1 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2 * internal entry point details and argument counts no longer appear
3 in backtraces unless explicitly requested by setting
4 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
5 * built-in and standard functions no longer have names like "top
6 level local call to FOO".
7 * fixed bug 32: functions defined in non-null lexical environments
8 now have more legible printed representation
9 * fixed bug 33: functions defined in non-null lexical environemnts
10 are now more amenable to inspection by INSPECT.
11 * workaround for bug 354: XEPs no longer appear in backtraces unless
13 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
14 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
15 (reported by Lutz Euler)
16 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
17 compiled code. (reported by Paul Dietz)
18 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
19 specialized parameter to a method to something that is not TYPEP
20 the specializer is now possible.
21 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
22 face of package deletion.
23 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
24 pathname. (reported by David Tolpin on c.l.l)
25 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
26 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
27 STRING-STREAM and FILE-STREAM, respectively.
28 * fixed some bugs revealed by Paul Dietz' test suite:
29 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
31 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
32 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
33 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
35 * fixed loading of multiply forward-referenced layouts.
36 (thanks to Cheuksan Wang)
37 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
38 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
39 (see COMPILE-FILE documentation for details of :PRINT option)
40 * fixed bugs 19 and 317: fixed-format floating point printing is
41 more accurate. This also fixes a bug reported by Adam Warner
42 related to the ~@F format directive.
43 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
45 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
46 dispatch table if the from-char is a dispatch macro character.
47 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
48 by the wordsize no longer ignore the last word. (reported by Lutz
50 * fixed bug in type checking of dynamic-extent variables. (reported
52 * optimization: sequence traversal functions use their freedom to
53 coerce function designators to functions.
54 * optimization: code with many calls to CLOS methods specialized on
55 CLOS classes has had redundant type checks removed.
56 * optimization: added declarations to speed up operations that access
57 the internal character database (for example STRING-UPCASE)
58 * optimization: comparison operations between floats and sufficiently small
59 fixnums no longer create extra rationals
60 * fixed some bugs related to Unicode integration:
61 ** portions of multibyte characters at the end of buffers for
62 character-based file input are correctly transferred to the
63 start of the buffer at the next read.
64 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
65 passing it through to OPEN.
66 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
67 argument given to internal calls to OPEN.
68 ** the built-in comment readers (introduced by character sequences
69 ";" and "#|") are more forgiving to encoding errors; they will
70 STYLE-WARN and then attempt to resync the stream at a character
71 boundary. (thanks to Teemu Kalvas)
72 * fixed some bugs in the x86-64 port:
73 ** Negative short int return values from c-calls are sign-extended
75 ** The stack is aligned to 16-bytes for c-calls, as required by
76 the ABI. (thanks to Cheuksan Wang)
77 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
78 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
79 for enums. (thanks to Vincent Arkesteijn)
80 ** Multiple small optimizations and bugfixes for floating point
82 * fixed some bugs revealed by Paul Dietz' test suite:
83 ** Space, Tab, Linefeed, Return and Page have the invalid
84 secondary constituent character trait.
85 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
87 ** WITH-INPUT-FROM-STRING should only update the index place on
89 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
91 ** Bit-array operations (BIT-AND and similar) worked incorrectly
92 with one-dimensional arrays with fill pointers.
93 ** TYPE-OF failed on a complex with an integer realpart and a
95 ** compiler failure during type inference for the code of form
96 (IF (EQL X (THE ...)) ...) (MISC.535).
98 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
99 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
100 platform. The port supports 61-bit fixnums, large memory spaces
101 and reloading shared object files.
102 * enhancement: saving cores with foreign code loaded is now
103 supported on ppc/Darwin in addition to the previously supported
105 * enhancement: the statistical profiler now walks deeper into the
106 call stack for more meaningful call-graphs and accrued time
107 reports (x86/x86-64 only). It also now reports time spent in
109 * enhancement: it is now possible to trace most individual methods
110 of a generic function in addition to tracing the generic function
112 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
114 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
115 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
116 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
117 produces an error. (thanks to Vincent Arkesteijn)
118 * bug fix: NAMESTRING on pathnames with :WILD components in their
119 directories works correctly. (thanks to Artem V. Andreev)
120 * fixed bug 125: compiler preserves identity of closures. (reported
122 * bug fixed: functions with &REST arguments sometimes failed with
123 "Undefined function" when compiled with (DEBUG 3). (reported by
125 * bug fix: overflow during compiling of setting element of a bit
126 vector with constant index and value. (reported by Timmy Douglas)
127 * build fix: fixed the dependence on *LOAD-PATHNAME* and
128 *COMPILE-FILE-PATHNAME* being absolute pathnames.
129 * on x86 compiler partially supports stack allocation of dynamic-extent
131 * GO and RETURN-FROM do not check the extent of their exit points
132 when compiled with SAFETY 0.
133 * fixed some bugs related to Unicode integration:
134 ** encoding and decoding errors are now much more robustly
135 handled; it should now be possible to recover even from invalid
136 input or output to the terminal. (thanks to Teemu Kalvas)
137 ** provided a first cut at implementing STRING-TO-OCTETS and
138 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
139 ** altered the SB-MD5 contributed module slightly, changing the
140 interface just enough for it to be supportable for builds where
141 lisp characters are not eight bits.
142 * fixed some bugs revealed by Paul Dietz' test suite:
143 ** the FORMATTER-generated functions for ~V[ conditionals require
144 the correct number of arguments.
145 ** READ-FROM-STRING returns the mandated second value when applied
146 to displaced strings.
147 ** the #\Rubout and #\Backspace characters are treated as invalid
148 constituent characters by the tokenizer.
150 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
151 * new feature: reloading changed shared object files with
152 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
153 * new feature: references to foreign variables and functions
154 can now be compiled and loaded before the corresponding shared
155 object file is loaded, as long as the foreign definitions are
156 available at runtime.
157 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
158 supported. (thanks to Dan Debertin)
159 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
160 just keywords. (thanks to Vincent Arkesteijn)
161 * fixed bug #331: structure-class instances corresponding to
162 DEFSTRUCT forms are now created eagerly.
163 * fixed bug #345: backtraces from calls to undefined functions work
164 on x86 as well. Related bug #61 is now also partially fixed on x86
165 (backtraces from throws to unknown catch tags.)
166 * bug fix: lambda-list parsing is now stricter vrt. order and number
167 of lambda-list keywords.
168 * bug fix: as specified by AMOP, an error is signalled if a
169 class-option appears multiple times in a DEFCLASS form. (reported
171 * bug fix: RANDOM can be compiled when the compiler derives the type
172 of its numeric argument as a disjoint set of small integers.
173 (reported by Paul Dietz)
174 * bug fix: starting a core saved with shared objects loaded when
175 those objects are not available no longer causes threaded SBCL to
176 hang. (reported by Sean Ross)
177 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
179 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
180 argument, which must always be NIL. (reported by Kalle Niemitalo)
181 * bug fix: printing 1.0d+23 no longer results in an error.
182 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
183 * bug fix: structure slot setters preserve evaluation order. (thanks
185 * fixed some bugs related to Unicode integration:
186 ** RUN-PROGRAM can allow its child to take input from a Lisp
187 stream. (reported by Stefan Scholl)
188 ** ASDF-INSTALL successfully downloads .tar.gz files in all
189 locales. (reported by Ken Causey)
190 * fixed some bugs revealed by Paul Dietz' test suite:
191 ** INCF, DECF and REMF evaluate their place form as specified in
193 ** FORMATTER expands ~{ ~} iteration directives with V or #
194 parameters correctly.
195 ** FORMATTER deals with the ~@[ ~] conditional directive where the
196 consequent uses no arguments correctly.
197 ** the system has a partial understanding of the (COMPLEX RATIO)
199 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
202 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
203 * new feature: a build-time option (controlled by the :SB-UNICODE
204 keyword feature, enabled by default) for building the system with
205 support for the entire 21-bit character space defined by the
207 * new feature: the system now has rudimentary external-format
208 support; the primary user-visible change at this time is that
209 characters with the high bit set (such as lower-case-e-acute) will
210 print correctly to a terminal in a UTF-8 environment.
211 * minor incompatible change: BASE-CHAR no longer names a class;
212 however, CHARACTER continues to do so, as required by ANSI.
213 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
214 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
215 has been moved to the SB-EXT package (temporarily re-exported from
217 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
218 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
220 * fixed bug #351: better error-handlind and reporting for malformed
222 * fixed bug #350: bignum-printing is now more memory-efficient,
223 allowing printing of very large bignums, eg. (expt 2 10000000).
224 (reported by Bruno Haible)
225 * fixed bug #302: better primitive-type selection for intersection
227 * fixed bug #308: non-graphic characters now all have names, as
228 required. (reported by Bruno Haible)
229 * bug fix: redefining a class with different superclasses now correctly
230 removes it from the direct-subclasses of its previous superclasses.
231 (reported by David Morse)
232 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
233 new value now works. (reported by Bruno Haible)
234 * bug fix: correct canonicalization of multiple non-standard slot
235 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
236 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
237 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
238 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
239 now exists, an signals an error.
240 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
241 during macroexpansion for non-iteration variables as well. (reported
242 by Bruno Haible for CMUCL)
243 * bug fix: Cyclic structures and unprintable objects in compiler
244 messages no longer cause errors. (reported by Bruno Haible)
245 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
246 and READ-FROM-STRING all now return a primary value of NIL if
247 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
248 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
249 (reported by Bruno Haible for CMUCL)
250 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
251 do not designate a condition. (reported by Bruno Haible for
253 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
254 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
255 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
256 permitting resolution in favour of any of the conflicting symbols.
257 (reported by Bruno Haible for CMUCL)
258 * bug fix: EQUAL compiler optimizations is less aggressive on
259 strings which can potentially compare true despite having distinct
260 specialized array element types.
261 * bug fix: unit enumerations can be defined without dividing by
262 zero. (thanks to Vincent Arkesteijn)
263 * FORMAT compile-time argument count checking has been enhanced.
264 (report from Bruno Haible for CMUCL)
265 * a partial workaround for the bug 262: the compiler does not try to
266 inline-expand a local function doing RETURN-FROM from a deleted
267 BLOCK. (thanks to Peter Denno for the bug report and to David
268 Wragg for the simple test case)
269 * fixed some bugs revealed by Paul Dietz' test suite:
270 ** RENAME-PACKAGE allows all package designators as new package
272 ** constraint propagation and lambda variable substitution are
273 more cautious in dealing with partially deleted code.
274 ** compiler sometimes lost reoptimization passes.
275 ** CERROR, given a condition as condition designator, passes its
276 remaining arguments to the continue format control without
278 ** Case-altering FORMAT directives work correctly on non-ASCII
280 ** The REAL type specifier handles bounds outside the floating
281 point ranges without signalling FLOATING-POINT-OVERFLOW.
282 ** Functions with IR1-transformations can create intercomponent
283 references to global functions.
284 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
286 ** FORMAT ~R treats a nil value for its first parameter correctly.
288 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
289 * enhancement: saving cores with foreign code loaded is now
290 supported on x86/NetBSD and sparc/Linux in addition to the previously
292 * bug fix: on some platforms repeated installations caused multiple
293 copies of HTML documentation to be installed -- should not happen
294 any more. (reported by Stefan Scholl)
295 * bug fix: parsing self-recursive alien record types multiple times
296 no longer causes infinite recursion. (reported by Thomas F. Burdick,
297 original patch by Helmut Eller for CMUCL)
298 * bug fix: stack-exhaustion detection works now on NetBSD as well.
299 (thanks to Richard Kreuter)
300 * bug fix: defining classes whose accessors are methods on existing
301 generic functions in other (locked) packages no longer signals
302 bogus package lock violations. (reported by François-René Rideau)
303 * bug fix: special variables as DEFMETHOD parameters no longer have
304 associated bogus type declarations. (reported by David Wragg and
306 * bug fix: read-write consistency on streams of element-type
307 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
308 * bug fix: redefiniton of the only method of a generic function with
309 no DEFGENERIC no longer emits a full WARNING. In addition,
310 redefinition of generic functions with no DEFGENERIC to an
311 incompatible lambda list now signals an error. (thanks to Zach
313 * bug fix: DEFGENERIC now works even when there's a function of the
314 same name in an enclosing lexical environment. (thanks to Zach
316 * fixed compiler failure, caused by instrumenting code during
317 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
318 * optimization: added loop analysis and improved register allocation
319 * fixed some bugs revealed by Paul Dietz' test suite:
320 ** POSITION on displaced vectors with non-zero displacement
321 returns the right answer.
322 ** (SIMPLE-STRING) is a valid type specifier for sequence
324 ** *PRINT-LEVEL* handling for slotless structures is pedantically
326 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
327 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
329 ** The justification version of the FORMAT ~< directive treats
330 non-zero minpad parameter correctly.
332 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
333 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
334 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
335 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
336 the supported interface.
337 * new feature: Single-stepping of code compiled with DEBUG 2 or
338 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
339 * new feature: saving cores with foreign code loaded is now
340 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
341 Timothy Moore's work for CMUCL)
342 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
343 parameters to * instead of NIL if no initform is supplied.
344 (reported by Johan Bockgaard)
345 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
346 correctly when FUNCALL appears as the car of the form. Note:
347 despite this FUNCALL forms are not currently subject to
348 compiler-macro expansion. (port of Raymond Toy's fix for the
349 same from CMUCL, reported by Johan Bockgaard)
350 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
351 (thanks for Teemu Kalvas)
352 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
353 case instead of terminating the iteration (thanks for Julian
354 Squires, Sean Champ and Raymond Toy)
355 * bug fix: incorrect expansion of defgeneric that caused a style
356 warning. (thanks for Zach Beane)
357 * bug fix: slot accessor effective method computation works properly
358 for classes with multiple non-standard applicable methods on
359 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
360 * on x86 compiler supports stack allocation of results of LIST and
361 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
362 CMUCL implementation by Gerd Moellmann)
363 * fixed some bugs revealed by Paul Dietz' test suite:
364 ** FORMAT strings with both the ~<~:;~> form of the justification
365 directive and pretty-printing directives cause an error.
367 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
368 * incompatible change: the internal functions
369 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
370 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
371 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
372 instead of the old functions.
373 * new feature: on platforms where "dladdr" is available foreign
374 function names now appear in backtraces. (based on Helmut Eller's
376 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
377 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
379 * documentation: ASDF manual is now distributed with SBCL.
380 * bug fix: SBCL can now load its contributed modules with REQUIRE
381 even if the system-provided entries have been removed from
382 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
384 * bug fix: backtraces involving undefined functions or assembly
385 routines are more informative. (thanks to Brian Downing)
386 * bug fix: mutually referent alien structures now work correctly.
387 (reported by Rick Taube)
388 * bug fix: structures defined by WITH-ALIEN can be referred to
389 within other definitions in the same WITH-ALIEN.
390 * bug fix: division operators (MOD, TRUNCATE and the like) with
391 constant zero divisors and integer dividends no longer generate
393 * bug fix: provide default methods for INPUT-STREAM-P and
394 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
395 * bug fix: improve the detection and resolution of MOP metacycles
396 (where effective method computation depends on the generic function
397 having its effective method computed). (reported by Bruno Haible)
398 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
399 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
400 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
401 * bug fix: pathnames with relative directory components can be
402 represented relative to default pathnames.
403 * optimization: in taking the GCD of bignums, reduce the two bignums
404 to approximately the same size (using Euclid's algorithm) before
405 applying the more sophisticated binary GCD. (thanks to Juho
407 * optimization: COUNT on bitvectors now operates word-at-a-time.
