1 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2 * fixed cross-compiler leakages that prevented building a 32-bit
3 target with a 64-bit host compiler.
4 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
6 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
7 * incompatible change: the --noprogrammer option, deprecated since
8 version 0.7.5, has been removed. Please use the equivalent
9 --disable-debugger option instead.
10 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
12 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
13 inoperational for a while now) has been completely removed.
14 * null lexical environments are now printed as #<NULL-LEXENV>,
15 significantly reducing the amount of clutter in typical backtraces.
16 * documentation on weak pointers, finalization, and after GC hooks
17 has been added to the manual.
18 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
19 as other specialized array types, is much faster. SUBSEQ and
20 COPY-SEQ on such arrays have also been sped up.
21 * optimization: EQL is now more efficient when at least other argument
22 is known to be of type (OR FIXNUM (NOT NUMBER)).
23 * fixed bug: the runtime is now less vulnerable to changes in the
24 size of the SBCL object on OS X, and virtual memory is reserved for
25 all spaces that need to be at a fixed address.
26 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
27 * fixed bug: finalizers and after GC hooks that cause consing are now
29 * fixed bug: compiler error messages and summaries are now printed to
30 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
31 * fixed inference of the upper bound of an iteration variable.
32 (reported by Rajat Datta).
33 * fixed bug 211e: calling local functions with duplicated constant
34 keyword argument no longer causes a bogus style warning about an
36 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
37 ftype declaration to be disregarded. (reported by Dave Roberts)
38 * fixed bug 373: caused by erronous compilation of references to alien
39 variables in the runtime on ppc/darwin.
40 * fixed bug 376: CONJUGATE type deriver.
41 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
42 (reported by Baughn on #lisp)
43 * a cross-compiler bug on non-x86 platforms has been identified and
44 fixed. (thanks to Bruno Haible)
45 * improvements to the MIPS runtime code for increased stability.
46 (thanks to Thiemo Seufer)
47 * increased the maximimum compact environment size to allow
48 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
49 * partial workaround for bug 135: don't name the function we're
50 calling for hairy cases of EVAL, so as not to accumulate one environment
51 entry per call to EVAL. (reported by Kevin Reid)
52 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
53 * optimization: type testing for non-vector arrays should be faster.
54 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
56 * bug fix: setting 31st element of a bit vector to zero did not work
58 * bug fix: redefining a class definition which failed due to a
59 previous accessor / function clash now works (but see BUGS entry
60 #380 for more problems in this area). (thanks to Zach Beane)
61 * the long form of DEFINE-METHOD-COMBINATION disables method group
62 checking when given a single method group with pattern *. (thanks
64 * on x86 compiler supports stack allocation of results of simple
65 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
66 * support for building and running on Mac OS X 10.4 "Tiger" has been added
67 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
68 * fixed some bugs related to Unicode integration:
69 ** the restarts for recovering from input and output encoding
70 errors only appear when there is in fact such an error to
72 * fixed some bugs revealed by Paul Dietz' test suite:
73 ** MISC.549 and similar: late transformation of unsafe type
74 assertions into derived types caused unexpected code
76 ** SCALE-FLOAT type deriver is less wrong.
77 ** type derivers for EXP, LOG and similar functions compute result
78 types for complex arguments better.
79 ** (MISC.563) CONJUGATE type deriver works for very restricted
81 ** out-of-line type testers for character strings are available.
82 ** EQUAL compiler transform understands specialness of objects
84 ** accessing double-floats stored on the stack now works on x86-64.
85 ** debugger internals could sometimes create invalid lispobjs,
86 resulting in GC crashes.
87 ** MISC.548: type check weakening can convert required type into
89 ** initialization forms for bindings are not in scope of free special
92 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
93 * incompatible change: thread support for non-NPTL systems has
94 been removed - locking is buggy and unreliable. A threaded
95 SBCL build will now warn at startup and refuse to create
96 new threads, unless futex support is detected in the kernel
97 * incompatible change: the top level REPL now has only an ABORT
98 restart associated with it, not TOPLEVEL and ABORT as it used to.
99 TOP and TOPLEVEL are now available as debugger commands for
100 returning to the top level.
101 * incompatible change: forms evaluated in the REPL now use the
102 global optimization policy.
103 * incompatible change: user- and system-initialization files are
104 no longer processed with LOAD, but by READ and EVAL; hence the
105 global optimization policy, startup package, readtable, etc,
107 * The .fasl file format number has been incremented because of
108 various incompatible changes.
109 * internal entry point details and argument counts no longer appear
110 in backtraces unless explicitly requested by setting
111 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
112 * built-in and standard functions no longer have names like "top
113 level local call to FOO".
114 * fixed bug 32: functions defined in non-null lexical environments
115 now have more legible printed representation
116 * fixed bug 33: functions defined in non-null lexical environemnts
117 are now more amenable to inspection by INSPECT.
118 * workaround for bug 354: XEPs no longer appear in backtraces unless
119 explicitly requested.
120 * fixed bug: receiving the signal which results from attempting to
121 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
122 SIGBUS on other *BSDs) on architectures where the C stack is also
123 the Lisp stack (x86 and x86-64) from foreign code no longer leads
124 to debugger confusion or wild instability. (reported by Cheuksan
126 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
127 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
128 (reported by Lutz Euler)
129 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
130 compiled code. (reported by Paul Dietz)
131 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
132 specialized parameter to a method to something that is not TYPEP
133 the specializer is now possible.
134 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
135 face of package deletion.
136 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
137 pathname. (reported by David Tolpin on c.l.l)
138 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
139 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
140 STRING-STREAM and FILE-STREAM, respectively.
141 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
142 than previously; in addition, its test suite is now run on build.
143 (thanks to Luke Gorrie)
144 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
145 * optimization: added a immediate representation for single-floats
147 * fixed some bugs revealed by Paul Dietz' test suite:
148 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
149 ** attempting to create a package with a colliding nickname causes
150 correctable errors to be signalled.
151 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
152 ** several x86-64 backend bugs related to sign-extension of immediate
155 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
156 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
157 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
159 * fixed loading of multiply forward-referenced layouts.
160 (thanks to Cheuksan Wang)
161 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
162 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
163 (see COMPILE-FILE documentation for details of :PRINT option)
164 * fixed bugs 19 and 317: fixed-format floating point printing is
165 more accurate. This also fixes a bug reported by Adam Warner
166 related to the ~@F format directive.
167 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
169 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
170 dispatch table if the from-char is a dispatch macro character.
171 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
172 by the wordsize no longer ignore the last word. (reported by Lutz
174 * fixed bug in type checking of dynamic-extent variables. (reported
176 * optimization: sequence traversal functions use their freedom to
177 coerce function designators to functions.
178 * optimization: code with many calls to CLOS methods specialized on
179 CLOS classes has had redundant type checks removed.
180 * optimization: added declarations to speed up operations that access
181 the internal character database (for example STRING-UPCASE)
182 * optimization: comparison operations between floats and sufficiently small
183 fixnums no longer create extra rationals
184 * fixed some bugs related to Unicode integration:
185 ** portions of multibyte characters at the end of buffers for
186 character-based file input are correctly transferred to the
187 start of the buffer at the next read.
188 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
189 passing it through to OPEN.
190 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
191 argument given to internal calls to OPEN.
192 ** the built-in comment readers (introduced by character sequences
193 ";" and "#|") are more forgiving to encoding errors; they will
194 STYLE-WARN and then attempt to resync the stream at a character
195 boundary. (thanks to Teemu Kalvas)
196 * fixed some bugs in the x86-64 port:
197 ** Negative short int return values from c-calls are sign-extended
199 ** The stack is aligned to 16-bytes for c-calls, as required by
200 the ABI. (thanks to Cheuksan Wang)
201 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
202 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
203 for enums. (thanks to Vincent Arkesteijn)
204 ** Multiple small optimizations and bugfixes for floating point
206 * fixed some bugs revealed by Paul Dietz' test suite:
207 ** Space, Tab, Linefeed, Return and Page have the invalid
208 secondary constituent character trait.
209 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
211 ** WITH-INPUT-FROM-STRING should only update the index place on
213 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
215 ** Bit-array operations (BIT-AND and similar) worked incorrectly
216 with one-dimensional arrays with fill pointers.
217 ** TYPE-OF failed on a complex with an integer realpart and a
219 ** compiler failure during type inference for the code of form
220 (IF (EQL X (THE ...)) ...) (MISC.535).
222 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
223 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
224 platform. The port supports 61-bit fixnums, large memory spaces
225 and reloading shared object files.
226 * enhancement: saving cores with foreign code loaded is now
227 supported on ppc/Darwin in addition to the previously supported
229 * enhancement: the statistical profiler now walks deeper into the
230 call stack for more meaningful call-graphs and accrued time
231 reports (x86/x86-64 only). It also now reports time spent in
233 * enhancement: it is now possible to trace most individual methods
234 of a generic function in addition to tracing the generic function
236 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
238 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
239 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
240 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
241 produces an error. (thanks to Vincent Arkesteijn)
242 * bug fix: NAMESTRING on pathnames with :WILD components in their
243 directories works correctly. (thanks to Artem V. Andreev)
244 * fixed bug 125: compiler preserves identity of closures. (reported
246 * bug fixed: functions with &REST arguments sometimes failed with
247 "Undefined function" when compiled with (DEBUG 3). (reported by
249 * bug fix: overflow during compiling of setting element of a bit
250 vector with constant index and value. (reported by Timmy Douglas)
251 * build fix: fixed the dependence on *LOAD-PATHNAME* and
252 *COMPILE-FILE-PATHNAME* being absolute pathnames.
253 * on x86 compiler partially supports stack allocation of dynamic-extent
255 * GO and RETURN-FROM do not check the extent of their exit points
256 when compiled with SAFETY 0.
257 * fixed some bugs related to Unicode integration:
258 ** encoding and decoding errors are now much more robustly
259 handled; it should now be possible to recover even from invalid
260 input or output to the terminal. (thanks to Teemu Kalvas)
261 ** provided a first cut at implementing STRING-TO-OCTETS and
262 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
263 ** altered the SB-MD5 contributed module slightly, changing the
264 interface just enough for it to be supportable for builds where
265 lisp characters are not eight bits.
266 * fixed some bugs revealed by Paul Dietz' test suite:
267 ** the FORMATTER-generated functions for ~V[ conditionals require
268 the correct number of arguments.
269 ** READ-FROM-STRING returns the mandated second value when applied
270 to displaced strings.
271 ** the #\Rubout and #\Backspace characters are treated as invalid
272 constituent characters by the tokenizer.
274 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
275 * new feature: reloading changed shared object files with
276 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
277 * new feature: references to foreign variables and functions
278 can now be compiled and loaded before the corresponding shared
279 object file is loaded, as long as the foreign definitions are
280 available at runtime.
281 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
282 supported. (thanks to Dan Debertin)
283 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
284 just keywords. (thanks to Vincent Arkesteijn)
285 * fixed bug #331: structure-class instances corresponding to
286 DEFSTRUCT forms are now created eagerly.
287 * fixed bug #345: backtraces from calls to undefined functions work
288 on x86 as well. Related bug #61 is now also partially fixed on x86
289 (backtraces from throws to unknown catch tags.)
290 * bug fix: lambda-list parsing is now stricter vrt. order and number
291 of lambda-list keywords.
292 * bug fix: as specified by AMOP, an error is signalled if a
293 class-option appears multiple times in a DEFCLASS form. (reported
295 * bug fix: RANDOM can be compiled when the compiler derives the type
296 of its numeric argument as a disjoint set of small integers.
297 (reported by Paul Dietz)
298 * bug fix: starting a core saved with shared objects loaded when
299 those objects are not available no longer causes threaded SBCL to
300 hang. (reported by Sean Ross)
301 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
303 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
304 argument, which must always be NIL. (reported by Kalle Niemitalo)
305 * bug fix: printing 1.0d+23 no longer results in an error.
306 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
307 * bug fix: structure slot setters preserve evaluation order. (thanks
309 * fixed some bugs related to Unicode integration:
310 ** RUN-PROGRAM can allow its child to take input from a Lisp
311 stream. (reported by Stefan Scholl)
312 ** ASDF-INSTALL successfully downloads .tar.gz files in all
313 locales. (reported by Ken Causey)
314 * fixed some bugs revealed by Paul Dietz' test suite:
315 ** INCF, DECF and REMF evaluate their place form as specified in
317 ** FORMATTER expands ~{ ~} iteration directives with V or #
318 parameters correctly.
319 ** FORMATTER deals with the ~@[ ~] conditional directive where the
320 consequent uses no arguments correctly.
321 ** the system has a partial understanding of the (COMPLEX RATIO)
323 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
326 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
327 * new feature: a build-time option (controlled by the :SB-UNICODE
328 keyword feature, enabled by default) for building the system with
329 support for the entire 21-bit character space defined by the
331 * new feature: the system now has rudimentary external-format
332 support; the primary user-visible change at this time is that
333 characters with the high bit set (such as lower-case-e-acute) will
334 print correctly to a terminal in a UTF-8 environment.
335 * minor incompatible change: BASE-CHAR no longer names a class;
336 however, CHARACTER continues to do so, as required by ANSI.
337 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
338 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
339 has been moved to the SB-EXT package (temporarily re-exported from
341 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
342 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
344 * fixed bug #351: better error-handlind and reporting for malformed
346 * fixed bug #350: bignum-printing is now more memory-efficient,
347 allowing printing of very large bignums, eg. (expt 2 10000000).
348 (reported by Bruno Haible)
349 * fixed bug #302: better primitive-type selection for intersection
351 * fixed bug #308: non-graphic characters now all have names, as
352 required. (reported by Bruno Haible)
353 * bug fix: redefining a class with different superclasses now correctly
354 removes it from the direct-subclasses of its previous superclasses.
355 (reported by David Morse)
356 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
357 new value now works. (reported by Bruno Haible)
358 * bug fix: correct canonicalization of multiple non-standard slot
359 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
360 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
361 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
362 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
363 now exists, an signals an error.
364 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
365 during macroexpansion for non-iteration variables as well. (reported
366 by Bruno Haible for CMUCL)
367 * bug fix: Cyclic structures and unprintable objects in compiler
368 messages no longer cause errors. (reported by Bruno Haible)
369 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
370 and READ-FROM-STRING all now return a primary value of NIL if
371 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
372 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
373 (reported by Bruno Haible for CMUCL)
374 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
375 do not designate a condition. (reported by Bruno Haible for
377 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
378 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
379 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
380 permitting resolution in favour of any of the conflicting symbols.
381 (reported by Bruno Haible for CMUCL)
382 * bug fix: EQUAL compiler optimizations is less aggressive on
383 strings which can potentially compare true despite having distinct
384 specialized array element types.
385 * bug fix: unit enumerations can be defined without dividing by
386 zero. (thanks to Vincent Arkesteijn)
387 * FORMAT compile-time argument count checking has been enhanced.
388 (report from Bruno Haible for CMUCL)
389 * a partial workaround for the bug 262: the compiler does not try to
390 inline-expand a local function doing RETURN-FROM from a deleted
391 BLOCK. (thanks to Peter Denno for the bug report and to David
392 Wragg for the simple test case)
393 * fixed some bugs revealed by Paul Dietz' test suite:
394 ** RENAME-PACKAGE allows all package designators as new package
396 ** constraint propagation and lambda variable substitution are
397 more cautious in dealing with partially deleted code.
398 ** compiler sometimes lost reoptimization passes.
399 ** CERROR, given a condition as condition designator, passes its
400 remaining arguments to the continue format control without
402 ** Case-altering FORMAT directives work correctly on non-ASCII
404 ** The REAL type specifier handles bounds outside the floating
405 point ranges without signalling FLOATING-POINT-OVERFLOW.
406 ** Functions with IR1-transformations can create intercomponent
407 references to global functions.
408 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
410 ** FORMAT ~R treats a nil value for its first parameter correctly.
