1 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2 * incompatible change: the top level REPL now has only an ABORT
3 restart associated with it, not TOPLEVEL and ABORT as it used to.
4 TOP and TOPLEVEL are now available as debugger commands for
5 returning to the top level.
6 * incompatible change: forms evaluated in the REPL now use the
7 global optimization policy.
8 * incompatible change: user- and system-initialization files are
9 no longer processed with LOAD, but by READ and EVAL; hence the
10 global optimization policy, startup package, readtable, etc,
12 * internal entry point details and argument counts no longer appear
13 in backtraces unless explicitly requested by setting
14 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
15 * built-in and standard functions no longer have names like "top
16 level local call to FOO".
17 * fixed bug 32: functions defined in non-null lexical environments
18 now have more legible printed representation
19 * fixed bug 33: functions defined in non-null lexical environemnts
20 are now more amenable to inspection by INSPECT.
21 * workaround for bug 354: XEPs no longer appear in backtraces unless
23 * fixed bug: receiving the signal which results from attempting to
24 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
25 SIGBUS on other *BSDs) on architectures where the C stack is also
26 the Lisp stack (x86 and x86-64) from foreign code no longer leads
27 to debugger confusion or wild instability. (reported by Cheuksan
29 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
30 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
31 (reported by Lutz Euler)
32 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
33 compiled code. (reported by Paul Dietz)
34 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
35 specialized parameter to a method to something that is not TYPEP
36 the specializer is now possible.
37 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
38 face of package deletion.
39 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
40 pathname. (reported by David Tolpin on c.l.l)
41 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
42 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
43 STRING-STREAM and FILE-STREAM, respectively.
44 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
45 than previously; in addition, its test suite is now run on build.
46 (thanks to Luke Gorrie)
47 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
48 * fixed some bugs revealed by Paul Dietz' test suite:
49 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
51 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
52 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
53 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
55 * fixed loading of multiply forward-referenced layouts.
56 (thanks to Cheuksan Wang)
57 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
58 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
59 (see COMPILE-FILE documentation for details of :PRINT option)
60 * fixed bugs 19 and 317: fixed-format floating point printing is
61 more accurate. This also fixes a bug reported by Adam Warner
62 related to the ~@F format directive.
63 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
65 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
66 dispatch table if the from-char is a dispatch macro character.
67 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
68 by the wordsize no longer ignore the last word. (reported by Lutz
70 * fixed bug in type checking of dynamic-extent variables. (reported
72 * optimization: sequence traversal functions use their freedom to
73 coerce function designators to functions.
74 * optimization: code with many calls to CLOS methods specialized on
75 CLOS classes has had redundant type checks removed.
76 * optimization: added declarations to speed up operations that access
77 the internal character database (for example STRING-UPCASE)
78 * optimization: comparison operations between floats and sufficiently small
79 fixnums no longer create extra rationals
80 * fixed some bugs related to Unicode integration:
81 ** portions of multibyte characters at the end of buffers for
82 character-based file input are correctly transferred to the
83 start of the buffer at the next read.
84 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
85 passing it through to OPEN.
86 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
87 argument given to internal calls to OPEN.
88 ** the built-in comment readers (introduced by character sequences
89 ";" and "#|") are more forgiving to encoding errors; they will
90 STYLE-WARN and then attempt to resync the stream at a character
91 boundary. (thanks to Teemu Kalvas)
92 * fixed some bugs in the x86-64 port:
93 ** Negative short int return values from c-calls are sign-extended
95 ** The stack is aligned to 16-bytes for c-calls, as required by
96 the ABI. (thanks to Cheuksan Wang)
97 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
98 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
99 for enums. (thanks to Vincent Arkesteijn)
100 ** Multiple small optimizations and bugfixes for floating point
102 * fixed some bugs revealed by Paul Dietz' test suite:
103 ** Space, Tab, Linefeed, Return and Page have the invalid
104 secondary constituent character trait.
105 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
107 ** WITH-INPUT-FROM-STRING should only update the index place on
109 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
111 ** Bit-array operations (BIT-AND and similar) worked incorrectly
112 with one-dimensional arrays with fill pointers.
113 ** TYPE-OF failed on a complex with an integer realpart and a
115 ** compiler failure during type inference for the code of form
116 (IF (EQL X (THE ...)) ...) (MISC.535).
118 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
119 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
120 platform. The port supports 61-bit fixnums, large memory spaces
121 and reloading shared object files.
122 * enhancement: saving cores with foreign code loaded is now
123 supported on ppc/Darwin in addition to the previously supported
125 * enhancement: the statistical profiler now walks deeper into the
126 call stack for more meaningful call-graphs and accrued time
127 reports (x86/x86-64 only). It also now reports time spent in
129 * enhancement: it is now possible to trace most individual methods
130 of a generic function in addition to tracing the generic function
132 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
134 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
135 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
136 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
137 produces an error. (thanks to Vincent Arkesteijn)
138 * bug fix: NAMESTRING on pathnames with :WILD components in their
139 directories works correctly. (thanks to Artem V. Andreev)
140 * fixed bug 125: compiler preserves identity of closures. (reported
142 * bug fixed: functions with &REST arguments sometimes failed with
143 "Undefined function" when compiled with (DEBUG 3). (reported by
145 * bug fix: overflow during compiling of setting element of a bit
146 vector with constant index and value. (reported by Timmy Douglas)
147 * build fix: fixed the dependence on *LOAD-PATHNAME* and
148 *COMPILE-FILE-PATHNAME* being absolute pathnames.
149 * on x86 compiler partially supports stack allocation of dynamic-extent
151 * GO and RETURN-FROM do not check the extent of their exit points
152 when compiled with SAFETY 0.
153 * fixed some bugs related to Unicode integration:
154 ** encoding and decoding errors are now much more robustly
155 handled; it should now be possible to recover even from invalid
156 input or output to the terminal. (thanks to Teemu Kalvas)
157 ** provided a first cut at implementing STRING-TO-OCTETS and
158 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
159 ** altered the SB-MD5 contributed module slightly, changing the
160 interface just enough for it to be supportable for builds where
161 lisp characters are not eight bits.
162 * fixed some bugs revealed by Paul Dietz' test suite:
163 ** the FORMATTER-generated functions for ~V[ conditionals require
164 the correct number of arguments.
165 ** READ-FROM-STRING returns the mandated second value when applied
166 to displaced strings.
167 ** the #\Rubout and #\Backspace characters are treated as invalid
168 constituent characters by the tokenizer.
170 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
171 * new feature: reloading changed shared object files with
172 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
173 * new feature: references to foreign variables and functions
174 can now be compiled and loaded before the corresponding shared
175 object file is loaded, as long as the foreign definitions are
176 available at runtime.
177 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
178 supported. (thanks to Dan Debertin)
179 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
180 just keywords. (thanks to Vincent Arkesteijn)
181 * fixed bug #331: structure-class instances corresponding to
182 DEFSTRUCT forms are now created eagerly.
183 * fixed bug #345: backtraces from calls to undefined functions work
184 on x86 as well. Related bug #61 is now also partially fixed on x86
185 (backtraces from throws to unknown catch tags.)
186 * bug fix: lambda-list parsing is now stricter vrt. order and number
187 of lambda-list keywords.
188 * bug fix: as specified by AMOP, an error is signalled if a
189 class-option appears multiple times in a DEFCLASS form. (reported
191 * bug fix: RANDOM can be compiled when the compiler derives the type
192 of its numeric argument as a disjoint set of small integers.
193 (reported by Paul Dietz)
194 * bug fix: starting a core saved with shared objects loaded when
195 those objects are not available no longer causes threaded SBCL to
196 hang. (reported by Sean Ross)
197 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
199 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
200 argument, which must always be NIL. (reported by Kalle Niemitalo)
201 * bug fix: printing 1.0d+23 no longer results in an error.
202 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
203 * bug fix: structure slot setters preserve evaluation order. (thanks
205 * fixed some bugs related to Unicode integration:
206 ** RUN-PROGRAM can allow its child to take input from a Lisp
207 stream. (reported by Stefan Scholl)
208 ** ASDF-INSTALL successfully downloads .tar.gz files in all
209 locales. (reported by Ken Causey)
210 * fixed some bugs revealed by Paul Dietz' test suite:
211 ** INCF, DECF and REMF evaluate their place form as specified in
213 ** FORMATTER expands ~{ ~} iteration directives with V or #
214 parameters correctly.
215 ** FORMATTER deals with the ~@[ ~] conditional directive where the
216 consequent uses no arguments correctly.
217 ** the system has a partial understanding of the (COMPLEX RATIO)
219 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
222 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
223 * new feature: a build-time option (controlled by the :SB-UNICODE
224 keyword feature, enabled by default) for building the system with
225 support for the entire 21-bit character space defined by the
227 * new feature: the system now has rudimentary external-format
228 support; the primary user-visible change at this time is that
229 characters with the high bit set (such as lower-case-e-acute) will
230 print correctly to a terminal in a UTF-8 environment.
231 * minor incompatible change: BASE-CHAR no longer names a class;
232 however, CHARACTER continues to do so, as required by ANSI.
233 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
234 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
235 has been moved to the SB-EXT package (temporarily re-exported from
237 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
238 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
240 * fixed bug #351: better error-handlind and reporting for malformed
242 * fixed bug #350: bignum-printing is now more memory-efficient,
243 allowing printing of very large bignums, eg. (expt 2 10000000).
244 (reported by Bruno Haible)
245 * fixed bug #302: better primitive-type selection for intersection
247 * fixed bug #308: non-graphic characters now all have names, as
248 required. (reported by Bruno Haible)
249 * bug fix: redefining a class with different superclasses now correctly
250 removes it from the direct-subclasses of its previous superclasses.
251 (reported by David Morse)
252 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
253 new value now works. (reported by Bruno Haible)
254 * bug fix: correct canonicalization of multiple non-standard slot
255 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
256 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
257 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
258 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
259 now exists, an signals an error.
260 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
261 during macroexpansion for non-iteration variables as well. (reported
262 by Bruno Haible for CMUCL)
263 * bug fix: Cyclic structures and unprintable objects in compiler
264 messages no longer cause errors. (reported by Bruno Haible)
265 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
266 and READ-FROM-STRING all now return a primary value of NIL if
267 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
268 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
269 (reported by Bruno Haible for CMUCL)
270 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
271 do not designate a condition. (reported by Bruno Haible for
273 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
274 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
275 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
276 permitting resolution in favour of any of the conflicting symbols.
277 (reported by Bruno Haible for CMUCL)
278 * bug fix: EQUAL compiler optimizations is less aggressive on
279 strings which can potentially compare true despite having distinct
280 specialized array element types.
281 * bug fix: unit enumerations can be defined without dividing by
282 zero. (thanks to Vincent Arkesteijn)
283 * FORMAT compile-time argument count checking has been enhanced.
284 (report from Bruno Haible for CMUCL)
285 * a partial workaround for the bug 262: the compiler does not try to
286 inline-expand a local function doing RETURN-FROM from a deleted
287 BLOCK. (thanks to Peter Denno for the bug report and to David
288 Wragg for the simple test case)
289 * fixed some bugs revealed by Paul Dietz' test suite:
290 ** RENAME-PACKAGE allows all package designators as new package
292 ** constraint propagation and lambda variable substitution are
293 more cautious in dealing with partially deleted code.
294 ** compiler sometimes lost reoptimization passes.
295 ** CERROR, given a condition as condition designator, passes its
296 remaining arguments to the continue format control without
298 ** Case-altering FORMAT directives work correctly on non-ASCII
300 ** The REAL type specifier handles bounds outside the floating
301 point ranges without signalling FLOATING-POINT-OVERFLOW.
302 ** Functions with IR1-transformations can create intercomponent
303 references to global functions.
304 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
306 ** FORMAT ~R treats a nil value for its first parameter correctly.
308 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
309 * enhancement: saving cores with foreign code loaded is now
310 supported on x86/NetBSD and sparc/Linux in addition to the previously
312 * bug fix: on some platforms repeated installations caused multiple
313 copies of HTML documentation to be installed -- should not happen
314 any more. (reported by Stefan Scholl)
315 * bug fix: parsing self-recursive alien record types multiple times
316 no longer causes infinite recursion. (reported by Thomas F. Burdick,
317 original patch by Helmut Eller for CMUCL)
318 * bug fix: stack-exhaustion detection works now on NetBSD as well.
319 (thanks to Richard Kreuter)
320 * bug fix: defining classes whose accessors are methods on existing
321 generic functions in other (locked) packages no longer signals
322 bogus package lock violations. (reported by François-René Rideau)
323 * bug fix: special variables as DEFMETHOD parameters no longer have
324 associated bogus type declarations. (reported by David Wragg and
326 * bug fix: read-write consistency on streams of element-type
327 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
328 * bug fix: redefiniton of the only method of a generic function with
329 no DEFGENERIC no longer emits a full WARNING. In addition,
330 redefinition of generic functions with no DEFGENERIC to an
331 incompatible lambda list now signals an error. (thanks to Zach
333 * bug fix: DEFGENERIC now works even when there's a function of the
334 same name in an enclosing lexical environment. (thanks to Zach
336 * fixed compiler failure, caused by instrumenting code during
337 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
338 * optimization: added loop analysis and improved register allocation
339 * fixed some bugs revealed by Paul Dietz' test suite:
340 ** POSITION on displaced vectors with non-zero displacement
341 returns the right answer.
342 ** (SIMPLE-STRING) is a valid type specifier for sequence
344 ** *PRINT-LEVEL* handling for slotless structures is pedantically
346 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
347 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
349 ** The justification version of the FORMAT ~< directive treats
350 non-zero minpad parameter correctly.
352 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
353 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
354 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
355 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
356 the supported interface.
357 * new feature: Single-stepping of code compiled with DEBUG 2 or
358 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
359 * new feature: saving cores with foreign code loaded is now
360 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
361 Timothy Moore's work for CMUCL)
362 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
363 parameters to * instead of NIL if no initform is supplied.
364 (reported by Johan Bockgaard)
365 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
366 correctly when FUNCALL appears as the car of the form. Note:
367 despite this FUNCALL forms are not currently subject to
368 compiler-macro expansion. (port of Raymond Toy's fix for the
369 same from CMUCL, reported by Johan Bockgaard)
370 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
371 (thanks for Teemu Kalvas)
372 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
373 case instead of terminating the iteration (thanks for Julian
374 Squires, Sean Champ and Raymond Toy)
375 * bug fix: incorrect expansion of defgeneric that caused a style
376 warning. (thanks for Zach Beane)
377 * bug fix: slot accessor effective method computation works properly
378 for classes with multiple non-standard applicable methods on
379 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
380 * on x86 compiler supports stack allocation of results of LIST and
381 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
382 CMUCL implementation by Gerd Moellmann)
383 * fixed some bugs revealed by Paul Dietz' test suite:
384 ** FORMAT strings with both the ~<~:;~> form of the justification
385 directive and pretty-printing directives cause an error.
387 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
388 * incompatible change: the internal functions
389 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
390 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
391 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
392 instead of the old functions.
393 * new feature: on platforms where "dladdr" is available foreign
394 function names now appear in backtraces. (based on Helmut Eller's
396 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
397 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
399 * documentation: ASDF manual is now distributed with SBCL.
400 * bug fix: SBCL can now load its contributed modules with REQUIRE
401 even if the system-provided entries have been removed from
402 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
404 * bug fix: backtraces involving undefined functions or assembly
405 routines are more informative. (thanks to Brian Downing)
406 * bug fix: mutually referent alien structures now work correctly.
