1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
3 changes relative to sbcl-1.3.3:
4 * bug fix: SB-EVAL does not signal an error for (THE KEYWORD :FOO)
5 * bug fix: a DEFTYPE name that is redefined into a DEFSTRUCT name
6 is less likely to cause confusion in the compiler.
7 * bug fix: DOCUMENTATION works as intended for classes with non-standard
9 * enhancement: who-sets and who-references work on DEFGLOBAL. (lp#1552997)
10 * enhancement: CONSTANTP understands backquote.
11 e.g. (CONSTANTP '`(0 (,CHAR-CODE-LIMIT))) => T
13 changes in sbcl-1.3.3 relative to sbcl-1.3.2:
14 * enhancement: warn about argument mismatch for functions passed as
15 arguments to other functions (e.g. REDUCE, MAP) at compile-time.
16 * optimization: functions accepting other functions (e.g. REDUCE, FIND) can
17 now be constant-folded if all function arguments are declared as foldable.
18 * optimization: improved logical operations on integers of unknown type.
19 * bug fix: exception handling no longer leaks memory on OS X. (lp#326238)
21 changes in sbcl-1.3.2 relative to sbcl-1.3.1:
22 * enhancement: {READ,WRITE}-SEQUENCE are much faster for some combinations
23 of short sequences and stream types
24 * enhancement: MAKE-LIST's result can be stack-allocated on x86-64
25 * bug fix: WRITE-SEQUENCE no longer fails to write lists containing integers
27 * bug fix: LOGTEST (and hence ODDP) no longer conses when given fixnum
28 arguments and small bit positions. (lp#1277690)
29 * bug fix: READ-FROM-STRING compiler-macro does not permute its arguments
30 * bug fix: DEFUN of a function name that collides with a system-generated
31 structure accessor does not confuse the runtime. (lp#540063)
32 * bug fix: heap corruption from miscompiled RESTART-BIND. (lp#1530390)
34 changes in sbcl-1.3.1 relative to sbcl-1.3.0:
35 * enhancement: SB-THREAD support for ARM64.
36 * enhancement: compiling an out-of-line DEFSTRUCT constructor call
37 will warn if a defaulted value is incompatible with its slot type.
38 * enhancement: a local INLINE declaration on a structure constructor
39 will work as intended, subject to any other factors that inhibit
40 inlining, even if the DEFSTRUCT was not itself within a global
41 INLINE proclamation for the named constructor
42 * enhancement: SB-EXT:DYNAMIC-SPACE-SIZE is now defined for cheneygc.
43 * enhancement: x86[-64] platforms support SB-EXT:CAS on structure slots
45 * enhancement: the interleaved structure slot optimization from
46 release 1.2.6 has been ported to 32-bit x86, Sparc, PowerPC, ARM64.
47 * enhancement: SB-THREAD:JOIN-THREAD signals a proper error when an attempt
48 is made to join the current thread
49 * bug fix: NTH-VALUE does not cause stack overflow. (lp#1511419)
50 * bug fix: structure constructor type checking is better. (lp#1508735)
51 * bug fix: supplied-p variables for unused optional or keyword variables no
52 longer confuse SB-DI:PARSE-COMPILED-DEBUG-FUN-LAMBDA-LIST (and thus the
53 backtrace machinery) (lp#1498644)
54 * bug fix: Backtrace correctly handles undefined-function frames on MIPS.
55 * bug fix: WITH-FLOAT-TRAPS-MASKED correctly clears accrued traps on MIPS
56 (fixes issues with floating-point type derivation in the compiler).
57 * bug fix: FLOAT-NAN-P and FLOAT-TRAPPING-NAN-P now work correctly on MIPS
59 * bug fix: MIPS context register access now masks to 32 bits (fixing issues
60 parsing negative-fixnum values for internal-error arguments and escaped
61 debug variables on 64-bit CPUs).
62 * bug fix: (SETF SAP-REF-DOUBLE) with constant offset on big-endian MIPS
64 * bug fix: Callback parameter (argument) handling on MIPS is now vastly
66 * bug fix: %DECREMENT-SEMAPHORE adjusts the remaining timeout after a
69 changes in sbcl-1.3.0 relative to sbcl-1.2.16:
70 * minor incompatible change: the environment passed to a macro/setf/deftype
71 expander is not always an object of type SB-KERNEL:LEXENV.
72 It can be nil, as is permissible by the standard.
73 * enhancement: ported to ARM64 Linux.
74 * enhancement: a new interpreter is included which has many benefits
75 over sb-eval. It is disabled by default. See src/interpreter/README
76 for instructions to enable it, and further details.
77 * bug fix: calling COMPILE when SB-EXT:*EVALUATOR-MODE* was :INTERPRET
78 would fail to perform "normal semantic processing such as macro expansion"
79 as stipulated by X3J13 issue LOAD-TIME-EVAL.
80 * bug fix: SB-UNICODE:CONFUSABLE-P no longer treats "<" and the empty
81 string as confusable. (lp#1504739)
82 * bug fix: (ASSERT (COMPUTE-IT ...)) would expand incorrectly
83 if COMPUTE-IT was a local macro that shadowed a global function.
84 * bug fix: SB-POSIX:CFSETISPEED and SB-POSIX:CFSETOSPEED now work properly
85 on platforms that use only the minimum specified set of fields in struct
86 termios (verified on Linux, still known not to work on FreeBSD and NetBSD,
87 very probably others). (partial fix for lp#1500951)
89 changes in sbcl-1.2.16 relative to sbcl-1.2.15:
90 * enhancement: by default, timers with a repeat interval do not "catch up"
91 by repeatedly calling their function after a clock discontinuity such as a
92 suspend and resume cycle
93 * bug fix: correctly restore multiple values on the stack in the presence of
94 alien calls. (lp#1489590)
95 * bug fix: MAKE-STRING-OUTPUT-STREAM enforces that :ELEMENT-TYPE
96 is a subtype of CHARACTER.
97 * bug fix: an EQL method specializer no longer causes garbage retention
98 if there are no extant methods using the specializer. (lp#492851)
100 changes in sbcl-1.2.15 relative to sbcl-1.2.14:
101 * new feature: DEPRECATION declaration for functions, variables and types
102 causes {EARLY,LATE,FINAL}-DEPRECATION-WARNING to be signaled when subject
103 of the declaration is used. Integrated with DESCRIBE, DOCUMENTATION and
104 SB-CLTL2:{VARIABLE,FUNCTION}-INFORMATION. Documented in the "Deprecation"
105 section of the manual.
106 * enhancement: ASDF updated to 3.1.5. (lp#1476867)
107 * enhancement: definitions within PROGN get proper source locations when
108 compiled (needs latest Slime to take advantage of this). (lp#1473147)
109 * enhancement: source locations for DEFCLASS slots now point directly to the
110 slot definitions, not the whole DEFCLASS form.
111 * bug fix: better source location in the presence of quoted forms.
113 * bug fix: better source locations inside backqoute. (lp#1361502)
114 * bug fix: HANDLER-BIND requires that the handler-function be
115 a function designator at the time of binding establishment. (lp#1480679)
116 * bug fix: inlined functions surrounded by nested macrolets are properly
119 changes in sbcl-1.2.14 relative to sbcl-1.2.13:
120 * minor incompatible change: The name of a compiled anonymous lambda
121 as returned by the third value of FUNCTION-LAMBDA-EXPRESSION can have
122 a lambda-list-like list following the introductory LAMBDA that is not
123 in general a syntactically valid lambda list. Specifically, it won't
124 retain default values, supplied-p variables, or &KEY or &AUX bindings.
125 * enhancement: DESTRUCTURING-BIND has been totally reimplemented from
126 scratch to address a handful of performance and correctness issues.
127 Some minor behavioral differences exist regarding order of evaluation
128 of default forms for unsupplied &OPTIONAL and &KEY arguments
129 when nested destructuring patterns are involved.
130 (lp#707556, lp#707573, lp#707578, lp#708051)
131 * enhancement: DEFCONSTANT and DEFSTRUCT respect package locks. (lp#1186238,
133 * enhancement: sb-unicode:normalize-string has a new optional argument,
134 FILTER, a callback which controls which decomposed characters are
135 collected. Useful for stripping away diacritics more efficiently.
136 * bug fix: (TYPE-OF ARRAY) for a non-simple array is subject to change
137 after a call of ADJUST-ARRAY. (lp#1333731)
138 * bug fix: Dynamic-extent allocation with a loop between allocating a value
139 and the start of its environment no longer discards the allocated data
140 when the loop is taken. (lp#1472785)
141 * bug fix: Variable-reference elimination no longer generates incorrect code
142 under certain circumstances. (lp#1446891)
143 * bug fix: variables with EQL types are no longer treated as constants by
144 VOPs, which caused problems with closures being allocated for such
145 variables, but they remained unused. (lp#1390149)
146 * bug fix: Windows installer generates registry key name
147 correctly. (lp#1476447)
149 changes in sbcl-1.2.13 relative to sbcl-1.2.12:
150 * incompatible change: on success, TRY-SEMAPHORE and WAIT-ON-SEMAPHORE
152 * enhancement: WAIT-ON-SEMAPHORE accepts a decrement parameter
153 * enhancement: JOIN-THREAD allows distinguishing timeout vs. abort in all
155 * enhancement: On Windows DBG_PRINTEXCEPTION_C is handled and its message is
156 printed. (lp#1437947)
157 * bug-fix: TRUENAME works properly on broken symlinks presented as
158 directories. (lp#1400003)
159 * bug fix: Inlined DPB and DEPOSIT-FIELD don't interfere with left-to-right
160 order of argument evaluation. (lp#1458190)
161 * bug fix: (SETF (LDB (BYTE 1 2 JUNK) X) 0) is rightly rejected.
162 * bug fix: DEFSETF lambda lists should not permit argument destructuring.
163 * bug fix: calls to (SETF SLOT-VALUE) on a missing slot would in certain
164 situations incorrectly return the result of a SLOT-MISSING method
165 instead of always returning the new value. (lp#1460381)
166 * bug fix: a DEFMACRO occurring not at toplevel and capturing parts of
167 its lexical environment (thus being a closure) caused expressions
168 involving the macro name to cause corruption in the pretty-printer
169 due to faulty introspection of the lambda list of a closure.
170 * bug fix: out of line MAP/MAP-INTO check that the results produced by the
171 function are of the matching sequence type. (lp#1459581)
172 * bug fix: pretty-printing of '(LET `((,X ,Y)) :B) is handled correctly.
174 changes in sbcl-1.2.12 relative to sbcl-1.2.11:
175 * minor incompatible change: the SB-C::*POLICY* variable is no longer
176 a list. Code which manipulated it as such (including but not limited
177 to non-bundled releases of ASDF) will need to be revised.
178 * enhancement: The input stream for COMPILE-FILE implements
180 * enhancement: EVAL errors that occur by way of LOAD report the starting
181 line and column number of the erring toplevel form. (lp#565247)
182 * optimization: better MAP and MAP-INTO on known vector result types.
183 * bug fix: Read/modify/write macros accessing a place which is a
184 composition of CAR+CDR operations, such as (SHIFTF (CADR X) (ELT V 0)),
185 do not access subforms more than once. (lp#1450968)
186 * bug fix: short form of DEFSETF no longer allows trailing junk.
187 * bug fix: DEFINE-MODIFY-MACRO respects the provisions of CLHS 5.1.3
188 regarding argument evaluation order. (lp#1452539)
189 * bug fix: POP works as specified in CLHS if the setter for its
190 argument has a side-effect on the existing CAR value. (lp#1454021)
191 * bug fix: Reading "#()" with a positive numeric argument signals a
192 reader error. As specified, reading "#1()" has undefined consequences,
193 so correct portable code should be indifferent to this. (lp#1252100)
194 * bug fix: Malformed reader conditionals such as "(#-no-such-feature)"
195 and "(#+sbcl)" no longer parse as NIL. (lp#1454400)
197 changes in sbcl-1.2.11 relative to sbcl-1.2.10:
198 * enhancement: SET-PPRINT-DISPATCH will warn when given an expression in
199 which any part is unrecognizable as a legal type-specifier.
200 The dispatch table will be altered, but the new entry is disabled.
201 Subsequent type-defining forms will cause pprint-dispatch tables to
202 re-examine whether any disabled entries should be enabled. (lp#1429520)
203 * enhancement: Loading code containing calls to a deprecated function will,
204 under most circumstances, signal warnings similar to compiling such code.
205 The usual caveat holds about not detecting calls through a computed name,
206 as in (funcall (intern "DEPRECATED-FUN" "SB-EXT")).
207 * enhancement: (SB-EXT:COMPILE-FILE-LINE) is a new macro that expands
208 to a constant (VALUES integer integer) indicating the source line/column
209 from which it was read, intended for logging Lisp runtime errors in
210 a style similar to that afforded by the C preprocessor __LINE__ macro.
211 Similarly (SB-EXT:COMPILE-FILE-POSITION) returns a position in characters.
212 * enhancement: improved source locations for VOPs, alien types and
214 * bug fix: functions in :FINAL deprecation have the correct docstring.
215 No visible change, as no such functions presently exist. (lp#1439151)
216 * bug fix: (SETF (FDEFINITION this) (FDEFINITION OTHER)) signals an error
217 if OTHER names either a macro or special-operator. (lp#1439921)
219 changes in sbcl-1.2.10 relative to sbcl-1.2.9:
220 * minor incompatible change: all SOCKINT::WIN32-* functions have been
221 deprecated with EARLY deprecation state
222 * minor incompatible change: performing introspection via the system-internal
223 SB-INT:INFO function could expose that :TYPE :TRANSLATOR is not necessarily
224 a function, as it always was before. (Affects swank-fancy-inspector)
225 * enhancement: The value of SXHASH on bit-vectors of length equal to the
226 word size now depends on the vector's contents instead of being constant;
227 its value on bit-vectors of length divisible by the word size now depends
228 also on the contents of the vector's last word.
229 * bug-fix: sb-bsd-sockets on win32 uses proper C function declarations.
231 * bug fix: A new dead code elimination phase removes dead code loops
232 that confuse stack analysis. (lp#1255782, lp#308914)
233 * bug fix: A toplevel form which was simple enough to bypass the main
234 compiler in COMPILE-FILE, and which contained an empty SETQ or PROGN
235 would produce an invalid fasl file. (lp#1427050)
236 * bug fix: The compiler no longer signals an internal error when
237 encountering invalid FUNCTION forms like (function 1)
238 * bug fix: express proper dependencies in the ASDF contrib, to support
239 systems where make runs in parallel. (lp#1434768; thanks to Nikhil
242 changes in sbcl-1.2.9 relative to sbcl-1.2.8:
243 * minor incompatible change and bug fix: unboxed numeric constants
244 on x86oids are arranged in memory differently, and the disassembler
245 does not show them separately in DISASSEMBLE, but does
246 if DISASSEMBLE-CODE-COMPONENT is used. (lp#1421987)
247 * optimization: The compiler's treatment of type specifiers makes
248 it slightly faster and more memory-efficient. Portable code
249 should be indifferent to this change, however, users of
250 SB-INTROSPECT:FUNCTION-TYPE might notice that (MEMBER T NIL)
251 and (MEMBER NIL T) are both internally collapsed to the former,
252 so that the latter can never be obtained as part of an FTYPE.
253 * optimization: a TYPEP call in which the second argument is not a
254 QUOTE form but nevertheless recognized as a compile-time constant
255 might open-code the test. One scenario for this involves backquote,
256 such as (TYPEP x `(my-type ,some-arg)). Code which relied upon
257 deferring until runtime should declare (NOTINLINE TYPEP).
258 [Due to the sematic constraints of DEFTYPE etc in in CLHS 3.2.2.3,
259 code requiring delayed evaluation could be unportable though.]
260 * enhancement: unused variables at the top-level are now reported.
262 * bug fix: DEFCLASS handles cyclic {super,meta}class relations better
264 * bug fix: compiler no longer signals an error when compiling certain
265 function calls. (lp#1416704, lp#404441, lp#1417822, lp#1234919)
266 * bug fix: compiler doesn't stumble on a LOGIOR transform. (lp#1389433)
267 * bug fix: more robust debugger and backtraces. (lp#1413850, lp#1099500,
268 lp#1412881, lp#945261, lp#1419205, lp#1409402)
269 * bug fix: files larger than 4GB can now be compiled.
270 * bug fix: x86 truncated results from 64-bit foreign functions to 32 bits.
271 * bug fix: file-position didn't work on large files on win32. (lp#1271545)
272 * bug fix: callbacks from foreign threads can work without enabling
274 * bug fix: sb-introspect:function-lambda-list works properly on interpeted
276 * bug fix: ADJUST-ARRAY properly handles non-adjustable arrays. (lp#886418)
277 * bug fix: compiler no longer fails to dump a multidimensional array
278 constant involving a circular reference to itself
279 * bug fix: conditional and nested DX allocation no longer confuse the
280 compiler in STACK analysis. (lp#1044465)
281 * bug fix: sb-rotate-byte constant folding bug fixed. (lp#1423682)
283 changes in sbcl-1.2.8 relative to sbcl-1.2.7:
284 * enhancement: better error and warning messages. (lp#1314767, lp#736383)
285 * enhancement: backtrace for invalid argument count produces the exact
286 supplied arguments including the extra ones, on x86, x86-64 and ARM.
287 * enhancement: a STYLE-WARNING is signaled for DEFSTRUCT accessors which
288 are used before the structure is defined; similarly for the predicate.
289 * optimization: FORMAT NIL with only ~a and string arguments is transformed
291 * optimization: POSITION and FIND when inlined into code that is compiled
292 with qualities of safety < 2 and speed > space will no longer signal
293 an error on circular lists, but will potentially loop forever if given
294 no :END constraint. As was always the case, calls that are not inlined
295 are safe regardless of lexical policy.
296 * bug fix: CLOS methods compiled with (OPTIMIZE (DEBUG 0))
297 no longer cause debugger failure when printing a backtrace
298 * bug fix: more resilience to deleted code. (lp#1308328, lp#1390544)
299 * bug fix: the CLHS example of MAKE-LOAD-FORM involving TREE-WITH-PARENT
300 did not work, and now it does.
302 changes in sbcl-1.2.7 relative to sbcl-1.2.6:
303 * optimization: returning constant values refers to preboxed constants
304 more reliably. (lp#1398785)
305 * enhancement: a STYLE-WARNING is produced if a compiler-macro is defined
306 for a function after at least one ordinary (not inlined) call to that
307 function was compiled, indicating a likely compilation order problem.
308 Likewise a warning ensues if a call is compiled to a function
309 that is subsequently proclaimed INLINE.
310 * enhancement: always lose() when something goes wrong while saving a core
311 (instead of just printing an error on stderr in some situations).
312 * enhancement: frames in the debugger are now restartable by default.
313 * bug fix: restore error handling on Windows x86.
314 * bug fix: MAKE-SEQUENCE detects type errors in its :INITIAL-ELEMENT
315 at compile-time when possible. (lp#330299)
316 * bug fix: parsing of malformed type specifiers no longer results
317 in a memory-fault-error.
318 * bug fix: LOOP properly destructures nested lists in WITH.
319 * bug fix: MACROEXPANDing the redefinition of an alien structure type no
320 longer signals the wrong error.
321 * bug fix: PROGV doesn't get confused by forced DEBUG 3 (lp#1405456).
323 changes in sbcl-1.2.6 relative to sbcl-1.2.5:
324 * enhancement: SERVE-EVENTS uses the poll() system call in lieu of
325 select() if the OS has the former. Previously poll() was used
326 only if waiting on exactly one file descriptor.
327 * enhancement: efficiency of access to untagged structure slots is improved
328 on x86-64, and the order of slots in memory is exactly as specified by
329 defstruct, simplifying use of structures as arguments to foreign calls.
330 * bug fix: SB-DEBUG:ARG now works in all TRACE options which evaluate forms.
332 * bug fix: GC memory corruption during internal memory handling.
333 * bug fix: duplicate effective-slot-definition objects as compared
334 by EQ on name could be present in CLASS-SLOTS of a class whose
335 metaclass was structure-class or condition-class. (lp#1049423)
336 * bug fix: HANDLER-BIND with empty bindings works again; regression in
338 * bug fix: ATOMIC-INCF works on structure slots in interpreted code.
340 * bug fix: MAKE-ARRAY properly handles character types like (eql #\a) and
341 (member #\a #\c). (lp#1392068)
342 * bug fix: READ sometimes accidentally preserved a whitespace character
343 after a token when it should not have. (lp#327790)
345 changes in sbcl-1.2.5 relative to sbcl-1.2.4:
346 * enhancement: sb-bsd-sockets now has basic support for IPv6
347 * enhancement: An sb-unicode package has been added, containing
348 many functions related to handling Unicode text
349 * enhancement: The reader now normalizes symbols to Normalization
350 Form KC (NFKC). This behavior can be disabled with
351 SB-EXT:READTABLE-NORMALIZATION
352 * enhancement: a style-warning is signaled if OPTIMIZE declarations
353 multiply specify a quality with differing values. (lp#310267)
354 * bug fix: conservatively pointed to pages wipe out unused dwords so
355 that they cannot act as false roots in turn.
356 * bug fix: the walker's handling of lexical variable and symbol-macro
357 bindings is improved (lp#375326, lp#1368305)
358 * bug fix: HANDLER-{BIND,CASE} no longer drop into ldb when a clause
359 contains an undefined condition type; regression in 1.1.19 (lp#1378939)
360 * bug fix: in interpreted code, inequality predicates did not type-check
361 arguments that weren't examined, and a 1-argument use of MIN or MAX
362 accepted a complex number. (lp#1373702)
363 * bug fix: APROPOS and APROPOS-LIST handle inherited symbols correctly.
364 (lp#1364413, thanks to Zach Beane)
366 changes in sbcl-1.2.4 relative to sbcl-1.2.3:
367 * enhancement: the sequence functions MAP, CONCATENATE and MERGE now call
368 the new generic functions SEQUENCE:MAP, SEQUENCE:CONCATENATE and
369 SEQUENCE:MERGE respectively when the specified result type designates an
371 * bug fix: Wrong binding order of supplied-p parameters in macro lambda
373 * bug fix: VALIDATE-SUPERCLASS returns T when the superclass is the
374 universal superclass (lp#1332983)
375 * bug fix: reading an uninterned symbol whose print name has the
376 syntax of an integer signals an error. (lp#310062)
377 * bug fix: the walker is less likely to be confused when walking LET* forms
378 with special bindings and use of those bindings and others of the same
380 * bug fix: a rare bug affecting 32-bit platforms resulting in a
381 fatal condition with the message "Globaldb rehash failure" has been fixed.
383 changes in sbcl-1.2.3 relative to sbcl-1.2.2:
384 * enhancement: DOCUMENTATION works on instances of
385 FUNCALLABLE-STANDARD-CLASS
386 * enhancement: ASSERT reports arguments of calls to lexical functions in
387 additional to global functions.
388 * enhancement: ASDF updated to 3.1.3
389 * enhancement: UIOP can be loaded without ASDF.
390 * bug fix: some methods on CHANGE-CLASS did not finalize the new class
391 before accessing its class-precedence list.
392 * bug fix: CHANGE-CLASS no longer fails on unbound slots in the source
394 * bug fix: CHANGE-CLASS signals an appropriate error when the destination
395 class is a FORWARD-REFERENCED-CLASS.
396 * bug fix: CHANGE-CLASS no longer signals bogus TYPE-ERRORs for slots for
397 which initargs have been supplied.
398 * bug fix: saving cores on ARM was broken since the introduction of GENCGC.
400 * bug fix: macroexpanding a backquoted expression involving ",."
401 outside of the compiler failed. (lp#1354623)
403 changes in sbcl-1.2.2 relative to sbcl-1.2.1:
404 * incompatible change: the #\` ("backquote") reader macro was reimplemented
405 to support robust pretty-printing. Reading a form involving #\` produces
406 an invocation of the QUASIQUOTE ordinary macro which may contain subforms
407 that are not lists. Code that unportably attempts operations on
408 un-evaluated forms resulting therefrom, e.g.
409 (SUBST a b (read-from-string "`(x (,y))"))
410 might generate incorrect results and/or errors.
411 * enhancement: support for GNU/kFreeBSD x86.
412 * enhancement: ATOMIC-INCF and ATOMIC-DECF can operate on (CAR x), (CDR x)
413 and DEFGLOBAL variables of type fixnum.
414 * enhancement: arithmetic constant reduction is now performed on defconstant
415 constants too. (lp#1337069).
416 * bug fix: certain ftype proclamations containing &optional t &rest t no
417 longer cause subsequent definitions to signal bogus style-warnings.
418 * bug fix: #\Bell and #\Bel now read to different characters. (lp#1319452).
419 * bug fix: CAS SYMBOL-VALUE on locally special variables didn't work.
422 changes in sbcl-1.2.1 relative to sbcl-1.2.0:
423 * enhancement: GENCGC is enabled on ARM.
424 * enhancement: better error reporting for invalid calls to local functions.
425 * enhancement: support for GNU/kFreeBSD distributions. (lp#1079954, thanks
427 * enhancement: experimental support for threads on NetBSD/x86-64. (thanks
429 * enhancement: support for DragonFly BSD. (lp#1292845, thanks to Vasily
431 * bug fix: TYPE-OF must not return AND/OR/NOT expressions.
433 * bug fix: accessing NIL arrays stopped producing errors. (lp#1311421)
434 * bug fix: DISASSEMBLE no longer prints unwanted stuff. (lp#1251861)
435 * bug fix: compiling SVREF on unknown types no longer produces scary errors.
437 * bug fix: assorted LOOP fixes and enhancements. (lp#645534, lp#1322923,
438 lp#700538, lp#613876, lp#695286, lp#798388)
439 * bug fix: silence compiler notes from the SEARCH transform. (lp#1071310)
440 * bug fix: array type intersection handles T and unknown element types
441 correctly. (lp#1258716)
442 * bug fix: fix a corner case in array type unparsing that would result in
443 misleading translations from our internal type representation.
444 * bug fix: array-rank now sees through union and intersection types.
446 * bug fix: when DECLARE expressions are in the wrong place, be careful not
447 to attempt to evaluate the subforms. (lp#573747; thanks to Roman
449 * bug fix: misplaced and missing declarations in DEFTRANSFORM. (lp#1066451)
450 * bug fix: FBOUNDP returned NIL for a class of incorrect function names
451 instead of signaling an error. (lp#1095483)
452 * bug fix: fix a compile-time AVER in regalloc: lifetime analysis
453 used to (rarely) introduce duplicate conflict markers in a single
454 TN/block pair. (lp#1327008)
456 changes in sbcl-1.2.0 relative to sbcl-1.1.18:
457 * bug fix: read-time-eval backquote context mixup. (lp#1321047)
458 * enhancement: when SAVE-LISP-AND-DIE fails due multiple threads, the
459 report of the signaled conditions lists currently running threads.
460 * enhancement: ported to ARM linux.
461 * enhancement: sb-gmp contrib has been updated. (lp#1305266)
462 * enhancement: new contrib sb-mpfr by Stephan Frank.
463 * bug fix: MAKE-SEQUENCE works with sequence types defined via DEFTYPE
464 (lp#1315846, thanks to Mark Cox)
465 * bug fix: SET-[DISPATCH-]MACRO-CHARACTER should coerce a symbolic
466 function-designator to a function only as needed. (lp#1012335)
467 * bug fix: remove references to asdf-install from the manual. (lp#1207544,
468 thanks to Thomas Hlavaty)
469 * bug fix: handle --without-xxx options to make.sh more carefully.
470 (lp#1246665, thanks to Richard M Kreuter)
471 * bug fix: prevent maybe-delete-exit from doing semantically broken things
472 with local exits. (lp#309099, lp#518099, lp#533930)
473 * bug fix: attempts to subclass BUILT-IN-CLASSes signal errors, as required
476 changes in sbcl-1.1.18 relative to sbcl-1.1.17:
477 * optimization: COERCE is now more effecient for more cases when the type is
478 known at compile-time.
480 * bug fix: correctly inherit condition initforms. (lp#1300904)
481 * bug fix: properly pprint literal functions inside nested lists.
483 * bug fix: more-correctly handle array-type unity (broken for ages, causing
484 compilation problems since 1.1.13.x due to smarter TYPEP type propagation,
485 reported by jasom in #lisp).
487 changes in sbcl-1.1.17 relative to sbcl-1.1.16:
488 * enhancement: printing backtraces respects
489 SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* when printing call arguments
491 * optimization: defstruct out-of-line accessor are now as fast as inlined.
493 * bug fix: INVOKE-RESTART-INTERACTIVELY no longer refuses to invoke RESTART
494 instances with a test-function (reported by Vivitron in #sbcl)
495 * bug fix: STREAM-ERROR-POSITION-INFO fails in fewer situations (lp#1264902)
496 * bug fix: Change COND error message (lp#1254511)
497 * bug fix: LOAD is no longer confused when called on a directory.
499 * bug fix: MAKE-CONDITION reports names of missing condition classes
500 properly (lp#1199223)
501 * bug fix: restore building with clang. (lp#1293643)
502 * bug fix: restore building on SPARC (broken since 1.1.15).
503 * bug fix: improved FreeBSD support.
504 * bug fix: PPC floating point conversion corrupted stack.
506 changes in sbcl-1.1.16 relative to sbcl-1.1.15:
507 * minor incompatible change: improve read/print consistency for pathnames on
508 Win32, by using the circumflex character #\^ as the escape character.
510 * enhancement: SB-EXT:DEFINE-LOAD-TIME-GLOBAL. (lp#1253688)
511 * enhancement: Loading fasls with symbols from an undefined package includes
512 the name of the symbol in the error message.
513 * bug fix: problems when redefining classes and doing TYPEP on classes
514 concurrently. (lp#1272742)
515 * bug fixes to the x86-64 XCHG instruction:
516 ** it was misencoded when used with RAX, R8-R15 registers. (reported by
518 ** it was misencoded when used to exchange EAX with itself.
519 ** the disassembler wrongly printed XCHG RAX, R8 and the corresponding
520 32- and 16-bit variations as NOP.
521 * bug fix: the disassembler outputs source annotations in the right place
522 and no longer randomly drops some of them. (lp#1249205)
523 * bug fix: fix commutative-arg-swap from introducing undumpable structures
524 into code, prevent code with errors from being compiled. (lp#1276282)
525 * bug fix: pathnames with :back in their directory component are succeffully
527 * bug fix: the deterministic profiler now uses ENCAPSULATE functionality to
528 wrap functions around. (lp#309086)
530 changes in sbcl-1.1.15 relative to sbcl-1.1.14:
531 * new feature: the iterative spilling/coloring register allocator developed
532 by Alexandra Barchunova during Google Summer of Code 2013 is now merged
533 in. By default, it only activates for functions that optimize with
534 (speed 3) and (> speed compilation-speed), but setting
535 sb-regalloc:*register-allocation-method* to :iterative forces its
536 execution. The previous behaviour can be obtained by instead setting that
537 variable to :greedy. Thanks again to Google for their support, and, more
538 crucially, to Alexandra Barchunova for her hard work.
539 * optimization: make-array with known element-type and unknown dimensions is
541 * optimization: make-array with unknown element-type is faster as well.
543 * enhancement: sb-ext:save-lisp-and-die on Windows now accepts
544 :application-type argument, which can be :console or :gui. :gui allows
545 having GUI applications without an automatically appearing console window.
546 * enhancement: reduced conservativism on GENCGC platforms:
547 conservative roots must be valid-looking tagged pointers or point
548 within a code object, not merely point to within the allocated part
549 of a page, in order to pin a page.
550 * enhancement: support for "Mac Roman" external format.
551 * enhancement: encapsulation of named generic functions now happens without
552 altering the identity of the function bound to the name.
553 * bug fix: Windows applications without the console window no longer misbehave.
554 (patch by Wilfredo Velazquez, lp#1256034).
555 * bug fix: modular arithmetic optimizations do not stumble on dead branches
556 with bad constants. (reported by Douglas Katzman)
557 * bug fix: CLISP can be used again as a cross-compilation host.
558 (Thanks to Vasily Postnicov, lp#1261451)
559 * bug fix: run-program crashed with :directory nil. (lp#1265077)
561 changes in sbcl-1.1.14 relative to sbcl-1.1.13:
562 * optimization: complicated TYPEP tests are less opaque to the type
563 propagation pass. (lp#1229340)
564 * optimization: [N]BUTLAST perform a single pass over the list. (lp#1245697)
565 * optimization: EQUALP on structures with raw slots (double-float/complex)
566 no longer conses and is faster.
567 * optimization: RESTART-CASE expands to more compact code.
568 Thanks to Jan Moringen. (lp#1249055)
569 * enhancement: Top-level defmethod without defgeneric no longer causes
570 undefined-function warnings in subsequent forms. (lp#503095)
571 * enhancement: Better error messages for system errors on Windows.
572 * enhancement: run-sbcl.sh is usefully handled by rlwrap. Thanks to William
573 Cushing. (lp#1249183)
574 * enhancement: new function SB-EXT:ASSERT-VERSION->= accepts a version
575 specification (multiple integer arguments) and signals a continuable error
576 if the current SBCL version is lower (older) than the specification.
578 * enhancement: better ARRAY-RANK result derivation. (lp#1252108)
579 * bug fix: EQUALP now compares correctly structures with raw slots larger
581 * bug fix: contribs couldn't be built on Windows with MinGW.
582 * bug fix: Better pathname handling on Windows. (lp#922117)
583 * bug fix: OPEN reports a more meaningful error when an existing file is
584 opened for output with :if-exists :new-version. Thanks to Philip
585 Munksgaard. (lp#455381)
586 * bug fix: DEFSTRUCTs with NIL as a slot name no longer cause strange
587 CLOS-related errors. (lp#633911)
588 * bug fix: GC deadlocks caused by concurrent consing on Windows.
590 changes in sbcl-1.1.13 relative to sbcl-1.1.12:
591 * optimization: better distribution of SXHASH over small conses of related
593 * other improvements to SXHASH:
594 ** use the whole of the positive-fixnum range for SXHASH of fixnums
595 * enhancement: The error message when calling an undefined alien function
596 includes the name of the function on x86-64.
597 * enhancement: sb-ext:run-program now supports :environment on Windows.
598 * enhancement: ASDF is no longer required to load contribs at runtime.
600 * enhancement: when called with a symbol, FIND-RESTART no longer calls
601 COMPUTE-RESTARTS, making it faster and cons less (lp#769615)
602 * enhancement: FIND-RESTART and COMPUTE-RESTARTS handle huge restart
603 clusters better in some cases
604 * enhancement: SOME/ANY/other quantification higher-order functions no
605 longer cons. (lp#1070635)
606 * bug fix: forward references to classes in fasls can now be loaded.
608 * bug fix: don't warn on a interpreted->compiled function redefinition
609 from the same location. (patch by Douglas Katzman, lp#1042405)
610 * bug fix: Create vectors of proper internal length when reading literal
611 vectors from FASLs. (Reported by Jan Moringen)
612 * bug fix: COMPILE can now successfully compile setf functions.
613 (Reported by Douglas Katzman)
614 * bug fix: run-program performs more correct escaping of arguments on
615 Windows. (lp#1239242)
616 * bug fix: function-lambda-expression on generic functions returns the
618 * bug fix: (the [type] [constant]) now warns when [constant] matches
619 [type] except for the number of values. (Reported by Nathan Trapuzzano
621 * bug fix: signal errors in required cases of slot-definition initialization
622 protocol. (lp#309072)
623 * bug fix: run-sbcl.sh works better in the presence of symlinks on OS X.
624 (thanks to Stelian Ionescu, lp#1242643)
625 * bug fix: when given a restart object, FIND-RESTART checks whether the
626 restart is active and, when a condition is supplied, whether the restart
627 is associated to a different condition (lp#774410)
629 changes in sbcl-1.1.12 relative to sbcl-1.1.11:
630 * enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
631 shutdown(3). (thanks to Jan Moringen, lp#1207483)
632 * enhancement: document extensible sequences. (thanks to Jan Moringen,
634 * optimization: EQUAL and EQUALP transforms are smarter.
635 (thanks to Elias Martenson, lp#1220084)
636 * optimization: CHAR-EQUAL is faster for constant and base-char arguments.
637 * bug fix: probe-file now can access symlinks to pipes and sockets in
638 /proc/pid/fd on Linux. (reported by Eric Schulte)
639 * bug fix: SBCL can now be built on Solaris x86-64.
640 * bug fix: Floating point exceptions do not persist on Solaris anymore.
641 * bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
642 * bug fix: handle compiler-error in LOAD when it's not run from inside EVAL.
644 * bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base.
645 (thanks to Stephan Frank)
646 * bug fix: space allocation of result bignums in SB-GMP is more accurate.
647 (thanks to Stephan Frank, lp#1206191)
648 * bug fix: sb-safepoint can now reliably handle signal interruptions of
649 foreign code. (lp#1133018)
650 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
651 constructors no longer fails to merge actual and default initargs
652 (thanks to Jan Moringen, lp#1179858)
653 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
654 constructors handles non-KEYWORD initialization arguments more correctly.
655 * bug fix: loading the SB-SIMPLE-STREAMS contributed module no longer
656 clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, lp#884603)
657 * bug fix: class definitions with CPLs inconsistent with their metaclasses
658 are less likely to destroy the object system's integrity. (lp#309076)
659 * bug fix: restart clause parsing in RESTART-CASE is more in line with the
660 standard. (lp#1203585, thanks to Jan Moringen)
661 * bug fix: silence a note from RESTART-CASE under high-SPEED optimization
662 settings. (lp#1023721)
663 * bug fix: getting the order of arguments to
664 SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error
665 rather than a failed AVER. (reported by Paul Nathan)
666 * bug fix: Parsing of &optional/&key/&rest arguments now never overwrites
667 arguments during copying on x86 and x86-64; it may still happen on other
668 platforms when there are more fixed arguments than stack slots.
669 (reported by Jan Moringen)
671 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
672 * enhancement: support building the manual under texinfo version 5.
674 * enhancement: Windows builds no longer display the "Kitten of Death" message.
675 A warning is instead appended to the regular banner, and may be muted with
676 --noinform. (lp#728247)
677 * enhancement: support building under new linker handling of syscalls under
678 NetBSD. (thanks to Robert Swindells)
679 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
680 (regression since 1.1.9)
681 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
682 compiler macro. (thanks to Douglas Katzman).
683 * bug fix: signal a warning when defining a setf-function when a
684 setf-expander is already present. (thanks to Douglas Katzman).
685 * bug fix: improved threading on PPC.
686 * bug fix: ROOM works again on Windows. (lp#1206456)
687 * bug fix: Streams were flushed even when there was one byte still left in
688 the buffer. (lp#910213)
689 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
690 either NIL or :ERROR. (reported by Jan Moringen)
692 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
693 * enhancement: ASDF has been updated to 3.0.2.
694 * optimization: stack frames are packed more efficiently on x86oids, which
695 ought to reduce the frequency of Methuselahn conservative references (it
696 certainly helps with gc.impure.lisp / BUG-936304 on x86).
697 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
698 recognized in modular arithmetic contexts, and compile to native negate,
699 rather than going through bignums only to keep the low bits.
700 * bug fix: Compiling potential modularic arithmetic forms does not cause type
701 errors when some integer types lack lower or upper bounds. (lp#1199127)
702 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
703 bitwidth before being used in a non-modular context. (lp#1199428)
704 * bug fix: Multiple catch/unwind blocks in a single function are now
705 allocated in the right stack order on win32. (lp#1072739)
707 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
708 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
709 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
710 * enhancement: disassemble now annotates some previously missing static
711 functions, like LENGTH.
