1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
3 changes relative to sbcl-1.3.7:
4 * enhancement: simple arrays of any rank can be stack-allocated
5 on platforms supporting stack allocation of vectors.
6 * optimization: improved type derivation for FIND, POSITION, COUNT, SEARCH,
7 MISMATCH and other array and sequence functions.
9 changes in sbcl-1.3.7 relative to sbcl-1.3.6:
10 * bug fix: preserve the name of the destructive function for the destroyed
11 constant and important result warnings, even when declared NOTINLINE.
12 * optimization: faster operations on list-sets.
13 * optimization: better type derivation of set functions.
15 * optimization: load-time TLS-INDEX assignment, and other
16 microoptimizations, on x86.
22 ** REMOVE, REMOVE-DUPLICATES, DELETE and DELETE-DUPLICATES on lists.
24 changes in sbcl-1.3.6 relative to sbcl-1.3.5:
25 * bug fix: do not insert conditional newlines in print-unreadable-object
26 (lp#1398290). This reverses a change made in lp#488979 which reversed
27 a fix advertised in release 0.8.14 to pass the GCL ANSI Test Suite.
28 * bug fix: constant negative rotations of 32-bit quantities are compiled
29 correctly on x86-64 and arm. (lp#1586614, reported by Guillaume Le
32 changes in sbcl-1.3.5 relative to sbcl-1.3.4:
33 * enhancement: the platform's strtod() is exposed as SB-POSIX:STRTOD
34 * enhancement: speed up debug info creation for highly nested functions.
36 * enhancement: the interleaved structure slot optimization from
37 release 1.2.6 has been ported to all architectures.
38 * enhancement: support run-program I/O redirection into lisp streams on
40 * bug fix: better wording in missed optimization note. (lp#1003265)
41 * bug fix: interpreted (CAS SVREF) was broken
42 * bug fix: support CLISP as build host for ARM (lp#1568256, thanks to Tomas
45 changes in sbcl-1.3.4 relative to sbcl-1.3.3:
46 * enhancement: who-sets and who-references work on DEFGLOBAL. (lp#1552997)
47 * enhancement: CONSTANTP understands backquote.
48 e.g. (CONSTANTP '`(0 (,CHAR-CODE-LIMIT))) => T
49 * optimization: improvements to sequence functions: CONCATENATE, SUBSTITUTE,
51 * bug fix: SB-EVAL does not signal an error for (THE KEYWORD :FOO)
52 * bug fix: a DEFTYPE name that is redefined into a DEFSTRUCT name
53 is less likely to cause confusion in the compiler.
54 * bug fix: DOCUMENTATION works as intended for classes with non-standard
56 * bug fix: (TYPEP <extended-sequence> <extended-sequence-class>) no longer
57 returns NIL in certain situations
58 * bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE accept class objects as
60 * bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE expand DEFTYPEs in
63 changes in sbcl-1.3.3 relative to sbcl-1.3.2:
64 * enhancement: warn about argument mismatch for functions passed as
65 arguments to other functions (e.g. REDUCE, MAP) at compile-time.
66 * optimization: functions accepting other functions (e.g. REDUCE, FIND) can
67 now be constant-folded if all function arguments are declared as foldable.
68 * optimization: improved logical operations on integers of unknown type.
69 * bug fix: exception handling no longer leaks memory on OS X. (lp#326238)
71 changes in sbcl-1.3.2 relative to sbcl-1.3.1:
72 * enhancement: {READ,WRITE}-SEQUENCE are much faster for some combinations
73 of short sequences and stream types
74 * enhancement: MAKE-LIST's result can be stack-allocated on x86-64
75 * bug fix: WRITE-SEQUENCE no longer fails to write lists containing integers
77 * bug fix: LOGTEST (and hence ODDP) no longer conses when given fixnum
78 arguments and small bit positions. (lp#1277690)
79 * bug fix: READ-FROM-STRING compiler-macro does not permute its arguments
80 * bug fix: DEFUN of a function name that collides with a system-generated
81 structure accessor does not confuse the runtime. (lp#540063)
82 * bug fix: heap corruption from miscompiled RESTART-BIND. (lp#1530390)
84 changes in sbcl-1.3.1 relative to sbcl-1.3.0:
85 * enhancement: SB-THREAD support for ARM64.
86 * enhancement: compiling an out-of-line DEFSTRUCT constructor call
87 will warn if a defaulted value is incompatible with its slot type.
88 * enhancement: a local INLINE declaration on a structure constructor
89 will work as intended, subject to any other factors that inhibit
90 inlining, even if the DEFSTRUCT was not itself within a global
91 INLINE proclamation for the named constructor
92 * enhancement: SB-EXT:DYNAMIC-SPACE-SIZE is now defined for cheneygc.
93 * enhancement: x86[-64] platforms support SB-EXT:CAS on structure slots
95 * enhancement: the interleaved structure slot optimization from
96 release 1.2.6 has been ported to 32-bit x86, Sparc, PowerPC, ARM64.
97 * enhancement: SB-THREAD:JOIN-THREAD signals a proper error when an attempt
98 is made to join the current thread
99 * bug fix: NTH-VALUE does not cause stack overflow. (lp#1511419)
100 * bug fix: structure constructor type checking is better. (lp#1508735)
101 * bug fix: supplied-p variables for unused optional or keyword variables no
102 longer confuse SB-DI:PARSE-COMPILED-DEBUG-FUN-LAMBDA-LIST (and thus the
103 backtrace machinery) (lp#1498644)
104 * bug fix: Backtrace correctly handles undefined-function frames on MIPS.
105 * bug fix: WITH-FLOAT-TRAPS-MASKED correctly clears accrued traps on MIPS
106 (fixes issues with floating-point type derivation in the compiler).
107 * bug fix: FLOAT-NAN-P and FLOAT-TRAPPING-NAN-P now work correctly on MIPS
109 * bug fix: MIPS context register access now masks to 32 bits (fixing issues
110 parsing negative-fixnum values for internal-error arguments and escaped
111 debug variables on 64-bit CPUs).
112 * bug fix: (SETF SAP-REF-DOUBLE) with constant offset on big-endian MIPS
114 * bug fix: Callback parameter (argument) handling on MIPS is now vastly
116 * bug fix: %DECREMENT-SEMAPHORE adjusts the remaining timeout after a
119 changes in sbcl-1.3.0 relative to sbcl-1.2.16:
120 * minor incompatible change: the environment passed to a macro/setf/deftype
121 expander is not always an object of type SB-KERNEL:LEXENV.
122 It can be nil, as is permissible by the standard.
123 * enhancement: ported to ARM64 Linux.
124 * enhancement: a new interpreter is included which has many benefits
125 over sb-eval. It is disabled by default. See src/interpreter/README
126 for instructions to enable it, and further details.
127 * bug fix: calling COMPILE when SB-EXT:*EVALUATOR-MODE* was :INTERPRET
128 would fail to perform "normal semantic processing such as macro expansion"
129 as stipulated by X3J13 issue LOAD-TIME-EVAL.
130 * bug fix: SB-UNICODE:CONFUSABLE-P no longer treats "<" and the empty
131 string as confusable. (lp#1504739)
132 * bug fix: (ASSERT (COMPUTE-IT ...)) would expand incorrectly
133 if COMPUTE-IT was a local macro that shadowed a global function.
134 * bug fix: SB-POSIX:CFSETISPEED and SB-POSIX:CFSETOSPEED now work properly
135 on platforms that use only the minimum specified set of fields in struct
136 termios (verified on Linux, still known not to work on FreeBSD and NetBSD,
137 very probably others). (partial fix for lp#1500951)
139 changes in sbcl-1.2.16 relative to sbcl-1.2.15:
140 * enhancement: by default, timers with a repeat interval do not "catch up"
141 by repeatedly calling their function after a clock discontinuity such as a
142 suspend and resume cycle
143 * bug fix: correctly restore multiple values on the stack in the presence of
144 alien calls. (lp#1489590)
145 * bug fix: MAKE-STRING-OUTPUT-STREAM enforces that :ELEMENT-TYPE
146 is a subtype of CHARACTER.
147 * bug fix: an EQL method specializer no longer causes garbage retention
148 if there are no extant methods using the specializer. (lp#492851)
150 changes in sbcl-1.2.15 relative to sbcl-1.2.14:
151 * new feature: DEPRECATION declaration for functions, variables and types
152 causes {EARLY,LATE,FINAL}-DEPRECATION-WARNING to be signaled when subject
153 of the declaration is used. Integrated with DESCRIBE, DOCUMENTATION and
154 SB-CLTL2:{VARIABLE,FUNCTION}-INFORMATION. Documented in the "Deprecation"
155 section of the manual.
156 * enhancement: ASDF updated to 3.1.5. (lp#1476867)
157 * enhancement: definitions within PROGN get proper source locations when
158 compiled (needs latest Slime to take advantage of this). (lp#1473147)
159 * enhancement: source locations for DEFCLASS slots now point directly to the
160 slot definitions, not the whole DEFCLASS form.
161 * bug fix: better source location in the presence of quoted forms.
163 * bug fix: better source locations inside backqoute. (lp#1361502)
164 * bug fix: HANDLER-BIND requires that the handler-function be
165 a function designator at the time of binding establishment. (lp#1480679)
166 * bug fix: inlined functions surrounded by nested macrolets are properly
169 changes in sbcl-1.2.14 relative to sbcl-1.2.13:
170 * minor incompatible change: The name of a compiled anonymous lambda
171 as returned by the third value of FUNCTION-LAMBDA-EXPRESSION can have
172 a lambda-list-like list following the introductory LAMBDA that is not
173 in general a syntactically valid lambda list. Specifically, it won't
174 retain default values, supplied-p variables, or &KEY or &AUX bindings.
175 * enhancement: DESTRUCTURING-BIND has been totally reimplemented from
176 scratch to address a handful of performance and correctness issues.
177 Some minor behavioral differences exist regarding order of evaluation
178 of default forms for unsupplied &OPTIONAL and &KEY arguments
179 when nested destructuring patterns are involved.
180 (lp#707556, lp#707573, lp#707578, lp#708051)
181 * enhancement: DEFCONSTANT and DEFSTRUCT respect package locks. (lp#1186238,
183 * enhancement: sb-unicode:normalize-string has a new optional argument,
184 FILTER, a callback which controls which decomposed characters are
185 collected. Useful for stripping away diacritics more efficiently.
186 * bug fix: (TYPE-OF ARRAY) for a non-simple array is subject to change
187 after a call of ADJUST-ARRAY. (lp#1333731)
188 * bug fix: Dynamic-extent allocation with a loop between allocating a value
189 and the start of its environment no longer discards the allocated data
190 when the loop is taken. (lp#1472785)
191 * bug fix: Variable-reference elimination no longer generates incorrect code
192 under certain circumstances. (lp#1446891)
193 * bug fix: variables with EQL types are no longer treated as constants by
194 VOPs, which caused problems with closures being allocated for such
195 variables, but they remained unused. (lp#1390149)
196 * bug fix: Windows installer generates registry key name
197 correctly. (lp#1476447)
199 changes in sbcl-1.2.13 relative to sbcl-1.2.12:
200 * incompatible change: on success, TRY-SEMAPHORE and WAIT-ON-SEMAPHORE
202 * enhancement: WAIT-ON-SEMAPHORE accepts a decrement parameter
203 * enhancement: JOIN-THREAD allows distinguishing timeout vs. abort in all
205 * enhancement: On Windows DBG_PRINTEXCEPTION_C is handled and its message is
206 printed. (lp#1437947)
207 * bug-fix: TRUENAME works properly on broken symlinks presented as
208 directories. (lp#1400003)
209 * bug fix: Inlined DPB and DEPOSIT-FIELD don't interfere with left-to-right
210 order of argument evaluation. (lp#1458190)
211 * bug fix: (SETF (LDB (BYTE 1 2 JUNK) X) 0) is rightly rejected.
212 * bug fix: DEFSETF lambda lists should not permit argument destructuring.
213 * bug fix: calls to (SETF SLOT-VALUE) on a missing slot would in certain
214 situations incorrectly return the result of a SLOT-MISSING method
215 instead of always returning the new value. (lp#1460381)
216 * bug fix: a DEFMACRO occurring not at toplevel and capturing parts of
217 its lexical environment (thus being a closure) caused expressions
218 involving the macro name to cause corruption in the pretty-printer
219 due to faulty introspection of the lambda list of a closure.
220 * bug fix: out of line MAP/MAP-INTO check that the results produced by the
221 function are of the matching sequence type. (lp#1459581)
222 * bug fix: pretty-printing of '(LET `((,X ,Y)) :B) is handled correctly.
224 changes in sbcl-1.2.12 relative to sbcl-1.2.11:
225 * minor incompatible change: the SB-C::*POLICY* variable is no longer
226 a list. Code which manipulated it as such (including but not limited
227 to non-bundled releases of ASDF) will need to be revised.
228 * enhancement: The input stream for COMPILE-FILE implements
230 * enhancement: EVAL errors that occur by way of LOAD report the starting
231 line and column number of the erring toplevel form. (lp#565247)
232 * optimization: better MAP and MAP-INTO on known vector result types.
233 * bug fix: Read/modify/write macros accessing a place which is a
234 composition of CAR+CDR operations, such as (SHIFTF (CADR X) (ELT V 0)),
235 do not access subforms more than once. (lp#1450968)
236 * bug fix: short form of DEFSETF no longer allows trailing junk.
237 * bug fix: DEFINE-MODIFY-MACRO respects the provisions of CLHS 5.1.3
238 regarding argument evaluation order. (lp#1452539)
239 * bug fix: POP works as specified in CLHS if the setter for its
240 argument has a side-effect on the existing CAR value. (lp#1454021)
241 * bug fix: Reading "#()" with a positive numeric argument signals a
242 reader error. As specified, reading "#1()" has undefined consequences,
243 so correct portable code should be indifferent to this. (lp#1252100)
244 * bug fix: Malformed reader conditionals such as "(#-no-such-feature)"
245 and "(#+sbcl)" no longer parse as NIL. (lp#1454400)
247 changes in sbcl-1.2.11 relative to sbcl-1.2.10:
248 * enhancement: SET-PPRINT-DISPATCH will warn when given an expression in
249 which any part is unrecognizable as a legal type-specifier.
250 The dispatch table will be altered, but the new entry is disabled.
251 Subsequent type-defining forms will cause pprint-dispatch tables to
252 re-examine whether any disabled entries should be enabled. (lp#1429520)
253 * enhancement: Loading code containing calls to a deprecated function will,
254 under most circumstances, signal warnings similar to compiling such code.
255 The usual caveat holds about not detecting calls through a computed name,
256 as in (funcall (intern "DEPRECATED-FUN" "SB-EXT")).
257 * enhancement: (SB-EXT:COMPILE-FILE-LINE) is a new macro that expands
258 to a constant (VALUES integer integer) indicating the source line/column
259 from which it was read, intended for logging Lisp runtime errors in
260 a style similar to that afforded by the C preprocessor __LINE__ macro.
261 Similarly (SB-EXT:COMPILE-FILE-POSITION) returns a position in characters.
262 * enhancement: improved source locations for VOPs, alien types and
264 * bug fix: functions in :FINAL deprecation have the correct docstring.
265 No visible change, as no such functions presently exist. (lp#1439151)
266 * bug fix: (SETF (FDEFINITION this) (FDEFINITION OTHER)) signals an error
267 if OTHER names either a macro or special-operator. (lp#1439921)
269 changes in sbcl-1.2.10 relative to sbcl-1.2.9:
270 * minor incompatible change: all SOCKINT::WIN32-* functions have been
271 deprecated with EARLY deprecation state
272 * minor incompatible change: performing introspection via the system-internal
273 SB-INT:INFO function could expose that :TYPE :TRANSLATOR is not necessarily
274 a function, as it always was before. (Affects swank-fancy-inspector)
275 * enhancement: The value of SXHASH on bit-vectors of length equal to the
276 word size now depends on the vector's contents instead of being constant;
277 its value on bit-vectors of length divisible by the word size now depends
278 also on the contents of the vector's last word.
279 * bug-fix: sb-bsd-sockets on win32 uses proper C function declarations.
281 * bug fix: A new dead code elimination phase removes dead code loops
282 that confuse stack analysis. (lp#1255782, lp#308914)
283 * bug fix: A toplevel form which was simple enough to bypass the main
284 compiler in COMPILE-FILE, and which contained an empty SETQ or PROGN
285 would produce an invalid fasl file. (lp#1427050)
286 * bug fix: The compiler no longer signals an internal error when
287 encountering invalid FUNCTION forms like (function 1)
288 * bug fix: express proper dependencies in the ASDF contrib, to support
289 systems where make runs in parallel. (lp#1434768; thanks to Nikhil
292 changes in sbcl-1.2.9 relative to sbcl-1.2.8:
293 * minor incompatible change and bug fix: unboxed numeric constants
294 on x86oids are arranged in memory differently, and the disassembler
295 does not show them separately in DISASSEMBLE, but does
296 if DISASSEMBLE-CODE-COMPONENT is used. (lp#1421987)
297 * optimization: The compiler's treatment of type specifiers makes
298 it slightly faster and more memory-efficient. Portable code
299 should be indifferent to this change, however, users of
300 SB-INTROSPECT:FUNCTION-TYPE might notice that (MEMBER T NIL)
301 and (MEMBER NIL T) are both internally collapsed to the former,
302 so that the latter can never be obtained as part of an FTYPE.
303 * optimization: a TYPEP call in which the second argument is not a
304 QUOTE form but nevertheless recognized as a compile-time constant
305 might open-code the test. One scenario for this involves backquote,
306 such as (TYPEP x `(my-type ,some-arg)). Code which relied upon
307 deferring until runtime should declare (NOTINLINE TYPEP).
308 [Due to the sematic constraints of DEFTYPE etc in in CLHS 3.2.2.3,
309 code requiring delayed evaluation could be unportable though.]
310 * enhancement: unused variables at the top-level are now reported.
312 * bug fix: DEFCLASS handles cyclic {super,meta}class relations better
314 * bug fix: compiler no longer signals an error when compiling certain
315 function calls. (lp#1416704, lp#404441, lp#1417822, lp#1234919)
316 * bug fix: compiler doesn't stumble on a LOGIOR transform. (lp#1389433)
317 * bug fix: more robust debugger and backtraces. (lp#1413850, lp#1099500,
318 lp#1412881, lp#945261, lp#1419205, lp#1409402)
319 * bug fix: files larger than 4GB can now be compiled.
