by the renaming
3087 will be justified by the reduction in chronic confusion..
3088 ** runtime-type.lisp -> early-target-type.lisp
3089 ** target-type.lisp -> late-target-type.lisp
3090 ** early-host-format.lisp -> early-format.lisp
3091 ** late-host-format.lisp -> late-format.lisp
3092 ** host-error.lisp -> misc-error.lisp
3093 ** early-error.lisp -> early-target-error.lisp
3094 ** late-error.lisp -> late-target-error.lisp
3095 ** host-defboot.lisp -> early-defboot.lisp
3096 ** code/misc.lisp -> code/target-misc.lisp
3097 ** code/host-misc.lisp -> code/misc.lisp
3098 ** code/numbers.lisp -> code/target-numbers.lisp
3099 ** code/early-numbers.lisp -> numbers.lisp
3100 ** early-host-type.lisp -> early-type.lisp
3101 ** late-host-type.lisp -> late-type.lisp
3102 ** host-typep.lisp -> typep.lisp
3103 ** load.lisp -> target-load.lisp
3104 ** host-load.lisp -> load.lisp
3105 ** host-disassem.lisp -> disassem.lisp
3106 ** host-insts.lisp -> insts.lisp
3107 ** byte-comp.lisp -> target-byte-comp.lisp
3108 ** host-byte-comp.lisp -> byte-comp.lisp
3109 ** host-signal.lisp -> signal.lisp
3110 ** host-defstruct.lisp -> defstruct.lisp
3111 ** late-target-type.lisp -> deftypes-for-target.lisp
3112 Furthermore, several other previously target-only files foo.lisp (e.g.
3113 hash-table.lisp and random.lisp) have been split into a target-and-host
3114 foo.lisp file and a target-only target-foo.lisp file, with their key type
3115 definitions in the target-and-host part, so that the cross-compiler will
3116 know more about target types.
3117 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3118 gone away. In their place are various *BACKEND-FOO* variables
3119 corresponding to the slots of the old structure.
3120 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3121 into the target SBCL has been fixed.
3122 * The chill.lisp system for loading cold code into a running SBCL
3124 * Support for the CMU CL "scavenger hook" extension has been removed.
3125 (It was undocumented and unused in the CMU CL sources that SBCL was
3126 derived from, and stale in sbcl-0.6.1.)
3127 * Various errors in the cross-compiler type system were detected
3128 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3129 (enabling various consistency checks). Many of them were fixed,
3130 but some hard problems remain, so the compiler is back to
3131 running without *TYPE-SYSTEM-INITIALIZED* for now.
3132 * As part of the cross-compiler type system cleanup, I implemented
3133 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3134 * I have started adding UNCROSS calls throughout the type system
3135 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3136 on cross-compiler input files will be able to go away, and various
3138 * CONSTANTP now returns true for quoted forms (as explicitly required
3141 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3143 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3144 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3145 (MAKE-LIST -1). In the longer term, it ought to become true
3146 that declarations are assertions even at SAFETY 1. For now, it's not
3147 quite true even at SAFETY 3, but it's at least more nearly true..
3148 (Note that this change seems to increases the size of the system by
3149 O(5%) and to decrease the speed of the compiler by 20% or more.)
3150 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3151 for the problem of printing dozens of lines of distracting information
3152 about low-level system machinery as part of the top stack frame
3153 on entry to the debugger when an undefined function was called.
3154 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3155 is not reset to COMMON-LISP-USER.
3156 * Compilation of stuff related to dyncount.lisp has been made conditional
3157 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3158 smaller. The various dyncount-related symbols have been moved into
3159 a new "SB-DYNCOUNT" package.
3160 * tty-inspect.lisp has been renamed to inspect.lisp.
3161 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3162 feature has gone away. (When we eventually port to other flavors of
3163 libc and/or Unix, we'll try to make the differences between flavors
3164 invisible at the user level.)
3165 * Various other *FEATURES* tags, and/or their associated conditionals,
3166 have been removed if obsolescent, or given better documentation, or
3167 sometimes given more-mnemonic names.