712 * enhancement: clean.sh now also cleans doc/internals.
713 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
714 print a symbol with a package prefix.
715 * enhancement: The debugger and backtracing are more robust against buggy
716 PRINT-OBJECT methods.
717 * optimization: calls to static functions on x86-64 use less instructions.
718 * optimization: compute encode-universal-time at compile time when possible.
719 * optimization: when referencing internal functions as #'x, don't go through
720 an indirect fdefn structure.
721 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
722 * optimization: (mod fixnum) type-checks are performed using one unsigned
723 comparison, instead of two.
724 * optimization: enable more modular arithmetic transforms in the presence of
726 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
727 when the result is known to be negative.
728 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
729 * optimization: comparisons between rationals and constant floats or between
730 integers and constant ratios are now converted to rationals/integers at
732 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
733 * bug fix: problems with NCONC type derivation (reported by Jerry James).
734 * bug fix: EXPT type derivation no longer constructs bogus floating-point
735 types. (reported by Vsevolod Dyomkin)
736 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
737 addrinfo. (lp#1187041, patch by Jerry James)
738 * bug fix: uninitialized type-error conditions can now be printed.
740 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
741 listening, allowing several tests to run in parallel.
742 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
743 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
745 * bug fix: Specialised SIMD-PACK types can be negated.
746 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
747 reported by Eric Marsden)
748 * bug fix: FP return values from foreign calls are always rounded to single
749 or double float precision on x87.
750 * bug fix: Known-safe vector access on x86oids should not fail spuriously
751 when the index is of the form (+ x constant-positive-integer).
752 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
753 * bug fix: backtrace printer no longer tries to create very large lists when
754 the arg-count register is clobberred by other code. (lp#1192929)
755 * bug fix: x86 should never signal an FP exception while boxing an FP value,
756 a situation that lands us into ldb.
758 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
759 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
760 ROOM, plus a few SB-INTROSPECT functions) has been completely
761 rewritten; it may now exhibit different bugs than before.
762 * new feature: minimal runtime/compiler intrastructure support for SSE
763 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
764 feature :sb-simd-pack. This should enable intrinsics extensions as
765 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
766 for maintaining a branch for so long.
767 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
768 the working directory of the spawned process.
769 (lp#791800) (patch by Matthias Benkard)
770 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
771 stack-allocated on PPC.
772 * enhancement: "fixed objects" can now be stack-allocated on PPC.
773 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
774 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
775 also returns VOPs which do not translate any functions, and finds
776 defoptimizer types ir2convert and stack-allocate-result.
777 * enhancement: better type derivation for APPEND, NCONC, LIST.
779 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
780 heap in a manner similar to the GC rather than its previous ad-hoc
781 scheme, and is therefore no less and possibly more accurate.
782 * fixes and enhancements related to Unicode:
783 ** the character database information has been updated to Unicode 6.2;
784 ** support for canonical and compatibility decomposition of characters has
785 been added, along with support for primary composition;
786 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
787 NFKD) has been included;
788 ** querying the character database for code points not defined by Unicode
789 gives less wrong answers (lp#1178038, reported by Ken Harris)
790 * enhancement: print intermediate evaluation results for some ASSERTed
791 expressions. (lp#789497) (patch by Alexandra Barchunova)
792 * enhancement: x86-64 disassemblies are annotated with unboxed constant
793 values when there are references to (RIP-relative) unboxed constants.
794 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
795 of quadratically with the size of the input in the worst case.
797 * bug fix: handle errors when initializing *default-pathname-defaults*,
798 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
799 decoding errors, or directories being deleted.
800 * bug fix: Loading a core with a discontiguous dynamic space now correctly
801 computes the amount of dynamic space used.
802 * bug fix: disassembler missing ",8" on SHLD
803 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
804 that provide an "invalid" stack frame link for the signal handler
805 itself now use the saved-fp-and-pc mechanism to pick up from the stack
806 frame in the interrupt (signal) context. This is known to affect
807 threaded FreeBSD/x86-64.
808 * bug fix: some LOOP statements couldn't be compiled.
810 * bug fix: sb-sequence:dosequence works on literal vectors.
811 * bug fix: errors in generic arithmetic show the assembly routine's
812 caller on x86 and x86-64. (lp#800343)
813 * bug fix: Compile-time type errors should never result in COMPILE-FILE
815 * bug fix: Known bad local calls do not cause strange failures when
816 emitting or dumping code. (lp#504121)
817 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
818 codegen errors: type checks are inserted as necessary. (lp#1177703)
819 * bug fix: Unsigned modular arithmetic is correctly converted into signed
820 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
821 * bug fix: a combination of inlined local function with &optional and
822 recursion no longer causes undescriptive compiler errors. (lp#1180992)
823 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
824 when testing for non-zero-ness.
825 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
827 * bug fix: Type mismatch for the value of conditional expressions are
828 correctly reported when detected at compile-time, instead of complaining
829 about a constant NIL (similar for non-EQ-comparable catch tags).
830 * bug fix: Referring to INLINE global functions as values should not result
831 in a compilation failure. (lp#1035721)
832 * optimization: faster ISQRT on fixnums and small bignums
833 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
834 * optimization: On x86-64, the number of multi-byte NOP instructions used
835 for code alignment is now always minimal.
836 * optimization: On 64-bit targets, the compiler generates much faster
837 code for type checks for types known at compile time that are smaller
838 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
839 their COMPLEX variants.
840 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
841 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
842 * optimization: ROOM no longer conses so egregiously on non-x86oid
844 * optimization: associative bitwise operations reassociate patterns like
845 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
847 * optimization: quasiquote expressions now perform more constant folding,
848 instead of consing equal lists at runtime. (lp#1026439)
849 * optimization: local call analysis of inlined higher-order function
850 should converge more quickly, resulting in better code for complex
852 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
853 integer constants are handled more cleverly, especially when they
854 can be represented as sign-extended (signed-byte 32). (Based on a
855 patch by Douglas Katzman)
856 * optimization: IF/IF conversion should reliably result in sane code
857 when (some of) the results of the inner IF are always false or
859 * optimization: On x86oids, variable right shifts of machine words are
860 compiled into straight SAR/SHR, instead of going through the generic
863 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
864 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
866 * bug fix: :allocation slot option works for condition slots
868 * bug fix: redefining conditions does not lead to multiple evaluations of
869 hairy slot initfunctions anymore (lp#1164969)
870 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
872 * bug fix: function constants now work as initforms and default initarg
873 values of conditions (lp#539517)
874 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
875 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
876 * bug fix: no more bogus ## references when pretty printing backquoted
877 forms with non-trivial structure sharing. (lp#1161218)
878 * bug fix: Don't signal an error on (setf (documentation nil 'function)
879 "doc"). Signal a style-warning instead when trying to set documentation
880 of NIL for all other documentation types. (Reported by Zach
881 Beane; regression since 2e52fa05.)
882 * bug fix: modular arithmetic involving large constants and conditionals
883 should no longer result in spurious dead code elimination. (Reported by
885 * bug fix: our mach exception handler can seemingly called very early in
886 the program execution process on OS X 10.8.0. Try and handle that case
887 robustly, without potentially leaking mach ports too much.
888 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
890 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
891 * enhancement: the continuable error when defknown-ing over extant
892 fndb entries can be ignored by passing :overwrite-fndb-silently t
893 as a keyword argument to sb-c:defknown (after attributes). Useful
894 to allow defknown to be re-loaded. Use with :allow-other-keys t
895 for backward compatibility.
896 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
898 * bug fix: Prevent a make-array transform from modifying source forms
899 causing problems for inlined code. Thanks to Bart Botta.
900 (regression since 1.0.42.11-bis)
901 * bug fix: clear-output calls the correct gray stream routine,
902 sb-gray:stream-clear-output. (lp#1153257)
903 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
905 * bug fix: Better error messages for package operations (lp#1154776)
906 * bug fix: delete-package on a nonexistent package should signal a cerror.
907 (regression since 1.0.37.44).
908 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
909 (lp#1154946, lp#1072112)
910 * bug fix: compiling make-array no longer signals an error when the
911 element-type is an uknown type, a warning is issued instead.
912 Thanks to James Kalenius (lp#1156095)
913 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
914 produces wrong results for some inputs. (Thanks to Jan Moringen.)
917 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
918 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
920 * new feature: package local nicknames. See manual for details.
921 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
922 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
923 * enhancement: easier to use restarts for resolving name-conflicts
924 resulting from IMPORT, EXPORT, or USE-PACKAGE.
925 * enhancement: variant DEFPACKAGE forms now signal a full error with
926 restarts provided for resolving the situation. (lp#891351)
927 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
928 DEFPACKAGE forms can now signal a full error with restarts provided for
929 resolving the situation. See manual for details. (lp#891351)
930 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
931 (Thanks to Anton Kovalenko.) (lp#1102748)
932 * enhancement: backtrace improvements
933 ** secondary CLOS dispatch functions have better debug names (lp#503081)
934 ** easier to read method names in backtraces. See
935 SB-DEBUG:*METHOD-FRAME-STYLE*.
936 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
937 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
938 SB-DEBUG:BACKTRACE-AS-LIST.
939 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
940 information is available in less intrusive form as frame annotations.
941 * enhancement: SB-POSIX now provides MAP-ANON.
942 * enhancement: test-suite results are colorized, failures in red, unexpected
943 success in green. Works on Windows and on terminals with ANSI escape code
944 support. Can be disabled with --no-color.
945 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
946 (thanks to James M. Lawrence)
947 * bug fix: no more unused variable style warnings from RESTART-CASE
948 macroexpansion (lp#1113859)
949 * bug fix: no more unused variable style warnings when loading
950 sb-bsd-sockets.asd (lp#1114681)
951 * bug fix: deleting a package removes it from implementation-package
952 lists of other packages.
953 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
954 This does not fix the occasional "interrupt already pending" issue, though.
955 * bug fix: (setf (documentation 'x 'function)) and
956 (setf (documentation #'x t)) set documentation in different places.
957 (regression since 1.0.43.63)
958 * bug fix: build on newer glibc. (lp#1095036)
960 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
961 * optimization: LOOP expressions using "of-type character" have slightly
962 more efficient expansions.
963 * bug fix: very long (or infinite) constant lists in DOLIST do not result
964 in very long compile times or heap exhaustion anymore. (lp#1095488)
965 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
966 * bug fix: adjust-array ignored :initial-element for simple-vectors.
968 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
969 longer cause infinite loops (on circular data) or violate eqlity
970 constraints. (lp#1099708)
971 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
973 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
974 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
976 * enhancement: support for C-c to interrupt the foreground thread
977 on Windows. (Thanks to Anton Kovalenko.)
978 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
979 * enhancement: Safepoint builds on POSIX platforms can now optionally be
980 built without pseudo-atomic sequences and their run-time overhead.
981 * enhancement: Threads created outside of Lisp can enter Lisp through
982 alien callbacks and appear as Lisp threads for the duration of that
983 function invocation. On safepoint builds only.
984 * enhancement: Miscellaneous improvements to namestrings and underlying
985 calls to OS functions for file system access on Windows. (Thanks to
987 * enhancement: The MSI installer support for Windows now uses Windows
988 Installer XML at least version 3.5 and includes various usability
989 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
990 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
991 on Windows. (Thanks to Anton Kovalenko.)
992 * enhancement: The Windows backend now supports the x86-64 platform.
993 (Thanks to Anton Kovalenko.)
994 * bug fix: fasls are now once again directly executable (on platforms
995 supporting shebang lines, with a suitably-installed sbcl).
996 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
997 * bug fix: Fix CAS access to slots of direct instances of structure classes
998 in the presence of subclasses sharing the same conc-name.
999 * bug fix: Logical pathname namestrings on Windows have been changed to
1000 be lower-case, to minimize differences between POSIX and Windows.
1002 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
1003 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
1004 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
1005 (NT 5.0) is no longer being maintained.
1006 * notice: Starting with this version, SBCL on Windows no longer supports
1007 building with disabled thread support.
1008 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
1009 * enhancement: New feature sb-dynamic-core allows the runtime to be
1010 rebuilt or relocated without requiring changes to the core file on
1011 all linkage table platforms. Required on Windows. (Thanks to Anton
1013 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
1014 * enhancement: I/O on Windows unnamed pipes is interruptible
1015 asynchronously using interrupt-thread, timers when running on Windows NT
1016 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
1018 * enhancement: Support for the experimental safepoint-based stop-the-world
1019 protocol on the PowerPC platform.
1020 * bug fix: Non-blocking reads from the Windows console were not necessarily
1021 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
1022 * bug fix: stability of threads on Windows has been improved upon through
1023 an updated stop-the-world protocol (thanks to Anton Kovalenko).
1025 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
1026 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
1027 (COMPILE and COMPILE-FILE still do.)
1028 * optimization: the SPARC backend now supports the precise generational
1029 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
1030 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
1031 * enhancement: add experimental support for the SB-THREAD feature and the
1032 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
1033 Threads are enabled by default, and this version of SBCL is considered
1034 to be the last and final release to officially support building with
1036 * optimization: The compiler no longer rotates loops in some cases where
1037 this transformation actually lead to worse code being generated.
1038 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
1039 symbol-macros by lexical bindings.
1040 * bug fix: stack allocation was prevented by high DEBUG declaration in
1042 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
1043 (thanks to SANO Masatoshi)
1044 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
1045 :JUNK-ALLOWED was true.
1046 * bug fix: type derivation inferred overly conservative types for
1047 unions of array types. (lp#1050768)
1049 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
1050 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
1051 source annotation of DISASSEMBLE output. Defaults to T.
1052 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
1053 WAIT-P argument added to WITH-RECURSIVE-LOCK.
1054 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
1056 * enhancement: Optional features (not enabled by default) allow the
1057 use of signals for inter-thread synchronization to be reduced on certain
1058 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
1059 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
1060 to test these experimental features. Known remaining bugs include minor
1061 thread safety issues, less timely freeing of memory by GC, and certain
1062 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
1063 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
1064 comparisons, particularly on almost-sorted inputs.
1065 * bug fix: Reading floats with large exponents no longer takes too much time
1066 before reporting that the exponent is too large.
1067 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
1068 correctly when the received datagram is larger than the provided buffer.
1069 (lp#1023438, thanks to Robert Uhl)
1070 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
1071 a SYMBOL-VALUE form with a constant symbol argument.
1072 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
1073 into a DEFCAS defined place was used as the place.
1074 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
1075 for from bit-vectors.
1076 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
1077 lead to internal errors or crashes (lp#1058799).
1078 * documentation: a section on random number generation has been added to the
1081 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
1082 * enhancement: implicit generic function warnings now specify the package
1083 in which the new generic function is being created.
1084 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
1085 updates of CAS-able places (similar to Clojure's swap!).
1086 * enhancement: run-program no longer decodes and re-encodes environment when
1087 :environment argument is not provided. (lp#985904)
1088 * enhancement: errors during compiler-macro expansion no longer cause
1089 runtime errors, only a compile-time warning, otherwise behaving as if
1090 the compiler macro had declined to expand.
1091 * optimization: On x86-64, code alignment of block headers is done with
1092 multi-byte NOPs now instead of repetitions of the single-byte NOP.
1093 * optimization: MAP-INTO is substantially faster when the target sequence is
1094 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
1095 thanks to James M. Lawrence)
1096 * optimization: the compiler no longer heap-conses to check exits in cases
1097 where the exit function is dynamic extent, or when it can prove the exit
1098 function cannot escape. (lp#1002534)
1099 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
1100 element type, and vectors that aren't SIMPLE-ARRAYs.
1101 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
1102 speed (around 1/3 the time in some cases), and a little better in terms of
1103 comparison calls. (Thanks to Takeru Ohta)
1104 * bug fix: On SPARC, a limitation on the number of code constants emittable
1105 by the compiler has been lifted, allowing certain long functions to
1106 compiled and assembled which had previously been unsupported; fixes
1107 cl-bench on this ISA (lp#1008996).
1108 * bug fix: potential for infinite recursion during compilation of CLOS slot
1109 typechecks when dependency graph had loops. (lp#1001799)
1110 * bug fix: error forms reported with some program-errors were not escaped
1112 * bug fix: functions from EVAL are now on more equal footing with functions
1113 from COMPILE. (lp#1000783, lp#851170, lp#922408)
1114 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
1115 objects as its :METHOD-COMBINATION argument, not just lists designating
1116 method combinations. (lp#936513)
1117 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
1119 * bug fix: restore build on solaris/sparc. (lp#1008506)
1120 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
1121 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
1122 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
1123 as keyword arguments no longer accidentally match unevaluated symbols
1125 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
1126 parameter was zero, now it signals an error. (lp#905817, fixed since
1128 * bug fix: run-program with :pty t no longer makes the pty as the process's
1129 controling terminal.
1130 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
1133 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
1134 * RANDOM enhancements and bug fixes:
1135 ** bug fix: the range and distribution of random integers could be
1136 catastrophically wrong when the compiler derived the type of its
1137 argument as a disjoint set of small integers.
1138 ** bug fix: the distribution of random integers is now completely
1139 uniform even when the specified limit is not a power of two.
1140 (Previously some values could be about 0.1 % more probable than
1141 others in the worst case.) (lp#309467)
1142 ** RANDOM on large integer arguments is generally faster and conses
1143 less than before; this is visible for fixnums above a length of
1144 about 24 bits, but extremely so for bignums: the old implementation
1145 used time and space quadratical in the size of the argument there,
1146 the new one is linear.
1147 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
1148 main entry point, SB-EXT:QUIT is deprecated.
1149 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
1150 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
1151 * enhancement: FASL loading no longer grabs the world-lock.
1152 * enhancement: GENCGC reclaims space more aggressively when objects being
1153 allocated are a large fraction of the total available heap space.
1155 * enhancement: backtraces show the correct number of arguments for frames
1156 called with too many arguments.
1157 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
1159 * enhancement: ASDF has been updated 2.21.
1160 * optimization: fewer uses of full calls to signed modular functions.
1162 * optimization: typechecking alien values is typically 5 x faster.
1163 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
1165 * bug fix: file compilation performance issues when dumping subtypes
1166 of CHARACTER (lp#994487)
1167 * bug fix: fixed disassembly of some SSE instructions on x86-64.
1168 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
1169 OPEN. (lp#969352, thanks to Kambiz Darabi)
1170 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
1172 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
1173 classoid even if X was not the proper name of the class. (lp#941102)
1174 * bug fix: declaration leakage between lexical environments due to careless
1175 use of NCONC in MAKE-LEXENV. (lp#924276)
1176 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
1177 *default-pathname-defaults* contains NAME or TYPE components.
1178 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
1179 from CL package, e.g. (loop . 10).
1180 * bug fix: run-program with existent or non-existent files for :output or
1181 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
1182 returns NIL instead of signalling an obscure error.
1183 * bug fix: fix miscompilation of some logand forms with large constant
1184 arguments. (lp#974406)
1185 * bug fix: account for funcallable-instance objects properly in ROOM.
1186 * bug fix: incorrect octets reported for c-string decoding errors.
1188 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
1190 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
1191 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
1192 allowing faster release of memory back to the OS. (lp#991293)
1193 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
1194 existing deadline for the dynamic scope of its body.
1195 * bug fix: compiler-internal interval arithmetic needed to be more
1196 conservative about open intervals when operated on by monotonic but not
1197 strictly-monotonic functions. (lp#975528)
1198 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
1199 it's also slightly faster. (lp#998926)
1200 * bug fix: better error messages for malformed declarations.
1202 * bug fix: define-condition didn't return the name of the defined condition.
1204 ** improved docstrings: REPLACE (lp#965592)
1206 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
1207 * bug fix: fix copy-structure. When copying from stack to heap, garbage
1208 could end up in the heap making GC unhappy.
1209 (Thanks to James Knight, lp#911027)
1211 ** SBCL can now be built using Clang.
1212 ** ASDF has been updated 2.20.
1213 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
1214 * bug fix: don't complain about a too-hairy lexical environment for inlining
1215 when the function has never been requested for inlining. (lp#963530)
1217 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
1218 * enhancements to building SBCL using make.sh:
1219 ** --fancy can be specified to enable all supported feature enhancements.
1220 ** --with-<feature> and --without-<feature> can be used to specify
1221 which features to build with.
1222 ** --arch option can be used to specify the architecture to build for.
1223 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
1224 full-blows cross-compilation.)
1225 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
1226 which allows specifying name of the default interning package for the
1228 * enhancement: when *READ-EVAL* is true, arrays with element type other than
1229 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
1230 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
1231 null alien when malloc() fails. (lp#891268)
1232 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
1233 conditions can be conveniently accessed through function with the same
1234 name, analogously to CONTINUE.
1235 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
1236 from the printer by type, causing an error marker to be printed instead.
1237 (Thanks to Attila Lendvai)
1238 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
1239 generally behave better when errors occur during printing.
1240 * enhancement: the test runner now takes a --report-skipped-tests argument
1241 to report the individual tests skipped as well as the number of skipped
1243 * enhancement: undefined functions now appear in backtraces as ("undefined
1244 function") instead of ("bogus stack frame") on x86oids.
1245 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
1246 deadlock errors are reported in an easier-to-decipher manner.
1247 * enhancement: DESCRIBE on type designators reports the expansion in more
1249 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
1250 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
1251 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
1252 * enhancement: better disassembly of segment-prefixes on x86 and other
1253 instruction prefixes (e.g. LOCK) on x86 and x86-64.
1254 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
1255 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
1256 * optimization: SUBSEQ on vectors of unknown element type is substantially
1258 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
1259 be stack-allocated. (lp#902351)
1260 * optimization: the compiler is smarter about representation selection for
1261 floating point constants used in full calls.
1262 * optimization: the compiler no longer refuses to coerce large fixnums to
1263 single floats inline, except on x86 where this limitation is still
1265 * optimization: truncation operations on integers with constant divisor
1266 arguments 1 and -1 are optimized away.
1267 * bug fix: deadlock detection could report the same deadlock twice, for
1268 two different threads. Now a single deadlock is reported exactly once.
1269 * bug fix: interval-arithmetic division during type derivation did not
1270 account for signed zeros.
1271 * bug fix: compiler error when typechecking a call to a function with
1272 non-constant keyword arguments.
1273 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
1274 * bug fix: condition slot accessors no longer cause undefined function
1275 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
1276 form that defines them. (lp#896379)
1277 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
1278 by ANSI. (lp#894202)
1279 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
1280 bogusly report NIL, T.
1281 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
1282 required arguments ignored and performed assignments to others.
1284 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
1285 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
1286 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
1287 * bug fix: redefining a function whose previous definition contained an
1288 unknown type no longer causes a style-warning. (lp#806243)
1289 * bug fix: undefined functions now appear in backtraces as ("undefined
1290 function") instead of ("bogus stack frame") on non-x86oids.
1291 * bug fix: backtraces are no longer cut off at ("undefined function") when
1292 called under certain circumstances (involving a caller-allocated stack
1294 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
1295 systems. (regression since 1.0.53)
1296 * bug fix: GC deadlocks from dladdr() on certain platforms.
1297 * bug fix: broken standard streams no longer automatically cause recursive
1298 errors on debugger entry.
1299 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
1300 (regression since 1.0.53)
1301 * bug fix: attempts to stack allocate a required argument to a function with
1302 an external entry point caused compiler-errors.
1303 * bug fix: compiler notes for failed stack allocation for a function argument
1304 no longer claim to be unable to stack allocate the function.
1305 * bug fix: COERCE now signals a type-error on several coercions to
1306 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
1307 * bug fix: missing failure-to-stack-allocate compiler notes for some
1308 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
1309 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
1311 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
1313 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
1314 * minor incompatible changes:
1315 ** RENAME-FILE on a symbolic links used to rename the linked-to file
1316 instead of the link.
1317 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
1318 directory, but now signal an error instead. Use TRUENAME to resolve the
1319 pathname if you wish to delete the linked directory, and DELETE-FILE if
1320 you wish to delete the
1321 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
1322 symbols associated with it will trigger a compile-time warning.
1323 * thread-related enhancements:
1324 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
1325 Many thanks to generous donors!)
1326 ** Threading is now more reliable on non-Linux platforms. We still don't
1327 consider threads on non-Linux platforms good enough to enable them by
1328 default, but they're in a clearly better shape now.
1329 ** Deadlines supported now on all platforms.
1330 ** All blocking functions in the threading API now have a :TIMEOUT
1332 ** Semaphore notification objects have been added to SB-THREAD.
1333 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
1334 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
1335 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1336 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
1337 using an API anologous to defining new SETFable places.
1338 * GC-related enhancements and bug fixes:
1339 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
1340 and Gb suffixes. Default is megabytes as before.
1341 ** on GENCGC targets, the default dynamic space size is now 512Mb for
1342 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
1343 exception, defaulting to mere 444Mb to fit under default ulimits.) The
1344 new defaults are in place to prevent hitting swap on low-end systems.
1345 Use build-time option --dynamic-space-size to build an SBCL with
1346 another default, or the runtime option to adjust the size at startup: a
1347 good size is at most equal to the amount of physical memory the system
1349 ** on GENCGC targets, nursery and generation sizes now default to 5% of
1351 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
1352 refuses to create SIMPLE-FUN objects.
1353 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
1355 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
1356 validation of pointer objects as GENCGC does, instead of a
1357 comparatively weak bounds-check against the heap spaces.
1358 * SB-BSD-SOCKETS bug fixes:
1359 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
1360 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
1361 systems with getaddrinfo().
1362 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
1363 safe outside systems with getaddrinfo().
1364 * enhancement: ASDF has been updated 2.019.
1365 * enhancement: special-case TCO prevention for functions which never return
1366 extended to untrusted types, keeping one more frame's worth of debug
1367 information around in many cases.
1368 * enhancement: debug-names of anonymous and local function are more
1369 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
1370 * enhancement: on win32, ABS of complex floats guards better against
1371 overflows. (lp#888410)
1372 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
1373 process exiting with code 1. (lp#676987)
1374 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
1375 the system where on the filesystem the SBCL sources themselves are
1376 located. (Thanks to Zach Beane)
1377 * enhancement: the compiler is now able to derive tighter bounds for
1378 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
1379 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
1380 correctly, even on wide-fixnum builds. (lp#887220)
1381 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
1382 resolved to directories.
1383 * bug fix: type mismatch when assigning to lexical variables no longer
1384 result in fasl-dumping internal type objects. (lp#890750)
1385 * bug fix: type mismatch on (SETF AREF) and function return values no
1386 longer result in fasl-dumping internal type objects.
1387 * bug fix: With several combinations of argument types, for example (EXPT
1388 <integer> <(complex double)>), EXPT now uses double-precision throughout
1389 instead of partially calculating only to single-precision. (lp#741564;
1390 thanks to Lutz Euler)
1391 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
1392 objects when interrupted by GC on PPC.
1394 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
1395 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
1396 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
1397 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
1398 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
1399 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
1400 targets is now 63 bits (up from 61).
1401 * enhancement: DESCRIBE now reports a lambda-list and source location
1402 for complext setf-expanders.
1403 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
1404 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
1405 of multiple-valued places to be set to NIL, instead of signalling an
1406 error (per a careful reading of CLHS 5.1.2.3).
1407 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
1408 * bug fix: repair crash in x86oid darwin signal handling emulation
1409 when built with certain compilers.
1410 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
1411 rotation arguments on x86-64. (lp#882151)
1412 * bug fix: low-level control flow optimisations could result in bogus
1413 code in functions with tail and non-tail calls to local functions on
1414 x86oids. (lp#883500)
1415 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
1416 to emit literal characters > (code-char 4095), for comparisons with
1417 constant characters.
1418 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
1419 on 64 bit platforms. (lp#881445)
1420 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
1421 delete the wrong file when using relative pathnames. (lp#882877)
1422 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
1423 sequences and :KEY NIL.
1425 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
1426 * enhancement: ASDF has been updated to version 2.017.
1427 * enhancement: the --core command line option now accepts binaries with
1429 * enhancement: when built with :sb-core-compression, core files (regular
1430 or executable) can be compressed with zlib. Use the :COMPRESSION
1431 argument to SAVE-LISP-AND-DIE to specify a compression level.
1432 * enhancement: --[no-]merge-core-pages determines whether the runtime
1433 hints the operating system that identical core pages between SBCL
1434 processes should share the same physical memory. Default is to only
1435 enable this for compressed cores.
1436 * optimization: SLEEP no longer conses.
1437 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
1438 or bit-vectors when using the standard pretty-print dispatch table.
1439 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
1441 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
1442 AREF, CHAR, etc. (lp#826971)
1443 * bug fix: compiler-errors causes by integer arguments with composed of
1444 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
1445 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
1446 expressions. (lp#770184)
1447 * bug fix: complex single float literals are correctly aligned when used
1448 as arguments of arithmetic operators.
1449 * bug fix: on 32-bit platforms, rounding of double floats larger than a
1450 fixnum is correct. (reported by Peter Keller)
1451 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
1452 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
1454 * bug fix: redefining classes such that slots with custom allocation are
1455 added or removed works again.
1457 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
1458 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
1459 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
1460 MAKE-SOCKET-STREAM if using SERVE-EVENT.
1461 * enhancement: added support for socket keepalive timeout intervals
1462 and probe counts on Linux.
1463 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
1464 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
1465 * enhancement: added new toplevel options --quit and --non-interactive
1467 * enhancement: the Windows port of SBCL now builds and runs on Wine
1468 (thanks to Anton Kovalenko).
1469 * enhancement: more, and more correct, SSE instruction definitions on
1470 x86-64 (thanks to Alexander Gavrilov).
1471 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
1472 to help the processor execute spin loops, when applicable. Currently
1473 implemented for x86 and x86-64.
1474 * optimization: unsigned integer divisions by a constant are implemented
1475 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
1476 * optimization: improved type-derivation for LOAD-TIME-VALUE.
1477 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
1478 instructions. (lp#814688)
1479 * bug fix: COERCE to unfinalized extended sequence classes now works.
1480 (reported by Jan Moringen; lp#815155)
1481 * bug fix: a compiler error during typecheck generation, reported by Eric
1482 Marsden. (lp#816564)
1483 * bug fix: obsolete instance protocol fires when shared slots are added
1485 * bug fix: fixed-format floating point printing with scaling factors.
1487 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
1488 backtraces. (lp#818460)
1489 * bug fix: better backtraces for interrupted syscall frames on x86.
1491 * bug fix: SSE comparison instructions can be disassembled even when one
1492 operand is in memory. (lp#814702)
1493 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
1494 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
1495 type information associated with the VALUES form.
1496 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
1498 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
1499 first write (lp#561642).
1500 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
1501 * bug fix: bound propagation involving conversion of large bignums to
1502 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
1504 * bug fix: &REST to &MORE conversion still works in unsafe call to known
1505 functions; reported by Lutz Euler (lp#826459).
1506 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
1509 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
1510 * enhancement: errors from FD handlers now provide a restart to remove
1511 the offending handler.
1512 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
1514 * enhancement: location of user or system initialization file can now easily
1515 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
1516 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
1517 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
1518 the thunk, as a keyword argument, :arguments.
1519 * enhancement: constraint propagation is simplified (and sped up) when
1520 COMPILATION-SPEED > SPEED.
1521 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
1522 * enhancement: debugger understands &MORE arguments better.
1523 * optimization: extracting bits of a single-float on x86-64 has been
1524 optimized. (lp#555201)
1525 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
1526 when (> SPEED SPACE).
1527 * optimization: local call trampolines (x86 and x86-64) are emitted
1529 * optimization: implicit value cells for dynamic-extent closed-over bindings
1530 on x86 and x86-64 can hold unboxed values as well.
1531 * meta-optimization: improved compilation speed, especially for large
1532 functions. (lp#792363 and lp#394206)
1533 * bug fix: bound derivation for floating point operations is now more
1534 careful about rounding possibly closing open bounds. (lp#793771)
1535 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
1536 backwards incompatible change in 1.0.48.27)
1537 * bug fix: occasional debugger errors in when a type-error occured in a
1538 function with dynamic-extent &rest list.
1539 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
1540 boa-construtors can be used to initialized structure slots.
1541 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
1542 (lp#795705, regression)
1543 * bug fix: DIRECTORY works better on logical pathnames.
1544 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
1545 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
1546 * bug fix: the compiler no longer constant-folds NaNs in
1547 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
1548 * bug fix: FORMAT now handles floating point rounding correct, eg.
1549 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
1551 * bug fix: style warning during lambda-list introspection of generic
1552 functions with both optional and key argments.
1553 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
1554 folding. (lp#729765)
1555 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
1558 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
1559 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
1560 interrupts for its body.
1561 * enhancement: source locations are now available for files loaded as
1562 source, compile-time-too evaluation, and initialization files.
1563 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
1564 virtual source-file information, eg. overriding input-file of COMPILE-FILE
1565 when a temporary file is used for compilation.
1566 * enhancement: ASDF has been updated to version 2.015.3.
1567 * enhancement: backtraces involving frames from the default evaluator are
1569 * enhancement: RUN-PROGRAM works with user-defined binary input and output
1571 * enhancement: more informative compile-time warnings and runtime errors for
1572 type-errors detected at compile-time.
1573 * enhancement: deadlock detection for mutexes and spinlocks.
1574 * enhancement: dynamic-extent for &rest lists stack allocate only their
1575 spines, not their argumets. While portable code should not rely on this,
1576 particularly in combination with inlining, it should make dynamic-extent
1577 easier to use safely.
1578 * enhancement: SB-POSIX improvements:
1579 ** WNOHANG and WUNTRACED are exported.
1580 ** SYSCALL-ERROR now also provides the name of the failing system call.
1581 * enhancement: --script improvements:
1582 ** errors on standard input, output, and error streams are handled and
1583 cause scripts to exit silently, making them easier to use in shell
1585 ** backtraces from scripts now go to standard error instead of the
1586 terminal even if one is available.
1587 ** --script can be an argument, causing the script to be loaded from
1589 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
1590 strings to foreign memory.
1591 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
1592 a file, making it easier to understand heap dynamics.
1593 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
1594 allows the compiler to automatically elide rest-list allocation so long as
1595 the call sites are in functions that the compiler knows cannot escape.
1597 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
1598 especially in safe code when none of the required arguments have changed
1600 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
1601 uninterruptible, as well as blocking reads from socket streams created
1602 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
1603 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
1604 from the to-char if the from-char is not a dispatch-macro character.
1605 * bug fix: references to undefined variables in function calls that are
1606 optimized away now signal a runtime error. (lp#722734)
1607 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
1608 types from a function defined in the same file. (regression from
1610 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
1612 * bug fix: spurious errors during QUIT when standard streams were closed.
1614 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
1615 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
1616 years, is now no longer supported.
1617 * enhancement: read() and write() have been added to SB-POSIX.
1618 * enhancement: types of DEFSTRUCT constructors are proclaimed more
1619 accurately, allowing better typechecking of call-sites.
1620 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
1621 are no longer caught. (reverted to pre 1.0.34 behaviour)
1622 * optimization: slightly faster ISQRT. (lp#713343)
1623 * bug fix: better support for Solaris /bin/sh in sh-based tests.
1624 * bug fix: TRACE behaves better when attempting to trace undefined
1625 functions. (lp#740717)
1626 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
1627 to (FUNCALL #'(LAMBDA ...) ...).
1628 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
1629 a compile-time error. (lp#720382)
1630 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
1632 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
1633 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
1634 optimization. (regression from 1.0.45.18/1.0.46.15)
1635 * bug fix: package locks did not protects against compile-time side-effects
1636 of DEFUN. (lp#675584)
1637 * bug fix: --dynamic-space-size argument is validated more carefully.
1639 * bug fix: memory fault from printing a malformed simple-condition.
1641 * bug fix: redefining classes so that slot-definition classes change now
1642 engages the obsolete instance protocol. (lp#766271)
1643 * bug fix: constant improper lists could break source coverage recording.
1645 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
1646 could exhaust stack.
1648 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
1649 * bug fix: fix mach port rights leaks in mach exception handling code on
1650 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
1652 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
1653 * enhancement: redefinition warnings for macros from different files. (lp#434657)
1654 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
1655 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
1656 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
1657 processed using EVAL -- now the appropriate toplevel form is reported instead.
1658 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
1659 declarations. (lp#726331)
1660 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
1661 that NIL/NULL is excluded from the type.
1662 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
1664 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
1665 and its compatriots.
1666 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
1667 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
1668 stack-allocated values out of their dynamic-extent. (lp#310175)
1669 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
1670 x86-64 builds caused a type-error.
1671 * bug fix: calling COMPILE with something else than a lambda-expression as the
1672 second argument reports a more sensible error. (lp#718905)
1673 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
1674 are detected. (lp#520607)
1675 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
1677 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
1678 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
1679 methods. (regression from 1.0.45.18)
1680 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
1681 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
1682 * bug fix: several foreign functions accepting string also accepted NIL and
1683 consequently caused a memory fault at 0 now signal a type-error instead.
1685 * bug fix: under rare circumstances, constraint propagation could rewrite a
1686 variable reference to refer to a variable not in scope, causing an error
1687 during physical environment analysis when attempting to close over the
1688 variable. (lp#551227)
1689 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
1691 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
1692 * enhancement: largefile support on Solaris.
1693 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
1694 arguments (lp#710017)
1695 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
1696 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
1698 * optimization: ERROR and CERROR are approximately 5 times faster.
1699 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
1700 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
1701 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
1702 up instance creation in those cases.
1703 * optimization: arithmetic operations with multiple constant arguments in now
1704 have them reduced at compile-time. (lp#676414)
1705 * optimization: determining current character position on string-streams for
1706 pretty-printing was overly slow.
1707 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
1708 lifetime analysis to overwrite closed-over variables (lp#681092).
1709 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
1710 were not handled correctly (lp#713063).
1711 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
1713 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
1714 mistake. (lp#667297).
1715 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
1716 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
1717 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
1718 unintern the wrong symbol with the same name. (lp#693796)
1719 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
1720 making it possible to restore the initial table if it has been messed up.
1723 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
1724 * enhancement: ~/ and ~user/ are treated specially in pathnames.
1725 Refer to documentation for details.
1726 * enhancement: ASDF has been updated to version 2.010.
1727 * optimization: mutated closed-over variables that are only accessed by
1728 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
1729 declared to be DYNAMIC-EXTENT) are stored directly in their containing
1730 stack frame, rather than allocating a VALUE-CELL (lp#586103).
1731 * optimization: UNWIND-PROTECT cleanup functions are now declared
1733 * bug fix: backtracing function with &REST arguments now shows the full
1734 argument list. (lp#310173)
1735 * bug fix: return types for functions with complex lambda-lists are now
1736 derived properly (lp#384892)
1737 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
1738 long string arguments slowed the compiler down to a crawl.
1739 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
1740 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
1741 in the DEFMETHOD body.
1742 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
1743 messages, being instead replaced with the corresponding function name.
1744 * bug fix: don't derive overly complex unions of numeric types for arithmetic
1745 operators. (lp#309448)
1747 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
1748 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
1749 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
1750 * enhancement: ALLOCATION-INFORMATION also provides the page the object
1752 * enhancement: default dynamic-space size can be configured at build-time
1753 without touching source, using the --dynamic-space-size argument to make.sh.
1754 * enhancement: DESCRIBE recognizes symbols naming optimization policy
1755 qualities, and mentions ALWAYS-BOUND declarations.
1756 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
1758 * enhancement: ASDF has been updated to 2.009.
1759 * enhancement: the system detects known type-erros in calls better,
1760 signalling a full warning about violated proclaimed FTYPEs and violations
1761 of derived FTYPEs within the same file, including self-calls.