408 * optimization: ASH with a positive, but not necessarily constant,
409 (leftwards) shift, when in a modular context, is compiled to a
411 * fixed some bugs revealed by Paul Dietz' test suite:
412 ** FORMAT variable parameters ("~V<char>") are defaulted properly
413 if the corresponding argument is NIL.
414 ** FORMAT directives accepting a minpad parameter treat negative
416 ** literal commas as character parameters to FORMAT directives are
418 ** literal spaces directly after ~<Newline> directives within a
419 format-logical-block (~:< ~@:>) do not induce :FILL-style
420 conditional newlines.
421 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
422 as specified: it no longer includes conditional newlines).
423 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
425 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
426 :PER-LINE-PREFIX argument does not evaluate to a string.
428 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
429 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
430 the manual for details; for now, package locks can be disabled by
431 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
432 if no major problems are found then it is likely that they will be
433 compiled in unconditionally.
434 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
435 unsupported operators on all platforms. To load a shared library
436 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
437 object file, link it into a shared library outside of SBCL and
438 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
440 * bug workaround: ROOM T and the GC were not working together
441 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
442 reporting facility aren't preserved. That reporting has been
443 disabled, so now until and unless someone figures out how to make it
444 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
445 * minor incompatible change: as threatened around sbcl-0.8.0, the
446 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
447 The symbols are also exported from SB-PCL for backwards
448 compatibility, but more so than before SB-PCL should be treated as
449 an implementation-internal package.
450 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
452 * the SB-SPROF contrib now works on (most) non-x86 architectures.
453 It is known as of this release not to work on the Alpha, however.
454 * fixed bug #167: errors signalled due to illegal syntax in method
455 bodies are now more legible.
456 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
457 designators and can hence be used with TYPEP.
458 * fixed bug #333: CHECK-TYPE now ensures that the type error
459 signalled, if any, has the right object to be accessed by
460 TYPE-ERROR-DATUM. (reported by Tony Martinez)
461 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
462 5.1.2.3 for multiple-value place subforms. (reported by Kalle
464 * fixed bug #334: programmatic addition of slots using specialized
465 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
466 and :ALLOCATION :CLASS slots.
467 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
468 float exponents. (rereported by Peter Seibel)
469 * fixed a bug: #\Space (and other whitespace characters) are no
470 longer considered to be macro characters in standard syntax by
472 * fixed bug: initialization of condition class metaobjects no longer
473 causes an instance of the condition to be created. (reported by
475 * fixed bug: it is now possible to have slots such that
476 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
477 description is neither :INSTANCE nor :CLASS.
478 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
479 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
480 SLOT-VALUE-USING-CLASS), and no longer causes errors with
481 non-standard SLOT-DEFINITION-ALLOCATION values.
482 * fixed bugs: various race conditions handling exiting threads.
483 CL-PPCRE's thread torture test now passes.
484 * fixed arguably-a-bug: GC time proportional to number of threads in
485 system even when most of them are idle
486 * optimization: improved performance of BIT and SBIT on bit-vectors.
487 * .fasl file incompatibility: The fasl file version number has
488 been incremented because of changes associated with package locks.
490 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
491 * minor incompatible change: the system no longer provides
492 optimization hints (conditions which are TYPEP
493 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
494 mode; these hints are still emitted when higher SPEED optimization
496 * new contrib module: a sampling profiler (profiling by statistical
497 sampling, rather than by instrumenting functions) is available as
498 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
499 * the behaviour of the standard function ED is now customizeable by
500 third parties through a hook variable: see ED's documentation
501 string for information on the protocol.
502 * the compiler no longer emits efficiency notes for (FUNCALL X)
503 when the type of X is uncertain under default optimization
505 * fixed bug 276: mutating a binding of a specialized parameter to a
506 method to something that is not TYPEP the specializer is now
508 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
509 exhibit the required behaviour on the x86 platform. (thanks to
510 Peter van Eynde, Eric Marsden and Bruno Haible)
511 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
512 even for difficult arguments. (reported by Peter Graves)
513 * fixed bug 141a: the backquote printer now descends quoted
515 * fixed another bug in backquote printing: no more destructive
516 modification of the form's list structure. (reported by Brian
518 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
519 move between its address being taken and the call to
520 interrupt_thread, fixing a crashing race condition.
521 * the SB-POSIX contrib implementation has been adjusted so that it
522 no longer exhibits ridiculously poor performance when constructing
523 instances corresponding to C structs.
525 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
526 * minor incompatible change: the sb-grovel contrib now treats C
527 structures as alien (in the sense of SB-ALIEN) objects rather than
528 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
529 has implications for memory management of client code
530 (sb-grovel-returned objects must now be manually managed) and for
531 type safety (alien objects now have full types).
532 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
533 used to control emission of compiler diagnostics, rather than the
534 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
535 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
536 quality should be considered deprecated.
537 * install.sh now installs the user manual as well
538 * (not quite a new documentable feature, but worth considering in
539 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
540 beginnings of a semantically meaningful condition hierarchy is
541 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
543 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
544 designator as the defaults argument.
545 * fixed bug: Displaced arrays whose displaced-to array has become
546 too small now cause ARRAY-DIMENSION to signal an error, providing
547 for safer bounds-checking. (reported by Bruno Haible)
548 * fixed bug: DEFCLASS slot definitions with identical :READER and
549 :WRITER names now signal a reasonable error. (reported by Thomas
551 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
553 * fixed bug: Invalid slot specification errors now print correctly.
554 (thanks to Zach Beane)
555 * fixed bug 320: Shared to local slot value transfers in class
556 redefinitions now happen corrently from superclasses as
557 well. (reported by Bruno Haible)
558 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
560 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
561 improper lists correctly. (reported by Bruno Haible)
562 * fixed bug 313: source-transform for <fun-name> was erroneously
563 applied to a call of a value of a variable with name <fun-name>.
564 (reported by Antonio Menezes Leitao)
565 * fixed bug 307: The obsolete instance protocol ensures that
566 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
567 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
568 remove dead unknown-values globs from the middle of the stack.
569 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
570 easier to resume long computations after using *BREAK-ON-SIGNALS*
571 to diagnose and fix failures. (thanks to Nikodemus Siivola)
572 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
573 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
574 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
575 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
576 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
578 * fixed a (fairly theoretical) bug in string printing: if
579 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
580 does not have array-element-type equal to the most general string
582 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
583 function name. (thanks to Nikodemus Siivola)
584 * fixed bug: compile-time format string checker failed on
585 non-closed ~{. (reported by Thomas F Burdick)
586 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
587 don't warn on legal loop code involving more than one aggregate
588 boolean. (thanks to Nikodemus Siivola)
589 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
590 in keyword position to MAKE-PACKAGE was not being reported as
592 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
593 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
595 * fixed bugs 280 and 312: the checking for multiple definitions in a
596 file is less likely to become confused by uses of inline
598 * fixed bug: the #S reader macro performs the keyword coercion
599 specified for slot names. (reported by Kalle Niemitalo)
600 * fixed bug: lambda lists may contain symbols whose names start with
601 & but are not lambda-list-keywords; their occurrence triggers a
603 * fixed bug 321: define-method-combination argument lambda lists do
604 not cause invalid code to be generated when &optional or &aux
605 variables have default values. (reported by Bruno Haible)
606 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
607 have CLOS classes; this appears also to have fixed reported
608 instability in stack exhaustion detection.
609 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
610 MUFFLE-WARNING when no associated restart is present is now
612 * optimization: rearranged the expansion of various defining macros
613 so that each expands into only one top-level form in a
614 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
616 * optimization: used a previously little-used slot in symbols to
617 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
619 * fixed some bugs revealed by Paul Dietz' test suite:
620 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
622 ** Fixed an optimization bug related to inheritance of initforms
623 from local to shared slots.
624 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
625 ** CAST optimizer forgot to flush argument derived type.
626 ** print/read consistency on floats is now orders of magnitude
627 more likely. (thanks also to Bruno Haible for a similar report
629 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
630 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
631 for objects of type REAL. Make it so.
632 ** SXHASH is specified (infelicitously) to respect similarity,
633 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
634 it so. (thanks to Markus Ziegler)
635 ** on the Alpha, the compiler succeeds in compiling functions
636 returning a known number of arguments greater than 63.
637 ** fixed handling of invalid NIL arguments in keyword position
639 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
641 ** provided a readably-printable representation for RANDOM-STATE
643 ** ensured that pathnames, where they have a namestring, always
644 print using #P"..." syntax.
646 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
647 * Support for the forthcoming 2.0 version of the NetBSD kernel
648 running on x86 hardware has been added. (thanks to Perry
649 E. Metzger most immediately, and others for their past work)
650 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
651 current release version; SBCL's OpenBSD support had been broken
652 since about the time of OpenBSD's switch to ELF binary format.)
653 * [placeholder for DX summary]
654 ** user code with &REST lists declared dynamic-extent, under high
655 speed or space and low safety and debug optimization policy.
656 * The manual has been converted to Texinfo format and the debugger
657 chapter from the cmucl manual has been added.
658 * A facility has been added to extract documentation strings from
659 sbcl and store them as Texinfo-formatted snippets for inclusion in
660 the manual (via Texinfo's @include directive)
661 * bug fix: compiler emitted division in optimized DEREF. (thanks for
662 the test case to Dave Roberts)
663 * bug fix: multidimensional simple arrays loaded from FASLs had fill
664 pointers. (reported by Sean Ross)
665 * bug fix: PROFILE output is printed nicely even for large numerical
666 values. (thanks to Zach Beane)
667 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
668 greater than 32 handle EOF correctly.
669 * bug fix: on X86 an immediate argument of the IMUL instruction is
670 correctly printed in disassembly. (thanks to Lutz Euler)
671 * bug fix: class slots in redefined classes preserve their old
672 values. (thanks to Bruno Haible and Nikodemus Siivola)
673 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
674 succeeds. (reported by Marco Baringer)
675 * fixed some bugs revealed by Paul Dietz' test suite:
676 ** READ-SEQUENCE now works on ECHO-STREAMs.
677 ** RATIONALIZE works more according to its specification. (thanks
680 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
681 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
682 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
683 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
684 should matter to you only if you rebind the printer control
685 variables and then find you want different bindings in the
686 debugger than in the ordinary execution of your program.)
687 * The runtime build system has been tweaked to support building
688 (on SPARC/SunOS) using a C compiler which invokes Sun's own
689 assembler and linker. (thanks to Nikodemus Siivola)
690 * Unbound, undefined, undeclared variables now trigger full
691 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
692 more often programmer error than deliberate exploitation of undefined
694 * optimization: the hash algorithm for strings has changed to one
695 that is less vulnerable to spurious collisions. (thanks to Juho
697 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
698 needless bounds checking. (thanks to Juho Snellman)
699 * optimization: implemented multiplication as a modular
700 (UNSIGNED-BYTE 32) operation on the PPC backend.
701 * fixed some bugs revealed by Paul Dietz' test suite:
702 ** ADJUST-ARRAY now copies the datum in a zero rank array if
704 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
705 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
706 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
708 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
710 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
712 ** ECHO-STREAMs no longer attempt to echo the end of file value to
713 their output stream on EOF from read.
714 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
715 have been read to end-of-file.
716 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
718 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
719 description of determination of which consecutive characters
721 ** Printing the "Space" character with escaping on now yields "#\\ ",
722 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
723 ** Reading floating-point numbers with *READ-BASE* set to a number
724 less than 10 works correctly.
725 ** Reading floating-point numbers with *READ-BASE* set to a number
726 more than 10 works correctly.
727 ** Printing with *PRINT-READABLY* targets the standard readtable, not
728 the readtable currently in effect.
730 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
731 * minor incompatible change: parsing of namestrings on a physical
732 (Unix) host has changed; numbers after the final #\. in a
733 namestring are no longer interpreted as a version field. This is
734 intented to be largely invisible to the user, except that the
735 meaning of the namestring "*.*.*" has changed: it now refers to a
736 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
737 should usually be replaced by
738 (make-pathname :name :wild :type :wild :version :wild)
739 with the added benefit that this is more likely to be portable.
740 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
741 option to OPEN now signals an error if the file being opened
742 exists; this may have an impact on existing code.
743 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
744 signals received, on the PowerPC platforms (both Linux and
745 Darwin). (thanks to Pierre Mai for pointing out the location of
747 * several fixes on OS X: The system now builds and runs cleanly on
748 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
749 (thanks to Brian Mastenbrook)
750 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
751 second-resolution: integer multiples of 1/3600 between -24 and 24.
752 (thanks to Vincent Arkesteijn)
753 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
754 type when called with 1 argument; PEEK-CHAR checked type of
755 PEEK-TYPE only after having read first character from a
756 stream. (reported by Peter Graves)
757 * bug fix: the garbage collector now has much better locality
758 behaviour, and in particular no longer treats all memory as being
759 exhausted when many small objects point to each other in a deeply
761 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
762 recognized as being TYPEP their class.
763 * bug fix: the PUSHNEW documentation string has been corrected.
764 (thanks to Vincent Arkesteijn)
765 * bug fix: defaulting of the value for the last of an atypically
766 large number of multiple values being bound was not being
767 performed correctly on the Alpha or PPC platforms
768 * optimization: implemented multiplication as a modular
769 (UNSIGNED-BYTE 32) operation on the x86 backend.
770 * optimization: SEARCH on simple-base-strings can now be open-coded.
771 (see also contrib/compiler-extras.lisp for inspiration for
772 teaching the compiler about the Boyer-Moore algorithm).
773 * value, returned by MAX (and MIN) called with several EQUALP, but
774 not EQL, arguments now does not depend on compiler settings.
775 * fixed some bugs revealed by Paul Dietz' test suite:
776 ** in stack analysis liveness information is propagated from
777 non-local entry points.
778 ** pathwise CAST removing failed when the CAST node did not start
780 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
781 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
783 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
784 host is already defined.
785 ** RENAME-FILE works on streams instead of signalling an internal
787 ** PEEK-CHAR uses the current readtable when determining whether
788 or not a character is whitespace.
789 ** MERGE-PATHNAMES handles the case when the pathname does not
790 specify a name while the default-pathname specifies a version.
791 ** Pathnames now stand a better chance of respecting print/read
793 ** Attempting to use standardized file system operators with a
794 pathname with invalid :DIRECTORY components signals a
796 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
798 ** DIRECTORY on logical pathnames is more correct.
799 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
800 signal a TYPE-ERROR if their argument is not a stream.
801 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
802 designator argument does not designate a stream.
803 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
804 examining the synonym.
805 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
807 ** OPEN and WITH-OPEN-STREAM allow opening streams with
808 element-type larger than ([UN]SIGNED-BYTE 32).
810 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
811 * When built with the :SB-FUTEX feature, threaded builds now take
812 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
813 for faster/more reliable mutex and condition variable support.
814 * Incompatible change (but one you probably shouldn't have been using
815 anyway): the interface and code for arbitrating between multiple
816 threads in the same user session has been redesigned.
817 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
818 error when called without an explicit environment argument.
819 (thanks to Nikodemus Siivola)
820 * bug fix: buffered :DIRECTION :IO streams are less likely to become
821 confused about their position. (thanks to Adam Warner and Gerd
823 * bug fix: Pretty printing backquoted forms with unquotations in the
824 argument list position of various code constructs such as LAMBDA
825 now works correctly. (reported by Paul Dietz)
826 * bug fix: Pretty printing unquotations no longer loses all
827 stream position information.