407 (reported by Rick Taube)
408 * bug fix: structures defined by WITH-ALIEN can be referred to
409 within other definitions in the same WITH-ALIEN.
410 * bug fix: division operators (MOD, TRUNCATE and the like) with
411 constant zero divisors and integer dividends no longer generate
413 * bug fix: provide default methods for INPUT-STREAM-P and
414 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
415 * bug fix: improve the detection and resolution of MOP metacycles
416 (where effective method computation depends on the generic function
417 having its effective method computed). (reported by Bruno Haible)
418 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
419 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
420 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
421 * bug fix: pathnames with relative directory components can be
422 represented relative to default pathnames.
423 * optimization: in taking the GCD of bignums, reduce the two bignums
424 to approximately the same size (using Euclid's algorithm) before
425 applying the more sophisticated binary GCD. (thanks to Juho
427 * optimization: COUNT on bitvectors now operates word-at-a-time.
428 * optimization: ASH with a positive, but not necessarily constant,
429 (leftwards) shift, when in a modular context, is compiled to a
431 * fixed some bugs revealed by Paul Dietz' test suite:
432 ** FORMAT variable parameters ("~V<char>") are defaulted properly
433 if the corresponding argument is NIL.
434 ** FORMAT directives accepting a minpad parameter treat negative
436 ** literal commas as character parameters to FORMAT directives are
438 ** literal spaces directly after ~<Newline> directives within a
439 format-logical-block (~:< ~@:>) do not induce :FILL-style
440 conditional newlines.
441 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
442 as specified: it no longer includes conditional newlines).
443 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
445 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
446 :PER-LINE-PREFIX argument does not evaluate to a string.
448 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
449 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
450 the manual for details; for now, package locks can be disabled by
451 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
452 if no major problems are found then it is likely that they will be
453 compiled in unconditionally.
454 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
455 unsupported operators on all platforms. To load a shared library
456 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
457 object file, link it into a shared library outside of SBCL and
458 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
460 * bug workaround: ROOM T and the GC were not working together
461 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
462 reporting facility aren't preserved. That reporting has been
463 disabled, so now until and unless someone figures out how to make it
464 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
465 * minor incompatible change: as threatened around sbcl-0.8.0, the
466 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
467 The symbols are also exported from SB-PCL for backwards
468 compatibility, but more so than before SB-PCL should be treated as
469 an implementation-internal package.
470 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
472 * the SB-SPROF contrib now works on (most) non-x86 architectures.
473 It is known as of this release not to work on the Alpha, however.
474 * fixed bug #167: errors signalled due to illegal syntax in method
475 bodies are now more legible.
476 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
477 designators and can hence be used with TYPEP.
478 * fixed bug #333: CHECK-TYPE now ensures that the type error
479 signalled, if any, has the right object to be accessed by
480 TYPE-ERROR-DATUM. (reported by Tony Martinez)
481 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
482 5.1.2.3 for multiple-value place subforms. (reported by Kalle
484 * fixed bug #334: programmatic addition of slots using specialized
485 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
486 and :ALLOCATION :CLASS slots.
487 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
488 float exponents. (rereported by Peter Seibel)
489 * fixed a bug: #\Space (and other whitespace characters) are no
490 longer considered to be macro characters in standard syntax by
492 * fixed bug: initialization of condition class metaobjects no longer
493 causes an instance of the condition to be created. (reported by
495 * fixed bug: it is now possible to have slots such that
496 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
497 description is neither :INSTANCE nor :CLASS.
498 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
499 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
500 SLOT-VALUE-USING-CLASS), and no longer causes errors with
501 non-standard SLOT-DEFINITION-ALLOCATION values.
502 * fixed bugs: various race conditions handling exiting threads.
503 CL-PPCRE's thread torture test now passes.
504 * fixed arguably-a-bug: GC time proportional to number of threads in
505 system even when most of them are idle
506 * optimization: improved performance of BIT and SBIT on bit-vectors.
507 * .fasl file incompatibility: The fasl file version number has
508 been incremented because of changes associated with package locks.
510 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
511 * minor incompatible change: the system no longer provides
512 optimization hints (conditions which are TYPEP
513 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
514 mode; these hints are still emitted when higher SPEED optimization
516 * new contrib module: a sampling profiler (profiling by statistical
517 sampling, rather than by instrumenting functions) is available as
518 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
519 * the behaviour of the standard function ED is now customizeable by
520 third parties through a hook variable: see ED's documentation
521 string for information on the protocol.
522 * the compiler no longer emits efficiency notes for (FUNCALL X)
523 when the type of X is uncertain under default optimization
525 * fixed bug 276: mutating a binding of a specialized parameter to a
526 method to something that is not TYPEP the specializer is now
528 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
529 exhibit the required behaviour on the x86 platform. (thanks to
530 Peter van Eynde, Eric Marsden and Bruno Haible)
531 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
532 even for difficult arguments. (reported by Peter Graves)
533 * fixed bug 141a: the backquote printer now descends quoted
535 * fixed another bug in backquote printing: no more destructive
536 modification of the form's list structure. (reported by Brian
538 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
539 move between its address being taken and the call to
540 interrupt_thread, fixing a crashing race condition.
541 * the SB-POSIX contrib implementation has been adjusted so that it
542 no longer exhibits ridiculously poor performance when constructing
543 instances corresponding to C structs.
545 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
546 * minor incompatible change: the sb-grovel contrib now treats C
547 structures as alien (in the sense of SB-ALIEN) objects rather than
548 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
549 has implications for memory management of client code
550 (sb-grovel-returned objects must now be manually managed) and for
551 type safety (alien objects now have full types).
552 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
553 used to control emission of compiler diagnostics, rather than the
554 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
555 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
556 quality should be considered deprecated.
557 * install.sh now installs the user manual as well
558 * (not quite a new documentable feature, but worth considering in
559 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
560 beginnings of a semantically meaningful condition hierarchy is
561 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
563 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
564 designator as the defaults argument.
565 * fixed bug: Displaced arrays whose displaced-to array has become
566 too small now cause ARRAY-DIMENSION to signal an error, providing
567 for safer bounds-checking. (reported by Bruno Haible)
568 * fixed bug: DEFCLASS slot definitions with identical :READER and
569 :WRITER names now signal a reasonable error. (reported by Thomas
571 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
573 * fixed bug: Invalid slot specification errors now print correctly.
574 (thanks to Zach Beane)
575 * fixed bug 320: Shared to local slot value transfers in class
576 redefinitions now happen corrently from superclasses as
577 well. (reported by Bruno Haible)
578 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
580 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
581 improper lists correctly. (reported by Bruno Haible)
582 * fixed bug 313: source-transform for <fun-name> was erroneously
583 applied to a call of a value of a variable with name <fun-name>.
584 (reported by Antonio Menezes Leitao)
585 * fixed bug 307: The obsolete instance protocol ensures that
586 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
587 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
588 remove dead unknown-values globs from the middle of the stack.
589 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
590 easier to resume long computations after using *BREAK-ON-SIGNALS*
591 to diagnose and fix failures. (thanks to Nikodemus Siivola)
592 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
593 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
594 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
595 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
596 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
598 * fixed a (fairly theoretical) bug in string printing: if
599 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
600 does not have array-element-type equal to the most general string
602 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
603 function name. (thanks to Nikodemus Siivola)
604 * fixed bug: compile-time format string checker failed on
605 non-closed ~{. (reported by Thomas F Burdick)
606 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
607 don't warn on legal loop code involving more than one aggregate
608 boolean. (thanks to Nikodemus Siivola)
609 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
610 in keyword position to MAKE-PACKAGE was not being reported as
612 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
613 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
615 * fixed bugs 280 and 312: the checking for multiple definitions in a
616 file is less likely to become confused by uses of inline
618 * fixed bug: the #S reader macro performs the keyword coercion
619 specified for slot names. (reported by Kalle Niemitalo)
620 * fixed bug: lambda lists may contain symbols whose names start with
621 & but are not lambda-list-keywords; their occurrence triggers a
623 * fixed bug 321: define-method-combination argument lambda lists do
624 not cause invalid code to be generated when &optional or &aux
625 variables have default values. (reported by Bruno Haible)
626 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
627 have CLOS classes; this appears also to have fixed reported
628 instability in stack exhaustion detection.
629 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
630 MUFFLE-WARNING when no associated restart is present is now
632 * optimization: rearranged the expansion of various defining macros
633 so that each expands into only one top-level form in a
634 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
636 * optimization: used a previously little-used slot in symbols to
637 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
639 * fixed some bugs revealed by Paul Dietz' test suite:
640 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
642 ** Fixed an optimization bug related to inheritance of initforms
643 from local to shared slots.
644 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
645 ** CAST optimizer forgot to flush argument derived type.
646 ** print/read consistency on floats is now orders of magnitude
647 more likely. (thanks also to Bruno Haible for a similar report
649 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
650 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
651 for objects of type REAL. Make it so.
652 ** SXHASH is specified (infelicitously) to respect similarity,
653 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
654 it so. (thanks to Markus Ziegler)
655 ** on the Alpha, the compiler succeeds in compiling functions
656 returning a known number of arguments greater than 63.
657 ** fixed handling of invalid NIL arguments in keyword position
659 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
661 ** provided a readably-printable representation for RANDOM-STATE
663 ** ensured that pathnames, where they have a namestring, always
664 print using #P"..." syntax.
666 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
667 * Support for the forthcoming 2.0 version of the NetBSD kernel
668 running on x86 hardware has been added. (thanks to Perry
669 E. Metzger most immediately, and others for their past work)
670 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
671 current release version; SBCL's OpenBSD support had been broken
672 since about the time of OpenBSD's switch to ELF binary format.)
673 * [placeholder for DX summary]
674 ** user code with &REST lists declared dynamic-extent, under high
675 speed or space and low safety and debug optimization policy.
676 * The manual has been converted to Texinfo format and the debugger
677 chapter from the cmucl manual has been added.
678 * A facility has been added to extract documentation strings from
679 sbcl and store them as Texinfo-formatted snippets for inclusion in
680 the manual (via Texinfo's @include directive)
681 * bug fix: compiler emitted division in optimized DEREF. (thanks for
682 the test case to Dave Roberts)
683 * bug fix: multidimensional simple arrays loaded from FASLs had fill
684 pointers. (reported by Sean Ross)
685 * bug fix: PROFILE output is printed nicely even for large numerical
686 values. (thanks to Zach Beane)
687 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
688 greater than 32 handle EOF correctly.
689 * bug fix: on X86 an immediate argument of the IMUL instruction is
690 correctly printed in disassembly. (thanks to Lutz Euler)
691 * bug fix: class slots in redefined classes preserve their old
692 values. (thanks to Bruno Haible and Nikodemus Siivola)
693 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
694 succeeds. (reported by Marco Baringer)
695 * fixed some bugs revealed by Paul Dietz' test suite:
696 ** READ-SEQUENCE now works on ECHO-STREAMs.
697 ** RATIONALIZE works more according to its specification. (thanks
700 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
701 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
702 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
703 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
704 should matter to you only if you rebind the printer control
705 variables and then find you want different bindings in the
706 debugger than in the ordinary execution of your program.)
707 * The runtime build system has been tweaked to support building
708 (on SPARC/SunOS) using a C compiler which invokes Sun's own
709 assembler and linker. (thanks to Nikodemus Siivola)
710 * Unbound, undefined, undeclared variables now trigger full
711 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
712 more often programmer error than deliberate exploitation of undefined
714 * optimization: the hash algorithm for strings has changed to one
715 that is less vulnerable to spurious collisions. (thanks to Juho
717 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
718 needless bounds checking. (thanks to Juho Snellman)
719 * optimization: implemented multiplication as a modular
720 (UNSIGNED-BYTE 32) operation on the PPC backend.
721 * fixed some bugs revealed by Paul Dietz' test suite:
722 ** ADJUST-ARRAY now copies the datum in a zero rank array if
724 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
725 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
726 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
728 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
730 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
732 ** ECHO-STREAMs no longer attempt to echo the end of file value to
733 their output stream on EOF from read.
734 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
735 have been read to end-of-file.
736 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
738 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
739 description of determination of which consecutive characters
741 ** Printing the "Space" character with escaping on now yields "#\\ ",
742 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
743 ** Reading floating-point numbers with *READ-BASE* set to a number
744 less than 10 works correctly.
745 ** Reading floating-point numbers with *READ-BASE* set to a number
746 more than 10 works correctly.
747 ** Printing with *PRINT-READABLY* targets the standard readtable, not
748 the readtable currently in effect.
750 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
751 * minor incompatible change: parsing of namestrings on a physical
752 (Unix) host has changed; numbers after the final #\. in a
753 namestring are no longer interpreted as a version field. This is
754 intented to be largely invisible to the user, except that the
755 meaning of the namestring "*.*.*" has changed: it now refers to a
756 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
757 should usually be replaced by
758 (make-pathname :name :wild :type :wild :version :wild)
759 with the added benefit that this is more likely to be portable.
760 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
761 option to OPEN now signals an error if the file being opened
762 exists; this may have an impact on existing code.
763 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
764 signals received, on the PowerPC platforms (both Linux and
765 Darwin). (thanks to Pierre Mai for pointing out the location of
767 * several fixes on OS X: The system now builds and runs cleanly on
768 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
769 (thanks to Brian Mastenbrook)
770 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
771 second-resolution: integer multiples of 1/3600 between -24 and 24.
772 (thanks to Vincent Arkesteijn)
773 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
774 type when called with 1 argument; PEEK-CHAR checked type of
775 PEEK-TYPE only after having read first character from a
776 stream. (reported by Peter Graves)
777 * bug fix: the garbage collector now has much better locality
778 behaviour, and in particular no longer treats all memory as being
779 exhausted when many small objects point to each other in a deeply
781 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
782 recognized as being TYPEP their class.
783 * bug fix: the PUSHNEW documentation string has been corrected.
784 (thanks to Vincent Arkesteijn)
785 * bug fix: defaulting of the value for the last of an atypically
786 large number of multiple values being bound was not being
787 performed correctly on the Alpha or PPC platforms
788 * optimization: implemented multiplication as a modular
789 (UNSIGNED-BYTE 32) operation on the x86 backend.
790 * optimization: SEARCH on simple-base-strings can now be open-coded.
791 (see also contrib/compiler-extras.lisp for inspiration for
792 teaching the compiler about the Boyer-Moore algorithm).
793 * value, returned by MAX (and MIN) called with several EQUALP, but
794 not EQL, arguments now does not depend on compiler settings.
795 * fixed some bugs revealed by Paul Dietz' test suite:
796 ** in stack analysis liveness information is propagated from
797 non-local entry points.
798 ** pathwise CAST removing failed when the CAST node did not start
800 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
801 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
803 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
804 host is already defined.
805 ** RENAME-FILE works on streams instead of signalling an internal
807 ** PEEK-CHAR uses the current readtable when determining whether
808 or not a character is whitespace.
809 ** MERGE-PATHNAMES handles the case when the pathname does not
810 specify a name while the default-pathname specifies a version.
811 ** Pathnames now stand a better chance of respecting print/read
813 ** Attempting to use standardized file system operators with a
814 pathname with invalid :DIRECTORY components signals a
816 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
818 ** DIRECTORY on logical pathnames is more correct.
819 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
820 signal a TYPE-ERROR if their argument is not a stream.
821 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
822 designator argument does not designate a stream.
823 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
824 examining the synonym.
825 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
827 ** OPEN and WITH-OPEN-STREAM allow opening streams with
828 element-type larger than ([UN]SIGNED-BYTE 32).