1762 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
1763 * optimization: constant-folding exploits numeric and character types, in
1764 addition member types.
1765 * optimization: numeric, character and member types that are inhabited by
1766 exactly one value are tested with EQL.
1767 * optimization: more conditional branches are eliminated during IR1.
1768 Branches are simplified before performing if/if-conversion, and simple
1769 equivalent branches (that only read the same constant or variable) are
1771 * improvements to the Windows port:
1772 ** change: canonical unparsing form for pathname namestrings now uses / as
1773 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
1774 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
1775 on Windows. (thanks to Kalyanov Dmitry)
1776 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
1778 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
1779 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
1780 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
1781 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
1783 * bug fix: interrupts arriving during CL:OPEN caused an error.
1784 * bug fix: overeager character buffering could cause input to block
1785 spuriously when reading from a pipe (lp#643686)
1786 * bug fix: more efficient timer expiry should avoid starvation on systems
1787 where number of SIGALRMs per second is restricted. (lp#375515)
1788 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
1789 * bug fix: compile-times no longer scale linearly with the size of
1790 quoted lists in source-code. (lp#654289)
1791 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
1792 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
1793 so badly. (lp#654485)
1794 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
1795 an error for eg. STRUCTURE. (lp#458015)
1796 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
1797 (lp#613871, thanks to Roman Marynchak)
1798 * bug fix: more reliable &REST list type derivation. (lp#655203)
1799 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
1800 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
1801 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
1802 also declared NOTINLINE. (lp#655581)
1803 * bug fix: the compiler could attempt to emit constant left shifts of
1804 greater value than n-word-bits. (lp#309063)
1805 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
1806 type information for the function being set. (lp#659220)
1807 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
1808 containing self-calls were recompiled with a new signature, and failed
1809 to warn when a self-call using the old signature was left in. (lp#655126)
1810 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
1811 :DEFAULT when the default external had character size other than 8 bits.
1813 * bug fix: derived types of functions in the same file were implicitly
1814 trusted, leading to potential heap corruption when those function were
1815 defined incompatibly. (lp#657499)
1816 * bug fix: existing ASDF source registries are ignored when building
1817 contribs (lp#659105)
1818 * bug fix: short-form DEFSETF checks that the second argument is a symbol
1819 (lp#655824, thanks to Roman Marynchak)
1820 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
1821 package-lock violation was detected. (lp#660752)
1822 * bug fix: the system can store different docstrings for a single function
1823 under different names. (lp#661631, regression from 1.0.29.24)
1824 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
1825 properly. (lp#384801)
1826 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
1827 of specified length could confuse the type derivation in unsafe code.
1829 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1830 fork with multiple Lisp threads running is made on every platform,
1831 not just Darwin. (lp#451111)
1832 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1833 around when core was saved, which could cause undefined behaviour when the
1835 * bug fix: Allow UNTRACE of functions that are no longer defined
1836 (lp#667657, thanks to Attila Lendvai)
1837 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1838 compile-time warning (lp#664373, thanks to Stas Boukarev)
1840 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1841 * incompatible change: FD-STREAMS no longer participate in the serve-event
1842 event-loop by default. (lp#316072)
1843 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1844 affects streams from CL:OPEN.
1845 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1846 default, but this is liable to change: applications needing serve-event
1847 for socket streams should explicitly request it using :SERVE-EVENTS T
1849 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1851 * enhancement: CLOS effective method functions and defclass slot typechecking
1852 function now have debug names for use in backtraces and profiles.
1853 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1855 * enhancement: symbols are printed using fully qualified names in several
1856 error and warning messages which are often associated with package
1857 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1858 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1859 thanks to Andrew Golding)
1860 * bug fix: reading /proc files on Linux works. (lp#425199)
1861 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1863 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1864 breaking code that tried to write the value of a printer control variable.
1865 (lp#581564, thanks to Stas Boukarev)
1866 * bug fix: WRITE compiler macro did not handle output stream designators
1867 correctly. (lp#598374, thanks to Stas Boukarev)
1868 * bug fix: better availability of names of foreign functions in backtraces
1869 on Linux. (lp#626962, thanks to Stas Boukarev)
1870 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1871 lp#627581, thanks to Josh Elsasser and Jim Wise)
1872 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1873 thanks to Josh Elsasser)
1874 * bug fix: using aliases for builtin classes as defmethod specializers
1875 without adding DEFTYPEs for them works. (lp#618387)
1876 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1878 * bug fix: legally dynamic-extent lists and vectors used as
1879 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1880 * bug fix: inline-expansion creating references to dead lambda-variables
1881 (lp#454681, thanks to Alexey Dejneka)
1882 * bug fix: better error message for bogus numerical arguments to RANDOM.
1883 (lp#598986, thanks to Stas Boukarev)
1884 * bug fix: the compiler occasionally inlined references from incompatible
1885 environments occurs. (lp#308951)
1886 * bug fix: the compiler threw an error when trying to compile a local
1887 function (labels or flet) known to take a specialized complex argument.
1888 (not in launchpad, reported by sykopomp in #lispgames)
1889 * bug fix: package-locks failed to protect against compile-time effects of
1890 DEFUN when the symbol previously had a macro definition. (lp#576637)
1891 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1892 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1893 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1894 * bug fix: evaluation in debugger REPL works using the global context when
1895 in frames that do not have sufficient debug information.
1896 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1898 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1900 * bug fix: interrupt taking longer than the requested period caused SLEEP
1901 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1903 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1905 ** Cross-compilation host is now specified to make.sh using
1906 command-line argument --xc-host=<command> instead of a positional
1907 argument. (thanks to Daniel Herring)
1908 ** Install location can be specified to make.sh using command-line
1909 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1910 * optimization: The default implementation of
1911 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1912 * enhancement: Explicit memory barrier operations are now available for use
1913 by multithreaded code. See documentation for details.
1914 * enhancement: Experimental support for threading on Linux/PPC.
1915 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1916 * bug fix: EXPT signals an error if first argument is a zero and second
1917 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1918 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1919 (lp#576594, thanks to Roman Marynchak)
1920 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1921 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1923 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1924 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1925 cached, leading to many fewer expensive calls to
1926 COMPUTE-APPLICABLE-METHODS.
1927 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1928 CLASS argument, search for and call an appropriate optimized ctor function
1930 * bug fix: WRITE always returns the correct value.
1932 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1933 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1934 * bug fix: Name conflicts between symbols passed as arguments to a single
1935 call to IMPORT no longer add multiple symbols with the same name to the
1936 package (detectable via DO-SYMBOLS).
1937 * bug fix: support building without the dlshim on darwin x86 and x86-64
1939 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1941 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1942 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1944 * bug fix: linkage-table entries on PPC now no longer overflow their
1945 space allocation (potentially causing crashes if they are written out
1947 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1948 platforms, preventing the GC from seeing stale pointers on the control
1949 stack in subsequent GCs (which would, and does, break invariants).
1950 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1951 * bug fix: Literal characters with code points greater than about 32767
1952 now work on PPC UNICODE builds.
1953 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1954 high order bits are explicitly cleared out. In some contrived situations,
1955 this could lead to wrong results in mixed real/complex float arithmetic.
1956 * bug fix: Fix function/macro redefinition warnings when building with
1957 clisp. (lp#576787, thanks to Josh Elsasser)
1958 * new platform: experimental support for ppc/openbsd (thanks to Josh
1960 * bug fix: Floating-point traps now work on ppc/linux.
1962 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1963 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1964 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1965 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1966 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1967 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1968 SB-THREAD:GRAB-MUTEX.
1969 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1970 contain additional data structures and tools for concurrent programming;
1971 at the moment it contains a lock-free queue, and a lock-free mailbox
1973 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1974 GET-MUTEX but takes &key rather than &optional parameters. Also added
1975 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1977 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1978 SB-THREAD:WAIT-ON-SEMAPHORE.
1979 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1981 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1982 conditions to defer the deadline for forever.
1983 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1985 * enhancement: errors from NO-APPLICABLE-METHOD and
1986 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1987 generic function call.
1988 * enhancement: SB-BSD-SOCKET improvements
1989 ** sockets and socket streams now have a more informative printed
1990 representation based on the corresponding SOCKET-NAME and
1992 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1994 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1995 CL:CLOSE when appropriate, and no longer disassociates the stream
1996 from the socket if close failed. (lp#543951)
1997 * improvements to the instrumenting profiler
1998 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1999 ** optimization: counters no longer use locks for the overflow mode.
2000 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
2001 incurred an off-by-one miscount.
2002 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
2003 * enhancement: improved DEFMETHOD pretty-printing.
2004 * enhancement: perform range reduction when arguments are too large for
2005 x87's transcendentals (instead of returning 0). (lp#327192)
2006 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
2007 some of CL-PPCRE's macros. (lp#570079)
2008 * enhancement: our machine code is slightly less hostile to valgrind on
2010 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
2011 to Robert Swindells and Aleksej Saushev)
2012 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
2013 * bug fix: a rare case of startup-time page table corruption.
2014 * bug fix: a semaphore with multiple waiters and some of them unwinding due
2015 to timeouts could be left in an inconsistent state.
2016 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
2017 * bug fix: misoptimization of multiplication by one in
2018 (SB-C::FLOAT-ACCURACY 0) policies.
2019 * bug fix: miscounts in SB-PROFILE.
2020 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
2021 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
2022 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
2023 up itself" (March 2010) for further details.
2024 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
2025 against length of the list if the element is found before the specified
2026 END is reached. (thanks to Alec Berryman, lp#554385)
2027 * bug fix: errors signalled during package graph modification no longer
2028 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
2029 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
2030 :SB-DOC feature. (lp#552564)
2031 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
2032 * bug fix: more robust runtime executable path detection. (lp#375549)
2033 * bug fix: GCD always returns positive values. (lp#413680)
2034 * bug fix: Converting division to multiplication by reciprocal handles
2036 * bug fix: We were too eager in eliding range reduction tests on x87.
2037 The maximal magnitude is 2^63, not 2^64.
2038 * bug fix: Transforms for TRUNCATE don't die when the result is completely
2040 * bug fix: Maybe restore buildability on Alpha.
2041 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
2043 * bug fix: RANDOM-STATE can be printed readably again.
2044 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
2045 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
2046 types) could result in type mismatches during compilation.
2048 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
2049 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
2050 stack frame thrown from.
2051 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
2052 compiler optimization qualities inside dynamic extent of its body.
2053 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
2054 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
2056 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
2057 constraint propgation, allowing better compilation eg. when used to
2058 access structures with WITH-SLOTS. (lp#520366)
2059 * optimization: the compiler is now more aware of the type of the underlying
2060 storage vector for multidimensional simple arrays resulting in better code
2061 for accessing such arrays.
2062 * optimization: passing NIL as the environment argument to TYPEP no longer
2063 inhibits optimizing it. (lp#309788)
2064 * optimization: more efficient register usage when handling single-float
2065 arguments on x86-64. (thanks to Lutz Euler)
2066 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
2067 pre-allocated temporary vectors. (lp#496249)
2068 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
2069 in :INITIAL-CONTENTS. (lp#523612)
2070 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
2071 functions. (lp#524707)
2072 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
2073 WITH-SLOTS usages during compilation.
2074 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
2075 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
2076 all x86oid platforms with :UD2-BREAKPOINTS target feature.
2077 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
2078 instruction (tested on x86oid linux with ud2-breakpoints).
2079 * bug fix: slam.sh now works on win32.
2080 * bug fix: better differences of numeric types. (lp#309124)
2081 * bug fix: arrays declared intersection and union types can have their
2082 upgraded element type derived. (lp#316078)
2083 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
2084 threads started during profiling. (lp#472499)
2085 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
2087 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
2088 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
2089 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
2090 values instead of signaling an error. (lp#309093)
2091 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
2093 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
2094 declarations (lp#497321)
2095 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
2096 and failed to detect circular lists (lp#452008)
2097 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
2099 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
2100 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
2101 due to it, so that handlers can run.
2102 * bug fix: reparsing undefined types if they have become defined since
2103 parsing. (lp#309128)
2104 * bug fix: missing &REST type in a proclamation for a function with both
2105 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
2106 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
2107 expanded calls (lp#542174)
2108 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
2109 than just at toplevel form.
2111 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
2112 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
2113 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
2114 but work on type specifiers.
2115 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
2116 to name a type specifier.
2117 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
2118 specifier is valid where "valid" basically means "would be accepted as
2119 second argument of TYPEP".
2120 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
2121 returns the function's declared, or derived FTYPE.
2122 * new feature: SB-POSIX now supports accessing the d_ino member of
2123 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
2124 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
2125 provide for seeding a RANDOM-STATE object with user-provided data or
2126 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
2127 attempt to initialize the returned state from the operating system's
2128 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
2129 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
2130 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
2131 * bug fix: Fix grammar and style issues for the docstrings of
2132 printer-related variables and functions. (Thanks to mon_key; launchpad
2134 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
2136 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
2137 in a row even though a handler defered the deadline long into the
2139 * bug fix: A deadline handler was run without interrupts enabled for a
2140 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
2141 in infinitely spinning, non-killable threads.
2142 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
2143 before reaching the erring stack frame.
2144 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
2145 real power. (launchpad bug lp#525949)
2146 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
2147 GENCGC platforms. (launchpad bug lp#529014)
2148 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
2149 (launchpad bug lp#525916)
2150 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
2151 (Thanks to Robert Goldman)
2153 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
2154 * optimization: ROUND with a single single-float or double-float argument
2155 is properly inlined when possible.
2156 * optimization: Slightly better code is generated for integer<->float
2157 conversions and for single-float<->double-float conversions on x86-64.
2158 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
2159 code for 32-bit and 64-bit rotations on x86-64.
2160 * bug fix: The install script changes the ownership of directories as well
2161 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
2162 launchpad bug lp#508485)
2163 * bug fix: TRUNCATE with a single single-float or double-float argument is
2164 properly inlined when possible. (launchpad bug lp#489388)
2165 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
2166 no longer causes a compiler error on x86 and ppc.
2167 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
2168 always relative to *READTABLE* rather than the passed argument.
2170 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
2171 * minor incompatible change: threading support is now enabled by default
2173 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
2175 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
2176 are now caught and reported just like errors during macroexpansion.
2177 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
2178 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
2179 * enhancement: ASDF systems can now depends on SB-QUEUE.
2180 * fixes and improvements related to Unicode and external formats:
2181 ** bug fix: error handling and restart usage in the ucs-2 external format
2183 ** there is now an implementation of the ucs-4 external format.
2184 ** the utf-16 and utf-32 external formats are supported.
2185 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
2186 in the environment. setenv() and unsetenv() are also provided. (reported by
2187 Fare Rideau; launchpad bug lp#460455)
2188 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
2189 loading. This ensures sensible errors for .FASL files from other
2190 implementations on case-insensitive filesystems. (reported by Willem
2191 Broekema; launchpad bug lp#489417)
2192 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
2193 Willem Broekema; launchpad bug lp#489698).
2194 * bug fix: some minor code rearrangements to reenable warning-free building
2195 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
2196 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
2198 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
2201 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
2202 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
2203 * improvement: support O_LARGEFILE access to files larger than 2GB on
2204 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
2205 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
2206 definitions for methods specializing on the passed class itself.
2207 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
2208 definitions for methods specializing on the passed class itself, or on
2210 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
2211 about itself during the build (e.g. for M-? in Slime), if this flag is
2212 enabled in customize-target-features.lisp. This will increase the core
2213 size by about 5-6mb, though, so it's mostly interesting to SBCL
2215 * new feature: various GENCGC tuning parameters have been experimentally
2216 documented and exported from SB-EXT. See documentation for details.
2217 * fixes and improvements related to Unicode and external formats:
2218 ** the Unicode character database has been upgraded to the
2219 Unicode 5.2 standard, giving names and properties to a number of new
2220 characters, and providing a few extra characters with case
2222 ** improvement: restarts for providing replacement input/output on coding
2223 errors for fd-stream external formats.
2224 ** improvement: where :<encoding> is a keyword corresponding to an
2225 external format the system supports, it is now possible to specify
2226 (:<encoding> :replacement <character>) as an external format which will
2227 automatically substitute <character> on encoding or decoding errors for
2228 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
2230 ** improvement: the file streams underlying the standard streams (such as
2231 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
2232 which uses the replacement mechanism to handle encoding errors,
2233 preventing various infinite error chains and unrecoverable I/O
2235 ** minor incompatible change: the utf-8 external format now correctly
2236 refuses to encode Lisp characters in the surrogate range (char-codes
2237 between #xd800 and #xdfff).
2238 ** fix a typo preventing conversion of strings into octet vectors
2239 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
2241 ** fix a bug in the octet multibyte handling of decoding errors and the
2242 USE-VALUE restart. (launchpad bug lp#314939)
2243 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
2244 restart on fd-stream decoding errors.
2245 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
2246 error is near the end of file.
2247 ** fix a double-error case in unibyte octet conversions, when the first
2248 use of USE-VALUE is ignored.
2249 ** fix bugs in handling of undefined code points in unibyte encodings.
2250 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
2251 streams after an UNREAD-CHAR.
2252 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
2253 object is allocated in a boxed region of dynamic space.
2254 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
2255 fork with multiple Lisp threads running is made, instead of going
2256 ahead with unpredictable consequences. (reported by Leslie Polzer)
2257 * bug fix: uses of slot accessors on specialized method parameters within
2258 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
2259 error while finalizing the class. This fix may cause classes with slot
2260 accessors to be finalized later than previously. (reported by Lars Rune
2261 Nøstdal; launchpad bug lp#473699)
2262 * bug fix: restore buildability on the MIPS platform. (regression from
2263 1.0.30.38, reported by Samium Gromoff)
2264 * bug fix: inspecting closures is less likely to fail with a type error.
2265 * bug fix: no timer starvation when setting the system clock back.
2266 (launchpad bug lp#460283)
2267 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
2268 standard pprint dispatch table as specified by CLHS.
2269 * bug fix: give CLISP a hint about a type declaration to enable it to build
2270 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
2272 * bug fix: correctly dump literal objects in defaulting forms of arglists.
2273 (reported by Attila Lendvai; launchpad bug lp#310132)
2274 * bug fix: distinguish in type specifiers between arrays that might be
2275 complex and arrays that are definitely complex. (launchpad bug lp#309129)
2276 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
2277 type. (reported by Levente Mészáros; launchpad bug lp#485972)
2278 * bug fix: setting the value of a symbol-macro within a method in the
2279 presence of type declarations works properly again. (reported by Iban
2280 Hatchondo; launchpad bug lp#485019)
2282 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
2283 * optimization: faster FIND and POSITION on strings of unknown element type
2284 in high SPEED policies. (thanks to Karol Swietlicki)
2285 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
2287 * improvement: better error signalling for bogus parameter specializer names
2288 in DEFMETHOD forms (reported by Pluijzer)
2289 * bug fix: DELETE-FILE once again works on logical pathnames (regression
2291 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
2293 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
2294 removes previous default initargs (reported by Lars Rune Nøstdal and
2296 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
2297 lambda-lists. (reported by Peter Seibel)
2298 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
2299 correctly when starting from an executable core without saved runtime
2300 options (reported by Faré Rideau, thanks to Zach Beane)
2301 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
2302 an optimization note instead. (reported by Martin Cracauer)
2303 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
2304 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
2305 new process group if it doesn't need to share stdin with the sbcl
2306 process. (thanks to Leslie Polzer)
2307 * bug fix: SATISFIES could be misoptimized to refer to a local function.
2308 (reported by Stanislaw Halik)
2310 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
2311 * improvement: stack allocation is should now be possible in all nested
2312 inlining cases: failure to stack allocate when equivalent code is manually
2313 open coded is now considered a bug.
2314 * improvements related to Unicode:
2315 ** the Unicode character database has been upgraded to the
2316 Unicode 5.1 standard, giving names and properties to a number of new
2317 characters, and providing a few extra characters with case
2319 ** the system now recognizes and produces names for Unicode Hangul
2320 syllable characters.
2321 ** the EBCDIC-US external-format is now supported for octet operations
2322 (as well as for stream operations).
2323 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
2324 be used to output toplevel compile-time effects into a separate .CFASL
2326 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
2327 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
2329 * optimization: TRUNCATE on known single- and double-floats is upto 25%
2331 * optimization: division of floating point numbers by constants uses
2332 multiplication by reciprocal when an exact reciprocal exists.
2333 * optimization: multiplication of single- and double-floats floats by
2334 constant two has been optimized.
2335 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
2336 sufficient type information is available. (thanks to Leslie Polzer)
2337 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
2338 known structure objects are as efficient as defstruct generated accessors.
2339 * optimization: unused vector creation can now be optimized away.
2340 * improvement: ASDF systems can now depends on SB-INTROSPECT.
2341 * improvement: a STYLE-WARNING is signalled when a generic function
2342 clobbers an earlier FTYPE proclamation.
2343 * improvement: the compiler is able to track the effective type of
2344 generic function across method addition and removal even in the
2345 absence of an explicit DEFGENERIC.
2346 * improvement: DESCRIBE now reports on symbols naming undefined
2347 but assumed or declared function as well.
2348 * improvement: recompilation of systems using SB-GROVEL now works
2349 (thanks to Leslie Polzer)
2350 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
2351 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
2353 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
2354 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
2355 well as user defined declaration names.
2356 ** VARIABLE-INFORMATION is now aware of alien variables.
2357 * improvement: improved address space layout on OpenBSD (thanks to Josh
2359 * improvement: pretty-printing of various Lisp forms has been improved
2360 (thanks to Tobias Rittweiler)
2361 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
2362 unused were deleted in safe code. (reported by John Fremlin)
2363 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
2365 * bug fix: some out-of-line array predicates were missing (reported by
2367 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
2369 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
2370 (thanks to Larry D'Anna)
2371 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
2372 as well. (reported by Josh Elsasser)
2373 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
2374 leading to possible attempts to delete the same file twice. See docstring
2375 on DELETE-FILE for details. (reported by John Fremlin)
2376 * bug fix: DELETE-FILE once again deletes the file named by the pathname
2377 designator argument, rather than its truename. (reported by Luis
2379 * bug fix: the low-level debugger had 32-bit assumptions and was missing
2380 information about some array types. (thanks to Luis Oliveira)
2381 * bug fix: moderately complex combinations of inline expansions could
2382 be miscompiled if the result was declared to be dynamic extent.
2383 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
2384 form (+ <variable> <integer>) were miscompiled under certain
2386 * bug fix: in some cases no compiler note about failure to stack allocate
2387 was emitted, even if the objects were in fact heap allocated.
2388 * bug fix: minor violation of "otherwise inaccessible" rule for stack
2389 allocation could cause objects users might reasonably expect to
2390 be heap allocated to be stack allocated.
2391 * bug fix: DESCRIBE signalled an error for generic functions under
2392 certain circumstances. (thanks to Leslie Polzer)
2393 * bug fix: Fixed spelling of an error message.
2395 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
2396 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
2397 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
2398 of SB-THREAD:THREAD-ERROR-THREAD.
2399 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
2400 * new feature: docstrings for local and anonymous functions are no longer
2401 discarded. (thanks to Leslie Polzer)
2402 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
2403 values in other threads.
2404 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
2405 about object allocation.
2406 * optimization: division of a real float by a complex float is implemented
2407 with a specialised code sequence.
2408 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
2409 keywords is an order of magnitude faster.
2410 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
2411 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
2412 methods, and similarly for non-standard metaclass classes as long as there
2413 are no methods additional on MAKE-INSTANCE.
2414 * optimization: more efficient type-checks for FIXNUMs when the value
2415 is known to be a signed word on x86 and x86-64.
2416 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
2417 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
2419 * optimization: compiler is smarter about delegating argument type checks to
2421 * optimization: several character functions are now compiled somewhat more
2422 efficiently. (reported by Lynn Quam)
2423 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
2424 * improvement: less unsafe constant folding in floating point arithmetic,
2425 especially for mixed complex/real -float operations.
2426 * optimization: constant double and single floats are stored in native
2427 unboxed format on x86[-64].
2428 * optimization: smarter code for arithmetic operations with constant floats,
2429 complex floats, or integers on x86[-64].
2430 * optimization: smarter code for conjugate/multiplication of float complexes
2431 and abs/negate of floats on x86-64.
2432 * optimization: more efficient complex float and real float operations on
2434 * improvement: complex float division is slightly more stable.
2435 * improvement: DESCRIBE output has been reworked to be easier to read and
2436 contains more pertinent information.
2437 * improvement: failure to provide requested stack allocation compiler notes
2438 provided in all cases (requested stack allocation not happening without a
2439 note being issued is now considered a bug.)
2440 * bug fix: SB-POSIX exports the documented types and functions
2441 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
2442 types. (reported by "abhi")
2443 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
2444 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
2445 (thanks to Paul Khuong)
2446 * bug fix: looping around HANDLER-CASE could silently consume stack space
2447 on each iteration. (reported by "foobar")
2448 * bug fix: better error signalling when calls to functions seeking elements
2449 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
2450 (reported by Tobias Rittweiler)
2451 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
2452 directory components now works as it used to. (various prolems reported by
2453 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
2454 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
2455 (reported by Elliot Slaughter, thanks to Stas Boukarev)
2456 * bug fix: bogus undefined variable warnings from fopcompiled references to
2457 global variables. (thanks to Lars Rune Nøstdal)
2458 * bug fix: foreign function names should now appear in backtraces on
2459 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
2460 * bug fix: SETF compiler macro documentation strings are not discarded
2462 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
2463 (thanks to Alex Plotnick)
2464 * bug fix: SLEEP accepts large integer arguments, truncating them to
2465 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
2466 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
2467 * bug fix: compiler notes for expensive slot type checks could be emitted
2468 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
2470 changes in sbcl-1.0.29 relative to 1.0.28:
2471 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
2472 https://bugs.launchpad.net/sbcl
2473 Bugs can be reported directly there, or by sending email to
2474 sbcl-bugs@lists.sourceforge.net
2475 (no subscription required.)
2476 * minor incompatible change: under weak type checking policy integer
2477 types are weakened less aggressively.
2478 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
2479 allowed to return, which causes SBCL to quit with exit status 0. Previously
2480 if the function returned with a small integer return value, that value
2481 was accidentally reused as the exit status.
2482 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
2483 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
2484 :HASH-FUNCTION argument. Refer to user manual for details.
2485 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
2487 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
2488 microseconds since the Unix epoch on all platforms.
2489 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
2490 allows the compiler to safely elide boundedness checks for special
2492 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
2493 the symbol, prohibits both lexical and dynamic binding. This is mainly an
2494 efficiency measure for threaded platforms, but also valueable in
2496 * new feature: UNC pathnames are now understood by the system on Windows.
2497 * optimization: the compiler uses a specialized version of FILL when the
2498 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
2500 * optimization: accesses to potentially non-simple arrays where element type
2501 is known are 50% faster.
2502 * optimization: compiler now generates faster array typechecking code.
2503 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
2505 * optimization: multidimensional array accesses in the absence of type
2506 information regarding array rank are approximately 10% faster due to
2507 open coding of ARRAY-RANK.
2508 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
2509 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
2511 * optimization: result of call to VECTOR can now be stack allocated.
2512 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
2513 as long as the resulting array is one-dimensional and has a known
2514 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
2515 length of the list matches the known length of the vector does not
2516 allocate the list as an intermediate step. Ditto for VECTOR and simple
2518 * optimization: MAKE-ARRAY can now stack allocate in the presence of
2519 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
2520 known element type, and is known to be simple and one dimensional.
2521 * improvement: SBCL now emits a compiler note where stack allocation was
2522 requested but could not be provided (not in all cases, unfortunately)
2523 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
2524 * improvement: pretty-printing loop has been implemented properly. (thanks
2525 to Tobias Rittweiler)
2526 * documentation: CLOS slot typechecing policy has been documented.
2527 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
2528 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
2529 pointer, leading to memory faults. (thanks to Bart Botta)
2530 * bug fix: better floating point exception handling on x86/OpenBSD.
2531 (thanks to Josh Elsasser)
2532 * bug fix: exit status from QUIT when called under --script was lost
2533 (reported by Hubert Kauker)
2534 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
2535 same implementation of FILL to initialize the array, even if a more
2536 efficient one was available (reported by Stas Boukarev, thanks to
2538 * bug fix: potential miscompilation of array stack allocation on x86 and
2539 x86-64. (reported by Time Tossavainen)
2540 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
2541 result in their subforms being treated as top level forms. (reported by
2543 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
2544 than a machine register could leave garbage in the high bits of the
2545 result register (bug 316325).
2546 * bug fix: disable address space randomization Linux/x86-64 as well,
2547 not just x86-64. (reported by Ken Olum)
2548 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
2549 generate incorrect code.
2550 * bug fix: #201; type inference for CONS and ARRAY types could derive
2551 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
2552 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
2553 could not be assigned to or bound with PROGV. (reported by Lorenz
2555 * bug fix: the value of CL:- in the inspector was the previous expression
2556 evaluated rather than the expression being evaluated.
2557 * bug fix: constants can no longer be locally declared special.
2558 * bug fix: signals delivered to threads started from foreign land (read:
2559 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
2560 thread by blocking all signals and resignalling.
2561 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
2562 from :INITFORM, if any.
2564 changes in sbcl-1.0.28 relative to 1.0.27:
2565 * a number of bugs in cross-compilation have been fixed, with the ultimate
2566 result that building under (at least) clisp should be much more reliable.
2567 * minor incompatible changes: echo-streams now propagate unread-char to the
2568 underlying input stream, and no longer permit unreading more than one
2570 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
2571 frames, allowing for instance more reliable backtraces.
2572 * improvement: the debugger REPL can now reference lexical variables
2573 by name directly for code compiled with (DEBUG 3).
2574 * improvement: errors from malformed declarations now have better source
2575 paths associated with them. (thanks to Tobias Rittweiler)
2576 * optimization: faster local calls on x86/x86-64
2577 * bug fix: some error messages for out-of-bound array indexes confused the
2578 index and the bound. (thanks to Stas Boukarev)
2579 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
2581 * bug fix: running regressions tests in shells without OSTYPE set now works.
2582 (reported by Harald Hanche-Olsen)
2583 * bug fix: more robust static space exhaustion signalling from
2584 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
2585 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
2586 docstring away instead of storing it under names such as (LAMBDA (X)).
2587 (reported by Leslie Polzer)
2588 * bug fix: timers could go off in the wrong order, be delayed indefinitely
2589 (thanks to Ole Arndt for the patch)
2590 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
2591 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
2592 potentially-invalid effective methods in its cache.
2593 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
2594 instances as well (thanks to Paul Khuong)
2595 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
2596 SB-POSIX:WAITPID and their C equivalents.
2597 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
2599 changes in sbcl-1.0.27 relative to 1.0.26:
2600 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
2601 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
2602 * improvement: the system either recovers from stack exhaustion or dies
2603 properly as opposed to leaving the user uncertain of whether the handler
2604 trampled on some random memory next to the stack or having to rely on
2605 --lose-on-corruption (which is still a good idea to use in production
2606 because stack exhaustion can happen in signal handlers which will likely
2608 * bug fix: fix gc related interrupt handling bug on ppc (regression from
2609 1.0.25.37, reported by Harald Hanche-Olsen)
2610 * bug fix: work around signal delivery bug in darwin (regression from
2611 1.0.25.44, reported by Sidney Markowitz)
2612 * bug fix: fix ERROR leaking memory (reported by David Thompson)
2614 changes in sbcl-1.0.26 relative to 1.0.25:
2615 * incompatible change: an interruption (be it a function passed to
2616 INTERRUPT-THREAD or a timer function) runs in an environment where
2617 interrupts can be enabled. The interruption can use
2618 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
2619 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
2620 potentially running out of stack. Keep in mind that in the absence
2621 of WITHOUT-INTERRUPTS some potentially blocking operation such as
2622 acquiring a lock can enable interrupts.
2623 * incompatible change: GC-OFF and GC-ON are removed, as they were
2624 always unsafe. Use WITHOUT-GCING instead.
2625 * new feature: runtime option --disable-ldb
2626 * new feature: runtime option --lose-on-corruption to die at the
2627 slightest hint of possibly non-recoverable errors: running out of
2628 memory, stack, alien stack, binding stack, encountering a memory
2629 fault, etc. In the absence of --lose-on-corruption a warning is
2631 * enhancement: detect binding stack exhaustion
2632 * enhancement: detect alien stack exhaustion on x86/x86-64
2633 * improvement: generally more stable and reliable interrupt handling
2634 * improvement: there is a per thread interruption queue,
2635 interruptions are executed in order of arrival
2636 * improvement: a repeating timer reschedules itself when the it has
2637 finished, but expiration times are spaced equally. If an
2638 expiration time is in the past it will trigger after a short grace
2639 period that may give a chance to other things to run.
2640 * optimization: slightly faster gc on multithreaded builds
2641 * optimization: faster WITHOUT-GCING
2642 * bug fix: when JOIN-THREAD signals an error, do it when not holding
2643 important locks so that the debugger/handler doesn't produce
2644 recursive errors or deadlock.
2645 * bug fix: real-time signals are not used anymore, so no more
2646 hanging when the system wide real-time signal queue gets full.
2647 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
2649 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
2650 * bug fix: fix random memory faults related to interrupts on alpha
2651 * bug fix: fix random memory faults related to interrupts on sparc
2652 * bug fix: fix deadlocks related to starting threads
2653 * bug fix: fix deadlines on locks on futex platforms
2654 * bug fix: restore errno in signal handlers
2655 * bug fix: fix deadlocks related to hash tables
2656 * bug fix: fix deadlocks in pcl
2658 changes in sbcl-1.0.25 relative to 1.0.24:
2659 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
2660 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
2661 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
2662 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
2663 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
2664 better name and does not return values so stale on multiprocessor systems.
2665 Also, HOLDING-MUTEX-P was added for about the only sane usage of
2667 * improvement: unithread builds keep track of MUTEX-VALUE.
2668 * improvement: reading from a TWO-WAY-STREAM does not touch the output
2669 stream anymore making it thread safe to have a concurrent reader and
2670 a writer, for instance, in a pipe.
2671 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
2672 arguments, making compiler-macros for SETF-functions able to inspect
2673 their constant arguments.
2674 * improvement: COMPILE-FILE reports times with millisecond accuracy
2675 (thanks to Luis Oliveira)
2676 * optimization: CHAR-CODE type derivation has been improved, making
2677 TYPEP elimination on subtypes of CHARACTER work better. (reported
2678 by Tobias Rittweiler, patch by Paul Khuong)
2679 * bug fix: setting alien structure fields of type struct by value now
2680 computes the right offset for the memory copy.
2681 * bug fix: compilation problem involving inlined calls to aliens with
2682 result type VOID. (reported by Ken Olum)
2683 * bug fix: #235a; sequential inline expasion in different policies no
2684 longer reuses the functional from the previous expansion site.
2685 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
2686 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
2687 * bug fix: named ENUMs in multiply-referenced alien record types no longer
2688 cause an implied type redefinition. Regression from 1.0.21.29.
2689 * bug fix: sign-extension of small signed return values now works with C
2690 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
2691 * improvements to the Windows port:
2692 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
2693 Westfold, thanks to Rudi Schlatte)
2695 changes in sbcl-1.0.24 relative to 1.0.23:
2696 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
2697 vector of a multidimensional SIMPLE-ARRAY.
2698 * new feature: the system now signals a continuable error if standard
2699 readtable modification is attempted. (thanks to Tobias Rittweiler)
2700 * new feature: DIRECTORY has been extended with a non-standard keyword
2701 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
2702 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
2703 has been robustified and documented better. (thanks to Robert Goldman)
2704 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
2705 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
2706 * tradeoff: constant FORMAT control strings are now compiled unless
2707 SPACE > SPEED (previously only when SPEED > SPACE.)
2708 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
2710 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
2712 * bug fix: lexical type declarations are now correctly reported by
2713 SB-CLTL2. (reported by Larry D'Anna)
2714 * bug fix: STRING-TO-OCTETS did not handle :START properly when
2715 using UTF-8 as external format. (thanks to Luis Oliveira)
2716 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
2717 are signalled correctly. (thanks to Stas Boukarev)
2718 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
2719 designator. (thanks to Tobias Rittweiler)
2720 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
2721 designator, and returns T instead of the function. (thanks to
2723 * bug fix: direct superclasses of STANDARD-CLASS and
2724 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
2725 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
2726 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
2727 when no class with the named slot yet exists no longer causes a
2728 compile-time style-warning.
2729 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
2730 in safe code. (reported by Didier Verna)
2731 * bug fix: #430; nested structure constructors can stack allocate.
2732 * bug fix: on some 64-bit platforms dynamic space size was truncated
2733 to #xffff0000 bytes. (reported by Benjamin Lambert)
2734 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
2735 REPL unusable. (reported by Daniel Herring)
2736 * bug fix: return values of READ-SEQUENCE did not take :START into
2737 account on file streams, regressions since 1.0.12.22. (reported by
2738 Thomas Russ, patch by Paul Khuong)
2739 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
2740 method specializer used to confuse permuation vector optimization.
2741 * bug fix: system inserted bogus implicit type declarations for local
2742 special variables in DEFMETHOD bodies.
2743 * bug fix: #354; duplicated frames in backtraces due to
2744 non-tail-call-optimized XEPs to functions with return type NIL
2746 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
2747 initializes structure object slots according to DEFSTRUCT initforms,
2748 and DEFSTRUCT forms :INCLUDEind structure classes defined using
2749 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
2750 (reported by Bruno Haible and Stephen Wilson)
2751 * bug fix: #395; fill-pointer output streams used now support
2752 element-type BASE-CHAR as well.
2753 * bug fix: compiler error when attempting to derive return value of
2754 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
2756 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
2758 * bug fix: Mac OS X binaries should now be portable between Leopard
2761 changes in sbcl-1.0.23 relative to 1.0.22:
2762 * enhancement: when disassembling method functions, disassembly
2763 for the associated fast function is also produced.
2764 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
2766 * optimization: printing with *PRINT-PRETTY* true is now more
2767 efficient as long as the object being printed doesn't require
2768 special handling by the pretty printer.
2769 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
2770 now interact correctly with type declarations.
2771 * partial bug fix: PCL detects infinite recursion during wrapper
2772 validation. (thanks to Attila Lendvai)
2773 * bug fix: #426; nested function calls are inlined properly.
2774 Previously if FOO was an inline function, in calls of the form
2775 (FOO (FOO ...)) the outer call was not inlined.
2776 * bug fix: long long arguments passed in registers to alien
2777 functions on PowerPC Linux and NetBSD are now handled correctly
2778 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
2780 changes in sbcl-1.0.22 relative to 1.0.21:
2781 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
2782 for the shared object in the current directory, but passes the native
2783 namestring of the designated pathname to the operation system's shared
2784 object loading function as-it.
2785 * minor incompatible change: --disable-debugger toplevel option now takes
2786 effect before processing of initialization files and --eval or --load
2788 * new feature: new commandline argument: --script, which supports
2789 shebang lines. See documentation for details. (based on work by
2791 * new feature: SAVE-LISP-AND-DIE can save current values of
2792 --dynamic-space-size and --control-stack-size in the executable core,
2793 causing it to skip normal runtime option processing. See documentation
2794 for details. (thanks to Zach Beane)
2795 * enhancement: inoccous calls to EVAL or generic functions dispatching
2796 on subclasses of eg. STREAM no longer cause compiler notes to appear.