828 * optimization: performance of string output streams is now less
829 poor for multiple small sequence writes.
830 * optimization: performance of CSUBTYPEP in the presence of complex
831 expressions involving CONS and NOT many times has been improved.
832 (reported by Paul Dietz)
833 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
835 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
836 streams for the REPL, for the debugger, and so on. (thanks to
838 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
839 * fixed some bugs revealed by Paul Dietz' test suite:
840 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
841 is ignored if it is too small, rather than propagating through
842 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
843 ** extremely complex negations of CONS types were not being
844 sufficiently canonicalized, leading to inconsistencies in
846 ** VALUES tranformer lost derived type.
848 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
849 * fixed a bootstrapping bug: the build process no longer assumes
850 that the various BOOLE-related constants have the same value in
851 host and target lisps. (noted by Paul Dietz' test suite on an
852 SBCL binary built from CLISP)
853 * The system can now be dynamically linked on the MIPS platform,
854 which enables dynamic loading of foreign code from Lisp. (thanks
855 to Ralf Baechle for discussions on the MIPS ABI)
856 * The system now records debugging information for its own source
857 files in a filesystem-position-independent manner, relative to
858 the "SYS" logical host.
859 * fixed a compiler bug: MV-LET convertion did not check references
860 to the "max args" entry point. (reported by Brian Downing)
861 * tweaked disassembly notes to be less confident about proclaiming
862 some instruction as an LRA. (thanks to Brian Downing)
863 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
864 now each have their own history, command character, and other
865 characteristics. (thanks to David Lichteblau)
866 * fixed some bugs revealed by Paul Dietz' test suite:
867 ** compiler failure in compiling LOGAND expressions including a
869 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
870 shift greater than 32.
871 ** FLUSH-DEST did not mark blocks for type check regeneration.
872 ** HANDLER-CASE failed to accept declarations in handler clauses
873 in some circumstances.
875 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
876 * New code in contrib/sb-introspect (still probably not entirely
877 stable yet) provides some support for smart Lisp development
878 environments like SLIME.
879 * The conditions signalled for errors occurring when loading .fasl
880 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
881 in a way which should help ASDF recover gracefully.
882 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
883 stuff has been cleaned up. If you code contrib/ stuff, this might
884 affect you, and you can look at contrib/README, contrib/STANDARDS,
885 and/or the 0.8.4.27 diff to check.
886 * In full calls the compiler now does not generate checks for declared
887 argument types for all arguments.
888 * various threading fixes
889 ** and some experimental patches which didn't make it into
890 the main tree for this release, but which are shipped in
891 contrib/experimental-thread.patch as a possible fix for some
892 failures (deadlock, spinning...) in GC-intensive multithreaded
894 * fixed PPC build problem (source code incompatibility of different
895 library versions): added offsetof() hackery which attempts to divine
896 where glibc maintainers put uc_mcontext today
897 * fixed bug 282: compiler does not trust type assertions while passing
898 arguments to a full call.
899 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
900 &OPTIONAL VALUES type parameter.
901 * fix bug 214: algorithm for noting rejected templates is now more
902 similar to that of template seletion. (also reported by rydis on
904 * fixed bug 141b: printing backquoted information readably and prettily
905 inserts a space where necessary.
906 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
907 (CHARACTER 10) are now reported as errors, rather than propagated
908 as unknown types. (reported by piso on #lisp)
909 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
910 with values NIL and :ERROR. (thanks to Milan Zamazal)
911 * fixed bug 191c: CLOS now does proper keyword argument checking as
912 described in CLHS 7.6.5 and 7.6.5.1.
913 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
914 longer raise an error; further, using a list as a for-as-arithmetic
915 counter now raises a meaningful error.
916 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
917 now understood by sequence creation functions such as MAKE-SEQUENCE
919 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
920 a STRING-INPUT-STREAM.
921 * compiler enhancement: SIGNUM is now better able to derive the type
923 * type declarations inside WITH-SLOTS are checked. (reported by
925 * fixed some bugs revealed by Paul Dietz' test suite:
926 ** incorrect optimization of TRUNCATE for a positive first
927 argument and negative second.
928 ** compiler failure in let-convertion during flushing dead code.
929 ** compiler failure while deriving type of TRUNCATE on an
930 interval, containing 0.
931 ** ASH of a negative bignum by a negative bignum count now returns
933 ** intersection of CONS types now canonicalizes properly, fixing
934 inconsistencies in SUBTYPEP.
936 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
937 * incompatible change: The --disable-debugger command line
938 option now clobbers the debugger at a more fundamental
939 level, by redefining #'INVOKE-DEBUGGER instead of by
940 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
941 is specified by ANSI to ignore *DEBUGGER-HOOK* and
942 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
943 enter the debugger REPL and then suffer recursive errors
944 because *DEBUG-IO* is also messed up in --disable-debugger mode;
945 while under the new system, BREAK in --disable-debugger mode
946 terminates the system just as an unhandled error would.
947 * fixed compiler performance when processing loops with a step >1;
948 * bug fix: DOCUMENTATION now retrieves generic function
949 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
950 support has been systematized, and now supports the methods
951 specified by ANSI, along with a default method and a method for
952 slot documentation. (reported by Nathan Froyd)
953 * bug fix: effective methods associated with a generic function are
954 no longer cached over a change of that generic function's method
955 combination. (reported by Andreas Fuchs)
956 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
957 names a non-existent directory. (thanks to Andreas Fuchs)
958 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
959 the PPC platform, lead to stack corruption; this has been fixed.
960 (reported by Rainer Joswig)
961 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
962 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
963 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
964 arithmetic in general, is now much more reliable on the PPC
966 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
967 platform now returns the right answer.
968 * optimization: restored some effective method precomputation in
969 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
970 precomputation is now tunable.
971 * optimization: compiler-internal data structure use has been
972 reviewed, and changes have been made that should improve the
973 performance of the compiler by about 20%.
974 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
975 simple-base-strings and simple-bit-vectors is improved.
976 * optimization: the optimization of 32-bit logical and arithmetic
977 functions introduced in version 0.8.3 on the x86 has been
978 implemented on the mips, ppc and sparc platforms; an
979 implementation of the same facility, but for 64-bit arithmetic,
980 has been added for the alpha.
981 * microoptimization: the compiler is better able to make use of the
982 x86 LEA instruction for multiplication by constants.
983 * bug fix: in some situations compiler did not report usage of
984 generic arithmetic in (SPEED 3) policy.
985 * bug 145b fix: compiler used wrong type specifier while converting
986 MEMBER-types to numeric.
987 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
989 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
990 index argument now works properly on the Alpha platform.
991 * bug fix: floating point exception treatment on the Alpha platform
993 * bug fix: FILE-POSITION works much better on string input and
994 output streams. (thanks to Nikodemus Siivola)
995 * bug fix: many threading/garbage collection symptoms sorted.
996 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
997 might be pseudo-atomic.
998 * internal change: Stopping for GC is now done with signals not
999 ptrace. GC is now done in whichever thread wanted it, instead of
1001 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1003 * bug fix: result form in DO is not contained in the implicit
1005 * incompatible change: ICR structure is changed; the value part of
1006 CONTINUATION is now called LVAR; corresponding functions are
1007 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1008 * added type deriver for ISQRT (thanks to Robert E. Brown).
1009 * bug fix: better support for loading from the command line when an
1010 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1012 * fixed some bugs revealed by Paul Dietz' test suite:
1013 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1014 ** ROUND and FROUND now give the right answer when given very
1015 small float arguments.
1016 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1018 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1019 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1020 ** LCM should return a non-negative integer.
1021 ** PARSE-INTEGER returned the index of a terminator instead of the
1022 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1023 ** PARSE-INTEGER returned an incorrect index being applied to a
1025 ** LCM with two arguments of 0 returns 0 rather than signalling
1027 ** unsigned addition of a 32-bit constant with the high bit set no
1028 longer causes an internal compiler error on the x86.
1029 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1030 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1031 with negative last argument.
1032 ** byte specifiers with zero size and position no longer cause
1033 an error during type derivation.
1034 ** bignum multiplication on the Alpha platform now returns the
1036 * porting: The system now builds on SuSE AMD64, although it still
1037 generates a 32-bit binary.
1038 * .fasl file incompatibility: The fasl file version number has
1039 been incremented (because of the changes to internal compiler
1040 data structures referred to above).
1042 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
1043 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
1044 more accurately, on the Darwin kernel running on PowerPC hardware.
1045 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
1046 * Compiler code deletion notes now signal a condition of type
1047 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
1048 an associated MUFFLE-WARNING restart.
1049 * The compiler now performs limited argument count validation of
1050 constant format strings in FORMAT, and where appropriate in ERROR,
1051 CERROR and WARN. (thanks to Gerd Moellmann)
1052 * New ASDF-INSTALL contrib can be used for automatic download and
1053 installation of third-party Lisp code from CCLAN or other sites
1055 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
1056 which forces another thread to execute a function supplied by the
1058 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
1059 now accept and act upon their :ELEMENT-TYPE keyword argument.
1060 (reported by Martin Atzmueller, Edi Weitz)
1061 * bug fix: FILE-POSITION now accepts position designators up to
1062 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
1063 is the greater. (thanks to Patrik Nordebo)
1064 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
1065 Kalle Olavi Niemitalo)
1066 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
1067 printable. (reported by Eric Marsden)
1068 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
1069 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
1070 * x86 bug fix in control stack exhaustion checking: now shows backtrace
1071 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
1072 (thanks to Stig Sandoe)
1073 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
1074 UNREAD-CHAR now correctly includes the unread character in the
1075 target sequence. (thanks to Gerd Moellmann)
1076 * bug fix in threaded builds: the system can now be suspended and
1077 resumed by shell job control with minimal disruption.
1078 * bug fixes in times and timezones >2038AD
1079 * better handling of "where is GNU make?" problem in build scripts
1080 (thanks to Nikodemus Siivola)
1081 * new optimization: inside a named function any reference to a
1082 function with the same name is considered to be a self-reference;
1083 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
1084 optimization quality.
1085 * new optimization on x86: logical functions and + now have
1086 optimized (UNSIGNED-BYTE 32) versions, which are automatically
1087 used when the result is truncated to 32 bits.
1088 * VALUES declaration is partially enabled.
1089 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
1090 * fixed some bugs revealed by Paul Dietz' test suite:
1091 ** The system now obeys the constraint imposed by
1092 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
1093 types form a lattice under type intersection.
1094 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
1095 ** ASSOC now ignores NIL elements in an alist.
1096 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
1097 and (1+ MOST-POSITIVE-FIXNUM) answers.
1098 ** The addition of a method with invalid qualifiers to a generic
1099 function does not cause an error to be signalled immediately;
1100 a warning is signalled, and the error is generated only on
1101 calling the generic function.
1102 * changed .fasl file version number, in part to add type codes for
1103 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
1104 obscure ANSI requirements
1106 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
1107 * fixed bug 148: failure to inline-expand a local function left
1108 garbage, confusing the compiler.
1109 * fixed bugs 3cd: structure slot readers perform type check if the
1110 slot can have an invalid value (i.e. it is either not initialized
1111 or can be written with a less specific slot writer).
1112 * bug fix: the compiler now traps array references to elements off
1113 the end of an array; previously, the bounds checking in some
1114 circumstances could go off-by-one.
1115 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
1117 * type declarations for array element types now obey the description
1118 on the CLHS page "Declaration TYPE", as per discussions on
1119 sbcl-help around 2003-05-08. This means that a declaration
1120 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
1121 declaration, all references to BAR will be asserted or assumed
1122 (with THE, so dependent on compiler policy) to involve objects of
1123 type FOO. Note that no such declaration is implied in
1124 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
1125 * declared types of functions from the "Conditions"
1126 chapter. (reported by Paul Dietz)
1127 * bug fix: CERROR accepts a function as its first argument.
1128 * bug fix: NTH an NTHCDR accept a bignum as index
1129 arguments. (reported by Adam Warner)
1130 * optimization: character compare routines now optimize comparing
1131 against a constant character. (reported by Gilbert Baumann)
1132 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
1133 argument now works properly on the MIPS platform.
1134 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
1135 * repeated evaluation of the same DEFSTRUCT, a slot of which is
1136 declared to have a functional type, does not cause an error
1138 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
1139 many :DEFAULT-INITARGS. (reported by Istvan Marko)
1140 * fixed bug: if last continuation of a deleted block has a
1141 destination, this destination should be deleted too. (reported by
1143 * fixed a bug in the bootstrap process: the host compiler's values
1144 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
1145 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
1146 test case from Patrik Nordebo)
1147 * improved the ability of the disassembler on the PPC platform to
1148 provide helpful disassembly notes.
1149 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
1150 the class in more cases than previously.
1151 * bug fix: FILE-POSITION now understands :START and :END for
1152 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
1153 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
1154 8) data. (thanks to David Lichteblau)
1155 * bug fix: it is possible to add a method to a generic function
1156 without lambda list.
1157 * bug fix: reader failed to signal END-OF-FILE inside an
1158 object representation. (reported by Nikodemus Siivola)
1159 * fixed some bugs revealed by Paul Dietz' test suite:
1160 ** LAST and [N]BUTLAST should accept a bignum.
1161 ** condition slot accessors are methods.
1162 ** (VECTOR NIL) is a subtype of STRING.
1164 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
1165 * minor incompatible change: some nonsensical specialized lambda
1166 lists (used in DEFMETHOD) which were previously ignored now signal
1168 * minor incompatible change: the system is now aware of the types of
1169 variables in the COMMON-LISP package, and will signal errors for
1170 most violations of these type constraints (where previously they
1171 were silently accepted).
1172 * minor incompatible change: COMPILE-FILE now uses the freedom
1173 afforded (ANSI 3.2.2.3) to use derived function types for
1174 functions defined in the same file. This also permits the system
1175 to warn on static type mismatches and function
1176 redefinition. (Currently it does not work with high DEBUG level.)
1177 * minor incompatible change: VALUES declaration is disabled.
1178 * When issuing notes, the compiler now signals a condition of type
1179 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
1180 restart for use in user handlers. It is expected that the
1181 COMPILER-NOTE condition will eventually become a condition
1182 supertype to a hierarchy of note types, which will then be
1183 handleable in a similar fashion. However, at the moment, no such
1184 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
1185 but it's an implementation detail, not a classification for the
1187 * Changes in type checking closed the following bugs:
1188 ** type checking of unused values (192b, 194d, 203);
1189 ** template selection based on unsafe type assertions (192c, 236);
1190 ** type checking in branches (194bc).
1191 * A short form of VALUES type specifier has ANSI meaning (it has
1192 increased the number of situations when SBCL cannot perform type
1194 * fixed bug in DEFSTRUCT: once again, naming structure slots with
1195 keywords or constants is permissible.
1196 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
1197 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
1198 classes. (thanks to Antonio Martinez)
1199 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
1200 outputs FRESH-LINE or TERPRI, and no longer converts its stream
1201 argument to a pretty-print stream. Instead, it leaves any such
1202 operations to DESCRIBE-OBJECT methods.
1203 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
1205 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
1206 lambda lists. (thanks to David Lichteblau)
1207 * bug fix: Defining a generic function with a :METHOD-CLASS being a
1208 subclass of STANDARD-METHOD no longer causes stack exhaustion.
