1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
3 changes relative to sbcl-1.3.4:
4 * enhancement: the platform's strtod() is exposed as SB-POSIX:STRTOD
5 * enhancement: speed up debug info creation for highly nested functions.
7 * bug fix: better wording in missed optimization note. (lp#1003265)
8 * bug fix: interpreted (CAS SVREF) was broken
10 changes in sbcl-1.3.4 relative to sbcl-1.3.3:
11 * enhancement: who-sets and who-references work on DEFGLOBAL. (lp#1552997)
12 * enhancement: CONSTANTP understands backquote.
13 e.g. (CONSTANTP '`(0 (,CHAR-CODE-LIMIT))) => T
14 * optimization: improvements to sequence functions: CONCATENATE, SUBSTITUTE,
16 * bug fix: SB-EVAL does not signal an error for (THE KEYWORD :FOO)
17 * bug fix: a DEFTYPE name that is redefined into a DEFSTRUCT name
18 is less likely to cause confusion in the compiler.
19 * bug fix: DOCUMENTATION works as intended for classes with non-standard
21 * bug fix: (TYPEP <extended-sequence> <extended-sequence-class>) no longer
22 returns NIL in certain situations
23 * bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE accept class objects as
25 * bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE expand DEFTYPEs in
28 changes in sbcl-1.3.3 relative to sbcl-1.3.2:
29 * enhancement: warn about argument mismatch for functions passed as
30 arguments to other functions (e.g. REDUCE, MAP) at compile-time.
31 * optimization: functions accepting other functions (e.g. REDUCE, FIND) can
32 now be constant-folded if all function arguments are declared as foldable.
33 * optimization: improved logical operations on integers of unknown type.
34 * bug fix: exception handling no longer leaks memory on OS X. (lp#326238)
36 changes in sbcl-1.3.2 relative to sbcl-1.3.1:
37 * enhancement: {READ,WRITE}-SEQUENCE are much faster for some combinations
38 of short sequences and stream types
39 * enhancement: MAKE-LIST's result can be stack-allocated on x86-64
40 * bug fix: WRITE-SEQUENCE no longer fails to write lists containing integers
42 * bug fix: LOGTEST (and hence ODDP) no longer conses when given fixnum
43 arguments and small bit positions. (lp#1277690)
44 * bug fix: READ-FROM-STRING compiler-macro does not permute its arguments
45 * bug fix: DEFUN of a function name that collides with a system-generated
46 structure accessor does not confuse the runtime. (lp#540063)
47 * bug fix: heap corruption from miscompiled RESTART-BIND. (lp#1530390)
49 changes in sbcl-1.3.1 relative to sbcl-1.3.0:
50 * enhancement: SB-THREAD support for ARM64.
51 * enhancement: compiling an out-of-line DEFSTRUCT constructor call
52 will warn if a defaulted value is incompatible with its slot type.
53 * enhancement: a local INLINE declaration on a structure constructor
54 will work as intended, subject to any other factors that inhibit
55 inlining, even if the DEFSTRUCT was not itself within a global
56 INLINE proclamation for the named constructor
57 * enhancement: SB-EXT:DYNAMIC-SPACE-SIZE is now defined for cheneygc.
58 * enhancement: x86[-64] platforms support SB-EXT:CAS on structure slots
60 * enhancement: the interleaved structure slot optimization from
61 release 1.2.6 has been ported to 32-bit x86, Sparc, PowerPC, ARM64.
62 * enhancement: SB-THREAD:JOIN-THREAD signals a proper error when an attempt
63 is made to join the current thread
64 * bug fix: NTH-VALUE does not cause stack overflow. (lp#1511419)
65 * bug fix: structure constructor type checking is better. (lp#1508735)
66 * bug fix: supplied-p variables for unused optional or keyword variables no
67 longer confuse SB-DI:PARSE-COMPILED-DEBUG-FUN-LAMBDA-LIST (and thus the
68 backtrace machinery) (lp#1498644)
69 * bug fix: Backtrace correctly handles undefined-function frames on MIPS.
70 * bug fix: WITH-FLOAT-TRAPS-MASKED correctly clears accrued traps on MIPS
71 (fixes issues with floating-point type derivation in the compiler).
72 * bug fix: FLOAT-NAN-P and FLOAT-TRAPPING-NAN-P now work correctly on MIPS
74 * bug fix: MIPS context register access now masks to 32 bits (fixing issues
75 parsing negative-fixnum values for internal-error arguments and escaped
76 debug variables on 64-bit CPUs).
77 * bug fix: (SETF SAP-REF-DOUBLE) with constant offset on big-endian MIPS
79 * bug fix: Callback parameter (argument) handling on MIPS is now vastly
81 * bug fix: %DECREMENT-SEMAPHORE adjusts the remaining timeout after a
84 changes in sbcl-1.3.0 relative to sbcl-1.2.16:
85 * minor incompatible change: the environment passed to a macro/setf/deftype
86 expander is not always an object of type SB-KERNEL:LEXENV.
87 It can be nil, as is permissible by the standard.
88 * enhancement: ported to ARM64 Linux.
89 * enhancement: a new interpreter is included which has many benefits
90 over sb-eval. It is disabled by default. See src/interpreter/README
91 for instructions to enable it, and further details.
92 * bug fix: calling COMPILE when SB-EXT:*EVALUATOR-MODE* was :INTERPRET
93 would fail to perform "normal semantic processing such as macro expansion"
94 as stipulated by X3J13 issue LOAD-TIME-EVAL.
95 * bug fix: SB-UNICODE:CONFUSABLE-P no longer treats "<" and the empty
96 string as confusable. (lp#1504739)
97 * bug fix: (ASSERT (COMPUTE-IT ...)) would expand incorrectly
98 if COMPUTE-IT was a local macro that shadowed a global function.
99 * bug fix: SB-POSIX:CFSETISPEED and SB-POSIX:CFSETOSPEED now work properly
100 on platforms that use only the minimum specified set of fields in struct
101 termios (verified on Linux, still known not to work on FreeBSD and NetBSD,
102 very probably others). (partial fix for lp#1500951)
104 changes in sbcl-1.2.16 relative to sbcl-1.2.15:
105 * enhancement: by default, timers with a repeat interval do not "catch up"
106 by repeatedly calling their function after a clock discontinuity such as a
107 suspend and resume cycle
108 * bug fix: correctly restore multiple values on the stack in the presence of
109 alien calls. (lp#1489590)
110 * bug fix: MAKE-STRING-OUTPUT-STREAM enforces that :ELEMENT-TYPE
111 is a subtype of CHARACTER.
112 * bug fix: an EQL method specializer no longer causes garbage retention
113 if there are no extant methods using the specializer. (lp#492851)
115 changes in sbcl-1.2.15 relative to sbcl-1.2.14:
116 * new feature: DEPRECATION declaration for functions, variables and types
117 causes {EARLY,LATE,FINAL}-DEPRECATION-WARNING to be signaled when subject
118 of the declaration is used. Integrated with DESCRIBE, DOCUMENTATION and
119 SB-CLTL2:{VARIABLE,FUNCTION}-INFORMATION. Documented in the "Deprecation"
120 section of the manual.
121 * enhancement: ASDF updated to 3.1.5. (lp#1476867)
122 * enhancement: definitions within PROGN get proper source locations when
123 compiled (needs latest Slime to take advantage of this). (lp#1473147)
124 * enhancement: source locations for DEFCLASS slots now point directly to the
125 slot definitions, not the whole DEFCLASS form.
126 * bug fix: better source location in the presence of quoted forms.
128 * bug fix: better source locations inside backqoute. (lp#1361502)
129 * bug fix: HANDLER-BIND requires that the handler-function be
130 a function designator at the time of binding establishment. (lp#1480679)
131 * bug fix: inlined functions surrounded by nested macrolets are properly
134 changes in sbcl-1.2.14 relative to sbcl-1.2.13:
135 * minor incompatible change: The name of a compiled anonymous lambda
136 as returned by the third value of FUNCTION-LAMBDA-EXPRESSION can have
137 a lambda-list-like list following the introductory LAMBDA that is not
138 in general a syntactically valid lambda list. Specifically, it won't
139 retain default values, supplied-p variables, or &KEY or &AUX bindings.
140 * enhancement: DESTRUCTURING-BIND has been totally reimplemented from
141 scratch to address a handful of performance and correctness issues.
142 Some minor behavioral differences exist regarding order of evaluation
143 of default forms for unsupplied &OPTIONAL and &KEY arguments
144 when nested destructuring patterns are involved.
145 (lp#707556, lp#707573, lp#707578, lp#708051)
146 * enhancement: DEFCONSTANT and DEFSTRUCT respect package locks. (lp#1186238,
148 * enhancement: sb-unicode:normalize-string has a new optional argument,
149 FILTER, a callback which controls which decomposed characters are
150 collected. Useful for stripping away diacritics more efficiently.
151 * bug fix: (TYPE-OF ARRAY) for a non-simple array is subject to change
152 after a call of ADJUST-ARRAY. (lp#1333731)
153 * bug fix: Dynamic-extent allocation with a loop between allocating a value
154 and the start of its environment no longer discards the allocated data
155 when the loop is taken. (lp#1472785)
156 * bug fix: Variable-reference elimination no longer generates incorrect code
157 under certain circumstances. (lp#1446891)
158 * bug fix: variables with EQL types are no longer treated as constants by
159 VOPs, which caused problems with closures being allocated for such
160 variables, but they remained unused. (lp#1390149)
161 * bug fix: Windows installer generates registry key name
162 correctly. (lp#1476447)
164 changes in sbcl-1.2.13 relative to sbcl-1.2.12:
165 * incompatible change: on success, TRY-SEMAPHORE and WAIT-ON-SEMAPHORE
167 * enhancement: WAIT-ON-SEMAPHORE accepts a decrement parameter
168 * enhancement: JOIN-THREAD allows distinguishing timeout vs. abort in all
170 * enhancement: On Windows DBG_PRINTEXCEPTION_C is handled and its message is
171 printed. (lp#1437947)
172 * bug-fix: TRUENAME works properly on broken symlinks presented as
173 directories. (lp#1400003)
174 * bug fix: Inlined DPB and DEPOSIT-FIELD don't interfere with left-to-right
175 order of argument evaluation. (lp#1458190)
176 * bug fix: (SETF (LDB (BYTE 1 2 JUNK) X) 0) is rightly rejected.
177 * bug fix: DEFSETF lambda lists should not permit argument destructuring.
178 * bug fix: calls to (SETF SLOT-VALUE) on a missing slot would in certain
179 situations incorrectly return the result of a SLOT-MISSING method
180 instead of always returning the new value. (lp#1460381)
181 * bug fix: a DEFMACRO occurring not at toplevel and capturing parts of
182 its lexical environment (thus being a closure) caused expressions
183 involving the macro name to cause corruption in the pretty-printer
184 due to faulty introspection of the lambda list of a closure.
185 * bug fix: out of line MAP/MAP-INTO check that the results produced by the
186 function are of the matching sequence type. (lp#1459581)
187 * bug fix: pretty-printing of '(LET `((,X ,Y)) :B) is handled correctly.
189 changes in sbcl-1.2.12 relative to sbcl-1.2.11:
190 * minor incompatible change: the SB-C::*POLICY* variable is no longer
191 a list. Code which manipulated it as such (including but not limited
192 to non-bundled releases of ASDF) will need to be revised.
193 * enhancement: The input stream for COMPILE-FILE implements
195 * enhancement: EVAL errors that occur by way of LOAD report the starting
196 line and column number of the erring toplevel form. (lp#565247)
197 * optimization: better MAP and MAP-INTO on known vector result types.
198 * bug fix: Read/modify/write macros accessing a place which is a
199 composition of CAR+CDR operations, such as (SHIFTF (CADR X) (ELT V 0)),
200 do not access subforms more than once. (lp#1450968)
201 * bug fix: short form of DEFSETF no longer allows trailing junk.
202 * bug fix: DEFINE-MODIFY-MACRO respects the provisions of CLHS 5.1.3
203 regarding argument evaluation order. (lp#1452539)
204 * bug fix: POP works as specified in CLHS if the setter for its
205 argument has a side-effect on the existing CAR value. (lp#1454021)
206 * bug fix: Reading "#()" with a positive numeric argument signals a
207 reader error. As specified, reading "#1()" has undefined consequences,
208 so correct portable code should be indifferent to this. (lp#1252100)
209 * bug fix: Malformed reader conditionals such as "(#-no-such-feature)"
210 and "(#+sbcl)" no longer parse as NIL. (lp#1454400)
212 changes in sbcl-1.2.11 relative to sbcl-1.2.10:
213 * enhancement: SET-PPRINT-DISPATCH will warn when given an expression in
214 which any part is unrecognizable as a legal type-specifier.
215 The dispatch table will be altered, but the new entry is disabled.
216 Subsequent type-defining forms will cause pprint-dispatch tables to
217 re-examine whether any disabled entries should be enabled. (lp#1429520)
218 * enhancement: Loading code containing calls to a deprecated function will,
219 under most circumstances, signal warnings similar to compiling such code.
220 The usual caveat holds about not detecting calls through a computed name,
221 as in (funcall (intern "DEPRECATED-FUN" "SB-EXT")).
222 * enhancement: (SB-EXT:COMPILE-FILE-LINE) is a new macro that expands
223 to a constant (VALUES integer integer) indicating the source line/column
224 from which it was read, intended for logging Lisp runtime errors in
225 a style similar to that afforded by the C preprocessor __LINE__ macro.
226 Similarly (SB-EXT:COMPILE-FILE-POSITION) returns a position in characters.
227 * enhancement: improved source locations for VOPs, alien types and
229 * bug fix: functions in :FINAL deprecation have the correct docstring.
230 No visible change, as no such functions presently exist. (lp#1439151)
231 * bug fix: (SETF (FDEFINITION this) (FDEFINITION OTHER)) signals an error
232 if OTHER names either a macro or special-operator. (lp#1439921)
234 changes in sbcl-1.2.10 relative to sbcl-1.2.9:
235 * minor incompatible change: all SOCKINT::WIN32-* functions have been
236 deprecated with EARLY deprecation state
237 * minor incompatible change: performing introspection via the system-internal
238 SB-INT:INFO function could expose that :TYPE :TRANSLATOR is not necessarily
239 a function, as it always was before. (Affects swank-fancy-inspector)
240 * enhancement: The value of SXHASH on bit-vectors of length equal to the
241 word size now depends on the vector's contents instead of being constant;
242 its value on bit-vectors of length divisible by the word size now depends
243 also on the contents of the vector's last word.
244 * bug-fix: sb-bsd-sockets on win32 uses proper C function declarations.
246 * bug fix: A new dead code elimination phase removes dead code loops
247 that confuse stack analysis. (lp#1255782, lp#308914)
248 * bug fix: A toplevel form which was simple enough to bypass the main
249 compiler in COMPILE-FILE, and which contained an empty SETQ or PROGN
250 would produce an invalid fasl file. (lp#1427050)
251 * bug fix: The compiler no longer signals an internal error when
252 encountering invalid FUNCTION forms like (function 1)
253 * bug fix: express proper dependencies in the ASDF contrib, to support
254 systems where make runs in parallel. (lp#1434768; thanks to Nikhil
257 changes in sbcl-1.2.9 relative to sbcl-1.2.8:
258 * minor incompatible change and bug fix: unboxed numeric constants
259 on x86oids are arranged in memory differently, and the disassembler
260 does not show them separately in DISASSEMBLE, but does
261 if DISASSEMBLE-CODE-COMPONENT is used. (lp#1421987)
262 * optimization: The compiler's treatment of type specifiers makes
263 it slightly faster and more memory-efficient. Portable code
264 should be indifferent to this change, however, users of
265 SB-INTROSPECT:FUNCTION-TYPE might notice that (MEMBER T NIL)
266 and (MEMBER NIL T) are both internally collapsed to the former,
267 so that the latter can never be obtained as part of an FTYPE.
268 * optimization: a TYPEP call in which the second argument is not a
269 QUOTE form but nevertheless recognized as a compile-time constant
270 might open-code the test. One scenario for this involves backquote,
271 such as (TYPEP x `(my-type ,some-arg)). Code which relied upon
272 deferring until runtime should declare (NOTINLINE TYPEP).
273 [Due to the sematic constraints of DEFTYPE etc in in CLHS 3.2.2.3,
274 code requiring delayed evaluation could be unportable though.]
275 * enhancement: unused variables at the top-level are now reported.
277 * bug fix: DEFCLASS handles cyclic {super,meta}class relations better
279 * bug fix: compiler no longer signals an error when compiling certain
280 function calls. (lp#1416704, lp#404441, lp#1417822, lp#1234919)
281 * bug fix: compiler doesn't stumble on a LOGIOR transform. (lp#1389433)
282 * bug fix: more robust debugger and backtraces. (lp#1413850, lp#1099500,
283 lp#1412881, lp#945261, lp#1419205, lp#1409402)
284 * bug fix: files larger than 4GB can now be compiled.
285 * bug fix: x86 truncated results from 64-bit foreign functions to 32 bits.
286 * bug fix: file-position didn't work on large files on win32. (lp#1271545)
287 * bug fix: callbacks from foreign threads can work without enabling
289 * bug fix: sb-introspect:function-lambda-list works properly on interpeted
291 * bug fix: ADJUST-ARRAY properly handles non-adjustable arrays. (lp#886418)
292 * bug fix: compiler no longer fails to dump a multidimensional array
293 constant involving a circular reference to itself
294 * bug fix: conditional and nested DX allocation no longer confuse the
295 compiler in STACK analysis. (lp#1044465)
296 * bug fix: sb-rotate-byte constant folding bug fixed. (lp#1423682)
298 changes in sbcl-1.2.8 relative to sbcl-1.2.7:
299 * enhancement: better error and warning messages. (lp#1314767, lp#736383)
300 * enhancement: backtrace for invalid argument count produces the exact
301 supplied arguments including the extra ones, on x86, x86-64 and ARM.
302 * enhancement: a STYLE-WARNING is signaled for DEFSTRUCT accessors which
303 are used before the structure is defined; similarly for the predicate.
304 * optimization: FORMAT NIL with only ~a and string arguments is transformed
306 * optimization: POSITION and FIND when inlined into code that is compiled
307 with qualities of safety < 2 and speed > space will no longer signal
308 an error on circular lists, but will potentially loop forever if given
309 no :END constraint. As was always the case, calls that are not inlined
310 are safe regardless of lexical policy.
311 * bug fix: CLOS methods compiled with (OPTIMIZE (DEBUG 0))
312 no longer cause debugger failure when printing a backtrace
313 * bug fix: more resilience to deleted code. (lp#1308328, lp#1390544)
314 * bug fix: the CLHS example of MAKE-LOAD-FORM involving TREE-WITH-PARENT
315 did not work, and now it does.
317 changes in sbcl-1.2.7 relative to sbcl-1.2.6:
318 * optimization: returning constant values refers to preboxed constants
319 more reliably. (lp#1398785)
320 * enhancement: a STYLE-WARNING is produced if a compiler-macro is defined
321 for a function after at least one ordinary (not inlined) call to that
322 function was compiled, indicating a likely compilation order problem.
323 Likewise a warning ensues if a call is compiled to a function
324 that is subsequently proclaimed INLINE.
325 * enhancement: always lose() when something goes wrong while saving a core
326 (instead of just printing an error on stderr in some situations).
327 * enhancement: frames in the debugger are now restartable by default.
328 * bug fix: restore error handling on Windows x86.
329 * bug fix: MAKE-SEQUENCE detects type errors in its :INITIAL-ELEMENT
330 at compile-time when possible. (lp#330299)
331 * bug fix: parsing of malformed type specifiers no longer results
332 in a memory-fault-error.
333 * bug fix: LOOP properly destructures nested lists in WITH.
334 * bug fix: MACROEXPANDing the redefinition of an alien structure type no
335 longer signals the wrong error.
336 * bug fix: PROGV doesn't get confused by forced DEBUG 3 (lp#1405456).
338 changes in sbcl-1.2.6 relative to sbcl-1.2.5:
339 * enhancement: SERVE-EVENTS uses the poll() system call in lieu of
340 select() if the OS has the former. Previously poll() was used
341 only if waiting on exactly one file descriptor.
342 * enhancement: efficiency of access to untagged structure slots is improved
343 on x86-64, and the order of slots in memory is exactly as specified by
344 defstruct, simplifying use of structures as arguments to foreign calls.
345 * bug fix: SB-DEBUG:ARG now works in all TRACE options which evaluate forms.
347 * bug fix: GC memory corruption during internal memory handling.
348 * bug fix: duplicate effective-slot-definition objects as compared
349 by EQ on name could be present in CLASS-SLOTS of a class whose
350 metaclass was structure-class or condition-class. (lp#1049423)
351 * bug fix: HANDLER-BIND with empty bindings works again; regression in
353 * bug fix: ATOMIC-INCF works on structure slots in interpreted code.
355 * bug fix: MAKE-ARRAY properly handles character types like (eql #\a) and
356 (member #\a #\c). (lp#1392068)
357 * bug fix: READ sometimes accidentally preserved a whitespace character
358 after a token when it should not have. (lp#327790)
360 changes in sbcl-1.2.5 relative to sbcl-1.2.4:
361 * enhancement: sb-bsd-sockets now has basic support for IPv6
362 * enhancement: An sb-unicode package has been added, containing
363 many functions related to handling Unicode text
364 * enhancement: The reader now normalizes symbols to Normalization
365 Form KC (NFKC). This behavior can be disabled with
366 SB-EXT:READTABLE-NORMALIZATION
367 * enhancement: a style-warning is signaled if OPTIMIZE declarations
368 multiply specify a quality with differing values. (lp#310267)
369 * bug fix: conservatively pointed to pages wipe out unused dwords so
370 that they cannot act as false roots in turn.
371 * bug fix: the walker's handling of lexical variable and symbol-macro
372 bindings is improved (lp#375326, lp#1368305)
373 * bug fix: HANDLER-{BIND,CASE} no longer drop into ldb when a clause
374 contains an undefined condition type; regression in 1.1.19 (lp#1378939)
375 * bug fix: in interpreted code, inequality predicates did not type-check
376 arguments that weren't examined, and a 1-argument use of MIN or MAX
377 accepted a complex number. (lp#1373702)
378 * bug fix: APROPOS and APROPOS-LIST handle inherited symbols correctly.
379 (lp#1364413, thanks to Zach Beane)
381 changes in sbcl-1.2.4 relative to sbcl-1.2.3:
382 * enhancement: the sequence functions MAP, CONCATENATE and MERGE now call
383 the new generic functions SEQUENCE:MAP, SEQUENCE:CONCATENATE and
384 SEQUENCE:MERGE respectively when the specified result type designates an
386 * bug fix: Wrong binding order of supplied-p parameters in macro lambda
388 * bug fix: VALIDATE-SUPERCLASS returns T when the superclass is the
389 universal superclass (lp#1332983)
390 * bug fix: reading an uninterned symbol whose print name has the
391 syntax of an integer signals an error. (lp#310062)
392 * bug fix: the walker is less likely to be confused when walking LET* forms
393 with special bindings and use of those bindings and others of the same
395 * bug fix: a rare bug affecting 32-bit platforms resulting in a
396 fatal condition with the message "Globaldb rehash failure" has been fixed.
398 changes in sbcl-1.2.3 relative to sbcl-1.2.2:
399 * enhancement: DOCUMENTATION works on instances of
400 FUNCALLABLE-STANDARD-CLASS
401 * enhancement: ASSERT reports arguments of calls to lexical functions in
402 additional to global functions.
403 * enhancement: ASDF updated to 3.1.3
404 * enhancement: UIOP can be loaded without ASDF.
405 * bug fix: some methods on CHANGE-CLASS did not finalize the new class
406 before accessing its class-precedence list.
407 * bug fix: CHANGE-CLASS no longer fails on unbound slots in the source
409 * bug fix: CHANGE-CLASS signals an appropriate error when the destination
410 class is a FORWARD-REFERENCED-CLASS.
411 * bug fix: CHANGE-CLASS no longer signals bogus TYPE-ERRORs for slots for
412 which initargs have been supplied.
413 * bug fix: saving cores on ARM was broken since the introduction of GENCGC.
415 * bug fix: macroexpanding a backquoted expression involving ",."
416 outside of the compiler failed. (lp#1354623)
418 changes in sbcl-1.2.2 relative to sbcl-1.2.1:
419 * incompatible change: the #\` ("backquote") reader macro was reimplemented
420 to support robust pretty-printing. Reading a form involving #\` produces
421 an invocation of the QUASIQUOTE ordinary macro which may contain subforms
422 that are not lists. Code that unportably attempts operations on
423 un-evaluated forms resulting therefrom, e.g.
424 (SUBST a b (read-from-string "`(x (,y))"))
425 might generate incorrect results and/or errors.
426 * enhancement: support for GNU/kFreeBSD x86.
427 * enhancement: ATOMIC-INCF and ATOMIC-DECF can operate on (CAR x), (CDR x)
428 and DEFGLOBAL variables of type fixnum.
429 * enhancement: arithmetic constant reduction is now performed on defconstant
430 constants too. (lp#1337069).
431 * bug fix: certain ftype proclamations containing &optional t &rest t no
432 longer cause subsequent definitions to signal bogus style-warnings.
433 * bug fix: #\Bell and #\Bel now read to different characters. (lp#1319452).
434 * bug fix: CAS SYMBOL-VALUE on locally special variables didn't work.
437 changes in sbcl-1.2.1 relative to sbcl-1.2.0:
438 * enhancement: GENCGC is enabled on ARM.
439 * enhancement: better error reporting for invalid calls to local functions.
440 * enhancement: support for GNU/kFreeBSD distributions. (lp#1079954, thanks
442 * enhancement: experimental support for threads on NetBSD/x86-64. (thanks
444 * enhancement: support for DragonFly BSD. (lp#1292845, thanks to Vasily
446 * bug fix: TYPE-OF must not return AND/OR/NOT expressions.
448 * bug fix: accessing NIL arrays stopped producing errors. (lp#1311421)
449 * bug fix: DISASSEMBLE no longer prints unwanted stuff. (lp#1251861)
450 * bug fix: compiling SVREF on unknown types no longer produces scary errors.
452 * bug fix: assorted LOOP fixes and enhancements. (lp#645534, lp#1322923,
453 lp#700538, lp#613876, lp#695286, lp#798388)
454 * bug fix: silence compiler notes from the SEARCH transform. (lp#1071310)
455 * bug fix: array type intersection handles T and unknown element types
456 correctly. (lp#1258716)
457 * bug fix: fix a corner case in array type unparsing that would result in
458 misleading translations from our internal type representation.
459 * bug fix: array-rank now sees through union and intersection types.
461 * bug fix: when DECLARE expressions are in the wrong place, be careful not
462 to attempt to evaluate the subforms. (lp#573747; thanks to Roman
464 * bug fix: misplaced and missing declarations in DEFTRANSFORM. (lp#1066451)
465 * bug fix: FBOUNDP returned NIL for a class of incorrect function names
466 instead of signaling an error. (lp#1095483)
467 * bug fix: fix a compile-time AVER in regalloc: lifetime analysis
468 used to (rarely) introduce duplicate conflict markers in a single
469 TN/block pair. (lp#1327008)
471 changes in sbcl-1.2.0 relative to sbcl-1.1.18:
472 * bug fix: read-time-eval backquote context mixup. (lp#1321047)
473 * enhancement: when SAVE-LISP-AND-DIE fails due multiple threads, the
474 report of the signaled conditions lists currently running threads.
475 * enhancement: ported to ARM linux.
476 * enhancement: sb-gmp contrib has been updated. (lp#1305266)
477 * enhancement: new contrib sb-mpfr by Stephan Frank.
478 * bug fix: MAKE-SEQUENCE works with sequence types defined via DEFTYPE
479 (lp#1315846, thanks to Mark Cox)
480 * bug fix: SET-[DISPATCH-]MACRO-CHARACTER should coerce a symbolic
481 function-designator to a function only as needed. (lp#1012335)
482 * bug fix: remove references to asdf-install from the manual. (lp#1207544,
483 thanks to Thomas Hlavaty)
484 * bug fix: handle --without-xxx options to make.sh more carefully.
485 (lp#1246665, thanks to Richard M Kreuter)
486 * bug fix: prevent maybe-delete-exit from doing semantically broken things
487 with local exits. (lp#309099, lp#518099, lp#533930)
488 * bug fix: attempts to subclass BUILT-IN-CLASSes signal errors, as required
491 changes in sbcl-1.1.18 relative to sbcl-1.1.17:
492 * optimization: COERCE is now more effecient for more cases when the type is
493 known at compile-time.
495 * bug fix: correctly inherit condition initforms. (lp#1300904)
496 * bug fix: properly pprint literal functions inside nested lists.
498 * bug fix: more-correctly handle array-type unity (broken for ages, causing
499 compilation problems since 1.1.13.x due to smarter TYPEP type propagation,
500 reported by jasom in #lisp).
502 changes in sbcl-1.1.17 relative to sbcl-1.1.16:
503 * enhancement: printing backtraces respects
504 SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* when printing call arguments
506 * optimization: defstruct out-of-line accessor are now as fast as inlined.
508 * bug fix: INVOKE-RESTART-INTERACTIVELY no longer refuses to invoke RESTART
509 instances with a test-function (reported by Vivitron in #sbcl)
510 * bug fix: STREAM-ERROR-POSITION-INFO fails in fewer situations (lp#1264902)
511 * bug fix: Change COND error message (lp#1254511)
512 * bug fix: LOAD is no longer confused when called on a directory.
514 * bug fix: MAKE-CONDITION reports names of missing condition classes
515 properly (lp#1199223)
516 * bug fix: restore building with clang. (lp#1293643)
517 * bug fix: restore building on SPARC (broken since 1.1.15).
518 * bug fix: improved FreeBSD support.
519 * bug fix: PPC floating point conversion corrupted stack.
521 changes in sbcl-1.1.16 relative to sbcl-1.1.15:
522 * minor incompatible change: improve read/print consistency for pathnames on
523 Win32, by using the circumflex character #\^ as the escape character.
525 * enhancement: SB-EXT:DEFINE-LOAD-TIME-GLOBAL. (lp#1253688)
526 * enhancement: Loading fasls with symbols from an undefined package includes
527 the name of the symbol in the error message.
528 * bug fix: problems when redefining classes and doing TYPEP on classes
529 concurrently. (lp#1272742)
530 * bug fixes to the x86-64 XCHG instruction:
531 ** it was misencoded when used with RAX, R8-R15 registers. (reported by
533 ** it was misencoded when used to exchange EAX with itself.
534 ** the disassembler wrongly printed XCHG RAX, R8 and the corresponding
535 32- and 16-bit variations as NOP.
536 * bug fix: the disassembler outputs source annotations in the right place
537 and no longer randomly drops some of them. (lp#1249205)
538 * bug fix: fix commutative-arg-swap from introducing undumpable structures
539 into code, prevent code with errors from being compiled. (lp#1276282)
540 * bug fix: pathnames with :back in their directory component are succeffully
542 * bug fix: the deterministic profiler now uses ENCAPSULATE functionality to
543 wrap functions around. (lp#309086)
545 changes in sbcl-1.1.15 relative to sbcl-1.1.14:
546 * new feature: the iterative spilling/coloring register allocator developed
547 by Alexandra Barchunova during Google Summer of Code 2013 is now merged
548 in. By default, it only activates for functions that optimize with
549 (speed 3) and (> speed compilation-speed), but setting
550 sb-regalloc:*register-allocation-method* to :iterative forces its
551 execution. The previous behaviour can be obtained by instead setting that
552 variable to :greedy. Thanks again to Google for their support, and, more
553 crucially, to Alexandra Barchunova for her hard work.
554 * optimization: make-array with known element-type and unknown dimensions is
556 * optimization: make-array with unknown element-type is faster as well.
558 * enhancement: sb-ext:save-lisp-and-die on Windows now accepts
559 :application-type argument, which can be :console or :gui. :gui allows
560 having GUI applications without an automatically appearing console window.
561 * enhancement: reduced conservativism on GENCGC platforms:
562 conservative roots must be valid-looking tagged pointers or point
563 within a code object, not merely point to within the allocated part
564 of a page, in order to pin a page.
565 * enhancement: support for "Mac Roman" external format.
566 * enhancement: encapsulation of named generic functions now happens without
567 altering the identity of the function bound to the name.
568 * bug fix: Windows applications without the console window no longer misbehave.
569 (patch by Wilfredo Velazquez, lp#1256034).
570 * bug fix: modular arithmetic optimizations do not stumble on dead branches
571 with bad constants. (reported by Douglas Katzman)
572 * bug fix: CLISP can be used again as a cross-compilation host.
573 (Thanks to Vasily Postnicov, lp#1261451)
574 * bug fix: run-program crashed with :directory nil. (lp#1265077)
576 changes in sbcl-1.1.14 relative to sbcl-1.1.13:
577 * optimization: complicated TYPEP tests are less opaque to the type
578 propagation pass. (lp#1229340)
579 * optimization: [N]BUTLAST perform a single pass over the list. (lp#1245697)
580 * optimization: EQUALP on structures with raw slots (double-float/complex)
581 no longer conses and is faster.
582 * optimization: RESTART-CASE expands to more compact code.
583 Thanks to Jan Moringen. (lp#1249055)
584 * enhancement: Top-level defmethod without defgeneric no longer causes
585 undefined-function warnings in subsequent forms. (lp#503095)
586 * enhancement: Better error messages for system errors on Windows.
587 * enhancement: run-sbcl.sh is usefully handled by rlwrap. Thanks to William
588 Cushing. (lp#1249183)
589 * enhancement: new function SB-EXT:ASSERT-VERSION->= accepts a version
590 specification (multiple integer arguments) and signals a continuable error
591 if the current SBCL version is lower (older) than the specification.
593 * enhancement: better ARRAY-RANK result derivation. (lp#1252108)
594 * bug fix: EQUALP now compares correctly structures with raw slots larger
596 * bug fix: contribs couldn't be built on Windows with MinGW.
597 * bug fix: Better pathname handling on Windows. (lp#922117)
598 * bug fix: OPEN reports a more meaningful error when an existing file is
599 opened for output with :if-exists :new-version. Thanks to Philip
600 Munksgaard. (lp#455381)
601 * bug fix: DEFSTRUCTs with NIL as a slot name no longer cause strange
602 CLOS-related errors. (lp#633911)
603 * bug fix: GC deadlocks caused by concurrent consing on Windows.
605 changes in sbcl-1.1.13 relative to sbcl-1.1.12:
606 * optimization: better distribution of SXHASH over small conses of related
608 * other improvements to SXHASH:
609 ** use the whole of the positive-fixnum range for SXHASH of fixnums
610 * enhancement: The error message when calling an undefined alien function
611 includes the name of the function on x86-64.
612 * enhancement: sb-ext:run-program now supports :environment on Windows.
613 * enhancement: ASDF is no longer required to load contribs at runtime.
615 * enhancement: when called with a symbol, FIND-RESTART no longer calls
616 COMPUTE-RESTARTS, making it faster and cons less (lp#769615)
617 * enhancement: FIND-RESTART and COMPUTE-RESTARTS handle huge restart
618 clusters better in some cases
619 * enhancement: SOME/ANY/other quantification higher-order functions no
620 longer cons. (lp#1070635)
621 * bug fix: forward references to classes in fasls can now be loaded.
623 * bug fix: don't warn on a interpreted->compiled function redefinition
624 from the same location. (patch by Douglas Katzman, lp#1042405)
625 * bug fix: Create vectors of proper internal length when reading literal
626 vectors from FASLs. (Reported by Jan Moringen)
627 * bug fix: COMPILE can now successfully compile setf functions.
628 (Reported by Douglas Katzman)
629 * bug fix: run-program performs more correct escaping of arguments on
630 Windows. (lp#1239242)
631 * bug fix: function-lambda-expression on generic functions returns the
633 * bug fix: (the [type] [constant]) now warns when [constant] matches
634 [type] except for the number of values. (Reported by Nathan Trapuzzano
636 * bug fix: signal errors in required cases of slot-definition initialization
637 protocol. (lp#309072)
638 * bug fix: run-sbcl.sh works better in the presence of symlinks on OS X.
639 (thanks to Stelian Ionescu, lp#1242643)
640 * bug fix: when given a restart object, FIND-RESTART checks whether the
641 restart is active and, when a condition is supplied, whether the restart
642 is associated to a different condition (lp#774410)
644 changes in sbcl-1.1.12 relative to sbcl-1.1.11:
645 * enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
646 shutdown(3). (thanks to Jan Moringen, lp#1207483)
647 * enhancement: document extensible sequences. (thanks to Jan Moringen,
649 * optimization: EQUAL and EQUALP transforms are smarter.
650 (thanks to Elias Martenson, lp#1220084)
651 * optimization: CHAR-EQUAL is faster for constant and base-char arguments.
652 * bug fix: probe-file now can access symlinks to pipes and sockets in
653 /proc/pid/fd on Linux. (reported by Eric Schulte)
654 * bug fix: SBCL can now be built on Solaris x86-64.
655 * bug fix: Floating point exceptions do not persist on Solaris anymore.
656 * bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
657 * bug fix: handle compiler-error in LOAD when it's not run from inside EVAL.
659 * bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base.
660 (thanks to Stephan Frank)
661 * bug fix: space allocation of result bignums in SB-GMP is more accurate.
662 (thanks to Stephan Frank, lp#1206191)
663 * bug fix: sb-safepoint can now reliably handle signal interruptions of
664 foreign code. (lp#1133018)
665 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
666 constructors no longer fails to merge actual and default initargs
667 (thanks to Jan Moringen, lp#1179858)
668 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
669 constructors handles non-KEYWORD initialization arguments more correctly.
670 * bug fix: loading the SB-SIMPLE-STREAMS contributed module no longer
671 clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, lp#884603)
672 * bug fix: class definitions with CPLs inconsistent with their metaclasses
673 are less likely to destroy the object system's integrity. (lp#309076)
674 * bug fix: restart clause parsing in RESTART-CASE is more in line with the
675 standard. (lp#1203585, thanks to Jan Moringen)
676 * bug fix: silence a note from RESTART-CASE under high-SPEED optimization
677 settings. (lp#1023721)
678 * bug fix: getting the order of arguments to
679 SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error
680 rather than a failed AVER. (reported by Paul Nathan)
681 * bug fix: Parsing of &optional/&key/&rest arguments now never overwrites
682 arguments during copying on x86 and x86-64; it may still happen on other
683 platforms when there are more fixed arguments than stack slots.
684 (reported by Jan Moringen)
686 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
687 * enhancement: support building the manual under texinfo version 5.
689 * enhancement: Windows builds no longer display the "Kitten of Death" message.
690 A warning is instead appended to the regular banner, and may be muted with
691 --noinform. (lp#728247)
692 * enhancement: support building under new linker handling of syscalls under
693 NetBSD. (thanks to Robert Swindells)
694 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
695 (regression since 1.1.9)
696 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
697 compiler macro. (thanks to Douglas Katzman).
698 * bug fix: signal a warning when defining a setf-function when a
699 setf-expander is already present. (thanks to Douglas Katzman).
700 * bug fix: improved threading on PPC.
701 * bug fix: ROOM works again on Windows. (lp#1206456)
702 * bug fix: Streams were flushed even when there was one byte still left in
703 the buffer. (lp#910213)
704 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
705 either NIL or :ERROR. (reported by Jan Moringen)
707 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
708 * enhancement: ASDF has been updated to 3.0.2.
709 * optimization: stack frames are packed more efficiently on x86oids, which
710 ought to reduce the frequency of Methuselahn conservative references (it
711 certainly helps with gc.impure.lisp / BUG-936304 on x86).