412 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
413 * enhancement: saving cores with foreign code loaded is now
414 supported on x86/NetBSD and sparc/Linux in addition to the previously
416 * bug fix: on some platforms repeated installations caused multiple
417 copies of HTML documentation to be installed -- should not happen
418 any more. (reported by Stefan Scholl)
419 * bug fix: parsing self-recursive alien record types multiple times
420 no longer causes infinite recursion. (reported by Thomas F. Burdick,
421 original patch by Helmut Eller for CMUCL)
422 * bug fix: stack-exhaustion detection works now on NetBSD as well.
423 (thanks to Richard Kreuter)
424 * bug fix: defining classes whose accessors are methods on existing
425 generic functions in other (locked) packages no longer signals
426 bogus package lock violations. (reported by François-René Rideau)
427 * bug fix: special variables as DEFMETHOD parameters no longer have
428 associated bogus type declarations. (reported by David Wragg and
430 * bug fix: read-write consistency on streams of element-type
431 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
432 * bug fix: redefiniton of the only method of a generic function with
433 no DEFGENERIC no longer emits a full WARNING. In addition,
434 redefinition of generic functions with no DEFGENERIC to an
435 incompatible lambda list now signals an error. (thanks to Zach
437 * bug fix: DEFGENERIC now works even when there's a function of the
438 same name in an enclosing lexical environment. (thanks to Zach
440 * fixed compiler failure, caused by instrumenting code during
441 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
442 * optimization: added loop analysis and improved register allocation
443 * fixed some bugs revealed by Paul Dietz' test suite:
444 ** POSITION on displaced vectors with non-zero displacement
445 returns the right answer.
446 ** (SIMPLE-STRING) is a valid type specifier for sequence
448 ** *PRINT-LEVEL* handling for slotless structures is pedantically
450 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
451 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
453 ** The justification version of the FORMAT ~< directive treats
454 non-zero minpad parameter correctly.
456 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
457 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
458 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
459 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
460 the supported interface.
461 * new feature: Single-stepping of code compiled with DEBUG 2 or
462 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
463 * new feature: saving cores with foreign code loaded is now
464 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
465 Timothy Moore's work for CMUCL)
466 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
467 parameters to * instead of NIL if no initform is supplied.
468 (reported by Johan Bockgaard)
469 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
470 correctly when FUNCALL appears as the car of the form. Note:
471 despite this FUNCALL forms are not currently subject to
472 compiler-macro expansion. (port of Raymond Toy's fix for the
473 same from CMUCL, reported by Johan Bockgaard)
474 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
475 (thanks for Teemu Kalvas)
476 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
477 case instead of terminating the iteration (thanks for Julian
478 Squires, Sean Champ and Raymond Toy)
479 * bug fix: incorrect expansion of defgeneric that caused a style
480 warning. (thanks for Zach Beane)
481 * bug fix: slot accessor effective method computation works properly
482 for classes with multiple non-standard applicable methods on
483 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
484 * on x86 compiler supports stack allocation of results of LIST and
485 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
486 CMUCL implementation by Gerd Moellmann)
487 * fixed some bugs revealed by Paul Dietz' test suite:
488 ** FORMAT strings with both the ~<~:;~> form of the justification
489 directive and pretty-printing directives cause an error.
491 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
492 * incompatible change: the internal functions
493 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
494 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
495 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
496 instead of the old functions.
497 * new feature: on platforms where "dladdr" is available foreign
498 function names now appear in backtraces. (based on Helmut Eller's
500 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
501 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
503 * documentation: ASDF manual is now distributed with SBCL.
504 * bug fix: SBCL can now load its contributed modules with REQUIRE
505 even if the system-provided entries have been removed from
506 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
508 * bug fix: backtraces involving undefined functions or assembly
509 routines are more informative. (thanks to Brian Downing)
510 * bug fix: mutually referent alien structures now work correctly.
511 (reported by Rick Taube)
512 * bug fix: structures defined by WITH-ALIEN can be referred to
513 within other definitions in the same WITH-ALIEN.
514 * bug fix: division operators (MOD, TRUNCATE and the like) with
515 constant zero divisors and integer dividends no longer generate
517 * bug fix: provide default methods for INPUT-STREAM-P and
518 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
519 * bug fix: improve the detection and resolution of MOP metacycles
520 (where effective method computation depends on the generic function
521 having its effective method computed). (reported by Bruno Haible)
522 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
523 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
524 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
525 * bug fix: pathnames with relative directory components can be
526 represented relative to default pathnames.
527 * optimization: in taking the GCD of bignums, reduce the two bignums
528 to approximately the same size (using Euclid's algorithm) before
529 applying the more sophisticated binary GCD. (thanks to Juho
531 * optimization: COUNT on bitvectors now operates word-at-a-time.
532 * optimization: ASH with a positive, but not necessarily constant,
533 (leftwards) shift, when in a modular context, is compiled to a
535 * fixed some bugs revealed by Paul Dietz' test suite:
536 ** FORMAT variable parameters ("~V<char>") are defaulted properly
537 if the corresponding argument is NIL.
538 ** FORMAT directives accepting a minpad parameter treat negative
540 ** literal commas as character parameters to FORMAT directives are
542 ** literal spaces directly after ~<Newline> directives within a
543 format-logical-block (~:< ~@:>) do not induce :FILL-style
544 conditional newlines.
545 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
546 as specified: it no longer includes conditional newlines).
547 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
549 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
550 :PER-LINE-PREFIX argument does not evaluate to a string.
552 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
553 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
554 the manual for details; for now, package locks can be disabled by
555 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
556 if no major problems are found then it is likely that they will be
557 compiled in unconditionally.
558 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
559 unsupported operators on all platforms. To load a shared library
560 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
561 object file, link it into a shared library outside of SBCL and
562 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
564 * bug workaround: ROOM T and the GC were not working together
565 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
566 reporting facility aren't preserved. That reporting has been
567 disabled, so now until and unless someone figures out how to make it
568 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
569 * minor incompatible change: as threatened around sbcl-0.8.0, the
570 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
571 The symbols are also exported from SB-PCL for backwards
572 compatibility, but more so than before SB-PCL should be treated as
573 an implementation-internal package.
574 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
576 * the SB-SPROF contrib now works on (most) non-x86 architectures.
577 It is known as of this release not to work on the Alpha, however.
578 * fixed bug #167: errors signalled due to illegal syntax in method
579 bodies are now more legible.
580 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
581 designators and can hence be used with TYPEP.
582 * fixed bug #333: CHECK-TYPE now ensures that the type error
583 signalled, if any, has the right object to be accessed by
584 TYPE-ERROR-DATUM. (reported by Tony Martinez)
585 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
586 5.1.2.3 for multiple-value place subforms. (reported by Kalle
588 * fixed bug #334: programmatic addition of slots using specialized
589 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
590 and :ALLOCATION :CLASS slots.
591 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
592 float exponents. (rereported by Peter Seibel)
593 * fixed a bug: #\Space (and other whitespace characters) are no
594 longer considered to be macro characters in standard syntax by
596 * fixed bug: initialization of condition class metaobjects no longer
597 causes an instance of the condition to be created. (reported by
599 * fixed bug: it is now possible to have slots such that
600 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
601 description is neither :INSTANCE nor :CLASS.
602 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
603 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
604 SLOT-VALUE-USING-CLASS), and no longer causes errors with
605 non-standard SLOT-DEFINITION-ALLOCATION values.
606 * fixed bugs: various race conditions handling exiting threads.
607 CL-PPCRE's thread torture test now passes.
608 * fixed arguably-a-bug: GC time proportional to number of threads in
609 system even when most of them are idle
610 * optimization: improved performance of BIT and SBIT on bit-vectors.
611 * .fasl file incompatibility: The fasl file version number has
612 been incremented because of changes associated with package locks.
614 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
615 * minor incompatible change: the system no longer provides
616 optimization hints (conditions which are TYPEP
617 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
618 mode; these hints are still emitted when higher SPEED optimization
620 * new contrib module: a sampling profiler (profiling by statistical
621 sampling, rather than by instrumenting functions) is available as
622 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
623 * the behaviour of the standard function ED is now customizeable by
624 third parties through a hook variable: see ED's documentation
625 string for information on the protocol.
626 * the compiler no longer emits efficiency notes for (FUNCALL X)
627 when the type of X is uncertain under default optimization
629 * fixed bug 276: mutating a binding of a specialized parameter to a
630 method to something that is not TYPEP the specializer is now
632 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
633 exhibit the required behaviour on the x86 platform. (thanks to
634 Peter van Eynde, Eric Marsden and Bruno Haible)
635 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
636 even for difficult arguments. (reported by Peter Graves)
637 * fixed bug 141a: the backquote printer now descends quoted
639 * fixed another bug in backquote printing: no more destructive
640 modification of the form's list structure. (reported by Brian
642 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
643 move between its address being taken and the call to
644 interrupt_thread, fixing a crashing race condition.
645 * the SB-POSIX contrib implementation has been adjusted so that it
646 no longer exhibits ridiculously poor performance when constructing
647 instances corresponding to C structs.
649 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
650 * minor incompatible change: the sb-grovel contrib now treats C
651 structures as alien (in the sense of SB-ALIEN) objects rather than
652 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
653 has implications for memory management of client code
654 (sb-grovel-returned objects must now be manually managed) and for
655 type safety (alien objects now have full types).
656 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
657 used to control emission of compiler diagnostics, rather than the
658 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
659 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
660 quality should be considered deprecated.
661 * install.sh now installs the user manual as well
662 * (not quite a new documentable feature, but worth considering in
663 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
664 beginnings of a semantically meaningful condition hierarchy is
665 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
667 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
668 designator as the defaults argument.
669 * fixed bug: Displaced arrays whose displaced-to array has become
670 too small now cause ARRAY-DIMENSION to signal an error, providing
671 for safer bounds-checking. (reported by Bruno Haible)
672 * fixed bug: DEFCLASS slot definitions with identical :READER and
673 :WRITER names now signal a reasonable error. (reported by Thomas
675 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
677 * fixed bug: Invalid slot specification errors now print correctly.
678 (thanks to Zach Beane)
679 * fixed bug 320: Shared to local slot value transfers in class
680 redefinitions now happen corrently from superclasses as
681 well. (reported by Bruno Haible)
682 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
684 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
685 improper lists correctly. (reported by Bruno Haible)
686 * fixed bug 313: source-transform for <fun-name> was erroneously
687 applied to a call of a value of a variable with name <fun-name>.
688 (reported by Antonio Menezes Leitao)
689 * fixed bug 307: The obsolete instance protocol ensures that
690 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
691 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
692 remove dead unknown-values globs from the middle of the stack.
693 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
694 easier to resume long computations after using *BREAK-ON-SIGNALS*
695 to diagnose and fix failures. (thanks to Nikodemus Siivola)
696 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
697 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
698 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
699 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
700 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
702 * fixed a (fairly theoretical) bug in string printing: if
703 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
704 does not have array-element-type equal to the most general string
706 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
707 function name. (thanks to Nikodemus Siivola)
708 * fixed bug: compile-time format string checker failed on
709 non-closed ~{. (reported by Thomas F Burdick)
710 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
711 don't warn on legal loop code involving more than one aggregate
712 boolean. (thanks to Nikodemus Siivola)
713 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
714 in keyword position to MAKE-PACKAGE was not being reported as
716 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
717 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
719 * fixed bugs 280 and 312: the checking for multiple definitions in a
720 file is less likely to become confused by uses of inline
722 * fixed bug: the #S reader macro performs the keyword coercion
723 specified for slot names. (reported by Kalle Niemitalo)
724 * fixed bug: lambda lists may contain symbols whose names start with
725 & but are not lambda-list-keywords; their occurrence triggers a
727 * fixed bug 321: define-method-combination argument lambda lists do
728 not cause invalid code to be generated when &optional or &aux
729 variables have default values. (reported by Bruno Haible)
730 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
731 have CLOS classes; this appears also to have fixed reported
732 instability in stack exhaustion detection.
733 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
734 MUFFLE-WARNING when no associated restart is present is now
736 * optimization: rearranged the expansion of various defining macros
737 so that each expands into only one top-level form in a
738 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
740 * optimization: used a previously little-used slot in symbols to
741 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
743 * fixed some bugs revealed by Paul Dietz' test suite:
744 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
746 ** Fixed an optimization bug related to inheritance of initforms
747 from local to shared slots.
748 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
749 ** CAST optimizer forgot to flush argument derived type.
750 ** print/read consistency on floats is now orders of magnitude
751 more likely. (thanks also to Bruno Haible for a similar report
753 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
754 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
755 for objects of type REAL. Make it so.
756 ** SXHASH is specified (infelicitously) to respect similarity,
757 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
758 it so. (thanks to Markus Ziegler)
759 ** on the Alpha, the compiler succeeds in compiling functions
760 returning a known number of arguments greater than 63.
761 ** fixed handling of invalid NIL arguments in keyword position
763 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
765 ** provided a readably-printable representation for RANDOM-STATE
767 ** ensured that pathnames, where they have a namestring, always
768 print using #P"..." syntax.
770 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
771 * Support for the forthcoming 2.0 version of the NetBSD kernel
772 running on x86 hardware has been added. (thanks to Perry
773 E. Metzger most immediately, and others for their past work)
774 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
775 current release version; SBCL's OpenBSD support had been broken
776 since about the time of OpenBSD's switch to ELF binary format.)
777 * [placeholder for DX summary]
778 ** user code with &REST lists declared dynamic-extent, under high
779 speed or space and low safety and debug optimization policy.
780 * The manual has been converted to Texinfo format and the debugger
781 chapter from the cmucl manual has been added.
782 * A facility has been added to extract documentation strings from
783 sbcl and store them as Texinfo-formatted snippets for inclusion in
784 the manual (via Texinfo's @include directive)
785 * bug fix: compiler emitted division in optimized DEREF. (thanks for
786 the test case to Dave Roberts)
787 * bug fix: multidimensional simple arrays loaded from FASLs had fill
788 pointers. (reported by Sean Ross)
789 * bug fix: PROFILE output is printed nicely even for large numerical
790 values. (thanks to Zach Beane)
791 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
792 greater than 32 handle EOF correctly.
793 * bug fix: on X86 an immediate argument of the IMUL instruction is
794 correctly printed in disassembly. (thanks to Lutz Euler)
795 * bug fix: class slots in redefined classes preserve their old
796 values. (thanks to Bruno Haible and Nikodemus Siivola)
797 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
798 succeeds. (reported by Marco Baringer)
799 * fixed some bugs revealed by Paul Dietz' test suite:
800 ** READ-SEQUENCE now works on ECHO-STREAMs.
801 ** RATIONALIZE works more according to its specification. (thanks
804 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
805 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
806 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
807 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
808 should matter to you only if you rebind the printer control
809 variables and then find you want different bindings in the
810 debugger than in the ordinary execution of your program.)
811 * The runtime build system has been tweaked to support building
812 (on SPARC/SunOS) using a C compiler which invokes Sun's own
813 assembler and linker. (thanks to Nikodemus Siivola)
814 * Unbound, undefined, undeclared variables now trigger full
815 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
816 more often programmer error than deliberate exploitation of undefined
818 * optimization: the hash algorithm for strings has changed to one
819 that is less vulnerable to spurious collisions. (thanks to Juho
821 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
822 needless bounds checking. (thanks to Juho Snellman)
823 * optimization: implemented multiplication as a modular
824 (UNSIGNED-BYTE 32) operation on the PPC backend.
825 * fixed some bugs revealed by Paul Dietz' test suite:
826 ** ADJUST-ARRAY now copies the datum in a zero rank array if
828 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
829 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
830 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
832 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
834 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
836 ** ECHO-STREAMs no longer attempt to echo the end of file value to
837 their output stream on EOF from read.
838 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
839 have been read to end-of-file.
840 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
842 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
843 description of determination of which consecutive characters
845 ** Printing the "Space" character with escaping on now yields "#\\ ",
846 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
847 ** Reading floating-point numbers with *READ-BASE* set to a number
848 less than 10 works correctly.
849 ** Reading floating-point numbers with *READ-BASE* set to a number
850 more than 10 works correctly.