1209 (thanks to Gerd Moellmann)
1210 * fixed bug 246: increased compilation speed of long
1211 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
1213 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
1215 * DEFCONSTANT now throws a condition of type
1216 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
1217 constant to a non-EQL value; CONTINUE and ABORT restarts
1218 respectively change and preserve the value.
1219 * fixed bug 63: The code walker, part of the implementation of CLOS,
1220 is now better at handling symbol macros.
1221 * bug fix: There is no longer an internal implementation type named
1222 CL:LENGTH. (reported by Raymond Toy)
1223 * bug fix: In macro-like defining macros/special operators the
1224 implicit block does not enclose the lambda list.
1225 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
1226 enclosed in parentheses) are not suitable as type specifiers, and
1227 their use properly signals an error now.
1228 * bug fix: An argument count mismatch for a type specifier in code
1229 being compiled no longer causes an unhandled error at compile
1230 time, but signals a compile-time warning.
1231 * fixed simple vector readable printing
1232 * bug fix: DESCRIBE takes more care over whether the class
1233 precedence list slot of a class is bound before accessing it.
1234 (reported by Markus Krummenacker)
1235 * bug fix: FORMATTER can successfully compile pretty-printer format
1236 strings which use variants of the ~* directive inside.
1237 * bug fix: SEARCH now applies its TEST predicate to the elements of
1238 the arguments in the correct order. (thanks to Wolfhard Buss)
1239 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
1240 in type inference. (thanks to Robert E. Brown)
1241 * bug fix: Reading in symbols with an explicit package name of ""
1242 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
1243 * fixed some bugs revealed by Paul Dietz' test suite:
1244 ** NIL is now allowed as a structure slot name.
1245 ** Arbitrary numbers, not just REALs, are allowed in certain
1246 circumstances in LOOP for-as-arithmetic clauses.
1247 ** Multiple class redefinitions before slot access no longer
1248 causes a type error.
1249 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
1250 association between the name and a class.
1251 ** Generic functions with non-standard method-combination and over
1252 five methods all of which return constants no longer return NIL
1253 after the first few invocations. (thanks to Gerd Moellmann)
1254 ** CALL-NEXT-METHOD with no arguments now passes the original
1255 values of the arguments, even in the presence of assignment.
1256 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
1258 ** DISASSEMBLE works with closures and funcallable instances.
1259 ** ADD-METHOD now returns the generic function, not the new method.
1260 ** FIND-METHOD signals an error if the lengths of the specializers
1261 is incompatible with the generic function, even if the ERRORP
1263 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
1264 which its argument is a member.
1265 ** DEFCLASS only redefines the class named by its class-name
1266 argument if that name is the proper name of the class;
1267 otherwise, it creates a new class.
1268 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
1269 of the UNBOUND-SLOT condition to the name of the slot.
1270 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
1271 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
1272 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
1273 SLOT-MAKUNBOUND in the specified fashion.
1275 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
1276 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
1277 cross-compilation host. As a consequence, we can now bootstrap our
1278 way up to SBCL starting with a bare gcc toolchain and human-readable
1279 source code (first the source to CLISP, then the source to SBCL).
1280 * A contributed module containing a partial implementation of the
1281 simple-streams interface has been included. (thanks to Rudi
1283 * A contributed module implementing the RFC1321 Message Digest
1284 Algorithm, known as MD5, has been included.
1285 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1286 no longer has any effect, as the code controlled by this feature
1287 has been deleted. (As far as we know, no-one has ever built using
1288 this feature, and its semantics were confused in any case).
1289 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
1290 work on conditions (as required by the ANSI specification),
1291 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
1292 expected behaviour on conditions. Users should note, however,
1293 that such behaviour is not required by the ANSI specification,
1294 and so use of this behaviour may render their code unportable.
1295 * fixed some bugs revealed by Paul Dietz' test suite:
1296 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
1298 ** &ENVIRONMENT parameter in macro lambda list is bound first.
1299 ** SXHASH on condition objects no longer returns NIL.
1300 ** :ALLOCATION :CLASS slots are better treated; their values are
1301 updated on class redefinition, and initforms inherited from
1302 superclasses are applied.
1303 ** REMOVE-METHOD returns its generic function argument even when
1304 no method was removed.
1305 ** SHARED-INITIALIZE now initializes the values of the requested
1306 slots, including those with :ALLOCATION :CLASS.
1307 ** ALLOCATE-INSTANCE now works on structure classes defined via
1308 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
1310 ** SLOT-EXISTS-P now works on conditions, as well as structures
1312 ** MAKE-LOAD-FORM now has the required methods on
1313 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
1314 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
1315 keyword, and now implements the SLOT-NAMES argument.
1316 ** methods with &OPTIONAL arguments no longer allow too many
1317 arguments to be passed in the call without error.
1318 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
1319 option is consistent with the required arguments of the generic
1320 function lambda list.
1321 * bug fix: REQUIRE accepts a string designator. (Thanks to
1323 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
1324 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
1325 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
1326 * bug fix: The compiler now checks for duplicated variables in macro
1328 * bug fix: SETQ on globals returns the correct value.
1329 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
1330 not a COMPILER-ERROR (followed by some other strange error on
1331 choosing the CONTINUE restart).
1332 * bug fix: make.sh and friends are now more consistent in the way that
1333 they look for GNU "make".
1335 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
1336 * experimental native threads support (on x86 Linux >=2.4 only).
1337 This is not compiled in by default: you need to add :SB-THREAD to
1338 the target features. See the "Beyond ANSI" chapter of the manual
1340 * fix for longstanding nonANSIism: The old distinction between
1341 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
1342 The return value from CL:FIND-CLASS is now a CLOS class, and
1343 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
1344 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
1345 * An interface to the MetaObject Protocol, as described in Kiczales,
1346 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
1347 MIT Press, 1991, is available from the SB-MOP package.
1348 * incompatible change: the SB-PCL package should now be considered
1349 a private implementation detail, and no longer a semi-private MOP
1351 * minor incompatible change: due to rearrangement for threads, the
1352 control stack and binding stack are now allocated at arbitrary
1353 addresses instead of being hardcoded per-port. Users affected by
1354 this probably have to be doing advanced things with shared
1355 libraries, and will know who they are.
1356 * minor incompatible change: Previously, all --eval forms used were
1357 processed with READ before any of them were processed with EVAL.
1358 Now each --eval form is processed with both READ and EVAL before
1359 the next --eval form is processed. (Thus package operations like
1360 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
1361 work as the user might reasonably expect.)
1362 * minor incompatible change: *STANDARD-INPUT* is now only an
1363 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
1365 * minor incompatible change: Y-OR-N-P is now character-oriented,
1366 not line oriented. Also, YES-OR-NO-P now works without errors.
1367 (thanks to Antonio Martinez)
1368 * sb-aclrepl module improvements: an integrated inspector, added
1369 repl features, and a bug fix to :trace command.
1370 * Known functions, which cannot be open coded by the backend, are
1371 considered to be able to check types of their arguments. (fixing
1372 a bug report by Nathan J. Froyd)
1373 * fixed a bug in computing method discriminating functions: It is
1374 now possible to define methods specialized on classes which have
1375 forward-referenced superclasses. (thanks to Gerd Moellmann)
1376 * fixed evaluation order in optional entries (reported by Gilbert
1378 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
1379 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
1380 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
1381 required-by-AMOP NAME argument, as well as CLASS and
1382 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
1383 * fixed bug 20: DEFMETHOD can define methods using names that are
1384 not the proper names of classes to designate class specializers.
1385 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
1386 Unix file descriptors, instead of blowing up. (thanks to Antonio
1388 * Garbage collection refactoring: user-visible change is that a
1389 call to the GC function during WITHOUT-GCING will not do garbage
1390 collection until the end of the WITHOUT-GCING. If you were doing
1391 this you were probably losing anyway.
1392 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
1393 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
1394 TYPEP the latter but not the former.
1395 * The compiler issues a full WARNING for calls to undefined functions
1396 with names from the CL package.
1397 * MAP-INTO for a vector destination is open coded. (reported by
1398 Brian Downing on c.l.l)
1399 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
1400 documentation string.
1401 * fixed some bugs revealed by Paul Dietz' test suite:
1402 ** COPY-ALIST now signals an error if its argument is a dotted
1404 ** Condition slots are now accessed more correctly in the presence
1405 of multiple initargs for a given slot.
1406 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
1407 exclude restarts of the same name associated with a different
1409 ** DEFCLASS of forward-referenced classes with another
1410 forward-referenced class in the superclasses list no longer
1412 ** Condition slots are now initialized once each, not multiple
1413 times. (thanks to Gerd Moellmann)
1414 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
1416 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
1417 ** NSET-EXCLUSIVE-OR does not return extra elements when its
1418 arguments contain duplicated elements.
1419 ** RESTART-CASE understands local macros.
1420 ** RESTART-CASE associates exactly its own restarts with a condition.
1421 ** ENDP in safe mode checks its argument to be of type LIST.
1422 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
1423 in question is unbound.
1424 ** Optimized MAKE-INSTANCE functions no longer cause internal
1425 assertion failures in the presence of duplicate initargs.
1426 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
1427 ** Side-effectful :DEFAULT-INITARGS have their side-effects
1428 propagated even in the ctor optimized implementation of
1430 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
1432 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
1433 * a better implementation of SXHASH on (simple) bit vectors,
1434 measured both in execution speed and in distribution of results
1435 over the positive fixnums, has been installed. Likewise, a better
1436 implementation of EQUAL for simple bit vectors is now available.
1437 * fixed CEILING optimization for a divisor of form 2^k.
1438 * fixed bug 240 (emitting extra style warnings "using the lexical
1439 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
1440 by Antonio Martinez)
1441 * fixed SXHASH, giving different results for NIL depending on type
1442 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
1443 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
1444 variable. (found by Rolf Wester)
1445 * SBCL does not ignore type declarations for special
1446 variables. (reported by rif on c.l.l 2003-03-05)
1447 * some bug fixes in contrib/sb-aclrepl/
1448 * fixed some bugs revealed by Paul Dietz' test suite:
1449 ** a bug in the CONS type specifier, whereby the CAR and CDR
1450 types got intertwined, has been fixed;
1451 ** the type system is now able to reason about the interaction
1452 between INTEGER and RATIO types more completely;
1453 ** APPEND, [N]REVERSE and NRECONC check that those their
1454 arguments, which must be proper lists, are really so;
1455 ** An array specialized to be unable to hold elements has been
1456 implemented, as required -- yes, really -- by ANSI;
1457 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
1458 on malformed property lists;
1460 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
1461 * incompatible packaging change: in line with Unix convention,
1462 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
1463 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
1464 * REQUIRE and PROVIDE are now optionally capable of doing something
1465 useful. See the documentation string for REQUIRE.
1466 * infrastructure for a managed SBCL contrib system: contributed
1467 modules in this release include:
1468 ** the ASDF system definition facility;
1469 ** an interface to the BSD Sockets API;
1470 ** an ACL-like convenience interface to the repl;
1471 (thanks to Kevin Rosenberg)
1472 ** an implementation of ROTATE-BYTE, with efficient implementation
1474 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
1475 gives a closer approximation to the right answer than previously.
1476 (thanks to Raymond Toy)
1477 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
1478 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
1479 optional environment arguments, as required by ANSI.
1480 * fixed bugs in other functions taking environment objects, allowing
1481 calls with an explicit NIL environment argument to be compiled
1483 * fixed bug 228: primary return values from
1484 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
1485 COMPILE or FUNCTION.
1486 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
1487 :TYPE will no longer signal errors on innocuous objects.
1488 * fixed bug 231b: SETQ is better at respecting type declarations in
1489 the lexical environment.
1490 * fixed a bug in DEFCLASS: classes named by symbols with no or
1491 unprintable packages can now be defined.
1492 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
1493 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
1494 * fixed compiler failure related to checking types of functions.
1495 (reported by Robert E. Brown)
1496 * the compiler is now much more consistent in its error-checking
1497 treatment of bounding index arguments to sequence functions: in
1498 (SAFETY 3) code, errors will be signalled in almost all cases if
1499 invalid sequence bounding indices are passed to functions defined
1500 by ANSI to operate on sequences.
1501 * fixed a bug in the build procedure: documentation of SBCL-specific
1502 packages is now preserved and available in the final Lisp image.
1503 * lifted FDEFINITION lookup out of loops in the implementation of
1504 many list operations. (thanks to Robert E. Brown)
1505 * fixed a bug in the reader: the #n# reader macro now works for
1506 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
1507 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
1508 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
1509 E. Brown and Tony Martinez respectively)
1510 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
1511 SLOT-BOUNDP: in particular, it is now able to optimize them much
1512 better, and is now not vulnerable to having packages renamed.
1513 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
1514 always called when a slot is not present in an instance. (thanks
1516 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
1517 longer signal an error on unreading a character following EOF on
1518 the previous constituent stream. (thanks to Tony Martinez)
1519 * fixed some bugs revealed by Paul Dietz' test suite:
1520 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
1521 not just nonnegative fixnums;
1522 ** the logical bit-array operators such as BIT-AND now accept an
1523 explicit NIL for their "opt-arg" argument (to indicate a
1524 freshly-consed result bit-array);
1525 ** ELT now signals an error on an invalid sequence index in safe
1527 ** the type system is now cleverer about negations of numeric
1528 types, and consequently understands the BIGNUM and RATIO types
1530 ** the type system is now cleverer about the interaction between
1531 INTEGER and RATIO types: while bugs still remain, many more
1532 cases are accurately computed;
1533 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
1534 if it is in the last clause;
1535 ** CONSTANTLY now correctly returns a side-effect-free function in
1537 ** DECLARE is no longer treated as a special-operator; in
1538 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
1539 * incremented fasl file version number due to the change in the
1540 DEFSTRUCT-SLOT-DESCRIPTION structure.
1542 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
1543 * minor incompatible change: code processed by the "interpreter" or
1544 EVAL now has a compilation optimization policy of (DEBUG 2)
1545 (changed from (DEBUG 1)) to improve debuggability of interactive
1546 development, and to allow the use of the debug RETURN command in
1548 * an experimental implementation of the RETURN command for the
1549 debugger has been included. (thanks to Frederik Kuivinen)
1550 * fixed bug 62: constraints were not propagated into a loop.
1551 * fixed bug in embedded calls of SORT (reported and investigated by
1553 * fixed some bugs revealed by Paul Dietz' test suite:
1554 ** printing and reading of arrays with some dimensions having
1555 length 0 (thanks to Gerd Moellmann);
1556 ** BOA constructor with &AUX argument without a default value does
1557 not cause a type error;
1558 ** CONSTANTP now returns true for all self-evaluating objects.
1560 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
1561 * fixed bug 127: DEFSTRUCT now does not clobber old structure
1562 accessors that are related by inheritance, as specified in the
1563 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
1564 Valtteri Vuorikoski)
1565 * The compiler is now able to inline functions that were defined in
1566 a complex lexical environment (e.g. inside a MACROLET).
1567 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
1569 * Support for the upcoming FreeBSD-5.0 release has been included.
1570 (thanks to Dag-Erling Smorgrav)
1571 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
1572 effect when it is not in a toplevel context.
1573 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
1574 stand a better chance of being correct. (thanks to Gerd
1576 * fixed bug in COERCE, which now signals an error on coercing a
1577 rational to a bounded real type which excludes the expected
1579 * The compiler is now able to derive types more accurately from the
1580 COERCE and COMPILE functions.
1581 * fixed bug 223: functional binding is considered to be constant
1582 only for symbols in the CL package.