712 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
713 recognized in modular arithmetic contexts, and compile to native negate,
714 rather than going through bignums only to keep the low bits.
715 * bug fix: Compiling potential modularic arithmetic forms does not cause type
716 errors when some integer types lack lower or upper bounds. (lp#1199127)
717 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
718 bitwidth before being used in a non-modular context. (lp#1199428)
719 * bug fix: Multiple catch/unwind blocks in a single function are now
720 allocated in the right stack order on win32. (lp#1072739)
722 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
723 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
724 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
725 * enhancement: disassemble now annotates some previously missing static
726 functions, like LENGTH.
727 * enhancement: clean.sh now also cleans doc/internals.
728 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
729 print a symbol with a package prefix.
730 * enhancement: The debugger and backtracing are more robust against buggy
731 PRINT-OBJECT methods.
732 * optimization: calls to static functions on x86-64 use less instructions.
733 * optimization: compute encode-universal-time at compile time when possible.
734 * optimization: when referencing internal functions as #'x, don't go through
735 an indirect fdefn structure.
736 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
737 * optimization: (mod fixnum) type-checks are performed using one unsigned
738 comparison, instead of two.
739 * optimization: enable more modular arithmetic transforms in the presence of
741 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
742 when the result is known to be negative.
743 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
744 * optimization: comparisons between rationals and constant floats or between
745 integers and constant ratios are now converted to rationals/integers at
747 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
748 * bug fix: problems with NCONC type derivation (reported by Jerry James).
749 * bug fix: EXPT type derivation no longer constructs bogus floating-point
750 types. (reported by Vsevolod Dyomkin)
751 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
752 addrinfo. (lp#1187041, patch by Jerry James)
753 * bug fix: uninitialized type-error conditions can now be printed.
755 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
756 listening, allowing several tests to run in parallel.
757 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
758 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
760 * bug fix: Specialised SIMD-PACK types can be negated.
761 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
762 reported by Eric Marsden)
763 * bug fix: FP return values from foreign calls are always rounded to single
764 or double float precision on x87.
765 * bug fix: Known-safe vector access on x86oids should not fail spuriously
766 when the index is of the form (+ x constant-positive-integer).
767 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
768 * bug fix: backtrace printer no longer tries to create very large lists when
769 the arg-count register is clobberred by other code. (lp#1192929)
770 * bug fix: x86 should never signal an FP exception while boxing an FP value,
771 a situation that lands us into ldb.
773 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
774 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
775 ROOM, plus a few SB-INTROSPECT functions) has been completely
776 rewritten; it may now exhibit different bugs than before.
777 * new feature: minimal runtime/compiler intrastructure support for SSE
778 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
779 feature :sb-simd-pack. This should enable intrinsics extensions as
780 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
781 for maintaining a branch for so long.
782 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
783 the working directory of the spawned process.
784 (lp#791800) (patch by Matthias Benkard)
785 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
786 stack-allocated on PPC.
787 * enhancement: "fixed objects" can now be stack-allocated on PPC.
788 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
789 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
790 also returns VOPs which do not translate any functions, and finds
791 defoptimizer types ir2convert and stack-allocate-result.
792 * enhancement: better type derivation for APPEND, NCONC, LIST.
794 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
795 heap in a manner similar to the GC rather than its previous ad-hoc
796 scheme, and is therefore no less and possibly more accurate.
797 * fixes and enhancements related to Unicode:
798 ** the character database information has been updated to Unicode 6.2;
799 ** support for canonical and compatibility decomposition of characters has
800 been added, along with support for primary composition;
801 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
802 NFKD) has been included;
803 ** querying the character database for code points not defined by Unicode
804 gives less wrong answers (lp#1178038, reported by Ken Harris)
805 * enhancement: print intermediate evaluation results for some ASSERTed
806 expressions. (lp#789497) (patch by Alexandra Barchunova)
807 * enhancement: x86-64 disassemblies are annotated with unboxed constant
808 values when there are references to (RIP-relative) unboxed constants.
809 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
810 of quadratically with the size of the input in the worst case.
812 * bug fix: handle errors when initializing *default-pathname-defaults*,
813 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
814 decoding errors, or directories being deleted.
815 * bug fix: Loading a core with a discontiguous dynamic space now correctly
816 computes the amount of dynamic space used.
817 * bug fix: disassembler missing ",8" on SHLD
818 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
819 that provide an "invalid" stack frame link for the signal handler
820 itself now use the saved-fp-and-pc mechanism to pick up from the stack
821 frame in the interrupt (signal) context. This is known to affect
822 threaded FreeBSD/x86-64.
823 * bug fix: some LOOP statements couldn't be compiled.
825 * bug fix: sb-sequence:dosequence works on literal vectors.
826 * bug fix: errors in generic arithmetic show the assembly routine's
827 caller on x86 and x86-64. (lp#800343)
828 * bug fix: Compile-time type errors should never result in COMPILE-FILE
830 * bug fix: Known bad local calls do not cause strange failures when
831 emitting or dumping code. (lp#504121)
832 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
833 codegen errors: type checks are inserted as necessary. (lp#1177703)
834 * bug fix: Unsigned modular arithmetic is correctly converted into signed
835 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
836 * bug fix: a combination of inlined local function with &optional and
837 recursion no longer causes undescriptive compiler errors. (lp#1180992)
838 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
839 when testing for non-zero-ness.
840 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
842 * bug fix: Type mismatch for the value of conditional expressions are
843 correctly reported when detected at compile-time, instead of complaining
844 about a constant NIL (similar for non-EQ-comparable catch tags).
845 * bug fix: Referring to INLINE global functions as values should not result
846 in a compilation failure. (lp#1035721)
847 * optimization: faster ISQRT on fixnums and small bignums
848 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
849 * optimization: On x86-64, the number of multi-byte NOP instructions used
850 for code alignment is now always minimal.
851 * optimization: On 64-bit targets, the compiler generates much faster
852 code for type checks for types known at compile time that are smaller
853 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
854 their COMPLEX variants.
855 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
856 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
857 * optimization: ROOM no longer conses so egregiously on non-x86oid
859 * optimization: associative bitwise operations reassociate patterns like
860 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
862 * optimization: quasiquote expressions now perform more constant folding,
863 instead of consing equal lists at runtime. (lp#1026439)
864 * optimization: local call analysis of inlined higher-order function
865 should converge more quickly, resulting in better code for complex
867 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
868 integer constants are handled more cleverly, especially when they
869 can be represented as sign-extended (signed-byte 32). (Based on a
870 patch by Douglas Katzman)
871 * optimization: IF/IF conversion should reliably result in sane code
872 when (some of) the results of the inner IF are always false or
874 * optimization: On x86oids, variable right shifts of machine words are
875 compiled into straight SAR/SHR, instead of going through the generic
878 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
879 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
881 * bug fix: :allocation slot option works for condition slots
883 * bug fix: redefining conditions does not lead to multiple evaluations of
884 hairy slot initfunctions anymore (lp#1164969)
885 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
887 * bug fix: function constants now work as initforms and default initarg
888 values of conditions (lp#539517)
889 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
890 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
891 * bug fix: no more bogus ## references when pretty printing backquoted
892 forms with non-trivial structure sharing. (lp#1161218)
893 * bug fix: Don't signal an error on (setf (documentation nil 'function)
894 "doc"). Signal a style-warning instead when trying to set documentation
895 of NIL for all other documentation types. (Reported by Zach
896 Beane; regression since 2e52fa05.)
897 * bug fix: modular arithmetic involving large constants and conditionals
898 should no longer result in spurious dead code elimination. (Reported by
900 * bug fix: our mach exception handler can seemingly called very early in
901 the program execution process on OS X 10.8.0. Try and handle that case
902 robustly, without potentially leaking mach ports too much.
903 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
905 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
906 * enhancement: the continuable error when defknown-ing over extant
907 fndb entries can be ignored by passing :overwrite-fndb-silently t
908 as a keyword argument to sb-c:defknown (after attributes). Useful
909 to allow defknown to be re-loaded. Use with :allow-other-keys t
910 for backward compatibility.
911 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
913 * bug fix: Prevent a make-array transform from modifying source forms
914 causing problems for inlined code. Thanks to Bart Botta.
915 (regression since 1.0.42.11-bis)
916 * bug fix: clear-output calls the correct gray stream routine,
917 sb-gray:stream-clear-output. (lp#1153257)
918 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
920 * bug fix: Better error messages for package operations (lp#1154776)
921 * bug fix: delete-package on a nonexistent package should signal a cerror.
922 (regression since 1.0.37.44).
923 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
924 (lp#1154946, lp#1072112)
925 * bug fix: compiling make-array no longer signals an error when the
926 element-type is an uknown type, a warning is issued instead.
927 Thanks to James Kalenius (lp#1156095)
928 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
929 produces wrong results for some inputs. (Thanks to Jan Moringen.)
932 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
933 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
935 * new feature: package local nicknames. See manual for details.
936 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
937 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
938 * enhancement: easier to use restarts for resolving name-conflicts
939 resulting from IMPORT, EXPORT, or USE-PACKAGE.
940 * enhancement: variant DEFPACKAGE forms now signal a full error with
941 restarts provided for resolving the situation. (lp#891351)
942 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
943 DEFPACKAGE forms can now signal a full error with restarts provided for
944 resolving the situation. See manual for details. (lp#891351)
945 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
946 (Thanks to Anton Kovalenko.) (lp#1102748)
947 * enhancement: backtrace improvements
948 ** secondary CLOS dispatch functions have better debug names (lp#503081)
949 ** easier to read method names in backtraces. See
950 SB-DEBUG:*METHOD-FRAME-STYLE*.
951 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
952 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
953 SB-DEBUG:BACKTRACE-AS-LIST.
954 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
955 information is available in less intrusive form as frame annotations.
956 * enhancement: SB-POSIX now provides MAP-ANON.
957 * enhancement: test-suite results are colorized, failures in red, unexpected
958 success in green. Works on Windows and on terminals with ANSI escape code
959 support. Can be disabled with --no-color.
960 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
961 (thanks to James M. Lawrence)
962 * bug fix: no more unused variable style warnings from RESTART-CASE
963 macroexpansion (lp#1113859)
964 * bug fix: no more unused variable style warnings when loading
965 sb-bsd-sockets.asd (lp#1114681)
966 * bug fix: deleting a package removes it from implementation-package
967 lists of other packages.
968 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
969 This does not fix the occasional "interrupt already pending" issue, though.
970 * bug fix: (setf (documentation 'x 'function)) and
971 (setf (documentation #'x t)) set documentation in different places.
972 (regression since 1.0.43.63)
973 * bug fix: build on newer glibc. (lp#1095036)
975 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
976 * optimization: LOOP expressions using "of-type character" have slightly
977 more efficient expansions.
978 * bug fix: very long (or infinite) constant lists in DOLIST do not result
979 in very long compile times or heap exhaustion anymore. (lp#1095488)
980 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
981 * bug fix: adjust-array ignored :initial-element for simple-vectors.
983 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
984 longer cause infinite loops (on circular data) or violate eqlity
985 constraints. (lp#1099708)
986 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
988 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
989 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
991 * enhancement: support for C-c to interrupt the foreground thread
992 on Windows. (Thanks to Anton Kovalenko.)
993 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
994 * enhancement: Safepoint builds on POSIX platforms can now optionally be
995 built without pseudo-atomic sequences and their run-time overhead.
996 * enhancement: Threads created outside of Lisp can enter Lisp through
997 alien callbacks and appear as Lisp threads for the duration of that
998 function invocation. On safepoint builds only.
999 * enhancement: Miscellaneous improvements to namestrings and underlying
1000 calls to OS functions for file system access on Windows. (Thanks to
1002 * enhancement: The MSI installer support for Windows now uses Windows
1003 Installer XML at least version 3.5 and includes various usability
1004 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
1005 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
1006 on Windows. (Thanks to Anton Kovalenko.)
1007 * enhancement: The Windows backend now supports the x86-64 platform.
1008 (Thanks to Anton Kovalenko.)
1009 * bug fix: fasls are now once again directly executable (on platforms
1010 supporting shebang lines, with a suitably-installed sbcl).
1011 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
1012 * bug fix: Fix CAS access to slots of direct instances of structure classes
1013 in the presence of subclasses sharing the same conc-name.
1014 * bug fix: Logical pathname namestrings on Windows have been changed to
1015 be lower-case, to minimize differences between POSIX and Windows.
1017 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
1018 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
1019 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
1020 (NT 5.0) is no longer being maintained.
1021 * notice: Starting with this version, SBCL on Windows no longer supports
1022 building with disabled thread support.
1023 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
1024 * enhancement: New feature sb-dynamic-core allows the runtime to be
1025 rebuilt or relocated without requiring changes to the core file on
1026 all linkage table platforms. Required on Windows. (Thanks to Anton
1028 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
1029 * enhancement: I/O on Windows unnamed pipes is interruptible
1030 asynchronously using interrupt-thread, timers when running on Windows NT
1031 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
1033 * enhancement: Support for the experimental safepoint-based stop-the-world
1034 protocol on the PowerPC platform.
1035 * bug fix: Non-blocking reads from the Windows console were not necessarily
1036 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
1037 * bug fix: stability of threads on Windows has been improved upon through
1038 an updated stop-the-world protocol (thanks to Anton Kovalenko).
1040 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
1041 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
1042 (COMPILE and COMPILE-FILE still do.)
1043 * optimization: the SPARC backend now supports the precise generational
1044 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
1045 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
1046 * enhancement: add experimental support for the SB-THREAD feature and the
1047 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
1048 Threads are enabled by default, and this version of SBCL is considered
1049 to be the last and final release to officially support building with
1051 * optimization: The compiler no longer rotates loops in some cases where
1052 this transformation actually lead to worse code being generated.
1053 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
1054 symbol-macros by lexical bindings.
1055 * bug fix: stack allocation was prevented by high DEBUG declaration in
1057 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
1058 (thanks to SANO Masatoshi)
1059 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
1060 :JUNK-ALLOWED was true.
1061 * bug fix: type derivation inferred overly conservative types for
1062 unions of array types. (lp#1050768)
1064 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
1065 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
1066 source annotation of DISASSEMBLE output. Defaults to T.
1067 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
1068 WAIT-P argument added to WITH-RECURSIVE-LOCK.
1069 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
1071 * enhancement: Optional features (not enabled by default) allow the
1072 use of signals for inter-thread synchronization to be reduced on certain
1073 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
1074 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
1075 to test these experimental features. Known remaining bugs include minor
1076 thread safety issues, less timely freeing of memory by GC, and certain
1077 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
1078 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
1079 comparisons, particularly on almost-sorted inputs.
1080 * bug fix: Reading floats with large exponents no longer takes too much time
1081 before reporting that the exponent is too large.
1082 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
1083 correctly when the received datagram is larger than the provided buffer.
1084 (lp#1023438, thanks to Robert Uhl)
1085 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
1086 a SYMBOL-VALUE form with a constant symbol argument.
1087 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
1088 into a DEFCAS defined place was used as the place.
1089 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
1090 for from bit-vectors.
1091 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
1092 lead to internal errors or crashes (lp#1058799).
1093 * documentation: a section on random number generation has been added to the
1096 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
1097 * enhancement: implicit generic function warnings now specify the package
1098 in which the new generic function is being created.
1099 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
1100 updates of CAS-able places (similar to Clojure's swap!).
1101 * enhancement: run-program no longer decodes and re-encodes environment when
1102 :environment argument is not provided. (lp#985904)
1103 * enhancement: errors during compiler-macro expansion no longer cause
1104 runtime errors, only a compile-time warning, otherwise behaving as if
1105 the compiler macro had declined to expand.
1106 * optimization: On x86-64, code alignment of block headers is done with
1107 multi-byte NOPs now instead of repetitions of the single-byte NOP.
1108 * optimization: MAP-INTO is substantially faster when the target sequence is
1109 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
1110 thanks to James M. Lawrence)
1111 * optimization: the compiler no longer heap-conses to check exits in cases
1112 where the exit function is dynamic extent, or when it can prove the exit
1113 function cannot escape. (lp#1002534)
1114 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
1115 element type, and vectors that aren't SIMPLE-ARRAYs.
1116 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
1117 speed (around 1/3 the time in some cases), and a little better in terms of
1118 comparison calls. (Thanks to Takeru Ohta)
1119 * bug fix: On SPARC, a limitation on the number of code constants emittable
1120 by the compiler has been lifted, allowing certain long functions to
1121 compiled and assembled which had previously been unsupported; fixes
1122 cl-bench on this ISA (lp#1008996).
1123 * bug fix: potential for infinite recursion during compilation of CLOS slot
1124 typechecks when dependency graph had loops. (lp#1001799)
1125 * bug fix: error forms reported with some program-errors were not escaped
1127 * bug fix: functions from EVAL are now on more equal footing with functions
1128 from COMPILE. (lp#1000783, lp#851170, lp#922408)
1129 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
1130 objects as its :METHOD-COMBINATION argument, not just lists designating
1131 method combinations. (lp#936513)
1132 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
1134 * bug fix: restore build on solaris/sparc. (lp#1008506)
1135 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
1136 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
1137 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
1138 as keyword arguments no longer accidentally match unevaluated symbols
1140 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
1141 parameter was zero, now it signals an error. (lp#905817, fixed since
1143 * bug fix: run-program with :pty t no longer makes the pty as the process's
1144 controling terminal.
1145 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
1148 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
1149 * RANDOM enhancements and bug fixes:
1150 ** bug fix: the range and distribution of random integers could be
1151 catastrophically wrong when the compiler derived the type of its
1152 argument as a disjoint set of small integers.
1153 ** bug fix: the distribution of random integers is now completely
1154 uniform even when the specified limit is not a power of two.
1155 (Previously some values could be about 0.1 % more probable than
1156 others in the worst case.) (lp#309467)
1157 ** RANDOM on large integer arguments is generally faster and conses
1158 less than before; this is visible for fixnums above a length of
1159 about 24 bits, but extremely so for bignums: the old implementation
1160 used time and space quadratical in the size of the argument there,
1161 the new one is linear.
1162 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
1163 main entry point, SB-EXT:QUIT is deprecated.
1164 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
1165 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
1166 * enhancement: FASL loading no longer grabs the world-lock.
1167 * enhancement: GENCGC reclaims space more aggressively when objects being
1168 allocated are a large fraction of the total available heap space.
1170 * enhancement: backtraces show the correct number of arguments for frames
1171 called with too many arguments.
1172 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
1174 * enhancement: ASDF has been updated 2.21.
1175 * optimization: fewer uses of full calls to signed modular functions.
1177 * optimization: typechecking alien values is typically 5 x faster.
1178 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
1180 * bug fix: file compilation performance issues when dumping subtypes
1181 of CHARACTER (lp#994487)
1182 * bug fix: fixed disassembly of some SSE instructions on x86-64.
1183 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
1184 OPEN. (lp#969352, thanks to Kambiz Darabi)
1185 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
1187 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
1188 classoid even if X was not the proper name of the class. (lp#941102)
1189 * bug fix: declaration leakage between lexical environments due to careless
1190 use of NCONC in MAKE-LEXENV. (lp#924276)
1191 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
1192 *default-pathname-defaults* contains NAME or TYPE components.
1193 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
1194 from CL package, e.g. (loop . 10).
1195 * bug fix: run-program with existent or non-existent files for :output or
1196 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
1197 returns NIL instead of signalling an obscure error.
1198 * bug fix: fix miscompilation of some logand forms with large constant
1199 arguments. (lp#974406)
1200 * bug fix: account for funcallable-instance objects properly in ROOM.
1201 * bug fix: incorrect octets reported for c-string decoding errors.
1203 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
1205 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
1206 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
1207 allowing faster release of memory back to the OS. (lp#991293)
1208 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
1209 existing deadline for the dynamic scope of its body.
1210 * bug fix: compiler-internal interval arithmetic needed to be more
1211 conservative about open intervals when operated on by monotonic but not
1212 strictly-monotonic functions. (lp#975528)
1213 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
1214 it's also slightly faster. (lp#998926)
1215 * bug fix: better error messages for malformed declarations.
1217 * bug fix: define-condition didn't return the name of the defined condition.
1219 ** improved docstrings: REPLACE (lp#965592)
1221 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
1222 * bug fix: fix copy-structure. When copying from stack to heap, garbage
1223 could end up in the heap making GC unhappy.
1224 (Thanks to James Knight, lp#911027)
1226 ** SBCL can now be built using Clang.
1227 ** ASDF has been updated 2.20.
1228 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
1229 * bug fix: don't complain about a too-hairy lexical environment for inlining
1230 when the function has never been requested for inlining. (lp#963530)
1232 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
1233 * enhancements to building SBCL using make.sh:
1234 ** --fancy can be specified to enable all supported feature enhancements.
1235 ** --with-<feature> and --without-<feature> can be used to specify
1236 which features to build with.
1237 ** --arch option can be used to specify the architecture to build for.
1238 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
1239 full-blows cross-compilation.)
1240 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
1241 which allows specifying name of the default interning package for the
1243 * enhancement: when *READ-EVAL* is true, arrays with element type other than
1244 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
1245 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
1246 null alien when malloc() fails. (lp#891268)
1247 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
1248 conditions can be conveniently accessed through function with the same
1249 name, analogously to CONTINUE.
1250 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
1251 from the printer by type, causing an error marker to be printed instead.
1252 (Thanks to Attila Lendvai)
1253 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
1254 generally behave better when errors occur during printing.
1255 * enhancement: the test runner now takes a --report-skipped-tests argument
1256 to report the individual tests skipped as well as the number of skipped
1258 * enhancement: undefined functions now appear in backtraces as ("undefined
1259 function") instead of ("bogus stack frame") on x86oids.
1260 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
1261 deadlock errors are reported in an easier-to-decipher manner.
1262 * enhancement: DESCRIBE on type designators reports the expansion in more
1264 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
1265 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
1266 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
1267 * enhancement: better disassembly of segment-prefixes on x86 and other
1268 instruction prefixes (e.g. LOCK) on x86 and x86-64.
1269 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
1270 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
1271 * optimization: SUBSEQ on vectors of unknown element type is substantially
1273 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
1274 be stack-allocated. (lp#902351)
1275 * optimization: the compiler is smarter about representation selection for
1276 floating point constants used in full calls.
1277 * optimization: the compiler no longer refuses to coerce large fixnums to
1278 single floats inline, except on x86 where this limitation is still
1280 * optimization: truncation operations on integers with constant divisor
1281 arguments 1 and -1 are optimized away.
1282 * bug fix: deadlock detection could report the same deadlock twice, for
1283 two different threads. Now a single deadlock is reported exactly once.
1284 * bug fix: interval-arithmetic division during type derivation did not
1285 account for signed zeros.
1286 * bug fix: compiler error when typechecking a call to a function with
1287 non-constant keyword arguments.
1288 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
1289 * bug fix: condition slot accessors no longer cause undefined function
1290 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
1291 form that defines them. (lp#896379)
1292 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
1293 by ANSI. (lp#894202)
1294 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
1295 bogusly report NIL, T.
1296 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
1297 required arguments ignored and performed assignments to others.
1299 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
1300 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
1301 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
1302 * bug fix: redefining a function whose previous definition contained an
1303 unknown type no longer causes a style-warning. (lp#806243)
1304 * bug fix: undefined functions now appear in backtraces as ("undefined
1305 function") instead of ("bogus stack frame") on non-x86oids.
1306 * bug fix: backtraces are no longer cut off at ("undefined function") when
1307 called under certain circumstances (involving a caller-allocated stack
1309 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
1310 systems. (regression since 1.0.53)
1311 * bug fix: GC deadlocks from dladdr() on certain platforms.
1312 * bug fix: broken standard streams no longer automatically cause recursive
1313 errors on debugger entry.
1314 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
1315 (regression since 1.0.53)
1316 * bug fix: attempts to stack allocate a required argument to a function with
1317 an external entry point caused compiler-errors.
1318 * bug fix: compiler notes for failed stack allocation for a function argument
1319 no longer claim to be unable to stack allocate the function.
1320 * bug fix: COERCE now signals a type-error on several coercions to
1321 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
1322 * bug fix: missing failure-to-stack-allocate compiler notes for some
1323 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
1324 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
1326 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
1328 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
1329 * minor incompatible changes:
1330 ** RENAME-FILE on a symbolic links used to rename the linked-to file
1331 instead of the link.
1332 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
1333 directory, but now signal an error instead. Use TRUENAME to resolve the
1334 pathname if you wish to delete the linked directory, and DELETE-FILE if
1335 you wish to delete the
1336 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
1337 symbols associated with it will trigger a compile-time warning.
1338 * thread-related enhancements:
1339 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
1340 Many thanks to generous donors!)
1341 ** Threading is now more reliable on non-Linux platforms. We still don't
1342 consider threads on non-Linux platforms good enough to enable them by
1343 default, but they're in a clearly better shape now.
1344 ** Deadlines supported now on all platforms.
1345 ** All blocking functions in the threading API now have a :TIMEOUT
1347 ** Semaphore notification objects have been added to SB-THREAD.
1348 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
1349 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
1350 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1351 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
1352 using an API anologous to defining new SETFable places.
1353 * GC-related enhancements and bug fixes:
1354 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
1355 and Gb suffixes. Default is megabytes as before.
1356 ** on GENCGC targets, the default dynamic space size is now 512Mb for
1357 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
1358 exception, defaulting to mere 444Mb to fit under default ulimits.) The
1359 new defaults are in place to prevent hitting swap on low-end systems.
1360 Use build-time option --dynamic-space-size to build an SBCL with
1361 another default, or the runtime option to adjust the size at startup: a
1362 good size is at most equal to the amount of physical memory the system
1364 ** on GENCGC targets, nursery and generation sizes now default to 5% of
1366 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
1367 refuses to create SIMPLE-FUN objects.
1368 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
1370 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
1371 validation of pointer objects as GENCGC does, instead of a
1372 comparatively weak bounds-check against the heap spaces.
1373 * SB-BSD-SOCKETS bug fixes:
1374 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
1375 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
1376 systems with getaddrinfo().
1377 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
1378 safe outside systems with getaddrinfo().
1379 * enhancement: ASDF has been updated 2.019.
1380 * enhancement: special-case TCO prevention for functions which never return
1381 extended to untrusted types, keeping one more frame's worth of debug
1382 information around in many cases.
1383 * enhancement: debug-names of anonymous and local function are more
1384 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
1385 * enhancement: on win32, ABS of complex floats guards better against
1386 overflows. (lp#888410)
1387 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
1388 process exiting with code 1. (lp#676987)
1389 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
1390 the system where on the filesystem the SBCL sources themselves are
1391 located. (Thanks to Zach Beane)
1392 * enhancement: the compiler is now able to derive tighter bounds for
1393 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
1394 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
1395 correctly, even on wide-fixnum builds. (lp#887220)
1396 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
1397 resolved to directories.
1398 * bug fix: type mismatch when assigning to lexical variables no longer
1399 result in fasl-dumping internal type objects. (lp#890750)
1400 * bug fix: type mismatch on (SETF AREF) and function return values no
1401 longer result in fasl-dumping internal type objects.
1402 * bug fix: With several combinations of argument types, for example (EXPT
1403 <integer> <(complex double)>), EXPT now uses double-precision throughout
1404 instead of partially calculating only to single-precision. (lp#741564;
1405 thanks to Lutz Euler)
1406 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
1407 objects when interrupted by GC on PPC.
1409 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
1410 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
1411 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
1412 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
1413 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
1414 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
1415 targets is now 63 bits (up from 61).
1416 * enhancement: DESCRIBE now reports a lambda-list and source location
1417 for complext setf-expanders.
1418 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
1419 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
1420 of multiple-valued places to be set to NIL, instead of signalling an
1421 error (per a careful reading of CLHS 5.1.2.3).
1422 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
1423 * bug fix: repair crash in x86oid darwin signal handling emulation
1424 when built with certain compilers.
1425 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
1426 rotation arguments on x86-64. (lp#882151)
1427 * bug fix: low-level control flow optimisations could result in bogus
1428 code in functions with tail and non-tail calls to local functions on
1429 x86oids. (lp#883500)
1430 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
1431 to emit literal characters > (code-char 4095), for comparisons with
1432 constant characters.
1433 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
1434 on 64 bit platforms. (lp#881445)
1435 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
1436 delete the wrong file when using relative pathnames. (lp#882877)
1437 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
1438 sequences and :KEY NIL.
1440 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
1441 * enhancement: ASDF has been updated to version 2.017.
1442 * enhancement: the --core command line option now accepts binaries with
1444 * enhancement: when built with :sb-core-compression, core files (regular
1445 or executable) can be compressed with zlib. Use the :COMPRESSION
1446 argument to SAVE-LISP-AND-DIE to specify a compression level.
1447 * enhancement: --[no-]merge-core-pages determines whether the runtime
1448 hints the operating system that identical core pages between SBCL
1449 processes should share the same physical memory. Default is to only
1450 enable this for compressed cores.
1451 * optimization: SLEEP no longer conses.
1452 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
1453 or bit-vectors when using the standard pretty-print dispatch table.
1454 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
1456 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
1457 AREF, CHAR, etc. (lp#826971)
1458 * bug fix: compiler-errors causes by integer arguments with composed of
1459 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
1460 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
1461 expressions. (lp#770184)
1462 * bug fix: complex single float literals are correctly aligned when used
1463 as arguments of arithmetic operators.
1464 * bug fix: on 32-bit platforms, rounding of double floats larger than a
1465 fixnum is correct. (reported by Peter Keller)
1466 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
1467 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
1469 * bug fix: redefining classes such that slots with custom allocation are
1470 added or removed works again.
1472 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
1473 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
1474 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
1475 MAKE-SOCKET-STREAM if using SERVE-EVENT.
1476 * enhancement: added support for socket keepalive timeout intervals
1477 and probe counts on Linux.
1478 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
1479 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
1480 * enhancement: added new toplevel options --quit and --non-interactive
1482 * enhancement: the Windows port of SBCL now builds and runs on Wine
1483 (thanks to Anton Kovalenko).
1484 * enhancement: more, and more correct, SSE instruction definitions on
1485 x86-64 (thanks to Alexander Gavrilov).
1486 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
1487 to help the processor execute spin loops, when applicable. Currently
1488 implemented for x86 and x86-64.
1489 * optimization: unsigned integer divisions by a constant are implemented
1490 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
1491 * optimization: improved type-derivation for LOAD-TIME-VALUE.
1492 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
1493 instructions. (lp#814688)
1494 * bug fix: COERCE to unfinalized extended sequence classes now works.
1495 (reported by Jan Moringen; lp#815155)
1496 * bug fix: a compiler error during typecheck generation, reported by Eric
1497 Marsden. (lp#816564)
1498 * bug fix: obsolete instance protocol fires when shared slots are added
1500 * bug fix: fixed-format floating point printing with scaling factors.
1502 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
1503 backtraces. (lp#818460)
1504 * bug fix: better backtraces for interrupted syscall frames on x86.
1506 * bug fix: SSE comparison instructions can be disassembled even when one
1507 operand is in memory. (lp#814702)
1508 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
1509 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
1510 type information associated with the VALUES form.
1511 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
1513 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
1514 first write (lp#561642).
1515 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
1516 * bug fix: bound propagation involving conversion of large bignums to
1517 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
1519 * bug fix: &REST to &MORE conversion still works in unsafe call to known
1520 functions; reported by Lutz Euler (lp#826459).
1521 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
1524 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
1525 * enhancement: errors from FD handlers now provide a restart to remove
1526 the offending handler.
1527 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
1529 * enhancement: location of user or system initialization file can now easily
1530 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
1531 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
1532 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
1533 the thunk, as a keyword argument, :arguments.
1534 * enhancement: constraint propagation is simplified (and sped up) when
1535 COMPILATION-SPEED > SPEED.
1536 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
1537 * enhancement: debugger understands &MORE arguments better.
1538 * optimization: extracting bits of a single-float on x86-64 has been
1539 optimized. (lp#555201)
1540 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
1541 when (> SPEED SPACE).
1542 * optimization: local call trampolines (x86 and x86-64) are emitted
1544 * optimization: implicit value cells for dynamic-extent closed-over bindings
1545 on x86 and x86-64 can hold unboxed values as well.
1546 * meta-optimization: improved compilation speed, especially for large
1547 functions. (lp#792363 and lp#394206)
1548 * bug fix: bound derivation for floating point operations is now more
1549 careful about rounding possibly closing open bounds. (lp#793771)
1550 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
1551 backwards incompatible change in 1.0.48.27)
1552 * bug fix: occasional debugger errors in when a type-error occured in a
1553 function with dynamic-extent &rest list.
1554 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
1555 boa-construtors can be used to initialized structure slots.
1556 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
1557 (lp#795705, regression)
1558 * bug fix: DIRECTORY works better on logical pathnames.
1559 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
1560 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
1561 * bug fix: the compiler no longer constant-folds NaNs in
1562 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
1563 * bug fix: FORMAT now handles floating point rounding correct, eg.
1564 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
1566 * bug fix: style warning during lambda-list introspection of generic
1567 functions with both optional and key argments.
1568 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
1569 folding. (lp#729765)
1570 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
1573 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
1574 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
1575 interrupts for its body.
1576 * enhancement: source locations are now available for files loaded as
1577 source, compile-time-too evaluation, and initialization files.
1578 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
1579 virtual source-file information, eg. overriding input-file of COMPILE-FILE
1580 when a temporary file is used for compilation.
1581 * enhancement: ASDF has been updated to version 2.015.3.
1582 * enhancement: backtraces involving frames from the default evaluator are
1584 * enhancement: RUN-PROGRAM works with user-defined binary input and output
1586 * enhancement: more informative compile-time warnings and runtime errors for
1587 type-errors detected at compile-time.
1588 * enhancement: deadlock detection for mutexes and spinlocks.
1589 * enhancement: dynamic-extent for &rest lists stack allocate only their
1590 spines, not their argumets. While portable code should not rely on this,
1591 particularly in combination with inlining, it should make dynamic-extent
1592 easier to use safely.
1593 * enhancement: SB-POSIX improvements:
1594 ** WNOHANG and WUNTRACED are exported.
1595 ** SYSCALL-ERROR now also provides the name of the failing system call.
1596 * enhancement: --script improvements:
1597 ** errors on standard input, output, and error streams are handled and
1598 cause scripts to exit silently, making them easier to use in shell
1600 ** backtraces from scripts now go to standard error instead of the
1601 terminal even if one is available.
1602 ** --script can be an argument, causing the script to be loaded from
1604 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
1605 strings to foreign memory.
1606 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
1607 a file, making it easier to understand heap dynamics.
1608 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
1609 allows the compiler to automatically elide rest-list allocation so long as
1610 the call sites are in functions that the compiler knows cannot escape.
1612 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
1613 especially in safe code when none of the required arguments have changed
1615 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
1616 uninterruptible, as well as blocking reads from socket streams created
1617 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
1618 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
1619 from the to-char if the from-char is not a dispatch-macro character.
1620 * bug fix: references to undefined variables in function calls that are
1621 optimized away now signal a runtime error. (lp#722734)
1622 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
1623 types from a function defined in the same file. (regression from
1625 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
1627 * bug fix: spurious errors during QUIT when standard streams were closed.
1629 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
1630 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
1631 years, is now no longer supported.
1632 * enhancement: read() and write() have been added to SB-POSIX.
1633 * enhancement: types of DEFSTRUCT constructors are proclaimed more
1634 accurately, allowing better typechecking of call-sites.
1635 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
1636 are no longer caught. (reverted to pre 1.0.34 behaviour)
1637 * optimization: slightly faster ISQRT. (lp#713343)
1638 * bug fix: better support for Solaris /bin/sh in sh-based tests.
1639 * bug fix: TRACE behaves better when attempting to trace undefined
1640 functions. (lp#740717)
1641 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
1642 to (FUNCALL #'(LAMBDA ...) ...).
1643 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
1644 a compile-time error. (lp#720382)
1645 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
1647 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
1648 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
1649 optimization. (regression from 1.0.45.18/1.0.46.15)
1650 * bug fix: package locks did not protects against compile-time side-effects
1651 of DEFUN. (lp#675584)
1652 * bug fix: --dynamic-space-size argument is validated more carefully.
1654 * bug fix: memory fault from printing a malformed simple-condition.
1656 * bug fix: redefining classes so that slot-definition classes change now
1657 engages the obsolete instance protocol. (lp#766271)
1658 * bug fix: constant improper lists could break source coverage recording.
1660 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
1661 could exhaust stack.
1663 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
1664 * bug fix: fix mach port rights leaks in mach exception handling code on
1665 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
1667 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
1668 * enhancement: redefinition warnings for macros from different files. (lp#434657)
1669 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
1670 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
1671 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
1672 processed using EVAL -- now the appropriate toplevel form is reported instead.
1673 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
1674 declarations. (lp#726331)
1675 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
1676 that NIL/NULL is excluded from the type.
1677 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
1679 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
1680 and its compatriots.
1681 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
1682 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
1683 stack-allocated values out of their dynamic-extent. (lp#310175)
1684 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
1685 x86-64 builds caused a type-error.
1686 * bug fix: calling COMPILE with something else than a lambda-expression as the
1687 second argument reports a more sensible error. (lp#718905)
1688 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
1689 are detected. (lp#520607)
1690 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
1692 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
1693 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
1694 methods. (regression from 1.0.45.18)
1695 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
1696 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
1697 * bug fix: several foreign functions accepting string also accepted NIL and
1698 consequently caused a memory fault at 0 now signal a type-error instead.
1700 * bug fix: under rare circumstances, constraint propagation could rewrite a
1701 variable reference to refer to a variable not in scope, causing an error
1702 during physical environment analysis when attempting to close over the
1703 variable. (lp#551227)
1704 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
1706 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
1707 * enhancement: largefile support on Solaris.
1708 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
1709 arguments (lp#710017)
1710 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
1711 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
1713 * optimization: ERROR and CERROR are approximately 5 times faster.
1714 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
1715 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
1716 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
1717 up instance creation in those cases.
1718 * optimization: arithmetic operations with multiple constant arguments in now
1719 have them reduced at compile-time. (lp#676414)
1720 * optimization: determining current character position on string-streams for
1721 pretty-printing was overly slow.
1722 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
1723 lifetime analysis to overwrite closed-over variables (lp#681092).
1724 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
1725 were not handled correctly (lp#713063).
1726 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
1728 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
1729 mistake. (lp#667297).
1730 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
1731 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
1732 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
1733 unintern the wrong symbol with the same name. (lp#693796)
1734 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
1735 making it possible to restore the initial table if it has been messed up.
1738 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
1739 * enhancement: ~/ and ~user/ are treated specially in pathnames.
1740 Refer to documentation for details.
1741 * enhancement: ASDF has been updated to version 2.010.
1742 * optimization: mutated closed-over variables that are only accessed by
1743 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
1744 declared to be DYNAMIC-EXTENT) are stored directly in their containing
1745 stack frame, rather than allocating a VALUE-CELL (lp#586103).
1746 * optimization: UNWIND-PROTECT cleanup functions are now declared
1748 * bug fix: backtracing function with &REST arguments now shows the full
1749 argument list. (lp#310173)
1750 * bug fix: return types for functions with complex lambda-lists are now
1751 derived properly (lp#384892)
1752 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
1753 long string arguments slowed the compiler down to a crawl.
1754 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
1755 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
1756 in the DEFMETHOD body.
1757 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
1758 messages, being instead replaced with the corresponding function name.
1759 * bug fix: don't derive overly complex unions of numeric types for arithmetic
1760 operators. (lp#309448)
1762 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
1763 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
1764 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
1765 * enhancement: ALLOCATION-INFORMATION also provides the page the object
1767 * enhancement: default dynamic-space size can be configured at build-time
1768 without touching source, using the --dynamic-space-size argument to make.sh.