2797 * enhancement: the system no longer resignals errors from --load and
2798 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
2799 associated with the original error to be lost. (thanks to Ariel
2801 * enhancement: :DONT-SAVE keyword argument has been added to
2802 LOAD-SHARED-OBJECT for controlling interaction with
2803 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
2804 the effects of an earlier LOAD-SHARED-OBJECT call.
2805 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
2806 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
2807 provided. (reported by Cedric St-Jean)
2808 * bug fix: circularity handling in the reader did not treat raw
2809 structure slots correctly. (reported by Cedric St-Jean)
2810 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
2811 file descriptors when there were none.
2812 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
2813 was broken. (reporteed by Willem Broekema)
2814 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
2815 pathnames without a directory.
2816 * bug fix: COMPILE-FILE did not warn about undefined variable
2817 references at toplevel, and LOAD of the resulting fasl did
2818 not signal an error.
2819 * bug fix: functions with non-required arguments used to end up with
2820 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
2821 * bug fix: redefining a function with non-required arguments didn't
2822 update the system's knowledge about its call signature properly.
2823 * bug fix: fixed #431; incompatible alien record type redefinitions
2824 are detected and handled. (reported by Neil Haven)
2825 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
2826 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
2828 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2829 after alien stack frames.
2830 * bug fix: strings passed to mk{s,d}temp lacked null termination
2832 changes in sbcl-1.0.21 relative to 1.0.20:
2833 * new feature: the compiler is able to track the effective type of a
2834 generic function across method addition and removal.
2835 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2836 appropriately typed structure slots without locking.
2837 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2838 information like those gathered by TIME using a programming-friendly
2840 * new feature: TIME reports time taken even if the form performs a
2841 non-local transfer of control.
2842 * enhancement: reduced conservativism on GENCGC platforms: on
2843 average 45% less pages pinned (measured from SBCL self build).
2844 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2845 mutate constant symbols or violate declaimed type of the symbol.
2846 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2847 sleeping on the semaphore in heavily contested semaphores.
2848 * bug fix: semaphores and condition variables were not interrupt
2850 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2851 owned by other threads anymore.
2852 * bug fix: FIND on lists called KEY outside the specified
2853 subsequence. (reported by budden)
2854 * bug fix: LOG doesn't use single-float intermediate results when
2855 given mixed integer and double-float arguments, leading to better
2856 precision. (reported by Bob Felts)
2857 * bug fix: LOG with base zero returned values of inconsistent type.
2859 changes in sbcl-1.0.20 relative to 1.0.19:
2860 * minor incompatible change: OPTIMIZE qualities
2861 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2862 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2863 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2864 * documentation: some slot access efficiency guidelines have been
2865 added to the user manual.
2866 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2867 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2868 as ASSOC and MEMEBER.
2869 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2870 to more efficient EQ-comparison versions more often.
2871 * optimization: enhanced derivation of DOLIST iteration variable type
2873 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2875 * optimization: runtime lookup of function definitions can be
2876 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2877 * optimization: compiler is able to derive the return type of
2878 (AREF (THE STRING X) Y) as being CHARACTER.
2879 * optimization: CLRHASH on empty hash-tables no longer does pointless
2880 work. (thanks to Alec Berryman)
2881 * optimization: REPLACE deftransforms don't punt when :START1 or
2883 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2884 no longer emits a code deletion note. (reported by Andrew
2886 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2887 functions with an odd number of &OPTIONAL arguments, a &REST
2888 argument, and one or more &KEY arguments at the call site.
2889 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2890 arguments appeared at call sites as well.
2891 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2892 READ-LINE &co can no longer read from them afterwards. (reported
2894 * bug fix: fixed #427: unused local aliens no longer cause compiler
2895 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2897 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2898 alien-stack leakage. (reported by Andy Hefner)
2899 * bug fix: PROGV signals an error when an attempt to violate declared
2900 type of a variable or bind a constant is made.
2901 * bug fix: SET signals an error when an attempt to violate declared
2902 type of a variable is made.
2903 * bug fix: restart computation during the execution of a restart
2904 test function no longer causes infinite recursion. (reported by
2906 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2907 signals an error. (thanks to Pierre Mai)
2908 * bug fix: EXPORT left symbol unexported in conflict situations.
2909 (thanks to Michael Weber)
2910 * bug fix: correctly handle name conflicts involving CL:NIL.
2911 (thanks to Michael Weber)
2912 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2913 conflicts arising from USEing package with conflicting symbols
2914 correctly. (thanks to Michael Weber)
2916 changes in sbcl-1.0.19 relative to 1.0.18:
2917 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2918 warnings that go otherwise unhandled will be muffled if they are
2919 of the type that's the value of this variable.
2920 * optimization: stack allocation is slightly more efficient on x86
2922 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2923 where a raw slot always is initialized using the initform whose
2924 type is not know sufficiently well a compile-time are now compiled
2925 correctly. (reported by John Morrison)
2926 * bug fix: compiler no longer makes erronous assumptions in the
2927 presence of non-foldable SATISFIES types.
2928 * bug fix: stack analysis missed cleanups of dynamic-extent
2929 arguments in non-let-converted calls to local functions.
2930 * improvements to the Windows port:
2931 ** adjusted address spaces for building on both Win32 and
2932 Win64. (thanks for John Connors)
2933 * fixed some bugs revealed by Paul Dietz' test suite:
2934 ** interval arithmetic during type derivation used inexact integer
2935 to single-float coercions.
2936 ** arithmetic operations involving large integers and single
2937 floats give the same results in compiled and interpreted code.
2938 ** deriving the result type of COERCE no longer signals an error
2939 if the derived type of the second argument is a MEMBER type
2940 containing invalid type specifiers.
2941 ** ADJOIN with constant NIL as second argument works correctly.
2942 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2944 changes in sbcl-1.0.18 relative to 1.0.17:
2945 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2946 profiles only the current thread.
2947 * minor incompatible change: changes to SYMBOL-VALUE of constants
2948 defined with DEFCONSTANT now signal an error.
2949 * enhancement: SB-SPROF now has support for wallclock profiling,
2950 and is also able to profile specific threads. REPORT output
2951 has also additional sorting options.
2952 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2954 * optimization: structure allocation has been improved
2955 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2956 ** out of line constructors are ~10% faster.
2957 ** inline constructors are ~15% faster.
2958 ** inline constructors are capable of dynamic extent allocation
2959 (generally on x86 and x86-64, in some cases on other platforms
2961 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2963 * optimization: file compiler is now able to coalesce non-circular
2964 lists, non-base strings, and bit-vectors. Additionally, constants
2965 are never referenced through SYMBOL-VALUE at runtime.
2966 * optimization: code defining methods on PRINT-OBJECT (and other
2967 generic functions in the COMMON-LISP package) now loads faster.
2968 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2970 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2971 fasl is now deleted. (reported by Attila Lendvai)
2972 * bug fix: READ-LINE always returned NIL for the last line in files.
2973 (reported by Yoshinori Tahara)
2974 * bug fix: more accurate disassembly annotations of foreign function
2975 calls. (thanks to Andy Hefner)
2976 * bug fix: trimming non-simple strings and non-string string
2977 designators when the there is nothing to trim works properly.
2978 (thanks to James Knight)
2979 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2980 (thanks to Travis Cross)
2981 * fixed some bugs revealed by Paul Dietz' test suite:
2982 ** NIL is a valid function name (regression at 1.0.13.38)
2983 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2984 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2985 fill pointers properly (regression at 1.0.12.23)
2986 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2987 displacement indices properly (regression at 1.0.12.23)
2989 changes in sbcl-1.0.17 relative to 1.0.16:
2990 * temporary regression: user code can no longer allocate closure
2991 variable storage on stack, due to bug 419 without explicitly
2992 requesting it. Please consult sbcl-devel for advice if you need to
2993 use this feature in the meanwhile.
2994 * new feature: runtime argument --control-stack-size can be used to
2995 adjust thread default control stack size.
2996 * enhancement: improved TIME output
2997 ** all times are reported using the measured accuracy (milliseconds
2998 for real and GC times, microseconds for everything else.)
2999 ** processor cycle counts on x86 and x86-64.
3000 ** interpreted forms are counted for both evaluator modes.
3001 ** number of lambdas converted by the compiler is reported.
3002 ** CPU percentage report (computed from real and total run time.)
3003 ** more comprehensive run time reporting, using a condenced format
3004 ** interperted form, lambda, and page fault counts are omitted
3006 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
3008 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
3009 * optimization: two argument forms of LAST are upto ~10% faster
3010 in normal SPEED policies.
3011 * optimization: NCONC no longer needs to heap cons its &REST list
3012 in normal SPEED policies.
3013 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
3014 to Sidney Markowitz)
3015 * bug fix: UNION and NUNION work with :TEST-NOT once more,
3016 regression since 1.0.9.1. (thanks to Eric Marsden)
3017 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
3018 since 1.0.15.36. (thanks to Paul Khuong)
3019 * bug fix: LAST when always returned the whole list when given a bignum
3020 as the second argument.
3021 * bug fix: dynamic extent allocation of nested lists and vectors
3022 could leak to otherwise accessible parts.
3023 * bug fix: invalid optimization of heap-allocated alien variable
3025 * bug fix: fasl header checking is less vulnerable to different
3026 platform word lengths.
3027 * bug fix: more correct assembler syntax for GNU binutils
3028 2.18.50.0.4 support. (thanks to Marijn Schouten)
3029 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
3031 * bug fix: the fopcompiler can handle LOCALLY forms (with no
3032 declarations) successfully. (reported by Attila Lendvai)
3034 changes in sbcl-1.0.16 relative to 1.0.15:
3035 * minor incompatible change: revert the changes to sb-posix's error
3036 signaling added in 1.0.14.
3037 * minor incompatible change: change PROBE-FILE back to returning
3038 NIL whenever we can't get a truename, as was the case before 1.0.14.
3039 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
3040 inherits from ERROR instead of just CONDITION.
3041 * new feature: SB-INTROSPECT can provide source locations for instances
3042 as well. (thanks to Tobias Rittweiler)
3043 * optimization: binding special variables now generates smaller code
3044 on threaded platforms.
3045 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
3046 and cases where no :TEST is given but the compiler can infer that
3047 the element to search is of type (OR FIXNUM (NOT NUMBER)).
3048 * optimization: better LOGNOT on fixnums.
3049 * optimization: modular arithmetic for a particular requested width
3050 is implemented using a tagged representation unless a better
3051 representation is available.
3052 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
3053 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
3054 for wellformedness and returns a specialized vector. (reported by
3055 Francois-Rene Rideau)
3056 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
3057 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
3058 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
3059 unscheduling timer at the same time as another timer fires.
3060 * bug fix: don't reschedule timers for dead threads.
3061 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
3062 * bug fix: copying output from RUN-PROGRAM to a stream signalled
3063 bogus errors if select() was interrupted.
3064 * enhancement: add support for fcntl's struct flock to SB-POSIX.
3066 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
3067 * enhancement: cleaner backtraces for interactive interrupts, as
3068 well as other cases where the interesting frames used to be
3069 obscured by interrupt handling frames.
3070 * enhancement: untracing a whole package using (UNTRACE "FOO") is
3071 now supported, and tracing a whole package using (TRACE "FOO") now
3072 traces SETF-functions as well.
3073 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
3074 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
3075 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
3076 * unreadably printed representation of hash-tables now includes
3078 * bug fix: partially fixed #188: type propagation from assignments
3079 is now more efficient.
3080 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
3081 'DOUBLE-FLOAT) are not flushable.
3082 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
3083 full address of the object, and none of the tag bits.
3084 * bug fix: readably printing hash-tables now respects other printer
3085 control variables. (reported by Cedric St-Jean)
3086 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
3087 keyword with MAKE-HASH-TABLE.
3088 * bug fix: export SB-POSIX:MKSTEMP.
3089 * bug fix: SORT was not interrupt safe.
3090 * bug fix: XREF accounts for the last node of each basic-block as
3092 * bug fix: MAKE-INSTANCE optimizations interacted badly with
3093 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
3094 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
3095 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
3096 create obsolete instances in the case of redefinition or
3097 obsoletion of a superclass. (thanks to Andy Hefner)
3098 * bug fix: Support for the Alpha architecture has been revived; it had
3099 suffered somewhat from lack of maintenance since sbcl-1.0.
3100 * improvements to the Windows port:
3101 ** The system detects the codepage to use at startup, instead of
3102 using the value from the saved core. (thanks to Kei Suzuki)
3104 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
3105 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
3106 (see documentation for details.)
3107 * revived support for OpenBSD (contributed by Josh Elsasser)
3108 * partially fixed bug #108: ROOM no longer suffers from occasional
3109 (AVER (SAP= CURRENT END)) failures.
3110 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
3111 bodies no longer cause a WARNING to be signalled. (reported by
3113 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
3114 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
3115 the bug in TRUNCATE.) (reported by Michael Weber)
3116 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
3117 no samples. (reported by Andy Hefner)
3118 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
3119 no longer appear as (NIL ...) frames in backtraces.
3120 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
3121 is now actually exported from SB-EXT as documented. (reported by
3123 * bug fix: sb-aclrepl now correctly understands how to inspect
3124 single-floats on 64-bit platforms where single-floats are not boxed.
3125 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
3126 yet been finalized. (reported by Levente Meszaros)
3127 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
3128 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
3129 SBCL-specific optimize qualities.
3131 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
3132 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
3133 an executable in the search path, and does so in the child
3134 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
3135 been removed; it can be found in the CVS history, for somebody who
3136 needs that search behavior (see the manual).
3137 * minor incompatible change: compiler policy re. weakening type
3138 checks has changed: now type checks are weakened only if SAFETY < 2
3140 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
3141 unparsing of directory pathnames as files. Analogously,
3142 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
3143 filename to parse into a directory pathname.
3144 * enhancement: implicit generic function creation now signals a
3145 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
3146 users can bind handlers for and muffle around calls to LOAD.
3147 * enhancement: RUN-PROGRAM allows unicode arguments and environments
3148 to be used (using the default stream external format), and allows
3149 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
3150 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
3151 strings and vectors whose element-type or simplicity is not fully
3152 known at compile-time.
3153 * optimization: STRING-TRIM and related functions no longer allocate
3154 a new string when no trimming needs to be performed. These functions
3155 are also faster than before when the input string has been declared
3157 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
3158 * optimization: READ-LINE is significantly faster for files containing
3160 * optimization: non-open coded uses of character comparison operators
3161 (e.g. char=) no longer cons when called with more than one parameter
3162 on platforms supporting dynamic-extent allocation.
3163 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
3164 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
3165 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
3167 * bug fix: some sequence functions elided bounds checking when
3169 * bug fix: too liberal weakening of union-type checks when SPEED >
3171 * bug fix: more bogus fixnum declarations in ROOM implementation
3174 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
3175 * new feature: MAKE-HASH-TABLE now experimentally accepts a
3176 :SYNCHRONIZED argument, which makes the hash-table safe for
3177 concurrent accesses (but not iteration.) See also:
3178 SB-EXT:WITH-LOCKED-HASH-TABLE, and
3179 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
3180 * optimization: CONCATENATE on strings is an order of magnitude faster
3181 in code compiled with (> SPEED SPACE).
3182 * optimization: SUBSEQ is ~50% faster on lists.
3183 * bug fix: bug 417 fixed -- source location reporting is now more robust.
3184 * bug fix: SUBSEQ on a list will now correctly signal an error if if
3185 END is smaller then START.
3186 * bug fix: SB-PROFILE will no longer report extra consing for nested
3187 calls to profiled functions.
3188 * bug fix: ROOM implementation had bogus fixnum declarations which
3189 could cause type-errors when calling ROOM on large images.
3190 * bug fix: if file compilation is aborted, the partial fasl is now
3191 deleted, and COMPILE-FILE returns NIL as the primary value.
3192 * bug fix: number of thread safety issues relating to SBCL's internal
3193 hash-table usage have been fixed.
3194 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
3195 be returned from its body when the values were being returned
3196 using unknown-values return convection and the W-P-O was wrapped
3197 inside an UNWIND-PROTECT.
3198 * bug fix: sb-posix should now compile again under Windows, enabling
3199 slime to work again.
3201 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
3202 * incompatible change: hash-table accessor functions are no longer
3203 automatically protected by locks. Concurrent accesses on the same hash-table
3204 from multiple threads can give inconsistent results or even corrupt the
3205 hash-table completely. Multi-threaded applications should do their own
3206 locking at the correct granularity. In the current implementation it is
3207 still safe to have multiple readers access the same table, but it's not
3208 guaranteed that this property will be maintained in future releases.
3209 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
3210 and will signal an error at runtime.
3211 * enhancement: SB-THREAD package now exports a semaphore interface.
3212 * enhancement: CONS can now stack-allocate on x86 and
3213 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
3215 * enhancement: nested lists can now be stack allocated on
3216 platforms providing stack allocation support.
3217 * enhancement: dynamic-extent support has been extended to support
3218 cases where there are multiple possible sources for the stack
3220 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
3221 if the mutex is uncontested on Linux.
3222 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
3223 as specified by the CLHS. (thanks to Tobias Rittweiler)
3224 * bug fix: NaN comparison now works on x86-64.
3225 * bug fix: CLOSE :ABORT T on a stream with pending output now
3227 * bug fix: instances of non-standard metaclasses using standard
3228 instance structure protocol sometimes missed the slot type checks
3230 * bug fix: known functions can be inlined in high-debug code.
3232 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
3233 * minor incompatible change: the MSI installer on Windows no longer
3234 associates .lisp and .fasl files with the installed SBCL.
3235 * minor incompatible change: :UNIX is no longer present in *FEATURES*
3236 on Windows. (thanks to Luis Oliviera)
3237 * new feature: SB-CLTL2 contrib module now implements
3238 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
3239 * optimization: scavenging weak pointers is now more efficient,
3240 requiring O(1) instead of O(N) per weak pointer to identify
3241 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
3242 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
3243 method bodies using constant slot-names when the first argument is
3244 a specializer parameter for the method.
3245 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
3246 names, when the class of the instance is a direct instance
3247 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
3248 as slow as the constant slot-name case.)
3249 * optimization: member type construction is now O(N) instead
3251 * optimization: UNION and NUNION are now O(N+M) for large
3252 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
3254 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
3255 now more readable in environments like Slime which display it.
3256 (thanks to Tobias C. Rittweiler)
3257 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
3258 was able to infer the correct argument type for the object on which
3259 the CAS operation was being performed.
3260 * bug fix: copy propagation interfered with parallel assignment
3261 semantics in local calls. (reported by Paul Khuong)
3262 * bug fix: the signed modular fixnum shift compiled to wrong code on
3263 x86 and x86-64. (spotted by a slight modification to some of
3266 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
3267 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
3268 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
3269 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
3271 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
3272 and generic function now print the object identity for anonymous
3273 instances. (thanks to Attila Lendvai)
3274 * enhancement: as an extension to MOP, SBCL now supports SETF of
3275 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
3276 (thanks to Attila Lendvai)
3277 * enhancement: sb-cover has an alternate annotation mode which puts
3278 the form annotations at the car of the form, instead of annotating
3279 it completely. The benefit of this mode is that it shows better
3280 which forms were instrumented by the compiler.
3281 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
3282 by printer control variables. (reported by Dan Corkill)
3283 * bug fix: system leaked memory when delayed output was performed by
3284 the OS in smaller chunks then expected. (thanks to David Smith)
3285 * bug fix: system leaked memory when file streams were not closed
3287 * bug fix: large objects written to slow streams that were modified
3288 after the write could end up with the modified state written to
3289 the underlying file descriptor.
3290 * bug fix: multiple threads operating in parallel on the same stream
3291 could cause buffer-overflows.
3292 * bug fix: source location information is stored correctly
3293 (broken since 1.0.6). This bug would generally show up as the
3294 Slime debugger highlighting the wrong form when the sldb-show-source
3296 * bug fix: Branch forms are again annotated as branches in the sb-cover
3298 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
3299 on x86-64. (reported by Gregory Vanuxem)
3300 * bug fix: EQUALP could return wrong results for structures with raw
3301 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
3302 word). (reported by Vjacheslav Fyodorov)
3303 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
3306 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
3307 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
3308 atomic compare-and-swap operations on threaded platforms.
3309 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
3310 allows assigning a global minimum value to optimization qualities
3311 (overriding proclamations and declarations).
3312 * enhancement: closed over variables can be stack-allocated on x86
3314 * performance bug fix: GETHASH and (SETF GETHASH) are once again
3316 * optimization: slot definition lookup is now O(1). This speeds up
3317 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
3318 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
3319 * optimization: ASSOC and MEMBER can now be open-coded for all
3320 combinations of keyword arguments when second argument is constant
3321 and SPEED >= SPACE. In other cases a specialized version is
3323 * bug fix: using obsoleted structure instances with TYPEP and
3324 generic functions now signals a sensible error.
3325 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
3326 (reported by Kristoffer Kvello)
3327 * bug fix: backtrace construction is now more careful when making
3328 lisp-objects from pointers on the stack, to avoid creating bogus
3329 objects that can be seen by the GC.
3330 * bug fix: defaulting of values in contexts expecting more than 7
3331 variables now works on x86-64. (reported by Christopher Laux)
3332 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
3334 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
3335 as the property-list of a symbol.
3336 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
3337 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
3338 situations requested, are once again file-compileable. (reported
3341 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
3342 * MOP improvement: support for user-defined subclasses of
3343 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
3344 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
3345 the expansion of DEFMETHOD, is responsible for generating a form
3346 which creates a list of specializers when evaluated. Additional
3347 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
3348 debugging and introspective support.
3349 * minor incompatible change: the (unsupported) spinlock interface
3350 has changed: free spinlock now has the value NIL, and a held spinlock
3351 has the owning thread as its value.
3352 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
3353 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
3355 * enhancement: name of a socket-stream is now "a socket" instead of
3356 "a constant string".
3357 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
3358 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
3359 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
3360 for generic functions. (Thanks to Tobias C. Rittweiler)
3361 * optimization: bignum printing speed has been improved by 20-40%
3362 (depending on the bignum size.)
3363 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
3365 * bug fix: the cache used by the CLOS to store precomputed effective
3366 methods, slot offsets, and constant return values is now thread and
3368 * bug fix: generic function dispatch function updating is now thread
3369 and interrupt safe (in the sense that the known issues have been
3371 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
3372 * bug fix: interning EQL-specializers is now thread and interrupt safe.
3373 * bug fix: asdf systems with dependencies to the SB-POSIX or
3374 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
3375 * bug fix: interrupt safety of applicable method computation has been
3378 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
3379 * new contrib: sb-cover, an experimental code coverage tool, is included
3380 as a contrib module.
3381 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
3382 significantly faster.
3383 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3384 produce more efficient code on x86-64 if the compiler can determine
3385 that (+ INDEX <constant>) does not require a bounds check and FOO
3386 has an element type at least 8 bits wide.
3387 * enhancement: a new, experimental synchronous timeout facility is
3388 provided. Refer to SB-SYS:WITH-DEADLINE for details.
3389 * enhancement: when a symbol name conflict error arises, the
3390 conflicting symbols are always printed with a package prefix.
3391 (thanks to Kevin Reid)
3392 * enhancement: stepping is now once again supported on the SPARC and
3393 MIPS platforms. (It is also now more likely to work on CheneyGC
3395 * enhancement: sb-sprof can now also track and report accurate call
3397 * bug fixes: the treatment of non-standard subclasses of
3398 SB-MOP:SPECIALIZER is more correct.
3399 * incompatible change: PURIFY no longer copies the data from the
3400 dynamic space into the static and read-only spaces on platforms
3401 that use the generational garbage collector
3402 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
3404 * bug fix: GC race condition occasionally resulting in crashes with
3405 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
3407 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
3409 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
3410 a STYLE-WARNING to be signalled (regression from 1.0.4.)
3411 * bug fix: an asynchronous interrupt could previously leave the
3412 system running with GC inhibited.
3413 * bug fix: a DECLARE form evaluated at top-level now causes an error
3414 rather than silently (or verbosely) returning NIL.
3415 * bug fix: trying to dissassemble functions compiled at high DEBUG could
3416 result in a error being signalled due to source form lookup errors.
3417 (reported by Peter Graves)
3419 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
3420 * incompatible change: removed writer methods for host-ent-name,
3421 host-ent-addresses -- changing the values did not update the DNS
3423 * minor incompatible change: changed experimental JOIN-THREAD interface
3424 * documentation: the manual now lists reader and writer methods
3425 in class slot documentation sections. (thanks to Richard M Kreuter)
3426 * documentation: unwinding from asyncronous events has been
3427 documented as unsafe.
3428 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
3429 in multithreaded application code.
3430 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
3431 platforms. (thanks to James Anderson for the optimization hint)
3432 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
3434 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
3435 variants no longer cons.
3436 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
3437 their NOT- variants no longer cons.
3438 * optimization: EQUAL hash tables no longer use SXHASH for objects
3439 of all data types, but instead use an EQL hash for types for which
3440 EQUAL is the same as EQL.
3441 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
3442 are significantly faster.
3443 * optimization: new STRING-OUTPUT-STREAM implementation is much
3444 faster for large outputs and conses 30% less on average.
3445 * enhancement: XREF information is now collected for references made
3446 to global variables using SYMBOL-VALUE and a constant argument.
3447 * enhancement: SIGINT now causes a specific condition
3448 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
3449 * bug fix: FILE-POSITION used to signal an error in some cases where
3450 ANSI requires it to return NIL.
3451 * bug fix: ADJUST-ARRAY is now interrupt-safe.
3452 * bug fix: adding and removing fd-handlers is now interrupt-safe.
3453 * bug fix: inlined calls to C now ensure 16byte stack alignment on
3455 * bug fix: bad type declaration in the CLOS implementation has
3456 been fixed. (reported by James Anderson)
3457 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
3458 (thanks to Lutz Euler)
3459 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
3460 required by the CLHS. (reported by Samium Gromoff)
3461 * bug fix: dead unbound variable references now signal an error.
3462 (reported by Marco Monteiro)
3463 * bug fix: / with an unused value was being deleted in safe code.
3464 (thanks to Marco Monteiro and Kevin Reid)
3465 * bug fix: number of characters that can be written onto a single
3466 line in a file is unlimited.
3467 * bug fix: some GC deadlocks caused by asynchronous interrupts have
3468 been fixed by inhibiting interrupts for when GC is disabled.
3469 * bug fix: some interrupt safety issues with GETHASH, (SETF
3470 GETHASH), CLRHASH and REMHASH have been fixed.
3471 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
3472 specifier no longer causes infinite recursion.
3473 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
3474 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
3475 * bug fix: an &environment argument with the correct variable information
3476 is passed to macros that are expanded during byte compilation.
3477 (reported by Samium Gromoff)
3478 * bug fix: a logic error was causing the hash function for bignums to
3479 have excessive amounts of collisions. (reported by Faré Rideau)
3480 * bug fix: modifying the contents of an array could change the return
3481 value of SXHASH on that array, which is only allowed for strings
3482 and bit vectors. (bug introduced in 0.9.16)
3483 * improvement: the x86-64/darwin port now passes all tests (except
3484 for the debugger tests) but should still be considered
3485 experimental until this is fixed.
3486 * improvement: a style-warning is signaled for CASE (etc) clauses with
3487 duplicate keys. (thanks to Kevin Reid)
3488 * improvement: macos/x86 and macos/x86-64 now use mach exception
3489 handlers for dealing with illegal instructions (for trapping and
3490 error handling) and memory protection violations (for GC).
3492 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
3493 * new platform: experimental support for x86-64/darwin (MacOS).
3494 * incompatible change: the thread-safe (on most platforms) getaddrinfo
3495 and getnameinfo sockets functions are used instead of gethostbyaddr
3496 and gethostbyname, on platforms where the newer functions are available.
3497 As a result, the ALIASES field of HOST-ENT will always be NIL on these
3499 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
3500 don't print the startup banner, but behave as if --noinform was passed
3501 as a command line argument. (thanks to Kevin Reid)
3502 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
3503 * optimization: code using alien values with undeclared types is much faster.
3504 * optimization: the compiler is now able to open code SEARCH in more cases.
3505 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
3506 * bug fix: using standardized COMMON-LISP special variables as loop
3507 variables no longer signals bogus package lock violations. (reported
3509 * bug fix: declaring local loop variables to be of a range-limited type
3510 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
3511 (reported by Andras Simon)
3512 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
3513 bugs remain on x86-64.)
3514 * bug fix: the #= and ## reader macros now interact reasonably with
3515 funcallable instances.
3516 * bug fix: type-checks for function arguments were compiled using the
3517 compiler policy settings of the wrong lexical environment (in 1.0.2
3519 * bug fix: SHADOW accepts characters as string designators, as required
3520 by the spec (thanks to Eric Marsden)
3521 * bug fix: fixed GC safety issues when foreign functions are called with
3522 non-base strings as arguments
3523 * bug fix: more consistent error output for fatal-compiler-warnings, like
3525 * bug fix: functions with proper names were showing up as NIL in
3526 backtraces (reported by Edi Weitz, regression in 1.0.2)
3528 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
3529 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
3530 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3531 produce more efficient code on the x86 if the compiler can determine
3532 that (+ INDEX <constant>) does not require a bounds check and FOO
3533 has an element type at least 8 bits wide.
3534 * bug fix: references to undefined variables are handled the same way
3535 in toplevel forms as in the normal compiler
3536 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
3538 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
3539 (thanks to Jon Buller)
3540 * improvement: faster compilation times for complex functions
3541 * improvement: added readlink support to SB-POSIX (thanks to Richard
3544 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
3545 * improvement: experimental support for mach exception handling on
3546 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
3548 * improvement: support for GBK external format.
3549 (thanks to Chun Tian (binghe))
3550 * improvement: the debugger now displays variables that have been closed
3551 over, in code compiled with (DEBUG 2) or higher
3552 * improvement: support for executable cores on NetBSD (thanks to
3554 * new feature: added a RESTART-FRAME debugger command
3555 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
3556 be used to provide an implementation for FILE-POSITION on Gray streams
3557 (thanks to Eric Marsden)
3558 * new feature: add syslog, openlog and closelog support to SB-POSIX
3559 (thanks to Richard Kreuter)
3560 * optimization: the function call overhead in code compiled with
3561 a high DEBUG optimization setting is significantly
3562 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
3563 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
3564 (thanks to Tony Martinez)
3565 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
3566 evaluated once (reported by Kevin Reid)
3567 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
3568 works again (thanks to Kilian Sprotte)
3569 * bug fix: an error is signaled for tagbodies with duplicate tags
3570 (thanks to Stephen Wilson)
3571 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
3572 * bug fix: Win32 port can now handle foreign code unwinding Lisp
3573 stack frames from alien callbacks.
3574 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
3575 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
3576 65k pages (thanks to David Woodhouse)
3577 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
3579 changes in sbcl-1.0.1 relative to sbcl-1.0:
3580 * new platform: FreeBSD/x86-64, including support for threading.
3581 * new feature: the compiler stores cross-referencing information
3582 about function calls (who-calls), macroexpansion (who-macroexpands)
3583 and special variables (who-binds, who-sets, who-references) for code
3584 compiled with (< SPACE 3). This information is available through the
3585 sb-introspect contrib.
3586 * new feature: users may subclass SEQUENCE, and have instances of
3587 these classes interoperate with standard Common Lisp functions if
3588 a number of methods are defined. (This feature is experimental
3589 and the interface subject to change based on feedback from SBCL
3590 users and the general community)
3591 * improvement: sb-sprof traces call stacks to an arbitrary depth on
3592 x86/x86-64, rather than the previous fixed depth of 8
3593 * improvement: another pthread back-end of mutex "pthread-futex".
3594 * bug fix: non-ascii command-line arguments are processed correctly
3595 (thanks to Yaroslav Kavenchuk)
3596 * bug fix: non-required arguments were not passed correctly when a method
3597 defined using DEFMETHOD was called from a mop-generated method using
3598 CALL-NEXT-METHOD (reported by Pascal Costanza)
3599 * bug fix: recursion is now permitted in accessors through
3600 SLOT-UNBOUND. (reported by Pascal Costanza)
3601 * bug fix: an error was signaled at startup if the HOME environment
3602 variable was defined, but had an empty value (reported by Peter Van Eynde)
3603 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
3604 signal a PROGRAM-ERROR, not a BUG.
3605 * bug fix: SB-POSIX:READDIR works when built with large file support.
3606 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
3608 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
3609 for better automatic indentation support. (thanks to Matt Pillsbury)
3610 * optimization: loading generic functions no longer takes O(n^2) time,
3611 proportional to the amount of methods in the generic function
3612 (reported by Todd Sabin and Jeremy Brown)
3613 * optimization: the FIND and POSITION family of sequence functions
3614 are significantly faster on arrays whose element types have been
3616 * improvements to the Windows port:
3617 ** Intermittent heap corruption problems have been fixed. (thanks
3618 to Alastair Bridgewater)
3619 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
3621 ** Lisp is able to unwind foreign exception frames from alien
3622 callbacks. (thanks to Alastair Bridgewater)
3624 changes in sbcl-1.0 relative to sbcl-0.9.18:
3625 * improvement: experimental support for threading on FreeBSD/x86.
3626 (thanks to NIIMI Satoshi)
3627 * improvement: runtime option --dynamic-space-size can be used
3628 to set the size of the dynamic space reserved on startup.
3629 * improvement: floating point modes in effect are now saved in
3630 core, and restored on startup.
3631 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
3632 startup, not time since first call to GET-INTERNAL-REAL-TIME.
3633 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
3634 threads are not running after *SAVE-HOOKS* have run.
3635 * improvement: writes to CLOS instance slots are type-checked in code
3636 compiled with (SAFETY 3)
3637 * improvement: floating-point exception handling on FreeBSD (thanks to
3639 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
3640 (thanks to Zach Beane)
3641 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
3643 * improvement: added support for the Shift-JIS external format.
3644 (contributed by NIIMI Satoshi)
3645 * improvement: callbacks are supported on Linux/PPC. (thanks to
3647 * bug fix: compiler bug triggered by a (non-standard) VALUES
3648 declaration in a LET* was fixed. (reported by Kaersten Poeck)
3649 * bug fix: file compiler no longer confuses validated and already
3650 dumped structurres. (reported by Kaersten Poeck)
3651 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
3652 fill-pointer signals a type-error as required. (thanks to
3654 * bug fix: disassemly of funcallable instances works.
3655 * bug fix: single stepping on PPC.
3656 * bug fix: fix thread-safety problems in the type system (generally
3657 manifesting as nonsensical errors like "STRING is a bad type specifier
3658 for sequences" or "The value 1 is not of type FIXNUM")
3659 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
3660 (reported by Josip Gracin)
3661 * bug fix: an error is signaled for attempts to displace arrays with
3662 incompatible element types (thanks to Mario Mommer)
3663 * bug fix: more correct handling of wide characters in debug info
3664 (bug reported by Attila Lendvai and fixed by Juho Snellman)
3665 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
3666 and don't cause extra consing
3667 * optimization: MAP and MAP-INTO are significantly faster on vectors
3668 whose elements types have been declared.
3669 * Improvements to SB-SPROF:
3670 ** Support for allocation profiling
3671 ** Reduced profiling overhead, especially for long profiling runs
3672 * Improvements to the Windows port:
3673 ** floating point exceptions are now reported correctly.
3674 ** stack exhaustion detection works partially.
3675 ** more accurate GET-INTERNAL-REAL-TIME.
3676 ** better RUN-PROGRAM behaviour in case of errors in the child
3678 ** PROBE-FILE now simplifies pathnames correctly.
3679 ** DIRECTORY now works correctly with :WILD-INFERIORS.
3680 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
3681 1st 1970 (although time timezone data will be unreliable).
3682 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
3684 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
3685 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
3686 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
3688 * bug fix: two potential GC deadlocks affecting threaded builds.
3689 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
3690 returns T (reported by Anton Kazennikov)
3691 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
3692 with non-variable places
3693 * bug fix: remove a race condition in the setting of
3694 funcallable-instance functions, this should make threaded CLOS
3695 code more stable against memory faults.
3696 * bug fix: corruption of specials when unbinding is interrupted by an
3697 asynchronous unwind (reported by Hannu Koivisto)
3698 * improvement: the debugger will now also display local variables that
3699 are only used once, for code compiled with a DEBUG optimization quality
3702 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
3703 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
3704 * incompatible change: External-format support for FFI calls. The
3705 SB-ALIEN:C-STRING no longer implies an ASCII
3706 external-format. Instead the string is subject to external-format
3707 conversion. Additionally return values of type SB-ALIEN:C-STRING
3708 are by default of type (SIMPLE-ARRAY CHARACTER), not
3709 SIMPLE-BASE-STRING. For an alien type that behaves like the old
3710 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
3711 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
3712 * incompatible change: SB-EXT package no longer contains the
3713 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
3714 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
3716 * incompatible change: the single-stepper is no longer available
3717 on Alpha, Mips and Sparc platforms.
3718 * minor incompatible change: the direct superclasses of
3719 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
3720 not (STANDARD-OBJECT FUNCTION). This makes the
3721 class-precedence-lists of GENERIC-FUNCTION and
3722 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
3724 * minor incompatible change: the default stream external format on
3725 non-unicode SBCL is no longer detected from the locale, but is always
3727 * new feature: Add a version of evaluator that uses an interpreter instead
3728 of the compiler. EVAL still uses the compiler by default, to switch it
3729 to use the interpreter, set the value of the variable
3730 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
3731 * minor incompatible change: the single-stepper REPL has been merged
3732 with the normal debugger (see the "Stepping" heading of the debugger help
3733 for more details). The debugger command STEP will no longer switch
3734 to the single-stepper REPL.
3735 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
3736 for a type now works.
3737 * bug fix: loading of default sysinit file works. (thanks to Leonid
3739 * bug fix: better detection of circularities in the file-compiler.
3740 (reported by Marco Monteiro)
3741 * bug fix: the CL pathname functions now work with files that have
3742 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
3743 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
3744 systems with Unix98 pty semantics.
3745 * bug fix: ASDF-INSTALL will now work with bsd tar.
3746 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
3748 * bug fix: timers expiring in dead threads no longer cause a
3749 type-error (reported by Paul "Nonny Mouse").
3750 * bug fix: thanks to more lightweight single-stepper instrumentation,
3751 code compiled with (DEBUG 3) will compile and execute significantly faster,
3752 and will have more accurate type-inferencing than before
3753 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
3754 whose bindings are modified
3755 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
3756 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
3757 ** replace dummy implementations of CL:MACHINE-INSTANCE and
3758 CL:SOFTWARE-VERSION with proper version
3760 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
3761 * feature: implemented the READER-METHOD-CLASS and
3762 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
3763 as specified by AMOP.
3764 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
3766 * optimization: faster LOGCOUNT implementation on x86 and x86-64
3767 (thanks to Lutz Euler)
3768 * optimization: hashing of general arrays and vectors has been
3769 improved. (reported by Any Fingerhut)
3770 * enhancement: SB-INTROSPECT is now able to find definitions of
3771 profiled functions. (thanks to Troels Henriksen)
3772 * enhancement: compiler-macro expansion applies now to FUNCALL forms
3773 as well, allowing compiler-macros for SETF-functions to expand.
3774 * enhancement: step-instrumentation no longer wraps known
3775 single-value functions with multiple-value context, allowing
3776 better type inference.
3777 * fixed bug #337: use of MAKE-METHOD in method combination now works
3778 even in the presence of user-defined method classes. (reported by
3779 Bruno Haible and Pascal Costanza)
3780 * fixed bug #339(c): if there are applicable methods not part of any
3781 long-form method-combination group, call INVALID-METHOD-ERROR.