1583 * fixed bug 231: SETQ did not check the type of a variable being set
1584 (reported by Robert E. Brown)
1585 * A new optimization for MAKE-INSTANCE has been included, fixing
1586 various bugs (including relating to :ALLOCATION :CLASS slots and
1587 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
1589 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
1590 ** As required by ANSI, LOOP now disallows anonymous collection
1591 clauses such as COLLECT I in conjunction with aggregate boolean
1592 clauses such as THEREIS (= I 1);
1593 ** LOOP now signals an error when any variable is reused in the
1594 same loop (including the potentially useful construct analogous
1595 to WITH A = 1 WITH A = (1+ A);
1596 ** IT is only a special loop symbol within the first clause of a
1597 conditional loop clause;
1598 ** LOOP with a typed iteration variable over a hashtable now
1599 signals a type error iff it should.
1600 * fixed some other bugs revealed by Paul Dietz' test suite:
1601 ** FILE-STREAM now names the class previously known as FD-STREAM;
1602 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
1603 argument) no longer signals an error;
1604 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
1605 of the slot symbol, rather than using the current package
1606 ((:CONC-NAME "") continues to intern the slot's name in the
1608 * incremented fasl file version number, because of the incompatible
1609 change to the DEFSTRUCT-DESCRIPTION structure, and again because
1610 of the new implementation of DEFINE-COMPILER-MACRO.
1612 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
1613 * Support for building SBCL for MIPS platforms running in
1614 little-endian mode has now been checked in, and basic
1615 functionality on said platforms verified.
1616 * minor incompatible change: PCL now records the pathname of a file
1617 in which methods and the like are defined, rather than its
1619 * minor incompatible change: TRUENAME now considers the truename of
1620 a file naming a directory to be the pathname with :DIRECTORY
1621 component indicating that directory.
1622 * minor incompatible change: a NAMED clause in the extended form of
1623 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
1624 reason for the previous behaviour is unclear.
1625 * more systematization and improvement of CLOS and MOP conformance
1626 in PCL (thanks to Gerd Moellman and Pierre Mai):
1627 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
1629 ** DEFINE-METHOD-COMBINATION no longer signals an error for
1630 primary methods with no specializers;
1631 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
1633 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
1634 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
1635 FORWARD-REFERENCED-CLASSes; error reporting on
1636 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
1638 ** SXHASH on CLOS instances now uses a slot internal to the
1639 instance to return different numbers on distinct instances,
1640 while preserving the same return value through invocations of
1642 ** DEFMETHOD signals errors when methods with longer incongruent
1643 lambda lists are added to generic functions;
1644 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
1645 CLASS, as specified in AMOP;
1646 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
1647 on the order returned by the primary method for classes of
1648 class STANDARD-CLASS;
1649 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
1650 * fixed some bugs shown by Paul Dietz' test suite:
1651 ** DOLIST puts its body in TAGBODY;
1652 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
1654 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
1655 value producing form;
1656 ** if more variables are given to PROGV than values, extra
1657 variables are bound and made to have no value;
1658 ** NSUBSTITUTE on list arguments gets the right answer with
1660 ** ELT signals an error of type TYPE-ERROR when the index argument
1661 is not a valid sequence index;
1662 ** LOOP signals (at macroexpansion time) an error of type
1663 PROGRAM-ERROR when duplicate variable names are found;
1664 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
1665 ** FUNCALL of special-operators now cause an error of type
1667 ** PSETQ now works as required in the presence of side-effecting
1668 symbol-macro places;
1669 ** NCONC accepts any object as its last argument;
1670 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
1672 ** loop-for-as-package does not require a package to be explicitely
1674 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
1676 * fixed bug 166: compiler preserves "there is a way to go"
1677 invariant when deleting code.
1678 * fixed bug 172: macro lambda lists with required arguments after
1679 &REST arguments now cause an error to be signalled. (thanks to
1681 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
1682 bug. (thanks to Matthew Danish)
1683 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
1685 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
1686 arguments are lexically rebound. (thanks to Gerd Moellmann and
1688 * fixed bug 194: error messages are now more informative when there
1689 is no primary method applicable in a call to a generic
1690 function. (thanks to Gerd Moellmann)
1691 * fixed bug in command line argument checking (thanks to Julian
1693 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
1694 (thanks to Matthew Danish)
1695 * incremented fasl file version number, because of the
1696 SXHASH-related changes in the layout of CLOS data structures
1698 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
1699 * minor incompatible change: The runtime (the Unix executable named
1700 "sbcl") is now much pickier about the .core files it will load.
1701 Essentially it now requires .core files to descend from the same
1702 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
1703 as the runtime does. (The intent is to prevent the crashes which
1704 can occur, and which can even be reported as mysterious failures,
1705 when people patch the sources or change the build parameters
1706 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
1707 sbcl and .core files.)
1708 * fixed bug: VALUES-LIST is no longer optimized away.
1709 * fixed bug 142: The FFI conversion of C string values to Lisp
1710 string values no longer conses excessively. (thanks to Nathan
1711 Froyd porting Raymond Toy's fix to CMU CL)
1712 * began to systematize and improve MOP conformance in PCL (thanks to
1713 Nathan Froyd, Gerd Moellman and Pierre Mai):
1714 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
1716 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
1717 ** FINALIZE-INHERITANCE is now called on class finalization;
1718 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
1719 argument precedence order.
1720 * fixed bug 202: The compiler no longer fails on functions whose
1721 derived types contradict their declared type.
1722 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
1723 so it can be non-toplevel.
1724 * The fasl file version number has changed (because of the new
1725 implementation of DEFMACRO).
1726 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
1727 safe code, that any length requirement by their type-specifier
1728 argument is valid. The exceptions to this are described in bug
1730 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
1731 functions now check the types of their inputs as required by ANSI.
1732 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
1733 introduced symbol is DECLAREd to be SPECIAL.
1734 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
1735 * fixed bug: :COUNT argument to sequence functions may be negative
1736 * fixed bug: body of DO-SYMBOLS may contain declarations
1737 * fixed bug: PUSHNEW now evaluates its arguments from left to right
1738 (reported by Paul F. Dietz, fixed by Gerd Moellman)
1739 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
1740 symbol macro only once
1741 * fixed printing of call frame when argument list is unavailable
1742 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
1743 * compiler no longer signals WARNING on unknown keyword
1746 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
1747 * A beta-quality port to the mips architecture running Linux,
1748 based on the old CMUCL backend, has been made. It has been tested
1749 on a big-endian kernel, and works sufficiently well to be able to
1750 rebuild itself; it has not been tested in little-endian mode.
1751 * fixed an inconsistency between gencgc.c and purify.c which made
1752 dumping/loading .core files unreliable
1753 * fixed bug 120a: The compiler now deals correctly with IFs where
1754 the consequent is the same as the alternative, instead of
1755 misderiving the return type. (thanks to Alexey Dejneka)
1756 * fixed bug 113: Logical pathnames are now dumpable (the logical
1757 host is resolved at load-time, throwing an error if it is not
1759 * fixed bug 174: FORMAT's error message is slightly clearer when a
1760 non-printing character is used in a format directive.
1761 * fixed several bugs in compiler checking of type declarations, i.e.
1762 violations of the Python "declarations are assertions" principle
1763 (thanks to Alexey Dejneka)
1764 * fixed several bugs in PCL's error checking (thanks to Gerd
1766 * fixed bug: printing of FILE-ERROR (thanks to Antonio
1768 * fixed bug in compilation of functions as first class values
1769 (thanks to Antonio Martinez-Shotton)
1770 * The compiler's handling TYPE-ERRORs which it can prove will
1771 inevitably happen at runtime has been cleaned up and corrected
1772 in several ways. (thanks to Alexey Dejneka)
1773 * improved argument type checking for various basic arithmetic
1774 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
1775 lavished on them in the past that they can be compiled in many
1776 ways in different special cases
1777 * fixed bug 181: compiler checks validity of user supplied type
1779 * cleaned up code flushing in optimization: Function calls which
1780 should signal errors for safety purposes (e.g. which ANSI says
1781 should signal errors when their arguments are of incorrect type)
1782 are no longer optimized away.
1783 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
1784 * incremented fasl file version number, because changes in the
1785 implementation of sequence functions like COERCE caused
1786 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
1787 in old inline expansions) to become undefined. (Actually these
1788 changes were later undone, so we might very well be binary
1789 compatible with 0.7.7 after all, but leaving the version number
1790 incremented seemed like the simplest and most conservative
1793 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
1794 * An alpha-quality port to the parisc architecture running Linux,
1795 based on the old CMUCL backend, has been made. This, even more so
1796 than the other backends, should be considered still a work in
1797 progress; known problems include that the Linux kernel in 64-bit
1798 mode does not propagate the correct sigcontext structure to
1799 userspace, and consequently SBCL on a parisc64 kernel will not
1801 * fixed bug 189: The compiler now respects NOTINLINE declarations for
1802 functions declared in FLET and LABELS. (I.e. "LET conversion" is
1803 suppressed.) Also now that the compiler is looking at declarations
1804 in the environment, it checks optimization declarations as well,
1805 and suppresses inlining when (> DEBUG SPEED).
1806 * More fixes have been made to treatment of floating point exception
1807 treatment and other Unix signals. In particular, floating point
1808 exceptions no longer cause Bus errors on the SPARC/Linux platform.
1809 * The detection and handling of control stack exhaustion (infinite
1810 or very deeply nested recursion) has changed. Stack exhaustion
1811 detection is now done by write-protecting pages at the OS level
1812 and applies at all optimization settings; when found, a
1813 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
1814 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
1815 be caught using IGNORE-ERRORS.
1816 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
1817 correctly when transforming recursive LABELS functions to LETs.
1818 (thanks to Alexey Dejneka)
1819 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
1820 that are names of constants or global variables.
1821 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
1822 alien routines with docstrings.
1823 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
1824 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
1826 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
1827 (thanks to Eric Marsden)
1828 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
1829 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
1830 * Bug fix: The SPARC backend can now compile functions involving
1831 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
1832 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
1833 to a functions expecting a PATHNAME-DESIGNATOR.
1834 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
1835 lambda lists. (thanks to Alexey Dejneka)
1836 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
1837 functions so that EXPORTing the name of the class doesn't cause
1838 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
1839 to Antonio Martinez for reporting this)
1840 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
1841 constant-folded without failing an assertion. (thanks to Einar
1842 Floystad Dorum for reporting this)
1843 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
1844 types are now dealt with more correctly by the compiler.
1845 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
1846 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
1847 behaviour analogous to RENAME-FILE. This puts its behaviour more
1848 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
1850 * The fasl file version number has changed again. (because of the
1851 bug fix involving the names of PCL MAKE-INSTANCE functions)
1853 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
1854 * bug fix: Floating point exceptions are treated much more
1855 consistently on the x86/Linux and PPC/Linux platforms.
1856 * Array initialization with :INITIAL-ELEMENT is now much faster for
1857 cases when the compiler cannot open code the array creation, but
1858 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
1859 array accesses have also seen a speed increase.
1860 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
1861 specified. (This was at the root of some bad interactions between
1862 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
1864 * bug fix: Internal error arguments for undefined functions are now
1865 computed correctly on the PPC/Linux platform.
1866 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
1867 Raymond Toy's patch for CMU CL)
1868 * Support for the Solaris 9 operating environment has been included
1869 (thanks to Daniel Merritt)
1870 * A very ugly but hopefully complete draft of the missing FFI chapter
1871 of the manual has been created by reformatting the corresponding
1872 CMU CL manual chapter into (currently very ugly and incoherent)
1873 DocBook and bringing it up to date for SBCL behavior. Thus, the
1874 manual is now essentially complete, at least by my extreme
1875 once-and-only-once standards, whereby it's acceptable to refer to
1876 the doc strings of SB-EXT functions as the primary documentation.
1877 * The fasl file version number has changed again, due to cleanup of
1878 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
1879 is no longer a static symbol.)
1881 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
1882 * SBCL now builds with OpenMCL (version 0.12) as the
1883 cross-compilation host; also, more progress has been made toward
1884 bootstrapping under CLISP.
1885 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
1887 * bug 158 fixed: The compiler can now deal with integer loop
1888 increments different from 1; fixing this turned out also to fix
1890 * bug 169 fixed: no more bogus warnings about using lexical bindings
1891 despite the presence of perfectly good SPECIAL declarations (thanks
1892 to David Lichteblau)
1893 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
1894 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
1895 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
1897 * bug 180 fixed: Method combination specifications no longer ignore
1898 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
1899 * bug fix: Structure type predicate functions now check their argument
1900 count as they should.
1901 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
1902 correctly. (thanks to Pierre Mai)
1903 * minor incompatible change: The --noprogrammer option is deprecated
1904 in favor of the new --disable-debugger option, which is very similar.
1905 (The major difference is that it takes effect at a slightly different
1906 time at startup, causing handling of errors in --sysinit and
1907 --userinit files will be affected differently.) The
1908 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
1909 been added to allow this functionality to be controlled from ordinary
1910 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
1911 maintainers, who might want to run non-interactive scripts to
1912 build SBCL cores which will later be used interactively.)
1913 * minor incompatible change: The LOAD function no longer, when given
1914 a wild pathname to load, loads all files matching that pathname.
1915 Instead, an error of type FILE-ERROR is signalled.
1917 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
1918 * bug 147 fixed: The compiler preserves its block link/count
1919 invariants more correctly now so that it doesn't crash. (thanks
1921 * Dynamic loading of object files in OpenBSD is now supported. (thanks
1923 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
1924 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
1925 no-value-for-this-character as NIL (as specified by ANSI).
1926 * HOST-NAMESTRING on physical pathnames now returns a string that is
1927 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
1928 (thanks to Christophe Rhodes)
1929 * The Alpha port handles icache flushing more correctly. (thanks to
1931 * More progress has been made toward bootstrapping under CLISP. (thanks
1932 to Christophe Rhodes)
1933 * The fasl file format has changed again, because dynamic loading
1934 on OpenBSD (which has non-ELF object files) motivated some cleanups
1935 in the way that foreign symbols are transformed and passed around.
1936 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
1937 is no longer treated as whitespace by the reader, but instead as
1938 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
1939 |A
\7fB|, instead of A as it used to.
1941 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
1942 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
1943 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
1944 * SBCL now runs on the PPC archtiecture under Linux. It actually did
1945 this as of 0.7.1.45, but was left out of the previous news section
1946 (thanks to Dan Barlow)
1947 * SBCL now runs on the Solaris operating system on SPARC architectures
1948 (thanks to Christophe Rhodes's port of the CMUCL runtime)
1949 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
1950 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
1951 * SPARC backend cleanups, allowing builds of cores optimized for V8
1952 and V9 SPARCS, and also emission of code targeted to a particular
1953 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
1955 * SBCL is closer to bootstrapping under CLISP, thanks to various
1956 fixes by Christophe Rhodes.
1957 * The fasl file format has changed again, to allow the compiler's
1958 INFO database to support symbol macros.
1959 * The user manual (in doc/) is formatted into HTML more nicely.
1960 (thanks to coreythomas)
1961 * The system is smarter about SUBTYPEP relationships, especially
1962 those involving NOT types (including types such as ATOM which are
1963 represented internally using NOT types). Thus SUBTYPEP is less
1964 likely to return (VALUES NIL NIL) in general, and in particular
1965 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
1967 * The fasl file format has changed again, because the internal
1968 representation of types now includes a new slot to support the new
1969 SUBTYPEP-of-NOT-types logic.
1970 * (not a change in the main branch of SBCL, but a related prototype
1971 which can hopefully be merged into the main branch of SBCL in the
1972 future:) Brian Spilsbury has produced a Unicode-enabled variant of
1973 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
1974 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
1975 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
1976 dispatch macro character combinations. (thanks to Alexey Dejneka)
1977 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
1978 that superficially look like logical namestrings correctly.