1769 * enhancement: DESCRIBE recognizes symbols naming optimization policy
1770 qualities, and mentions ALWAYS-BOUND declarations.
1771 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
1773 * enhancement: ASDF has been updated to 2.009.
1774 * enhancement: the system detects known type-erros in calls better,
1775 signalling a full warning about violated proclaimed FTYPEs and violations
1776 of derived FTYPEs within the same file, including self-calls.
1777 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
1778 * optimization: constant-folding exploits numeric and character types, in
1779 addition member types.
1780 * optimization: numeric, character and member types that are inhabited by
1781 exactly one value are tested with EQL.
1782 * optimization: more conditional branches are eliminated during IR1.
1783 Branches are simplified before performing if/if-conversion, and simple
1784 equivalent branches (that only read the same constant or variable) are
1786 * improvements to the Windows port:
1787 ** change: canonical unparsing form for pathname namestrings now uses / as
1788 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
1789 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
1790 on Windows. (thanks to Kalyanov Dmitry)
1791 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
1793 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
1794 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
1795 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
1796 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
1798 * bug fix: interrupts arriving during CL:OPEN caused an error.
1799 * bug fix: overeager character buffering could cause input to block
1800 spuriously when reading from a pipe (lp#643686)
1801 * bug fix: more efficient timer expiry should avoid starvation on systems
1802 where number of SIGALRMs per second is restricted. (lp#375515)
1803 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
1804 * bug fix: compile-times no longer scale linearly with the size of
1805 quoted lists in source-code. (lp#654289)
1806 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
1807 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
1808 so badly. (lp#654485)
1809 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
1810 an error for eg. STRUCTURE. (lp#458015)
1811 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
1812 (lp#613871, thanks to Roman Marynchak)
1813 * bug fix: more reliable &REST list type derivation. (lp#655203)
1814 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
1815 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
1816 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
1817 also declared NOTINLINE. (lp#655581)
1818 * bug fix: the compiler could attempt to emit constant left shifts of
1819 greater value than n-word-bits. (lp#309063)
1820 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
1821 type information for the function being set. (lp#659220)
1822 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
1823 containing self-calls were recompiled with a new signature, and failed
1824 to warn when a self-call using the old signature was left in. (lp#655126)
1825 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
1826 :DEFAULT when the default external had character size other than 8 bits.
1828 * bug fix: derived types of functions in the same file were implicitly
1829 trusted, leading to potential heap corruption when those function were
1830 defined incompatibly. (lp#657499)
1831 * bug fix: existing ASDF source registries are ignored when building
1832 contribs (lp#659105)
1833 * bug fix: short-form DEFSETF checks that the second argument is a symbol
1834 (lp#655824, thanks to Roman Marynchak)
1835 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
1836 package-lock violation was detected. (lp#660752)
1837 * bug fix: the system can store different docstrings for a single function
1838 under different names. (lp#661631, regression from 1.0.29.24)
1839 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
1840 properly. (lp#384801)
1841 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
1842 of specified length could confuse the type derivation in unsafe code.
1844 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1845 fork with multiple Lisp threads running is made on every platform,
1846 not just Darwin. (lp#451111)
1847 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1848 around when core was saved, which could cause undefined behaviour when the
1850 * bug fix: Allow UNTRACE of functions that are no longer defined
1851 (lp#667657, thanks to Attila Lendvai)
1852 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1853 compile-time warning (lp#664373, thanks to Stas Boukarev)
1855 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1856 * incompatible change: FD-STREAMS no longer participate in the serve-event
1857 event-loop by default. (lp#316072)
1858 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1859 affects streams from CL:OPEN.
1860 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1861 default, but this is liable to change: applications needing serve-event
1862 for socket streams should explicitly request it using :SERVE-EVENTS T
1864 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1866 * enhancement: CLOS effective method functions and defclass slot typechecking
1867 function now have debug names for use in backtraces and profiles.
1868 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1870 * enhancement: symbols are printed using fully qualified names in several
1871 error and warning messages which are often associated with package
1872 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1873 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1874 thanks to Andrew Golding)
1875 * bug fix: reading /proc files on Linux works. (lp#425199)
1876 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1878 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1879 breaking code that tried to write the value of a printer control variable.
1880 (lp#581564, thanks to Stas Boukarev)
1881 * bug fix: WRITE compiler macro did not handle output stream designators
1882 correctly. (lp#598374, thanks to Stas Boukarev)
1883 * bug fix: better availability of names of foreign functions in backtraces
1884 on Linux. (lp#626962, thanks to Stas Boukarev)
1885 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1886 lp#627581, thanks to Josh Elsasser and Jim Wise)
1887 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1888 thanks to Josh Elsasser)
1889 * bug fix: using aliases for builtin classes as defmethod specializers
1890 without adding DEFTYPEs for them works. (lp#618387)
1891 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1893 * bug fix: legally dynamic-extent lists and vectors used as
1894 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1895 * bug fix: inline-expansion creating references to dead lambda-variables
1896 (lp#454681, thanks to Alexey Dejneka)
1897 * bug fix: better error message for bogus numerical arguments to RANDOM.
1898 (lp#598986, thanks to Stas Boukarev)
1899 * bug fix: the compiler occasionally inlined references from incompatible
1900 environments occurs. (lp#308951)
1901 * bug fix: the compiler threw an error when trying to compile a local
1902 function (labels or flet) known to take a specialized complex argument.
1903 (not in launchpad, reported by sykopomp in #lispgames)
1904 * bug fix: package-locks failed to protect against compile-time effects of
1905 DEFUN when the symbol previously had a macro definition. (lp#576637)
1906 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1907 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1908 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1909 * bug fix: evaluation in debugger REPL works using the global context when
1910 in frames that do not have sufficient debug information.
1911 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1913 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1915 * bug fix: interrupt taking longer than the requested period caused SLEEP
1916 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1918 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1920 ** Cross-compilation host is now specified to make.sh using
1921 command-line argument --xc-host=<command> instead of a positional
1922 argument. (thanks to Daniel Herring)
1923 ** Install location can be specified to make.sh using command-line
1924 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1925 * optimization: The default implementation of
1926 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1927 * enhancement: Explicit memory barrier operations are now available for use
1928 by multithreaded code. See documentation for details.
1929 * enhancement: Experimental support for threading on Linux/PPC.
1930 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1931 * bug fix: EXPT signals an error if first argument is a zero and second
1932 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1933 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1934 (lp#576594, thanks to Roman Marynchak)
1935 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1936 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1938 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1939 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1940 cached, leading to many fewer expensive calls to
1941 COMPUTE-APPLICABLE-METHODS.
1942 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1943 CLASS argument, search for and call an appropriate optimized ctor function
1945 * bug fix: WRITE always returns the correct value.
1947 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1948 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1949 * bug fix: Name conflicts between symbols passed as arguments to a single
1950 call to IMPORT no longer add multiple symbols with the same name to the
1951 package (detectable via DO-SYMBOLS).
1952 * bug fix: support building without the dlshim on darwin x86 and x86-64
1954 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1956 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1957 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1959 * bug fix: linkage-table entries on PPC now no longer overflow their
1960 space allocation (potentially causing crashes if they are written out
1962 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1963 platforms, preventing the GC from seeing stale pointers on the control
1964 stack in subsequent GCs (which would, and does, break invariants).
1965 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1966 * bug fix: Literal characters with code points greater than about 32767
1967 now work on PPC UNICODE builds.
1968 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1969 high order bits are explicitly cleared out. In some contrived situations,
1970 this could lead to wrong results in mixed real/complex float arithmetic.
1971 * bug fix: Fix function/macro redefinition warnings when building with
1972 clisp. (lp#576787, thanks to Josh Elsasser)
1973 * new platform: experimental support for ppc/openbsd (thanks to Josh
1975 * bug fix: Floating-point traps now work on ppc/linux.
1977 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1978 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1979 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1980 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1981 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1982 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1983 SB-THREAD:GRAB-MUTEX.
1984 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1985 contain additional data structures and tools for concurrent programming;
1986 at the moment it contains a lock-free queue, and a lock-free mailbox
1988 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1989 GET-MUTEX but takes &key rather than &optional parameters. Also added
1990 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1992 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1993 SB-THREAD:WAIT-ON-SEMAPHORE.
1994 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1996 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1997 conditions to defer the deadline for forever.
1998 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
2000 * enhancement: errors from NO-APPLICABLE-METHOD and
2001 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
2002 generic function call.
2003 * enhancement: SB-BSD-SOCKET improvements
2004 ** sockets and socket streams now have a more informative printed
2005 representation based on the corresponding SOCKET-NAME and
2007 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
2009 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
2010 CL:CLOSE when appropriate, and no longer disassociates the stream
2011 from the socket if close failed. (lp#543951)
2012 * improvements to the instrumenting profiler
2013 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
2014 ** optimization: counters no longer use locks for the overflow mode.
2015 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
2016 incurred an off-by-one miscount.
2017 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
2018 * enhancement: improved DEFMETHOD pretty-printing.
2019 * enhancement: perform range reduction when arguments are too large for
2020 x87's transcendentals (instead of returning 0). (lp#327192)
2021 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
2022 some of CL-PPCRE's macros. (lp#570079)
2023 * enhancement: our machine code is slightly less hostile to valgrind on
2025 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
2026 to Robert Swindells and Aleksej Saushev)
2027 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
2028 * bug fix: a rare case of startup-time page table corruption.
2029 * bug fix: a semaphore with multiple waiters and some of them unwinding due
2030 to timeouts could be left in an inconsistent state.
2031 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
2032 * bug fix: misoptimization of multiplication by one in
2033 (SB-C::FLOAT-ACCURACY 0) policies.
2034 * bug fix: miscounts in SB-PROFILE.
2035 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
2036 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
2037 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
2038 up itself" (March 2010) for further details.
2039 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
2040 against length of the list if the element is found before the specified
2041 END is reached. (thanks to Alec Berryman, lp#554385)
2042 * bug fix: errors signalled during package graph modification no longer
2043 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
2044 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
2045 :SB-DOC feature. (lp#552564)
2046 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
2047 * bug fix: more robust runtime executable path detection. (lp#375549)
2048 * bug fix: GCD always returns positive values. (lp#413680)
2049 * bug fix: Converting division to multiplication by reciprocal handles
2051 * bug fix: We were too eager in eliding range reduction tests on x87.
2052 The maximal magnitude is 2^63, not 2^64.
2053 * bug fix: Transforms for TRUNCATE don't die when the result is completely
2055 * bug fix: Maybe restore buildability on Alpha.
2056 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
2058 * bug fix: RANDOM-STATE can be printed readably again.
2059 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
2060 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
2061 types) could result in type mismatches during compilation.
2063 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
2064 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
2065 stack frame thrown from.
2066 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
2067 compiler optimization qualities inside dynamic extent of its body.
2068 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
2069 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
2071 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
2072 constraint propgation, allowing better compilation eg. when used to
2073 access structures with WITH-SLOTS. (lp#520366)
2074 * optimization: the compiler is now more aware of the type of the underlying
2075 storage vector for multidimensional simple arrays resulting in better code
2076 for accessing such arrays.
2077 * optimization: passing NIL as the environment argument to TYPEP no longer
2078 inhibits optimizing it. (lp#309788)
2079 * optimization: more efficient register usage when handling single-float
2080 arguments on x86-64. (thanks to Lutz Euler)
2081 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
2082 pre-allocated temporary vectors. (lp#496249)
2083 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
2084 in :INITIAL-CONTENTS. (lp#523612)
2085 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
2086 functions. (lp#524707)
2087 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
2088 WITH-SLOTS usages during compilation.
2089 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
2090 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
2091 all x86oid platforms with :UD2-BREAKPOINTS target feature.
2092 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
2093 instruction (tested on x86oid linux with ud2-breakpoints).
2094 * bug fix: slam.sh now works on win32.
2095 * bug fix: better differences of numeric types. (lp#309124)
2096 * bug fix: arrays declared intersection and union types can have their
2097 upgraded element type derived. (lp#316078)
2098 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
2099 threads started during profiling. (lp#472499)
2100 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
2102 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
2103 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
2104 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
2105 values instead of signaling an error. (lp#309093)
2106 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
2108 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
2109 declarations (lp#497321)
2110 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
2111 and failed to detect circular lists (lp#452008)
2112 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
2114 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
2115 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
2116 due to it, so that handlers can run.
2117 * bug fix: reparsing undefined types if they have become defined since
2118 parsing. (lp#309128)
2119 * bug fix: missing &REST type in a proclamation for a function with both
2120 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
2121 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
2122 expanded calls (lp#542174)
2123 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
2124 than just at toplevel form.
2126 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
2127 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
2128 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
2129 but work on type specifiers.
2130 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
2131 to name a type specifier.
2132 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
2133 specifier is valid where "valid" basically means "would be accepted as
2134 second argument of TYPEP".
2135 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
2136 returns the function's declared, or derived FTYPE.
2137 * new feature: SB-POSIX now supports accessing the d_ino member of
2138 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
2139 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
2140 provide for seeding a RANDOM-STATE object with user-provided data or
2141 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
2142 attempt to initialize the returned state from the operating system's
2143 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
2144 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
2145 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
2146 * bug fix: Fix grammar and style issues for the docstrings of
2147 printer-related variables and functions. (Thanks to mon_key; launchpad
2149 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
2151 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
2152 in a row even though a handler defered the deadline long into the
2154 * bug fix: A deadline handler was run without interrupts enabled for a
2155 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
2156 in infinitely spinning, non-killable threads.
2157 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
2158 before reaching the erring stack frame.
2159 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
2160 real power. (launchpad bug lp#525949)
2161 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
2162 GENCGC platforms. (launchpad bug lp#529014)
2163 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
2164 (launchpad bug lp#525916)
2165 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
2166 (Thanks to Robert Goldman)
2168 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
2169 * optimization: ROUND with a single single-float or double-float argument
2170 is properly inlined when possible.
2171 * optimization: Slightly better code is generated for integer<->float
2172 conversions and for single-float<->double-float conversions on x86-64.
2173 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
2174 code for 32-bit and 64-bit rotations on x86-64.
2175 * bug fix: The install script changes the ownership of directories as well
2176 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
2177 launchpad bug lp#508485)
2178 * bug fix: TRUNCATE with a single single-float or double-float argument is
2179 properly inlined when possible. (launchpad bug lp#489388)
2180 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
2181 no longer causes a compiler error on x86 and ppc.
2182 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
2183 always relative to *READTABLE* rather than the passed argument.
2185 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
2186 * minor incompatible change: threading support is now enabled by default
2188 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
2190 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
2191 are now caught and reported just like errors during macroexpansion.
2192 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
2193 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
2194 * enhancement: ASDF systems can now depends on SB-QUEUE.
2195 * fixes and improvements related to Unicode and external formats:
2196 ** bug fix: error handling and restart usage in the ucs-2 external format
2198 ** there is now an implementation of the ucs-4 external format.
2199 ** the utf-16 and utf-32 external formats are supported.
2200 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
2201 in the environment. setenv() and unsetenv() are also provided. (reported by
2202 Fare Rideau; launchpad bug lp#460455)
2203 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
2204 loading. This ensures sensible errors for .FASL files from other
2205 implementations on case-insensitive filesystems. (reported by Willem
2206 Broekema; launchpad bug lp#489417)
2207 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
2208 Willem Broekema; launchpad bug lp#489698).
2209 * bug fix: some minor code rearrangements to reenable warning-free building
2210 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
2211 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
2213 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
2216 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
2217 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
2218 * improvement: support O_LARGEFILE access to files larger than 2GB on
2219 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
2220 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
2221 definitions for methods specializing on the passed class itself.
2222 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
2223 definitions for methods specializing on the passed class itself, or on
2225 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
2226 about itself during the build (e.g. for M-? in Slime), if this flag is
2227 enabled in customize-target-features.lisp. This will increase the core
2228 size by about 5-6mb, though, so it's mostly interesting to SBCL
2230 * new feature: various GENCGC tuning parameters have been experimentally
2231 documented and exported from SB-EXT. See documentation for details.
2232 * fixes and improvements related to Unicode and external formats:
2233 ** the Unicode character database has been upgraded to the
2234 Unicode 5.2 standard, giving names and properties to a number of new
2235 characters, and providing a few extra characters with case
2237 ** improvement: restarts for providing replacement input/output on coding
2238 errors for fd-stream external formats.
2239 ** improvement: where :<encoding> is a keyword corresponding to an
2240 external format the system supports, it is now possible to specify
2241 (:<encoding> :replacement <character>) as an external format which will
2242 automatically substitute <character> on encoding or decoding errors for
2243 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
2245 ** improvement: the file streams underlying the standard streams (such as
2246 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
2247 which uses the replacement mechanism to handle encoding errors,
2248 preventing various infinite error chains and unrecoverable I/O
2250 ** minor incompatible change: the utf-8 external format now correctly
2251 refuses to encode Lisp characters in the surrogate range (char-codes
2252 between #xd800 and #xdfff).
2253 ** fix a typo preventing conversion of strings into octet vectors
2254 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
2256 ** fix a bug in the octet multibyte handling of decoding errors and the
2257 USE-VALUE restart. (launchpad bug lp#314939)
2258 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
2259 restart on fd-stream decoding errors.
2260 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
2261 error is near the end of file.
2262 ** fix a double-error case in unibyte octet conversions, when the first
2263 use of USE-VALUE is ignored.
2264 ** fix bugs in handling of undefined code points in unibyte encodings.
2265 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
2266 streams after an UNREAD-CHAR.
2267 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
2268 object is allocated in a boxed region of dynamic space.
2269 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
2270 fork with multiple Lisp threads running is made, instead of going
2271 ahead with unpredictable consequences. (reported by Leslie Polzer)
2272 * bug fix: uses of slot accessors on specialized method parameters within
2273 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
2274 error while finalizing the class. This fix may cause classes with slot
2275 accessors to be finalized later than previously. (reported by Lars Rune
2276 Nøstdal; launchpad bug lp#473699)
2277 * bug fix: restore buildability on the MIPS platform. (regression from
2278 1.0.30.38, reported by Samium Gromoff)
2279 * bug fix: inspecting closures is less likely to fail with a type error.
2280 * bug fix: no timer starvation when setting the system clock back.
2281 (launchpad bug lp#460283)
2282 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
2283 standard pprint dispatch table as specified by CLHS.
2284 * bug fix: give CLISP a hint about a type declaration to enable it to build
2285 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
2287 * bug fix: correctly dump literal objects in defaulting forms of arglists.
2288 (reported by Attila Lendvai; launchpad bug lp#310132)
2289 * bug fix: distinguish in type specifiers between arrays that might be
2290 complex and arrays that are definitely complex. (launchpad bug lp#309129)
2291 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
2292 type. (reported by Levente Mészáros; launchpad bug lp#485972)
2293 * bug fix: setting the value of a symbol-macro within a method in the
2294 presence of type declarations works properly again. (reported by Iban
2295 Hatchondo; launchpad bug lp#485019)
2297 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
2298 * optimization: faster FIND and POSITION on strings of unknown element type
2299 in high SPEED policies. (thanks to Karol Swietlicki)
2300 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
2302 * improvement: better error signalling for bogus parameter specializer names
2303 in DEFMETHOD forms (reported by Pluijzer)
2304 * bug fix: DELETE-FILE once again works on logical pathnames (regression
2306 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
2308 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
2309 removes previous default initargs (reported by Lars Rune Nøstdal and
2311 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
2312 lambda-lists. (reported by Peter Seibel)
2313 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
2314 correctly when starting from an executable core without saved runtime
2315 options (reported by Faré Rideau, thanks to Zach Beane)
2316 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
2317 an optimization note instead. (reported by Martin Cracauer)
2318 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
2319 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
2320 new process group if it doesn't need to share stdin with the sbcl
2321 process. (thanks to Leslie Polzer)
2322 * bug fix: SATISFIES could be misoptimized to refer to a local function.
2323 (reported by Stanislaw Halik)
2325 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
2326 * improvement: stack allocation is should now be possible in all nested
2327 inlining cases: failure to stack allocate when equivalent code is manually
2328 open coded is now considered a bug.
2329 * improvements related to Unicode:
2330 ** the Unicode character database has been upgraded to the
2331 Unicode 5.1 standard, giving names and properties to a number of new
2332 characters, and providing a few extra characters with case
2334 ** the system now recognizes and produces names for Unicode Hangul
2335 syllable characters.
2336 ** the EBCDIC-US external-format is now supported for octet operations
2337 (as well as for stream operations).
2338 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
2339 be used to output toplevel compile-time effects into a separate .CFASL
2341 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
2342 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
2344 * optimization: TRUNCATE on known single- and double-floats is upto 25%
2346 * optimization: division of floating point numbers by constants uses
2347 multiplication by reciprocal when an exact reciprocal exists.
2348 * optimization: multiplication of single- and double-floats floats by
2349 constant two has been optimized.
2350 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
2351 sufficient type information is available. (thanks to Leslie Polzer)
2352 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
2353 known structure objects are as efficient as defstruct generated accessors.
2354 * optimization: unused vector creation can now be optimized away.
2355 * improvement: ASDF systems can now depends on SB-INTROSPECT.
2356 * improvement: a STYLE-WARNING is signalled when a generic function
2357 clobbers an earlier FTYPE proclamation.
2358 * improvement: the compiler is able to track the effective type of
2359 generic function across method addition and removal even in the
2360 absence of an explicit DEFGENERIC.
2361 * improvement: DESCRIBE now reports on symbols naming undefined
2362 but assumed or declared function as well.
2363 * improvement: recompilation of systems using SB-GROVEL now works
2364 (thanks to Leslie Polzer)
2365 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
2366 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
2368 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
2369 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
2370 well as user defined declaration names.
2371 ** VARIABLE-INFORMATION is now aware of alien variables.
2372 * improvement: improved address space layout on OpenBSD (thanks to Josh
2374 * improvement: pretty-printing of various Lisp forms has been improved
2375 (thanks to Tobias Rittweiler)
2376 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
2377 unused were deleted in safe code. (reported by John Fremlin)
2378 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
2380 * bug fix: some out-of-line array predicates were missing (reported by
2382 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
2384 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
2385 (thanks to Larry D'Anna)
2386 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
2387 as well. (reported by Josh Elsasser)
2388 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
2389 leading to possible attempts to delete the same file twice. See docstring
2390 on DELETE-FILE for details. (reported by John Fremlin)
2391 * bug fix: DELETE-FILE once again deletes the file named by the pathname
2392 designator argument, rather than its truename. (reported by Luis
2394 * bug fix: the low-level debugger had 32-bit assumptions and was missing
2395 information about some array types. (thanks to Luis Oliveira)
2396 * bug fix: moderately complex combinations of inline expansions could
2397 be miscompiled if the result was declared to be dynamic extent.
2398 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
2399 form (+ <variable> <integer>) were miscompiled under certain
2401 * bug fix: in some cases no compiler note about failure to stack allocate
2402 was emitted, even if the objects were in fact heap allocated.
2403 * bug fix: minor violation of "otherwise inaccessible" rule for stack
2404 allocation could cause objects users might reasonably expect to
2405 be heap allocated to be stack allocated.
2406 * bug fix: DESCRIBE signalled an error for generic functions under
2407 certain circumstances. (thanks to Leslie Polzer)
2408 * bug fix: Fixed spelling of an error message.
2410 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
2411 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
2412 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
2413 of SB-THREAD:THREAD-ERROR-THREAD.
2414 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
2415 * new feature: docstrings for local and anonymous functions are no longer
2416 discarded. (thanks to Leslie Polzer)
2417 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
2418 values in other threads.
2419 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
2420 about object allocation.
2421 * optimization: division of a real float by a complex float is implemented
2422 with a specialised code sequence.
2423 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
2424 keywords is an order of magnitude faster.
2425 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
2426 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
2427 methods, and similarly for non-standard metaclass classes as long as there
2428 are no methods additional on MAKE-INSTANCE.
2429 * optimization: more efficient type-checks for FIXNUMs when the value
2430 is known to be a signed word on x86 and x86-64.
2431 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
2432 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
2434 * optimization: compiler is smarter about delegating argument type checks to
2436 * optimization: several character functions are now compiled somewhat more
2437 efficiently. (reported by Lynn Quam)
2438 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
2439 * improvement: less unsafe constant folding in floating point arithmetic,
2440 especially for mixed complex/real -float operations.
2441 * optimization: constant double and single floats are stored in native
2442 unboxed format on x86[-64].
2443 * optimization: smarter code for arithmetic operations with constant floats,
2444 complex floats, or integers on x86[-64].
2445 * optimization: smarter code for conjugate/multiplication of float complexes
2446 and abs/negate of floats on x86-64.
2447 * optimization: more efficient complex float and real float operations on
2449 * improvement: complex float division is slightly more stable.
2450 * improvement: DESCRIBE output has been reworked to be easier to read and
2451 contains more pertinent information.
2452 * improvement: failure to provide requested stack allocation compiler notes
2453 provided in all cases (requested stack allocation not happening without a
2454 note being issued is now considered a bug.)
2455 * bug fix: SB-POSIX exports the documented types and functions
2456 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
2457 types. (reported by "abhi")
2458 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
2459 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
2460 (thanks to Paul Khuong)
2461 * bug fix: looping around HANDLER-CASE could silently consume stack space
2462 on each iteration. (reported by "foobar")
2463 * bug fix: better error signalling when calls to functions seeking elements
2464 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
2465 (reported by Tobias Rittweiler)
2466 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
2467 directory components now works as it used to. (various prolems reported by
2468 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
2469 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
2470 (reported by Elliot Slaughter, thanks to Stas Boukarev)
2471 * bug fix: bogus undefined variable warnings from fopcompiled references to
2472 global variables. (thanks to Lars Rune Nøstdal)
2473 * bug fix: foreign function names should now appear in backtraces on
2474 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
2475 * bug fix: SETF compiler macro documentation strings are not discarded
2477 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
2478 (thanks to Alex Plotnick)
2479 * bug fix: SLEEP accepts large integer arguments, truncating them to
2480 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
2481 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
2482 * bug fix: compiler notes for expensive slot type checks could be emitted
2483 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
2485 changes in sbcl-1.0.29 relative to 1.0.28:
2486 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
2487 https://bugs.launchpad.net/sbcl
2488 Bugs can be reported directly there, or by sending email to
2489 sbcl-bugs@lists.sourceforge.net
2490 (no subscription required.)
2491 * minor incompatible change: under weak type checking policy integer
2492 types are weakened less aggressively.
2493 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
2494 allowed to return, which causes SBCL to quit with exit status 0. Previously
2495 if the function returned with a small integer return value, that value
2496 was accidentally reused as the exit status.
2497 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
2498 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
2499 :HASH-FUNCTION argument. Refer to user manual for details.
2500 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
2502 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
2503 microseconds since the Unix epoch on all platforms.
2504 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
2505 allows the compiler to safely elide boundedness checks for special
2507 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
2508 the symbol, prohibits both lexical and dynamic binding. This is mainly an
2509 efficiency measure for threaded platforms, but also valueable in
2511 * new feature: UNC pathnames are now understood by the system on Windows.
2512 * optimization: the compiler uses a specialized version of FILL when the
2513 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
2515 * optimization: accesses to potentially non-simple arrays where element type
2516 is known are 50% faster.
2517 * optimization: compiler now generates faster array typechecking code.
2518 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
2520 * optimization: multidimensional array accesses in the absence of type
2521 information regarding array rank are approximately 10% faster due to
2522 open coding of ARRAY-RANK.
2523 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
2524 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
2526 * optimization: result of call to VECTOR can now be stack allocated.
2527 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
2528 as long as the resulting array is one-dimensional and has a known
2529 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
2530 length of the list matches the known length of the vector does not
2531 allocate the list as an intermediate step. Ditto for VECTOR and simple
2533 * optimization: MAKE-ARRAY can now stack allocate in the presence of
2534 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
2535 known element type, and is known to be simple and one dimensional.
2536 * improvement: SBCL now emits a compiler note where stack allocation was
2537 requested but could not be provided (not in all cases, unfortunately)
2538 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
2539 * improvement: pretty-printing loop has been implemented properly. (thanks
2540 to Tobias Rittweiler)
2541 * documentation: CLOS slot typechecing policy has been documented.
2542 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
2543 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
2544 pointer, leading to memory faults. (thanks to Bart Botta)
2545 * bug fix: better floating point exception handling on x86/OpenBSD.
2546 (thanks to Josh Elsasser)
2547 * bug fix: exit status from QUIT when called under --script was lost
2548 (reported by Hubert Kauker)
2549 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
2550 same implementation of FILL to initialize the array, even if a more
2551 efficient one was available (reported by Stas Boukarev, thanks to
2553 * bug fix: potential miscompilation of array stack allocation on x86 and
2554 x86-64. (reported by Time Tossavainen)
2555 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
2556 result in their subforms being treated as top level forms. (reported by
2558 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
2559 than a machine register could leave garbage in the high bits of the
2560 result register (bug 316325).
2561 * bug fix: disable address space randomization Linux/x86-64 as well,
2562 not just x86-64. (reported by Ken Olum)
2563 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
2564 generate incorrect code.
2565 * bug fix: #201; type inference for CONS and ARRAY types could derive
2566 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
2567 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
2568 could not be assigned to or bound with PROGV. (reported by Lorenz
2570 * bug fix: the value of CL:- in the inspector was the previous expression
2571 evaluated rather than the expression being evaluated.
2572 * bug fix: constants can no longer be locally declared special.
2573 * bug fix: signals delivered to threads started from foreign land (read:
2574 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
2575 thread by blocking all signals and resignalling.
2576 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
2577 from :INITFORM, if any.
2579 changes in sbcl-1.0.28 relative to 1.0.27:
2580 * a number of bugs in cross-compilation have been fixed, with the ultimate
2581 result that building under (at least) clisp should be much more reliable.
2582 * minor incompatible changes: echo-streams now propagate unread-char to the
2583 underlying input stream, and no longer permit unreading more than one
2585 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
2586 frames, allowing for instance more reliable backtraces.
2587 * improvement: the debugger REPL can now reference lexical variables
2588 by name directly for code compiled with (DEBUG 3).
2589 * improvement: errors from malformed declarations now have better source
2590 paths associated with them. (thanks to Tobias Rittweiler)
2591 * optimization: faster local calls on x86/x86-64
2592 * bug fix: some error messages for out-of-bound array indexes confused the
2593 index and the bound. (thanks to Stas Boukarev)
2594 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
2596 * bug fix: running regressions tests in shells without OSTYPE set now works.
2597 (reported by Harald Hanche-Olsen)
2598 * bug fix: more robust static space exhaustion signalling from
2599 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
2600 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
2601 docstring away instead of storing it under names such as (LAMBDA (X)).
2602 (reported by Leslie Polzer)
2603 * bug fix: timers could go off in the wrong order, be delayed indefinitely
2604 (thanks to Ole Arndt for the patch)
2605 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
2606 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
2607 potentially-invalid effective methods in its cache.
2608 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
2609 instances as well (thanks to Paul Khuong)
2610 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
2611 SB-POSIX:WAITPID and their C equivalents.
2612 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
2614 changes in sbcl-1.0.27 relative to 1.0.26:
2615 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
2616 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
2617 * improvement: the system either recovers from stack exhaustion or dies
2618 properly as opposed to leaving the user uncertain of whether the handler
2619 trampled on some random memory next to the stack or having to rely on
2620 --lose-on-corruption (which is still a good idea to use in production
2621 because stack exhaustion can happen in signal handlers which will likely
2623 * bug fix: fix gc related interrupt handling bug on ppc (regression from
2624 1.0.25.37, reported by Harald Hanche-Olsen)
2625 * bug fix: work around signal delivery bug in darwin (regression from
2626 1.0.25.44, reported by Sidney Markowitz)
2627 * bug fix: fix ERROR leaking memory (reported by David Thompson)
2629 changes in sbcl-1.0.26 relative to 1.0.25:
2630 * incompatible change: an interruption (be it a function passed to
2631 INTERRUPT-THREAD or a timer function) runs in an environment where
2632 interrupts can be enabled. The interruption can use
2633 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
2634 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
2635 potentially running out of stack. Keep in mind that in the absence
2636 of WITHOUT-INTERRUPTS some potentially blocking operation such as
2637 acquiring a lock can enable interrupts.
2638 * incompatible change: GC-OFF and GC-ON are removed, as they were
2639 always unsafe. Use WITHOUT-GCING instead.
2640 * new feature: runtime option --disable-ldb
2641 * new feature: runtime option --lose-on-corruption to die at the
2642 slightest hint of possibly non-recoverable errors: running out of
2643 memory, stack, alien stack, binding stack, encountering a memory
2644 fault, etc. In the absence of --lose-on-corruption a warning is
2646 * enhancement: detect binding stack exhaustion
2647 * enhancement: detect alien stack exhaustion on x86/x86-64
2648 * improvement: generally more stable and reliable interrupt handling
2649 * improvement: there is a per thread interruption queue,
2650 interruptions are executed in order of arrival
2651 * improvement: a repeating timer reschedules itself when the it has
2652 finished, but expiration times are spaced equally. If an
2653 expiration time is in the past it will trigger after a short grace
2654 period that may give a chance to other things to run.
2655 * optimization: slightly faster gc on multithreaded builds
2656 * optimization: faster WITHOUT-GCING
2657 * bug fix: when JOIN-THREAD signals an error, do it when not holding
2658 important locks so that the debugger/handler doesn't produce
2659 recursive errors or deadlock.
2660 * bug fix: real-time signals are not used anymore, so no more
2661 hanging when the system wide real-time signal queue gets full.
2662 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
2664 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
2665 * bug fix: fix random memory faults related to interrupts on alpha
2666 * bug fix: fix random memory faults related to interrupts on sparc
2667 * bug fix: fix deadlocks related to starting threads
2668 * bug fix: fix deadlines on locks on futex platforms
2669 * bug fix: restore errno in signal handlers
2670 * bug fix: fix deadlocks related to hash tables
2671 * bug fix: fix deadlocks in pcl
2673 changes in sbcl-1.0.25 relative to 1.0.24:
2674 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
2675 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
2676 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
2677 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
2678 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
2679 better name and does not return values so stale on multiprocessor systems.
2680 Also, HOLDING-MUTEX-P was added for about the only sane usage of
2682 * improvement: unithread builds keep track of MUTEX-VALUE.
2683 * improvement: reading from a TWO-WAY-STREAM does not touch the output
2684 stream anymore making it thread safe to have a concurrent reader and
2685 a writer, for instance, in a pipe.
2686 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
2687 arguments, making compiler-macros for SETF-functions able to inspect
2688 their constant arguments.
2689 * improvement: COMPILE-FILE reports times with millisecond accuracy
2690 (thanks to Luis Oliveira)
2691 * optimization: CHAR-CODE type derivation has been improved, making
2692 TYPEP elimination on subtypes of CHARACTER work better. (reported
2693 by Tobias Rittweiler, patch by Paul Khuong)
2694 * bug fix: setting alien structure fields of type struct by value now
2695 computes the right offset for the memory copy.
2696 * bug fix: compilation problem involving inlined calls to aliens with
2697 result type VOID. (reported by Ken Olum)
2698 * bug fix: #235a; sequential inline expasion in different policies no
2699 longer reuses the functional from the previous expansion site.
2700 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
2701 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
2702 * bug fix: named ENUMs in multiply-referenced alien record types no longer
2703 cause an implied type redefinition. Regression from 1.0.21.29.
2704 * bug fix: sign-extension of small signed return values now works with C
2705 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
2706 * improvements to the Windows port:
2707 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
2708 Westfold, thanks to Rudi Schlatte)
2710 changes in sbcl-1.0.24 relative to 1.0.23:
2711 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
2712 vector of a multidimensional SIMPLE-ARRAY.
2713 * new feature: the system now signals a continuable error if standard
2714 readtable modification is attempted. (thanks to Tobias Rittweiler)
2715 * new feature: DIRECTORY has been extended with a non-standard keyword
2716 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
2717 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
2718 has been robustified and documented better. (thanks to Robert Goldman)
2719 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
2720 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
2721 * tradeoff: constant FORMAT control strings are now compiled unless
2722 SPACE > SPEED (previously only when SPEED > SPACE.)
2723 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
2725 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
2727 * bug fix: lexical type declarations are now correctly reported by
2728 SB-CLTL2. (reported by Larry D'Anna)
2729 * bug fix: STRING-TO-OCTETS did not handle :START properly when
2730 using UTF-8 as external format. (thanks to Luis Oliveira)
2731 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
2732 are signalled correctly. (thanks to Stas Boukarev)
2733 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
2734 designator. (thanks to Tobias Rittweiler)
2735 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
2736 designator, and returns T instead of the function. (thanks to
2738 * bug fix: direct superclasses of STANDARD-CLASS and
2739 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
2740 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
2741 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
2742 when no class with the named slot yet exists no longer causes a
2743 compile-time style-warning.
2744 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
2745 in safe code. (reported by Didier Verna)
2746 * bug fix: #430; nested structure constructors can stack allocate.
2747 * bug fix: on some 64-bit platforms dynamic space size was truncated
2748 to #xffff0000 bytes. (reported by Benjamin Lambert)
2749 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
2750 REPL unusable. (reported by Daniel Herring)
2751 * bug fix: return values of READ-SEQUENCE did not take :START into
2752 account on file streams, regressions since 1.0.12.22. (reported by
2753 Thomas Russ, patch by Paul Khuong)
2754 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
2755 method specializer used to confuse permuation vector optimization.
2756 * bug fix: system inserted bogus implicit type declarations for local
2757 special variables in DEFMETHOD bodies.
2758 * bug fix: #354; duplicated frames in backtraces due to
2759 non-tail-call-optimized XEPs to functions with return type NIL
2761 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
2762 initializes structure object slots according to DEFSTRUCT initforms,
2763 and DEFSTRUCT forms :INCLUDEind structure classes defined using
2764 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
2765 (reported by Bruno Haible and Stephen Wilson)
2766 * bug fix: #395; fill-pointer output streams used now support
2767 element-type BASE-CHAR as well.
2768 * bug fix: compiler error when attempting to derive return value of
2769 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
2771 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
2773 * bug fix: Mac OS X binaries should now be portable between Leopard
2776 changes in sbcl-1.0.23 relative to 1.0.22:
2777 * enhancement: when disassembling method functions, disassembly
2778 for the associated fast function is also produced.
2779 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
2781 * optimization: printing with *PRINT-PRETTY* true is now more
2782 efficient as long as the object being printed doesn't require
2783 special handling by the pretty printer.
2784 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
2785 now interact correctly with type declarations.
2786 * partial bug fix: PCL detects infinite recursion during wrapper
2787 validation. (thanks to Attila Lendvai)
2788 * bug fix: #426; nested function calls are inlined properly.
2789 Previously if FOO was an inline function, in calls of the form
2790 (FOO (FOO ...)) the outer call was not inlined.
2791 * bug fix: long long arguments passed in registers to alien
2792 functions on PowerPC Linux and NetBSD are now handled correctly
2793 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
2795 changes in sbcl-1.0.22 relative to 1.0.21:
2796 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
2797 for the shared object in the current directory, but passes the native
2798 namestring of the designated pathname to the operation system's shared
2799 object loading function as-it.
2800 * minor incompatible change: --disable-debugger toplevel option now takes
2801 effect before processing of initialization files and --eval or --load
2803 * new feature: new commandline argument: --script, which supports
2804 shebang lines. See documentation for details. (based on work by
2806 * new feature: SAVE-LISP-AND-DIE can save current values of
2807 --dynamic-space-size and --control-stack-size in the executable core,
2808 causing it to skip normal runtime option processing. See documentation
2809 for details. (thanks to Zach Beane)
2810 * enhancement: inoccous calls to EVAL or generic functions dispatching
2811 on subclasses of eg. STREAM no longer cause compiler notes to appear.