320 * bug fix: x86 truncated results from 64-bit foreign functions to 32 bits.
321 * bug fix: file-position didn't work on large files on win32. (lp#1271545)
322 * bug fix: callbacks from foreign threads can work without enabling
324 * bug fix: sb-introspect:function-lambda-list works properly on interpeted
326 * bug fix: ADJUST-ARRAY properly handles non-adjustable arrays. (lp#886418)
327 * bug fix: compiler no longer fails to dump a multidimensional array
328 constant involving a circular reference to itself
329 * bug fix: conditional and nested DX allocation no longer confuse the
330 compiler in STACK analysis. (lp#1044465)
331 * bug fix: sb-rotate-byte constant folding bug fixed. (lp#1423682)
333 changes in sbcl-1.2.8 relative to sbcl-1.2.7:
334 * enhancement: better error and warning messages. (lp#1314767, lp#736383)
335 * enhancement: backtrace for invalid argument count produces the exact
336 supplied arguments including the extra ones, on x86, x86-64 and ARM.
337 * enhancement: a STYLE-WARNING is signaled for DEFSTRUCT accessors which
338 are used before the structure is defined; similarly for the predicate.
339 * optimization: FORMAT NIL with only ~a and string arguments is transformed
341 * optimization: POSITION and FIND when inlined into code that is compiled
342 with qualities of safety < 2 and speed > space will no longer signal
343 an error on circular lists, but will potentially loop forever if given
344 no :END constraint. As was always the case, calls that are not inlined
345 are safe regardless of lexical policy.
346 * bug fix: CLOS methods compiled with (OPTIMIZE (DEBUG 0))
347 no longer cause debugger failure when printing a backtrace
348 * bug fix: more resilience to deleted code. (lp#1308328, lp#1390544)
349 * bug fix: the CLHS example of MAKE-LOAD-FORM involving TREE-WITH-PARENT
350 did not work, and now it does.
352 changes in sbcl-1.2.7 relative to sbcl-1.2.6:
353 * optimization: returning constant values refers to preboxed constants
354 more reliably. (lp#1398785)
355 * enhancement: a STYLE-WARNING is produced if a compiler-macro is defined
356 for a function after at least one ordinary (not inlined) call to that
357 function was compiled, indicating a likely compilation order problem.
358 Likewise a warning ensues if a call is compiled to a function
359 that is subsequently proclaimed INLINE.
360 * enhancement: always lose() when something goes wrong while saving a core
361 (instead of just printing an error on stderr in some situations).
362 * enhancement: frames in the debugger are now restartable by default.
363 * bug fix: restore error handling on Windows x86.
364 * bug fix: MAKE-SEQUENCE detects type errors in its :INITIAL-ELEMENT
365 at compile-time when possible. (lp#330299)
366 * bug fix: parsing of malformed type specifiers no longer results
367 in a memory-fault-error.
368 * bug fix: LOOP properly destructures nested lists in WITH.
369 * bug fix: MACROEXPANDing the redefinition of an alien structure type no
370 longer signals the wrong error.
371 * bug fix: PROGV doesn't get confused by forced DEBUG 3 (lp#1405456).
373 changes in sbcl-1.2.6 relative to sbcl-1.2.5:
374 * enhancement: SERVE-EVENTS uses the poll() system call in lieu of
375 select() if the OS has the former. Previously poll() was used
376 only if waiting on exactly one file descriptor.
377 * enhancement: efficiency of access to untagged structure slots is improved
378 on x86-64, and the order of slots in memory is exactly as specified by
379 defstruct, simplifying use of structures as arguments to foreign calls.
380 * bug fix: SB-DEBUG:ARG now works in all TRACE options which evaluate forms.
382 * bug fix: GC memory corruption during internal memory handling.
383 * bug fix: duplicate effective-slot-definition objects as compared
384 by EQ on name could be present in CLASS-SLOTS of a class whose
385 metaclass was structure-class or condition-class. (lp#1049423)
386 * bug fix: HANDLER-BIND with empty bindings works again; regression in
388 * bug fix: ATOMIC-INCF works on structure slots in interpreted code.
390 * bug fix: MAKE-ARRAY properly handles character types like (eql #\a) and
391 (member #\a #\c). (lp#1392068)
392 * bug fix: READ sometimes accidentally preserved a whitespace character
393 after a token when it should not have. (lp#327790)
395 changes in sbcl-1.2.5 relative to sbcl-1.2.4:
396 * enhancement: sb-bsd-sockets now has basic support for IPv6
397 * enhancement: An sb-unicode package has been added, containing
398 many functions related to handling Unicode text
399 * enhancement: The reader now normalizes symbols to Normalization
400 Form KC (NFKC). This behavior can be disabled with
401 SB-EXT:READTABLE-NORMALIZATION
402 * enhancement: a style-warning is signaled if OPTIMIZE declarations
403 multiply specify a quality with differing values. (lp#310267)
404 * bug fix: conservatively pointed to pages wipe out unused dwords so
405 that they cannot act as false roots in turn.
406 * bug fix: the walker's handling of lexical variable and symbol-macro
407 bindings is improved (lp#375326, lp#1368305)
408 * bug fix: HANDLER-{BIND,CASE} no longer drop into ldb when a clause
409 contains an undefined condition type; regression in 1.1.19 (lp#1378939)
410 * bug fix: in interpreted code, inequality predicates did not type-check
411 arguments that weren't examined, and a 1-argument use of MIN or MAX
412 accepted a complex number. (lp#1373702)
413 * bug fix: APROPOS and APROPOS-LIST handle inherited symbols correctly.
414 (lp#1364413, thanks to Zach Beane)
416 changes in sbcl-1.2.4 relative to sbcl-1.2.3:
417 * enhancement: the sequence functions MAP, CONCATENATE and MERGE now call
418 the new generic functions SEQUENCE:MAP, SEQUENCE:CONCATENATE and
419 SEQUENCE:MERGE respectively when the specified result type designates an
421 * bug fix: Wrong binding order of supplied-p parameters in macro lambda
423 * bug fix: VALIDATE-SUPERCLASS returns T when the superclass is the
424 universal superclass (lp#1332983)
425 * bug fix: reading an uninterned symbol whose print name has the
426 syntax of an integer signals an error. (lp#310062)
427 * bug fix: the walker is less likely to be confused when walking LET* forms
428 with special bindings and use of those bindings and others of the same
430 * bug fix: a rare bug affecting 32-bit platforms resulting in a
431 fatal condition with the message "Globaldb rehash failure" has been fixed.
433 changes in sbcl-1.2.3 relative to sbcl-1.2.2:
434 * enhancement: DOCUMENTATION works on instances of
435 FUNCALLABLE-STANDARD-CLASS
436 * enhancement: ASSERT reports arguments of calls to lexical functions in
437 additional to global functions.
438 * enhancement: ASDF updated to 3.1.3
439 * enhancement: UIOP can be loaded without ASDF.
440 * bug fix: some methods on CHANGE-CLASS did not finalize the new class
441 before accessing its class-precedence list.
442 * bug fix: CHANGE-CLASS no longer fails on unbound slots in the source
444 * bug fix: CHANGE-CLASS signals an appropriate error when the destination
445 class is a FORWARD-REFERENCED-CLASS.
446 * bug fix: CHANGE-CLASS no longer signals bogus TYPE-ERRORs for slots for
447 which initargs have been supplied.
448 * bug fix: saving cores on ARM was broken since the introduction of GENCGC.
450 * bug fix: macroexpanding a backquoted expression involving ",."
451 outside of the compiler failed. (lp#1354623)
453 changes in sbcl-1.2.2 relative to sbcl-1.2.1:
454 * incompatible change: the #\` ("backquote") reader macro was reimplemented
455 to support robust pretty-printing. Reading a form involving #\` produces
456 an invocation of the QUASIQUOTE ordinary macro which may contain subforms
457 that are not lists. Code that unportably attempts operations on
458 un-evaluated forms resulting therefrom, e.g.
459 (SUBST a b (read-from-string "`(x (,y))"))
460 might generate incorrect results and/or errors.
461 * enhancement: support for GNU/kFreeBSD x86.
462 * enhancement: ATOMIC-INCF and ATOMIC-DECF can operate on (CAR x), (CDR x)
463 and DEFGLOBAL variables of type fixnum.
464 * enhancement: arithmetic constant reduction is now performed on defconstant
465 constants too. (lp#1337069).
466 * bug fix: certain ftype proclamations containing &optional t &rest t no
467 longer cause subsequent definitions to signal bogus style-warnings.
468 * bug fix: #\Bell and #\Bel now read to different characters. (lp#1319452).
469 * bug fix: CAS SYMBOL-VALUE on locally special variables didn't work.
472 changes in sbcl-1.2.1 relative to sbcl-1.2.0:
473 * enhancement: GENCGC is enabled on ARM.
474 * enhancement: better error reporting for invalid calls to local functions.
475 * enhancement: support for GNU/kFreeBSD distributions. (lp#1079954, thanks
477 * enhancement: experimental support for threads on NetBSD/x86-64. (thanks
479 * enhancement: support for DragonFly BSD. (lp#1292845, thanks to Vasily
481 * bug fix: TYPE-OF must not return AND/OR/NOT expressions.
483 * bug fix: accessing NIL arrays stopped producing errors. (lp#1311421)
484 * bug fix: DISASSEMBLE no longer prints unwanted stuff. (lp#1251861)
485 * bug fix: compiling SVREF on unknown types no longer produces scary errors.
487 * bug fix: assorted LOOP fixes and enhancements. (lp#645534, lp#1322923,
488 lp#700538, lp#613876, lp#695286, lp#798388)
489 * bug fix: silence compiler notes from the SEARCH transform. (lp#1071310)
490 * bug fix: array type intersection handles T and unknown element types
491 correctly. (lp#1258716)
492 * bug fix: fix a corner case in array type unparsing that would result in
493 misleading translations from our internal type representation.
494 * bug fix: array-rank now sees through union and intersection types.
496 * bug fix: when DECLARE expressions are in the wrong place, be careful not
497 to attempt to evaluate the subforms. (lp#573747; thanks to Roman
499 * bug fix: misplaced and missing declarations in DEFTRANSFORM. (lp#1066451)
500 * bug fix: FBOUNDP returned NIL for a class of incorrect function names
501 instead of signaling an error. (lp#1095483)
502 * bug fix: fix a compile-time AVER in regalloc: lifetime analysis
503 used to (rarely) introduce duplicate conflict markers in a single
504 TN/block pair. (lp#1327008)
506 changes in sbcl-1.2.0 relative to sbcl-1.1.18:
507 * bug fix: read-time-eval backquote context mixup. (lp#1321047)
508 * enhancement: when SAVE-LISP-AND-DIE fails due multiple threads, the
509 report of the signaled conditions lists currently running threads.
510 * enhancement: ported to ARM linux.
511 * enhancement: sb-gmp contrib has been updated. (lp#1305266)
512 * enhancement: new contrib sb-mpfr by Stephan Frank.
513 * bug fix: MAKE-SEQUENCE works with sequence types defined via DEFTYPE
514 (lp#1315846, thanks to Mark Cox)
515 * bug fix: SET-[DISPATCH-]MACRO-CHARACTER should coerce a symbolic
516 function-designator to a function only as needed. (lp#1012335)
517 * bug fix: remove references to asdf-install from the manual. (lp#1207544,
518 thanks to Thomas Hlavaty)
519 * bug fix: handle --without-xxx options to make.sh more carefully.
520 (lp#1246665, thanks to Richard M Kreuter)
521 * bug fix: prevent maybe-delete-exit from doing semantically broken things
522 with local exits. (lp#309099, lp#518099, lp#533930)
523 * bug fix: attempts to subclass BUILT-IN-CLASSes signal errors, as required
526 changes in sbcl-1.1.18 relative to sbcl-1.1.17:
527 * optimization: COERCE is now more effecient for more cases when the type is
528 known at compile-time.
530 * bug fix: correctly inherit condition initforms. (lp#1300904)
531 * bug fix: properly pprint literal functions inside nested lists.
533 * bug fix: more-correctly handle array-type unity (broken for ages, causing
534 compilation problems since 1.1.13.x due to smarter TYPEP type propagation,
535 reported by jasom in #lisp).
537 changes in sbcl-1.1.17 relative to sbcl-1.1.16:
538 * enhancement: printing backtraces respects
539 SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* when printing call arguments
541 * optimization: defstruct out-of-line accessor are now as fast as inlined.
543 * bug fix: INVOKE-RESTART-INTERACTIVELY no longer refuses to invoke RESTART
544 instances with a test-function (reported by Vivitron in #sbcl)
545 * bug fix: STREAM-ERROR-POSITION-INFO fails in fewer situations (lp#1264902)
546 * bug fix: Change COND error message (lp#1254511)
547 * bug fix: LOAD is no longer confused when called on a directory.
549 * bug fix: MAKE-CONDITION reports names of missing condition classes
550 properly (lp#1199223)
551 * bug fix: restore building with clang. (lp#1293643)
552 * bug fix: restore building on SPARC (broken since 1.1.15).
553 * bug fix: improved FreeBSD support.
554 * bug fix: PPC floating point conversion corrupted stack.
556 changes in sbcl-1.1.16 relative to sbcl-1.1.15:
557 * minor incompatible change: improve read/print consistency for pathnames on
558 Win32, by using the circumflex character #\^ as the escape character.
560 * enhancement: SB-EXT:DEFINE-LOAD-TIME-GLOBAL. (lp#1253688)
561 * enhancement: Loading fasls with symbols from an undefined package includes
562 the name of the symbol in the error message.
563 * bug fix: problems when redefining classes and doing TYPEP on classes
564 concurrently. (lp#1272742)
565 * bug fixes to the x86-64 XCHG instruction:
566 ** it was misencoded when used with RAX, R8-R15 registers. (reported by
568 ** it was misencoded when used to exchange EAX with itself.
569 ** the disassembler wrongly printed XCHG RAX, R8 and the corresponding
570 32- and 16-bit variations as NOP.
571 * bug fix: the disassembler outputs source annotations in the right place
572 and no longer randomly drops some of them. (lp#1249205)
573 * bug fix: fix commutative-arg-swap from introducing undumpable structures
574 into code, prevent code with errors from being compiled. (lp#1276282)
575 * bug fix: pathnames with :back in their directory component are succeffully
577 * bug fix: the deterministic profiler now uses ENCAPSULATE functionality to
578 wrap functions around. (lp#309086)
580 changes in sbcl-1.1.15 relative to sbcl-1.1.14:
581 * new feature: the iterative spilling/coloring register allocator developed
582 by Alexandra Barchunova during Google Summer of Code 2013 is now merged
583 in. By default, it only activates for functions that optimize with
584 (speed 3) and (> speed compilation-speed), but setting
585 sb-regalloc:*register-allocation-method* to :iterative forces its
586 execution. The previous behaviour can be obtained by instead setting that
587 variable to :greedy. Thanks again to Google for their support, and, more
588 crucially, to Alexandra Barchunova for her hard work.
589 * optimization: make-array with known element-type and unknown dimensions is
591 * optimization: make-array with unknown element-type is faster as well.
593 * enhancement: sb-ext:save-lisp-and-die on Windows now accepts
594 :application-type argument, which can be :console or :gui. :gui allows
595 having GUI applications without an automatically appearing console window.
596 * enhancement: reduced conservativism on GENCGC platforms:
597 conservative roots must be valid-looking tagged pointers or point
598 within a code object, not merely point to within the allocated part
599 of a page, in order to pin a page.
600 * enhancement: support for "Mac Roman" external format.
601 * enhancement: encapsulation of named generic functions now happens without
602 altering the identity of the function bound to the name.
603 * bug fix: Windows applications without the console window no longer misbehave.
604 (patch by Wilfredo Velazquez, lp#1256034).
605 * bug fix: modular arithmetic optimizations do not stumble on dead branches
606 with bad constants. (reported by Douglas Katzman)
607 * bug fix: CLISP can be used again as a cross-compilation host.
608 (Thanks to Vasily Postnicov, lp#1261451)
609 * bug fix: run-program crashed with :directory nil. (lp#1265077)
611 changes in sbcl-1.1.14 relative to sbcl-1.1.13:
612 * optimization: complicated TYPEP tests are less opaque to the type
613 propagation pass. (lp#1229340)
614 * optimization: [N]BUTLAST perform a single pass over the list. (lp#1245697)
615 * optimization: EQUALP on structures with raw slots (double-float/complex)
616 no longer conses and is faster.
617 * optimization: RESTART-CASE expands to more compact code.
618 Thanks to Jan Moringen. (lp#1249055)
619 * enhancement: Top-level defmethod without defgeneric no longer causes
620 undefined-function warnings in subsequent forms. (lp#503095)
621 * enhancement: Better error messages for system errors on Windows.
622 * enhancement: run-sbcl.sh is usefully handled by rlwrap. Thanks to William
623 Cushing. (lp#1249183)
624 * enhancement: new function SB-EXT:ASSERT-VERSION->= accepts a version
625 specification (multiple integer arguments) and signals a continuable error
626 if the current SBCL version is lower (older) than the specification.
628 * enhancement: better ARRAY-RANK result derivation. (lp#1252108)
629 * bug fix: EQUALP now compares correctly structures with raw slots larger
631 * bug fix: contribs couldn't be built on Windows with MinGW.
632 * bug fix: Better pathname handling on Windows. (lp#922117)
633 * bug fix: OPEN reports a more meaningful error when an existing file is
634 opened for output with :if-exists :new-version. Thanks to Philip
635 Munksgaard. (lp#455381)
636 * bug fix: DEFSTRUCTs with NIL as a slot name no longer cause strange
637 CLOS-related errors. (lp#633911)
638 * bug fix: GC deadlocks caused by concurrent consing on Windows.
640 changes in sbcl-1.1.13 relative to sbcl-1.1.12:
641 * optimization: better distribution of SXHASH over small conses of related
643 * other improvements to SXHASH:
644 ** use the whole of the positive-fixnum range for SXHASH of fixnums
645 * enhancement: The error message when calling an undefined alien function
646 includes the name of the function on x86-64.
647 * enhancement: sb-ext:run-program now supports :environment on Windows.
648 * enhancement: ASDF is no longer required to load contribs at runtime.
