1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.2.16:
3 * enhancement: ported to ARM64 Linux.
4 * bug fix: calling COMPILE when SB-EXT:*EVALUATOR-MODE* was :INTERPRET
5 would fail to perform "normal semantic processing such as macro expansion"
6 as stipulated by X3J13 issue LOAD-TIME-EVAL.
8 changes in sbcl-1.2.16 relative to sbcl-1.2.15:
9 * enhancement: by default, timers with a repeat interval do not "catch up"
10 by repeatedly calling their function after a clock discontinuity such as a
11 suspend and resume cycle
12 * bug fix: correctly restore multiple values on the stack in the presence of
13 alien calls. (lp#1489590)
14 * bug fix: MAKE-STRING-OUTPUT-STREAM enforces that :ELEMENT-TYPE
15 is a subtype of CHARACTER.
16 * bug fix: an EQL method specializer no longer causes garbage retention
17 if there are no extant methods using the specializer. (lp#492851)
19 changes in sbcl-1.2.15 relative to sbcl-1.2.14:
20 * new feature: DEPRECATION declaration for functions, variables and types
21 causes {EARLY,LATE,FINAL}-DEPRECATION-WARNING to be signaled when subject
22 of the declaration is used. Integrated with DESCRIBE, DOCUMENTATION and
23 SB-CLTL2:{VARIABLE,FUNCTION}-INFORMATION. Documented in the "Deprecation"
24 section of the manual.
25 * enhancement: ASDF updated to 3.1.5. (lp#1476867)
26 * enhancement: definitions within PROGN get proper source locations when
27 compiled (needs latest Slime to take advantage of this). (lp#1473147)
28 * enhancement: source locations for DEFCLASS slots now point directly to the
29 slot definitions, not the whole DEFCLASS form.
30 * bug fix: better source location in the presence of quoted forms.
32 * bug fix: better source locations inside backqoute. (lp#1361502)
33 * bug fix: HANDLER-BIND requires that the handler-function be
34 a function designator at the time of binding establishment. (lp#1480679)
35 * bug fix: inlined functions surrounded by nested macrolets are properly
38 changes in sbcl-1.2.14 relative to sbcl-1.2.13:
39 * minor incompatible change: The name of a compiled anonymous lambda
40 as returned by the third value of FUNCTION-LAMBDA-EXPRESSION can have
41 a lambda-list-like list following the introductory LAMBDA that is not
42 in general a syntactically valid lambda list. Specifically, it won't
43 retain default values, supplied-p variables, or &KEY or &AUX bindings.
44 * enhancement: DESTRUCTURING-BIND has been totally reimplemented from
45 scratch to address a handful of performance and correctness issues.
46 Some minor behavioral differences exist regarding order of evaluation
47 of default forms for unsupplied &OPTIONAL and &KEY arguments
48 when nested destructuring patterns are involved.
49 (lp#707556, lp#707573, lp#707578, lp#708051)
50 * enhancement: DEFCONSTANT and DEFSTRUCT respect package locks. (lp#1186238,
52 * enhancement: sb-unicode:normalize-string has a new optional argument,
53 FILTER, a callback which controls which decomposed characters are
54 collected. Useful for stripping away diacritics more efficiently.
55 * bug fix: (TYPE-OF ARRAY) for a non-simple array is subject to change
56 after a call of ADJUST-ARRAY. (lp#1333731)
57 * bug fix: Dynamic-extent allocation with a loop between allocating a value
58 and the start of its environment no longer discards the allocated data
59 when the loop is taken. (lp#1472785)
60 * bug fix: Variable-reference elimination no longer generates incorrect code
61 under certain circumstances. (lp#1446891)
62 * bug fix: variables with EQL types are no longer treated as constants by
63 VOPs, which caused problems with closures being allocated for such
64 variables, but they remained unused. (lp#1390149)
65 * bug fix: Windows installer generates registry key name
66 correctly. (lp#1476447)
68 changes in sbcl-1.2.13 relative to sbcl-1.2.12:
69 * incompatible change: on success, TRY-SEMAPHORE and WAIT-ON-SEMAPHORE
71 * enhancement: WAIT-ON-SEMAPHORE accepts a decrement parameter
72 * enhancement: JOIN-THREAD allows distinguishing timeout vs. abort in all
74 * enhancement: On Windows DBG_PRINTEXCEPTION_C is handled and its message is
76 * bug-fix: TRUENAME works properly on broken symlinks presented as
77 directories. (lp#1400003)
78 * bug fix: Inlined DPB and DEPOSIT-FIELD don't interfere with left-to-right
79 order of argument evaluation. (lp#1458190)
80 * bug fix: (SETF (LDB (BYTE 1 2 JUNK) X) 0) is rightly rejected.
81 * bug fix: DEFSETF lambda lists should not permit argument destructuring.
82 * bug fix: calls to (SETF SLOT-VALUE) on a missing slot would in certain
83 situations incorrectly return the result of a SLOT-MISSING method
84 instead of always returning the new value. (lp#1460381)
85 * bug fix: a DEFMACRO occurring not at toplevel and capturing parts of
86 its lexical environment (thus being a closure) caused expressions
87 involving the macro name to cause corruption in the pretty-printer
88 due to faulty introspection of the lambda list of a closure.
89 * bug fix: out of line MAP/MAP-INTO check that the results produced by the
90 function are of the matching sequence type. (lp#1459581)
91 * bug fix: pretty-printing of '(LET `((,X ,Y)) :B) is handled correctly.
93 changes in sbcl-1.2.12 relative to sbcl-1.2.11:
94 * minor incompatible change: the SB-C::*POLICY* variable is no longer
95 a list. Code which manipulated it as such (including but not limited
96 to non-bundled releases of ASDF) will need to be revised.
97 * enhancement: The input stream for COMPILE-FILE implements
99 * enhancement: EVAL errors that occur by way of LOAD report the starting
100 line and column number of the erring toplevel form. (lp#565247)
101 * optimization: better MAP and MAP-INTO on known vector result types.
102 * bug fix: Read/modify/write macros accessing a place which is a
103 composition of CAR+CDR operations, such as (SHIFTF (CADR X) (ELT V 0)),
104 do not access subforms more than once. (lp#1450968)
105 * bug fix: short form of DEFSETF no longer allows trailing junk.
106 * bug fix: DEFINE-MODIFY-MACRO respects the provisions of CLHS 5.1.3
107 regarding argument evaluation order. (lp#1452539)
108 * bug fix: POP works as specified in CLHS if the setter for its
109 argument has a side-effect on the existing CAR value. (lp#1454021)
110 * bug fix: Reading "#()" with a positive numeric argument signals a
111 reader error. As specified, reading "#1()" has undefined consequences,
112 so correct portable code should be indifferent to this. (lp#1252100)
113 * bug fix: Malformed reader conditionals such as "(#-no-such-feature)"
114 and "(#+sbcl)" no longer parse as NIL. (lp#1454400)
116 changes in sbcl-1.2.11 relative to sbcl-1.2.10:
117 * enhancement: SET-PPRINT-DISPATCH will warn when given an expression in
118 which any part is unrecognizable as a legal type-specifier.
119 The dispatch table will be altered, but the new entry is disabled.
120 Subsequent type-defining forms will cause pprint-dispatch tables to
121 re-examine whether any disabled entries should be enabled. (lp#1429520)
122 * enhancement: Loading code containing calls to a deprecated function will,
123 under most circumstances, signal warnings similar to compiling such code.
124 The usual caveat holds about not detecting calls through a computed name,
125 as in (funcall (intern "DEPRECATED-FUN" "SB-EXT")).
126 * enhancement: (SB-EXT:COMPILE-FILE-LINE) is a new macro that expands
127 to a constant (VALUES integer integer) indicating the source line/column
128 from which it was read, intended for logging Lisp runtime errors in
129 a style similar to that afforded by the C preprocessor __LINE__ macro.
130 Similarly (SB-EXT:COMPILE-FILE-POSITION) returns a position in characters.
131 * enhancement: improved source locations for VOPs, alien types and
133 * bug fix: functions in :FINAL deprecation have the correct docstring.
134 No visible change, as no such functions presently exist. (lp#1439151)
135 * bug fix: (SETF (FDEFINITION this) (FDEFINITION OTHER)) signals an error
136 if OTHER names either a macro or special-operator. (lp#1439921)
138 changes in sbcl-1.2.10 relative to sbcl-1.2.9:
139 * minor incompatible change: all SOCKINT::WIN32-* functions have been
140 deprecated with EARLY deprecation state
141 * minor incompatible change: performing introspection via the system-internal
142 SB-INT:INFO function could expose that :TYPE :TRANSLATOR is not necessarily
143 a function, as it always was before. (Affects swank-fancy-inspector)
144 * enhancement: The value of SXHASH on bit-vectors of length equal to the
145 word size now depends on the vector's contents instead of being constant;
146 its value on bit-vectors of length divisible by the word size now depends
147 also on the contents of the vector's last word.
148 * bug-fix: sb-bsd-sockets on win32 uses proper C function declarations.
150 * bug fix: A new dead code elimination phase removes dead code loops
151 that confuse stack analysis. (lp#1255782, lp#308914)
152 * bug fix: A toplevel form which was simple enough to bypass the main
153 compiler in COMPILE-FILE, and which contained an empty SETQ or PROGN
154 would produce an invalid fasl file. (lp#1427050)
155 * bug fix: The compiler no longer signals an internal error when
156 encountering invalid FUNCTION forms like (function 1)
157 * bug fix: express proper dependencies in the ASDF contrib, to support
158 systems where make runs in parallel. (lp#1434768; thanks to Nikhil
161 changes in sbcl-1.2.9 relative to sbcl-1.2.8:
162 * minor incompatible change and bug fix: unboxed numeric constants
163 on x86oids are arranged in memory differently, and the disassembler
164 does not show them separately in DISASSEMBLE, but does
165 if DISASSEMBLE-CODE-COMPONENT is used. (lp#1421987)
166 * optimization: The compiler's treatment of type specifiers makes
167 it slightly faster and more memory-efficient. Portable code
168 should be indifferent to this change, however, users of
169 SB-INTROSPECT:FUNCTION-TYPE might notice that (MEMBER T NIL)
170 and (MEMBER NIL T) are both internally collapsed to the former,
171 so that the latter can never be obtained as part of an FTYPE.
172 * optimization: a TYPEP call in which the second argument is not a
173 QUOTE form but nevertheless recognized as a compile-time constant
174 might open-code the test. One scenario for this involves backquote,
175 such as (TYPEP x `(my-type ,some-arg)). Code which relied upon
176 deferring until runtime should declare (NOTINLINE TYPEP).
177 [Due to the sematic constraints of DEFTYPE etc in in CLHS 3.2.2.3,
178 code requiring delayed evaluation could be unportable though.]
179 * enhancement: unused variables at the top-level are now reported.
181 * bug fix: DEFCLASS handles cyclic {super,meta}class relations better
183 * bug fix: compiler no longer signals an error when compiling certain
184 function calls. (lp#1416704, lp#404441, lp#1417822, lp#1234919)
185 * bug fix: compiler doesn't stumble on a LOGIOR transform. (lp#1389433)
186 * bug fix: more robust debugger and backtraces. (lp#1413850, lp#1099500,
187 lp#1412881, lp#945261, lp#1419205, lp#1409402)
188 * bug fix: files larger than 4GB can now be compiled.
189 * bug fix: x86 truncated results from 64-bit foreign functions to 32 bits.
190 * bug fix: file-position didn't work on large files on win32. (lp#1271545)
191 * bug fix: callbacks from foreign threads can work without enabling
193 * bug fix: sb-introspect:function-lambda-list works properly on interpeted
195 * bug fix: ADJUST-ARRAY properly handles non-adjustable arrays. (lp#886418)
196 * bug fix: compiler no longer fails to dump a multidimensional array
197 constant involving a circular reference to itself
198 * bug fix: conditional and nested DX allocation no longer confuse the
199 compiler in STACK analysis. (lp#1044465)
200 * bug fix: sb-rotate-byte constant folding bug fixed. (lp#1423682)
202 changes in sbcl-1.2.8 relative to sbcl-1.2.7:
203 * enhancement: better error and warning messages. (lp#1314767, lp#736383)
204 * enhancement: backtrace for invalid argument count produces the exact
205 supplied arguments including the extra ones, on x86, x86-64 and ARM.
206 * enhancement: a STYLE-WARNING is signaled for DEFSTRUCT accessors which
207 are used before the structure is defined; similarly for the predicate.
208 * optimization: FORMAT NIL with only ~a and string arguments is transformed
210 * optimization: POSITION and FIND when inlined into code that is compiled
211 with qualities of safety < 2 and speed > space will no longer signal
212 an error on circular lists, but will potentially loop forever if given
213 no :END constraint. As was always the case, calls that are not inlined
214 are safe regardless of lexical policy.
215 * bug fix: CLOS methods compiled with (OPTIMIZE (DEBUG 0))
216 no longer cause debugger failure when printing a backtrace
217 * bug fix: more resilience to deleted code. (lp#1308328, lp#1390544)
218 * bug fix: the CLHS example of MAKE-LOAD-FORM involving TREE-WITH-PARENT
219 did not work, and now it does.
221 changes in sbcl-1.2.7 relative to sbcl-1.2.6:
222 * optimization: returning constant values refers to preboxed constants
223 more reliably. (lp#1398785)
224 * enhancement: a STYLE-WARNING is produced if a compiler-macro is defined
225 for a function after at least one ordinary (not inlined) call to that
226 function was compiled, indicating a likely compilation order problem.
227 Likewise a warning ensues if a call is compiled to a function
228 that is subsequently proclaimed INLINE.
229 * enhancement: always lose() when something goes wrong while saving a core
230 (instead of just printing an error on stderr in some situations).
231 * enhancement: frames in the debugger are now restartable by default.
232 * bug fix: restore error handling on Windows x86.
233 * bug fix: MAKE-SEQUENCE detects type errors in its :INITIAL-ELEMENT
234 at compile-time when possible. (lp#330299)
235 * bug fix: parsing of malformed type specifiers no longer results
236 in a memory-fault-error.
237 * bug fix: LOOP properly destructures nested lists in WITH.
238 * bug fix: MACROEXPANDing the redefinition of an alien structure type no
239 longer signals the wrong error.
240 * bug fix: PROGV doesn't get confused by forced DEBUG 3 (lp#1405456).
242 changes in sbcl-1.2.6 relative to sbcl-1.2.5:
243 * enhancement: SERVE-EVENTS uses the poll() system call in lieu of
244 select() if the OS has the former. Previously poll() was used
245 only if waiting on exactly one file descriptor.
246 * enhancement: efficiency of access to untagged structure slots is improved
247 on x86-64, and the order of slots in memory is exactly as specified by
248 defstruct, simplifying use of structures as arguments to foreign calls.
249 * bug fix: SB-DEBUG:ARG now works in all TRACE options which evaluate forms.
251 * bug fix: GC memory corruption during internal memory handling.
252 * bug fix: duplicate effective-slot-definition objects as compared
253 by EQ on name could be present in CLASS-SLOTS of a class whose
254 metaclass was structure-class or condition-class. (lp#1049423)
255 * bug fix: HANDLER-BIND with empty bindings works again; regression in
257 * bug fix: ATOMIC-INCF works on structure slots in interpreted code.
259 * bug fix: MAKE-ARRAY properly handles character types like (eql #\a) and
260 (member #\a #\c). (lp#1392068)
261 * bug fix: READ sometimes accidentally preserved a whitespace character
262 after a token when it should not have. (lp#327790)
264 changes in sbcl-1.2.5 relative to sbcl-1.2.4:
265 * enhancement: sb-bsd-sockets now has basic support for IPv6
266 * enhancement: An sb-unicode package has been added, containing
267 many functions related to handling Unicode text
268 * enhancement: The reader now normalizes symbols to Normalization
269 Form KC (NFKC). This behavior can be disabled with
270 SB-EXT:READTABLE-NORMALIZATION
271 * enhancement: a style-warning is signaled if OPTIMIZE declarations
272 multiply specify a quality with differing values. (lp#310267)
273 * bug fix: conservatively pointed to pages wipe out unused dwords so
274 that they cannot act as false roots in turn.
275 * bug fix: the walker's handling of lexical variable and symbol-macro
276 bindings is improved (lp#375326, lp#1368305)
277 * bug fix: HANDLER-{BIND,CASE} no longer drop into ldb when a clause
278 contains an undefined condition type; regression in 1.1.19 (lp#1378939)
279 * bug fix: in interpreted code, inequality predicates did not type-check
280 arguments that weren't examined, and a 1-argument use of MIN or MAX
281 accepted a complex number. (lp#1373702)
282 * bug fix: APROPOS and APROPOS-LIST handle inherited symbols correctly.
283 (lp#1364413, thanks to Zach Beane)
285 changes in sbcl-1.2.4 relative to sbcl-1.2.3:
286 * enhancement: the sequence functions MAP, CONCATENATE and MERGE now call
287 the new generic functions SEQUENCE:MAP, SEQUENCE:CONCATENATE and
288 SEQUENCE:MERGE respectively when the specified result type designates an
290 * bug fix: Wrong binding order of supplied-p parameters in macro lambda
292 * bug fix: VALIDATE-SUPERCLASS returns T when the superclass is the
293 universal superclass (lp#1332983)
294 * bug fix: reading an uninterned symbol whose print name has the
295 syntax of an integer signals an error. (lp#310062)
296 * bug fix: the walker is less likely to be confused when walking LET* forms
297 with special bindings and use of those bindings and others of the same
299 * bug fix: a rare bug affecting 32-bit platforms resulting in a
300 fatal condition with the message "Globaldb rehash failure" has been fixed.
302 changes in sbcl-1.2.3 relative to sbcl-1.2.2:
303 * enhancement: DOCUMENTATION works on instances of
304 FUNCALLABLE-STANDARD-CLASS
305 * enhancement: ASSERT reports arguments of calls to lexical functions in
306 additional to global functions.
307 * enhancement: ASDF updated to 3.1.3
308 * enhancement: UIOP can be loaded without ASDF.
309 * bug fix: some methods on CHANGE-CLASS did not finalize the new class
310 before accessing its class-precedence list.
311 * bug fix: CHANGE-CLASS no longer fails on unbound slots in the source
313 * bug fix: CHANGE-CLASS signals an appropriate error when the destination
314 class is a FORWARD-REFERENCED-CLASS.
315 * bug fix: CHANGE-CLASS no longer signals bogus TYPE-ERRORs for slots for
316 which initargs have been supplied.
317 * bug fix: saving cores on ARM was broken since the introduction of GENCGC.
319 * bug fix: macroexpanding a backquoted expression involving ",."
320 outside of the compiler failed. (lp#1354623)
322 changes in sbcl-1.2.2 relative to sbcl-1.2.1:
323 * incompatible change: the #\` ("backquote") reader macro was reimplemented
324 to support robust pretty-printing. Reading a form involving #\` produces
325 an invocation of the QUASIQUOTE ordinary macro which may contain subforms
326 that are not lists. Code that unportably attempts operations on
327 un-evaluated forms resulting therefrom, e.g.
328 (SUBST a b (read-from-string "`(x (,y))"))
329 might generate incorrect results and/or errors.
330 * enhancement: support for GNU/kFreeBSD x86.
331 * enhancement: ATOMIC-INCF and ATOMIC-DECF can operate on (CAR x), (CDR x)
332 and DEFGLOBAL variables of type fixnum.
333 * enhancement: arithmetic constant reduction is now performed on defconstant
334 constants too. (lp#1337069).
335 * bug fix: certain ftype proclamations containing &optional t &rest t no
336 longer cause subsequent definitions to signal bogus style-warnings.
337 * bug fix: #\Bell and #\Bel now read to different characters. (lp#1319452).
338 * bug fix: CAS SYMBOL-VALUE on locally special variables didn't work.
341 changes in sbcl-1.2.1 relative to sbcl-1.2.0:
342 * enhancement: GENCGC is enabled on ARM.
343 * enhancement: better error reporting for invalid calls to local functions.
344 * enhancement: support for GNU/kFreeBSD distributions. (lp#1079954, thanks
346 * enhancement: experimental support for threads on NetBSD/x86-64. (thanks
348 * enhancement: support for DragonFly BSD. (lp#1292845, thanks to Vasily
350 * bug fix: TYPE-OF must not return AND/OR/NOT expressions.
352 * bug fix: accessing NIL arrays stopped producing errors. (lp#1311421)
353 * bug fix: DISASSEMBLE no longer prints unwanted stuff. (lp#1251861)
354 * bug fix: compiling SVREF on unknown types no longer produces scary errors.
356 * bug fix: assorted LOOP fixes and enhancements. (lp#645534, lp#1322923,
357 lp#700538, lp#613876, lp#695286, lp#798388)
358 * bug fix: silence compiler notes from the SEARCH transform. (lp#1071310)
359 * bug fix: array type intersection handles T and unknown element types
360 correctly. (lp#1258716)
361 * bug fix: fix a corner case in array type unparsing that would result in
362 misleading translations from our internal type representation.
363 * bug fix: array-rank now sees through union and intersection types.
365 * bug fix: when DECLARE expressions are in the wrong place, be careful not
366 to attempt to evaluate the subforms. (lp#573747; thanks to Roman
368 * bug fix: misplaced and missing declarations in DEFTRANSFORM. (lp#1066451)
369 * bug fix: FBOUNDP returned NIL for a class of incorrect function names
370 instead of signaling an error. (lp#1095483)
371 * bug fix: fix a compile-time AVER in regalloc: lifetime analysis
372 used to (rarely) introduce duplicate conflict markers in a single
373 TN/block pair. (lp#1327008)
375 changes in sbcl-1.2.0 relative to sbcl-1.1.18:
376 * bug fix: read-time-eval backquote context mixup. (lp#1321047)
377 * enhancement: when SAVE-LISP-AND-DIE fails due multiple threads, the
378 report of the signaled conditions lists currently running threads.
379 * enhancement: ported to ARM linux.
380 * enhancement: sb-gmp contrib has been updated. (lp#1305266)
381 * enhancement: new contrib sb-mpfr by Stephan Frank.
382 * bug fix: MAKE-SEQUENCE works with sequence types defined via DEFTYPE
383 (lp#1315846, thanks to Mark Cox)
384 * bug fix: SET-[DISPATCH-]MACRO-CHARACTER should coerce a symbolic
385 function-designator to a function only as needed. (lp#1012335)
386 * bug fix: remove references to asdf-install from the manual. (lp#1207544,
387 thanks to Thomas Hlavaty)
388 * bug fix: handle --without-xxx options to make.sh more carefully.
389 (lp#1246665, thanks to Richard M Kreuter)
390 * bug fix: prevent maybe-delete-exit from doing semantically broken things
391 with local exits. (lp#309099, lp#518099, lp#533930)
392 * bug fix: attempts to subclass BUILT-IN-CLASSes signal errors, as required
395 changes in sbcl-1.1.18 relative to sbcl-1.1.17:
396 * optimization: COERCE is now more effecient for more cases when the type is
397 known at compile-time.
399 * bug fix: correctly inherit condition initforms. (lp#1300904)
400 * bug fix: properly pprint literal functions inside nested lists.
402 * bug fix: more-correctly handle array-type unity (broken for ages, causing
403 compilation problems since 1.1.13.x due to smarter TYPEP type propagation,
404 reported by jasom in #lisp).
406 changes in sbcl-1.1.17 relative to sbcl-1.1.16:
407 * enhancement: printing backtraces respects
408 SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* when printing call arguments
410 * optimization: defstruct out-of-line accessor are now as fast as inlined.
412 * bug fix: INVOKE-RESTART-INTERACTIVELY no longer refuses to invoke RESTART
413 instances with a test-function (reported by Vivitron in #sbcl)
414 * bug fix: STREAM-ERROR-POSITION-INFO fails in fewer situations (lp#1264902)
415 * bug fix: Change COND error message (lp#1254511)
416 * bug fix: LOAD is no longer confused when called on a directory.
418 * bug fix: MAKE-CONDITION reports names of missing condition classes
419 properly (lp#1199223)
420 * bug fix: restore building with clang. (lp#1293643)
421 * bug fix: restore building on SPARC (broken since 1.1.15).
422 * bug fix: improved FreeBSD support.
423 * bug fix: PPC floating point conversion corrupted stack.
425 changes in sbcl-1.1.16 relative to sbcl-1.1.15:
426 * minor incompatible change: improve read/print consistency for pathnames on
427 Win32, by using the circumflex character #\^ as the escape character.
429 * enhancement: SB-EXT:DEFINE-LOAD-TIME-GLOBAL. (lp#1253688)
430 * enhancement: Loading fasls with symbols from an undefined package includes
431 the name of the symbol in the error message.
432 * bug fix: problems when redefining classes and doing TYPEP on classes
433 concurrently. (lp#1272742)
434 * bug fixes to the x86-64 XCHG instruction:
435 ** it was misencoded when used with RAX, R8-R15 registers. (reported by
437 ** it was misencoded when used to exchange EAX with itself.
438 ** the disassembler wrongly printed XCHG RAX, R8 and the corresponding
439 32- and 16-bit variations as NOP.
440 * bug fix: the disassembler outputs source annotations in the right place
441 and no longer randomly drops some of them. (lp#1249205)
442 * bug fix: fix commutative-arg-swap from introducing undumpable structures
443 into code, prevent code with errors from being compiled. (lp#1276282)
444 * bug fix: pathnames with :back in their directory component are succeffully
446 * bug fix: the deterministic profiler now uses ENCAPSULATE functionality to
447 wrap functions around. (lp#309086)
449 changes in sbcl-1.1.15 relative to sbcl-1.1.14:
450 * new feature: the iterative spilling/coloring register allocator developed
451 by Alexandra Barchunova during Google Summer of Code 2013 is now merged
452 in. By default, it only activates for functions that optimize with
453 (speed 3) and (> speed compilation-speed), but setting
454 sb-regalloc:*register-allocation-method* to :iterative forces its
455 execution. The previous behaviour can be obtained by instead setting that
456 variable to :greedy. Thanks again to Google for their support, and, more
457 crucially, to Alexandra Barchunova for her hard work.
458 * optimization: make-array with known element-type and unknown dimensions is
460 * optimization: make-array with unknown element-type is faster as well.
462 * enhancement: sb-ext:save-lisp-and-die on Windows now accepts
463 :application-type argument, which can be :console or :gui. :gui allows
464 having GUI applications without an automatically appearing console window.
465 * enhancement: reduced conservativism on GENCGC platforms:
466 conservative roots must be valid-looking tagged pointers or point
467 within a code object, not merely point to within the allocated part
468 of a page, in order to pin a page.
469 * enhancement: support for "Mac Roman" external format.
470 * enhancement: encapsulation of named generic functions now happens without
471 altering the identity of the function bound to the name.
472 * bug fix: Windows applications without the console window no longer misbehave.
473 (patch by Wilfredo Velazquez, lp#1256034).
474 * bug fix: modular arithmetic optimizations do not stumble on dead branches
475 with bad constants. (reported by Douglas Katzman)
476 * bug fix: CLISP can be used again as a cross-compilation host.
477 (Thanks to Vasily Postnicov, lp#1261451)
478 * bug fix: run-program crashed with :directory nil. (lp#1265077)
480 changes in sbcl-1.1.14 relative to sbcl-1.1.13:
481 * optimization: complicated TYPEP tests are less opaque to the type
482 propagation pass. (lp#1229340)
483 * optimization: [N]BUTLAST perform a single pass over the list. (lp#1245697)
484 * optimization: EQUALP on structures with raw slots (double-float/complex)
485 no longer conses and is faster.
486 * optimization: RESTART-CASE expands to more compact code.
487 Thanks to Jan Moringen. (lp#1249055)
488 * enhancement: Top-level defmethod without defgeneric no longer causes
489 undefined-function warnings in subsequent forms. (lp#503095)
490 * enhancement: Better error messages for system errors on Windows.
491 * enhancement: run-sbcl.sh is usefully handled by rlwrap. Thanks to William
492 Cushing. (lp#1249183)
493 * enhancement: new function SB-EXT:ASSERT-VERSION->= accepts a version
494 specification (multiple integer arguments) and signals a continuable error
495 if the current SBCL version is lower (older) than the specification.
497 * enhancement: better ARRAY-RANK result derivation. (lp#1252108)
498 * bug fix: EQUALP now compares correctly structures with raw slots larger
500 * bug fix: contribs couldn't be built on Windows with MinGW.
501 * bug fix: Better pathname handling on Windows. (lp#922117)
502 * bug fix: OPEN reports a more meaningful error when an existing file is
503 opened for output with :if-exists :new-version. Thanks to Philip
504 Munksgaard. (lp#455381)
505 * bug fix: DEFSTRUCTs with NIL as a slot name no longer cause strange
506 CLOS-related errors. (lp#633911)
507 * bug fix: GC deadlocks caused by concurrent consing on Windows.
509 changes in sbcl-1.1.13 relative to sbcl-1.1.12:
510 * optimization: better distribution of SXHASH over small conses of related
512 * other improvements to SXHASH:
513 ** use the whole of the positive-fixnum range for SXHASH of fixnums
514 * enhancement: The error message when calling an undefined alien function
515 includes the name of the function on x86-64.
516 * enhancement: sb-ext:run-program now supports :environment on Windows.
517 * enhancement: ASDF is no longer required to load contribs at runtime.
519 * enhancement: when called with a symbol, FIND-RESTART no longer calls
520 COMPUTE-RESTARTS, making it faster and cons less (lp#769615)
521 * enhancement: FIND-RESTART and COMPUTE-RESTARTS handle huge restart
522 clusters better in some cases
523 * enhancement: SOME/ANY/other quantification higher-order functions no
524 longer cons. (lp#1070635)
525 * bug fix: forward references to classes in fasls can now be loaded.
527 * bug fix: don't warn on a interpreted->compiled function redefinition
528 from the same location. (patch by Douglas Katzman, lp#1042405)
529 * bug fix: Create vectors of proper internal length when reading literal
530 vectors from FASLs. (Reported by Jan Moringen)
531 * bug fix: COMPILE can now successfully compile setf functions.
532 (Reported by Douglas Katzman)
533 * bug fix: run-program performs more correct escaping of arguments on
534 Windows. (lp#1239242)
535 * bug fix: function-lambda-expression on generic functions returns the
537 * bug fix: (the [type] [constant]) now warns when [constant] matches
538 [type] except for the number of values. (Reported by Nathan Trapuzzano
540 * bug fix: signal errors in required cases of slot-definition initialization
541 protocol. (lp#309072)
542 * bug fix: run-sbcl.sh works better in the presence of symlinks on OS X.
543 (thanks to Stelian Ionescu, lp#1242643)
544 * bug fix: when given a restart object, FIND-RESTART checks whether the
545 restart is active and, when a condition is supplied, whether the restart
546 is associated to a different condition (lp#774410)
548 changes in sbcl-1.1.12 relative to sbcl-1.1.11:
549 * enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
550 shutdown(3). (thanks to Jan Moringen, lp#1207483)
551 * enhancement: document extensible sequences. (thanks to Jan Moringen,
553 * optimization: EQUAL and EQUALP transforms are smarter.
554 (thanks to Elias Martenson, lp#1220084)
555 * optimization: CHAR-EQUAL is faster for constant and base-char arguments.
556 * bug fix: probe-file now can access symlinks to pipes and sockets in
557 /proc/pid/fd on Linux. (reported by Eric Schulte)
558 * bug fix: SBCL can now be built on Solaris x86-64.
559 * bug fix: Floating point exceptions do not persist on Solaris anymore.
560 * bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
561 * bug fix: handle compiler-error in LOAD when it's not run from inside EVAL.
563 * bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base.
564 (thanks to Stephan Frank)
565 * bug fix: space allocation of result bignums in SB-GMP is more accurate.
566 (thanks to Stephan Frank, lp#1206191)
567 * bug fix: sb-safepoint can now reliably handle signal interruptions of
568 foreign code. (lp#1133018)
569 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
570 constructors no longer fails to merge actual and default initargs
571 (thanks to Jan Moringen, lp#1179858)
572 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
573 constructors handles non-KEYWORD initialization arguments more correctly.
574 * bug fix: loading the SB-SIMPLE-STREAMS contributed module no longer
575 clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, lp#884603)
576 * bug fix: class definitions with CPLs inconsistent with their metaclasses
577 are less likely to destroy the object system's integrity. (lp#309076)
578 * bug fix: restart clause parsing in RESTART-CASE is more in line with the
579 standard. (lp#1203585, thanks to Jan Moringen)
580 * bug fix: silence a note from RESTART-CASE under high-SPEED optimization
581 settings. (lp#1023721)
582 * bug fix: getting the order of arguments to
583 SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error
584 rather than a failed AVER. (reported by Paul Nathan)
585 * bug fix: Parsing of &optional/&key/&rest arguments now never overwrites
586 arguments during copying on x86 and x86-64; it may still happen on other
587 platforms when there are more fixed arguments than stack slots.
588 (reported by Jan Moringen)
590 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
591 * enhancement: support building the manual under texinfo version 5.
593 * enhancement: Windows builds no longer display the "Kitten of Death" message.
594 A warning is instead appended to the regular banner, and may be muted with
595 --noinform. (lp#728247)
596 * enhancement: support building under new linker handling of syscalls under
597 NetBSD. (thanks to Robert Swindells)
598 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
599 (regression since 1.1.9)
600 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
601 compiler macro. (thanks to Douglas Katzman).
602 * bug fix: signal a warning when defining a setf-function when a
603 setf-expander is already present. (thanks to Douglas Katzman).
604 * bug fix: improved threading on PPC.
605 * bug fix: ROOM works again on Windows. (lp#1206456)
606 * bug fix: Streams were flushed even when there was one byte still left in
607 the buffer. (lp#910213)
608 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
609 either NIL or :ERROR. (reported by Jan Moringen)
611 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
612 * enhancement: ASDF has been updated to 3.0.2.
613 * optimization: stack frames are packed more efficiently on x86oids, which
614 ought to reduce the frequency of Methuselahn conservative references (it
615 certainly helps with gc.impure.lisp / BUG-936304 on x86).
616 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
617 recognized in modular arithmetic contexts, and compile to native negate,
618 rather than going through bignums only to keep the low bits.
619 * bug fix: Compiling potential modularic arithmetic forms does not cause type
620 errors when some integer types lack lower or upper bounds. (lp#1199127)
621 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
622 bitwidth before being used in a non-modular context. (lp#1199428)
623 * bug fix: Multiple catch/unwind blocks in a single function are now
624 allocated in the right stack order on win32. (lp#1072739)
626 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
627 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
628 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
629 * enhancement: disassemble now annotates some previously missing static
630 functions, like LENGTH.
631 * enhancement: clean.sh now also cleans doc/internals.
632 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
633 print a symbol with a package prefix.
634 * enhancement: The debugger and backtracing are more robust against buggy
635 PRINT-OBJECT methods.
636 * optimization: calls to static functions on x86-64 use less instructions.
637 * optimization: compute encode-universal-time at compile time when possible.
638 * optimization: when referencing internal functions as #'x, don't go through
639 an indirect fdefn structure.
640 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
641 * optimization: (mod fixnum) type-checks are performed using one unsigned
642 comparison, instead of two.
643 * optimization: enable more modular arithmetic transforms in the presence of
645 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
646 when the result is known to be negative.
647 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
648 * optimization: comparisons between rationals and constant floats or between
649 integers and constant ratios are now converted to rationals/integers at
651 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
652 * bug fix: problems with NCONC type derivation (reported by Jerry James).
653 * bug fix: EXPT type derivation no longer constructs bogus floating-point
654 types. (reported by Vsevolod Dyomkin)
655 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
656 addrinfo. (lp#1187041, patch by Jerry James)
657 * bug fix: uninitialized type-error conditions can now be printed.
659 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
660 listening, allowing several tests to run in parallel.
661 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
662 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
664 * bug fix: Specialised SIMD-PACK types can be negated.
665 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
666 reported by Eric Marsden)
667 * bug fix: FP return values from foreign calls are always rounded to single
668 or double float precision on x87.
669 * bug fix: Known-safe vector access on x86oids should not fail spuriously
670 when the index is of the form (+ x constant-positive-integer).
671 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
672 * bug fix: backtrace printer no longer tries to create very large lists when
673 the arg-count register is clobberred by other code. (lp#1192929)
674 * bug fix: x86 should never signal an FP exception while boxing an FP value,
675 a situation that lands us into ldb.
677 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
678 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
679 ROOM, plus a few SB-INTROSPECT functions) has been completely
680 rewritten; it may now exhibit different bugs than before.
681 * new feature: minimal runtime/compiler intrastructure support for SSE
682 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
683 feature :sb-simd-pack. This should enable intrinsics extensions as
684 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
685 for maintaining a branch for so long.
686 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
687 the working directory of the spawned process.
688 (lp#791800) (patch by Matthias Benkard)
689 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
690 stack-allocated on PPC.
691 * enhancement: "fixed objects" can now be stack-allocated on PPC.
692 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
693 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
694 also returns VOPs which do not translate any functions, and finds
695 defoptimizer types ir2convert and stack-allocate-result.
696 * enhancement: better type derivation for APPEND, NCONC, LIST.
698 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
699 heap in a manner similar to the GC rather than its previous ad-hoc
700 scheme, and is therefore no less and possibly more accurate.
701 * fixes and enhancements related to Unicode:
702 ** the character database information has been updated to Unicode 6.2;
703 ** support for canonical and compatibility decomposition of characters has
704 been added, along with support for primary composition;
705 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
706 NFKD) has been included;
707 ** querying the character database for code points not defined by Unicode
708 gives less wrong answers (lp#1178038, reported by Ken Harris)
709 * enhancement: print intermediate evaluation results for some ASSERTed
710 expressions. (lp#789497) (patch by Alexandra Barchunova)
711 * enhancement: x86-64 disassemblies are annotated with unboxed constant
712 values when there are references to (RIP-relative) unboxed constants.
713 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
714 of quadratically with the size of the input in the worst case.
716 * bug fix: handle errors when initializing *default-pathname-defaults*,
717 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
718 decoding errors, or directories being deleted.
719 * bug fix: Loading a core with a discontiguous dynamic space now correctly
720 computes the amount of dynamic space used.
721 * bug fix: disassembler missing ",8" on SHLD
722 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
723 that provide an "invalid" stack frame link for the signal handler
724 itself now use the saved-fp-and-pc mechanism to pick up from the stack
725 frame in the interrupt (signal) context. This is known to affect
726 threaded FreeBSD/x86-64.
727 * bug fix: some LOOP statements couldn't be compiled.
729 * bug fix: sb-sequence:dosequence works on literal vectors.