2812 * enhancement: the system no longer resignals errors from --load and
2813 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
2814 associated with the original error to be lost. (thanks to Ariel
2816 * enhancement: :DONT-SAVE keyword argument has been added to
2817 LOAD-SHARED-OBJECT for controlling interaction with
2818 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
2819 the effects of an earlier LOAD-SHARED-OBJECT call.
2820 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
2821 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
2822 provided. (reported by Cedric St-Jean)
2823 * bug fix: circularity handling in the reader did not treat raw
2824 structure slots correctly. (reported by Cedric St-Jean)
2825 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
2826 file descriptors when there were none.
2827 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
2828 was broken. (reporteed by Willem Broekema)
2829 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
2830 pathnames without a directory.
2831 * bug fix: COMPILE-FILE did not warn about undefined variable
2832 references at toplevel, and LOAD of the resulting fasl did
2833 not signal an error.
2834 * bug fix: functions with non-required arguments used to end up with
2835 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
2836 * bug fix: redefining a function with non-required arguments didn't
2837 update the system's knowledge about its call signature properly.
2838 * bug fix: fixed #431; incompatible alien record type redefinitions
2839 are detected and handled. (reported by Neil Haven)
2840 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
2841 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
2843 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2844 after alien stack frames.
2845 * bug fix: strings passed to mk{s,d}temp lacked null termination
2847 changes in sbcl-1.0.21 relative to 1.0.20:
2848 * new feature: the compiler is able to track the effective type of a
2849 generic function across method addition and removal.
2850 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2851 appropriately typed structure slots without locking.
2852 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2853 information like those gathered by TIME using a programming-friendly
2855 * new feature: TIME reports time taken even if the form performs a
2856 non-local transfer of control.
2857 * enhancement: reduced conservativism on GENCGC platforms: on
2858 average 45% less pages pinned (measured from SBCL self build).
2859 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2860 mutate constant symbols or violate declaimed type of the symbol.
2861 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2862 sleeping on the semaphore in heavily contested semaphores.
2863 * bug fix: semaphores and condition variables were not interrupt
2865 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2866 owned by other threads anymore.
2867 * bug fix: FIND on lists called KEY outside the specified
2868 subsequence. (reported by budden)
2869 * bug fix: LOG doesn't use single-float intermediate results when
2870 given mixed integer and double-float arguments, leading to better
2871 precision. (reported by Bob Felts)
2872 * bug fix: LOG with base zero returned values of inconsistent type.
2874 changes in sbcl-1.0.20 relative to 1.0.19:
2875 * minor incompatible change: OPTIMIZE qualities
2876 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2877 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2878 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2879 * documentation: some slot access efficiency guidelines have been
2880 added to the user manual.
2881 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2882 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2883 as ASSOC and MEMEBER.
2884 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2885 to more efficient EQ-comparison versions more often.
2886 * optimization: enhanced derivation of DOLIST iteration variable type
2888 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2890 * optimization: runtime lookup of function definitions can be
2891 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2892 * optimization: compiler is able to derive the return type of
2893 (AREF (THE STRING X) Y) as being CHARACTER.
2894 * optimization: CLRHASH on empty hash-tables no longer does pointless
2895 work. (thanks to Alec Berryman)
2896 * optimization: REPLACE deftransforms don't punt when :START1 or
2898 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2899 no longer emits a code deletion note. (reported by Andrew
2901 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2902 functions with an odd number of &OPTIONAL arguments, a &REST
2903 argument, and one or more &KEY arguments at the call site.
2904 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2905 arguments appeared at call sites as well.
2906 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2907 READ-LINE &co can no longer read from them afterwards. (reported
2909 * bug fix: fixed #427: unused local aliens no longer cause compiler
2910 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2912 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2913 alien-stack leakage. (reported by Andy Hefner)
2914 * bug fix: PROGV signals an error when an attempt to violate declared
2915 type of a variable or bind a constant is made.
2916 * bug fix: SET signals an error when an attempt to violate declared
2917 type of a variable is made.
2918 * bug fix: restart computation during the execution of a restart
2919 test function no longer causes infinite recursion. (reported by
2921 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2922 signals an error. (thanks to Pierre Mai)
2923 * bug fix: EXPORT left symbol unexported in conflict situations.
2924 (thanks to Michael Weber)
2925 * bug fix: correctly handle name conflicts involving CL:NIL.
2926 (thanks to Michael Weber)
2927 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2928 conflicts arising from USEing package with conflicting symbols
2929 correctly. (thanks to Michael Weber)
2931 changes in sbcl-1.0.19 relative to 1.0.18:
2932 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2933 warnings that go otherwise unhandled will be muffled if they are
2934 of the type that's the value of this variable.
2935 * optimization: stack allocation is slightly more efficient on x86
2937 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2938 where a raw slot always is initialized using the initform whose
2939 type is not know sufficiently well a compile-time are now compiled
2940 correctly. (reported by John Morrison)
2941 * bug fix: compiler no longer makes erronous assumptions in the
2942 presence of non-foldable SATISFIES types.
2943 * bug fix: stack analysis missed cleanups of dynamic-extent
2944 arguments in non-let-converted calls to local functions.
2945 * improvements to the Windows port:
2946 ** adjusted address spaces for building on both Win32 and
2947 Win64. (thanks for John Connors)
2948 * fixed some bugs revealed by Paul Dietz' test suite:
2949 ** interval arithmetic during type derivation used inexact integer
2950 to single-float coercions.
2951 ** arithmetic operations involving large integers and single
2952 floats give the same results in compiled and interpreted code.
2953 ** deriving the result type of COERCE no longer signals an error
2954 if the derived type of the second argument is a MEMBER type
2955 containing invalid type specifiers.
2956 ** ADJOIN with constant NIL as second argument works correctly.
2957 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2959 changes in sbcl-1.0.18 relative to 1.0.17:
2960 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2961 profiles only the current thread.
2962 * minor incompatible change: changes to SYMBOL-VALUE of constants
2963 defined with DEFCONSTANT now signal an error.
2964 * enhancement: SB-SPROF now has support for wallclock profiling,
2965 and is also able to profile specific threads. REPORT output
2966 has also additional sorting options.
2967 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2969 * optimization: structure allocation has been improved
2970 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2971 ** out of line constructors are ~10% faster.
2972 ** inline constructors are ~15% faster.
2973 ** inline constructors are capable of dynamic extent allocation
2974 (generally on x86 and x86-64, in some cases on other platforms
2976 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2978 * optimization: file compiler is now able to coalesce non-circular
2979 lists, non-base strings, and bit-vectors. Additionally, constants
2980 are never referenced through SYMBOL-VALUE at runtime.
2981 * optimization: code defining methods on PRINT-OBJECT (and other
2982 generic functions in the COMMON-LISP package) now loads faster.
2983 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2985 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2986 fasl is now deleted. (reported by Attila Lendvai)
2987 * bug fix: READ-LINE always returned NIL for the last line in files.
2988 (reported by Yoshinori Tahara)
2989 * bug fix: more accurate disassembly annotations of foreign function
2990 calls. (thanks to Andy Hefner)
2991 * bug fix: trimming non-simple strings and non-string string
2992 designators when the there is nothing to trim works properly.
2993 (thanks to James Knight)
2994 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2995 (thanks to Travis Cross)
2996 * fixed some bugs revealed by Paul Dietz' test suite:
2997 ** NIL is a valid function name (regression at 1.0.13.38)
2998 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2999 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
3000 fill pointers properly (regression at 1.0.12.23)
3001 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
3002 displacement indices properly (regression at 1.0.12.23)
3004 changes in sbcl-1.0.17 relative to 1.0.16:
3005 * temporary regression: user code can no longer allocate closure
3006 variable storage on stack, due to bug 419 without explicitly
3007 requesting it. Please consult sbcl-devel for advice if you need to
3008 use this feature in the meanwhile.
3009 * new feature: runtime argument --control-stack-size can be used to
3010 adjust thread default control stack size.
3011 * enhancement: improved TIME output
3012 ** all times are reported using the measured accuracy (milliseconds
3013 for real and GC times, microseconds for everything else.)
3014 ** processor cycle counts on x86 and x86-64.
3015 ** interpreted forms are counted for both evaluator modes.
3016 ** number of lambdas converted by the compiler is reported.
3017 ** CPU percentage report (computed from real and total run time.)
3018 ** more comprehensive run time reporting, using a condenced format
3019 ** interperted form, lambda, and page fault counts are omitted
3021 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
3023 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
3024 * optimization: two argument forms of LAST are upto ~10% faster
3025 in normal SPEED policies.
3026 * optimization: NCONC no longer needs to heap cons its &REST list
3027 in normal SPEED policies.
3028 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
3029 to Sidney Markowitz)
3030 * bug fix: UNION and NUNION work with :TEST-NOT once more,
3031 regression since 1.0.9.1. (thanks to Eric Marsden)
3032 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
3033 since 1.0.15.36. (thanks to Paul Khuong)
3034 * bug fix: LAST when always returned the whole list when given a bignum
3035 as the second argument.
3036 * bug fix: dynamic extent allocation of nested lists and vectors
3037 could leak to otherwise accessible parts.
3038 * bug fix: invalid optimization of heap-allocated alien variable
3040 * bug fix: fasl header checking is less vulnerable to different
3041 platform word lengths.
3042 * bug fix: more correct assembler syntax for GNU binutils
3043 2.18.50.0.4 support. (thanks to Marijn Schouten)
3044 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
3046 * bug fix: the fopcompiler can handle LOCALLY forms (with no
3047 declarations) successfully. (reported by Attila Lendvai)
3049 changes in sbcl-1.0.16 relative to 1.0.15:
3050 * minor incompatible change: revert the changes to sb-posix's error
3051 signaling added in 1.0.14.
3052 * minor incompatible change: change PROBE-FILE back to returning
3053 NIL whenever we can't get a truename, as was the case before 1.0.14.
3054 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
3055 inherits from ERROR instead of just CONDITION.
3056 * new feature: SB-INTROSPECT can provide source locations for instances
3057 as well. (thanks to Tobias Rittweiler)
3058 * optimization: binding special variables now generates smaller code
3059 on threaded platforms.
3060 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
3061 and cases where no :TEST is given but the compiler can infer that
3062 the element to search is of type (OR FIXNUM (NOT NUMBER)).
3063 * optimization: better LOGNOT on fixnums.
3064 * optimization: modular arithmetic for a particular requested width
3065 is implemented using a tagged representation unless a better
3066 representation is available.
3067 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
3068 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
3069 for wellformedness and returns a specialized vector. (reported by
3070 Francois-Rene Rideau)
3071 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
3072 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
3073 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
3074 unscheduling timer at the same time as another timer fires.
3075 * bug fix: don't reschedule timers for dead threads.
3076 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
3077 * bug fix: copying output from RUN-PROGRAM to a stream signalled
3078 bogus errors if select() was interrupted.
3079 * enhancement: add support for fcntl's struct flock to SB-POSIX.
3081 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
3082 * enhancement: cleaner backtraces for interactive interrupts, as
3083 well as other cases where the interesting frames used to be
3084 obscured by interrupt handling frames.
3085 * enhancement: untracing a whole package using (UNTRACE "FOO") is
3086 now supported, and tracing a whole package using (TRACE "FOO") now
3087 traces SETF-functions as well.
3088 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
3089 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
3090 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
3091 * unreadably printed representation of hash-tables now includes
3093 * bug fix: partially fixed #188: type propagation from assignments
3094 is now more efficient.
3095 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
3096 'DOUBLE-FLOAT) are not flushable.
3097 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
3098 full address of the object, and none of the tag bits.
3099 * bug fix: readably printing hash-tables now respects other printer
3100 control variables. (reported by Cedric St-Jean)
3101 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
3102 keyword with MAKE-HASH-TABLE.
3103 * bug fix: export SB-POSIX:MKSTEMP.
3104 * bug fix: SORT was not interrupt safe.
3105 * bug fix: XREF accounts for the last node of each basic-block as
3107 * bug fix: MAKE-INSTANCE optimizations interacted badly with
3108 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
3109 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
3110 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
3111 create obsolete instances in the case of redefinition or
3112 obsoletion of a superclass. (thanks to Andy Hefner)
3113 * bug fix: Support for the Alpha architecture has been revived; it had
3114 suffered somewhat from lack of maintenance since sbcl-1.0.
3115 * improvements to the Windows port:
3116 ** The system detects the codepage to use at startup, instead of
3117 using the value from the saved core. (thanks to Kei Suzuki)
3119 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
3120 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
3121 (see documentation for details.)
3122 * revived support for OpenBSD (contributed by Josh Elsasser)
3123 * partially fixed bug #108: ROOM no longer suffers from occasional
3124 (AVER (SAP= CURRENT END)) failures.
3125 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
3126 bodies no longer cause a WARNING to be signalled. (reported by
3128 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
3129 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
3130 the bug in TRUNCATE.) (reported by Michael Weber)
3131 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
3132 no samples. (reported by Andy Hefner)
3133 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
3134 no longer appear as (NIL ...) frames in backtraces.
3135 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
3136 is now actually exported from SB-EXT as documented. (reported by
3138 * bug fix: sb-aclrepl now correctly understands how to inspect
3139 single-floats on 64-bit platforms where single-floats are not boxed.
3140 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
3141 yet been finalized. (reported by Levente Meszaros)
3142 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
3143 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
3144 SBCL-specific optimize qualities.
3146 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
3147 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
3148 an executable in the search path, and does so in the child
3149 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
3150 been removed; it can be found in the CVS history, for somebody who
3151 needs that search behavior (see the manual).
3152 * minor incompatible change: compiler policy re. weakening type
3153 checks has changed: now type checks are weakened only if SAFETY < 2
3155 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
3156 unparsing of directory pathnames as files. Analogously,
3157 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
3158 filename to parse into a directory pathname.
3159 * enhancement: implicit generic function creation now signals a
3160 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
3161 users can bind handlers for and muffle around calls to LOAD.
3162 * enhancement: RUN-PROGRAM allows unicode arguments and environments
3163 to be used (using the default stream external format), and allows
3164 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
3165 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
3166 strings and vectors whose element-type or simplicity is not fully
3167 known at compile-time.
3168 * optimization: STRING-TRIM and related functions no longer allocate
3169 a new string when no trimming needs to be performed. These functions
3170 are also faster than before when the input string has been declared
3172 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
3173 * optimization: READ-LINE is significantly faster for files containing
3175 * optimization: non-open coded uses of character comparison operators
3176 (e.g. char=) no longer cons when called with more than one parameter
3177 on platforms supporting dynamic-extent allocation.
3178 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
3179 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
3180 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
3182 * bug fix: some sequence functions elided bounds checking when
3184 * bug fix: too liberal weakening of union-type checks when SPEED >
3186 * bug fix: more bogus fixnum declarations in ROOM implementation
3189 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
3190 * new feature: MAKE-HASH-TABLE now experimentally accepts a
3191 :SYNCHRONIZED argument, which makes the hash-table safe for
3192 concurrent accesses (but not iteration.) See also:
3193 SB-EXT:WITH-LOCKED-HASH-TABLE, and
3194 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
3195 * optimization: CONCATENATE on strings is an order of magnitude faster
3196 in code compiled with (> SPEED SPACE).
3197 * optimization: SUBSEQ is ~50% faster on lists.
3198 * bug fix: bug 417 fixed -- source location reporting is now more robust.
3199 * bug fix: SUBSEQ on a list will now correctly signal an error if if
3200 END is smaller then START.
3201 * bug fix: SB-PROFILE will no longer report extra consing for nested
3202 calls to profiled functions.
3203 * bug fix: ROOM implementation had bogus fixnum declarations which
3204 could cause type-errors when calling ROOM on large images.
3205 * bug fix: if file compilation is aborted, the partial fasl is now
3206 deleted, and COMPILE-FILE returns NIL as the primary value.
3207 * bug fix: number of thread safety issues relating to SBCL's internal
3208 hash-table usage have been fixed.
3209 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
3210 be returned from its body when the values were being returned
3211 using unknown-values return convection and the W-P-O was wrapped
3212 inside an UNWIND-PROTECT.
3213 * bug fix: sb-posix should now compile again under Windows, enabling
3214 slime to work again.
3216 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
3217 * incompatible change: hash-table accessor functions are no longer
3218 automatically protected by locks. Concurrent accesses on the same hash-table
3219 from multiple threads can give inconsistent results or even corrupt the
3220 hash-table completely. Multi-threaded applications should do their own
3221 locking at the correct granularity. In the current implementation it is
3222 still safe to have multiple readers access the same table, but it's not
3223 guaranteed that this property will be maintained in future releases.
3224 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
3225 and will signal an error at runtime.
3226 * enhancement: SB-THREAD package now exports a semaphore interface.
3227 * enhancement: CONS can now stack-allocate on x86 and
3228 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
3230 * enhancement: nested lists can now be stack allocated on
3231 platforms providing stack allocation support.
3232 * enhancement: dynamic-extent support has been extended to support
3233 cases where there are multiple possible sources for the stack
3235 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
3236 if the mutex is uncontested on Linux.
3237 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
3238 as specified by the CLHS. (thanks to Tobias Rittweiler)
3239 * bug fix: NaN comparison now works on x86-64.
3240 * bug fix: CLOSE :ABORT T on a stream with pending output now
3242 * bug fix: instances of non-standard metaclasses using standard
3243 instance structure protocol sometimes missed the slot type checks
3245 * bug fix: known functions can be inlined in high-debug code.
3247 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
3248 * minor incompatible change: the MSI installer on Windows no longer
3249 associates .lisp and .fasl files with the installed SBCL.
3250 * minor incompatible change: :UNIX is no longer present in *FEATURES*
3251 on Windows. (thanks to Luis Oliviera)
3252 * new feature: SB-CLTL2 contrib module now implements
3253 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
3254 * optimization: scavenging weak pointers is now more efficient,
3255 requiring O(1) instead of O(N) per weak pointer to identify
3256 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
3257 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
3258 method bodies using constant slot-names when the first argument is
3259 a specializer parameter for the method.
3260 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
3261 names, when the class of the instance is a direct instance
3262 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
3263 as slow as the constant slot-name case.)
3264 * optimization: member type construction is now O(N) instead
3266 * optimization: UNION and NUNION are now O(N+M) for large
3267 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
3269 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
3270 now more readable in environments like Slime which display it.
3271 (thanks to Tobias C. Rittweiler)
3272 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
3273 was able to infer the correct argument type for the object on which
3274 the CAS operation was being performed.
3275 * bug fix: copy propagation interfered with parallel assignment
3276 semantics in local calls. (reported by Paul Khuong)
3277 * bug fix: the signed modular fixnum shift compiled to wrong code on
3278 x86 and x86-64. (spotted by a slight modification to some of
3281 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
3282 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
3283 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
3284 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
3286 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
3287 and generic function now print the object identity for anonymous
3288 instances. (thanks to Attila Lendvai)
3289 * enhancement: as an extension to MOP, SBCL now supports SETF of
3290 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
3291 (thanks to Attila Lendvai)
3292 * enhancement: sb-cover has an alternate annotation mode which puts
3293 the form annotations at the car of the form, instead of annotating
3294 it completely. The benefit of this mode is that it shows better
3295 which forms were instrumented by the compiler.
3296 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
3297 by printer control variables. (reported by Dan Corkill)
3298 * bug fix: system leaked memory when delayed output was performed by
3299 the OS in smaller chunks then expected. (thanks to David Smith)
3300 * bug fix: system leaked memory when file streams were not closed
3302 * bug fix: large objects written to slow streams that were modified
3303 after the write could end up with the modified state written to
3304 the underlying file descriptor.
3305 * bug fix: multiple threads operating in parallel on the same stream
3306 could cause buffer-overflows.
3307 * bug fix: source location information is stored correctly
3308 (broken since 1.0.6). This bug would generally show up as the
3309 Slime debugger highlighting the wrong form when the sldb-show-source
3311 * bug fix: Branch forms are again annotated as branches in the sb-cover
3313 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
3314 on x86-64. (reported by Gregory Vanuxem)
3315 * bug fix: EQUALP could return wrong results for structures with raw
3316 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
3317 word). (reported by Vjacheslav Fyodorov)
3318 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
3321 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
3322 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
3323 atomic compare-and-swap operations on threaded platforms.
3324 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
3325 allows assigning a global minimum value to optimization qualities
3326 (overriding proclamations and declarations).
3327 * enhancement: closed over variables can be stack-allocated on x86
3329 * performance bug fix: GETHASH and (SETF GETHASH) are once again
3331 * optimization: slot definition lookup is now O(1). This speeds up
3332 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
3333 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
3334 * optimization: ASSOC and MEMBER can now be open-coded for all
3335 combinations of keyword arguments when second argument is constant
3336 and SPEED >= SPACE. In other cases a specialized version is
3338 * bug fix: using obsoleted structure instances with TYPEP and
3339 generic functions now signals a sensible error.
3340 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
3341 (reported by Kristoffer Kvello)
3342 * bug fix: backtrace construction is now more careful when making
3343 lisp-objects from pointers on the stack, to avoid creating bogus
3344 objects that can be seen by the GC.
3345 * bug fix: defaulting of values in contexts expecting more than 7
3346 variables now works on x86-64. (reported by Christopher Laux)
3347 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
3349 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
3350 as the property-list of a symbol.
3351 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
3352 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
3353 situations requested, are once again file-compileable. (reported
3356 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
3357 * MOP improvement: support for user-defined subclasses of
3358 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
3359 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
3360 the expansion of DEFMETHOD, is responsible for generating a form
3361 which creates a list of specializers when evaluated. Additional
3362 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
3363 debugging and introspective support.
3364 * minor incompatible change: the (unsupported) spinlock interface
3365 has changed: free spinlock now has the value NIL, and a held spinlock
3366 has the owning thread as its value.
3367 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
3368 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
3370 * enhancement: name of a socket-stream is now "a socket" instead of
3371 "a constant string".
3372 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
3373 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
3374 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
3375 for generic functions. (Thanks to Tobias C. Rittweiler)
3376 * optimization: bignum printing speed has been improved by 20-40%
3377 (depending on the bignum size.)
3378 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
3380 * bug fix: the cache used by the CLOS to store precomputed effective
3381 methods, slot offsets, and constant return values is now thread and
3383 * bug fix: generic function dispatch function updating is now thread
3384 and interrupt safe (in the sense that the known issues have been
3386 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
3387 * bug fix: interning EQL-specializers is now thread and interrupt safe.
3388 * bug fix: asdf systems with dependencies to the SB-POSIX or
3389 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
3390 * bug fix: interrupt safety of applicable method computation has been
3393 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
3394 * new contrib: sb-cover, an experimental code coverage tool, is included
3395 as a contrib module.
3396 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
3397 significantly faster.
3398 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3399 produce more efficient code on x86-64 if the compiler can determine
3400 that (+ INDEX <constant>) does not require a bounds check and FOO
3401 has an element type at least 8 bits wide.
3402 * enhancement: a new, experimental synchronous timeout facility is
3403 provided. Refer to SB-SYS:WITH-DEADLINE for details.
3404 * enhancement: when a symbol name conflict error arises, the
3405 conflicting symbols are always printed with a package prefix.
3406 (thanks to Kevin Reid)
3407 * enhancement: stepping is now once again supported on the SPARC and
3408 MIPS platforms. (It is also now more likely to work on CheneyGC
3410 * enhancement: sb-sprof can now also track and report accurate call
3412 * bug fixes: the treatment of non-standard subclasses of
3413 SB-MOP:SPECIALIZER is more correct.
3414 * incompatible change: PURIFY no longer copies the data from the
3415 dynamic space into the static and read-only spaces on platforms
3416 that use the generational garbage collector
3417 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
3419 * bug fix: GC race condition occasionally resulting in crashes with
3420 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
3422 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
3424 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
3425 a STYLE-WARNING to be signalled (regression from 1.0.4.)
3426 * bug fix: an asynchronous interrupt could previously leave the
3427 system running with GC inhibited.
3428 * bug fix: a DECLARE form evaluated at top-level now causes an error
3429 rather than silently (or verbosely) returning NIL.
3430 * bug fix: trying to dissassemble functions compiled at high DEBUG could
3431 result in a error being signalled due to source form lookup errors.
3432 (reported by Peter Graves)
3434 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
3435 * incompatible change: removed writer methods for host-ent-name,
3436 host-ent-addresses -- changing the values did not update the DNS
3438 * minor incompatible change: changed experimental JOIN-THREAD interface
3439 * documentation: the manual now lists reader and writer methods
3440 in class slot documentation sections. (thanks to Richard M Kreuter)
3441 * documentation: unwinding from asyncronous events has been
3442 documented as unsafe.
3443 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
3444 in multithreaded application code.
3445 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
3446 platforms. (thanks to James Anderson for the optimization hint)
3447 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
3449 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
3450 variants no longer cons.
3451 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
3452 their NOT- variants no longer cons.
3453 * optimization: EQUAL hash tables no longer use SXHASH for objects
3454 of all data types, but instead use an EQL hash for types for which
3455 EQUAL is the same as EQL.
3456 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
3457 are significantly faster.
3458 * optimization: new STRING-OUTPUT-STREAM implementation is much
3459 faster for large outputs and conses 30% less on average.
3460 * enhancement: XREF information is now collected for references made
3461 to global variables using SYMBOL-VALUE and a constant argument.
3462 * enhancement: SIGINT now causes a specific condition
3463 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
3464 * bug fix: FILE-POSITION used to signal an error in some cases where
3465 ANSI requires it to return NIL.
3466 * bug fix: ADJUST-ARRAY is now interrupt-safe.
3467 * bug fix: adding and removing fd-handlers is now interrupt-safe.
3468 * bug fix: inlined calls to C now ensure 16byte stack alignment on
3470 * bug fix: bad type declaration in the CLOS implementation has
3471 been fixed. (reported by James Anderson)
3472 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
3473 (thanks to Lutz Euler)
3474 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
3475 required by the CLHS. (reported by Samium Gromoff)
3476 * bug fix: dead unbound variable references now signal an error.
3477 (reported by Marco Monteiro)
3478 * bug fix: / with an unused value was being deleted in safe code.
3479 (thanks to Marco Monteiro and Kevin Reid)
3480 * bug fix: number of characters that can be written onto a single
3481 line in a file is unlimited.
3482 * bug fix: some GC deadlocks caused by asynchronous interrupts have
3483 been fixed by inhibiting interrupts for when GC is disabled.
3484 * bug fix: some interrupt safety issues with GETHASH, (SETF
3485 GETHASH), CLRHASH and REMHASH have been fixed.
3486 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
3487 specifier no longer causes infinite recursion.
3488 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
3489 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
3490 * bug fix: an &environment argument with the correct variable information
3491 is passed to macros that are expanded during byte compilation.
3492 (reported by Samium Gromoff)
3493 * bug fix: a logic error was causing the hash function for bignums to
3494 have excessive amounts of collisions. (reported by Faré Rideau)
3495 * bug fix: modifying the contents of an array could change the return
3496 value of SXHASH on that array, which is only allowed for strings
3497 and bit vectors. (bug introduced in 0.9.16)
3498 * improvement: the x86-64/darwin port now passes all tests (except
3499 for the debugger tests) but should still be considered
3500 experimental until this is fixed.
3501 * improvement: a style-warning is signaled for CASE (etc) clauses with
3502 duplicate keys. (thanks to Kevin Reid)
3503 * improvement: macos/x86 and macos/x86-64 now use mach exception
3504 handlers for dealing with illegal instructions (for trapping and
3505 error handling) and memory protection violations (for GC).
3507 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
3508 * new platform: experimental support for x86-64/darwin (MacOS).
3509 * incompatible change: the thread-safe (on most platforms) getaddrinfo
3510 and getnameinfo sockets functions are used instead of gethostbyaddr
3511 and gethostbyname, on platforms where the newer functions are available.
3512 As a result, the ALIASES field of HOST-ENT will always be NIL on these
3514 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
3515 don't print the startup banner, but behave as if --noinform was passed
3516 as a command line argument. (thanks to Kevin Reid)
3517 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
3518 * optimization: code using alien values with undeclared types is much faster.
3519 * optimization: the compiler is now able to open code SEARCH in more cases.
3520 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
3521 * bug fix: using standardized COMMON-LISP special variables as loop
3522 variables no longer signals bogus package lock violations. (reported
3524 * bug fix: declaring local loop variables to be of a range-limited type
3525 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
3526 (reported by Andras Simon)
3527 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
3528 bugs remain on x86-64.)
3529 * bug fix: the #= and ## reader macros now interact reasonably with
3530 funcallable instances.
3531 * bug fix: type-checks for function arguments were compiled using the
3532 compiler policy settings of the wrong lexical environment (in 1.0.2
3534 * bug fix: SHADOW accepts characters as string designators, as required
3535 by the spec (thanks to Eric Marsden)
3536 * bug fix: fixed GC safety issues when foreign functions are called with
3537 non-base strings as arguments
3538 * bug fix: more consistent error output for fatal-compiler-warnings, like
3540 * bug fix: functions with proper names were showing up as NIL in
3541 backtraces (reported by Edi Weitz, regression in 1.0.2)
3543 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
3544 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
3545 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3546 produce more efficient code on the x86 if the compiler can determine
3547 that (+ INDEX <constant>) does not require a bounds check and FOO
3548 has an element type at least 8 bits wide.
3549 * bug fix: references to undefined variables are handled the same way
3550 in toplevel forms as in the normal compiler
3551 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
3553 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
3554 (thanks to Jon Buller)
3555 * improvement: faster compilation times for complex functions
3556 * improvement: added readlink support to SB-POSIX (thanks to Richard
3559 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
3560 * improvement: experimental support for mach exception handling on
3561 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
3563 * improvement: support for GBK external format.
3564 (thanks to Chun Tian (binghe))
3565 * improvement: the debugger now displays variables that have been closed
3566 over, in code compiled with (DEBUG 2) or higher
3567 * improvement: support for executable cores on NetBSD (thanks to
3569 * new feature: added a RESTART-FRAME debugger command
3570 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
3571 be used to provide an implementation for FILE-POSITION on Gray streams
3572 (thanks to Eric Marsden)
3573 * new feature: add syslog, openlog and closelog support to SB-POSIX
3574 (thanks to Richard Kreuter)
3575 * optimization: the function call overhead in code compiled with
3576 a high DEBUG optimization setting is significantly
3577 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
3578 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
3579 (thanks to Tony Martinez)
3580 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
3581 evaluated once (reported by Kevin Reid)
3582 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
3583 works again (thanks to Kilian Sprotte)
3584 * bug fix: an error is signaled for tagbodies with duplicate tags
3585 (thanks to Stephen Wilson)
3586 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
3587 * bug fix: Win32 port can now handle foreign code unwinding Lisp
3588 stack frames from alien callbacks.
3589 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
3590 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
3591 65k pages (thanks to David Woodhouse)
3592 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
3594 changes in sbcl-1.0.1 relative to sbcl-1.0:
3595 * new platform: FreeBSD/x86-64, including support for threading.
3596 * new feature: the compiler stores cross-referencing information
3597 about function calls (who-calls), macroexpansion (who-macroexpands)
3598 and special variables (who-binds, who-sets, who-references) for code
3599 compiled with (< SPACE 3). This information is available through the
3600 sb-introspect contrib.
3601 * new feature: users may subclass SEQUENCE, and have instances of
3602 these classes interoperate with standard Common Lisp functions if
3603 a number of methods are defined. (This feature is experimental
3604 and the interface subject to change based on feedback from SBCL
3605 users and the general community)
3606 * improvement: sb-sprof traces call stacks to an arbitrary depth on
3607 x86/x86-64, rather than the previous fixed depth of 8
3608 * improvement: another pthread back-end of mutex "pthread-futex".
3609 * bug fix: non-ascii command-line arguments are processed correctly
3610 (thanks to Yaroslav Kavenchuk)
3611 * bug fix: non-required arguments were not passed correctly when a method
3612 defined using DEFMETHOD was called from a mop-generated method using
3613 CALL-NEXT-METHOD (reported by Pascal Costanza)
3614 * bug fix: recursion is now permitted in accessors through
3615 SLOT-UNBOUND. (reported by Pascal Costanza)
3616 * bug fix: an error was signaled at startup if the HOME environment
3617 variable was defined, but had an empty value (reported by Peter Van Eynde)
3618 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
3619 signal a PROGRAM-ERROR, not a BUG.
3620 * bug fix: SB-POSIX:READDIR works when built with large file support.
3621 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
3623 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
3624 for better automatic indentation support. (thanks to Matt Pillsbury)
3625 * optimization: loading generic functions no longer takes O(n^2) time,
3626 proportional to the amount of methods in the generic function
3627 (reported by Todd Sabin and Jeremy Brown)
3628 * optimization: the FIND and POSITION family of sequence functions
3629 are significantly faster on arrays whose element types have been
3631 * improvements to the Windows port:
3632 ** Intermittent heap corruption problems have been fixed. (thanks
3633 to Alastair Bridgewater)
3634 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
3636 ** Lisp is able to unwind foreign exception frames from alien
3637 callbacks. (thanks to Alastair Bridgewater)
3639 changes in sbcl-1.0 relative to sbcl-0.9.18:
3640 * improvement: experimental support for threading on FreeBSD/x86.
3641 (thanks to NIIMI Satoshi)
3642 * improvement: runtime option --dynamic-space-size can be used
3643 to set the size of the dynamic space reserved on startup.
3644 * improvement: floating point modes in effect are now saved in
3645 core, and restored on startup.
3646 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
3647 startup, not time since first call to GET-INTERNAL-REAL-TIME.
3648 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
3649 threads are not running after *SAVE-HOOKS* have run.
3650 * improvement: writes to CLOS instance slots are type-checked in code
3651 compiled with (SAFETY 3)
3652 * improvement: floating-point exception handling on FreeBSD (thanks to
3654 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
3655 (thanks to Zach Beane)
3656 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
3658 * improvement: added support for the Shift-JIS external format.
3659 (contributed by NIIMI Satoshi)
3660 * improvement: callbacks are supported on Linux/PPC. (thanks to
3662 * bug fix: compiler bug triggered by a (non-standard) VALUES
3663 declaration in a LET* was fixed. (reported by Kaersten Poeck)
3664 * bug fix: file compiler no longer confuses validated and already
3665 dumped structurres. (reported by Kaersten Poeck)
3666 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
3667 fill-pointer signals a type-error as required. (thanks to
3669 * bug fix: disassemly of funcallable instances works.
3670 * bug fix: single stepping on PPC.
3671 * bug fix: fix thread-safety problems in the type system (generally
3672 manifesting as nonsensical errors like "STRING is a bad type specifier
3673 for sequences" or "The value 1 is not of type FIXNUM")
3674 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
3675 (reported by Josip Gracin)
3676 * bug fix: an error is signaled for attempts to displace arrays with
3677 incompatible element types (thanks to Mario Mommer)
3678 * bug fix: more correct handling of wide characters in debug info
3679 (bug reported by Attila Lendvai and fixed by Juho Snellman)
3680 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
3681 and don't cause extra consing
3682 * optimization: MAP and MAP-INTO are significantly faster on vectors
3683 whose elements types have been declared.
3684 * Improvements to SB-SPROF:
3685 ** Support for allocation profiling
3686 ** Reduced profiling overhead, especially for long profiling runs
3687 * Improvements to the Windows port:
3688 ** floating point exceptions are now reported correctly.
3689 ** stack exhaustion detection works partially.
3690 ** more accurate GET-INTERNAL-REAL-TIME.
3691 ** better RUN-PROGRAM behaviour in case of errors in the child
3693 ** PROBE-FILE now simplifies pathnames correctly.
3694 ** DIRECTORY now works correctly with :WILD-INFERIORS.
3695 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
3696 1st 1970 (although time timezone data will be unreliable).
3697 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
3699 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
3700 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
3701 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
3703 * bug fix: two potential GC deadlocks affecting threaded builds.
3704 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
3705 returns T (reported by Anton Kazennikov)
3706 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
3707 with non-variable places
3708 * bug fix: remove a race condition in the setting of
3709 funcallable-instance functions, this should make threaded CLOS
3710 code more stable against memory faults.
3711 * bug fix: corruption of specials when unbinding is interrupted by an
3712 asynchronous unwind (reported by Hannu Koivisto)
3713 * improvement: the debugger will now also display local variables that
3714 are only used once, for code compiled with a DEBUG optimization quality
3717 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
3718 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
3719 * incompatible change: External-format support for FFI calls. The
3720 SB-ALIEN:C-STRING no longer implies an ASCII
3721 external-format. Instead the string is subject to external-format
3722 conversion. Additionally return values of type SB-ALIEN:C-STRING
3723 are by default of type (SIMPLE-ARRAY CHARACTER), not
3724 SIMPLE-BASE-STRING. For an alien type that behaves like the old
3725 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
3726 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
3727 * incompatible change: SB-EXT package no longer contains the
3728 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
3729 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
3731 * incompatible change: the single-stepper is no longer available
3732 on Alpha, Mips and Sparc platforms.
3733 * minor incompatible change: the direct superclasses of
3734 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
3735 not (STANDARD-OBJECT FUNCTION). This makes the
3736 class-precedence-lists of GENERIC-FUNCTION and
3737 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
3739 * minor incompatible change: the default stream external format on
3740 non-unicode SBCL is no longer detected from the locale, but is always
3742 * new feature: Add a version of evaluator that uses an interpreter instead
3743 of the compiler. EVAL still uses the compiler by default, to switch it
3744 to use the interpreter, set the value of the variable
3745 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
3746 * minor incompatible change: the single-stepper REPL has been merged
3747 with the normal debugger (see the "Stepping" heading of the debugger help
3748 for more details). The debugger command STEP will no longer switch
3749 to the single-stepper REPL.
3750 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
3751 for a type now works.
3752 * bug fix: loading of default sysinit file works. (thanks to Leonid
3754 * bug fix: better detection of circularities in the file-compiler.
3755 (reported by Marco Monteiro)
3756 * bug fix: the CL pathname functions now work with files that have
3757 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
3758 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
3759 systems with Unix98 pty semantics.
3760 * bug fix: ASDF-INSTALL will now work with bsd tar.
3761 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
3763 * bug fix: timers expiring in dead threads no longer cause a
3764 type-error (reported by Paul "Nonny Mouse").
3765 * bug fix: thanks to more lightweight single-stepper instrumentation,
3766 code compiled with (DEBUG 3) will compile and execute significantly faster,
3767 and will have more accurate type-inferencing than before
3768 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
3769 whose bindings are modified
3770 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
3771 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
3772 ** replace dummy implementations of CL:MACHINE-INSTANCE and
3773 CL:SOFTWARE-VERSION with proper version
3775 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
3776 * feature: implemented the READER-METHOD-CLASS and
3777 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
3778 as specified by AMOP.
3779 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
3781 * optimization: faster LOGCOUNT implementation on x86 and x86-64
3782 (thanks to Lutz Euler)
3783 * optimization: hashing of general arrays and vectors has been
3784 improved. (reported by Any Fingerhut)
3785 * enhancement: SB-INTROSPECT is now able to find definitions of
3786 profiled functions. (thanks to Troels Henriksen)
3787 * enhancement: compiler-macro expansion applies now to FUNCALL forms
3788 as well, allowing compiler-macros for SETF-functions to expand.
3789 * enhancement: step-instrumentation no longer wraps known
3790 single-value functions with multiple-value context, allowing
3791 better type inference.