650 * enhancement: when called with a symbol, FIND-RESTART no longer calls
651 COMPUTE-RESTARTS, making it faster and cons less (lp#769615)
652 * enhancement: FIND-RESTART and COMPUTE-RESTARTS handle huge restart
653 clusters better in some cases
654 * enhancement: SOME/ANY/other quantification higher-order functions no
655 longer cons. (lp#1070635)
656 * bug fix: forward references to classes in fasls can now be loaded.
658 * bug fix: don't warn on a interpreted->compiled function redefinition
659 from the same location. (patch by Douglas Katzman, lp#1042405)
660 * bug fix: Create vectors of proper internal length when reading literal
661 vectors from FASLs. (Reported by Jan Moringen)
662 * bug fix: COMPILE can now successfully compile setf functions.
663 (Reported by Douglas Katzman)
664 * bug fix: run-program performs more correct escaping of arguments on
665 Windows. (lp#1239242)
666 * bug fix: function-lambda-expression on generic functions returns the
668 * bug fix: (the [type] [constant]) now warns when [constant] matches
669 [type] except for the number of values. (Reported by Nathan Trapuzzano
671 * bug fix: signal errors in required cases of slot-definition initialization
672 protocol. (lp#309072)
673 * bug fix: run-sbcl.sh works better in the presence of symlinks on OS X.
674 (thanks to Stelian Ionescu, lp#1242643)
675 * bug fix: when given a restart object, FIND-RESTART checks whether the
676 restart is active and, when a condition is supplied, whether the restart
677 is associated to a different condition (lp#774410)
679 changes in sbcl-1.1.12 relative to sbcl-1.1.11:
680 * enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
681 shutdown(3). (thanks to Jan Moringen, lp#1207483)
682 * enhancement: document extensible sequences. (thanks to Jan Moringen,
684 * optimization: EQUAL and EQUALP transforms are smarter.
685 (thanks to Elias Martenson, lp#1220084)
686 * optimization: CHAR-EQUAL is faster for constant and base-char arguments.
687 * bug fix: probe-file now can access symlinks to pipes and sockets in
688 /proc/pid/fd on Linux. (reported by Eric Schulte)
689 * bug fix: SBCL can now be built on Solaris x86-64.
690 * bug fix: Floating point exceptions do not persist on Solaris anymore.
691 * bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
692 * bug fix: handle compiler-error in LOAD when it's not run from inside EVAL.
694 * bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base.
695 (thanks to Stephan Frank)
696 * bug fix: space allocation of result bignums in SB-GMP is more accurate.
697 (thanks to Stephan Frank, lp#1206191)
698 * bug fix: sb-safepoint can now reliably handle signal interruptions of
699 foreign code. (lp#1133018)
700 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
701 constructors no longer fails to merge actual and default initargs
702 (thanks to Jan Moringen, lp#1179858)
703 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
704 constructors handles non-KEYWORD initialization arguments more correctly.
705 * bug fix: loading the SB-SIMPLE-STREAMS contributed module no longer
706 clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, lp#884603)
707 * bug fix: class definitions with CPLs inconsistent with their metaclasses
708 are less likely to destroy the object system's integrity. (lp#309076)
709 * bug fix: restart clause parsing in RESTART-CASE is more in line with the
710 standard. (lp#1203585, thanks to Jan Moringen)
711 * bug fix: silence a note from RESTART-CASE under high-SPEED optimization
712 settings. (lp#1023721)
713 * bug fix: getting the order of arguments to
714 SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error
715 rather than a failed AVER. (reported by Paul Nathan)
716 * bug fix: Parsing of &optional/&key/&rest arguments now never overwrites
717 arguments during copying on x86 and x86-64; it may still happen on other
718 platforms when there are more fixed arguments than stack slots.
719 (reported by Jan Moringen)
721 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
722 * enhancement: support building the manual under texinfo version 5.
724 * enhancement: Windows builds no longer display the "Kitten of Death" message.
725 A warning is instead appended to the regular banner, and may be muted with
726 --noinform. (lp#728247)
727 * enhancement: support building under new linker handling of syscalls under
728 NetBSD. (thanks to Robert Swindells)
729 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
730 (regression since 1.1.9)
731 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
732 compiler macro. (thanks to Douglas Katzman).
733 * bug fix: signal a warning when defining a setf-function when a
734 setf-expander is already present. (thanks to Douglas Katzman).
735 * bug fix: improved threading on PPC.
736 * bug fix: ROOM works again on Windows. (lp#1206456)
737 * bug fix: Streams were flushed even when there was one byte still left in
738 the buffer. (lp#910213)
739 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
740 either NIL or :ERROR. (reported by Jan Moringen)
742 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
743 * enhancement: ASDF has been updated to 3.0.2.
744 * optimization: stack frames are packed more efficiently on x86oids, which
745 ought to reduce the frequency of Methuselahn conservative references (it
746 certainly helps with gc.impure.lisp / BUG-936304 on x86).
747 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
748 recognized in modular arithmetic contexts, and compile to native negate,
749 rather than going through bignums only to keep the low bits.
750 * bug fix: Compiling potential modularic arithmetic forms does not cause type
751 errors when some integer types lack lower or upper bounds. (lp#1199127)
752 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
753 bitwidth before being used in a non-modular context. (lp#1199428)
754 * bug fix: Multiple catch/unwind blocks in a single function are now
755 allocated in the right stack order on win32. (lp#1072739)
757 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
758 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
759 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
760 * enhancement: disassemble now annotates some previously missing static
761 functions, like LENGTH.
762 * enhancement: clean.sh now also cleans doc/internals.
763 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
764 print a symbol with a package prefix.
765 * enhancement: The debugger and backtracing are more robust against buggy
766 PRINT-OBJECT methods.
767 * optimization: calls to static functions on x86-64 use less instructions.
768 * optimization: compute encode-universal-time at compile time when possible.
769 * optimization: when referencing internal functions as #'x, don't go through
770 an indirect fdefn structure.
771 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
772 * optimization: (mod fixnum) type-checks are performed using one unsigned
773 comparison, instead of two.
774 * optimization: enable more modular arithmetic transforms in the presence of
776 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
777 when the result is known to be negative.
778 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
779 * optimization: comparisons between rationals and constant floats or between
780 integers and constant ratios are now converted to rationals/integers at
782 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
783 * bug fix: problems with NCONC type derivation (reported by Jerry James).
784 * bug fix: EXPT type derivation no longer constructs bogus floating-point
785 types. (reported by Vsevolod Dyomkin)
786 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
787 addrinfo. (lp#1187041, patch by Jerry James)
788 * bug fix: uninitialized type-error conditions can now be printed.
790 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
791 listening, allowing several tests to run in parallel.
792 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
793 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
795 * bug fix: Specialised SIMD-PACK types can be negated.
796 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
797 reported by Eric Marsden)
798 * bug fix: FP return values from foreign calls are always rounded to single
799 or double float precision on x87.
800 * bug fix: Known-safe vector access on x86oids should not fail spuriously
801 when the index is of the form (+ x constant-positive-integer).
802 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
803 * bug fix: backtrace printer no longer tries to create very large lists when
804 the arg-count register is clobberred by other code. (lp#1192929)
805 * bug fix: x86 should never signal an FP exception while boxing an FP value,
806 a situation that lands us into ldb.
808 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
809 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
810 ROOM, plus a few SB-INTROSPECT functions) has been completely
811 rewritten; it may now exhibit different bugs than before.
812 * new feature: minimal runtime/compiler intrastructure support for SSE
813 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
814 feature :sb-simd-pack. This should enable intrinsics extensions as
815 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
816 for maintaining a branch for so long.
817 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
818 the working directory of the spawned process.
819 (lp#791800) (patch by Matthias Benkard)
820 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
821 stack-allocated on PPC.
822 * enhancement: "fixed objects" can now be stack-allocated on PPC.
823 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
824 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
825 also returns VOPs which do not translate any functions, and finds
826 defoptimizer types ir2convert and stack-allocate-result.
827 * enhancement: better type derivation for APPEND, NCONC, LIST.
829 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
830 heap in a manner similar to the GC rather than its previous ad-hoc
831 scheme, and is therefore no less and possibly more accurate.
832 * fixes and enhancements related to Unicode:
833 ** the character database information has been updated to Unicode 6.2;
834 ** support for canonical and compatibility decomposition of characters has
835 been added, along with support for primary composition;
836 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
837 NFKD) has been included;
838 ** querying the character database for code points not defined by Unicode
839 gives less wrong answers (lp#1178038, reported by Ken Harris)
840 * enhancement: print intermediate evaluation results for some ASSERTed
841 expressions. (lp#789497) (patch by Alexandra Barchunova)
842 * enhancement: x86-64 disassemblies are annotated with unboxed constant
843 values when there are references to (RIP-relative) unboxed constants.
844 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
845 of quadratically with the size of the input in the worst case.
847 * bug fix: handle errors when initializing *default-pathname-defaults*,
848 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
849 decoding errors, or directories being deleted.
850 * bug fix: Loading a core with a discontiguous dynamic space now correctly
851 computes the amount of dynamic space used.
852 * bug fix: disassembler missing ",8" on SHLD
853 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
854 that provide an "invalid" stack frame link for the signal handler
855 itself now use the saved-fp-and-pc mechanism to pick up from the stack
856 frame in the interrupt (signal) context. This is known to affect
857 threaded FreeBSD/x86-64.
858 * bug fix: some LOOP statements couldn't be compiled.
860 * bug fix: sb-sequence:dosequence works on literal vectors.
861 * bug fix: errors in generic arithmetic show the assembly routine's
862 caller on x86 and x86-64. (lp#800343)
863 * bug fix: Compile-time type errors should never result in COMPILE-FILE
865 * bug fix: Known bad local calls do not cause strange failures when
866 emitting or dumping code. (lp#504121)
867 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
868 codegen errors: type checks are inserted as necessary. (lp#1177703)
869 * bug fix: Unsigned modular arithmetic is correctly converted into signed
870 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
871 * bug fix: a combination of inlined local function with &optional and
872 recursion no longer causes undescriptive compiler errors. (lp#1180992)
873 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
874 when testing for non-zero-ness.
875 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
877 * bug fix: Type mismatch for the value of conditional expressions are
878 correctly reported when detected at compile-time, instead of complaining
879 about a constant NIL (similar for non-EQ-comparable catch tags).
880 * bug fix: Referring to INLINE global functions as values should not result
881 in a compilation failure. (lp#1035721)
882 * optimization: faster ISQRT on fixnums and small bignums
883 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
884 * optimization: On x86-64, the number of multi-byte NOP instructions used
885 for code alignment is now always minimal.
886 * optimization: On 64-bit targets, the compiler generates much faster
887 code for type checks for types known at compile time that are smaller
888 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
889 their COMPLEX variants.
890 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
891 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
892 * optimization: ROOM no longer conses so egregiously on non-x86oid
894 * optimization: associative bitwise operations reassociate patterns like
895 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
897 * optimization: quasiquote expressions now perform more constant folding,
898 instead of consing equal lists at runtime. (lp#1026439)
899 * optimization: local call analysis of inlined higher-order function
900 should converge more quickly, resulting in better code for complex
902 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
903 integer constants are handled more cleverly, especially when they
904 can be represented as sign-extended (signed-byte 32). (Based on a
905 patch by Douglas Katzman)
906 * optimization: IF/IF conversion should reliably result in sane code
907 when (some of) the results of the inner IF are always false or
909 * optimization: On x86oids, variable right shifts of machine words are
910 compiled into straight SAR/SHR, instead of going through the generic
913 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
914 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
916 * bug fix: :allocation slot option works for condition slots
918 * bug fix: redefining conditions does not lead to multiple evaluations of
919 hairy slot initfunctions anymore (lp#1164969)
920 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
922 * bug fix: function constants now work as initforms and default initarg
923 values of conditions (lp#539517)
924 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
925 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
926 * bug fix: no more bogus ## references when pretty printing backquoted
927 forms with non-trivial structure sharing. (lp#1161218)
928 * bug fix: Don't signal an error on (setf (documentation nil 'function)
929 "doc"). Signal a style-warning instead when trying to set documentation
930 of NIL for all other documentation types. (Reported by Zach
931 Beane; regression since 2e52fa05.)
932 * bug fix: modular arithmetic involving large constants and conditionals
933 should no longer result in spurious dead code elimination. (Reported by
935 * bug fix: our mach exception handler can seemingly called very early in
936 the program execution process on OS X 10.8.0. Try and handle that case
937 robustly, without potentially leaking mach ports too much.
938 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
940 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
941 * enhancement: the continuable error when defknown-ing over extant
942 fndb entries can be ignored by passing :overwrite-fndb-silently t
943 as a keyword argument to sb-c:defknown (after attributes). Useful
944 to allow defknown to be re-loaded. Use with :allow-other-keys t
945 for backward compatibility.
946 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
948 * bug fix: Prevent a make-array transform from modifying source forms
949 causing problems for inlined code. Thanks to Bart Botta.
950 (regression since 1.0.42.11-bis)
951 * bug fix: clear-output calls the correct gray stream routine,
952 sb-gray:stream-clear-output. (lp#1153257)
953 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
955 * bug fix: Better error messages for package operations (lp#1154776)
956 * bug fix: delete-package on a nonexistent package should signal a cerror.
957 (regression since 1.0.37.44).
958 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
959 (lp#1154946, lp#1072112)
960 * bug fix: compiling make-array no longer signals an error when the
961 element-type is an uknown type, a warning is issued instead.
962 Thanks to James Kalenius (lp#1156095)
963 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
964 produces wrong results for some inputs. (Thanks to Jan Moringen.)
967 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
968 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
970 * new feature: package local nicknames. See manual for details.
971 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
972 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
973 * enhancement: easier to use restarts for resolving name-conflicts
974 resulting from IMPORT, EXPORT, or USE-PACKAGE.
975 * enhancement: variant DEFPACKAGE forms now signal a full error with
976 restarts provided for resolving the situation. (lp#891351)
977 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
978 DEFPACKAGE forms can now signal a full error with restarts provided for
979 resolving the situation. See manual for details. (lp#891351)
980 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
981 (Thanks to Anton Kovalenko.) (lp#1102748)
982 * enhancement: backtrace improvements
983 ** secondary CLOS dispatch functions have better debug names (lp#503081)
984 ** easier to read method names in backtraces. See
985 SB-DEBUG:*METHOD-FRAME-STYLE*.
986 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
987 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
988 SB-DEBUG:BACKTRACE-AS-LIST.
989 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
990 information is available in less intrusive form as frame annotations.
991 * enhancement: SB-POSIX now provides MAP-ANON.
992 * enhancement: test-suite results are colorized, failures in red, unexpected
993 success in green. Works on Windows and on terminals with ANSI escape code
994 support. Can be disabled with --no-color.
995 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
996 (thanks to James M. Lawrence)
997 * bug fix: no more unused variable style warnings from RESTART-CASE
998 macroexpansion (lp#1113859)
999 * bug fix: no more unused variable style warnings when loading
1000 sb-bsd-sockets.asd (lp#1114681)
1001 * bug fix: deleting a package removes it from implementation-package
1002 lists of other packages.
1003 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
1004 This does not fix the occasional "interrupt already pending" issue, though.
1005 * bug fix: (setf (documentation 'x 'function)) and
1006 (setf (documentation #'x t)) set documentation in different places.
1007 (regression since 1.0.43.63)
1008 * bug fix: build on newer glibc. (lp#1095036)
1010 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
1011 * optimization: LOOP expressions using "of-type character" have slightly
1012 more efficient expansions.
1013 * bug fix: very long (or infinite) constant lists in DOLIST do not result
1014 in very long compile times or heap exhaustion anymore. (lp#1095488)
1015 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
1016 * bug fix: adjust-array ignored :initial-element for simple-vectors.
1018 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
1019 longer cause infinite loops (on circular data) or violate eqlity
1020 constraints. (lp#1099708)
1021 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
1023 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
1024 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
1026 * enhancement: support for C-c to interrupt the foreground thread
1027 on Windows. (Thanks to Anton Kovalenko.)
1028 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
1029 * enhancement: Safepoint builds on POSIX platforms can now optionally be
1030 built without pseudo-atomic sequences and their run-time overhead.
1031 * enhancement: Threads created outside of Lisp can enter Lisp through
1032 alien callbacks and appear as Lisp threads for the duration of that
1033 function invocation. On safepoint builds only.
1034 * enhancement: Miscellaneous improvements to namestrings and underlying
1035 calls to OS functions for file system access on Windows. (Thanks to
1037 * enhancement: The MSI installer support for Windows now uses Windows
1038 Installer XML at least version 3.5 and includes various usability
1039 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
1040 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
1041 on Windows. (Thanks to Anton Kovalenko.)
1042 * enhancement: The Windows backend now supports the x86-64 platform.
1043 (Thanks to Anton Kovalenko.)
1044 * bug fix: fasls are now once again directly executable (on platforms
1045 supporting shebang lines, with a suitably-installed sbcl).
1046 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
1047 * bug fix: Fix CAS access to slots of direct instances of structure classes
1048 in the presence of subclasses sharing the same conc-name.
1049 * bug fix: Logical pathname namestrings on Windows have been changed to
1050 be lower-case, to minimize differences between POSIX and Windows.
1052 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
1053 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
1054 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
1055 (NT 5.0) is no longer being maintained.
1056 * notice: Starting with this version, SBCL on Windows no longer supports
1057 building with disabled thread support.
1058 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
1059 * enhancement: New feature sb-dynamic-core allows the runtime to be
1060 rebuilt or relocated without requiring changes to the core file on
1061 all linkage table platforms. Required on Windows. (Thanks to Anton
1063 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
1064 * enhancement: I/O on Windows unnamed pipes is interruptible
1065 asynchronously using interrupt-thread, timers when running on Windows NT
1066 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
1068 * enhancement: Support for the experimental safepoint-based stop-the-world
1069 protocol on the PowerPC platform.
1070 * bug fix: Non-blocking reads from the Windows console were not necessarily
1071 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
1072 * bug fix: stability of threads on Windows has been improved upon through
1073 an updated stop-the-world protocol (thanks to Anton Kovalenko).
1075 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
1076 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
1077 (COMPILE and COMPILE-FILE still do.)
1078 * optimization: the SPARC backend now supports the precise generational
1079 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
1080 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
1081 * enhancement: add experimental support for the SB-THREAD feature and the
1082 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
1083 Threads are enabled by default, and this version of SBCL is considered
1084 to be the last and final release to officially support building with
1086 * optimization: The compiler no longer rotates loops in some cases where
1087 this transformation actually lead to worse code being generated.