730 * bug fix: errors in generic arithmetic show the assembly routine's
731 caller on x86 and x86-64. (lp#800343)
732 * bug fix: Compile-time type errors should never result in COMPILE-FILE
734 * bug fix: Known bad local calls do not cause strange failures when
735 emitting or dumping code. (lp#504121)
736 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
737 codegen errors: type checks are inserted as necessary. (lp#1177703)
738 * bug fix: Unsigned modular arithmetic is correctly converted into signed
739 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
740 * bug fix: a combination of inlined local function with &optional and
741 recursion no longer causes undescriptive compiler errors. (lp#1180992)
742 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
743 when testing for non-zero-ness.
744 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
746 * bug fix: Type mismatch for the value of conditional expressions are
747 correctly reported when detected at compile-time, instead of complaining
748 about a constant NIL (similar for non-EQ-comparable catch tags).
749 * bug fix: Referring to INLINE global functions as values should not result
750 in a compilation failure. (lp#1035721)
751 * optimization: faster ISQRT on fixnums and small bignums
752 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
753 * optimization: On x86-64, the number of multi-byte NOP instructions used
754 for code alignment is now always minimal.
755 * optimization: On 64-bit targets, the compiler generates much faster
756 code for type checks for types known at compile time that are smaller
757 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
758 their COMPLEX variants.
759 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
760 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
761 * optimization: ROOM no longer conses so egregiously on non-x86oid
763 * optimization: associative bitwise operations reassociate patterns like
764 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
766 * optimization: quasiquote expressions now perform more constant folding,
767 instead of consing equal lists at runtime. (lp#1026439)
768 * optimization: local call analysis of inlined higher-order function
769 should converge more quickly, resulting in better code for complex
771 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
772 integer constants are handled more cleverly, especially when they
773 can be represented as sign-extended (signed-byte 32). (Based on a
774 patch by Douglas Katzman)
775 * optimization: IF/IF conversion should reliably result in sane code
776 when (some of) the results of the inner IF are always false or
778 * optimization: On x86oids, variable right shifts of machine words are
779 compiled into straight SAR/SHR, instead of going through the generic
782 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
783 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
785 * bug fix: :allocation slot option works for condition slots
787 * bug fix: redefining conditions does not lead to multiple evaluations of
788 hairy slot initfunctions anymore (lp#1164969)
789 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
791 * bug fix: function constants now work as initforms and default initarg
792 values of conditions (lp#539517)
793 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
794 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
795 * bug fix: no more bogus ## references when pretty printing backquoted
796 forms with non-trivial structure sharing. (lp#1161218)
797 * bug fix: Don't signal an error on (setf (documentation nil 'function)
798 "doc"). Signal a style-warning instead when trying to set documentation
799 of NIL for all other documentation types. (Reported by Zach
800 Beane; regression since 2e52fa05.)
801 * bug fix: modular arithmetic involving large constants and conditionals
802 should no longer result in spurious dead code elimination. (Reported by
804 * bug fix: our mach exception handler can seemingly called very early in
805 the program execution process on OS X 10.8.0. Try and handle that case
806 robustly, without potentially leaking mach ports too much.
807 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
809 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
810 * enhancement: the continuable error when defknown-ing over extant
811 fndb entries can be ignored by passing :overwrite-fndb-silently t
812 as a keyword argument to sb-c:defknown (after attributes). Useful
813 to allow defknown to be re-loaded. Use with :allow-other-keys t
814 for backward compatibility.
815 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
817 * bug fix: Prevent a make-array transform from modifying source forms
818 causing problems for inlined code. Thanks to Bart Botta.
819 (regression since 1.0.42.11-bis)
820 * bug fix: clear-output calls the correct gray stream routine,
821 sb-gray:stream-clear-output. (lp#1153257)
822 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
824 * bug fix: Better error messages for package operations (lp#1154776)
825 * bug fix: delete-package on a nonexistent package should signal a cerror.
826 (regression since 1.0.37.44).
827 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
828 (lp#1154946, lp#1072112)
829 * bug fix: compiling make-array no longer signals an error when the
830 element-type is an uknown type, a warning is issued instead.
831 Thanks to James Kalenius (lp#1156095)
832 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
833 produces wrong results for some inputs. (Thanks to Jan Moringen.)
836 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
837 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
839 * new feature: package local nicknames. See manual for details.
840 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
841 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
842 * enhancement: easier to use restarts for resolving name-conflicts
843 resulting from IMPORT, EXPORT, or USE-PACKAGE.
844 * enhancement: variant DEFPACKAGE forms now signal a full error with
845 restarts provided for resolving the situation. (lp#891351)
846 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
847 DEFPACKAGE forms can now signal a full error with restarts provided for
848 resolving the situation. See manual for details. (lp#891351)
849 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
850 (Thanks to Anton Kovalenko.) (lp#1102748)
851 * enhancement: backtrace improvements
852 ** secondary CLOS dispatch functions have better debug names (lp#503081)
853 ** easier to read method names in backtraces. See
854 SB-DEBUG:*METHOD-FRAME-STYLE*.
855 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
856 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
857 SB-DEBUG:BACKTRACE-AS-LIST.
858 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
859 information is available in less intrusive form as frame annotations.
860 * enhancement: SB-POSIX now provides MAP-ANON.
861 * enhancement: test-suite results are colorized, failures in red, unexpected
862 success in green. Works on Windows and on terminals with ANSI escape code
863 support. Can be disabled with --no-color.
864 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
865 (thanks to James M. Lawrence)
866 * bug fix: no more unused variable style warnings from RESTART-CASE
867 macroexpansion (lp#1113859)
868 * bug fix: no more unused variable style warnings when loading
869 sb-bsd-sockets.asd (lp#1114681)
870 * bug fix: deleting a package removes it from implementation-package
871 lists of other packages.
872 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
873 This does not fix the occasional "interrupt already pending" issue, though.
874 * bug fix: (setf (documentation 'x 'function)) and
875 (setf (documentation #'x t)) set documentation in different places.
876 (regression since 1.0.43.63)
877 * bug fix: build on newer glibc. (lp#1095036)
879 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
880 * optimization: LOOP expressions using "of-type character" have slightly
881 more efficient expansions.
882 * bug fix: very long (or infinite) constant lists in DOLIST do not result
883 in very long compile times or heap exhaustion anymore. (lp#1095488)
884 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
885 * bug fix: adjust-array ignored :initial-element for simple-vectors.
887 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
888 longer cause infinite loops (on circular data) or violate eqlity
889 constraints. (lp#1099708)
890 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
892 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
893 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
895 * enhancement: support for C-c to interrupt the foreground thread
896 on Windows. (Thanks to Anton Kovalenko.)
897 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
898 * enhancement: Safepoint builds on POSIX platforms can now optionally be
899 built without pseudo-atomic sequences and their run-time overhead.
900 * enhancement: Threads created outside of Lisp can enter Lisp through
901 alien callbacks and appear as Lisp threads for the duration of that
902 function invocation. On safepoint builds only.
903 * enhancement: Miscellaneous improvements to namestrings and underlying
904 calls to OS functions for file system access on Windows. (Thanks to
906 * enhancement: The MSI installer support for Windows now uses Windows
907 Installer XML at least version 3.5 and includes various usability
908 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
909 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
910 on Windows. (Thanks to Anton Kovalenko.)
911 * enhancement: The Windows backend now supports the x86-64 platform.
912 (Thanks to Anton Kovalenko.)
913 * bug fix: fasls are now once again directly executable (on platforms
914 supporting shebang lines, with a suitably-installed sbcl).
915 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
916 * bug fix: Fix CAS access to slots of direct instances of structure classes
917 in the presence of subclasses sharing the same conc-name.
918 * bug fix: Logical pathname namestrings on Windows have been changed to
919 be lower-case, to minimize differences between POSIX and Windows.
921 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
922 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
923 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
924 (NT 5.0) is no longer being maintained.
925 * notice: Starting with this version, SBCL on Windows no longer supports
926 building with disabled thread support.
927 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
928 * enhancement: New feature sb-dynamic-core allows the runtime to be
929 rebuilt or relocated without requiring changes to the core file on
930 all linkage table platforms. Required on Windows. (Thanks to Anton
932 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
933 * enhancement: I/O on Windows unnamed pipes is interruptible
934 asynchronously using interrupt-thread, timers when running on Windows NT
935 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
937 * enhancement: Support for the experimental safepoint-based stop-the-world
938 protocol on the PowerPC platform.
939 * bug fix: Non-blocking reads from the Windows console were not necessarily
940 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
941 * bug fix: stability of threads on Windows has been improved upon through
942 an updated stop-the-world protocol (thanks to Anton Kovalenko).
944 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
945 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
946 (COMPILE and COMPILE-FILE still do.)
947 * optimization: the SPARC backend now supports the precise generational
948 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
949 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
950 * enhancement: add experimental support for the SB-THREAD feature and the
951 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
952 Threads are enabled by default, and this version of SBCL is considered
953 to be the last and final release to officially support building with
955 * optimization: The compiler no longer rotates loops in some cases where
956 this transformation actually lead to worse code being generated.
957 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
958 symbol-macros by lexical bindings.
959 * bug fix: stack allocation was prevented by high DEBUG declaration in
961 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
962 (thanks to SANO Masatoshi)
963 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
964 :JUNK-ALLOWED was true.
965 * bug fix: type derivation inferred overly conservative types for
966 unions of array types. (lp#1050768)
968 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
969 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
970 source annotation of DISASSEMBLE output. Defaults to T.
971 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
972 WAIT-P argument added to WITH-RECURSIVE-LOCK.
973 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
975 * enhancement: Optional features (not enabled by default) allow the
976 use of signals for inter-thread synchronization to be reduced on certain
977 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
978 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
979 to test these experimental features. Known remaining bugs include minor
980 thread safety issues, less timely freeing of memory by GC, and certain
981 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
982 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
983 comparisons, particularly on almost-sorted inputs.
984 * bug fix: Reading floats with large exponents no longer takes too much time
985 before reporting that the exponent is too large.
986 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
987 correctly when the received datagram is larger than the provided buffer.
988 (lp#1023438, thanks to Robert Uhl)
989 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
990 a SYMBOL-VALUE form with a constant symbol argument.
991 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
992 into a DEFCAS defined place was used as the place.
993 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
994 for from bit-vectors.
995 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
996 lead to internal errors or crashes (lp#1058799).
997 * documentation: a section on random number generation has been added to the
1000 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
1001 * enhancement: implicit generic function warnings now specify the package
1002 in which the new generic function is being created.
1003 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
1004 updates of CAS-able places (similar to Clojure's swap!).
1005 * enhancement: run-program no longer decodes and re-encodes environment when
1006 :environment argument is not provided. (lp#985904)
1007 * enhancement: errors during compiler-macro expansion no longer cause
1008 runtime errors, only a compile-time warning, otherwise behaving as if
1009 the compiler macro had declined to expand.
1010 * optimization: On x86-64, code alignment of block headers is done with
1011 multi-byte NOPs now instead of repetitions of the single-byte NOP.
1012 * optimization: MAP-INTO is substantially faster when the target sequence is
1013 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
1014 thanks to James M. Lawrence)
1015 * optimization: the compiler no longer heap-conses to check exits in cases
1016 where the exit function is dynamic extent, or when it can prove the exit
1017 function cannot escape. (lp#1002534)
1018 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
1019 element type, and vectors that aren't SIMPLE-ARRAYs.
1020 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
1021 speed (around 1/3 the time in some cases), and a little better in terms of
1022 comparison calls. (Thanks to Takeru Ohta)
1023 * bug fix: On SPARC, a limitation on the number of code constants emittable
1024 by the compiler has been lifted, allowing certain long functions to
1025 compiled and assembled which had previously been unsupported; fixes
1026 cl-bench on this ISA (lp#1008996).
1027 * bug fix: potential for infinite recursion during compilation of CLOS slot
1028 typechecks when dependency graph had loops. (lp#1001799)
1029 * bug fix: error forms reported with some program-errors were not escaped
1031 * bug fix: functions from EVAL are now on more equal footing with functions
1032 from COMPILE. (lp#1000783, lp#851170, lp#922408)
1033 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
1034 objects as its :METHOD-COMBINATION argument, not just lists designating
1035 method combinations. (lp#936513)
1036 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
1038 * bug fix: restore build on solaris/sparc. (lp#1008506)
1039 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
1040 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
1041 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
1042 as keyword arguments no longer accidentally match unevaluated symbols
1044 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
1045 parameter was zero, now it signals an error. (lp#905817, fixed since
1047 * bug fix: run-program with :pty t no longer makes the pty as the process's
1048 controling terminal.
1049 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
1052 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
1053 * RANDOM enhancements and bug fixes:
1054 ** bug fix: the range and distribution of random integers could be
1055 catastrophically wrong when the compiler derived the type of its
1056 argument as a disjoint set of small integers.
1057 ** bug fix: the distribution of random integers is now completely
1058 uniform even when the specified limit is not a power of two.
1059 (Previously some values could be about 0.1 % more probable than
1060 others in the worst case.) (lp#309467)
1061 ** RANDOM on large integer arguments is generally faster and conses
1062 less than before; this is visible for fixnums above a length of
1063 about 24 bits, but extremely so for bignums: the old implementation
1064 used time and space quadratical in the size of the argument there,
1065 the new one is linear.
1066 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
1067 main entry point, SB-EXT:QUIT is deprecated.
1068 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
1069 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
1070 * enhancement: FASL loading no longer grabs the world-lock.
1071 * enhancement: GENCGC reclaims space more aggressively when objects being
1072 allocated are a large fraction of the total available heap space.
1074 * enhancement: backtraces show the correct number of arguments for frames
1075 called with too many arguments.
1076 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
1078 * enhancement: ASDF has been updated 2.21.
1079 * optimization: fewer uses of full calls to signed modular functions.
1081 * optimization: typechecking alien values is typically 5 x faster.
1082 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
1084 * bug fix: file compilation performance issues when dumping subtypes
1085 of CHARACTER (lp#994487)
1086 * bug fix: fixed disassembly of some SSE instructions on x86-64.
1087 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
1088 OPEN. (lp#969352, thanks to Kambiz Darabi)
1089 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
1091 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
1092 classoid even if X was not the proper name of the class. (lp#941102)
1093 * bug fix: declaration leakage between lexical environments due to careless
1094 use of NCONC in MAKE-LEXENV. (lp#924276)
1095 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
1096 *default-pathname-defaults* contains NAME or TYPE components.
1097 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
1098 from CL package, e.g. (loop . 10).
1099 * bug fix: run-program with existent or non-existent files for :output or
1100 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
1101 returns NIL instead of signalling an obscure error.
1102 * bug fix: fix miscompilation of some logand forms with large constant
1103 arguments. (lp#974406)
1104 * bug fix: account for funcallable-instance objects properly in ROOM.
1105 * bug fix: incorrect octets reported for c-string decoding errors.
1107 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
1109 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
1110 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
1111 allowing faster release of memory back to the OS. (lp#991293)
1112 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
1113 existing deadline for the dynamic scope of its body.
1114 * bug fix: compiler-internal interval arithmetic needed to be more
1115 conservative about open intervals when operated on by monotonic but not
1116 strictly-monotonic functions. (lp#975528)
1117 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
1118 it's also slightly faster. (lp#998926)
1119 * bug fix: better error messages for malformed declarations.
1121 * bug fix: define-condition didn't return the name of the defined condition.
1123 ** improved docstrings: REPLACE (lp#965592)
1125 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
1126 * bug fix: fix copy-structure. When copying from stack to heap, garbage
1127 could end up in the heap making GC unhappy.
1128 (Thanks to James Knight, lp#911027)
1130 ** SBCL can now be built using Clang.
1131 ** ASDF has been updated 2.20.
1132 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
1133 * bug fix: don't complain about a too-hairy lexical environment for inlining
1134 when the function has never been requested for inlining. (lp#963530)
1136 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
1137 * enhancements to building SBCL using make.sh:
1138 ** --fancy can be specified to enable all supported feature enhancements.
1139 ** --with-<feature> and --without-<feature> can be used to specify
1140 which features to build with.
1141 ** --arch option can be used to specify the architecture to build for.
1142 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
1143 full-blows cross-compilation.)
1144 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
1145 which allows specifying name of the default interning package for the
1147 * enhancement: when *READ-EVAL* is true, arrays with element type other than
1148 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
1149 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
1150 null alien when malloc() fails. (lp#891268)
1151 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
1152 conditions can be conveniently accessed through function with the same
1153 name, analogously to CONTINUE.
1154 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
1155 from the printer by type, causing an error marker to be printed instead.
1156 (Thanks to Attila Lendvai)
1157 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
1158 generally behave better when errors occur during printing.
1159 * enhancement: the test runner now takes a --report-skipped-tests argument
1160 to report the individual tests skipped as well as the number of skipped
1162 * enhancement: undefined functions now appear in backtraces as ("undefined
1163 function") instead of ("bogus stack frame") on x86oids.
1164 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
1165 deadlock errors are reported in an easier-to-decipher manner.
1166 * enhancement: DESCRIBE on type designators reports the expansion in more
1168 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
1169 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
1170 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
1171 * enhancement: better disassembly of segment-prefixes on x86 and other
1172 instruction prefixes (e.g. LOCK) on x86 and x86-64.
1173 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
1174 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
1175 * optimization: SUBSEQ on vectors of unknown element type is substantially
1177 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
1178 be stack-allocated. (lp#902351)
1179 * optimization: the compiler is smarter about representation selection for
1180 floating point constants used in full calls.
1181 * optimization: the compiler no longer refuses to coerce large fixnums to
1182 single floats inline, except on x86 where this limitation is still
1184 * optimization: truncation operations on integers with constant divisor
1185 arguments 1 and -1 are optimized away.
1186 * bug fix: deadlock detection could report the same deadlock twice, for
1187 two different threads. Now a single deadlock is reported exactly once.
1188 * bug fix: interval-arithmetic division during type derivation did not
1189 account for signed zeros.
1190 * bug fix: compiler error when typechecking a call to a function with
1191 non-constant keyword arguments.
1192 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
1193 * bug fix: condition slot accessors no longer cause undefined function
1194 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
1195 form that defines them. (lp#896379)
1196 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
1197 by ANSI. (lp#894202)
1198 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
1199 bogusly report NIL, T.
1200 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
1201 required arguments ignored and performed assignments to others.
1203 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
1204 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
1205 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
1206 * bug fix: redefining a function whose previous definition contained an
1207 unknown type no longer causes a style-warning. (lp#806243)
1208 * bug fix: undefined functions now appear in backtraces as ("undefined
1209 function") instead of ("bogus stack frame") on non-x86oids.
1210 * bug fix: backtraces are no longer cut off at ("undefined function") when
1211 called under certain circumstances (involving a caller-allocated stack
1213 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
1214 systems. (regression since 1.0.53)
1215 * bug fix: GC deadlocks from dladdr() on certain platforms.
1216 * bug fix: broken standard streams no longer automatically cause recursive
1217 errors on debugger entry.
1218 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
1219 (regression since 1.0.53)
1220 * bug fix: attempts to stack allocate a required argument to a function with
1221 an external entry point caused compiler-errors.
1222 * bug fix: compiler notes for failed stack allocation for a function argument
1223 no longer claim to be unable to stack allocate the function.
1224 * bug fix: COERCE now signals a type-error on several coercions to
1225 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
1226 * bug fix: missing failure-to-stack-allocate compiler notes for some
1227 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
1228 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
1230 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
1232 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
1233 * minor incompatible changes:
1234 ** RENAME-FILE on a symbolic links used to rename the linked-to file
1235 instead of the link.
1236 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
1237 directory, but now signal an error instead. Use TRUENAME to resolve the
1238 pathname if you wish to delete the linked directory, and DELETE-FILE if
1239 you wish to delete the
1240 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
1241 symbols associated with it will trigger a compile-time warning.
1242 * thread-related enhancements:
1243 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
1244 Many thanks to generous donors!)
1245 ** Threading is now more reliable on non-Linux platforms. We still don't
1246 consider threads on non-Linux platforms good enough to enable them by
1247 default, but they're in a clearly better shape now.
1248 ** Deadlines supported now on all platforms.
1249 ** All blocking functions in the threading API now have a :TIMEOUT
1251 ** Semaphore notification objects have been added to SB-THREAD.
1252 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
1253 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
1254 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1255 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
1256 using an API anologous to defining new SETFable places.
1257 * GC-related enhancements and bug fixes:
1258 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
1259 and Gb suffixes. Default is megabytes as before.
1260 ** on GENCGC targets, the default dynamic space size is now 512Mb for
1261 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
1262 exception, defaulting to mere 444Mb to fit under default ulimits.) The
1263 new defaults are in place to prevent hitting swap on low-end systems.
1264 Use build-time option --dynamic-space-size to build an SBCL with
1265 another default, or the runtime option to adjust the size at startup: a
1266 good size is at most equal to the amount of physical memory the system
1268 ** on GENCGC targets, nursery and generation sizes now default to 5% of
1270 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
1271 refuses to create SIMPLE-FUN objects.
1272 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
1274 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
1275 validation of pointer objects as GENCGC does, instead of a
1276 comparatively weak bounds-check against the heap spaces.
1277 * SB-BSD-SOCKETS bug fixes:
1278 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
1279 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
1280 systems with getaddrinfo().
1281 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
1282 safe outside systems with getaddrinfo().
1283 * enhancement: ASDF has been updated 2.019.
1284 * enhancement: special-case TCO prevention for functions which never return
1285 extended to untrusted types, keeping one more frame's worth of debug
1286 information around in many cases.
1287 * enhancement: debug-names of anonymous and local function are more
1288 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
1289 * enhancement: on win32, ABS of complex floats guards better against
1290 overflows. (lp#888410)
1291 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
1292 process exiting with code 1. (lp#676987)
1293 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
1294 the system where on the filesystem the SBCL sources themselves are
1295 located. (Thanks to Zach Beane)
1296 * enhancement: the compiler is now able to derive tighter bounds for
1297 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
1298 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
1299 correctly, even on wide-fixnum builds. (lp#887220)
1300 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
1301 resolved to directories.
1302 * bug fix: type mismatch when assigning to lexical variables no longer
1303 result in fasl-dumping internal type objects. (lp#890750)
1304 * bug fix: type mismatch on (SETF AREF) and function return values no
1305 longer result in fasl-dumping internal type objects.
1306 * bug fix: With several combinations of argument types, for example (EXPT
1307 <integer> <(complex double)>), EXPT now uses double-precision throughout
1308 instead of partially calculating only to single-precision. (lp#741564;
1309 thanks to Lutz Euler)
1310 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
1311 objects when interrupted by GC on PPC.
1313 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
1314 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
1315 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
1316 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
1317 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
1318 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
1319 targets is now 63 bits (up from 61).
1320 * enhancement: DESCRIBE now reports a lambda-list and source location
1321 for complext setf-expanders.
1322 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
1323 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
1324 of multiple-valued places to be set to NIL, instead of signalling an
1325 error (per a careful reading of CLHS 5.1.2.3).
1326 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
1327 * bug fix: repair crash in x86oid darwin signal handling emulation
1328 when built with certain compilers.
1329 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
1330 rotation arguments on x86-64. (lp#882151)
1331 * bug fix: low-level control flow optimisations could result in bogus
1332 code in functions with tail and non-tail calls to local functions on
1333 x86oids. (lp#883500)
1334 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
1335 to emit literal characters > (code-char 4095), for comparisons with
1336 constant characters.
1337 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
1338 on 64 bit platforms. (lp#881445)
1339 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
1340 delete the wrong file when using relative pathnames. (lp#882877)
1341 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
1342 sequences and :KEY NIL.
1344 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
1345 * enhancement: ASDF has been updated to version 2.017.
1346 * enhancement: the --core command line option now accepts binaries with
1348 * enhancement: when built with :sb-core-compression, core files (regular
1349 or executable) can be compressed with zlib. Use the :COMPRESSION
1350 argument to SAVE-LISP-AND-DIE to specify a compression level.
1351 * enhancement: --[no-]merge-core-pages determines whether the runtime
1352 hints the operating system that identical core pages between SBCL
1353 processes should share the same physical memory. Default is to only
1354 enable this for compressed cores.
1355 * optimization: SLEEP no longer conses.
1356 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
1357 or bit-vectors when using the standard pretty-print dispatch table.
1358 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
1360 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
1361 AREF, CHAR, etc. (lp#826971)
1362 * bug fix: compiler-errors causes by integer arguments with composed of
1363 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
1364 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
1365 expressions. (lp#770184)
1366 * bug fix: complex single float literals are correctly aligned when used
1367 as arguments of arithmetic operators.
1368 * bug fix: on 32-bit platforms, rounding of double floats larger than a
1369 fixnum is correct. (reported by Peter Keller)
1370 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
1371 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
1373 * bug fix: redefining classes such that slots with custom allocation are
1374 added or removed works again.
1376 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
1377 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
1378 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
1379 MAKE-SOCKET-STREAM if using SERVE-EVENT.
1380 * enhancement: added support for socket keepalive timeout intervals
1381 and probe counts on Linux.
1382 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
1383 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
1384 * enhancement: added new toplevel options --quit and --non-interactive
1386 * enhancement: the Windows port of SBCL now builds and runs on Wine
1387 (thanks to Anton Kovalenko).
1388 * enhancement: more, and more correct, SSE instruction definitions on
1389 x86-64 (thanks to Alexander Gavrilov).
1390 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
1391 to help the processor execute spin loops, when applicable. Currently
1392 implemented for x86 and x86-64.
1393 * optimization: unsigned integer divisions by a constant are implemented
1394 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
1395 * optimization: improved type-derivation for LOAD-TIME-VALUE.
1396 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
1397 instructions. (lp#814688)
1398 * bug fix: COERCE to unfinalized extended sequence classes now works.
1399 (reported by Jan Moringen; lp#815155)
1400 * bug fix: a compiler error during typecheck generation, reported by Eric
1401 Marsden. (lp#816564)
1402 * bug fix: obsolete instance protocol fires when shared slots are added
1404 * bug fix: fixed-format floating point printing with scaling factors.
1406 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
1407 backtraces. (lp#818460)
1408 * bug fix: better backtraces for interrupted syscall frames on x86.
1410 * bug fix: SSE comparison instructions can be disassembled even when one
1411 operand is in memory. (lp#814702)
1412 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
1413 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
1414 type information associated with the VALUES form.
1415 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
1417 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
1418 first write (lp#561642).
1419 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
1420 * bug fix: bound propagation involving conversion of large bignums to
1421 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
1423 * bug fix: &REST to &MORE conversion still works in unsafe call to known
1424 functions; reported by Lutz Euler (lp#826459).
1425 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
1428 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
1429 * enhancement: errors from FD handlers now provide a restart to remove
1430 the offending handler.
1431 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
1433 * enhancement: location of user or system initialization file can now easily
1434 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
1435 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
1436 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
1437 the thunk, as a keyword argument, :arguments.
1438 * enhancement: constraint propagation is simplified (and sped up) when
1439 COMPILATION-SPEED > SPEED.
1440 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
1441 * enhancement: debugger understands &MORE arguments better.
1442 * optimization: extracting bits of a single-float on x86-64 has been
1443 optimized. (lp#555201)
1444 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
1445 when (> SPEED SPACE).
1446 * optimization: local call trampolines (x86 and x86-64) are emitted
1448 * optimization: implicit value cells for dynamic-extent closed-over bindings
1449 on x86 and x86-64 can hold unboxed values as well.
1450 * meta-optimization: improved compilation speed, especially for large
1451 functions. (lp#792363 and lp#394206)
1452 * bug fix: bound derivation for floating point operations is now more
1453 careful about rounding possibly closing open bounds. (lp#793771)
1454 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
1455 backwards incompatible change in 1.0.48.27)
1456 * bug fix: occasional debugger errors in when a type-error occured in a
1457 function with dynamic-extent &rest list.
1458 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
1459 boa-construtors can be used to initialized structure slots.
1460 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
1461 (lp#795705, regression)
1462 * bug fix: DIRECTORY works better on logical pathnames.
1463 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
1464 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
1465 * bug fix: the compiler no longer constant-folds NaNs in
1466 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
1467 * bug fix: FORMAT now handles floating point rounding correct, eg.
1468 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
1470 * bug fix: style warning during lambda-list introspection of generic
1471 functions with both optional and key argments.
1472 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
1473 folding. (lp#729765)
1474 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
1477 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
1478 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
1479 interrupts for its body.
1480 * enhancement: source locations are now available for files loaded as
1481 source, compile-time-too evaluation, and initialization files.
1482 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
1483 virtual source-file information, eg. overriding input-file of COMPILE-FILE
1484 when a temporary file is used for compilation.
1485 * enhancement: ASDF has been updated to version 2.015.3.
1486 * enhancement: backtraces involving frames from the default evaluator are
1488 * enhancement: RUN-PROGRAM works with user-defined binary input and output
1490 * enhancement: more informative compile-time warnings and runtime errors for
1491 type-errors detected at compile-time.
1492 * enhancement: deadlock detection for mutexes and spinlocks.
1493 * enhancement: dynamic-extent for &rest lists stack allocate only their
1494 spines, not their argumets. While portable code should not rely on this,
1495 particularly in combination with inlining, it should make dynamic-extent
1496 easier to use safely.
1497 * enhancement: SB-POSIX improvements:
1498 ** WNOHANG and WUNTRACED are exported.
1499 ** SYSCALL-ERROR now also provides the name of the failing system call.
1500 * enhancement: --script improvements:
1501 ** errors on standard input, output, and error streams are handled and
1502 cause scripts to exit silently, making them easier to use in shell
1504 ** backtraces from scripts now go to standard error instead of the
1505 terminal even if one is available.
1506 ** --script can be an argument, causing the script to be loaded from
1508 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
1509 strings to foreign memory.
1510 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
1511 a file, making it easier to understand heap dynamics.
1512 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
1513 allows the compiler to automatically elide rest-list allocation so long as
1514 the call sites are in functions that the compiler knows cannot escape.
1516 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
1517 especially in safe code when none of the required arguments have changed
1519 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
1520 uninterruptible, as well as blocking reads from socket streams created
1521 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
1522 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
1523 from the to-char if the from-char is not a dispatch-macro character.
1524 * bug fix: references to undefined variables in function calls that are
1525 optimized away now signal a runtime error. (lp#722734)
1526 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
1527 types from a function defined in the same file. (regression from
1529 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
1531 * bug fix: spurious errors during QUIT when standard streams were closed.
1533 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
1534 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
1535 years, is now no longer supported.
1536 * enhancement: read() and write() have been added to SB-POSIX.
1537 * enhancement: types of DEFSTRUCT constructors are proclaimed more
1538 accurately, allowing better typechecking of call-sites.
1539 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
1540 are no longer caught. (reverted to pre 1.0.34 behaviour)
1541 * optimization: slightly faster ISQRT. (lp#713343)
1542 * bug fix: better support for Solaris /bin/sh in sh-based tests.
1543 * bug fix: TRACE behaves better when attempting to trace undefined
1544 functions. (lp#740717)
1545 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
1546 to (FUNCALL #'(LAMBDA ...) ...).
1547 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
1548 a compile-time error. (lp#720382)
1549 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
1551 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
1552 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
1553 optimization. (regression from 1.0.45.18/1.0.46.15)
1554 * bug fix: package locks did not protects against compile-time side-effects
1555 of DEFUN. (lp#675584)
1556 * bug fix: --dynamic-space-size argument is validated more carefully.
1558 * bug fix: memory fault from printing a malformed simple-condition.
1560 * bug fix: redefining classes so that slot-definition classes change now
1561 engages the obsolete instance protocol. (lp#766271)
1562 * bug fix: constant improper lists could break source coverage recording.
1564 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
1565 could exhaust stack.
1567 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
1568 * bug fix: fix mach port rights leaks in mach exception handling code on
1569 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
1571 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
1572 * enhancement: redefinition warnings for macros from different files. (lp#434657)
1573 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
1574 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
1575 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
1576 processed using EVAL -- now the appropriate toplevel form is reported instead.
1577 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
1578 declarations. (lp#726331)
1579 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
1580 that NIL/NULL is excluded from the type.
1581 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
1583 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
1584 and its compatriots.
1585 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
1586 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
1587 stack-allocated values out of their dynamic-extent. (lp#310175)
1588 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
1589 x86-64 builds caused a type-error.
1590 * bug fix: calling COMPILE with something else than a lambda-expression as the
1591 second argument reports a more sensible error. (lp#718905)
1592 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
1593 are detected. (lp#520607)
1594 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
1596 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
1597 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
1598 methods. (regression from 1.0.45.18)
1599 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
1600 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
1601 * bug fix: several foreign functions accepting string also accepted NIL and
1602 consequently caused a memory fault at 0 now signal a type-error instead.
1604 * bug fix: under rare circumstances, constraint propagation could rewrite a
1605 variable reference to refer to a variable not in scope, causing an error
1606 during physical environment analysis when attempting to close over the
1607 variable. (lp#551227)
1608 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
1610 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
1611 * enhancement: largefile support on Solaris.
1612 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
1613 arguments (lp#710017)
1614 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
1615 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
1617 * optimization: ERROR and CERROR are approximately 5 times faster.
1618 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
1619 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
1620 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
1621 up instance creation in those cases.
1622 * optimization: arithmetic operations with multiple constant arguments in now
1623 have them reduced at compile-time. (lp#676414)
1624 * optimization: determining current character position on string-streams for
1625 pretty-printing was overly slow.
1626 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
1627 lifetime analysis to overwrite closed-over variables (lp#681092).
1628 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
1629 were not handled correctly (lp#713063).
1630 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
1632 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
1633 mistake. (lp#667297).
1634 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
1635 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
1636 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
1637 unintern the wrong symbol with the same name. (lp#693796)
1638 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
1639 making it possible to restore the initial table if it has been messed up.
1642 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
1643 * enhancement: ~/ and ~user/ are treated specially in pathnames.
1644 Refer to documentation for details.
1645 * enhancement: ASDF has been updated to version 2.010.
1646 * optimization: mutated closed-over variables that are only accessed by
1647 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
1648 declared to be DYNAMIC-EXTENT) are stored directly in their containing
1649 stack frame, rather than allocating a VALUE-CELL (lp#586103).
1650 * optimization: UNWIND-PROTECT cleanup functions are now declared
1652 * bug fix: backtracing function with &REST arguments now shows the full
1653 argument list. (lp#310173)
1654 * bug fix: return types for functions with complex lambda-lists are now
1655 derived properly (lp#384892)
1656 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
1657 long string arguments slowed the compiler down to a crawl.
1658 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
1659 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
1660 in the DEFMETHOD body.
1661 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
1662 messages, being instead replaced with the corresponding function name.
1663 * bug fix: don't derive overly complex unions of numeric types for arithmetic
1664 operators. (lp#309448)
1666 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
1667 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
1668 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
1669 * enhancement: ALLOCATION-INFORMATION also provides the page the object
1671 * enhancement: default dynamic-space size can be configured at build-time
1672 without touching source, using the --dynamic-space-size argument to make.sh.
1673 * enhancement: DESCRIBE recognizes symbols naming optimization policy
1674 qualities, and mentions ALWAYS-BOUND declarations.
1675 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
1677 * enhancement: ASDF has been updated to 2.009.
1678 * enhancement: the system detects known type-erros in calls better,
1679 signalling a full warning about violated proclaimed FTYPEs and violations
1680 of derived FTYPEs within the same file, including self-calls.
1681 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
1682 * optimization: constant-folding exploits numeric and character types, in
1683 addition member types.
1684 * optimization: numeric, character and member types that are inhabited by
1685 exactly one value are tested with EQL.
1686 * optimization: more conditional branches are eliminated during IR1.
1687 Branches are simplified before performing if/if-conversion, and simple
1688 equivalent branches (that only read the same constant or variable) are
1690 * improvements to the Windows port:
1691 ** change: canonical unparsing form for pathname namestrings now uses / as
1692 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
1693 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
1694 on Windows. (thanks to Kalyanov Dmitry)
1695 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
1697 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
1698 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
1699 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
1700 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
1702 * bug fix: interrupts arriving during CL:OPEN caused an error.
1703 * bug fix: overeager character buffering could cause input to block
1704 spuriously when reading from a pipe (lp#643686)
1705 * bug fix: more efficient timer expiry should avoid starvation on systems
1706 where number of SIGALRMs per second is restricted. (lp#375515)
1707 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
1708 * bug fix: compile-times no longer scale linearly with the size of
1709 quoted lists in source-code. (lp#654289)
1710 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
1711 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
1712 so badly. (lp#654485)
1713 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
1714 an error for eg. STRUCTURE. (lp#458015)
1715 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
1716 (lp#613871, thanks to Roman Marynchak)
1717 * bug fix: more reliable &REST list type derivation. (lp#655203)
1718 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
1719 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
1720 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
1721 also declared NOTINLINE. (lp#655581)
1722 * bug fix: the compiler could attempt to emit constant left shifts of
1723 greater value than n-word-bits. (lp#309063)
1724 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
1725 type information for the function being set. (lp#659220)
1726 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
1727 containing self-calls were recompiled with a new signature, and failed
1728 to warn when a self-call using the old signature was left in. (lp#655126)
1729 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
1730 :DEFAULT when the default external had character size other than 8 bits.
1732 * bug fix: derived types of functions in the same file were implicitly
1733 trusted, leading to potential heap corruption when those function were
1734 defined incompatibly. (lp#657499)
1735 * bug fix: existing ASDF source registries are ignored when building
1736 contribs (lp#659105)
1737 * bug fix: short-form DEFSETF checks that the second argument is a symbol
1738 (lp#655824, thanks to Roman Marynchak)
1739 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
1740 package-lock violation was detected. (lp#660752)
1741 * bug fix: the system can store different docstrings for a single function
1742 under different names. (lp#661631, regression from 1.0.29.24)
1743 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
1744 properly. (lp#384801)
1745 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
1746 of specified length could confuse the type derivation in unsafe code.
1748 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1749 fork with multiple Lisp threads running is made on every platform,
1750 not just Darwin. (lp#451111)
1751 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1752 around when core was saved, which could cause undefined behaviour when the
1754 * bug fix: Allow UNTRACE of functions that are no longer defined
1755 (lp#667657, thanks to Attila Lendvai)
1756 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1757 compile-time warning (lp#664373, thanks to Stas Boukarev)
1759 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1760 * incompatible change: FD-STREAMS no longer participate in the serve-event
1761 event-loop by default. (lp#316072)
1762 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1763 affects streams from CL:OPEN.
1764 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1765 default, but this is liable to change: applications needing serve-event
1766 for socket streams should explicitly request it using :SERVE-EVENTS T
1768 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1770 * enhancement: CLOS effective method functions and defclass slot typechecking
1771 function now have debug names for use in backtraces and profiles.
1772 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1774 * enhancement: symbols are printed using fully qualified names in several
1775 error and warning messages which are often associated with package
1776 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1777 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1778 thanks to Andrew Golding)
1779 * bug fix: reading /proc files on Linux works. (lp#425199)
1780 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1782 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1783 breaking code that tried to write the value of a printer control variable.