830 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
831 * When built with the :SB-FUTEX feature, threaded builds now take
832 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
833 for faster/more reliable mutex and condition variable support.
834 * Incompatible change (but one you probably shouldn't have been using
835 anyway): the interface and code for arbitrating between multiple
836 threads in the same user session has been redesigned.
837 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
838 error when called without an explicit environment argument.
839 (thanks to Nikodemus Siivola)
840 * bug fix: buffered :DIRECTION :IO streams are less likely to become
841 confused about their position. (thanks to Adam Warner and Gerd
843 * bug fix: Pretty printing backquoted forms with unquotations in the
844 argument list position of various code constructs such as LAMBDA
845 now works correctly. (reported by Paul Dietz)
846 * bug fix: Pretty printing unquotations no longer loses all
847 stream position information.
848 * optimization: performance of string output streams is now less
849 poor for multiple small sequence writes.
850 * optimization: performance of CSUBTYPEP in the presence of complex
851 expressions involving CONS and NOT many times has been improved.
852 (reported by Paul Dietz)
853 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
855 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
856 streams for the REPL, for the debugger, and so on. (thanks to
858 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
859 * fixed some bugs revealed by Paul Dietz' test suite:
860 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
861 is ignored if it is too small, rather than propagating through
862 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
863 ** extremely complex negations of CONS types were not being
864 sufficiently canonicalized, leading to inconsistencies in
866 ** VALUES tranformer lost derived type.
868 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
869 * fixed a bootstrapping bug: the build process no longer assumes
870 that the various BOOLE-related constants have the same value in
871 host and target lisps. (noted by Paul Dietz' test suite on an
872 SBCL binary built from CLISP)
873 * The system can now be dynamically linked on the MIPS platform,
874 which enables dynamic loading of foreign code from Lisp. (thanks
875 to Ralf Baechle for discussions on the MIPS ABI)
876 * The system now records debugging information for its own source
877 files in a filesystem-position-independent manner, relative to
878 the "SYS" logical host.
879 * fixed a compiler bug: MV-LET convertion did not check references
880 to the "max args" entry point. (reported by Brian Downing)
881 * tweaked disassembly notes to be less confident about proclaiming
882 some instruction as an LRA. (thanks to Brian Downing)
883 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
884 now each have their own history, command character, and other
885 characteristics. (thanks to David Lichteblau)
886 * fixed some bugs revealed by Paul Dietz' test suite:
887 ** compiler failure in compiling LOGAND expressions including a
889 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
890 shift greater than 32.
891 ** FLUSH-DEST did not mark blocks for type check regeneration.
892 ** HANDLER-CASE failed to accept declarations in handler clauses
893 in some circumstances.
895 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
896 * New code in contrib/sb-introspect (still probably not entirely
897 stable yet) provides some support for smart Lisp development
898 environments like SLIME.
899 * The conditions signalled for errors occurring when loading .fasl
900 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
901 in a way which should help ASDF recover gracefully.
902 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
903 stuff has been cleaned up. If you code contrib/ stuff, this might
904 affect you, and you can look at contrib/README, contrib/STANDARDS,
905 and/or the 0.8.4.27 diff to check.
906 * In full calls the compiler now does not generate checks for declared
907 argument types for all arguments.
908 * various threading fixes
909 ** and some experimental patches which didn't make it into
910 the main tree for this release, but which are shipped in
911 contrib/experimental-thread.patch as a possible fix for some
912 failures (deadlock, spinning...) in GC-intensive multithreaded
914 * fixed PPC build problem (source code incompatibility of different
915 library versions): added offsetof() hackery which attempts to divine
916 where glibc maintainers put uc_mcontext today
917 * fixed bug 282: compiler does not trust type assertions while passing
918 arguments to a full call.
919 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
920 &OPTIONAL VALUES type parameter.
921 * fix bug 214: algorithm for noting rejected templates is now more
922 similar to that of template seletion. (also reported by rydis on
924 * fixed bug 141b: printing backquoted information readably and prettily
925 inserts a space where necessary.
926 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
927 (CHARACTER 10) are now reported as errors, rather than propagated
928 as unknown types. (reported by piso on #lisp)
929 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
930 with values NIL and :ERROR. (thanks to Milan Zamazal)
931 * fixed bug 191c: CLOS now does proper keyword argument checking as
932 described in CLHS 7.6.5 and 7.6.5.1.
933 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
934 longer raise an error; further, using a list as a for-as-arithmetic
935 counter now raises a meaningful error.
936 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
937 now understood by sequence creation functions such as MAKE-SEQUENCE
939 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
940 a STRING-INPUT-STREAM.
941 * compiler enhancement: SIGNUM is now better able to derive the type
943 * type declarations inside WITH-SLOTS are checked. (reported by
945 * fixed some bugs revealed by Paul Dietz' test suite:
946 ** incorrect optimization of TRUNCATE for a positive first
947 argument and negative second.
948 ** compiler failure in let-convertion during flushing dead code.
949 ** compiler failure while deriving type of TRUNCATE on an
950 interval, containing 0.
951 ** ASH of a negative bignum by a negative bignum count now returns
953 ** intersection of CONS types now canonicalizes properly, fixing
954 inconsistencies in SUBTYPEP.
956 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
957 * incompatible change: The --disable-debugger command line
958 option now clobbers the debugger at a more fundamental
959 level, by redefining #'INVOKE-DEBUGGER instead of by
960 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
961 is specified by ANSI to ignore *DEBUGGER-HOOK* and
962 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
963 enter the debugger REPL and then suffer recursive errors
964 because *DEBUG-IO* is also messed up in --disable-debugger mode;
965 while under the new system, BREAK in --disable-debugger mode
966 terminates the system just as an unhandled error would.
967 * fixed compiler performance when processing loops with a step >1;
968 * bug fix: DOCUMENTATION now retrieves generic function
969 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
970 support has been systematized, and now supports the methods
971 specified by ANSI, along with a default method and a method for
972 slot documentation. (reported by Nathan Froyd)
973 * bug fix: effective methods associated with a generic function are
974 no longer cached over a change of that generic function's method
975 combination. (reported by Andreas Fuchs)
976 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
977 names a non-existent directory. (thanks to Andreas Fuchs)
978 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
979 the PPC platform, lead to stack corruption; this has been fixed.
980 (reported by Rainer Joswig)
981 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
982 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
983 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
984 arithmetic in general, is now much more reliable on the PPC
986 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
987 platform now returns the right answer.
988 * optimization: restored some effective method precomputation in
989 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
990 precomputation is now tunable.
991 * optimization: compiler-internal data structure use has been
992 reviewed, and changes have been made that should improve the
993 performance of the compiler by about 20%.
994 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
995 simple-base-strings and simple-bit-vectors is improved.
996 * optimization: the optimization of 32-bit logical and arithmetic
997 functions introduced in version 0.8.3 on the x86 has been
998 implemented on the mips, ppc and sparc platforms; an
999 implementation of the same facility, but for 64-bit arithmetic,
1000 has been added for the alpha.
1001 * microoptimization: the compiler is better able to make use of the
1002 x86 LEA instruction for multiplication by constants.
1003 * bug fix: in some situations compiler did not report usage of
1004 generic arithmetic in (SPEED 3) policy.
1005 * bug 145b fix: compiler used wrong type specifier while converting
1006 MEMBER-types to numeric.
1007 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1009 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1010 index argument now works properly on the Alpha platform.
1011 * bug fix: floating point exception treatment on the Alpha platform
1013 * bug fix: FILE-POSITION works much better on string input and
1014 output streams. (thanks to Nikodemus Siivola)
1015 * bug fix: many threading/garbage collection symptoms sorted.
1016 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1017 might be pseudo-atomic.
1018 * internal change: Stopping for GC is now done with signals not
1019 ptrace. GC is now done in whichever thread wanted it, instead of
1021 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1023 * bug fix: result form in DO is not contained in the implicit
1025 * incompatible change: ICR structure is changed; the value part of
1026 CONTINUATION is now called LVAR; corresponding functions are
1027 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1028 * added type deriver for ISQRT (thanks to Robert E. Brown).
1029 * bug fix: better support for loading from the command line when an
1030 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1032 * fixed some bugs revealed by Paul Dietz' test suite:
1033 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1034 ** ROUND and FROUND now give the right answer when given very
1035 small float arguments.
1036 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1038 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1039 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1040 ** LCM should return a non-negative integer.
1041 ** PARSE-INTEGER returned the index of a terminator instead of the
1042 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1043 ** PARSE-INTEGER returned an incorrect index being applied to a
1045 ** LCM with two arguments of 0 returns 0 rather than signalling
1047 ** unsigned addition of a 32-bit constant with the high bit set no
1048 longer causes an internal compiler error on the x86.
1049 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1050 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1051 with negative last argument.
1052 ** byte specifiers with zero size and position no longer cause
1053 an error during type derivation.
1054 ** bignum multiplication on the Alpha platform now returns the
1056 * porting: The system now builds on SuSE AMD64, although it still
1057 generates a 32-bit binary.
1058 * .fasl file incompatibility: The fasl file version number has
1059 been incremented (because of the changes to internal compiler
1060 data structures referred to above).
1062 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
1063 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
1064 more accurately, on the Darwin kernel running on PowerPC hardware.
1065 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
1066 * Compiler code deletion notes now signal a condition of type
1067 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
1068 an associated MUFFLE-WARNING restart.
1069 * The compiler now performs limited argument count validation of
1070 constant format strings in FORMAT, and where appropriate in ERROR,
1071 CERROR and WARN. (thanks to Gerd Moellmann)
1072 * New ASDF-INSTALL contrib can be used for automatic download and
1073 installation of third-party Lisp code from CCLAN or other sites
1075 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
1076 which forces another thread to execute a function supplied by the
1078 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
1079 now accept and act upon their :ELEMENT-TYPE keyword argument.
1080 (reported by Martin Atzmueller, Edi Weitz)
1081 * bug fix: FILE-POSITION now accepts position designators up to
1082 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
1083 is the greater. (thanks to Patrik Nordebo)
1084 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
1085 Kalle Olavi Niemitalo)
1086 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
1087 printable. (reported by Eric Marsden)
1088 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
1089 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
1090 * x86 bug fix in control stack exhaustion checking: now shows backtrace
1091 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
1092 (thanks to Stig Sandoe)
1093 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
1094 UNREAD-CHAR now correctly includes the unread character in the
1095 target sequence. (thanks to Gerd Moellmann)
1096 * bug fix in threaded builds: the system can now be suspended and
1097 resumed by shell job control with minimal disruption.
1098 * bug fixes in times and timezones >2038AD
1099 * better handling of "where is GNU make?" problem in build scripts
1100 (thanks to Nikodemus Siivola)
1101 * new optimization: inside a named function any reference to a
1102 function with the same name is considered to be a self-reference;
1103 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
1104 optimization quality.
1105 * new optimization on x86: logical functions and + now have
1106 optimized (UNSIGNED-BYTE 32) versions, which are automatically
1107 used when the result is truncated to 32 bits.
1108 * VALUES declaration is partially enabled.
1109 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
1110 * fixed some bugs revealed by Paul Dietz' test suite:
1111 ** The system now obeys the constraint imposed by
1112 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
1113 types form a lattice under type intersection.
1114 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
1115 ** ASSOC now ignores NIL elements in an alist.
1116 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
1117 and (1+ MOST-POSITIVE-FIXNUM) answers.
1118 ** The addition of a method with invalid qualifiers to a generic
1119 function does not cause an error to be signalled immediately;
1120 a warning is signalled, and the error is generated only on
1121 calling the generic function.
1122 * changed .fasl file version number, in part to add type codes for
1123 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
1124 obscure ANSI requirements
1126 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
1127 * fixed bug 148: failure to inline-expand a local function left
1128 garbage, confusing the compiler.
1129 * fixed bugs 3cd: structure slot readers perform type check if the
1130 slot can have an invalid value (i.e. it is either not initialized
1131 or can be written with a less specific slot writer).
1132 * bug fix: the compiler now traps array references to elements off
1133 the end of an array; previously, the bounds checking in some
1134 circumstances could go off-by-one.
1135 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
1137 * type declarations for array element types now obey the description
1138 on the CLHS page "Declaration TYPE", as per discussions on
1139 sbcl-help around 2003-05-08. This means that a declaration
1140 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
1141 declaration, all references to BAR will be asserted or assumed
1142 (with THE, so dependent on compiler policy) to involve objects of
1143 type FOO. Note that no such declaration is implied in
1144 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
1145 * declared types of functions from the "Conditions"
1146 chapter. (reported by Paul Dietz)
1147 * bug fix: CERROR accepts a function as its first argument.
1148 * bug fix: NTH an NTHCDR accept a bignum as index
1149 arguments. (reported by Adam Warner)
1150 * optimization: character compare routines now optimize comparing
1151 against a constant character. (reported by Gilbert Baumann)
1152 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
1153 argument now works properly on the MIPS platform.
1154 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
1155 * repeated evaluation of the same DEFSTRUCT, a slot of which is
1156 declared to have a functional type, does not cause an error
1158 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
1159 many :DEFAULT-INITARGS. (reported by Istvan Marko)
1160 * fixed bug: if last continuation of a deleted block has a
1161 destination, this destination should be deleted too. (reported by
1163 * fixed a bug in the bootstrap process: the host compiler's values
1164 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
1165 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
1166 test case from Patrik Nordebo)
1167 * improved the ability of the disassembler on the PPC platform to
1168 provide helpful disassembly notes.
1169 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
1170 the class in more cases than previously.
1171 * bug fix: FILE-POSITION now understands :START and :END for
1172 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
1173 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
1174 8) data. (thanks to David Lichteblau)
1175 * bug fix: it is possible to add a method to a generic function
1176 without lambda list.
1177 * bug fix: reader failed to signal END-OF-FILE inside an
1178 object representation. (reported by Nikodemus Siivola)
1179 * fixed some bugs revealed by Paul Dietz' test suite:
1180 ** LAST and [N]BUTLAST should accept a bignum.
1181 ** condition slot accessors are methods.
1182 ** (VECTOR NIL) is a subtype of STRING.
1184 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
1185 * minor incompatible change: some nonsensical specialized lambda
1186 lists (used in DEFMETHOD) which were previously ignored now signal
1188 * minor incompatible change: the system is now aware of the types of
1189 variables in the COMMON-LISP package, and will signal errors for
1190 most violations of these type constraints (where previously they
1191 were silently accepted).
1192 * minor incompatible change: COMPILE-FILE now uses the freedom
1193 afforded (ANSI 3.2.2.3) to use derived function types for
1194 functions defined in the same file. This also permits the system
1195 to warn on static type mismatches and function
1196 redefinition. (Currently it does not work with high DEBUG level.)
1197 * minor incompatible change: VALUES declaration is disabled.
1198 * When issuing notes, the compiler now signals a condition of type
1199 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
1200 restart for use in user handlers. It is expected that the
1201 COMPILER-NOTE condition will eventually become a condition
1202 supertype to a hierarchy of note types, which will then be
1203 handleable in a similar fashion. However, at the moment, no such
1204 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
1205 but it's an implementation detail, not a classification for the
1207 * Changes in type checking closed the following bugs:
1208 ** type checking of unused values (192b, 194d, 203);
1209 ** template selection based on unsafe type assertions (192c, 236);
1210 ** type checking in branches (194bc).
1211 * A short form of VALUES type specifier has ANSI meaning (it has
1212 increased the number of situations when SBCL cannot perform type
1214 * fixed bug in DEFSTRUCT: once again, naming structure slots with
1215 keywords or constants is permissible.