1088 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
1089 symbol-macros by lexical bindings.
1090 * bug fix: stack allocation was prevented by high DEBUG declaration in
1092 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
1093 (thanks to SANO Masatoshi)
1094 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
1095 :JUNK-ALLOWED was true.
1096 * bug fix: type derivation inferred overly conservative types for
1097 unions of array types. (lp#1050768)
1099 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
1100 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
1101 source annotation of DISASSEMBLE output. Defaults to T.
1102 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
1103 WAIT-P argument added to WITH-RECURSIVE-LOCK.
1104 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
1106 * enhancement: Optional features (not enabled by default) allow the
1107 use of signals for inter-thread synchronization to be reduced on certain
1108 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
1109 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
1110 to test these experimental features. Known remaining bugs include minor
1111 thread safety issues, less timely freeing of memory by GC, and certain
1112 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
1113 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
1114 comparisons, particularly on almost-sorted inputs.
1115 * bug fix: Reading floats with large exponents no longer takes too much time
1116 before reporting that the exponent is too large.
1117 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
1118 correctly when the received datagram is larger than the provided buffer.
1119 (lp#1023438, thanks to Robert Uhl)
1120 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
1121 a SYMBOL-VALUE form with a constant symbol argument.
1122 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
1123 into a DEFCAS defined place was used as the place.
1124 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
1125 for from bit-vectors.
1126 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
1127 lead to internal errors or crashes (lp#1058799).
1128 * documentation: a section on random number generation has been added to the
1131 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
1132 * enhancement: implicit generic function warnings now specify the package
1133 in which the new generic function is being created.
1134 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
1135 updates of CAS-able places (similar to Clojure's swap!).
1136 * enhancement: run-program no longer decodes and re-encodes environment when
1137 :environment argument is not provided. (lp#985904)
1138 * enhancement: errors during compiler-macro expansion no longer cause
1139 runtime errors, only a compile-time warning, otherwise behaving as if
1140 the compiler macro had declined to expand.
1141 * optimization: On x86-64, code alignment of block headers is done with
1142 multi-byte NOPs now instead of repetitions of the single-byte NOP.
1143 * optimization: MAP-INTO is substantially faster when the target sequence is
1144 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
1145 thanks to James M. Lawrence)
1146 * optimization: the compiler no longer heap-conses to check exits in cases
1147 where the exit function is dynamic extent, or when it can prove the exit
1148 function cannot escape. (lp#1002534)
1149 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
1150 element type, and vectors that aren't SIMPLE-ARRAYs.
1151 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
1152 speed (around 1/3 the time in some cases), and a little better in terms of
1153 comparison calls. (Thanks to Takeru Ohta)
1154 * bug fix: On SPARC, a limitation on the number of code constants emittable
1155 by the compiler has been lifted, allowing certain long functions to
1156 compiled and assembled which had previously been unsupported; fixes
1157 cl-bench on this ISA (lp#1008996).
1158 * bug fix: potential for infinite recursion during compilation of CLOS slot
1159 typechecks when dependency graph had loops. (lp#1001799)
1160 * bug fix: error forms reported with some program-errors were not escaped
1162 * bug fix: functions from EVAL are now on more equal footing with functions
1163 from COMPILE. (lp#1000783, lp#851170, lp#922408)
1164 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
1165 objects as its :METHOD-COMBINATION argument, not just lists designating
1166 method combinations. (lp#936513)
1167 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
1169 * bug fix: restore build on solaris/sparc. (lp#1008506)
1170 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
1171 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
1172 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
1173 as keyword arguments no longer accidentally match unevaluated symbols
1175 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
1176 parameter was zero, now it signals an error. (lp#905817, fixed since
1178 * bug fix: run-program with :pty t no longer makes the pty as the process's
1179 controling terminal.
1180 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
1183 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
1184 * RANDOM enhancements and bug fixes:
1185 ** bug fix: the range and distribution of random integers could be
1186 catastrophically wrong when the compiler derived the type of its
1187 argument as a disjoint set of small integers.
1188 ** bug fix: the distribution of random integers is now completely
1189 uniform even when the specified limit is not a power of two.
1190 (Previously some values could be about 0.1 % more probable than
1191 others in the worst case.) (lp#309467)
1192 ** RANDOM on large integer arguments is generally faster and conses
1193 less than before; this is visible for fixnums above a length of
1194 about 24 bits, but extremely so for bignums: the old implementation
1195 used time and space quadratical in the size of the argument there,
1196 the new one is linear.
1197 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
1198 main entry point, SB-EXT:QUIT is deprecated.
1199 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
1200 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
1201 * enhancement: FASL loading no longer grabs the world-lock.
1202 * enhancement: GENCGC reclaims space more aggressively when objects being
1203 allocated are a large fraction of the total available heap space.
1205 * enhancement: backtraces show the correct number of arguments for frames
1206 called with too many arguments.
1207 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
1209 * enhancement: ASDF has been updated 2.21.
1210 * optimization: fewer uses of full calls to signed modular functions.
1212 * optimization: typechecking alien values is typically 5 x faster.
1213 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
1215 * bug fix: file compilation performance issues when dumping subtypes
1216 of CHARACTER (lp#994487)
1217 * bug fix: fixed disassembly of some SSE instructions on x86-64.
1218 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
1219 OPEN. (lp#969352, thanks to Kambiz Darabi)
1220 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
1222 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
1223 classoid even if X was not the proper name of the class. (lp#941102)
1224 * bug fix: declaration leakage between lexical environments due to careless
1225 use of NCONC in MAKE-LEXENV. (lp#924276)
1226 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
1227 *default-pathname-defaults* contains NAME or TYPE components.
1228 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
1229 from CL package, e.g. (loop . 10).
1230 * bug fix: run-program with existent or non-existent files for :output or
1231 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
1232 returns NIL instead of signalling an obscure error.
1233 * bug fix: fix miscompilation of some logand forms with large constant
1234 arguments. (lp#974406)
1235 * bug fix: account for funcallable-instance objects properly in ROOM.
1236 * bug fix: incorrect octets reported for c-string decoding errors.
1238 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
1240 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
1241 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
1242 allowing faster release of memory back to the OS. (lp#991293)
1243 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
1244 existing deadline for the dynamic scope of its body.
1245 * bug fix: compiler-internal interval arithmetic needed to be more
1246 conservative about open intervals when operated on by monotonic but not
1247 strictly-monotonic functions. (lp#975528)
1248 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
1249 it's also slightly faster. (lp#998926)
1250 * bug fix: better error messages for malformed declarations.
1252 * bug fix: define-condition didn't return the name of the defined condition.
1254 ** improved docstrings: REPLACE (lp#965592)
1256 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
1257 * bug fix: fix copy-structure. When copying from stack to heap, garbage
1258 could end up in the heap making GC unhappy.
1259 (Thanks to James Knight, lp#911027)
1261 ** SBCL can now be built using Clang.
1262 ** ASDF has been updated 2.20.
1263 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
1264 * bug fix: don't complain about a too-hairy lexical environment for inlining
1265 when the function has never been requested for inlining. (lp#963530)
1267 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
1268 * enhancements to building SBCL using make.sh:
1269 ** --fancy can be specified to enable all supported feature enhancements.
1270 ** --with-<feature> and --without-<feature> can be used to specify
1271 which features to build with.
1272 ** --arch option can be used to specify the architecture to build for.
1273 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
1274 full-blows cross-compilation.)
1275 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
1276 which allows specifying name of the default interning package for the
1278 * enhancement: when *READ-EVAL* is true, arrays with element type other than
1279 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
1280 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
1281 null alien when malloc() fails. (lp#891268)
1282 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
1283 conditions can be conveniently accessed through function with the same
1284 name, analogously to CONTINUE.
1285 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
1286 from the printer by type, causing an error marker to be printed instead.
1287 (Thanks to Attila Lendvai)
1288 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
1289 generally behave better when errors occur during printing.
1290 * enhancement: the test runner now takes a --report-skipped-tests argument
1291 to report the individual tests skipped as well as the number of skipped
1293 * enhancement: undefined functions now appear in backtraces as ("undefined
1294 function") instead of ("bogus stack frame") on x86oids.
1295 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
1296 deadlock errors are reported in an easier-to-decipher manner.
1297 * enhancement: DESCRIBE on type designators reports the expansion in more
1299 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
1300 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
1301 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
1302 * enhancement: better disassembly of segment-prefixes on x86 and other
1303 instruction prefixes (e.g. LOCK) on x86 and x86-64.
1304 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
1305 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
1306 * optimization: SUBSEQ on vectors of unknown element type is substantially
1308 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
1309 be stack-allocated. (lp#902351)
1310 * optimization: the compiler is smarter about representation selection for
1311 floating point constants used in full calls.
1312 * optimization: the compiler no longer refuses to coerce large fixnums to
1313 single floats inline, except on x86 where this limitation is still
1315 * optimization: truncation operations on integers with constant divisor
1316 arguments 1 and -1 are optimized away.
1317 * bug fix: deadlock detection could report the same deadlock twice, for
1318 two different threads. Now a single deadlock is reported exactly once.
1319 * bug fix: interval-arithmetic division during type derivation did not
1320 account for signed zeros.
1321 * bug fix: compiler error when typechecking a call to a function with
1322 non-constant keyword arguments.
1323 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
1324 * bug fix: condition slot accessors no longer cause undefined function
1325 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
1326 form that defines them. (lp#896379)
1327 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
1328 by ANSI. (lp#894202)
1329 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
1330 bogusly report NIL, T.
1331 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
1332 required arguments ignored and performed assignments to others.
1334 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
1335 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
1336 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
1337 * bug fix: redefining a function whose previous definition contained an
1338 unknown type no longer causes a style-warning. (lp#806243)
1339 * bug fix: undefined functions now appear in backtraces as ("undefined
1340 function") instead of ("bogus stack frame") on non-x86oids.
1341 * bug fix: backtraces are no longer cut off at ("undefined function") when
1342 called under certain circumstances (involving a caller-allocated stack
1344 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
1345 systems. (regression since 1.0.53)
1346 * bug fix: GC deadlocks from dladdr() on certain platforms.
1347 * bug fix: broken standard streams no longer automatically cause recursive
1348 errors on debugger entry.
1349 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
1350 (regression since 1.0.53)
1351 * bug fix: attempts to stack allocate a required argument to a function with
1352 an external entry point caused compiler-errors.
1353 * bug fix: compiler notes for failed stack allocation for a function argument
1354 no longer claim to be unable to stack allocate the function.
1355 * bug fix: COERCE now signals a type-error on several coercions to
1356 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
1357 * bug fix: missing failure-to-stack-allocate compiler notes for some
1358 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
1359 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
1361 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
1363 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
1364 * minor incompatible changes:
1365 ** RENAME-FILE on a symbolic links used to rename the linked-to file
1366 instead of the link.
1367 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
1368 directory, but now signal an error instead. Use TRUENAME to resolve the
1369 pathname if you wish to delete the linked directory, and DELETE-FILE if
1370 you wish to delete the
1371 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
1372 symbols associated with it will trigger a compile-time warning.
1373 * thread-related enhancements:
1374 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
1375 Many thanks to generous donors!)
1376 ** Threading is now more reliable on non-Linux platforms. We still don't
1377 consider threads on non-Linux platforms good enough to enable them by
1378 default, but they're in a clearly better shape now.
1379 ** Deadlines supported now on all platforms.
1380 ** All blocking functions in the threading API now have a :TIMEOUT
1382 ** Semaphore notification objects have been added to SB-THREAD.
1383 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
1384 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
1385 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1386 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
1387 using an API anologous to defining new SETFable places.
1388 * GC-related enhancements and bug fixes:
1389 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
1390 and Gb suffixes. Default is megabytes as before.
1391 ** on GENCGC targets, the default dynamic space size is now 512Mb for
1392 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
1393 exception, defaulting to mere 444Mb to fit under default ulimits.) The
1394 new defaults are in place to prevent hitting swap on low-end systems.
1395 Use build-time option --dynamic-space-size to build an SBCL with
1396 another default, or the runtime option to adjust the size at startup: a
1397 good size is at most equal to the amount of physical memory the system
1399 ** on GENCGC targets, nursery and generation sizes now default to 5% of
1401 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
1402 refuses to create SIMPLE-FUN objects.
1403 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
1405 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
1406 validation of pointer objects as GENCGC does, instead of a
1407 comparatively weak bounds-check against the heap spaces.
1408 * SB-BSD-SOCKETS bug fixes:
1409 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
1410 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
1411 systems with getaddrinfo().
1412 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
1413 safe outside systems with getaddrinfo().
1414 * enhancement: ASDF has been updated 2.019.
1415 * enhancement: special-case TCO prevention for functions which never return
1416 extended to untrusted types, keeping one more frame's worth of debug
1417 information around in many cases.
1418 * enhancement: debug-names of anonymous and local function are more
1419 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
1420 * enhancement: on win32, ABS of complex floats guards better against
1421 overflows. (lp#888410)
1422 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
1423 process exiting with code 1. (lp#676987)
1424 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
1425 the system where on the filesystem the SBCL sources themselves are
1426 located. (Thanks to Zach Beane)
1427 * enhancement: the compiler is now able to derive tighter bounds for
1428 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
1429 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
1430 correctly, even on wide-fixnum builds. (lp#887220)
1431 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
1432 resolved to directories.
1433 * bug fix: type mismatch when assigning to lexical variables no longer
1434 result in fasl-dumping internal type objects. (lp#890750)
1435 * bug fix: type mismatch on (SETF AREF) and function return values no
1436 longer result in fasl-dumping internal type objects.
1437 * bug fix: With several combinations of argument types, for example (EXPT
1438 <integer> <(complex double)>), EXPT now uses double-precision throughout
1439 instead of partially calculating only to single-precision. (lp#741564;
1440 thanks to Lutz Euler)
1441 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
1442 objects when interrupted by GC on PPC.
1444 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
1445 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
1446 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
1447 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
1448 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
1449 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
1450 targets is now 63 bits (up from 61).
1451 * enhancement: DESCRIBE now reports a lambda-list and source location
1452 for complext setf-expanders.
1453 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
1454 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
1455 of multiple-valued places to be set to NIL, instead of signalling an
1456 error (per a careful reading of CLHS 5.1.2.3).
1457 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
1458 * bug fix: repair crash in x86oid darwin signal handling emulation
1459 when built with certain compilers.
1460 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
1461 rotation arguments on x86-64. (lp#882151)
1462 * bug fix: low-level control flow optimisations could result in bogus
1463 code in functions with tail and non-tail calls to local functions on
1464 x86oids. (lp#883500)
1465 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
1466 to emit literal characters > (code-char 4095), for comparisons with
1467 constant characters.
1468 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
1469 on 64 bit platforms. (lp#881445)
1470 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
1471 delete the wrong file when using relative pathnames. (lp#882877)
1472 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
1473 sequences and :KEY NIL.
1475 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
1476 * enhancement: ASDF has been updated to version 2.017.
1477 * enhancement: the --core command line option now accepts binaries with
1479 * enhancement: when built with :sb-core-compression, core files (regular
1480 or executable) can be compressed with zlib. Use the :COMPRESSION
1481 argument to SAVE-LISP-AND-DIE to specify a compression level.
1482 * enhancement: --[no-]merge-core-pages determines whether the runtime
1483 hints the operating system that identical core pages between SBCL
1484 processes should share the same physical memory. Default is to only
1485 enable this for compressed cores.
1486 * optimization: SLEEP no longer conses.
1487 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
1488 or bit-vectors when using the standard pretty-print dispatch table.
1489 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
1491 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
1492 AREF, CHAR, etc. (lp#826971)
1493 * bug fix: compiler-errors causes by integer arguments with composed of
1494 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
1495 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
1496 expressions. (lp#770184)
1497 * bug fix: complex single float literals are correctly aligned when used
1498 as arguments of arithmetic operators.
1499 * bug fix: on 32-bit platforms, rounding of double floats larger than a
1500 fixnum is correct. (reported by Peter Keller)
1501 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
1502 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
1504 * bug fix: redefining classes such that slots with custom allocation are
1505 added or removed works again.
1507 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
1508 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
1509 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
1510 MAKE-SOCKET-STREAM if using SERVE-EVENT.
1511 * enhancement: added support for socket keepalive timeout intervals
1512 and probe counts on Linux.
1513 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
1514 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
1515 * enhancement: added new toplevel options --quit and --non-interactive
1517 * enhancement: the Windows port of SBCL now builds and runs on Wine
1518 (thanks to Anton Kovalenko).
1519 * enhancement: more, and more correct, SSE instruction definitions on
1520 x86-64 (thanks to Alexander Gavrilov).
1521 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
1522 to help the processor execute spin loops, when applicable. Currently
1523 implemented for x86 and x86-64.
1524 * optimization: unsigned integer divisions by a constant are implemented
1525 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
1526 * optimization: improved type-derivation for LOAD-TIME-VALUE.
1527 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
1528 instructions. (lp#814688)
1529 * bug fix: COERCE to unfinalized extended sequence classes now works.
1530 (reported by Jan Moringen; lp#815155)
1531 * bug fix: a compiler error during typecheck generation, reported by Eric
1532 Marsden. (lp#816564)
1533 * bug fix: obsolete instance protocol fires when shared slots are added
1535 * bug fix: fixed-format floating point printing with scaling factors.
1537 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
1538 backtraces. (lp#818460)
1539 * bug fix: better backtraces for interrupted syscall frames on x86.
1541 * bug fix: SSE comparison instructions can be disassembled even when one
1542 operand is in memory. (lp#814702)
1543 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
1544 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
1545 type information associated with the VALUES form.
1546 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
1548 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
1549 first write (lp#561642).
1550 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
1551 * bug fix: bound propagation involving conversion of large bignums to
1552 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
1554 * bug fix: &REST to &MORE conversion still works in unsafe call to known
1555 functions; reported by Lutz Euler (lp#826459).
1556 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
1559 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
1560 * enhancement: errors from FD handlers now provide a restart to remove
1561 the offending handler.
1562 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
1564 * enhancement: location of user or system initialization file can now easily
1565 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
1566 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
1567 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
1568 the thunk, as a keyword argument, :arguments.
1569 * enhancement: constraint propagation is simplified (and sped up) when
1570 COMPILATION-SPEED > SPEED.
1571 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
1572 * enhancement: debugger understands &MORE arguments better.