851 ** Printing with *PRINT-READABLY* targets the standard readtable, not
852 the readtable currently in effect.
854 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
855 * minor incompatible change: parsing of namestrings on a physical
856 (Unix) host has changed; numbers after the final #\. in a
857 namestring are no longer interpreted as a version field. This is
858 intented to be largely invisible to the user, except that the
859 meaning of the namestring "*.*.*" has changed: it now refers to a
860 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
861 should usually be replaced by
862 (make-pathname :name :wild :type :wild :version :wild)
863 with the added benefit that this is more likely to be portable.
864 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
865 option to OPEN now signals an error if the file being opened
866 exists; this may have an impact on existing code.
867 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
868 signals received, on the PowerPC platforms (both Linux and
869 Darwin). (thanks to Pierre Mai for pointing out the location of
871 * several fixes on OS X: The system now builds and runs cleanly on
872 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
873 (thanks to Brian Mastenbrook)
874 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
875 second-resolution: integer multiples of 1/3600 between -24 and 24.
876 (thanks to Vincent Arkesteijn)
877 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
878 type when called with 1 argument; PEEK-CHAR checked type of
879 PEEK-TYPE only after having read first character from a
880 stream. (reported by Peter Graves)
881 * bug fix: the garbage collector now has much better locality
882 behaviour, and in particular no longer treats all memory as being
883 exhausted when many small objects point to each other in a deeply
885 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
886 recognized as being TYPEP their class.
887 * bug fix: the PUSHNEW documentation string has been corrected.
888 (thanks to Vincent Arkesteijn)
889 * bug fix: defaulting of the value for the last of an atypically
890 large number of multiple values being bound was not being
891 performed correctly on the Alpha or PPC platforms
892 * optimization: implemented multiplication as a modular
893 (UNSIGNED-BYTE 32) operation on the x86 backend.
894 * optimization: SEARCH on simple-base-strings can now be open-coded.
895 (see also contrib/compiler-extras.lisp for inspiration for
896 teaching the compiler about the Boyer-Moore algorithm).
897 * value, returned by MAX (and MIN) called with several EQUALP, but
898 not EQL, arguments now does not depend on compiler settings.
899 * fixed some bugs revealed by Paul Dietz' test suite:
900 ** in stack analysis liveness information is propagated from
901 non-local entry points.
902 ** pathwise CAST removing failed when the CAST node did not start
904 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
905 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
907 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
908 host is already defined.
909 ** RENAME-FILE works on streams instead of signalling an internal
911 ** PEEK-CHAR uses the current readtable when determining whether
912 or not a character is whitespace.
913 ** MERGE-PATHNAMES handles the case when the pathname does not
914 specify a name while the default-pathname specifies a version.
915 ** Pathnames now stand a better chance of respecting print/read
917 ** Attempting to use standardized file system operators with a
918 pathname with invalid :DIRECTORY components signals a
920 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
922 ** DIRECTORY on logical pathnames is more correct.
923 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
924 signal a TYPE-ERROR if their argument is not a stream.
925 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
926 designator argument does not designate a stream.
927 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
928 examining the synonym.
929 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
931 ** OPEN and WITH-OPEN-STREAM allow opening streams with
932 element-type larger than ([UN]SIGNED-BYTE 32).
934 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
935 * When built with the :SB-FUTEX feature, threaded builds now take
936 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
937 for faster/more reliable mutex and condition variable support.
938 * Incompatible change (but one you probably shouldn't have been using
939 anyway): the interface and code for arbitrating between multiple
940 threads in the same user session has been redesigned.
941 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
942 error when called without an explicit environment argument.
943 (thanks to Nikodemus Siivola)
944 * bug fix: buffered :DIRECTION :IO streams are less likely to become
945 confused about their position. (thanks to Adam Warner and Gerd
947 * bug fix: Pretty printing backquoted forms with unquotations in the
948 argument list position of various code constructs such as LAMBDA
949 now works correctly. (reported by Paul Dietz)
950 * bug fix: Pretty printing unquotations no longer loses all
951 stream position information.
952 * optimization: performance of string output streams is now less
953 poor for multiple small sequence writes.
954 * optimization: performance of CSUBTYPEP in the presence of complex
955 expressions involving CONS and NOT many times has been improved.
956 (reported by Paul Dietz)
957 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
959 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
960 streams for the REPL, for the debugger, and so on. (thanks to
962 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
963 * fixed some bugs revealed by Paul Dietz' test suite:
964 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
965 is ignored if it is too small, rather than propagating through
966 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
967 ** extremely complex negations of CONS types were not being
968 sufficiently canonicalized, leading to inconsistencies in
970 ** VALUES tranformer lost derived type.
972 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
973 * fixed a bootstrapping bug: the build process no longer assumes
974 that the various BOOLE-related constants have the same value in
975 host and target lisps. (noted by Paul Dietz' test suite on an
976 SBCL binary built from CLISP)
977 * The system can now be dynamically linked on the MIPS platform,
978 which enables dynamic loading of foreign code from Lisp. (thanks
979 to Ralf Baechle for discussions on the MIPS ABI)
980 * The system now records debugging information for its own source
981 files in a filesystem-position-independent manner, relative to
982 the "SYS" logical host.
983 * fixed a compiler bug: MV-LET convertion did not check references
984 to the "max args" entry point. (reported by Brian Downing)
985 * tweaked disassembly notes to be less confident about proclaiming
986 some instruction as an LRA. (thanks to Brian Downing)
987 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
988 now each have their own history, command character, and other
989 characteristics. (thanks to David Lichteblau)
990 * fixed some bugs revealed by Paul Dietz' test suite:
991 ** compiler failure in compiling LOGAND expressions including a
993 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
994 shift greater than 32.
995 ** FLUSH-DEST did not mark blocks for type check regeneration.
996 ** HANDLER-CASE failed to accept declarations in handler clauses
997 in some circumstances.
999 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1000 * New code in contrib/sb-introspect (still probably not entirely
1001 stable yet) provides some support for smart Lisp development
1002 environments like SLIME.
1003 * The conditions signalled for errors occurring when loading .fasl
1004 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1005 in a way which should help ASDF recover gracefully.
1006 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1007 stuff has been cleaned up. If you code contrib/ stuff, this might
1008 affect you, and you can look at contrib/README, contrib/STANDARDS,
1009 and/or the 0.8.4.27 diff to check.
1010 * In full calls the compiler now does not generate checks for declared
1011 argument types for all arguments.
1012 * various threading fixes
1013 ** and some experimental patches which didn't make it into
1014 the main tree for this release, but which are shipped in
1015 contrib/experimental-thread.patch as a possible fix for some
1016 failures (deadlock, spinning...) in GC-intensive multithreaded
1018 * fixed PPC build problem (source code incompatibility of different
1019 library versions): added offsetof() hackery which attempts to divine
1020 where glibc maintainers put uc_mcontext today
1021 * fixed bug 282: compiler does not trust type assertions while passing
1022 arguments to a full call.
1023 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1024 &OPTIONAL VALUES type parameter.
1025 * fix bug 214: algorithm for noting rejected templates is now more
1026 similar to that of template seletion. (also reported by rydis on
1028 * fixed bug 141b: printing backquoted information readably and prettily
1029 inserts a space where necessary.
1030 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1031 (CHARACTER 10) are now reported as errors, rather than propagated
1032 as unknown types. (reported by piso on #lisp)
1033 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1034 with values NIL and :ERROR. (thanks to Milan Zamazal)
1035 * fixed bug 191c: CLOS now does proper keyword argument checking as
1036 described in CLHS 7.6.5 and 7.6.5.1.
1037 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1038 longer raise an error; further, using a list as a for-as-arithmetic
1039 counter now raises a meaningful error.
1040 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1041 now understood by sequence creation functions such as MAKE-SEQUENCE
1043 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1044 a STRING-INPUT-STREAM.
1045 * compiler enhancement: SIGNUM is now better able to derive the type
1047 * type declarations inside WITH-SLOTS are checked. (reported by
1049 * fixed some bugs revealed by Paul Dietz' test suite:
1050 ** incorrect optimization of TRUNCATE for a positive first
1051 argument and negative second.
1052 ** compiler failure in let-convertion during flushing dead code.
1053 ** compiler failure while deriving type of TRUNCATE on an
1054 interval, containing 0.
1055 ** ASH of a negative bignum by a negative bignum count now returns
1057 ** intersection of CONS types now canonicalizes properly, fixing
1058 inconsistencies in SUBTYPEP.
1060 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1061 * incompatible change: The --disable-debugger command line
1062 option now clobbers the debugger at a more fundamental
1063 level, by redefining #'INVOKE-DEBUGGER instead of by
1064 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1065 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1066 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1067 enter the debugger REPL and then suffer recursive errors
1068 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1069 while under the new system, BREAK in --disable-debugger mode
1070 terminates the system just as an unhandled error would.
1071 * fixed compiler performance when processing loops with a step >1;
1072 * bug fix: DOCUMENTATION now retrieves generic function
1073 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1074 support has been systematized, and now supports the methods
1075 specified by ANSI, along with a default method and a method for
1076 slot documentation. (reported by Nathan Froyd)
1077 * bug fix: effective methods associated with a generic function are
1078 no longer cached over a change of that generic function's method
1079 combination. (reported by Andreas Fuchs)
1080 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1081 names a non-existent directory. (thanks to Andreas Fuchs)
1082 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1083 the PPC platform, lead to stack corruption; this has been fixed.
1084 (reported by Rainer Joswig)
1085 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1086 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1087 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1088 arithmetic in general, is now much more reliable on the PPC
1090 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1091 platform now returns the right answer.
1092 * optimization: restored some effective method precomputation in
1093 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1094 precomputation is now tunable.
1095 * optimization: compiler-internal data structure use has been
1096 reviewed, and changes have been made that should improve the
1097 performance of the compiler by about 20%.
1098 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1099 simple-base-strings and simple-bit-vectors is improved.
1100 * optimization: the optimization of 32-bit logical and arithmetic
1101 functions introduced in version 0.8.3 on the x86 has been
1102 implemented on the mips, ppc and sparc platforms; an
1103 implementation of the same facility, but for 64-bit arithmetic,
1104 has been added for the alpha.
1105 * microoptimization: the compiler is better able to make use of the
1106 x86 LEA instruction for multiplication by constants.
1107 * bug fix: in some situations compiler did not report usage of
1108 generic arithmetic in (SPEED 3) policy.
1109 * bug 145b fix: compiler used wrong type specifier while converting
1110 MEMBER-types to numeric.
1111 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1113 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1114 index argument now works properly on the Alpha platform.
1115 * bug fix: floating point exception treatment on the Alpha platform
1117 * bug fix: FILE-POSITION works much better on string input and
1118 output streams. (thanks to Nikodemus Siivola)
1119 * bug fix: many threading/garbage collection symptoms sorted.
1120 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1121 might be pseudo-atomic.
1122 * internal change: Stopping for GC is now done with signals not
1123 ptrace. GC is now done in whichever thread wanted it, instead of
1125 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1127 * bug fix: result form in DO is not contained in the implicit
1129 * incompatible change: ICR structure is changed; the value part of
1130 CONTINUATION is now called LVAR; corresponding functions are
1131 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1132 * added type deriver for ISQRT (thanks to Robert E. Brown).
1133 * bug fix: better support for loading from the command line when an
1134 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1136 * fixed some bugs revealed by Paul Dietz' test suite:
1137 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1138 ** ROUND and FROUND now give the right answer when given very
1139 small float arguments.
1140 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1142 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1143 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1144 ** LCM should return a non-negative integer.
1145 ** PARSE-INTEGER returned the index of a terminator instead of the
1146 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1147 ** PARSE-INTEGER returned an incorrect index being applied to a
1149 ** LCM with two arguments of 0 returns 0 rather than signalling
1151 ** unsigned addition of a 32-bit constant with the high bit set no
1152 longer causes an internal compiler error on the x86.
1153 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1154 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1155 with negative last argument.
1156 ** byte specifiers with zero size and position no longer cause
1157 an error during type derivation.
1158 ** bignum multiplication on the Alpha platform now returns the
1160 * porting: The system now builds on SuSE AMD64, although it still
1161 generates a 32-bit binary.
1162 * .fasl file incompatibility: The fasl file version number has
1163 been incremented (because of the changes to internal compiler
1164 data structures referred to above).
1166 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
1167 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
1168 more accurately, on the Darwin kernel running on PowerPC hardware.
1169 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
1170 * Compiler code deletion notes now signal a condition of type
1171 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
1172 an associated MUFFLE-WARNING restart.
1173 * The compiler now performs limited argument count validation of
1174 constant format strings in FORMAT, and where appropriate in ERROR,
1175 CERROR and WARN. (thanks to Gerd Moellmann)
1176 * New ASDF-INSTALL contrib can be used for automatic download and
1177 installation of third-party Lisp code from CCLAN or other sites
1179 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
1180 which forces another thread to execute a function supplied by the
1182 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
1183 now accept and act upon their :ELEMENT-TYPE keyword argument.
1184 (reported by Martin Atzmueller, Edi Weitz)
1185 * bug fix: FILE-POSITION now accepts position designators up to
1186 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
1187 is the greater. (thanks to Patrik Nordebo)
1188 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
1189 Kalle Olavi Niemitalo)
1190 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
1191 printable. (reported by Eric Marsden)
1192 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
1193 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
1194 * x86 bug fix in control stack exhaustion checking: now shows backtrace
1195 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
1196 (thanks to Stig Sandoe)
1197 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
1198 UNREAD-CHAR now correctly includes the unread character in the
1199 target sequence. (thanks to Gerd Moellmann)
1200 * bug fix in threaded builds: the system can now be suspended and
1201 resumed by shell job control with minimal disruption.
1202 * bug fixes in times and timezones >2038AD
1203 * better handling of "where is GNU make?" problem in build scripts
1204 (thanks to Nikodemus Siivola)
1205 * new optimization: inside a named function any reference to a
1206 function with the same name is considered to be a self-reference;
1207 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
1208 optimization quality.
1209 * new optimization on x86: logical functions and + now have
1210 optimized (UNSIGNED-BYTE 32) versions, which are automatically
1211 used when the result is truncated to 32 bits.
1212 * VALUES declaration is partially enabled.
1213 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
1214 * fixed some bugs revealed by Paul Dietz' test suite:
1215 ** The system now obeys the constraint imposed by
1216 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
1217 types form a lattice under type intersection.
1218 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
1219 ** ASSOC now ignores NIL elements in an alist.
1220 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
1221 and (1+ MOST-POSITIVE-FIXNUM) answers.
1222 ** The addition of a method with invalid qualifiers to a generic
1223 function does not cause an error to be signalled immediately;
1224 a warning is signalled, and the error is generated only on
1225 calling the generic function.
1226 * changed .fasl file version number, in part to add type codes for
1227 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
1228 obscure ANSI requirements
1230 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
1231 * fixed bug 148: failure to inline-expand a local function left
1232 garbage, confusing the compiler.
1233 * fixed bugs 3cd: structure slot readers perform type check if the
1234 slot can have an invalid value (i.e. it is either not initialized
1235 or can be written with a less specific slot writer).
1236 * bug fix: the compiler now traps array references to elements off
1237 the end of an array; previously, the bounds checking in some
1238 circumstances could go off-by-one.
1239 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
1241 * type declarations for array element types now obey the description
1242 on the CLHS page "Declaration TYPE", as per discussions on
1243 sbcl-help around 2003-05-08. This means that a declaration
1244 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
1245 declaration, all references to BAR will be asserted or assumed
1246 (with THE, so dependent on compiler policy) to involve objects of
1247 type FOO. Note that no such declaration is implied in
1248 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
1249 * declared types of functions from the "Conditions"
1250 chapter. (reported by Paul Dietz)
1251 * bug fix: CERROR accepts a function as its first argument.
1252 * bug fix: NTH an NTHCDR accept a bignum as index
1253 arguments. (reported by Adam Warner)
1254 * optimization: character compare routines now optimize comparing
1255 against a constant character. (reported by Gilbert Baumann)
1256 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
1257 argument now works properly on the MIPS platform.