1216 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
1217 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
1218 classes. (thanks to Antonio Martinez)
1219 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
1220 outputs FRESH-LINE or TERPRI, and no longer converts its stream
1221 argument to a pretty-print stream. Instead, it leaves any such
1222 operations to DESCRIBE-OBJECT methods.
1223 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
1225 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
1226 lambda lists. (thanks to David Lichteblau)
1227 * bug fix: Defining a generic function with a :METHOD-CLASS being a
1228 subclass of STANDARD-METHOD no longer causes stack exhaustion.
1229 (thanks to Gerd Moellmann)
1230 * fixed bug 246: increased compilation speed of long
1231 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
1233 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
1235 * DEFCONSTANT now throws a condition of type
1236 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
1237 constant to a non-EQL value; CONTINUE and ABORT restarts
1238 respectively change and preserve the value.
1239 * fixed bug 63: The code walker, part of the implementation of CLOS,
1240 is now better at handling symbol macros.
1241 * bug fix: There is no longer an internal implementation type named
1242 CL:LENGTH. (reported by Raymond Toy)
1243 * bug fix: In macro-like defining macros/special operators the
1244 implicit block does not enclose the lambda list.
1245 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
1246 enclosed in parentheses) are not suitable as type specifiers, and
1247 their use properly signals an error now.
1248 * bug fix: An argument count mismatch for a type specifier in code
1249 being compiled no longer causes an unhandled error at compile
1250 time, but signals a compile-time warning.
1251 * fixed simple vector readable printing
1252 * bug fix: DESCRIBE takes more care over whether the class
1253 precedence list slot of a class is bound before accessing it.
1254 (reported by Markus Krummenacker)
1255 * bug fix: FORMATTER can successfully compile pretty-printer format
1256 strings which use variants of the ~* directive inside.
1257 * bug fix: SEARCH now applies its TEST predicate to the elements of
1258 the arguments in the correct order. (thanks to Wolfhard Buss)
1259 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
1260 in type inference. (thanks to Robert E. Brown)
1261 * bug fix: Reading in symbols with an explicit package name of ""
1262 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
1263 * fixed some bugs revealed by Paul Dietz' test suite:
1264 ** NIL is now allowed as a structure slot name.
1265 ** Arbitrary numbers, not just REALs, are allowed in certain
1266 circumstances in LOOP for-as-arithmetic clauses.
1267 ** Multiple class redefinitions before slot access no longer
1268 causes a type error.
1269 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
1270 association between the name and a class.
1271 ** Generic functions with non-standard method-combination and over
1272 five methods all of which return constants no longer return NIL
1273 after the first few invocations. (thanks to Gerd Moellmann)
1274 ** CALL-NEXT-METHOD with no arguments now passes the original
1275 values of the arguments, even in the presence of assignment.
1276 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
1278 ** DISASSEMBLE works with closures and funcallable instances.
1279 ** ADD-METHOD now returns the generic function, not the new method.
1280 ** FIND-METHOD signals an error if the lengths of the specializers
1281 is incompatible with the generic function, even if the ERRORP
1283 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
1284 which its argument is a member.
1285 ** DEFCLASS only redefines the class named by its class-name
1286 argument if that name is the proper name of the class;
1287 otherwise, it creates a new class.
1288 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
1289 of the UNBOUND-SLOT condition to the name of the slot.
1290 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
1291 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
1292 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
1293 SLOT-MAKUNBOUND in the specified fashion.
1295 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
1296 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
1297 cross-compilation host. As a consequence, we can now bootstrap our
1298 way up to SBCL starting with a bare gcc toolchain and human-readable
1299 source code (first the source to CLISP, then the source to SBCL).
1300 * A contributed module containing a partial implementation of the
1301 simple-streams interface has been included. (thanks to Rudi
1303 * A contributed module implementing the RFC1321 Message Digest
1304 Algorithm, known as MD5, has been included.
1305 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1306 no longer has any effect, as the code controlled by this feature
1307 has been deleted. (As far as we know, no-one has ever built using
1308 this feature, and its semantics were confused in any case).
1309 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
1310 work on conditions (as required by the ANSI specification),
1311 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
1312 expected behaviour on conditions. Users should note, however,
1313 that such behaviour is not required by the ANSI specification,
1314 and so use of this behaviour may render their code unportable.
1315 * fixed some bugs revealed by Paul Dietz' test suite:
1316 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
1318 ** &ENVIRONMENT parameter in macro lambda list is bound first.
1319 ** SXHASH on condition objects no longer returns NIL.
1320 ** :ALLOCATION :CLASS slots are better treated; their values are
1321 updated on class redefinition, and initforms inherited from
1322 superclasses are applied.
1323 ** REMOVE-METHOD returns its generic function argument even when
1324 no method was removed.
1325 ** SHARED-INITIALIZE now initializes the values of the requested
1326 slots, including those with :ALLOCATION :CLASS.
1327 ** ALLOCATE-INSTANCE now works on structure classes defined via
1328 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
1330 ** SLOT-EXISTS-P now works on conditions, as well as structures
1332 ** MAKE-LOAD-FORM now has the required methods on
1333 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
1334 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
1335 keyword, and now implements the SLOT-NAMES argument.
1336 ** methods with &OPTIONAL arguments no longer allow too many
1337 arguments to be passed in the call without error.
1338 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
1339 option is consistent with the required arguments of the generic
1340 function lambda list.
1341 * bug fix: REQUIRE accepts a string designator. (Thanks to
1343 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
1344 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
1345 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
1346 * bug fix: The compiler now checks for duplicated variables in macro
1348 * bug fix: SETQ on globals returns the correct value.
1349 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
1350 not a COMPILER-ERROR (followed by some other strange error on
1351 choosing the CONTINUE restart).
1352 * bug fix: make.sh and friends are now more consistent in the way that
1353 they look for GNU "make".
1355 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
1356 * experimental native threads support (on x86 Linux >=2.4 only).
1357 This is not compiled in by default: you need to add :SB-THREAD to
1358 the target features. See the "Beyond ANSI" chapter of the manual
1360 * fix for longstanding nonANSIism: The old distinction between
1361 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
1362 The return value from CL:FIND-CLASS is now a CLOS class, and
1363 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
1364 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
1365 * An interface to the MetaObject Protocol, as described in Kiczales,
1366 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
1367 MIT Press, 1991, is available from the SB-MOP package.
1368 * incompatible change: the SB-PCL package should now be considered
1369 a private implementation detail, and no longer a semi-private MOP
1371 * minor incompatible change: due to rearrangement for threads, the
1372 control stack and binding stack are now allocated at arbitrary
1373 addresses instead of being hardcoded per-port. Users affected by
1374 this probably have to be doing advanced things with shared
1375 libraries, and will know who they are.
1376 * minor incompatible change: Previously, all --eval forms used were
1377 processed with READ before any of them were processed with EVAL.
1378 Now each --eval form is processed with both READ and EVAL before
1379 the next --eval form is processed. (Thus package operations like
1380 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
1381 work as the user might reasonably expect.)
1382 * minor incompatible change: *STANDARD-INPUT* is now only an
1383 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
1385 * minor incompatible change: Y-OR-N-P is now character-oriented,
1386 not line oriented. Also, YES-OR-NO-P now works without errors.
1387 (thanks to Antonio Martinez)
1388 * sb-aclrepl module improvements: an integrated inspector, added
1389 repl features, and a bug fix to :trace command.
1390 * Known functions, which cannot be open coded by the backend, are
1391 considered to be able to check types of their arguments. (fixing
1392 a bug report by Nathan J. Froyd)
1393 * fixed a bug in computing method discriminating functions: It is
1394 now possible to define methods specialized on classes which have
1395 forward-referenced superclasses. (thanks to Gerd Moellmann)
1396 * fixed evaluation order in optional entries (reported by Gilbert
1398 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
1399 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
1400 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
1401 required-by-AMOP NAME argument, as well as CLASS and
1402 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
1403 * fixed bug 20: DEFMETHOD can define methods using names that are
1404 not the proper names of classes to designate class specializers.
1405 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
1406 Unix file descriptors, instead of blowing up. (thanks to Antonio
1408 * Garbage collection refactoring: user-visible change is that a
1409 call to the GC function during WITHOUT-GCING will not do garbage
1410 collection until the end of the WITHOUT-GCING. If you were doing
1411 this you were probably losing anyway.
1412 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
1413 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
1414 TYPEP the latter but not the former.
1415 * The compiler issues a full WARNING for calls to undefined functions
1416 with names from the CL package.
1417 * MAP-INTO for a vector destination is open coded. (reported by
1418 Brian Downing on c.l.l)
1419 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
1420 documentation string.
1421 * fixed some bugs revealed by Paul Dietz' test suite:
1422 ** COPY-ALIST now signals an error if its argument is a dotted
1424 ** Condition slots are now accessed more correctly in the presence
1425 of multiple initargs for a given slot.
1426 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
1427 exclude restarts of the same name associated with a different
1429 ** DEFCLASS of forward-referenced classes with another
1430 forward-referenced class in the superclasses list no longer
1432 ** Condition slots are now initialized once each, not multiple
1433 times. (thanks to Gerd Moellmann)
1434 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
1436 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
1437 ** NSET-EXCLUSIVE-OR does not return extra elements when its
1438 arguments contain duplicated elements.
1439 ** RESTART-CASE understands local macros.
1440 ** RESTART-CASE associates exactly its own restarts with a condition.
1441 ** ENDP in safe mode checks its argument to be of type LIST.
1442 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
1443 in question is unbound.
1444 ** Optimized MAKE-INSTANCE functions no longer cause internal
1445 assertion failures in the presence of duplicate initargs.
1446 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
1447 ** Side-effectful :DEFAULT-INITARGS have their side-effects
1448 propagated even in the ctor optimized implementation of
1450 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
1452 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
1453 * a better implementation of SXHASH on (simple) bit vectors,
1454 measured both in execution speed and in distribution of results
1455 over the positive fixnums, has been installed. Likewise, a better
1456 implementation of EQUAL for simple bit vectors is now available.
1457 * fixed CEILING optimization for a divisor of form 2^k.
1458 * fixed bug 240 (emitting extra style warnings "using the lexical
1459 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
1460 by Antonio Martinez)
1461 * fixed SXHASH, giving different results for NIL depending on type
1462 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
1463 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
1464 variable. (found by Rolf Wester)
1465 * SBCL does not ignore type declarations for special
1466 variables. (reported by rif on c.l.l 2003-03-05)
1467 * some bug fixes in contrib/sb-aclrepl/
1468 * fixed some bugs revealed by Paul Dietz' test suite:
1469 ** a bug in the CONS type specifier, whereby the CAR and CDR
1470 types got intertwined, has been fixed;
1471 ** the type system is now able to reason about the interaction
1472 between INTEGER and RATIO types more completely;
1473 ** APPEND, [N]REVERSE and NRECONC check that those their
1474 arguments, which must be proper lists, are really so;
1475 ** An array specialized to be unable to hold elements has been
1476 implemented, as required -- yes, really -- by ANSI;
1477 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
1478 on malformed property lists;
1480 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
1481 * incompatible packaging change: in line with Unix convention,
1482 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
1483 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
1484 * REQUIRE and PROVIDE are now optionally capable of doing something
1485 useful. See the documentation string for REQUIRE.
1486 * infrastructure for a managed SBCL contrib system: contributed
1487 modules in this release include:
1488 ** the ASDF system definition facility;
1489 ** an interface to the BSD Sockets API;
1490 ** an ACL-like convenience interface to the repl;
1491 (thanks to Kevin Rosenberg)
1492 ** an implementation of ROTATE-BYTE, with efficient implementation
1494 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
1495 gives a closer approximation to the right answer than previously.
1496 (thanks to Raymond Toy)
1497 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
1498 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
1499 optional environment arguments, as required by ANSI.
1500 * fixed bugs in other functions taking environment objects, allowing
1501 calls with an explicit NIL environment argument to be compiled
1503 * fixed bug 228: primary return values from
1504 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
1505 COMPILE or FUNCTION.
1506 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
1507 :TYPE will no longer signal errors on innocuous objects.
1508 * fixed bug 231b: SETQ is better at respecting type declarations in
1509 the lexical environment.
1510 * fixed a bug in DEFCLASS: classes named by symbols with no or
1511 unprintable packages can now be defined.
1512 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
1513 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
1514 * fixed compiler failure related to checking types of functions.
1515 (reported by Robert E. Brown)
1516 * the compiler is now much more consistent in its error-checking
1517 treatment of bounding index arguments to sequence functions: in
1518 (SAFETY 3) code, errors will be signalled in almost all cases if
1519 invalid sequence bounding indices are passed to functions defined
1520 by ANSI to operate on sequences.
1521 * fixed a bug in the build procedure: documentation of SBCL-specific
1522 packages is now preserved and available in the final Lisp image.
1523 * lifted FDEFINITION lookup out of loops in the implementation of
1524 many list operations. (thanks to Robert E. Brown)
1525 * fixed a bug in the reader: the #n# reader macro now works for
1526 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
1527 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
1528 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
1529 E. Brown and Tony Martinez respectively)
1530 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
1531 SLOT-BOUNDP: in particular, it is now able to optimize them much
1532 better, and is now not vulnerable to having packages renamed.
1533 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
1534 always called when a slot is not present in an instance. (thanks
1536 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
1537 longer signal an error on unreading a character following EOF on
1538 the previous constituent stream. (thanks to Tony Martinez)
1539 * fixed some bugs revealed by Paul Dietz' test suite:
1540 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
1541 not just nonnegative fixnums;
1542 ** the logical bit-array operators such as BIT-AND now accept an
1543 explicit NIL for their "opt-arg" argument (to indicate a
1544 freshly-consed result bit-array);
1545 ** ELT now signals an error on an invalid sequence index in safe
1547 ** the type system is now cleverer about negations of numeric
1548 types, and consequently understands the BIGNUM and RATIO types
1550 ** the type system is now cleverer about the interaction between
1551 INTEGER and RATIO types: while bugs still remain, many more
1552 cases are accurately computed;
1553 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
1554 if it is in the last clause;
1555 ** CONSTANTLY now correctly returns a side-effect-free function in
1557 ** DECLARE is no longer treated as a special-operator; in
1558 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
1559 * incremented fasl file version number due to the change in the
1560 DEFSTRUCT-SLOT-DESCRIPTION structure.
1562 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
1563 * minor incompatible change: code processed by the "interpreter" or
1564 EVAL now has a compilation optimization policy of (DEBUG 2)
1565 (changed from (DEBUG 1)) to improve debuggability of interactive
1566 development, and to allow the use of the debug RETURN command in
1568 * an experimental implementation of the RETURN command for the
1569 debugger has been included. (thanks to Frederik Kuivinen)
1570 * fixed bug 62: constraints were not propagated into a loop.
1571 * fixed bug in embedded calls of SORT (reported and investigated by
1573 * fixed some bugs revealed by Paul Dietz' test suite:
1574 ** printing and reading of arrays with some dimensions having
1575 length 0 (thanks to Gerd Moellmann);
1576 ** BOA constructor with &AUX argument without a default value does
1577 not cause a type error;
1578 ** CONSTANTP now returns true for all self-evaluating objects.
1580 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
1581 * fixed bug 127: DEFSTRUCT now does not clobber old structure
1582 accessors that are related by inheritance, as specified in the
1583 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
1584 Valtteri Vuorikoski)
1585 * The compiler is now able to inline functions that were defined in
1586 a complex lexical environment (e.g. inside a MACROLET).
1587 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
1589 * Support for the upcoming FreeBSD-5.0 release has been included.