1573 * optimization: extracting bits of a single-float on x86-64 has been
1574 optimized. (lp#555201)
1575 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
1576 when (> SPEED SPACE).
1577 * optimization: local call trampolines (x86 and x86-64) are emitted
1579 * optimization: implicit value cells for dynamic-extent closed-over bindings
1580 on x86 and x86-64 can hold unboxed values as well.
1581 * meta-optimization: improved compilation speed, especially for large
1582 functions. (lp#792363 and lp#394206)
1583 * bug fix: bound derivation for floating point operations is now more
1584 careful about rounding possibly closing open bounds. (lp#793771)
1585 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
1586 backwards incompatible change in 1.0.48.27)
1587 * bug fix: occasional debugger errors in when a type-error occured in a
1588 function with dynamic-extent &rest list.
1589 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
1590 boa-construtors can be used to initialized structure slots.
1591 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
1592 (lp#795705, regression)
1593 * bug fix: DIRECTORY works better on logical pathnames.
1594 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
1595 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
1596 * bug fix: the compiler no longer constant-folds NaNs in
1597 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
1598 * bug fix: FORMAT now handles floating point rounding correct, eg.
1599 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
1601 * bug fix: style warning during lambda-list introspection of generic
1602 functions with both optional and key argments.
1603 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
1604 folding. (lp#729765)
1605 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
1608 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
1609 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
1610 interrupts for its body.
1611 * enhancement: source locations are now available for files loaded as
1612 source, compile-time-too evaluation, and initialization files.
1613 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
1614 virtual source-file information, eg. overriding input-file of COMPILE-FILE
1615 when a temporary file is used for compilation.
1616 * enhancement: ASDF has been updated to version 2.015.3.
1617 * enhancement: backtraces involving frames from the default evaluator are
1619 * enhancement: RUN-PROGRAM works with user-defined binary input and output
1621 * enhancement: more informative compile-time warnings and runtime errors for
1622 type-errors detected at compile-time.
1623 * enhancement: deadlock detection for mutexes and spinlocks.
1624 * enhancement: dynamic-extent for &rest lists stack allocate only their
1625 spines, not their argumets. While portable code should not rely on this,
1626 particularly in combination with inlining, it should make dynamic-extent
1627 easier to use safely.
1628 * enhancement: SB-POSIX improvements:
1629 ** WNOHANG and WUNTRACED are exported.
1630 ** SYSCALL-ERROR now also provides the name of the failing system call.
1631 * enhancement: --script improvements:
1632 ** errors on standard input, output, and error streams are handled and
1633 cause scripts to exit silently, making them easier to use in shell
1635 ** backtraces from scripts now go to standard error instead of the
1636 terminal even if one is available.
1637 ** --script can be an argument, causing the script to be loaded from
1639 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
1640 strings to foreign memory.
1641 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
1642 a file, making it easier to understand heap dynamics.
1643 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
1644 allows the compiler to automatically elide rest-list allocation so long as
1645 the call sites are in functions that the compiler knows cannot escape.
1647 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
1648 especially in safe code when none of the required arguments have changed
1650 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
1651 uninterruptible, as well as blocking reads from socket streams created
1652 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
1653 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
1654 from the to-char if the from-char is not a dispatch-macro character.
1655 * bug fix: references to undefined variables in function calls that are
1656 optimized away now signal a runtime error. (lp#722734)
1657 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
1658 types from a function defined in the same file. (regression from
1660 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
1662 * bug fix: spurious errors during QUIT when standard streams were closed.
1664 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
1665 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
1666 years, is now no longer supported.
1667 * enhancement: read() and write() have been added to SB-POSIX.
1668 * enhancement: types of DEFSTRUCT constructors are proclaimed more
1669 accurately, allowing better typechecking of call-sites.
1670 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
1671 are no longer caught. (reverted to pre 1.0.34 behaviour)
1672 * optimization: slightly faster ISQRT. (lp#713343)
1673 * bug fix: better support for Solaris /bin/sh in sh-based tests.
1674 * bug fix: TRACE behaves better when attempting to trace undefined
1675 functions. (lp#740717)
1676 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
1677 to (FUNCALL #'(LAMBDA ...) ...).
1678 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
1679 a compile-time error. (lp#720382)
1680 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
1682 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
1683 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
1684 optimization. (regression from 1.0.45.18/1.0.46.15)
1685 * bug fix: package locks did not protects against compile-time side-effects
1686 of DEFUN. (lp#675584)
1687 * bug fix: --dynamic-space-size argument is validated more carefully.
1689 * bug fix: memory fault from printing a malformed simple-condition.
1691 * bug fix: redefining classes so that slot-definition classes change now
1692 engages the obsolete instance protocol. (lp#766271)
1693 * bug fix: constant improper lists could break source coverage recording.
1695 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
1696 could exhaust stack.
1698 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
1699 * bug fix: fix mach port rights leaks in mach exception handling code on
1700 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
1702 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
1703 * enhancement: redefinition warnings for macros from different files. (lp#434657)
1704 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
1705 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
1706 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
1707 processed using EVAL -- now the appropriate toplevel form is reported instead.
1708 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
1709 declarations. (lp#726331)
1710 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
1711 that NIL/NULL is excluded from the type.
1712 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
1714 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
1715 and its compatriots.
1716 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
1717 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
1718 stack-allocated values out of their dynamic-extent. (lp#310175)
1719 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
1720 x86-64 builds caused a type-error.
1721 * bug fix: calling COMPILE with something else than a lambda-expression as the
1722 second argument reports a more sensible error. (lp#718905)
1723 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
1724 are detected. (lp#520607)
1725 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
1727 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
1728 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
1729 methods. (regression from 1.0.45.18)
1730 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
1731 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
1732 * bug fix: several foreign functions accepting string also accepted NIL and
1733 consequently caused a memory fault at 0 now signal a type-error instead.
1735 * bug fix: under rare circumstances, constraint propagation could rewrite a
1736 variable reference to refer to a variable not in scope, causing an error
1737 during physical environment analysis when attempting to close over the
1738 variable. (lp#551227)
1739 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
1741 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
1742 * enhancement: largefile support on Solaris.
1743 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
1744 arguments (lp#710017)
1745 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
1746 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
1748 * optimization: ERROR and CERROR are approximately 5 times faster.
1749 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
1750 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
1751 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
1752 up instance creation in those cases.
1753 * optimization: arithmetic operations with multiple constant arguments in now
1754 have them reduced at compile-time. (lp#676414)
1755 * optimization: determining current character position on string-streams for
1756 pretty-printing was overly slow.
1757 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
1758 lifetime analysis to overwrite closed-over variables (lp#681092).
1759 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
1760 were not handled correctly (lp#713063).
1761 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
1763 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
1764 mistake. (lp#667297).
1765 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
1766 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
1767 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
1768 unintern the wrong symbol with the same name. (lp#693796)
1769 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
1770 making it possible to restore the initial table if it has been messed up.
1773 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
1774 * enhancement: ~/ and ~user/ are treated specially in pathnames.
1775 Refer to documentation for details.
1776 * enhancement: ASDF has been updated to version 2.010.
1777 * optimization: mutated closed-over variables that are only accessed by
1778 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
1779 declared to be DYNAMIC-EXTENT) are stored directly in their containing
1780 stack frame, rather than allocating a VALUE-CELL (lp#586103).
1781 * optimization: UNWIND-PROTECT cleanup functions are now declared
1783 * bug fix: backtracing function with &REST arguments now shows the full
1784 argument list. (lp#310173)
1785 * bug fix: return types for functions with complex lambda-lists are now
1786 derived properly (lp#384892)
1787 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
1788 long string arguments slowed the compiler down to a crawl.
1789 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
1790 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
1791 in the DEFMETHOD body.
1792 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
1793 messages, being instead replaced with the corresponding function name.
1794 * bug fix: don't derive overly complex unions of numeric types for arithmetic
1795 operators. (lp#309448)
1797 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
1798 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
1799 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
1800 * enhancement: ALLOCATION-INFORMATION also provides the page the object
1802 * enhancement: default dynamic-space size can be configured at build-time
1803 without touching source, using the --dynamic-space-size argument to make.sh.
1804 * enhancement: DESCRIBE recognizes symbols naming optimization policy
1805 qualities, and mentions ALWAYS-BOUND declarations.
1806 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
1808 * enhancement: ASDF has been updated to 2.009.
1809 * enhancement: the system detects known type-erros in calls better,
1810 signalling a full warning about violated proclaimed FTYPEs and violations
1811 of derived FTYPEs within the same file, including self-calls.
1812 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
1813 * optimization: constant-folding exploits numeric and character types, in
1814 addition member types.
1815 * optimization: numeric, character and member types that are inhabited by
1816 exactly one value are tested with EQL.
1817 * optimization: more conditional branches are eliminated during IR1.
1818 Branches are simplified before performing if/if-conversion, and simple
1819 equivalent branches (that only read the same constant or variable) are
1821 * improvements to the Windows port:
1822 ** change: canonical unparsing form for pathname namestrings now uses / as
1823 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
1824 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
1825 on Windows. (thanks to Kalyanov Dmitry)
1826 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
1828 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
1829 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
1830 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
1831 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
1833 * bug fix: interrupts arriving during CL:OPEN caused an error.
1834 * bug fix: overeager character buffering could cause input to block
1835 spuriously when reading from a pipe (lp#643686)
1836 * bug fix: more efficient timer expiry should avoid starvation on systems
1837 where number of SIGALRMs per second is restricted. (lp#375515)
1838 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
1839 * bug fix: compile-times no longer scale linearly with the size of
1840 quoted lists in source-code. (lp#654289)
1841 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
1842 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
1843 so badly. (lp#654485)
1844 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
1845 an error for eg. STRUCTURE. (lp#458015)
1846 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
1847 (lp#613871, thanks to Roman Marynchak)
1848 * bug fix: more reliable &REST list type derivation. (lp#655203)
1849 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
1850 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
1851 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
1852 also declared NOTINLINE. (lp#655581)
1853 * bug fix: the compiler could attempt to emit constant left shifts of
1854 greater value than n-word-bits. (lp#309063)
1855 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
1856 type information for the function being set. (lp#659220)
1857 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
1858 containing self-calls were recompiled with a new signature, and failed
1859 to warn when a self-call using the old signature was left in. (lp#655126)
1860 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
1861 :DEFAULT when the default external had character size other than 8 bits.
1863 * bug fix: derived types of functions in the same file were implicitly
1864 trusted, leading to potential heap corruption when those function were
1865 defined incompatibly. (lp#657499)
1866 * bug fix: existing ASDF source registries are ignored when building
1867 contribs (lp#659105)
1868 * bug fix: short-form DEFSETF checks that the second argument is a symbol
1869 (lp#655824, thanks to Roman Marynchak)
1870 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
1871 package-lock violation was detected. (lp#660752)
1872 * bug fix: the system can store different docstrings for a single function
1873 under different names. (lp#661631, regression from 1.0.29.24)
1874 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
1875 properly. (lp#384801)
1876 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
1877 of specified length could confuse the type derivation in unsafe code.
1879 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1880 fork with multiple Lisp threads running is made on every platform,
1881 not just Darwin. (lp#451111)
1882 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1883 around when core was saved, which could cause undefined behaviour when the
1885 * bug fix: Allow UNTRACE of functions that are no longer defined
1886 (lp#667657, thanks to Attila Lendvai)
1887 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1888 compile-time warning (lp#664373, thanks to Stas Boukarev)
1890 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1891 * incompatible change: FD-STREAMS no longer participate in the serve-event
1892 event-loop by default. (lp#316072)
1893 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1894 affects streams from CL:OPEN.
1895 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1896 default, but this is liable to change: applications needing serve-event
1897 for socket streams should explicitly request it using :SERVE-EVENTS T
1899 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1901 * enhancement: CLOS effective method functions and defclass slot typechecking
1902 function now have debug names for use in backtraces and profiles.
1903 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1905 * enhancement: symbols are printed using fully qualified names in several
1906 error and warning messages which are often associated with package
1907 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1908 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1909 thanks to Andrew Golding)
1910 * bug fix: reading /proc files on Linux works. (lp#425199)
1911 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1913 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1914 breaking code that tried to write the value of a printer control variable.
1915 (lp#581564, thanks to Stas Boukarev)
1916 * bug fix: WRITE compiler macro did not handle output stream designators
1917 correctly. (lp#598374, thanks to Stas Boukarev)
1918 * bug fix: better availability of names of foreign functions in backtraces
1919 on Linux. (lp#626962, thanks to Stas Boukarev)
1920 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1921 lp#627581, thanks to Josh Elsasser and Jim Wise)
1922 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1923 thanks to Josh Elsasser)
1924 * bug fix: using aliases for builtin classes as defmethod specializers
1925 without adding DEFTYPEs for them works. (lp#618387)
1926 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1928 * bug fix: legally dynamic-extent lists and vectors used as
1929 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1930 * bug fix: inline-expansion creating references to dead lambda-variables
1931 (lp#454681, thanks to Alexey Dejneka)
1932 * bug fix: better error message for bogus numerical arguments to RANDOM.
1933 (lp#598986, thanks to Stas Boukarev)
1934 * bug fix: the compiler occasionally inlined references from incompatible
1935 environments occurs. (lp#308951)
1936 * bug fix: the compiler threw an error when trying to compile a local
1937 function (labels or flet) known to take a specialized complex argument.
1938 (not in launchpad, reported by sykopomp in #lispgames)
1939 * bug fix: package-locks failed to protect against compile-time effects of
1940 DEFUN when the symbol previously had a macro definition. (lp#576637)
1941 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1942 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1943 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1944 * bug fix: evaluation in debugger REPL works using the global context when
1945 in frames that do not have sufficient debug information.
1946 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1948 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1950 * bug fix: interrupt taking longer than the requested period caused SLEEP
1951 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1953 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1955 ** Cross-compilation host is now specified to make.sh using
1956 command-line argument --xc-host=<command> instead of a positional
1957 argument. (thanks to Daniel Herring)
1958 ** Install location can be specified to make.sh using command-line
1959 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1960 * optimization: The default implementation of
1961 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1962 * enhancement: Explicit memory barrier operations are now available for use
1963 by multithreaded code. See documentation for details.
1964 * enhancement: Experimental support for threading on Linux/PPC.
1965 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1966 * bug fix: EXPT signals an error if first argument is a zero and second
1967 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1968 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1969 (lp#576594, thanks to Roman Marynchak)
1970 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1971 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1973 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1974 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1975 cached, leading to many fewer expensive calls to
1976 COMPUTE-APPLICABLE-METHODS.
1977 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1978 CLASS argument, search for and call an appropriate optimized ctor function
1980 * bug fix: WRITE always returns the correct value.
1982 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1983 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1984 * bug fix: Name conflicts between symbols passed as arguments to a single
1985 call to IMPORT no longer add multiple symbols with the same name to the
1986 package (detectable via DO-SYMBOLS).
1987 * bug fix: support building without the dlshim on darwin x86 and x86-64
1989 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1991 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1992 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1994 * bug fix: linkage-table entries on PPC now no longer overflow their
1995 space allocation (potentially causing crashes if they are written out
1997 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1998 platforms, preventing the GC from seeing stale pointers on the control
1999 stack in subsequent GCs (which would, and does, break invariants).
2000 * bug fix: 32-bit unicode external formats now work on big-endian systems.
2001 * bug fix: Literal characters with code points greater than about 32767
2002 now work on PPC UNICODE builds.
2003 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
2004 high order bits are explicitly cleared out. In some contrived situations,
2005 this could lead to wrong results in mixed real/complex float arithmetic.
2006 * bug fix: Fix function/macro redefinition warnings when building with
2007 clisp. (lp#576787, thanks to Josh Elsasser)
2008 * new platform: experimental support for ppc/openbsd (thanks to Josh
2010 * bug fix: Floating-point traps now work on ppc/linux.
2012 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
2013 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
2014 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
2015 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
2016 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
2017 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
2018 SB-THREAD:GRAB-MUTEX.
2019 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
2020 contain additional data structures and tools for concurrent programming;
2021 at the moment it contains a lock-free queue, and a lock-free mailbox
2023 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
2024 GET-MUTEX but takes &key rather than &optional parameters. Also added
2025 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
2027 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
2028 SB-THREAD:WAIT-ON-SEMAPHORE.
2029 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
2031 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
2032 conditions to defer the deadline for forever.
2033 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
2035 * enhancement: errors from NO-APPLICABLE-METHOD and
2036 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
2037 generic function call.
2038 * enhancement: SB-BSD-SOCKET improvements
2039 ** sockets and socket streams now have a more informative printed
2040 representation based on the corresponding SOCKET-NAME and
2042 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
2044 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
2045 CL:CLOSE when appropriate, and no longer disassociates the stream
2046 from the socket if close failed. (lp#543951)
2047 * improvements to the instrumenting profiler
2048 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
2049 ** optimization: counters no longer use locks for the overflow mode.
2050 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
2051 incurred an off-by-one miscount.
2052 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
2053 * enhancement: improved DEFMETHOD pretty-printing.
2054 * enhancement: perform range reduction when arguments are too large for
2055 x87's transcendentals (instead of returning 0). (lp#327192)
2056 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
2057 some of CL-PPCRE's macros. (lp#570079)
2058 * enhancement: our machine code is slightly less hostile to valgrind on
2060 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
2061 to Robert Swindells and Aleksej Saushev)
2062 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
2063 * bug fix: a rare case of startup-time page table corruption.
2064 * bug fix: a semaphore with multiple waiters and some of them unwinding due
2065 to timeouts could be left in an inconsistent state.
2066 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
2067 * bug fix: misoptimization of multiplication by one in
2068 (SB-C::FLOAT-ACCURACY 0) policies.
2069 * bug fix: miscounts in SB-PROFILE.
2070 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
2071 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
2072 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
2073 up itself" (March 2010) for further details.
2074 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
2075 against length of the list if the element is found before the specified
2076 END is reached. (thanks to Alec Berryman, lp#554385)
2077 * bug fix: errors signalled during package graph modification no longer
2078 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
2079 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
2080 :SB-DOC feature. (lp#552564)
2081 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
2082 * bug fix: more robust runtime executable path detection. (lp#375549)
2083 * bug fix: GCD always returns positive values. (lp#413680)
2084 * bug fix: Converting division to multiplication by reciprocal handles
2086 * bug fix: We were too eager in eliding range reduction tests on x87.