1258 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
1259 * repeated evaluation of the same DEFSTRUCT, a slot of which is
1260 declared to have a functional type, does not cause an error
1262 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
1263 many :DEFAULT-INITARGS. (reported by Istvan Marko)
1264 * fixed bug: if last continuation of a deleted block has a
1265 destination, this destination should be deleted too. (reported by
1267 * fixed a bug in the bootstrap process: the host compiler's values
1268 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
1269 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
1270 test case from Patrik Nordebo)
1271 * improved the ability of the disassembler on the PPC platform to
1272 provide helpful disassembly notes.
1273 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
1274 the class in more cases than previously.
1275 * bug fix: FILE-POSITION now understands :START and :END for
1276 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
1277 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
1278 8) data. (thanks to David Lichteblau)
1279 * bug fix: it is possible to add a method to a generic function
1280 without lambda list.
1281 * bug fix: reader failed to signal END-OF-FILE inside an
1282 object representation. (reported by Nikodemus Siivola)
1283 * fixed some bugs revealed by Paul Dietz' test suite:
1284 ** LAST and [N]BUTLAST should accept a bignum.
1285 ** condition slot accessors are methods.
1286 ** (VECTOR NIL) is a subtype of STRING.
1288 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
1289 * minor incompatible change: some nonsensical specialized lambda
1290 lists (used in DEFMETHOD) which were previously ignored now signal
1292 * minor incompatible change: the system is now aware of the types of
1293 variables in the COMMON-LISP package, and will signal errors for
1294 most violations of these type constraints (where previously they
1295 were silently accepted).
1296 * minor incompatible change: COMPILE-FILE now uses the freedom
1297 afforded (ANSI 3.2.2.3) to use derived function types for
1298 functions defined in the same file. This also permits the system
1299 to warn on static type mismatches and function
1300 redefinition. (Currently it does not work with high DEBUG level.)
1301 * minor incompatible change: VALUES declaration is disabled.
1302 * When issuing notes, the compiler now signals a condition of type
1303 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
1304 restart for use in user handlers. It is expected that the
1305 COMPILER-NOTE condition will eventually become a condition
1306 supertype to a hierarchy of note types, which will then be
1307 handleable in a similar fashion. However, at the moment, no such
1308 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
1309 but it's an implementation detail, not a classification for the
1311 * Changes in type checking closed the following bugs:
1312 ** type checking of unused values (192b, 194d, 203);
1313 ** template selection based on unsafe type assertions (192c, 236);
1314 ** type checking in branches (194bc).
1315 * A short form of VALUES type specifier has ANSI meaning (it has
1316 increased the number of situations when SBCL cannot perform type
1318 * fixed bug in DEFSTRUCT: once again, naming structure slots with
1319 keywords or constants is permissible.
1320 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
1321 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
1322 classes. (thanks to Antonio Martinez)
1323 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
1324 outputs FRESH-LINE or TERPRI, and no longer converts its stream
1325 argument to a pretty-print stream. Instead, it leaves any such
1326 operations to DESCRIBE-OBJECT methods.
1327 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
1329 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
1330 lambda lists. (thanks to David Lichteblau)
1331 * bug fix: Defining a generic function with a :METHOD-CLASS being a
1332 subclass of STANDARD-METHOD no longer causes stack exhaustion.
1333 (thanks to Gerd Moellmann)
1334 * fixed bug 246: increased compilation speed of long
1335 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
1337 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
1339 * DEFCONSTANT now throws a condition of type
1340 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
1341 constant to a non-EQL value; CONTINUE and ABORT restarts
1342 respectively change and preserve the value.
1343 * fixed bug 63: The code walker, part of the implementation of CLOS,
1344 is now better at handling symbol macros.
1345 * bug fix: There is no longer an internal implementation type named
1346 CL:LENGTH. (reported by Raymond Toy)
1347 * bug fix: In macro-like defining macros/special operators the
1348 implicit block does not enclose the lambda list.
1349 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
1350 enclosed in parentheses) are not suitable as type specifiers, and
1351 their use properly signals an error now.
1352 * bug fix: An argument count mismatch for a type specifier in code
1353 being compiled no longer causes an unhandled error at compile
1354 time, but signals a compile-time warning.
1355 * fixed simple vector readable printing
1356 * bug fix: DESCRIBE takes more care over whether the class
1357 precedence list slot of a class is bound before accessing it.
1358 (reported by Markus Krummenacker)
1359 * bug fix: FORMATTER can successfully compile pretty-printer format
1360 strings which use variants of the ~* directive inside.
1361 * bug fix: SEARCH now applies its TEST predicate to the elements of
1362 the arguments in the correct order. (thanks to Wolfhard Buss)
1363 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
1364 in type inference. (thanks to Robert E. Brown)
1365 * bug fix: Reading in symbols with an explicit package name of ""
1366 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
1367 * fixed some bugs revealed by Paul Dietz' test suite:
1368 ** NIL is now allowed as a structure slot name.
1369 ** Arbitrary numbers, not just REALs, are allowed in certain
1370 circumstances in LOOP for-as-arithmetic clauses.
1371 ** Multiple class redefinitions before slot access no longer
1372 causes a type error.
1373 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
1374 association between the name and a class.
1375 ** Generic functions with non-standard method-combination and over
1376 five methods all of which return constants no longer return NIL
1377 after the first few invocations. (thanks to Gerd Moellmann)
1378 ** CALL-NEXT-METHOD with no arguments now passes the original
1379 values of the arguments, even in the presence of assignment.
1380 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
1382 ** DISASSEMBLE works with closures and funcallable instances.
1383 ** ADD-METHOD now returns the generic function, not the new method.
1384 ** FIND-METHOD signals an error if the lengths of the specializers
1385 is incompatible with the generic function, even if the ERRORP
1387 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
1388 which its argument is a member.
1389 ** DEFCLASS only redefines the class named by its class-name
1390 argument if that name is the proper name of the class;
1391 otherwise, it creates a new class.
1392 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
1393 of the UNBOUND-SLOT condition to the name of the slot.
1394 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
1395 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
1396 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
1397 SLOT-MAKUNBOUND in the specified fashion.
1399 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
1400 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
1401 cross-compilation host. As a consequence, we can now bootstrap our
1402 way up to SBCL starting with a bare gcc toolchain and human-readable
1403 source code (first the source to CLISP, then the source to SBCL).
1404 * A contributed module containing a partial implementation of the
1405 simple-streams interface has been included. (thanks to Rudi
1407 * A contributed module implementing the RFC1321 Message Digest
1408 Algorithm, known as MD5, has been included.
1409 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1410 no longer has any effect, as the code controlled by this feature
1411 has been deleted. (As far as we know, no-one has ever built using
1412 this feature, and its semantics were confused in any case).
1413 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
1414 work on conditions (as required by the ANSI specification),
1415 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
1416 expected behaviour on conditions. Users should note, however,
1417 that such behaviour is not required by the ANSI specification,
1418 and so use of this behaviour may render their code unportable.
1419 * fixed some bugs revealed by Paul Dietz' test suite:
1420 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
1422 ** &ENVIRONMENT parameter in macro lambda list is bound first.
1423 ** SXHASH on condition objects no longer returns NIL.
1424 ** :ALLOCATION :CLASS slots are better treated; their values are
1425 updated on class redefinition, and initforms inherited from
1426 superclasses are applied.
1427 ** REMOVE-METHOD returns its generic function argument even when
1428 no method was removed.
1429 ** SHARED-INITIALIZE now initializes the values of the requested
1430 slots, including those with :ALLOCATION :CLASS.
1431 ** ALLOCATE-INSTANCE now works on structure classes defined via
1432 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
1434 ** SLOT-EXISTS-P now works on conditions, as well as structures
1436 ** MAKE-LOAD-FORM now has the required methods on
1437 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
1438 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
1439 keyword, and now implements the SLOT-NAMES argument.
1440 ** methods with &OPTIONAL arguments no longer allow too many
1441 arguments to be passed in the call without error.
1442 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
1443 option is consistent with the required arguments of the generic
1444 function lambda list.
1445 * bug fix: REQUIRE accepts a string designator. (Thanks to
1447 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
1448 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
1449 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
1450 * bug fix: The compiler now checks for duplicated variables in macro
1452 * bug fix: SETQ on globals returns the correct value.
1453 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
1454 not a COMPILER-ERROR (followed by some other strange error on
1455 choosing the CONTINUE restart).
1456 * bug fix: make.sh and friends are now more consistent in the way that
1457 they look for GNU "make".
1459 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
1460 * experimental native threads support (on x86 Linux >=2.4 only).
1461 This is not compiled in by default: you need to add :SB-THREAD to
1462 the target features. See the "Beyond ANSI" chapter of the manual
1464 * fix for longstanding nonANSIism: The old distinction between
1465 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
1466 The return value from CL:FIND-CLASS is now a CLOS class, and
1467 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
1468 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
1469 * An interface to the MetaObject Protocol, as described in Kiczales,
1470 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
1471 MIT Press, 1991, is available from the SB-MOP package.
1472 * incompatible change: the SB-PCL package should now be considered
1473 a private implementation detail, and no longer a semi-private MOP
1475 * minor incompatible change: due to rearrangement for threads, the
1476 control stack and binding stack are now allocated at arbitrary
1477 addresses instead of being hardcoded per-port. Users affected by
1478 this probably have to be doing advanced things with shared
1479 libraries, and will know who they are.
1480 * minor incompatible change: Previously, all --eval forms used were
1481 processed with READ before any of them were processed with EVAL.
1482 Now each --eval form is processed with both READ and EVAL before
1483 the next --eval form is processed. (Thus package operations like
1484 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
1485 work as the user might reasonably expect.)
1486 * minor incompatible change: *STANDARD-INPUT* is now only an
1487 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
1489 * minor incompatible change: Y-OR-N-P is now character-oriented,
1490 not line oriented. Also, YES-OR-NO-P now works without errors.
1491 (thanks to Antonio Martinez)
1492 * sb-aclrepl module improvements: an integrated inspector, added
1493 repl features, and a bug fix to :trace command.
1494 * Known functions, which cannot be open coded by the backend, are
1495 considered to be able to check types of their arguments. (fixing
1496 a bug report by Nathan J. Froyd)
1497 * fixed a bug in computing method discriminating functions: It is
1498 now possible to define methods specialized on classes which have
1499 forward-referenced superclasses. (thanks to Gerd Moellmann)
1500 * fixed evaluation order in optional entries (reported by Gilbert
1502 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
1503 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
1504 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
1505 required-by-AMOP NAME argument, as well as CLASS and
1506 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
1507 * fixed bug 20: DEFMETHOD can define methods using names that are
1508 not the proper names of classes to designate class specializers.
1509 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
1510 Unix file descriptors, instead of blowing up. (thanks to Antonio
1512 * Garbage collection refactoring: user-visible change is that a
1513 call to the GC function during WITHOUT-GCING will not do garbage
1514 collection until the end of the WITHOUT-GCING. If you were doing
1515 this you were probably losing anyway.
1516 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
1517 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
1518 TYPEP the latter but not the former.
1519 * The compiler issues a full WARNING for calls to undefined functions
1520 with names from the CL package.
1521 * MAP-INTO for a vector destination is open coded. (reported by
1522 Brian Downing on c.l.l)
1523 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
1524 documentation string.
1525 * fixed some bugs revealed by Paul Dietz' test suite:
1526 ** COPY-ALIST now signals an error if its argument is a dotted
1528 ** Condition slots are now accessed more correctly in the presence
1529 of multiple initargs for a given slot.
1530 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
1531 exclude restarts of the same name associated with a different
1533 ** DEFCLASS of forward-referenced classes with another
1534 forward-referenced class in the superclasses list no longer
1536 ** Condition slots are now initialized once each, not multiple
1537 times. (thanks to Gerd Moellmann)
1538 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
1540 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
1541 ** NSET-EXCLUSIVE-OR does not return extra elements when its
1542 arguments contain duplicated elements.
1543 ** RESTART-CASE understands local macros.
1544 ** RESTART-CASE associates exactly its own restarts with a condition.
1545 ** ENDP in safe mode checks its argument to be of type LIST.
1546 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
1547 in question is unbound.
1548 ** Optimized MAKE-INSTANCE functions no longer cause internal
1549 assertion failures in the presence of duplicate initargs.
1550 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
1551 ** Side-effectful :DEFAULT-INITARGS have their side-effects
1552 propagated even in the ctor optimized implementation of
1554 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
1556 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
1557 * a better implementation of SXHASH on (simple) bit vectors,
1558 measured both in execution speed and in distribution of results
1559 over the positive fixnums, has been installed. Likewise, a better
1560 implementation of EQUAL for simple bit vectors is now available.
1561 * fixed CEILING optimization for a divisor of form 2^k.
1562 * fixed bug 240 (emitting extra style warnings "using the lexical
1563 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
1564 by Antonio Martinez)
1565 * fixed SXHASH, giving different results for NIL depending on type
1566 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
1567 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
1568 variable. (found by Rolf Wester)
1569 * SBCL does not ignore type declarations for special
1570 variables. (reported by rif on c.l.l 2003-03-05)
1571 * some bug fixes in contrib/sb-aclrepl/
1572 * fixed some bugs revealed by Paul Dietz' test suite:
1573 ** a bug in the CONS type specifier, whereby the CAR and CDR
1574 types got intertwined, has been fixed;
1575 ** the type system is now able to reason about the interaction
1576 between INTEGER and RATIO types more completely;
1577 ** APPEND, [N]REVERSE and NRECONC check that those their
1578 arguments, which must be proper lists, are really so;
1579 ** An array specialized to be unable to hold elements has been
1580 implemented, as required -- yes, really -- by ANSI;
1581 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
1582 on malformed property lists;
1584 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
1585 * incompatible packaging change: in line with Unix convention,
1586 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
1587 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
1588 * REQUIRE and PROVIDE are now optionally capable of doing something
1589 useful. See the documentation string for REQUIRE.
1590 * infrastructure for a managed SBCL contrib system: contributed
1591 modules in this release include:
1592 ** the ASDF system definition facility;
1593 ** an interface to the BSD Sockets API;
1594 ** an ACL-like convenience interface to the repl;
1595 (thanks to Kevin Rosenberg)
1596 ** an implementation of ROTATE-BYTE, with efficient implementation
1598 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
1599 gives a closer approximation to the right answer than previously.
1600 (thanks to Raymond Toy)
1601 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
1602 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
1603 optional environment arguments, as required by ANSI.
1604 * fixed bugs in other functions taking environment objects, allowing
1605 calls with an explicit NIL environment argument to be compiled
1607 * fixed bug 228: primary return values from
1608 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
1609 COMPILE or FUNCTION.
1610 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
1611 :TYPE will no longer signal errors on innocuous objects.
1612 * fixed bug 231b: SETQ is better at respecting type declarations in
1613 the lexical environment.
1614 * fixed a bug in DEFCLASS: classes named by symbols with no or
1615 unprintable packages can now be defined.
1616 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
1617 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
1618 * fixed compiler failure related to checking types of functions.
1619 (reported by Robert E. Brown)
1620 * the compiler is now much more consistent in its error-checking
1621 treatment of bounding index arguments to sequence functions: in
1622 (SAFETY 3) code, errors will be signalled in almost all cases if
1623 invalid sequence bounding indices are passed to functions defined
1624 by ANSI to operate on sequences.
1625 * fixed a bug in the build procedure: documentation of SBCL-specific
1626 packages is now preserved and available in the final Lisp image.
1627 * lifted FDEFINITION lookup out of loops in the implementation of
1628 many list operations. (thanks to Robert E. Brown)
1629 * fixed a bug in the reader: the #n# reader macro now works for
1630 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
1631 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
1632 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
1633 E. Brown and Tony Martinez respectively)
1634 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
1635 SLOT-BOUNDP: in particular, it is now able to optimize them much
1636 better, and is now not vulnerable to having packages renamed.