3782 (reported by Bruno Haible)
3783 * fixed bug #361: the :FUNCTION initarg in the protocol for
3784 initialization of methods can now be used to override
3785 internally-produced optimized functions. (reported by Bruno
3787 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
3788 system-provided lambda expression no longer cause warnings about
3789 unbound #:|pv-table| symbols.
3790 * bug fix: improved the handling of type declarations and the
3791 detection of violations for keyword arguments with non-constant
3793 * bug fix: potentially erronous calls to PATHNAME and
3794 MERGE-PATHNAMES were being flushed in some cases.
3795 (reported by Richard Kreuter)
3796 * bug fix: compiled calls to TYPEP were mishandling obsolete
3797 instances. (reported by James Bielman and Attila Lendvai)
3798 * bug fix: format strings with ~> without matching ~< no longer
3799 trigger an AVER, but signal an understandable error instead.
3800 (reported by Antonio Martinez)
3801 * bug fix: specifying an output-file without a pathname-type for
3802 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
3803 of input-file instead of "fasl". (reported by Robert Dodier)
3804 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
3805 (reported by James Y Knight).
3806 * bug fix: compiler-macros-function did not consider the environment
3807 argument for shadowing by local functions.
3808 * bug fix: compiler-macros expansion was inhibited by local INLINE
3810 * bug fix: inline expansions of known functions were subject to
3811 step-instrumentation in high debug policies, leading to problems
3812 with type-inference.
3813 * bug fix: compiler failed to differentiate between different CONS
3814 types in some cases.
3815 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
3816 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
3817 * bug fix: #368: incorrect use of expressed vs. upgraded array
3819 * bug fix: #306a: more precise unions of array types.
3820 * thread-safety improvements:
3821 ** CONDITION-WAIT could return early on Linux, if the thread was
3822 interrupted and subsequently continued with SIGCONT.
3823 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
3825 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
3826 * added support for the ucs-2 external format. (contributed by Ivan
3828 * minor incompatible change: pretty printing of objects of type
3829 (cons symbol) is, in the default pprint-dispatch-table, now
3830 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3832 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3833 called later in a class's lifetime, possibly as late as when the
3834 first instance of the class is created. Previously,
3835 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3836 class became finalizeable.
3837 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3838 for multibyte external-format streams. (thanks to "vbzoli")
3839 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3840 with :ALLOCATION :CLASS inherited from superclasses of the
3842 * fixed bug: anonymous classes can now be created using the :NAME
3843 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3844 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3845 * fixed bug: core-files saved with :EXECUTABLE T can again be
3846 executed when SBCL_HOME isn't set. (reported by James Knight)
3847 * fixed bug: toplevel LOCALLY forms with declarations could
3848 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3849 * fixed bug: printing from several different threads using different
3850 values of *print-case* could cause invalid output, due to
3851 some internal special variables of the printer not being bound
3852 thread-locally (reported by Max Mikhanosha)
3853 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3854 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3855 (reported by Pascal Costanza)
3856 * fixed bug: FINALIZE-INHERITANCE is called from
3857 REINITIALIZE-INSTANCE on classes when the class has previously
3858 been finalized, as required by AMOP.
3859 * minor code generation optimizations:
3860 ** better register allocation in CLOS dispatching functions
3861 ** overflow detection when coercing signed bytes to fixnums on x86-64
3862 ** is now implemented with one IMUL instruction instead of three shifts
3863 ** more efficient bit-vector access on x86 and x86-64
3864 ** more efficient access to raw structure slots on x86 and x86-64
3865 * fixed some bugs revealed by Paul Dietz' test suite:
3866 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3867 return its argument.
3869 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3870 * feature: thread support on Solaris/x86, and experimental thread support
3872 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3874 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3875 default method for SLOT-UNBOUND.
3876 * minor incompatible change: prevent the user from specializing the
3877 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3878 somewhat counter to the intent of the protocol, I (CSR) think, and
3879 additionally it just doesn't work in SBCL as currently
3880 implemented, thanks to optimizations (that are always valid for
3881 the other three SLOT-VALUEish functions, but not for the setter).
3882 * minor incompatible change: the :SB-LDB feature is now enabled by
3883 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3884 the low-level debugger.
3885 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3886 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3887 down to an SB-SYS:FD-STREAM, allowing direct communication in
3888 more cases. Temporary files and pipes are still used as a fallback
3890 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3891 on the non-reentrant C functions localtime(3) and gmtime(3).
3892 * bug fix: global optimization policy was not visible in LOCALLY and
3894 * bug fix: class objects can be used as specializers in methods.
3895 (reported by Pascal Costanza)
3896 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3897 with a type error. (reported by blitz_ on #lisp)
3898 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3899 failed with a type error. (reported by Pascal Bourguignon)
3900 * bug fix: merging pathnames against defaults with :DIRECTORY
3901 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3902 (reported by James Y Knight)
3903 * bug fix: saving large (>2GB) cores on x86-64 now works
3904 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3905 constant index and a (simple-array (signed-byte 32)) array
3906 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3907 error (patch by Robert J. Macomber)
3908 * feature: TIME now displays the amount of run-time spent in GC
3909 * bug fix: The debugger now does a better job of respecting
3910 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3911 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3912 workaround for bug 403.)
3913 * bug fix: floating point exception handling now works on FreeBSD
3914 (thanks to NIIMI Satoshi)
3915 * fixed some bugs revealed by Paul Dietz' test suite:
3916 ** MISC.641: LET-conversion were not supposed to work in late
3918 * improvements to the Win32/x86 port:
3919 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3920 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3922 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3923 * new feature: source path information is generated for macro-expansion
3924 errors for use in IDE's like Slime (thanks to Helmut Eller)
3925 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3926 * bug fix: compiler does not loop forever on an invalid type in
3928 * improvement: compilation of most CLOS applications is significantly
3930 * optimization: added a limited bytecode compiler for simple toplevel
3931 forms, speeding up compilation and FASL loading
3932 * bug fix: the statistical profiler now properly distinguishes anonymous
3935 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3936 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3937 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3938 into subclasses of the finalized class. Now user calls to
3939 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3940 system return before any subclasses are finalized.
3941 * minor incompatible change: The reader no longer ignores errors
3942 regarding non-existent packages in #+ and #- feature tests.
3943 * new feature: command line options --no-sysinit, --no-userinit to
3944 inhibit loading the corresponding init files
3945 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3946 for sending data through UDP sockets (thanks to François-René Rideau)
3947 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3948 error is signalled instead (thanks to François-René Rideau)
3949 * minor incompatible change: Error signalling behaviour of lexical
3950 operations violating package locks has changed slightly. Refer to
3951 documentation on package locks for details.
3952 * enhancement: EVAL can process IF-expressions without resorting to the
3954 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3955 constant-folded properly due to missing out-of-line functions.
3956 (reported by Mika Pihlajamäki)
3957 * bug fix: LISTEN sometimes returned T even in cases where no data was
3958 immediately available from the stream
3959 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3960 were reversed. (reported by Levente Mészáros)
3961 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3962 when given a vector displaced to an adjustable array. (reported
3964 * bug fix: derivation of float boundaries from numbers outside the
3965 appropriate float range (reported by John Wiseman)
3966 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3968 * bug fix: precomputing cache entries for generic functions with
3969 some subclasses of specializers as yet invalid does not attempt to
3970 fill a cache line with a negative offset. (reported by Levente
3972 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3973 allow condition class objects as arguments to DOCUMENTATION and
3974 (SETF DOCUMENTATION); only find and set documentation for
3975 structure names for the STRUCTURE doc-type. (suggested by Gary
3977 * improvements to the Win32/x86 port:
3978 ** (user-homedir-pathname) and default initialization file
3979 locations now know about the user's "Documents and Settings"
3980 directory (thanks to Yaroslav Kavenchuk)
3981 ** run-program is implemented (thanks to Mike Thomas)
3982 ** sockets support (thanks to Timothy Ritchey)
3983 ** better backtrace support (thanks to Alastair Bridgewater)
3984 ** sb-grovel supported
3985 ** asdf-install and sb-posix work somewhat
3986 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3987 * improvements to the Solaris/x86 port:
3988 ** works on Solaris 11/Solaris Express
3989 ** floating-point exception handling support
3990 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3991 * fixed some bugs revealed by Paul Dietz' test suite:
3992 ** REMOVE-METHOD returns its generic function argument even when
3993 the method is not one of the generic functions' methods.
3994 ** objects declared as MEMBER types can be admissible arguments to
3995 structure accessors.
3996 ** printing characters should simply be printed by the FORMAT ~:C
3998 ** compiler failure when compiling functions with hairy constant
3999 defaults for optional parameters.
4000 ** compiler produces wrong code when MAYBE-INLINE-expanding a
4001 function, which is already optimized.
4003 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
4004 * new platform: experimental support for SBCL x86/Darwin, including
4005 MacOS X 10.4.5 on Intel.
4006 * new feature: Unicode character names are now known to the system
4007 (through CHAR-NAME and NAME-CHAR).
4008 * new feature: the filesystem location of SBCL's core file is
4009 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
4010 * minor incompatible change: the contrib modules SB-POSIX and
4011 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
4012 this change is to make it easier to distribute
4013 location-independent binaries.
4014 * bug fix: as implied by AMOP, standardized classes no longer have
4015 slots named by external symbols of public packages. (reported by
4017 * optimization: calling functions via constant symbols -- as in
4018 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
4019 via the function object as in (FUNCALL #'FOO).
4020 * optimization: on x86 and x86-64, the calling convention for the
4021 case of dealing with an unknown number of values has been altered
4022 to be friendlier to the prediction heuristics implemented,
4023 particularly with reference to CALL and RET pairing. (thanks to
4024 Alastair Bridgewater)
4025 * optimization: on x86, the code for access to thread-local symbol
4026 values and binding/unbinding of thread-local symbols is smaller.
4027 (thanks to Alastair Bridgewater)
4028 * enhancement: CONSTANTP is now able to determine constantness of
4029 more complex forms, including calls to constant-foldable standardized
4030 functions and some special forms beyond QUOTE.
4031 * fixed bug: occasional GC crashes on Solaris/x86
4032 * optimization: x86-64 supports stack allocation of results of simple
4033 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
4034 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
4035 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
4036 (thanks to James Knight)
4037 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
4038 by the standard (thanks to Stephen Compall)
4040 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
4041 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
4042 be used for bundling the runtime and the core file into one
4043 executable binary. This feature is not currently supported on all SBCL
4044 platforms. (thanks to James Bielman and NIIMI Satoshi)
4045 * new feature: a generational or ephemeral garbage collector is now
4046 the default on the PowerPC platform (both Linux and Darwin). The
4047 old Cheney (stop and copy) collector is a build-time option.
4048 (thanks to Cyrus Harmon, after Raymond Toy)
4049 * minor incompatible change: the method by which SBCL finds its
4050 contributed modules has changed; it no longer relies on symbolic
4051 links from an $SBCL_HOME/systems directory, but searches directly
4052 in the subdirectories of $SBCL_HOME.
4053 * enhancement: the dynamic heap size on the Linux/PPC platform is
4054 markedly larger, even using the older Cheney garbage collector.
4055 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
4056 certain complicated string types. (reported by Gary King)
4057 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
4058 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
4059 * fixed bug: DOCUMENTATION on structures no longer signals an
4060 error if no structure type of the right name exists. (reported by
4062 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
4063 applicable non-standard primary or :AROUND method on
4064 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
4065 no longer cause unbound variable errors. (reported by Kevin Reid)
4066 * fixed bug: metacircle resolution in cases where methods have slots
4067 added before the slots from STANDARD-METHOD. (reported by Jean
4069 * fixed bug: the Power PC assembly code for calling into lisp
4070 sometimes computed its return address wrongly (depending on the
4071 15th bit of the address, fixed at link time). This used to
4072 manifest itself in a segmentation violation while building PCL.
4073 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
4074 many others over the years)
4075 * fixed bug: ROOM no longer reports silly numbers for stack usage if
4076 the stack pointer (treated as a signed integer) is negative.
4077 (thanks to Peter van Eynde)
4079 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
4080 * new platform: experimental support for the Windows operating
4081 system has been added. (thanks to Alastair Bridgewater)
4082 * fixed several bugs in and robustified the PPC FFI (including
4083 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
4084 * bug fix: allow non-simple string symbol names (reported by Paul
4086 * bug fix: interrupt handling on NetBSD (thanks to Richard M
4088 * bug fix: saving a core corrupted callbacks on x86/x86-64
4089 * bug fix: closed a loophole in metacircularity detection and
4090 grounding in the PCL implementation of CLOS.
4091 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
4092 (reported by tomppa on #lisp)
4093 * bug fix: clear the direction flag on Lisp -> C transitions, as
4094 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
4095 (reported by Andrej Grozin and Hendrik Maryns)
4096 * optimization: major improvements to GC efficiency on GENCGC platforms
4097 * optimization: faster implementation of EQUAL
4098 * optimization: emit more efficient opcodes for some common
4099 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
4100 * optimization: several other minor code-generation improvements on x86-64
4101 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
4103 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
4104 * minor incompatible change: (SETF CLASS-NAME) and (SETF
4105 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
4106 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
4107 by ANSI as a generic function, and for consistency (SETF
4108 GENERIC-FUNCTION-NAME) is treated likewise.
4109 * fixed bug #233.b: make constraint propagation notice when a variable
4110 value is changed after it is referenced but before it is used
4111 * fixed bug #296: no more arbitrary behaviour from filenames with
4112 odd characters as --load arguments. (reported by Adam Warner)
4113 * fixed bug #390: :CHARACTER-SET pathname components now work as
4114 expected. (reported by Tim Daly Jr)
4115 * fixed bug #391: complicated :TYPE intersections in slot
4116 definitions no longer cause an error in PCL internals.
4117 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
4118 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
4119 returning the number of octets which would be written to the
4120 file-stream. (thanks to Robert J. Macomber)
4121 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
4122 arguments to the internal stream functions. (thanks to David
4124 * bug fix: stack exhaustion is now handled on the x86/SunOS
4125 platform. (thanks to Daisuke Homma)
4126 * bug fix: more accurate ROOM results on GENCGC platforms
4127 * optimization: improved type inference for arithmetic-for
4128 index variables in LOOP
4129 * optimization: faster floating-point SQRT on x86-64
4130 * fixed some bugs revealed by Paul Dietz' test suite:
4131 ** DOCUMENTATION returns NIL instead of "" for method combinations
4132 that don't have a docstring
4134 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
4135 * minor incompatible change: (SETF CLASS-NAME) and (SETF
4136 GENERIC-FUNCTION-NAME) are no longer generic functions, and
4137 therefore are not customizeable by user code (as seems to be at
4138 least permitted and maybe required by AMOP). As a consolation,
4139 however, the SBCL implementation of these functions now calls
4140 REINITIALIZE-INSTANCE as specified by AMOP.
4141 * bug fix: slot-definition documentation is propagated as per ANSI
4142 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
4143 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
4144 argument, as do eslotd initialization methods. (from Pascal
4145 Costanza's "Closer" project)
4146 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
4147 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
4149 * bug fix: it is now possible to have more than one subclass of
4150 STANDARD-GENERIC-FUNCTION without causing stack overflow.
4151 (reported by Bruno Haible, Pascal Costanza and others)
4152 * bug fix: the dependent update protocol now works for generic
4153 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
4154 and Pascal Costanza)
4155 * bug fix: condition-class instances corresponding to
4156 DEFINE-CONDITION forms are now created eagerly. (reported by
4157 Kalle Olavi Niemitalo on comp.lang.lisp)
4158 * bug fix: floating point printing is more accurate in some
4159 circumstances. (thanks to Simon Alexander)
4160 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
4161 merged with *DEFAULT-PATHNAME-DEFAULTS*.
4162 * bug fix: callbacks on OS X now preserve stack-alignment.
4163 (thanks to Cyrus Harmon)
4164 * enhancement: the x86-64 disassembler is much better at
4165 disassembling SSE instructions. (thanks to Lutz Euler)
4166 * enhancement: CHECK-TYPE on a variable now allows type-inference
4167 (thanks to Vincent Arkesteijn)
4168 * optimization: improved performance of EUC-JP external format.
4169 (thanks to NIIMI Satoshi)
4170 * optimization: performance improvements to IO on file streams of
4171 :ELEMENT-TYPE CHARACTER
4172 * optimization: much faster memory allocation on x86-64
4173 * optimization: faster garbage collections (latency and throughput)
4175 * optimization: faster bignum subtraction and division on x86 and x86-64
4176 (thanks to Lutz Euler)
4177 * optimization: more accurate type-inference for loops that use a
4178 floating point index variable or a negative step.
4180 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
4181 * bug fix: add a workaround to SBCL looping infinitely at startup on
4182 Linux kernels with apparently buggy implementations of personality().
4183 (thanks to Svein Ove Aas)
4184 * bug fix: Unicode symbols are correctly printed in LDB backtraces
4185 (thanks to David Lichteblau)
4186 * bug fix: local bindings shadow global symbol macros for
4187 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
4188 * optimization: non-open coded uses of numeric comparison operators
4189 (e.g. >) no longer cons when called with more than one parameter
4190 on platforms supporting dynamic-extent allocation.
4191 * enhancement: saving cores with foreign code loaded is now supported
4192 on MIPS/Linux in addition to the previously supported platforms.
4193 * bug fix: FIND-RESTART now tests for activity, not applicability when given
4194 a restart object as identifier. (reported by Helmut Eller for CMUCL)
4195 * bug fix: division by zero in sb-sprof when no samples were collected
4196 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
4197 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
4198 (thanks to Alexander Kjeldaas)
4199 * new feature: ignoring the return values of destructive functions
4200 like NREVERSE signals a compile-time style-warning.
4201 (thanks to Kevin Reid)
4202 * new feature: the alignment of alien structure fields can be
4203 explicitly specified. (thanks to Cyrus Harmon)
4204 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
4205 and dump core on SIGQUIT
4207 ** incompatible change: threads do not inherit values of specials
4208 from their parents (see manual)
4209 ** bug fix: threads stacks belonging to dead threads are freed by the
4210 next exiting thread, no need to gc to collect thread stacks anymore
4211 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
4212 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
4213 ** bug fix: dynamic variable and thread start related gc lossage
4214 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
4216 * fixed some bugs revealed by Paul Dietz' test suite:
4217 ** SUBTYPEP is slightly more accurate on heinously complicated
4218 CONS types where some of the members have uncertain (in the
4219 NIL, NIL sense) type relationships to each other.
4221 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
4222 no longer purified unless :PURIFY T is explicitly specified.
4223 ** Non-purified cores are significantly smaller than before
4225 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
4226 * new feature: timers based on Zach Beane's excellent timer package
4227 * added support for the following external formats: koi8-u,
4228 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
4229 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
4230 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
4231 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
4232 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
4233 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
4234 * incompatible change: a threaded SBCL will no longer revert to
4235 non-threaded mode on non-NPTL systems, but refuse to start entirely.
4236 * bug fix: interrupts are disabled until startup is complete; no
4237 more sigsegvs when receiving a signal to soon
4238 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
4240 * bug fix: add a workaround for the memory randomization features in
4241 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
4242 workaround will only be in effect on systems with the proc filesystem
4244 * bug fix: printing objects of type HASH-TABLE signals a
4245 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
4247 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
4248 have been running for over 50 days. (reported by Gilbert Baumann)
4249 * bug fix: the logic for getting names of functions gets less
4250 confused when confronded with alternate-metaclass
4251 funcallable-instances. (reported by Cyrus Harmon)
4252 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
4253 consistent, even on internal alternate-metaclass objects.
4254 * bug fix: flush closure information collected by physical
4255 environment analysis prepass before the main pass. (bug reported
4257 * bug fix: compiler pack phase does not modify a hashtable, which is
4258 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
4259 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
4260 may be expanded. (reported by Alexander <malishev> on c.l.l)
4261 * bug fix: no more style-warnings when compiling code using LAST
4262 under high-SPEED low-SPACE settings. (reported by David Wallin
4264 * fixed some incompatibilities between SBCL's MOP and the MOP
4266 ** the METAOBJECT class is now implemented;
4267 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
4268 STANDARD-OBJECT, as required;
4269 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
4270 now compatible (as required by VALIDATE-SUPERCLASS); there
4271 remains a consistency requirement over the presence or absence
4272 of the FUNCTION class in the superclass list of finalized
4273 classes; see the manual for more details;
4274 ** the :AROUND method for COMPUTE-SLOTS on
4275 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
4276 requested slot ordering.
4278 ** bug fix: parent thread now can be gc'ed even with a live
4280 ** bug fix: binding a special with PROGV to no value is not
4281 the same as that symbol not having been bound (thanks to
4283 ** bug fix: binding specials is thread safe (thanks to
4285 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
4286 and SB-SPROF do not die with 'no handler for signal XX in
4287 interrupt_handle_now(..)' anymore
4288 ** bug fix: WITH-TIMEOUT works with multiple running threads
4289 * fixed some bugs revealed by Paul Dietz' test suite:
4290 ** ENSURE-GENERIC-FUNCTION should take a method class object for
4291 the :method-class keyword argument.
4293 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
4294 * new port: the Solaris operating system on x86 processors is now
4295 mostly supported, though some rough edges in the environment
4296 remain. (thanks to Daisuke Homma)
4297 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
4298 space for its heap. (thanks to Thiemo Seufer)
4299 * optimization: SBCL on MIPS platforms now supports dynamic-extent
4300 closures. (thanks to Thiemo Seufer)
4301 * minor incompatible change: eof selects abort in the debugger.
4302 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
4303 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
4305 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
4306 deprecated, and will go away in a future revision of SBCL.
4307 * minor incompatible change: GC-ON and GC-OFF are no longer
4308 implemented with a counter, it does not matter how many times gc
4309 is switched on or off
4310 * bug fix: discriminating functions for generic function classes
4311 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
4312 make invalid assumptions about method precedence order. (reported
4314 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
4315 platforms. (thanks to Thiemo Seufer)
4316 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
4317 * bug fix: correct pathname printing with printer escaping is on.
4318 (thanks to Kevin Reid)
4319 * bug fix: complex VOP definitions in "user-space" no longer trigger
4320 package locks. (reported by Zach Beane)
4321 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
4322 for funcallable-instance functions, and is no different from
4324 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
4325 characters in the current readtable. (reported by Nicholas Neuss)
4326 * bug fix: SUBTYPEP on various CONS types returns more a more
4327 accurate acknowledgment of its certainty.
4328 * optimizations: REMOVE-DUPLICATES now runs in linear time on
4329 lists in some cases. This partially fixes bug 384.
4330 * flush all standard streams before prompting in the REPL and the
4332 * bug fix: signal handling and triggering gc do not conflict
4333 directly anymore, in particular a high frequency sb-sprof does
4334 not prevent gc from running
4335 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
4336 approximation for timezone and DST information between the
4337 universal time epoch and the smallest negative 32-bit time_t.
4338 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
4339 year 1899 so long as the encoded time is non-negative.
4340 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
4341 the correct answer for non-constant rotate amounts when performing
4342 an inline 32-bit rotation.
4344 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
4345 there is only one thread in the session
4346 ** bug fix: memory leak for streams created in one thread and
4347 written to in another
4348 ** bug fix: lockup when compiled with gcc4
4349 ** bug fix: race that allows the gc to be triggered when gc is
4351 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
4352 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
4354 ** bug fix: finished threads are gc'ed properly
4355 * fixed some bugs revealed by Paul Dietz' test suite:
4356 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
4357 has arguments with a different set of applicable methods from
4358 the orignal arguments.
4359 ** The type error thrown by MAP now has a correct expected-type
4361 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
4362 name a compiled function.
4363 ** Three MISC tests where a large bignum was improperly coerced to
4364 a float that couldn't represent that bignum during type
4365 derivation were fixed.
4366 ** SUBTYPEP can now handle types involving the negation of a
4367 list-form FUNCTION type.
4368 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
4369 as (COMPLEX (AND RATIO (NOT FIXNUM))).
4370 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
4372 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
4373 * New feature: Experimental support for bivalent streams: streams
4374 opened with :element-type :default now allow character and binary
4375 (unsigned-byte 8) I/O
4376 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
4377 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
4379 * bug fix: no more highly sporadic "couldn't check whether ~S is
4380 readable" when reading a stream and an interrupt hits in the middle
4381 of a select system call
4382 * compiler better recognizes complex arrays (reported by Eduardo
4384 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
4385 for variables on SBCL built with linkage-tables. (reported by Luis
4387 * various error reporting improvements.
4388 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
4389 (Thanks to Thiemo Seufer)
4390 * bug fix: nested reader invokations work correctly
4391 * bug fix: it is possible to have simultaneous references to foreign
4392 code and foreign data with the same name.
4394 ** added x86-64 support
4395 ** incompatible change: the threading api now works with thread
4396 objects instead of thread ids
4397 ** bug fix: threads are protected from signals and interruption when
4398 starting up or going down
4399 ** bug fix: a race where an exiting thread could lose its stack to gc
4400 ** bug fix: don't halt on infinite error in threads if possible
4401 ** fixed numerous gc deadlocks introduced in the pthread merge
4402 ** bug fix: fixed thread safety issues in read and print
4403 ** bug fix: debugger doesn't hang on session lock if interrupted at
4404 an inappropriate moment
4405 ** bug fix: run-program is now thread safe(r)
4406 ** bug fix: inner with-recursive-lock no longer releases the mutex
4407 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
4408 * fixed some bugs revealed by Paul Dietz' test suite:
4409 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
4410 EXPECTED-TYPE slots filled.
4411 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
4413 ** MAKE-CONDITION accepts classes as type-designators.
4414 ** COMPILE may never return NIL.
4415 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
4416 range before calling Unix time functions
4418 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
4419 * numerous signal handling fixes to increase stability
4420 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
4421 * minor incompatible change: we now correctly canonize default
4422 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
4423 as per the MOP, rather than the historical (INITARG INITFUNCTION
4424 INITFORM). (reported by Bruno Haible)
4425 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
4426 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
4427 for more information.
4428 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
4429 pathname is a directory pathname.
4430 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
4431 * dynamic space size on PPC has been increased to 768Mb. (thanks to
4433 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
4434 :METACLASS argument in addition to a class name. (reported by
4435 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
4436 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
4437 (reported by Bruno Haible; patch from Gerd Moellmann)
4438 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
4440 * bug fix: more cleanups to the floating point exception handling on
4441 x86-64 (thanks to James Knight)
4442 * bug fix: the compiler does not try to constant fold calls of
4443 COERCE and BIT-* functions when they return freshly constructed
4444 objects. (reported by Nikodemus Siivola and Paul Dietz)
4445 * optimization: improved the MIPS versions of generic (in the
4446 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
4447 * optimization: direct conversion of (unsigned-byte 32) to floats on
4448 the PowerPC platform.
4449 * optimization: structure instances with raw slots now use less
4450 memory, and probably show better memory locality. (thanks to
4452 * optimization: DYNAMIC-EXTENT declarations for lists and closures
4453 are treated as requests for stack allocation on the x86-64,
4454 Alpha-32, PPC and SPARC platforms.
4455 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
4456 the wrong file descriptor; implementation of SOCKET-OPEN-P.
4457 (thanks to Tony Martinez)
4459 ** gcing a dead thread can no longer lead to lockups
4460 ** threads block signals until they are set up properly
4461 ** errno is no longer shared by threads
4462 ** interrupt-thread restores the eflags register on x86
4463 ** fixed some lockups due to gc/thread interaction
4464 * fixed some bugs revealed by Paul Dietz' test suite:
4465 ** invalid dotted lists no longer raise a read error when
4466 *READ-SUPPRESS* is T
4467 ** signal an error if a symbol that names a declaration is used
4468 as the name of a type, or vice versa
4469 ** allow using the (declare (typespec var*)) abbreviation for
4470 (declare (type typespec var*)) with all type specifiers
4471 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
4472 ** always return NIL from PPRINT-POP when OBJECT is NIL
4473 ** don't signal errors when pretty-printing malformed LABELS,
4474 FLET or MACROLET forms
4475 ** declarations in a DOLIST body are also in scope for the
4477 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
4479 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
4482 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
4483 * fixed cross-compiler leakages that prevented building a 32-bit
4484 target with a 64-bit host compiler.
4485 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
4486 opened with :IF-EXISTS :OVERWRITE.
4487 * fixed bug 281: error for an invalid qualifier in a short-form method
4488 combination method is not signalled until the faulty method is called.
4489 * bug fix: iteration variable type inferrer failed to deal with open
4490 intervals. (reported by Alan Shields)
4491 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
4492 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
4493 or more runtime options were provided to the sbcl binary.
4494 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
4495 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
4496 * optimization: there's now a fast-path for fixnum arguments in the
4497 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
4498 * optimization: the code generated on x86-64 is more compact thanks
4499 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
4500 * bug fix: floating-point exception handling now partly works on
4501 x86-64. (Thanks to James Knight)
4502 * improvement to the MIPS backend from Thiemo Seufer: C-style
4503 64-bit long long arguments and return values to alien functions
4505 * fixed some bugs revealed by Paul Dietz' test suite:
4506 ** the type-error signalled from WARN has a filled-in DATUM slot.
4507 ** the type-error required when a stream is not associated with
4508 a file has the stream as its datum.
4509 ** type-errors on single-floats on x86-64 no longer have
4510 :INVALID-OBJECT as the datum
4511 ** the type-errors signalled for invalid function names now have
4512 a correct expected type
4513 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
4514 for structures defined with a :TYPE. Documentation strings for
4515 typed structures are no longer immediately discarded
4516 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
4517 broadcast streams and synonym streams. FILE-LENGTH now also works
4518 on broadcast streams.
4520 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
4521 * incompatible change: the --noprogrammer option, deprecated since
4522 version 0.7.5, has been removed. Please use the equivalent
4523 --disable-debugger option instead.
4524 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
4526 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
4527 inoperational for a while now) has been completely removed.
4528 * null lexical environments are now printed as #<NULL-LEXENV>,
4529 significantly reducing the amount of clutter in typical backtraces.
4530 * documentation on weak pointers, finalization, and after GC hooks
4531 has been added to the manual.
4532 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
4533 as other specialized array types, is much faster. SUBSEQ and
4534 COPY-SEQ on such arrays have also been sped up.
4535 * optimization: EQL is now more efficient when at least other argument
4536 is known to be of type (OR FIXNUM (NOT NUMBER)).
4537 * fixed bug: the runtime is now less vulnerable to changes in the
4538 size of the SBCL object on OS X, and virtual memory is reserved for
4539 all spaces that need to be at a fixed address.
4540 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
4541 * fixed bug: finalizers and after GC hooks that cause consing are now
4543 * fixed bug: compiler error messages and summaries are now printed to
4544 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
4545 * fixed inference of the upper bound of an iteration variable.
4546 (reported by Rajat Datta).
4547 * fixed bug 211e: calling local functions with duplicated constant
4548 keyword argument no longer causes a bogus style warning about an
4550 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
4551 ftype declaration to be disregarded. (reported by Dave Roberts)
4552 * fixed bug 373: caused by erronous compilation of references to alien
4553 variables in the runtime on ppc/darwin.
4554 * fixed bug 376: CONJUGATE type deriver.
4555 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
4556 (reported by Baughn on #lisp)
4557 * a cross-compiler bug on non-x86 platforms has been identified and
4558 fixed. (thanks to Bruno Haible)
4559 * improvements to the MIPS runtime code for increased stability.
4560 (thanks to Thiemo Seufer)
4561 * increased the maximimum compact environment size to allow
4562 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
4563 * partial workaround for bug 135: don't name the function we're
4564 calling for hairy cases of EVAL, so as not to accumulate one environment
4565 entry per call to EVAL. (reported by Kevin Reid)
4566 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
4567 * optimization: type testing for non-vector arrays should be faster.
4568 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
4570 * bug fix: setting 31st element of a bit vector to zero did not work
4572 * bug fix: redefining a class definition which failed due to a
4573 previous accessor / function clash now works (but see BUGS entry
4574 #380 for more problems in this area). (thanks to Zach Beane)
4575 * the long form of DEFINE-METHOD-COMBINATION disables method group
4576 checking when given a single method group with pattern *. (thanks
4578 * on x86 compiler supports stack allocation of results of simple
4579 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
4580 * support for building and running on Mac OS X 10.4 "Tiger" has been added
4581 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
4582 * fixed some bugs related to Unicode integration:
4583 ** the restarts for recovering from input and output encoding
4584 errors only appear when there is in fact such an error to
4586 * fixed some bugs revealed by Paul Dietz' test suite:
4587 ** MISC.549 and similar: late transformation of unsafe type
4588 assertions into derived types caused unexpected code
4590 ** SCALE-FLOAT type deriver is less wrong.
4591 ** type derivers for EXP, LOG and similar functions compute result
4592 types for complex arguments better.
4593 ** (MISC.563) CONJUGATE type deriver works for very restricted
4595 ** out-of-line type testers for character strings are available.
4596 ** EQUAL compiler transform understands specialness of objects
4598 ** accessing double-floats stored on the stack now works on x86-64.
4599 ** debugger internals could sometimes create invalid lispobjs,
4600 resulting in GC crashes.
4601 ** MISC.548: type check weakening can convert required type into
4603 ** initialization forms for bindings are not in scope of free special
4606 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
4607 * incompatible change: thread support for non-NPTL systems has
4608 been removed - locking is buggy and unreliable. A threaded
4609 SBCL build will now warn at startup and refuse to create
4610 new threads, unless futex support is detected in the kernel
4611 * incompatible change: the top level REPL now has only an ABORT
4612 restart associated with it, not TOPLEVEL and ABORT as it used to.
4613 TOP and TOPLEVEL are now available as debugger commands for
4614 returning to the top level.
4615 * incompatible change: forms evaluated in the REPL now use the
4616 global optimization policy.
4617 * incompatible change: user- and system-initialization files are
4618 no longer processed with LOAD, but by READ and EVAL; hence the
4619 global optimization policy, startup package, readtable, etc,
4621 * The .fasl file format number has been incremented because of
4622 various incompatible changes.
4623 * internal entry point details and argument counts no longer appear
4624 in backtraces unless explicitly requested by setting
4625 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
4626 * built-in and standard functions no longer have names like "top
4627 level local call to FOO".
4628 * fixed bug 32: functions defined in non-null lexical environments
4629 now have more legible printed representation
4630 * fixed bug 33: functions defined in non-null lexical environemnts
4631 are now more amenable to inspection by INSPECT.
4632 * workaround for bug 354: XEPs no longer appear in backtraces unless
4633 explicitly requested.
4634 * fixed bug: receiving the signal which results from attempting to
4635 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
4636 SIGBUS on other *BSDs) on architectures where the C stack is also
4637 the Lisp stack (x86 and x86-64) from foreign code no longer leads
4638 to debugger confusion or wild instability. (reported by Cheuksan
4640 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
4641 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
4642 (reported by Lutz Euler)
4643 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
4644 compiled code. (reported by Paul Dietz)
4645 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
4646 specialized parameter to a method to something that is not TYPEP
4647 the specializer is now possible.
4648 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
4649 face of package deletion.
4650 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
4651 pathname. (reported by David Tolpin on c.l.l)
4652 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
4653 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
4654 STRING-STREAM and FILE-STREAM, respectively.
4655 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
4656 than previously; in addition, its test suite is now run on build.
4657 (thanks to Luke Gorrie)
4658 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
4659 * optimization: added a immediate representation for single-floats
4661 * fixed some bugs revealed by Paul Dietz' test suite:
4662 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
4663 ** attempting to create a package with a colliding nickname causes
4664 correctable errors to be signalled.
4665 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
4666 ** several x86-64 backend bugs related to sign-extension of immediate
4669 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
4670 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
4671 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
4673 * fixed loading of multiply forward-referenced layouts.
4674 (thanks to Cheuksan Wang)
4675 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
4676 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
4677 (see COMPILE-FILE documentation for details of :PRINT option)
4678 * fixed bugs 19 and 317: fixed-format floating point printing is
4679 more accurate. This also fixes a bug reported by Adam Warner
4680 related to the ~@F format directive.
4681 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
4683 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
4684 dispatch table if the from-char is a dispatch macro character.
4685 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
4686 by the wordsize no longer ignore the last word. (reported by Lutz
4688 * fixed bug in type checking of dynamic-extent variables. (reported
4690 * optimization: sequence traversal functions use their freedom to
4691 coerce function designators to functions.
4692 * optimization: code with many calls to CLOS methods specialized on
4693 CLOS classes has had redundant type checks removed.
4694 * optimization: added declarations to speed up operations that access
4695 the internal character database (for example STRING-UPCASE)
4696 * optimization: comparison operations between floats and sufficiently small
4697 fixnums no longer create extra rationals
4698 * fixed some bugs related to Unicode integration:
4699 ** portions of multibyte characters at the end of buffers for
4700 character-based file input are correctly transferred to the
4701 start of the buffer at the next read.
4702 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
4703 passing it through to OPEN.
4704 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
4705 argument given to internal calls to OPEN.
4706 ** the built-in comment readers (introduced by character sequences
4707 ";" and "#|") are more forgiving to encoding errors; they will
4708 STYLE-WARN and then attempt to resync the stream at a character
4709 boundary. (thanks to Teemu Kalvas)
4710 * fixed some bugs in the x86-64 port:
4711 ** Negative short int return values from c-calls are sign-extended
4713 ** The stack is aligned to 16-bytes for c-calls, as required by
4714 the ABI. (thanks to Cheuksan Wang)
4715 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
4716 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
4717 for enums. (thanks to Vincent Arkesteijn)
4718 ** Multiple small optimizations and bugfixes for floating point
4720 * fixed some bugs revealed by Paul Dietz' test suite:
4721 ** Space, Tab, Linefeed, Return and Page have the invalid
4722 secondary constituent character trait.
4723 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
4725 ** WITH-INPUT-FROM-STRING should only update the index place on
4727 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
4728 works more reliably.
4729 ** Bit-array operations (BIT-AND and similar) worked incorrectly
4730 with one-dimensional arrays with fill pointers.
4731 ** TYPE-OF failed on a complex with an integer realpart and a
4733 ** compiler failure during type inference for the code of form
4734 (IF (EQL X (THE ...)) ...) (MISC.535).
4736 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
4737 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
4738 platform. The port supports 61-bit fixnums, large memory spaces
4739 and reloading shared object files.
4740 * enhancement: saving cores with foreign code loaded is now
4741 supported on ppc/Darwin in addition to the previously supported
4743 * enhancement: the statistical profiler now walks deeper into the
4744 call stack for more meaningful call-graphs and accrued time
4745 reports (x86/x86-64 only). It also now reports time spent in
4747 * enhancement: it is now possible to trace most individual methods
4748 of a generic function in addition to tracing the generic function
4750 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
4752 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
4753 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
4754 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
4755 produces an error. (thanks to Vincent Arkesteijn)
4756 * bug fix: NAMESTRING on pathnames with :WILD components in their
4757 directories works correctly. (thanks to Artem V. Andreev)
4758 * fixed bug 125: compiler preserves identity of closures. (reported
4760 * bug fixed: functions with &REST arguments sometimes failed with
4761 "Undefined function" when compiled with (DEBUG 3). (reported by
4763 * bug fix: overflow during compiling of setting element of a bit
4764 vector with constant index and value. (reported by Timmy Douglas)
4765 * build fix: fixed the dependence on *LOAD-PATHNAME* and
4766 *COMPILE-FILE-PATHNAME* being absolute pathnames.
4767 * on x86 compiler partially supports stack allocation of dynamic-extent
4769 * GO and RETURN-FROM do not check the extent of their exit points
4770 when compiled with SAFETY 0.