2087 The maximal magnitude is 2^63, not 2^64.
2088 * bug fix: Transforms for TRUNCATE don't die when the result is completely
2090 * bug fix: Maybe restore buildability on Alpha.
2091 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
2093 * bug fix: RANDOM-STATE can be printed readably again.
2094 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
2095 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
2096 types) could result in type mismatches during compilation.
2098 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
2099 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
2100 stack frame thrown from.
2101 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
2102 compiler optimization qualities inside dynamic extent of its body.
2103 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
2104 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
2106 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
2107 constraint propgation, allowing better compilation eg. when used to
2108 access structures with WITH-SLOTS. (lp#520366)
2109 * optimization: the compiler is now more aware of the type of the underlying
2110 storage vector for multidimensional simple arrays resulting in better code
2111 for accessing such arrays.
2112 * optimization: passing NIL as the environment argument to TYPEP no longer
2113 inhibits optimizing it. (lp#309788)
2114 * optimization: more efficient register usage when handling single-float
2115 arguments on x86-64. (thanks to Lutz Euler)
2116 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
2117 pre-allocated temporary vectors. (lp#496249)
2118 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
2119 in :INITIAL-CONTENTS. (lp#523612)
2120 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
2121 functions. (lp#524707)
2122 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
2123 WITH-SLOTS usages during compilation.
2124 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
2125 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
2126 all x86oid platforms with :UD2-BREAKPOINTS target feature.
2127 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
2128 instruction (tested on x86oid linux with ud2-breakpoints).
2129 * bug fix: slam.sh now works on win32.
2130 * bug fix: better differences of numeric types. (lp#309124)
2131 * bug fix: arrays declared intersection and union types can have their
2132 upgraded element type derived. (lp#316078)
2133 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
2134 threads started during profiling. (lp#472499)
2135 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
2137 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
2138 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
2139 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
2140 values instead of signaling an error. (lp#309093)
2141 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
2143 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
2144 declarations (lp#497321)
2145 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
2146 and failed to detect circular lists (lp#452008)
2147 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
2149 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
2150 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
2151 due to it, so that handlers can run.
2152 * bug fix: reparsing undefined types if they have become defined since
2153 parsing. (lp#309128)
2154 * bug fix: missing &REST type in a proclamation for a function with both
2155 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
2156 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
2157 expanded calls (lp#542174)
2158 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
2159 than just at toplevel form.
2161 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
2162 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
2163 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
2164 but work on type specifiers.
2165 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
2166 to name a type specifier.
2167 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
2168 specifier is valid where "valid" basically means "would be accepted as
2169 second argument of TYPEP".
2170 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
2171 returns the function's declared, or derived FTYPE.
2172 * new feature: SB-POSIX now supports accessing the d_ino member of
2173 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
2174 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
2175 provide for seeding a RANDOM-STATE object with user-provided data or
2176 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
2177 attempt to initialize the returned state from the operating system's
2178 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
2179 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
2180 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
2181 * bug fix: Fix grammar and style issues for the docstrings of
2182 printer-related variables and functions. (Thanks to mon_key; launchpad
2184 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
2186 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
2187 in a row even though a handler defered the deadline long into the
2189 * bug fix: A deadline handler was run without interrupts enabled for a
2190 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
2191 in infinitely spinning, non-killable threads.
2192 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
2193 before reaching the erring stack frame.
2194 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
2195 real power. (launchpad bug lp#525949)
2196 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
2197 GENCGC platforms. (launchpad bug lp#529014)
2198 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
2199 (launchpad bug lp#525916)
2200 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
2201 (Thanks to Robert Goldman)
2203 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
2204 * optimization: ROUND with a single single-float or double-float argument
2205 is properly inlined when possible.
2206 * optimization: Slightly better code is generated for integer<->float
2207 conversions and for single-float<->double-float conversions on x86-64.
2208 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
2209 code for 32-bit and 64-bit rotations on x86-64.
2210 * bug fix: The install script changes the ownership of directories as well
2211 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
2212 launchpad bug lp#508485)
2213 * bug fix: TRUNCATE with a single single-float or double-float argument is
2214 properly inlined when possible. (launchpad bug lp#489388)
2215 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
2216 no longer causes a compiler error on x86 and ppc.
2217 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
2218 always relative to *READTABLE* rather than the passed argument.
2220 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
2221 * minor incompatible change: threading support is now enabled by default
2223 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
2225 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
2226 are now caught and reported just like errors during macroexpansion.
2227 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
2228 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
2229 * enhancement: ASDF systems can now depends on SB-QUEUE.
2230 * fixes and improvements related to Unicode and external formats:
2231 ** bug fix: error handling and restart usage in the ucs-2 external format
2233 ** there is now an implementation of the ucs-4 external format.
2234 ** the utf-16 and utf-32 external formats are supported.
2235 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
2236 in the environment. setenv() and unsetenv() are also provided. (reported by
2237 Fare Rideau; launchpad bug lp#460455)
2238 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
2239 loading. This ensures sensible errors for .FASL files from other
2240 implementations on case-insensitive filesystems. (reported by Willem
2241 Broekema; launchpad bug lp#489417)
2242 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
2243 Willem Broekema; launchpad bug lp#489698).
2244 * bug fix: some minor code rearrangements to reenable warning-free building
2245 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
2246 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
2248 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
2251 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
2252 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
2253 * improvement: support O_LARGEFILE access to files larger than 2GB on
2254 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
2255 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
2256 definitions for methods specializing on the passed class itself.
2257 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
2258 definitions for methods specializing on the passed class itself, or on
2260 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
2261 about itself during the build (e.g. for M-? in Slime), if this flag is
2262 enabled in customize-target-features.lisp. This will increase the core
2263 size by about 5-6mb, though, so it's mostly interesting to SBCL
2265 * new feature: various GENCGC tuning parameters have been experimentally
2266 documented and exported from SB-EXT. See documentation for details.
2267 * fixes and improvements related to Unicode and external formats:
2268 ** the Unicode character database has been upgraded to the
2269 Unicode 5.2 standard, giving names and properties to a number of new
2270 characters, and providing a few extra characters with case
2272 ** improvement: restarts for providing replacement input/output on coding
2273 errors for fd-stream external formats.
2274 ** improvement: where :<encoding> is a keyword corresponding to an
2275 external format the system supports, it is now possible to specify
2276 (:<encoding> :replacement <character>) as an external format which will
2277 automatically substitute <character> on encoding or decoding errors for
2278 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
2280 ** improvement: the file streams underlying the standard streams (such as
2281 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
2282 which uses the replacement mechanism to handle encoding errors,
2283 preventing various infinite error chains and unrecoverable I/O
2285 ** minor incompatible change: the utf-8 external format now correctly
2286 refuses to encode Lisp characters in the surrogate range (char-codes
2287 between #xd800 and #xdfff).
2288 ** fix a typo preventing conversion of strings into octet vectors
2289 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
2291 ** fix a bug in the octet multibyte handling of decoding errors and the
2292 USE-VALUE restart. (launchpad bug lp#314939)
2293 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
2294 restart on fd-stream decoding errors.
2295 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
2296 error is near the end of file.
2297 ** fix a double-error case in unibyte octet conversions, when the first
2298 use of USE-VALUE is ignored.
2299 ** fix bugs in handling of undefined code points in unibyte encodings.
2300 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
2301 streams after an UNREAD-CHAR.
2302 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
2303 object is allocated in a boxed region of dynamic space.
2304 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
2305 fork with multiple Lisp threads running is made, instead of going
2306 ahead with unpredictable consequences. (reported by Leslie Polzer)
2307 * bug fix: uses of slot accessors on specialized method parameters within
2308 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
2309 error while finalizing the class. This fix may cause classes with slot
2310 accessors to be finalized later than previously. (reported by Lars Rune
2311 Nøstdal; launchpad bug lp#473699)
2312 * bug fix: restore buildability on the MIPS platform. (regression from
2313 1.0.30.38, reported by Samium Gromoff)
2314 * bug fix: inspecting closures is less likely to fail with a type error.
2315 * bug fix: no timer starvation when setting the system clock back.
2316 (launchpad bug lp#460283)
2317 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
2318 standard pprint dispatch table as specified by CLHS.
2319 * bug fix: give CLISP a hint about a type declaration to enable it to build
2320 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
2322 * bug fix: correctly dump literal objects in defaulting forms of arglists.
2323 (reported by Attila Lendvai; launchpad bug lp#310132)
2324 * bug fix: distinguish in type specifiers between arrays that might be
2325 complex and arrays that are definitely complex. (launchpad bug lp#309129)
2326 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
2327 type. (reported by Levente Mészáros; launchpad bug lp#485972)
2328 * bug fix: setting the value of a symbol-macro within a method in the
2329 presence of type declarations works properly again. (reported by Iban
2330 Hatchondo; launchpad bug lp#485019)
2332 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
2333 * optimization: faster FIND and POSITION on strings of unknown element type
2334 in high SPEED policies. (thanks to Karol Swietlicki)
2335 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
2337 * improvement: better error signalling for bogus parameter specializer names
2338 in DEFMETHOD forms (reported by Pluijzer)
2339 * bug fix: DELETE-FILE once again works on logical pathnames (regression
2341 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
2343 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
2344 removes previous default initargs (reported by Lars Rune Nøstdal and
2346 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
2347 lambda-lists. (reported by Peter Seibel)
2348 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
2349 correctly when starting from an executable core without saved runtime
2350 options (reported by Faré Rideau, thanks to Zach Beane)
2351 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
2352 an optimization note instead. (reported by Martin Cracauer)
2353 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
2354 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
2355 new process group if it doesn't need to share stdin with the sbcl
2356 process. (thanks to Leslie Polzer)
2357 * bug fix: SATISFIES could be misoptimized to refer to a local function.
2358 (reported by Stanislaw Halik)
2360 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
2361 * improvement: stack allocation is should now be possible in all nested
2362 inlining cases: failure to stack allocate when equivalent code is manually
2363 open coded is now considered a bug.
2364 * improvements related to Unicode:
2365 ** the Unicode character database has been upgraded to the
2366 Unicode 5.1 standard, giving names and properties to a number of new
2367 characters, and providing a few extra characters with case
2369 ** the system now recognizes and produces names for Unicode Hangul
2370 syllable characters.
2371 ** the EBCDIC-US external-format is now supported for octet operations
2372 (as well as for stream operations).
2373 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
2374 be used to output toplevel compile-time effects into a separate .CFASL
2376 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
2377 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
2379 * optimization: TRUNCATE on known single- and double-floats is upto 25%
2381 * optimization: division of floating point numbers by constants uses
2382 multiplication by reciprocal when an exact reciprocal exists.
2383 * optimization: multiplication of single- and double-floats floats by
2384 constant two has been optimized.
2385 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
2386 sufficient type information is available. (thanks to Leslie Polzer)
2387 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
2388 known structure objects are as efficient as defstruct generated accessors.
2389 * optimization: unused vector creation can now be optimized away.
2390 * improvement: ASDF systems can now depends on SB-INTROSPECT.
2391 * improvement: a STYLE-WARNING is signalled when a generic function
2392 clobbers an earlier FTYPE proclamation.
2393 * improvement: the compiler is able to track the effective type of
2394 generic function across method addition and removal even in the
2395 absence of an explicit DEFGENERIC.
2396 * improvement: DESCRIBE now reports on symbols naming undefined
2397 but assumed or declared function as well.
2398 * improvement: recompilation of systems using SB-GROVEL now works
2399 (thanks to Leslie Polzer)
2400 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
2401 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
2403 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
2404 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
2405 well as user defined declaration names.
2406 ** VARIABLE-INFORMATION is now aware of alien variables.
2407 * improvement: improved address space layout on OpenBSD (thanks to Josh
2409 * improvement: pretty-printing of various Lisp forms has been improved
2410 (thanks to Tobias Rittweiler)
2411 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
2412 unused were deleted in safe code. (reported by John Fremlin)
2413 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
2415 * bug fix: some out-of-line array predicates were missing (reported by
2417 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
2419 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
2420 (thanks to Larry D'Anna)
2421 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
2422 as well. (reported by Josh Elsasser)
2423 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
2424 leading to possible attempts to delete the same file twice. See docstring
2425 on DELETE-FILE for details. (reported by John Fremlin)
2426 * bug fix: DELETE-FILE once again deletes the file named by the pathname
2427 designator argument, rather than its truename. (reported by Luis
2429 * bug fix: the low-level debugger had 32-bit assumptions and was missing
2430 information about some array types. (thanks to Luis Oliveira)
2431 * bug fix: moderately complex combinations of inline expansions could
2432 be miscompiled if the result was declared to be dynamic extent.
2433 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
2434 form (+ <variable> <integer>) were miscompiled under certain
2436 * bug fix: in some cases no compiler note about failure to stack allocate
2437 was emitted, even if the objects were in fact heap allocated.
2438 * bug fix: minor violation of "otherwise inaccessible" rule for stack
2439 allocation could cause objects users might reasonably expect to
2440 be heap allocated to be stack allocated.
2441 * bug fix: DESCRIBE signalled an error for generic functions under
2442 certain circumstances. (thanks to Leslie Polzer)
2443 * bug fix: Fixed spelling of an error message.
2445 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
2446 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
2447 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
2448 of SB-THREAD:THREAD-ERROR-THREAD.
2449 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
2450 * new feature: docstrings for local and anonymous functions are no longer
2451 discarded. (thanks to Leslie Polzer)
2452 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
2453 values in other threads.
2454 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
2455 about object allocation.
2456 * optimization: division of a real float by a complex float is implemented
2457 with a specialised code sequence.
2458 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
2459 keywords is an order of magnitude faster.
2460 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
2461 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
2462 methods, and similarly for non-standard metaclass classes as long as there
2463 are no methods additional on MAKE-INSTANCE.
2464 * optimization: more efficient type-checks for FIXNUMs when the value
2465 is known to be a signed word on x86 and x86-64.
2466 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
2467 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
2469 * optimization: compiler is smarter about delegating argument type checks to
2471 * optimization: several character functions are now compiled somewhat more
2472 efficiently. (reported by Lynn Quam)
2473 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
2474 * improvement: less unsafe constant folding in floating point arithmetic,
2475 especially for mixed complex/real -float operations.
2476 * optimization: constant double and single floats are stored in native
2477 unboxed format on x86[-64].
2478 * optimization: smarter code for arithmetic operations with constant floats,
2479 complex floats, or integers on x86[-64].
2480 * optimization: smarter code for conjugate/multiplication of float complexes
2481 and abs/negate of floats on x86-64.
2482 * optimization: more efficient complex float and real float operations on
2484 * improvement: complex float division is slightly more stable.
2485 * improvement: DESCRIBE output has been reworked to be easier to read and
2486 contains more pertinent information.
2487 * improvement: failure to provide requested stack allocation compiler notes
2488 provided in all cases (requested stack allocation not happening without a
2489 note being issued is now considered a bug.)
2490 * bug fix: SB-POSIX exports the documented types and functions
2491 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
2492 types. (reported by "abhi")
2493 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
2494 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
2495 (thanks to Paul Khuong)
2496 * bug fix: looping around HANDLER-CASE could silently consume stack space
2497 on each iteration. (reported by "foobar")
2498 * bug fix: better error signalling when calls to functions seeking elements
2499 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
2500 (reported by Tobias Rittweiler)
2501 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
2502 directory components now works as it used to. (various prolems reported by
2503 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
2504 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
2505 (reported by Elliot Slaughter, thanks to Stas Boukarev)
2506 * bug fix: bogus undefined variable warnings from fopcompiled references to
2507 global variables. (thanks to Lars Rune Nøstdal)
2508 * bug fix: foreign function names should now appear in backtraces on
2509 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
2510 * bug fix: SETF compiler macro documentation strings are not discarded
2512 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
2513 (thanks to Alex Plotnick)
2514 * bug fix: SLEEP accepts large integer arguments, truncating them to
2515 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
2516 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
2517 * bug fix: compiler notes for expensive slot type checks could be emitted
2518 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
2520 changes in sbcl-1.0.29 relative to 1.0.28:
2521 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
2522 https://bugs.launchpad.net/sbcl
2523 Bugs can be reported directly there, or by sending email to
2524 sbcl-bugs@lists.sourceforge.net
2525 (no subscription required.)
2526 * minor incompatible change: under weak type checking policy integer
2527 types are weakened less aggressively.
2528 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
2529 allowed to return, which causes SBCL to quit with exit status 0. Previously
2530 if the function returned with a small integer return value, that value
2531 was accidentally reused as the exit status.
2532 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
2533 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
2534 :HASH-FUNCTION argument. Refer to user manual for details.
2535 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
2537 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
2538 microseconds since the Unix epoch on all platforms.
2539 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
2540 allows the compiler to safely elide boundedness checks for special
2542 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
2543 the symbol, prohibits both lexical and dynamic binding. This is mainly an
2544 efficiency measure for threaded platforms, but also valueable in
2546 * new feature: UNC pathnames are now understood by the system on Windows.
2547 * optimization: the compiler uses a specialized version of FILL when the
2548 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
2550 * optimization: accesses to potentially non-simple arrays where element type
2551 is known are 50% faster.
2552 * optimization: compiler now generates faster array typechecking code.
2553 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
2555 * optimization: multidimensional array accesses in the absence of type
2556 information regarding array rank are approximately 10% faster due to
2557 open coding of ARRAY-RANK.
2558 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
2559 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
2561 * optimization: result of call to VECTOR can now be stack allocated.
2562 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
2563 as long as the resulting array is one-dimensional and has a known
2564 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
2565 length of the list matches the known length of the vector does not
2566 allocate the list as an intermediate step. Ditto for VECTOR and simple
2568 * optimization: MAKE-ARRAY can now stack allocate in the presence of
2569 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
2570 known element type, and is known to be simple and one dimensional.
2571 * improvement: SBCL now emits a compiler note where stack allocation was
2572 requested but could not be provided (not in all cases, unfortunately)
2573 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
2574 * improvement: pretty-printing loop has been implemented properly. (thanks
2575 to Tobias Rittweiler)
2576 * documentation: CLOS slot typechecing policy has been documented.
2577 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
2578 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
2579 pointer, leading to memory faults. (thanks to Bart Botta)
2580 * bug fix: better floating point exception handling on x86/OpenBSD.