1784 (lp#581564, thanks to Stas Boukarev)
1785 * bug fix: WRITE compiler macro did not handle output stream designators
1786 correctly. (lp#598374, thanks to Stas Boukarev)
1787 * bug fix: better availability of names of foreign functions in backtraces
1788 on Linux. (lp#626962, thanks to Stas Boukarev)
1789 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1790 lp#627581, thanks to Josh Elsasser and Jim Wise)
1791 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1792 thanks to Josh Elsasser)
1793 * bug fix: using aliases for builtin classes as defmethod specializers
1794 without adding DEFTYPEs for them works. (lp#618387)
1795 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1797 * bug fix: legally dynamic-extent lists and vectors used as
1798 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1799 * bug fix: inline-expansion creating references to dead lambda-variables
1800 (lp#454681, thanks to Alexey Dejneka)
1801 * bug fix: better error message for bogus numerical arguments to RANDOM.
1802 (lp#598986, thanks to Stas Boukarev)
1803 * bug fix: the compiler occasionally inlined references from incompatible
1804 environments occurs. (lp#308951)
1805 * bug fix: the compiler threw an error when trying to compile a local
1806 function (labels or flet) known to take a specialized complex argument.
1807 (not in launchpad, reported by sykopomp in #lispgames)
1808 * bug fix: package-locks failed to protect against compile-time effects of
1809 DEFUN when the symbol previously had a macro definition. (lp#576637)
1810 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1811 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1812 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1813 * bug fix: evaluation in debugger REPL works using the global context when
1814 in frames that do not have sufficient debug information.
1815 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1817 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1819 * bug fix: interrupt taking longer than the requested period caused SLEEP
1820 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1822 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1824 ** Cross-compilation host is now specified to make.sh using
1825 command-line argument --xc-host=<command> instead of a positional
1826 argument. (thanks to Daniel Herring)
1827 ** Install location can be specified to make.sh using command-line
1828 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1829 * optimization: The default implementation of
1830 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1831 * enhancement: Explicit memory barrier operations are now available for use
1832 by multithreaded code. See documentation for details.
1833 * enhancement: Experimental support for threading on Linux/PPC.
1834 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1835 * bug fix: EXPT signals an error if first argument is a zero and second
1836 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1837 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1838 (lp#576594, thanks to Roman Marynchak)
1839 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1840 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1842 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1843 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1844 cached, leading to many fewer expensive calls to
1845 COMPUTE-APPLICABLE-METHODS.
1846 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1847 CLASS argument, search for and call an appropriate optimized ctor function
1849 * bug fix: WRITE always returns the correct value.
1851 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1852 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1853 * bug fix: Name conflicts between symbols passed as arguments to a single
1854 call to IMPORT no longer add multiple symbols with the same name to the
1855 package (detectable via DO-SYMBOLS).
1856 * bug fix: support building without the dlshim on darwin x86 and x86-64
1858 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1860 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1861 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1863 * bug fix: linkage-table entries on PPC now no longer overflow their
1864 space allocation (potentially causing crashes if they are written out
1866 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1867 platforms, preventing the GC from seeing stale pointers on the control
1868 stack in subsequent GCs (which would, and does, break invariants).
1869 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1870 * bug fix: Literal characters with code points greater than about 32767
1871 now work on PPC UNICODE builds.
1872 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1873 high order bits are explicitly cleared out. In some contrived situations,
1874 this could lead to wrong results in mixed real/complex float arithmetic.
1875 * bug fix: Fix function/macro redefinition warnings when building with
1876 clisp. (lp#576787, thanks to Josh Elsasser)
1877 * new platform: experimental support for ppc/openbsd (thanks to Josh
1879 * bug fix: Floating-point traps now work on ppc/linux.
1881 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1882 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1883 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1884 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1885 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1886 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1887 SB-THREAD:GRAB-MUTEX.
1888 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1889 contain additional data structures and tools for concurrent programming;
1890 at the moment it contains a lock-free queue, and a lock-free mailbox
1892 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1893 GET-MUTEX but takes &key rather than &optional parameters. Also added
1894 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1896 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1897 SB-THREAD:WAIT-ON-SEMAPHORE.
1898 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1900 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1901 conditions to defer the deadline for forever.
1902 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1904 * enhancement: errors from NO-APPLICABLE-METHOD and
1905 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1906 generic function call.
1907 * enhancement: SB-BSD-SOCKET improvements
1908 ** sockets and socket streams now have a more informative printed
1909 representation based on the corresponding SOCKET-NAME and
1911 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1913 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1914 CL:CLOSE when appropriate, and no longer disassociates the stream
1915 from the socket if close failed. (lp#543951)
1916 * improvements to the instrumenting profiler
1917 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1918 ** optimization: counters no longer use locks for the overflow mode.
1919 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1920 incurred an off-by-one miscount.
1921 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1922 * enhancement: improved DEFMETHOD pretty-printing.
1923 * enhancement: perform range reduction when arguments are too large for
1924 x87's transcendentals (instead of returning 0). (lp#327192)
1925 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1926 some of CL-PPCRE's macros. (lp#570079)
1927 * enhancement: our machine code is slightly less hostile to valgrind on
1929 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1930 to Robert Swindells and Aleksej Saushev)
1931 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1932 * bug fix: a rare case of startup-time page table corruption.
1933 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1934 to timeouts could be left in an inconsistent state.
1935 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1936 * bug fix: misoptimization of multiplication by one in
1937 (SB-C::FLOAT-ACCURACY 0) policies.
1938 * bug fix: miscounts in SB-PROFILE.
1939 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1940 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1941 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1942 up itself" (March 2010) for further details.
1943 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1944 against length of the list if the element is found before the specified
1945 END is reached. (thanks to Alec Berryman, lp#554385)
1946 * bug fix: errors signalled during package graph modification no longer
1947 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1948 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1949 :SB-DOC feature. (lp#552564)
1950 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1951 * bug fix: more robust runtime executable path detection. (lp#375549)
1952 * bug fix: GCD always returns positive values. (lp#413680)
1953 * bug fix: Converting division to multiplication by reciprocal handles
1955 * bug fix: We were too eager in eliding range reduction tests on x87.
1956 The maximal magnitude is 2^63, not 2^64.
1957 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1959 * bug fix: Maybe restore buildability on Alpha.
1960 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1962 * bug fix: RANDOM-STATE can be printed readably again.
1963 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1964 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1965 types) could result in type mismatches during compilation.
1967 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1968 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1969 stack frame thrown from.
1970 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1971 compiler optimization qualities inside dynamic extent of its body.
1972 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1973 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1975 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1976 constraint propgation, allowing better compilation eg. when used to
1977 access structures with WITH-SLOTS. (lp#520366)
1978 * optimization: the compiler is now more aware of the type of the underlying
1979 storage vector for multidimensional simple arrays resulting in better code
1980 for accessing such arrays.
1981 * optimization: passing NIL as the environment argument to TYPEP no longer
1982 inhibits optimizing it. (lp#309788)
1983 * optimization: more efficient register usage when handling single-float
1984 arguments on x86-64. (thanks to Lutz Euler)
1985 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1986 pre-allocated temporary vectors. (lp#496249)
1987 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1988 in :INITIAL-CONTENTS. (lp#523612)
1989 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1990 functions. (lp#524707)
1991 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1992 WITH-SLOTS usages during compilation.
1993 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1994 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1995 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1996 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1997 instruction (tested on x86oid linux with ud2-breakpoints).
1998 * bug fix: slam.sh now works on win32.
1999 * bug fix: better differences of numeric types. (lp#309124)
2000 * bug fix: arrays declared intersection and union types can have their
2001 upgraded element type derived. (lp#316078)
2002 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
2003 threads started during profiling. (lp#472499)
2004 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
2006 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
2007 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
2008 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
2009 values instead of signaling an error. (lp#309093)
2010 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
2012 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
2013 declarations (lp#497321)
2014 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
2015 and failed to detect circular lists (lp#452008)
2016 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
2018 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
2019 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
2020 due to it, so that handlers can run.
2021 * bug fix: reparsing undefined types if they have become defined since
2022 parsing. (lp#309128)
2023 * bug fix: missing &REST type in a proclamation for a function with both
2024 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
2025 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
2026 expanded calls (lp#542174)
2027 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
2028 than just at toplevel form.
2030 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
2031 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
2032 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
2033 but work on type specifiers.
2034 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
2035 to name a type specifier.
2036 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
2037 specifier is valid where "valid" basically means "would be accepted as
2038 second argument of TYPEP".
2039 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
2040 returns the function's declared, or derived FTYPE.
2041 * new feature: SB-POSIX now supports accessing the d_ino member of
2042 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
2043 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
2044 provide for seeding a RANDOM-STATE object with user-provided data or
2045 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
2046 attempt to initialize the returned state from the operating system's
2047 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
2048 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
2049 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
2050 * bug fix: Fix grammar and style issues for the docstrings of
2051 printer-related variables and functions. (Thanks to mon_key; launchpad
2053 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
2055 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
2056 in a row even though a handler defered the deadline long into the
2058 * bug fix: A deadline handler was run without interrupts enabled for a
2059 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
2060 in infinitely spinning, non-killable threads.
2061 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
2062 before reaching the erring stack frame.
2063 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
2064 real power. (launchpad bug lp#525949)
2065 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
2066 GENCGC platforms. (launchpad bug lp#529014)
2067 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
2068 (launchpad bug lp#525916)
2069 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
2070 (Thanks to Robert Goldman)
2072 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
2073 * optimization: ROUND with a single single-float or double-float argument
2074 is properly inlined when possible.
2075 * optimization: Slightly better code is generated for integer<->float
2076 conversions and for single-float<->double-float conversions on x86-64.
2077 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
2078 code for 32-bit and 64-bit rotations on x86-64.
2079 * bug fix: The install script changes the ownership of directories as well
2080 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
2081 launchpad bug lp#508485)
2082 * bug fix: TRUNCATE with a single single-float or double-float argument is
2083 properly inlined when possible. (launchpad bug lp#489388)
2084 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
2085 no longer causes a compiler error on x86 and ppc.
2086 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
2087 always relative to *READTABLE* rather than the passed argument.
2089 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
2090 * minor incompatible change: threading support is now enabled by default
2092 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
2094 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
2095 are now caught and reported just like errors during macroexpansion.
2096 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
2097 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
2098 * enhancement: ASDF systems can now depends on SB-QUEUE.
2099 * fixes and improvements related to Unicode and external formats:
2100 ** bug fix: error handling and restart usage in the ucs-2 external format
2102 ** there is now an implementation of the ucs-4 external format.
2103 ** the utf-16 and utf-32 external formats are supported.
2104 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
2105 in the environment. setenv() and unsetenv() are also provided. (reported by
2106 Fare Rideau; launchpad bug lp#460455)
2107 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
2108 loading. This ensures sensible errors for .FASL files from other
2109 implementations on case-insensitive filesystems. (reported by Willem
2110 Broekema; launchpad bug lp#489417)
2111 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
2112 Willem Broekema; launchpad bug lp#489698).
2113 * bug fix: some minor code rearrangements to reenable warning-free building
2114 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
2115 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
2117 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
2120 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
2121 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
2122 * improvement: support O_LARGEFILE access to files larger than 2GB on
2123 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
2124 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
2125 definitions for methods specializing on the passed class itself.
2126 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
2127 definitions for methods specializing on the passed class itself, or on
2129 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
2130 about itself during the build (e.g. for M-? in Slime), if this flag is
2131 enabled in customize-target-features.lisp. This will increase the core
2132 size by about 5-6mb, though, so it's mostly interesting to SBCL
2134 * new feature: various GENCGC tuning parameters have been experimentally
2135 documented and exported from SB-EXT. See documentation for details.
2136 * fixes and improvements related to Unicode and external formats:
2137 ** the Unicode character database has been upgraded to the
2138 Unicode 5.2 standard, giving names and properties to a number of new
2139 characters, and providing a few extra characters with case
2141 ** improvement: restarts for providing replacement input/output on coding
2142 errors for fd-stream external formats.
2143 ** improvement: where :<encoding> is a keyword corresponding to an
2144 external format the system supports, it is now possible to specify
2145 (:<encoding> :replacement <character>) as an external format which will
2146 automatically substitute <character> on encoding or decoding errors for
2147 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
2149 ** improvement: the file streams underlying the standard streams (such as
2150 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
2151 which uses the replacement mechanism to handle encoding errors,
2152 preventing various infinite error chains and unrecoverable I/O
2154 ** minor incompatible change: the utf-8 external format now correctly
2155 refuses to encode Lisp characters in the surrogate range (char-codes
2156 between #xd800 and #xdfff).
2157 ** fix a typo preventing conversion of strings into octet vectors
2158 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
2160 ** fix a bug in the octet multibyte handling of decoding errors and the
2161 USE-VALUE restart. (launchpad bug lp#314939)
2162 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
2163 restart on fd-stream decoding errors.
2164 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
2165 error is near the end of file.
2166 ** fix a double-error case in unibyte octet conversions, when the first
2167 use of USE-VALUE is ignored.
2168 ** fix bugs in handling of undefined code points in unibyte encodings.
2169 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
2170 streams after an UNREAD-CHAR.
2171 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
2172 object is allocated in a boxed region of dynamic space.
2173 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
2174 fork with multiple Lisp threads running is made, instead of going
2175 ahead with unpredictable consequences. (reported by Leslie Polzer)
2176 * bug fix: uses of slot accessors on specialized method parameters within
2177 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
2178 error while finalizing the class. This fix may cause classes with slot
2179 accessors to be finalized later than previously. (reported by Lars Rune
2180 Nøstdal; launchpad bug lp#473699)
2181 * bug fix: restore buildability on the MIPS platform. (regression from
2182 1.0.30.38, reported by Samium Gromoff)
2183 * bug fix: inspecting closures is less likely to fail with a type error.
2184 * bug fix: no timer starvation when setting the system clock back.
2185 (launchpad bug lp#460283)
2186 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
2187 standard pprint dispatch table as specified by CLHS.
2188 * bug fix: give CLISP a hint about a type declaration to enable it to build
2189 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
2191 * bug fix: correctly dump literal objects in defaulting forms of arglists.
2192 (reported by Attila Lendvai; launchpad bug lp#310132)
2193 * bug fix: distinguish in type specifiers between arrays that might be
2194 complex and arrays that are definitely complex. (launchpad bug lp#309129)
2195 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
2196 type. (reported by Levente Mészáros; launchpad bug lp#485972)
2197 * bug fix: setting the value of a symbol-macro within a method in the
2198 presence of type declarations works properly again. (reported by Iban
2199 Hatchondo; launchpad bug lp#485019)
2201 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
2202 * optimization: faster FIND and POSITION on strings of unknown element type
2203 in high SPEED policies. (thanks to Karol Swietlicki)
2204 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
2206 * improvement: better error signalling for bogus parameter specializer names
2207 in DEFMETHOD forms (reported by Pluijzer)
2208 * bug fix: DELETE-FILE once again works on logical pathnames (regression
2210 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
2212 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
2213 removes previous default initargs (reported by Lars Rune Nøstdal and
2215 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
2216 lambda-lists. (reported by Peter Seibel)
2217 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
2218 correctly when starting from an executable core without saved runtime
2219 options (reported by Faré Rideau, thanks to Zach Beane)
2220 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
2221 an optimization note instead. (reported by Martin Cracauer)
2222 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
2223 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
2224 new process group if it doesn't need to share stdin with the sbcl
2225 process. (thanks to Leslie Polzer)
2226 * bug fix: SATISFIES could be misoptimized to refer to a local function.
2227 (reported by Stanislaw Halik)
2229 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
2230 * improvement: stack allocation is should now be possible in all nested
2231 inlining cases: failure to stack allocate when equivalent code is manually
2232 open coded is now considered a bug.
2233 * improvements related to Unicode:
2234 ** the Unicode character database has been upgraded to the
2235 Unicode 5.1 standard, giving names and properties to a number of new
2236 characters, and providing a few extra characters with case
2238 ** the system now recognizes and produces names for Unicode Hangul
2239 syllable characters.
2240 ** the EBCDIC-US external-format is now supported for octet operations
2241 (as well as for stream operations).
2242 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
2243 be used to output toplevel compile-time effects into a separate .CFASL
2245 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
2246 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
2248 * optimization: TRUNCATE on known single- and double-floats is upto 25%
2250 * optimization: division of floating point numbers by constants uses
2251 multiplication by reciprocal when an exact reciprocal exists.
2252 * optimization: multiplication of single- and double-floats floats by
2253 constant two has been optimized.
2254 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
2255 sufficient type information is available. (thanks to Leslie Polzer)
2256 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
2257 known structure objects are as efficient as defstruct generated accessors.
2258 * optimization: unused vector creation can now be optimized away.
2259 * improvement: ASDF systems can now depends on SB-INTROSPECT.
2260 * improvement: a STYLE-WARNING is signalled when a generic function
2261 clobbers an earlier FTYPE proclamation.
2262 * improvement: the compiler is able to track the effective type of
2263 generic function across method addition and removal even in the
2264 absence of an explicit DEFGENERIC.
2265 * improvement: DESCRIBE now reports on symbols naming undefined
2266 but assumed or declared function as well.
2267 * improvement: recompilation of systems using SB-GROVEL now works
2268 (thanks to Leslie Polzer)
2269 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
2270 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
2272 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
2273 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
2274 well as user defined declaration names.
2275 ** VARIABLE-INFORMATION is now aware of alien variables.
2276 * improvement: improved address space layout on OpenBSD (thanks to Josh
2278 * improvement: pretty-printing of various Lisp forms has been improved
2279 (thanks to Tobias Rittweiler)
2280 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
2281 unused were deleted in safe code. (reported by John Fremlin)
2282 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
2284 * bug fix: some out-of-line array predicates were missing (reported by
2286 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
2288 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
2289 (thanks to Larry D'Anna)
2290 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
2291 as well. (reported by Josh Elsasser)
2292 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
2293 leading to possible attempts to delete the same file twice. See docstring
2294 on DELETE-FILE for details. (reported by John Fremlin)
2295 * bug fix: DELETE-FILE once again deletes the file named by the pathname
2296 designator argument, rather than its truename. (reported by Luis
2298 * bug fix: the low-level debugger had 32-bit assumptions and was missing
2299 information about some array types. (thanks to Luis Oliveira)
2300 * bug fix: moderately complex combinations of inline expansions could
2301 be miscompiled if the result was declared to be dynamic extent.
2302 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
2303 form (+ <variable> <integer>) were miscompiled under certain
2305 * bug fix: in some cases no compiler note about failure to stack allocate
2306 was emitted, even if the objects were in fact heap allocated.
2307 * bug fix: minor violation of "otherwise inaccessible" rule for stack
2308 allocation could cause objects users might reasonably expect to
2309 be heap allocated to be stack allocated.
2310 * bug fix: DESCRIBE signalled an error for generic functions under
2311 certain circumstances. (thanks to Leslie Polzer)
2312 * bug fix: Fixed spelling of an error message.
2314 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
2315 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
2316 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
2317 of SB-THREAD:THREAD-ERROR-THREAD.
2318 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
2319 * new feature: docstrings for local and anonymous functions are no longer
2320 discarded. (thanks to Leslie Polzer)
2321 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
2322 values in other threads.
2323 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
2324 about object allocation.
2325 * optimization: division of a real float by a complex float is implemented
2326 with a specialised code sequence.
2327 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
2328 keywords is an order of magnitude faster.
2329 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
2330 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
2331 methods, and similarly for non-standard metaclass classes as long as there
2332 are no methods additional on MAKE-INSTANCE.
2333 * optimization: more efficient type-checks for FIXNUMs when the value
2334 is known to be a signed word on x86 and x86-64.
2335 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
2336 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
2338 * optimization: compiler is smarter about delegating argument type checks to
2340 * optimization: several character functions are now compiled somewhat more
2341 efficiently. (reported by Lynn Quam)
2342 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
2343 * improvement: less unsafe constant folding in floating point arithmetic,
2344 especially for mixed complex/real -float operations.
2345 * optimization: constant double and single floats are stored in native
2346 unboxed format on x86[-64].
2347 * optimization: smarter code for arithmetic operations with constant floats,
2348 complex floats, or integers on x86[-64].
2349 * optimization: smarter code for conjugate/multiplication of float complexes
2350 and abs/negate of floats on x86-64.
2351 * optimization: more efficient complex float and real float operations on
2353 * improvement: complex float division is slightly more stable.
2354 * improvement: DESCRIBE output has been reworked to be easier to read and
2355 contains more pertinent information.
2356 * improvement: failure to provide requested stack allocation compiler notes
2357 provided in all cases (requested stack allocation not happening without a
2358 note being issued is now considered a bug.)
2359 * bug fix: SB-POSIX exports the documented types and functions
2360 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
2361 types. (reported by "abhi")
2362 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
2363 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
2364 (thanks to Paul Khuong)
2365 * bug fix: looping around HANDLER-CASE could silently consume stack space
2366 on each iteration. (reported by "foobar")
2367 * bug fix: better error signalling when calls to functions seeking elements
2368 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
2369 (reported by Tobias Rittweiler)
2370 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
2371 directory components now works as it used to. (various prolems reported by
2372 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
2373 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
2374 (reported by Elliot Slaughter, thanks to Stas Boukarev)
2375 * bug fix: bogus undefined variable warnings from fopcompiled references to
2376 global variables. (thanks to Lars Rune Nøstdal)
2377 * bug fix: foreign function names should now appear in backtraces on
2378 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
2379 * bug fix: SETF compiler macro documentation strings are not discarded
2381 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
2382 (thanks to Alex Plotnick)
2383 * bug fix: SLEEP accepts large integer arguments, truncating them to
2384 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
2385 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
2386 * bug fix: compiler notes for expensive slot type checks could be emitted
2387 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
2389 changes in sbcl-1.0.29 relative to 1.0.28:
2390 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
2391 https://bugs.launchpad.net/sbcl
2392 Bugs can be reported directly there, or by sending email to
2393 sbcl-bugs@lists.sourceforge.net
2394 (no subscription required.)
2395 * minor incompatible change: under weak type checking policy integer
2396 types are weakened less aggressively.
2397 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
2398 allowed to return, which causes SBCL to quit with exit status 0. Previously
2399 if the function returned with a small integer return value, that value
2400 was accidentally reused as the exit status.
2401 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
2402 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
2403 :HASH-FUNCTION argument. Refer to user manual for details.
2404 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
2406 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
2407 microseconds since the Unix epoch on all platforms.
2408 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
2409 allows the compiler to safely elide boundedness checks for special
2411 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
2412 the symbol, prohibits both lexical and dynamic binding. This is mainly an
2413 efficiency measure for threaded platforms, but also valueable in
2415 * new feature: UNC pathnames are now understood by the system on Windows.
2416 * optimization: the compiler uses a specialized version of FILL when the
2417 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
2419 * optimization: accesses to potentially non-simple arrays where element type
2420 is known are 50% faster.
2421 * optimization: compiler now generates faster array typechecking code.
2422 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
2424 * optimization: multidimensional array accesses in the absence of type
2425 information regarding array rank are approximately 10% faster due to
2426 open coding of ARRAY-RANK.
2427 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
2428 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
2430 * optimization: result of call to VECTOR can now be stack allocated.
2431 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
2432 as long as the resulting array is one-dimensional and has a known
2433 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
2434 length of the list matches the known length of the vector does not
2435 allocate the list as an intermediate step. Ditto for VECTOR and simple
2437 * optimization: MAKE-ARRAY can now stack allocate in the presence of
2438 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
2439 known element type, and is known to be simple and one dimensional.
2440 * improvement: SBCL now emits a compiler note where stack allocation was
2441 requested but could not be provided (not in all cases, unfortunately)
2442 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
2443 * improvement: pretty-printing loop has been implemented properly. (thanks
2444 to Tobias Rittweiler)
2445 * documentation: CLOS slot typechecing policy has been documented.
2446 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
2447 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
2448 pointer, leading to memory faults. (thanks to Bart Botta)
2449 * bug fix: better floating point exception handling on x86/OpenBSD.
2450 (thanks to Josh Elsasser)
2451 * bug fix: exit status from QUIT when called under --script was lost
2452 (reported by Hubert Kauker)
2453 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
2454 same implementation of FILL to initialize the array, even if a more
2455 efficient one was available (reported by Stas Boukarev, thanks to
2457 * bug fix: potential miscompilation of array stack allocation on x86 and
2458 x86-64. (reported by Time Tossavainen)
2459 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
2460 result in their subforms being treated as top level forms. (reported by
2462 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
2463 than a machine register could leave garbage in the high bits of the
2464 result register (bug 316325).
2465 * bug fix: disable address space randomization Linux/x86-64 as well,
2466 not just x86-64. (reported by Ken Olum)
2467 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
2468 generate incorrect code.
2469 * bug fix: #201; type inference for CONS and ARRAY types could derive
2470 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
2471 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
2472 could not be assigned to or bound with PROGV. (reported by Lorenz
2474 * bug fix: the value of CL:- in the inspector was the previous expression
2475 evaluated rather than the expression being evaluated.
2476 * bug fix: constants can no longer be locally declared special.
2477 * bug fix: signals delivered to threads started from foreign land (read:
2478 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
2479 thread by blocking all signals and resignalling.
2480 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
2481 from :INITFORM, if any.
2483 changes in sbcl-1.0.28 relative to 1.0.27:
2484 * a number of bugs in cross-compilation have been fixed, with the ultimate
2485 result that building under (at least) clisp should be much more reliable.
2486 * minor incompatible changes: echo-streams now propagate unread-char to the
2487 underlying input stream, and no longer permit unreading more than one
2489 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
2490 frames, allowing for instance more reliable backtraces.
2491 * improvement: the debugger REPL can now reference lexical variables
2492 by name directly for code compiled with (DEBUG 3).
2493 * improvement: errors from malformed declarations now have better source
2494 paths associated with them. (thanks to Tobias Rittweiler)
2495 * optimization: faster local calls on x86/x86-64
2496 * bug fix: some error messages for out-of-bound array indexes confused the
2497 index and the bound. (thanks to Stas Boukarev)
2498 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
2500 * bug fix: running regressions tests in shells without OSTYPE set now works.
2501 (reported by Harald Hanche-Olsen)
2502 * bug fix: more robust static space exhaustion signalling from
2503 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
2504 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
2505 docstring away instead of storing it under names such as (LAMBDA (X)).
2506 (reported by Leslie Polzer)
2507 * bug fix: timers could go off in the wrong order, be delayed indefinitely
2508 (thanks to Ole Arndt for the patch)
2509 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
2510 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
2511 potentially-invalid effective methods in its cache.
2512 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
2513 instances as well (thanks to Paul Khuong)
2514 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
2515 SB-POSIX:WAITPID and their C equivalents.
2516 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
2518 changes in sbcl-1.0.27 relative to 1.0.26:
2519 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
2520 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
2521 * improvement: the system either recovers from stack exhaustion or dies
2522 properly as opposed to leaving the user uncertain of whether the handler
2523 trampled on some random memory next to the stack or having to rely on
2524 --lose-on-corruption (which is still a good idea to use in production
2525 because stack exhaustion can happen in signal handlers which will likely
2527 * bug fix: fix gc related interrupt handling bug on ppc (regression from
2528 1.0.25.37, reported by Harald Hanche-Olsen)
2529 * bug fix: work around signal delivery bug in darwin (regression from
2530 1.0.25.44, reported by Sidney Markowitz)
2531 * bug fix: fix ERROR leaking memory (reported by David Thompson)
2533 changes in sbcl-1.0.26 relative to 1.0.25:
2534 * incompatible change: an interruption (be it a function passed to
2535 INTERRUPT-THREAD or a timer function) runs in an environment where
2536 interrupts can be enabled. The interruption can use
2537 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
2538 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
2539 potentially running out of stack. Keep in mind that in the absence
2540 of WITHOUT-INTERRUPTS some potentially blocking operation such as
2541 acquiring a lock can enable interrupts.
2542 * incompatible change: GC-OFF and GC-ON are removed, as they were
2543 always unsafe. Use WITHOUT-GCING instead.
2544 * new feature: runtime option --disable-ldb
2545 * new feature: runtime option --lose-on-corruption to die at the
2546 slightest hint of possibly non-recoverable errors: running out of
2547 memory, stack, alien stack, binding stack, encountering a memory
2548 fault, etc. In the absence of --lose-on-corruption a warning is
2550 * enhancement: detect binding stack exhaustion
2551 * enhancement: detect alien stack exhaustion on x86/x86-64
2552 * improvement: generally more stable and reliable interrupt handling
2553 * improvement: there is a per thread interruption queue,
2554 interruptions are executed in order of arrival
2555 * improvement: a repeating timer reschedules itself when the it has
2556 finished, but expiration times are spaced equally. If an
2557 expiration time is in the past it will trigger after a short grace
2558 period that may give a chance to other things to run.
2559 * optimization: slightly faster gc on multithreaded builds
2560 * optimization: faster WITHOUT-GCING
2561 * bug fix: when JOIN-THREAD signals an error, do it when not holding
2562 important locks so that the debugger/handler doesn't produce
2563 recursive errors or deadlock.
2564 * bug fix: real-time signals are not used anymore, so no more
2565 hanging when the system wide real-time signal queue gets full.
2566 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
2568 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
2569 * bug fix: fix random memory faults related to interrupts on alpha
2570 * bug fix: fix random memory faults related to interrupts on sparc
2571 * bug fix: fix deadlocks related to starting threads
2572 * bug fix: fix deadlines on locks on futex platforms
2573 * bug fix: restore errno in signal handlers
2574 * bug fix: fix deadlocks related to hash tables
2575 * bug fix: fix deadlocks in pcl
2577 changes in sbcl-1.0.25 relative to 1.0.24:
2578 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
2579 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
2580 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
2581 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
2582 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
2583 better name and does not return values so stale on multiprocessor systems.
2584 Also, HOLDING-MUTEX-P was added for about the only sane usage of
2586 * improvement: unithread builds keep track of MUTEX-VALUE.
2587 * improvement: reading from a TWO-WAY-STREAM does not touch the output
2588 stream anymore making it thread safe to have a concurrent reader and
2589 a writer, for instance, in a pipe.
2590 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
2591 arguments, making compiler-macros for SETF-functions able to inspect
2592 their constant arguments.
2593 * improvement: COMPILE-FILE reports times with millisecond accuracy
2594 (thanks to Luis Oliveira)
2595 * optimization: CHAR-CODE type derivation has been improved, making
2596 TYPEP elimination on subtypes of CHARACTER work better. (reported
2597 by Tobias Rittweiler, patch by Paul Khuong)
2598 * bug fix: setting alien structure fields of type struct by value now
2599 computes the right offset for the memory copy.
2600 * bug fix: compilation problem involving inlined calls to aliens with
2601 result type VOID. (reported by Ken Olum)
2602 * bug fix: #235a; sequential inline expasion in different policies no
2603 longer reuses the functional from the previous expansion site.
2604 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
2605 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
2606 * bug fix: named ENUMs in multiply-referenced alien record types no longer
2607 cause an implied type redefinition. Regression from 1.0.21.29.
2608 * bug fix: sign-extension of small signed return values now works with C
2609 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
2610 * improvements to the Windows port:
2611 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
2612 Westfold, thanks to Rudi Schlatte)
2614 changes in sbcl-1.0.24 relative to 1.0.23:
2615 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
2616 vector of a multidimensional SIMPLE-ARRAY.
2617 * new feature: the system now signals a continuable error if standard
2618 readtable modification is attempted. (thanks to Tobias Rittweiler)
2619 * new feature: DIRECTORY has been extended with a non-standard keyword
2620 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
2621 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
2622 has been robustified and documented better. (thanks to Robert Goldman)
2623 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
2624 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
2625 * tradeoff: constant FORMAT control strings are now compiled unless
2626 SPACE > SPEED (previously only when SPEED > SPACE.)
2627 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
2629 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
2631 * bug fix: lexical type declarations are now correctly reported by
2632 SB-CLTL2. (reported by Larry D'Anna)
2633 * bug fix: STRING-TO-OCTETS did not handle :START properly when
2634 using UTF-8 as external format. (thanks to Luis Oliveira)
2635 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
2636 are signalled correctly. (thanks to Stas Boukarev)
2637 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
2638 designator. (thanks to Tobias Rittweiler)
2639 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
2640 designator, and returns T instead of the function. (thanks to
2642 * bug fix: direct superclasses of STANDARD-CLASS and
2643 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
2644 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
2645 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
2646 when no class with the named slot yet exists no longer causes a
2647 compile-time style-warning.
2648 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
2649 in safe code. (reported by Didier Verna)
2650 * bug fix: #430; nested structure constructors can stack allocate.
2651 * bug fix: on some 64-bit platforms dynamic space size was truncated
2652 to #xffff0000 bytes. (reported by Benjamin Lambert)
2653 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
2654 REPL unusable. (reported by Daniel Herring)
2655 * bug fix: return values of READ-SEQUENCE did not take :START into
2656 account on file streams, regressions since 1.0.12.22. (reported by
2657 Thomas Russ, patch by Paul Khuong)
2658 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
2659 method specializer used to confuse permuation vector optimization.
2660 * bug fix: system inserted bogus implicit type declarations for local
2661 special variables in DEFMETHOD bodies.
2662 * bug fix: #354; duplicated frames in backtraces due to
2663 non-tail-call-optimized XEPs to functions with return type NIL
2665 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
2666 initializes structure object slots according to DEFSTRUCT initforms,
2667 and DEFSTRUCT forms :INCLUDEind structure classes defined using
2668 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
2669 (reported by Bruno Haible and Stephen Wilson)
2670 * bug fix: #395; fill-pointer output streams used now support
2671 element-type BASE-CHAR as well.
2672 * bug fix: compiler error when attempting to derive return value of
2673 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
2675 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
2677 * bug fix: Mac OS X binaries should now be portable between Leopard
2680 changes in sbcl-1.0.23 relative to 1.0.22:
2681 * enhancement: when disassembling method functions, disassembly
2682 for the associated fast function is also produced.
2683 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
2685 * optimization: printing with *PRINT-PRETTY* true is now more
2686 efficient as long as the object being printed doesn't require
2687 special handling by the pretty printer.
2688 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
2689 now interact correctly with type declarations.
2690 * partial bug fix: PCL detects infinite recursion during wrapper
2691 validation. (thanks to Attila Lendvai)
2692 * bug fix: #426; nested function calls are inlined properly.
2693 Previously if FOO was an inline function, in calls of the form
2694 (FOO (FOO ...)) the outer call was not inlined.
2695 * bug fix: long long arguments passed in registers to alien
2696 functions on PowerPC Linux and NetBSD are now handled correctly
2697 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
2699 changes in sbcl-1.0.22 relative to 1.0.21:
2700 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
2701 for the shared object in the current directory, but passes the native
2702 namestring of the designated pathname to the operation system's shared
2703 object loading function as-it.
2704 * minor incompatible change: --disable-debugger toplevel option now takes
2705 effect before processing of initialization files and --eval or --load
2707 * new feature: new commandline argument: --script, which supports
2708 shebang lines. See documentation for details. (based on work by
2710 * new feature: SAVE-LISP-AND-DIE can save current values of
2711 --dynamic-space-size and --control-stack-size in the executable core,
2712 causing it to skip normal runtime option processing. See documentation
2713 for details. (thanks to Zach Beane)
2714 * enhancement: inoccous calls to EVAL or generic functions dispatching
2715 on subclasses of eg. STREAM no longer cause compiler notes to appear.
2716 * enhancement: the system no longer resignals errors from --load and
2717 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
2718 associated with the original error to be lost. (thanks to Ariel
2720 * enhancement: :DONT-SAVE keyword argument has been added to
2721 LOAD-SHARED-OBJECT for controlling interaction with
2722 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
2723 the effects of an earlier LOAD-SHARED-OBJECT call.
2724 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
2725 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
2726 provided. (reported by Cedric St-Jean)
2727 * bug fix: circularity handling in the reader did not treat raw
2728 structure slots correctly. (reported by Cedric St-Jean)
2729 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
2730 file descriptors when there were none.
2731 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
2732 was broken. (reporteed by Willem Broekema)
2733 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
2734 pathnames without a directory.
2735 * bug fix: COMPILE-FILE did not warn about undefined variable
2736 references at toplevel, and LOAD of the resulting fasl did
2737 not signal an error.
2738 * bug fix: functions with non-required arguments used to end up with
2739 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
2740 * bug fix: redefining a function with non-required arguments didn't
2741 update the system's knowledge about its call signature properly.
2742 * bug fix: fixed #431; incompatible alien record type redefinitions
2743 are detected and handled. (reported by Neil Haven)
2744 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
2745 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
2747 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2748 after alien stack frames.
2749 * bug fix: strings passed to mk{s,d}temp lacked null termination
2751 changes in sbcl-1.0.21 relative to 1.0.20:
2752 * new feature: the compiler is able to track the effective type of a
2753 generic function across method addition and removal.
2754 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2755 appropriately typed structure slots without locking.
2756 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2757 information like those gathered by TIME using a programming-friendly
2759 * new feature: TIME reports time taken even if the form performs a
2760 non-local transfer of control.
2761 * enhancement: reduced conservativism on GENCGC platforms: on
2762 average 45% less pages pinned (measured from SBCL self build).
2763 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2764 mutate constant symbols or violate declaimed type of the symbol.
2765 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2766 sleeping on the semaphore in heavily contested semaphores.
2767 * bug fix: semaphores and condition variables were not interrupt
2769 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2770 owned by other threads anymore.
2771 * bug fix: FIND on lists called KEY outside the specified
2772 subsequence. (reported by budden)
2773 * bug fix: LOG doesn't use single-float intermediate results when
2774 given mixed integer and double-float arguments, leading to better
2775 precision. (reported by Bob Felts)
2776 * bug fix: LOG with base zero returned values of inconsistent type.
2778 changes in sbcl-1.0.20 relative to 1.0.19:
2779 * minor incompatible change: OPTIMIZE qualities
2780 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2781 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2782 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2783 * documentation: some slot access efficiency guidelines have been
2784 added to the user manual.
2785 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2786 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2787 as ASSOC and MEMEBER.
2788 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2789 to more efficient EQ-comparison versions more often.
2790 * optimization: enhanced derivation of DOLIST iteration variable type
2792 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2794 * optimization: runtime lookup of function definitions can be
2795 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2796 * optimization: compiler is able to derive the return type of
2797 (AREF (THE STRING X) Y) as being CHARACTER.
2798 * optimization: CLRHASH on empty hash-tables no longer does pointless
2799 work. (thanks to Alec Berryman)
2800 * optimization: REPLACE deftransforms don't punt when :START1 or
2802 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2803 no longer emits a code deletion note. (reported by Andrew
2805 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2806 functions with an odd number of &OPTIONAL arguments, a &REST
2807 argument, and one or more &KEY arguments at the call site.