1590 (thanks to Dag-Erling Smorgrav)
1591 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
1592 effect when it is not in a toplevel context.
1593 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
1594 stand a better chance of being correct. (thanks to Gerd
1596 * fixed bug in COERCE, which now signals an error on coercing a
1597 rational to a bounded real type which excludes the expected
1599 * The compiler is now able to derive types more accurately from the
1600 COERCE and COMPILE functions.
1601 * fixed bug 223: functional binding is considered to be constant
1602 only for symbols in the CL package.
1603 * fixed bug 231: SETQ did not check the type of a variable being set
1604 (reported by Robert E. Brown)
1605 * A new optimization for MAKE-INSTANCE has been included, fixing
1606 various bugs (including relating to :ALLOCATION :CLASS slots and
1607 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
1609 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
1610 ** As required by ANSI, LOOP now disallows anonymous collection
1611 clauses such as COLLECT I in conjunction with aggregate boolean
1612 clauses such as THEREIS (= I 1);
1613 ** LOOP now signals an error when any variable is reused in the
1614 same loop (including the potentially useful construct analogous
1615 to WITH A = 1 WITH A = (1+ A);
1616 ** IT is only a special loop symbol within the first clause of a
1617 conditional loop clause;
1618 ** LOOP with a typed iteration variable over a hashtable now
1619 signals a type error iff it should.
1620 * fixed some other bugs revealed by Paul Dietz' test suite:
1621 ** FILE-STREAM now names the class previously known as FD-STREAM;
1622 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
1623 argument) no longer signals an error;
1624 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
1625 of the slot symbol, rather than using the current package
1626 ((:CONC-NAME "") continues to intern the slot's name in the
1628 * incremented fasl file version number, because of the incompatible
1629 change to the DEFSTRUCT-DESCRIPTION structure, and again because
1630 of the new implementation of DEFINE-COMPILER-MACRO.
1632 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
1633 * Support for building SBCL for MIPS platforms running in
1634 little-endian mode has now been checked in, and basic
1635 functionality on said platforms verified.
1636 * minor incompatible change: PCL now records the pathname of a file
1637 in which methods and the like are defined, rather than its
1639 * minor incompatible change: TRUENAME now considers the truename of
1640 a file naming a directory to be the pathname with :DIRECTORY
1641 component indicating that directory.
1642 * minor incompatible change: a NAMED clause in the extended form of
1643 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
1644 reason for the previous behaviour is unclear.
1645 * more systematization and improvement of CLOS and MOP conformance
1646 in PCL (thanks to Gerd Moellman and Pierre Mai):
1647 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
1649 ** DEFINE-METHOD-COMBINATION no longer signals an error for
1650 primary methods with no specializers;
1651 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
1653 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
1654 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
1655 FORWARD-REFERENCED-CLASSes; error reporting on
1656 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
1658 ** SXHASH on CLOS instances now uses a slot internal to the
1659 instance to return different numbers on distinct instances,
1660 while preserving the same return value through invocations of
1662 ** DEFMETHOD signals errors when methods with longer incongruent
1663 lambda lists are added to generic functions;
1664 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
1665 CLASS, as specified in AMOP;
1666 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
1667 on the order returned by the primary method for classes of
1668 class STANDARD-CLASS;
1669 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
1670 * fixed some bugs shown by Paul Dietz' test suite:
1671 ** DOLIST puts its body in TAGBODY;
1672 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
1674 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
1675 value producing form;
1676 ** if more variables are given to PROGV than values, extra
1677 variables are bound and made to have no value;
1678 ** NSUBSTITUTE on list arguments gets the right answer with
1680 ** ELT signals an error of type TYPE-ERROR when the index argument
1681 is not a valid sequence index;
1682 ** LOOP signals (at macroexpansion time) an error of type
1683 PROGRAM-ERROR when duplicate variable names are found;
1684 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
1685 ** FUNCALL of special-operators now cause an error of type
1687 ** PSETQ now works as required in the presence of side-effecting
1688 symbol-macro places;
1689 ** NCONC accepts any object as its last argument;
1690 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
1692 ** loop-for-as-package does not require a package to be explicitely
1694 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
1696 * fixed bug 166: compiler preserves "there is a way to go"
1697 invariant when deleting code.
1698 * fixed bug 172: macro lambda lists with required arguments after
1699 &REST arguments now cause an error to be signalled. (thanks to
1701 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
1702 bug. (thanks to Matthew Danish)
1703 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
1705 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
1706 arguments are lexically rebound. (thanks to Gerd Moellmann and
1708 * fixed bug 194: error messages are now more informative when there
1709 is no primary method applicable in a call to a generic
1710 function. (thanks to Gerd Moellmann)
1711 * fixed bug in command line argument checking (thanks to Julian
1713 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
1714 (thanks to Matthew Danish)
1715 * incremented fasl file version number, because of the
1716 SXHASH-related changes in the layout of CLOS data structures
1718 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
1719 * minor incompatible change: The runtime (the Unix executable named
1720 "sbcl") is now much pickier about the .core files it will load.
1721 Essentially it now requires .core files to descend from the same
1722 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
1723 as the runtime does. (The intent is to prevent the crashes which
1724 can occur, and which can even be reported as mysterious failures,
1725 when people patch the sources or change the build parameters
1726 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
1727 sbcl and .core files.)
1728 * fixed bug: VALUES-LIST is no longer optimized away.
1729 * fixed bug 142: The FFI conversion of C string values to Lisp
1730 string values no longer conses excessively. (thanks to Nathan
1731 Froyd porting Raymond Toy's fix to CMU CL)
1732 * began to systematize and improve MOP conformance in PCL (thanks to
1733 Nathan Froyd, Gerd Moellman and Pierre Mai):
1734 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
1736 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
1737 ** FINALIZE-INHERITANCE is now called on class finalization;
1738 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
1739 argument precedence order.
1740 * fixed bug 202: The compiler no longer fails on functions whose
1741 derived types contradict their declared type.
1742 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
1743 so it can be non-toplevel.
1744 * The fasl file version number has changed (because of the new
1745 implementation of DEFMACRO).
1746 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
1747 safe code, that any length requirement by their type-specifier
1748 argument is valid. The exceptions to this are described in bug
1750 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
1751 functions now check the types of their inputs as required by ANSI.
1752 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
1753 introduced symbol is DECLAREd to be SPECIAL.
1754 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
1755 * fixed bug: :COUNT argument to sequence functions may be negative
1756 * fixed bug: body of DO-SYMBOLS may contain declarations
1757 * fixed bug: PUSHNEW now evaluates its arguments from left to right
1758 (reported by Paul F. Dietz, fixed by Gerd Moellman)
1759 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
1760 symbol macro only once
1761 * fixed printing of call frame when argument list is unavailable
1762 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
1763 * compiler no longer signals WARNING on unknown keyword
1766 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
1767 * A beta-quality port to the mips architecture running Linux,
1768 based on the old CMUCL backend, has been made. It has been tested
1769 on a big-endian kernel, and works sufficiently well to be able to
1770 rebuild itself; it has not been tested in little-endian mode.
1771 * fixed an inconsistency between gencgc.c and purify.c which made
1772 dumping/loading .core files unreliable
1773 * fixed bug 120a: The compiler now deals correctly with IFs where
1774 the consequent is the same as the alternative, instead of
1775 misderiving the return type. (thanks to Alexey Dejneka)
1776 * fixed bug 113: Logical pathnames are now dumpable (the logical
1777 host is resolved at load-time, throwing an error if it is not
1779 * fixed bug 174: FORMAT's error message is slightly clearer when a
1780 non-printing character is used in a format directive.
1781 * fixed several bugs in compiler checking of type declarations, i.e.
1782 violations of the Python "declarations are assertions" principle
1783 (thanks to Alexey Dejneka)
1784 * fixed several bugs in PCL's error checking (thanks to Gerd
1786 * fixed bug: printing of FILE-ERROR (thanks to Antonio
1788 * fixed bug in compilation of functions as first class values
1789 (thanks to Antonio Martinez-Shotton)
1790 * The compiler's handling TYPE-ERRORs which it can prove will
1791 inevitably happen at runtime has been cleaned up and corrected
1792 in several ways. (thanks to Alexey Dejneka)
1793 * improved argument type checking for various basic arithmetic
1794 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
1795 lavished on them in the past that they can be compiled in many
1796 ways in different special cases
1797 * fixed bug 181: compiler checks validity of user supplied type
1799 * cleaned up code flushing in optimization: Function calls which
1800 should signal errors for safety purposes (e.g. which ANSI says
1801 should signal errors when their arguments are of incorrect type)
1802 are no longer optimized away.
1803 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
1804 * incremented fasl file version number, because changes in the
1805 implementation of sequence functions like COERCE caused
1806 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
1807 in old inline expansions) to become undefined. (Actually these
1808 changes were later undone, so we might very well be binary
1809 compatible with 0.7.7 after all, but leaving the version number
1810 incremented seemed like the simplest and most conservative
1813 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
1814 * An alpha-quality port to the parisc architecture running Linux,
1815 based on the old CMUCL backend, has been made. This, even more so
1816 than the other backends, should be considered still a work in
1817 progress; known problems include that the Linux kernel in 64-bit
1818 mode does not propagate the correct sigcontext structure to
1819 userspace, and consequently SBCL on a parisc64 kernel will not
1821 * fixed bug 189: The compiler now respects NOTINLINE declarations for
1822 functions declared in FLET and LABELS. (I.e. "LET conversion" is
1823 suppressed.) Also now that the compiler is looking at declarations
1824 in the environment, it checks optimization declarations as well,
1825 and suppresses inlining when (> DEBUG SPEED).
1826 * More fixes have been made to treatment of floating point exception
1827 treatment and other Unix signals. In particular, floating point
1828 exceptions no longer cause Bus errors on the SPARC/Linux platform.
1829 * The detection and handling of control stack exhaustion (infinite
1830 or very deeply nested recursion) has changed. Stack exhaustion
1831 detection is now done by write-protecting pages at the OS level
1832 and applies at all optimization settings; when found, a
1833 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
1834 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
1835 be caught using IGNORE-ERRORS.
1836 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
1837 correctly when transforming recursive LABELS functions to LETs.
1838 (thanks to Alexey Dejneka)
1839 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
1840 that are names of constants or global variables.
1841 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
1842 alien routines with docstrings.
1843 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
1844 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
1846 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
1847 (thanks to Eric Marsden)
1848 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
1849 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
1850 * Bug fix: The SPARC backend can now compile functions involving
1851 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
1852 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
1853 to a functions expecting a PATHNAME-DESIGNATOR.
1854 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
1855 lambda lists. (thanks to Alexey Dejneka)
1856 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
1857 functions so that EXPORTing the name of the class doesn't cause
1858 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
1859 to Antonio Martinez for reporting this)
1860 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
1861 constant-folded without failing an assertion. (thanks to Einar
1862 Floystad Dorum for reporting this)
1863 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
1864 types are now dealt with more correctly by the compiler.
1865 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
1866 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
1867 behaviour analogous to RENAME-FILE. This puts its behaviour more
1868 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
1870 * The fasl file version number has changed again. (because of the
1871 bug fix involving the names of PCL MAKE-INSTANCE functions)
1873 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
1874 * bug fix: Floating point exceptions are treated much more
1875 consistently on the x86/Linux and PPC/Linux platforms.
1876 * Array initialization with :INITIAL-ELEMENT is now much faster for
1877 cases when the compiler cannot open code the array creation, but
1878 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
1879 array accesses have also seen a speed increase.
1880 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
1881 specified. (This was at the root of some bad interactions between
1882 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
1884 * bug fix: Internal error arguments for undefined functions are now
1885 computed correctly on the PPC/Linux platform.
1886 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
1887 Raymond Toy's patch for CMU CL)
1888 * Support for the Solaris 9 operating environment has been included
1889 (thanks to Daniel Merritt)
1890 * A very ugly but hopefully complete draft of the missing FFI chapter
1891 of the manual has been created by reformatting the corresponding
1892 CMU CL manual chapter into (currently very ugly and incoherent)
1893 DocBook and bringing it up to date for SBCL behavior. Thus, the
1894 manual is now essentially complete, at least by my extreme
1895 once-and-only-once standards, whereby it's acceptable to refer to
1896 the doc strings of SB-EXT functions as the primary documentation.
1897 * The fasl file version number has changed again, due to cleanup of
1898 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
1899 is no longer a static symbol.)
1901 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
1902 * SBCL now builds with OpenMCL (version 0.12) as the
1903 cross-compilation host; also, more progress has been made toward
1904 bootstrapping under CLISP.
1905 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
1907 * bug 158 fixed: The compiler can now deal with integer loop
1908 increments different from 1; fixing this turned out also to fix
1910 * bug 169 fixed: no more bogus warnings about using lexical bindings
1911 despite the presence of perfectly good SPECIAL declarations (thanks
1912 to David Lichteblau)
1913 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
1914 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
1915 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
1917 * bug 180 fixed: Method combination specifications no longer ignore
1918 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
1919 * bug fix: Structure type predicate functions now check their argument
1920 count as they should.
1921 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
1922 correctly. (thanks to Pierre Mai)
1923 * minor incompatible change: The --noprogrammer option is deprecated
1924 in favor of the new --disable-debugger option, which is very similar.
1925 (The major difference is that it takes effect at a slightly different
1926 time at startup, causing handling of errors in --sysinit and
1927 --userinit files will be affected differently.) The
1928 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
1929 been added to allow this functionality to be controlled from ordinary
1930 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
1931 maintainers, who might want to run non-interactive scripts to
1932 build SBCL cores which will later be used interactively.)
1933 * minor incompatible change: The LOAD function no longer, when given
1934 a wild pathname to load, loads all files matching that pathname.
1935 Instead, an error of type FILE-ERROR is signalled.
1937 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
1938 * bug 147 fixed: The compiler preserves its block link/count
1939 invariants more correctly now so that it doesn't crash. (thanks
1941 * Dynamic loading of object files in OpenBSD is now supported. (thanks
1943 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
1944 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
1945 no-value-for-this-character as NIL (as specified by ANSI).
1946 * HOST-NAMESTRING on physical pathnames now returns a string that is
1947 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
1948 (thanks to Christophe Rhodes)
1949 * The Alpha port handles icache flushing more correctly. (thanks to
1951 * More progress has been made toward bootstrapping under CLISP. (thanks
1952 to Christophe Rhodes)
1953 * The fasl file format has changed again, because dynamic loading
1954 on OpenBSD (which has non-ELF object files) motivated some cleanups
1955 in the way that foreign symbols are transformed and passed around.
1956 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
1957 is no longer treated as whitespace by the reader, but instead as
1958 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
1959 |A
\7fB|, instead of A as it used to.
1961 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
1962 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
1963 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
1964 * SBCL now runs on the PPC archtiecture under Linux. It actually did
1965 this as of 0.7.1.45, but was left out of the previous news section
1966 (thanks to Dan Barlow)
1967 * SBCL now runs on the Solaris operating system on SPARC architectures
1968 (thanks to Christophe Rhodes's port of the CMUCL runtime)
1969 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
1970 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
1971 * SPARC backend cleanups, allowing builds of cores optimized for V8
1972 and V9 SPARCS, and also emission of code targeted to a particular
1973 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
1975 * SBCL is closer to bootstrapping under CLISP, thanks to various
1976 fixes by Christophe Rhodes.
1977 * The fasl file format has changed again, to allow the compiler's
1978 INFO database to support symbol macros.
1979 * The user manual (in doc/) is formatted into HTML more nicely.