4771 * fixed some bugs related to Unicode integration:
4772 ** encoding and decoding errors are now much more robustly
4773 handled; it should now be possible to recover even from invalid
4774 input or output to the terminal. (thanks to Teemu Kalvas)
4775 ** provided a first cut at implementing STRING-TO-OCTETS and
4776 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
4777 ** altered the SB-MD5 contributed module slightly, changing the
4778 interface just enough for it to be supportable for builds where
4779 lisp characters are not eight bits.
4780 * fixed some bugs revealed by Paul Dietz' test suite:
4781 ** the FORMATTER-generated functions for ~V[ conditionals require
4782 the correct number of arguments.
4783 ** READ-FROM-STRING returns the mandated second value when applied
4784 to displaced strings.
4785 ** the #\Rubout and #\Backspace characters are treated as invalid
4786 constituent characters by the tokenizer.
4788 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
4789 * new feature: reloading changed shared object files with
4790 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4791 * new feature: references to foreign variables and functions
4792 can now be compiled and loaded before the corresponding shared
4793 object file is loaded, as long as the foreign definitions are
4794 available at runtime.
4795 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
4796 supported. (thanks to Dan Debertin)
4797 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
4798 just keywords. (thanks to Vincent Arkesteijn)
4799 * fixed bug #331: structure-class instances corresponding to
4800 DEFSTRUCT forms are now created eagerly.
4801 * fixed bug #345: backtraces from calls to undefined functions work
4802 on x86 as well. Related bug #61 is now also partially fixed on x86
4803 (backtraces from throws to unknown catch tags.)
4804 * bug fix: lambda-list parsing is now stricter vrt. order and number
4805 of lambda-list keywords.
4806 * bug fix: as specified by AMOP, an error is signalled if a
4807 class-option appears multiple times in a DEFCLASS form. (reported
4809 * bug fix: RANDOM can be compiled when the compiler derives the type
4810 of its numeric argument as a disjoint set of small integers.
4811 (reported by Paul Dietz)
4812 * bug fix: starting a core saved with shared objects loaded when
4813 those objects are not available no longer causes threaded SBCL to
4814 hang. (reported by Sean Ross)
4815 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
4817 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
4818 argument, which must always be NIL. (reported by Kalle Niemitalo)
4819 * bug fix: printing 1.0d+23 no longer results in an error.
4820 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
4821 * bug fix: structure slot setters preserve evaluation order. (thanks
4823 * fixed some bugs related to Unicode integration:
4824 ** RUN-PROGRAM can allow its child to take input from a Lisp
4825 stream. (reported by Stefan Scholl)
4826 ** ASDF-INSTALL successfully downloads .tar.gz files in all
4827 locales. (reported by Ken Causey)
4828 * fixed some bugs revealed by Paul Dietz' test suite:
4829 ** INCF, DECF and REMF evaluate their place form as specified in
4831 ** FORMATTER expands ~{ ~} iteration directives with V or #
4832 parameters correctly.
4833 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4834 consequent uses no arguments correctly.
4835 ** the system has a partial understanding of the (COMPLEX RATIO)
4837 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4840 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4841 * new feature: a build-time option (controlled by the :SB-UNICODE
4842 keyword feature, enabled by default) for building the system with
4843 support for the entire 21-bit character space defined by the
4845 * new feature: the system now has rudimentary external-format
4846 support; the primary user-visible change at this time is that
4847 characters with the high bit set (such as lower-case-e-acute) will
4848 print correctly to a terminal in a UTF-8 environment.
4849 * minor incompatible change: BASE-CHAR no longer names a class;
4850 however, CHARACTER continues to do so, as required by ANSI.
4851 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4852 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4853 has been moved to the SB-EXT package (temporarily re-exported from
4855 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4856 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4858 * fixed bug #351: better error-handlind and reporting for malformed
4860 * fixed bug #350: bignum-printing is now more memory-efficient,
4861 allowing printing of very large bignums, eg. (expt 2 10000000).
4862 (reported by Bruno Haible)
4863 * fixed bug #302: better primitive-type selection for intersection
4865 * fixed bug #308: non-graphic characters now all have names, as
4866 required. (reported by Bruno Haible)
4867 * bug fix: redefining a class with different superclasses now correctly
4868 removes it from the direct-subclasses of its previous superclasses.
4869 (reported by David Morse)
4870 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4871 new value now works. (reported by Bruno Haible)
4872 * bug fix: correct canonicalization of multiple non-standard slot
4873 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4874 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4875 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4876 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4877 now exists, an signals an error.
4878 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4879 during macroexpansion for non-iteration variables as well. (reported
4880 by Bruno Haible for CMUCL)
4881 * bug fix: Cyclic structures and unprintable objects in compiler
4882 messages no longer cause errors. (reported by Bruno Haible)
4883 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4884 and READ-FROM-STRING all now return a primary value of NIL if
4885 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4886 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4887 (reported by Bruno Haible for CMUCL)
4888 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4889 do not designate a condition. (reported by Bruno Haible for
4891 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4892 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4893 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4894 permitting resolution in favour of any of the conflicting symbols.
4895 (reported by Bruno Haible for CMUCL)
4896 * bug fix: EQUAL compiler optimizations is less aggressive on
4897 strings which can potentially compare true despite having distinct
4898 specialized array element types.
4899 * bug fix: unit enumerations can be defined without dividing by
4900 zero. (thanks to Vincent Arkesteijn)
4901 * FORMAT compile-time argument count checking has been enhanced.
4902 (report from Bruno Haible for CMUCL)
4903 * a partial workaround for the bug 262: the compiler does not try to
4904 inline-expand a local function doing RETURN-FROM from a deleted
4905 BLOCK. (thanks to Peter Denno for the bug report and to David
4906 Wragg for the simple test case)
4907 * fixed some bugs revealed by Paul Dietz' test suite:
4908 ** RENAME-PACKAGE allows all package designators as new package
4910 ** constraint propagation and lambda variable substitution are
4911 more cautious in dealing with partially deleted code.
4912 ** compiler sometimes lost reoptimization passes.
4913 ** CERROR, given a condition as condition designator, passes its
4914 remaining arguments to the continue format control without
4916 ** Case-altering FORMAT directives work correctly on non-ASCII
4918 ** The REAL type specifier handles bounds outside the floating
4919 point ranges without signalling FLOATING-POINT-OVERFLOW.
4920 ** Functions with IR1-transformations can create intercomponent
4921 references to global functions.
4922 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4924 ** FORMAT ~R treats a nil value for its first parameter correctly.
4926 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4927 * enhancement: saving cores with foreign code loaded is now
4928 supported on x86/NetBSD and sparc/Linux in addition to the previously
4929 supported platforms.
4930 * bug fix: on some platforms repeated installations caused multiple
4931 copies of HTML documentation to be installed -- should not happen
4932 any more. (reported by Stefan Scholl)
4933 * bug fix: parsing self-recursive alien record types multiple times
4934 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4935 original patch by Helmut Eller for CMUCL)
4936 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4937 (thanks to Richard Kreuter)
4938 * bug fix: defining classes whose accessors are methods on existing
4939 generic functions in other (locked) packages no longer signals
4940 bogus package lock violations. (reported by François-René Rideau)
4941 * bug fix: special variables as DEFMETHOD parameters no longer have
4942 associated bogus type declarations. (reported by David Wragg and
4944 * bug fix: read-write consistency on streams of element-type
4945 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4946 * bug fix: redefiniton of the only method of a generic function with
4947 no DEFGENERIC no longer emits a full WARNING. In addition,
4948 redefinition of generic functions with no DEFGENERIC to an
4949 incompatible lambda list now signals an error. (thanks to Zach
4951 * bug fix: DEFGENERIC now works even when there's a function of the
4952 same name in an enclosing lexical environment. (thanks to Zach
4954 * fixed compiler failure, caused by instrumenting code during
4955 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4956 * optimization: added loop analysis and improved register allocation
4957 * fixed some bugs revealed by Paul Dietz' test suite:
4958 ** POSITION on displaced vectors with non-zero displacement
4959 returns the right answer.
4960 ** (SIMPLE-STRING) is a valid type specifier for sequence
4962 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4964 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4965 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4967 ** The justification version of the FORMAT ~< directive treats
4968 non-zero minpad parameter correctly.
4970 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4971 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4972 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4973 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4974 the supported interface.
4975 * new feature: Single-stepping of code compiled with DEBUG 2 or
4976 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4977 * new feature: saving cores with foreign code loaded is now
4978 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4979 Timothy Moore's work for CMUCL)
4980 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4981 parameters to * instead of NIL if no initform is supplied.
4982 (reported by Johan Bockgaard)
4983 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4984 correctly when FUNCALL appears as the car of the form. Note:
4985 despite this FUNCALL forms are not currently subject to
4986 compiler-macro expansion. (port of Raymond Toy's fix for the
4987 same from CMUCL, reported by Johan Bockgaard)
4988 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4989 (thanks for Teemu Kalvas)
4990 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4991 case instead of terminating the iteration (thanks for Julian
4992 Squires, Sean Champ and Raymond Toy)
4993 * bug fix: incorrect expansion of defgeneric that caused a style
4994 warning. (thanks for Zach Beane)
4995 * bug fix: slot accessor effective method computation works properly
4996 for classes with multiple non-standard applicable methods on
4997 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4998 * on x86 compiler supports stack allocation of results of LIST and
4999 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
5000 CMUCL implementation by Gerd Moellmann)
5001 * fixed some bugs revealed by Paul Dietz' test suite:
5002 ** FORMAT strings with both the ~<~:;~> form of the justification
5003 directive and pretty-printing directives cause an error.
5005 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
5006 * incompatible change: the internal functions
5007 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
5008 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
5009 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
5010 instead of the old functions.
5011 * new feature: on platforms where "dladdr" is available foreign
5012 function names now appear in backtraces. (based on Helmut Eller's
5014 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
5015 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
5017 * documentation: ASDF manual is now distributed with SBCL.
5018 * bug fix: SBCL can now load its contributed modules with REQUIRE
5019 even if the system-provided entries have been removed from
5020 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
5022 * bug fix: backtraces involving undefined functions or assembly
5023 routines are more informative. (thanks to Brian Downing)
5024 * bug fix: mutually referent alien structures now work correctly.
5025 (reported by Rick Taube)
5026 * bug fix: structures defined by WITH-ALIEN can be referred to
5027 within other definitions in the same WITH-ALIEN.
5028 * bug fix: division operators (MOD, TRUNCATE and the like) with
5029 constant zero divisors and integer dividends no longer generate
5031 * bug fix: provide default methods for INPUT-STREAM-P and
5032 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
5033 * bug fix: improve the detection and resolution of MOP metacycles
5034 (where effective method computation depends on the generic function
5035 having its effective method computed). (reported by Bruno Haible)
5036 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
5037 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
5038 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
5039 * bug fix: pathnames with relative directory components can be
5040 represented relative to default pathnames.
5041 * optimization: in taking the GCD of bignums, reduce the two bignums
5042 to approximately the same size (using Euclid's algorithm) before
5043 applying the more sophisticated binary GCD. (thanks to Juho
5045 * optimization: COUNT on bitvectors now operates word-at-a-time.
5046 * optimization: ASH with a positive, but not necessarily constant,
5047 (leftwards) shift, when in a modular context, is compiled to a
5049 * fixed some bugs revealed by Paul Dietz' test suite:
5050 ** FORMAT variable parameters ("~V<char>") are defaulted properly
5051 if the corresponding argument is NIL.
5052 ** FORMAT directives accepting a minpad parameter treat negative
5054 ** literal commas as character parameters to FORMAT directives are
5056 ** literal spaces directly after ~<Newline> directives within a
5057 format-logical-block (~:< ~@:>) do not induce :FILL-style
5058 conditional newlines.
5059 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
5060 as specified: it no longer includes conditional newlines).
5061 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
5063 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
5064 :PER-LINE-PREFIX argument does not evaluate to a string.
5066 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
5067 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
5068 the manual for details; for now, package locks can be disabled by
5069 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
5070 if no major problems are found then it is likely that they will be
5071 compiled in unconditionally.
5072 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
5073 unsupported operators on all platforms. To load a shared library
5074 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
5075 object file, link it into a shared library outside of SBCL and
5076 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
5078 * bug workaround: ROOM T and the GC were not working together
5079 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
5080 reporting facility aren't preserved. That reporting has been
5081 disabled, so now until and unless someone figures out how to make it
5082 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
5083 * minor incompatible change: as threatened around sbcl-0.8.0, the
5084 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
5085 The symbols are also exported from SB-PCL for backwards
5086 compatibility, but more so than before SB-PCL should be treated as
5087 an implementation-internal package.
5088 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
5090 * the SB-SPROF contrib now works on (most) non-x86 architectures.
5091 It is known as of this release not to work on the Alpha, however.
5092 * fixed bug #167: errors signalled due to illegal syntax in method
5093 bodies are now more legible.
5094 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
5095 designators and can hence be used with TYPEP.
5096 * fixed bug #333: CHECK-TYPE now ensures that the type error
5097 signalled, if any, has the right object to be accessed by
5098 TYPE-ERROR-DATUM. (reported by Tony Martinez)
5099 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
5100 5.1.2.3 for multiple-value place subforms. (reported by Kalle
5102 * fixed bug #334: programmatic addition of slots using specialized
5103 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
5104 and :ALLOCATION :CLASS slots.
5105 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
5106 float exponents. (rereported by Peter Seibel)
5107 * fixed a bug: #\Space (and other whitespace characters) are no
5108 longer considered to be macro characters in standard syntax by
5109 GET-MACRO-CHARACTER.
5110 * fixed bug: initialization of condition class metaobjects no longer
5111 causes an instance of the condition to be created. (reported by
5113 * fixed bug: it is now possible to have slots such that
5114 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
5115 description is neither :INSTANCE nor :CLASS.
5116 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
5117 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
5118 SLOT-VALUE-USING-CLASS), and no longer causes errors with
5119 non-standard SLOT-DEFINITION-ALLOCATION values.
5120 * fixed bugs: various race conditions handling exiting threads.
5121 CL-PPCRE's thread torture test now passes.
5122 * fixed arguably-a-bug: GC time proportional to number of threads in
5123 system even when most of them are idle
5124 * optimization: improved performance of BIT and SBIT on bit-vectors.
5125 * .fasl file incompatibility: The fasl file version number has
5126 been incremented because of changes associated with package locks.
5128 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
5129 * minor incompatible change: the system no longer provides
5130 optimization hints (conditions which are TYPEP
5131 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
5132 mode; these hints are still emitted when higher SPEED optimization
5134 * new contrib module: a sampling profiler (profiling by statistical
5135 sampling, rather than by instrumenting functions) is available as
5136 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
5137 * the behaviour of the standard function ED is now customizeable by
5138 third parties through a hook variable: see ED's documentation
5139 string for information on the protocol.
5140 * the compiler no longer emits efficiency notes for (FUNCALL X)
5141 when the type of X is uncertain under default optimization
5143 * fixed bug 276: mutating a binding of a specialized parameter to a
5144 method to something that is not TYPEP the specializer is now
5146 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
5147 exhibit the required behaviour on the x86 platform. (thanks to
5148 Peter van Eynde, Eric Marsden and Bruno Haible)
5149 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
5150 even for difficult arguments. (reported by Peter Graves)
5151 * fixed bug 141a: the backquote printer now descends quoted
5153 * fixed another bug in backquote printing: no more destructive
5154 modification of the form's list structure. (reported by Brian
5156 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
5157 move between its address being taken and the call to
5158 interrupt_thread, fixing a crashing race condition.
5159 * the SB-POSIX contrib implementation has been adjusted so that it
5160 no longer exhibits ridiculously poor performance when constructing
5161 instances corresponding to C structs.
5163 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
5164 * minor incompatible change: the sb-grovel contrib now treats C
5165 structures as alien (in the sense of SB-ALIEN) objects rather than
5166 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
5167 has implications for memory management of client code
5168 (sb-grovel-returned objects must now be manually managed) and for
5169 type safety (alien objects now have full types).
5170 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
5171 used to control emission of compiler diagnostics, rather than the
5172 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
5173 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
5174 quality should be considered deprecated.
5175 * install.sh now installs the user manual as well
5176 * (not quite a new documentable feature, but worth considering in
5177 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
5178 beginnings of a semantically meaningful condition hierarchy is
5179 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
5181 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
5182 designator as the defaults argument.
5183 * fixed bug: Displaced arrays whose displaced-to array has become
5184 too small now cause ARRAY-DIMENSION to signal an error, providing
5185 for safer bounds-checking. (reported by Bruno Haible)
5186 * fixed bug: DEFCLASS slot definitions with identical :READER and
5187 :WRITER names now signal a reasonable error. (reported by Thomas
5189 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
5191 * fixed bug: Invalid slot specification errors now print correctly.
5192 (thanks to Zach Beane)
5193 * fixed bug 320: Shared to local slot value transfers in class
5194 redefinitions now happen corrently from superclasses as
5195 well. (reported by Bruno Haible)
5196 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
5198 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
5199 improper lists correctly. (reported by Bruno Haible)
5200 * fixed bug 313: source-transform for <fun-name> was erroneously
5201 applied to a call of a value of a variable with name <fun-name>.
5202 (reported by Antonio Menezes Leitao)
5203 * fixed bug 307: The obsolete instance protocol ensures that
5204 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
5205 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
5206 remove dead unknown-values globs from the middle of the stack.
5207 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
5208 easier to resume long computations after using *BREAK-ON-SIGNALS*
5209 to diagnose and fix failures. (thanks to Nikodemus Siivola)
5210 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
5211 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
5212 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
5213 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
5214 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
5216 * fixed a (fairly theoretical) bug in string printing: if
5217 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
5218 does not have array-element-type equal to the most general string
5220 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
5221 function name. (thanks to Nikodemus Siivola)
5222 * fixed bug: compile-time format string checker failed on
5223 non-closed ~{. (reported by Thomas F Burdick)
5224 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
5225 don't warn on legal loop code involving more than one aggregate
5226 boolean. (thanks to Nikodemus Siivola)
5227 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
5228 in keyword position to MAKE-PACKAGE was not being reported as
5230 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
5231 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
5233 * fixed bugs 280 and 312: the checking for multiple definitions in a
5234 file is less likely to become confused by uses of inline
5236 * fixed bug: the #S reader macro performs the keyword coercion
5237 specified for slot names. (reported by Kalle Niemitalo)
5238 * fixed bug: lambda lists may contain symbols whose names start with
5239 & but are not lambda-list-keywords; their occurrence triggers a
5241 * fixed bug 321: define-method-combination argument lambda lists do
5242 not cause invalid code to be generated when &optional or &aux
5243 variables have default values. (reported by Bruno Haible)
5244 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
5245 have CLOS classes; this appears also to have fixed reported
5246 instability in stack exhaustion detection.
5247 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
5248 MUFFLE-WARNING when no associated restart is present is now
5250 * optimization: rearranged the expansion of various defining macros
5251 so that each expands into only one top-level form in a
5252 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
5254 * optimization: used a previously little-used slot in symbols to
5255 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
5257 * fixed some bugs revealed by Paul Dietz' test suite:
5258 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
5260 ** Fixed an optimization bug related to inheritance of initforms
5261 from local to shared slots.
5262 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
5263 ** CAST optimizer forgot to flush argument derived type.
5264 ** print/read consistency on floats is now orders of magnitude
5265 more likely. (thanks also to Bruno Haible for a similar report
5267 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
5268 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
5269 for objects of type REAL. Make it so.
5270 ** SXHASH is specified (infelicitously) to respect similarity,
5271 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
5272 it so. (thanks to Markus Ziegler)
5273 ** on the Alpha, the compiler succeeds in compiling functions
5274 returning a known number of arguments greater than 63.
5275 ** fixed handling of invalid NIL arguments in keyword position
5277 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
5279 ** provided a readably-printable representation for RANDOM-STATE
5281 ** ensured that pathnames, where they have a namestring, always
5282 print using #P"..." syntax.
5284 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
5285 * Support for the forthcoming 2.0 version of the NetBSD kernel
5286 running on x86 hardware has been added. (thanks to Perry
5287 E. Metzger most immediately, and others for their past work)
5288 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
5289 current release version; SBCL's OpenBSD support had been broken
5290 since about the time of OpenBSD's switch to ELF binary format.)
5291 * [placeholder for DX summary]
5292 ** user code with &REST lists declared dynamic-extent, under high
5293 speed or space and low safety and debug optimization policy.
5294 * The manual has been converted to Texinfo format and the debugger
5295 chapter from the cmucl manual has been added.
5296 * A facility has been added to extract documentation strings from
5297 sbcl and store them as Texinfo-formatted snippets for inclusion in
5298 the manual (via Texinfo's @include directive)
5299 * bug fix: compiler emitted division in optimized DEREF. (thanks for
5300 the test case to Dave Roberts)
5301 * bug fix: multidimensional simple arrays loaded from FASLs had fill
5302 pointers. (reported by Sean Ross)
5303 * bug fix: PROFILE output is printed nicely even for large numerical
5304 values. (thanks to Zach Beane)
5305 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
5306 greater than 32 handle EOF correctly.
5307 * bug fix: on X86 an immediate argument of the IMUL instruction is
5308 correctly printed in disassembly. (thanks to Lutz Euler)
5309 * bug fix: class slots in redefined classes preserve their old
5310 values. (thanks to Bruno Haible and Nikodemus Siivola)
5311 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
5312 succeeds. (reported by Marco Baringer)
5313 * fixed some bugs revealed by Paul Dietz' test suite:
5314 ** READ-SEQUENCE now works on ECHO-STREAMs.
5315 ** RATIONALIZE works more according to its specification. (thanks
5318 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
5319 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
5320 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
5321 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
5322 should matter to you only if you rebind the printer control
5323 variables and then find you want different bindings in the
5324 debugger than in the ordinary execution of your program.)
5325 * The runtime build system has been tweaked to support building
5326 (on SPARC/SunOS) using a C compiler which invokes Sun's own
5327 assembler and linker. (thanks to Nikodemus Siivola)
5328 * Unbound, undefined, undeclared variables now trigger full
5329 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
5330 more often programmer error than deliberate exploitation of undefined
5332 * optimization: the hash algorithm for strings has changed to one
5333 that is less vulnerable to spurious collisions. (thanks to Juho
5335 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
5336 needless bounds checking. (thanks to Juho Snellman)
5337 * optimization: implemented multiplication as a modular
5338 (UNSIGNED-BYTE 32) operation on the PPC backend.
5339 * fixed some bugs revealed by Paul Dietz' test suite:
5340 ** ADJUST-ARRAY now copies the datum in a zero rank array if
5342 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
5343 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
5344 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
5346 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
5348 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
5350 ** ECHO-STREAMs no longer attempt to echo the end of file value to
5351 their output stream on EOF from read.
5352 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
5353 have been read to end-of-file.
5354 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
5356 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
5357 description of determination of which consecutive characters
5359 ** Printing the "Space" character with escaping on now yields "#\\ ",
5360 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
5361 ** Reading floating-point numbers with *READ-BASE* set to a number
5362 less than 10 works correctly.
5363 ** Reading floating-point numbers with *READ-BASE* set to a number
5364 more than 10 works correctly.
5365 ** Printing with *PRINT-READABLY* targets the standard readtable, not
5366 the readtable currently in effect.
5368 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
5369 * minor incompatible change: parsing of namestrings on a physical
5370 (Unix) host has changed; numbers after the final #\. in a
5371 namestring are no longer interpreted as a version field. This is
5372 intented to be largely invisible to the user, except that the
5373 meaning of the namestring "*.*.*" has changed: it now refers to a
5374 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
5375 should usually be replaced by
5376 (make-pathname :name :wild :type :wild :version :wild)
5377 with the added benefit that this is more likely to be portable.
5378 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
5379 option to OPEN now signals an error if the file being opened
5380 exists; this may have an impact on existing code.
5381 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
5382 signals received, on the PowerPC platforms (both Linux and
5383 Darwin). (thanks to Pierre Mai for pointing out the location of
5385 * several fixes on OS X: The system now builds and runs cleanly on
5386 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
5387 (thanks to Brian Mastenbrook)
5388 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
5389 second-resolution: integer multiples of 1/3600 between -24 and 24.
5390 (thanks to Vincent Arkesteijn)
5391 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
5392 type when called with 1 argument; PEEK-CHAR checked type of
5393 PEEK-TYPE only after having read first character from a
5394 stream. (reported by Peter Graves)
5395 * bug fix: the garbage collector now has much better locality
5396 behaviour, and in particular no longer treats all memory as being
5397 exhausted when many small objects point to each other in a deeply
5399 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
5400 recognized as being TYPEP their class.
5401 * bug fix: the PUSHNEW documentation string has been corrected.
5402 (thanks to Vincent Arkesteijn)
5403 * bug fix: defaulting of the value for the last of an atypically
5404 large number of multiple values being bound was not being
5405 performed correctly on the Alpha or PPC platforms
5406 * optimization: implemented multiplication as a modular
5407 (UNSIGNED-BYTE 32) operation on the x86 backend.
5408 * optimization: SEARCH on simple-base-strings can now be open-coded.
5409 (see also contrib/compiler-extras.lisp for inspiration for
5410 teaching the compiler about the Boyer-Moore algorithm).
5411 * value, returned by MAX (and MIN) called with several EQUALP, but
5412 not EQL, arguments now does not depend on compiler settings.
5413 * fixed some bugs revealed by Paul Dietz' test suite:
5414 ** in stack analysis liveness information is propagated from
5415 non-local entry points.
5416 ** pathwise CAST removing failed when the CAST node did not start
5418 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
5419 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
5421 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
5422 host is already defined.
5423 ** RENAME-FILE works on streams instead of signalling an internal
5425 ** PEEK-CHAR uses the current readtable when determining whether
5426 or not a character is whitespace.
5427 ** MERGE-PATHNAMES handles the case when the pathname does not
5428 specify a name while the default-pathname specifies a version.
5429 ** Pathnames now stand a better chance of respecting print/read
5431 ** Attempting to use standardized file system operators with a
5432 pathname with invalid :DIRECTORY components signals a
5434 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
5436 ** DIRECTORY on logical pathnames is more correct.
5437 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
5438 signal a TYPE-ERROR if their argument is not a stream.
5439 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
5440 designator argument does not designate a stream.
5441 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
5442 examining the synonym.
5443 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
5445 ** OPEN and WITH-OPEN-STREAM allow opening streams with
5446 element-type larger than ([UN]SIGNED-BYTE 32).
5448 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
5449 * When built with the :SB-FUTEX feature, threaded builds now take
5450 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
5451 for faster/more reliable mutex and condition variable support.
5452 * Incompatible change (but one you probably shouldn't have been using
5453 anyway): the interface and code for arbitrating between multiple
5454 threads in the same user session has been redesigned.
5455 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
5456 error when called without an explicit environment argument.
5457 (thanks to Nikodemus Siivola)
5458 * bug fix: buffered :DIRECTION :IO streams are less likely to become
5459 confused about their position. (thanks to Adam Warner and Gerd
5461 * bug fix: Pretty printing backquoted forms with unquotations in the
5462 argument list position of various code constructs such as LAMBDA
5463 now works correctly. (reported by Paul Dietz)
5464 * bug fix: Pretty printing unquotations no longer loses all
5465 stream position information.
5466 * optimization: performance of string output streams is now less
5467 poor for multiple small sequence writes.
5468 * optimization: performance of CSUBTYPEP in the presence of complex
5469 expressions involving CONS and NOT many times has been improved.
5470 (reported by Paul Dietz)
5471 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
5473 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
5474 streams for the REPL, for the debugger, and so on. (thanks to
5476 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
5477 * fixed some bugs revealed by Paul Dietz' test suite:
5478 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
5479 is ignored if it is too small, rather than propagating through
5480 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
5481 ** extremely complex negations of CONS types were not being
5482 sufficiently canonicalized, leading to inconsistencies in
5484 ** VALUES tranformer lost derived type.
5486 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
5487 * fixed a bootstrapping bug: the build process no longer assumes
5488 that the various BOOLE-related constants have the same value in
5489 host and target lisps. (noted by Paul Dietz' test suite on an
5490 SBCL binary built from CLISP)
5491 * The system can now be dynamically linked on the MIPS platform,
5492 which enables dynamic loading of foreign code from Lisp. (thanks
5493 to Ralf Baechle for discussions on the MIPS ABI)
5494 * The system now records debugging information for its own source
5495 files in a filesystem-position-independent manner, relative to
5496 the "SYS" logical host.
5497 * fixed a compiler bug: MV-LET convertion did not check references
5498 to the "max args" entry point. (reported by Brian Downing)
5499 * tweaked disassembly notes to be less confident about proclaiming
5500 some instruction as an LRA. (thanks to Brian Downing)
5501 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
5502 now each have their own history, command character, and other
5503 characteristics. (thanks to David Lichteblau)
5504 * fixed some bugs revealed by Paul Dietz' test suite:
5505 ** compiler failure in compiling LOGAND expressions including a
5507 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
5508 shift greater than 32.
5509 ** FLUSH-DEST did not mark blocks for type check regeneration.
5510 ** HANDLER-CASE failed to accept declarations in handler clauses
5511 in some circumstances.
5513 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
5514 * New code in contrib/sb-introspect (still probably not entirely
5515 stable yet) provides some support for smart Lisp development
5516 environments like SLIME.
5517 * The conditions signalled for errors occurring when loading .fasl
5518 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
5519 in a way which should help ASDF recover gracefully.
5520 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
5521 stuff has been cleaned up. If you code contrib/ stuff, this might
5522 affect you, and you can look at contrib/README, contrib/STANDARDS,
5523 and/or the 0.8.4.27 diff to check.
5524 * In full calls the compiler now does not generate checks for declared
5525 argument types for all arguments.
5526 * various threading fixes
5527 ** and some experimental patches which didn't make it into
5528 the main tree for this release, but which are shipped in
5529 contrib/experimental-thread.patch as a possible fix for some
5530 failures (deadlock, spinning...) in GC-intensive multithreaded
5532 * fixed PPC build problem (source code incompatibility of different
5533 library versions): added offsetof() hackery which attempts to divine
5534 where glibc maintainers put uc_mcontext today
5535 * fixed bug 282: compiler does not trust type assertions while passing
5536 arguments to a full call.
5537 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
5538 &OPTIONAL VALUES type parameter.
5539 * fix bug 214: algorithm for noting rejected templates is now more
5540 similar to that of template seletion. (also reported by rydis on
5542 * fixed bug 141b: printing backquoted information readably and prettily
5543 inserts a space where necessary.
5544 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
5545 (CHARACTER 10) are now reported as errors, rather than propagated
5546 as unknown types. (reported by piso on #lisp)
5547 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
5548 with values NIL and :ERROR. (thanks to Milan Zamazal)
5549 * fixed bug 191c: CLOS now does proper keyword argument checking as
5550 described in CLHS 7.6.5 and 7.6.5.1.
5551 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
5552 longer raise an error; further, using a list as a for-as-arithmetic
5553 counter now raises a meaningful error.
5554 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
5555 now understood by sequence creation functions such as MAKE-SEQUENCE
5557 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
5558 a STRING-INPUT-STREAM.
5559 * compiler enhancement: SIGNUM is now better able to derive the type
5561 * type declarations inside WITH-SLOTS are checked. (reported by
5563 * fixed some bugs revealed by Paul Dietz' test suite:
5564 ** incorrect optimization of TRUNCATE for a positive first
5565 argument and negative second.
5566 ** compiler failure in let-convertion during flushing dead code.
5567 ** compiler failure while deriving type of TRUNCATE on an
5568 interval, containing 0.
5569 ** ASH of a negative bignum by a negative bignum count now returns
5571 ** intersection of CONS types now canonicalizes properly, fixing
5572 inconsistencies in SUBTYPEP.
5574 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
5575 * incompatible change: The --disable-debugger command line
5576 option now clobbers the debugger at a more fundamental
5577 level, by redefining #'INVOKE-DEBUGGER instead of by
5578 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
5579 is specified by ANSI to ignore *DEBUGGER-HOOK* and
5580 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
5581 enter the debugger REPL and then suffer recursive errors
5582 because *DEBUG-IO* is also messed up in --disable-debugger mode;
5583 while under the new system, BREAK in --disable-debugger mode
5584 terminates the system just as an unhandled error would.
5585 * fixed compiler performance when processing loops with a step >1;
5586 * bug fix: DOCUMENTATION now retrieves generic function
5587 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
5588 support has been systematized, and now supports the methods
5589 specified by ANSI, along with a default method and a method for
5590 slot documentation. (reported by Nathan Froyd)
5591 * bug fix: effective methods associated with a generic function are
5592 no longer cached over a change of that generic function's method
5593 combination. (reported by Andreas Fuchs)
5594 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
5595 names a non-existent directory. (thanks to Andreas Fuchs)
5596 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
5597 the PPC platform, lead to stack corruption; this has been fixed.
5598 (reported by Rainer Joswig)
5599 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
5600 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
5601 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
5602 arithmetic in general, is now much more reliable on the PPC
5604 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
5605 platform now returns the right answer.
5606 * optimization: restored some effective method precomputation in
5607 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
5608 precomputation is now tunable.
5609 * optimization: compiler-internal data structure use has been
5610 reviewed, and changes have been made that should improve the
5611 performance of the compiler by about 20%.
5612 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
5613 simple-base-strings and simple-bit-vectors is improved.
5614 * optimization: the optimization of 32-bit logical and arithmetic
5615 functions introduced in version 0.8.3 on the x86 has been
5616 implemented on the mips, ppc and sparc platforms; an
5617 implementation of the same facility, but for 64-bit arithmetic,
5618 has been added for the alpha.
5619 * microoptimization: the compiler is better able to make use of the
5620 x86 LEA instruction for multiplication by constants.
5621 * bug fix: in some situations compiler did not report usage of
5622 generic arithmetic in (SPEED 3) policy.
5623 * bug 145b fix: compiler used wrong type specifier while converting
5624 MEMBER-types to numeric.
5625 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
5627 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
5628 index argument now works properly on the Alpha platform.
5629 * bug fix: floating point exception treatment on the Alpha platform
5631 * bug fix: FILE-POSITION works much better on string input and
5632 output streams. (thanks to Nikodemus Siivola)
5633 * bug fix: many threading/garbage collection symptoms sorted.
5634 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
5635 might be pseudo-atomic.
5636 * internal change: Stopping for GC is now done with signals not
5637 ptrace. GC is now done in whichever thread wanted it, instead of
5639 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
5641 * bug fix: result form in DO is not contained in the implicit
5643 * incompatible change: ICR structure is changed; the value part of
5644 CONTINUATION is now called LVAR; corresponding functions are
5645 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
5646 * added type deriver for ISQRT (thanks to Robert E. Brown).
5647 * bug fix: better support for loading from the command line when an
5648 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
5650 * fixed some bugs revealed by Paul Dietz' test suite:
5651 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
5652 ** ROUND and FROUND now give the right answer when given very
5653 small float arguments.
5654 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
5656 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
5657 ** (GCD 0 <negative-integer>) returned <negative-integer>.
5658 ** LCM should return a non-negative integer.
5659 ** PARSE-INTEGER returned the index of a terminator instead of the
5660 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
5661 ** PARSE-INTEGER returned an incorrect index being applied to a
5663 ** LCM with two arguments of 0 returns 0 rather than signalling
5665 ** unsigned addition of a 32-bit constant with the high bit set no
5666 longer causes an internal compiler error on the x86.
5667 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
5668 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
5669 with negative last argument.
5670 ** byte specifiers with zero size and position no longer cause
5671 an error during type derivation.
5672 ** bignum multiplication on the Alpha platform now returns the
5674 * porting: The system now builds on SuSE AMD64, although it still
5675 generates a 32-bit binary.
5676 * .fasl file incompatibility: The fasl file version number has
5677 been incremented (because of the changes to internal compiler
5678 data structures referred to above).
5680 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
5681 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
5682 more accurately, on the Darwin kernel running on PowerPC hardware.
5683 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
5684 * Compiler code deletion notes now signal a condition of type
5685 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
5686 an associated MUFFLE-WARNING restart.
5687 * The compiler now performs limited argument count validation of
5688 constant format strings in FORMAT, and where appropriate in ERROR,
5689 CERROR and WARN. (thanks to Gerd Moellmann)
5690 * New ASDF-INSTALL contrib can be used for automatic download and
5691 installation of third-party Lisp code from CCLAN or other sites
5693 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
5694 which forces another thread to execute a function supplied by the
5696 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
5697 now accept and act upon their :ELEMENT-TYPE keyword argument.
5698 (reported by Martin Atzmueller, Edi Weitz)
5699 * bug fix: FILE-POSITION now accepts position designators up to
5700 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
5701 is the greater. (thanks to Patrik Nordebo)
5702 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
5703 Kalle Olavi Niemitalo)
5704 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
5705 printable. (reported by Eric Marsden)
5706 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
5707 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
5708 * x86 bug fix in control stack exhaustion checking: now shows backtrace
5709 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
5710 (thanks to Stig Sandoe)
5711 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
5712 UNREAD-CHAR now correctly includes the unread character in the
5713 target sequence. (thanks to Gerd Moellmann)
5714 * bug fix in threaded builds: the system can now be suspended and
5715 resumed by shell job control with minimal disruption.
5716 * bug fixes in times and timezones >2038AD
5717 * better handling of "where is GNU make?" problem in build scripts
5718 (thanks to Nikodemus Siivola)
5719 * new optimization: inside a named function any reference to a
5720 function with the same name is considered to be a self-reference;
5721 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
5722 optimization quality.
5723 * new optimization on x86: logical functions and + now have
5724 optimized (UNSIGNED-BYTE 32) versions, which are automatically
5725 used when the result is truncated to 32 bits.
5726 * VALUES declaration is partially enabled.
5727 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
5728 * fixed some bugs revealed by Paul Dietz' test suite:
5729 ** The system now obeys the constraint imposed by
5730 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
5731 types form a lattice under type intersection.
5732 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
5733 ** ASSOC now ignores NIL elements in an alist.
5734 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
5735 and (1+ MOST-POSITIVE-FIXNUM) answers.
5736 ** The addition of a method with invalid qualifiers to a generic
5737 function does not cause an error to be signalled immediately;
5738 a warning is signalled, and the error is generated only on
5739 calling the generic function.
5740 * changed .fasl file version number, in part to add type codes for
5741 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
5742 obscure ANSI requirements
5744 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
5745 * fixed bug 148: failure to inline-expand a local function left
5746 garbage, confusing the compiler.
5747 * fixed bugs 3cd: structure slot readers perform type check if the
5748 slot can have an invalid value (i.e. it is either not initialized
5749 or can be written with a less specific slot writer).
5750 * bug fix: the compiler now traps array references to elements off
5751 the end of an array; previously, the bounds checking in some
5752 circumstances could go off-by-one.
5753 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
5755 * type declarations for array element types now obey the description
5756 on the CLHS page "Declaration TYPE", as per discussions on
5757 sbcl-help around 2003-05-08. This means that a declaration
5758 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
5759 declaration, all references to BAR will be asserted or assumed
5760 (with THE, so dependent on compiler policy) to involve objects of
5761 type FOO. Note that no such declaration is implied in
5762 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
5763 * declared types of functions from the "Conditions"
5764 chapter. (reported by Paul Dietz)
5765 * bug fix: CERROR accepts a function as its first argument.
5766 * bug fix: NTH an NTHCDR accept a bignum as index
5767 arguments. (reported by Adam Warner)
5768 * optimization: character compare routines now optimize comparing
5769 against a constant character. (reported by Gilbert Baumann)
5770 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
5771 argument now works properly on the MIPS platform.