2808 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2809 arguments appeared at call sites as well.
2810 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2811 READ-LINE &co can no longer read from them afterwards. (reported
2813 * bug fix: fixed #427: unused local aliens no longer cause compiler
2814 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2816 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2817 alien-stack leakage. (reported by Andy Hefner)
2818 * bug fix: PROGV signals an error when an attempt to violate declared
2819 type of a variable or bind a constant is made.
2820 * bug fix: SET signals an error when an attempt to violate declared
2821 type of a variable is made.
2822 * bug fix: restart computation during the execution of a restart
2823 test function no longer causes infinite recursion. (reported by
2825 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2826 signals an error. (thanks to Pierre Mai)
2827 * bug fix: EXPORT left symbol unexported in conflict situations.
2828 (thanks to Michael Weber)
2829 * bug fix: correctly handle name conflicts involving CL:NIL.
2830 (thanks to Michael Weber)
2831 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2832 conflicts arising from USEing package with conflicting symbols
2833 correctly. (thanks to Michael Weber)
2835 changes in sbcl-1.0.19 relative to 1.0.18:
2836 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2837 warnings that go otherwise unhandled will be muffled if they are
2838 of the type that's the value of this variable.
2839 * optimization: stack allocation is slightly more efficient on x86
2841 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2842 where a raw slot always is initialized using the initform whose
2843 type is not know sufficiently well a compile-time are now compiled
2844 correctly. (reported by John Morrison)
2845 * bug fix: compiler no longer makes erronous assumptions in the
2846 presence of non-foldable SATISFIES types.
2847 * bug fix: stack analysis missed cleanups of dynamic-extent
2848 arguments in non-let-converted calls to local functions.
2849 * improvements to the Windows port:
2850 ** adjusted address spaces for building on both Win32 and
2851 Win64. (thanks for John Connors)
2852 * fixed some bugs revealed by Paul Dietz' test suite:
2853 ** interval arithmetic during type derivation used inexact integer
2854 to single-float coercions.
2855 ** arithmetic operations involving large integers and single
2856 floats give the same results in compiled and interpreted code.
2857 ** deriving the result type of COERCE no longer signals an error
2858 if the derived type of the second argument is a MEMBER type
2859 containing invalid type specifiers.
2860 ** ADJOIN with constant NIL as second argument works correctly.
2861 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2863 changes in sbcl-1.0.18 relative to 1.0.17:
2864 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2865 profiles only the current thread.
2866 * minor incompatible change: changes to SYMBOL-VALUE of constants
2867 defined with DEFCONSTANT now signal an error.
2868 * enhancement: SB-SPROF now has support for wallclock profiling,
2869 and is also able to profile specific threads. REPORT output
2870 has also additional sorting options.
2871 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2873 * optimization: structure allocation has been improved
2874 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2875 ** out of line constructors are ~10% faster.
2876 ** inline constructors are ~15% faster.
2877 ** inline constructors are capable of dynamic extent allocation
2878 (generally on x86 and x86-64, in some cases on other platforms
2880 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2882 * optimization: file compiler is now able to coalesce non-circular
2883 lists, non-base strings, and bit-vectors. Additionally, constants
2884 are never referenced through SYMBOL-VALUE at runtime.
2885 * optimization: code defining methods on PRINT-OBJECT (and other
2886 generic functions in the COMMON-LISP package) now loads faster.
2887 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2889 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2890 fasl is now deleted. (reported by Attila Lendvai)
2891 * bug fix: READ-LINE always returned NIL for the last line in files.
2892 (reported by Yoshinori Tahara)
2893 * bug fix: more accurate disassembly annotations of foreign function
2894 calls. (thanks to Andy Hefner)
2895 * bug fix: trimming non-simple strings and non-string string
2896 designators when the there is nothing to trim works properly.
2897 (thanks to James Knight)
2898 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2899 (thanks to Travis Cross)
2900 * fixed some bugs revealed by Paul Dietz' test suite:
2901 ** NIL is a valid function name (regression at 1.0.13.38)
2902 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2903 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2904 fill pointers properly (regression at 1.0.12.23)
2905 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2906 displacement indices properly (regression at 1.0.12.23)
2908 changes in sbcl-1.0.17 relative to 1.0.16:
2909 * temporary regression: user code can no longer allocate closure
2910 variable storage on stack, due to bug 419 without explicitly
2911 requesting it. Please consult sbcl-devel for advice if you need to
2912 use this feature in the meanwhile.
2913 * new feature: runtime argument --control-stack-size can be used to
2914 adjust thread default control stack size.
2915 * enhancement: improved TIME output
2916 ** all times are reported using the measured accuracy (milliseconds
2917 for real and GC times, microseconds for everything else.)
2918 ** processor cycle counts on x86 and x86-64.
2919 ** interpreted forms are counted for both evaluator modes.
2920 ** number of lambdas converted by the compiler is reported.
2921 ** CPU percentage report (computed from real and total run time.)
2922 ** more comprehensive run time reporting, using a condenced format
2923 ** interperted form, lambda, and page fault counts are omitted
2925 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2927 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2928 * optimization: two argument forms of LAST are upto ~10% faster
2929 in normal SPEED policies.
2930 * optimization: NCONC no longer needs to heap cons its &REST list
2931 in normal SPEED policies.
2932 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2933 to Sidney Markowitz)
2934 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2935 regression since 1.0.9.1. (thanks to Eric Marsden)
2936 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2937 since 1.0.15.36. (thanks to Paul Khuong)
2938 * bug fix: LAST when always returned the whole list when given a bignum
2939 as the second argument.
2940 * bug fix: dynamic extent allocation of nested lists and vectors
2941 could leak to otherwise accessible parts.
2942 * bug fix: invalid optimization of heap-allocated alien variable
2944 * bug fix: fasl header checking is less vulnerable to different
2945 platform word lengths.
2946 * bug fix: more correct assembler syntax for GNU binutils
2947 2.18.50.0.4 support. (thanks to Marijn Schouten)
2948 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2950 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2951 declarations) successfully. (reported by Attila Lendvai)
2953 changes in sbcl-1.0.16 relative to 1.0.15:
2954 * minor incompatible change: revert the changes to sb-posix's error
2955 signaling added in 1.0.14.
2956 * minor incompatible change: change PROBE-FILE back to returning
2957 NIL whenever we can't get a truename, as was the case before 1.0.14.
2958 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2959 inherits from ERROR instead of just CONDITION.
2960 * new feature: SB-INTROSPECT can provide source locations for instances
2961 as well. (thanks to Tobias Rittweiler)
2962 * optimization: binding special variables now generates smaller code
2963 on threaded platforms.
2964 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2965 and cases where no :TEST is given but the compiler can infer that
2966 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2967 * optimization: better LOGNOT on fixnums.
2968 * optimization: modular arithmetic for a particular requested width
2969 is implemented using a tagged representation unless a better
2970 representation is available.
2971 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2972 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2973 for wellformedness and returns a specialized vector. (reported by
2974 Francois-Rene Rideau)
2975 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2976 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2977 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2978 unscheduling timer at the same time as another timer fires.
2979 * bug fix: don't reschedule timers for dead threads.
2980 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2981 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2982 bogus errors if select() was interrupted.
2983 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2985 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2986 * enhancement: cleaner backtraces for interactive interrupts, as
2987 well as other cases where the interesting frames used to be
2988 obscured by interrupt handling frames.
2989 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2990 now supported, and tracing a whole package using (TRACE "FOO") now
2991 traces SETF-functions as well.
2992 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2993 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2994 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2995 * unreadably printed representation of hash-tables now includes
2997 * bug fix: partially fixed #188: type propagation from assignments
2998 is now more efficient.
2999 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
3000 'DOUBLE-FLOAT) are not flushable.
3001 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
3002 full address of the object, and none of the tag bits.
3003 * bug fix: readably printing hash-tables now respects other printer
3004 control variables. (reported by Cedric St-Jean)
3005 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
3006 keyword with MAKE-HASH-TABLE.
3007 * bug fix: export SB-POSIX:MKSTEMP.
3008 * bug fix: SORT was not interrupt safe.
3009 * bug fix: XREF accounts for the last node of each basic-block as
3011 * bug fix: MAKE-INSTANCE optimizations interacted badly with
3012 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
3013 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
3014 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
3015 create obsolete instances in the case of redefinition or
3016 obsoletion of a superclass. (thanks to Andy Hefner)
3017 * bug fix: Support for the Alpha architecture has been revived; it had
3018 suffered somewhat from lack of maintenance since sbcl-1.0.
3019 * improvements to the Windows port:
3020 ** The system detects the codepage to use at startup, instead of
3021 using the value from the saved core. (thanks to Kei Suzuki)
3023 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
3024 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
3025 (see documentation for details.)
3026 * revived support for OpenBSD (contributed by Josh Elsasser)
3027 * partially fixed bug #108: ROOM no longer suffers from occasional
3028 (AVER (SAP= CURRENT END)) failures.
3029 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
3030 bodies no longer cause a WARNING to be signalled. (reported by
3032 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
3033 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
3034 the bug in TRUNCATE.) (reported by Michael Weber)
3035 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
3036 no samples. (reported by Andy Hefner)
3037 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
3038 no longer appear as (NIL ...) frames in backtraces.
3039 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
3040 is now actually exported from SB-EXT as documented. (reported by
3042 * bug fix: sb-aclrepl now correctly understands how to inspect
3043 single-floats on 64-bit platforms where single-floats are not boxed.
3044 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
3045 yet been finalized. (reported by Levente Meszaros)
3046 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
3047 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
3048 SBCL-specific optimize qualities.
3050 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
3051 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
3052 an executable in the search path, and does so in the child
3053 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
3054 been removed; it can be found in the CVS history, for somebody who
3055 needs that search behavior (see the manual).
3056 * minor incompatible change: compiler policy re. weakening type
3057 checks has changed: now type checks are weakened only if SAFETY < 2
3059 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
3060 unparsing of directory pathnames as files. Analogously,
3061 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
3062 filename to parse into a directory pathname.
3063 * enhancement: implicit generic function creation now signals a
3064 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
3065 users can bind handlers for and muffle around calls to LOAD.
3066 * enhancement: RUN-PROGRAM allows unicode arguments and environments
3067 to be used (using the default stream external format), and allows
3068 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
3069 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
3070 strings and vectors whose element-type or simplicity is not fully
3071 known at compile-time.
3072 * optimization: STRING-TRIM and related functions no longer allocate
3073 a new string when no trimming needs to be performed. These functions
3074 are also faster than before when the input string has been declared
3076 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
3077 * optimization: READ-LINE is significantly faster for files containing
3079 * optimization: non-open coded uses of character comparison operators
3080 (e.g. char=) no longer cons when called with more than one parameter
3081 on platforms supporting dynamic-extent allocation.
3082 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
3083 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
3084 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
3086 * bug fix: some sequence functions elided bounds checking when
3088 * bug fix: too liberal weakening of union-type checks when SPEED >
3090 * bug fix: more bogus fixnum declarations in ROOM implementation
3093 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
3094 * new feature: MAKE-HASH-TABLE now experimentally accepts a
3095 :SYNCHRONIZED argument, which makes the hash-table safe for
3096 concurrent accesses (but not iteration.) See also:
3097 SB-EXT:WITH-LOCKED-HASH-TABLE, and
3098 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
3099 * optimization: CONCATENATE on strings is an order of magnitude faster
3100 in code compiled with (> SPEED SPACE).
3101 * optimization: SUBSEQ is ~50% faster on lists.
3102 * bug fix: bug 417 fixed -- source location reporting is now more robust.
3103 * bug fix: SUBSEQ on a list will now correctly signal an error if if
3104 END is smaller then START.
3105 * bug fix: SB-PROFILE will no longer report extra consing for nested
3106 calls to profiled functions.
3107 * bug fix: ROOM implementation had bogus fixnum declarations which
3108 could cause type-errors when calling ROOM on large images.
3109 * bug fix: if file compilation is aborted, the partial fasl is now
3110 deleted, and COMPILE-FILE returns NIL as the primary value.
3111 * bug fix: number of thread safety issues relating to SBCL's internal
3112 hash-table usage have been fixed.
3113 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
3114 be returned from its body when the values were being returned
3115 using unknown-values return convection and the W-P-O was wrapped
3116 inside an UNWIND-PROTECT.
3117 * bug fix: sb-posix should now compile again under Windows, enabling
3118 slime to work again.
3120 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
3121 * incompatible change: hash-table accessor functions are no longer
3122 automatically protected by locks. Concurrent accesses on the same hash-table
3123 from multiple threads can give inconsistent results or even corrupt the
3124 hash-table completely. Multi-threaded applications should do their own
3125 locking at the correct granularity. In the current implementation it is
3126 still safe to have multiple readers access the same table, but it's not
3127 guaranteed that this property will be maintained in future releases.
3128 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
3129 and will signal an error at runtime.
3130 * enhancement: SB-THREAD package now exports a semaphore interface.
3131 * enhancement: CONS can now stack-allocate on x86 and
3132 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
3134 * enhancement: nested lists can now be stack allocated on
3135 platforms providing stack allocation support.
3136 * enhancement: dynamic-extent support has been extended to support
3137 cases where there are multiple possible sources for the stack
3139 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
3140 if the mutex is uncontested on Linux.
3141 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
3142 as specified by the CLHS. (thanks to Tobias Rittweiler)
3143 * bug fix: NaN comparison now works on x86-64.
3144 * bug fix: CLOSE :ABORT T on a stream with pending output now
3146 * bug fix: instances of non-standard metaclasses using standard
3147 instance structure protocol sometimes missed the slot type checks
3149 * bug fix: known functions can be inlined in high-debug code.
3151 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
3152 * minor incompatible change: the MSI installer on Windows no longer
3153 associates .lisp and .fasl files with the installed SBCL.
3154 * minor incompatible change: :UNIX is no longer present in *FEATURES*
3155 on Windows. (thanks to Luis Oliviera)
3156 * new feature: SB-CLTL2 contrib module now implements
3157 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
3158 * optimization: scavenging weak pointers is now more efficient,
3159 requiring O(1) instead of O(N) per weak pointer to identify
3160 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
3161 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
3162 method bodies using constant slot-names when the first argument is
3163 a specializer parameter for the method.
3164 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
3165 names, when the class of the instance is a direct instance
3166 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
3167 as slow as the constant slot-name case.)
3168 * optimization: member type construction is now O(N) instead
3170 * optimization: UNION and NUNION are now O(N+M) for large
3171 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
3173 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
3174 now more readable in environments like Slime which display it.
3175 (thanks to Tobias C. Rittweiler)
3176 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
3177 was able to infer the correct argument type for the object on which
3178 the CAS operation was being performed.
3179 * bug fix: copy propagation interfered with parallel assignment
3180 semantics in local calls. (reported by Paul Khuong)
3181 * bug fix: the signed modular fixnum shift compiled to wrong code on
3182 x86 and x86-64. (spotted by a slight modification to some of
3185 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
3186 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
3187 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
3188 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
3190 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
3191 and generic function now print the object identity for anonymous
3192 instances. (thanks to Attila Lendvai)
3193 * enhancement: as an extension to MOP, SBCL now supports SETF of
3194 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
3195 (thanks to Attila Lendvai)
3196 * enhancement: sb-cover has an alternate annotation mode which puts
3197 the form annotations at the car of the form, instead of annotating
3198 it completely. The benefit of this mode is that it shows better
3199 which forms were instrumented by the compiler.
3200 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
3201 by printer control variables. (reported by Dan Corkill)
3202 * bug fix: system leaked memory when delayed output was performed by
3203 the OS in smaller chunks then expected. (thanks to David Smith)
3204 * bug fix: system leaked memory when file streams were not closed
3206 * bug fix: large objects written to slow streams that were modified
3207 after the write could end up with the modified state written to
3208 the underlying file descriptor.
3209 * bug fix: multiple threads operating in parallel on the same stream
3210 could cause buffer-overflows.
3211 * bug fix: source location information is stored correctly
3212 (broken since 1.0.6). This bug would generally show up as the
3213 Slime debugger highlighting the wrong form when the sldb-show-source
3215 * bug fix: Branch forms are again annotated as branches in the sb-cover
3217 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
3218 on x86-64. (reported by Gregory Vanuxem)
3219 * bug fix: EQUALP could return wrong results for structures with raw
3220 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
3221 word). (reported by Vjacheslav Fyodorov)
3222 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
3225 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
3226 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
3227 atomic compare-and-swap operations on threaded platforms.
3228 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
3229 allows assigning a global minimum value to optimization qualities
3230 (overriding proclamations and declarations).
3231 * enhancement: closed over variables can be stack-allocated on x86
3233 * performance bug fix: GETHASH and (SETF GETHASH) are once again
3235 * optimization: slot definition lookup is now O(1). This speeds up
3236 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
3237 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
3238 * optimization: ASSOC and MEMBER can now be open-coded for all
3239 combinations of keyword arguments when second argument is constant
3240 and SPEED >= SPACE. In other cases a specialized version is
3242 * bug fix: using obsoleted structure instances with TYPEP and
3243 generic functions now signals a sensible error.
3244 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
3245 (reported by Kristoffer Kvello)
3246 * bug fix: backtrace construction is now more careful when making
3247 lisp-objects from pointers on the stack, to avoid creating bogus
3248 objects that can be seen by the GC.
3249 * bug fix: defaulting of values in contexts expecting more than 7
3250 variables now works on x86-64. (reported by Christopher Laux)
3251 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
3253 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
3254 as the property-list of a symbol.
3255 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
3256 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
3257 situations requested, are once again file-compileable. (reported
3260 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
3261 * MOP improvement: support for user-defined subclasses of
3262 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
3263 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
3264 the expansion of DEFMETHOD, is responsible for generating a form
3265 which creates a list of specializers when evaluated. Additional
3266 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
3267 debugging and introspective support.
3268 * minor incompatible change: the (unsupported) spinlock interface
3269 has changed: free spinlock now has the value NIL, and a held spinlock
3270 has the owning thread as its value.
3271 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
3272 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
3274 * enhancement: name of a socket-stream is now "a socket" instead of
3275 "a constant string".
3276 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
3277 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
3278 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
3279 for generic functions. (Thanks to Tobias C. Rittweiler)
3280 * optimization: bignum printing speed has been improved by 20-40%
3281 (depending on the bignum size.)
3282 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
3284 * bug fix: the cache used by the CLOS to store precomputed effective
3285 methods, slot offsets, and constant return values is now thread and
3287 * bug fix: generic function dispatch function updating is now thread
3288 and interrupt safe (in the sense that the known issues have been
3290 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
3291 * bug fix: interning EQL-specializers is now thread and interrupt safe.
3292 * bug fix: asdf systems with dependencies to the SB-POSIX or
3293 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
3294 * bug fix: interrupt safety of applicable method computation has been
3297 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
3298 * new contrib: sb-cover, an experimental code coverage tool, is included
3299 as a contrib module.
3300 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
3301 significantly faster.
3302 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3303 produce more efficient code on x86-64 if the compiler can determine
3304 that (+ INDEX <constant>) does not require a bounds check and FOO
3305 has an element type at least 8 bits wide.
3306 * enhancement: a new, experimental synchronous timeout facility is
3307 provided. Refer to SB-SYS:WITH-DEADLINE for details.
3308 * enhancement: when a symbol name conflict error arises, the
3309 conflicting symbols are always printed with a package prefix.
3310 (thanks to Kevin Reid)
3311 * enhancement: stepping is now once again supported on the SPARC and
3312 MIPS platforms. (It is also now more likely to work on CheneyGC
3314 * enhancement: sb-sprof can now also track and report accurate call
3316 * bug fixes: the treatment of non-standard subclasses of
3317 SB-MOP:SPECIALIZER is more correct.
3318 * incompatible change: PURIFY no longer copies the data from the
3319 dynamic space into the static and read-only spaces on platforms
3320 that use the generational garbage collector
3321 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
3323 * bug fix: GC race condition occasionally resulting in crashes with
3324 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
3326 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
3328 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
3329 a STYLE-WARNING to be signalled (regression from 1.0.4.)
3330 * bug fix: an asynchronous interrupt could previously leave the
3331 system running with GC inhibited.
3332 * bug fix: a DECLARE form evaluated at top-level now causes an error
3333 rather than silently (or verbosely) returning NIL.
3334 * bug fix: trying to dissassemble functions compiled at high DEBUG could
3335 result in a error being signalled due to source form lookup errors.
3336 (reported by Peter Graves)
3338 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
3339 * incompatible change: removed writer methods for host-ent-name,
3340 host-ent-addresses -- changing the values did not update the DNS
3342 * minor incompatible change: changed experimental JOIN-THREAD interface
3343 * documentation: the manual now lists reader and writer methods
3344 in class slot documentation sections. (thanks to Richard M Kreuter)
3345 * documentation: unwinding from asyncronous events has been
3346 documented as unsafe.
3347 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
3348 in multithreaded application code.
3349 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
3350 platforms. (thanks to James Anderson for the optimization hint)
3351 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
3353 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
3354 variants no longer cons.
3355 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
3356 their NOT- variants no longer cons.
3357 * optimization: EQUAL hash tables no longer use SXHASH for objects
3358 of all data types, but instead use an EQL hash for types for which
3359 EQUAL is the same as EQL.
3360 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
3361 are significantly faster.
3362 * optimization: new STRING-OUTPUT-STREAM implementation is much
3363 faster for large outputs and conses 30% less on average.
3364 * enhancement: XREF information is now collected for references made
3365 to global variables using SYMBOL-VALUE and a constant argument.
3366 * enhancement: SIGINT now causes a specific condition
3367 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
3368 * bug fix: FILE-POSITION used to signal an error in some cases where
3369 ANSI requires it to return NIL.
3370 * bug fix: ADJUST-ARRAY is now interrupt-safe.
3371 * bug fix: adding and removing fd-handlers is now interrupt-safe.
3372 * bug fix: inlined calls to C now ensure 16byte stack alignment on
3374 * bug fix: bad type declaration in the CLOS implementation has
3375 been fixed. (reported by James Anderson)
3376 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
3377 (thanks to Lutz Euler)
3378 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
3379 required by the CLHS. (reported by Samium Gromoff)
3380 * bug fix: dead unbound variable references now signal an error.
3381 (reported by Marco Monteiro)
3382 * bug fix: / with an unused value was being deleted in safe code.
3383 (thanks to Marco Monteiro and Kevin Reid)
3384 * bug fix: number of characters that can be written onto a single
3385 line in a file is unlimited.
3386 * bug fix: some GC deadlocks caused by asynchronous interrupts have
3387 been fixed by inhibiting interrupts for when GC is disabled.
3388 * bug fix: some interrupt safety issues with GETHASH, (SETF
3389 GETHASH), CLRHASH and REMHASH have been fixed.
3390 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
3391 specifier no longer causes infinite recursion.
3392 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
3393 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
3394 * bug fix: an &environment argument with the correct variable information
3395 is passed to macros that are expanded during byte compilation.
3396 (reported by Samium Gromoff)
3397 * bug fix: a logic error was causing the hash function for bignums to
3398 have excessive amounts of collisions. (reported by Faré Rideau)
3399 * bug fix: modifying the contents of an array could change the return
3400 value of SXHASH on that array, which is only allowed for strings
3401 and bit vectors. (bug introduced in 0.9.16)
3402 * improvement: the x86-64/darwin port now passes all tests (except
3403 for the debugger tests) but should still be considered
3404 experimental until this is fixed.
3405 * improvement: a style-warning is signaled for CASE (etc) clauses with
3406 duplicate keys. (thanks to Kevin Reid)
3407 * improvement: macos/x86 and macos/x86-64 now use mach exception
3408 handlers for dealing with illegal instructions (for trapping and
3409 error handling) and memory protection violations (for GC).
3411 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
3412 * new platform: experimental support for x86-64/darwin (MacOS).
3413 * incompatible change: the thread-safe (on most platforms) getaddrinfo
3414 and getnameinfo sockets functions are used instead of gethostbyaddr
3415 and gethostbyname, on platforms where the newer functions are available.
3416 As a result, the ALIASES field of HOST-ENT will always be NIL on these
3418 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
3419 don't print the startup banner, but behave as if --noinform was passed
3420 as a command line argument. (thanks to Kevin Reid)
3421 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
3422 * optimization: code using alien values with undeclared types is much faster.
3423 * optimization: the compiler is now able to open code SEARCH in more cases.
3424 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
3425 * bug fix: using standardized COMMON-LISP special variables as loop
3426 variables no longer signals bogus package lock violations. (reported
3428 * bug fix: declaring local loop variables to be of a range-limited type
3429 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
3430 (reported by Andras Simon)
3431 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
3432 bugs remain on x86-64.)
3433 * bug fix: the #= and ## reader macros now interact reasonably with
3434 funcallable instances.
3435 * bug fix: type-checks for function arguments were compiled using the
3436 compiler policy settings of the wrong lexical environment (in 1.0.2
3438 * bug fix: SHADOW accepts characters as string designators, as required
3439 by the spec (thanks to Eric Marsden)
3440 * bug fix: fixed GC safety issues when foreign functions are called with
3441 non-base strings as arguments
3442 * bug fix: more consistent error output for fatal-compiler-warnings, like
3444 * bug fix: functions with proper names were showing up as NIL in
3445 backtraces (reported by Edi Weitz, regression in 1.0.2)
3447 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
3448 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
3449 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3450 produce more efficient code on the x86 if the compiler can determine
3451 that (+ INDEX <constant>) does not require a bounds check and FOO
3452 has an element type at least 8 bits wide.
3453 * bug fix: references to undefined variables are handled the same way
3454 in toplevel forms as in the normal compiler
3455 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
3457 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
3458 (thanks to Jon Buller)
3459 * improvement: faster compilation times for complex functions
3460 * improvement: added readlink support to SB-POSIX (thanks to Richard
3463 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
3464 * improvement: experimental support for mach exception handling on
3465 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
3467 * improvement: support for GBK external format.
3468 (thanks to Chun Tian (binghe))
3469 * improvement: the debugger now displays variables that have been closed
3470 over, in code compiled with (DEBUG 2) or higher
3471 * improvement: support for executable cores on NetBSD (thanks to
3473 * new feature: added a RESTART-FRAME debugger command
3474 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
3475 be used to provide an implementation for FILE-POSITION on Gray streams
3476 (thanks to Eric Marsden)
3477 * new feature: add syslog, openlog and closelog support to SB-POSIX
3478 (thanks to Richard Kreuter)
3479 * optimization: the function call overhead in code compiled with
3480 a high DEBUG optimization setting is significantly
3481 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
3482 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
3483 (thanks to Tony Martinez)
3484 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
3485 evaluated once (reported by Kevin Reid)
3486 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
3487 works again (thanks to Kilian Sprotte)
3488 * bug fix: an error is signaled for tagbodies with duplicate tags
3489 (thanks to Stephen Wilson)
3490 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
3491 * bug fix: Win32 port can now handle foreign code unwinding Lisp
3492 stack frames from alien callbacks.
3493 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
3494 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
3495 65k pages (thanks to David Woodhouse)
3496 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
3498 changes in sbcl-1.0.1 relative to sbcl-1.0:
3499 * new platform: FreeBSD/x86-64, including support for threading.
3500 * new feature: the compiler stores cross-referencing information
3501 about function calls (who-calls), macroexpansion (who-macroexpands)
3502 and special variables (who-binds, who-sets, who-references) for code
3503 compiled with (< SPACE 3). This information is available through the
3504 sb-introspect contrib.
3505 * new feature: users may subclass SEQUENCE, and have instances of
3506 these classes interoperate with standard Common Lisp functions if
3507 a number of methods are defined. (This feature is experimental
3508 and the interface subject to change based on feedback from SBCL
3509 users and the general community)
3510 * improvement: sb-sprof traces call stacks to an arbitrary depth on
3511 x86/x86-64, rather than the previous fixed depth of 8
3512 * improvement: another pthread back-end of mutex "pthread-futex".
3513 * bug fix: non-ascii command-line arguments are processed correctly
3514 (thanks to Yaroslav Kavenchuk)
3515 * bug fix: non-required arguments were not passed correctly when a method
3516 defined using DEFMETHOD was called from a mop-generated method using
3517 CALL-NEXT-METHOD (reported by Pascal Costanza)
3518 * bug fix: recursion is now permitted in accessors through
3519 SLOT-UNBOUND. (reported by Pascal Costanza)
3520 * bug fix: an error was signaled at startup if the HOME environment
3521 variable was defined, but had an empty value (reported by Peter Van Eynde)
3522 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
3523 signal a PROGRAM-ERROR, not a BUG.
3524 * bug fix: SB-POSIX:READDIR works when built with large file support.
3525 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
3527 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
3528 for better automatic indentation support. (thanks to Matt Pillsbury)
3529 * optimization: loading generic functions no longer takes O(n^2) time,
3530 proportional to the amount of methods in the generic function
3531 (reported by Todd Sabin and Jeremy Brown)
3532 * optimization: the FIND and POSITION family of sequence functions
3533 are significantly faster on arrays whose element types have been
3535 * improvements to the Windows port:
3536 ** Intermittent heap corruption problems have been fixed. (thanks
3537 to Alastair Bridgewater)
3538 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
3540 ** Lisp is able to unwind foreign exception frames from alien
3541 callbacks. (thanks to Alastair Bridgewater)
3543 changes in sbcl-1.0 relative to sbcl-0.9.18:
3544 * improvement: experimental support for threading on FreeBSD/x86.
3545 (thanks to NIIMI Satoshi)
3546 * improvement: runtime option --dynamic-space-size can be used
3547 to set the size of the dynamic space reserved on startup.
3548 * improvement: floating point modes in effect are now saved in
3549 core, and restored on startup.
3550 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
3551 startup, not time since first call to GET-INTERNAL-REAL-TIME.
3552 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
3553 threads are not running after *SAVE-HOOKS* have run.
3554 * improvement: writes to CLOS instance slots are type-checked in code
3555 compiled with (SAFETY 3)
3556 * improvement: floating-point exception handling on FreeBSD (thanks to
3558 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
3559 (thanks to Zach Beane)
3560 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
3562 * improvement: added support for the Shift-JIS external format.
3563 (contributed by NIIMI Satoshi)
3564 * improvement: callbacks are supported on Linux/PPC. (thanks to
3566 * bug fix: compiler bug triggered by a (non-standard) VALUES
3567 declaration in a LET* was fixed. (reported by Kaersten Poeck)
3568 * bug fix: file compiler no longer confuses validated and already
3569 dumped structurres. (reported by Kaersten Poeck)
3570 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
3571 fill-pointer signals a type-error as required. (thanks to
3573 * bug fix: disassemly of funcallable instances works.
3574 * bug fix: single stepping on PPC.
3575 * bug fix: fix thread-safety problems in the type system (generally
3576 manifesting as nonsensical errors like "STRING is a bad type specifier
3577 for sequences" or "The value 1 is not of type FIXNUM")
3578 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
3579 (reported by Josip Gracin)
3580 * bug fix: an error is signaled for attempts to displace arrays with
3581 incompatible element types (thanks to Mario Mommer)
3582 * bug fix: more correct handling of wide characters in debug info
3583 (bug reported by Attila Lendvai and fixed by Juho Snellman)
3584 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
3585 and don't cause extra consing
3586 * optimization: MAP and MAP-INTO are significantly faster on vectors
3587 whose elements types have been declared.
3588 * Improvements to SB-SPROF:
3589 ** Support for allocation profiling
3590 ** Reduced profiling overhead, especially for long profiling runs
3591 * Improvements to the Windows port:
3592 ** floating point exceptions are now reported correctly.
3593 ** stack exhaustion detection works partially.
3594 ** more accurate GET-INTERNAL-REAL-TIME.
3595 ** better RUN-PROGRAM behaviour in case of errors in the child
3597 ** PROBE-FILE now simplifies pathnames correctly.
3598 ** DIRECTORY now works correctly with :WILD-INFERIORS.
3599 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
3600 1st 1970 (although time timezone data will be unreliable).
3601 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
3603 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
3604 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
3605 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
3607 * bug fix: two potential GC deadlocks affecting threaded builds.
3608 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
3609 returns T (reported by Anton Kazennikov)
3610 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
3611 with non-variable places
3612 * bug fix: remove a race condition in the setting of
3613 funcallable-instance functions, this should make threaded CLOS
3614 code more stable against memory faults.
3615 * bug fix: corruption of specials when unbinding is interrupted by an
3616 asynchronous unwind (reported by Hannu Koivisto)
3617 * improvement: the debugger will now also display local variables that
3618 are only used once, for code compiled with a DEBUG optimization quality
3621 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
3622 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
3623 * incompatible change: External-format support for FFI calls. The
3624 SB-ALIEN:C-STRING no longer implies an ASCII
3625 external-format. Instead the string is subject to external-format
3626 conversion. Additionally return values of type SB-ALIEN:C-STRING
3627 are by default of type (SIMPLE-ARRAY CHARACTER), not
3628 SIMPLE-BASE-STRING. For an alien type that behaves like the old
3629 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
3630 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
3631 * incompatible change: SB-EXT package no longer contains the
3632 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
3633 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
3635 * incompatible change: the single-stepper is no longer available
3636 on Alpha, Mips and Sparc platforms.
3637 * minor incompatible change: the direct superclasses of
3638 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
3639 not (STANDARD-OBJECT FUNCTION). This makes the
3640 class-precedence-lists of GENERIC-FUNCTION and
3641 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
3643 * minor incompatible change: the default stream external format on
3644 non-unicode SBCL is no longer detected from the locale, but is always
3646 * new feature: Add a version of evaluator that uses an interpreter instead
3647 of the compiler. EVAL still uses the compiler by default, to switch it
3648 to use the interpreter, set the value of the variable
3649 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
3650 * minor incompatible change: the single-stepper REPL has been merged
3651 with the normal debugger (see the "Stepping" heading of the debugger help
3652 for more details). The debugger command STEP will no longer switch
3653 to the single-stepper REPL.
3654 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
3655 for a type now works.
3656 * bug fix: loading of default sysinit file works. (thanks to Leonid
3658 * bug fix: better detection of circularities in the file-compiler.
3659 (reported by Marco Monteiro)
3660 * bug fix: the CL pathname functions now work with files that have
3661 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
3662 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
3663 systems with Unix98 pty semantics.
3664 * bug fix: ASDF-INSTALL will now work with bsd tar.
3665 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
3667 * bug fix: timers expiring in dead threads no longer cause a
3668 type-error (reported by Paul "Nonny Mouse").
3669 * bug fix: thanks to more lightweight single-stepper instrumentation,
3670 code compiled with (DEBUG 3) will compile and execute significantly faster,
3671 and will have more accurate type-inferencing than before
3672 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
3673 whose bindings are modified
3674 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
3675 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
3676 ** replace dummy implementations of CL:MACHINE-INSTANCE and
3677 CL:SOFTWARE-VERSION with proper version
3679 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
3680 * feature: implemented the READER-METHOD-CLASS and
3681 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
3682 as specified by AMOP.
3683 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
3685 * optimization: faster LOGCOUNT implementation on x86 and x86-64
3686 (thanks to Lutz Euler)
3687 * optimization: hashing of general arrays and vectors has been
3688 improved. (reported by Any Fingerhut)
3689 * enhancement: SB-INTROSPECT is now able to find definitions of
3690 profiled functions. (thanks to Troels Henriksen)
3691 * enhancement: compiler-macro expansion applies now to FUNCALL forms
3692 as well, allowing compiler-macros for SETF-functions to expand.
3693 * enhancement: step-instrumentation no longer wraps known
3694 single-value functions with multiple-value context, allowing
3695 better type inference.
3696 * fixed bug #337: use of MAKE-METHOD in method combination now works
3697 even in the presence of user-defined method classes. (reported by
3698 Bruno Haible and Pascal Costanza)
3699 * fixed bug #339(c): if there are applicable methods not part of any
3700 long-form method-combination group, call INVALID-METHOD-ERROR.
3701 (reported by Bruno Haible)
3702 * fixed bug #361: the :FUNCTION initarg in the protocol for
3703 initialization of methods can now be used to override
3704 internally-produced optimized functions. (reported by Bruno
3706 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
3707 system-provided lambda expression no longer cause warnings about
3708 unbound #:|pv-table| symbols.
3709 * bug fix: improved the handling of type declarations and the
3710 detection of violations for keyword arguments with non-constant
3712 * bug fix: potentially erronous calls to PATHNAME and
3713 MERGE-PATHNAMES were being flushed in some cases.
3714 (reported by Richard Kreuter)
3715 * bug fix: compiled calls to TYPEP were mishandling obsolete
3716 instances. (reported by James Bielman and Attila Lendvai)
3717 * bug fix: format strings with ~> without matching ~< no longer
3718 trigger an AVER, but signal an understandable error instead.
3719 (reported by Antonio Martinez)
3720 * bug fix: specifying an output-file without a pathname-type for
3721 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
3722 of input-file instead of "fasl". (reported by Robert Dodier)
3723 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
3724 (reported by James Y Knight).
3725 * bug fix: compiler-macros-function did not consider the environment
3726 argument for shadowing by local functions.
3727 * bug fix: compiler-macros expansion was inhibited by local INLINE
3729 * bug fix: inline expansions of known functions were subject to
3730 step-instrumentation in high debug policies, leading to problems
3731 with type-inference.
3732 * bug fix: compiler failed to differentiate between different CONS
3733 types in some cases.
3734 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
3735 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
3736 * bug fix: #368: incorrect use of expressed vs. upgraded array
3738 * bug fix: #306a: more precise unions of array types.
3739 * thread-safety improvements:
3740 ** CONDITION-WAIT could return early on Linux, if the thread was
3741 interrupted and subsequently continued with SIGCONT.
3742 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
3744 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
3745 * added support for the ucs-2 external format. (contributed by Ivan
3747 * minor incompatible change: pretty printing of objects of type
3748 (cons symbol) is, in the default pprint-dispatch-table, now
3749 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3751 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3752 called later in a class's lifetime, possibly as late as when the
3753 first instance of the class is created. Previously,
3754 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3755 class became finalizeable.
3756 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3757 for multibyte external-format streams. (thanks to "vbzoli")
3758 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3759 with :ALLOCATION :CLASS inherited from superclasses of the
3761 * fixed bug: anonymous classes can now be created using the :NAME
3762 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3763 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3764 * fixed bug: core-files saved with :EXECUTABLE T can again be
3765 executed when SBCL_HOME isn't set. (reported by James Knight)
3766 * fixed bug: toplevel LOCALLY forms with declarations could
3767 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3768 * fixed bug: printing from several different threads using different
3769 values of *print-case* could cause invalid output, due to
3770 some internal special variables of the printer not being bound
3771 thread-locally (reported by Max Mikhanosha)
3772 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3773 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3774 (reported by Pascal Costanza)
3775 * fixed bug: FINALIZE-INHERITANCE is called from
3776 REINITIALIZE-INSTANCE on classes when the class has previously
3777 been finalized, as required by AMOP.