1980 (thanks to coreythomas)
1981 * The system is smarter about SUBTYPEP relationships, especially
1982 those involving NOT types (including types such as ATOM which are
1983 represented internally using NOT types). Thus SUBTYPEP is less
1984 likely to return (VALUES NIL NIL) in general, and in particular
1985 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
1987 * The fasl file format has changed again, because the internal
1988 representation of types now includes a new slot to support the new
1989 SUBTYPEP-of-NOT-types logic.
1990 * (not a change in the main branch of SBCL, but a related prototype
1991 which can hopefully be merged into the main branch of SBCL in the
1992 future:) Brian Spilsbury has produced a Unicode-enabled variant of
1993 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
1994 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
1995 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
1996 dispatch macro character combinations. (thanks to Alexey Dejneka)
1997 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
1998 that superficially look like logical namestrings correctly.
1999 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2001 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2002 default supplied-p) for &optional and &key arguments. (thanks to
2005 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2006 * incompatible change: The compiler is now less aggressive about
2007 tail call optimization, doing it only when (> SPACE DEBUG) or
2008 (> SPEED DEBUG). (This is an incompatible change because there are
2009 programs which relied on the old CMU-CL-style behavior to optimize
2010 away their unbounded recursion which will now die of stack overflow.)
2011 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2012 for non-GENCGC systems has been increased to 20M (since that
2013 seems much closer to the likely performance optimum for modern
2014 systems than the old 4M value was)
2015 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2016 and *DEBUG-PRINT-LEVEL*
2017 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2018 of CMU CL's support for SPARC, and various endianness and other
2019 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2020 * new syntactic sugar for the Unix command line: --load foo.bar is now
2021 an alternate notation for --eval '(load "foo.bar")'.
2023 ** The system now detects stack overflow and handles it gracefully,
2024 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2025 optimization settings. (This is a good thing in general, and
2026 its introduction in this version should be particularly timely
2027 for anyone whose code fails because of suppression of tail
2029 ** The system now hunts for the C variable "environ" in a more
2030 devious way, to avoid segfaults when the C library version differs
2031 between compile time and run time. (thanks to Christophe Rhodes)
2032 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2033 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2034 ** The compiler no longer issues bogus style warnings for undefined
2035 classes in the same source file as the DEFCLASSes which defined
2036 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2038 ** fixes in CONDITION class precedence list for undefined function
2039 errors (thanks to Alexei Dejneka)
2040 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2041 correctly. (thanks to Dan Barlow)
2042 ** portability fixes aiming at bootstrapping under CLISP (thanks
2043 to Dave McDonald and Christophe Rhodes)
2044 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2045 ** fixes in type translation and and type inference (thanks to
2047 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2048 ** various fixes in the new ports (thanks to Dan Barlow)
2049 * several changes related to debugging:
2050 ** suppression of tail recursion, as noted above
2051 ** stack overflow detection, as noted above
2052 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2053 is now the default. (For some time encapsulation has been more
2054 reliable than the breakpoint-based :ENCAPSULATE NIL
2055 implementation, at least on X86 systems; and I just noticed that
2056 encapsulation also seems closer to the spirit of the ANSI
2059 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
2061 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
2062 up properly again. (There was a packaging bug in 0.7.0 which
2063 left their definitions in SB-SYS::LOAD-FOREIGN and
2064 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
2065 vital for most things which interface to C-level interfaces,
2066 like extensions working with sockets or databases or
2067 Perl-compatible regexes or whatever, and the need to fix
2068 this bug is the main reason that 0.7.1 was released so
2070 ** DEFGENERIC is now choosier about the methods it redefines, so that
2071 reLOADing a previously-LOADed file containing DEFGENERICs does
2072 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
2073 cycle now works as it should. (thanks to Alexey Dejneka)
2074 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
2075 fixed by Christophe Rhodes. (He actually submitted this patch
2076 months ago, and I delayed until after 0.7.0.)
2077 ** Bug 111 (internal compiler confusion about runtime checks on
2078 FUNCTION types) was fixed by Alexey Dejneka.
2079 * Some internal cleanups (getting rid of variables which aren't
2080 needed now that the byte interpreter is gone) caused the fasl
2081 file format number to change again.
2083 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
2084 * major incompatible change: The default fasl file extension, i.e. the
2085 default extension for files produced by COMPILE-FILE, has changed
2086 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
2088 ** There are many changes in the implementation of the compiler.
2089 SBCL is now essentially a compiler-only implementation of ANSI
2090 Common Lisp. EVAL still "interprets" a few special cases, but
2091 almost all the interesting cases are handled by creating
2092 a LAMBDA expression, calling COMPILE on it, then calling
2093 FUNCALL on the result.
2094 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
2095 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
2096 Since the code is newer, there might still be some new bugs
2097 (though not as many as before Martin Atzmueller's fixes:-). But
2098 the new code is substantially simpler and clearer, and hopefully
2099 any remaining bugs will be simpler, less fundamental, and more
2100 fixable then the bugs in the old code.
2101 ** The revised compiler is still a little unsteady on its feet.
2103 *** The debugging information it produces (particularly the names
2104 of FUNCTION objects) is sometimes much less useful than what
2105 the old compiler produced.
2106 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
2107 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
2108 within a MACROLET) has been temporarily weakened.
2109 ** There are new compiler optimizations for various functions:
2110 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
2111 FIND-IF-NOT, POSITION-IF-NOT, and FILL
2112 *** the math functions TRUNCATE, FLOOR, and CEILING
2113 *** the function-of-all-trades COERCE
2114 Mostly these should be transparent, but there's one
2115 potentially-annoying problem (bug 117): when the compiler
2116 inline-expands a function and does type analysis on the result,
2117 it can create control paths which have type mismatches, and
2118 when it can't prove that those control paths aren't taken,
2119 it will issue WARNINGs about the type mismatches. This is
2120 a particular problem in practice for the new sequence functions.
2121 It's not clear how this should be fixed, and for now, a
2122 workaround is given in the entry for 117 in the BUGS file.
2123 ** (Because of the interaction between the two previous items --
2124 occasional inlining problems and new inline expansions -- some
2125 of the new sequence function optimizations won't really kick in
2126 completely until debugging information, and then inlining, are
2127 straightened out in some future version.)
2128 * minor incompatible changes:
2129 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
2130 DIRECTORY no longer implicitly promotes NIL slots of its
2131 pathname argument to :WILD. In particular, when you ask for the
2132 contents of a directory (which you used to be able to do without
2133 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
2134 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
2135 ** changes in behavior that ANSI explicitly defines to be
2136 implementation dependent:
2137 *** The new compiler-only implementation still conforms with ANSI,
2138 but acts a little different than before. Besides the obvious
2139 changes in performance tradeoffs (that the cost per form passed
2140 to EVAL has gone up, and the cost per form executed by EVAL
2141 has gone down), the behavior of the system changes a little
2142 because there are no longer any interpreted function objects.
2143 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
2144 e.g. doing COMPILE on the output of interactive DEFUN is
2146 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
2148 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
2149 has changed from (:CL) to NIL.
2150 *** The CHAR-NAME of unprintable ASCII characters which, unlike
2151 e.g. #\Newline and #\Tab, don't have names specified in the
2152 ANSI Common Lisp standard, is now based on their ASCII symbolic
2153 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
2154 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
2155 are no longer used for output.
2156 ** changes in internal implementation constants:
2157 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
2158 4 million. (If your application spends a lot of time GCing and
2159 you have a lot of RAM, you might want to experiment with
2160 increasing it even more.)
2161 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
2162 However, almost all old code should still continue to work without
2163 immediate update, as SB-C-CALL is now a (deprecated) nickname
2165 ** Old operator names in the style DEF-FOO are now deprecated in
2166 favor of new corresponding names DEFINE-FOO, for consistency with
2167 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
2168 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
2169 internal symbols, but a few supported extensions like
2170 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
2171 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
2172 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
2173 etc. as you get deeper into recursive calls to the debugger
2174 command loop, instead of the old "5]", "5]]", "5]]]"
2175 sequence. (I was motivated to do this when squabbles between
2176 ILISP and SBCL left me very deeply nested in the debugger. In the
2177 short term, this change will probably provoke more ILISP/SBCL
2178 squabbles, but hopefully it will be an improvement in the long run.)
2179 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
2180 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
2181 function, since declaiming return types involving aliens is
2182 (1) annoyingly messy to do by hand and (2) vital to efficient
2183 compilation of code which calls such functions.
2184 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
2185 longer reexported by the SB-EXT package. They're solely useful
2186 for alien code, so it seems more logical that you should get
2187 them from the SB-ALIEN package, not in SB-EXT.
2188 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
2189 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
2190 features. Instead, the code that they used to control is always
2191 built into the system.
2192 * many other bug fixes
2193 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
2194 advantage of the new EVAL-WHEN stuff and to clean them up in
2195 general, and they are now more ANSI-compliant in a number of
2196 ways. Martin Atzmueller is responsible for a lot of this.
2197 ** Besides the cleanups discussed above, Martin Atzmueller fixed
2199 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
2200 *** correct ERROR type for various file operations
2201 *** some fixes for Lisp streams
2202 *** DEFMETHOD syntax checking
2203 *** changing old weird representation of debug information as
2204 strings (which, among their other deficiencies, don't transform
2205 correctly when you rename packages, and don't change their
2206 print representation when you change things like *PACKAGE*
2207 and *PRINT-LENGTH*) to symbols and lists of symbols
2208 He also made several improvements and fixed several bugs in DESCRIBE.
2209 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
2211 *** misbehavior of WRITE-STRING/WRITE-LINE
2212 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
2213 and several other LOOP problems as well
2214 *** DIRECTORY when similar filenames are present
2215 *** DEFGENERIC with :METHOD options
2216 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
2217 *** bug in the optimization of ARRAY-ELEMENT-TYPE
2218 *** argument ordering in FIND with :TEST option
2219 *** mishandled package designator argument in APROPOS-LIST
2220 *** various problems in the backquote readmacro
2221 *** a bug in APROPOS
2222 *** probably some others that I'm not describing very well here,
2223 since the CVS log documents them by reference to sbcl-devel
2224 messages, and the SourceForge archives aren't working well.:-(
2225 ** Dan Barlow improved the Alpha port (and is making progress on the
2226 PPC port, for those of you who think different).
2227 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
2228 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
2229 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
2230 continues to work on the SPARC port (for those of you in a position
2231 to look down upon our little PC-compatible boxes from a great height).
2232 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
2233 and uses that copy, rather than the current dynamic value, when
2234 it's trying to decide whether to truncate output. Thus e.g.
2235 (let ((*print-lines* 50))
2236 (pprint-logical-block (stream nil)
2238 (let ((*print-lines* 8))
2239 (print (aref possiblybigthings i) stream)))))
2240 should now truncate the logical block only at 50 lines, instead of
2241 often truncating it at 8 lines, as it did before.
2242 * The doc/cmucl/ directory, containing old CMU CL documentation
2243 from the time of the fork, is no longer part of the base system.
2244 SourceForge has shut down its anonymous FTP service, and with it
2245 my original plan for distributing the old CMU CL documentation
2246 there. For now, if you need these files you can download an old
2247 SBCL source release and extract them from it.
2248 * The fasl file version number changed again, for dozens of reasons,
2249 some of which are apparent above.
2251 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
2252 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
2253 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
2254 patch, so that DISASSEMBLE output is much nicer.
2255 * The code in the SB-PROFILE package now seems reasonably stable.
2256 I still haven't decided what the final interface should look like
2257 (I'd like PROFILE to interact cleanly with TRACE, since both
2258 facilities use function encapsulation) but if you have a need
2259 for profiling now, you can probably use it successfully with
2260 the current CMU-CL-style interface.
2261 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
2262 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
2263 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
2264 link now returns the dangling link itself, and for similar
2265 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
2266 link itself. (In these cases the old code signalled an error and
2267 looped endlessly, respectively.) Thus, DIRECTORY now works even
2268 in the presence of dangling and cyclic symbolic links.
2269 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
2270 is now a supported extension again, since the consensus on
2271 sbcl-devel was that it can be useful for ordinary development
2272 work, not just for debugging SBCL itself.
2273 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
2274 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
2275 that currently-defined functions might be redefined later with
2276 different return types.
2277 * Hash tables can be printed readably, as inspired by CMU CL code
2278 of Eric Marsden and SBCL code of Martin Atzmueller.
2279 * better error handling in CLOS method combination, thanks to
2280 Martin Atzmueller porting Pierre Mai's CMU CL patches
2281 * more overflow fixes for >16Mbyte I/O buffers
2282 * A bug in READ has been fixed, so that now a single Ctrl-D
2283 character suffices to cause end-of-file on character streams.
2284 In particular, now you only need one Ctrl-D at the command
2285 line (not two) to exit SBCL.
2286 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
2288 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
2289 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
2290 does the right thing.
2291 * The implementation of some type tests, especially for CONDITION
2292 types, is now tidier and maybe faster, due to CMU CL code
2293 originally by Douglas Crosher, ported by Martin Atzmueller.
2294 * Some math functions have been fixed, and there are new
2295 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
2296 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
2297 * (There are also some new optimizers in contrib/*-extras.lisp. Those
2298 aren't built into sbcl-0.6.13, but are a sneak preview of what's
2299 likely to be built into sbcl-0.7.0.)
2300 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2301 CL, ported to SBCL by Martin Atzmueller)
2302 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2303 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2304 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2305 * There's a new slam.sh hack to shorten the edit/compile/debug
2306 cycle for low-level changes to SBCL itself, and a new
2307 :SB-AFTER-XC-CORE target feature to control the generation of
2308 the after-xc.core file needed by slam.sh.
2309 * minor incompatible change: The ENTRY-POINTS &KEY argument to
2310 COMPILE-FILE is no longer supported, so that now every function
2311 gets an entry point, so that block compilation looks a little
2312 more like the plain vanilla ANSI section 3.2.2.3 scheme.
2313 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
2314 returns the number of bytes consed since the system started,
2315 rather than the number consed since the first time the function
2316 was called. (The new definition parallels ANSI functions like
2317 CL:GET-INTERNAL-RUN-TIME.)
2318 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
2319 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
2320 supported. Now DIRECTORY always does the abstract Common-Lisp-y
2321 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
2322 * Fasl file version numbers are now independent of the target CPU,
2323 since historically most system changes which required version
2324 number changes have affected all CPUs equally. Similarly,
2325 the byte fasl file version is now equal to the ordinary
2328 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
2329 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
2330 is no longer recognized. I apologize for this, because it was
2331 listed in SB-EXT as a supported extension, but I found that
2332 its existing behavior was poorly specified, as well as incorrectly
2333 specified, and it looked like too much of a mess to straighten it
2334 out. I have enough on my hands trying to get ANSI stuff to work..
2335 * many patches ported from CMU CL by Martin Atzmueller, with
2336 half a dozen bug fixes in pretty-printing and the debugger, and
2337 half a dozen others elsewhere
2338 * fixed bug 13: Floating point infinities are now supported again.
2339 They might still be a little bit flaky, but thanks to bug reports
2340 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
2341 as flaky as they were.
2342 * The --noprogrammer command line option is now supported. (Its
2343 behavior is slightly different in detail from what the old man
2344 page claimed it would do, but it's still appropriate under the
2345 same circumstances that the man page talks about.)
2346 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
2347 are now supported, and enabled by default. Thus, the compiler can
2348 handle many floating point and complex operations much less
2349 inefficiently. (Thus e.g. you can implement a complex FFT
2351 * The compiler now detects type mismatches between DECLAIM FTYPE
2352 and DEFUN better, and implements CHECK-TYPE more correctly, and
2353 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
2354 thanks to patches from Martin Atzmueller.