1979 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
1981 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
1982 default supplied-p) for &optional and &key arguments. (thanks to
1985 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
1986 * incompatible change: The compiler is now less aggressive about
1987 tail call optimization, doing it only when (> SPACE DEBUG) or
1988 (> SPEED DEBUG). (This is an incompatible change because there are
1989 programs which relied on the old CMU-CL-style behavior to optimize
1990 away their unbounded recursion which will now die of stack overflow.)
1991 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
1992 for non-GENCGC systems has been increased to 20M (since that
1993 seems much closer to the likely performance optimum for modern
1994 systems than the old 4M value was)
1995 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
1996 and *DEBUG-PRINT-LEVEL*
1997 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
1998 of CMU CL's support for SPARC, and various endianness and other
1999 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2000 * new syntactic sugar for the Unix command line: --load foo.bar is now
2001 an alternate notation for --eval '(load "foo.bar")'.
2003 ** The system now detects stack overflow and handles it gracefully,
2004 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2005 optimization settings. (This is a good thing in general, and
2006 its introduction in this version should be particularly timely
2007 for anyone whose code fails because of suppression of tail
2009 ** The system now hunts for the C variable "environ" in a more
2010 devious way, to avoid segfaults when the C library version differs
2011 between compile time and run time. (thanks to Christophe Rhodes)
2012 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2013 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2014 ** The compiler no longer issues bogus style warnings for undefined
2015 classes in the same source file as the DEFCLASSes which defined
2016 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2018 ** fixes in CONDITION class precedence list for undefined function
2019 errors (thanks to Alexei Dejneka)
2020 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2021 correctly. (thanks to Dan Barlow)
2022 ** portability fixes aiming at bootstrapping under CLISP (thanks
2023 to Dave McDonald and Christophe Rhodes)
2024 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2025 ** fixes in type translation and and type inference (thanks to
2027 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2028 ** various fixes in the new ports (thanks to Dan Barlow)
2029 * several changes related to debugging:
2030 ** suppression of tail recursion, as noted above
2031 ** stack overflow detection, as noted above
2032 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2033 is now the default. (For some time encapsulation has been more
2034 reliable than the breakpoint-based :ENCAPSULATE NIL
2035 implementation, at least on X86 systems; and I just noticed that
2036 encapsulation also seems closer to the spirit of the ANSI
2039 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
2041 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
2042 up properly again. (There was a packaging bug in 0.7.0 which
2043 left their definitions in SB-SYS::LOAD-FOREIGN and
2044 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
2045 vital for most things which interface to C-level interfaces,
2046 like extensions working with sockets or databases or
2047 Perl-compatible regexes or whatever, and the need to fix
2048 this bug is the main reason that 0.7.1 was released so
2050 ** DEFGENERIC is now choosier about the methods it redefines, so that
2051 reLOADing a previously-LOADed file containing DEFGENERICs does
2052 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
2053 cycle now works as it should. (thanks to Alexey Dejneka)
2054 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
2055 fixed by Christophe Rhodes. (He actually submitted this patch
2056 months ago, and I delayed until after 0.7.0.)
2057 ** Bug 111 (internal compiler confusion about runtime checks on
2058 FUNCTION types) was fixed by Alexey Dejneka.
2059 * Some internal cleanups (getting rid of variables which aren't
2060 needed now that the byte interpreter is gone) caused the fasl
2061 file format number to change again.
2063 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
2064 * major incompatible change: The default fasl file extension, i.e. the
2065 default extension for files produced by COMPILE-FILE, has changed
2066 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
2068 ** There are many changes in the implementation of the compiler.
2069 SBCL is now essentially a compiler-only implementation of ANSI
2070 Common Lisp. EVAL still "interprets" a few special cases, but
2071 almost all the interesting cases are handled by creating
2072 a LAMBDA expression, calling COMPILE on it, then calling
2073 FUNCALL on the result.
2074 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
2075 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
2076 Since the code is newer, there might still be some new bugs
2077 (though not as many as before Martin Atzmueller's fixes:-). But
2078 the new code is substantially simpler and clearer, and hopefully
2079 any remaining bugs will be simpler, less fundamental, and more
2080 fixable then the bugs in the old code.
2081 ** The revised compiler is still a little unsteady on its feet.
2083 *** The debugging information it produces (particularly the names
2084 of FUNCTION objects) is sometimes much less useful than what
2085 the old compiler produced.
2086 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
2087 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
2088 within a MACROLET) has been temporarily weakened.
2089 ** There are new compiler optimizations for various functions:
2090 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
2091 FIND-IF-NOT, POSITION-IF-NOT, and FILL
2092 *** the math functions TRUNCATE, FLOOR, and CEILING
2093 *** the function-of-all-trades COERCE
2094 Mostly these should be transparent, but there's one
2095 potentially-annoying problem (bug 117): when the compiler
2096 inline-expands a function and does type analysis on the result,
2097 it can create control paths which have type mismatches, and
2098 when it can't prove that those control paths aren't taken,
2099 it will issue WARNINGs about the type mismatches. This is
2100 a particular problem in practice for the new sequence functions.
2101 It's not clear how this should be fixed, and for now, a
2102 workaround is given in the entry for 117 in the BUGS file.
2103 ** (Because of the interaction between the two previous items --
2104 occasional inlining problems and new inline expansions -- some
2105 of the new sequence function optimizations won't really kick in
2106 completely until debugging information, and then inlining, are
2107 straightened out in some future version.)
2108 * minor incompatible changes:
2109 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
2110 DIRECTORY no longer implicitly promotes NIL slots of its
2111 pathname argument to :WILD. In particular, when you ask for the
2112 contents of a directory (which you used to be able to do without
2113 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
2114 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
2115 ** changes in behavior that ANSI explicitly defines to be
2116 implementation dependent:
2117 *** The new compiler-only implementation still conforms with ANSI,
2118 but acts a little different than before. Besides the obvious
2119 changes in performance tradeoffs (that the cost per form passed
2120 to EVAL has gone up, and the cost per form executed by EVAL
2121 has gone down), the behavior of the system changes a little
2122 because there are no longer any interpreted function objects.
2123 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
2124 e.g. doing COMPILE on the output of interactive DEFUN is
2126 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
2128 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
2129 has changed from (:CL) to NIL.
2130 *** The CHAR-NAME of unprintable ASCII characters which, unlike
2131 e.g. #\Newline and #\Tab, don't have names specified in the
2132 ANSI Common Lisp standard, is now based on their ASCII symbolic
2133 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
2134 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
2135 are no longer used for output.
2136 ** changes in internal implementation constants:
2137 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
2138 4 million. (If your application spends a lot of time GCing and
2139 you have a lot of RAM, you might want to experiment with
2140 increasing it even more.)
2141 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
2142 However, almost all old code should still continue to work without
2143 immediate update, as SB-C-CALL is now a (deprecated) nickname
2145 ** Old operator names in the style DEF-FOO are now deprecated in
2146 favor of new corresponding names DEFINE-FOO, for consistency with
2147 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
2148 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
2149 internal symbols, but a few supported extensions like
2150 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
2151 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
2152 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
2153 etc. as you get deeper into recursive calls to the debugger
2154 command loop, instead of the old "5]", "5]]", "5]]]"
2155 sequence. (I was motivated to do this when squabbles between
2156 ILISP and SBCL left me very deeply nested in the debugger. In the
2157 short term, this change will probably provoke more ILISP/SBCL
2158 squabbles, but hopefully it will be an improvement in the long run.)
2159 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
2160 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
2161 function, since declaiming return types involving aliens is
2162 (1) annoyingly messy to do by hand and (2) vital to efficient
2163 compilation of code which calls such functions.
2164 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
2165 longer reexported by the SB-EXT package. They're solely useful
2166 for alien code, so it seems more logical that you should get
2167 them from the SB-ALIEN package, not in SB-EXT.
2168 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
2169 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
2170 features. Instead, the code that they used to control is always
2171 built into the system.
2172 * many other bug fixes
2173 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
2174 advantage of the new EVAL-WHEN stuff and to clean them up in
2175 general, and they are now more ANSI-compliant in a number of
2176 ways. Martin Atzmueller is responsible for a lot of this.
2177 ** Besides the cleanups discussed above, Martin Atzmueller fixed
2179 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
2180 *** correct ERROR type for various file operations
2181 *** some fixes for Lisp streams
2182 *** DEFMETHOD syntax checking
2183 *** changing old weird representation of debug information as
2184 strings (which, among their other deficiencies, don't transform
2185 correctly when you rename packages, and don't change their
2186 print representation when you change things like *PACKAGE*
2187 and *PRINT-LENGTH*) to symbols and lists of symbols
2188 He also made several improvements and fixed several bugs in DESCRIBE.
2189 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
2191 *** misbehavior of WRITE-STRING/WRITE-LINE
2192 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
2193 and several other LOOP problems as well
2194 *** DIRECTORY when similar filenames are present
2195 *** DEFGENERIC with :METHOD options
2196 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
2197 *** bug in the optimization of ARRAY-ELEMENT-TYPE
2198 *** argument ordering in FIND with :TEST option
2199 *** mishandled package designator argument in APROPOS-LIST
2200 *** various problems in the backquote readmacro
2201 *** a bug in APROPOS
2202 *** probably some others that I'm not describing very well here,
2203 since the CVS log documents them by reference to sbcl-devel
2204 messages, and the SourceForge archives aren't working well.:-(
2205 ** Dan Barlow improved the Alpha port (and is making progress on the
2206 PPC port, for those of you who think different).
2207 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
2208 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
2209 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
2210 continues to work on the SPARC port (for those of you in a position
2211 to look down upon our little PC-compatible boxes from a great height).
2212 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
2213 and uses that copy, rather than the current dynamic value, when
2214 it's trying to decide whether to truncate output. Thus e.g.
2215 (let ((*print-lines* 50))
2216 (pprint-logical-block (stream nil)
2218 (let ((*print-lines* 8))
2219 (print (aref possiblybigthings i) stream)))))
2220 should now truncate the logical block only at 50 lines, instead of
2221 often truncating it at 8 lines, as it did before.
2222 * The doc/cmucl/ directory, containing old CMU CL documentation
2223 from the time of the fork, is no longer part of the base system.
2224 SourceForge has shut down its anonymous FTP service, and with it
2225 my original plan for distributing the old CMU CL documentation
2226 there. For now, if you need these files you can download an old
2227 SBCL source release and extract them from it.
2228 * The fasl file version number changed again, for dozens of reasons,
2229 some of which are apparent above.
2231 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
2232 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
2233 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
2234 patch, so that DISASSEMBLE output is much nicer.
2235 * The code in the SB-PROFILE package now seems reasonably stable.
2236 I still haven't decided what the final interface should look like
2237 (I'd like PROFILE to interact cleanly with TRACE, since both
2238 facilities use function encapsulation) but if you have a need
2239 for profiling now, you can probably use it successfully with
2240 the current CMU-CL-style interface.
2241 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
2242 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
2243 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
2244 link now returns the dangling link itself, and for similar
2245 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
2246 link itself. (In these cases the old code signalled an error and
2247 looped endlessly, respectively.) Thus, DIRECTORY now works even
2248 in the presence of dangling and cyclic symbolic links.
2249 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
2250 is now a supported extension again, since the consensus on
2251 sbcl-devel was that it can be useful for ordinary development
2252 work, not just for debugging SBCL itself.
2253 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
2254 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
2255 that currently-defined functions might be redefined later with
2256 different return types.
2257 * Hash tables can be printed readably, as inspired by CMU CL code
2258 of Eric Marsden and SBCL code of Martin Atzmueller.
2259 * better error handling in CLOS method combination, thanks to
2260 Martin Atzmueller porting Pierre Mai's CMU CL patches
2261 * more overflow fixes for >16Mbyte I/O buffers
2262 * A bug in READ has been fixed, so that now a single Ctrl-D
2263 character suffices to cause end-of-file on character streams.
2264 In particular, now you only need one Ctrl-D at the command
2265 line (not two) to exit SBCL.
2266 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
2268 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
2269 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
2270 does the right thing.
2271 * The implementation of some type tests, especially for CONDITION
2272 types, is now tidier and maybe faster, due to CMU CL code
2273 originally by Douglas Crosher, ported by Martin Atzmueller.
2274 * Some math functions have been fixed, and there are new
2275 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
2276 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
2277 * (There are also some new optimizers in contrib/*-extras.lisp. Those
2278 aren't built into sbcl-0.6.13, but are a sneak preview of what's
2279 likely to be built into sbcl-0.7.0.)
2280 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2281 CL, ported to SBCL by Martin Atzmueller)
2282 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2283 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2284 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2285 * There's a new slam.sh hack to shorten the edit/compile/debug
2286 cycle for low-level changes to SBCL itself, and a new
2287 :SB-AFTER-XC-CORE target feature to control the generation of
2288 the after-xc.core file needed by slam.sh.
2289 * minor incompatible change: The ENTRY-POINTS &KEY argument to
2290 COMPILE-FILE is no longer supported, so that now every function
2291 gets an entry point, so that block compilation looks a little
2292 more like the plain vanilla ANSI section 3.2.2.3 scheme.
2293 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
2294 returns the number of bytes consed since the system started,
2295 rather than the number consed since the first time the function
2296 was called. (The new definition parallels ANSI functions like
2297 CL:GET-INTERNAL-RUN-TIME.)
2298 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
2299 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
2300 supported. Now DIRECTORY always does the abstract Common-Lisp-y
2301 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
2302 * Fasl file version numbers are now independent of the target CPU,
2303 since historically most system changes which required version
2304 number changes have affected all CPUs equally. Similarly,
2305 the byte fasl file version is now equal to the ordinary
2308 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
2309 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
2310 is no longer recognized. I apologize for this, because it was
2311 listed in SB-EXT as a supported extension, but I found that
2312 its existing behavior was poorly specified, as well as incorrectly
2313 specified, and it looked like too much of a mess to straighten it
2314 out. I have enough on my hands trying to get ANSI stuff to work..
2315 * many patches ported from CMU CL by Martin Atzmueller, with
2316 half a dozen bug fixes in pretty-printing and the debugger, and
2317 half a dozen others elsewhere
2318 * fixed bug 13: Floating point infinities are now supported again.
2319 They might still be a little bit flaky, but thanks to bug reports
2320 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
2321 as flaky as they were.
2322 * The --noprogrammer command line option is now supported. (Its
2323 behavior is slightly different in detail from what the old man
2324 page claimed it would do, but it's still appropriate under the
2325 same circumstances that the man page talks about.)
2326 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
2327 are now supported, and enabled by default. Thus, the compiler can
2328 handle many floating point and complex operations much less
2329 inefficiently. (Thus e.g. you can implement a complex FFT
2331 * The compiler now detects type mismatches between DECLAIM FTYPE
2332 and DEFUN better, and implements CHECK-TYPE more correctly, and
2333 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
2334 thanks to patches from Martin Atzmueller.
2335 * various fixes to make the cross-compiler more portable to
2336 ANSI-conforming-but-different cross-compilation hosts (notably
2337 Lispworks for Windows, following bug reports from Arthur Lemmens)
2338 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
2339 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
2340 fixed thanks to Pierre Mai's CMU CL patches.