1637 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
1638 always called when a slot is not present in an instance. (thanks
1640 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
1641 longer signal an error on unreading a character following EOF on
1642 the previous constituent stream. (thanks to Tony Martinez)
1643 * fixed some bugs revealed by Paul Dietz' test suite:
1644 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
1645 not just nonnegative fixnums;
1646 ** the logical bit-array operators such as BIT-AND now accept an
1647 explicit NIL for their "opt-arg" argument (to indicate a
1648 freshly-consed result bit-array);
1649 ** ELT now signals an error on an invalid sequence index in safe
1651 ** the type system is now cleverer about negations of numeric
1652 types, and consequently understands the BIGNUM and RATIO types
1654 ** the type system is now cleverer about the interaction between
1655 INTEGER and RATIO types: while bugs still remain, many more
1656 cases are accurately computed;
1657 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
1658 if it is in the last clause;
1659 ** CONSTANTLY now correctly returns a side-effect-free function in
1661 ** DECLARE is no longer treated as a special-operator; in
1662 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
1663 * incremented fasl file version number due to the change in the
1664 DEFSTRUCT-SLOT-DESCRIPTION structure.
1666 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
1667 * minor incompatible change: code processed by the "interpreter" or
1668 EVAL now has a compilation optimization policy of (DEBUG 2)
1669 (changed from (DEBUG 1)) to improve debuggability of interactive
1670 development, and to allow the use of the debug RETURN command in
1672 * an experimental implementation of the RETURN command for the
1673 debugger has been included. (thanks to Frederik Kuivinen)
1674 * fixed bug 62: constraints were not propagated into a loop.
1675 * fixed bug in embedded calls of SORT (reported and investigated by
1677 * fixed some bugs revealed by Paul Dietz' test suite:
1678 ** printing and reading of arrays with some dimensions having
1679 length 0 (thanks to Gerd Moellmann);
1680 ** BOA constructor with &AUX argument without a default value does
1681 not cause a type error;
1682 ** CONSTANTP now returns true for all self-evaluating objects.
1684 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
1685 * fixed bug 127: DEFSTRUCT now does not clobber old structure
1686 accessors that are related by inheritance, as specified in the
1687 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
1688 Valtteri Vuorikoski)
1689 * The compiler is now able to inline functions that were defined in
1690 a complex lexical environment (e.g. inside a MACROLET).
1691 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
1693 * Support for the upcoming FreeBSD-5.0 release has been included.
1694 (thanks to Dag-Erling Smorgrav)
1695 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
1696 effect when it is not in a toplevel context.
1697 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
1698 stand a better chance of being correct. (thanks to Gerd
1700 * fixed bug in COERCE, which now signals an error on coercing a
1701 rational to a bounded real type which excludes the expected
1703 * The compiler is now able to derive types more accurately from the
1704 COERCE and COMPILE functions.
1705 * fixed bug 223: functional binding is considered to be constant
1706 only for symbols in the CL package.
1707 * fixed bug 231: SETQ did not check the type of a variable being set
1708 (reported by Robert E. Brown)
1709 * A new optimization for MAKE-INSTANCE has been included, fixing
1710 various bugs (including relating to :ALLOCATION :CLASS slots and
1711 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
1713 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
1714 ** As required by ANSI, LOOP now disallows anonymous collection
1715 clauses such as COLLECT I in conjunction with aggregate boolean
1716 clauses such as THEREIS (= I 1);
1717 ** LOOP now signals an error when any variable is reused in the
1718 same loop (including the potentially useful construct analogous
1719 to WITH A = 1 WITH A = (1+ A);
1720 ** IT is only a special loop symbol within the first clause of a
1721 conditional loop clause;
1722 ** LOOP with a typed iteration variable over a hashtable now
1723 signals a type error iff it should.
1724 * fixed some other bugs revealed by Paul Dietz' test suite:
1725 ** FILE-STREAM now names the class previously known as FD-STREAM;
1726 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
1727 argument) no longer signals an error;
1728 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
1729 of the slot symbol, rather than using the current package
1730 ((:CONC-NAME "") continues to intern the slot's name in the
1732 * incremented fasl file version number, because of the incompatible
1733 change to the DEFSTRUCT-DESCRIPTION structure, and again because
1734 of the new implementation of DEFINE-COMPILER-MACRO.
1736 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
1737 * Support for building SBCL for MIPS platforms running in
1738 little-endian mode has now been checked in, and basic
1739 functionality on said platforms verified.
1740 * minor incompatible change: PCL now records the pathname of a file
1741 in which methods and the like are defined, rather than its
1743 * minor incompatible change: TRUENAME now considers the truename of
1744 a file naming a directory to be the pathname with :DIRECTORY
1745 component indicating that directory.
1746 * minor incompatible change: a NAMED clause in the extended form of
1747 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
1748 reason for the previous behaviour is unclear.
1749 * more systematization and improvement of CLOS and MOP conformance
1750 in PCL (thanks to Gerd Moellman and Pierre Mai):
1751 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
1753 ** DEFINE-METHOD-COMBINATION no longer signals an error for
1754 primary methods with no specializers;
1755 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
1757 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
1758 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
1759 FORWARD-REFERENCED-CLASSes; error reporting on
1760 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
1762 ** SXHASH on CLOS instances now uses a slot internal to the
1763 instance to return different numbers on distinct instances,
1764 while preserving the same return value through invocations of
1766 ** DEFMETHOD signals errors when methods with longer incongruent
1767 lambda lists are added to generic functions;
1768 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
1769 CLASS, as specified in AMOP;
1770 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
1771 on the order returned by the primary method for classes of
1772 class STANDARD-CLASS;
1773 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
1774 * fixed some bugs shown by Paul Dietz' test suite:
1775 ** DOLIST puts its body in TAGBODY;
1776 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
1778 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
1779 value producing form;
1780 ** if more variables are given to PROGV than values, extra
1781 variables are bound and made to have no value;
1782 ** NSUBSTITUTE on list arguments gets the right answer with
1784 ** ELT signals an error of type TYPE-ERROR when the index argument
1785 is not a valid sequence index;
1786 ** LOOP signals (at macroexpansion time) an error of type
1787 PROGRAM-ERROR when duplicate variable names are found;
1788 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
1789 ** FUNCALL of special-operators now cause an error of type
1791 ** PSETQ now works as required in the presence of side-effecting
1792 symbol-macro places;
1793 ** NCONC accepts any object as its last argument;
1794 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
1796 ** loop-for-as-package does not require a package to be explicitely
1798 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
1800 * fixed bug 166: compiler preserves "there is a way to go"
1801 invariant when deleting code.
1802 * fixed bug 172: macro lambda lists with required arguments after
1803 &REST arguments now cause an error to be signalled. (thanks to
1805 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
1806 bug. (thanks to Matthew Danish)
1807 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
1809 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
1810 arguments are lexically rebound. (thanks to Gerd Moellmann and
1812 * fixed bug 194: error messages are now more informative when there
1813 is no primary method applicable in a call to a generic
1814 function. (thanks to Gerd Moellmann)
1815 * fixed bug in command line argument checking (thanks to Julian
1817 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
1818 (thanks to Matthew Danish)
1819 * incremented fasl file version number, because of the
1820 SXHASH-related changes in the layout of CLOS data structures
1822 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
1823 * minor incompatible change: The runtime (the Unix executable named
1824 "sbcl") is now much pickier about the .core files it will load.
1825 Essentially it now requires .core files to descend from the same
1826 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
1827 as the runtime does. (The intent is to prevent the crashes which
1828 can occur, and which can even be reported as mysterious failures,
1829 when people patch the sources or change the build parameters
1830 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
1831 sbcl and .core files.)
1832 * fixed bug: VALUES-LIST is no longer optimized away.
1833 * fixed bug 142: The FFI conversion of C string values to Lisp
1834 string values no longer conses excessively. (thanks to Nathan
1835 Froyd porting Raymond Toy's fix to CMU CL)
1836 * began to systematize and improve MOP conformance in PCL (thanks to
1837 Nathan Froyd, Gerd Moellman and Pierre Mai):
1838 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
1840 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
1841 ** FINALIZE-INHERITANCE is now called on class finalization;
1842 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
1843 argument precedence order.
1844 * fixed bug 202: The compiler no longer fails on functions whose
1845 derived types contradict their declared type.
1846 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
1847 so it can be non-toplevel.
1848 * The fasl file version number has changed (because of the new
1849 implementation of DEFMACRO).
1850 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
1851 safe code, that any length requirement by their type-specifier
1852 argument is valid. The exceptions to this are described in bug
1854 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
1855 functions now check the types of their inputs as required by ANSI.
1856 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
1857 introduced symbol is DECLAREd to be SPECIAL.
1858 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
1859 * fixed bug: :COUNT argument to sequence functions may be negative
1860 * fixed bug: body of DO-SYMBOLS may contain declarations
1861 * fixed bug: PUSHNEW now evaluates its arguments from left to right
1862 (reported by Paul F. Dietz, fixed by Gerd Moellman)
1863 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
1864 symbol macro only once
1865 * fixed printing of call frame when argument list is unavailable
1866 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
1867 * compiler no longer signals WARNING on unknown keyword
1870 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
1871 * A beta-quality port to the mips architecture running Linux,
1872 based on the old CMUCL backend, has been made. It has been tested
1873 on a big-endian kernel, and works sufficiently well to be able to
1874 rebuild itself; it has not been tested in little-endian mode.
1875 * fixed an inconsistency between gencgc.c and purify.c which made
1876 dumping/loading .core files unreliable
1877 * fixed bug 120a: The compiler now deals correctly with IFs where
1878 the consequent is the same as the alternative, instead of
1879 misderiving the return type. (thanks to Alexey Dejneka)
1880 * fixed bug 113: Logical pathnames are now dumpable (the logical
1881 host is resolved at load-time, throwing an error if it is not
1883 * fixed bug 174: FORMAT's error message is slightly clearer when a
1884 non-printing character is used in a format directive.
1885 * fixed several bugs in compiler checking of type declarations, i.e.
1886 violations of the Python "declarations are assertions" principle
1887 (thanks to Alexey Dejneka)
1888 * fixed several bugs in PCL's error checking (thanks to Gerd
1890 * fixed bug: printing of FILE-ERROR (thanks to Antonio
1892 * fixed bug in compilation of functions as first class values
1893 (thanks to Antonio Martinez-Shotton)
1894 * The compiler's handling TYPE-ERRORs which it can prove will
1895 inevitably happen at runtime has been cleaned up and corrected
1896 in several ways. (thanks to Alexey Dejneka)
1897 * improved argument type checking for various basic arithmetic
1898 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
1899 lavished on them in the past that they can be compiled in many
1900 ways in different special cases
1901 * fixed bug 181: compiler checks validity of user supplied type
1903 * cleaned up code flushing in optimization: Function calls which
1904 should signal errors for safety purposes (e.g. which ANSI says
1905 should signal errors when their arguments are of incorrect type)
1906 are no longer optimized away.
1907 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
1908 * incremented fasl file version number, because changes in the
1909 implementation of sequence functions like COERCE caused
1910 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
1911 in old inline expansions) to become undefined. (Actually these
1912 changes were later undone, so we might very well be binary
1913 compatible with 0.7.7 after all, but leaving the version number
1914 incremented seemed like the simplest and most conservative
1917 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
1918 * An alpha-quality port to the parisc architecture running Linux,
1919 based on the old CMUCL backend, has been made. This, even more so
1920 than the other backends, should be considered still a work in
1921 progress; known problems include that the Linux kernel in 64-bit
1922 mode does not propagate the correct sigcontext structure to
1923 userspace, and consequently SBCL on a parisc64 kernel will not
1925 * fixed bug 189: The compiler now respects NOTINLINE declarations for
1926 functions declared in FLET and LABELS. (I.e. "LET conversion" is
1927 suppressed.) Also now that the compiler is looking at declarations
1928 in the environment, it checks optimization declarations as well,
1929 and suppresses inlining when (> DEBUG SPEED).
1930 * More fixes have been made to treatment of floating point exception
1931 treatment and other Unix signals. In particular, floating point
1932 exceptions no longer cause Bus errors on the SPARC/Linux platform.
1933 * The detection and handling of control stack exhaustion (infinite
1934 or very deeply nested recursion) has changed. Stack exhaustion
1935 detection is now done by write-protecting pages at the OS level
1936 and applies at all optimization settings; when found, a
1937 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
1938 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
1939 be caught using IGNORE-ERRORS.
1940 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
1941 correctly when transforming recursive LABELS functions to LETs.
1942 (thanks to Alexey Dejneka)
1943 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
1944 that are names of constants or global variables.
1945 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
1946 alien routines with docstrings.
1947 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
1948 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
1950 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
1951 (thanks to Eric Marsden)
1952 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
1953 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
1954 * Bug fix: The SPARC backend can now compile functions involving
1955 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
1956 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
1957 to a functions expecting a PATHNAME-DESIGNATOR.
1958 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
1959 lambda lists. (thanks to Alexey Dejneka)
1960 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
1961 functions so that EXPORTing the name of the class doesn't cause
1962 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
1963 to Antonio Martinez for reporting this)
1964 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
1965 constant-folded without failing an assertion. (thanks to Einar
1966 Floystad Dorum for reporting this)
1967 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
1968 types are now dealt with more correctly by the compiler.
1969 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
1970 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
1971 behaviour analogous to RENAME-FILE. This puts its behaviour more
1972 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
1974 * The fasl file version number has changed again. (because of the
1975 bug fix involving the names of PCL MAKE-INSTANCE functions)
1977 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
1978 * bug fix: Floating point exceptions are treated much more
1979 consistently on the x86/Linux and PPC/Linux platforms.
1980 * Array initialization with :INITIAL-ELEMENT is now much faster for
1981 cases when the compiler cannot open code the array creation, but
1982 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
1983 array accesses have also seen a speed increase.
1984 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
1985 specified. (This was at the root of some bad interactions between
1986 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
1988 * bug fix: Internal error arguments for undefined functions are now
1989 computed correctly on the PPC/Linux platform.
1990 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
1991 Raymond Toy's patch for CMU CL)
1992 * Support for the Solaris 9 operating environment has been included
1993 (thanks to Daniel Merritt)
1994 * A very ugly but hopefully complete draft of the missing FFI chapter
1995 of the manual has been created by reformatting the corresponding
1996 CMU CL manual chapter into (currently very ugly and incoherent)
1997 DocBook and bringing it up to date for SBCL behavior. Thus, the
1998 manual is now essentially complete, at least by my extreme
1999 once-and-only-once standards, whereby it's acceptable to refer to
2000 the doc strings of SB-EXT functions as the primary documentation.
2001 * The fasl file version number has changed again, due to cleanup of
2002 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2003 is no longer a static symbol.)
2005 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2006 * SBCL now builds with OpenMCL (version 0.12) as the
2007 cross-compilation host; also, more progress has been made toward
2008 bootstrapping under CLISP.
2009 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2011 * bug 158 fixed: The compiler can now deal with integer loop
2012 increments different from 1; fixing this turned out also to fix
2014 * bug 169 fixed: no more bogus warnings about using lexical bindings
2015 despite the presence of perfectly good SPECIAL declarations (thanks
2016 to David Lichteblau)
2017 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2018 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2019 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2021 * bug 180 fixed: Method combination specifications no longer ignore
2022 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2023 * bug fix: Structure type predicate functions now check their argument
2024 count as they should.
2025 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2026 correctly. (thanks to Pierre Mai)
2027 * minor incompatible change: The --noprogrammer option is deprecated
2028 in favor of the new --disable-debugger option, which is very similar.
2029 (The major difference is that it takes effect at a slightly different
2030 time at startup, causing handling of errors in --sysinit and
2031 --userinit files will be affected differently.) The
2032 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2033 been added to allow this functionality to be controlled from ordinary
2034 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2035 maintainers, who might want to run non-interactive scripts to
2036 build SBCL cores which will later be used interactively.)
2037 * minor incompatible change: The LOAD function no longer, when given
2038 a wild pathname to load, loads all files matching that pathname.