3169 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3171 * tidied up "make.sh" script
3172 * tidied up system directory structure
3173 * better "clean.sh" behavior
3174 * added doc/FOR-CMUCL-DEVELOPERS
3175 * many many small tweaks to output format, e.g. removing possibly-confusing
3176 trailing #\. character in DESCRIBE-INSTANCE
3177 * (EQUALP #\A 'A) no longer signals an error.
3178 * new hashing code, including EQUALP hashing
3179 * tidied up Lisp initialization and toplevel
3180 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3181 * command line argument processing
3182 * added POSIX-GETENV function to deal with Unix-ish environment variables
3183 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3184 terminating SBCL on EOF
3185 * non-verbose GC by default
3186 * There is no more "sbcl" shell script; the sbcl file is now the C
3187 runtime executable (just like CMU CL).
3188 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3190 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3191 symbol and package information as Lisp native symbol and package objects
3192 instead of strings naming symbols and strings naming packages. This way,
3193 whenever packages are renamed (as in warm init), debug information is
3194 transformed along with everything else.
3195 * tweaked the optimization policy declarations which control the building
3196 of SBCL itself. Now, among other things, the system no longer saves
3197 source location debugging information. (This helps two problems at once
3198 by reducing SBCL size and by keeping SBCL from trying to look for its
3199 sources -- which may not exist -- when reporting errors.)
3200 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3201 debugging and testing purposes
3202 * cleaned up printing, making the printer call PRINT-OBJECT for
3203 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3204 methods, giving nearly-ANSI behavior
3205 * converted almost all special variables to use *FOO* naming convention
3206 * deleted PARSE-TIME functionality, since it can be done portably
3207 * moved some files out of cold init into warm init
3208 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3210 * regularized formatting of source files
3211 * added an install.sh script
3212 * fixed ridiculous memory usage of cross-compiler by making
3213 compiler/alloc.lisp not try to do pooling unless it can hook
3214 itself into the GC of the cross-compilation host. Now the system
3215 builds nicely on my old laptop.
3216 * added :SB-ALLOC in target-features.lisp-expr
3217 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3218 was not implemented)
3219 * re-did condition handling and note reporting in the compiler. Notes
3220 are no longer handled by signalling conditions. Style warnings
3221 and warnings are handled more correctly and reported in such a way
3222 that it's easy to find one or the other in your output (so that you
3223 can e.g. figure out which of many problems caused COMPILE-FILE to
3225 * changed the severity of several compiler warnings from full WARNING
3226 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3227 compiler note reporting so that it doesn't use the condition system
3228 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3229 COMPILE-FILE command)
3230 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3231 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3232 no longer supported, since their implementation was deeply intertwingled
3233 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3234 * removed bogus "support" for compiler macros named (SETF FOO), and
3235 removed the compiler macro for SETF INFO (but only after making a fool
3236 of myself on the cmucl-imp mailing list by posting a bogus patch for
3237 DEFINE-COMPILER-MACRO..)
3238 * Compiled files containing forms which have side effects on the Lisp
3239 reader (such as DEFPACKAGE forms) are now handled more correctly.
3240 (Compiler queuing of top level lambdas has been suppressed by setting
3241 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3242 * deleted various currently-unused source files, e.g. gengc.lisp. They
3243 may be added back at some point e.g. when porting to other architectures,
3244 but until they are it's distracting to distribute them and to try to
3246 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3247 there were so many of them they're just distractions, and UNCROSS is
3248 known to be able to handle the current sources
3249 * moved PROFILE functionality into TRACE, so that it will be clear
3250 how the wrapping and unwrapping of functions when you profile them
3251 interacts with the wrapping and unwrapping of functions when you
3252 trace them. (Actually, the functionality isn't there yet, but at least
3253 the interface specification is there. Hopefully, the functionality will
3254 arrive with some future maintenance release.)
3255 * removed host-oops.lisp
3256 * changed signature of QUIT function to allow UNIX-CODE argument
3257 * fixed READ-SEQUENCE bug
3258 * tweaked verbose GC output so that it looks more like the progress
3259 output that ANSI specifies for functions like LOAD
3260 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
3261 * added <http://sbcl.sourceforge.com> to the banner information printed by