3792 * fixed bug #337: use of MAKE-METHOD in method combination now works
3793 even in the presence of user-defined method classes. (reported by
3794 Bruno Haible and Pascal Costanza)
3795 * fixed bug #339(c): if there are applicable methods not part of any
3796 long-form method-combination group, call INVALID-METHOD-ERROR.
3797 (reported by Bruno Haible)
3798 * fixed bug #361: the :FUNCTION initarg in the protocol for
3799 initialization of methods can now be used to override
3800 internally-produced optimized functions. (reported by Bruno
3802 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
3803 system-provided lambda expression no longer cause warnings about
3804 unbound #:|pv-table| symbols.
3805 * bug fix: improved the handling of type declarations and the
3806 detection of violations for keyword arguments with non-constant
3808 * bug fix: potentially erronous calls to PATHNAME and
3809 MERGE-PATHNAMES were being flushed in some cases.
3810 (reported by Richard Kreuter)
3811 * bug fix: compiled calls to TYPEP were mishandling obsolete
3812 instances. (reported by James Bielman and Attila Lendvai)
3813 * bug fix: format strings with ~> without matching ~< no longer
3814 trigger an AVER, but signal an understandable error instead.
3815 (reported by Antonio Martinez)
3816 * bug fix: specifying an output-file without a pathname-type for
3817 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
3818 of input-file instead of "fasl". (reported by Robert Dodier)
3819 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
3820 (reported by James Y Knight).
3821 * bug fix: compiler-macros-function did not consider the environment
3822 argument for shadowing by local functions.
3823 * bug fix: compiler-macros expansion was inhibited by local INLINE
3825 * bug fix: inline expansions of known functions were subject to
3826 step-instrumentation in high debug policies, leading to problems
3827 with type-inference.
3828 * bug fix: compiler failed to differentiate between different CONS
3829 types in some cases.
3830 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
3831 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
3832 * bug fix: #368: incorrect use of expressed vs. upgraded array
3834 * bug fix: #306a: more precise unions of array types.
3835 * thread-safety improvements:
3836 ** CONDITION-WAIT could return early on Linux, if the thread was
3837 interrupted and subsequently continued with SIGCONT.
3838 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
3840 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
3841 * added support for the ucs-2 external format. (contributed by Ivan
3843 * minor incompatible change: pretty printing of objects of type
3844 (cons symbol) is, in the default pprint-dispatch-table, now
3845 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3847 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3848 called later in a class's lifetime, possibly as late as when the
3849 first instance of the class is created. Previously,
3850 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3851 class became finalizeable.
3852 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3853 for multibyte external-format streams. (thanks to "vbzoli")
3854 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3855 with :ALLOCATION :CLASS inherited from superclasses of the
3857 * fixed bug: anonymous classes can now be created using the :NAME
3858 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3859 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3860 * fixed bug: core-files saved with :EXECUTABLE T can again be
3861 executed when SBCL_HOME isn't set. (reported by James Knight)
3862 * fixed bug: toplevel LOCALLY forms with declarations could
3863 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3864 * fixed bug: printing from several different threads using different
3865 values of *print-case* could cause invalid output, due to
3866 some internal special variables of the printer not being bound
3867 thread-locally (reported by Max Mikhanosha)
3868 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3869 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3870 (reported by Pascal Costanza)
3871 * fixed bug: FINALIZE-INHERITANCE is called from
3872 REINITIALIZE-INSTANCE on classes when the class has previously
3873 been finalized, as required by AMOP.
3874 * minor code generation optimizations:
3875 ** better register allocation in CLOS dispatching functions
3876 ** overflow detection when coercing signed bytes to fixnums on x86-64
3877 ** is now implemented with one IMUL instruction instead of three shifts
3878 ** more efficient bit-vector access on x86 and x86-64
3879 ** more efficient access to raw structure slots on x86 and x86-64
3880 * fixed some bugs revealed by Paul Dietz' test suite:
3881 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3882 return its argument.
3884 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3885 * feature: thread support on Solaris/x86, and experimental thread support
3887 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3889 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3890 default method for SLOT-UNBOUND.
3891 * minor incompatible change: prevent the user from specializing the
3892 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3893 somewhat counter to the intent of the protocol, I (CSR) think, and
3894 additionally it just doesn't work in SBCL as currently
3895 implemented, thanks to optimizations (that are always valid for
3896 the other three SLOT-VALUEish functions, but not for the setter).
3897 * minor incompatible change: the :SB-LDB feature is now enabled by
3898 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3899 the low-level debugger.
3900 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3901 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3902 down to an SB-SYS:FD-STREAM, allowing direct communication in
3903 more cases. Temporary files and pipes are still used as a fallback
3905 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3906 on the non-reentrant C functions localtime(3) and gmtime(3).
3907 * bug fix: global optimization policy was not visible in LOCALLY and
3909 * bug fix: class objects can be used as specializers in methods.
3910 (reported by Pascal Costanza)
3911 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3912 with a type error. (reported by blitz_ on #lisp)
3913 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3914 failed with a type error. (reported by Pascal Bourguignon)
3915 * bug fix: merging pathnames against defaults with :DIRECTORY
3916 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3917 (reported by James Y Knight)
3918 * bug fix: saving large (>2GB) cores on x86-64 now works
3919 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3920 constant index and a (simple-array (signed-byte 32)) array
3921 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3922 error (patch by Robert J. Macomber)
3923 * feature: TIME now displays the amount of run-time spent in GC
3924 * bug fix: The debugger now does a better job of respecting
3925 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3926 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3927 workaround for bug 403.)
3928 * bug fix: floating point exception handling now works on FreeBSD
3929 (thanks to NIIMI Satoshi)
3930 * fixed some bugs revealed by Paul Dietz' test suite:
3931 ** MISC.641: LET-conversion were not supposed to work in late
3933 * improvements to the Win32/x86 port:
3934 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3935 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3937 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3938 * new feature: source path information is generated for macro-expansion
3939 errors for use in IDE's like Slime (thanks to Helmut Eller)
3940 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3941 * bug fix: compiler does not loop forever on an invalid type in
3943 * improvement: compilation of most CLOS applications is significantly
3945 * optimization: added a limited bytecode compiler for simple toplevel
3946 forms, speeding up compilation and FASL loading
3947 * bug fix: the statistical profiler now properly distinguishes anonymous
3950 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3951 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3952 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3953 into subclasses of the finalized class. Now user calls to
3954 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3955 system return before any subclasses are finalized.
3956 * minor incompatible change: The reader no longer ignores errors
3957 regarding non-existent packages in #+ and #- feature tests.
3958 * new feature: command line options --no-sysinit, --no-userinit to
3959 inhibit loading the corresponding init files
3960 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3961 for sending data through UDP sockets (thanks to François-René Rideau)
3962 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3963 error is signalled instead (thanks to François-René Rideau)
3964 * minor incompatible change: Error signalling behaviour of lexical
3965 operations violating package locks has changed slightly. Refer to
3966 documentation on package locks for details.
3967 * enhancement: EVAL can process IF-expressions without resorting to the
3969 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3970 constant-folded properly due to missing out-of-line functions.
3971 (reported by Mika Pihlajamäki)
3972 * bug fix: LISTEN sometimes returned T even in cases where no data was
3973 immediately available from the stream
3974 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3975 were reversed. (reported by Levente Mészáros)
3976 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3977 when given a vector displaced to an adjustable array. (reported
3979 * bug fix: derivation of float boundaries from numbers outside the
3980 appropriate float range (reported by John Wiseman)
3981 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3983 * bug fix: precomputing cache entries for generic functions with
3984 some subclasses of specializers as yet invalid does not attempt to
3985 fill a cache line with a negative offset. (reported by Levente
3987 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3988 allow condition class objects as arguments to DOCUMENTATION and
3989 (SETF DOCUMENTATION); only find and set documentation for
3990 structure names for the STRUCTURE doc-type. (suggested by Gary
3992 * improvements to the Win32/x86 port:
3993 ** (user-homedir-pathname) and default initialization file
3994 locations now know about the user's "Documents and Settings"
3995 directory (thanks to Yaroslav Kavenchuk)
3996 ** run-program is implemented (thanks to Mike Thomas)
3997 ** sockets support (thanks to Timothy Ritchey)
3998 ** better backtrace support (thanks to Alastair Bridgewater)
3999 ** sb-grovel supported
4000 ** asdf-install and sb-posix work somewhat
4001 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
4002 * improvements to the Solaris/x86 port:
4003 ** works on Solaris 11/Solaris Express
4004 ** floating-point exception handling support
4005 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
4006 * fixed some bugs revealed by Paul Dietz' test suite:
4007 ** REMOVE-METHOD returns its generic function argument even when
4008 the method is not one of the generic functions' methods.
4009 ** objects declared as MEMBER types can be admissible arguments to
4010 structure accessors.
4011 ** printing characters should simply be printed by the FORMAT ~:C
4013 ** compiler failure when compiling functions with hairy constant
4014 defaults for optional parameters.
4015 ** compiler produces wrong code when MAYBE-INLINE-expanding a
4016 function, which is already optimized.
4018 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
4019 * new platform: experimental support for SBCL x86/Darwin, including
4020 MacOS X 10.4.5 on Intel.
4021 * new feature: Unicode character names are now known to the system
4022 (through CHAR-NAME and NAME-CHAR).
4023 * new feature: the filesystem location of SBCL's core file is
4024 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
4025 * minor incompatible change: the contrib modules SB-POSIX and
4026 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
4027 this change is to make it easier to distribute
4028 location-independent binaries.
4029 * bug fix: as implied by AMOP, standardized classes no longer have
4030 slots named by external symbols of public packages. (reported by
4032 * optimization: calling functions via constant symbols -- as in
4033 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
4034 via the function object as in (FUNCALL #'FOO).
4035 * optimization: on x86 and x86-64, the calling convention for the
4036 case of dealing with an unknown number of values has been altered
4037 to be friendlier to the prediction heuristics implemented,
4038 particularly with reference to CALL and RET pairing. (thanks to
4039 Alastair Bridgewater)
4040 * optimization: on x86, the code for access to thread-local symbol
4041 values and binding/unbinding of thread-local symbols is smaller.
4042 (thanks to Alastair Bridgewater)
4043 * enhancement: CONSTANTP is now able to determine constantness of
4044 more complex forms, including calls to constant-foldable standardized
4045 functions and some special forms beyond QUOTE.
4046 * fixed bug: occasional GC crashes on Solaris/x86
4047 * optimization: x86-64 supports stack allocation of results of simple
4048 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
4049 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
4050 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
4051 (thanks to James Knight)
4052 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
4053 by the standard (thanks to Stephen Compall)
4055 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
4056 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
4057 be used for bundling the runtime and the core file into one
4058 executable binary. This feature is not currently supported on all SBCL
4059 platforms. (thanks to James Bielman and NIIMI Satoshi)
4060 * new feature: a generational or ephemeral garbage collector is now
4061 the default on the PowerPC platform (both Linux and Darwin). The
4062 old Cheney (stop and copy) collector is a build-time option.
4063 (thanks to Cyrus Harmon, after Raymond Toy)
4064 * minor incompatible change: the method by which SBCL finds its
4065 contributed modules has changed; it no longer relies on symbolic
4066 links from an $SBCL_HOME/systems directory, but searches directly
4067 in the subdirectories of $SBCL_HOME.
4068 * enhancement: the dynamic heap size on the Linux/PPC platform is
4069 markedly larger, even using the older Cheney garbage collector.
4070 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
4071 certain complicated string types. (reported by Gary King)
4072 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
4073 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
4074 * fixed bug: DOCUMENTATION on structures no longer signals an
4075 error if no structure type of the right name exists. (reported by
4077 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
4078 applicable non-standard primary or :AROUND method on
4079 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
4080 no longer cause unbound variable errors. (reported by Kevin Reid)
4081 * fixed bug: metacircle resolution in cases where methods have slots
4082 added before the slots from STANDARD-METHOD. (reported by Jean
4084 * fixed bug: the Power PC assembly code for calling into lisp
4085 sometimes computed its return address wrongly (depending on the
4086 15th bit of the address, fixed at link time). This used to
4087 manifest itself in a segmentation violation while building PCL.
4088 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
4089 many others over the years)
4090 * fixed bug: ROOM no longer reports silly numbers for stack usage if
4091 the stack pointer (treated as a signed integer) is negative.
4092 (thanks to Peter van Eynde)
4094 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
4095 * new platform: experimental support for the Windows operating
4096 system has been added. (thanks to Alastair Bridgewater)
4097 * fixed several bugs in and robustified the PPC FFI (including
4098 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
4099 * bug fix: allow non-simple string symbol names (reported by Paul
4101 * bug fix: interrupt handling on NetBSD (thanks to Richard M
4103 * bug fix: saving a core corrupted callbacks on x86/x86-64
4104 * bug fix: closed a loophole in metacircularity detection and
4105 grounding in the PCL implementation of CLOS.
4106 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
4107 (reported by tomppa on #lisp)
4108 * bug fix: clear the direction flag on Lisp -> C transitions, as
4109 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
4110 (reported by Andrej Grozin and Hendrik Maryns)
4111 * optimization: major improvements to GC efficiency on GENCGC platforms
4112 * optimization: faster implementation of EQUAL
4113 * optimization: emit more efficient opcodes for some common
4114 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
4115 * optimization: several other minor code-generation improvements on x86-64
4116 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
4118 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
4119 * minor incompatible change: (SETF CLASS-NAME) and (SETF
4120 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
4121 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
4122 by ANSI as a generic function, and for consistency (SETF
4123 GENERIC-FUNCTION-NAME) is treated likewise.
4124 * fixed bug #233.b: make constraint propagation notice when a variable
4125 value is changed after it is referenced but before it is used
4126 * fixed bug #296: no more arbitrary behaviour from filenames with
4127 odd characters as --load arguments. (reported by Adam Warner)
4128 * fixed bug #390: :CHARACTER-SET pathname components now work as
4129 expected. (reported by Tim Daly Jr)
4130 * fixed bug #391: complicated :TYPE intersections in slot
4131 definitions no longer cause an error in PCL internals.
4132 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
4133 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
4134 returning the number of octets which would be written to the
4135 file-stream. (thanks to Robert J. Macomber)
4136 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
4137 arguments to the internal stream functions. (thanks to David
4139 * bug fix: stack exhaustion is now handled on the x86/SunOS
4140 platform. (thanks to Daisuke Homma)
4141 * bug fix: more accurate ROOM results on GENCGC platforms
4142 * optimization: improved type inference for arithmetic-for
4143 index variables in LOOP
4144 * optimization: faster floating-point SQRT on x86-64
4145 * fixed some bugs revealed by Paul Dietz' test suite:
4146 ** DOCUMENTATION returns NIL instead of "" for method combinations
4147 that don't have a docstring
4149 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
4150 * minor incompatible change: (SETF CLASS-NAME) and (SETF
4151 GENERIC-FUNCTION-NAME) are no longer generic functions, and
4152 therefore are not customizeable by user code (as seems to be at
4153 least permitted and maybe required by AMOP). As a consolation,
4154 however, the SBCL implementation of these functions now calls
4155 REINITIALIZE-INSTANCE as specified by AMOP.
4156 * bug fix: slot-definition documentation is propagated as per ANSI
4157 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
4158 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
4159 argument, as do eslotd initialization methods. (from Pascal
4160 Costanza's "Closer" project)
4161 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
4162 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
4164 * bug fix: it is now possible to have more than one subclass of
4165 STANDARD-GENERIC-FUNCTION without causing stack overflow.
4166 (reported by Bruno Haible, Pascal Costanza and others)
4167 * bug fix: the dependent update protocol now works for generic
4168 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
4169 and Pascal Costanza)
4170 * bug fix: condition-class instances corresponding to
4171 DEFINE-CONDITION forms are now created eagerly. (reported by
4172 Kalle Olavi Niemitalo on comp.lang.lisp)
4173 * bug fix: floating point printing is more accurate in some
4174 circumstances. (thanks to Simon Alexander)
4175 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
4176 merged with *DEFAULT-PATHNAME-DEFAULTS*.
4177 * bug fix: callbacks on OS X now preserve stack-alignment.
4178 (thanks to Cyrus Harmon)
4179 * enhancement: the x86-64 disassembler is much better at
4180 disassembling SSE instructions. (thanks to Lutz Euler)
4181 * enhancement: CHECK-TYPE on a variable now allows type-inference
4182 (thanks to Vincent Arkesteijn)
4183 * optimization: improved performance of EUC-JP external format.
4184 (thanks to NIIMI Satoshi)
4185 * optimization: performance improvements to IO on file streams of
4186 :ELEMENT-TYPE CHARACTER
4187 * optimization: much faster memory allocation on x86-64
4188 * optimization: faster garbage collections (latency and throughput)
4190 * optimization: faster bignum subtraction and division on x86 and x86-64
4191 (thanks to Lutz Euler)
4192 * optimization: more accurate type-inference for loops that use a
4193 floating point index variable or a negative step.
4195 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
4196 * bug fix: add a workaround to SBCL looping infinitely at startup on
4197 Linux kernels with apparently buggy implementations of personality().
4198 (thanks to Svein Ove Aas)
4199 * bug fix: Unicode symbols are correctly printed in LDB backtraces
4200 (thanks to David Lichteblau)
4201 * bug fix: local bindings shadow global symbol macros for
4202 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
4203 * optimization: non-open coded uses of numeric comparison operators
4204 (e.g. >) no longer cons when called with more than one parameter
4205 on platforms supporting dynamic-extent allocation.
4206 * enhancement: saving cores with foreign code loaded is now supported
4207 on MIPS/Linux in addition to the previously supported platforms.
4208 * bug fix: FIND-RESTART now tests for activity, not applicability when given
4209 a restart object as identifier. (reported by Helmut Eller for CMUCL)
4210 * bug fix: division by zero in sb-sprof when no samples were collected
4211 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
4212 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
4213 (thanks to Alexander Kjeldaas)
4214 * new feature: ignoring the return values of destructive functions
4215 like NREVERSE signals a compile-time style-warning.
4216 (thanks to Kevin Reid)
4217 * new feature: the alignment of alien structure fields can be
4218 explicitly specified. (thanks to Cyrus Harmon)
4219 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
4220 and dump core on SIGQUIT
4222 ** incompatible change: threads do not inherit values of specials
4223 from their parents (see manual)
4224 ** bug fix: threads stacks belonging to dead threads are freed by the
4225 next exiting thread, no need to gc to collect thread stacks anymore
4226 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
4227 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
4228 ** bug fix: dynamic variable and thread start related gc lossage
4229 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
4231 * fixed some bugs revealed by Paul Dietz' test suite:
4232 ** SUBTYPEP is slightly more accurate on heinously complicated
4233 CONS types where some of the members have uncertain (in the
4234 NIL, NIL sense) type relationships to each other.
4236 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
4237 no longer purified unless :PURIFY T is explicitly specified.
4238 ** Non-purified cores are significantly smaller than before
4240 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
4241 * new feature: timers based on Zach Beane's excellent timer package
4242 * added support for the following external formats: koi8-u,
4243 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
4244 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
4245 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
4246 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
4247 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
4248 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
4249 * incompatible change: a threaded SBCL will no longer revert to
4250 non-threaded mode on non-NPTL systems, but refuse to start entirely.
4251 * bug fix: interrupts are disabled until startup is complete; no
4252 more sigsegvs when receiving a signal to soon
4253 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
4255 * bug fix: add a workaround for the memory randomization features in
4256 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
4257 workaround will only be in effect on systems with the proc filesystem
4259 * bug fix: printing objects of type HASH-TABLE signals a
4260 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
4262 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
4263 have been running for over 50 days. (reported by Gilbert Baumann)
4264 * bug fix: the logic for getting names of functions gets less
4265 confused when confronded with alternate-metaclass
4266 funcallable-instances. (reported by Cyrus Harmon)
4267 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
4268 consistent, even on internal alternate-metaclass objects.
4269 * bug fix: flush closure information collected by physical
4270 environment analysis prepass before the main pass. (bug reported
4272 * bug fix: compiler pack phase does not modify a hashtable, which is
4273 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
4274 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
4275 may be expanded. (reported by Alexander <malishev> on c.l.l)
4276 * bug fix: no more style-warnings when compiling code using LAST
4277 under high-SPEED low-SPACE settings. (reported by David Wallin
4279 * fixed some incompatibilities between SBCL's MOP and the MOP
4281 ** the METAOBJECT class is now implemented;
4282 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
4283 STANDARD-OBJECT, as required;
4284 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
4285 now compatible (as required by VALIDATE-SUPERCLASS); there
4286 remains a consistency requirement over the presence or absence
4287 of the FUNCTION class in the superclass list of finalized
4288 classes; see the manual for more details;
4289 ** the :AROUND method for COMPUTE-SLOTS on
4290 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
4291 requested slot ordering.
4293 ** bug fix: parent thread now can be gc'ed even with a live
4295 ** bug fix: binding a special with PROGV to no value is not
4296 the same as that symbol not having been bound (thanks to
4298 ** bug fix: binding specials is thread safe (thanks to
4300 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
4301 and SB-SPROF do not die with 'no handler for signal XX in
4302 interrupt_handle_now(..)' anymore
4303 ** bug fix: WITH-TIMEOUT works with multiple running threads
4304 * fixed some bugs revealed by Paul Dietz' test suite:
4305 ** ENSURE-GENERIC-FUNCTION should take a method class object for
4306 the :method-class keyword argument.
4308 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
4309 * new port: the Solaris operating system on x86 processors is now
4310 mostly supported, though some rough edges in the environment
4311 remain. (thanks to Daisuke Homma)
4312 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
4313 space for its heap. (thanks to Thiemo Seufer)
4314 * optimization: SBCL on MIPS platforms now supports dynamic-extent
4315 closures. (thanks to Thiemo Seufer)
4316 * minor incompatible change: eof selects abort in the debugger.
4317 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
4318 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
4320 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
4321 deprecated, and will go away in a future revision of SBCL.
4322 * minor incompatible change: GC-ON and GC-OFF are no longer
4323 implemented with a counter, it does not matter how many times gc
4324 is switched on or off
4325 * bug fix: discriminating functions for generic function classes
4326 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
4327 make invalid assumptions about method precedence order. (reported
4329 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
4330 platforms. (thanks to Thiemo Seufer)
4331 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
4332 * bug fix: correct pathname printing with printer escaping is on.
4333 (thanks to Kevin Reid)
4334 * bug fix: complex VOP definitions in "user-space" no longer trigger
4335 package locks. (reported by Zach Beane)
4336 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
4337 for funcallable-instance functions, and is no different from
4339 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
4340 characters in the current readtable. (reported by Nicholas Neuss)
4341 * bug fix: SUBTYPEP on various CONS types returns more a more
4342 accurate acknowledgment of its certainty.
4343 * optimizations: REMOVE-DUPLICATES now runs in linear time on
4344 lists in some cases. This partially fixes bug 384.
4345 * flush all standard streams before prompting in the REPL and the
4347 * bug fix: signal handling and triggering gc do not conflict
4348 directly anymore, in particular a high frequency sb-sprof does
4349 not prevent gc from running
4350 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
4351 approximation for timezone and DST information between the
4352 universal time epoch and the smallest negative 32-bit time_t.
4353 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
4354 year 1899 so long as the encoded time is non-negative.
4355 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
4356 the correct answer for non-constant rotate amounts when performing
4357 an inline 32-bit rotation.
4359 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
4360 there is only one thread in the session
4361 ** bug fix: memory leak for streams created in one thread and
4362 written to in another
4363 ** bug fix: lockup when compiled with gcc4
4364 ** bug fix: race that allows the gc to be triggered when gc is
4366 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
4367 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
4369 ** bug fix: finished threads are gc'ed properly
4370 * fixed some bugs revealed by Paul Dietz' test suite:
4371 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
4372 has arguments with a different set of applicable methods from
4373 the orignal arguments.
4374 ** The type error thrown by MAP now has a correct expected-type
4376 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
4377 name a compiled function.
4378 ** Three MISC tests where a large bignum was improperly coerced to
4379 a float that couldn't represent that bignum during type
4380 derivation were fixed.
4381 ** SUBTYPEP can now handle types involving the negation of a
4382 list-form FUNCTION type.
4383 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
4384 as (COMPLEX (AND RATIO (NOT FIXNUM))).
4385 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
4387 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
4388 * New feature: Experimental support for bivalent streams: streams
4389 opened with :element-type :default now allow character and binary
4390 (unsigned-byte 8) I/O
4391 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
4392 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
4394 * bug fix: no more highly sporadic "couldn't check whether ~S is
4395 readable" when reading a stream and an interrupt hits in the middle
4396 of a select system call
4397 * compiler better recognizes complex arrays (reported by Eduardo
4399 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
4400 for variables on SBCL built with linkage-tables. (reported by Luis
4402 * various error reporting improvements.
4403 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
4404 (Thanks to Thiemo Seufer)
4405 * bug fix: nested reader invokations work correctly
4406 * bug fix: it is possible to have simultaneous references to foreign
4407 code and foreign data with the same name.
4409 ** added x86-64 support
4410 ** incompatible change: the threading api now works with thread
4411 objects instead of thread ids
4412 ** bug fix: threads are protected from signals and interruption when
4413 starting up or going down
4414 ** bug fix: a race where an exiting thread could lose its stack to gc
4415 ** bug fix: don't halt on infinite error in threads if possible
4416 ** fixed numerous gc deadlocks introduced in the pthread merge
4417 ** bug fix: fixed thread safety issues in read and print
4418 ** bug fix: debugger doesn't hang on session lock if interrupted at
4419 an inappropriate moment
4420 ** bug fix: run-program is now thread safe(r)
4421 ** bug fix: inner with-recursive-lock no longer releases the mutex
4422 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
4423 * fixed some bugs revealed by Paul Dietz' test suite:
4424 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
4425 EXPECTED-TYPE slots filled.
4426 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
4428 ** MAKE-CONDITION accepts classes as type-designators.
4429 ** COMPILE may never return NIL.
4430 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
4431 range before calling Unix time functions
4433 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
4434 * numerous signal handling fixes to increase stability
4435 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
4436 * minor incompatible change: we now correctly canonize default
4437 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
4438 as per the MOP, rather than the historical (INITARG INITFUNCTION
4439 INITFORM). (reported by Bruno Haible)
4440 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
4441 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
4442 for more information.
4443 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
4444 pathname is a directory pathname.
4445 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
4446 * dynamic space size on PPC has been increased to 768Mb. (thanks to
4448 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
4449 :METACLASS argument in addition to a class name. (reported by
4450 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
4451 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
4452 (reported by Bruno Haible; patch from Gerd Moellmann)
4453 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
4455 * bug fix: more cleanups to the floating point exception handling on
4456 x86-64 (thanks to James Knight)
4457 * bug fix: the compiler does not try to constant fold calls of
4458 COERCE and BIT-* functions when they return freshly constructed
4459 objects. (reported by Nikodemus Siivola and Paul Dietz)
4460 * optimization: improved the MIPS versions of generic (in the
4461 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
4462 * optimization: direct conversion of (unsigned-byte 32) to floats on
4463 the PowerPC platform.
4464 * optimization: structure instances with raw slots now use less
4465 memory, and probably show better memory locality. (thanks to
4467 * optimization: DYNAMIC-EXTENT declarations for lists and closures
4468 are treated as requests for stack allocation on the x86-64,
4469 Alpha-32, PPC and SPARC platforms.
4470 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
4471 the wrong file descriptor; implementation of SOCKET-OPEN-P.
4472 (thanks to Tony Martinez)
4474 ** gcing a dead thread can no longer lead to lockups
4475 ** threads block signals until they are set up properly
4476 ** errno is no longer shared by threads
4477 ** interrupt-thread restores the eflags register on x86
4478 ** fixed some lockups due to gc/thread interaction
4479 * fixed some bugs revealed by Paul Dietz' test suite:
4480 ** invalid dotted lists no longer raise a read error when
4481 *READ-SUPPRESS* is T
4482 ** signal an error if a symbol that names a declaration is used
4483 as the name of a type, or vice versa
4484 ** allow using the (declare (typespec var*)) abbreviation for
4485 (declare (type typespec var*)) with all type specifiers
4486 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
4487 ** always return NIL from PPRINT-POP when OBJECT is NIL
4488 ** don't signal errors when pretty-printing malformed LABELS,
4489 FLET or MACROLET forms
4490 ** declarations in a DOLIST body are also in scope for the
4492 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
4494 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
4497 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
4498 * fixed cross-compiler leakages that prevented building a 32-bit
4499 target with a 64-bit host compiler.
4500 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
4501 opened with :IF-EXISTS :OVERWRITE.
4502 * fixed bug 281: error for an invalid qualifier in a short-form method
4503 combination method is not signalled until the faulty method is called.
4504 * bug fix: iteration variable type inferrer failed to deal with open
4505 intervals. (reported by Alan Shields)
4506 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
4507 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
4508 or more runtime options were provided to the sbcl binary.
4509 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
4510 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
4511 * optimization: there's now a fast-path for fixnum arguments in the
4512 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
4513 * optimization: the code generated on x86-64 is more compact thanks
4514 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
4515 * bug fix: floating-point exception handling now partly works on
4516 x86-64. (Thanks to James Knight)
4517 * improvement to the MIPS backend from Thiemo Seufer: C-style
4518 64-bit long long arguments and return values to alien functions
4520 * fixed some bugs revealed by Paul Dietz' test suite:
4521 ** the type-error signalled from WARN has a filled-in DATUM slot.
4522 ** the type-error required when a stream is not associated with
4523 a file has the stream as its datum.
4524 ** type-errors on single-floats on x86-64 no longer have
4525 :INVALID-OBJECT as the datum
4526 ** the type-errors signalled for invalid function names now have
4527 a correct expected type
4528 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
4529 for structures defined with a :TYPE. Documentation strings for
4530 typed structures are no longer immediately discarded
4531 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
4532 broadcast streams and synonym streams. FILE-LENGTH now also works
4533 on broadcast streams.
4535 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
4536 * incompatible change: the --noprogrammer option, deprecated since
4537 version 0.7.5, has been removed. Please use the equivalent
4538 --disable-debugger option instead.
4539 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
4541 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
4542 inoperational for a while now) has been completely removed.
4543 * null lexical environments are now printed as #<NULL-LEXENV>,
4544 significantly reducing the amount of clutter in typical backtraces.
4545 * documentation on weak pointers, finalization, and after GC hooks
4546 has been added to the manual.
4547 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
4548 as other specialized array types, is much faster. SUBSEQ and
4549 COPY-SEQ on such arrays have also been sped up.
4550 * optimization: EQL is now more efficient when at least other argument
4551 is known to be of type (OR FIXNUM (NOT NUMBER)).
4552 * fixed bug: the runtime is now less vulnerable to changes in the
4553 size of the SBCL object on OS X, and virtual memory is reserved for
4554 all spaces that need to be at a fixed address.
4555 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
4556 * fixed bug: finalizers and after GC hooks that cause consing are now
4558 * fixed bug: compiler error messages and summaries are now printed to
4559 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
4560 * fixed inference of the upper bound of an iteration variable.
4561 (reported by Rajat Datta).
4562 * fixed bug 211e: calling local functions with duplicated constant
4563 keyword argument no longer causes a bogus style warning about an
4565 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
4566 ftype declaration to be disregarded. (reported by Dave Roberts)
4567 * fixed bug 373: caused by erronous compilation of references to alien
4568 variables in the runtime on ppc/darwin.
4569 * fixed bug 376: CONJUGATE type deriver.
4570 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
4571 (reported by Baughn on #lisp)
4572 * a cross-compiler bug on non-x86 platforms has been identified and
4573 fixed. (thanks to Bruno Haible)
4574 * improvements to the MIPS runtime code for increased stability.
4575 (thanks to Thiemo Seufer)
4576 * increased the maximimum compact environment size to allow
4577 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
4578 * partial workaround for bug 135: don't name the function we're
4579 calling for hairy cases of EVAL, so as not to accumulate one environment
4580 entry per call to EVAL. (reported by Kevin Reid)
4581 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
4582 * optimization: type testing for non-vector arrays should be faster.
4583 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
4585 * bug fix: setting 31st element of a bit vector to zero did not work
4587 * bug fix: redefining a class definition which failed due to a
4588 previous accessor / function clash now works (but see BUGS entry
4589 #380 for more problems in this area). (thanks to Zach Beane)
4590 * the long form of DEFINE-METHOD-COMBINATION disables method group
4591 checking when given a single method group with pattern *. (thanks
4593 * on x86 compiler supports stack allocation of results of simple
4594 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
4595 * support for building and running on Mac OS X 10.4 "Tiger" has been added
4596 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
4597 * fixed some bugs related to Unicode integration:
4598 ** the restarts for recovering from input and output encoding
4599 errors only appear when there is in fact such an error to
4601 * fixed some bugs revealed by Paul Dietz' test suite:
4602 ** MISC.549 and similar: late transformation of unsafe type
4603 assertions into derived types caused unexpected code
4605 ** SCALE-FLOAT type deriver is less wrong.
4606 ** type derivers for EXP, LOG and similar functions compute result
4607 types for complex arguments better.
4608 ** (MISC.563) CONJUGATE type deriver works for very restricted
4610 ** out-of-line type testers for character strings are available.
4611 ** EQUAL compiler transform understands specialness of objects
4613 ** accessing double-floats stored on the stack now works on x86-64.
4614 ** debugger internals could sometimes create invalid lispobjs,
4615 resulting in GC crashes.
4616 ** MISC.548: type check weakening can convert required type into
4618 ** initialization forms for bindings are not in scope of free special
4621 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
4622 * incompatible change: thread support for non-NPTL systems has
4623 been removed - locking is buggy and unreliable. A threaded
4624 SBCL build will now warn at startup and refuse to create
4625 new threads, unless futex support is detected in the kernel
4626 * incompatible change: the top level REPL now has only an ABORT
4627 restart associated with it, not TOPLEVEL and ABORT as it used to.
4628 TOP and TOPLEVEL are now available as debugger commands for
4629 returning to the top level.
4630 * incompatible change: forms evaluated in the REPL now use the
4631 global optimization policy.
4632 * incompatible change: user- and system-initialization files are
4633 no longer processed with LOAD, but by READ and EVAL; hence the
4634 global optimization policy, startup package, readtable, etc,
4636 * The .fasl file format number has been incremented because of
4637 various incompatible changes.
4638 * internal entry point details and argument counts no longer appear
4639 in backtraces unless explicitly requested by setting
4640 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
4641 * built-in and standard functions no longer have names like "top
4642 level local call to FOO".
4643 * fixed bug 32: functions defined in non-null lexical environments
4644 now have more legible printed representation
4645 * fixed bug 33: functions defined in non-null lexical environemnts
4646 are now more amenable to inspection by INSPECT.
4647 * workaround for bug 354: XEPs no longer appear in backtraces unless
4648 explicitly requested.
4649 * fixed bug: receiving the signal which results from attempting to
4650 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
4651 SIGBUS on other *BSDs) on architectures where the C stack is also
4652 the Lisp stack (x86 and x86-64) from foreign code no longer leads
4653 to debugger confusion or wild instability. (reported by Cheuksan
4655 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
4656 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
4657 (reported by Lutz Euler)
4658 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
4659 compiled code. (reported by Paul Dietz)
4660 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
4661 specialized parameter to a method to something that is not TYPEP
4662 the specializer is now possible.
4663 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
4664 face of package deletion.
4665 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
4666 pathname. (reported by David Tolpin on c.l.l)
4667 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
4668 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
4669 STRING-STREAM and FILE-STREAM, respectively.
4670 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
4671 than previously; in addition, its test suite is now run on build.
4672 (thanks to Luke Gorrie)
4673 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
4674 * optimization: added a immediate representation for single-floats
4676 * fixed some bugs revealed by Paul Dietz' test suite:
4677 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
4678 ** attempting to create a package with a colliding nickname causes
4679 correctable errors to be signalled.
4680 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
4681 ** several x86-64 backend bugs related to sign-extension of immediate
4684 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
4685 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
4686 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
4688 * fixed loading of multiply forward-referenced layouts.
4689 (thanks to Cheuksan Wang)
4690 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
4691 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
4692 (see COMPILE-FILE documentation for details of :PRINT option)
4693 * fixed bugs 19 and 317: fixed-format floating point printing is
4694 more accurate. This also fixes a bug reported by Adam Warner
4695 related to the ~@F format directive.
4696 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
4698 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
4699 dispatch table if the from-char is a dispatch macro character.
4700 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
4701 by the wordsize no longer ignore the last word. (reported by Lutz
4703 * fixed bug in type checking of dynamic-extent variables. (reported
4705 * optimization: sequence traversal functions use their freedom to
4706 coerce function designators to functions.
4707 * optimization: code with many calls to CLOS methods specialized on
4708 CLOS classes has had redundant type checks removed.
4709 * optimization: added declarations to speed up operations that access
4710 the internal character database (for example STRING-UPCASE)
4711 * optimization: comparison operations between floats and sufficiently small
4712 fixnums no longer create extra rationals
4713 * fixed some bugs related to Unicode integration:
4714 ** portions of multibyte characters at the end of buffers for
4715 character-based file input are correctly transferred to the
4716 start of the buffer at the next read.
4717 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
4718 passing it through to OPEN.
4719 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
4720 argument given to internal calls to OPEN.
4721 ** the built-in comment readers (introduced by character sequences
4722 ";" and "#|") are more forgiving to encoding errors; they will
4723 STYLE-WARN and then attempt to resync the stream at a character
4724 boundary. (thanks to Teemu Kalvas)
4725 * fixed some bugs in the x86-64 port:
4726 ** Negative short int return values from c-calls are sign-extended
4728 ** The stack is aligned to 16-bytes for c-calls, as required by
4729 the ABI. (thanks to Cheuksan Wang)
4730 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
4731 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
4732 for enums. (thanks to Vincent Arkesteijn)
4733 ** Multiple small optimizations and bugfixes for floating point
4735 * fixed some bugs revealed by Paul Dietz' test suite:
4736 ** Space, Tab, Linefeed, Return and Page have the invalid
4737 secondary constituent character trait.
4738 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
4740 ** WITH-INPUT-FROM-STRING should only update the index place on
4742 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
4743 works more reliably.
4744 ** Bit-array operations (BIT-AND and similar) worked incorrectly
4745 with one-dimensional arrays with fill pointers.
4746 ** TYPE-OF failed on a complex with an integer realpart and a
4748 ** compiler failure during type inference for the code of form
4749 (IF (EQL X (THE ...)) ...) (MISC.535).
4751 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
4752 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
4753 platform. The port supports 61-bit fixnums, large memory spaces
4754 and reloading shared object files.
4755 * enhancement: saving cores with foreign code loaded is now
4756 supported on ppc/Darwin in addition to the previously supported
4758 * enhancement: the statistical profiler now walks deeper into the
4759 call stack for more meaningful call-graphs and accrued time
4760 reports (x86/x86-64 only). It also now reports time spent in
4762 * enhancement: it is now possible to trace most individual methods
4763 of a generic function in addition to tracing the generic function
4765 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
4767 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
4768 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
4769 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
4770 produces an error. (thanks to Vincent Arkesteijn)
4771 * bug fix: NAMESTRING on pathnames with :WILD components in their
4772 directories works correctly. (thanks to Artem V. Andreev)
4773 * fixed bug 125: compiler preserves identity of closures. (reported
4775 * bug fixed: functions with &REST arguments sometimes failed with
4776 "Undefined function" when compiled with (DEBUG 3). (reported by
4778 * bug fix: overflow during compiling of setting element of a bit
4779 vector with constant index and value. (reported by Timmy Douglas)
4780 * build fix: fixed the dependence on *LOAD-PATHNAME* and
4781 *COMPILE-FILE-PATHNAME* being absolute pathnames.