2341 * fixes to keep the system from overflowing internal counters when
2342 it tries to use i/o buffers larger than 16M bytes
2343 * fixed bug 45a: Various internal functions required to support
2344 complex special functions have been merged from CMU CL sources.
2345 (When I was first setting up SBCL, I misunderstood a compile-time
2346 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
2347 * improved support for type intersection and union, fixing bug 12
2348 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
2349 more obscure bugs as well
2350 * some steps toward byte-compiling non-performance-critical
2351 parts of the system, courtesy of patches from Martin Atzmueller
2352 * Christophe Rhodes has made some debian packages of sbcl at
2353 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
2354 From his sbcl-devel e-mail of 2001-04-08 they're not completely
2355 stable, but are nonetheless usable. When he's ready, I'd be happy
2356 to add them to the SourceForge "File Releases" section. (And if
2357 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
2358 * new fasl file format version number (because of changes in
2359 internal representation of (OR ..) types to accommodate the new
2360 support for (AND ..) types, among other things)
2362 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
2363 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
2365 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
2367 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
2368 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
2369 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
2370 * DESCRIBE now works on structure objects again.
2371 * Most function call argument type mismatches are now handled as
2372 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
2373 know whether the function will be redefined before the call is
2374 executed. (The compiler could flag local calls with full WARNINGs,
2375 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
2376 it doesn't keep track of enough information to know whether calls
2377 are local in this sense.)
2378 * Compiler output is now more verbose, with messages truncated
2379 later than before. (There should be some supported way for users
2380 to override the default verbosity, but I haven't decided how to
2381 provide it yet, so this behavior is still controlled by the internal
2382 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
2383 src/compiler/ir1util.lisp.)
2384 * Fasl file format version numbers have increased again, because
2385 support for the Gray streams extension changes the layout of the
2386 system's STREAM objects.
2387 * The Gray subclassable streams extension now works, thanks to a
2388 patch from Martin Atzmueller.
2389 * The full LOAD-FOREIGN extension (not just the primitive
2390 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
2391 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
2392 but like most other programs, it defaults to copying the Unix
2393 environment from the original process instead of starting the
2394 new process in an empty environment.
2395 * Extensions which manipulate the Unix environment now support
2396 an :ENVIRONMENT keyword option which doesn't smash case or
2397 do other bad things. The CMU-CL-style :ENV option is retained
2398 for porting convenience.
2399 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
2400 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
2402 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
2404 * A patch from Martin Atzmueller seems to have solved the SIGINT
2405 problem, and as far as we know, signal-handling now works cleanly.
2406 (If you find any new bugs, please report them!)
2407 * The system no longer defaults Lisp source file names to types
2408 ".l", ".cl", or ".lsp", but only to ".lisp".
2409 * The compiler no longer uses special default file extensions for
2410 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
2411 seems to expect a single default extension for all compiled code,
2412 and there's no compelling reason to try to stretch the standard
2413 to allow two different extensions.) Instead, byte-compiled files
2414 default to the same extension as native-compiled files.
2415 * Fasl file format version numbers have increased again, because
2416 a rearrangement of internal implementation packages made some
2417 dumped symbols in old fasl files unreadable in new cores.
2418 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
2419 many fewer weird special cases.
2420 * Bug #17 (differing COMPILE-FILE behavior between logical and
2421 physical pathnames) has been fixed, and some related misbehavior too,
2422 thanks to a patch from Martin Atzmueller.
2423 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
2424 by Tim Moore, ported to SBCL by Martin Atzmueller.
2425 * Martin Atzmueller fixed several filesystem-related problems,
2426 including bug #36, in part by porting CMU CL patches, which were
2427 written in part by Paul Werkowski.
2428 * More compiler warnings in src/runtime/ are gone, thanks to
2429 more patches from Martin Atzmueller.
2430 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
2433 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
2435 * DESCRIBE now works on CONDITION objects.
2436 * The debugger now handles errors which arise when trying to print
2437 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
2439 * The build system now uses an additional file, customize-target-features.lisp,
2440 to allow local modifications to the target *FEATURES* list. (The point of
2441 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
2442 debugging features enabled, without having to worry about propagating it
2443 into everyone's system when I do a "cvs update".) When no
2444 customize-target-features.lisp file exists, the target *FEATURES* list
2445 should be constructed the same way as before.
2446 * fixed bugs in DEFCONSTANT ANSI-compatibility:
2447 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
2448 warn about behavior which is undefined under the ANSI spec. Note: This
2449 is specified by ANSI, but it's not very popular with programmers.
2450 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
2451 macro in the SBCL sources for an example of a workaround which you
2452 might use to make portable ANSI-standard code which does what you want.
2453 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
2454 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
2455 when it's used as a non-toplevel form. (This is required in order
2456 to implement the DEFCONSTANT-EQX macro.)
2457 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
2458 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
2459 funny things, due to bugs in the implementation of EVAL-WHEN
2460 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
2461 non-toplevel DEFCONSTANTs are uncommon.)
2462 * The core file version number and fasl file version number have been
2463 incremented, because the old noncompliant DEFCONSTANT behavior involved
2464 calling functions which no longer exist, and because I also took the
2465 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
2466 * fixed bug 1 (error handling before read-eval-print loop starts), and
2467 redid debugger restarts and related debugger commands somewhat while
2469 ** The QUIT debugger command is gone, since it did something
2470 rather different than the SB-EXT:QUIT command, and since it never
2471 worked properly outside the main toplevel read/eval/print loop.
2472 Invoking the new TOPLEVEL restart provides the same functionality.
2473 ** The GO debugger command is also gone, since you can just invoke
2474 the CONTINUE restart directly instead.
2475 ** The TOP debugger command is also gone, since it's redundant with the
2476 FRAME 0 command, and since it interfered with abbreviations for the
2478 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
2480 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
2481 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
2482 some porting work by Martin Atzmueller)
2483 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
2484 with a boatload of patches which he ported to SBCL. Now that those
2486 ** The system tries to make sure that its low-priority messages
2487 are prefixed by semicolons, to help people who like to use
2488 syntax highlighting in their ILISP buffer. (This patch
2489 was originally due to Raymond Toy.)
2490 ** The system now optimizes INTEGER-LENGTH better, thanks to more
2491 patches originally written by Raymond Toy.
2492 ** The compiler understands coercion between single-value and
2493 multiple-VALUES type expressions better, getting rid of some very
2494 weird behavior, thanks to patches originally by Robert MacLachlan
2495 and Douglas Crosher.
2496 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
2497 lambda lists, thanks to a patch originally by Pierre Mai.
2498 ** The system no longer bogusly warns about "abbreviated type
2500 ** The compiler gets less confused by inlining and RETURN-FROM,
2501 thanks to some patches originally by Tim Moore.
2502 ** The system no longer hangs when dumping circular lists to fasl
2503 files, thanks to a patch originally from Douglas Crosher.
2504 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
2505 undefined function error.
2506 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
2507 in structure slot initforms) for now, documented workaround instead:-|
2508 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
2509 * fixed bug 5: added stubs for various Gray stream functions called
2510 in the not-a-CL:STREAM case, so that even when Gray streams aren't
2511 installed, at least appropriate type errors are generated
2512 * fixed bug 8: better reporting of various PROGRAM-ERRORs
2513 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
2514 consistently in DEFMETHOD forms.
2515 * removed bug 21 from BUGS, since Martin Atzmueller points out that
2516 it doesn't seem to affect SBCL after all
2517 * The C runtime system now builds with better optimization and many
2518 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
2520 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
2522 * The system is now under CVS at SourceForge (instead of the
2523 CVS repository on my home machine).
2524 * The new signal handling code has been tweaked to treat register
2525 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
2526 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
2527 downstream, e.g. in debug-int.lisp, has implicit dependencies
2528 on the unsignedness of integer representation of machine words,
2529 and that caused the system to bomb out with infinite regress
2530 when trying to recover from type errors involving signed values,
2531 e.g. (BUTLAST '(1 2 3) -1).)
2532 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
2533 (This was one of the bugs Peter Van Eynde reported back in July.)
2534 * The system now uses code inspired by Colin Walters' O(N)
2535 implementation of MAP (from the cmucl-imp@cons.org mailing
2536 list, 2 September 2000) when it can't use a DEFTRANSFORM to
2537 inline the MAP operation, and there is more than one
2538 sequence argument to the MAP call (so that it can't just
2539 do ETYPECASE once and for all based on the type of the
2540 single sequence argument). (The old non-inline implementation
2541 of the general M-argument sequence-of-length-N case required
2542 O(M*N*N) time when any of the sequence arguments were LISTs.)
2543 * The QUIT :UNIX-CODE keyword argument has been renamed to
2544 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
2545 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
2547 * Raymond Wiker's patches to port dynamic loading from Linux to
2548 FreeBSD have been added.
2549 * The BUGS file is now more nearly up to date, thanks in large part
2550 to Martin Atzmueller's review of it.
2551 * The debugger now flushes standard output streams before it begins
2552 its output ("debugger invoked" and so forth).
2553 * The core version number and fasl file version number have both
2554 been incremented, because of incompatible changes in the layout
2556 * FINISH-OUTPUT is now called more consistently on QUIT. (It
2557 used to not be called for a saved Lisp image.)
2558 * Martin Atzmueller's version of a patch to fix a compiler crash,
2559 as posted on sbcl-devel 13 September 2000, has been installed.
2560 * Instead of installing Martin Atzmueller's patch for the
2561 compiler transform for SUBSEQ, I deleted the compiler transform,
2562 and transforms for some similar consing operations.
2563 * A bug in signal handling which kept TRACE from working on OpenBSD
2565 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
2566 away by constant folding
2567 * The system now defines its address space constants in one place
2568 (in the Lisp sources), and propagates them automatically elsewhere
2569 (through GENESIS and the sbcl.h file). Therefore, patching the
2570 address map is less unnecessarily tedious and error-prone. The
2571 Lisp names of address space constants have also been systematized.
2572 * CVS tags like dollar-Header-dollar have been removed from
2573 the sources, because they have never saved me trouble and
2574 they've been source of trouble working with patches and other
2575 diff-related operations.
2576 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
2577 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
2579 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
2581 * The system has been ported to OpenBSD.
2582 * The system now compiles with a simple "sh make.sh" on the systems
2583 that it's supported on. I.e., now you no longer need to tweak
2584 text in the target-features.lisp-expr and symlinks in src/runtime/
2585 by hand, the make.sh takes care of it for you.
2586 * The system is no longer so grossly inefficient when compiling code
2587 involving vectors implemented as general (not simple) vectors (VECTOR T),
2588 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
2589 which dares to use the various sequence functions on non-simple
2590 vectors, takes less of a performance hit.
2591 * There is now a primitive type predicate VECTOR-T-P
2592 to test for the (VECTOR T) type, so that e.g.
2593 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
2594 can now be compiled with some semblance of efficiency. (The old code
2595 turned the type declaration into a full call to %TYPEP at runtime!)
2596 * AREF on (VECTOR T) is still not fast, since it's still compiled
2597 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
2598 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
2599 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
2600 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
2601 without making full calls to SUBTYPEP at runtime.
2602 (Some analogous efficiency issues for non-simple vectors specialized to
2603 element types other than T, or for non-simple multidimensional arrays,
2604 have not been addressed. They could almost certainly be handled the
2605 same way if anyone is motivated to do so.)
2606 * The changes in array handling break binary compatibility, so
2607 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
2608 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
2609 instead of (VALUES T T).
2610 * By following the instructions that Dan Barlow posted to sbcl-devel
2611 on 2 July 2000, I was able to enable primitive dynamic object
2612 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
2613 functionality is not implemented (since it calls ld to resolve
2614 library references automatically, requiring RUN-PROGRAM for its
2615 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
2616 try to resolve library references) is now supported.
2617 * The system now flushes the standard output streams when it terminates,
2618 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
2619 them at several other probably-convenient times, e.g. in each pass of
2620 the toplevel read-eval-print loop, and after evaluating a form given
2621 as an "--eval" command-line option. (These changes were motivated by a
2622 discussion of stream flushing issues on cmucl-imp in August 2000.)
2623 * The source transform for TYPEP of array types no longer assumes
2624 that an array whose element type is a not-yet-defined type
2625 is implemented as an array of T, but instead punts, so that the
2626 type will be interpreted at runtime.
2627 * There is now some support for cross-compiling in make.sh: each of
2628 the phases of make.sh has its own script. (This should be transparent
2629 to people doing ordinary, non-cross-compile builds.)
2630 * Since my laptop doesn't have hundreds of megabytes of memory like
2631 my desktop machine, I became more motivated to do some items on
2632 my to-do list in order to reduce the size of the system a little:
2633 ** Arrange for various needed-only-at-cold-init things to be
2634 uninterned after cold init. To support this, those things have
2635 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
2636 symbols with such names are now uninterned after cold init).
2637 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
2638 fasl files for cold load.
2639 ** Remove the old compiler structure pooling code (which used to
2640 be conditional on the target feature :SB-ALLOC) completely.
2641 ** Redo the representation of some data in cold init to be more compact.
2642 (I also looked into supporting byte compiled code at bootstrap time,
2643 which would probably reduce the size of the system a lot, but that
2644 looked too complicated, so I punted for now.)
2645 * The maximum signal nesting depth in the src/runtime/ support code has
2646 been reduced from 4096 to 256. (I don't know any reason for the very
2647 large old value. If the new smaller value turns out to break something,
2648 I'll probably just bump it back up.)
2649 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
2651 * Many, many bugs reported by Peter Van Eynde have been added to
2652 the BUGS list; some have even been fixed.
2653 * While enabling dynamic object file loading, I tried to make the
2654 code easier to understand, renaming various functions and variables
2655 with less ambiguous names, and changing some function calling
2656 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
2657 * While trying to figure out how to do the OpenBSD port, I tried to
2658 clean up some of the code in src/runtime/. In particular, I dropped
2659 support for non-POSIX signal handling, added various comments,
2660 tweaked the code to reduce the number of compilation warnings, and
2661 renamed some files to increase consistency.
2662 * To support the new automatic configuration functionality in make.sh,
2663 the source file target-features.lisp-expr has been replaced with the
2664 source file base-target-features.lisp-expr and the machine-generated
2665 file local-target-features.lisp-expr.
2666 * fixed a stupid quoting error in make.sh so that using CMU CL
2667 "lisp -batch" as cross-compilation host works again
2669 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
2671 * DESCRIBE no longer tries to call itself recursively to describe
2672 bound/fbound values, so that it no longer fails on symbols which are
2673 bound to themselves (like keywords, T, and NIL).
2674 * DESCRIBE now works on generic functions.
2675 * The printer now prints less-screwed-up representations of closures
2676 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
2677 * A private symbol is used instead of the :EMPTY keyword previously
2678 used to mark empty slots in hash tables. Thus
2679 (DEFVAR *HT* (MAKE-HASH-TABLE))
2680 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
2681 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
2682 now does what ANSI says that it should. (You can still get
2683 similar noncompliant behavior if bang on the hash table
2684 implementation with all the symbols you get back from
2685 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
2686 This breaks binary compatibility, since tests for equality to
2687 :EMPTY are wired into things like the macroexpansion of
2688 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
2690 * There's now a minimal placeholder implementation for CL:STEP,
2691 as required by ANSI.