2039 Instead, an error of type FILE-ERROR is signalled.
2041 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2042 * bug 147 fixed: The compiler preserves its block link/count
2043 invariants more correctly now so that it doesn't crash. (thanks
2045 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2047 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2048 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2049 no-value-for-this-character as NIL (as specified by ANSI).
2050 * HOST-NAMESTRING on physical pathnames now returns a string that is
2051 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2052 (thanks to Christophe Rhodes)
2053 * The Alpha port handles icache flushing more correctly. (thanks to
2055 * More progress has been made toward bootstrapping under CLISP. (thanks
2056 to Christophe Rhodes)
2057 * The fasl file format has changed again, because dynamic loading
2058 on OpenBSD (which has non-ELF object files) motivated some cleanups
2059 in the way that foreign symbols are transformed and passed around.
2060 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2061 is no longer treated as whitespace by the reader, but instead as
2062 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2063 |A
\7fB|, instead of A as it used to.
2065 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2066 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2067 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2068 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2069 this as of 0.7.1.45, but was left out of the previous news section
2070 (thanks to Dan Barlow)
2071 * SBCL now runs on the Solaris operating system on SPARC architectures
2072 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2073 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2074 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2075 * SPARC backend cleanups, allowing builds of cores optimized for V8
2076 and V9 SPARCS, and also emission of code targeted to a particular
2077 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2079 * SBCL is closer to bootstrapping under CLISP, thanks to various
2080 fixes by Christophe Rhodes.
2081 * The fasl file format has changed again, to allow the compiler's
2082 INFO database to support symbol macros.
2083 * The user manual (in doc/) is formatted into HTML more nicely.
2084 (thanks to coreythomas)
2085 * The system is smarter about SUBTYPEP relationships, especially
2086 those involving NOT types (including types such as ATOM which are
2087 represented internally using NOT types). Thus SUBTYPEP is less
2088 likely to return (VALUES NIL NIL) in general, and in particular
2089 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2091 * The fasl file format has changed again, because the internal
2092 representation of types now includes a new slot to support the new
2093 SUBTYPEP-of-NOT-types logic.
2094 * (not a change in the main branch of SBCL, but a related prototype
2095 which can hopefully be merged into the main branch of SBCL in the
2096 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2097 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2098 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2099 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2100 dispatch macro character combinations. (thanks to Alexey Dejneka)
2101 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2102 that superficially look like logical namestrings correctly.
2103 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2105 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2106 default supplied-p) for &optional and &key arguments. (thanks to
2109 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2110 * incompatible change: The compiler is now less aggressive about
2111 tail call optimization, doing it only when (> SPACE DEBUG) or
2112 (> SPEED DEBUG). (This is an incompatible change because there are
2113 programs which relied on the old CMU-CL-style behavior to optimize
2114 away their unbounded recursion which will now die of stack overflow.)
2115 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2116 for non-GENCGC systems has been increased to 20M (since that
2117 seems much closer to the likely performance optimum for modern
2118 systems than the old 4M value was)
2119 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2120 and *DEBUG-PRINT-LEVEL*
2121 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2122 of CMU CL's support for SPARC, and various endianness and other
2123 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2124 * new syntactic sugar for the Unix command line: --load foo.bar is now
2125 an alternate notation for --eval '(load "foo.bar")'.
2127 ** The system now detects stack overflow and handles it gracefully,
2128 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2129 optimization settings. (This is a good thing in general, and
2130 its introduction in this version should be particularly timely
2131 for anyone whose code fails because of suppression of tail
2133 ** The system now hunts for the C variable "environ" in a more
2134 devious way, to avoid segfaults when the C library version differs
2135 between compile time and run time. (thanks to Christophe Rhodes)
2136 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2137 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2138 ** The compiler no longer issues bogus style warnings for undefined
2139 classes in the same source file as the DEFCLASSes which defined
2140 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2142 ** fixes in CONDITION class precedence list for undefined function
2143 errors (thanks to Alexei Dejneka)
2144 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2145 correctly. (thanks to Dan Barlow)
2146 ** portability fixes aiming at bootstrapping under CLISP (thanks
2147 to Dave McDonald and Christophe Rhodes)
2148 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2149 ** fixes in type translation and and type inference (thanks to
2151 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2152 ** various fixes in the new ports (thanks to Dan Barlow)
2153 * several changes related to debugging:
2154 ** suppression of tail recursion, as noted above
2155 ** stack overflow detection, as noted above
2156 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2157 is now the default. (For some time encapsulation has been more
2158 reliable than the breakpoint-based :ENCAPSULATE NIL
2159 implementation, at least on X86 systems; and I just noticed that
2160 encapsulation also seems closer to the spirit of the ANSI
2163 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
2165 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
2166 up properly again. (There was a packaging bug in 0.7.0 which
2167 left their definitions in SB-SYS::LOAD-FOREIGN and
2168 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
2169 vital for most things which interface to C-level interfaces,
2170 like extensions working with sockets or databases or
2171 Perl-compatible regexes or whatever, and the need to fix
2172 this bug is the main reason that 0.7.1 was released so
2174 ** DEFGENERIC is now choosier about the methods it redefines, so that
2175 reLOADing a previously-LOADed file containing DEFGENERICs does
2176 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
2177 cycle now works as it should. (thanks to Alexey Dejneka)
2178 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
2179 fixed by Christophe Rhodes. (He actually submitted this patch
2180 months ago, and I delayed until after 0.7.0.)
2181 ** Bug 111 (internal compiler confusion about runtime checks on
2182 FUNCTION types) was fixed by Alexey Dejneka.
2183 * Some internal cleanups (getting rid of variables which aren't
2184 needed now that the byte interpreter is gone) caused the fasl
2185 file format number to change again.
2187 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
2188 * major incompatible change: The default fasl file extension, i.e. the
2189 default extension for files produced by COMPILE-FILE, has changed
2190 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
2192 ** There are many changes in the implementation of the compiler.
2193 SBCL is now essentially a compiler-only implementation of ANSI
2194 Common Lisp. EVAL still "interprets" a few special cases, but
2195 almost all the interesting cases are handled by creating
2196 a LAMBDA expression, calling COMPILE on it, then calling
2197 FUNCALL on the result.
2198 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
2199 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
2200 Since the code is newer, there might still be some new bugs
2201 (though not as many as before Martin Atzmueller's fixes:-). But
2202 the new code is substantially simpler and clearer, and hopefully
2203 any remaining bugs will be simpler, less fundamental, and more
2204 fixable then the bugs in the old code.
2205 ** The revised compiler is still a little unsteady on its feet.
2207 *** The debugging information it produces (particularly the names
2208 of FUNCTION objects) is sometimes much less useful than what
2209 the old compiler produced.
2210 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
2211 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
2212 within a MACROLET) has been temporarily weakened.
2213 ** There are new compiler optimizations for various functions:
2214 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
2215 FIND-IF-NOT, POSITION-IF-NOT, and FILL
2216 *** the math functions TRUNCATE, FLOOR, and CEILING
2217 *** the function-of-all-trades COERCE
2218 Mostly these should be transparent, but there's one
2219 potentially-annoying problem (bug 117): when the compiler
2220 inline-expands a function and does type analysis on the result,
2221 it can create control paths which have type mismatches, and
2222 when it can't prove that those control paths aren't taken,
2223 it will issue WARNINGs about the type mismatches. This is
2224 a particular problem in practice for the new sequence functions.
2225 It's not clear how this should be fixed, and for now, a
2226 workaround is given in the entry for 117 in the BUGS file.
2227 ** (Because of the interaction between the two previous items --
2228 occasional inlining problems and new inline expansions -- some
2229 of the new sequence function optimizations won't really kick in
2230 completely until debugging information, and then inlining, are
2231 straightened out in some future version.)
2232 * minor incompatible changes:
2233 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
2234 DIRECTORY no longer implicitly promotes NIL slots of its
2235 pathname argument to :WILD. In particular, when you ask for the
2236 contents of a directory (which you used to be able to do without
2237 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
2238 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
2239 ** changes in behavior that ANSI explicitly defines to be
2240 implementation dependent:
2241 *** The new compiler-only implementation still conforms with ANSI,
2242 but acts a little different than before. Besides the obvious
2243 changes in performance tradeoffs (that the cost per form passed
2244 to EVAL has gone up, and the cost per form executed by EVAL
2245 has gone down), the behavior of the system changes a little
2246 because there are no longer any interpreted function objects.
2247 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
2248 e.g. doing COMPILE on the output of interactive DEFUN is
2250 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
2252 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
2253 has changed from (:CL) to NIL.
2254 *** The CHAR-NAME of unprintable ASCII characters which, unlike
2255 e.g. #\Newline and #\Tab, don't have names specified in the
2256 ANSI Common Lisp standard, is now based on their ASCII symbolic
2257 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
2258 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
2259 are no longer used for output.
2260 ** changes in internal implementation constants:
2261 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
2262 4 million. (If your application spends a lot of time GCing and
2263 you have a lot of RAM, you might want to experiment with
2264 increasing it even more.)
2265 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
2266 However, almost all old code should still continue to work without
2267 immediate update, as SB-C-CALL is now a (deprecated) nickname
2269 ** Old operator names in the style DEF-FOO are now deprecated in
2270 favor of new corresponding names DEFINE-FOO, for consistency with
2271 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
2272 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
2273 internal symbols, but a few supported extensions like
2274 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
2275 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
2276 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
2277 etc. as you get deeper into recursive calls to the debugger
2278 command loop, instead of the old "5]", "5]]", "5]]]"
2279 sequence. (I was motivated to do this when squabbles between
2280 ILISP and SBCL left me very deeply nested in the debugger. In the
2281 short term, this change will probably provoke more ILISP/SBCL
2282 squabbles, but hopefully it will be an improvement in the long run.)
2283 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
2284 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
2285 function, since declaiming return types involving aliens is
2286 (1) annoyingly messy to do by hand and (2) vital to efficient
2287 compilation of code which calls such functions.
2288 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
2289 longer reexported by the SB-EXT package. They're solely useful
2290 for alien code, so it seems more logical that you should get
2291 them from the SB-ALIEN package, not in SB-EXT.
2292 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
2293 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
2294 features. Instead, the code that they used to control is always
2295 built into the system.
2296 * many other bug fixes
2297 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
2298 advantage of the new EVAL-WHEN stuff and to clean them up in
2299 general, and they are now more ANSI-compliant in a number of
2300 ways. Martin Atzmueller is responsible for a lot of this.
2301 ** Besides the cleanups discussed above, Martin Atzmueller fixed
2303 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
2304 *** correct ERROR type for various file operations
2305 *** some fixes for Lisp streams
2306 *** DEFMETHOD syntax checking
2307 *** changing old weird representation of debug information as
2308 strings (which, among their other deficiencies, don't transform
2309 correctly when you rename packages, and don't change their
2310 print representation when you change things like *PACKAGE*
2311 and *PRINT-LENGTH*) to symbols and lists of symbols
2312 He also made several improvements and fixed several bugs in DESCRIBE.
2313 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
2315 *** misbehavior of WRITE-STRING/WRITE-LINE
2316 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
2317 and several other LOOP problems as well
2318 *** DIRECTORY when similar filenames are present
2319 *** DEFGENERIC with :METHOD options
2320 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
2321 *** bug in the optimization of ARRAY-ELEMENT-TYPE
2322 *** argument ordering in FIND with :TEST option
2323 *** mishandled package designator argument in APROPOS-LIST
2324 *** various problems in the backquote readmacro
2325 *** a bug in APROPOS
2326 *** probably some others that I'm not describing very well here,
2327 since the CVS log documents them by reference to sbcl-devel
2328 messages, and the SourceForge archives aren't working well.:-(
2329 ** Dan Barlow improved the Alpha port (and is making progress on the
2330 PPC port, for those of you who think different).
2331 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
2332 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
2333 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
2334 continues to work on the SPARC port (for those of you in a position
2335 to look down upon our little PC-compatible boxes from a great height).
2336 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
2337 and uses that copy, rather than the current dynamic value, when
2338 it's trying to decide whether to truncate output. Thus e.g.
2339 (let ((*print-lines* 50))
2340 (pprint-logical-block (stream nil)
2342 (let ((*print-lines* 8))
2343 (print (aref possiblybigthings i) stream)))))
2344 should now truncate the logical block only at 50 lines, instead of
2345 often truncating it at 8 lines, as it did before.
2346 * The doc/cmucl/ directory, containing old CMU CL documentation
2347 from the time of the fork, is no longer part of the base system.
2348 SourceForge has shut down its anonymous FTP service, and with it
2349 my original plan for distributing the old CMU CL documentation
2350 there. For now, if you need these files you can download an old
2351 SBCL source release and extract them from it.
2352 * The fasl file version number changed again, for dozens of reasons,
2353 some of which are apparent above.
2355 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
2356 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
2357 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
2358 patch, so that DISASSEMBLE output is much nicer.
2359 * The code in the SB-PROFILE package now seems reasonably stable.
2360 I still haven't decided what the final interface should look like
2361 (I'd like PROFILE to interact cleanly with TRACE, since both
2362 facilities use function encapsulation) but if you have a need
2363 for profiling now, you can probably use it successfully with
2364 the current CMU-CL-style interface.
2365 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
2366 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
2367 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
2368 link now returns the dangling link itself, and for similar
2369 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
2370 link itself. (In these cases the old code signalled an error and
2371 looped endlessly, respectively.) Thus, DIRECTORY now works even
2372 in the presence of dangling and cyclic symbolic links.
2373 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
2374 is now a supported extension again, since the consensus on
2375 sbcl-devel was that it can be useful for ordinary development
2376 work, not just for debugging SBCL itself.
2377 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
2378 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
2379 that currently-defined functions might be redefined later with
2380 different return types.
2381 * Hash tables can be printed readably, as inspired by CMU CL code
2382 of Eric Marsden and SBCL code of Martin Atzmueller.
2383 * better error handling in CLOS method combination, thanks to
2384 Martin Atzmueller porting Pierre Mai's CMU CL patches
2385 * more overflow fixes for >16Mbyte I/O buffers
2386 * A bug in READ has been fixed, so that now a single Ctrl-D
2387 character suffices to cause end-of-file on character streams.
2388 In particular, now you only need one Ctrl-D at the command
2389 line (not two) to exit SBCL.
2390 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
2392 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
2393 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
2394 does the right thing.
2395 * The implementation of some type tests, especially for CONDITION
2396 types, is now tidier and maybe faster, due to CMU CL code
2397 originally by Douglas Crosher, ported by Martin Atzmueller.
2398 * Some math functions have been fixed, and there are new
2399 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
2400 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
2401 * (There are also some new optimizers in contrib/*-extras.lisp. Those
2402 aren't built into sbcl-0.6.13, but are a sneak preview of what's
2403 likely to be built into sbcl-0.7.0.)
2404 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2405 CL, ported to SBCL by Martin Atzmueller)
2406 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2407 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2408 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2409 * There's a new slam.sh hack to shorten the edit/compile/debug
2410 cycle for low-level changes to SBCL itself, and a new
2411 :SB-AFTER-XC-CORE target feature to control the generation of
2412 the after-xc.core file needed by slam.sh.
2413 * minor incompatible change: The ENTRY-POINTS &KEY argument to
2414 COMPILE-FILE is no longer supported, so that now every function
2415 gets an entry point, so that block compilation looks a little
2416 more like the plain vanilla ANSI section 3.2.2.3 scheme.
2417 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
2418 returns the number of bytes consed since the system started,
2419 rather than the number consed since the first time the function
2420 was called. (The new definition parallels ANSI functions like
2421 CL:GET-INTERNAL-RUN-TIME.)
2422 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
2423 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
2424 supported. Now DIRECTORY always does the abstract Common-Lisp-y
2425 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
2426 * Fasl file version numbers are now independent of the target CPU,
2427 since historically most system changes which required version
2428 number changes have affected all CPUs equally. Similarly,
2429 the byte fasl file version is now equal to the ordinary
2432 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
2433 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
2434 is no longer recognized. I apologize for this, because it was
2435 listed in SB-EXT as a supported extension, but I found that
2436 its existing behavior was poorly specified, as well as incorrectly
2437 specified, and it looked like too much of a mess to straighten it
2438 out. I have enough on my hands trying to get ANSI stuff to work..