3778 * minor code generation optimizations:
3779 ** better register allocation in CLOS dispatching functions
3780 ** overflow detection when coercing signed bytes to fixnums on x86-64
3781 ** is now implemented with one IMUL instruction instead of three shifts
3782 ** more efficient bit-vector access on x86 and x86-64
3783 ** more efficient access to raw structure slots on x86 and x86-64
3784 * fixed some bugs revealed by Paul Dietz' test suite:
3785 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3786 return its argument.
3788 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3789 * feature: thread support on Solaris/x86, and experimental thread support
3791 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3793 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3794 default method for SLOT-UNBOUND.
3795 * minor incompatible change: prevent the user from specializing the
3796 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3797 somewhat counter to the intent of the protocol, I (CSR) think, and
3798 additionally it just doesn't work in SBCL as currently
3799 implemented, thanks to optimizations (that are always valid for
3800 the other three SLOT-VALUEish functions, but not for the setter).
3801 * minor incompatible change: the :SB-LDB feature is now enabled by
3802 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3803 the low-level debugger.
3804 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3805 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3806 down to an SB-SYS:FD-STREAM, allowing direct communication in
3807 more cases. Temporary files and pipes are still used as a fallback
3809 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3810 on the non-reentrant C functions localtime(3) and gmtime(3).
3811 * bug fix: global optimization policy was not visible in LOCALLY and
3813 * bug fix: class objects can be used as specializers in methods.
3814 (reported by Pascal Costanza)
3815 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3816 with a type error. (reported by blitz_ on #lisp)
3817 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3818 failed with a type error. (reported by Pascal Bourguignon)
3819 * bug fix: merging pathnames against defaults with :DIRECTORY
3820 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3821 (reported by James Y Knight)
3822 * bug fix: saving large (>2GB) cores on x86-64 now works
3823 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3824 constant index and a (simple-array (signed-byte 32)) array
3825 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3826 error (patch by Robert J. Macomber)
3827 * feature: TIME now displays the amount of run-time spent in GC
3828 * bug fix: The debugger now does a better job of respecting
3829 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3830 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3831 workaround for bug 403.)
3832 * bug fix: floating point exception handling now works on FreeBSD
3833 (thanks to NIIMI Satoshi)
3834 * fixed some bugs revealed by Paul Dietz' test suite:
3835 ** MISC.641: LET-conversion were not supposed to work in late
3837 * improvements to the Win32/x86 port:
3838 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3839 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3841 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3842 * new feature: source path information is generated for macro-expansion
3843 errors for use in IDE's like Slime (thanks to Helmut Eller)
3844 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3845 * bug fix: compiler does not loop forever on an invalid type in
3847 * improvement: compilation of most CLOS applications is significantly
3849 * optimization: added a limited bytecode compiler for simple toplevel
3850 forms, speeding up compilation and FASL loading
3851 * bug fix: the statistical profiler now properly distinguishes anonymous
3854 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3855 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3856 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3857 into subclasses of the finalized class. Now user calls to
3858 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3859 system return before any subclasses are finalized.
3860 * minor incompatible change: The reader no longer ignores errors
3861 regarding non-existent packages in #+ and #- feature tests.
3862 * new feature: command line options --no-sysinit, --no-userinit to
3863 inhibit loading the corresponding init files
3864 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3865 for sending data through UDP sockets (thanks to François-René Rideau)
3866 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3867 error is signalled instead (thanks to François-René Rideau)
3868 * minor incompatible change: Error signalling behaviour of lexical
3869 operations violating package locks has changed slightly. Refer to
3870 documentation on package locks for details.
3871 * enhancement: EVAL can process IF-expressions without resorting to the
3873 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3874 constant-folded properly due to missing out-of-line functions.
3875 (reported by Mika Pihlajamäki)
3876 * bug fix: LISTEN sometimes returned T even in cases where no data was
3877 immediately available from the stream
3878 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3879 were reversed. (reported by Levente Mészáros)
3880 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3881 when given a vector displaced to an adjustable array. (reported
3883 * bug fix: derivation of float boundaries from numbers outside the
3884 appropriate float range (reported by John Wiseman)
3885 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3887 * bug fix: precomputing cache entries for generic functions with
3888 some subclasses of specializers as yet invalid does not attempt to
3889 fill a cache line with a negative offset. (reported by Levente
3891 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3892 allow condition class objects as arguments to DOCUMENTATION and
3893 (SETF DOCUMENTATION); only find and set documentation for
3894 structure names for the STRUCTURE doc-type. (suggested by Gary
3896 * improvements to the Win32/x86 port:
3897 ** (user-homedir-pathname) and default initialization file
3898 locations now know about the user's "Documents and Settings"
3899 directory (thanks to Yaroslav Kavenchuk)
3900 ** run-program is implemented (thanks to Mike Thomas)
3901 ** sockets support (thanks to Timothy Ritchey)
3902 ** better backtrace support (thanks to Alastair Bridgewater)
3903 ** sb-grovel supported
3904 ** asdf-install and sb-posix work somewhat
3905 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3906 * improvements to the Solaris/x86 port:
3907 ** works on Solaris 11/Solaris Express
3908 ** floating-point exception handling support
3909 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3910 * fixed some bugs revealed by Paul Dietz' test suite:
3911 ** REMOVE-METHOD returns its generic function argument even when
3912 the method is not one of the generic functions' methods.
3913 ** objects declared as MEMBER types can be admissible arguments to
3914 structure accessors.
3915 ** printing characters should simply be printed by the FORMAT ~:C
3917 ** compiler failure when compiling functions with hairy constant
3918 defaults for optional parameters.
3919 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3920 function, which is already optimized.
3922 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3923 * new platform: experimental support for SBCL x86/Darwin, including
3924 MacOS X 10.4.5 on Intel.
3925 * new feature: Unicode character names are now known to the system
3926 (through CHAR-NAME and NAME-CHAR).
3927 * new feature: the filesystem location of SBCL's core file is
3928 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3929 * minor incompatible change: the contrib modules SB-POSIX and
3930 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3931 this change is to make it easier to distribute
3932 location-independent binaries.
3933 * bug fix: as implied by AMOP, standardized classes no longer have
3934 slots named by external symbols of public packages. (reported by
3936 * optimization: calling functions via constant symbols -- as in
3937 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3938 via the function object as in (FUNCALL #'FOO).
3939 * optimization: on x86 and x86-64, the calling convention for the
3940 case of dealing with an unknown number of values has been altered
3941 to be friendlier to the prediction heuristics implemented,
3942 particularly with reference to CALL and RET pairing. (thanks to
3943 Alastair Bridgewater)
3944 * optimization: on x86, the code for access to thread-local symbol
3945 values and binding/unbinding of thread-local symbols is smaller.
3946 (thanks to Alastair Bridgewater)
3947 * enhancement: CONSTANTP is now able to determine constantness of
3948 more complex forms, including calls to constant-foldable standardized
3949 functions and some special forms beyond QUOTE.
3950 * fixed bug: occasional GC crashes on Solaris/x86
3951 * optimization: x86-64 supports stack allocation of results of simple
3952 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3953 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3954 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3955 (thanks to James Knight)
3956 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3957 by the standard (thanks to Stephen Compall)
3959 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3960 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3961 be used for bundling the runtime and the core file into one
3962 executable binary. This feature is not currently supported on all SBCL
3963 platforms. (thanks to James Bielman and NIIMI Satoshi)
3964 * new feature: a generational or ephemeral garbage collector is now
3965 the default on the PowerPC platform (both Linux and Darwin). The
3966 old Cheney (stop and copy) collector is a build-time option.
3967 (thanks to Cyrus Harmon, after Raymond Toy)
3968 * minor incompatible change: the method by which SBCL finds its
3969 contributed modules has changed; it no longer relies on symbolic
3970 links from an $SBCL_HOME/systems directory, but searches directly
3971 in the subdirectories of $SBCL_HOME.
3972 * enhancement: the dynamic heap size on the Linux/PPC platform is
3973 markedly larger, even using the older Cheney garbage collector.
3974 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3975 certain complicated string types. (reported by Gary King)
3976 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3977 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3978 * fixed bug: DOCUMENTATION on structures no longer signals an
3979 error if no structure type of the right name exists. (reported by
3981 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3982 applicable non-standard primary or :AROUND method on
3983 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3984 no longer cause unbound variable errors. (reported by Kevin Reid)
3985 * fixed bug: metacircle resolution in cases where methods have slots
3986 added before the slots from STANDARD-METHOD. (reported by Jean
3988 * fixed bug: the Power PC assembly code for calling into lisp
3989 sometimes computed its return address wrongly (depending on the
3990 15th bit of the address, fixed at link time). This used to
3991 manifest itself in a segmentation violation while building PCL.
3992 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3993 many others over the years)
3994 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3995 the stack pointer (treated as a signed integer) is negative.
3996 (thanks to Peter van Eynde)
3998 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3999 * new platform: experimental support for the Windows operating
4000 system has been added. (thanks to Alastair Bridgewater)
4001 * fixed several bugs in and robustified the PPC FFI (including
4002 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
4003 * bug fix: allow non-simple string symbol names (reported by Paul
4005 * bug fix: interrupt handling on NetBSD (thanks to Richard M
4007 * bug fix: saving a core corrupted callbacks on x86/x86-64
4008 * bug fix: closed a loophole in metacircularity detection and
4009 grounding in the PCL implementation of CLOS.
4010 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
4011 (reported by tomppa on #lisp)
4012 * bug fix: clear the direction flag on Lisp -> C transitions, as
4013 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
4014 (reported by Andrej Grozin and Hendrik Maryns)
4015 * optimization: major improvements to GC efficiency on GENCGC platforms
4016 * optimization: faster implementation of EQUAL
4017 * optimization: emit more efficient opcodes for some common
4018 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
4019 * optimization: several other minor code-generation improvements on x86-64
4020 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
4022 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
4023 * minor incompatible change: (SETF CLASS-NAME) and (SETF
4024 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
4025 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
4026 by ANSI as a generic function, and for consistency (SETF
4027 GENERIC-FUNCTION-NAME) is treated likewise.
4028 * fixed bug #233.b: make constraint propagation notice when a variable
4029 value is changed after it is referenced but before it is used
4030 * fixed bug #296: no more arbitrary behaviour from filenames with
4031 odd characters as --load arguments. (reported by Adam Warner)
4032 * fixed bug #390: :CHARACTER-SET pathname components now work as
4033 expected. (reported by Tim Daly Jr)
4034 * fixed bug #391: complicated :TYPE intersections in slot
4035 definitions no longer cause an error in PCL internals.
4036 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
4037 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
4038 returning the number of octets which would be written to the
4039 file-stream. (thanks to Robert J. Macomber)
4040 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
4041 arguments to the internal stream functions. (thanks to David
4043 * bug fix: stack exhaustion is now handled on the x86/SunOS
4044 platform. (thanks to Daisuke Homma)
4045 * bug fix: more accurate ROOM results on GENCGC platforms
4046 * optimization: improved type inference for arithmetic-for
4047 index variables in LOOP
4048 * optimization: faster floating-point SQRT on x86-64
4049 * fixed some bugs revealed by Paul Dietz' test suite:
4050 ** DOCUMENTATION returns NIL instead of "" for method combinations
4051 that don't have a docstring
4053 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
4054 * minor incompatible change: (SETF CLASS-NAME) and (SETF
4055 GENERIC-FUNCTION-NAME) are no longer generic functions, and
4056 therefore are not customizeable by user code (as seems to be at
4057 least permitted and maybe required by AMOP). As a consolation,
4058 however, the SBCL implementation of these functions now calls
4059 REINITIALIZE-INSTANCE as specified by AMOP.
4060 * bug fix: slot-definition documentation is propagated as per ANSI
4061 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
4062 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
4063 argument, as do eslotd initialization methods. (from Pascal
4064 Costanza's "Closer" project)
4065 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
4066 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
4068 * bug fix: it is now possible to have more than one subclass of
4069 STANDARD-GENERIC-FUNCTION without causing stack overflow.
4070 (reported by Bruno Haible, Pascal Costanza and others)
4071 * bug fix: the dependent update protocol now works for generic
4072 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
4073 and Pascal Costanza)
4074 * bug fix: condition-class instances corresponding to
4075 DEFINE-CONDITION forms are now created eagerly. (reported by
4076 Kalle Olavi Niemitalo on comp.lang.lisp)
4077 * bug fix: floating point printing is more accurate in some
4078 circumstances. (thanks to Simon Alexander)
4079 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
4080 merged with *DEFAULT-PATHNAME-DEFAULTS*.
4081 * bug fix: callbacks on OS X now preserve stack-alignment.
4082 (thanks to Cyrus Harmon)
4083 * enhancement: the x86-64 disassembler is much better at
4084 disassembling SSE instructions. (thanks to Lutz Euler)
4085 * enhancement: CHECK-TYPE on a variable now allows type-inference
4086 (thanks to Vincent Arkesteijn)
4087 * optimization: improved performance of EUC-JP external format.
4088 (thanks to NIIMI Satoshi)
4089 * optimization: performance improvements to IO on file streams of
4090 :ELEMENT-TYPE CHARACTER
4091 * optimization: much faster memory allocation on x86-64
4092 * optimization: faster garbage collections (latency and throughput)
4094 * optimization: faster bignum subtraction and division on x86 and x86-64
4095 (thanks to Lutz Euler)
4096 * optimization: more accurate type-inference for loops that use a
4097 floating point index variable or a negative step.
4099 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
4100 * bug fix: add a workaround to SBCL looping infinitely at startup on
4101 Linux kernels with apparently buggy implementations of personality().
4102 (thanks to Svein Ove Aas)
4103 * bug fix: Unicode symbols are correctly printed in LDB backtraces
4104 (thanks to David Lichteblau)
4105 * bug fix: local bindings shadow global symbol macros for
4106 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
4107 * optimization: non-open coded uses of numeric comparison operators
4108 (e.g. >) no longer cons when called with more than one parameter
4109 on platforms supporting dynamic-extent allocation.
4110 * enhancement: saving cores with foreign code loaded is now supported
4111 on MIPS/Linux in addition to the previously supported platforms.
4112 * bug fix: FIND-RESTART now tests for activity, not applicability when given
4113 a restart object as identifier. (reported by Helmut Eller for CMUCL)
4114 * bug fix: division by zero in sb-sprof when no samples were collected
4115 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
4116 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
4117 (thanks to Alexander Kjeldaas)
4118 * new feature: ignoring the return values of destructive functions
4119 like NREVERSE signals a compile-time style-warning.
4120 (thanks to Kevin Reid)
4121 * new feature: the alignment of alien structure fields can be
4122 explicitly specified. (thanks to Cyrus Harmon)
4123 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
4124 and dump core on SIGQUIT
4126 ** incompatible change: threads do not inherit values of specials
4127 from their parents (see manual)
4128 ** bug fix: threads stacks belonging to dead threads are freed by the
4129 next exiting thread, no need to gc to collect thread stacks anymore
4130 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
4131 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
4132 ** bug fix: dynamic variable and thread start related gc lossage
4133 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
4135 * fixed some bugs revealed by Paul Dietz' test suite:
4136 ** SUBTYPEP is slightly more accurate on heinously complicated
4137 CONS types where some of the members have uncertain (in the
4138 NIL, NIL sense) type relationships to each other.
4140 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
4141 no longer purified unless :PURIFY T is explicitly specified.
4142 ** Non-purified cores are significantly smaller than before
4144 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
4145 * new feature: timers based on Zach Beane's excellent timer package
4146 * added support for the following external formats: koi8-u,
4147 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
4148 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
4149 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
4150 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
4151 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
4152 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
4153 * incompatible change: a threaded SBCL will no longer revert to
4154 non-threaded mode on non-NPTL systems, but refuse to start entirely.
4155 * bug fix: interrupts are disabled until startup is complete; no
4156 more sigsegvs when receiving a signal to soon
4157 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
4159 * bug fix: add a workaround for the memory randomization features in
4160 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
4161 workaround will only be in effect on systems with the proc filesystem
4163 * bug fix: printing objects of type HASH-TABLE signals a
4164 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
4166 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
4167 have been running for over 50 days. (reported by Gilbert Baumann)
4168 * bug fix: the logic for getting names of functions gets less
4169 confused when confronded with alternate-metaclass
4170 funcallable-instances. (reported by Cyrus Harmon)
4171 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
4172 consistent, even on internal alternate-metaclass objects.
4173 * bug fix: flush closure information collected by physical
4174 environment analysis prepass before the main pass. (bug reported
4176 * bug fix: compiler pack phase does not modify a hashtable, which is
4177 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
4178 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
4179 may be expanded. (reported by Alexander <malishev> on c.l.l)
4180 * bug fix: no more style-warnings when compiling code using LAST
4181 under high-SPEED low-SPACE settings. (reported by David Wallin
4183 * fixed some incompatibilities between SBCL's MOP and the MOP
4185 ** the METAOBJECT class is now implemented;
4186 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
4187 STANDARD-OBJECT, as required;
4188 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
4189 now compatible (as required by VALIDATE-SUPERCLASS); there
4190 remains a consistency requirement over the presence or absence
4191 of the FUNCTION class in the superclass list of finalized
4192 classes; see the manual for more details;
4193 ** the :AROUND method for COMPUTE-SLOTS on
4194 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
4195 requested slot ordering.
4197 ** bug fix: parent thread now can be gc'ed even with a live
4199 ** bug fix: binding a special with PROGV to no value is not
4200 the same as that symbol not having been bound (thanks to
4202 ** bug fix: binding specials is thread safe (thanks to
4204 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
4205 and SB-SPROF do not die with 'no handler for signal XX in
4206 interrupt_handle_now(..)' anymore
4207 ** bug fix: WITH-TIMEOUT works with multiple running threads
4208 * fixed some bugs revealed by Paul Dietz' test suite:
4209 ** ENSURE-GENERIC-FUNCTION should take a method class object for
4210 the :method-class keyword argument.
4212 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
4213 * new port: the Solaris operating system on x86 processors is now
4214 mostly supported, though some rough edges in the environment
4215 remain. (thanks to Daisuke Homma)
4216 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
4217 space for its heap. (thanks to Thiemo Seufer)
4218 * optimization: SBCL on MIPS platforms now supports dynamic-extent
4219 closures. (thanks to Thiemo Seufer)
4220 * minor incompatible change: eof selects abort in the debugger.
4221 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
4222 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
4224 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
4225 deprecated, and will go away in a future revision of SBCL.
4226 * minor incompatible change: GC-ON and GC-OFF are no longer
4227 implemented with a counter, it does not matter how many times gc
4228 is switched on or off
4229 * bug fix: discriminating functions for generic function classes
4230 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
4231 make invalid assumptions about method precedence order. (reported
4233 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
4234 platforms. (thanks to Thiemo Seufer)
4235 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
4236 * bug fix: correct pathname printing with printer escaping is on.
4237 (thanks to Kevin Reid)
4238 * bug fix: complex VOP definitions in "user-space" no longer trigger
4239 package locks. (reported by Zach Beane)
4240 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
4241 for funcallable-instance functions, and is no different from
4243 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
4244 characters in the current readtable. (reported by Nicholas Neuss)
4245 * bug fix: SUBTYPEP on various CONS types returns more a more
4246 accurate acknowledgment of its certainty.
4247 * optimizations: REMOVE-DUPLICATES now runs in linear time on
4248 lists in some cases. This partially fixes bug 384.
4249 * flush all standard streams before prompting in the REPL and the
4251 * bug fix: signal handling and triggering gc do not conflict
4252 directly anymore, in particular a high frequency sb-sprof does
4253 not prevent gc from running
4254 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
4255 approximation for timezone and DST information between the
4256 universal time epoch and the smallest negative 32-bit time_t.
4257 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
4258 year 1899 so long as the encoded time is non-negative.
4259 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
4260 the correct answer for non-constant rotate amounts when performing
4261 an inline 32-bit rotation.
4263 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
4264 there is only one thread in the session
4265 ** bug fix: memory leak for streams created in one thread and
4266 written to in another
4267 ** bug fix: lockup when compiled with gcc4
4268 ** bug fix: race that allows the gc to be triggered when gc is
4270 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
4271 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
4273 ** bug fix: finished threads are gc'ed properly
4274 * fixed some bugs revealed by Paul Dietz' test suite:
4275 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
4276 has arguments with a different set of applicable methods from
4277 the orignal arguments.
4278 ** The type error thrown by MAP now has a correct expected-type
4280 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
4281 name a compiled function.
4282 ** Three MISC tests where a large bignum was improperly coerced to
4283 a float that couldn't represent that bignum during type
4284 derivation were fixed.
4285 ** SUBTYPEP can now handle types involving the negation of a
4286 list-form FUNCTION type.
4287 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
4288 as (COMPLEX (AND RATIO (NOT FIXNUM))).
4289 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
4291 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
4292 * New feature: Experimental support for bivalent streams: streams
4293 opened with :element-type :default now allow character and binary
4294 (unsigned-byte 8) I/O
4295 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
4296 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
4298 * bug fix: no more highly sporadic "couldn't check whether ~S is
4299 readable" when reading a stream and an interrupt hits in the middle
4300 of a select system call
4301 * compiler better recognizes complex arrays (reported by Eduardo
4303 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
4304 for variables on SBCL built with linkage-tables. (reported by Luis
4306 * various error reporting improvements.
4307 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
4308 (Thanks to Thiemo Seufer)
4309 * bug fix: nested reader invokations work correctly
4310 * bug fix: it is possible to have simultaneous references to foreign
4311 code and foreign data with the same name.
4313 ** added x86-64 support
4314 ** incompatible change: the threading api now works with thread
4315 objects instead of thread ids
4316 ** bug fix: threads are protected from signals and interruption when
4317 starting up or going down
4318 ** bug fix: a race where an exiting thread could lose its stack to gc
4319 ** bug fix: don't halt on infinite error in threads if possible
4320 ** fixed numerous gc deadlocks introduced in the pthread merge
4321 ** bug fix: fixed thread safety issues in read and print
4322 ** bug fix: debugger doesn't hang on session lock if interrupted at
4323 an inappropriate moment
4324 ** bug fix: run-program is now thread safe(r)
4325 ** bug fix: inner with-recursive-lock no longer releases the mutex
4326 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
4327 * fixed some bugs revealed by Paul Dietz' test suite:
4328 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
4329 EXPECTED-TYPE slots filled.
4330 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
4332 ** MAKE-CONDITION accepts classes as type-designators.
4333 ** COMPILE may never return NIL.
4334 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
4335 range before calling Unix time functions
4337 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
4338 * numerous signal handling fixes to increase stability
4339 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
4340 * minor incompatible change: we now correctly canonize default
4341 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
4342 as per the MOP, rather than the historical (INITARG INITFUNCTION
4343 INITFORM). (reported by Bruno Haible)
4344 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
4345 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
4346 for more information.
4347 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
4348 pathname is a directory pathname.
4349 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
4350 * dynamic space size on PPC has been increased to 768Mb. (thanks to
4352 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
4353 :METACLASS argument in addition to a class name. (reported by
4354 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
4355 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
4356 (reported by Bruno Haible; patch from Gerd Moellmann)
4357 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
4359 * bug fix: more cleanups to the floating point exception handling on
4360 x86-64 (thanks to James Knight)
4361 * bug fix: the compiler does not try to constant fold calls of
4362 COERCE and BIT-* functions when they return freshly constructed
4363 objects. (reported by Nikodemus Siivola and Paul Dietz)
4364 * optimization: improved the MIPS versions of generic (in the
4365 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
4366 * optimization: direct conversion of (unsigned-byte 32) to floats on
4367 the PowerPC platform.
4368 * optimization: structure instances with raw slots now use less
4369 memory, and probably show better memory locality. (thanks to
4371 * optimization: DYNAMIC-EXTENT declarations for lists and closures
4372 are treated as requests for stack allocation on the x86-64,
4373 Alpha-32, PPC and SPARC platforms.
4374 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
4375 the wrong file descriptor; implementation of SOCKET-OPEN-P.
4376 (thanks to Tony Martinez)
4378 ** gcing a dead thread can no longer lead to lockups
4379 ** threads block signals until they are set up properly
4380 ** errno is no longer shared by threads
4381 ** interrupt-thread restores the eflags register on x86
4382 ** fixed some lockups due to gc/thread interaction
4383 * fixed some bugs revealed by Paul Dietz' test suite:
4384 ** invalid dotted lists no longer raise a read error when
4385 *READ-SUPPRESS* is T
4386 ** signal an error if a symbol that names a declaration is used
4387 as the name of a type, or vice versa
4388 ** allow using the (declare (typespec var*)) abbreviation for
4389 (declare (type typespec var*)) with all type specifiers
4390 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
4391 ** always return NIL from PPRINT-POP when OBJECT is NIL
4392 ** don't signal errors when pretty-printing malformed LABELS,
4393 FLET or MACROLET forms
4394 ** declarations in a DOLIST body are also in scope for the
4396 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
4398 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
4401 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
4402 * fixed cross-compiler leakages that prevented building a 32-bit
4403 target with a 64-bit host compiler.
4404 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
4405 opened with :IF-EXISTS :OVERWRITE.
4406 * fixed bug 281: error for an invalid qualifier in a short-form method
4407 combination method is not signalled until the faulty method is called.
4408 * bug fix: iteration variable type inferrer failed to deal with open
4409 intervals. (reported by Alan Shields)
4410 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
4411 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
4412 or more runtime options were provided to the sbcl binary.
4413 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
4414 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
4415 * optimization: there's now a fast-path for fixnum arguments in the
4416 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
4417 * optimization: the code generated on x86-64 is more compact thanks
4418 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
4419 * bug fix: floating-point exception handling now partly works on
4420 x86-64. (Thanks to James Knight)
4421 * improvement to the MIPS backend from Thiemo Seufer: C-style
4422 64-bit long long arguments and return values to alien functions
4424 * fixed some bugs revealed by Paul Dietz' test suite:
4425 ** the type-error signalled from WARN has a filled-in DATUM slot.
4426 ** the type-error required when a stream is not associated with
4427 a file has the stream as its datum.
4428 ** type-errors on single-floats on x86-64 no longer have
4429 :INVALID-OBJECT as the datum
4430 ** the type-errors signalled for invalid function names now have
4431 a correct expected type
4432 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
4433 for structures defined with a :TYPE. Documentation strings for
4434 typed structures are no longer immediately discarded
4435 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
4436 broadcast streams and synonym streams. FILE-LENGTH now also works
4437 on broadcast streams.
4439 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
4440 * incompatible change: the --noprogrammer option, deprecated since
4441 version 0.7.5, has been removed. Please use the equivalent
4442 --disable-debugger option instead.
4443 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
4445 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
4446 inoperational for a while now) has been completely removed.
4447 * null lexical environments are now printed as #<NULL-LEXENV>,
4448 significantly reducing the amount of clutter in typical backtraces.
4449 * documentation on weak pointers, finalization, and after GC hooks
4450 has been added to the manual.
4451 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
4452 as other specialized array types, is much faster. SUBSEQ and
4453 COPY-SEQ on such arrays have also been sped up.
4454 * optimization: EQL is now more efficient when at least other argument
4455 is known to be of type (OR FIXNUM (NOT NUMBER)).
4456 * fixed bug: the runtime is now less vulnerable to changes in the
4457 size of the SBCL object on OS X, and virtual memory is reserved for
4458 all spaces that need to be at a fixed address.
4459 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
4460 * fixed bug: finalizers and after GC hooks that cause consing are now
4462 * fixed bug: compiler error messages and summaries are now printed to
4463 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
4464 * fixed inference of the upper bound of an iteration variable.
4465 (reported by Rajat Datta).
4466 * fixed bug 211e: calling local functions with duplicated constant
4467 keyword argument no longer causes a bogus style warning about an
4469 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
4470 ftype declaration to be disregarded. (reported by Dave Roberts)
4471 * fixed bug 373: caused by erronous compilation of references to alien
4472 variables in the runtime on ppc/darwin.
4473 * fixed bug 376: CONJUGATE type deriver.
4474 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
4475 (reported by Baughn on #lisp)
4476 * a cross-compiler bug on non-x86 platforms has been identified and
4477 fixed. (thanks to Bruno Haible)
4478 * improvements to the MIPS runtime code for increased stability.
4479 (thanks to Thiemo Seufer)
4480 * increased the maximimum compact environment size to allow
4481 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
4482 * partial workaround for bug 135: don't name the function we're
4483 calling for hairy cases of EVAL, so as not to accumulate one environment
4484 entry per call to EVAL. (reported by Kevin Reid)
4485 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
4486 * optimization: type testing for non-vector arrays should be faster.
4487 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
4489 * bug fix: setting 31st element of a bit vector to zero did not work
4491 * bug fix: redefining a class definition which failed due to a
4492 previous accessor / function clash now works (but see BUGS entry
4493 #380 for more problems in this area). (thanks to Zach Beane)
4494 * the long form of DEFINE-METHOD-COMBINATION disables method group
4495 checking when given a single method group with pattern *. (thanks
4497 * on x86 compiler supports stack allocation of results of simple
4498 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
4499 * support for building and running on Mac OS X 10.4 "Tiger" has been added
4500 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
4501 * fixed some bugs related to Unicode integration:
4502 ** the restarts for recovering from input and output encoding
4503 errors only appear when there is in fact such an error to
4505 * fixed some bugs revealed by Paul Dietz' test suite:
4506 ** MISC.549 and similar: late transformation of unsafe type
4507 assertions into derived types caused unexpected code
4509 ** SCALE-FLOAT type deriver is less wrong.
4510 ** type derivers for EXP, LOG and similar functions compute result
4511 types for complex arguments better.
4512 ** (MISC.563) CONJUGATE type deriver works for very restricted
4514 ** out-of-line type testers for character strings are available.
4515 ** EQUAL compiler transform understands specialness of objects
4517 ** accessing double-floats stored on the stack now works on x86-64.
4518 ** debugger internals could sometimes create invalid lispobjs,
4519 resulting in GC crashes.
4520 ** MISC.548: type check weakening can convert required type into
4522 ** initialization forms for bindings are not in scope of free special
4525 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
4526 * incompatible change: thread support for non-NPTL systems has
4527 been removed - locking is buggy and unreliable. A threaded
4528 SBCL build will now warn at startup and refuse to create
4529 new threads, unless futex support is detected in the kernel
4530 * incompatible change: the top level REPL now has only an ABORT
4531 restart associated with it, not TOPLEVEL and ABORT as it used to.
4532 TOP and TOPLEVEL are now available as debugger commands for
4533 returning to the top level.
4534 * incompatible change: forms evaluated in the REPL now use the
4535 global optimization policy.
4536 * incompatible change: user- and system-initialization files are
4537 no longer processed with LOAD, but by READ and EVAL; hence the
4538 global optimization policy, startup package, readtable, etc,
4540 * The .fasl file format number has been incremented because of
4541 various incompatible changes.
4542 * internal entry point details and argument counts no longer appear
4543 in backtraces unless explicitly requested by setting
4544 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
4545 * built-in and standard functions no longer have names like "top
4546 level local call to FOO".
4547 * fixed bug 32: functions defined in non-null lexical environments
4548 now have more legible printed representation
4549 * fixed bug 33: functions defined in non-null lexical environemnts
4550 are now more amenable to inspection by INSPECT.
4551 * workaround for bug 354: XEPs no longer appear in backtraces unless
4552 explicitly requested.
4553 * fixed bug: receiving the signal which results from attempting to
4554 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
4555 SIGBUS on other *BSDs) on architectures where the C stack is also
4556 the Lisp stack (x86 and x86-64) from foreign code no longer leads
4557 to debugger confusion or wild instability. (reported by Cheuksan
4559 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
4560 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
4561 (reported by Lutz Euler)
4562 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
4563 compiled code. (reported by Paul Dietz)
4564 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
4565 specialized parameter to a method to something that is not TYPEP
4566 the specializer is now possible.
4567 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
4568 face of package deletion.
4569 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
4570 pathname. (reported by David Tolpin on c.l.l)
4571 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
4572 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
4573 STRING-STREAM and FILE-STREAM, respectively.
4574 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
4575 than previously; in addition, its test suite is now run on build.
4576 (thanks to Luke Gorrie)
4577 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
4578 * optimization: added a immediate representation for single-floats
4580 * fixed some bugs revealed by Paul Dietz' test suite:
4581 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
4582 ** attempting to create a package with a colliding nickname causes
4583 correctable errors to be signalled.
4584 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
4585 ** several x86-64 backend bugs related to sign-extension of immediate
4588 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
4589 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
4590 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
4592 * fixed loading of multiply forward-referenced layouts.
4593 (thanks to Cheuksan Wang)
4594 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
4595 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
4596 (see COMPILE-FILE documentation for details of :PRINT option)
4597 * fixed bugs 19 and 317: fixed-format floating point printing is
4598 more accurate. This also fixes a bug reported by Adam Warner
4599 related to the ~@F format directive.
4600 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
4602 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
4603 dispatch table if the from-char is a dispatch macro character.
4604 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
4605 by the wordsize no longer ignore the last word. (reported by Lutz
4607 * fixed bug in type checking of dynamic-extent variables. (reported
4609 * optimization: sequence traversal functions use their freedom to
4610 coerce function designators to functions.
4611 * optimization: code with many calls to CLOS methods specialized on
4612 CLOS classes has had redundant type checks removed.
4613 * optimization: added declarations to speed up operations that access
4614 the internal character database (for example STRING-UPCASE)
4615 * optimization: comparison operations between floats and sufficiently small
4616 fixnums no longer create extra rationals
4617 * fixed some bugs related to Unicode integration:
4618 ** portions of multibyte characters at the end of buffers for
4619 character-based file input are correctly transferred to the
4620 start of the buffer at the next read.
4621 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
4622 passing it through to OPEN.
4623 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
4624 argument given to internal calls to OPEN.
4625 ** the built-in comment readers (introduced by character sequences
4626 ";" and "#|") are more forgiving to encoding errors; they will
4627 STYLE-WARN and then attempt to resync the stream at a character
4628 boundary. (thanks to Teemu Kalvas)
4629 * fixed some bugs in the x86-64 port:
4630 ** Negative short int return values from c-calls are sign-extended
4632 ** The stack is aligned to 16-bytes for c-calls, as required by
4633 the ABI. (thanks to Cheuksan Wang)
4634 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
4635 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
4636 for enums. (thanks to Vincent Arkesteijn)
4637 ** Multiple small optimizations and bugfixes for floating point
4639 * fixed some bugs revealed by Paul Dietz' test suite:
4640 ** Space, Tab, Linefeed, Return and Page have the invalid
4641 secondary constituent character trait.
4642 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
4644 ** WITH-INPUT-FROM-STRING should only update the index place on
4646 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
4647 works more reliably.
4648 ** Bit-array operations (BIT-AND and similar) worked incorrectly
4649 with one-dimensional arrays with fill pointers.
4650 ** TYPE-OF failed on a complex with an integer realpart and a
4652 ** compiler failure during type inference for the code of form
4653 (IF (EQL X (THE ...)) ...) (MISC.535).
4655 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
4656 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
4657 platform. The port supports 61-bit fixnums, large memory spaces
4658 and reloading shared object files.
4659 * enhancement: saving cores with foreign code loaded is now
4660 supported on ppc/Darwin in addition to the previously supported
4662 * enhancement: the statistical profiler now walks deeper into the
4663 call stack for more meaningful call-graphs and accrued time
4664 reports (x86/x86-64 only). It also now reports time spent in
4666 * enhancement: it is now possible to trace most individual methods
4667 of a generic function in addition to tracing the generic function
4669 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
4671 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
4672 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
4673 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
4674 produces an error. (thanks to Vincent Arkesteijn)
4675 * bug fix: NAMESTRING on pathnames with :WILD components in their
4676 directories works correctly. (thanks to Artem V. Andreev)
4677 * fixed bug 125: compiler preserves identity of closures. (reported
4679 * bug fixed: functions with &REST arguments sometimes failed with
4680 "Undefined function" when compiled with (DEBUG 3). (reported by
4682 * bug fix: overflow during compiling of setting element of a bit
4683 vector with constant index and value. (reported by Timmy Douglas)
4684 * build fix: fixed the dependence on *LOAD-PATHNAME* and
4685 *COMPILE-FILE-PATHNAME* being absolute pathnames.
4686 * on x86 compiler partially supports stack allocation of dynamic-extent
4688 * GO and RETURN-FROM do not check the extent of their exit points
4689 when compiled with SAFETY 0.
4690 * fixed some bugs related to Unicode integration:
4691 ** encoding and decoding errors are now much more robustly
4692 handled; it should now be possible to recover even from invalid
4693 input or output to the terminal. (thanks to Teemu Kalvas)
4694 ** provided a first cut at implementing STRING-TO-OCTETS and
4695 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
4696 ** altered the SB-MD5 contributed module slightly, changing the
4697 interface just enough for it to be supportable for builds where
4698 lisp characters are not eight bits.
4699 * fixed some bugs revealed by Paul Dietz' test suite:
4700 ** the FORMATTER-generated functions for ~V[ conditionals require
4701 the correct number of arguments.
4702 ** READ-FROM-STRING returns the mandated second value when applied
4703 to displaced strings.
4704 ** the #\Rubout and #\Backspace characters are treated as invalid
4705 constituent characters by the tokenizer.
4707 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
4708 * new feature: reloading changed shared object files with
4709 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4710 * new feature: references to foreign variables and functions
4711 can now be compiled and loaded before the corresponding shared
4712 object file is loaded, as long as the foreign definitions are
4713 available at runtime.
4714 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
4715 supported. (thanks to Dan Debertin)
4716 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
4717 just keywords. (thanks to Vincent Arkesteijn)
4718 * fixed bug #331: structure-class instances corresponding to
4719 DEFSTRUCT forms are now created eagerly.
4720 * fixed bug #345: backtraces from calls to undefined functions work
4721 on x86 as well. Related bug #61 is now also partially fixed on x86
4722 (backtraces from throws to unknown catch tags.)
4723 * bug fix: lambda-list parsing is now stricter vrt. order and number
4724 of lambda-list keywords.
4725 * bug fix: as specified by AMOP, an error is signalled if a
4726 class-option appears multiple times in a DEFCLASS form. (reported
4728 * bug fix: RANDOM can be compiled when the compiler derives the type
4729 of its numeric argument as a disjoint set of small integers.
4730 (reported by Paul Dietz)
4731 * bug fix: starting a core saved with shared objects loaded when
4732 those objects are not available no longer causes threaded SBCL to
4733 hang. (reported by Sean Ross)
4734 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
4736 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
4737 argument, which must always be NIL. (reported by Kalle Niemitalo)
4738 * bug fix: printing 1.0d+23 no longer results in an error.