2355 * various fixes to make the cross-compiler more portable to
2356 ANSI-conforming-but-different cross-compilation hosts (notably
2357 Lispworks for Windows, following bug reports from Arthur Lemmens)
2358 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
2359 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
2360 fixed thanks to Pierre Mai's CMU CL patches.
2361 * fixes to keep the system from overflowing internal counters when
2362 it tries to use i/o buffers larger than 16M bytes
2363 * fixed bug 45a: Various internal functions required to support
2364 complex special functions have been merged from CMU CL sources.
2365 (When I was first setting up SBCL, I misunderstood a compile-time
2366 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
2367 * improved support for type intersection and union, fixing bug 12
2368 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
2369 more obscure bugs as well
2370 * some steps toward byte-compiling non-performance-critical
2371 parts of the system, courtesy of patches from Martin Atzmueller
2372 * Christophe Rhodes has made some debian packages of sbcl at
2373 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
2374 From his sbcl-devel e-mail of 2001-04-08 they're not completely
2375 stable, but are nonetheless usable. When he's ready, I'd be happy
2376 to add them to the SourceForge "File Releases" section. (And if
2377 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
2378 * new fasl file format version number (because of changes in
2379 internal representation of (OR ..) types to accommodate the new
2380 support for (AND ..) types, among other things)
2382 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
2383 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
2385 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
2387 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
2388 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
2389 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
2390 * DESCRIBE now works on structure objects again.
2391 * Most function call argument type mismatches are now handled as
2392 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
2393 know whether the function will be redefined before the call is
2394 executed. (The compiler could flag local calls with full WARNINGs,
2395 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
2396 it doesn't keep track of enough information to know whether calls
2397 are local in this sense.)
2398 * Compiler output is now more verbose, with messages truncated
2399 later than before. (There should be some supported way for users
2400 to override the default verbosity, but I haven't decided how to
2401 provide it yet, so this behavior is still controlled by the internal
2402 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
2403 src/compiler/ir1util.lisp.)
2404 * Fasl file format version numbers have increased again, because
2405 support for the Gray streams extension changes the layout of the
2406 system's STREAM objects.
2407 * The Gray subclassable streams extension now works, thanks to a
2408 patch from Martin Atzmueller.
2409 * The full LOAD-FOREIGN extension (not just the primitive
2410 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
2411 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
2412 but like most other programs, it defaults to copying the Unix
2413 environment from the original process instead of starting the
2414 new process in an empty environment.
2415 * Extensions which manipulate the Unix environment now support
2416 an :ENVIRONMENT keyword option which doesn't smash case or
2417 do other bad things. The CMU-CL-style :ENV option is retained
2418 for porting convenience.
2419 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
2420 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
2422 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
2424 * A patch from Martin Atzmueller seems to have solved the SIGINT
2425 problem, and as far as we know, signal-handling now works cleanly.
2426 (If you find any new bugs, please report them!)
2427 * The system no longer defaults Lisp source file names to types
2428 ".l", ".cl", or ".lsp", but only to ".lisp".
2429 * The compiler no longer uses special default file extensions for
2430 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
2431 seems to expect a single default extension for all compiled code,
2432 and there's no compelling reason to try to stretch the standard
2433 to allow two different extensions.) Instead, byte-compiled files
2434 default to the same extension as native-compiled files.
2435 * Fasl file format version numbers have increased again, because
2436 a rearrangement of internal implementation packages made some
2437 dumped symbols in old fasl files unreadable in new cores.
2438 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
2439 many fewer weird special cases.
2440 * Bug #17 (differing COMPILE-FILE behavior between logical and
2441 physical pathnames) has been fixed, and some related misbehavior too,
2442 thanks to a patch from Martin Atzmueller.
2443 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
2444 by Tim Moore, ported to SBCL by Martin Atzmueller.
2445 * Martin Atzmueller fixed several filesystem-related problems,
2446 including bug #36, in part by porting CMU CL patches, which were
2447 written in part by Paul Werkowski.
2448 * More compiler warnings in src/runtime/ are gone, thanks to
2449 more patches from Martin Atzmueller.
2450 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
2453 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
2455 * DESCRIBE now works on CONDITION objects.
2456 * The debugger now handles errors which arise when trying to print
2457 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
2459 * The build system now uses an additional file, customize-target-features.lisp,
2460 to allow local modifications to the target *FEATURES* list. (The point of
2461 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
2462 debugging features enabled, without having to worry about propagating it
2463 into everyone's system when I do a "cvs update".) When no
2464 customize-target-features.lisp file exists, the target *FEATURES* list
2465 should be constructed the same way as before.
2466 * fixed bugs in DEFCONSTANT ANSI-compatibility:
2467 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
2468 warn about behavior which is undefined under the ANSI spec. Note: This
2469 is specified by ANSI, but it's not very popular with programmers.
2470 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
2471 macro in the SBCL sources for an example of a workaround which you
2472 might use to make portable ANSI-standard code which does what you want.
2473 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
2474 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
2475 when it's used as a non-toplevel form. (This is required in order
2476 to implement the DEFCONSTANT-EQX macro.)
2477 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
2478 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
2479 funny things, due to bugs in the implementation of EVAL-WHEN
2480 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
2481 non-toplevel DEFCONSTANTs are uncommon.)
2482 * The core file version number and fasl file version number have been
2483 incremented, because the old noncompliant DEFCONSTANT behavior involved
2484 calling functions which no longer exist, and because I also took the
2485 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
2486 * fixed bug 1 (error handling before read-eval-print loop starts), and
2487 redid debugger restarts and related debugger commands somewhat while
2489 ** The QUIT debugger command is gone, since it did something
2490 rather different than the SB-EXT:QUIT command, and since it never
2491 worked properly outside the main toplevel read/eval/print loop.
2492 Invoking the new TOPLEVEL restart provides the same functionality.
2493 ** The GO debugger command is also gone, since you can just invoke
2494 the CONTINUE restart directly instead.
2495 ** The TOP debugger command is also gone, since it's redundant with the
2496 FRAME 0 command, and since it interfered with abbreviations for the
2498 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
2500 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
2501 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
2502 some porting work by Martin Atzmueller)
2503 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
2504 with a boatload of patches which he ported to SBCL. Now that those
2506 ** The system tries to make sure that its low-priority messages
2507 are prefixed by semicolons, to help people who like to use
2508 syntax highlighting in their ILISP buffer. (This patch
2509 was originally due to Raymond Toy.)
2510 ** The system now optimizes INTEGER-LENGTH better, thanks to more
2511 patches originally written by Raymond Toy.
2512 ** The compiler understands coercion between single-value and
2513 multiple-VALUES type expressions better, getting rid of some very
2514 weird behavior, thanks to patches originally by Robert MacLachlan
2515 and Douglas Crosher.
2516 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
2517 lambda lists, thanks to a patch originally by Pierre Mai.
2518 ** The system no longer bogusly warns about "abbreviated type
2520 ** The compiler gets less confused by inlining and RETURN-FROM,
2521 thanks to some patches originally by Tim Moore.
2522 ** The system no longer hangs when dumping circular lists to fasl
2523 files, thanks to a patch originally from Douglas Crosher.
2524 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
2525 undefined function error.
2526 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
2527 in structure slot initforms) for now, documented workaround instead:-|
2528 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
2529 * fixed bug 5: added stubs for various Gray stream functions called
2530 in the not-a-CL:STREAM case, so that even when Gray streams aren't
2531 installed, at least appropriate type errors are generated
2532 * fixed bug 8: better reporting of various PROGRAM-ERRORs
2533 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
2534 consistently in DEFMETHOD forms.
2535 * removed bug 21 from BUGS, since Martin Atzmueller points out that
2536 it doesn't seem to affect SBCL after all
2537 * The C runtime system now builds with better optimization and many
2538 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
2540 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
2542 * The system is now under CVS at SourceForge (instead of the
2543 CVS repository on my home machine).
2544 * The new signal handling code has been tweaked to treat register
2545 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
2546 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
2547 downstream, e.g. in debug-int.lisp, has implicit dependencies
2548 on the unsignedness of integer representation of machine words,
2549 and that caused the system to bomb out with infinite regress
2550 when trying to recover from type errors involving signed values,
2551 e.g. (BUTLAST '(1 2 3) -1).)
2552 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
2553 (This was one of the bugs Peter Van Eynde reported back in July.)
2554 * The system now uses code inspired by Colin Walters' O(N)
2555 implementation of MAP (from the cmucl-imp@cons.org mailing
2556 list, 2 September 2000) when it can't use a DEFTRANSFORM to
2557 inline the MAP operation, and there is more than one
2558 sequence argument to the MAP call (so that it can't just
2559 do ETYPECASE once and for all based on the type of the
2560 single sequence argument). (The old non-inline implementation
2561 of the general M-argument sequence-of-length-N case required
2562 O(M*N*N) time when any of the sequence arguments were LISTs.)
2563 * The QUIT :UNIX-CODE keyword argument has been renamed to
2564 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
2565 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
2567 * Raymond Wiker's patches to port dynamic loading from Linux to
2568 FreeBSD have been added.
2569 * The BUGS file is now more nearly up to date, thanks in large part
2570 to Martin Atzmueller's review of it.
2571 * The debugger now flushes standard output streams before it begins
2572 its output ("debugger invoked" and so forth).
2573 * The core version number and fasl file version number have both
2574 been incremented, because of incompatible changes in the layout
2576 * FINISH-OUTPUT is now called more consistently on QUIT. (It
2577 used to not be called for a saved Lisp image.)
2578 * Martin Atzmueller's version of a patch to fix a compiler crash,
2579 as posted on sbcl-devel 13 September 2000, has been installed.
2580 * Instead of installing Martin Atzmueller's patch for the
2581 compiler transform for SUBSEQ, I deleted the compiler transform,
2582 and transforms for some similar consing operations.
2583 * A bug in signal handling which kept TRACE from working on OpenBSD
2585 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
2586 away by constant folding
2587 * The system now defines its address space constants in one place
2588 (in the Lisp sources), and propagates them automatically elsewhere
2589 (through GENESIS and the sbcl.h file). Therefore, patching the
2590 address map is less unnecessarily tedious and error-prone. The
2591 Lisp names of address space constants have also been systematized.
2592 * CVS tags like dollar-Header-dollar have been removed from
2593 the sources, because they have never saved me trouble and
2594 they've been source of trouble working with patches and other
2595 diff-related operations.
2596 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
2597 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
2599 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
2601 * The system has been ported to OpenBSD.
2602 * The system now compiles with a simple "sh make.sh" on the systems
2603 that it's supported on. I.e., now you no longer need to tweak
2604 text in the target-features.lisp-expr and symlinks in src/runtime/
2605 by hand, the make.sh takes care of it for you.
2606 * The system is no longer so grossly inefficient when compiling code
2607 involving vectors implemented as general (not simple) vectors (VECTOR T),
2608 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
2609 which dares to use the various sequence functions on non-simple
2610 vectors, takes less of a performance hit.
2611 * There is now a primitive type predicate VECTOR-T-P
2612 to test for the (VECTOR T) type, so that e.g.
2613 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
2614 can now be compiled with some semblance of efficiency. (The old code
2615 turned the type declaration into a full call to %TYPEP at runtime!)
2616 * AREF on (VECTOR T) is still not fast, since it's still compiled
2617 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
2618 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
2619 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
2620 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
2621 without making full calls to SUBTYPEP at runtime.
2622 (Some analogous efficiency issues for non-simple vectors specialized to
2623 element types other than T, or for non-simple multidimensional arrays,
2624 have not been addressed. They could almost certainly be handled the
2625 same way if anyone is motivated to do so.)
2626 * The changes in array handling break binary compatibility, so
2627 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
2628 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
2629 instead of (VALUES T T).
2630 * By following the instructions that Dan Barlow posted to sbcl-devel
2631 on 2 July 2000, I was able to enable primitive dynamic object
2632 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
2633 functionality is not implemented (since it calls ld to resolve
2634 library references automatically, requiring RUN-PROGRAM for its
2635 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
2636 try to resolve library references) is now supported.
2637 * The system now flushes the standard output streams when it terminates,
2638 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
2639 them at several other probably-convenient times, e.g. in each pass of
2640 the toplevel read-eval-print loop, and after evaluating a form given
2641 as an "--eval" command-line option. (These changes were motivated by a
2642 discussion of stream flushing issues on cmucl-imp in August 2000.)
2643 * The source transform for TYPEP of array types no longer assumes
2644 that an array whose element type is a not-yet-defined type
2645 is implemented as an array of T, but instead punts, so that the
2646 type will be interpreted at runtime.
2647 * There is now some support for cross-compiling in make.sh: each of
2648 the phases of make.sh has its own script. (This should be transparent
2649 to people doing ordinary, non-cross-compile builds.)
2650 * Since my laptop doesn't have hundreds of megabytes of memory like
2651 my desktop machine, I became more motivated to do some items on
2652 my to-do list in order to reduce the size of the system a little:
2653 ** Arrange for various needed-only-at-cold-init things to be
2654 uninterned after cold init. To support this, those things have
2655 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
2656 symbols with such names are now uninterned after cold init).
2657 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
2658 fasl files for cold load.
2659 ** Remove the old compiler structure pooling code (which used to
2660 be conditional on the target feature :SB-ALLOC) completely.
2661 ** Redo the representation of some data in cold init to be more compact.
2662 (I also looked into supporting byte compiled code at bootstrap time,
2663 which would probably reduce the size of the system a lot, but that
2664 looked too complicated, so I punted for now.)
2665 * The maximum signal nesting depth in the src/runtime/ support code has
2666 been reduced from 4096 to 256. (I don't know any reason for the very
2667 large old value. If the new smaller value turns out to break something,
2668 I'll probably just bump it back up.)
2669 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
2671 * Many, many bugs reported by Peter Van Eynde have been added to
2672 the BUGS list; some have even been fixed.
2673 * While enabling dynamic object file loading, I tried to make the
2674 code easier to understand, renaming various functions and variables
2675 with less ambiguous names, and changing some function calling
2676 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
2677 * While trying to figure out how to do the OpenBSD port, I tried to
2678 clean up some of the code in src/runtime/. In particular, I dropped
2679 support for non-POSIX signal handling, added various comments,
2680 tweaked the code to reduce the number of compilation warnings, and
2681 renamed some files to increase consistency.
2682 * To support the new automatic configuration functionality in make.sh,
2683 the source file target-features.lisp-expr has been replaced with the
2684 source file base-target-features.lisp-expr and the machine-generated
2685 file local-target-features.lisp-expr.
2686 * fixed a stupid quoting error in make.sh so that using CMU CL
2687 "lisp -batch" as cross-compilation host works again
2689 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
2691 * DESCRIBE no longer tries to call itself recursively to describe
2692 bound/fbound values, so that it no longer fails on symbols which are
2693 bound to themselves (like keywords, T, and NIL).
2694 * DESCRIBE now works on generic functions.
2695 * The printer now prints less-screwed-up representations of closures
2696 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
2697 * A private symbol is used instead of the :EMPTY keyword previously
2698 used to mark empty slots in hash tables. Thus
2699 (DEFVAR *HT* (MAKE-HASH-TABLE))
2700 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
2701 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
2702 now does what ANSI says that it should. (You can still get
2703 similar noncompliant behavior if bang on the hash table
2704 implementation with all the symbols you get back from
2705 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
2706 This breaks binary compatibility, since tests for equality to
2707 :EMPTY are wired into things like the macroexpansion of
2708 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
2710 * There's now a minimal placeholder implementation for CL:STEP,
2711 as required by ANSI.