2439 * many patches ported from CMU CL by Martin Atzmueller, with
2440 half a dozen bug fixes in pretty-printing and the debugger, and
2441 half a dozen others elsewhere
2442 * fixed bug 13: Floating point infinities are now supported again.
2443 They might still be a little bit flaky, but thanks to bug reports
2444 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
2445 as flaky as they were.
2446 * The --noprogrammer command line option is now supported. (Its
2447 behavior is slightly different in detail from what the old man
2448 page claimed it would do, but it's still appropriate under the
2449 same circumstances that the man page talks about.)
2450 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
2451 are now supported, and enabled by default. Thus, the compiler can
2452 handle many floating point and complex operations much less
2453 inefficiently. (Thus e.g. you can implement a complex FFT
2455 * The compiler now detects type mismatches between DECLAIM FTYPE
2456 and DEFUN better, and implements CHECK-TYPE more correctly, and
2457 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
2458 thanks to patches from Martin Atzmueller.
2459 * various fixes to make the cross-compiler more portable to
2460 ANSI-conforming-but-different cross-compilation hosts (notably
2461 Lispworks for Windows, following bug reports from Arthur Lemmens)
2462 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
2463 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
2464 fixed thanks to Pierre Mai's CMU CL patches.
2465 * fixes to keep the system from overflowing internal counters when
2466 it tries to use i/o buffers larger than 16M bytes
2467 * fixed bug 45a: Various internal functions required to support
2468 complex special functions have been merged from CMU CL sources.
2469 (When I was first setting up SBCL, I misunderstood a compile-time
2470 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
2471 * improved support for type intersection and union, fixing bug 12
2472 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
2473 more obscure bugs as well
2474 * some steps toward byte-compiling non-performance-critical
2475 parts of the system, courtesy of patches from Martin Atzmueller
2476 * Christophe Rhodes has made some debian packages of sbcl at
2477 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
2478 From his sbcl-devel e-mail of 2001-04-08 they're not completely
2479 stable, but are nonetheless usable. When he's ready, I'd be happy
2480 to add them to the SourceForge "File Releases" section. (And if
2481 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
2482 * new fasl file format version number (because of changes in
2483 internal representation of (OR ..) types to accommodate the new
2484 support for (AND ..) types, among other things)
2486 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
2487 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
2489 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
2491 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
2492 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
2493 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
2494 * DESCRIBE now works on structure objects again.
2495 * Most function call argument type mismatches are now handled as
2496 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
2497 know whether the function will be redefined before the call is
2498 executed. (The compiler could flag local calls with full WARNINGs,
2499 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
2500 it doesn't keep track of enough information to know whether calls
2501 are local in this sense.)
2502 * Compiler output is now more verbose, with messages truncated
2503 later than before. (There should be some supported way for users
2504 to override the default verbosity, but I haven't decided how to
2505 provide it yet, so this behavior is still controlled by the internal
2506 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
2507 src/compiler/ir1util.lisp.)
2508 * Fasl file format version numbers have increased again, because
2509 support for the Gray streams extension changes the layout of the
2510 system's STREAM objects.
2511 * The Gray subclassable streams extension now works, thanks to a
2512 patch from Martin Atzmueller.
2513 * The full LOAD-FOREIGN extension (not just the primitive
2514 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
2515 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
2516 but like most other programs, it defaults to copying the Unix
2517 environment from the original process instead of starting the
2518 new process in an empty environment.
2519 * Extensions which manipulate the Unix environment now support
2520 an :ENVIRONMENT keyword option which doesn't smash case or
2521 do other bad things. The CMU-CL-style :ENV option is retained
2522 for porting convenience.
2523 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
2524 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
2526 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
2528 * A patch from Martin Atzmueller seems to have solved the SIGINT
2529 problem, and as far as we know, signal-handling now works cleanly.
2530 (If you find any new bugs, please report them!)
2531 * The system no longer defaults Lisp source file names to types
2532 ".l", ".cl", or ".lsp", but only to ".lisp".
2533 * The compiler no longer uses special default file extensions for
2534 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
2535 seems to expect a single default extension for all compiled code,
2536 and there's no compelling reason to try to stretch the standard
2537 to allow two different extensions.) Instead, byte-compiled files
2538 default to the same extension as native-compiled files.
2539 * Fasl file format version numbers have increased again, because
2540 a rearrangement of internal implementation packages made some
2541 dumped symbols in old fasl files unreadable in new cores.
2542 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
2543 many fewer weird special cases.
2544 * Bug #17 (differing COMPILE-FILE behavior between logical and
2545 physical pathnames) has been fixed, and some related misbehavior too,
2546 thanks to a patch from Martin Atzmueller.
2547 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
2548 by Tim Moore, ported to SBCL by Martin Atzmueller.
2549 * Martin Atzmueller fixed several filesystem-related problems,
2550 including bug #36, in part by porting CMU CL patches, which were
2551 written in part by Paul Werkowski.
2552 * More compiler warnings in src/runtime/ are gone, thanks to
2553 more patches from Martin Atzmueller.
2554 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
2557 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
2559 * DESCRIBE now works on CONDITION objects.
2560 * The debugger now handles errors which arise when trying to print
2561 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
2563 * The build system now uses an additional file, customize-target-features.lisp,
2564 to allow local modifications to the target *FEATURES* list. (The point of
2565 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
2566 debugging features enabled, without having to worry about propagating it
2567 into everyone's system when I do a "cvs update".) When no
2568 customize-target-features.lisp file exists, the target *FEATURES* list
2569 should be constructed the same way as before.
2570 * fixed bugs in DEFCONSTANT ANSI-compatibility:
2571 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
2572 warn about behavior which is undefined under the ANSI spec. Note: This
2573 is specified by ANSI, but it's not very popular with programmers.
2574 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
2575 macro in the SBCL sources for an example of a workaround which you
2576 might use to make portable ANSI-standard code which does what you want.
2577 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
2578 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
2579 when it's used as a non-toplevel form. (This is required in order
2580 to implement the DEFCONSTANT-EQX macro.)
2581 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
2582 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
2583 funny things, due to bugs in the implementation of EVAL-WHEN
2584 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
2585 non-toplevel DEFCONSTANTs are uncommon.)
2586 * The core file version number and fasl file version number have been
2587 incremented, because the old noncompliant DEFCONSTANT behavior involved
2588 calling functions which no longer exist, and because I also took the
2589 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
2590 * fixed bug 1 (error handling before read-eval-print loop starts), and
2591 redid debugger restarts and related debugger commands somewhat while
2593 ** The QUIT debugger command is gone, since it did something
2594 rather different than the SB-EXT:QUIT command, and since it never
2595 worked properly outside the main toplevel read/eval/print loop.
2596 Invoking the new TOPLEVEL restart provides the same functionality.
2597 ** The GO debugger command is also gone, since you can just invoke
2598 the CONTINUE restart directly instead.
2599 ** The TOP debugger command is also gone, since it's redundant with the
2600 FRAME 0 command, and since it interfered with abbreviations for the
2602 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
2604 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
2605 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
2606 some porting work by Martin Atzmueller)
2607 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
2608 with a boatload of patches which he ported to SBCL. Now that those
2610 ** The system tries to make sure that its low-priority messages
2611 are prefixed by semicolons, to help people who like to use
2612 syntax highlighting in their ILISP buffer. (This patch
2613 was originally due to Raymond Toy.)
2614 ** The system now optimizes INTEGER-LENGTH better, thanks to more
2615 patches originally written by Raymond Toy.
2616 ** The compiler understands coercion between single-value and
2617 multiple-VALUES type expressions better, getting rid of some very
2618 weird behavior, thanks to patches originally by Robert MacLachlan
2619 and Douglas Crosher.
2620 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
2621 lambda lists, thanks to a patch originally by Pierre Mai.
2622 ** The system no longer bogusly warns about "abbreviated type
2624 ** The compiler gets less confused by inlining and RETURN-FROM,
2625 thanks to some patches originally by Tim Moore.
2626 ** The system no longer hangs when dumping circular lists to fasl
2627 files, thanks to a patch originally from Douglas Crosher.
2628 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
2629 undefined function error.
2630 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
2631 in structure slot initforms) for now, documented workaround instead:-|
2632 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
2633 * fixed bug 5: added stubs for various Gray stream functions called
2634 in the not-a-CL:STREAM case, so that even when Gray streams aren't
2635 installed, at least appropriate type errors are generated
2636 * fixed bug 8: better reporting of various PROGRAM-ERRORs
2637 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
2638 consistently in DEFMETHOD forms.
2639 * removed bug 21 from BUGS, since Martin Atzmueller points out that
2640 it doesn't seem to affect SBCL after all
2641 * The C runtime system now builds with better optimization and many
2642 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
2644 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
2646 * The system is now under CVS at SourceForge (instead of the
2647 CVS repository on my home machine).
2648 * The new signal handling code has been tweaked to treat register
2649 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
2650 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
2651 downstream, e.g. in debug-int.lisp, has implicit dependencies
2652 on the unsignedness of integer representation of machine words,
2653 and that caused the system to bomb out with infinite regress
2654 when trying to recover from type errors involving signed values,
2655 e.g. (BUTLAST '(1 2 3) -1).)
2656 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
2657 (This was one of the bugs Peter Van Eynde reported back in July.)
2658 * The system now uses code inspired by Colin Walters' O(N)
2659 implementation of MAP (from the cmucl-imp@cons.org mailing
2660 list, 2 September 2000) when it can't use a DEFTRANSFORM to
2661 inline the MAP operation, and there is more than one
2662 sequence argument to the MAP call (so that it can't just
2663 do ETYPECASE once and for all based on the type of the
2664 single sequence argument). (The old non-inline implementation
2665 of the general M-argument sequence-of-length-N case required
2666 O(M*N*N) time when any of the sequence arguments were LISTs.)
2667 * The QUIT :UNIX-CODE keyword argument has been renamed to
2668 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
2669 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
2671 * Raymond Wiker's patches to port dynamic loading from Linux to
2672 FreeBSD have been added.
2673 * The BUGS file is now more nearly up to date, thanks in large part
2674 to Martin Atzmueller's review of it.
2675 * The debugger now flushes standard output streams before it begins
2676 its output ("debugger invoked" and so forth).
2677 * The core version number and fasl file version number have both
2678 been incremented, because of incompatible changes in the layout
2680 * FINISH-OUTPUT is now called more consistently on QUIT. (It
2681 used to not be called for a saved Lisp image.)
2682 * Martin Atzmueller's version of a patch to fix a compiler crash,
2683 as posted on sbcl-devel 13 September 2000, has been installed.
2684 * Instead of installing Martin Atzmueller's patch for the
2685 compiler transform for SUBSEQ, I deleted the compiler transform,
2686 and transforms for some similar consing operations.
2687 * A bug in signal handling which kept TRACE from working on OpenBSD
2689 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
2690 away by constant folding
2691 * The system now defines its address space constants in one place
2692 (in the Lisp sources), and propagates them automatically elsewhere
2693 (through GENESIS and the sbcl.h file). Therefore, patching the
2694 address map is less unnecessarily tedious and error-prone. The
2695 Lisp names of address space constants have also been systematized.
2696 * CVS tags like dollar-Header-dollar have been removed from
2697 the sources, because they have never saved me trouble and
2698 they've been source of trouble working with patches and other
2699 diff-related operations.
2700 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
2701 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
2703 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
2705 * The system has been ported to OpenBSD.
2706 * The system now compiles with a simple "sh make.sh" on the systems
2707 that it's supported on. I.e., now you no longer need to tweak
2708 text in the target-features.lisp-expr and symlinks in src/runtime/
2709 by hand, the make.sh takes care of it for you.
2710 * The system is no longer so grossly inefficient when compiling code
2711 involving vectors implemented as general (not simple) vectors (VECTOR T),
2712 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
2713 which dares to use the various sequence functions on non-simple
2714 vectors, takes less of a performance hit.
2715 * There is now a primitive type predicate VECTOR-T-P
2716 to test for the (VECTOR T) type, so that e.g.
2717 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
2718 can now be compiled with some semblance of efficiency. (The old code
2719 turned the type declaration into a full call to %TYPEP at runtime!)
2720 * AREF on (VECTOR T) is still not fast, since it's still compiled
2721 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
2722 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
2723 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
2724 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
2725 without making full calls to SUBTYPEP at runtime.
2726 (Some analogous efficiency issues for non-simple vectors specialized to
2727 element types other than T, or for non-simple multidimensional arrays,
2728 have not been addressed. They could almost certainly be handled the
2729 same way if anyone is motivated to do so.)
2730 * The changes in array handling break binary compatibility, so
2731 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
2732 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
2733 instead of (VALUES T T).
2734 * By following the instructions that Dan Barlow posted to sbcl-devel
2735 on 2 July 2000, I was able to enable primitive dynamic object
2736 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
2737 functionality is not implemented (since it calls ld to resolve
2738 library references automatically, requiring RUN-PROGRAM for its
2739 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
2740 try to resolve library references) is now supported.
2741 * The system now flushes the standard output streams when it terminates,
2742 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
2743 them at several other probably-convenient times, e.g. in each pass of
2744 the toplevel read-eval-print loop, and after evaluating a form given
2745 as an "--eval" command-line option. (These changes were motivated by a
2746 discussion of stream flushing issues on cmucl-imp in August 2000.)
2747 * The source transform for TYPEP of array types no longer assumes
2748 that an array whose element type is a not-yet-defined type
2749 is implemented as an array of T, but instead punts, so that the
2750 type will be interpreted at runtime.
2751 * There is now some support for cross-compiling in make.sh: each of
2752 the phases of make.sh has its own script. (This should be transparent
2753 to people doing ordinary, non-cross-compile builds.)
2754 * Since my laptop doesn't have hundreds of megabytes of memory like
2755 my desktop machine, I became more motivated to do some items on
2756 my to-do list in order to reduce the size of the system a little:
2757 ** Arrange for various needed-only-at-cold-init things to be
2758 uninterned after cold init. To support this, those things have
2759 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
2760 symbols with such names are now uninterned after cold init).
2761 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
2762 fasl files for cold load.
2763 ** Remove the old compiler structure pooling code (which used to
2764 be conditional on the target feature :SB-ALLOC) completely.
2765 ** Redo the representation of some data in cold init to be more compact.
2766 (I also looked into supporting byte compiled code at bootstrap time,
2767 which would probably reduce the size of the system a lot, but that
2768 looked too complicated, so I punted for now.)
2769 * The maximum signal nesting depth in the src/runtime/ support code has
2770 been reduced from 4096 to 256. (I don't know any reason for the very
2771 large old value. If the new smaller value turns out to break something,
2772 I'll probably just bump it back up.)
2773 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
2775 * Many, many bugs reported by Peter Van Eynde have been added to
2776 the BUGS list; some have even been fixed.
2777 * While enabling dynamic object file loading, I tried to make the
2778 code easier to understand, renaming various functions and variables
2779 with less ambiguous names, and changing some function calling
2780 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
2781 * While trying to figure out how to do the OpenBSD port, I tried to
2782 clean up some of the code in src/runtime/. In particular, I dropped
2783 support for non-POSIX signal handling, added various comments,
2784 tweaked the code to reduce the number of compilation warnings, and
2785 renamed some files to increase consistency.
2786 * To support the new automatic configuration functionality in make.sh,
2787 the source file target-features.lisp-expr has been replaced with the
2788 source file base-target-features.lisp-expr and the machine-generated
2789 file local-target-features.lisp-expr.
2790 * fixed a stupid quoting error in make.sh so that using CMU CL
2791 "lisp -batch" as cross-compilation host works again
2793 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
2795 * DESCRIBE no longer tries to call itself recursively to describe
2796 bound/fbound values, so that it no longer fails on symbols which are
2797 bound to themselves (like keywords, T, and NIL).
2798 * DESCRIBE now works on generic functions.