4739 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
4740 * bug fix: structure slot setters preserve evaluation order. (thanks
4742 * fixed some bugs related to Unicode integration:
4743 ** RUN-PROGRAM can allow its child to take input from a Lisp
4744 stream. (reported by Stefan Scholl)
4745 ** ASDF-INSTALL successfully downloads .tar.gz files in all
4746 locales. (reported by Ken Causey)
4747 * fixed some bugs revealed by Paul Dietz' test suite:
4748 ** INCF, DECF and REMF evaluate their place form as specified in
4750 ** FORMATTER expands ~{ ~} iteration directives with V or #
4751 parameters correctly.
4752 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4753 consequent uses no arguments correctly.
4754 ** the system has a partial understanding of the (COMPLEX RATIO)
4756 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4759 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4760 * new feature: a build-time option (controlled by the :SB-UNICODE
4761 keyword feature, enabled by default) for building the system with
4762 support for the entire 21-bit character space defined by the
4764 * new feature: the system now has rudimentary external-format
4765 support; the primary user-visible change at this time is that
4766 characters with the high bit set (such as lower-case-e-acute) will
4767 print correctly to a terminal in a UTF-8 environment.
4768 * minor incompatible change: BASE-CHAR no longer names a class;
4769 however, CHARACTER continues to do so, as required by ANSI.
4770 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4771 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4772 has been moved to the SB-EXT package (temporarily re-exported from
4774 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4775 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4777 * fixed bug #351: better error-handlind and reporting for malformed
4779 * fixed bug #350: bignum-printing is now more memory-efficient,
4780 allowing printing of very large bignums, eg. (expt 2 10000000).
4781 (reported by Bruno Haible)
4782 * fixed bug #302: better primitive-type selection for intersection
4784 * fixed bug #308: non-graphic characters now all have names, as
4785 required. (reported by Bruno Haible)
4786 * bug fix: redefining a class with different superclasses now correctly
4787 removes it from the direct-subclasses of its previous superclasses.
4788 (reported by David Morse)
4789 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4790 new value now works. (reported by Bruno Haible)
4791 * bug fix: correct canonicalization of multiple non-standard slot
4792 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4793 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4794 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4795 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4796 now exists, an signals an error.
4797 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4798 during macroexpansion for non-iteration variables as well. (reported
4799 by Bruno Haible for CMUCL)
4800 * bug fix: Cyclic structures and unprintable objects in compiler
4801 messages no longer cause errors. (reported by Bruno Haible)
4802 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4803 and READ-FROM-STRING all now return a primary value of NIL if
4804 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4805 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4806 (reported by Bruno Haible for CMUCL)
4807 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4808 do not designate a condition. (reported by Bruno Haible for
4810 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4811 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4812 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4813 permitting resolution in favour of any of the conflicting symbols.
4814 (reported by Bruno Haible for CMUCL)
4815 * bug fix: EQUAL compiler optimizations is less aggressive on
4816 strings which can potentially compare true despite having distinct
4817 specialized array element types.
4818 * bug fix: unit enumerations can be defined without dividing by
4819 zero. (thanks to Vincent Arkesteijn)
4820 * FORMAT compile-time argument count checking has been enhanced.
4821 (report from Bruno Haible for CMUCL)
4822 * a partial workaround for the bug 262: the compiler does not try to
4823 inline-expand a local function doing RETURN-FROM from a deleted
4824 BLOCK. (thanks to Peter Denno for the bug report and to David
4825 Wragg for the simple test case)
4826 * fixed some bugs revealed by Paul Dietz' test suite:
4827 ** RENAME-PACKAGE allows all package designators as new package
4829 ** constraint propagation and lambda variable substitution are
4830 more cautious in dealing with partially deleted code.
4831 ** compiler sometimes lost reoptimization passes.
4832 ** CERROR, given a condition as condition designator, passes its
4833 remaining arguments to the continue format control without
4835 ** Case-altering FORMAT directives work correctly on non-ASCII
4837 ** The REAL type specifier handles bounds outside the floating
4838 point ranges without signalling FLOATING-POINT-OVERFLOW.
4839 ** Functions with IR1-transformations can create intercomponent
4840 references to global functions.
4841 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4843 ** FORMAT ~R treats a nil value for its first parameter correctly.
4845 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4846 * enhancement: saving cores with foreign code loaded is now
4847 supported on x86/NetBSD and sparc/Linux in addition to the previously
4848 supported platforms.
4849 * bug fix: on some platforms repeated installations caused multiple
4850 copies of HTML documentation to be installed -- should not happen
4851 any more. (reported by Stefan Scholl)
4852 * bug fix: parsing self-recursive alien record types multiple times
4853 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4854 original patch by Helmut Eller for CMUCL)
4855 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4856 (thanks to Richard Kreuter)
4857 * bug fix: defining classes whose accessors are methods on existing
4858 generic functions in other (locked) packages no longer signals
4859 bogus package lock violations. (reported by François-René Rideau)
4860 * bug fix: special variables as DEFMETHOD parameters no longer have
4861 associated bogus type declarations. (reported by David Wragg and
4863 * bug fix: read-write consistency on streams of element-type
4864 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4865 * bug fix: redefiniton of the only method of a generic function with
4866 no DEFGENERIC no longer emits a full WARNING. In addition,
4867 redefinition of generic functions with no DEFGENERIC to an
4868 incompatible lambda list now signals an error. (thanks to Zach
4870 * bug fix: DEFGENERIC now works even when there's a function of the
4871 same name in an enclosing lexical environment. (thanks to Zach
4873 * fixed compiler failure, caused by instrumenting code during
4874 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4875 * optimization: added loop analysis and improved register allocation
4876 * fixed some bugs revealed by Paul Dietz' test suite:
4877 ** POSITION on displaced vectors with non-zero displacement
4878 returns the right answer.
4879 ** (SIMPLE-STRING) is a valid type specifier for sequence
4881 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4883 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4884 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4886 ** The justification version of the FORMAT ~< directive treats
4887 non-zero minpad parameter correctly.
4889 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4890 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4891 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4892 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4893 the supported interface.
4894 * new feature: Single-stepping of code compiled with DEBUG 2 or
4895 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4896 * new feature: saving cores with foreign code loaded is now
4897 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4898 Timothy Moore's work for CMUCL)
4899 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4900 parameters to * instead of NIL if no initform is supplied.
4901 (reported by Johan Bockgaard)
4902 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4903 correctly when FUNCALL appears as the car of the form. Note:
4904 despite this FUNCALL forms are not currently subject to
4905 compiler-macro expansion. (port of Raymond Toy's fix for the
4906 same from CMUCL, reported by Johan Bockgaard)
4907 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4908 (thanks for Teemu Kalvas)
4909 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4910 case instead of terminating the iteration (thanks for Julian
4911 Squires, Sean Champ and Raymond Toy)
4912 * bug fix: incorrect expansion of defgeneric that caused a style
4913 warning. (thanks for Zach Beane)
4914 * bug fix: slot accessor effective method computation works properly
4915 for classes with multiple non-standard applicable methods on
4916 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4917 * on x86 compiler supports stack allocation of results of LIST and
4918 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4919 CMUCL implementation by Gerd Moellmann)
4920 * fixed some bugs revealed by Paul Dietz' test suite:
4921 ** FORMAT strings with both the ~<~:;~> form of the justification
4922 directive and pretty-printing directives cause an error.
4924 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4925 * incompatible change: the internal functions
4926 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4927 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4928 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4929 instead of the old functions.
4930 * new feature: on platforms where "dladdr" is available foreign
4931 function names now appear in backtraces. (based on Helmut Eller's
4933 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4934 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4936 * documentation: ASDF manual is now distributed with SBCL.
4937 * bug fix: SBCL can now load its contributed modules with REQUIRE
4938 even if the system-provided entries have been removed from
4939 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4941 * bug fix: backtraces involving undefined functions or assembly
4942 routines are more informative. (thanks to Brian Downing)
4943 * bug fix: mutually referent alien structures now work correctly.
4944 (reported by Rick Taube)
4945 * bug fix: structures defined by WITH-ALIEN can be referred to
4946 within other definitions in the same WITH-ALIEN.
4947 * bug fix: division operators (MOD, TRUNCATE and the like) with
4948 constant zero divisors and integer dividends no longer generate
4950 * bug fix: provide default methods for INPUT-STREAM-P and
4951 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4952 * bug fix: improve the detection and resolution of MOP metacycles
4953 (where effective method computation depends on the generic function
4954 having its effective method computed). (reported by Bruno Haible)
4955 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4956 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4957 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4958 * bug fix: pathnames with relative directory components can be
4959 represented relative to default pathnames.
4960 * optimization: in taking the GCD of bignums, reduce the two bignums
4961 to approximately the same size (using Euclid's algorithm) before
4962 applying the more sophisticated binary GCD. (thanks to Juho
4964 * optimization: COUNT on bitvectors now operates word-at-a-time.
4965 * optimization: ASH with a positive, but not necessarily constant,
4966 (leftwards) shift, when in a modular context, is compiled to a
4968 * fixed some bugs revealed by Paul Dietz' test suite:
4969 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4970 if the corresponding argument is NIL.
4971 ** FORMAT directives accepting a minpad parameter treat negative
4973 ** literal commas as character parameters to FORMAT directives are
4975 ** literal spaces directly after ~<Newline> directives within a
4976 format-logical-block (~:< ~@:>) do not induce :FILL-style
4977 conditional newlines.
4978 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4979 as specified: it no longer includes conditional newlines).
4980 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4982 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4983 :PER-LINE-PREFIX argument does not evaluate to a string.
4985 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4986 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4987 the manual for details; for now, package locks can be disabled by
4988 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4989 if no major problems are found then it is likely that they will be
4990 compiled in unconditionally.
4991 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4992 unsupported operators on all platforms. To load a shared library
4993 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4994 object file, link it into a shared library outside of SBCL and
4995 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4997 * bug workaround: ROOM T and the GC were not working together
4998 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4999 reporting facility aren't preserved. That reporting has been
5000 disabled, so now until and unless someone figures out how to make it
5001 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
5002 * minor incompatible change: as threatened around sbcl-0.8.0, the
5003 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
5004 The symbols are also exported from SB-PCL for backwards
5005 compatibility, but more so than before SB-PCL should be treated as
5006 an implementation-internal package.
5007 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
5009 * the SB-SPROF contrib now works on (most) non-x86 architectures.
5010 It is known as of this release not to work on the Alpha, however.
5011 * fixed bug #167: errors signalled due to illegal syntax in method
5012 bodies are now more legible.
5013 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
5014 designators and can hence be used with TYPEP.
5015 * fixed bug #333: CHECK-TYPE now ensures that the type error
5016 signalled, if any, has the right object to be accessed by
5017 TYPE-ERROR-DATUM. (reported by Tony Martinez)
5018 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
5019 5.1.2.3 for multiple-value place subforms. (reported by Kalle
5021 * fixed bug #334: programmatic addition of slots using specialized
5022 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
5023 and :ALLOCATION :CLASS slots.
5024 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
5025 float exponents. (rereported by Peter Seibel)
5026 * fixed a bug: #\Space (and other whitespace characters) are no
5027 longer considered to be macro characters in standard syntax by
5028 GET-MACRO-CHARACTER.
5029 * fixed bug: initialization of condition class metaobjects no longer
5030 causes an instance of the condition to be created. (reported by
5032 * fixed bug: it is now possible to have slots such that
5033 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
5034 description is neither :INSTANCE nor :CLASS.
5035 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
5036 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
5037 SLOT-VALUE-USING-CLASS), and no longer causes errors with
5038 non-standard SLOT-DEFINITION-ALLOCATION values.
5039 * fixed bugs: various race conditions handling exiting threads.
5040 CL-PPCRE's thread torture test now passes.
5041 * fixed arguably-a-bug: GC time proportional to number of threads in
5042 system even when most of them are idle
5043 * optimization: improved performance of BIT and SBIT on bit-vectors.
5044 * .fasl file incompatibility: The fasl file version number has
5045 been incremented because of changes associated with package locks.
5047 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
5048 * minor incompatible change: the system no longer provides
5049 optimization hints (conditions which are TYPEP
5050 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
5051 mode; these hints are still emitted when higher SPEED optimization
5053 * new contrib module: a sampling profiler (profiling by statistical
5054 sampling, rather than by instrumenting functions) is available as
5055 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
5056 * the behaviour of the standard function ED is now customizeable by
5057 third parties through a hook variable: see ED's documentation
5058 string for information on the protocol.
5059 * the compiler no longer emits efficiency notes for (FUNCALL X)
5060 when the type of X is uncertain under default optimization
5062 * fixed bug 276: mutating a binding of a specialized parameter to a
5063 method to something that is not TYPEP the specializer is now
5065 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
5066 exhibit the required behaviour on the x86 platform. (thanks to
5067 Peter van Eynde, Eric Marsden and Bruno Haible)
5068 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
5069 even for difficult arguments. (reported by Peter Graves)
5070 * fixed bug 141a: the backquote printer now descends quoted
5072 * fixed another bug in backquote printing: no more destructive
5073 modification of the form's list structure. (reported by Brian
5075 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
5076 move between its address being taken and the call to
5077 interrupt_thread, fixing a crashing race condition.
5078 * the SB-POSIX contrib implementation has been adjusted so that it
5079 no longer exhibits ridiculously poor performance when constructing
5080 instances corresponding to C structs.
5082 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
5083 * minor incompatible change: the sb-grovel contrib now treats C
5084 structures as alien (in the sense of SB-ALIEN) objects rather than
5085 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
5086 has implications for memory management of client code
5087 (sb-grovel-returned objects must now be manually managed) and for
5088 type safety (alien objects now have full types).
5089 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
5090 used to control emission of compiler diagnostics, rather than the
5091 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
5092 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
5093 quality should be considered deprecated.
5094 * install.sh now installs the user manual as well
5095 * (not quite a new documentable feature, but worth considering in
5096 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
5097 beginnings of a semantically meaningful condition hierarchy is
5098 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
5100 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
5101 designator as the defaults argument.
5102 * fixed bug: Displaced arrays whose displaced-to array has become
5103 too small now cause ARRAY-DIMENSION to signal an error, providing
5104 for safer bounds-checking. (reported by Bruno Haible)
5105 * fixed bug: DEFCLASS slot definitions with identical :READER and
5106 :WRITER names now signal a reasonable error. (reported by Thomas
5108 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
5110 * fixed bug: Invalid slot specification errors now print correctly.
5111 (thanks to Zach Beane)
5112 * fixed bug 320: Shared to local slot value transfers in class
5113 redefinitions now happen corrently from superclasses as
5114 well. (reported by Bruno Haible)
5115 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
5117 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
5118 improper lists correctly. (reported by Bruno Haible)
5119 * fixed bug 313: source-transform for <fun-name> was erroneously
5120 applied to a call of a value of a variable with name <fun-name>.
5121 (reported by Antonio Menezes Leitao)
5122 * fixed bug 307: The obsolete instance protocol ensures that
5123 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
5124 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
5125 remove dead unknown-values globs from the middle of the stack.
5126 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
5127 easier to resume long computations after using *BREAK-ON-SIGNALS*
5128 to diagnose and fix failures. (thanks to Nikodemus Siivola)
5129 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
5130 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
5131 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
5132 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
5133 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
5135 * fixed a (fairly theoretical) bug in string printing: if
5136 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
5137 does not have array-element-type equal to the most general string
5139 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
5140 function name. (thanks to Nikodemus Siivola)
5141 * fixed bug: compile-time format string checker failed on
5142 non-closed ~{. (reported by Thomas F Burdick)
5143 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
5144 don't warn on legal loop code involving more than one aggregate
5145 boolean. (thanks to Nikodemus Siivola)
5146 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
5147 in keyword position to MAKE-PACKAGE was not being reported as
5149 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
5150 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
5152 * fixed bugs 280 and 312: the checking for multiple definitions in a
5153 file is less likely to become confused by uses of inline
5155 * fixed bug: the #S reader macro performs the keyword coercion
5156 specified for slot names. (reported by Kalle Niemitalo)
5157 * fixed bug: lambda lists may contain symbols whose names start with
5158 & but are not lambda-list-keywords; their occurrence triggers a
5160 * fixed bug 321: define-method-combination argument lambda lists do
5161 not cause invalid code to be generated when &optional or &aux
5162 variables have default values. (reported by Bruno Haible)
5163 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
5164 have CLOS classes; this appears also to have fixed reported
5165 instability in stack exhaustion detection.
5166 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
5167 MUFFLE-WARNING when no associated restart is present is now
5169 * optimization: rearranged the expansion of various defining macros
5170 so that each expands into only one top-level form in a
5171 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
5173 * optimization: used a previously little-used slot in symbols to
5174 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
5176 * fixed some bugs revealed by Paul Dietz' test suite:
5177 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
5179 ** Fixed an optimization bug related to inheritance of initforms
5180 from local to shared slots.
5181 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
5182 ** CAST optimizer forgot to flush argument derived type.
5183 ** print/read consistency on floats is now orders of magnitude
5184 more likely. (thanks also to Bruno Haible for a similar report
5186 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
5187 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
5188 for objects of type REAL. Make it so.
5189 ** SXHASH is specified (infelicitously) to respect similarity,
5190 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
5191 it so. (thanks to Markus Ziegler)
5192 ** on the Alpha, the compiler succeeds in compiling functions
5193 returning a known number of arguments greater than 63.
5194 ** fixed handling of invalid NIL arguments in keyword position
5196 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
5198 ** provided a readably-printable representation for RANDOM-STATE
5200 ** ensured that pathnames, where they have a namestring, always
5201 print using #P"..." syntax.
5203 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
5204 * Support for the forthcoming 2.0 version of the NetBSD kernel
5205 running on x86 hardware has been added. (thanks to Perry
5206 E. Metzger most immediately, and others for their past work)
5207 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
5208 current release version; SBCL's OpenBSD support had been broken
5209 since about the time of OpenBSD's switch to ELF binary format.)
5210 * [placeholder for DX summary]
5211 ** user code with &REST lists declared dynamic-extent, under high
5212 speed or space and low safety and debug optimization policy.
5213 * The manual has been converted to Texinfo format and the debugger
5214 chapter from the cmucl manual has been added.
5215 * A facility has been added to extract documentation strings from
5216 sbcl and store them as Texinfo-formatted snippets for inclusion in
5217 the manual (via Texinfo's @include directive)
5218 * bug fix: compiler emitted division in optimized DEREF. (thanks for
5219 the test case to Dave Roberts)
5220 * bug fix: multidimensional simple arrays loaded from FASLs had fill
5221 pointers. (reported by Sean Ross)
5222 * bug fix: PROFILE output is printed nicely even for large numerical
5223 values. (thanks to Zach Beane)
5224 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
5225 greater than 32 handle EOF correctly.
5226 * bug fix: on X86 an immediate argument of the IMUL instruction is
5227 correctly printed in disassembly. (thanks to Lutz Euler)
5228 * bug fix: class slots in redefined classes preserve their old
5229 values. (thanks to Bruno Haible and Nikodemus Siivola)
5230 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
5231 succeeds. (reported by Marco Baringer)
5232 * fixed some bugs revealed by Paul Dietz' test suite:
5233 ** READ-SEQUENCE now works on ECHO-STREAMs.
5234 ** RATIONALIZE works more according to its specification. (thanks
5237 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
5238 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
5239 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
5240 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
5241 should matter to you only if you rebind the printer control
5242 variables and then find you want different bindings in the
5243 debugger than in the ordinary execution of your program.)
5244 * The runtime build system has been tweaked to support building
5245 (on SPARC/SunOS) using a C compiler which invokes Sun's own
5246 assembler and linker. (thanks to Nikodemus Siivola)
5247 * Unbound, undefined, undeclared variables now trigger full
5248 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
5249 more often programmer error than deliberate exploitation of undefined
5251 * optimization: the hash algorithm for strings has changed to one
5252 that is less vulnerable to spurious collisions. (thanks to Juho
5254 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
5255 needless bounds checking. (thanks to Juho Snellman)
5256 * optimization: implemented multiplication as a modular
5257 (UNSIGNED-BYTE 32) operation on the PPC backend.
5258 * fixed some bugs revealed by Paul Dietz' test suite:
5259 ** ADJUST-ARRAY now copies the datum in a zero rank array if
5261 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
5262 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
5263 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
5265 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
5267 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
5269 ** ECHO-STREAMs no longer attempt to echo the end of file value to
5270 their output stream on EOF from read.
5271 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
5272 have been read to end-of-file.
5273 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
5275 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
5276 description of determination of which consecutive characters
5278 ** Printing the "Space" character with escaping on now yields "#\\ ",
5279 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
5280 ** Reading floating-point numbers with *READ-BASE* set to a number
5281 less than 10 works correctly.
5282 ** Reading floating-point numbers with *READ-BASE* set to a number
5283 more than 10 works correctly.
5284 ** Printing with *PRINT-READABLY* targets the standard readtable, not
5285 the readtable currently in effect.
5287 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
5288 * minor incompatible change: parsing of namestrings on a physical
5289 (Unix) host has changed; numbers after the final #\. in a
5290 namestring are no longer interpreted as a version field. This is
5291 intented to be largely invisible to the user, except that the
5292 meaning of the namestring "*.*.*" has changed: it now refers to a
5293 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
5294 should usually be replaced by
5295 (make-pathname :name :wild :type :wild :version :wild)
5296 with the added benefit that this is more likely to be portable.
5297 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
5298 option to OPEN now signals an error if the file being opened
5299 exists; this may have an impact on existing code.
5300 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
5301 signals received, on the PowerPC platforms (both Linux and
5302 Darwin). (thanks to Pierre Mai for pointing out the location of
5304 * several fixes on OS X: The system now builds and runs cleanly on
5305 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
5306 (thanks to Brian Mastenbrook)
5307 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
5308 second-resolution: integer multiples of 1/3600 between -24 and 24.
5309 (thanks to Vincent Arkesteijn)
5310 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
5311 type when called with 1 argument; PEEK-CHAR checked type of
5312 PEEK-TYPE only after having read first character from a
5313 stream. (reported by Peter Graves)
5314 * bug fix: the garbage collector now has much better locality
5315 behaviour, and in particular no longer treats all memory as being
5316 exhausted when many small objects point to each other in a deeply
5318 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
5319 recognized as being TYPEP their class.
5320 * bug fix: the PUSHNEW documentation string has been corrected.
5321 (thanks to Vincent Arkesteijn)
5322 * bug fix: defaulting of the value for the last of an atypically
5323 large number of multiple values being bound was not being
5324 performed correctly on the Alpha or PPC platforms
5325 * optimization: implemented multiplication as a modular
5326 (UNSIGNED-BYTE 32) operation on the x86 backend.
5327 * optimization: SEARCH on simple-base-strings can now be open-coded.
5328 (see also contrib/compiler-extras.lisp for inspiration for
5329 teaching the compiler about the Boyer-Moore algorithm).
5330 * value, returned by MAX (and MIN) called with several EQUALP, but
5331 not EQL, arguments now does not depend on compiler settings.
5332 * fixed some bugs revealed by Paul Dietz' test suite:
5333 ** in stack analysis liveness information is propagated from
5334 non-local entry points.
5335 ** pathwise CAST removing failed when the CAST node did not start
5337 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
5338 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
5340 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
5341 host is already defined.
5342 ** RENAME-FILE works on streams instead of signalling an internal
5344 ** PEEK-CHAR uses the current readtable when determining whether
5345 or not a character is whitespace.
5346 ** MERGE-PATHNAMES handles the case when the pathname does not
5347 specify a name while the default-pathname specifies a version.
5348 ** Pathnames now stand a better chance of respecting print/read
5350 ** Attempting to use standardized file system operators with a
5351 pathname with invalid :DIRECTORY components signals a
5353 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
5355 ** DIRECTORY on logical pathnames is more correct.
5356 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
5357 signal a TYPE-ERROR if their argument is not a stream.
5358 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
5359 designator argument does not designate a stream.
5360 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
5361 examining the synonym.
5362 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
5364 ** OPEN and WITH-OPEN-STREAM allow opening streams with
5365 element-type larger than ([UN]SIGNED-BYTE 32).
5367 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
5368 * When built with the :SB-FUTEX feature, threaded builds now take
5369 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
5370 for faster/more reliable mutex and condition variable support.
5371 * Incompatible change (but one you probably shouldn't have been using
5372 anyway): the interface and code for arbitrating between multiple
5373 threads in the same user session has been redesigned.
5374 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
5375 error when called without an explicit environment argument.
5376 (thanks to Nikodemus Siivola)
5377 * bug fix: buffered :DIRECTION :IO streams are less likely to become
5378 confused about their position. (thanks to Adam Warner and Gerd
5380 * bug fix: Pretty printing backquoted forms with unquotations in the
5381 argument list position of various code constructs such as LAMBDA
5382 now works correctly. (reported by Paul Dietz)
5383 * bug fix: Pretty printing unquotations no longer loses all
5384 stream position information.
5385 * optimization: performance of string output streams is now less
5386 poor for multiple small sequence writes.
5387 * optimization: performance of CSUBTYPEP in the presence of complex
5388 expressions involving CONS and NOT many times has been improved.
5389 (reported by Paul Dietz)
5390 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
5392 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
5393 streams for the REPL, for the debugger, and so on. (thanks to
5395 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
5396 * fixed some bugs revealed by Paul Dietz' test suite:
5397 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
5398 is ignored if it is too small, rather than propagating through
5399 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
5400 ** extremely complex negations of CONS types were not being
5401 sufficiently canonicalized, leading to inconsistencies in
5403 ** VALUES tranformer lost derived type.
5405 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
5406 * fixed a bootstrapping bug: the build process no longer assumes
5407 that the various BOOLE-related constants have the same value in
5408 host and target lisps. (noted by Paul Dietz' test suite on an
5409 SBCL binary built from CLISP)
5410 * The system can now be dynamically linked on the MIPS platform,
5411 which enables dynamic loading of foreign code from Lisp. (thanks
5412 to Ralf Baechle for discussions on the MIPS ABI)
5413 * The system now records debugging information for its own source
5414 files in a filesystem-position-independent manner, relative to
5415 the "SYS" logical host.
5416 * fixed a compiler bug: MV-LET convertion did not check references
5417 to the "max args" entry point. (reported by Brian Downing)
5418 * tweaked disassembly notes to be less confident about proclaiming
5419 some instruction as an LRA. (thanks to Brian Downing)
5420 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
5421 now each have their own history, command character, and other
5422 characteristics. (thanks to David Lichteblau)
5423 * fixed some bugs revealed by Paul Dietz' test suite:
5424 ** compiler failure in compiling LOGAND expressions including a
5426 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
5427 shift greater than 32.
5428 ** FLUSH-DEST did not mark blocks for type check regeneration.
5429 ** HANDLER-CASE failed to accept declarations in handler clauses
5430 in some circumstances.
5432 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
5433 * New code in contrib/sb-introspect (still probably not entirely
5434 stable yet) provides some support for smart Lisp development
5435 environments like SLIME.
5436 * The conditions signalled for errors occurring when loading .fasl
5437 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
5438 in a way which should help ASDF recover gracefully.
5439 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
5440 stuff has been cleaned up. If you code contrib/ stuff, this might
5441 affect you, and you can look at contrib/README, contrib/STANDARDS,
5442 and/or the 0.8.4.27 diff to check.
5443 * In full calls the compiler now does not generate checks for declared
5444 argument types for all arguments.
5445 * various threading fixes
5446 ** and some experimental patches which didn't make it into
5447 the main tree for this release, but which are shipped in
5448 contrib/experimental-thread.patch as a possible fix for some
5449 failures (deadlock, spinning...) in GC-intensive multithreaded
5451 * fixed PPC build problem (source code incompatibility of different
5452 library versions): added offsetof() hackery which attempts to divine
5453 where glibc maintainers put uc_mcontext today
5454 * fixed bug 282: compiler does not trust type assertions while passing
5455 arguments to a full call.
5456 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
5457 &OPTIONAL VALUES type parameter.
5458 * fix bug 214: algorithm for noting rejected templates is now more
5459 similar to that of template seletion. (also reported by rydis on
5461 * fixed bug 141b: printing backquoted information readably and prettily
5462 inserts a space where necessary.
5463 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
5464 (CHARACTER 10) are now reported as errors, rather than propagated
5465 as unknown types. (reported by piso on #lisp)
5466 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
5467 with values NIL and :ERROR. (thanks to Milan Zamazal)
5468 * fixed bug 191c: CLOS now does proper keyword argument checking as
5469 described in CLHS 7.6.5 and 7.6.5.1.
5470 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
5471 longer raise an error; further, using a list as a for-as-arithmetic
5472 counter now raises a meaningful error.
5473 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
5474 now understood by sequence creation functions such as MAKE-SEQUENCE
5476 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
5477 a STRING-INPUT-STREAM.
5478 * compiler enhancement: SIGNUM is now better able to derive the type
5480 * type declarations inside WITH-SLOTS are checked. (reported by
5482 * fixed some bugs revealed by Paul Dietz' test suite:
5483 ** incorrect optimization of TRUNCATE for a positive first
5484 argument and negative second.
5485 ** compiler failure in let-convertion during flushing dead code.
5486 ** compiler failure while deriving type of TRUNCATE on an
5487 interval, containing 0.
5488 ** ASH of a negative bignum by a negative bignum count now returns
5490 ** intersection of CONS types now canonicalizes properly, fixing
5491 inconsistencies in SUBTYPEP.
5493 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
5494 * incompatible change: The --disable-debugger command line
5495 option now clobbers the debugger at a more fundamental
5496 level, by redefining #'INVOKE-DEBUGGER instead of by
5497 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
5498 is specified by ANSI to ignore *DEBUGGER-HOOK* and
5499 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
5500 enter the debugger REPL and then suffer recursive errors
5501 because *DEBUG-IO* is also messed up in --disable-debugger mode;
5502 while under the new system, BREAK in --disable-debugger mode
5503 terminates the system just as an unhandled error would.
5504 * fixed compiler performance when processing loops with a step >1;
5505 * bug fix: DOCUMENTATION now retrieves generic function
5506 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
5507 support has been systematized, and now supports the methods
5508 specified by ANSI, along with a default method and a method for
5509 slot documentation. (reported by Nathan Froyd)
5510 * bug fix: effective methods associated with a generic function are
5511 no longer cached over a change of that generic function's method
5512 combination. (reported by Andreas Fuchs)
5513 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
5514 names a non-existent directory. (thanks to Andreas Fuchs)
5515 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
5516 the PPC platform, lead to stack corruption; this has been fixed.
5517 (reported by Rainer Joswig)
5518 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
5519 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
5520 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
5521 arithmetic in general, is now much more reliable on the PPC
5523 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
5524 platform now returns the right answer.
5525 * optimization: restored some effective method precomputation in
5526 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
5527 precomputation is now tunable.
5528 * optimization: compiler-internal data structure use has been
5529 reviewed, and changes have been made that should improve the
5530 performance of the compiler by about 20%.
5531 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
5532 simple-base-strings and simple-bit-vectors is improved.
5533 * optimization: the optimization of 32-bit logical and arithmetic
5534 functions introduced in version 0.8.3 on the x86 has been
5535 implemented on the mips, ppc and sparc platforms; an
5536 implementation of the same facility, but for 64-bit arithmetic,
5537 has been added for the alpha.
5538 * microoptimization: the compiler is better able to make use of the
5539 x86 LEA instruction for multiplication by constants.
5540 * bug fix: in some situations compiler did not report usage of
5541 generic arithmetic in (SPEED 3) policy.
5542 * bug 145b fix: compiler used wrong type specifier while converting
5543 MEMBER-types to numeric.
5544 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
5546 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
5547 index argument now works properly on the Alpha platform.
5548 * bug fix: floating point exception treatment on the Alpha platform
5550 * bug fix: FILE-POSITION works much better on string input and
5551 output streams. (thanks to Nikodemus Siivola)
5552 * bug fix: many threading/garbage collection symptoms sorted.
5553 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
5554 might be pseudo-atomic.
5555 * internal change: Stopping for GC is now done with signals not
5556 ptrace. GC is now done in whichever thread wanted it, instead of
5558 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
5560 * bug fix: result form in DO is not contained in the implicit
5562 * incompatible change: ICR structure is changed; the value part of
5563 CONTINUATION is now called LVAR; corresponding functions are
5564 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
5565 * added type deriver for ISQRT (thanks to Robert E. Brown).
5566 * bug fix: better support for loading from the command line when an
5567 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
5569 * fixed some bugs revealed by Paul Dietz' test suite:
5570 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
5571 ** ROUND and FROUND now give the right answer when given very
5572 small float arguments.
5573 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
5575 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
5576 ** (GCD 0 <negative-integer>) returned <negative-integer>.
5577 ** LCM should return a non-negative integer.
5578 ** PARSE-INTEGER returned the index of a terminator instead of the
5579 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
5580 ** PARSE-INTEGER returned an incorrect index being applied to a
5582 ** LCM with two arguments of 0 returns 0 rather than signalling
5584 ** unsigned addition of a 32-bit constant with the high bit set no
5585 longer causes an internal compiler error on the x86.
5586 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
5587 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
5588 with negative last argument.
5589 ** byte specifiers with zero size and position no longer cause
5590 an error during type derivation.
5591 ** bignum multiplication on the Alpha platform now returns the
5593 * porting: The system now builds on SuSE AMD64, although it still
5594 generates a 32-bit binary.
5595 * .fasl file incompatibility: The fasl file version number has
5596 been incremented (because of the changes to internal compiler
5597 data structures referred to above).
5599 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
5600 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
5601 more accurately, on the Darwin kernel running on PowerPC hardware.
5602 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
5603 * Compiler code deletion notes now signal a condition of type
5604 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
5605 an associated MUFFLE-WARNING restart.
5606 * The compiler now performs limited argument count validation of
5607 constant format strings in FORMAT, and where appropriate in ERROR,
5608 CERROR and WARN. (thanks to Gerd Moellmann)
5609 * New ASDF-INSTALL contrib can be used for automatic download and
5610 installation of third-party Lisp code from CCLAN or other sites
5612 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
5613 which forces another thread to execute a function supplied by the
5615 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
5616 now accept and act upon their :ELEMENT-TYPE keyword argument.
5617 (reported by Martin Atzmueller, Edi Weitz)
5618 * bug fix: FILE-POSITION now accepts position designators up to
5619 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
5620 is the greater. (thanks to Patrik Nordebo)
5621 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
5622 Kalle Olavi Niemitalo)
5623 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
5624 printable. (reported by Eric Marsden)
5625 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
5626 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
5627 * x86 bug fix in control stack exhaustion checking: now shows backtrace
5628 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
5629 (thanks to Stig Sandoe)
5630 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
5631 UNREAD-CHAR now correctly includes the unread character in the
5632 target sequence. (thanks to Gerd Moellmann)
5633 * bug fix in threaded builds: the system can now be suspended and
5634 resumed by shell job control with minimal disruption.
5635 * bug fixes in times and timezones >2038AD
5636 * better handling of "where is GNU make?" problem in build scripts
5637 (thanks to Nikodemus Siivola)
5638 * new optimization: inside a named function any reference to a
5639 function with the same name is considered to be a self-reference;
5640 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
5641 optimization quality.
5642 * new optimization on x86: logical functions and + now have
5643 optimized (UNSIGNED-BYTE 32) versions, which are automatically
5644 used when the result is truncated to 32 bits.
5645 * VALUES declaration is partially enabled.
5646 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
5647 * fixed some bugs revealed by Paul Dietz' test suite:
5648 ** The system now obeys the constraint imposed by
5649 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
5650 types form a lattice under type intersection.
5651 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
5652 ** ASSOC now ignores NIL elements in an alist.
5653 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
5654 and (1+ MOST-POSITIVE-FIXNUM) answers.
5655 ** The addition of a method with invalid qualifiers to a generic
5656 function does not cause an error to be signalled immediately;
5657 a warning is signalled, and the error is generated only on
5658 calling the generic function.
5659 * changed .fasl file version number, in part to add type codes for
5660 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
5661 obscure ANSI requirements
5663 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
5664 * fixed bug 148: failure to inline-expand a local function left
5665 garbage, confusing the compiler.
5666 * fixed bugs 3cd: structure slot readers perform type check if the
5667 slot can have an invalid value (i.e. it is either not initialized
5668 or can be written with a less specific slot writer).
5669 * bug fix: the compiler now traps array references to elements off
5670 the end of an array; previously, the bounds checking in some
5671 circumstances could go off-by-one.
5672 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
5674 * type declarations for array element types now obey the description
5675 on the CLHS page "Declaration TYPE", as per discussions on
5676 sbcl-help around 2003-05-08. This means that a declaration
5677 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
5678 declaration, all references to BAR will be asserted or assumed
5679 (with THE, so dependent on compiler policy) to involve objects of
5680 type FOO. Note that no such declaration is implied in
5681 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
5682 * declared types of functions from the "Conditions"
5683 chapter. (reported by Paul Dietz)
5684 * bug fix: CERROR accepts a function as its first argument.
5685 * bug fix: NTH an NTHCDR accept a bignum as index
5686 arguments. (reported by Adam Warner)
5687 * optimization: character compare routines now optimize comparing
5688 against a constant character. (reported by Gilbert Baumann)
5689 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
5690 argument now works properly on the MIPS platform.
5691 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
5692 * repeated evaluation of the same DEFSTRUCT, a slot of which is
5693 declared to have a functional type, does not cause an error
5695 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
5696 many :DEFAULT-INITARGS. (reported by Istvan Marko)
5697 * fixed bug: if last continuation of a deleted block has a
5698 destination, this destination should be deleted too. (reported by
5700 * fixed a bug in the bootstrap process: the host compiler's values
5701 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
5702 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
5703 test case from Patrik Nordebo)
5704 * improved the ability of the disassembler on the PPC platform to
5705 provide helpful disassembly notes.
5706 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
5707 the class in more cases than previously.
5708 * bug fix: FILE-POSITION now understands :START and :END for
5709 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
5710 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
5711 8) data. (thanks to David Lichteblau)
5712 * bug fix: it is possible to add a method to a generic function
5713 without lambda list.
5714 * bug fix: reader failed to signal END-OF-FILE inside an
5715 object representation. (reported by Nikodemus Siivola)
5716 * fixed some bugs revealed by Paul Dietz' test suite:
5717 ** LAST and [N]BUTLAST should accept a bignum.
5718 ** condition slot accessors are methods.
5719 ** (VECTOR NIL) is a subtype of STRING.
5721 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
5722 * minor incompatible change: some nonsensical specialized lambda
5723 lists (used in DEFMETHOD) which were previously ignored now signal
5725 * minor incompatible change: the system is now aware of the types of
5726 variables in the COMMON-LISP package, and will signal errors for
5727 most violations of these type constraints (where previously they
5728 were silently accepted).