2712 * An obscure bug in the interaction of the normal compiler, the byte
2713 compiler, inlining, and structure predicates has been patched
2714 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
2715 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
2717 * Missing ordinary arguments in a macro call are now detected even
2718 when the macro lambda list contains &KEY or &REST.
2719 * The debugger no longer complains about encountering the top of the
2720 stack when you type "FRAME 0" to explicitly instruct it to go to
2721 the top of the stack. And it now prints the frame you request even
2722 if it's the current frame (instead of saying "You are here.").
2723 * As specified by ANSI, the system now always prints keywords
2724 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
2726 * The default initial SIZE of HASH-TABLEs is now smaller.
2727 * Type information from CLOS class dispatch is now propagated
2728 into DEFMETHOD bodies, so that e.g.
2729 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2731 is now basically equivalent to
2732 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2733 (DECLARE (TYPE SINGLE-FLOAT X))
2735 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
2736 operation, without having to do run-time type dispatch.
2737 * The macroexpansion of DEFMETHOD has been tweaked so that it has
2738 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
2739 * Since I don't seem to be making big file reorganizations very often
2740 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
2741 is overflowing my ability to conveniently back them up), I've finally
2742 checked the system into CVS. (The CVS repository is on my home system,
2743 not at SourceForge -- putting it on SourceForge might come later.)
2744 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
2745 high-level GC-NOTIFY-FOO functions send their output. (There's
2746 still very little control of where low-level verbose GC functions
2747 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
2748 less than it used to -- the GC-NOTIFY-FOO functions are now under
2749 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
2750 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
2751 in only one place in the source code, and propagates it automatically
2752 everywhere that it's needed. Thus e.g. when I bump the version from
2753 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
2754 * The C source files now include boilerplate legalese and documentation
2755 at the head of each file (just as the Lisp source files already did).
2756 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
2757 to his page will be replaced with a link to his new CLiki service.
2759 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
2761 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
2762 * The build process now looks for GNU make under the default name "gmake",
2763 instead of "make" as it used to. If GNU make is not available as "gmake"
2764 on your system, you can change this default behavior by setting the
2765 GNUMAKE environment variable.
2766 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
2767 can build without error under CMU CL.
2769 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
2771 * There is now a partial SBCL user manual (with some new text and some
2772 text cribbed from the CMU CL manual).
2773 * The beginnings of a profiler have been added (starting with the
2774 CMU CL profiler and simplifying and cleaning up). Eventually the
2775 main interface should be through the TRACE macro, but for now,
2776 it's still accessed through vaguely CMU-CL-style functions and macros
2777 exported from the package SB-PROFILE.
2778 * Some problems left over from porting CMU CL to the new
2779 cross-compilation bootstrap process have been cleaned up:
2780 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
2781 instead of SB!XC:DEFMACRO, compounded by an oversight on my
2782 part when getting rid of the compiler *BACKEND* stuff.)
2783 ** The value of *NULL-TYPE* was screwed up, because it was
2784 being initialized before the type system knew the final
2785 definition of the 'NULL type. This screwed up several key
2786 optimizations in the compiler, causing inefficiency in all sorts
2787 of places. (I found it because I wanted to understand why
2788 GET-INTERNAL-RUN-TIME was consing.)
2789 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
2790 PROCLAIM FTYPE information. Unfortunately this broke binary
2791 compatibility again, since now the forms output by DEFGENERIC
2792 to refer to functions which didn't exist in 0.6.3.
2793 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
2794 can use the new (as of 0.6.3) transform for SOME into MAP into
2796 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
2797 values to (INTEGER 0 1000000), so that the time code will no longer
2798 occasionally get blown up by Linux returning 1000000 microseconds
2799 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
2800 its output conform to the ANSI spec. (Alas, this makes its output
2801 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
2802 * A full call to MAP NIL with a single sequence argument no longer conses.
2803 * fixes to problems pointed out by Martin Atzmueller:
2804 * The manual page no longer talks about multiprocessing as though
2805 it were currently supported.
2806 * The ILISP support patches have been removed from the distribution,
2807 because as of version 5.10.1, ILISP now supports SBCL without us
2808 having to maintain patches.
2809 * added a modified version of Raymond Toy's recent CMU CL patch for
2810 EQUALP comparison of HASH-TABLE
2812 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
2814 * The system still can't cross-compile itself with
2815 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
2816 entails), but at least it can compile more of itself that way
2817 than it used to be able to, and various buglets which were uncovered
2818 by trying to cross-compile itself that way have now been fixed.
2819 * This release breaks binary compatibility again. This time
2820 at least I've incremented the FASL file format version to 2, so that the
2821 problem can be detected reliably instead of just causing weird errors.
2822 * various new style warnings:
2823 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
2824 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
2825 ** using the lexical binding of a variable named in the *FOO* style
2826 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
2827 as specified by ANSI.
2828 * *RANDOM-STATE* is no longer automatically initialized from
2829 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
2830 default behavior of the system is to repeat its behavior every time
2831 it's run. If you'd like to change this behavior, you can always
2832 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
2833 old convention there was no comparably easy way to get the system to
2834 repeat its behavior every time it was run.
2835 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
2836 FTYPE declarations has been removed, in favor of their ANSI
2837 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
2838 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
2839 the types of their sequence arguments can be determined at compile time.
2840 This is done through a new open code expansion for MAP which eliminates
2841 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
2842 argument types can be determined at compile time.
2843 * The optimizer now transforms COERCE into an identity operation when it
2844 can prove that the coerced object is already of the correct type. (This
2845 can be a win for machine generated code, including the output of other
2846 optimization transforms, such as the MAP transform above.)
2847 * Credit information has been moved from source file headers into CREDITS.
2848 * Source file headers have been made more standard.
2849 * The CASE macro now compiles without complaining even when it has
2852 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
2854 * (Note that the way that the PCL macroexpansions were rewritten
2855 to accommodate the change in DEFGENERIC below breaks binary
2856 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
2857 not run under sbcl-0.6.2. Once we get out of alpha releases,
2858 i.e. hit release 1.0.0, we'll probably try to maintain binary
2859 compatibility between maintenance releases, e.g. between sbcl-1.4.3
2860 and sbcl-1.4.4. Until then, however, it might be fairly common
2861 for maintenance releases to break binary compatibility.)
2862 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
2864 * The reporting of unhandled signals has been changed to print some
2865 explanatory text as well as the report form. (Previously only
2866 the report form was printed.)
2867 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
2868 it defines, so that the compiler no longer issues undefined function
2869 warnings for compiled-but-not-yet-loaded generic functions.
2870 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
2871 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
2872 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
2873 section of the ANSI spec are supported.
2874 * The "" nickname for the "KEYWORD" package has been removed.
2875 The reader still handles symbol tokens which begin with a package marker
2876 as keywords, but it doesn't expose its mechanism for doing so in the
2877 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
2878 * The system now issues STYLE-WARNINGs for contradictory TYPE
2879 proclamations. (Warnings for contradictory FTYPE proclamations would
2880 be nice too, but those can't be done usefully unless the type system
2881 is made smarter about FUNCTION types.)
2882 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
2883 systematized, so that "*target-*.lisp is supposed to exist only on the
2884 target and imply that there's a related file which exists on the
2885 host, and *host-*.lisp is supposed to exist only on the host and imply
2886 that there's a related file which exists on the target. This involves a
2887 lot of renaming. Hopefully the acute confusion caused by the renaming
2888 will be justified by the reduction in chronic confusion..
2889 ** runtime-type.lisp -> early-target-type.lisp
2890 ** target-type.lisp -> late-target-type.lisp
2891 ** early-host-format.lisp -> early-format.lisp
2892 ** late-host-format.lisp -> late-format.lisp
2893 ** host-error.lisp -> misc-error.lisp
2894 ** early-error.lisp -> early-target-error.lisp
2895 ** late-error.lisp -> late-target-error.lisp
2896 ** host-defboot.lisp -> early-defboot.lisp
2897 ** code/misc.lisp -> code/target-misc.lisp
2898 ** code/host-misc.lisp -> code/misc.lisp
2899 ** code/numbers.lisp -> code/target-numbers.lisp
2900 ** code/early-numbers.lisp -> numbers.lisp
2901 ** early-host-type.lisp -> early-type.lisp
2902 ** late-host-type.lisp -> late-type.lisp
2903 ** host-typep.lisp -> typep.lisp
2904 ** load.lisp -> target-load.lisp
2905 ** host-load.lisp -> load.lisp
2906 ** host-disassem.lisp -> disassem.lisp
2907 ** host-insts.lisp -> insts.lisp
2908 ** byte-comp.lisp -> target-byte-comp.lisp
2909 ** host-byte-comp.lisp -> byte-comp.lisp
2910 ** host-signal.lisp -> signal.lisp
2911 ** host-defstruct.lisp -> defstruct.lisp
2912 ** late-target-type.lisp -> deftypes-for-target.lisp
2913 Furthermore, several other previously target-only files foo.lisp (e.g.
2914 hash-table.lisp and random.lisp) have been split into a target-and-host
2915 foo.lisp file and a target-only target-foo.lisp file, with their key type
2916 definitions in the target-and-host part, so that the cross-compiler will
2917 know more about target types.
2918 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
2919 gone away. In their place are various *BACKEND-FOO* variables
2920 corresponding to the slots of the old structure.
2921 * A bug which caused the SB-COLD bootstrap-time package to be propagated
2922 into the target SBCL has been fixed.
2923 * The chill.lisp system for loading cold code into a running SBCL
2925 * Support for the CMU CL "scavenger hook" extension has been removed.
2926 (It was undocumented and unused in the CMU CL sources that SBCL was
2927 derived from, and stale in sbcl-0.6.1.)
2928 * Various errors in the cross-compiler type system were detected
2929 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
2930 (enabling various consistency checks). Many of them were fixed,
2931 but some hard problems remain, so the compiler is back to
2932 running without *TYPE-SYSTEM-INITIALIZED* for now.
2933 * As part of the cross-compiler type system cleanup, I implemented
2934 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
2935 * I have started adding UNCROSS calls throughout the type system
2936 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
2937 on cross-compiler input files will be able to go away, and various
2939 * CONSTANTP now returns true for quoted forms (as explicitly required
2942 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
2944 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
2945 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
2946 (MAKE-LIST -1). In the longer term, it ought to become true
2947 that declarations are assertions even at SAFETY 1. For now, it's not
2948 quite true even at SAFETY 3, but it's at least more nearly true..
2949 (Note that this change seems to increases the size of the system by
2950 O(5%) and to decrease the speed of the compiler by 20% or more.)
2951 * changed ALIEN printing to be much more abbreviated, as a short-term fix
2952 for the problem of printing dozens of lines of distracting information
2953 about low-level system machinery as part of the top stack frame
2954 on entry to the debugger when an undefined function was called.
2955 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
2956 is not reset to COMMON-LISP-USER.
2957 * Compilation of stuff related to dyncount.lisp has been made conditional
2958 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
2959 smaller. The various dyncount-related symbols have been moved into
2960 a new "SB-DYNCOUNT" package.
2961 * tty-inspect.lisp has been renamed to inspect.lisp.
2962 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
2963 feature has gone away. (When we eventually port to other flavors of
2964 libc and/or Unix, we'll try to make the differences between flavors
2965 invisible at the user level.)
2966 * Various other *FEATURES* tags, and/or their associated conditionals,
2967 have been removed if obsolescent, or given better documentation, or
2968 sometimes given more-mnemonic names.
2970 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
2972 * tidied up "make.sh" script
2973 * tidied up system directory structure
2974 * better "clean.sh" behavior
2975 * added doc/FOR-CMUCL-DEVELOPERS
2976 * many many small tweaks to output format, e.g. removing possibly-confusing
2977 trailing #\. character in DESCRIBE-INSTANCE
2978 * (EQUALP #\A 'A) no longer signals an error.
2979 * new hashing code, including EQUALP hashing
2980 * tidied up Lisp initialization and toplevel
2981 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
2982 * command line argument processing
2983 * added POSIX-GETENV function to deal with Unix-ish environment variables
2984 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
2985 terminating SBCL on EOF
2986 * non-verbose GC by default
2987 * There is no more "sbcl" shell script; the sbcl file is now the C
2988 runtime executable (just like CMU CL).
2989 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
2991 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
2992 symbol and package information as Lisp native symbol and package objects
2993 instead of strings naming symbols and strings naming packages. This way,
2994 whenever packages are renamed (as in warm init), debug information is
2995 transformed along with everything else.
2996 * tweaked the optimization policy declarations which control the building
2997 of SBCL itself. Now, among other things, the system no longer saves
2998 source location debugging information. (This helps two problems at once
2999 by reducing SBCL size and by keeping SBCL from trying to look for its
3000 sources -- which may not exist -- when reporting errors.)
3001 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3002 debugging and testing purposes
3003 * cleaned up printing, making the printer call PRINT-OBJECT for
3004 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3005 methods, giving nearly-ANSI behavior
3006 * converted almost all special variables to use *FOO* naming convention
3007 * deleted PARSE-TIME functionality, since it can be done portably
3008 * moved some files out of cold init into warm init
3009 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3011 * regularized formatting of source files
3012 * added an install.sh script
3013 * fixed ridiculous memory usage of cross-compiler by making
3014 compiler/alloc.lisp not try to do pooling unless it can hook
3015 itself into the GC of the cross-compilation host. Now the system
3016 builds nicely on my old laptop.
3017 * added :SB-ALLOC in target-features.lisp-expr
3018 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3019 was not implemented)
3020 * re-did condition handling and note reporting in the compiler. Notes
3021 are no longer handled by signalling conditions. Style warnings
3022 and warnings are handled more correctly and reported in such a way
3023 that it's easy to find one or the other in your output (so that you
3024 can e.g. figure out which of many problems caused COMPILE-FILE to
3026 * changed the severity of several compiler warnings from full WARNING
3027 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3028 compiler note reporting so that it doesn't use the condition system
3029 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3030 COMPILE-FILE command)
3031 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3032 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3033 no longer supported, since their implementation was deeply intertwingled
3034 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3035 * removed bogus "support" for compiler macros named (SETF FOO), and
3036 removed the compiler macro for SETF INFO (but only after making a fool
3037 of myself on the cmucl-imp mailing list by posting a bogus patch for
3038 DEFINE-COMPILER-MACRO..)
3039 * Compiled files containing forms which have side effects on the Lisp
3040 reader (such as DEFPACKAGE forms) are now handled more correctly.
3041 (Compiler queuing of top level lambdas has been suppressed by setting
3042 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3043 * deleted various currently-unused source files, e.g. gengc.lisp. They
3044 may be added back at some point e.g. when porting to other architectures,
3045 but until they are it's distracting to distribute them and to try to
3047 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3048 there were so many of them they're just distractions, and UNCROSS is
3049 known to be able to handle the current sources
3050 * moved PROFILE functionality into TRACE, so that it will be clear
3051 how the wrapping and unwrapping of functions when you profile them
3052 interacts with the wrapping and unwrapping of functions when you
3053 trace them. (Actually, the functionality isn't there yet, but at least
3054 the interface specification is there. Hopefully, the functionality will
3055 arrive with some future maintenance release.)
3056 * removed host-oops.lisp
3057 * changed signature of QUIT function to allow UNIX-CODE argument
3058 * fixed READ-SEQUENCE bug
3059 * tweaked verbose GC output so that it looks more like the progress
3060 output that ANSI specifies for functions like LOAD
3061 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
3062 * added <http://sbcl.sourceforge.com> to the banner information printed by