2799 * The printer now prints less-screwed-up representations of closures
2800 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
2801 * A private symbol is used instead of the :EMPTY keyword previously
2802 used to mark empty slots in hash tables. Thus
2803 (DEFVAR *HT* (MAKE-HASH-TABLE))
2804 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
2805 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
2806 now does what ANSI says that it should. (You can still get
2807 similar noncompliant behavior if bang on the hash table
2808 implementation with all the symbols you get back from
2809 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
2810 This breaks binary compatibility, since tests for equality to
2811 :EMPTY are wired into things like the macroexpansion of
2812 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
2814 * There's now a minimal placeholder implementation for CL:STEP,
2815 as required by ANSI.
2816 * An obscure bug in the interaction of the normal compiler, the byte
2817 compiler, inlining, and structure predicates has been patched
2818 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
2819 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
2821 * Missing ordinary arguments in a macro call are now detected even
2822 when the macro lambda list contains &KEY or &REST.
2823 * The debugger no longer complains about encountering the top of the
2824 stack when you type "FRAME 0" to explicitly instruct it to go to
2825 the top of the stack. And it now prints the frame you request even
2826 if it's the current frame (instead of saying "You are here.").
2827 * As specified by ANSI, the system now always prints keywords
2828 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
2830 * The default initial SIZE of HASH-TABLEs is now smaller.
2831 * Type information from CLOS class dispatch is now propagated
2832 into DEFMETHOD bodies, so that e.g.
2833 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2835 is now basically equivalent to
2836 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2837 (DECLARE (TYPE SINGLE-FLOAT X))
2839 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
2840 operation, without having to do run-time type dispatch.
2841 * The macroexpansion of DEFMETHOD has been tweaked so that it has
2842 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
2843 * Since I don't seem to be making big file reorganizations very often
2844 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
2845 is overflowing my ability to conveniently back them up), I've finally
2846 checked the system into CVS. (The CVS repository is on my home system,
2847 not at SourceForge -- putting it on SourceForge might come later.)
2848 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
2849 high-level GC-NOTIFY-FOO functions send their output. (There's
2850 still very little control of where low-level verbose GC functions
2851 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
2852 less than it used to -- the GC-NOTIFY-FOO functions are now under
2853 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
2854 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
2855 in only one place in the source code, and propagates it automatically
2856 everywhere that it's needed. Thus e.g. when I bump the version from
2857 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
2858 * The C source files now include boilerplate legalese and documentation
2859 at the head of each file (just as the Lisp source files already did).
2860 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
2861 to his page will be replaced with a link to his new CLiki service.
2863 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
2865 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
2866 * The build process now looks for GNU make under the default name "gmake",
2867 instead of "make" as it used to. If GNU make is not available as "gmake"
2868 on your system, you can change this default behavior by setting the
2869 GNUMAKE environment variable.
2870 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
2871 can build without error under CMU CL.
2873 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
2875 * There is now a partial SBCL user manual (with some new text and some
2876 text cribbed from the CMU CL manual).
2877 * The beginnings of a profiler have been added (starting with the
2878 CMU CL profiler and simplifying and cleaning up). Eventually the
2879 main interface should be through the TRACE macro, but for now,
2880 it's still accessed through vaguely CMU-CL-style functions and macros
2881 exported from the package SB-PROFILE.
2882 * Some problems left over from porting CMU CL to the new
2883 cross-compilation bootstrap process have been cleaned up:
2884 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
2885 instead of SB!XC:DEFMACRO, compounded by an oversight on my
2886 part when getting rid of the compiler *BACKEND* stuff.)
2887 ** The value of *NULL-TYPE* was screwed up, because it was
2888 being initialized before the type system knew the final
2889 definition of the 'NULL type. This screwed up several key
2890 optimizations in the compiler, causing inefficiency in all sorts
2891 of places. (I found it because I wanted to understand why
2892 GET-INTERNAL-RUN-TIME was consing.)
2893 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
2894 PROCLAIM FTYPE information. Unfortunately this broke binary
2895 compatibility again, since now the forms output by DEFGENERIC
2896 to refer to functions which didn't exist in 0.6.3.
2897 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
2898 can use the new (as of 0.6.3) transform for SOME into MAP into
2900 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
2901 values to (INTEGER 0 1000000), so that the time code will no longer
2902 occasionally get blown up by Linux returning 1000000 microseconds
2903 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
2904 its output conform to the ANSI spec. (Alas, this makes its output
2905 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
2906 * A full call to MAP NIL with a single sequence argument no longer conses.
2907 * fixes to problems pointed out by Martin Atzmueller:
2908 * The manual page no longer talks about multiprocessing as though
2909 it were currently supported.
2910 * The ILISP support patches have been removed from the distribution,
2911 because as of version 5.10.1, ILISP now supports SBCL without us
2912 having to maintain patches.
2913 * added a modified version of Raymond Toy's recent CMU CL patch for
2914 EQUALP comparison of HASH-TABLE
2916 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
2918 * The system still can't cross-compile itself with
2919 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
2920 entails), but at least it can compile more of itself that way
2921 than it used to be able to, and various buglets which were uncovered
2922 by trying to cross-compile itself that way have now been fixed.
2923 * This release breaks binary compatibility again. This time
2924 at least I've incremented the FASL file format version to 2, so that the
2925 problem can be detected reliably instead of just causing weird errors.
2926 * various new style warnings:
2927 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
2928 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
2929 ** using the lexical binding of a variable named in the *FOO* style
2930 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
2931 as specified by ANSI.
2932 * *RANDOM-STATE* is no longer automatically initialized from
2933 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
2934 default behavior of the system is to repeat its behavior every time
2935 it's run. If you'd like to change this behavior, you can always
2936 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
2937 old convention there was no comparably easy way to get the system to
2938 repeat its behavior every time it was run.
2939 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
2940 FTYPE declarations has been removed, in favor of their ANSI
2941 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
2942 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
2943 the types of their sequence arguments can be determined at compile time.
2944 This is done through a new open code expansion for MAP which eliminates
2945 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
2946 argument types can be determined at compile time.
2947 * The optimizer now transforms COERCE into an identity operation when it
2948 can prove that the coerced object is already of the correct type. (This
2949 can be a win for machine generated code, including the output of other
2950 optimization transforms, such as the MAP transform above.)
2951 * Credit information has been moved from source file headers into CREDITS.
2952 * Source file headers have been made more standard.
2953 * The CASE macro now compiles without complaining even when it has
2956 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
2958 * (Note that the way that the PCL macroexpansions were rewritten
2959 to accommodate the change in DEFGENERIC below breaks binary
2960 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
2961 not run under sbcl-0.6.2. Once we get out of alpha releases,
2962 i.e. hit release 1.0.0, we'll probably try to maintain binary
2963 compatibility between maintenance releases, e.g. between sbcl-1.4.3
2964 and sbcl-1.4.4. Until then, however, it might be fairly common
2965 for maintenance releases to break binary compatibility.)
2966 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
2968 * The reporting of unhandled signals has been changed to print some
2969 explanatory text as well as the report form. (Previously only
2970 the report form was printed.)
2971 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
2972 it defines, so that the compiler no longer issues undefined function
2973 warnings for compiled-but-not-yet-loaded generic functions.
2974 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
2975 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
2976 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
2977 section of the ANSI spec are supported.
2978 * The "" nickname for the "KEYWORD" package has been removed.
2979 The reader still handles symbol tokens which begin with a package marker
2980 as keywords, but it doesn't expose its mechanism for doing so in the
2981 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
2982 * The system now issues STYLE-WARNINGs for contradictory TYPE
2983 proclamations. (Warnings for contradictory FTYPE proclamations would
2984 be nice too, but those can't be done usefully unless the type system
2985 is made smarter about FUNCTION types.)
2986 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
2987 systematized, so that "*target-*.lisp is supposed to exist only on the
2988 target and imply that there's a related file which exists on the
2989 host, and *host-*.lisp is supposed to exist only on the host and imply
2990 that there's a related file which exists on the target. This involves a
2991 lot of renaming. Hopefully the acute confusion caused by the renaming
2992 will be justified by the reduction in chronic confusion..
2993 ** runtime-type.lisp -> early-target-type.lisp
2994 ** target-type.lisp -> late-target-type.lisp
2995 ** early-host-format.lisp -> early-format.lisp
2996 ** late-host-format.lisp -> late-format.lisp
2997 ** host-error.lisp -> misc-error.lisp
2998 ** early-error.lisp -> early-target-error.lisp
2999 ** late-error.lisp -> late-target-error.lisp
3000 ** host-defboot.lisp -> early-defboot.lisp
3001 ** code/misc.lisp -> code/target-misc.lisp
3002 ** code/host-misc.lisp -> code/misc.lisp
3003 ** code/numbers.lisp -> code/target-numbers.lisp
3004 ** code/early-numbers.lisp -> numbers.lisp
3005 ** early-host-type.lisp -> early-type.lisp
3006 ** late-host-type.lisp -> late-type.lisp
3007 ** host-typep.lisp -> typep.lisp
3008 ** load.lisp -> target-load.lisp
3009 ** host-load.lisp -> load.lisp
3010 ** host-disassem.lisp -> disassem.lisp
3011 ** host-insts.lisp -> insts.lisp
3012 ** byte-comp.lisp -> target-byte-comp.lisp
3013 ** host-byte-comp.lisp -> byte-comp.lisp
3014 ** host-signal.lisp -> signal.lisp
3015 ** host-defstruct.lisp -> defstruct.lisp
3016 ** late-target-type.lisp -> deftypes-for-target.lisp
3017 Furthermore, several other previously target-only files foo.lisp (e.g.
3018 hash-table.lisp and random.lisp) have been split into a target-and-host
3019 foo.lisp file and a target-only target-foo.lisp file, with their key type
3020 definitions in the target-and-host part, so that the cross-compiler will
3021 know more about target types.
3022 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3023 gone away. In their place are various *BACKEND-FOO* variables
3024 corresponding to the slots of the old structure.
3025 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3026 into the target SBCL has been fixed.
3027 * The chill.lisp system for loading cold code into a running SBCL
3029 * Support for the CMU CL "scavenger hook" extension has been removed.
3030 (It was undocumented and unused in the CMU CL sources that SBCL was
3031 derived from, and stale in sbcl-0.6.1.)
3032 * Various errors in the cross-compiler type system were detected
3033 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3034 (enabling various consistency checks). Many of them were fixed,
3035 but some hard problems remain, so the compiler is back to
3036 running without *TYPE-SYSTEM-INITIALIZED* for now.
3037 * As part of the cross-compiler type system cleanup, I implemented
3038 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3039 * I have started adding UNCROSS calls throughout the type system
3040 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3041 on cross-compiler input files will be able to go away, and various
3043 * CONSTANTP now returns true for quoted forms (as explicitly required
3046 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3048 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3049 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3050 (MAKE-LIST -1). In the longer term, it ought to become true
3051 that declarations are assertions even at SAFETY 1. For now, it's not
3052 quite true even at SAFETY 3, but it's at least more nearly true..
3053 (Note that this change seems to increases the size of the system by
3054 O(5%) and to decrease the speed of the compiler by 20% or more.)
3055 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3056 for the problem of printing dozens of lines of distracting information
3057 about low-level system machinery as part of the top stack frame
3058 on entry to the debugger when an undefined function was called.
3059 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3060 is not reset to COMMON-LISP-USER.
3061 * Compilation of stuff related to dyncount.lisp has been made conditional
3062 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3063 smaller. The various dyncount-related symbols have been moved into
3064 a new "SB-DYNCOUNT" package.
3065 * tty-inspect.lisp has been renamed to inspect.lisp.
3066 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3067 feature has gone away. (When we eventually port to other flavors of
3068 libc and/or Unix, we'll try to make the differences between flavors
3069 invisible at the user level.)
3070 * Various other *FEATURES* tags, and/or their associated conditionals,
3071 have been removed if obsolescent, or given better documentation, or
3072 sometimes given more-mnemonic names.
3074 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3076 * tidied up "make.sh" script
3077 * tidied up system directory structure
3078 * better "clean.sh" behavior
3079 * added doc/FOR-CMUCL-DEVELOPERS
3080 * many many small tweaks to output format, e.g. removing possibly-confusing
3081 trailing #\. character in DESCRIBE-INSTANCE
3082 * (EQUALP #\A 'A) no longer signals an error.
3083 * new hashing code, including EQUALP hashing
3084 * tidied up Lisp initialization and toplevel
3085 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3086 * command line argument processing
3087 * added POSIX-GETENV function to deal with Unix-ish environment variables
3088 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3089 terminating SBCL on EOF
3090 * non-verbose GC by default
3091 * There is no more "sbcl" shell script; the sbcl file is now the C
3092 runtime executable (just like CMU CL).
3093 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3095 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3096 symbol and package information as Lisp native symbol and package objects
3097 instead of strings naming symbols and strings naming packages. This way,
3098 whenever packages are renamed (as in warm init), debug information is
3099 transformed along with everything else.
3100 * tweaked the optimization policy declarations which control the building
3101 of SBCL itself. Now, among other things, the system no longer saves
3102 source location debugging information. (This helps two problems at once
3103 by reducing SBCL size and by keeping SBCL from trying to look for its
3104 sources -- which may not exist -- when reporting errors.)
3105 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3106 debugging and testing purposes
3107 * cleaned up printing, making the printer call PRINT-OBJECT for
3108 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3109 methods, giving nearly-ANSI behavior
3110 * converted almost all special variables to use *FOO* naming convention
3111 * deleted PARSE-TIME functionality, since it can be done portably
3112 * moved some files out of cold init into warm init
3113 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3115 * regularized formatting of source files
3116 * added an install.sh script
3117 * fixed ridiculous memory usage of cross-compiler by making
3118 compiler/alloc.lisp not try to do pooling unless it can hook
3119 itself into the GC of the cross-compilation host. Now the system
3120 builds nicely on my old laptop.
3121 * added :SB-ALLOC in target-features.lisp-expr
3122 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3123 was not implemented)
3124 * re-did condition handling and note reporting in the compiler. Notes
3125 are no longer handled by signalling conditions. Style warnings
3126 and warnings are handled more correctly and reported in such a way
3127 that it's easy to find one or the other in your output (so that you
3128 can e.g. figure out which of many problems caused COMPILE-FILE to
3130 * changed the severity of several compiler warnings from full WARNING
3131 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3132 compiler note reporting so that it doesn't use the condition system
3133 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3134 COMPILE-FILE command)
3135 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3136 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3137 no longer supported, since their implementation was deeply intertwingled
3138 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3139 * removed bogus "support" for compiler macros named (SETF FOO), and
3140 removed the compiler macro for SETF INFO (but only after making a fool
3141 of myself on the cmucl-imp mailing list by posting a bogus patch for
3142 DEFINE-COMPILER-MACRO..)
3143 * Compiled files containing forms which have side effects on the Lisp
3144 reader (such as DEFPACKAGE forms) are now handled more correctly.
3145 (Compiler queuing of top level lambdas has been suppressed by setting
3146 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3147 * deleted various currently-unused source files, e.g. gengc.lisp. They
3148 may be added back at some point e.g. when porting to other architectures,
3149 but until they are it's distracting to distribute them and to try to
3151 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3152 there were so many of them they're just distractions, and UNCROSS is
3153 known to be able to handle the current sources
3154 * moved PROFILE functionality into TRACE, so that it will be clear
3155 how the wrapping and unwrapping of functions when you profile them
3156 interacts with the wrapping and unwrapping of functions when you
3157 trace them. (Actually, the functionality isn't there yet, but at least
3158 the interface specification is there. Hopefully, the functionality will
3159 arrive with some future maintenance release.)
3160 * removed host-oops.lisp
3161 * changed signature of QUIT function to allow UNIX-CODE argument
3162 * fixed READ-SEQUENCE bug
3163 * tweaked verbose GC output so that it looks more like the progress
3164 output that ANSI specifies for functions like LOAD
3165 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
3166 * added <http://sbcl.sourceforge.com> to the banner information printed by