4782 * on x86 compiler partially supports stack allocation of dynamic-extent
4784 * GO and RETURN-FROM do not check the extent of their exit points
4785 when compiled with SAFETY 0.
4786 * fixed some bugs related to Unicode integration:
4787 ** encoding and decoding errors are now much more robustly
4788 handled; it should now be possible to recover even from invalid
4789 input or output to the terminal. (thanks to Teemu Kalvas)
4790 ** provided a first cut at implementing STRING-TO-OCTETS and
4791 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
4792 ** altered the SB-MD5 contributed module slightly, changing the
4793 interface just enough for it to be supportable for builds where
4794 lisp characters are not eight bits.
4795 * fixed some bugs revealed by Paul Dietz' test suite:
4796 ** the FORMATTER-generated functions for ~V[ conditionals require
4797 the correct number of arguments.
4798 ** READ-FROM-STRING returns the mandated second value when applied
4799 to displaced strings.
4800 ** the #\Rubout and #\Backspace characters are treated as invalid
4801 constituent characters by the tokenizer.
4803 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
4804 * new feature: reloading changed shared object files with
4805 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4806 * new feature: references to foreign variables and functions
4807 can now be compiled and loaded before the corresponding shared
4808 object file is loaded, as long as the foreign definitions are
4809 available at runtime.
4810 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
4811 supported. (thanks to Dan Debertin)
4812 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
4813 just keywords. (thanks to Vincent Arkesteijn)
4814 * fixed bug #331: structure-class instances corresponding to
4815 DEFSTRUCT forms are now created eagerly.
4816 * fixed bug #345: backtraces from calls to undefined functions work
4817 on x86 as well. Related bug #61 is now also partially fixed on x86
4818 (backtraces from throws to unknown catch tags.)
4819 * bug fix: lambda-list parsing is now stricter vrt. order and number
4820 of lambda-list keywords.
4821 * bug fix: as specified by AMOP, an error is signalled if a
4822 class-option appears multiple times in a DEFCLASS form. (reported
4824 * bug fix: RANDOM can be compiled when the compiler derives the type
4825 of its numeric argument as a disjoint set of small integers.
4826 (reported by Paul Dietz)
4827 * bug fix: starting a core saved with shared objects loaded when
4828 those objects are not available no longer causes threaded SBCL to
4829 hang. (reported by Sean Ross)
4830 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
4832 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
4833 argument, which must always be NIL. (reported by Kalle Niemitalo)
4834 * bug fix: printing 1.0d+23 no longer results in an error.
4835 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
4836 * bug fix: structure slot setters preserve evaluation order. (thanks
4838 * fixed some bugs related to Unicode integration:
4839 ** RUN-PROGRAM can allow its child to take input from a Lisp
4840 stream. (reported by Stefan Scholl)
4841 ** ASDF-INSTALL successfully downloads .tar.gz files in all
4842 locales. (reported by Ken Causey)
4843 * fixed some bugs revealed by Paul Dietz' test suite:
4844 ** INCF, DECF and REMF evaluate their place form as specified in
4846 ** FORMATTER expands ~{ ~} iteration directives with V or #
4847 parameters correctly.
4848 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4849 consequent uses no arguments correctly.
4850 ** the system has a partial understanding of the (COMPLEX RATIO)
4852 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4855 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4856 * new feature: a build-time option (controlled by the :SB-UNICODE
4857 keyword feature, enabled by default) for building the system with
4858 support for the entire 21-bit character space defined by the
4860 * new feature: the system now has rudimentary external-format
4861 support; the primary user-visible change at this time is that
4862 characters with the high bit set (such as lower-case-e-acute) will
4863 print correctly to a terminal in a UTF-8 environment.
4864 * minor incompatible change: BASE-CHAR no longer names a class;
4865 however, CHARACTER continues to do so, as required by ANSI.
4866 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4867 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4868 has been moved to the SB-EXT package (temporarily re-exported from
4870 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4871 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4873 * fixed bug #351: better error-handlind and reporting for malformed
4875 * fixed bug #350: bignum-printing is now more memory-efficient,
4876 allowing printing of very large bignums, eg. (expt 2 10000000).
4877 (reported by Bruno Haible)
4878 * fixed bug #302: better primitive-type selection for intersection
4880 * fixed bug #308: non-graphic characters now all have names, as
4881 required. (reported by Bruno Haible)
4882 * bug fix: redefining a class with different superclasses now correctly
4883 removes it from the direct-subclasses of its previous superclasses.
4884 (reported by David Morse)
4885 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4886 new value now works. (reported by Bruno Haible)
4887 * bug fix: correct canonicalization of multiple non-standard slot
4888 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4889 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4890 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4891 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4892 now exists, an signals an error.
4893 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4894 during macroexpansion for non-iteration variables as well. (reported
4895 by Bruno Haible for CMUCL)
4896 * bug fix: Cyclic structures and unprintable objects in compiler
4897 messages no longer cause errors. (reported by Bruno Haible)
4898 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4899 and READ-FROM-STRING all now return a primary value of NIL if
4900 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4901 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4902 (reported by Bruno Haible for CMUCL)
4903 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4904 do not designate a condition. (reported by Bruno Haible for
4906 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4907 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4908 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4909 permitting resolution in favour of any of the conflicting symbols.
4910 (reported by Bruno Haible for CMUCL)
4911 * bug fix: EQUAL compiler optimizations is less aggressive on
4912 strings which can potentially compare true despite having distinct
4913 specialized array element types.
4914 * bug fix: unit enumerations can be defined without dividing by
4915 zero. (thanks to Vincent Arkesteijn)
4916 * FORMAT compile-time argument count checking has been enhanced.
4917 (report from Bruno Haible for CMUCL)
4918 * a partial workaround for the bug 262: the compiler does not try to
4919 inline-expand a local function doing RETURN-FROM from a deleted
4920 BLOCK. (thanks to Peter Denno for the bug report and to David
4921 Wragg for the simple test case)
4922 * fixed some bugs revealed by Paul Dietz' test suite:
4923 ** RENAME-PACKAGE allows all package designators as new package
4925 ** constraint propagation and lambda variable substitution are
4926 more cautious in dealing with partially deleted code.
4927 ** compiler sometimes lost reoptimization passes.
4928 ** CERROR, given a condition as condition designator, passes its
4929 remaining arguments to the continue format control without
4931 ** Case-altering FORMAT directives work correctly on non-ASCII
4933 ** The REAL type specifier handles bounds outside the floating
4934 point ranges without signalling FLOATING-POINT-OVERFLOW.
4935 ** Functions with IR1-transformations can create intercomponent
4936 references to global functions.
4937 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4939 ** FORMAT ~R treats a nil value for its first parameter correctly.
4941 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4942 * enhancement: saving cores with foreign code loaded is now
4943 supported on x86/NetBSD and sparc/Linux in addition to the previously
4944 supported platforms.
4945 * bug fix: on some platforms repeated installations caused multiple
4946 copies of HTML documentation to be installed -- should not happen
4947 any more. (reported by Stefan Scholl)
4948 * bug fix: parsing self-recursive alien record types multiple times
4949 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4950 original patch by Helmut Eller for CMUCL)
4951 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4952 (thanks to Richard Kreuter)
4953 * bug fix: defining classes whose accessors are methods on existing
4954 generic functions in other (locked) packages no longer signals
4955 bogus package lock violations. (reported by François-René Rideau)
4956 * bug fix: special variables as DEFMETHOD parameters no longer have
4957 associated bogus type declarations. (reported by David Wragg and
4959 * bug fix: read-write consistency on streams of element-type
4960 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4961 * bug fix: redefiniton of the only method of a generic function with
4962 no DEFGENERIC no longer emits a full WARNING. In addition,
4963 redefinition of generic functions with no DEFGENERIC to an
4964 incompatible lambda list now signals an error. (thanks to Zach
4966 * bug fix: DEFGENERIC now works even when there's a function of the
4967 same name in an enclosing lexical environment. (thanks to Zach
4969 * fixed compiler failure, caused by instrumenting code during
4970 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4971 * optimization: added loop analysis and improved register allocation
4972 * fixed some bugs revealed by Paul Dietz' test suite:
4973 ** POSITION on displaced vectors with non-zero displacement
4974 returns the right answer.
4975 ** (SIMPLE-STRING) is a valid type specifier for sequence
4977 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4979 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4980 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4982 ** The justification version of the FORMAT ~< directive treats
4983 non-zero minpad parameter correctly.
4985 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4986 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4987 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4988 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4989 the supported interface.
4990 * new feature: Single-stepping of code compiled with DEBUG 2 or
4991 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4992 * new feature: saving cores with foreign code loaded is now
4993 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4994 Timothy Moore's work for CMUCL)
4995 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4996 parameters to * instead of NIL if no initform is supplied.
4997 (reported by Johan Bockgaard)
4998 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4999 correctly when FUNCALL appears as the car of the form. Note:
5000 despite this FUNCALL forms are not currently subject to
5001 compiler-macro expansion. (port of Raymond Toy's fix for the
5002 same from CMUCL, reported by Johan Bockgaard)
5003 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
5004 (thanks for Teemu Kalvas)
5005 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
5006 case instead of terminating the iteration (thanks for Julian
5007 Squires, Sean Champ and Raymond Toy)
5008 * bug fix: incorrect expansion of defgeneric that caused a style
5009 warning. (thanks for Zach Beane)
5010 * bug fix: slot accessor effective method computation works properly
5011 for classes with multiple non-standard applicable methods on
5012 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
5013 * on x86 compiler supports stack allocation of results of LIST and
5014 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
5015 CMUCL implementation by Gerd Moellmann)
5016 * fixed some bugs revealed by Paul Dietz' test suite:
5017 ** FORMAT strings with both the ~<~:;~> form of the justification
5018 directive and pretty-printing directives cause an error.
5020 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
5021 * incompatible change: the internal functions
5022 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
5023 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
5024 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
5025 instead of the old functions.
5026 * new feature: on platforms where "dladdr" is available foreign
5027 function names now appear in backtraces. (based on Helmut Eller's
5029 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
5030 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
5032 * documentation: ASDF manual is now distributed with SBCL.
5033 * bug fix: SBCL can now load its contributed modules with REQUIRE
5034 even if the system-provided entries have been removed from
5035 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
5037 * bug fix: backtraces involving undefined functions or assembly
5038 routines are more informative. (thanks to Brian Downing)
5039 * bug fix: mutually referent alien structures now work correctly.
5040 (reported by Rick Taube)
5041 * bug fix: structures defined by WITH-ALIEN can be referred to
5042 within other definitions in the same WITH-ALIEN.
5043 * bug fix: division operators (MOD, TRUNCATE and the like) with
5044 constant zero divisors and integer dividends no longer generate
5046 * bug fix: provide default methods for INPUT-STREAM-P and
5047 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
5048 * bug fix: improve the detection and resolution of MOP metacycles
5049 (where effective method computation depends on the generic function
5050 having its effective method computed). (reported by Bruno Haible)
5051 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
5052 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
5053 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
5054 * bug fix: pathnames with relative directory components can be
5055 represented relative to default pathnames.
5056 * optimization: in taking the GCD of bignums, reduce the two bignums
5057 to approximately the same size (using Euclid's algorithm) before
5058 applying the more sophisticated binary GCD. (thanks to Juho
5060 * optimization: COUNT on bitvectors now operates word-at-a-time.
5061 * optimization: ASH with a positive, but not necessarily constant,
5062 (leftwards) shift, when in a modular context, is compiled to a
5064 * fixed some bugs revealed by Paul Dietz' test suite:
5065 ** FORMAT variable parameters ("~V<char>") are defaulted properly
5066 if the corresponding argument is NIL.
5067 ** FORMAT directives accepting a minpad parameter treat negative
5069 ** literal commas as character parameters to FORMAT directives are
5071 ** literal spaces directly after ~<Newline> directives within a
5072 format-logical-block (~:< ~@:>) do not induce :FILL-style
5073 conditional newlines.
5074 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
5075 as specified: it no longer includes conditional newlines).
5076 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
5078 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
5079 :PER-LINE-PREFIX argument does not evaluate to a string.
5081 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
5082 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
5083 the manual for details; for now, package locks can be disabled by
5084 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
5085 if no major problems are found then it is likely that they will be
5086 compiled in unconditionally.
5087 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
5088 unsupported operators on all platforms. To load a shared library
5089 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
5090 object file, link it into a shared library outside of SBCL and
5091 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
5093 * bug workaround: ROOM T and the GC were not working together
5094 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
5095 reporting facility aren't preserved. That reporting has been
5096 disabled, so now until and unless someone figures out how to make it
5097 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
5098 * minor incompatible change: as threatened around sbcl-0.8.0, the
5099 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
5100 The symbols are also exported from SB-PCL for backwards
5101 compatibility, but more so than before SB-PCL should be treated as
5102 an implementation-internal package.
5103 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
5105 * the SB-SPROF contrib now works on (most) non-x86 architectures.
5106 It is known as of this release not to work on the Alpha, however.
5107 * fixed bug #167: errors signalled due to illegal syntax in method
5108 bodies are now more legible.
5109 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
5110 designators and can hence be used with TYPEP.
5111 * fixed bug #333: CHECK-TYPE now ensures that the type error
5112 signalled, if any, has the right object to be accessed by
5113 TYPE-ERROR-DATUM. (reported by Tony Martinez)
5114 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
5115 5.1.2.3 for multiple-value place subforms. (reported by Kalle
5117 * fixed bug #334: programmatic addition of slots using specialized
5118 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
5119 and :ALLOCATION :CLASS slots.
5120 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
5121 float exponents. (rereported by Peter Seibel)
5122 * fixed a bug: #\Space (and other whitespace characters) are no
5123 longer considered to be macro characters in standard syntax by
5124 GET-MACRO-CHARACTER.
5125 * fixed bug: initialization of condition class metaobjects no longer
5126 causes an instance of the condition to be created. (reported by
5128 * fixed bug: it is now possible to have slots such that
5129 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
5130 description is neither :INSTANCE nor :CLASS.
5131 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
5132 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
5133 SLOT-VALUE-USING-CLASS), and no longer causes errors with
5134 non-standard SLOT-DEFINITION-ALLOCATION values.
5135 * fixed bugs: various race conditions handling exiting threads.
5136 CL-PPCRE's thread torture test now passes.
5137 * fixed arguably-a-bug: GC time proportional to number of threads in
5138 system even when most of them are idle
5139 * optimization: improved performance of BIT and SBIT on bit-vectors.
5140 * .fasl file incompatibility: The fasl file version number has
5141 been incremented because of changes associated with package locks.
5143 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
5144 * minor incompatible change: the system no longer provides
5145 optimization hints (conditions which are TYPEP
5146 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
5147 mode; these hints are still emitted when higher SPEED optimization
5149 * new contrib module: a sampling profiler (profiling by statistical
5150 sampling, rather than by instrumenting functions) is available as
5151 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
5152 * the behaviour of the standard function ED is now customizeable by
5153 third parties through a hook variable: see ED's documentation
5154 string for information on the protocol.
5155 * the compiler no longer emits efficiency notes for (FUNCALL X)
5156 when the type of X is uncertain under default optimization
5158 * fixed bug 276: mutating a binding of a specialized parameter to a
5159 method to something that is not TYPEP the specializer is now
5161 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
5162 exhibit the required behaviour on the x86 platform. (thanks to
5163 Peter van Eynde, Eric Marsden and Bruno Haible)
5164 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
5165 even for difficult arguments. (reported by Peter Graves)
5166 * fixed bug 141a: the backquote printer now descends quoted
5168 * fixed another bug in backquote printing: no more destructive
5169 modification of the form's list structure. (reported by Brian
5171 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
5172 move between its address being taken and the call to
5173 interrupt_thread, fixing a crashing race condition.
5174 * the SB-POSIX contrib implementation has been adjusted so that it
5175 no longer exhibits ridiculously poor performance when constructing
5176 instances corresponding to C structs.
5178 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
5179 * minor incompatible change: the sb-grovel contrib now treats C
5180 structures as alien (in the sense of SB-ALIEN) objects rather than
5181 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
5182 has implications for memory management of client code
5183 (sb-grovel-returned objects must now be manually managed) and for
5184 type safety (alien objects now have full types).
5185 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
5186 used to control emission of compiler diagnostics, rather than the
5187 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
5188 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
5189 quality should be considered deprecated.
5190 * install.sh now installs the user manual as well
5191 * (not quite a new documentable feature, but worth considering in
5192 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
5193 beginnings of a semantically meaningful condition hierarchy is
5194 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
5196 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
5197 designator as the defaults argument.
5198 * fixed bug: Displaced arrays whose displaced-to array has become
5199 too small now cause ARRAY-DIMENSION to signal an error, providing
5200 for safer bounds-checking. (reported by Bruno Haible)
5201 * fixed bug: DEFCLASS slot definitions with identical :READER and
5202 :WRITER names now signal a reasonable error. (reported by Thomas
5204 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
5206 * fixed bug: Invalid slot specification errors now print correctly.
5207 (thanks to Zach Beane)
5208 * fixed bug 320: Shared to local slot value transfers in class
5209 redefinitions now happen corrently from superclasses as
5210 well. (reported by Bruno Haible)
5211 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
5213 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
5214 improper lists correctly. (reported by Bruno Haible)
5215 * fixed bug 313: source-transform for <fun-name> was erroneously
5216 applied to a call of a value of a variable with name <fun-name>.
5217 (reported by Antonio Menezes Leitao)
5218 * fixed bug 307: The obsolete instance protocol ensures that
5219 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
5220 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
5221 remove dead unknown-values globs from the middle of the stack.
5222 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
5223 easier to resume long computations after using *BREAK-ON-SIGNALS*
5224 to diagnose and fix failures. (thanks to Nikodemus Siivola)
5225 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
5226 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
5227 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
5228 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
5229 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
5231 * fixed a (fairly theoretical) bug in string printing: if
5232 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
5233 does not have array-element-type equal to the most general string
5235 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
5236 function name. (thanks to Nikodemus Siivola)
5237 * fixed bug: compile-time format string checker failed on
5238 non-closed ~{. (reported by Thomas F Burdick)
5239 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
5240 don't warn on legal loop code involving more than one aggregate
5241 boolean. (thanks to Nikodemus Siivola)
5242 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
5243 in keyword position to MAKE-PACKAGE was not being reported as
5245 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
5246 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
5248 * fixed bugs 280 and 312: the checking for multiple definitions in a
5249 file is less likely to become confused by uses of inline
5251 * fixed bug: the #S reader macro performs the keyword coercion
5252 specified for slot names. (reported by Kalle Niemitalo)
5253 * fixed bug: lambda lists may contain symbols whose names start with
5254 & but are not lambda-list-keywords; their occurrence triggers a
5256 * fixed bug 321: define-method-combination argument lambda lists do
5257 not cause invalid code to be generated when &optional or &aux
5258 variables have default values. (reported by Bruno Haible)
5259 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
5260 have CLOS classes; this appears also to have fixed reported
5261 instability in stack exhaustion detection.
5262 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
5263 MUFFLE-WARNING when no associated restart is present is now
5265 * optimization: rearranged the expansion of various defining macros
5266 so that each expands into only one top-level form in a
5267 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
5269 * optimization: used a previously little-used slot in symbols to
5270 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
5272 * fixed some bugs revealed by Paul Dietz' test suite:
5273 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
5275 ** Fixed an optimization bug related to inheritance of initforms
5276 from local to shared slots.
5277 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
5278 ** CAST optimizer forgot to flush argument derived type.
5279 ** print/read consistency on floats is now orders of magnitude
5280 more likely. (thanks also to Bruno Haible for a similar report
5282 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
5283 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
5284 for objects of type REAL. Make it so.
5285 ** SXHASH is specified (infelicitously) to respect similarity,
5286 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
5287 it so. (thanks to Markus Ziegler)
5288 ** on the Alpha, the compiler succeeds in compiling functions
5289 returning a known number of arguments greater than 63.
5290 ** fixed handling of invalid NIL arguments in keyword position
5292 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
5294 ** provided a readably-printable representation for RANDOM-STATE
5296 ** ensured that pathnames, where they have a namestring, always
5297 print using #P"..." syntax.
5299 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
5300 * Support for the forthcoming 2.0 version of the NetBSD kernel
5301 running on x86 hardware has been added. (thanks to Perry
5302 E. Metzger most immediately, and others for their past work)
5303 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
5304 current release version; SBCL's OpenBSD support had been broken
5305 since about the time of OpenBSD's switch to ELF binary format.)
5306 * [placeholder for DX summary]
5307 ** user code with &REST lists declared dynamic-extent, under high
5308 speed or space and low safety and debug optimization policy.
5309 * The manual has been converted to Texinfo format and the debugger
5310 chapter from the cmucl manual has been added.
5311 * A facility has been added to extract documentation strings from
5312 sbcl and store them as Texinfo-formatted snippets for inclusion in
5313 the manual (via Texinfo's @include directive)
5314 * bug fix: compiler emitted division in optimized DEREF. (thanks for
5315 the test case to Dave Roberts)
5316 * bug fix: multidimensional simple arrays loaded from FASLs had fill
5317 pointers. (reported by Sean Ross)
5318 * bug fix: PROFILE output is printed nicely even for large numerical
5319 values. (thanks to Zach Beane)
5320 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
5321 greater than 32 handle EOF correctly.
5322 * bug fix: on X86 an immediate argument of the IMUL instruction is
5323 correctly printed in disassembly. (thanks to Lutz Euler)
5324 * bug fix: class slots in redefined classes preserve their old
5325 values. (thanks to Bruno Haible and Nikodemus Siivola)
5326 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
5327 succeeds. (reported by Marco Baringer)
5328 * fixed some bugs revealed by Paul Dietz' test suite:
5329 ** READ-SEQUENCE now works on ECHO-STREAMs.
5330 ** RATIONALIZE works more according to its specification. (thanks
5333 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
5334 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
5335 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
5336 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
5337 should matter to you only if you rebind the printer control
5338 variables and then find you want different bindings in the
5339 debugger than in the ordinary execution of your program.)
5340 * The runtime build system has been tweaked to support building
5341 (on SPARC/SunOS) using a C compiler which invokes Sun's own
5342 assembler and linker. (thanks to Nikodemus Siivola)
5343 * Unbound, undefined, undeclared variables now trigger full
5344 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
5345 more often programmer error than deliberate exploitation of undefined
5347 * optimization: the hash algorithm for strings has changed to one
5348 that is less vulnerable to spurious collisions. (thanks to Juho
5350 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
5351 needless bounds checking. (thanks to Juho Snellman)
5352 * optimization: implemented multiplication as a modular
5353 (UNSIGNED-BYTE 32) operation on the PPC backend.
5354 * fixed some bugs revealed by Paul Dietz' test suite:
5355 ** ADJUST-ARRAY now copies the datum in a zero rank array if
5357 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
5358 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
5359 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
5361 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
5363 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
5365 ** ECHO-STREAMs no longer attempt to echo the end of file value to
5366 their output stream on EOF from read.
5367 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
5368 have been read to end-of-file.
5369 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
5371 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
5372 description of determination of which consecutive characters
5374 ** Printing the "Space" character with escaping on now yields "#\\ ",
5375 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
5376 ** Reading floating-point numbers with *READ-BASE* set to a number
5377 less than 10 works correctly.
5378 ** Reading floating-point numbers with *READ-BASE* set to a number
5379 more than 10 works correctly.
5380 ** Printing with *PRINT-READABLY* targets the standard readtable, not
5381 the readtable currently in effect.
5383 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
5384 * minor incompatible change: parsing of namestrings on a physical
5385 (Unix) host has changed; numbers after the final #\. in a
5386 namestring are no longer interpreted as a version field. This is
5387 intented to be largely invisible to the user, except that the
5388 meaning of the namestring "*.*.*" has changed: it now refers to a
5389 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
5390 should usually be replaced by
5391 (make-pathname :name :wild :type :wild :version :wild)
5392 with the added benefit that this is more likely to be portable.
5393 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
5394 option to OPEN now signals an error if the file being opened
5395 exists; this may have an impact on existing code.
5396 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
5397 signals received, on the PowerPC platforms (both Linux and
5398 Darwin). (thanks to Pierre Mai for pointing out the location of
5400 * several fixes on OS X: The system now builds and runs cleanly on
5401 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
5402 (thanks to Brian Mastenbrook)
5403 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
5404 second-resolution: integer multiples of 1/3600 between -24 and 24.
5405 (thanks to Vincent Arkesteijn)
5406 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
5407 type when called with 1 argument; PEEK-CHAR checked type of
5408 PEEK-TYPE only after having read first character from a
5409 stream. (reported by Peter Graves)
5410 * bug fix: the garbage collector now has much better locality
5411 behaviour, and in particular no longer treats all memory as being
5412 exhausted when many small objects point to each other in a deeply
5414 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
5415 recognized as being TYPEP their class.
5416 * bug fix: the PUSHNEW documentation string has been corrected.
5417 (thanks to Vincent Arkesteijn)
5418 * bug fix: defaulting of the value for the last of an atypically
5419 large number of multiple values being bound was not being
5420 performed correctly on the Alpha or PPC platforms
5421 * optimization: implemented multiplication as a modular
5422 (UNSIGNED-BYTE 32) operation on the x86 backend.
5423 * optimization: SEARCH on simple-base-strings can now be open-coded.
5424 (see also contrib/compiler-extras.lisp for inspiration for
5425 teaching the compiler about the Boyer-Moore algorithm).
5426 * value, returned by MAX (and MIN) called with several EQUALP, but
5427 not EQL, arguments now does not depend on compiler settings.
5428 * fixed some bugs revealed by Paul Dietz' test suite:
5429 ** in stack analysis liveness information is propagated from
5430 non-local entry points.
5431 ** pathwise CAST removing failed when the CAST node did not start
5433 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
5434 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
5436 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
5437 host is already defined.
5438 ** RENAME-FILE works on streams instead of signalling an internal
5440 ** PEEK-CHAR uses the current readtable when determining whether
5441 or not a character is whitespace.
5442 ** MERGE-PATHNAMES handles the case when the pathname does not
5443 specify a name while the default-pathname specifies a version.
5444 ** Pathnames now stand a better chance of respecting print/read
5446 ** Attempting to use standardized file system operators with a
5447 pathname with invalid :DIRECTORY components signals a
5449 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
5451 ** DIRECTORY on logical pathnames is more correct.
5452 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
5453 signal a TYPE-ERROR if their argument is not a stream.
5454 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
5455 designator argument does not designate a stream.
5456 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
5457 examining the synonym.
5458 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
5460 ** OPEN and WITH-OPEN-STREAM allow opening streams with
5461 element-type larger than ([UN]SIGNED-BYTE 32).
5463 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
5464 * When built with the :SB-FUTEX feature, threaded builds now take
5465 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
5466 for faster/more reliable mutex and condition variable support.
5467 * Incompatible change (but one you probably shouldn't have been using
5468 anyway): the interface and code for arbitrating between multiple
5469 threads in the same user session has been redesigned.
5470 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
5471 error when called without an explicit environment argument.
5472 (thanks to Nikodemus Siivola)
5473 * bug fix: buffered :DIRECTION :IO streams are less likely to become
5474 confused about their position. (thanks to Adam Warner and Gerd
5476 * bug fix: Pretty printing backquoted forms with unquotations in the
5477 argument list position of various code constructs such as LAMBDA
5478 now works correctly. (reported by Paul Dietz)
5479 * bug fix: Pretty printing unquotations no longer loses all
5480 stream position information.
5481 * optimization: performance of string output streams is now less
5482 poor for multiple small sequence writes.
5483 * optimization: performance of CSUBTYPEP in the presence of complex
5484 expressions involving CONS and NOT many times has been improved.
5485 (reported by Paul Dietz)
5486 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
5488 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
5489 streams for the REPL, for the debugger, and so on. (thanks to
5491 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
5492 * fixed some bugs revealed by Paul Dietz' test suite:
5493 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
5494 is ignored if it is too small, rather than propagating through
5495 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
5496 ** extremely complex negations of CONS types were not being
5497 sufficiently canonicalized, leading to inconsistencies in
5499 ** VALUES tranformer lost derived type.
5501 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
5502 * fixed a bootstrapping bug: the build process no longer assumes
5503 that the various BOOLE-related constants have the same value in
5504 host and target lisps. (noted by Paul Dietz' test suite on an
5505 SBCL binary built from CLISP)
5506 * The system can now be dynamically linked on the MIPS platform,
5507 which enables dynamic loading of foreign code from Lisp. (thanks
5508 to Ralf Baechle for discussions on the MIPS ABI)
5509 * The system now records debugging information for its own source
5510 files in a filesystem-position-independent manner, relative to
5511 the "SYS" logical host.
5512 * fixed a compiler bug: MV-LET convertion did not check references
5513 to the "max args" entry point. (reported by Brian Downing)
5514 * tweaked disassembly notes to be less confident about proclaiming
5515 some instruction as an LRA. (thanks to Brian Downing)
5516 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
5517 now each have their own history, command character, and other
5518 characteristics. (thanks to David Lichteblau)
5519 * fixed some bugs revealed by Paul Dietz' test suite:
5520 ** compiler failure in compiling LOGAND expressions including a
5522 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
5523 shift greater than 32.
5524 ** FLUSH-DEST did not mark blocks for type check regeneration.
5525 ** HANDLER-CASE failed to accept declarations in handler clauses
5526 in some circumstances.
5528 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
5529 * New code in contrib/sb-introspect (still probably not entirely
5530 stable yet) provides some support for smart Lisp development
5531 environments like SLIME.
5532 * The conditions signalled for errors occurring when loading .fasl
5533 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
5534 in a way which should help ASDF recover gracefully.
5535 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
5536 stuff has been cleaned up. If you code contrib/ stuff, this might
5537 affect you, and you can look at contrib/README, contrib/STANDARDS,
5538 and/or the 0.8.4.27 diff to check.
5539 * In full calls the compiler now does not generate checks for declared
5540 argument types for all arguments.
5541 * various threading fixes
5542 ** and some experimental patches which didn't make it into
5543 the main tree for this release, but which are shipped in
5544 contrib/experimental-thread.patch as a possible fix for some
5545 failures (deadlock, spinning...) in GC-intensive multithreaded
5547 * fixed PPC build problem (source code incompatibility of different
5548 library versions): added offsetof() hackery which attempts to divine
5549 where glibc maintainers put uc_mcontext today
5550 * fixed bug 282: compiler does not trust type assertions while passing
5551 arguments to a full call.
5552 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
5553 &OPTIONAL VALUES type parameter.
5554 * fix bug 214: algorithm for noting rejected templates is now more
5555 similar to that of template seletion. (also reported by rydis on
5557 * fixed bug 141b: printing backquoted information readably and prettily
5558 inserts a space where necessary.
5559 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
5560 (CHARACTER 10) are now reported as errors, rather than propagated
5561 as unknown types. (reported by piso on #lisp)
5562 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
5563 with values NIL and :ERROR. (thanks to Milan Zamazal)
5564 * fixed bug 191c: CLOS now does proper keyword argument checking as
5565 described in CLHS 7.6.5 and 7.6.5.1.
5566 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
5567 longer raise an error; further, using a list as a for-as-arithmetic
5568 counter now raises a meaningful error.
5569 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
5570 now understood by sequence creation functions such as MAKE-SEQUENCE
5572 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
5573 a STRING-INPUT-STREAM.
5574 * compiler enhancement: SIGNUM is now better able to derive the type
5576 * type declarations inside WITH-SLOTS are checked. (reported by
5578 * fixed some bugs revealed by Paul Dietz' test suite:
5579 ** incorrect optimization of TRUNCATE for a positive first
5580 argument and negative second.
5581 ** compiler failure in let-convertion during flushing dead code.
5582 ** compiler failure while deriving type of TRUNCATE on an
5583 interval, containing 0.
5584 ** ASH of a negative bignum by a negative bignum count now returns
5586 ** intersection of CONS types now canonicalizes properly, fixing
5587 inconsistencies in SUBTYPEP.
5589 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
5590 * incompatible change: The --disable-debugger command line
5591 option now clobbers the debugger at a more fundamental
5592 level, by redefining #'INVOKE-DEBUGGER instead of by
5593 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
5594 is specified by ANSI to ignore *DEBUGGER-HOOK* and
5595 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
5596 enter the debugger REPL and then suffer recursive errors
5597 because *DEBUG-IO* is also messed up in --disable-debugger mode;
5598 while under the new system, BREAK in --disable-debugger mode
5599 terminates the system just as an unhandled error would.
5600 * fixed compiler performance when processing loops with a step >1;
5601 * bug fix: DOCUMENTATION now retrieves generic function
5602 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
5603 support has been systematized, and now supports the methods
5604 specified by ANSI, along with a default method and a method for
5605 slot documentation. (reported by Nathan Froyd)
5606 * bug fix: effective methods associated with a generic function are
5607 no longer cached over a change of that generic function's method
5608 combination. (reported by Andreas Fuchs)
5609 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
5610 names a non-existent directory. (thanks to Andreas Fuchs)
5611 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
5612 the PPC platform, lead to stack corruption; this has been fixed.
5613 (reported by Rainer Joswig)
5614 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
5615 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
5616 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
5617 arithmetic in general, is now much more reliable on the PPC
5619 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
5620 platform now returns the right answer.
5621 * optimization: restored some effective method precomputation in
5622 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
5623 precomputation is now tunable.
5624 * optimization: compiler-internal data structure use has been
5625 reviewed, and changes have been made that should improve the
5626 performance of the compiler by about 20%.
5627 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
5628 simple-base-strings and simple-bit-vectors is improved.
5629 * optimization: the optimization of 32-bit logical and arithmetic
5630 functions introduced in version 0.8.3 on the x86 has been
5631 implemented on the mips, ppc and sparc platforms; an
5632 implementation of the same facility, but for 64-bit arithmetic,
5633 has been added for the alpha.
5634 * microoptimization: the compiler is better able to make use of the
5635 x86 LEA instruction for multiplication by constants.
5636 * bug fix: in some situations compiler did not report usage of
5637 generic arithmetic in (SPEED 3) policy.
5638 * bug 145b fix: compiler used wrong type specifier while converting
5639 MEMBER-types to numeric.
5640 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
5642 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
5643 index argument now works properly on the Alpha platform.
5644 * bug fix: floating point exception treatment on the Alpha platform
5646 * bug fix: FILE-POSITION works much better on string input and
5647 output streams. (thanks to Nikodemus Siivola)
5648 * bug fix: many threading/garbage collection symptoms sorted.
5649 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
5650 might be pseudo-atomic.
5651 * internal change: Stopping for GC is now done with signals not
5652 ptrace. GC is now done in whichever thread wanted it, instead of
5654 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
5656 * bug fix: result form in DO is not contained in the implicit
5658 * incompatible change: ICR structure is changed; the value part of
5659 CONTINUATION is now called LVAR; corresponding functions are
5660 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
5661 * added type deriver for ISQRT (thanks to Robert E. Brown).
5662 * bug fix: better support for loading from the command line when an
5663 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
5665 * fixed some bugs revealed by Paul Dietz' test suite:
5666 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
5667 ** ROUND and FROUND now give the right answer when given very
5668 small float arguments.
5669 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
5671 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
5672 ** (GCD 0 <negative-integer>) returned <negative-integer>.
5673 ** LCM should return a non-negative integer.
5674 ** PARSE-INTEGER returned the index of a terminator instead of the
5675 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
5676 ** PARSE-INTEGER returned an incorrect index being applied to a
5678 ** LCM with two arguments of 0 returns 0 rather than signalling
5680 ** unsigned addition of a 32-bit constant with the high bit set no
5681 longer causes an internal compiler error on the x86.
5682 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
5683 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
5684 with negative last argument.
5685 ** byte specifiers with zero size and position no longer cause
5686 an error during type derivation.
5687 ** bignum multiplication on the Alpha platform now returns the
5689 * porting: The system now builds on SuSE AMD64, although it still
5690 generates a 32-bit binary.
5691 * .fasl file incompatibility: The fasl file version number has
5692 been incremented (because of the changes to internal compiler
5693 data structures referred to above).
5695 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
5696 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
5697 more accurately, on the Darwin kernel running on PowerPC hardware.
5698 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
5699 * Compiler code deletion notes now signal a condition of type
5700 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
5701 an associated MUFFLE-WARNING restart.
5702 * The compiler now performs limited argument count validation of
5703 constant format strings in FORMAT, and where appropriate in ERROR,
5704 CERROR and WARN. (thanks to Gerd Moellmann)
5705 * New ASDF-INSTALL contrib can be used for automatic download and
5706 installation of third-party Lisp code from CCLAN or other sites
5708 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
5709 which forces another thread to execute a function supplied by the
5711 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
5712 now accept and act upon their :ELEMENT-TYPE keyword argument.
5713 (reported by Martin Atzmueller, Edi Weitz)
5714 * bug fix: FILE-POSITION now accepts position designators up to
5715 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
5716 is the greater. (thanks to Patrik Nordebo)
5717 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
5718 Kalle Olavi Niemitalo)
5719 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
5720 printable. (reported by Eric Marsden)
5721 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
5722 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
5723 * x86 bug fix in control stack exhaustion checking: now shows backtrace
5724 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
5725 (thanks to Stig Sandoe)
5726 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
5727 UNREAD-CHAR now correctly includes the unread character in the
5728 target sequence. (thanks to Gerd Moellmann)
5729 * bug fix in threaded builds: the system can now be suspended and
5730 resumed by shell job control with minimal disruption.
5731 * bug fixes in times and timezones >2038AD
5732 * better handling of "where is GNU make?" problem in build scripts
5733 (thanks to Nikodemus Siivola)
5734 * new optimization: inside a named function any reference to a
5735 function with the same name is considered to be a self-reference;
5736 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
5737 optimization quality.
5738 * new optimization on x86: logical functions and + now have
5739 optimized (UNSIGNED-BYTE 32) versions, which are automatically
5740 used when the result is truncated to 32 bits.
5741 * VALUES declaration is partially enabled.
5742 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
5743 * fixed some bugs revealed by Paul Dietz' test suite:
5744 ** The system now obeys the constraint imposed by
5745 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
5746 types form a lattice under type intersection.
5747 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
5748 ** ASSOC now ignores NIL elements in an alist.
5749 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
5750 and (1+ MOST-POSITIVE-FIXNUM) answers.
5751 ** The addition of a method with invalid qualifiers to a generic
5752 function does not cause an error to be signalled immediately;
5753 a warning is signalled, and the error is generated only on
5754 calling the generic function.
5755 * changed .fasl file version number, in part to add type codes for
5756 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
5757 obscure ANSI requirements
5759 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
5760 * fixed bug 148: failure to inline-expand a local function left
5761 garbage, confusing the compiler.
5762 * fixed bugs 3cd: structure slot readers perform type check if the
5763 slot can have an invalid value (i.e. it is either not initialized
5764 or can be written with a less specific slot writer).
5765 * bug fix: the compiler now traps array references to elements off
5766 the end of an array; previously, the bounds checking in some
5767 circumstances could go off-by-one.
5768 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
5770 * type declarations for array element types now obey the description
5771 on the CLHS page "Declaration TYPE", as per discussions on
5772 sbcl-help around 2003-05-08. This means that a declaration
5773 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
5774 declaration, all references to BAR will be asserted or assumed
5775 (with THE, so dependent on compiler policy) to involve objects of
5776 type FOO. Note that no such declaration is implied in
5777 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
5778 * declared types of functions from the "Conditions"
5779 chapter. (reported by Paul Dietz)
5780 * bug fix: CERROR accepts a function as its first argument.
5781 * bug fix: NTH an NTHCDR accept a bignum as index
5782 arguments. (reported by Adam Warner)
5783 * optimization: character compare routines now optimize comparing
5784 against a constant character. (reported by Gilbert Baumann)
5785 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
5786 argument now works properly on the MIPS platform.