5772 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
5773 * repeated evaluation of the same DEFSTRUCT, a slot of which is
5774 declared to have a functional type, does not cause an error
5776 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
5777 many :DEFAULT-INITARGS. (reported by Istvan Marko)
5778 * fixed bug: if last continuation of a deleted block has a
5779 destination, this destination should be deleted too. (reported by
5781 * fixed a bug in the bootstrap process: the host compiler's values
5782 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
5783 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
5784 test case from Patrik Nordebo)
5785 * improved the ability of the disassembler on the PPC platform to
5786 provide helpful disassembly notes.
5787 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
5788 the class in more cases than previously.
5789 * bug fix: FILE-POSITION now understands :START and :END for
5790 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
5791 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
5792 8) data. (thanks to David Lichteblau)
5793 * bug fix: it is possible to add a method to a generic function
5794 without lambda list.
5795 * bug fix: reader failed to signal END-OF-FILE inside an
5796 object representation. (reported by Nikodemus Siivola)
5797 * fixed some bugs revealed by Paul Dietz' test suite:
5798 ** LAST and [N]BUTLAST should accept a bignum.
5799 ** condition slot accessors are methods.
5800 ** (VECTOR NIL) is a subtype of STRING.
5802 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
5803 * minor incompatible change: some nonsensical specialized lambda
5804 lists (used in DEFMETHOD) which were previously ignored now signal
5806 * minor incompatible change: the system is now aware of the types of
5807 variables in the COMMON-LISP package, and will signal errors for
5808 most violations of these type constraints (where previously they
5809 were silently accepted).
5810 * minor incompatible change: COMPILE-FILE now uses the freedom
5811 afforded (ANSI 3.2.2.3) to use derived function types for
5812 functions defined in the same file. This also permits the system
5813 to warn on static type mismatches and function
5814 redefinition. (Currently it does not work with high DEBUG level.)
5815 * minor incompatible change: VALUES declaration is disabled.
5816 * When issuing notes, the compiler now signals a condition of type
5817 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
5818 restart for use in user handlers. It is expected that the
5819 COMPILER-NOTE condition will eventually become a condition
5820 supertype to a hierarchy of note types, which will then be
5821 handleable in a similar fashion. However, at the moment, no such
5822 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
5823 but it's an implementation detail, not a classification for the
5825 * Changes in type checking closed the following bugs:
5826 ** type checking of unused values (192b, 194d, 203);
5827 ** template selection based on unsafe type assertions (192c, 236);
5828 ** type checking in branches (194bc).
5829 * A short form of VALUES type specifier has ANSI meaning (it has
5830 increased the number of situations when SBCL cannot perform type
5832 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5833 keywords or constants is permissible.
5834 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5835 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5836 classes. (thanks to Antonio Martinez)
5837 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5838 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5839 argument to a pretty-print stream. Instead, it leaves any such
5840 operations to DESCRIBE-OBJECT methods.
5841 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5843 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5844 lambda lists. (thanks to David Lichteblau)
5845 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5846 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5847 (thanks to Gerd Moellmann)
5848 * fixed bug 246: increased compilation speed of long
5849 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5851 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5853 * DEFCONSTANT now throws a condition of type
5854 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5855 constant to a non-EQL value; CONTINUE and ABORT restarts
5856 respectively change and preserve the value.
5857 * fixed bug 63: The code walker, part of the implementation of CLOS,
5858 is now better at handling symbol macros.
5859 * bug fix: There is no longer an internal implementation type named
5860 CL:LENGTH. (reported by Raymond Toy)
5861 * bug fix: In macro-like defining macros/special operators the
5862 implicit block does not enclose the lambda list.
5863 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5864 enclosed in parentheses) are not suitable as type specifiers, and
5865 their use properly signals an error now.
5866 * bug fix: An argument count mismatch for a type specifier in code
5867 being compiled no longer causes an unhandled error at compile
5868 time, but signals a compile-time warning.
5869 * fixed simple vector readable printing
5870 * bug fix: DESCRIBE takes more care over whether the class
5871 precedence list slot of a class is bound before accessing it.
5872 (reported by Markus Krummenacker)
5873 * bug fix: FORMATTER can successfully compile pretty-printer format
5874 strings which use variants of the ~* directive inside.
5875 * bug fix: SEARCH now applies its TEST predicate to the elements of
5876 the arguments in the correct order. (thanks to Wolfhard Buss)
5877 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5878 in type inference. (thanks to Robert E. Brown)
5879 * bug fix: Reading in symbols with an explicit package name of ""
5880 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5881 * fixed some bugs revealed by Paul Dietz' test suite:
5882 ** NIL is now allowed as a structure slot name.
5883 ** Arbitrary numbers, not just REALs, are allowed in certain
5884 circumstances in LOOP for-as-arithmetic clauses.
5885 ** Multiple class redefinitions before slot access no longer
5886 causes a type error.
5887 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5888 association between the name and a class.
5889 ** Generic functions with non-standard method-combination and over
5890 five methods all of which return constants no longer return NIL
5891 after the first few invocations. (thanks to Gerd Moellmann)
5892 ** CALL-NEXT-METHOD with no arguments now passes the original
5893 values of the arguments, even in the presence of assignment.
5894 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5896 ** DISASSEMBLE works with closures and funcallable instances.
5897 ** ADD-METHOD now returns the generic function, not the new method.
5898 ** FIND-METHOD signals an error if the lengths of the specializers
5899 is incompatible with the generic function, even if the ERRORP
5901 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5902 which its argument is a member.
5903 ** DEFCLASS only redefines the class named by its class-name
5904 argument if that name is the proper name of the class;
5905 otherwise, it creates a new class.
5906 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5907 of the UNBOUND-SLOT condition to the name of the slot.
5908 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5909 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5910 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5911 SLOT-MAKUNBOUND in the specified fashion.
5913 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5914 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5915 cross-compilation host. As a consequence, we can now bootstrap our
5916 way up to SBCL starting with a bare gcc toolchain and human-readable
5917 source code (first the source to CLISP, then the source to SBCL).
5918 * A contributed module containing a partial implementation of the
5919 simple-streams interface has been included. (thanks to Rudi
5921 * A contributed module implementing the RFC1321 Message Digest
5922 Algorithm, known as MD5, has been included.
5923 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5924 no longer has any effect, as the code controlled by this feature
5925 has been deleted. (As far as we know, no-one has ever built using
5926 this feature, and its semantics were confused in any case).
5927 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5928 work on conditions (as required by the ANSI specification),
5929 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5930 expected behaviour on conditions. Users should note, however,
5931 that such behaviour is not required by the ANSI specification,
5932 and so use of this behaviour may render their code unportable.
5933 * fixed some bugs revealed by Paul Dietz' test suite:
5934 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5936 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5937 ** SXHASH on condition objects no longer returns NIL.
5938 ** :ALLOCATION :CLASS slots are better treated; their values are
5939 updated on class redefinition, and initforms inherited from
5940 superclasses are applied.
5941 ** REMOVE-METHOD returns its generic function argument even when
5942 no method was removed.
5943 ** SHARED-INITIALIZE now initializes the values of the requested
5944 slots, including those with :ALLOCATION :CLASS.
5945 ** ALLOCATE-INSTANCE now works on structure classes defined via
5946 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5948 ** SLOT-EXISTS-P now works on conditions, as well as structures
5950 ** MAKE-LOAD-FORM now has the required methods on
5951 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5952 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5953 keyword, and now implements the SLOT-NAMES argument.
5954 ** methods with &OPTIONAL arguments no longer allow too many
5955 arguments to be passed in the call without error.
5956 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5957 option is consistent with the required arguments of the generic
5958 function lambda list.
5959 * bug fix: REQUIRE accepts a string designator. (Thanks to
5961 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5962 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5963 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5964 * bug fix: The compiler now checks for duplicated variables in macro
5966 * bug fix: SETQ on globals returns the correct value.
5967 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5968 not a COMPILER-ERROR (followed by some other strange error on
5969 choosing the CONTINUE restart).
5970 * bug fix: make.sh and friends are now more consistent in the way that
5971 they look for GNU "make".
5973 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5974 * experimental native threads support (on x86 Linux >=2.4 only).
5975 This is not compiled in by default: you need to add :SB-THREAD to
5976 the target features. See the "Beyond ANSI" chapter of the manual
5978 * fix for longstanding nonANSIism: The old distinction between
5979 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5980 The return value from CL:FIND-CLASS is now a CLOS class, and
5981 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5982 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5983 * An interface to the MetaObject Protocol, as described in Kiczales,
5984 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5985 MIT Press, 1991, is available from the SB-MOP package.
5986 * incompatible change: the SB-PCL package should now be considered
5987 a private implementation detail, and no longer a semi-private MOP
5989 * minor incompatible change: due to rearrangement for threads, the
5990 control stack and binding stack are now allocated at arbitrary
5991 addresses instead of being hardcoded per-port. Users affected by
5992 this probably have to be doing advanced things with shared
5993 libraries, and will know who they are.
5994 * minor incompatible change: Previously, all --eval forms used were
5995 processed with READ before any of them were processed with EVAL.
5996 Now each --eval form is processed with both READ and EVAL before
5997 the next --eval form is processed. (Thus package operations like
5998 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5999 work as the user might reasonably expect.)
6000 * minor incompatible change: *STANDARD-INPUT* is now only an
6001 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
6003 * minor incompatible change: Y-OR-N-P is now character-oriented,
6004 not line oriented. Also, YES-OR-NO-P now works without errors.
6005 (thanks to Antonio Martinez)
6006 * sb-aclrepl module improvements: an integrated inspector, added
6007 repl features, and a bug fix to :trace command.
6008 * Known functions, which cannot be open coded by the backend, are
6009 considered to be able to check types of their arguments. (fixing
6010 a bug report by Nathan J. Froyd)
6011 * fixed a bug in computing method discriminating functions: It is
6012 now possible to define methods specialized on classes which have
6013 forward-referenced superclasses. (thanks to Gerd Moellmann)
6014 * fixed evaluation order in optional entries (reported by Gilbert
6016 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
6017 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
6018 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
6019 required-by-AMOP NAME argument, as well as CLASS and
6020 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
6021 * fixed bug 20: DEFMETHOD can define methods using names that are
6022 not the proper names of classes to designate class specializers.
6023 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
6024 Unix file descriptors, instead of blowing up. (thanks to Antonio
6026 * Garbage collection refactoring: user-visible change is that a
6027 call to the GC function during WITHOUT-GCING will not do garbage
6028 collection until the end of the WITHOUT-GCING. If you were doing
6029 this you were probably losing anyway.
6030 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
6031 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
6032 TYPEP the latter but not the former.
6033 * The compiler issues a full WARNING for calls to undefined functions
6034 with names from the CL package.
6035 * MAP-INTO for a vector destination is open coded. (reported by
6036 Brian Downing on c.l.l)
6037 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
6038 documentation string.
6039 * fixed some bugs revealed by Paul Dietz' test suite:
6040 ** COPY-ALIST now signals an error if its argument is a dotted
6042 ** Condition slots are now accessed more correctly in the presence
6043 of multiple initargs for a given slot.
6044 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
6045 exclude restarts of the same name associated with a different
6047 ** DEFCLASS of forward-referenced classes with another
6048 forward-referenced class in the superclasses list no longer
6050 ** Condition slots are now initialized once each, not multiple
6051 times. (thanks to Gerd Moellmann)
6052 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
6054 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
6055 ** NSET-EXCLUSIVE-OR does not return extra elements when its
6056 arguments contain duplicated elements.
6057 ** RESTART-CASE understands local macros.
6058 ** RESTART-CASE associates exactly its own restarts with a condition.
6059 ** ENDP in safe mode checks its argument to be of type LIST.
6060 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
6061 in question is unbound.
6062 ** Optimized MAKE-INSTANCE functions no longer cause internal
6063 assertion failures in the presence of duplicate initargs.
6064 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
6065 ** Side-effectful :DEFAULT-INITARGS have their side-effects
6066 propagated even in the ctor optimized implementation of
6068 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
6070 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
6071 * a better implementation of SXHASH on (simple) bit vectors,
6072 measured both in execution speed and in distribution of results
6073 over the positive fixnums, has been installed. Likewise, a better
6074 implementation of EQUAL for simple bit vectors is now available.
6075 * fixed CEILING optimization for a divisor of form 2^k.
6076 * fixed bug 240 (emitting extra style warnings "using the lexical
6077 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
6078 by Antonio Martinez)
6079 * fixed SXHASH, giving different results for NIL depending on type
6080 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
6081 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
6082 variable. (found by Rolf Wester)
6083 * SBCL does not ignore type declarations for special
6084 variables. (reported by rif on c.l.l 2003-03-05)
6085 * some bug fixes in contrib/sb-aclrepl/
6086 * fixed some bugs revealed by Paul Dietz' test suite:
6087 ** a bug in the CONS type specifier, whereby the CAR and CDR
6088 types got intertwined, has been fixed;
6089 ** the type system is now able to reason about the interaction
6090 between INTEGER and RATIO types more completely;
6091 ** APPEND, [N]REVERSE and NRECONC check that those their
6092 arguments, which must be proper lists, are really so;
6093 ** An array specialized to be unable to hold elements has been
6094 implemented, as required -- yes, really -- by ANSI;
6095 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
6096 on malformed property lists;
6098 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
6099 * incompatible packaging change: in line with Unix convention,
6100 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
6101 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
6102 * REQUIRE and PROVIDE are now optionally capable of doing something
6103 useful. See the documentation string for REQUIRE.
6104 * infrastructure for a managed SBCL contrib system: contributed
6105 modules in this release include:
6106 ** the ASDF system definition facility;
6107 ** an interface to the BSD Sockets API;
6108 ** an ACL-like convenience interface to the repl;
6109 (thanks to Kevin Rosenberg)
6110 ** an implementation of ROTATE-BYTE, with efficient implementation
6112 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
6113 gives a closer approximation to the right answer than previously.
6114 (thanks to Raymond Toy)
6115 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
6116 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
6117 optional environment arguments, as required by ANSI.
6118 * fixed bugs in other functions taking environment objects, allowing
6119 calls with an explicit NIL environment argument to be compiled
6121 * fixed bug 228: primary return values from
6122 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
6123 COMPILE or FUNCTION.
6124 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
6125 :TYPE will no longer signal errors on innocuous objects.
6126 * fixed bug 231b: SETQ is better at respecting type declarations in
6127 the lexical environment.
6128 * fixed a bug in DEFCLASS: classes named by symbols with no or
6129 unprintable packages can now be defined.
6130 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
6131 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
6132 * fixed compiler failure related to checking types of functions.
6133 (reported by Robert E. Brown)
6134 * the compiler is now much more consistent in its error-checking
6135 treatment of bounding index arguments to sequence functions: in
6136 (SAFETY 3) code, errors will be signalled in almost all cases if
6137 invalid sequence bounding indices are passed to functions defined
6138 by ANSI to operate on sequences.
6139 * fixed a bug in the build procedure: documentation of SBCL-specific
6140 packages is now preserved and available in the final Lisp image.
6141 * lifted FDEFINITION lookup out of loops in the implementation of
6142 many list operations. (thanks to Robert E. Brown)
6143 * fixed a bug in the reader: the #n# reader macro now works for
6144 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
6145 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
6146 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
6147 E. Brown and Tony Martinez respectively)
6148 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
6149 SLOT-BOUNDP: in particular, it is now able to optimize them much
6150 better, and is now not vulnerable to having packages renamed.
6151 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
6152 always called when a slot is not present in an instance. (thanks
6154 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
6155 longer signal an error on unreading a character following EOF on
6156 the previous constituent stream. (thanks to Tony Martinez)
6157 * fixed some bugs revealed by Paul Dietz' test suite:
6158 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
6159 not just nonnegative fixnums;
6160 ** the logical bit-array operators such as BIT-AND now accept an
6161 explicit NIL for their "opt-arg" argument (to indicate a
6162 freshly-consed result bit-array);
6163 ** ELT now signals an error on an invalid sequence index in safe
6165 ** the type system is now cleverer about negations of numeric
6166 types, and consequently understands the BIGNUM and RATIO types
6168 ** the type system is now cleverer about the interaction between
6169 INTEGER and RATIO types: while bugs still remain, many more
6170 cases are accurately computed;
6171 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
6172 if it is in the last clause;
6173 ** CONSTANTLY now correctly returns a side-effect-free function in
6175 ** DECLARE is no longer treated as a special-operator; in
6176 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
6177 * incremented fasl file version number due to the change in the
6178 DEFSTRUCT-SLOT-DESCRIPTION structure.
6180 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
6181 * minor incompatible change: code processed by the "interpreter" or
6182 EVAL now has a compilation optimization policy of (DEBUG 2)
6183 (changed from (DEBUG 1)) to improve debuggability of interactive
6184 development, and to allow the use of the debug RETURN command in
6186 * an experimental implementation of the RETURN command for the
6187 debugger has been included. (thanks to Frederik Kuivinen)
6188 * fixed bug 62: constraints were not propagated into a loop.
6189 * fixed bug in embedded calls of SORT (reported and investigated by
6191 * fixed some bugs revealed by Paul Dietz' test suite:
6192 ** printing and reading of arrays with some dimensions having
6193 length 0 (thanks to Gerd Moellmann);
6194 ** BOA constructor with &AUX argument without a default value does
6195 not cause a type error;
6196 ** CONSTANTP now returns true for all self-evaluating objects.
6198 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
6199 * fixed bug 127: DEFSTRUCT now does not clobber old structure
6200 accessors that are related by inheritance, as specified in the
6201 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
6202 Valtteri Vuorikoski)
6203 * The compiler is now able to inline functions that were defined in
6204 a complex lexical environment (e.g. inside a MACROLET).
6205 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
6207 * Support for the upcoming FreeBSD-5.0 release has been included.
6208 (thanks to Dag-Erling Smorgrav)
6209 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
6210 effect when it is not in a toplevel context.
6211 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
6212 stand a better chance of being correct. (thanks to Gerd
6214 * fixed bug in COERCE, which now signals an error on coercing a
6215 rational to a bounded real type which excludes the expected
6217 * The compiler is now able to derive types more accurately from the
6218 COERCE and COMPILE functions.
6219 * fixed bug 223: functional binding is considered to be constant
6220 only for symbols in the CL package.
6221 * fixed bug 231: SETQ did not check the type of a variable being set
6222 (reported by Robert E. Brown)
6223 * A new optimization for MAKE-INSTANCE has been included, fixing
6224 various bugs (including relating to :ALLOCATION :CLASS slots and
6225 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
6227 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
6228 ** As required by ANSI, LOOP now disallows anonymous collection
6229 clauses such as COLLECT I in conjunction with aggregate boolean
6230 clauses such as THEREIS (= I 1);
6231 ** LOOP now signals an error when any variable is reused in the
6232 same loop (including the potentially useful construct analogous
6233 to WITH A = 1 WITH A = (1+ A);
6234 ** IT is only a special loop symbol within the first clause of a
6235 conditional loop clause;
6236 ** LOOP with a typed iteration variable over a hashtable now
6237 signals a type error iff it should.
6238 * fixed some other bugs revealed by Paul Dietz' test suite:
6239 ** FILE-STREAM now names the class previously known as FD-STREAM;
6240 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
6241 argument) no longer signals an error;
6242 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
6243 of the slot symbol, rather than using the current package
6244 ((:CONC-NAME "") continues to intern the slot's name in the
6246 * incremented fasl file version number, because of the incompatible
6247 change to the DEFSTRUCT-DESCRIPTION structure, and again because
6248 of the new implementation of DEFINE-COMPILER-MACRO.
6250 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
6251 * Support for building SBCL for MIPS platforms running in
6252 little-endian mode has now been checked in, and basic
6253 functionality on said platforms verified.
6254 * minor incompatible change: PCL now records the pathname of a file
6255 in which methods and the like are defined, rather than its
6257 * minor incompatible change: TRUENAME now considers the truename of
6258 a file naming a directory to be the pathname with :DIRECTORY
6259 component indicating that directory.
6260 * minor incompatible change: a NAMED clause in the extended form of
6261 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
6262 reason for the previous behaviour is unclear.
6263 * more systematization and improvement of CLOS and MOP conformance
6264 in PCL (thanks to Gerd Moellman and Pierre Mai):
6265 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
6267 ** DEFINE-METHOD-COMBINATION no longer signals an error for
6268 primary methods with no specializers;
6269 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
6271 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
6272 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
6273 FORWARD-REFERENCED-CLASSes; error reporting on
6274 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
6276 ** SXHASH on CLOS instances now uses a slot internal to the
6277 instance to return different numbers on distinct instances,
6278 while preserving the same return value through invocations of
6280 ** DEFMETHOD signals errors when methods with longer incongruent
6281 lambda lists are added to generic functions;
6282 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
6283 CLASS, as specified in AMOP;
6284 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
6285 on the order returned by the primary method for classes of
6286 class STANDARD-CLASS;
6287 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
6288 * fixed some bugs shown by Paul Dietz' test suite:
6289 ** DOLIST puts its body in TAGBODY;
6290 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
6292 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
6293 value producing form;
6294 ** if more variables are given to PROGV than values, extra
6295 variables are bound and made to have no value;
6296 ** NSUBSTITUTE on list arguments gets the right answer with
6298 ** ELT signals an error of type TYPE-ERROR when the index argument
6299 is not a valid sequence index;
6300 ** LOOP signals (at macroexpansion time) an error of type
6301 PROGRAM-ERROR when duplicate variable names are found;
6302 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
6303 ** FUNCALL of special-operators now cause an error of type
6305 ** PSETQ now works as required in the presence of side-effecting
6306 symbol-macro places;
6307 ** NCONC accepts any object as its last argument;
6308 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
6310 ** loop-for-as-package does not require a package to be explicitely
6312 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
6314 * fixed bug 166: compiler preserves "there is a way to go"
6315 invariant when deleting code.
6316 * fixed bug 172: macro lambda lists with required arguments after
6317 &REST arguments now cause an error to be signalled. (thanks to
6319 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
6320 bug. (thanks to Matthew Danish)
6321 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
6323 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
6324 arguments are lexically rebound. (thanks to Gerd Moellmann and
6326 * fixed bug 194: error messages are now more informative when there
6327 is no primary method applicable in a call to a generic
6328 function. (thanks to Gerd Moellmann)
6329 * fixed bug in command line argument checking (thanks to Julian
6331 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
6332 (thanks to Matthew Danish)
6333 * incremented fasl file version number, because of the
6334 SXHASH-related changes in the layout of CLOS data structures
6336 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
6337 * minor incompatible change: The runtime (the Unix executable named
6338 "sbcl") is now much pickier about the .core files it will load.
6339 Essentially it now requires .core files to descend from the same
6340 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
6341 as the runtime does. (The intent is to prevent the crashes which
6342 can occur, and which can even be reported as mysterious failures,
6343 when people patch the sources or change the build parameters
6344 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
6345 sbcl and .core files.)
6346 * fixed bug: VALUES-LIST is no longer optimized away.
6347 * fixed bug 142: The FFI conversion of C string values to Lisp
6348 string values no longer conses excessively. (thanks to Nathan
6349 Froyd porting Raymond Toy's fix to CMU CL)
6350 * began to systematize and improve MOP conformance in PCL (thanks to
6351 Nathan Froyd, Gerd Moellman and Pierre Mai):
6352 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
6354 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
6355 ** FINALIZE-INHERITANCE is now called on class finalization;
6356 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
6357 argument precedence order.
6358 * fixed bug 202: The compiler no longer fails on functions whose
6359 derived types contradict their declared type.
6360 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
6361 so it can be non-toplevel.
6362 * The fasl file version number has changed (because of the new
6363 implementation of DEFMACRO).
6364 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
6365 safe code, that any length requirement by their type-specifier
6366 argument is valid. The exceptions to this are described in bug
6368 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
6369 functions now check the types of their inputs as required by ANSI.
6370 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
6371 introduced symbol is DECLAREd to be SPECIAL.
6372 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
6373 * fixed bug: :COUNT argument to sequence functions may be negative
6374 * fixed bug: body of DO-SYMBOLS may contain declarations
6375 * fixed bug: PUSHNEW now evaluates its arguments from left to right
6376 (reported by Paul F. Dietz, fixed by Gerd Moellman)
6377 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
6378 symbol macro only once
6379 * fixed printing of call frame when argument list is unavailable
6380 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
6381 * compiler no longer signals WARNING on unknown keyword
6384 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
6385 * A beta-quality port to the mips architecture running Linux,
6386 based on the old CMUCL backend, has been made. It has been tested
6387 on a big-endian kernel, and works sufficiently well to be able to
6388 rebuild itself; it has not been tested in little-endian mode.
6389 * fixed an inconsistency between gencgc.c and purify.c which made
6390 dumping/loading .core files unreliable
6391 * fixed bug 120a: The compiler now deals correctly with IFs where
6392 the consequent is the same as the alternative, instead of
6393 misderiving the return type. (thanks to Alexey Dejneka)
6394 * fixed bug 113: Logical pathnames are now dumpable (the logical
6395 host is resolved at load-time, throwing an error if it is not
6397 * fixed bug 174: FORMAT's error message is slightly clearer when a
6398 non-printing character is used in a format directive.
6399 * fixed several bugs in compiler checking of type declarations, i.e.
6400 violations of the Python "declarations are assertions" principle
6401 (thanks to Alexey Dejneka)
6402 * fixed several bugs in PCL's error checking (thanks to Gerd
6404 * fixed bug: printing of FILE-ERROR (thanks to Antonio
6406 * fixed bug in compilation of functions as first class values
6407 (thanks to Antonio Martinez-Shotton)
6408 * The compiler's handling TYPE-ERRORs which it can prove will
6409 inevitably happen at runtime has been cleaned up and corrected
6410 in several ways. (thanks to Alexey Dejneka)
6411 * improved argument type checking for various basic arithmetic
6412 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
6413 lavished on them in the past that they can be compiled in many
6414 ways in different special cases
6415 * fixed bug 181: compiler checks validity of user supplied type
6417 * cleaned up code flushing in optimization: Function calls which
6418 should signal errors for safety purposes (e.g. which ANSI says
6419 should signal errors when their arguments are of incorrect type)
6420 are no longer optimized away.
6421 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
6422 * incremented fasl file version number, because changes in the
6423 implementation of sequence functions like COERCE caused
6424 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
6425 in old inline expansions) to become undefined. (Actually these
6426 changes were later undone, so we might very well be binary
6427 compatible with 0.7.7 after all, but leaving the version number
6428 incremented seemed like the simplest and most conservative
6431 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
6432 * An alpha-quality port to the parisc architecture running Linux,
6433 based on the old CMUCL backend, has been made. This, even more so
6434 than the other backends, should be considered still a work in
6435 progress; known problems include that the Linux kernel in 64-bit
6436 mode does not propagate the correct sigcontext structure to
6437 userspace, and consequently SBCL on a parisc64 kernel will not
6439 * fixed bug 189: The compiler now respects NOTINLINE declarations for
6440 functions declared in FLET and LABELS. (I.e. "LET conversion" is
6441 suppressed.) Also now that the compiler is looking at declarations
6442 in the environment, it checks optimization declarations as well,
6443 and suppresses inlining when (> DEBUG SPEED).
6444 * More fixes have been made to treatment of floating point exception
6445 treatment and other Unix signals. In particular, floating point
6446 exceptions no longer cause Bus errors on the SPARC/Linux platform.
6447 * The detection and handling of control stack exhaustion (infinite
6448 or very deeply nested recursion) has changed. Stack exhaustion
6449 detection is now done by write-protecting pages at the OS level
6450 and applies at all optimization settings; when found, a
6451 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
6452 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
6453 be caught using IGNORE-ERRORS.
6454 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
6455 correctly when transforming recursive LABELS functions to LETs.
6456 (thanks to Alexey Dejneka)
6457 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
6458 that are names of constants or global variables.
6459 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
6460 alien routines with docstrings.
6461 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
6462 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
6464 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
6465 (thanks to Eric Marsden)
6466 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
6467 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
6468 * Bug fix: The SPARC backend can now compile functions involving
6469 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
6470 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
6471 to a functions expecting a PATHNAME-DESIGNATOR.
6472 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
6473 lambda lists. (thanks to Alexey Dejneka)
6474 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
6475 functions so that EXPORTing the name of the class doesn't cause
6476 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
6477 to Antonio Martinez for reporting this)
6478 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
6479 constant-folded without failing an assertion. (thanks to Einar
6480 Floystad Dorum for reporting this)
6481 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
6482 types are now dealt with more correctly by the compiler.
6483 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
6484 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
6485 behaviour analogous to RENAME-FILE. This puts its behaviour more
6486 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
6488 * The fasl file version number has changed again. (because of the
6489 bug fix involving the names of PCL MAKE-INSTANCE functions)
6491 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
6492 * bug fix: Floating point exceptions are treated much more
6493 consistently on the x86/Linux and PPC/Linux platforms.
6494 * Array initialization with :INITIAL-ELEMENT is now much faster for
6495 cases when the compiler cannot open code the array creation, but
6496 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
6497 array accesses have also seen a speed increase.
6498 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
6499 specified. (This was at the root of some bad interactions between
6500 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
6502 * bug fix: Internal error arguments for undefined functions are now
6503 computed correctly on the PPC/Linux platform.
6504 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
6505 Raymond Toy's patch for CMU CL)
6506 * Support for the Solaris 9 operating environment has been included
6507 (thanks to Daniel Merritt)
6508 * A very ugly but hopefully complete draft of the missing FFI chapter
6509 of the manual has been created by reformatting the corresponding
6510 CMU CL manual chapter into (currently very ugly and incoherent)
6511 DocBook and bringing it up to date for SBCL behavior. Thus, the
6512 manual is now essentially complete, at least by my extreme
6513 once-and-only-once standards, whereby it's acceptable to refer to
6514 the doc strings of SB-EXT functions as the primary documentation.
6515 * The fasl file version number has changed again, due to cleanup of
6516 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
6517 is no longer a static symbol.)
6519 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
6520 * SBCL now builds with OpenMCL (version 0.12) as the
6521 cross-compilation host; also, more progress has been made toward
6522 bootstrapping under CLISP.
6523 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
6525 * bug 158 fixed: The compiler can now deal with integer loop
6526 increments different from 1; fixing this turned out also to fix
6528 * bug 169 fixed: no more bogus warnings about using lexical bindings
6529 despite the presence of perfectly good SPECIAL declarations (thanks
6530 to David Lichteblau)
6531 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
6532 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
6533 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
6535 * bug 180 fixed: Method combination specifications no longer ignore
6536 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
6537 * bug fix: Structure type predicate functions now check their argument
6538 count as they should.
6539 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
6540 correctly. (thanks to Pierre Mai)
6541 * minor incompatible change: The --noprogrammer option is deprecated
6542 in favor of the new --disable-debugger option, which is very similar.
6543 (The major difference is that it takes effect at a slightly different
6544 time at startup, causing handling of errors in --sysinit and
6545 --userinit files will be affected differently.) The
6546 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
6547 been added to allow this functionality to be controlled from ordinary
6548 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
6549 maintainers, who might want to run non-interactive scripts to
6550 build SBCL cores which will later be used interactively.)
6551 * minor incompatible change: The LOAD function no longer, when given
6552 a wild pathname to load, loads all files matching that pathname.
6553 Instead, an error of type FILE-ERROR is signalled.
6555 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
6556 * bug 147 fixed: The compiler preserves its block link/count
6557 invariants more correctly now so that it doesn't crash. (thanks
6559 * Dynamic loading of object files in OpenBSD is now supported. (thanks
6561 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
6562 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
6563 no-value-for-this-character as NIL (as specified by ANSI).
6564 * HOST-NAMESTRING on physical pathnames now returns a string that is
6565 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
6566 (thanks to Christophe Rhodes)
6567 * The Alpha port handles icache flushing more correctly. (thanks to
6569 * More progress has been made toward bootstrapping under CLISP. (thanks
6570 to Christophe Rhodes)
6571 * The fasl file format has changed again, because dynamic loading
6572 on OpenBSD (which has non-ELF object files) motivated some cleanups
6573 in the way that foreign symbols are transformed and passed around.
6574 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
6575 is no longer treated as whitespace by the reader, but instead as
6576 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
6577 |A
\x7fB|, instead of A as it used to.
6579 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
6580 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
6581 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
6582 * SBCL now runs on the PPC archtiecture under Linux. It actually did
6583 this as of 0.7.1.45, but was left out of the previous news section
6584 (thanks to Dan Barlow)
6585 * SBCL now runs on the Solaris operating system on SPARC architectures
6586 (thanks to Christophe Rhodes's port of the CMUCL runtime)
6587 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
6588 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
6589 * SPARC backend cleanups, allowing builds of cores optimized for V8
6590 and V9 SPARCS, and also emission of code targeted to a particular
6591 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
6593 * SBCL is closer to bootstrapping under CLISP, thanks to various
6594 fixes by Christophe Rhodes.
6595 * The fasl file format has changed again, to allow the compiler's
6596 INFO database to support symbol macros.
6597 * The user manual (in doc/) is formatted into HTML more nicely.
6598 (thanks to coreythomas)
6599 * The system is smarter about SUBTYPEP relationships, especially
6600 those involving NOT types (including types such as ATOM which are
6601 represented internally using NOT types). Thus SUBTYPEP is less
6602 likely to return (VALUES NIL NIL) in general, and in particular
6603 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
6605 * The fasl file format has changed again, because the internal
6606 representation of types now includes a new slot to support the new
6607 SUBTYPEP-of-NOT-types logic.
6608 * (not a change in the main branch of SBCL, but a related prototype
6609 which can hopefully be merged into the main branch of SBCL in the
6610 future:) Brian Spilsbury has produced a Unicode-enabled variant of
6611 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
6612 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
6613 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
6614 dispatch macro character combinations. (thanks to Alexey Dejneka)
6615 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
6616 that superficially look like logical namestrings correctly.
6617 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
6619 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
6620 default supplied-p) for &optional and &key arguments. (thanks to
6623 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
6624 * incompatible change: The compiler is now less aggressive about
6625 tail call optimization, doing it only when (> SPACE DEBUG) or
6626 (> SPEED DEBUG). (This is an incompatible change because there are
6627 programs which relied on the old CMU-CL-style behavior to optimize
6628 away their unbounded recursion which will now die of stack overflow.)
6629 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
6630 for non-GENCGC systems has been increased to 20M (since that
6631 seems much closer to the likely performance optimum for modern
6632 systems than the old 4M value was)
6633 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
6634 and *DEBUG-PRINT-LEVEL*
6635 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
6636 of CMU CL's support for SPARC, and various endianness and other
6637 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
6638 * new syntactic sugar for the Unix command line: --load foo.bar is now
6639 an alternate notation for --eval '(load "foo.bar")'.
6641 ** The system now detects stack overflow and handles it gracefully,
6642 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
6643 optimization settings. (This is a good thing in general, and
6644 its introduction in this version should be particularly timely
6645 for anyone whose code fails because of suppression of tail
6647 ** The system now hunts for the C variable "environ" in a more
6648 devious way, to avoid segfaults when the C library version differs
6649 between compile time and run time. (thanks to Christophe Rhodes)
6650 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
6651 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
6652 ** The compiler no longer issues bogus style warnings for undefined
6653 classes in the same source file as the DEFCLASSes which defined
6654 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
6656 ** fixes in CONDITION class precedence list for undefined function
6657 errors (thanks to Alexei Dejneka)
6658 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
6659 correctly. (thanks to Dan Barlow)
6660 ** portability fixes aiming at bootstrapping under CLISP (thanks
6661 to Dave McDonald and Christophe Rhodes)
6662 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
6663 ** fixes in type translation and and type inference (thanks to
6665 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
6666 ** various fixes in the new ports (thanks to Dan Barlow)
6667 * several changes related to debugging:
6668 ** suppression of tail recursion, as noted above
6669 ** stack overflow detection, as noted above
6670 ** The default implementation of TRACE has changed. :ENCAPSULATE T
6671 is now the default. (For some time encapsulation has been more
6672 reliable than the breakpoint-based :ENCAPSULATE NIL
6673 implementation, at least on X86 systems; and I just noticed that
6674 encapsulation also seems closer to the spirit of the ANSI
6677 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
6679 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
6680 up properly again. (There was a packaging bug in 0.7.0 which
6681 left their definitions in SB-SYS::LOAD-FOREIGN and
6682 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
6683 vital for most things which interface to C-level interfaces,
6684 like extensions working with sockets or databases or
6685 Perl-compatible regexes or whatever, and the need to fix
6686 this bug is the main reason that 0.7.1 was released so
6688 ** DEFGENERIC is now choosier about the methods it redefines, so that
6689 reLOADing a previously-LOADed file containing DEFGENERICs does
6690 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
6691 cycle now works as it should. (thanks to Alexey Dejneka)
6692 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
6693 fixed by Christophe Rhodes. (He actually submitted this patch
6694 months ago, and I delayed until after 0.7.0.)
6695 ** Bug 111 (internal compiler confusion about runtime checks on
6696 FUNCTION types) was fixed by Alexey Dejneka.
6697 * Some internal cleanups (getting rid of variables which aren't
6698 needed now that the byte interpreter is gone) caused the fasl
6699 file format number to change again.
6701 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
6702 * major incompatible change: The default fasl file extension, i.e. the
6703 default extension for files produced by COMPILE-FILE, has changed
6704 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
6706 ** There are many changes in the implementation of the compiler.
6707 SBCL is now essentially a compiler-only implementation of ANSI
6708 Common Lisp. EVAL still "interprets" a few special cases, but
6709 almost all the interesting cases are handled by creating
6710 a LAMBDA expression, calling COMPILE on it, then calling
6711 FUNCALL on the result.
6712 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
6713 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
6714 Since the code is newer, there might still be some new bugs
6715 (though not as many as before Martin Atzmueller's fixes:-). But
6716 the new code is substantially simpler and clearer, and hopefully
6717 any remaining bugs will be simpler, less fundamental, and more
6718 fixable then the bugs in the old code.
6719 ** The revised compiler is still a little unsteady on its feet.
6721 *** The debugging information it produces (particularly the names
6722 of FUNCTION objects) is sometimes much less useful than what
6723 the old compiler produced.
6724 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
6725 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
6726 within a MACROLET) has been temporarily weakened.
6727 ** There are new compiler optimizations for various functions:
6728 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
6729 FIND-IF-NOT, POSITION-IF-NOT, and FILL
6730 *** the math functions TRUNCATE, FLOOR, and CEILING
6731 *** the function-of-all-trades COERCE
6732 Mostly these should be transparent, but there's one
6733 potentially-annoying problem (bug 117): when the compiler
6734 inline-expands a function and does type analysis on the result,
6735 it can create control paths which have type mismatches, and
6736 when it can't prove that those control paths aren't taken,
6737 it will issue WARNINGs about the type mismatches. This is
6738 a particular problem in practice for the new sequence functions.
6739 It's not clear how this should be fixed, and for now, a
6740 workaround is given in the entry for 117 in the BUGS file.
6741 ** (Because of the interaction between the two previous items --
6742 occasional inlining problems and new inline expansions -- some
6743 of the new sequence function optimizations won't really kick in
6744 completely until debugging information, and then inlining, are
6745 straightened out in some future version.)
6746 * minor incompatible changes:
6747 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
6748 DIRECTORY no longer implicitly promotes NIL slots of its
6749 pathname argument to :WILD. In particular, when you ask for the
6750 contents of a directory (which you used to be able to do without
6751 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
6752 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
6753 ** changes in behavior that ANSI explicitly defines to be
6754 implementation dependent:
6755 *** The new compiler-only implementation still conforms with ANSI,
6756 but acts a little different than before. Besides the obvious
6757 changes in performance tradeoffs (that the cost per form passed
6758 to EVAL has gone up, and the cost per form executed by EVAL
6759 has gone down), the behavior of the system changes a little
6760 because there are no longer any interpreted function objects.