5729 * minor incompatible change: COMPILE-FILE now uses the freedom
5730 afforded (ANSI 3.2.2.3) to use derived function types for
5731 functions defined in the same file. This also permits the system
5732 to warn on static type mismatches and function
5733 redefinition. (Currently it does not work with high DEBUG level.)
5734 * minor incompatible change: VALUES declaration is disabled.
5735 * When issuing notes, the compiler now signals a condition of type
5736 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
5737 restart for use in user handlers. It is expected that the
5738 COMPILER-NOTE condition will eventually become a condition
5739 supertype to a hierarchy of note types, which will then be
5740 handleable in a similar fashion. However, at the moment, no such
5741 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
5742 but it's an implementation detail, not a classification for the
5744 * Changes in type checking closed the following bugs:
5745 ** type checking of unused values (192b, 194d, 203);
5746 ** template selection based on unsafe type assertions (192c, 236);
5747 ** type checking in branches (194bc).
5748 * A short form of VALUES type specifier has ANSI meaning (it has
5749 increased the number of situations when SBCL cannot perform type
5751 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5752 keywords or constants is permissible.
5753 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5754 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5755 classes. (thanks to Antonio Martinez)
5756 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5757 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5758 argument to a pretty-print stream. Instead, it leaves any such
5759 operations to DESCRIBE-OBJECT methods.
5760 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5762 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5763 lambda lists. (thanks to David Lichteblau)
5764 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5765 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5766 (thanks to Gerd Moellmann)
5767 * fixed bug 246: increased compilation speed of long
5768 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5770 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5772 * DEFCONSTANT now throws a condition of type
5773 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5774 constant to a non-EQL value; CONTINUE and ABORT restarts
5775 respectively change and preserve the value.
5776 * fixed bug 63: The code walker, part of the implementation of CLOS,
5777 is now better at handling symbol macros.
5778 * bug fix: There is no longer an internal implementation type named
5779 CL:LENGTH. (reported by Raymond Toy)
5780 * bug fix: In macro-like defining macros/special operators the
5781 implicit block does not enclose the lambda list.
5782 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5783 enclosed in parentheses) are not suitable as type specifiers, and
5784 their use properly signals an error now.
5785 * bug fix: An argument count mismatch for a type specifier in code
5786 being compiled no longer causes an unhandled error at compile
5787 time, but signals a compile-time warning.
5788 * fixed simple vector readable printing
5789 * bug fix: DESCRIBE takes more care over whether the class
5790 precedence list slot of a class is bound before accessing it.
5791 (reported by Markus Krummenacker)
5792 * bug fix: FORMATTER can successfully compile pretty-printer format
5793 strings which use variants of the ~* directive inside.
5794 * bug fix: SEARCH now applies its TEST predicate to the elements of
5795 the arguments in the correct order. (thanks to Wolfhard Buss)
5796 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5797 in type inference. (thanks to Robert E. Brown)
5798 * bug fix: Reading in symbols with an explicit package name of ""
5799 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5800 * fixed some bugs revealed by Paul Dietz' test suite:
5801 ** NIL is now allowed as a structure slot name.
5802 ** Arbitrary numbers, not just REALs, are allowed in certain
5803 circumstances in LOOP for-as-arithmetic clauses.
5804 ** Multiple class redefinitions before slot access no longer
5805 causes a type error.
5806 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5807 association between the name and a class.
5808 ** Generic functions with non-standard method-combination and over
5809 five methods all of which return constants no longer return NIL
5810 after the first few invocations. (thanks to Gerd Moellmann)
5811 ** CALL-NEXT-METHOD with no arguments now passes the original
5812 values of the arguments, even in the presence of assignment.
5813 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5815 ** DISASSEMBLE works with closures and funcallable instances.
5816 ** ADD-METHOD now returns the generic function, not the new method.
5817 ** FIND-METHOD signals an error if the lengths of the specializers
5818 is incompatible with the generic function, even if the ERRORP
5820 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5821 which its argument is a member.
5822 ** DEFCLASS only redefines the class named by its class-name
5823 argument if that name is the proper name of the class;
5824 otherwise, it creates a new class.
5825 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5826 of the UNBOUND-SLOT condition to the name of the slot.
5827 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5828 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5829 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5830 SLOT-MAKUNBOUND in the specified fashion.
5832 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5833 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5834 cross-compilation host. As a consequence, we can now bootstrap our
5835 way up to SBCL starting with a bare gcc toolchain and human-readable
5836 source code (first the source to CLISP, then the source to SBCL).
5837 * A contributed module containing a partial implementation of the
5838 simple-streams interface has been included. (thanks to Rudi
5840 * A contributed module implementing the RFC1321 Message Digest
5841 Algorithm, known as MD5, has been included.
5842 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5843 no longer has any effect, as the code controlled by this feature
5844 has been deleted. (As far as we know, no-one has ever built using
5845 this feature, and its semantics were confused in any case).
5846 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5847 work on conditions (as required by the ANSI specification),
5848 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5849 expected behaviour on conditions. Users should note, however,
5850 that such behaviour is not required by the ANSI specification,
5851 and so use of this behaviour may render their code unportable.
5852 * fixed some bugs revealed by Paul Dietz' test suite:
5853 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5855 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5856 ** SXHASH on condition objects no longer returns NIL.
5857 ** :ALLOCATION :CLASS slots are better treated; their values are
5858 updated on class redefinition, and initforms inherited from
5859 superclasses are applied.
5860 ** REMOVE-METHOD returns its generic function argument even when
5861 no method was removed.
5862 ** SHARED-INITIALIZE now initializes the values of the requested
5863 slots, including those with :ALLOCATION :CLASS.
5864 ** ALLOCATE-INSTANCE now works on structure classes defined via
5865 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5867 ** SLOT-EXISTS-P now works on conditions, as well as structures
5869 ** MAKE-LOAD-FORM now has the required methods on
5870 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5871 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5872 keyword, and now implements the SLOT-NAMES argument.
5873 ** methods with &OPTIONAL arguments no longer allow too many
5874 arguments to be passed in the call without error.
5875 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5876 option is consistent with the required arguments of the generic
5877 function lambda list.
5878 * bug fix: REQUIRE accepts a string designator. (Thanks to
5880 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5881 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5882 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5883 * bug fix: The compiler now checks for duplicated variables in macro
5885 * bug fix: SETQ on globals returns the correct value.
5886 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5887 not a COMPILER-ERROR (followed by some other strange error on
5888 choosing the CONTINUE restart).
5889 * bug fix: make.sh and friends are now more consistent in the way that
5890 they look for GNU "make".
5892 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5893 * experimental native threads support (on x86 Linux >=2.4 only).
5894 This is not compiled in by default: you need to add :SB-THREAD to
5895 the target features. See the "Beyond ANSI" chapter of the manual
5897 * fix for longstanding nonANSIism: The old distinction between
5898 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5899 The return value from CL:FIND-CLASS is now a CLOS class, and
5900 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5901 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5902 * An interface to the MetaObject Protocol, as described in Kiczales,
5903 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5904 MIT Press, 1991, is available from the SB-MOP package.
5905 * incompatible change: the SB-PCL package should now be considered
5906 a private implementation detail, and no longer a semi-private MOP
5908 * minor incompatible change: due to rearrangement for threads, the
5909 control stack and binding stack are now allocated at arbitrary
5910 addresses instead of being hardcoded per-port. Users affected by
5911 this probably have to be doing advanced things with shared
5912 libraries, and will know who they are.
5913 * minor incompatible change: Previously, all --eval forms used were
5914 processed with READ before any of them were processed with EVAL.
5915 Now each --eval form is processed with both READ and EVAL before
5916 the next --eval form is processed. (Thus package operations like
5917 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5918 work as the user might reasonably expect.)
5919 * minor incompatible change: *STANDARD-INPUT* is now only an
5920 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5922 * minor incompatible change: Y-OR-N-P is now character-oriented,
5923 not line oriented. Also, YES-OR-NO-P now works without errors.
5924 (thanks to Antonio Martinez)
5925 * sb-aclrepl module improvements: an integrated inspector, added
5926 repl features, and a bug fix to :trace command.
5927 * Known functions, which cannot be open coded by the backend, are
5928 considered to be able to check types of their arguments. (fixing
5929 a bug report by Nathan J. Froyd)
5930 * fixed a bug in computing method discriminating functions: It is
5931 now possible to define methods specialized on classes which have
5932 forward-referenced superclasses. (thanks to Gerd Moellmann)
5933 * fixed evaluation order in optional entries (reported by Gilbert
5935 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5936 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5937 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5938 required-by-AMOP NAME argument, as well as CLASS and
5939 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5940 * fixed bug 20: DEFMETHOD can define methods using names that are
5941 not the proper names of classes to designate class specializers.
5942 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5943 Unix file descriptors, instead of blowing up. (thanks to Antonio
5945 * Garbage collection refactoring: user-visible change is that a
5946 call to the GC function during WITHOUT-GCING will not do garbage
5947 collection until the end of the WITHOUT-GCING. If you were doing
5948 this you were probably losing anyway.
5949 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5950 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5951 TYPEP the latter but not the former.
5952 * The compiler issues a full WARNING for calls to undefined functions
5953 with names from the CL package.
5954 * MAP-INTO for a vector destination is open coded. (reported by
5955 Brian Downing on c.l.l)
5956 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5957 documentation string.
5958 * fixed some bugs revealed by Paul Dietz' test suite:
5959 ** COPY-ALIST now signals an error if its argument is a dotted
5961 ** Condition slots are now accessed more correctly in the presence
5962 of multiple initargs for a given slot.
5963 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5964 exclude restarts of the same name associated with a different
5966 ** DEFCLASS of forward-referenced classes with another
5967 forward-referenced class in the superclasses list no longer
5969 ** Condition slots are now initialized once each, not multiple
5970 times. (thanks to Gerd Moellmann)
5971 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5973 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5974 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5975 arguments contain duplicated elements.
5976 ** RESTART-CASE understands local macros.
5977 ** RESTART-CASE associates exactly its own restarts with a condition.
5978 ** ENDP in safe mode checks its argument to be of type LIST.
5979 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5980 in question is unbound.
5981 ** Optimized MAKE-INSTANCE functions no longer cause internal
5982 assertion failures in the presence of duplicate initargs.
5983 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5984 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5985 propagated even in the ctor optimized implementation of
5987 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5989 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5990 * a better implementation of SXHASH on (simple) bit vectors,
5991 measured both in execution speed and in distribution of results
5992 over the positive fixnums, has been installed. Likewise, a better
5993 implementation of EQUAL for simple bit vectors is now available.
5994 * fixed CEILING optimization for a divisor of form 2^k.
5995 * fixed bug 240 (emitting extra style warnings "using the lexical
5996 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5997 by Antonio Martinez)
5998 * fixed SXHASH, giving different results for NIL depending on type
5999 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
6000 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
6001 variable. (found by Rolf Wester)
6002 * SBCL does not ignore type declarations for special
6003 variables. (reported by rif on c.l.l 2003-03-05)
6004 * some bug fixes in contrib/sb-aclrepl/
6005 * fixed some bugs revealed by Paul Dietz' test suite:
6006 ** a bug in the CONS type specifier, whereby the CAR and CDR
6007 types got intertwined, has been fixed;
6008 ** the type system is now able to reason about the interaction
6009 between INTEGER and RATIO types more completely;
6010 ** APPEND, [N]REVERSE and NRECONC check that those their
6011 arguments, which must be proper lists, are really so;
6012 ** An array specialized to be unable to hold elements has been
6013 implemented, as required -- yes, really -- by ANSI;
6014 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
6015 on malformed property lists;
6017 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
6018 * incompatible packaging change: in line with Unix convention,
6019 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
6020 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
6021 * REQUIRE and PROVIDE are now optionally capable of doing something
6022 useful. See the documentation string for REQUIRE.
6023 * infrastructure for a managed SBCL contrib system: contributed
6024 modules in this release include:
6025 ** the ASDF system definition facility;
6026 ** an interface to the BSD Sockets API;
6027 ** an ACL-like convenience interface to the repl;
6028 (thanks to Kevin Rosenberg)
6029 ** an implementation of ROTATE-BYTE, with efficient implementation
6031 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
6032 gives a closer approximation to the right answer than previously.
6033 (thanks to Raymond Toy)
6034 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
6035 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
6036 optional environment arguments, as required by ANSI.
6037 * fixed bugs in other functions taking environment objects, allowing
6038 calls with an explicit NIL environment argument to be compiled
6040 * fixed bug 228: primary return values from
6041 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
6042 COMPILE or FUNCTION.
6043 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
6044 :TYPE will no longer signal errors on innocuous objects.
6045 * fixed bug 231b: SETQ is better at respecting type declarations in
6046 the lexical environment.
6047 * fixed a bug in DEFCLASS: classes named by symbols with no or
6048 unprintable packages can now be defined.
6049 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
6050 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
6051 * fixed compiler failure related to checking types of functions.
6052 (reported by Robert E. Brown)
6053 * the compiler is now much more consistent in its error-checking
6054 treatment of bounding index arguments to sequence functions: in
6055 (SAFETY 3) code, errors will be signalled in almost all cases if
6056 invalid sequence bounding indices are passed to functions defined
6057 by ANSI to operate on sequences.
6058 * fixed a bug in the build procedure: documentation of SBCL-specific
6059 packages is now preserved and available in the final Lisp image.
6060 * lifted FDEFINITION lookup out of loops in the implementation of
6061 many list operations. (thanks to Robert E. Brown)
6062 * fixed a bug in the reader: the #n# reader macro now works for
6063 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
6064 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
6065 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
6066 E. Brown and Tony Martinez respectively)
6067 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
6068 SLOT-BOUNDP: in particular, it is now able to optimize them much
6069 better, and is now not vulnerable to having packages renamed.
6070 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
6071 always called when a slot is not present in an instance. (thanks
6073 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
6074 longer signal an error on unreading a character following EOF on
6075 the previous constituent stream. (thanks to Tony Martinez)
6076 * fixed some bugs revealed by Paul Dietz' test suite:
6077 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
6078 not just nonnegative fixnums;
6079 ** the logical bit-array operators such as BIT-AND now accept an
6080 explicit NIL for their "opt-arg" argument (to indicate a
6081 freshly-consed result bit-array);
6082 ** ELT now signals an error on an invalid sequence index in safe
6084 ** the type system is now cleverer about negations of numeric
6085 types, and consequently understands the BIGNUM and RATIO types
6087 ** the type system is now cleverer about the interaction between
6088 INTEGER and RATIO types: while bugs still remain, many more
6089 cases are accurately computed;
6090 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
6091 if it is in the last clause;
6092 ** CONSTANTLY now correctly returns a side-effect-free function in
6094 ** DECLARE is no longer treated as a special-operator; in
6095 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
6096 * incremented fasl file version number due to the change in the
6097 DEFSTRUCT-SLOT-DESCRIPTION structure.
6099 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
6100 * minor incompatible change: code processed by the "interpreter" or
6101 EVAL now has a compilation optimization policy of (DEBUG 2)
6102 (changed from (DEBUG 1)) to improve debuggability of interactive
6103 development, and to allow the use of the debug RETURN command in
6105 * an experimental implementation of the RETURN command for the
6106 debugger has been included. (thanks to Frederik Kuivinen)
6107 * fixed bug 62: constraints were not propagated into a loop.
6108 * fixed bug in embedded calls of SORT (reported and investigated by
6110 * fixed some bugs revealed by Paul Dietz' test suite:
6111 ** printing and reading of arrays with some dimensions having
6112 length 0 (thanks to Gerd Moellmann);
6113 ** BOA constructor with &AUX argument without a default value does
6114 not cause a type error;
6115 ** CONSTANTP now returns true for all self-evaluating objects.
6117 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
6118 * fixed bug 127: DEFSTRUCT now does not clobber old structure
6119 accessors that are related by inheritance, as specified in the
6120 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
6121 Valtteri Vuorikoski)
6122 * The compiler is now able to inline functions that were defined in
6123 a complex lexical environment (e.g. inside a MACROLET).
6124 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
6126 * Support for the upcoming FreeBSD-5.0 release has been included.
6127 (thanks to Dag-Erling Smorgrav)
6128 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
6129 effect when it is not in a toplevel context.
6130 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
6131 stand a better chance of being correct. (thanks to Gerd
6133 * fixed bug in COERCE, which now signals an error on coercing a
6134 rational to a bounded real type which excludes the expected
6136 * The compiler is now able to derive types more accurately from the
6137 COERCE and COMPILE functions.
6138 * fixed bug 223: functional binding is considered to be constant
6139 only for symbols in the CL package.
6140 * fixed bug 231: SETQ did not check the type of a variable being set
6141 (reported by Robert E. Brown)
6142 * A new optimization for MAKE-INSTANCE has been included, fixing
6143 various bugs (including relating to :ALLOCATION :CLASS slots and
6144 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
6146 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
6147 ** As required by ANSI, LOOP now disallows anonymous collection
6148 clauses such as COLLECT I in conjunction with aggregate boolean
6149 clauses such as THEREIS (= I 1);
6150 ** LOOP now signals an error when any variable is reused in the
6151 same loop (including the potentially useful construct analogous
6152 to WITH A = 1 WITH A = (1+ A);
6153 ** IT is only a special loop symbol within the first clause of a
6154 conditional loop clause;
6155 ** LOOP with a typed iteration variable over a hashtable now
6156 signals a type error iff it should.
6157 * fixed some other bugs revealed by Paul Dietz' test suite:
6158 ** FILE-STREAM now names the class previously known as FD-STREAM;
6159 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
6160 argument) no longer signals an error;
6161 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
6162 of the slot symbol, rather than using the current package
6163 ((:CONC-NAME "") continues to intern the slot's name in the
6165 * incremented fasl file version number, because of the incompatible
6166 change to the DEFSTRUCT-DESCRIPTION structure, and again because
6167 of the new implementation of DEFINE-COMPILER-MACRO.
6169 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
6170 * Support for building SBCL for MIPS platforms running in
6171 little-endian mode has now been checked in, and basic
6172 functionality on said platforms verified.
6173 * minor incompatible change: PCL now records the pathname of a file
6174 in which methods and the like are defined, rather than its
6176 * minor incompatible change: TRUENAME now considers the truename of
6177 a file naming a directory to be the pathname with :DIRECTORY
6178 component indicating that directory.
6179 * minor incompatible change: a NAMED clause in the extended form of
6180 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
6181 reason for the previous behaviour is unclear.
6182 * more systematization and improvement of CLOS and MOP conformance
6183 in PCL (thanks to Gerd Moellman and Pierre Mai):
6184 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
6186 ** DEFINE-METHOD-COMBINATION no longer signals an error for
6187 primary methods with no specializers;
6188 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
6190 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
6191 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
6192 FORWARD-REFERENCED-CLASSes; error reporting on
6193 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
6195 ** SXHASH on CLOS instances now uses a slot internal to the
6196 instance to return different numbers on distinct instances,
6197 while preserving the same return value through invocations of
6199 ** DEFMETHOD signals errors when methods with longer incongruent
6200 lambda lists are added to generic functions;
6201 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
6202 CLASS, as specified in AMOP;
6203 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
6204 on the order returned by the primary method for classes of
6205 class STANDARD-CLASS;
6206 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
6207 * fixed some bugs shown by Paul Dietz' test suite:
6208 ** DOLIST puts its body in TAGBODY;
6209 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
6211 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
6212 value producing form;
6213 ** if more variables are given to PROGV than values, extra
6214 variables are bound and made to have no value;
6215 ** NSUBSTITUTE on list arguments gets the right answer with
6217 ** ELT signals an error of type TYPE-ERROR when the index argument
6218 is not a valid sequence index;
6219 ** LOOP signals (at macroexpansion time) an error of type
6220 PROGRAM-ERROR when duplicate variable names are found;
6221 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
6222 ** FUNCALL of special-operators now cause an error of type
6224 ** PSETQ now works as required in the presence of side-effecting
6225 symbol-macro places;
6226 ** NCONC accepts any object as its last argument;
6227 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
6229 ** loop-for-as-package does not require a package to be explicitely
6231 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
6233 * fixed bug 166: compiler preserves "there is a way to go"
6234 invariant when deleting code.
6235 * fixed bug 172: macro lambda lists with required arguments after
6236 &REST arguments now cause an error to be signalled. (thanks to
6238 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
6239 bug. (thanks to Matthew Danish)
6240 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
6242 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
6243 arguments are lexically rebound. (thanks to Gerd Moellmann and
6245 * fixed bug 194: error messages are now more informative when there
6246 is no primary method applicable in a call to a generic
6247 function. (thanks to Gerd Moellmann)
6248 * fixed bug in command line argument checking (thanks to Julian
6250 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
6251 (thanks to Matthew Danish)
6252 * incremented fasl file version number, because of the
6253 SXHASH-related changes in the layout of CLOS data structures
6255 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
6256 * minor incompatible change: The runtime (the Unix executable named
6257 "sbcl") is now much pickier about the .core files it will load.
6258 Essentially it now requires .core files to descend from the same
6259 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
6260 as the runtime does. (The intent is to prevent the crashes which
6261 can occur, and which can even be reported as mysterious failures,
6262 when people patch the sources or change the build parameters
6263 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
6264 sbcl and .core files.)
6265 * fixed bug: VALUES-LIST is no longer optimized away.
6266 * fixed bug 142: The FFI conversion of C string values to Lisp
6267 string values no longer conses excessively. (thanks to Nathan
6268 Froyd porting Raymond Toy's fix to CMU CL)
6269 * began to systematize and improve MOP conformance in PCL (thanks to
6270 Nathan Froyd, Gerd Moellman and Pierre Mai):
6271 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
6273 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
6274 ** FINALIZE-INHERITANCE is now called on class finalization;
6275 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
6276 argument precedence order.
6277 * fixed bug 202: The compiler no longer fails on functions whose
6278 derived types contradict their declared type.
6279 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
6280 so it can be non-toplevel.
6281 * The fasl file version number has changed (because of the new
6282 implementation of DEFMACRO).
6283 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
6284 safe code, that any length requirement by their type-specifier
6285 argument is valid. The exceptions to this are described in bug
6287 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
6288 functions now check the types of their inputs as required by ANSI.
6289 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
6290 introduced symbol is DECLAREd to be SPECIAL.
6291 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
6292 * fixed bug: :COUNT argument to sequence functions may be negative
6293 * fixed bug: body of DO-SYMBOLS may contain declarations
6294 * fixed bug: PUSHNEW now evaluates its arguments from left to right
6295 (reported by Paul F. Dietz, fixed by Gerd Moellman)
6296 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
6297 symbol macro only once
6298 * fixed printing of call frame when argument list is unavailable
6299 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
6300 * compiler no longer signals WARNING on unknown keyword
6303 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
6304 * A beta-quality port to the mips architecture running Linux,
6305 based on the old CMUCL backend, has been made. It has been tested
6306 on a big-endian kernel, and works sufficiently well to be able to
6307 rebuild itself; it has not been tested in little-endian mode.
6308 * fixed an inconsistency between gencgc.c and purify.c which made
6309 dumping/loading .core files unreliable
6310 * fixed bug 120a: The compiler now deals correctly with IFs where
6311 the consequent is the same as the alternative, instead of
6312 misderiving the return type. (thanks to Alexey Dejneka)
6313 * fixed bug 113: Logical pathnames are now dumpable (the logical
6314 host is resolved at load-time, throwing an error if it is not
6316 * fixed bug 174: FORMAT's error message is slightly clearer when a
6317 non-printing character is used in a format directive.
6318 * fixed several bugs in compiler checking of type declarations, i.e.
6319 violations of the Python "declarations are assertions" principle
6320 (thanks to Alexey Dejneka)
6321 * fixed several bugs in PCL's error checking (thanks to Gerd
6323 * fixed bug: printing of FILE-ERROR (thanks to Antonio
6325 * fixed bug in compilation of functions as first class values
6326 (thanks to Antonio Martinez-Shotton)
6327 * The compiler's handling TYPE-ERRORs which it can prove will
6328 inevitably happen at runtime has been cleaned up and corrected
6329 in several ways. (thanks to Alexey Dejneka)
6330 * improved argument type checking for various basic arithmetic
6331 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
6332 lavished on them in the past that they can be compiled in many
6333 ways in different special cases
6334 * fixed bug 181: compiler checks validity of user supplied type
6336 * cleaned up code flushing in optimization: Function calls which
6337 should signal errors for safety purposes (e.g. which ANSI says
6338 should signal errors when their arguments are of incorrect type)
6339 are no longer optimized away.
6340 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
6341 * incremented fasl file version number, because changes in the
6342 implementation of sequence functions like COERCE caused
6343 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
6344 in old inline expansions) to become undefined. (Actually these
6345 changes were later undone, so we might very well be binary
6346 compatible with 0.7.7 after all, but leaving the version number
6347 incremented seemed like the simplest and most conservative
6350 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
6351 * An alpha-quality port to the parisc architecture running Linux,
6352 based on the old CMUCL backend, has been made. This, even more so
6353 than the other backends, should be considered still a work in
6354 progress; known problems include that the Linux kernel in 64-bit
6355 mode does not propagate the correct sigcontext structure to
6356 userspace, and consequently SBCL on a parisc64 kernel will not
6358 * fixed bug 189: The compiler now respects NOTINLINE declarations for
6359 functions declared in FLET and LABELS. (I.e. "LET conversion" is
6360 suppressed.) Also now that the compiler is looking at declarations
6361 in the environment, it checks optimization declarations as well,
6362 and suppresses inlining when (> DEBUG SPEED).
6363 * More fixes have been made to treatment of floating point exception
6364 treatment and other Unix signals. In particular, floating point
6365 exceptions no longer cause Bus errors on the SPARC/Linux platform.
6366 * The detection and handling of control stack exhaustion (infinite
6367 or very deeply nested recursion) has changed. Stack exhaustion
6368 detection is now done by write-protecting pages at the OS level
6369 and applies at all optimization settings; when found, a
6370 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
6371 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
6372 be caught using IGNORE-ERRORS.
6373 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
6374 correctly when transforming recursive LABELS functions to LETs.
6375 (thanks to Alexey Dejneka)
6376 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
6377 that are names of constants or global variables.
6378 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
6379 alien routines with docstrings.
6380 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
6381 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
6383 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
6384 (thanks to Eric Marsden)
6385 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
6386 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
6387 * Bug fix: The SPARC backend can now compile functions involving
6388 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
6389 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
6390 to a functions expecting a PATHNAME-DESIGNATOR.
6391 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
6392 lambda lists. (thanks to Alexey Dejneka)
6393 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
6394 functions so that EXPORTing the name of the class doesn't cause
6395 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
6396 to Antonio Martinez for reporting this)
6397 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
6398 constant-folded without failing an assertion. (thanks to Einar
6399 Floystad Dorum for reporting this)
6400 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
6401 types are now dealt with more correctly by the compiler.
6402 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
6403 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
6404 behaviour analogous to RENAME-FILE. This puts its behaviour more
6405 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
6407 * The fasl file version number has changed again. (because of the
6408 bug fix involving the names of PCL MAKE-INSTANCE functions)
6410 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
6411 * bug fix: Floating point exceptions are treated much more
6412 consistently on the x86/Linux and PPC/Linux platforms.
6413 * Array initialization with :INITIAL-ELEMENT is now much faster for
6414 cases when the compiler cannot open code the array creation, but
6415 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
6416 array accesses have also seen a speed increase.
6417 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
6418 specified. (This was at the root of some bad interactions between
6419 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
6421 * bug fix: Internal error arguments for undefined functions are now
6422 computed correctly on the PPC/Linux platform.
6423 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
6424 Raymond Toy's patch for CMU CL)
6425 * Support for the Solaris 9 operating environment has been included
6426 (thanks to Daniel Merritt)
6427 * A very ugly but hopefully complete draft of the missing FFI chapter
6428 of the manual has been created by reformatting the corresponding
6429 CMU CL manual chapter into (currently very ugly and incoherent)
6430 DocBook and bringing it up to date for SBCL behavior. Thus, the
6431 manual is now essentially complete, at least by my extreme
6432 once-and-only-once standards, whereby it's acceptable to refer to
6433 the doc strings of SB-EXT functions as the primary documentation.
6434 * The fasl file version number has changed again, due to cleanup of
6435 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
6436 is no longer a static symbol.)
6438 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
6439 * SBCL now builds with OpenMCL (version 0.12) as the
6440 cross-compilation host; also, more progress has been made toward
6441 bootstrapping under CLISP.
6442 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
6444 * bug 158 fixed: The compiler can now deal with integer loop
6445 increments different from 1; fixing this turned out also to fix
6447 * bug 169 fixed: no more bogus warnings about using lexical bindings
6448 despite the presence of perfectly good SPECIAL declarations (thanks
6449 to David Lichteblau)
6450 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
6451 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
6452 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
6454 * bug 180 fixed: Method combination specifications no longer ignore
6455 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
6456 * bug fix: Structure type predicate functions now check their argument
6457 count as they should.
6458 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
6459 correctly. (thanks to Pierre Mai)
6460 * minor incompatible change: The --noprogrammer option is deprecated
6461 in favor of the new --disable-debugger option, which is very similar.
6462 (The major difference is that it takes effect at a slightly different
6463 time at startup, causing handling of errors in --sysinit and
6464 --userinit files will be affected differently.) The
6465 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
6466 been added to allow this functionality to be controlled from ordinary
6467 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
6468 maintainers, who might want to run non-interactive scripts to
6469 build SBCL cores which will later be used interactively.)
6470 * minor incompatible change: The LOAD function no longer, when given
6471 a wild pathname to load, loads all files matching that pathname.
6472 Instead, an error of type FILE-ERROR is signalled.
6474 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
6475 * bug 147 fixed: The compiler preserves its block link/count
6476 invariants more correctly now so that it doesn't crash. (thanks
6478 * Dynamic loading of object files in OpenBSD is now supported. (thanks
6480 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
6481 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
6482 no-value-for-this-character as NIL (as specified by ANSI).
6483 * HOST-NAMESTRING on physical pathnames now returns a string that is
6484 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
6485 (thanks to Christophe Rhodes)
6486 * The Alpha port handles icache flushing more correctly. (thanks to
6488 * More progress has been made toward bootstrapping under CLISP. (thanks
6489 to Christophe Rhodes)
6490 * The fasl file format has changed again, because dynamic loading
6491 on OpenBSD (which has non-ELF object files) motivated some cleanups
6492 in the way that foreign symbols are transformed and passed around.
6493 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
6494 is no longer treated as whitespace by the reader, but instead as
6495 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
6496 |A
\x7fB|, instead of A as it used to.
6498 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
6499 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
6500 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
6501 * SBCL now runs on the PPC archtiecture under Linux. It actually did
6502 this as of 0.7.1.45, but was left out of the previous news section
6503 (thanks to Dan Barlow)
6504 * SBCL now runs on the Solaris operating system on SPARC architectures
6505 (thanks to Christophe Rhodes's port of the CMUCL runtime)
6506 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
6507 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
6508 * SPARC backend cleanups, allowing builds of cores optimized for V8
6509 and V9 SPARCS, and also emission of code targeted to a particular
6510 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
6512 * SBCL is closer to bootstrapping under CLISP, thanks to various
6513 fixes by Christophe Rhodes.
6514 * The fasl file format has changed again, to allow the compiler's
6515 INFO database to support symbol macros.
6516 * The user manual (in doc/) is formatted into HTML more nicely.
6517 (thanks to coreythomas)
6518 * The system is smarter about SUBTYPEP relationships, especially
6519 those involving NOT types (including types such as ATOM which are
6520 represented internally using NOT types). Thus SUBTYPEP is less
6521 likely to return (VALUES NIL NIL) in general, and in particular
6522 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
6524 * The fasl file format has changed again, because the internal
6525 representation of types now includes a new slot to support the new
6526 SUBTYPEP-of-NOT-types logic.
6527 * (not a change in the main branch of SBCL, but a related prototype
6528 which can hopefully be merged into the main branch of SBCL in the
6529 future:) Brian Spilsbury has produced a Unicode-enabled variant of
6530 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
6531 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
6532 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
6533 dispatch macro character combinations. (thanks to Alexey Dejneka)
6534 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
6535 that superficially look like logical namestrings correctly.
6536 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
6538 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
6539 default supplied-p) for &optional and &key arguments. (thanks to
6542 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
6543 * incompatible change: The compiler is now less aggressive about
6544 tail call optimization, doing it only when (> SPACE DEBUG) or
6545 (> SPEED DEBUG). (This is an incompatible change because there are
6546 programs which relied on the old CMU-CL-style behavior to optimize
6547 away their unbounded recursion which will now die of stack overflow.)
6548 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
6549 for non-GENCGC systems has been increased to 20M (since that
6550 seems much closer to the likely performance optimum for modern
6551 systems than the old 4M value was)
6552 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
6553 and *DEBUG-PRINT-LEVEL*
6554 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
6555 of CMU CL's support for SPARC, and various endianness and other
6556 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
6557 * new syntactic sugar for the Unix command line: --load foo.bar is now
6558 an alternate notation for --eval '(load "foo.bar")'.
6560 ** The system now detects stack overflow and handles it gracefully,
6561 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
6562 optimization settings. (This is a good thing in general, and
6563 its introduction in this version should be particularly timely
6564 for anyone whose code fails because of suppression of tail
6566 ** The system now hunts for the C variable "environ" in a more
6567 devious way, to avoid segfaults when the C library version differs
6568 between compile time and run time. (thanks to Christophe Rhodes)
6569 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
6570 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
6571 ** The compiler no longer issues bogus style warnings for undefined
6572 classes in the same source file as the DEFCLASSes which defined
6573 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
6575 ** fixes in CONDITION class precedence list for undefined function
6576 errors (thanks to Alexei Dejneka)
6577 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
6578 correctly. (thanks to Dan Barlow)
6579 ** portability fixes aiming at bootstrapping under CLISP (thanks
6580 to Dave McDonald and Christophe Rhodes)
6581 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
6582 ** fixes in type translation and and type inference (thanks to
6584 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
6585 ** various fixes in the new ports (thanks to Dan Barlow)
6586 * several changes related to debugging:
6587 ** suppression of tail recursion, as noted above
6588 ** stack overflow detection, as noted above
6589 ** The default implementation of TRACE has changed. :ENCAPSULATE T
6590 is now the default. (For some time encapsulation has been more
6591 reliable than the breakpoint-based :ENCAPSULATE NIL
6592 implementation, at least on X86 systems; and I just noticed that
6593 encapsulation also seems closer to the spirit of the ANSI
6596 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
6598 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
6599 up properly again. (There was a packaging bug in 0.7.0 which
6600 left their definitions in SB-SYS::LOAD-FOREIGN and
6601 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
6602 vital for most things which interface to C-level interfaces,
6603 like extensions working with sockets or databases or
6604 Perl-compatible regexes or whatever, and the need to fix
6605 this bug is the main reason that 0.7.1 was released so
6607 ** DEFGENERIC is now choosier about the methods it redefines, so that
6608 reLOADing a previously-LOADed file containing DEFGENERICs does
6609 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
6610 cycle now works as it should. (thanks to Alexey Dejneka)
6611 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
6612 fixed by Christophe Rhodes. (He actually submitted this patch
6613 months ago, and I delayed until after 0.7.0.)
6614 ** Bug 111 (internal compiler confusion about runtime checks on
6615 FUNCTION types) was fixed by Alexey Dejneka.
6616 * Some internal cleanups (getting rid of variables which aren't
6617 needed now that the byte interpreter is gone) caused the fasl
6618 file format number to change again.
6620 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
6621 * major incompatible change: The default fasl file extension, i.e. the
6622 default extension for files produced by COMPILE-FILE, has changed
6623 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
6625 ** There are many changes in the implementation of the compiler.
6626 SBCL is now essentially a compiler-only implementation of ANSI
6627 Common Lisp. EVAL still "interprets" a few special cases, but
6628 almost all the interesting cases are handled by creating
6629 a LAMBDA expression, calling COMPILE on it, then calling
6630 FUNCALL on the result.
6631 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
6632 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
6633 Since the code is newer, there might still be some new bugs
6634 (though not as many as before Martin Atzmueller's fixes:-). But
6635 the new code is substantially simpler and clearer, and hopefully
6636 any remaining bugs will be simpler, less fundamental, and more
6637 fixable then the bugs in the old code.
6638 ** The revised compiler is still a little unsteady on its feet.
6640 *** The debugging information it produces (particularly the names
6641 of FUNCTION objects) is sometimes much less useful than what
6642 the old compiler produced.
6643 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
6644 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
6645 within a MACROLET) has been temporarily weakened.
6646 ** There are new compiler optimizations for various functions:
6647 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
6648 FIND-IF-NOT, POSITION-IF-NOT, and FILL
6649 *** the math functions TRUNCATE, FLOOR, and CEILING
6650 *** the function-of-all-trades COERCE
6651 Mostly these should be transparent, but there's one
6652 potentially-annoying problem (bug 117): when the compiler
6653 inline-expands a function and does type analysis on the result,
6654 it can create control paths which have type mismatches, and
6655 when it can't prove that those control paths aren't taken,
6656 it will issue WARNINGs about the type mismatches. This is
6657 a particular problem in practice for the new sequence functions.
6658 It's not clear how this should be fixed, and for now, a
6659 workaround is given in the entry for 117 in the BUGS file.
6660 ** (Because of the interaction between the two previous items --
6661 occasional inlining problems and new inline expansions -- some
6662 of the new sequence function optimizations won't really kick in
6663 completely until debugging information, and then inlining, are
6664 straightened out in some future version.)
6665 * minor incompatible changes:
6666 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
6667 DIRECTORY no longer implicitly promotes NIL slots of its
6668 pathname argument to :WILD. In particular, when you ask for the
6669 contents of a directory (which you used to be able to do without
6670 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
6671 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
6672 ** changes in behavior that ANSI explicitly defines to be
6673 implementation dependent:
6674 *** The new compiler-only implementation still conforms with ANSI,
6675 but acts a little different than before. Besides the obvious
6676 changes in performance tradeoffs (that the cost per form passed
6677 to EVAL has gone up, and the cost per form executed by EVAL
6678 has gone down), the behavior of the system changes a little
6679 because there are no longer any interpreted function objects.
6680 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
6681 e.g. doing COMPILE on the output of interactive DEFUN is
6683 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
6685 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
6686 has changed from (:CL) to NIL.
6687 *** The CHAR-NAME of unprintable ASCII characters which, unlike
6688 e.g. #\Newline and #\Tab, don't have names specified in the
6689 ANSI Common Lisp standard, is now based on their ASCII symbolic
6690 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
6691 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
6692 are no longer used for output.