5787 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
5788 * repeated evaluation of the same DEFSTRUCT, a slot of which is
5789 declared to have a functional type, does not cause an error
5791 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
5792 many :DEFAULT-INITARGS. (reported by Istvan Marko)
5793 * fixed bug: if last continuation of a deleted block has a
5794 destination, this destination should be deleted too. (reported by
5796 * fixed a bug in the bootstrap process: the host compiler's values
5797 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
5798 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
5799 test case from Patrik Nordebo)
5800 * improved the ability of the disassembler on the PPC platform to
5801 provide helpful disassembly notes.
5802 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
5803 the class in more cases than previously.
5804 * bug fix: FILE-POSITION now understands :START and :END for
5805 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
5806 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
5807 8) data. (thanks to David Lichteblau)
5808 * bug fix: it is possible to add a method to a generic function
5809 without lambda list.
5810 * bug fix: reader failed to signal END-OF-FILE inside an
5811 object representation. (reported by Nikodemus Siivola)
5812 * fixed some bugs revealed by Paul Dietz' test suite:
5813 ** LAST and [N]BUTLAST should accept a bignum.
5814 ** condition slot accessors are methods.
5815 ** (VECTOR NIL) is a subtype of STRING.
5817 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
5818 * minor incompatible change: some nonsensical specialized lambda
5819 lists (used in DEFMETHOD) which were previously ignored now signal
5821 * minor incompatible change: the system is now aware of the types of
5822 variables in the COMMON-LISP package, and will signal errors for
5823 most violations of these type constraints (where previously they
5824 were silently accepted).
5825 * minor incompatible change: COMPILE-FILE now uses the freedom
5826 afforded (ANSI 3.2.2.3) to use derived function types for
5827 functions defined in the same file. This also permits the system
5828 to warn on static type mismatches and function
5829 redefinition. (Currently it does not work with high DEBUG level.)
5830 * minor incompatible change: VALUES declaration is disabled.
5831 * When issuing notes, the compiler now signals a condition of type
5832 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
5833 restart for use in user handlers. It is expected that the
5834 COMPILER-NOTE condition will eventually become a condition
5835 supertype to a hierarchy of note types, which will then be
5836 handleable in a similar fashion. However, at the moment, no such
5837 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
5838 but it's an implementation detail, not a classification for the
5840 * Changes in type checking closed the following bugs:
5841 ** type checking of unused values (192b, 194d, 203);
5842 ** template selection based on unsafe type assertions (192c, 236);
5843 ** type checking in branches (194bc).
5844 * A short form of VALUES type specifier has ANSI meaning (it has
5845 increased the number of situations when SBCL cannot perform type
5847 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5848 keywords or constants is permissible.
5849 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5850 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5851 classes. (thanks to Antonio Martinez)
5852 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5853 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5854 argument to a pretty-print stream. Instead, it leaves any such
5855 operations to DESCRIBE-OBJECT methods.
5856 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5858 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5859 lambda lists. (thanks to David Lichteblau)
5860 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5861 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5862 (thanks to Gerd Moellmann)
5863 * fixed bug 246: increased compilation speed of long
5864 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5866 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5868 * DEFCONSTANT now throws a condition of type
5869 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5870 constant to a non-EQL value; CONTINUE and ABORT restarts
5871 respectively change and preserve the value.
5872 * fixed bug 63: The code walker, part of the implementation of CLOS,
5873 is now better at handling symbol macros.
5874 * bug fix: There is no longer an internal implementation type named
5875 CL:LENGTH. (reported by Raymond Toy)
5876 * bug fix: In macro-like defining macros/special operators the
5877 implicit block does not enclose the lambda list.
5878 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5879 enclosed in parentheses) are not suitable as type specifiers, and
5880 their use properly signals an error now.
5881 * bug fix: An argument count mismatch for a type specifier in code
5882 being compiled no longer causes an unhandled error at compile
5883 time, but signals a compile-time warning.
5884 * fixed simple vector readable printing
5885 * bug fix: DESCRIBE takes more care over whether the class
5886 precedence list slot of a class is bound before accessing it.
5887 (reported by Markus Krummenacker)
5888 * bug fix: FORMATTER can successfully compile pretty-printer format
5889 strings which use variants of the ~* directive inside.
5890 * bug fix: SEARCH now applies its TEST predicate to the elements of
5891 the arguments in the correct order. (thanks to Wolfhard Buss)
5892 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5893 in type inference. (thanks to Robert E. Brown)
5894 * bug fix: Reading in symbols with an explicit package name of ""
5895 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5896 * fixed some bugs revealed by Paul Dietz' test suite:
5897 ** NIL is now allowed as a structure slot name.
5898 ** Arbitrary numbers, not just REALs, are allowed in certain
5899 circumstances in LOOP for-as-arithmetic clauses.
5900 ** Multiple class redefinitions before slot access no longer
5901 causes a type error.
5902 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5903 association between the name and a class.
5904 ** Generic functions with non-standard method-combination and over
5905 five methods all of which return constants no longer return NIL
5906 after the first few invocations. (thanks to Gerd Moellmann)
5907 ** CALL-NEXT-METHOD with no arguments now passes the original
5908 values of the arguments, even in the presence of assignment.
5909 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5911 ** DISASSEMBLE works with closures and funcallable instances.
5912 ** ADD-METHOD now returns the generic function, not the new method.
5913 ** FIND-METHOD signals an error if the lengths of the specializers
5914 is incompatible with the generic function, even if the ERRORP
5916 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5917 which its argument is a member.
5918 ** DEFCLASS only redefines the class named by its class-name
5919 argument if that name is the proper name of the class;
5920 otherwise, it creates a new class.
5921 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5922 of the UNBOUND-SLOT condition to the name of the slot.
5923 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5924 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5925 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5926 SLOT-MAKUNBOUND in the specified fashion.
5928 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5929 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5930 cross-compilation host. As a consequence, we can now bootstrap our
5931 way up to SBCL starting with a bare gcc toolchain and human-readable
5932 source code (first the source to CLISP, then the source to SBCL).
5933 * A contributed module containing a partial implementation of the
5934 simple-streams interface has been included. (thanks to Rudi
5936 * A contributed module implementing the RFC1321 Message Digest
5937 Algorithm, known as MD5, has been included.
5938 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5939 no longer has any effect, as the code controlled by this feature
5940 has been deleted. (As far as we know, no-one has ever built using
5941 this feature, and its semantics were confused in any case).
5942 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5943 work on conditions (as required by the ANSI specification),
5944 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5945 expected behaviour on conditions. Users should note, however,
5946 that such behaviour is not required by the ANSI specification,
5947 and so use of this behaviour may render their code unportable.
5948 * fixed some bugs revealed by Paul Dietz' test suite:
5949 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5951 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5952 ** SXHASH on condition objects no longer returns NIL.
5953 ** :ALLOCATION :CLASS slots are better treated; their values are
5954 updated on class redefinition, and initforms inherited from
5955 superclasses are applied.
5956 ** REMOVE-METHOD returns its generic function argument even when
5957 no method was removed.
5958 ** SHARED-INITIALIZE now initializes the values of the requested
5959 slots, including those with :ALLOCATION :CLASS.
5960 ** ALLOCATE-INSTANCE now works on structure classes defined via
5961 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5963 ** SLOT-EXISTS-P now works on conditions, as well as structures
5965 ** MAKE-LOAD-FORM now has the required methods on
5966 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5967 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5968 keyword, and now implements the SLOT-NAMES argument.
5969 ** methods with &OPTIONAL arguments no longer allow too many
5970 arguments to be passed in the call without error.
5971 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5972 option is consistent with the required arguments of the generic
5973 function lambda list.
5974 * bug fix: REQUIRE accepts a string designator. (Thanks to
5976 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5977 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5978 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5979 * bug fix: The compiler now checks for duplicated variables in macro
5981 * bug fix: SETQ on globals returns the correct value.
5982 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5983 not a COMPILER-ERROR (followed by some other strange error on
5984 choosing the CONTINUE restart).
5985 * bug fix: make.sh and friends are now more consistent in the way that
5986 they look for GNU "make".
5988 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5989 * experimental native threads support (on x86 Linux >=2.4 only).
5990 This is not compiled in by default: you need to add :SB-THREAD to
5991 the target features. See the "Beyond ANSI" chapter of the manual
5993 * fix for longstanding nonANSIism: The old distinction between
5994 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5995 The return value from CL:FIND-CLASS is now a CLOS class, and
5996 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5997 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5998 * An interface to the MetaObject Protocol, as described in Kiczales,
5999 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
6000 MIT Press, 1991, is available from the SB-MOP package.
6001 * incompatible change: the SB-PCL package should now be considered
6002 a private implementation detail, and no longer a semi-private MOP
6004 * minor incompatible change: due to rearrangement for threads, the
6005 control stack and binding stack are now allocated at arbitrary
6006 addresses instead of being hardcoded per-port. Users affected by
6007 this probably have to be doing advanced things with shared
6008 libraries, and will know who they are.
6009 * minor incompatible change: Previously, all --eval forms used were
6010 processed with READ before any of them were processed with EVAL.
6011 Now each --eval form is processed with both READ and EVAL before
6012 the next --eval form is processed. (Thus package operations like
6013 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
6014 work as the user might reasonably expect.)
6015 * minor incompatible change: *STANDARD-INPUT* is now only an
6016 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
6018 * minor incompatible change: Y-OR-N-P is now character-oriented,
6019 not line oriented. Also, YES-OR-NO-P now works without errors.
6020 (thanks to Antonio Martinez)
6021 * sb-aclrepl module improvements: an integrated inspector, added
6022 repl features, and a bug fix to :trace command.
6023 * Known functions, which cannot be open coded by the backend, are
6024 considered to be able to check types of their arguments. (fixing
6025 a bug report by Nathan J. Froyd)
6026 * fixed a bug in computing method discriminating functions: It is
6027 now possible to define methods specialized on classes which have
6028 forward-referenced superclasses. (thanks to Gerd Moellmann)
6029 * fixed evaluation order in optional entries (reported by Gilbert
6031 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
6032 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
6033 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
6034 required-by-AMOP NAME argument, as well as CLASS and
6035 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
6036 * fixed bug 20: DEFMETHOD can define methods using names that are
6037 not the proper names of classes to designate class specializers.
6038 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
6039 Unix file descriptors, instead of blowing up. (thanks to Antonio
6041 * Garbage collection refactoring: user-visible change is that a
6042 call to the GC function during WITHOUT-GCING will not do garbage
6043 collection until the end of the WITHOUT-GCING. If you were doing
6044 this you were probably losing anyway.
6045 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
6046 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
6047 TYPEP the latter but not the former.
6048 * The compiler issues a full WARNING for calls to undefined functions
6049 with names from the CL package.
6050 * MAP-INTO for a vector destination is open coded. (reported by
6051 Brian Downing on c.l.l)
6052 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
6053 documentation string.
6054 * fixed some bugs revealed by Paul Dietz' test suite:
6055 ** COPY-ALIST now signals an error if its argument is a dotted
6057 ** Condition slots are now accessed more correctly in the presence
6058 of multiple initargs for a given slot.
6059 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
6060 exclude restarts of the same name associated with a different
6062 ** DEFCLASS of forward-referenced classes with another
6063 forward-referenced class in the superclasses list no longer
6065 ** Condition slots are now initialized once each, not multiple
6066 times. (thanks to Gerd Moellmann)
6067 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
6069 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
6070 ** NSET-EXCLUSIVE-OR does not return extra elements when its
6071 arguments contain duplicated elements.
6072 ** RESTART-CASE understands local macros.
6073 ** RESTART-CASE associates exactly its own restarts with a condition.
6074 ** ENDP in safe mode checks its argument to be of type LIST.
6075 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
6076 in question is unbound.
6077 ** Optimized MAKE-INSTANCE functions no longer cause internal
6078 assertion failures in the presence of duplicate initargs.
6079 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
6080 ** Side-effectful :DEFAULT-INITARGS have their side-effects
6081 propagated even in the ctor optimized implementation of
6083 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
6085 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
6086 * a better implementation of SXHASH on (simple) bit vectors,
6087 measured both in execution speed and in distribution of results
6088 over the positive fixnums, has been installed. Likewise, a better
6089 implementation of EQUAL for simple bit vectors is now available.
6090 * fixed CEILING optimization for a divisor of form 2^k.
6091 * fixed bug 240 (emitting extra style warnings "using the lexical
6092 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
6093 by Antonio Martinez)
6094 * fixed SXHASH, giving different results for NIL depending on type
6095 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
6096 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
6097 variable. (found by Rolf Wester)
6098 * SBCL does not ignore type declarations for special
6099 variables. (reported by rif on c.l.l 2003-03-05)
6100 * some bug fixes in contrib/sb-aclrepl/
6101 * fixed some bugs revealed by Paul Dietz' test suite:
6102 ** a bug in the CONS type specifier, whereby the CAR and CDR
6103 types got intertwined, has been fixed;
6104 ** the type system is now able to reason about the interaction
6105 between INTEGER and RATIO types more completely;
6106 ** APPEND, [N]REVERSE and NRECONC check that those their
6107 arguments, which must be proper lists, are really so;
6108 ** An array specialized to be unable to hold elements has been
6109 implemented, as required -- yes, really -- by ANSI;
6110 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
6111 on malformed property lists;
6113 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
6114 * incompatible packaging change: in line with Unix convention,
6115 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
6116 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
6117 * REQUIRE and PROVIDE are now optionally capable of doing something
6118 useful. See the documentation string for REQUIRE.
6119 * infrastructure for a managed SBCL contrib system: contributed
6120 modules in this release include:
6121 ** the ASDF system definition facility;
6122 ** an interface to the BSD Sockets API;
6123 ** an ACL-like convenience interface to the repl;
6124 (thanks to Kevin Rosenberg)
6125 ** an implementation of ROTATE-BYTE, with efficient implementation
6127 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
6128 gives a closer approximation to the right answer than previously.
6129 (thanks to Raymond Toy)
6130 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
6131 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
6132 optional environment arguments, as required by ANSI.
6133 * fixed bugs in other functions taking environment objects, allowing
6134 calls with an explicit NIL environment argument to be compiled
6136 * fixed bug 228: primary return values from
6137 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
6138 COMPILE or FUNCTION.
6139 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
6140 :TYPE will no longer signal errors on innocuous objects.
6141 * fixed bug 231b: SETQ is better at respecting type declarations in
6142 the lexical environment.
6143 * fixed a bug in DEFCLASS: classes named by symbols with no or
6144 unprintable packages can now be defined.
6145 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
6146 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
6147 * fixed compiler failure related to checking types of functions.
6148 (reported by Robert E. Brown)
6149 * the compiler is now much more consistent in its error-checking
6150 treatment of bounding index arguments to sequence functions: in
6151 (SAFETY 3) code, errors will be signalled in almost all cases if
6152 invalid sequence bounding indices are passed to functions defined
6153 by ANSI to operate on sequences.
6154 * fixed a bug in the build procedure: documentation of SBCL-specific
6155 packages is now preserved and available in the final Lisp image.
6156 * lifted FDEFINITION lookup out of loops in the implementation of
6157 many list operations. (thanks to Robert E. Brown)
6158 * fixed a bug in the reader: the #n# reader macro now works for
6159 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
6160 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
6161 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
6162 E. Brown and Tony Martinez respectively)
6163 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
6164 SLOT-BOUNDP: in particular, it is now able to optimize them much
6165 better, and is now not vulnerable to having packages renamed.
6166 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
6167 always called when a slot is not present in an instance. (thanks
6169 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
6170 longer signal an error on unreading a character following EOF on
6171 the previous constituent stream. (thanks to Tony Martinez)
6172 * fixed some bugs revealed by Paul Dietz' test suite:
6173 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
6174 not just nonnegative fixnums;
6175 ** the logical bit-array operators such as BIT-AND now accept an
6176 explicit NIL for their "opt-arg" argument (to indicate a
6177 freshly-consed result bit-array);
6178 ** ELT now signals an error on an invalid sequence index in safe
6180 ** the type system is now cleverer about negations of numeric
6181 types, and consequently understands the BIGNUM and RATIO types
6183 ** the type system is now cleverer about the interaction between
6184 INTEGER and RATIO types: while bugs still remain, many more
6185 cases are accurately computed;
6186 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
6187 if it is in the last clause;
6188 ** CONSTANTLY now correctly returns a side-effect-free function in
6190 ** DECLARE is no longer treated as a special-operator; in
6191 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
6192 * incremented fasl file version number due to the change in the
6193 DEFSTRUCT-SLOT-DESCRIPTION structure.
6195 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
6196 * minor incompatible change: code processed by the "interpreter" or
6197 EVAL now has a compilation optimization policy of (DEBUG 2)
6198 (changed from (DEBUG 1)) to improve debuggability of interactive
6199 development, and to allow the use of the debug RETURN command in
6201 * an experimental implementation of the RETURN command for the
6202 debugger has been included. (thanks to Frederik Kuivinen)
6203 * fixed bug 62: constraints were not propagated into a loop.
6204 * fixed bug in embedded calls of SORT (reported and investigated by
6206 * fixed some bugs revealed by Paul Dietz' test suite:
6207 ** printing and reading of arrays with some dimensions having
6208 length 0 (thanks to Gerd Moellmann);
6209 ** BOA constructor with &AUX argument without a default value does
6210 not cause a type error;
6211 ** CONSTANTP now returns true for all self-evaluating objects.
6213 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
6214 * fixed bug 127: DEFSTRUCT now does not clobber old structure
6215 accessors that are related by inheritance, as specified in the
6216 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
6217 Valtteri Vuorikoski)
6218 * The compiler is now able to inline functions that were defined in
6219 a complex lexical environment (e.g. inside a MACROLET).
6220 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
6222 * Support for the upcoming FreeBSD-5.0 release has been included.
6223 (thanks to Dag-Erling Smorgrav)
6224 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
6225 effect when it is not in a toplevel context.
6226 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
6227 stand a better chance of being correct. (thanks to Gerd
6229 * fixed bug in COERCE, which now signals an error on coercing a
6230 rational to a bounded real type which excludes the expected
6232 * The compiler is now able to derive types more accurately from the
6233 COERCE and COMPILE functions.
6234 * fixed bug 223: functional binding is considered to be constant
6235 only for symbols in the CL package.
6236 * fixed bug 231: SETQ did not check the type of a variable being set
6237 (reported by Robert E. Brown)
6238 * A new optimization for MAKE-INSTANCE has been included, fixing
6239 various bugs (including relating to :ALLOCATION :CLASS slots and
6240 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
6242 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
6243 ** As required by ANSI, LOOP now disallows anonymous collection
6244 clauses such as COLLECT I in conjunction with aggregate boolean
6245 clauses such as THEREIS (= I 1);
6246 ** LOOP now signals an error when any variable is reused in the
6247 same loop (including the potentially useful construct analogous
6248 to WITH A = 1 WITH A = (1+ A);
6249 ** IT is only a special loop symbol within the first clause of a
6250 conditional loop clause;
6251 ** LOOP with a typed iteration variable over a hashtable now
6252 signals a type error iff it should.
6253 * fixed some other bugs revealed by Paul Dietz' test suite:
6254 ** FILE-STREAM now names the class previously known as FD-STREAM;
6255 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
6256 argument) no longer signals an error;
6257 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
6258 of the slot symbol, rather than using the current package
6259 ((:CONC-NAME "") continues to intern the slot's name in the
6261 * incremented fasl file version number, because of the incompatible
6262 change to the DEFSTRUCT-DESCRIPTION structure, and again because
6263 of the new implementation of DEFINE-COMPILER-MACRO.
6265 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
6266 * Support for building SBCL for MIPS platforms running in
6267 little-endian mode has now been checked in, and basic
6268 functionality on said platforms verified.
6269 * minor incompatible change: PCL now records the pathname of a file
6270 in which methods and the like are defined, rather than its
6272 * minor incompatible change: TRUENAME now considers the truename of
6273 a file naming a directory to be the pathname with :DIRECTORY
6274 component indicating that directory.
6275 * minor incompatible change: a NAMED clause in the extended form of
6276 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
6277 reason for the previous behaviour is unclear.
6278 * more systematization and improvement of CLOS and MOP conformance
6279 in PCL (thanks to Gerd Moellman and Pierre Mai):
6280 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
6282 ** DEFINE-METHOD-COMBINATION no longer signals an error for
6283 primary methods with no specializers;
6284 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
6286 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
6287 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
6288 FORWARD-REFERENCED-CLASSes; error reporting on
6289 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
6291 ** SXHASH on CLOS instances now uses a slot internal to the
6292 instance to return different numbers on distinct instances,
6293 while preserving the same return value through invocations of
6295 ** DEFMETHOD signals errors when methods with longer incongruent
6296 lambda lists are added to generic functions;
6297 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
6298 CLASS, as specified in AMOP;
6299 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
6300 on the order returned by the primary method for classes of
6301 class STANDARD-CLASS;
6302 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
6303 * fixed some bugs shown by Paul Dietz' test suite:
6304 ** DOLIST puts its body in TAGBODY;
6305 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
6307 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
6308 value producing form;
6309 ** if more variables are given to PROGV than values, extra
6310 variables are bound and made to have no value;
6311 ** NSUBSTITUTE on list arguments gets the right answer with
6313 ** ELT signals an error of type TYPE-ERROR when the index argument
6314 is not a valid sequence index;
6315 ** LOOP signals (at macroexpansion time) an error of type
6316 PROGRAM-ERROR when duplicate variable names are found;
6317 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
6318 ** FUNCALL of special-operators now cause an error of type
6320 ** PSETQ now works as required in the presence of side-effecting
6321 symbol-macro places;
6322 ** NCONC accepts any object as its last argument;
6323 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
6325 ** loop-for-as-package does not require a package to be explicitely
6327 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
6329 * fixed bug 166: compiler preserves "there is a way to go"
6330 invariant when deleting code.
6331 * fixed bug 172: macro lambda lists with required arguments after
6332 &REST arguments now cause an error to be signalled. (thanks to
6334 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
6335 bug. (thanks to Matthew Danish)
6336 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
6338 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
6339 arguments are lexically rebound. (thanks to Gerd Moellmann and
6341 * fixed bug 194: error messages are now more informative when there
6342 is no primary method applicable in a call to a generic
6343 function. (thanks to Gerd Moellmann)
6344 * fixed bug in command line argument checking (thanks to Julian
6346 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
6347 (thanks to Matthew Danish)
6348 * incremented fasl file version number, because of the
6349 SXHASH-related changes in the layout of CLOS data structures
6351 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
6352 * minor incompatible change: The runtime (the Unix executable named
6353 "sbcl") is now much pickier about the .core files it will load.
6354 Essentially it now requires .core files to descend from the same
6355 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
6356 as the runtime does. (The intent is to prevent the crashes which
6357 can occur, and which can even be reported as mysterious failures,
6358 when people patch the sources or change the build parameters
6359 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
6360 sbcl and .core files.)
6361 * fixed bug: VALUES-LIST is no longer optimized away.
6362 * fixed bug 142: The FFI conversion of C string values to Lisp
6363 string values no longer conses excessively. (thanks to Nathan
6364 Froyd porting Raymond Toy's fix to CMU CL)
6365 * began to systematize and improve MOP conformance in PCL (thanks to
6366 Nathan Froyd, Gerd Moellman and Pierre Mai):
6367 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
6369 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
6370 ** FINALIZE-INHERITANCE is now called on class finalization;
6371 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
6372 argument precedence order.
6373 * fixed bug 202: The compiler no longer fails on functions whose
6374 derived types contradict their declared type.
6375 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
6376 so it can be non-toplevel.
6377 * The fasl file version number has changed (because of the new
6378 implementation of DEFMACRO).
6379 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
6380 safe code, that any length requirement by their type-specifier
6381 argument is valid. The exceptions to this are described in bug
6383 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
6384 functions now check the types of their inputs as required by ANSI.
6385 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
6386 introduced symbol is DECLAREd to be SPECIAL.
6387 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
6388 * fixed bug: :COUNT argument to sequence functions may be negative
6389 * fixed bug: body of DO-SYMBOLS may contain declarations
6390 * fixed bug: PUSHNEW now evaluates its arguments from left to right
6391 (reported by Paul F. Dietz, fixed by Gerd Moellman)
6392 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
6393 symbol macro only once
6394 * fixed printing of call frame when argument list is unavailable
6395 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
6396 * compiler no longer signals WARNING on unknown keyword
6399 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
6400 * A beta-quality port to the mips architecture running Linux,
6401 based on the old CMUCL backend, has been made. It has been tested
6402 on a big-endian kernel, and works sufficiently well to be able to
6403 rebuild itself; it has not been tested in little-endian mode.
6404 * fixed an inconsistency between gencgc.c and purify.c which made
6405 dumping/loading .core files unreliable
6406 * fixed bug 120a: The compiler now deals correctly with IFs where
6407 the consequent is the same as the alternative, instead of
6408 misderiving the return type. (thanks to Alexey Dejneka)
6409 * fixed bug 113: Logical pathnames are now dumpable (the logical
6410 host is resolved at load-time, throwing an error if it is not
6412 * fixed bug 174: FORMAT's error message is slightly clearer when a
6413 non-printing character is used in a format directive.
6414 * fixed several bugs in compiler checking of type declarations, i.e.
6415 violations of the Python "declarations are assertions" principle
6416 (thanks to Alexey Dejneka)
6417 * fixed several bugs in PCL's error checking (thanks to Gerd
6419 * fixed bug: printing of FILE-ERROR (thanks to Antonio
6421 * fixed bug in compilation of functions as first class values
6422 (thanks to Antonio Martinez-Shotton)
6423 * The compiler's handling TYPE-ERRORs which it can prove will
6424 inevitably happen at runtime has been cleaned up and corrected
6425 in several ways. (thanks to Alexey Dejneka)
6426 * improved argument type checking for various basic arithmetic
6427 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
6428 lavished on them in the past that they can be compiled in many
6429 ways in different special cases
6430 * fixed bug 181: compiler checks validity of user supplied type
6432 * cleaned up code flushing in optimization: Function calls which
6433 should signal errors for safety purposes (e.g. which ANSI says
6434 should signal errors when their arguments are of incorrect type)
6435 are no longer optimized away.
6436 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
6437 * incremented fasl file version number, because changes in the
6438 implementation of sequence functions like COERCE caused
6439 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
6440 in old inline expansions) to become undefined. (Actually these
6441 changes were later undone, so we might very well be binary
6442 compatible with 0.7.7 after all, but leaving the version number
6443 incremented seemed like the simplest and most conservative
6446 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
6447 * An alpha-quality port to the parisc architecture running Linux,
6448 based on the old CMUCL backend, has been made. This, even more so
6449 than the other backends, should be considered still a work in
6450 progress; known problems include that the Linux kernel in 64-bit
6451 mode does not propagate the correct sigcontext structure to
6452 userspace, and consequently SBCL on a parisc64 kernel will not
6454 * fixed bug 189: The compiler now respects NOTINLINE declarations for
6455 functions declared in FLET and LABELS. (I.e. "LET conversion" is
6456 suppressed.) Also now that the compiler is looking at declarations
6457 in the environment, it checks optimization declarations as well,
6458 and suppresses inlining when (> DEBUG SPEED).
6459 * More fixes have been made to treatment of floating point exception
6460 treatment and other Unix signals. In particular, floating point
6461 exceptions no longer cause Bus errors on the SPARC/Linux platform.
6462 * The detection and handling of control stack exhaustion (infinite
6463 or very deeply nested recursion) has changed. Stack exhaustion
6464 detection is now done by write-protecting pages at the OS level
6465 and applies at all optimization settings; when found, a
6466 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
6467 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
6468 be caught using IGNORE-ERRORS.
6469 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
6470 correctly when transforming recursive LABELS functions to LETs.
6471 (thanks to Alexey Dejneka)
6472 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
6473 that are names of constants or global variables.
6474 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
6475 alien routines with docstrings.
6476 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
6477 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
6479 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
6480 (thanks to Eric Marsden)
6481 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
6482 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
6483 * Bug fix: The SPARC backend can now compile functions involving
6484 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
6485 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
6486 to a functions expecting a PATHNAME-DESIGNATOR.
6487 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
6488 lambda lists. (thanks to Alexey Dejneka)
6489 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
6490 functions so that EXPORTing the name of the class doesn't cause
6491 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
6492 to Antonio Martinez for reporting this)
6493 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
6494 constant-folded without failing an assertion. (thanks to Einar
6495 Floystad Dorum for reporting this)
6496 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
6497 types are now dealt with more correctly by the compiler.
6498 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
6499 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
6500 behaviour analogous to RENAME-FILE. This puts its behaviour more
6501 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
6503 * The fasl file version number has changed again. (because of the
6504 bug fix involving the names of PCL MAKE-INSTANCE functions)
6506 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
6507 * bug fix: Floating point exceptions are treated much more
6508 consistently on the x86/Linux and PPC/Linux platforms.
6509 * Array initialization with :INITIAL-ELEMENT is now much faster for
6510 cases when the compiler cannot open code the array creation, but
6511 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
6512 array accesses have also seen a speed increase.
6513 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
6514 specified. (This was at the root of some bad interactions between
6515 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
6517 * bug fix: Internal error arguments for undefined functions are now
6518 computed correctly on the PPC/Linux platform.
6519 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
6520 Raymond Toy's patch for CMU CL)
6521 * Support for the Solaris 9 operating environment has been included
6522 (thanks to Daniel Merritt)
6523 * A very ugly but hopefully complete draft of the missing FFI chapter
6524 of the manual has been created by reformatting the corresponding
6525 CMU CL manual chapter into (currently very ugly and incoherent)
6526 DocBook and bringing it up to date for SBCL behavior. Thus, the
6527 manual is now essentially complete, at least by my extreme
6528 once-and-only-once standards, whereby it's acceptable to refer to
6529 the doc strings of SB-EXT functions as the primary documentation.
6530 * The fasl file version number has changed again, due to cleanup of
6531 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
6532 is no longer a static symbol.)
6534 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
6535 * SBCL now builds with OpenMCL (version 0.12) as the
6536 cross-compilation host; also, more progress has been made toward
6537 bootstrapping under CLISP.
6538 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
6540 * bug 158 fixed: The compiler can now deal with integer loop
6541 increments different from 1; fixing this turned out also to fix
6543 * bug 169 fixed: no more bogus warnings about using lexical bindings
6544 despite the presence of perfectly good SPECIAL declarations (thanks
6545 to David Lichteblau)
6546 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
6547 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
6548 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
6550 * bug 180 fixed: Method combination specifications no longer ignore
6551 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
6552 * bug fix: Structure type predicate functions now check their argument
6553 count as they should.
6554 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
6555 correctly. (thanks to Pierre Mai)
6556 * minor incompatible change: The --noprogrammer option is deprecated
6557 in favor of the new --disable-debugger option, which is very similar.
6558 (The major difference is that it takes effect at a slightly different
6559 time at startup, causing handling of errors in --sysinit and
6560 --userinit files will be affected differently.) The
6561 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
6562 been added to allow this functionality to be controlled from ordinary
6563 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
6564 maintainers, who might want to run non-interactive scripts to
6565 build SBCL cores which will later be used interactively.)
6566 * minor incompatible change: The LOAD function no longer, when given
6567 a wild pathname to load, loads all files matching that pathname.
6568 Instead, an error of type FILE-ERROR is signalled.
6570 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
6571 * bug 147 fixed: The compiler preserves its block link/count
6572 invariants more correctly now so that it doesn't crash. (thanks
6574 * Dynamic loading of object files in OpenBSD is now supported. (thanks
6576 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
6577 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
6578 no-value-for-this-character as NIL (as specified by ANSI).
6579 * HOST-NAMESTRING on physical pathnames now returns a string that is
6580 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
6581 (thanks to Christophe Rhodes)
6582 * The Alpha port handles icache flushing more correctly. (thanks to
6584 * More progress has been made toward bootstrapping under CLISP. (thanks
6585 to Christophe Rhodes)
6586 * The fasl file format has changed again, because dynamic loading
6587 on OpenBSD (which has non-ELF object files) motivated some cleanups
6588 in the way that foreign symbols are transformed and passed around.
6589 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
6590 is no longer treated as whitespace by the reader, but instead as
6591 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
6592 |A
\x7fB|, instead of A as it used to.
6594 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
6595 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
6596 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
6597 * SBCL now runs on the PPC archtiecture under Linux. It actually did
6598 this as of 0.7.1.45, but was left out of the previous news section
6599 (thanks to Dan Barlow)
6600 * SBCL now runs on the Solaris operating system on SPARC architectures
6601 (thanks to Christophe Rhodes's port of the CMUCL runtime)
6602 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
6603 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
6604 * SPARC backend cleanups, allowing builds of cores optimized for V8
6605 and V9 SPARCS, and also emission of code targeted to a particular
6606 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
6608 * SBCL is closer to bootstrapping under CLISP, thanks to various
6609 fixes by Christophe Rhodes.
6610 * The fasl file format has changed again, to allow the compiler's
6611 INFO database to support symbol macros.
6612 * The user manual (in doc/) is formatted into HTML more nicely.
6613 (thanks to coreythomas)
6614 * The system is smarter about SUBTYPEP relationships, especially
6615 those involving NOT types (including types such as ATOM which are
6616 represented internally using NOT types). Thus SUBTYPEP is less
6617 likely to return (VALUES NIL NIL) in general, and in particular
6618 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
6620 * The fasl file format has changed again, because the internal
6621 representation of types now includes a new slot to support the new
6622 SUBTYPEP-of-NOT-types logic.
6623 * (not a change in the main branch of SBCL, but a related prototype
6624 which can hopefully be merged into the main branch of SBCL in the
6625 future:) Brian Spilsbury has produced a Unicode-enabled variant of
6626 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
6627 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
6628 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
6629 dispatch macro character combinations. (thanks to Alexey Dejneka)
6630 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
6631 that superficially look like logical namestrings correctly.
6632 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
6634 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
6635 default supplied-p) for &optional and &key arguments. (thanks to
6638 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
6639 * incompatible change: The compiler is now less aggressive about
6640 tail call optimization, doing it only when (> SPACE DEBUG) or
6641 (> SPEED DEBUG). (This is an incompatible change because there are
6642 programs which relied on the old CMU-CL-style behavior to optimize
6643 away their unbounded recursion which will now die of stack overflow.)
6644 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
6645 for non-GENCGC systems has been increased to 20M (since that
6646 seems much closer to the likely performance optimum for modern
6647 systems than the old 4M value was)
6648 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
6649 and *DEBUG-PRINT-LEVEL*
6650 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
6651 of CMU CL's support for SPARC, and various endianness and other
6652 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
6653 * new syntactic sugar for the Unix command line: --load foo.bar is now
6654 an alternate notation for --eval '(load "foo.bar")'.
6656 ** The system now detects stack overflow and handles it gracefully,
6657 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
6658 optimization settings. (This is a good thing in general, and
6659 its introduction in this version should be particularly timely
6660 for anyone whose code fails because of suppression of tail
6662 ** The system now hunts for the C variable "environ" in a more
6663 devious way, to avoid segfaults when the C library version differs
6664 between compile time and run time. (thanks to Christophe Rhodes)
6665 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
6666 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
6667 ** The compiler no longer issues bogus style warnings for undefined
6668 classes in the same source file as the DEFCLASSes which defined
6669 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
6671 ** fixes in CONDITION class precedence list for undefined function
6672 errors (thanks to Alexei Dejneka)
6673 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
6674 correctly. (thanks to Dan Barlow)
6675 ** portability fixes aiming at bootstrapping under CLISP (thanks
6676 to Dave McDonald and Christophe Rhodes)
6677 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
6678 ** fixes in type translation and and type inference (thanks to
6680 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
6681 ** various fixes in the new ports (thanks to Dan Barlow)
6682 * several changes related to debugging:
6683 ** suppression of tail recursion, as noted above
6684 ** stack overflow detection, as noted above
6685 ** The default implementation of TRACE has changed. :ENCAPSULATE T
6686 is now the default. (For some time encapsulation has been more
6687 reliable than the breakpoint-based :ENCAPSULATE NIL
6688 implementation, at least on X86 systems; and I just noticed that
6689 encapsulation also seems closer to the spirit of the ANSI
6692 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
6694 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
6695 up properly again. (There was a packaging bug in 0.7.0 which
6696 left their definitions in SB-SYS::LOAD-FOREIGN and
6697 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
6698 vital for most things which interface to C-level interfaces,
6699 like extensions working with sockets or databases or
6700 Perl-compatible regexes or whatever, and the need to fix
6701 this bug is the main reason that 0.7.1 was released so
6703 ** DEFGENERIC is now choosier about the methods it redefines, so that
6704 reLOADing a previously-LOADed file containing DEFGENERICs does
6705 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
6706 cycle now works as it should. (thanks to Alexey Dejneka)
6707 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
6708 fixed by Christophe Rhodes. (He actually submitted this patch
6709 months ago, and I delayed until after 0.7.0.)
6710 ** Bug 111 (internal compiler confusion about runtime checks on
6711 FUNCTION types) was fixed by Alexey Dejneka.
6712 * Some internal cleanups (getting rid of variables which aren't
6713 needed now that the byte interpreter is gone) caused the fasl
6714 file format number to change again.
6716 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
6717 * major incompatible change: The default fasl file extension, i.e. the
6718 default extension for files produced by COMPILE-FILE, has changed
6719 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
6721 ** There are many changes in the implementation of the compiler.
6722 SBCL is now essentially a compiler-only implementation of ANSI
6723 Common Lisp. EVAL still "interprets" a few special cases, but
6724 almost all the interesting cases are handled by creating
6725 a LAMBDA expression, calling COMPILE on it, then calling
6726 FUNCALL on the result.
6727 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
6728 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
6729 Since the code is newer, there might still be some new bugs
6730 (though not as many as before Martin Atzmueller's fixes:-). But
6731 the new code is substantially simpler and clearer, and hopefully
6732 any remaining bugs will be simpler, less fundamental, and more
6733 fixable then the bugs in the old code.
6734 ** The revised compiler is still a little unsteady on its feet.
6736 *** The debugging information it produces (particularly the names
6737 of FUNCTION objects) is sometimes much less useful than what
6738 the old compiler produced.
6739 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
6740 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
6741 within a MACROLET) has been temporarily weakened.
6742 ** There are new compiler optimizations for various functions:
6743 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
6744 FIND-IF-NOT, POSITION-IF-NOT, and FILL
6745 *** the math functions TRUNCATE, FLOOR, and CEILING
6746 *** the function-of-all-trades COERCE
6747 Mostly these should be transparent, but there's one
6748 potentially-annoying problem (bug 117): when the compiler
6749 inline-expands a function and does type analysis on the result,
6750 it can create control paths which have type mismatches, and
6751 when it can't prove that those control paths aren't taken,
6752 it will issue WARNINGs about the type mismatches. This is
6753 a particular problem in practice for the new sequence functions.
6754 It's not clear how this should be fixed, and for now, a
6755 workaround is given in the entry for 117 in the BUGS file.
6756 ** (Because of the interaction between the two previous items --
6757 occasional inlining problems and new inline expansions -- some
6758 of the new sequence function optimizations won't really kick in
6759 completely until debugging information, and then inlining, are
6760 straightened out in some future version.)
6761 * minor incompatible changes:
6762 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
6763 DIRECTORY no longer implicitly promotes NIL slots of its
6764 pathname argument to :WILD. In particular, when you ask for the
6765 contents of a directory (which you used to be able to do without
6766 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
6767 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
6768 ** changes in behavior that ANSI explicitly defines to be
6769 implementation dependent:
6770 *** The new compiler-only implementation still conforms with ANSI,
6771 but acts a little different than before. Besides the obvious
6772 changes in performance tradeoffs (that the cost per form passed
6773 to EVAL has gone up, and the cost per form executed by EVAL
6774 has gone down), the behavior of the system changes a little
6775 because there are no longer any interpreted function objects.