6761 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
6762 e.g. doing COMPILE on the output of interactive DEFUN is
6764 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
6766 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
6767 has changed from (:CL) to NIL.
6768 *** The CHAR-NAME of unprintable ASCII characters which, unlike
6769 e.g. #\Newline and #\Tab, don't have names specified in the
6770 ANSI Common Lisp standard, is now based on their ASCII symbolic
6771 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
6772 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
6773 are no longer used for output.
6774 ** changes in internal implementation constants:
6775 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
6776 4 million. (If your application spends a lot of time GCing and
6777 you have a lot of RAM, you might want to experiment with
6778 increasing it even more.)
6779 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
6780 However, almost all old code should still continue to work without
6781 immediate update, as SB-C-CALL is now a (deprecated) nickname
6783 ** Old operator names in the style DEF-FOO are now deprecated in
6784 favor of new corresponding names DEFINE-FOO, for consistency with
6785 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
6786 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
6787 internal symbols, but a few supported extensions like
6788 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
6789 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
6790 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
6791 etc. as you get deeper into recursive calls to the debugger
6792 command loop, instead of the old "5]", "5]]", "5]]]"
6793 sequence. (I was motivated to do this when squabbles between
6794 ILISP and SBCL left me very deeply nested in the debugger. In the
6795 short term, this change will probably provoke more ILISP/SBCL
6796 squabbles, but hopefully it will be an improvement in the long run.)
6797 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
6798 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
6799 function, since declaiming return types involving aliens is
6800 (1) annoyingly messy to do by hand and (2) vital to efficient
6801 compilation of code which calls such functions.
6802 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
6803 longer reexported by the SB-EXT package. They're solely useful
6804 for alien code, so it seems more logical that you should get
6805 them from the SB-ALIEN package, not in SB-EXT.
6806 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
6807 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
6808 features. Instead, the code that they used to control is always
6809 built into the system.
6810 * many other bug fixes
6811 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
6812 advantage of the new EVAL-WHEN stuff and to clean them up in
6813 general, and they are now more ANSI-compliant in a number of
6814 ways. Martin Atzmueller is responsible for a lot of this.
6815 ** Besides the cleanups discussed above, Martin Atzmueller fixed
6817 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
6818 *** correct ERROR type for various file operations
6819 *** some fixes for Lisp streams
6820 *** DEFMETHOD syntax checking
6821 *** changing old weird representation of debug information as
6822 strings (which, among their other deficiencies, don't transform
6823 correctly when you rename packages, and don't change their
6824 print representation when you change things like *PACKAGE*
6825 and *PRINT-LENGTH*) to symbols and lists of symbols
6826 He also made several improvements and fixed several bugs in DESCRIBE.
6827 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6829 *** misbehavior of WRITE-STRING/WRITE-LINE
6830 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6831 and several other LOOP problems as well
6832 *** DIRECTORY when similar filenames are present
6833 *** DEFGENERIC with :METHOD options
6834 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6835 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6836 *** argument ordering in FIND with :TEST option
6837 *** mishandled package designator argument in APROPOS-LIST
6838 *** various problems in the backquote readmacro
6839 *** a bug in APROPOS
6840 *** probably some others that I'm not describing very well here,
6841 since the CVS log documents them by reference to sbcl-devel
6842 messages, and the SourceForge archives aren't working well.:-(
6843 ** Dan Barlow improved the Alpha port (and is making progress on the
6844 PPC port, for those of you who think different).
6845 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6846 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6847 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6848 continues to work on the SPARC port (for those of you in a position
6849 to look down upon our little PC-compatible boxes from a great height).
6850 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6851 and uses that copy, rather than the current dynamic value, when
6852 it's trying to decide whether to truncate output. Thus e.g.
6853 (let ((*print-lines* 50))
6854 (pprint-logical-block (stream nil)
6856 (let ((*print-lines* 8))
6857 (print (aref possiblybigthings i) stream)))))
6858 should now truncate the logical block only at 50 lines, instead of
6859 often truncating it at 8 lines, as it did before.
6860 * The doc/cmucl/ directory, containing old CMU CL documentation
6861 from the time of the fork, is no longer part of the base system.
6862 SourceForge has shut down its anonymous FTP service, and with it
6863 my original plan for distributing the old CMU CL documentation
6864 there. For now, if you need these files you can download an old
6865 SBCL source release and extract them from it.
6866 * The fasl file version number changed again, for dozens of reasons,
6867 some of which are apparent above.
6869 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6870 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6871 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6872 patch, so that DISASSEMBLE output is much nicer.
6873 * The code in the SB-PROFILE package now seems reasonably stable.
6874 I still haven't decided what the final interface should look like
6875 (I'd like PROFILE to interact cleanly with TRACE, since both
6876 facilities use function encapsulation) but if you have a need
6877 for profiling now, you can probably use it successfully with
6878 the current CMU-CL-style interface.
6879 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6880 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6881 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6882 link now returns the dangling link itself, and for similar
6883 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6884 link itself. (In these cases the old code signalled an error and
6885 looped endlessly, respectively.) Thus, DIRECTORY now works even
6886 in the presence of dangling and cyclic symbolic links.
6887 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6888 is now a supported extension again, since the consensus on
6889 sbcl-devel was that it can be useful for ordinary development
6890 work, not just for debugging SBCL itself.
6891 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6892 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6893 that currently-defined functions might be redefined later with
6894 different return types.
6895 * Hash tables can be printed readably, as inspired by CMU CL code
6896 of Eric Marsden and SBCL code of Martin Atzmueller.
6897 * better error handling in CLOS method combination, thanks to
6898 Martin Atzmueller porting Pierre Mai's CMU CL patches
6899 * more overflow fixes for >16Mbyte I/O buffers
6900 * A bug in READ has been fixed, so that now a single Ctrl-D
6901 character suffices to cause end-of-file on character streams.
6902 In particular, now you only need one Ctrl-D at the command
6903 line (not two) to exit SBCL.
6904 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6906 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6907 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6908 does the right thing.
6909 * The implementation of some type tests, especially for CONDITION
6910 types, is now tidier and maybe faster, due to CMU CL code
6911 originally by Douglas Crosher, ported by Martin Atzmueller.
6912 * Some math functions have been fixed, and there are new
6913 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6914 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6915 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6916 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6917 likely to be built into sbcl-0.7.0.)
6918 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6919 CL, ported to SBCL by Martin Atzmueller)
6920 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6921 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6922 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6923 * There's a new slam.sh hack to shorten the edit/compile/debug
6924 cycle for low-level changes to SBCL itself, and a new
6925 :SB-AFTER-XC-CORE target feature to control the generation of
6926 the after-xc.core file needed by slam.sh.
6927 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6928 COMPILE-FILE is no longer supported, so that now every function
6929 gets an entry point, so that block compilation looks a little
6930 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6931 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6932 returns the number of bytes consed since the system started,
6933 rather than the number consed since the first time the function
6934 was called. (The new definition parallels ANSI functions like
6935 CL:GET-INTERNAL-RUN-TIME.)
6936 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6937 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6938 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6939 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6940 * Fasl file version numbers are now independent of the target CPU,
6941 since historically most system changes which required version
6942 number changes have affected all CPUs equally. Similarly,
6943 the byte fasl file version is now equal to the ordinary
6946 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6947 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6948 is no longer recognized. I apologize for this, because it was
6949 listed in SB-EXT as a supported extension, but I found that
6950 its existing behavior was poorly specified, as well as incorrectly
6951 specified, and it looked like too much of a mess to straighten it
6952 out. I have enough on my hands trying to get ANSI stuff to work..
6953 * many patches ported from CMU CL by Martin Atzmueller, with
6954 half a dozen bug fixes in pretty-printing and the debugger, and
6955 half a dozen others elsewhere
6956 * fixed bug 13: Floating point infinities are now supported again.
6957 They might still be a little bit flaky, but thanks to bug reports
6958 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6959 as flaky as they were.
6960 * The --noprogrammer command line option is now supported. (Its
6961 behavior is slightly different in detail from what the old man
6962 page claimed it would do, but it's still appropriate under the
6963 same circumstances that the man page talks about.)
6964 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6965 are now supported, and enabled by default. Thus, the compiler can
6966 handle many floating point and complex operations much less
6967 inefficiently. (Thus e.g. you can implement a complex FFT
6969 * The compiler now detects type mismatches between DECLAIM FTYPE
6970 and DEFUN better, and implements CHECK-TYPE more correctly, and
6971 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6972 thanks to patches from Martin Atzmueller.
6973 * various fixes to make the cross-compiler more portable to
6974 ANSI-conforming-but-different cross-compilation hosts (notably
6975 Lispworks for Windows, following bug reports from Arthur Lemmens)
6976 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6977 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6978 fixed thanks to Pierre Mai's CMU CL patches.
6979 * fixes to keep the system from overflowing internal counters when
6980 it tries to use i/o buffers larger than 16M bytes
6981 * fixed bug 45a: Various internal functions required to support
6982 complex special functions have been merged from CMU CL sources.
6983 (When I was first setting up SBCL, I misunderstood a compile-time
6984 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6985 * improved support for type intersection and union, fixing bug 12
6986 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6987 more obscure bugs as well
6988 * some steps toward byte-compiling non-performance-critical
6989 parts of the system, courtesy of patches from Martin Atzmueller
6990 * Christophe Rhodes has made some debian packages of sbcl at
6991 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6992 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6993 stable, but are nonetheless usable. When he's ready, I'd be happy
6994 to add them to the SourceForge "File Releases" section. (And if
6995 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6996 * new fasl file format version number (because of changes in
6997 internal representation of (OR ..) types to accommodate the new
6998 support for (AND ..) types, among other things)
7000 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
7001 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
7003 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
7005 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
7006 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
7007 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
7008 * DESCRIBE now works on structure objects again.
7009 * Most function call argument type mismatches are now handled as
7010 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
7011 know whether the function will be redefined before the call is
7012 executed. (The compiler could flag local calls with full WARNINGs,
7013 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
7014 it doesn't keep track of enough information to know whether calls
7015 are local in this sense.)
7016 * Compiler output is now more verbose, with messages truncated
7017 later than before. (There should be some supported way for users
7018 to override the default verbosity, but I haven't decided how to
7019 provide it yet, so this behavior is still controlled by the internal
7020 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
7021 src/compiler/ir1util.lisp.)
7022 * Fasl file format version numbers have increased again, because
7023 support for the Gray streams extension changes the layout of the
7024 system's STREAM objects.
7025 * The Gray subclassable streams extension now works, thanks to a
7026 patch from Martin Atzmueller.
7027 * The full LOAD-FOREIGN extension (not just the primitive
7028 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
7029 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
7030 but like most other programs, it defaults to copying the Unix
7031 environment from the original process instead of starting the
7032 new process in an empty environment.
7033 * Extensions which manipulate the Unix environment now support
7034 an :ENVIRONMENT keyword option which doesn't smash case or
7035 do other bad things. The CMU-CL-style :ENV option is retained
7036 for porting convenience.
7037 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
7038 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
7040 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
7042 * A patch from Martin Atzmueller seems to have solved the SIGINT
7043 problem, and as far as we know, signal-handling now works cleanly.
7044 (If you find any new bugs, please report them!)
7045 * The system no longer defaults Lisp source file names to types
7046 ".l", ".cl", or ".lsp", but only to ".lisp".
7047 * The compiler no longer uses special default file extensions for
7048 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
7049 seems to expect a single default extension for all compiled code,
7050 and there's no compelling reason to try to stretch the standard
7051 to allow two different extensions.) Instead, byte-compiled files
7052 default to the same extension as native-compiled files.
7053 * Fasl file format version numbers have increased again, because
7054 a rearrangement of internal implementation packages made some
7055 dumped symbols in old fasl files unreadable in new cores.
7056 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
7057 many fewer weird special cases.
7058 * Bug #17 (differing COMPILE-FILE behavior between logical and
7059 physical pathnames) has been fixed, and some related misbehavior too,
7060 thanks to a patch from Martin Atzmueller.
7061 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
7062 by Tim Moore, ported to SBCL by Martin Atzmueller.
7063 * Martin Atzmueller fixed several filesystem-related problems,
7064 including bug #36, in part by porting CMU CL patches, which were
7065 written in part by Paul Werkowski.
7066 * More compiler warnings in src/runtime/ are gone, thanks to
7067 more patches from Martin Atzmueller.
7068 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
7071 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
7073 * DESCRIBE now works on CONDITION objects.
7074 * The debugger now handles errors which arise when trying to print
7075 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
7077 * The build system now uses an additional file, customize-target-features.lisp,
7078 to allow local modifications to the target *FEATURES* list. (The point of
7079 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
7080 debugging features enabled, without having to worry about propagating it
7081 into everyone's system when I do a "cvs update".) When no
7082 customize-target-features.lisp file exists, the target *FEATURES* list
7083 should be constructed the same way as before.
7084 * fixed bugs in DEFCONSTANT ANSI-compatibility:
7085 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
7086 warn about behavior which is undefined under the ANSI spec. Note: This
7087 is specified by ANSI, but it's not very popular with programmers.
7088 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
7089 macro in the SBCL sources for an example of a workaround which you
7090 might use to make portable ANSI-standard code which does what you want.
7091 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
7092 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
7093 when it's used as a non-toplevel form. (This is required in order
7094 to implement the DEFCONSTANT-EQX macro.)
7095 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
7096 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
7097 funny things, due to bugs in the implementation of EVAL-WHEN
7098 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
7099 non-toplevel DEFCONSTANTs are uncommon.)
7100 * The core file version number and fasl file version number have been
7101 incremented, because the old noncompliant DEFCONSTANT behavior involved
7102 calling functions which no longer exist, and because I also took the
7103 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
7104 * fixed bug 1 (error handling before read-eval-print loop starts), and
7105 redid debugger restarts and related debugger commands somewhat while
7107 ** The QUIT debugger command is gone, since it did something
7108 rather different than the SB-EXT:QUIT command, and since it never
7109 worked properly outside the main toplevel read/eval/print loop.
7110 Invoking the new TOPLEVEL restart provides the same functionality.
7111 ** The GO debugger command is also gone, since you can just invoke
7112 the CONTINUE restart directly instead.
7113 ** The TOP debugger command is also gone, since it's redundant with the
7114 FRAME 0 command, and since it interfered with abbreviations for the
7116 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
7118 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
7119 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
7120 some porting work by Martin Atzmueller)
7121 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
7122 with a boatload of patches which he ported to SBCL. Now that those
7124 ** The system tries to make sure that its low-priority messages
7125 are prefixed by semicolons, to help people who like to use
7126 syntax highlighting in their ILISP buffer. (This patch
7127 was originally due to Raymond Toy.)
7128 ** The system now optimizes INTEGER-LENGTH better, thanks to more
7129 patches originally written by Raymond Toy.
7130 ** The compiler understands coercion between single-value and
7131 multiple-VALUES type expressions better, getting rid of some very
7132 weird behavior, thanks to patches originally by Robert MacLachlan
7133 and Douglas Crosher.
7134 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
7135 lambda lists, thanks to a patch originally by Pierre Mai.
7136 ** The system no longer bogusly warns about "abbreviated type
7138 ** The compiler gets less confused by inlining and RETURN-FROM,
7139 thanks to some patches originally by Tim Moore.
7140 ** The system no longer hangs when dumping circular lists to fasl
7141 files, thanks to a patch originally from Douglas Crosher.
7142 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
7143 undefined function error.
7144 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
7145 in structure slot initforms) for now, documented workaround instead:-|
7146 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
7147 * fixed bug 5: added stubs for various Gray stream functions called
7148 in the not-a-CL:STREAM case, so that even when Gray streams aren't
7149 installed, at least appropriate type errors are generated
7150 * fixed bug 8: better reporting of various PROGRAM-ERRORs
7151 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
7152 consistently in DEFMETHOD forms.
7153 * removed bug 21 from BUGS, since Martin Atzmueller points out that
7154 it doesn't seem to affect SBCL after all
7155 * The C runtime system now builds with better optimization and many
7156 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
7158 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
7160 * The system is now under CVS at SourceForge (instead of the
7161 CVS repository on my home machine).
7162 * The new signal handling code has been tweaked to treat register
7163 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
7164 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
7165 downstream, e.g. in debug-int.lisp, has implicit dependencies
7166 on the unsignedness of integer representation of machine words,
7167 and that caused the system to bomb out with infinite regress
7168 when trying to recover from type errors involving signed values,
7169 e.g. (BUTLAST '(1 2 3) -1).)
7170 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
7171 (This was one of the bugs Peter Van Eynde reported back in July.)
7172 * The system now uses code inspired by Colin Walters' O(N)
7173 implementation of MAP (from the cmucl-imp@cons.org mailing
7174 list, 2 September 2000) when it can't use a DEFTRANSFORM to
7175 inline the MAP operation, and there is more than one
7176 sequence argument to the MAP call (so that it can't just
7177 do ETYPECASE once and for all based on the type of the
7178 single sequence argument). (The old non-inline implementation
7179 of the general M-argument sequence-of-length-N case required
7180 O(M*N*N) time when any of the sequence arguments were LISTs.)
7181 * The QUIT :UNIX-CODE keyword argument has been renamed to
7182 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
7183 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
7185 * Raymond Wiker's patches to port dynamic loading from Linux to
7186 FreeBSD have been added.
7187 * The BUGS file is now more nearly up to date, thanks in large part
7188 to Martin Atzmueller's review of it.
7189 * The debugger now flushes standard output streams before it begins
7190 its output ("debugger invoked" and so forth).
7191 * The core version number and fasl file version number have both
7192 been incremented, because of incompatible changes in the layout
7194 * FINISH-OUTPUT is now called more consistently on QUIT. (It
7195 used to not be called for a saved Lisp image.)
7196 * Martin Atzmueller's version of a patch to fix a compiler crash,
7197 as posted on sbcl-devel 13 September 2000, has been installed.
7198 * Instead of installing Martin Atzmueller's patch for the
7199 compiler transform for SUBSEQ, I deleted the compiler transform,
7200 and transforms for some similar consing operations.
7201 * A bug in signal handling which kept TRACE from working on OpenBSD
7203 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
7204 away by constant folding
7205 * The system now defines its address space constants in one place
7206 (in the Lisp sources), and propagates them automatically elsewhere
7207 (through GENESIS and the sbcl.h file). Therefore, patching the
7208 address map is less unnecessarily tedious and error-prone. The
7209 Lisp names of address space constants have also been systematized.
7210 * CVS tags like dollar-Header-dollar have been removed from
7211 the sources, because they have never saved me trouble and
7212 they've been source of trouble working with patches and other
7213 diff-related operations.
7214 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
7215 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
7217 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
7219 * The system has been ported to OpenBSD.
7220 * The system now compiles with a simple "sh make.sh" on the systems
7221 that it's supported on. I.e., now you no longer need to tweak
7222 text in the target-features.lisp-expr and symlinks in src/runtime/
7223 by hand, the make.sh takes care of it for you.
7224 * The system is no longer so grossly inefficient when compiling code
7225 involving vectors implemented as general (not simple) vectors (VECTOR T),
7226 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
7227 which dares to use the various sequence functions on non-simple
7228 vectors, takes less of a performance hit.
7229 * There is now a primitive type predicate VECTOR-T-P
7230 to test for the (VECTOR T) type, so that e.g.
7231 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
7232 can now be compiled with some semblance of efficiency. (The old code
7233 turned the type declaration into a full call to %TYPEP at runtime!)
7234 * AREF on (VECTOR T) is still not fast, since it's still compiled
7235 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
7236 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
7237 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
7238 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
7239 without making full calls to SUBTYPEP at runtime.
7240 (Some analogous efficiency issues for non-simple vectors specialized to
7241 element types other than T, or for non-simple multidimensional arrays,
7242 have not been addressed. They could almost certainly be handled the
7243 same way if anyone is motivated to do so.)
7244 * The changes in array handling break binary compatibility, so
7245 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
7246 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
7247 instead of (VALUES T T).
7248 * By following the instructions that Dan Barlow posted to sbcl-devel
7249 on 2 July 2000, I was able to enable primitive dynamic object
7250 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
7251 functionality is not implemented (since it calls ld to resolve
7252 library references automatically, requiring RUN-PROGRAM for its
7253 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
7254 try to resolve library references) is now supported.
7255 * The system now flushes the standard output streams when it terminates,
7256 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
7257 them at several other probably-convenient times, e.g. in each pass of
7258 the toplevel read-eval-print loop, and after evaluating a form given
7259 as an "--eval" command-line option. (These changes were motivated by a
7260 discussion of stream flushing issues on cmucl-imp in August 2000.)
7261 * The source transform for TYPEP of array types no longer assumes
7262 that an array whose element type is a not-yet-defined type
7263 is implemented as an array of T, but instead punts, so that the
7264 type will be interpreted at runtime.
7265 * There is now some support for cross-compiling in make.sh: each of
7266 the phases of make.sh has its own script. (This should be transparent
7267 to people doing ordinary, non-cross-compile builds.)
7268 * Since my laptop doesn't have hundreds of megabytes of memory like
7269 my desktop machine, I became more motivated to do some items on
7270 my to-do list in order to reduce the size of the system a little:
7271 ** Arrange for various needed-only-at-cold-init things to be
7272 uninterned after cold init. To support this, those things have
7273 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
7274 symbols with such names are now uninterned after cold init).
7275 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
7276 fasl files for cold load.
7277 ** Remove the old compiler structure pooling code (which used to
7278 be conditional on the target feature :SB-ALLOC) completely.
7279 ** Redo the representation of some data in cold init to be more compact.
7280 (I also looked into supporting byte compiled code at bootstrap time,
7281 which would probably reduce the size of the system a lot, but that
7282 looked too complicated, so I punted for now.)
7283 * The maximum signal nesting depth in the src/runtime/ support code has
7284 been reduced from 4096 to 256. (I don't know any reason for the very
7285 large old value. If the new smaller value turns out to break something,
7286 I'll probably just bump it back up.)
7287 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
7289 * Many, many bugs reported by Peter Van Eynde have been added to
7290 the BUGS list; some have even been fixed.
7291 * While enabling dynamic object file loading, I tried to make the
7292 code easier to understand, renaming various functions and variables
7293 with less ambiguous names, and changing some function calling
7294 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
7295 * While trying to figure out how to do the OpenBSD port, I tried to
7296 clean up some of the code in src/runtime/. In particular, I dropped
7297 support for non-POSIX signal handling, added various comments,
7298 tweaked the code to reduce the number of compilation warnings, and
7299 renamed some files to increase consistency.
7300 * To support the new automatic configuration functionality in make.sh,
7301 the source file target-features.lisp-expr has been replaced with the
7302 source file base-target-features.lisp-expr and the machine-generated
7303 file local-target-features.lisp-expr.
7304 * fixed a stupid quoting error in make.sh so that using CMU CL
7305 "lisp -batch" as cross-compilation host works again
7307 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
7309 * DESCRIBE no longer tries to call itself recursively to describe
7310 bound/fbound values, so that it no longer fails on symbols which are
7311 bound to themselves (like keywords, T, and NIL).
7312 * DESCRIBE now works on generic functions.
7313 * The printer now prints less-screwed-up representations of closures
7314 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
7315 * A private symbol is used instead of the :EMPTY keyword previously
7316 used to mark empty slots in hash tables. Thus
7317 (DEFVAR *HT* (MAKE-HASH-TABLE))
7318 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
7319 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
7320 now does what ANSI says that it should. (You can still get
7321 similar noncompliant behavior if bang on the hash table
7322 implementation with all the symbols you get back from
7323 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
7324 This breaks binary compatibility, since tests for equality to
7325 :EMPTY are wired into things like the macroexpansion of
7326 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
7328 * There's now a minimal placeholder implementation for CL:STEP,
7329 as required by ANSI.
7330 * An obscure bug in the interaction of the normal compiler, the byte
7331 compiler, inlining, and structure predicates has been patched
7332 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
7333 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
7335 * Missing ordinary arguments in a macro call are now detected even
7336 when the macro lambda list contains &KEY or &REST.
7337 * The debugger no longer complains about encountering the top of the
7338 stack when you type "FRAME 0" to explicitly instruct it to go to
7339 the top of the stack. And it now prints the frame you request even
7340 if it's the current frame (instead of saying "You are here.").
7341 * As specified by ANSI, the system now always prints keywords
7342 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
7344 * The default initial SIZE of HASH-TABLEs is now smaller.
7345 * Type information from CLOS class dispatch is now propagated
7346 into DEFMETHOD bodies, so that e.g.
7347 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7349 is now basically equivalent to
7350 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7351 (DECLARE (TYPE SINGLE-FLOAT X))
7353 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
7354 operation, without having to do run-time type dispatch.
7355 * The macroexpansion of DEFMETHOD has been tweaked so that it has
7356 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
7357 * Since I don't seem to be making big file reorganizations very often
7358 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
7359 is overflowing my ability to conveniently back them up), I've finally
7360 checked the system into CVS. (The CVS repository is on my home system,
7361 not at SourceForge -- putting it on SourceForge might come later.)
7362 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
7363 high-level GC-NOTIFY-FOO functions send their output. (There's
7364 still very little control of where low-level verbose GC functions
7365 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
7366 less than it used to -- the GC-NOTIFY-FOO functions are now under
7367 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
7368 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
7369 in only one place in the source code, and propagates it automatically
7370 everywhere that it's needed. Thus e.g. when I bump the version from
7371 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
7372 * The C source files now include boilerplate legalese and documentation
7373 at the head of each file (just as the Lisp source files already did).
7374 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
7375 to his page will be replaced with a link to his new CLiki service.
7377 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
7379 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
7380 * The build process now looks for GNU make under the default name "gmake",
7381 instead of "make" as it used to. If GNU make is not available as "gmake"
7382 on your system, you can change this default behavior by setting the
7383 GNUMAKE environment variable.
7384 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
7385 can build without error under CMU CL.
7387 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
7389 * There is now a partial SBCL user manual (with some new text and some
7390 text cribbed from the CMU CL manual).
7391 * The beginnings of a profiler have been added (starting with the
7392 CMU CL profiler and simplifying and cleaning up). Eventually the
7393 main interface should be through the TRACE macro, but for now,
7394 it's still accessed through vaguely CMU-CL-style functions and macros
7395 exported from the package SB-PROFILE.
7396 * Some problems left over from porting CMU CL to the new
7397 cross-compilation bootstrap process have been cleaned up:
7398 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
7399 instead of SB!XC:DEFMACRO, compounded by an oversight on my
7400 part when getting rid of the compiler *BACKEND* stuff.)
7401 ** The value of *NULL-TYPE* was screwed up, because it was
7402 being initialized before the type system knew the final
7403 definition of the 'NULL type. This screwed up several key
7404 optimizations in the compiler, causing inefficiency in all sorts
7405 of places. (I found it because I wanted to understand why
7406 GET-INTERNAL-RUN-TIME was consing.)
7407 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
7408 PROCLAIM FTYPE information. Unfortunately this broke binary
7409 compatibility again, since now the forms output by DEFGENERIC
7410 to refer to functions which didn't exist in 0.6.3.
7411 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
7412 can use the new (as of 0.6.3) transform for SOME into MAP into
7414 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
7415 values to (INTEGER 0 1000000), so that the time code will no longer
7416 occasionally get blown up by Linux returning 1000000 microseconds
7417 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
7418 its output conform to the ANSI spec. (Alas, this makes its output
7419 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
7420 * A full call to MAP NIL with a single sequence argument no longer conses.
7421 * fixes to problems pointed out by Martin Atzmueller:
7422 * The manual page no longer talks about multiprocessing as though
7423 it were currently supported.
7424 * The ILISP support patches have been removed from the distribution,
7425 because as of version 5.10.1, ILISP now supports SBCL without us
7426 having to maintain patches.
7427 * added a modified version of Raymond Toy's recent CMU CL patch for
7428 EQUALP comparison of HASH-TABLE
7430 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
7432 * The system still can't cross-compile itself with
7433 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
7434 entails), but at least it can compile more of itself that way
7435 than it used to be able to, and various buglets which were uncovered
7436 by trying to cross-compile itself that way have now been fixed.
7437 * This release breaks binary compatibility again. This time
7438 at least I've incremented the FASL file format version to 2, so that the
7439 problem can be detected reliably instead of just causing weird errors.
7440 * various new style warnings:
7441 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
7442 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
7443 ** using the lexical binding of a variable named in the *FOO* style
7444 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
7445 as specified by ANSI.
7446 * *RANDOM-STATE* is no longer automatically initialized from
7447 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
7448 default behavior of the system is to repeat its behavior every time
7449 it's run. If you'd like to change this behavior, you can always
7450 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
7451 old convention there was no comparably easy way to get the system to
7452 repeat its behavior every time it was run.
7453 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
7454 FTYPE declarations has been removed, in favor of their ANSI
7455 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
7456 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
7457 the types of their sequence arguments can be determined at compile time.
7458 This is done through a new open code expansion for MAP which eliminates
7459 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
7460 argument types can be determined at compile time.
7461 * The optimizer now transforms COERCE into an identity operation when it
7462 can prove that the coerced object is already of the correct type. (This
7463 can be a win for machine generated code, including the output of other
7464 optimization transforms, such as the MAP transform above.)
7465 * Credit information has been moved from source file headers into CREDITS.
7466 * Source file headers have been made more standard.
7467 * The CASE macro now compiles without complaining even when it has
7470 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
7472 * (Note that the way that the PCL macroexpansions were rewritten
7473 to accommodate the change in DEFGENERIC below breaks binary
7474 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
7475 not run under sbcl-0.6.2. Once we get out of alpha releases,
7476 i.e. hit release 1.0.0, we'll probably try to maintain binary
7477 compatibility between maintenance releases, e.g. between sbcl-1.4.3
7478 and sbcl-1.4.4. Until then, however, it might be fairly common
7479 for maintenance releases to break binary compatibility.)
7480 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
7482 * The reporting of unhandled signals has been changed to print some
7483 explanatory text as well as the report form. (Previously only
7484 the report form was printed.)
7485 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
7486 it defines, so that the compiler no longer issues undefined function
7487 warnings for compiled-but-not-yet-loaded generic functions.
7488 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
7489 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
7490 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
7491 section of the ANSI spec are supported.
7492 * The "" nickname for the "KEYWORD" package has been removed.
7493 The reader still handles symbol tokens which begin with a package marker
7494 as keywords, but it doesn't expose its mechanism for doing so in the
7495 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
7496 * The system now issues STYLE-WARNINGs for contradictory TYPE
7497 proclamations. (Warnings for contradictory FTYPE proclamations would
7498 be nice too, but those can't be done usefully unless the type system
7499 is made smarter about FUNCTION types.)
7500 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
7501 systematized, so that "*target-*.lisp is supposed to exist only on the
7502 target and imply that there's a related file which exists on the
7503 host, and *host-*.lisp is supposed to exist only on the host and imply
7504 that there's a related file which exists on the target. This involves a
7505 lot of renaming. Hopefully the acute confusion caused by the renaming
7506 will be justified by the reduction in chronic confusion..
7507 ** runtime-type.lisp -> early-target-type.lisp
7508 ** target-type.lisp -> late-target-type.lisp
7509 ** early-host-format.lisp -> early-format.lisp
7510 ** late-host-format.lisp -> late-format.lisp
7511 ** host-error.lisp -> misc-error.lisp
7512 ** early-error.lisp -> early-target-error.lisp
7513 ** late-error.lisp -> late-target-error.lisp
7514 ** host-defboot.lisp -> early-defboot.lisp
7515 ** code/misc.lisp -> code/target-misc.lisp
7516 ** code/host-misc.lisp -> code/misc.lisp
7517 ** code/numbers.lisp -> code/target-numbers.lisp
7518 ** code/early-numbers.lisp -> numbers.lisp
7519 ** early-host-type.lisp -> early-type.lisp
7520 ** late-host-type.lisp -> late-type.lisp
7521 ** host-typep.lisp -> typep.lisp
7522 ** load.lisp -> target-load.lisp
7523 ** host-load.lisp -> load.lisp
7524 ** host-disassem.lisp -> disassem.lisp
7525 ** host-insts.lisp -> insts.lisp
7526 ** byte-comp.lisp -> target-byte-comp.lisp
7527 ** host-byte-comp.lisp -> byte-comp.lisp
7528 ** host-signal.lisp -> signal.lisp
7529 ** host-defstruct.lisp -> defstruct.lisp
7530 ** late-target-type.lisp -> deftypes-for-target.lisp
7531 Furthermore, several other previously target-only files foo.lisp (e.g.
7532 hash-table.lisp and random.lisp) have been split into a target-and-host
7533 foo.lisp file and a target-only target-foo.lisp file, with their key type
7534 definitions in the target-and-host part, so that the cross-compiler will
7535 know more about target types.
7536 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
7537 gone away. In their place are various *BACKEND-FOO* variables
7538 corresponding to the slots of the old structure.
7539 * A bug which caused the SB-COLD bootstrap-time package to be propagated
7540 into the target SBCL has been fixed.
7541 * The chill.lisp system for loading cold code into a running SBCL
7543 * Support for the CMU CL "scavenger hook" extension has been removed.
7544 (It was undocumented and unused in the CMU CL sources that SBCL was
7545 derived from, and stale in sbcl-0.6.1.)
7546 * Various errors in the cross-compiler type system were detected
7547 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
7548 (enabling various consistency checks). Many of them were fixed,
7549 but some hard problems remain, so the compiler is back to
7550 running without *TYPE-SYSTEM-INITIALIZED* for now.
7551 * As part of the cross-compiler type system cleanup, I implemented
7552 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
7553 * I have started adding UNCROSS calls throughout the type system
7554 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
7555 on cross-compiler input files will be able to go away, and various
7557 * CONSTANTP now returns true for quoted forms (as explicitly required
7560 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
7562 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
7563 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
7564 (MAKE-LIST -1). In the longer term, it ought to become true
7565 that declarations are assertions even at SAFETY 1. For now, it's not
7566 quite true even at SAFETY 3, but it's at least more nearly true..
7567 (Note that this change seems to increases the size of the system by
7568 O(5%) and to decrease the speed of the compiler by 20% or more.)
7569 * changed ALIEN printing to be much more abbreviated, as a short-term fix
7570 for the problem of printing dozens of lines of distracting information
7571 about low-level system machinery as part of the top stack frame
7572 on entry to the debugger when an undefined function was called.
7573 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
7574 is not reset to COMMON-LISP-USER.
7575 * Compilation of stuff related to dyncount.lisp has been made conditional
7576 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
7577 smaller. The various dyncount-related symbols have been moved into
7578 a new "SB-DYNCOUNT" package.
7579 * tty-inspect.lisp has been renamed to inspect.lisp.
7580 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
7581 feature has gone away. (When we eventually port to other flavors of
7582 libc and/or Unix, we'll try to make the differences between flavors
7583 invisible at the user level.)
7584 * Various other *FEATURES* tags, and/or their associated conditionals,
7585 have been removed if obsolescent, or given better documentation, or
7586 sometimes given more-mnemonic names.
7588 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
7590 * tidied up "make.sh" script
7591 * tidied up system directory structure
7592 * better "clean.sh" behavior
7593 * added doc/FOR-CMUCL-DEVELOPERS
7594 * many many small tweaks to output format, e.g. removing possibly-confusing
7595 trailing #\. character in DESCRIBE-INSTANCE
7596 * (EQUALP #\A 'A) no longer signals an error.
7597 * new hashing code, including EQUALP hashing
7598 * tidied up Lisp initialization and toplevel
7599 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
7600 * command line argument processing
7601 * added POSIX-GETENV function to deal with Unix-ish environment variables
7602 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
7603 terminating SBCL on EOF
7604 * non-verbose GC by default
7605 * There is no more "sbcl" shell script; the sbcl file is now the C
7606 runtime executable (just like CMU CL).
7607 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
7609 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
7610 symbol and package information as Lisp native symbol and package objects
7611 instead of strings naming symbols and strings naming packages. This way,
7612 whenever packages are renamed (as in warm init), debug information is
7613 transformed along with everything else.
7614 * tweaked the optimization policy declarations which control the building
7615 of SBCL itself. Now, among other things, the system no longer saves
7616 source location debugging information. (This helps two problems at once
7617 by reducing SBCL size and by keeping SBCL from trying to look for its
7618 sources -- which may not exist -- when reporting errors.)
7619 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
7620 debugging and testing purposes
7621 * cleaned up printing, making the printer call PRINT-OBJECT for
7622 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
7623 methods, giving nearly-ANSI behavior
7624 * converted almost all special variables to use *FOO* naming convention
7625 * deleted PARSE-TIME functionality, since it can be done portably
7626 * moved some files out of cold init into warm init
7627 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
7629 * regularized formatting of source files
7630 * added an install.sh script
7631 * fixed ridiculous memory usage of cross-compiler by making
7632 compiler/alloc.lisp not try to do pooling unless it can hook
7633 itself into the GC of the cross-compilation host. Now the system
7634 builds nicely on my old laptop.
7635 * added :SB-ALLOC in target-features.lisp-expr
7636 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
7637 was not implemented)
7638 * re-did condition handling and note reporting in the compiler. Notes
7639 are no longer handled by signalling conditions. Style warnings
7640 and warnings are handled more correctly and reported in such a way
7641 that it's easy to find one or the other in your output (so that you
7642 can e.g. figure out which of many problems caused COMPILE-FILE to
7644 * changed the severity of several compiler warnings from full WARNING
7645 to STYLE-WARNING in order to conform with the ANSI spec; also changed
7646 compiler note reporting so that it doesn't use the condition system
7647 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
7648 COMPILE-FILE command)
7649 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
7650 function. As a consequence, START-BLOCK and END-BLOCK declarations are
7651 no longer supported, since their implementation was deeply intertwingled
7652 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
7653 * removed bogus "support" for compiler macros named (SETF FOO), and
7654 removed the compiler macro for SETF INFO (but only after making a fool
7655 of myself on the cmucl-imp mailing list by posting a bogus patch for
7656 DEFINE-COMPILER-MACRO..)
7657 * Compiled files containing forms which have side effects on the Lisp
7658 reader (such as DEFPACKAGE forms) are now handled more correctly.
7659 (Compiler queuing of top level lambdas has been suppressed by setting
7660 *TOP-LEVEL-LAMBDA-MAX* to 0. )
7661 * deleted various currently-unused source files, e.g. gengc.lisp. They
7662 may be added back at some point e.g. when porting to other architectures,
7663 but until they are it's distracting to distribute them and to try to
7665 * deleted "UNCROSS couldn't recurse through.." style warnings, since
7666 there were so many of them they're just distractions, and UNCROSS is
7667 known to be able to handle the current sources
7668 * moved PROFILE functionality into TRACE, so that it will be clear
7669 how the wrapping and unwrapping of functions when you profile them
7670 interacts with the wrapping and unwrapping of functions when you
7671 trace them. (Actually, the functionality isn't there yet, but at least
7672 the interface specification is there. Hopefully, the functionality will
7673 arrive with some future maintenance release.)
7674 * removed host-oops.lisp
7675 * changed signature of QUIT function to allow UNIX-CODE argument
7676 * fixed READ-SEQUENCE bug
7677 * tweaked verbose GC output so that it looks more like the progress
7678 output that ANSI specifies for functions like LOAD
7679 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
7680 * added <http://sbcl.sourceforge.com> to the banner information printed by