2581 (thanks to Josh Elsasser)
2582 * bug fix: exit status from QUIT when called under --script was lost
2583 (reported by Hubert Kauker)
2584 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
2585 same implementation of FILL to initialize the array, even if a more
2586 efficient one was available (reported by Stas Boukarev, thanks to
2588 * bug fix: potential miscompilation of array stack allocation on x86 and
2589 x86-64. (reported by Time Tossavainen)
2590 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
2591 result in their subforms being treated as top level forms. (reported by
2593 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
2594 than a machine register could leave garbage in the high bits of the
2595 result register (bug 316325).
2596 * bug fix: disable address space randomization Linux/x86-64 as well,
2597 not just x86-64. (reported by Ken Olum)
2598 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
2599 generate incorrect code.
2600 * bug fix: #201; type inference for CONS and ARRAY types could derive
2601 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
2602 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
2603 could not be assigned to or bound with PROGV. (reported by Lorenz
2605 * bug fix: the value of CL:- in the inspector was the previous expression
2606 evaluated rather than the expression being evaluated.
2607 * bug fix: constants can no longer be locally declared special.
2608 * bug fix: signals delivered to threads started from foreign land (read:
2609 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
2610 thread by blocking all signals and resignalling.
2611 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
2612 from :INITFORM, if any.
2614 changes in sbcl-1.0.28 relative to 1.0.27:
2615 * a number of bugs in cross-compilation have been fixed, with the ultimate
2616 result that building under (at least) clisp should be much more reliable.
2617 * minor incompatible changes: echo-streams now propagate unread-char to the
2618 underlying input stream, and no longer permit unreading more than one
2620 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
2621 frames, allowing for instance more reliable backtraces.
2622 * improvement: the debugger REPL can now reference lexical variables
2623 by name directly for code compiled with (DEBUG 3).
2624 * improvement: errors from malformed declarations now have better source
2625 paths associated with them. (thanks to Tobias Rittweiler)
2626 * optimization: faster local calls on x86/x86-64
2627 * bug fix: some error messages for out-of-bound array indexes confused the
2628 index and the bound. (thanks to Stas Boukarev)
2629 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
2631 * bug fix: running regressions tests in shells without OSTYPE set now works.
2632 (reported by Harald Hanche-Olsen)
2633 * bug fix: more robust static space exhaustion signalling from
2634 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
2635 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
2636 docstring away instead of storing it under names such as (LAMBDA (X)).
2637 (reported by Leslie Polzer)
2638 * bug fix: timers could go off in the wrong order, be delayed indefinitely
2639 (thanks to Ole Arndt for the patch)
2640 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
2641 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
2642 potentially-invalid effective methods in its cache.
2643 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
2644 instances as well (thanks to Paul Khuong)
2645 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
2646 SB-POSIX:WAITPID and their C equivalents.
2647 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
2649 changes in sbcl-1.0.27 relative to 1.0.26:
2650 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
2651 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
2652 * improvement: the system either recovers from stack exhaustion or dies
2653 properly as opposed to leaving the user uncertain of whether the handler
2654 trampled on some random memory next to the stack or having to rely on
2655 --lose-on-corruption (which is still a good idea to use in production
2656 because stack exhaustion can happen in signal handlers which will likely
2658 * bug fix: fix gc related interrupt handling bug on ppc (regression from
2659 1.0.25.37, reported by Harald Hanche-Olsen)
2660 * bug fix: work around signal delivery bug in darwin (regression from
2661 1.0.25.44, reported by Sidney Markowitz)
2662 * bug fix: fix ERROR leaking memory (reported by David Thompson)
2664 changes in sbcl-1.0.26 relative to 1.0.25:
2665 * incompatible change: an interruption (be it a function passed to
2666 INTERRUPT-THREAD or a timer function) runs in an environment where
2667 interrupts can be enabled. The interruption can use
2668 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
2669 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
2670 potentially running out of stack. Keep in mind that in the absence
2671 of WITHOUT-INTERRUPTS some potentially blocking operation such as
2672 acquiring a lock can enable interrupts.
2673 * incompatible change: GC-OFF and GC-ON are removed, as they were
2674 always unsafe. Use WITHOUT-GCING instead.
2675 * new feature: runtime option --disable-ldb
2676 * new feature: runtime option --lose-on-corruption to die at the
2677 slightest hint of possibly non-recoverable errors: running out of
2678 memory, stack, alien stack, binding stack, encountering a memory
2679 fault, etc. In the absence of --lose-on-corruption a warning is
2681 * enhancement: detect binding stack exhaustion
2682 * enhancement: detect alien stack exhaustion on x86/x86-64
2683 * improvement: generally more stable and reliable interrupt handling
2684 * improvement: there is a per thread interruption queue,
2685 interruptions are executed in order of arrival
2686 * improvement: a repeating timer reschedules itself when the it has
2687 finished, but expiration times are spaced equally. If an
2688 expiration time is in the past it will trigger after a short grace
2689 period that may give a chance to other things to run.
2690 * optimization: slightly faster gc on multithreaded builds
2691 * optimization: faster WITHOUT-GCING
2692 * bug fix: when JOIN-THREAD signals an error, do it when not holding
2693 important locks so that the debugger/handler doesn't produce
2694 recursive errors or deadlock.
2695 * bug fix: real-time signals are not used anymore, so no more
2696 hanging when the system wide real-time signal queue gets full.
2697 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
2699 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
2700 * bug fix: fix random memory faults related to interrupts on alpha
2701 * bug fix: fix random memory faults related to interrupts on sparc
2702 * bug fix: fix deadlocks related to starting threads
2703 * bug fix: fix deadlines on locks on futex platforms
2704 * bug fix: restore errno in signal handlers
2705 * bug fix: fix deadlocks related to hash tables
2706 * bug fix: fix deadlocks in pcl
2708 changes in sbcl-1.0.25 relative to 1.0.24:
2709 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
2710 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
2711 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
2712 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
2713 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
2714 better name and does not return values so stale on multiprocessor systems.
2715 Also, HOLDING-MUTEX-P was added for about the only sane usage of
2717 * improvement: unithread builds keep track of MUTEX-VALUE.
2718 * improvement: reading from a TWO-WAY-STREAM does not touch the output
2719 stream anymore making it thread safe to have a concurrent reader and
2720 a writer, for instance, in a pipe.
2721 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
2722 arguments, making compiler-macros for SETF-functions able to inspect
2723 their constant arguments.
2724 * improvement: COMPILE-FILE reports times with millisecond accuracy
2725 (thanks to Luis Oliveira)
2726 * optimization: CHAR-CODE type derivation has been improved, making
2727 TYPEP elimination on subtypes of CHARACTER work better. (reported
2728 by Tobias Rittweiler, patch by Paul Khuong)
2729 * bug fix: setting alien structure fields of type struct by value now
2730 computes the right offset for the memory copy.
2731 * bug fix: compilation problem involving inlined calls to aliens with
2732 result type VOID. (reported by Ken Olum)
2733 * bug fix: #235a; sequential inline expasion in different policies no
2734 longer reuses the functional from the previous expansion site.
2735 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
2736 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
2737 * bug fix: named ENUMs in multiply-referenced alien record types no longer
2738 cause an implied type redefinition. Regression from 1.0.21.29.
2739 * bug fix: sign-extension of small signed return values now works with C
2740 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
2741 * improvements to the Windows port:
2742 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
2743 Westfold, thanks to Rudi Schlatte)
2745 changes in sbcl-1.0.24 relative to 1.0.23:
2746 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
2747 vector of a multidimensional SIMPLE-ARRAY.
2748 * new feature: the system now signals a continuable error if standard
2749 readtable modification is attempted. (thanks to Tobias Rittweiler)
2750 * new feature: DIRECTORY has been extended with a non-standard keyword
2751 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
2752 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
2753 has been robustified and documented better. (thanks to Robert Goldman)
2754 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
2755 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
2756 * tradeoff: constant FORMAT control strings are now compiled unless
2757 SPACE > SPEED (previously only when SPEED > SPACE.)
2758 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
2760 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
2762 * bug fix: lexical type declarations are now correctly reported by
2763 SB-CLTL2. (reported by Larry D'Anna)
2764 * bug fix: STRING-TO-OCTETS did not handle :START properly when
2765 using UTF-8 as external format. (thanks to Luis Oliveira)
2766 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
2767 are signalled correctly. (thanks to Stas Boukarev)
2768 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
2769 designator. (thanks to Tobias Rittweiler)
2770 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
2771 designator, and returns T instead of the function. (thanks to
2773 * bug fix: direct superclasses of STANDARD-CLASS and
2774 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
2775 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
2776 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
2777 when no class with the named slot yet exists no longer causes a
2778 compile-time style-warning.
2779 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
2780 in safe code. (reported by Didier Verna)
2781 * bug fix: #430; nested structure constructors can stack allocate.
2782 * bug fix: on some 64-bit platforms dynamic space size was truncated
2783 to #xffff0000 bytes. (reported by Benjamin Lambert)
2784 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
2785 REPL unusable. (reported by Daniel Herring)
2786 * bug fix: return values of READ-SEQUENCE did not take :START into
2787 account on file streams, regressions since 1.0.12.22. (reported by
2788 Thomas Russ, patch by Paul Khuong)
2789 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
2790 method specializer used to confuse permuation vector optimization.
2791 * bug fix: system inserted bogus implicit type declarations for local
2792 special variables in DEFMETHOD bodies.
2793 * bug fix: #354; duplicated frames in backtraces due to
2794 non-tail-call-optimized XEPs to functions with return type NIL
2796 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
2797 initializes structure object slots according to DEFSTRUCT initforms,
2798 and DEFSTRUCT forms :INCLUDEind structure classes defined using
2799 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
2800 (reported by Bruno Haible and Stephen Wilson)
2801 * bug fix: #395; fill-pointer output streams used now support
2802 element-type BASE-CHAR as well.
2803 * bug fix: compiler error when attempting to derive return value of
2804 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
2806 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
2808 * bug fix: Mac OS X binaries should now be portable between Leopard
2811 changes in sbcl-1.0.23 relative to 1.0.22:
2812 * enhancement: when disassembling method functions, disassembly
2813 for the associated fast function is also produced.
2814 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
2816 * optimization: printing with *PRINT-PRETTY* true is now more
2817 efficient as long as the object being printed doesn't require
2818 special handling by the pretty printer.
2819 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
2820 now interact correctly with type declarations.
2821 * partial bug fix: PCL detects infinite recursion during wrapper
2822 validation. (thanks to Attila Lendvai)
2823 * bug fix: #426; nested function calls are inlined properly.
2824 Previously if FOO was an inline function, in calls of the form
2825 (FOO (FOO ...)) the outer call was not inlined.
2826 * bug fix: long long arguments passed in registers to alien
2827 functions on PowerPC Linux and NetBSD are now handled correctly
2828 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
2830 changes in sbcl-1.0.22 relative to 1.0.21:
2831 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
2832 for the shared object in the current directory, but passes the native
2833 namestring of the designated pathname to the operation system's shared
2834 object loading function as-it.
2835 * minor incompatible change: --disable-debugger toplevel option now takes
2836 effect before processing of initialization files and --eval or --load
2838 * new feature: new commandline argument: --script, which supports
2839 shebang lines. See documentation for details. (based on work by
2841 * new feature: SAVE-LISP-AND-DIE can save current values of
2842 --dynamic-space-size and --control-stack-size in the executable core,
2843 causing it to skip normal runtime option processing. See documentation
2844 for details. (thanks to Zach Beane)
2845 * enhancement: inoccous calls to EVAL or generic functions dispatching
2846 on subclasses of eg. STREAM no longer cause compiler notes to appear.
2847 * enhancement: the system no longer resignals errors from --load and
2848 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
2849 associated with the original error to be lost. (thanks to Ariel
2851 * enhancement: :DONT-SAVE keyword argument has been added to
2852 LOAD-SHARED-OBJECT for controlling interaction with
2853 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
2854 the effects of an earlier LOAD-SHARED-OBJECT call.
2855 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
2856 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
2857 provided. (reported by Cedric St-Jean)
2858 * bug fix: circularity handling in the reader did not treat raw
2859 structure slots correctly. (reported by Cedric St-Jean)
2860 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
2861 file descriptors when there were none.
2862 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
2863 was broken. (reporteed by Willem Broekema)
2864 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
2865 pathnames without a directory.
2866 * bug fix: COMPILE-FILE did not warn about undefined variable
2867 references at toplevel, and LOAD of the resulting fasl did
2868 not signal an error.
2869 * bug fix: functions with non-required arguments used to end up with
2870 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
2871 * bug fix: redefining a function with non-required arguments didn't
2872 update the system's knowledge about its call signature properly.
2873 * bug fix: fixed #431; incompatible alien record type redefinitions
2874 are detected and handled. (reported by Neil Haven)
2875 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
2876 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
2878 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2879 after alien stack frames.
2880 * bug fix: strings passed to mk{s,d}temp lacked null termination
2882 changes in sbcl-1.0.21 relative to 1.0.20:
2883 * new feature: the compiler is able to track the effective type of a
2884 generic function across method addition and removal.
2885 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2886 appropriately typed structure slots without locking.
2887 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2888 information like those gathered by TIME using a programming-friendly
2890 * new feature: TIME reports time taken even if the form performs a
2891 non-local transfer of control.
2892 * enhancement: reduced conservativism on GENCGC platforms: on
2893 average 45% less pages pinned (measured from SBCL self build).
2894 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2895 mutate constant symbols or violate declaimed type of the symbol.
2896 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2897 sleeping on the semaphore in heavily contested semaphores.
2898 * bug fix: semaphores and condition variables were not interrupt
2900 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2901 owned by other threads anymore.
2902 * bug fix: FIND on lists called KEY outside the specified
2903 subsequence. (reported by budden)
2904 * bug fix: LOG doesn't use single-float intermediate results when
2905 given mixed integer and double-float arguments, leading to better
2906 precision. (reported by Bob Felts)
2907 * bug fix: LOG with base zero returned values of inconsistent type.
2909 changes in sbcl-1.0.20 relative to 1.0.19:
2910 * minor incompatible change: OPTIMIZE qualities
2911 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2912 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2913 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2914 * documentation: some slot access efficiency guidelines have been
2915 added to the user manual.
2916 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2917 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2918 as ASSOC and MEMEBER.
2919 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2920 to more efficient EQ-comparison versions more often.
2921 * optimization: enhanced derivation of DOLIST iteration variable type
2923 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2925 * optimization: runtime lookup of function definitions can be
2926 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2927 * optimization: compiler is able to derive the return type of
2928 (AREF (THE STRING X) Y) as being CHARACTER.
2929 * optimization: CLRHASH on empty hash-tables no longer does pointless
2930 work. (thanks to Alec Berryman)
2931 * optimization: REPLACE deftransforms don't punt when :START1 or
2933 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2934 no longer emits a code deletion note. (reported by Andrew
2936 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2937 functions with an odd number of &OPTIONAL arguments, a &REST
2938 argument, and one or more &KEY arguments at the call site.
2939 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2940 arguments appeared at call sites as well.
2941 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2942 READ-LINE &co can no longer read from them afterwards. (reported
2944 * bug fix: fixed #427: unused local aliens no longer cause compiler
2945 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2947 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2948 alien-stack leakage. (reported by Andy Hefner)
2949 * bug fix: PROGV signals an error when an attempt to violate declared
2950 type of a variable or bind a constant is made.
2951 * bug fix: SET signals an error when an attempt to violate declared
2952 type of a variable is made.
2953 * bug fix: restart computation during the execution of a restart
2954 test function no longer causes infinite recursion. (reported by
2956 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2957 signals an error. (thanks to Pierre Mai)
2958 * bug fix: EXPORT left symbol unexported in conflict situations.
2959 (thanks to Michael Weber)
2960 * bug fix: correctly handle name conflicts involving CL:NIL.
2961 (thanks to Michael Weber)
2962 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2963 conflicts arising from USEing package with conflicting symbols
2964 correctly. (thanks to Michael Weber)
2966 changes in sbcl-1.0.19 relative to 1.0.18:
2967 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2968 warnings that go otherwise unhandled will be muffled if they are
2969 of the type that's the value of this variable.
2970 * optimization: stack allocation is slightly more efficient on x86
2972 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2973 where a raw slot always is initialized using the initform whose
2974 type is not know sufficiently well a compile-time are now compiled
2975 correctly. (reported by John Morrison)
2976 * bug fix: compiler no longer makes erronous assumptions in the
2977 presence of non-foldable SATISFIES types.
2978 * bug fix: stack analysis missed cleanups of dynamic-extent
2979 arguments in non-let-converted calls to local functions.
2980 * improvements to the Windows port:
2981 ** adjusted address spaces for building on both Win32 and
2982 Win64. (thanks for John Connors)
2983 * fixed some bugs revealed by Paul Dietz' test suite:
2984 ** interval arithmetic during type derivation used inexact integer
2985 to single-float coercions.
2986 ** arithmetic operations involving large integers and single
2987 floats give the same results in compiled and interpreted code.
2988 ** deriving the result type of COERCE no longer signals an error
2989 if the derived type of the second argument is a MEMBER type
2990 containing invalid type specifiers.
2991 ** ADJOIN with constant NIL as second argument works correctly.
2992 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2994 changes in sbcl-1.0.18 relative to 1.0.17:
2995 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2996 profiles only the current thread.
2997 * minor incompatible change: changes to SYMBOL-VALUE of constants
2998 defined with DEFCONSTANT now signal an error.
2999 * enhancement: SB-SPROF now has support for wallclock profiling,
3000 and is also able to profile specific threads. REPORT output
3001 has also additional sorting options.
3002 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
3004 * optimization: structure allocation has been improved
3005 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
3006 ** out of line constructors are ~10% faster.
3007 ** inline constructors are ~15% faster.
3008 ** inline constructors are capable of dynamic extent allocation
3009 (generally on x86 and x86-64, in some cases on other platforms
3011 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
3013 * optimization: file compiler is now able to coalesce non-circular
3014 lists, non-base strings, and bit-vectors. Additionally, constants
3015 are never referenced through SYMBOL-VALUE at runtime.
3016 * optimization: code defining methods on PRINT-OBJECT (and other
3017 generic functions in the COMMON-LISP package) now loads faster.
3018 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
3020 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
3021 fasl is now deleted. (reported by Attila Lendvai)
3022 * bug fix: READ-LINE always returned NIL for the last line in files.
3023 (reported by Yoshinori Tahara)
3024 * bug fix: more accurate disassembly annotations of foreign function
3025 calls. (thanks to Andy Hefner)
3026 * bug fix: trimming non-simple strings and non-string string
3027 designators when the there is nothing to trim works properly.