6776 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
6777 e.g. doing COMPILE on the output of interactive DEFUN is
6779 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
6781 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
6782 has changed from (:CL) to NIL.
6783 *** The CHAR-NAME of unprintable ASCII characters which, unlike
6784 e.g. #\Newline and #\Tab, don't have names specified in the
6785 ANSI Common Lisp standard, is now based on their ASCII symbolic
6786 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
6787 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
6788 are no longer used for output.
6789 ** changes in internal implementation constants:
6790 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
6791 4 million. (If your application spends a lot of time GCing and
6792 you have a lot of RAM, you might want to experiment with
6793 increasing it even more.)
6794 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
6795 However, almost all old code should still continue to work without
6796 immediate update, as SB-C-CALL is now a (deprecated) nickname
6798 ** Old operator names in the style DEF-FOO are now deprecated in
6799 favor of new corresponding names DEFINE-FOO, for consistency with
6800 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
6801 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
6802 internal symbols, but a few supported extensions like
6803 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
6804 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
6805 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
6806 etc. as you get deeper into recursive calls to the debugger
6807 command loop, instead of the old "5]", "5]]", "5]]]"
6808 sequence. (I was motivated to do this when squabbles between
6809 ILISP and SBCL left me very deeply nested in the debugger. In the
6810 short term, this change will probably provoke more ILISP/SBCL
6811 squabbles, but hopefully it will be an improvement in the long run.)
6812 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
6813 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
6814 function, since declaiming return types involving aliens is
6815 (1) annoyingly messy to do by hand and (2) vital to efficient
6816 compilation of code which calls such functions.
6817 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
6818 longer reexported by the SB-EXT package. They're solely useful
6819 for alien code, so it seems more logical that you should get
6820 them from the SB-ALIEN package, not in SB-EXT.
6821 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
6822 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
6823 features. Instead, the code that they used to control is always
6824 built into the system.
6825 * many other bug fixes
6826 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
6827 advantage of the new EVAL-WHEN stuff and to clean them up in
6828 general, and they are now more ANSI-compliant in a number of
6829 ways. Martin Atzmueller is responsible for a lot of this.
6830 ** Besides the cleanups discussed above, Martin Atzmueller fixed
6832 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
6833 *** correct ERROR type for various file operations
6834 *** some fixes for Lisp streams
6835 *** DEFMETHOD syntax checking
6836 *** changing old weird representation of debug information as
6837 strings (which, among their other deficiencies, don't transform
6838 correctly when you rename packages, and don't change their
6839 print representation when you change things like *PACKAGE*
6840 and *PRINT-LENGTH*) to symbols and lists of symbols
6841 He also made several improvements and fixed several bugs in DESCRIBE.
6842 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6844 *** misbehavior of WRITE-STRING/WRITE-LINE
6845 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6846 and several other LOOP problems as well
6847 *** DIRECTORY when similar filenames are present
6848 *** DEFGENERIC with :METHOD options
6849 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6850 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6851 *** argument ordering in FIND with :TEST option
6852 *** mishandled package designator argument in APROPOS-LIST
6853 *** various problems in the backquote readmacro
6854 *** a bug in APROPOS
6855 *** probably some others that I'm not describing very well here,
6856 since the CVS log documents them by reference to sbcl-devel
6857 messages, and the SourceForge archives aren't working well.:-(
6858 ** Dan Barlow improved the Alpha port (and is making progress on the
6859 PPC port, for those of you who think different).
6860 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6861 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6862 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6863 continues to work on the SPARC port (for those of you in a position
6864 to look down upon our little PC-compatible boxes from a great height).
6865 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6866 and uses that copy, rather than the current dynamic value, when
6867 it's trying to decide whether to truncate output. Thus e.g.
6868 (let ((*print-lines* 50))
6869 (pprint-logical-block (stream nil)
6871 (let ((*print-lines* 8))
6872 (print (aref possiblybigthings i) stream)))))
6873 should now truncate the logical block only at 50 lines, instead of
6874 often truncating it at 8 lines, as it did before.
6875 * The doc/cmucl/ directory, containing old CMU CL documentation
6876 from the time of the fork, is no longer part of the base system.
6877 SourceForge has shut down its anonymous FTP service, and with it
6878 my original plan for distributing the old CMU CL documentation
6879 there. For now, if you need these files you can download an old
6880 SBCL source release and extract them from it.
6881 * The fasl file version number changed again, for dozens of reasons,
6882 some of which are apparent above.
6884 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6885 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6886 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6887 patch, so that DISASSEMBLE output is much nicer.
6888 * The code in the SB-PROFILE package now seems reasonably stable.
6889 I still haven't decided what the final interface should look like
6890 (I'd like PROFILE to interact cleanly with TRACE, since both
6891 facilities use function encapsulation) but if you have a need
6892 for profiling now, you can probably use it successfully with
6893 the current CMU-CL-style interface.
6894 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6895 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6896 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6897 link now returns the dangling link itself, and for similar
6898 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6899 link itself. (In these cases the old code signalled an error and
6900 looped endlessly, respectively.) Thus, DIRECTORY now works even
6901 in the presence of dangling and cyclic symbolic links.
6902 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6903 is now a supported extension again, since the consensus on
6904 sbcl-devel was that it can be useful for ordinary development
6905 work, not just for debugging SBCL itself.
6906 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6907 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6908 that currently-defined functions might be redefined later with
6909 different return types.
6910 * Hash tables can be printed readably, as inspired by CMU CL code
6911 of Eric Marsden and SBCL code of Martin Atzmueller.
6912 * better error handling in CLOS method combination, thanks to
6913 Martin Atzmueller porting Pierre Mai's CMU CL patches
6914 * more overflow fixes for >16Mbyte I/O buffers
6915 * A bug in READ has been fixed, so that now a single Ctrl-D
6916 character suffices to cause end-of-file on character streams.
6917 In particular, now you only need one Ctrl-D at the command
6918 line (not two) to exit SBCL.
6919 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6921 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6922 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6923 does the right thing.
6924 * The implementation of some type tests, especially for CONDITION
6925 types, is now tidier and maybe faster, due to CMU CL code
6926 originally by Douglas Crosher, ported by Martin Atzmueller.
6927 * Some math functions have been fixed, and there are new
6928 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6929 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6930 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6931 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6932 likely to be built into sbcl-0.7.0.)
6933 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6934 CL, ported to SBCL by Martin Atzmueller)
6935 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6936 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6937 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6938 * There's a new slam.sh hack to shorten the edit/compile/debug
6939 cycle for low-level changes to SBCL itself, and a new
6940 :SB-AFTER-XC-CORE target feature to control the generation of
6941 the after-xc.core file needed by slam.sh.
6942 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6943 COMPILE-FILE is no longer supported, so that now every function
6944 gets an entry point, so that block compilation looks a little
6945 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6946 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6947 returns the number of bytes consed since the system started,
6948 rather than the number consed since the first time the function
6949 was called. (The new definition parallels ANSI functions like
6950 CL:GET-INTERNAL-RUN-TIME.)
6951 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6952 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6953 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6954 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6955 * Fasl file version numbers are now independent of the target CPU,
6956 since historically most system changes which required version
6957 number changes have affected all CPUs equally. Similarly,
6958 the byte fasl file version is now equal to the ordinary
6961 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6962 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6963 is no longer recognized. I apologize for this, because it was
6964 listed in SB-EXT as a supported extension, but I found that
6965 its existing behavior was poorly specified, as well as incorrectly
6966 specified, and it looked like too much of a mess to straighten it
6967 out. I have enough on my hands trying to get ANSI stuff to work..
6968 * many patches ported from CMU CL by Martin Atzmueller, with
6969 half a dozen bug fixes in pretty-printing and the debugger, and
6970 half a dozen others elsewhere
6971 * fixed bug 13: Floating point infinities are now supported again.
6972 They might still be a little bit flaky, but thanks to bug reports
6973 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6974 as flaky as they were.
6975 * The --noprogrammer command line option is now supported. (Its
6976 behavior is slightly different in detail from what the old man
6977 page claimed it would do, but it's still appropriate under the
6978 same circumstances that the man page talks about.)
6979 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6980 are now supported, and enabled by default. Thus, the compiler can
6981 handle many floating point and complex operations much less
6982 inefficiently. (Thus e.g. you can implement a complex FFT
6984 * The compiler now detects type mismatches between DECLAIM FTYPE
6985 and DEFUN better, and implements CHECK-TYPE more correctly, and
6986 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6987 thanks to patches from Martin Atzmueller.
6988 * various fixes to make the cross-compiler more portable to
6989 ANSI-conforming-but-different cross-compilation hosts (notably
6990 Lispworks for Windows, following bug reports from Arthur Lemmens)
6991 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6992 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6993 fixed thanks to Pierre Mai's CMU CL patches.
6994 * fixes to keep the system from overflowing internal counters when
6995 it tries to use i/o buffers larger than 16M bytes
6996 * fixed bug 45a: Various internal functions required to support
6997 complex special functions have been merged from CMU CL sources.
6998 (When I was first setting up SBCL, I misunderstood a compile-time
6999 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
7000 * improved support for type intersection and union, fixing bug 12
7001 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
7002 more obscure bugs as well
7003 * some steps toward byte-compiling non-performance-critical
7004 parts of the system, courtesy of patches from Martin Atzmueller
7005 * Christophe Rhodes has made some debian packages of sbcl at
7006 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
7007 From his sbcl-devel e-mail of 2001-04-08 they're not completely
7008 stable, but are nonetheless usable. When he's ready, I'd be happy
7009 to add them to the SourceForge "File Releases" section. (And if
7010 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
7011 * new fasl file format version number (because of changes in
7012 internal representation of (OR ..) types to accommodate the new
7013 support for (AND ..) types, among other things)
7015 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
7016 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
7018 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
7020 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
7021 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
7022 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
7023 * DESCRIBE now works on structure objects again.
7024 * Most function call argument type mismatches are now handled as
7025 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
7026 know whether the function will be redefined before the call is
7027 executed. (The compiler could flag local calls with full WARNINGs,
7028 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
7029 it doesn't keep track of enough information to know whether calls
7030 are local in this sense.)
7031 * Compiler output is now more verbose, with messages truncated
7032 later than before. (There should be some supported way for users
7033 to override the default verbosity, but I haven't decided how to
7034 provide it yet, so this behavior is still controlled by the internal
7035 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
7036 src/compiler/ir1util.lisp.)
7037 * Fasl file format version numbers have increased again, because
7038 support for the Gray streams extension changes the layout of the
7039 system's STREAM objects.
7040 * The Gray subclassable streams extension now works, thanks to a
7041 patch from Martin Atzmueller.
7042 * The full LOAD-FOREIGN extension (not just the primitive
7043 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
7044 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
7045 but like most other programs, it defaults to copying the Unix
7046 environment from the original process instead of starting the
7047 new process in an empty environment.
7048 * Extensions which manipulate the Unix environment now support
7049 an :ENVIRONMENT keyword option which doesn't smash case or
7050 do other bad things. The CMU-CL-style :ENV option is retained
7051 for porting convenience.
7052 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
7053 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
7055 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
7057 * A patch from Martin Atzmueller seems to have solved the SIGINT
7058 problem, and as far as we know, signal-handling now works cleanly.
7059 (If you find any new bugs, please report them!)
7060 * The system no longer defaults Lisp source file names to types
7061 ".l", ".cl", or ".lsp", but only to ".lisp".
7062 * The compiler no longer uses special default file extensions for
7063 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
7064 seems to expect a single default extension for all compiled code,
7065 and there's no compelling reason to try to stretch the standard
7066 to allow two different extensions.) Instead, byte-compiled files
7067 default to the same extension as native-compiled files.
7068 * Fasl file format version numbers have increased again, because
7069 a rearrangement of internal implementation packages made some
7070 dumped symbols in old fasl files unreadable in new cores.
7071 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
7072 many fewer weird special cases.
7073 * Bug #17 (differing COMPILE-FILE behavior between logical and
7074 physical pathnames) has been fixed, and some related misbehavior too,
7075 thanks to a patch from Martin Atzmueller.
7076 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
7077 by Tim Moore, ported to SBCL by Martin Atzmueller.
7078 * Martin Atzmueller fixed several filesystem-related problems,
7079 including bug #36, in part by porting CMU CL patches, which were
7080 written in part by Paul Werkowski.
7081 * More compiler warnings in src/runtime/ are gone, thanks to
7082 more patches from Martin Atzmueller.
7083 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
7086 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
7088 * DESCRIBE now works on CONDITION objects.
7089 * The debugger now handles errors which arise when trying to print
7090 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
7092 * The build system now uses an additional file, customize-target-features.lisp,
7093 to allow local modifications to the target *FEATURES* list. (The point of
7094 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
7095 debugging features enabled, without having to worry about propagating it
7096 into everyone's system when I do a "cvs update".) When no
7097 customize-target-features.lisp file exists, the target *FEATURES* list
7098 should be constructed the same way as before.
7099 * fixed bugs in DEFCONSTANT ANSI-compatibility:
7100 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
7101 warn about behavior which is undefined under the ANSI spec. Note: This
7102 is specified by ANSI, but it's not very popular with programmers.
7103 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
7104 macro in the SBCL sources for an example of a workaround which you
7105 might use to make portable ANSI-standard code which does what you want.
7106 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
7107 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
7108 when it's used as a non-toplevel form. (This is required in order
7109 to implement the DEFCONSTANT-EQX macro.)
7110 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
7111 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
7112 funny things, due to bugs in the implementation of EVAL-WHEN
7113 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
7114 non-toplevel DEFCONSTANTs are uncommon.)
7115 * The core file version number and fasl file version number have been
7116 incremented, because the old noncompliant DEFCONSTANT behavior involved
7117 calling functions which no longer exist, and because I also took the
7118 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
7119 * fixed bug 1 (error handling before read-eval-print loop starts), and
7120 redid debugger restarts and related debugger commands somewhat while
7122 ** The QUIT debugger command is gone, since it did something
7123 rather different than the SB-EXT:QUIT command, and since it never
7124 worked properly outside the main toplevel read/eval/print loop.
7125 Invoking the new TOPLEVEL restart provides the same functionality.
7126 ** The GO debugger command is also gone, since you can just invoke
7127 the CONTINUE restart directly instead.
7128 ** The TOP debugger command is also gone, since it's redundant with the
7129 FRAME 0 command, and since it interfered with abbreviations for the
7131 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
7133 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
7134 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
7135 some porting work by Martin Atzmueller)
7136 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
7137 with a boatload of patches which he ported to SBCL. Now that those
7139 ** The system tries to make sure that its low-priority messages
7140 are prefixed by semicolons, to help people who like to use
7141 syntax highlighting in their ILISP buffer. (This patch
7142 was originally due to Raymond Toy.)
7143 ** The system now optimizes INTEGER-LENGTH better, thanks to more
7144 patches originally written by Raymond Toy.
7145 ** The compiler understands coercion between single-value and
7146 multiple-VALUES type expressions better, getting rid of some very
7147 weird behavior, thanks to patches originally by Robert MacLachlan
7148 and Douglas Crosher.
7149 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
7150 lambda lists, thanks to a patch originally by Pierre Mai.
7151 ** The system no longer bogusly warns about "abbreviated type
7153 ** The compiler gets less confused by inlining and RETURN-FROM,
7154 thanks to some patches originally by Tim Moore.
7155 ** The system no longer hangs when dumping circular lists to fasl
7156 files, thanks to a patch originally from Douglas Crosher.
7157 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
7158 undefined function error.
7159 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
7160 in structure slot initforms) for now, documented workaround instead:-|
7161 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
7162 * fixed bug 5: added stubs for various Gray stream functions called
7163 in the not-a-CL:STREAM case, so that even when Gray streams aren't
7164 installed, at least appropriate type errors are generated
7165 * fixed bug 8: better reporting of various PROGRAM-ERRORs
7166 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
7167 consistently in DEFMETHOD forms.
7168 * removed bug 21 from BUGS, since Martin Atzmueller points out that
7169 it doesn't seem to affect SBCL after all
7170 * The C runtime system now builds with better optimization and many
7171 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
7173 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
7175 * The system is now under CVS at SourceForge (instead of the
7176 CVS repository on my home machine).
7177 * The new signal handling code has been tweaked to treat register
7178 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
7179 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
7180 downstream, e.g. in debug-int.lisp, has implicit dependencies
7181 on the unsignedness of integer representation of machine words,
7182 and that caused the system to bomb out with infinite regress
7183 when trying to recover from type errors involving signed values,
7184 e.g. (BUTLAST '(1 2 3) -1).)
7185 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
7186 (This was one of the bugs Peter Van Eynde reported back in July.)
7187 * The system now uses code inspired by Colin Walters' O(N)
7188 implementation of MAP (from the cmucl-imp@cons.org mailing
7189 list, 2 September 2000) when it can't use a DEFTRANSFORM to
7190 inline the MAP operation, and there is more than one
7191 sequence argument to the MAP call (so that it can't just
7192 do ETYPECASE once and for all based on the type of the
7193 single sequence argument). (The old non-inline implementation
7194 of the general M-argument sequence-of-length-N case required
7195 O(M*N*N) time when any of the sequence arguments were LISTs.)
7196 * The QUIT :UNIX-CODE keyword argument has been renamed to
7197 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
7198 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
7200 * Raymond Wiker's patches to port dynamic loading from Linux to
7201 FreeBSD have been added.
7202 * The BUGS file is now more nearly up to date, thanks in large part
7203 to Martin Atzmueller's review of it.
7204 * The debugger now flushes standard output streams before it begins
7205 its output ("debugger invoked" and so forth).
7206 * The core version number and fasl file version number have both
7207 been incremented, because of incompatible changes in the layout
7209 * FINISH-OUTPUT is now called more consistently on QUIT. (It
7210 used to not be called for a saved Lisp image.)
7211 * Martin Atzmueller's version of a patch to fix a compiler crash,
7212 as posted on sbcl-devel 13 September 2000, has been installed.
7213 * Instead of installing Martin Atzmueller's patch for the
7214 compiler transform for SUBSEQ, I deleted the compiler transform,
7215 and transforms for some similar consing operations.
7216 * A bug in signal handling which kept TRACE from working on OpenBSD
7218 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
7219 away by constant folding
7220 * The system now defines its address space constants in one place
7221 (in the Lisp sources), and propagates them automatically elsewhere
7222 (through GENESIS and the sbcl.h file). Therefore, patching the
7223 address map is less unnecessarily tedious and error-prone. The
7224 Lisp names of address space constants have also been systematized.
7225 * CVS tags like dollar-Header-dollar have been removed from
7226 the sources, because they have never saved me trouble and
7227 they've been source of trouble working with patches and other
7228 diff-related operations.
7229 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
7230 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
7232 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
7234 * The system has been ported to OpenBSD.
7235 * The system now compiles with a simple "sh make.sh" on the systems
7236 that it's supported on. I.e., now you no longer need to tweak
7237 text in the target-features.lisp-expr and symlinks in src/runtime/
7238 by hand, the make.sh takes care of it for you.
7239 * The system is no longer so grossly inefficient when compiling code
7240 involving vectors implemented as general (not simple) vectors (VECTOR T),
7241 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
7242 which dares to use the various sequence functions on non-simple
7243 vectors, takes less of a performance hit.
7244 * There is now a primitive type predicate VECTOR-T-P
7245 to test for the (VECTOR T) type, so that e.g.
7246 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
7247 can now be compiled with some semblance of efficiency. (The old code
7248 turned the type declaration into a full call to %TYPEP at runtime!)
7249 * AREF on (VECTOR T) is still not fast, since it's still compiled
7250 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
7251 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
7252 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
7253 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
7254 without making full calls to SUBTYPEP at runtime.
7255 (Some analogous efficiency issues for non-simple vectors specialized to
7256 element types other than T, or for non-simple multidimensional arrays,
7257 have not been addressed. They could almost certainly be handled the
7258 same way if anyone is motivated to do so.)
7259 * The changes in array handling break binary compatibility, so
7260 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
7261 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
7262 instead of (VALUES T T).
7263 * By following the instructions that Dan Barlow posted to sbcl-devel
7264 on 2 July 2000, I was able to enable primitive dynamic object
7265 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
7266 functionality is not implemented (since it calls ld to resolve
7267 library references automatically, requiring RUN-PROGRAM for its
7268 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
7269 try to resolve library references) is now supported.
7270 * The system now flushes the standard output streams when it terminates,
7271 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
7272 them at several other probably-convenient times, e.g. in each pass of
7273 the toplevel read-eval-print loop, and after evaluating a form given
7274 as an "--eval" command-line option. (These changes were motivated by a
7275 discussion of stream flushing issues on cmucl-imp in August 2000.)
7276 * The source transform for TYPEP of array types no longer assumes
7277 that an array whose element type is a not-yet-defined type
7278 is implemented as an array of T, but instead punts, so that the
7279 type will be interpreted at runtime.
7280 * There is now some support for cross-compiling in make.sh: each of
7281 the phases of make.sh has its own script. (This should be transparent
7282 to people doing ordinary, non-cross-compile builds.)
7283 * Since my laptop doesn't have hundreds of megabytes of memory like
7284 my desktop machine, I became more motivated to do some items on
7285 my to-do list in order to reduce the size of the system a little:
7286 ** Arrange for various needed-only-at-cold-init things to be
7287 uninterned after cold init. To support this, those things have
7288 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
7289 symbols with such names are now uninterned after cold init).
7290 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
7291 fasl files for cold load.
7292 ** Remove the old compiler structure pooling code (which used to
7293 be conditional on the target feature :SB-ALLOC) completely.
7294 ** Redo the representation of some data in cold init to be more compact.
7295 (I also looked into supporting byte compiled code at bootstrap time,
7296 which would probably reduce the size of the system a lot, but that
7297 looked too complicated, so I punted for now.)
7298 * The maximum signal nesting depth in the src/runtime/ support code has
7299 been reduced from 4096 to 256. (I don't know any reason for the very
7300 large old value. If the new smaller value turns out to break something,
7301 I'll probably just bump it back up.)
7302 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
7304 * Many, many bugs reported by Peter Van Eynde have been added to
7305 the BUGS list; some have even been fixed.
7306 * While enabling dynamic object file loading, I tried to make the
7307 code easier to understand, renaming various functions and variables
7308 with less ambiguous names, and changing some function calling
7309 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
7310 * While trying to figure out how to do the OpenBSD port, I tried to
7311 clean up some of the code in src/runtime/. In particular, I dropped
7312 support for non-POSIX signal handling, added various comments,
7313 tweaked the code to reduce the number of compilation warnings, and
7314 renamed some files to increase consistency.
7315 * To support the new automatic configuration functionality in make.sh,
7316 the source file target-features.lisp-expr has been replaced with the
7317 source file base-target-features.lisp-expr and the machine-generated
7318 file local-target-features.lisp-expr.
7319 * fixed a stupid quoting error in make.sh so that using CMU CL
7320 "lisp -batch" as cross-compilation host works again
7322 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
7324 * DESCRIBE no longer tries to call itself recursively to describe
7325 bound/fbound values, so that it no longer fails on symbols which are
7326 bound to themselves (like keywords, T, and NIL).
7327 * DESCRIBE now works on generic functions.
7328 * The printer now prints less-screwed-up representations of closures
7329 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
7330 * A private symbol is used instead of the :EMPTY keyword previously
7331 used to mark empty slots in hash tables. Thus
7332 (DEFVAR *HT* (MAKE-HASH-TABLE))
7333 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
7334 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
7335 now does what ANSI says that it should. (You can still get
7336 similar noncompliant behavior if bang on the hash table
7337 implementation with all the symbols you get back from
7338 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
7339 This breaks binary compatibility, since tests for equality to
7340 :EMPTY are wired into things like the macroexpansion of
7341 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
7343 * There's now a minimal placeholder implementation for CL:STEP,
7344 as required by ANSI.
7345 * An obscure bug in the interaction of the normal compiler, the byte
7346 compiler, inlining, and structure predicates has been patched
7347 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
7348 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
7350 * Missing ordinary arguments in a macro call are now detected even
7351 when the macro lambda list contains &KEY or &REST.
7352 * The debugger no longer complains about encountering the top of the
7353 stack when you type "FRAME 0" to explicitly instruct it to go to
7354 the top of the stack. And it now prints the frame you request even
7355 if it's the current frame (instead of saying "You are here.").
7356 * As specified by ANSI, the system now always prints keywords
7357 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
7359 * The default initial SIZE of HASH-TABLEs is now smaller.
7360 * Type information from CLOS class dispatch is now propagated
7361 into DEFMETHOD bodies, so that e.g.
7362 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7364 is now basically equivalent to
7365 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7366 (DECLARE (TYPE SINGLE-FLOAT X))
7368 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
7369 operation, without having to do run-time type dispatch.
7370 * The macroexpansion of DEFMETHOD has been tweaked so that it has
7371 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
7372 * Since I don't seem to be making big file reorganizations very often
7373 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
7374 is overflowing my ability to conveniently back them up), I've finally
7375 checked the system into CVS. (The CVS repository is on my home system,
7376 not at SourceForge -- putting it on SourceForge might come later.)
7377 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
7378 high-level GC-NOTIFY-FOO functions send their output. (There's
7379 still very little control of where low-level verbose GC functions
7380 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
7381 less than it used to -- the GC-NOTIFY-FOO functions are now under
7382 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
7383 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
7384 in only one place in the source code, and propagates it automatically
7385 everywhere that it's needed. Thus e.g. when I bump the version from
7386 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
7387 * The C source files now include boilerplate legalese and documentation
7388 at the head of each file (just as the Lisp source files already did).
7389 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
7390 to his page will be replaced with a link to his new CLiki service.
7392 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
7394 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
7395 * The build process now looks for GNU make under the default name "gmake",
7396 instead of "make" as it used to. If GNU make is not available as "gmake"
7397 on your system, you can change this default behavior by setting the
7398 GNUMAKE environment variable.
7399 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
7400 can build without error under CMU CL.
7402 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
7404 * There is now a partial SBCL user manual (with some new text and some
7405 text cribbed from the CMU CL manual).
7406 * The beginnings of a profiler have been added (starting with the
7407 CMU CL profiler and simplifying and cleaning up). Eventually the
7408 main interface should be through the TRACE macro, but for now,
7409 it's still accessed through vaguely CMU-CL-style functions and macros
7410 exported from the package SB-PROFILE.
7411 * Some problems left over from porting CMU CL to the new
7412 cross-compilation bootstrap process have been cleaned up:
7413 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
7414 instead of SB!XC:DEFMACRO, compounded by an oversight on my
7415 part when getting rid of the compiler *BACKEND* stuff.)
7416 ** The value of *NULL-TYPE* was screwed up, because it was
7417 being initialized before the type system knew the final
7418 definition of the 'NULL type. This screwed up several key
7419 optimizations in the compiler, causing inefficiency in all sorts
7420 of places. (I found it because I wanted to understand why
7421 GET-INTERNAL-RUN-TIME was consing.)
7422 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
7423 PROCLAIM FTYPE information. Unfortunately this broke binary
7424 compatibility again, since now the forms output by DEFGENERIC
7425 to refer to functions which didn't exist in 0.6.3.
7426 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
7427 can use the new (as of 0.6.3) transform for SOME into MAP into
7429 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
7430 values to (INTEGER 0 1000000), so that the time code will no longer
7431 occasionally get blown up by Linux returning 1000000 microseconds
7432 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
7433 its output conform to the ANSI spec. (Alas, this makes its output
7434 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
7435 * A full call to MAP NIL with a single sequence argument no longer conses.
7436 * fixes to problems pointed out by Martin Atzmueller:
7437 * The manual page no longer talks about multiprocessing as though
7438 it were currently supported.
7439 * The ILISP support patches have been removed from the distribution,
7440 because as of version 5.10.1, ILISP now supports SBCL without us
7441 having to maintain patches.
7442 * added a modified version of Raymond Toy's recent CMU CL patch for
7443 EQUALP comparison of HASH-TABLE
7445 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
7447 * The system still can't cross-compile itself with
7448 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
7449 entails), but at least it can compile more of itself that way
7450 than it used to be able to, and various buglets which were uncovered
7451 by trying to cross-compile itself that way have now been fixed.
7452 * This release breaks binary compatibility again. This time
7453 at least I've incremented the FASL file format version to 2, so that the
7454 problem can be detected reliably instead of just causing weird errors.
7455 * various new style warnings:
7456 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
7457 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
7458 ** using the lexical binding of a variable named in the *FOO* style
7459 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
7460 as specified by ANSI.
7461 * *RANDOM-STATE* is no longer automatically initialized from
7462 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
7463 default behavior of the system is to repeat its behavior every time
7464 it's run. If you'd like to change this behavior, you can always
7465 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
7466 old convention there was no comparably easy way to get the system to
7467 repeat its behavior every time it was run.
7468 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
7469 FTYPE declarations has been removed, in favor of their ANSI
7470 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
7471 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
7472 the types of their sequence arguments can be determined at compile time.
7473 This is done through a new open code expansion for MAP which eliminates
7474 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
7475 argument types can be determined at compile time.
7476 * The optimizer now transforms COERCE into an identity operation when it
7477 can prove that the coerced object is already of the correct type. (This
7478 can be a win for machine generated code, including the output of other
7479 optimization transforms, such as the MAP transform above.)
7480 * Credit information has been moved from source file headers into CREDITS.
7481 * Source file headers have been made more standard.
7482 * The CASE macro now compiles without complaining even when it has
7485 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
7487 * (Note that the way that the PCL macroexpansions were rewritten
7488 to accommodate the change in DEFGENERIC below breaks binary
7489 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
7490 not run under sbcl-0.6.2. Once we get out of alpha releases,
7491 i.e. hit release 1.0.0, we'll probably try to maintain binary
7492 compatibility between maintenance releases, e.g. between sbcl-1.4.3
7493 and sbcl-1.4.4. Until then, however, it might be fairly common
7494 for maintenance releases to break binary compatibility.)
7495 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
7497 * The reporting of unhandled signals has been changed to print some
7498 explanatory text as well as the report form. (Previously only
7499 the report form was printed.)
7500 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
7501 it defines, so that the compiler no longer issues undefined function
7502 warnings for compiled-but-not-yet-loaded generic functions.
7503 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
7504 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
7505 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
7506 section of the ANSI spec are supported.
7507 * The "" nickname for the "KEYWORD" package has been removed.
7508 The reader still handles symbol tokens which begin with a package marker
7509 as keywords, but it doesn't expose its mechanism for doing so in the
7510 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
7511 * The system now issues STYLE-WARNINGs for contradictory TYPE
7512 proclamations. (Warnings for contradictory FTYPE proclamations would
7513 be nice too, but those can't be done usefully unless the type system
7514 is made smarter about FUNCTION types.)
7515 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
7516 systematized, so that "*target-*.lisp is supposed to exist only on the
7517 target and imply that there's a related file which exists on the
7518 host, and *host-*.lisp is supposed to exist only on the host and imply
7519 that there's a related file which exists on the target. This involves a
7520 lot of renaming. Hopefully the acute confusion caused by the renaming
7521 will be justified by the reduction in chronic confusion..
7522 ** runtime-type.lisp -> early-target-type.lisp
7523 ** target-type.lisp -> late-target-type.lisp
7524 ** early-host-format.lisp -> early-format.lisp
7525 ** late-host-format.lisp -> late-format.lisp
7526 ** host-error.lisp -> misc-error.lisp
7527 ** early-error.lisp -> early-target-error.lisp
7528 ** late-error.lisp -> late-target-error.lisp
7529 ** host-defboot.lisp -> early-defboot.lisp
7530 ** code/misc.lisp -> code/target-misc.lisp
7531 ** code/host-misc.lisp -> code/misc.lisp
7532 ** code/numbers.lisp -> code/target-numbers.lisp
7533 ** code/early-numbers.lisp -> numbers.lisp
7534 ** early-host-type.lisp -> early-type.lisp
7535 ** late-host-type.lisp -> late-type.lisp
7536 ** host-typep.lisp -> typep.lisp
7537 ** load.lisp -> target-load.lisp
7538 ** host-load.lisp -> load.lisp
7539 ** host-disassem.lisp -> disassem.lisp
7540 ** host-insts.lisp -> insts.lisp
7541 ** byte-comp.lisp -> target-byte-comp.lisp
7542 ** host-byte-comp.lisp -> byte-comp.lisp
7543 ** host-signal.lisp -> signal.lisp
7544 ** host-defstruct.lisp -> defstruct.lisp
7545 ** late-target-type.lisp -> deftypes-for-target.lisp
7546 Furthermore, several other previously target-only files foo.lisp (e.g.
7547 hash-table.lisp and random.lisp) have been split into a target-and-host
7548 foo.lisp file and a target-only target-foo.lisp file, with their key type
7549 definitions in the target-and-host part, so that the cross-compiler will
7550 know more about target types.
7551 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
7552 gone away. In their place are various *BACKEND-FOO* variables
7553 corresponding to the slots of the old structure.
7554 * A bug which caused the SB-COLD bootstrap-time package to be propagated
7555 into the target SBCL has been fixed.
7556 * The chill.lisp system for loading cold code into a running SBCL
7558 * Support for the CMU CL "scavenger hook" extension has been removed.
7559 (It was undocumented and unused in the CMU CL sources that SBCL was
7560 derived from, and stale in sbcl-0.6.1.)
7561 * Various errors in the cross-compiler type system were detected
7562 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
7563 (enabling various consistency checks). Many of them were fixed,
7564 but some hard problems remain, so the compiler is back to
7565 running without *TYPE-SYSTEM-INITIALIZED* for now.
7566 * As part of the cross-compiler type system cleanup, I implemented
7567 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
7568 * I have started adding UNCROSS calls throughout the type system
7569 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
7570 on cross-compiler input files will be able to go away, and various
7572 * CONSTANTP now returns true for quoted forms (as explicitly required
7575 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
7577 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
7578 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
7579 (MAKE-LIST -1). In the longer term, it ought to become true
7580 that declarations are assertions even at SAFETY 1. For now, it's not
7581 quite true even at SAFETY 3, but it's at least more nearly true..
7582 (Note that this change seems to increases the size of the system by
7583 O(5%) and to decrease the speed of the compiler by 20% or more.)
7584 * changed ALIEN printing to be much more abbreviated, as a short-term fix
7585 for the problem of printing dozens of lines of distracting information
7586 about low-level system machinery as part of the top stack frame
7587 on entry to the debugger when an undefined function was called.
7588 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
7589 is not reset to COMMON-LISP-USER.
7590 * Compilation of stuff related to dyncount.lisp has been made conditional
7591 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
7592 smaller. The various dyncount-related symbols have been moved into
7593 a new "SB-DYNCOUNT" package.
7594 * tty-inspect.lisp has been renamed to inspect.lisp.
7595 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
7596 feature has gone away. (When we eventually port to other flavors of
7597 libc and/or Unix, we'll try to make the differences between flavors
7598 invisible at the user level.)
7599 * Various other *FEATURES* tags, and/or their associated conditionals,
7600 have been removed if obsolescent, or given better documentation, or
7601 sometimes given more-mnemonic names.
7603 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
7605 * tidied up "make.sh" script
7606 * tidied up system directory structure
7607 * better "clean.sh" behavior
7608 * added doc/FOR-CMUCL-DEVELOPERS
7609 * many many small tweaks to output format, e.g. removing possibly-confusing
7610 trailing #\. character in DESCRIBE-INSTANCE
7611 * (EQUALP #\A 'A) no longer signals an error.
7612 * new hashing code, including EQUALP hashing
7613 * tidied up Lisp initialization and toplevel
7614 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
7615 * command line argument processing
7616 * added POSIX-GETENV function to deal with Unix-ish environment variables
7617 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
7618 terminating SBCL on EOF
7619 * non-verbose GC by default
7620 * There is no more "sbcl" shell script; the sbcl file is now the C
7621 runtime executable (just like CMU CL).
7622 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
7624 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
7625 symbol and package information as Lisp native symbol and package objects
7626 instead of strings naming symbols and strings naming packages. This way,
7627 whenever packages are renamed (as in warm init), debug information is
7628 transformed along with everything else.
7629 * tweaked the optimization policy declarations which control the building
7630 of SBCL itself. Now, among other things, the system no longer saves
7631 source location debugging information. (This helps two problems at once
7632 by reducing SBCL size and by keeping SBCL from trying to look for its
7633 sources -- which may not exist -- when reporting errors.)
7634 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
7635 debugging and testing purposes
7636 * cleaned up printing, making the printer call PRINT-OBJECT for
7637 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
7638 methods, giving nearly-ANSI behavior
7639 * converted almost all special variables to use *FOO* naming convention
7640 * deleted PARSE-TIME functionality, since it can be done portably
7641 * moved some files out of cold init into warm init
7642 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
7644 * regularized formatting of source files
7645 * added an install.sh script
7646 * fixed ridiculous memory usage of cross-compiler by making
7647 compiler/alloc.lisp not try to do pooling unless it can hook
7648 itself into the GC of the cross-compilation host. Now the system
7649 builds nicely on my old laptop.
7650 * added :SB-ALLOC in target-features.lisp-expr
7651 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
7652 was not implemented)
7653 * re-did condition handling and note reporting in the compiler. Notes
7654 are no longer handled by signalling conditions. Style warnings
7655 and warnings are handled more correctly and reported in such a way
7656 that it's easy to find one or the other in your output (so that you
7657 can e.g. figure out which of many problems caused COMPILE-FILE to
7659 * changed the severity of several compiler warnings from full WARNING
7660 to STYLE-WARNING in order to conform with the ANSI spec; also changed
7661 compiler note reporting so that it doesn't use the condition system
7662 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
7663 COMPILE-FILE command)
7664 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
7665 function. As a consequence, START-BLOCK and END-BLOCK declarations are
7666 no longer supported, since their implementation was deeply intertwingled
7667 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
7668 * removed bogus "support" for compiler macros named (SETF FOO), and
7669 removed the compiler macro for SETF INFO (but only after making a fool
7670 of myself on the cmucl-imp mailing list by posting a bogus patch for
7671 DEFINE-COMPILER-MACRO..)
7672 * Compiled files containing forms which have side effects on the Lisp
7673 reader (such as DEFPACKAGE forms) are now handled more correctly.
7674 (Compiler queuing of top level lambdas has been suppressed by setting
7675 *TOP-LEVEL-LAMBDA-MAX* to 0. )
7676 * deleted various currently-unused source files, e.g. gengc.lisp. They
7677 may be added back at some point e.g. when porting to other architectures,
7678 but until they are it's distracting to distribute them and to try to
7680 * deleted "UNCROSS couldn't recurse through.." style warnings, since
7681 there were so many of them they're just distractions, and UNCROSS is
7682 known to be able to handle the current sources
7683 * moved PROFILE functionality into TRACE, so that it will be clear
7684 how the wrapping and unwrapping of functions when you profile them
7685 interacts with the wrapping and unwrapping of functions when you
7686 trace them. (Actually, the functionality isn't there yet, but at least
7687 the interface specification is there. Hopefully, the functionality will
7688 arrive with some future maintenance release.)
7689 * removed host-oops.lisp
7690 * changed signature of QUIT function to allow UNIX-CODE argument
7691 * fixed READ-SEQUENCE bug
7692 * tweaked verbose GC output so that it looks more like the progress
7693 output that ANSI specifies for functions like LOAD
7694 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
7695 * added <http://sbcl.sourceforge.com> to the banner information printed by