2692 * An obscure bug in the interaction of the normal compiler, the byte
2693 compiler, inlining, and structure predicates has been patched
2694 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
2695 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
2697 * Missing ordinary arguments in a macro call are now detected even
2698 when the macro lambda list contains &KEY or &REST.
2699 * The debugger no longer complains about encountering the top of the
2700 stack when you type "FRAME 0" to explicitly instruct it to go to
2701 the top of the stack. And it now prints the frame you request even
2702 if it's the current frame (instead of saying "You are here.").
2703 * As specified by ANSI, the system now always prints keywords
2704 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
2706 * The default initial SIZE of HASH-TABLEs is now smaller.
2707 * Type information from CLOS class dispatch is now propagated
2708 into DEFMETHOD bodies, so that e.g.
2709 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2711 is now basically equivalent to
2712 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2713 (DECLARE (TYPE SINGLE-FLOAT X))
2715 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
2716 operation, without having to do run-time type dispatch.
2717 * The macroexpansion of DEFMETHOD has been tweaked so that it has
2718 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
2719 * Since I don't seem to be making big file reorganizations very often
2720 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
2721 is overflowing my ability to conveniently back them up), I've finally
2722 checked the system into CVS. (The CVS repository is on my home system,
2723 not at SourceForge -- putting it on SourceForge might come later.)
2724 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
2725 high-level GC-NOTIFY-FOO functions send their output. (There's
2726 still very little control of where low-level verbose GC functions
2727 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
2728 less than it used to -- the GC-NOTIFY-FOO functions are now under
2729 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
2730 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
2731 in only one place in the source code, and propagates it automatically
2732 everywhere that it's needed. Thus e.g. when I bump the version from
2733 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
2734 * The C source files now include boilerplate legalese and documentation
2735 at the head of each file (just as the Lisp source files already did).
2736 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
2737 to his page will be replaced with a link to his new CLiki service.
2739 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
2741 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
2742 * The build process now looks for GNU make under the default name "gmake",
2743 instead of "make" as it used to. If GNU make is not available as "gmake"
2744 on your system, you can change this default behavior by setting the
2745 GNUMAKE environment variable.
2746 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
2747 can build without error under CMU CL.
2749 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
2751 * There is now a partial SBCL user manual (with some new text and some
2752 text cribbed from the CMU CL manual).
2753 * The beginnings of a profiler have been added (starting with the
2754 CMU CL profiler and simplifying and cleaning up). Eventually the
2755 main interface should be through the TRACE macro, but for now,
2756 it's still accessed through vaguely CMU-CL-style functions and macros
2757 exported from the package SB-PROFILE.
2758 * Some problems left over from porting CMU CL to the new
2759 cross-compilation bootstrap process have been cleaned up:
2760 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
2761 instead of SB!XC:DEFMACRO, compounded by an oversight on my
2762 part when getting rid of the compiler *BACKEND* stuff.)
2763 ** The value of *NULL-TYPE* was screwed up, because it was
2764 being initialized before the type system knew the final
2765 definition of the 'NULL type. This screwed up several key
2766 optimizations in the compiler, causing inefficiency in all sorts
2767 of places. (I found it because I wanted to understand why
2768 GET-INTERNAL-RUN-TIME was consing.)
2769 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
2770 PROCLAIM FTYPE information. Unfortunately this broke binary
2771 compatibility again, since now the forms output by DEFGENERIC
2772 to refer to functions which didn't exist in 0.6.3.
2773 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
2774 can use the new (as of 0.6.3) transform for SOME into MAP into
2776 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
2777 values to (INTEGER 0 1000000), so that the time code will no longer
2778 occasionally get blown up by Linux returning 1000000 microseconds
2779 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
2780 its output conform to the ANSI spec. (Alas, this makes its output
2781 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
2782 * A full call to MAP NIL with a single sequence argument no longer conses.
2783 * fixes to problems pointed out by Martin Atzmueller:
2784 * The manual page no longer talks about multiprocessing as though
2785 it were currently supported.
2786 * The ILISP support patches have been removed from the distribution,
2787 because as of version 5.10.1, ILISP now supports SBCL without us
2788 having to maintain patches.
2789 * added a modified version of Raymond Toy's recent CMU CL patch for
2790 EQUALP comparison of HASH-TABLE
2792 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
2794 * The system still can't cross-compile itself with
2795 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
2796 entails), but at least it can compile more of itself that way
2797 than it used to be able to, and various buglets which were uncovered
2798 by trying to cross-compile itself that way have now been fixed.
2799 * This release breaks binary compatibility again. This time
2800 at least I've incremented the FASL file format version to 2, so that the
2801 problem can be detected reliably instead of just causing weird errors.
2802 * various new style warnings:
2803 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
2804 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
2805 ** using the lexical binding of a variable named in the *FOO* style
2806 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
2807 as specified by ANSI.
2808 * *RANDOM-STATE* is no longer automatically initialized from
2809 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
2810 default behavior of the system is to repeat its behavior every time
2811 it's run. If you'd like to change this behavior, you can always
2812 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
2813 old convention there was no comparably easy way to get the system to
2814 repeat its behavior every time it was run.
2815 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
2816 FTYPE declarations has been removed, in favor of their ANSI
2817 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
2818 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
2819 the types of their sequence arguments can be determined at compile time.
2820 This is done through a new open code expansion for MAP which eliminates
2821 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
2822 argument types can be determined at compile time.
2823 * The optimizer now transforms COERCE into an identity operation when it
2824 can prove that the coerced object is already of the correct type. (This
2825 can be a win for machine generated code, including the output of other
2826 optimization transforms, such as the MAP transform above.)
2827 * Credit information has been moved from source file headers into CREDITS.
2828 * Source file headers have been made more standard.
2829 * The CASE macro now compiles without complaining even when it has
2832 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
2834 * (Note that the way that the PCL macroexpansions were rewritten
2835 to accommodate the change in DEFGENERIC below breaks binary
2836 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
2837 not run under sbcl-0.6.2. Once we get out of alpha releases,
2838 i.e. hit release 1.0.0, we'll probably try to maintain binary
2839 compatibility between maintenance releases, e.g. between sbcl-1.4.3
2840 and sbcl-1.4.4. Until then, however, it might be fairly common
2841 for maintenance releases to break binary compatibility.)
2842 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
2844 * The reporting of unhandled signals has been changed to print some
2845 explanatory text as well as the report form. (Previously only
2846 the report form was printed.)
2847 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
2848 it defines, so that the compiler no longer issues undefined function
2849 warnings for compiled-but-not-yet-loaded generic functions.
2850 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
2851 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
2852 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
2853 section of the ANSI spec are supported.
2854 * The "" nickname for the "KEYWORD" package has been removed.
2855 The reader still handles symbol tokens which begin with a package marker
2856 as keywords, but it doesn't expose its mechanism for doing so in the
2857 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
2858 * The system now issues STYLE-WARNINGs for contradictory TYPE
2859 proclamations. (Warnings for contradictory FTYPE proclamations would
2860 be nice too, but those can't be done usefully unless the type system
2861 is made smarter about FUNCTION types.)
2862 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
2863 systematized, so that "*target-*.lisp is supposed to exist only on the
2864 target and imply that there's a related file which exists on the
2865 host, and *host-*.lisp is supposed to exist only on the host and imply
2866 that there's a related file which exists on the target. This involves a
2867 lot of renaming. Hopefully the acute confusion caused by the renaming
2868 will be justified by the reduction in chronic confusion..
2869 ** runtime-type.lisp -> early-target-type.lisp
2870 ** target-type.lisp -> late-target-type.lisp
2871 ** early-host-format.lisp -> early-format.lisp
2872 ** late-host-format.lisp -> late-format.lisp
2873 ** host-error.lisp -> misc-error.lisp
2874 ** early-error.lisp -> early-target-error.lisp
2875 ** late-error.lisp -> late-target-error.lisp
2876 ** host-defboot.lisp -> early-defboot.lisp
2877 ** code/misc.lisp -> code/target-misc.lisp
2878 ** code/host-misc.lisp -> code/misc.lisp
2879 ** code/numbers.lisp -> code/target-numbers.lisp
2880 ** code/early-numbers.lisp -> numbers.lisp
2881 ** early-host-type.lisp -> early-type.lisp
2882 ** late-host-type.lisp -> late-type.lisp
2883 ** host-typep.lisp -> typep.lisp
2884 ** load.lisp -> target-load.lisp
2885 ** host-load.lisp -> load.lisp
2886 ** host-disassem.lisp -> disassem.lisp
2887 ** host-insts.lisp -> insts.lisp
2888 ** byte-comp.lisp -> target-byte-comp.lisp
2889 ** host-byte-comp.lisp -> byte-comp.lisp
2890 ** host-signal.lisp -> signal.lisp
2891 ** host-defstruct.lisp -> defstruct.lisp
2892 ** late-target-type.lisp -> deftypes-for-target.lisp
2893 Furthermore, several other previously target-only files foo.lisp (e.g.
2894 hash-table.lisp and random.lisp) have been split into a target-and-host
2895 foo.lisp file and a target-only target-foo.lisp file, with their key type
2896 definitions in the target-and-host part, so that the cross-compiler will
2897 know more about target types.
2898 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
2899 gone away. In their place are various *BACKEND-FOO* variables
2900 corresponding to the slots of the old structure.
2901 * A bug which caused the SB-COLD bootstrap-time package to be propagated
2902 into the target SBCL has been fixed.
2903 * The chill.lisp system for loading cold code into a running SBCL
2905 * Support for the CMU CL "scavenger hook" extension has been removed.
2906 (It was undocumented and unused in the CMU CL sources that SBCL was
2907 derived from, and stale in sbcl-0.6.1.)
2908 * Various errors in the cross-compiler type system were detected
2909 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
2910 (enabling various consistency checks). Many of them were fixed,
2911 but some hard problems remain, so the compiler is back to
2912 running without *TYPE-SYSTEM-INITIALIZED* for now.
2913 * As part of the cross-compiler type system cleanup, I implemented
2914 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
2915 * I have started adding UNCROSS calls throughout the type system
2916 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
2917 on cross-compiler input files will be able to go away, and various
2919 * CONSTANTP now returns true for quoted forms (as explicitly required
2922 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
2924 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
2925 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
2926 (MAKE-LIST -1). In the longer term, it ought to become true
2927 that declarations are assertions even at SAFETY 1. For now, it's not
2928 quite true even at SAFETY 3, but it's at least more nearly true..
2929 (Note that this change seems to increases the size of the system by
2930 O(5%) and to decrease the speed of the compiler by 20% or more.)
2931 * changed ALIEN printing to be much more abbreviated, as a short-term fix
2932 for the problem of printing dozens of lines of distracting information
2933 about low-level system machinery as part of the top stack frame
2934 on entry to the debugger when an undefined function was called.
2935 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
2936 is not reset to COMMON-LISP-USER.
2937 * Compilation of stuff related to dyncount.lisp has been made conditional
2938 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
2939 smaller. The various dyncount-related symbols have been moved into
2940 a new "SB-DYNCOUNT" package.
2941 * tty-inspect.lisp has been renamed to inspect.lisp.
2942 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
2943 feature has gone away. (When we eventually port to other flavors of
2944 libc and/or Unix, we'll try to make the differences between flavors
2945 invisible at the user level.)
2946 * Various other *FEATURES* tags, and/or their associated conditionals,
2947 have been removed if obsolescent, or given better documentation, or
2948 sometimes given more-mnemonic names.
2950 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
2952 * tidied up "make.sh" script
2953 * tidied up system directory structure
2954 * better "clean.sh" behavior
2955 * added doc/FOR-CMUCL-DEVELOPERS
2956 * many many small tweaks to output format, e.g. removing possibly-confusing
2957 trailing #\. character in DESCRIBE-INSTANCE
2958 * (EQUALP #\A 'A) no longer signals an error.
2959 * new hashing code, including EQUALP hashing
2960 * tidied up Lisp initialization and toplevel
2961 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
2962 * command line argument processing
2963 * added POSIX-GETENV function to deal with Unix-ish environment variables
2964 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
2965 terminating SBCL on EOF
2966 * non-verbose GC by default
2967 * There is no more "sbcl" shell script; the sbcl file is now the C
2968 runtime executable (just like CMU CL).
2969 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
2971 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
2972 symbol and package information as Lisp native symbol and package objects
2973 instead of strings naming symbols and strings naming packages. This way,
2974 whenever packages are renamed (as in warm init), debug information is
2975 transformed along with everything else.
2976 * tweaked the optimization policy declarations which control the building
2977 of SBCL itself. Now, among other things, the system no longer saves
2978 source location debugging information. (This helps two problems at once
2979 by reducing SBCL size and by keeping SBCL from trying to look for its
2980 sources -- which may not exist -- when reporting errors.)
2981 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
2982 debugging and testing purposes
2983 * cleaned up printing, making the printer call PRINT-OBJECT for
2984 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
2985 methods, giving nearly-ANSI behavior
2986 * converted almost all special variables to use *FOO* naming convention
2987 * deleted PARSE-TIME functionality, since it can be done portably
2988 * moved some files out of cold init into warm init
2989 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
2991 * regularized formatting of source files
2992 * added an install.sh script
2993 * fixed ridiculous memory usage of cross-compiler by making
2994 compiler/alloc.lisp not try to do pooling unless it can hook
2995 itself into the GC of the cross-compilation host. Now the system
2996 builds nicely on my old laptop.
2997 * added :SB-ALLOC in target-features.lisp-expr
2998 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
2999 was not implemented)
3000 * re-did condition handling and note reporting in the compiler. Notes
3001 are no longer handled by signalling conditions. Style warnings
3002 and warnings are handled more correctly and reported in such a way
3003 that it's easy to find one or the other in your output (so that you
3004 can e.g. figure out which of many problems caused COMPILE-FILE to
3006 * changed the severity of several compiler warnings from full WARNING
3007 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3008 compiler note reporting so that it doesn't use the condition system
3009 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3010 COMPILE-FILE command)
3011 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3012 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3013 no longer supported, since their implementation was deeply intertwingled
3014 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3015 * removed bogus "support" for compiler macros named (SETF FOO), and
3016 removed the compiler macro for SETF INFO (but only after making a fool
3017 of myself on the cmucl-imp mailing list by posting a bogus patch for
3018 DEFINE-COMPILER-MACRO..)
3019 * Compiled files containing forms which have side effects on the Lisp
3020 reader (such as DEFPACKAGE forms) are now handled more correctly.
3021 (Compiler queuing of top level lambdas has been suppressed by setting
3022 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3023 * deleted various currently-unused source files, e.g. gengc.lisp. They
3024 may be added back at some point e.g. when porting to other architectures,
3025 but until they are it's distracting to distribute them and to try to
3027 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3028 there were so many of them they're just distractions, and UNCROSS is
3029 known to be able to handle the current sources
3030 * moved PROFILE functionality into TRACE, so that it will be clear
3031 how the wrapping and unwrapping of functions when you profile them
3032 interacts with the wrapping and unwrapping of functions when you
3033 trace them. (Actually, the functionality isn't there yet, but at least
3034 the interface specification is there. Hopefully, the functionality will
3035 arrive with some future maintenance release.)
3036 * removed host-oops.lisp
3037 * changed signature of QUIT function to allow UNIX-CODE argument
3038 * fixed READ-SEQUENCE bug
3039 * tweaked verbose GC output so that it looks more like the progress
3040 output that ANSI specifies for functions like LOAD
3041 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
3042 * added <http://sbcl.sourceforge.com> to the banner information printed by