6693 ** changes in internal implementation constants:
6694 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
6695 4 million. (If your application spends a lot of time GCing and
6696 you have a lot of RAM, you might want to experiment with
6697 increasing it even more.)
6698 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
6699 However, almost all old code should still continue to work without
6700 immediate update, as SB-C-CALL is now a (deprecated) nickname
6702 ** Old operator names in the style DEF-FOO are now deprecated in
6703 favor of new corresponding names DEFINE-FOO, for consistency with
6704 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
6705 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
6706 internal symbols, but a few supported extensions like
6707 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
6708 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
6709 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
6710 etc. as you get deeper into recursive calls to the debugger
6711 command loop, instead of the old "5]", "5]]", "5]]]"
6712 sequence. (I was motivated to do this when squabbles between
6713 ILISP and SBCL left me very deeply nested in the debugger. In the
6714 short term, this change will probably provoke more ILISP/SBCL
6715 squabbles, but hopefully it will be an improvement in the long run.)
6716 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
6717 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
6718 function, since declaiming return types involving aliens is
6719 (1) annoyingly messy to do by hand and (2) vital to efficient
6720 compilation of code which calls such functions.
6721 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
6722 longer reexported by the SB-EXT package. They're solely useful
6723 for alien code, so it seems more logical that you should get
6724 them from the SB-ALIEN package, not in SB-EXT.
6725 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
6726 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
6727 features. Instead, the code that they used to control is always
6728 built into the system.
6729 * many other bug fixes
6730 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
6731 advantage of the new EVAL-WHEN stuff and to clean them up in
6732 general, and they are now more ANSI-compliant in a number of
6733 ways. Martin Atzmueller is responsible for a lot of this.
6734 ** Besides the cleanups discussed above, Martin Atzmueller fixed
6736 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
6737 *** correct ERROR type for various file operations
6738 *** some fixes for Lisp streams
6739 *** DEFMETHOD syntax checking
6740 *** changing old weird representation of debug information as
6741 strings (which, among their other deficiencies, don't transform
6742 correctly when you rename packages, and don't change their
6743 print representation when you change things like *PACKAGE*
6744 and *PRINT-LENGTH*) to symbols and lists of symbols
6745 He also made several improvements and fixed several bugs in DESCRIBE.
6746 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6748 *** misbehavior of WRITE-STRING/WRITE-LINE
6749 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6750 and several other LOOP problems as well
6751 *** DIRECTORY when similar filenames are present
6752 *** DEFGENERIC with :METHOD options
6753 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6754 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6755 *** argument ordering in FIND with :TEST option
6756 *** mishandled package designator argument in APROPOS-LIST
6757 *** various problems in the backquote readmacro
6758 *** a bug in APROPOS
6759 *** probably some others that I'm not describing very well here,
6760 since the CVS log documents them by reference to sbcl-devel
6761 messages, and the SourceForge archives aren't working well.:-(
6762 ** Dan Barlow improved the Alpha port (and is making progress on the
6763 PPC port, for those of you who think different).
6764 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6765 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6766 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6767 continues to work on the SPARC port (for those of you in a position
6768 to look down upon our little PC-compatible boxes from a great height).
6769 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6770 and uses that copy, rather than the current dynamic value, when
6771 it's trying to decide whether to truncate output. Thus e.g.
6772 (let ((*print-lines* 50))
6773 (pprint-logical-block (stream nil)
6775 (let ((*print-lines* 8))
6776 (print (aref possiblybigthings i) stream)))))
6777 should now truncate the logical block only at 50 lines, instead of
6778 often truncating it at 8 lines, as it did before.
6779 * The doc/cmucl/ directory, containing old CMU CL documentation
6780 from the time of the fork, is no longer part of the base system.
6781 SourceForge has shut down its anonymous FTP service, and with it
6782 my original plan for distributing the old CMU CL documentation
6783 there. For now, if you need these files you can download an old
6784 SBCL source release and extract them from it.
6785 * The fasl file version number changed again, for dozens of reasons,
6786 some of which are apparent above.
6788 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6789 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6790 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6791 patch, so that DISASSEMBLE output is much nicer.
6792 * The code in the SB-PROFILE package now seems reasonably stable.
6793 I still haven't decided what the final interface should look like
6794 (I'd like PROFILE to interact cleanly with TRACE, since both
6795 facilities use function encapsulation) but if you have a need
6796 for profiling now, you can probably use it successfully with
6797 the current CMU-CL-style interface.
6798 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6799 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6800 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6801 link now returns the dangling link itself, and for similar
6802 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6803 link itself. (In these cases the old code signalled an error and
6804 looped endlessly, respectively.) Thus, DIRECTORY now works even
6805 in the presence of dangling and cyclic symbolic links.
6806 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6807 is now a supported extension again, since the consensus on
6808 sbcl-devel was that it can be useful for ordinary development
6809 work, not just for debugging SBCL itself.
6810 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6811 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6812 that currently-defined functions might be redefined later with
6813 different return types.
6814 * Hash tables can be printed readably, as inspired by CMU CL code
6815 of Eric Marsden and SBCL code of Martin Atzmueller.
6816 * better error handling in CLOS method combination, thanks to
6817 Martin Atzmueller porting Pierre Mai's CMU CL patches
6818 * more overflow fixes for >16Mbyte I/O buffers
6819 * A bug in READ has been fixed, so that now a single Ctrl-D
6820 character suffices to cause end-of-file on character streams.
6821 In particular, now you only need one Ctrl-D at the command
6822 line (not two) to exit SBCL.
6823 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6825 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6826 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6827 does the right thing.
6828 * The implementation of some type tests, especially for CONDITION
6829 types, is now tidier and maybe faster, due to CMU CL code
6830 originally by Douglas Crosher, ported by Martin Atzmueller.
6831 * Some math functions have been fixed, and there are new
6832 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6833 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6834 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6835 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6836 likely to be built into sbcl-0.7.0.)
6837 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6838 CL, ported to SBCL by Martin Atzmueller)
6839 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6840 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6841 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6842 * There's a new slam.sh hack to shorten the edit/compile/debug
6843 cycle for low-level changes to SBCL itself, and a new
6844 :SB-AFTER-XC-CORE target feature to control the generation of
6845 the after-xc.core file needed by slam.sh.
6846 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6847 COMPILE-FILE is no longer supported, so that now every function
6848 gets an entry point, so that block compilation looks a little
6849 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6850 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6851 returns the number of bytes consed since the system started,
6852 rather than the number consed since the first time the function
6853 was called. (The new definition parallels ANSI functions like
6854 CL:GET-INTERNAL-RUN-TIME.)
6855 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6856 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6857 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6858 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6859 * Fasl file version numbers are now independent of the target CPU,
6860 since historically most system changes which required version
6861 number changes have affected all CPUs equally. Similarly,
6862 the byte fasl file version is now equal to the ordinary
6865 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6866 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6867 is no longer recognized. I apologize for this, because it was
6868 listed in SB-EXT as a supported extension, but I found that
6869 its existing behavior was poorly specified, as well as incorrectly
6870 specified, and it looked like too much of a mess to straighten it
6871 out. I have enough on my hands trying to get ANSI stuff to work..
6872 * many patches ported from CMU CL by Martin Atzmueller, with
6873 half a dozen bug fixes in pretty-printing and the debugger, and
6874 half a dozen others elsewhere
6875 * fixed bug 13: Floating point infinities are now supported again.
6876 They might still be a little bit flaky, but thanks to bug reports
6877 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6878 as flaky as they were.
6879 * The --noprogrammer command line option is now supported. (Its
6880 behavior is slightly different in detail from what the old man
6881 page claimed it would do, but it's still appropriate under the
6882 same circumstances that the man page talks about.)
6883 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6884 are now supported, and enabled by default. Thus, the compiler can
6885 handle many floating point and complex operations much less
6886 inefficiently. (Thus e.g. you can implement a complex FFT
6888 * The compiler now detects type mismatches between DECLAIM FTYPE
6889 and DEFUN better, and implements CHECK-TYPE more correctly, and
6890 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6891 thanks to patches from Martin Atzmueller.
6892 * various fixes to make the cross-compiler more portable to
6893 ANSI-conforming-but-different cross-compilation hosts (notably
6894 Lispworks for Windows, following bug reports from Arthur Lemmens)
6895 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6896 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6897 fixed thanks to Pierre Mai's CMU CL patches.
6898 * fixes to keep the system from overflowing internal counters when
6899 it tries to use i/o buffers larger than 16M bytes
6900 * fixed bug 45a: Various internal functions required to support
6901 complex special functions have been merged from CMU CL sources.
6902 (When I was first setting up SBCL, I misunderstood a compile-time
6903 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6904 * improved support for type intersection and union, fixing bug 12
6905 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6906 more obscure bugs as well
6907 * some steps toward byte-compiling non-performance-critical
6908 parts of the system, courtesy of patches from Martin Atzmueller
6909 * Christophe Rhodes has made some debian packages of sbcl at
6910 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6911 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6912 stable, but are nonetheless usable. When he's ready, I'd be happy
6913 to add them to the SourceForge "File Releases" section. (And if
6914 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6915 * new fasl file format version number (because of changes in
6916 internal representation of (OR ..) types to accommodate the new
6917 support for (AND ..) types, among other things)
6919 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6920 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6922 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6924 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6925 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6926 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6927 * DESCRIBE now works on structure objects again.
6928 * Most function call argument type mismatches are now handled as
6929 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6930 know whether the function will be redefined before the call is
6931 executed. (The compiler could flag local calls with full WARNINGs,
6932 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6933 it doesn't keep track of enough information to know whether calls
6934 are local in this sense.)
6935 * Compiler output is now more verbose, with messages truncated
6936 later than before. (There should be some supported way for users
6937 to override the default verbosity, but I haven't decided how to
6938 provide it yet, so this behavior is still controlled by the internal
6939 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6940 src/compiler/ir1util.lisp.)
6941 * Fasl file format version numbers have increased again, because
6942 support for the Gray streams extension changes the layout of the
6943 system's STREAM objects.
6944 * The Gray subclassable streams extension now works, thanks to a
6945 patch from Martin Atzmueller.
6946 * The full LOAD-FOREIGN extension (not just the primitive
6947 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6948 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6949 but like most other programs, it defaults to copying the Unix
6950 environment from the original process instead of starting the
6951 new process in an empty environment.
6952 * Extensions which manipulate the Unix environment now support
6953 an :ENVIRONMENT keyword option which doesn't smash case or
6954 do other bad things. The CMU-CL-style :ENV option is retained
6955 for porting convenience.
6956 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6957 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6959 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6961 * A patch from Martin Atzmueller seems to have solved the SIGINT
6962 problem, and as far as we know, signal-handling now works cleanly.
6963 (If you find any new bugs, please report them!)
6964 * The system no longer defaults Lisp source file names to types
6965 ".l", ".cl", or ".lsp", but only to ".lisp".
6966 * The compiler no longer uses special default file extensions for
6967 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6968 seems to expect a single default extension for all compiled code,
6969 and there's no compelling reason to try to stretch the standard
6970 to allow two different extensions.) Instead, byte-compiled files
6971 default to the same extension as native-compiled files.
6972 * Fasl file format version numbers have increased again, because
6973 a rearrangement of internal implementation packages made some
6974 dumped symbols in old fasl files unreadable in new cores.
6975 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6976 many fewer weird special cases.
6977 * Bug #17 (differing COMPILE-FILE behavior between logical and
6978 physical pathnames) has been fixed, and some related misbehavior too,
6979 thanks to a patch from Martin Atzmueller.
6980 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6981 by Tim Moore, ported to SBCL by Martin Atzmueller.
6982 * Martin Atzmueller fixed several filesystem-related problems,
6983 including bug #36, in part by porting CMU CL patches, which were
6984 written in part by Paul Werkowski.
6985 * More compiler warnings in src/runtime/ are gone, thanks to
6986 more patches from Martin Atzmueller.
6987 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6990 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6992 * DESCRIBE now works on CONDITION objects.
6993 * The debugger now handles errors which arise when trying to print
6994 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6996 * The build system now uses an additional file, customize-target-features.lisp,
6997 to allow local modifications to the target *FEATURES* list. (The point of
6998 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6999 debugging features enabled, without having to worry about propagating it
7000 into everyone's system when I do a "cvs update".) When no
7001 customize-target-features.lisp file exists, the target *FEATURES* list
7002 should be constructed the same way as before.
7003 * fixed bugs in DEFCONSTANT ANSI-compatibility:
7004 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
7005 warn about behavior which is undefined under the ANSI spec. Note: This
7006 is specified by ANSI, but it's not very popular with programmers.
7007 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
7008 macro in the SBCL sources for an example of a workaround which you
7009 might use to make portable ANSI-standard code which does what you want.
7010 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
7011 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
7012 when it's used as a non-toplevel form. (This is required in order
7013 to implement the DEFCONSTANT-EQX macro.)
7014 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
7015 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
7016 funny things, due to bugs in the implementation of EVAL-WHEN
7017 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
7018 non-toplevel DEFCONSTANTs are uncommon.)
7019 * The core file version number and fasl file version number have been
7020 incremented, because the old noncompliant DEFCONSTANT behavior involved
7021 calling functions which no longer exist, and because I also took the
7022 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
7023 * fixed bug 1 (error handling before read-eval-print loop starts), and
7024 redid debugger restarts and related debugger commands somewhat while
7026 ** The QUIT debugger command is gone, since it did something
7027 rather different than the SB-EXT:QUIT command, and since it never
7028 worked properly outside the main toplevel read/eval/print loop.
7029 Invoking the new TOPLEVEL restart provides the same functionality.
7030 ** The GO debugger command is also gone, since you can just invoke
7031 the CONTINUE restart directly instead.
7032 ** The TOP debugger command is also gone, since it's redundant with the
7033 FRAME 0 command, and since it interfered with abbreviations for the
7035 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
7037 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
7038 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
7039 some porting work by Martin Atzmueller)
7040 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
7041 with a boatload of patches which he ported to SBCL. Now that those
7043 ** The system tries to make sure that its low-priority messages
7044 are prefixed by semicolons, to help people who like to use
7045 syntax highlighting in their ILISP buffer. (This patch
7046 was originally due to Raymond Toy.)
7047 ** The system now optimizes INTEGER-LENGTH better, thanks to more
7048 patches originally written by Raymond Toy.
7049 ** The compiler understands coercion between single-value and
7050 multiple-VALUES type expressions better, getting rid of some very
7051 weird behavior, thanks to patches originally by Robert MacLachlan
7052 and Douglas Crosher.
7053 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
7054 lambda lists, thanks to a patch originally by Pierre Mai.
7055 ** The system no longer bogusly warns about "abbreviated type
7057 ** The compiler gets less confused by inlining and RETURN-FROM,
7058 thanks to some patches originally by Tim Moore.
7059 ** The system no longer hangs when dumping circular lists to fasl
7060 files, thanks to a patch originally from Douglas Crosher.
7061 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
7062 undefined function error.
7063 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
7064 in structure slot initforms) for now, documented workaround instead:-|
7065 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
7066 * fixed bug 5: added stubs for various Gray stream functions called
7067 in the not-a-CL:STREAM case, so that even when Gray streams aren't
7068 installed, at least appropriate type errors are generated
7069 * fixed bug 8: better reporting of various PROGRAM-ERRORs
7070 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
7071 consistently in DEFMETHOD forms.
7072 * removed bug 21 from BUGS, since Martin Atzmueller points out that
7073 it doesn't seem to affect SBCL after all
7074 * The C runtime system now builds with better optimization and many
7075 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
7077 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
7079 * The system is now under CVS at SourceForge (instead of the
7080 CVS repository on my home machine).
7081 * The new signal handling code has been tweaked to treat register
7082 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
7083 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
7084 downstream, e.g. in debug-int.lisp, has implicit dependencies
7085 on the unsignedness of integer representation of machine words,
7086 and that caused the system to bomb out with infinite regress
7087 when trying to recover from type errors involving signed values,
7088 e.g. (BUTLAST '(1 2 3) -1).)
7089 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
7090 (This was one of the bugs Peter Van Eynde reported back in July.)
7091 * The system now uses code inspired by Colin Walters' O(N)
7092 implementation of MAP (from the cmucl-imp@cons.org mailing
7093 list, 2 September 2000) when it can't use a DEFTRANSFORM to
7094 inline the MAP operation, and there is more than one
7095 sequence argument to the MAP call (so that it can't just
7096 do ETYPECASE once and for all based on the type of the
7097 single sequence argument). (The old non-inline implementation
7098 of the general M-argument sequence-of-length-N case required
7099 O(M*N*N) time when any of the sequence arguments were LISTs.)
7100 * The QUIT :UNIX-CODE keyword argument has been renamed to
7101 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
7102 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
7104 * Raymond Wiker's patches to port dynamic loading from Linux to
7105 FreeBSD have been added.
7106 * The BUGS file is now more nearly up to date, thanks in large part
7107 to Martin Atzmueller's review of it.
7108 * The debugger now flushes standard output streams before it begins
7109 its output ("debugger invoked" and so forth).
7110 * The core version number and fasl file version number have both
7111 been incremented, because of incompatible changes in the layout
7113 * FINISH-OUTPUT is now called more consistently on QUIT. (It
7114 used to not be called for a saved Lisp image.)
7115 * Martin Atzmueller's version of a patch to fix a compiler crash,
7116 as posted on sbcl-devel 13 September 2000, has been installed.
7117 * Instead of installing Martin Atzmueller's patch for the
7118 compiler transform for SUBSEQ, I deleted the compiler transform,
7119 and transforms for some similar consing operations.
7120 * A bug in signal handling which kept TRACE from working on OpenBSD
7122 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
7123 away by constant folding
7124 * The system now defines its address space constants in one place
7125 (in the Lisp sources), and propagates them automatically elsewhere
7126 (through GENESIS and the sbcl.h file). Therefore, patching the
7127 address map is less unnecessarily tedious and error-prone. The
7128 Lisp names of address space constants have also been systematized.
7129 * CVS tags like dollar-Header-dollar have been removed from
7130 the sources, because they have never saved me trouble and
7131 they've been source of trouble working with patches and other
7132 diff-related operations.
7133 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
7134 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
7136 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
7138 * The system has been ported to OpenBSD.
7139 * The system now compiles with a simple "sh make.sh" on the systems
7140 that it's supported on. I.e., now you no longer need to tweak
7141 text in the target-features.lisp-expr and symlinks in src/runtime/
7142 by hand, the make.sh takes care of it for you.
7143 * The system is no longer so grossly inefficient when compiling code
7144 involving vectors implemented as general (not simple) vectors (VECTOR T),
7145 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
7146 which dares to use the various sequence functions on non-simple
7147 vectors, takes less of a performance hit.
7148 * There is now a primitive type predicate VECTOR-T-P
7149 to test for the (VECTOR T) type, so that e.g.
7150 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
7151 can now be compiled with some semblance of efficiency. (The old code
7152 turned the type declaration into a full call to %TYPEP at runtime!)
7153 * AREF on (VECTOR T) is still not fast, since it's still compiled
7154 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
7155 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
7156 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
7157 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
7158 without making full calls to SUBTYPEP at runtime.
7159 (Some analogous efficiency issues for non-simple vectors specialized to
7160 element types other than T, or for non-simple multidimensional arrays,
7161 have not been addressed. They could almost certainly be handled the
7162 same way if anyone is motivated to do so.)
7163 * The changes in array handling break binary compatibility, so
7164 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
7165 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
7166 instead of (VALUES T T).
7167 * By following the instructions that Dan Barlow posted to sbcl-devel
7168 on 2 July 2000, I was able to enable primitive dynamic object
7169 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
7170 functionality is not implemented (since it calls ld to resolve
7171 library references automatically, requiring RUN-PROGRAM for its
7172 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
7173 try to resolve library references) is now supported.
7174 * The system now flushes the standard output streams when it terminates,
7175 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
7176 them at several other probably-convenient times, e.g. in each pass of
7177 the toplevel read-eval-print loop, and after evaluating a form given
7178 as an "--eval" command-line option. (These changes were motivated by a
7179 discussion of stream flushing issues on cmucl-imp in August 2000.)
7180 * The source transform for TYPEP of array types no longer assumes
7181 that an array whose element type is a not-yet-defined type
7182 is implemented as an array of T, but instead punts, so that the
7183 type will be interpreted at runtime.
7184 * There is now some support for cross-compiling in make.sh: each of
7185 the phases of make.sh has its own script. (This should be transparent
7186 to people doing ordinary, non-cross-compile builds.)
7187 * Since my laptop doesn't have hundreds of megabytes of memory like
7188 my desktop machine, I became more motivated to do some items on
7189 my to-do list in order to reduce the size of the system a little:
7190 ** Arrange for various needed-only-at-cold-init things to be
7191 uninterned after cold init. To support this, those things have
7192 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
7193 symbols with such names are now uninterned after cold init).
7194 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
7195 fasl files for cold load.
7196 ** Remove the old compiler structure pooling code (which used to
7197 be conditional on the target feature :SB-ALLOC) completely.
7198 ** Redo the representation of some data in cold init to be more compact.
7199 (I also looked into supporting byte compiled code at bootstrap time,
7200 which would probably reduce the size of the system a lot, but that
7201 looked too complicated, so I punted for now.)
7202 * The maximum signal nesting depth in the src/runtime/ support code has
7203 been reduced from 4096 to 256. (I don't know any reason for the very
7204 large old value. If the new smaller value turns out to break something,
7205 I'll probably just bump it back up.)
7206 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
7208 * Many, many bugs reported by Peter Van Eynde have been added to
7209 the BUGS list; some have even been fixed.
7210 * While enabling dynamic object file loading, I tried to make the
7211 code easier to understand, renaming various functions and variables
7212 with less ambiguous names, and changing some function calling
7213 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
7214 * While trying to figure out how to do the OpenBSD port, I tried to
7215 clean up some of the code in src/runtime/. In particular, I dropped
7216 support for non-POSIX signal handling, added various comments,
7217 tweaked the code to reduce the number of compilation warnings, and
7218 renamed some files to increase consistency.
7219 * To support the new automatic configuration functionality in make.sh,
7220 the source file target-features.lisp-expr has been replaced with the
7221 source file base-target-features.lisp-expr and the machine-generated
7222 file local-target-features.lisp-expr.
7223 * fixed a stupid quoting error in make.sh so that using CMU CL
7224 "lisp -batch" as cross-compilation host works again
7226 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
7228 * DESCRIBE no longer tries to call itself recursively to describe
7229 bound/fbound values, so that it no longer fails on symbols which are
7230 bound to themselves (like keywords, T, and NIL).
7231 * DESCRIBE now works on generic functions.
7232 * The printer now prints less-screwed-up representations of closures
7233 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
7234 * A private symbol is used instead of the :EMPTY keyword previously
7235 used to mark empty slots in hash tables. Thus
7236 (DEFVAR *HT* (MAKE-HASH-TABLE))
7237 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
7238 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
7239 now does what ANSI says that it should. (You can still get
7240 similar noncompliant behavior if bang on the hash table
7241 implementation with all the symbols you get back from
7242 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
7243 This breaks binary compatibility, since tests for equality to
7244 :EMPTY are wired into things like the macroexpansion of
7245 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
7247 * There's now a minimal placeholder implementation for CL:STEP,
7248 as required by ANSI.
7249 * An obscure bug in the interaction of the normal compiler, the byte
7250 compiler, inlining, and structure predicates has been patched
7251 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
7252 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
7254 * Missing ordinary arguments in a macro call are now detected even
7255 when the macro lambda list contains &KEY or &REST.
7256 * The debugger no longer complains about encountering the top of the
7257 stack when you type "FRAME 0" to explicitly instruct it to go to
7258 the top of the stack. And it now prints the frame you request even
7259 if it's the current frame (instead of saying "You are here.").
7260 * As specified by ANSI, the system now always prints keywords
7261 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
7263 * The default initial SIZE of HASH-TABLEs is now smaller.
7264 * Type information from CLOS class dispatch is now propagated
7265 into DEFMETHOD bodies, so that e.g.
7266 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7268 is now basically equivalent to
7269 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7270 (DECLARE (TYPE SINGLE-FLOAT X))
7272 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
7273 operation, without having to do run-time type dispatch.
7274 * The macroexpansion of DEFMETHOD has been tweaked so that it has
7275 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
7276 * Since I don't seem to be making big file reorganizations very often
7277 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
7278 is overflowing my ability to conveniently back them up), I've finally
7279 checked the system into CVS. (The CVS repository is on my home system,
7280 not at SourceForge -- putting it on SourceForge might come later.)
7281 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
7282 high-level GC-NOTIFY-FOO functions send their output. (There's
7283 still very little control of where low-level verbose GC functions
7284 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
7285 less than it used to -- the GC-NOTIFY-FOO functions are now under
7286 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
7287 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
7288 in only one place in the source code, and propagates it automatically
7289 everywhere that it's needed. Thus e.g. when I bump the version from
7290 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
7291 * The C source files now include boilerplate legalese and documentation
7292 at the head of each file (just as the Lisp source files already did).
7293 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
7294 to his page will be replaced with a link to his new CLiki service.
7296 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
7298 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
7299 * The build process now looks for GNU make under the default name "gmake",
7300 instead of "make" as it used to. If GNU make is not available as "gmake"
7301 on your system, you can change this default behavior by setting the
7302 GNUMAKE environment variable.
7303 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
7304 can build without error under CMU CL.
7306 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
7308 * There is now a partial SBCL user manual (with some new text and some
7309 text cribbed from the CMU CL manual).
7310 * The beginnings of a profiler have been added (starting with the
7311 CMU CL profiler and simplifying and cleaning up). Eventually the
7312 main interface should be through the TRACE macro, but for now,
7313 it's still accessed through vaguely CMU-CL-style functions and macros
7314 exported from the package SB-PROFILE.
7315 * Some problems left over from porting CMU CL to the new
7316 cross-compilation bootstrap process have been cleaned up:
7317 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
7318 instead of SB!XC:DEFMACRO, compounded by an oversight on my
7319 part when getting rid of the compiler *BACKEND* stuff.)
7320 ** The value of *NULL-TYPE* was screwed up, because it was
7321 being initialized before the type system knew the final
7322 definition of the 'NULL type. This screwed up several key
7323 optimizations in the compiler, causing inefficiency in all sorts
7324 of places. (I found it because I wanted to understand why
7325 GET-INTERNAL-RUN-TIME was consing.)
7326 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
7327 PROCLAIM FTYPE information. Unfortunately this broke binary
7328 compatibility again, since now the forms output by DEFGENERIC
7329 to refer to functions which didn't exist in 0.6.3.
7330 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
7331 can use the new (as of 0.6.3) transform for SOME into MAP into
7333 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
7334 values to (INTEGER 0 1000000), so that the time code will no longer
7335 occasionally get blown up by Linux returning 1000000 microseconds
7336 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
7337 its output conform to the ANSI spec. (Alas, this makes its output
7338 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
7339 * A full call to MAP NIL with a single sequence argument no longer conses.
7340 * fixes to problems pointed out by Martin Atzmueller:
7341 * The manual page no longer talks about multiprocessing as though
7342 it were currently supported.
7343 * The ILISP support patches have been removed from the distribution,
7344 because as of version 5.10.1, ILISP now supports SBCL without us
7345 having to maintain patches.
7346 * added a modified version of Raymond Toy's recent CMU CL patch for
7347 EQUALP comparison of HASH-TABLE
7349 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
7351 * The system still can't cross-compile itself with
7352 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
7353 entails), but at least it can compile more of itself that way
7354 than it used to be able to, and various buglets which were uncovered
7355 by trying to cross-compile itself that way have now been fixed.
7356 * This release breaks binary compatibility again. This time
7357 at least I've incremented the FASL file format version to 2, so that the
7358 problem can be detected reliably instead of just causing weird errors.
7359 * various new style warnings:
7360 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
7361 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
7362 ** using the lexical binding of a variable named in the *FOO* style
7363 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
7364 as specified by ANSI.
7365 * *RANDOM-STATE* is no longer automatically initialized from
7366 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
7367 default behavior of the system is to repeat its behavior every time
7368 it's run. If you'd like to change this behavior, you can always
7369 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
7370 old convention there was no comparably easy way to get the system to
7371 repeat its behavior every time it was run.
7372 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
7373 FTYPE declarations has been removed, in favor of their ANSI
7374 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
7375 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
7376 the types of their sequence arguments can be determined at compile time.
7377 This is done through a new open code expansion for MAP which eliminates
7378 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
7379 argument types can be determined at compile time.
7380 * The optimizer now transforms COERCE into an identity operation when it
7381 can prove that the coerced object is already of the correct type. (This
7382 can be a win for machine generated code, including the output of other
7383 optimization transforms, such as the MAP transform above.)
7384 * Credit information has been moved from source file headers into CREDITS.
7385 * Source file headers have been made more standard.
7386 * The CASE macro now compiles without complaining even when it has
7389 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
7391 * (Note that the way that the PCL macroexpansions were rewritten
7392 to accommodate the change in DEFGENERIC below breaks binary
7393 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
7394 not run under sbcl-0.6.2. Once we get out of alpha releases,
7395 i.e. hit release 1.0.0, we'll probably try to maintain binary
7396 compatibility between maintenance releases, e.g. between sbcl-1.4.3
7397 and sbcl-1.4.4. Until then, however, it might be fairly common
7398 for maintenance releases to break binary compatibility.)
7399 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
7401 * The reporting of unhandled signals has been changed to print some
7402 explanatory text as well as the report form. (Previously only
7403 the report form was printed.)
7404 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
7405 it defines, so that the compiler no longer issues undefined function
7406 warnings for compiled-but-not-yet-loaded generic functions.
7407 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
7408 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
7409 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
7410 section of the ANSI spec are supported.
7411 * The "" nickname for the "KEYWORD" package has been removed.
7412 The reader still handles symbol tokens which begin with a package marker
7413 as keywords, but it doesn't expose its mechanism for doing so in the
7414 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
7415 * The system now issues STYLE-WARNINGs for contradictory TYPE
7416 proclamations. (Warnings for contradictory FTYPE proclamations would
7417 be nice too, but those can't be done usefully unless the type system
7418 is made smarter about FUNCTION types.)
7419 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
7420 systematized, so that "*target-*.lisp is supposed to exist only on the
7421 target and imply that there's a related file which exists on the
7422 host, and *host-*.lisp is supposed to exist only on the host and imply
7423 that there's a related file which exists on the target. This involves a
7424 lot of renaming. Hopefully the acute confusion caused by the renaming
7425 will be justified by the reduction in chronic confusion..
7426 ** runtime-type.lisp -> early-target-type.lisp
7427 ** target-type.lisp -> late-target-type.lisp
7428 ** early-host-format.lisp -> early-format.lisp
7429 ** late-host-format.lisp -> late-format.lisp
7430 ** host-error.lisp -> misc-error.lisp
7431 ** early-error.lisp -> early-target-error.lisp
7432 ** late-error.lisp -> late-target-error.lisp
7433 ** host-defboot.lisp -> early-defboot.lisp
7434 ** code/misc.lisp -> code/target-misc.lisp
7435 ** code/host-misc.lisp -> code/misc.lisp
7436 ** code/numbers.lisp -> code/target-numbers.lisp
7437 ** code/early-numbers.lisp -> numbers.lisp
7438 ** early-host-type.lisp -> early-type.lisp
7439 ** late-host-type.lisp -> late-type.lisp
7440 ** host-typep.lisp -> typep.lisp
7441 ** load.lisp -> target-load.lisp
7442 ** host-load.lisp -> load.lisp
7443 ** host-disassem.lisp -> disassem.lisp
7444 ** host-insts.lisp -> insts.lisp
7445 ** byte-comp.lisp -> target-byte-comp.lisp
7446 ** host-byte-comp.lisp -> byte-comp.lisp
7447 ** host-signal.lisp -> signal.lisp
7448 ** host-defstruct.lisp -> defstruct.lisp
7449 ** late-target-type.lisp -> deftypes-for-target.lisp
7450 Furthermore, several other previously target-only files foo.lisp (e.g.
7451 hash-table.lisp and random.lisp) have been split into a target-and-host
7452 foo.lisp file and a target-only target-foo.lisp file, with their key type
7453 definitions in the target-and-host part, so that the cross-compiler will
7454 know more about target types.
7455 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
7456 gone away. In their place are various *BACKEND-FOO* variables
7457 corresponding to the slots of the old structure.
7458 * A bug which caused the SB-COLD bootstrap-time package to be propagated
7459 into the target SBCL has been fixed.
7460 * The chill.lisp system for loading cold code into a running SBCL
7462 * Support for the CMU CL "scavenger hook" extension has been removed.
7463 (It was undocumented and unused in the CMU CL sources that SBCL was
7464 derived from, and stale in sbcl-0.6.1.)
7465 * Various errors in the cross-compiler type system were detected
7466 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
7467 (enabling various consistency checks). Many of them were fixed,
7468 but some hard problems remain, so the compiler is back to
7469 running without *TYPE-SYSTEM-INITIALIZED* for now.
7470 * As part of the cross-compiler type system cleanup, I implemented
7471 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
7472 * I have started adding UNCROSS calls throughout the type system
7473 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
7474 on cross-compiler input files will be able to go away, and various
7476 * CONSTANTP now returns true for quoted forms (as explicitly required
7479 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
7481 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
7482 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
7483 (MAKE-LIST -1). In the longer term, it ought to become true
7484 that declarations are assertions even at SAFETY 1. For now, it's not
7485 quite true even at SAFETY 3, but it's at least more nearly true..
7486 (Note that this change seems to increases the size of the system by
7487 O(5%) and to decrease the speed of the compiler by 20% or more.)
7488 * changed ALIEN printing to be much more abbreviated, as a short-term fix
7489 for the problem of printing dozens of lines of distracting information
7490 about low-level system machinery as part of the top stack frame
7491 on entry to the debugger when an undefined function was called.
7492 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
7493 is not reset to COMMON-LISP-USER.
7494 * Compilation of stuff related to dyncount.lisp has been made conditional
7495 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
7496 smaller. The various dyncount-related symbols have been moved into
7497 a new "SB-DYNCOUNT" package.
7498 * tty-inspect.lisp has been renamed to inspect.lisp.
7499 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
7500 feature has gone away. (When we eventually port to other flavors of
7501 libc and/or Unix, we'll try to make the differences between flavors
7502 invisible at the user level.)
7503 * Various other *FEATURES* tags, and/or their associated conditionals,
7504 have been removed if obsolescent, or given better documentation, or
7505 sometimes given more-mnemonic names.
7507 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
7509 * tidied up "make.sh" script
7510 * tidied up system directory structure
7511 * better "clean.sh" behavior
7512 * added doc/FOR-CMUCL-DEVELOPERS
7513 * many many small tweaks to output format, e.g. removing possibly-confusing
7514 trailing #\. character in DESCRIBE-INSTANCE
7515 * (EQUALP #\A 'A) no longer signals an error.
7516 * new hashing code, including EQUALP hashing
7517 * tidied up Lisp initialization and toplevel
7518 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
7519 * command line argument processing
7520 * added POSIX-GETENV function to deal with Unix-ish environment variables
7521 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
7522 terminating SBCL on EOF
7523 * non-verbose GC by default
7524 * There is no more "sbcl" shell script; the sbcl file is now the C
7525 runtime executable (just like CMU CL).
7526 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
7528 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
7529 symbol and package information as Lisp native symbol and package objects
7530 instead of strings naming symbols and strings naming packages. This way,
7531 whenever packages are renamed (as in warm init), debug information is
7532 transformed along with everything else.
7533 * tweaked the optimization policy declarations which control the building
7534 of SBCL itself. Now, among other things, the system no longer saves
7535 source location debugging information. (This helps two problems at once
7536 by reducing SBCL size and by keeping SBCL from trying to look for its
7537 sources -- which may not exist -- when reporting errors.)
7538 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
7539 debugging and testing purposes
7540 * cleaned up printing, making the printer call PRINT-OBJECT for
7541 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
7542 methods, giving nearly-ANSI behavior
7543 * converted almost all special variables to use *FOO* naming convention
7544 * deleted PARSE-TIME functionality, since it can be done portably
7545 * moved some files out of cold init into warm init
7546 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
7548 * regularized formatting of source files
7549 * added an install.sh script
7550 * fixed ridiculous memory usage of cross-compiler by making
7551 compiler/alloc.lisp not try to do pooling unless it can hook
7552 itself into the GC of the cross-compilation host. Now the system
7553 builds nicely on my old laptop.
7554 * added :SB-ALLOC in target-features.lisp-expr
7555 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
7556 was not implemented)
7557 * re-did condition handling and note reporting in the compiler. Notes
7558 are no longer handled by signalling conditions. Style warnings
7559 and warnings are handled more correctly and reported in such a way
7560 that it's easy to find one or the other in your output (so that you
7561 can e.g. figure out which of many problems caused COMPILE-FILE to
7563 * changed the severity of several compiler warnings from full WARNING
7564 to STYLE-WARNING in order to conform with the ANSI spec; also changed
7565 compiler note reporting so that it doesn't use the condition system
7566 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
7567 COMPILE-FILE command)
7568 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
7569 function. As a consequence, START-BLOCK and END-BLOCK declarations are
7570 no longer supported, since their implementation was deeply intertwingled
7571 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
7572 * removed bogus "support" for compiler macros named (SETF FOO), and
7573 removed the compiler macro for SETF INFO (but only after making a fool
7574 of myself on the cmucl-imp mailing list by posting a bogus patch for
7575 DEFINE-COMPILER-MACRO..)
7576 * Compiled files containing forms which have side effects on the Lisp
7577 reader (such as DEFPACKAGE forms) are now handled more correctly.
7578 (Compiler queuing of top level lambdas has been suppressed by setting
7579 *TOP-LEVEL-LAMBDA-MAX* to 0. )
7580 * deleted various currently-unused source files, e.g. gengc.lisp. They
7581 may be added back at some point e.g. when porting to other architectures,
7582 but until they are it's distracting to distribute them and to try to
7584 * deleted "UNCROSS couldn't recurse through.." style warnings, since
7585 there were so many of them they're just distractions, and UNCROSS is
7586 known to be able to handle the current sources
7587 * moved PROFILE functionality into TRACE, so that it will be clear
7588 how the wrapping and unwrapping of functions when you profile them
7589 interacts with the wrapping and unwrapping of functions when you
7590 trace them. (Actually, the functionality isn't there yet, but at least
7591 the interface specification is there. Hopefully, the functionality will
7592 arrive with some future maintenance release.)
7593 * removed host-oops.lisp
7594 * changed signature of QUIT function to allow UNIX-CODE argument
7595 * fixed READ-SEQUENCE bug
7596 * tweaked verbose GC output so that it looks more like the progress
7597 output that ANSI specifies for functions like LOAD
7598 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
7599 * added <http://sbcl.sourceforge.com> to the banner information printed by