3028 (thanks to James Knight)
3029 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
3030 (thanks to Travis Cross)
3031 * fixed some bugs revealed by Paul Dietz' test suite:
3032 ** NIL is a valid function name (regression at 1.0.13.38)
3033 ** FILL on lists was missing its return value (regression at 1.0.12.27)
3034 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
3035 fill pointers properly (regression at 1.0.12.23)
3036 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
3037 displacement indices properly (regression at 1.0.12.23)
3039 changes in sbcl-1.0.17 relative to 1.0.16:
3040 * temporary regression: user code can no longer allocate closure
3041 variable storage on stack, due to bug 419 without explicitly
3042 requesting it. Please consult sbcl-devel for advice if you need to
3043 use this feature in the meanwhile.
3044 * new feature: runtime argument --control-stack-size can be used to
3045 adjust thread default control stack size.
3046 * enhancement: improved TIME output
3047 ** all times are reported using the measured accuracy (milliseconds
3048 for real and GC times, microseconds for everything else.)
3049 ** processor cycle counts on x86 and x86-64.
3050 ** interpreted forms are counted for both evaluator modes.
3051 ** number of lambdas converted by the compiler is reported.
3052 ** CPU percentage report (computed from real and total run time.)
3053 ** more comprehensive run time reporting, using a condenced format
3054 ** interperted form, lambda, and page fault counts are omitted
3056 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
3058 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
3059 * optimization: two argument forms of LAST are upto ~10% faster
3060 in normal SPEED policies.
3061 * optimization: NCONC no longer needs to heap cons its &REST list
3062 in normal SPEED policies.
3063 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
3064 to Sidney Markowitz)
3065 * bug fix: UNION and NUNION work with :TEST-NOT once more,
3066 regression since 1.0.9.1. (thanks to Eric Marsden)
3067 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
3068 since 1.0.15.36. (thanks to Paul Khuong)
3069 * bug fix: LAST when always returned the whole list when given a bignum
3070 as the second argument.
3071 * bug fix: dynamic extent allocation of nested lists and vectors
3072 could leak to otherwise accessible parts.
3073 * bug fix: invalid optimization of heap-allocated alien variable
3075 * bug fix: fasl header checking is less vulnerable to different
3076 platform word lengths.
3077 * bug fix: more correct assembler syntax for GNU binutils
3078 2.18.50.0.4 support. (thanks to Marijn Schouten)
3079 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
3081 * bug fix: the fopcompiler can handle LOCALLY forms (with no
3082 declarations) successfully. (reported by Attila Lendvai)
3084 changes in sbcl-1.0.16 relative to 1.0.15:
3085 * minor incompatible change: revert the changes to sb-posix's error
3086 signaling added in 1.0.14.
3087 * minor incompatible change: change PROBE-FILE back to returning
3088 NIL whenever we can't get a truename, as was the case before 1.0.14.
3089 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
3090 inherits from ERROR instead of just CONDITION.
3091 * new feature: SB-INTROSPECT can provide source locations for instances
3092 as well. (thanks to Tobias Rittweiler)
3093 * optimization: binding special variables now generates smaller code
3094 on threaded platforms.
3095 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
3096 and cases where no :TEST is given but the compiler can infer that
3097 the element to search is of type (OR FIXNUM (NOT NUMBER)).
3098 * optimization: better LOGNOT on fixnums.
3099 * optimization: modular arithmetic for a particular requested width
3100 is implemented using a tagged representation unless a better
3101 representation is available.
3102 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
3103 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
3104 for wellformedness and returns a specialized vector. (reported by
3105 Francois-Rene Rideau)
3106 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
3107 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
3108 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
3109 unscheduling timer at the same time as another timer fires.
3110 * bug fix: don't reschedule timers for dead threads.
3111 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
3112 * bug fix: copying output from RUN-PROGRAM to a stream signalled
3113 bogus errors if select() was interrupted.
3114 * enhancement: add support for fcntl's struct flock to SB-POSIX.
3116 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
3117 * enhancement: cleaner backtraces for interactive interrupts, as
3118 well as other cases where the interesting frames used to be
3119 obscured by interrupt handling frames.
3120 * enhancement: untracing a whole package using (UNTRACE "FOO") is
3121 now supported, and tracing a whole package using (TRACE "FOO") now
3122 traces SETF-functions as well.
3123 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
3124 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
3125 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
3126 * unreadably printed representation of hash-tables now includes
3128 * bug fix: partially fixed #188: type propagation from assignments
3129 is now more efficient.
3130 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
3131 'DOUBLE-FLOAT) are not flushable.
3132 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
3133 full address of the object, and none of the tag bits.
3134 * bug fix: readably printing hash-tables now respects other printer
3135 control variables. (reported by Cedric St-Jean)
3136 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
3137 keyword with MAKE-HASH-TABLE.
3138 * bug fix: export SB-POSIX:MKSTEMP.
3139 * bug fix: SORT was not interrupt safe.
3140 * bug fix: XREF accounts for the last node of each basic-block as
3142 * bug fix: MAKE-INSTANCE optimizations interacted badly with
3143 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
3144 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
3145 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
3146 create obsolete instances in the case of redefinition or
3147 obsoletion of a superclass. (thanks to Andy Hefner)
3148 * bug fix: Support for the Alpha architecture has been revived; it had
3149 suffered somewhat from lack of maintenance since sbcl-1.0.
3150 * improvements to the Windows port:
3151 ** The system detects the codepage to use at startup, instead of
3152 using the value from the saved core. (thanks to Kei Suzuki)
3154 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
3155 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
3156 (see documentation for details.)
3157 * revived support for OpenBSD (contributed by Josh Elsasser)
3158 * partially fixed bug #108: ROOM no longer suffers from occasional
3159 (AVER (SAP= CURRENT END)) failures.
3160 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
3161 bodies no longer cause a WARNING to be signalled. (reported by
3163 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
3164 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
3165 the bug in TRUNCATE.) (reported by Michael Weber)
3166 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
3167 no samples. (reported by Andy Hefner)
3168 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
3169 no longer appear as (NIL ...) frames in backtraces.
3170 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
3171 is now actually exported from SB-EXT as documented. (reported by
3173 * bug fix: sb-aclrepl now correctly understands how to inspect
3174 single-floats on 64-bit platforms where single-floats are not boxed.
3175 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
3176 yet been finalized. (reported by Levente Meszaros)
3177 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
3178 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
3179 SBCL-specific optimize qualities.
3181 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
3182 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
3183 an executable in the search path, and does so in the child
3184 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
3185 been removed; it can be found in the CVS history, for somebody who
3186 needs that search behavior (see the manual).
3187 * minor incompatible change: compiler policy re. weakening type
3188 checks has changed: now type checks are weakened only if SAFETY < 2
3190 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
3191 unparsing of directory pathnames as files. Analogously,
3192 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
3193 filename to parse into a directory pathname.
3194 * enhancement: implicit generic function creation now signals a
3195 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
3196 users can bind handlers for and muffle around calls to LOAD.
3197 * enhancement: RUN-PROGRAM allows unicode arguments and environments
3198 to be used (using the default stream external format), and allows
3199 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
3200 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
3201 strings and vectors whose element-type or simplicity is not fully
3202 known at compile-time.
3203 * optimization: STRING-TRIM and related functions no longer allocate
3204 a new string when no trimming needs to be performed. These functions
3205 are also faster than before when the input string has been declared
3207 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
3208 * optimization: READ-LINE is significantly faster for files containing
3210 * optimization: non-open coded uses of character comparison operators
3211 (e.g. char=) no longer cons when called with more than one parameter
3212 on platforms supporting dynamic-extent allocation.
3213 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
3214 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
3215 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
3217 * bug fix: some sequence functions elided bounds checking when
3219 * bug fix: too liberal weakening of union-type checks when SPEED >
3221 * bug fix: more bogus fixnum declarations in ROOM implementation
3224 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
3225 * new feature: MAKE-HASH-TABLE now experimentally accepts a
3226 :SYNCHRONIZED argument, which makes the hash-table safe for
3227 concurrent accesses (but not iteration.) See also:
3228 SB-EXT:WITH-LOCKED-HASH-TABLE, and
3229 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
3230 * optimization: CONCATENATE on strings is an order of magnitude faster
3231 in code compiled with (> SPEED SPACE).
3232 * optimization: SUBSEQ is ~50% faster on lists.
3233 * bug fix: bug 417 fixed -- source location reporting is now more robust.
3234 * bug fix: SUBSEQ on a list will now correctly signal an error if if
3235 END is smaller then START.
3236 * bug fix: SB-PROFILE will no longer report extra consing for nested
3237 calls to profiled functions.
3238 * bug fix: ROOM implementation had bogus fixnum declarations which
3239 could cause type-errors when calling ROOM on large images.
3240 * bug fix: if file compilation is aborted, the partial fasl is now
3241 deleted, and COMPILE-FILE returns NIL as the primary value.
3242 * bug fix: number of thread safety issues relating to SBCL's internal
3243 hash-table usage have been fixed.
3244 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
3245 be returned from its body when the values were being returned
3246 using unknown-values return convection and the W-P-O was wrapped
3247 inside an UNWIND-PROTECT.
3248 * bug fix: sb-posix should now compile again under Windows, enabling
3249 slime to work again.
3251 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
3252 * incompatible change: hash-table accessor functions are no longer
3253 automatically protected by locks. Concurrent accesses on the same hash-table
3254 from multiple threads can give inconsistent results or even corrupt the
3255 hash-table completely. Multi-threaded applications should do their own
3256 locking at the correct granularity. In the current implementation it is
3257 still safe to have multiple readers access the same table, but it's not
3258 guaranteed that this property will be maintained in future releases.
3259 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
3260 and will signal an error at runtime.
3261 * enhancement: SB-THREAD package now exports a semaphore interface.
3262 * enhancement: CONS can now stack-allocate on x86 and
3263 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
3265 * enhancement: nested lists can now be stack allocated on
3266 platforms providing stack allocation support.
3267 * enhancement: dynamic-extent support has been extended to support
3268 cases where there are multiple possible sources for the stack
3270 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
3271 if the mutex is uncontested on Linux.
3272 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
3273 as specified by the CLHS. (thanks to Tobias Rittweiler)
3274 * bug fix: NaN comparison now works on x86-64.
3275 * bug fix: CLOSE :ABORT T on a stream with pending output now
3277 * bug fix: instances of non-standard metaclasses using standard
3278 instance structure protocol sometimes missed the slot type checks
3280 * bug fix: known functions can be inlined in high-debug code.
3282 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
3283 * minor incompatible change: the MSI installer on Windows no longer
3284 associates .lisp and .fasl files with the installed SBCL.
3285 * minor incompatible change: :UNIX is no longer present in *FEATURES*
3286 on Windows. (thanks to Luis Oliviera)
3287 * new feature: SB-CLTL2 contrib module now implements
3288 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
3289 * optimization: scavenging weak pointers is now more efficient,
3290 requiring O(1) instead of O(N) per weak pointer to identify
3291 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
3292 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
3293 method bodies using constant slot-names when the first argument is
3294 a specializer parameter for the method.
3295 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
3296 names, when the class of the instance is a direct instance
3297 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
3298 as slow as the constant slot-name case.)
3299 * optimization: member type construction is now O(N) instead
3301 * optimization: UNION and NUNION are now O(N+M) for large
3302 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
3304 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
3305 now more readable in environments like Slime which display it.
3306 (thanks to Tobias C. Rittweiler)
3307 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
3308 was able to infer the correct argument type for the object on which
3309 the CAS operation was being performed.
3310 * bug fix: copy propagation interfered with parallel assignment
3311 semantics in local calls. (reported by Paul Khuong)
3312 * bug fix: the signed modular fixnum shift compiled to wrong code on
3313 x86 and x86-64. (spotted by a slight modification to some of
3316 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
3317 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
3318 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
3319 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
3321 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
3322 and generic function now print the object identity for anonymous
3323 instances. (thanks to Attila Lendvai)
3324 * enhancement: as an extension to MOP, SBCL now supports SETF of
3325 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
3326 (thanks to Attila Lendvai)
3327 * enhancement: sb-cover has an alternate annotation mode which puts
3328 the form annotations at the car of the form, instead of annotating
3329 it completely. The benefit of this mode is that it shows better
3330 which forms were instrumented by the compiler.
3331 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
3332 by printer control variables. (reported by Dan Corkill)
3333 * bug fix: system leaked memory when delayed output was performed by
3334 the OS in smaller chunks then expected. (thanks to David Smith)
3335 * bug fix: system leaked memory when file streams were not closed
3337 * bug fix: large objects written to slow streams that were modified
3338 after the write could end up with the modified state written to
3339 the underlying file descriptor.
3340 * bug fix: multiple threads operating in parallel on the same stream
3341 could cause buffer-overflows.
3342 * bug fix: source location information is stored correctly
3343 (broken since 1.0.6). This bug would generally show up as the
3344 Slime debugger highlighting the wrong form when the sldb-show-source
3346 * bug fix: Branch forms are again annotated as branches in the sb-cover
3348 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
3349 on x86-64. (reported by Gregory Vanuxem)
3350 * bug fix: EQUALP could return wrong results for structures with raw
3351 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
3352 word). (reported by Vjacheslav Fyodorov)
3353 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
3356 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
3357 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
3358 atomic compare-and-swap operations on threaded platforms.
3359 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
3360 allows assigning a global minimum value to optimization qualities
3361 (overriding proclamations and declarations).
3362 * enhancement: closed over variables can be stack-allocated on x86
3364 * performance bug fix: GETHASH and (SETF GETHASH) are once again
3366 * optimization: slot definition lookup is now O(1). This speeds up
3367 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
3368 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
3369 * optimization: ASSOC and MEMBER can now be open-coded for all
3370 combinations of keyword arguments when second argument is constant
3371 and SPEED >= SPACE. In other cases a specialized version is
3373 * bug fix: using obsoleted structure instances with TYPEP and
3374 generic functions now signals a sensible error.
3375 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
3376 (reported by Kristoffer Kvello)
3377 * bug fix: backtrace construction is now more careful when making
3378 lisp-objects from pointers on the stack, to avoid creating bogus
3379 objects that can be seen by the GC.
3380 * bug fix: defaulting of values in contexts expecting more than 7
3381 variables now works on x86-64. (reported by Christopher Laux)
3382 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
3384 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
3385 as the property-list of a symbol.
3386 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
3387 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
3388 situations requested, are once again file-compileable. (reported
3391 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
3392 * MOP improvement: support for user-defined subclasses of
3393 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
3394 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
3395 the expansion of DEFMETHOD, is responsible for generating a form
3396 which creates a list of specializers when evaluated. Additional
3397 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
3398 debugging and introspective support.
3399 * minor incompatible change: the (unsupported) spinlock interface
3400 has changed: free spinlock now has the value NIL, and a held spinlock
3401 has the owning thread as its value.
3402 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
3403 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
3405 * enhancement: name of a socket-stream is now "a socket" instead of
3406 "a constant string".
3407 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
3408 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
3409 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
3410 for generic functions. (Thanks to Tobias C. Rittweiler)
3411 * optimization: bignum printing speed has been improved by 20-40%
3412 (depending on the bignum size.)
3413 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
3415 * bug fix: the cache used by the CLOS to store precomputed effective
3416 methods, slot offsets, and constant return values is now thread and
3418 * bug fix: generic function dispatch function updating is now thread
3419 and interrupt safe (in the sense that the known issues have been
3421 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
3422 * bug fix: interning EQL-specializers is now thread and interrupt safe.
3423 * bug fix: asdf systems with dependencies to the SB-POSIX or
3424 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
3425 * bug fix: interrupt safety of applicable method computation has been
3428 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
3429 * new contrib: sb-cover, an experimental code coverage tool, is included
3430 as a contrib module.
3431 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
3432 significantly faster.
3433 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3434 produce more efficient code on x86-64 if the compiler can determine
3435 that (+ INDEX <constant>) does not require a bounds check and FOO
3436 has an element type at least 8 bits wide.
3437 * enhancement: a new, experimental synchronous timeout facility is
3438 provided. Refer to SB-SYS:WITH-DEADLINE for details.
3439 * enhancement: when a symbol name conflict error arises, the
3440 conflicting symbols are always printed with a package prefix.
3441 (thanks to Kevin Reid)
3442 * enhancement: stepping is now once again supported on the SPARC and
3443 MIPS platforms. (It is also now more likely to work on CheneyGC
3445 * enhancement: sb-sprof can now also track and report accurate call
3447 * bug fixes: the treatment of non-standard subclasses of
3448 SB-MOP:SPECIALIZER is more correct.
3449 * incompatible change: PURIFY no longer copies the data from the
3450 dynamic space into the static and read-only spaces on platforms
3451 that use the generational garbage collector
3452 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
3454 * bug fix: GC race condition occasionally resulting in crashes with
3455 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
3457 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
3459 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
3460 a STYLE-WARNING to be signalled (regression from 1.0.4.)
3461 * bug fix: an asynchronous interrupt could previously leave the
3462 system running with GC inhibited.
3463 * bug fix: a DECLARE form evaluated at top-level now causes an error
3464 rather than silently (or verbosely) returning NIL.
3465 * bug fix: trying to dissassemble functions compiled at high DEBUG could
3466 result in a error being signalled due to source form lookup errors.
3467 (reported by Peter Graves)
3469 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
3470 * incompatible change: removed writer methods for host-ent-name,
3471 host-ent-addresses -- changing the values did not update the DNS
3473 * minor incompatible change: changed experimental JOIN-THREAD interface
3474 * documentation: the manual now lists reader and writer methods
3475 in class slot documentation sections. (thanks to Richard M Kreuter)
3476 * documentation: unwinding from asyncronous events has been
3477 documented as unsafe.
3478 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
3479 in multithreaded application code.
3480 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
3481 platforms. (thanks to James Anderson for the optimization hint)
3482 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
3484 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
3485 variants no longer cons.
3486 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
3487 their NOT- variants no longer cons.
3488 * optimization: EQUAL hash tables no longer use SXHASH for objects
3489 of all data types, but instead use an EQL hash for types for which
3490 EQUAL is the same as EQL.
3491 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
3492 are significantly faster.
3493 * optimization: new STRING-OUTPUT-STREAM implementation is much
3494 faster for large outputs and conses 30% less on average.
3495 * enhancement: XREF information is now collected for references made
3496 to global variables using SYMBOL-VALUE and a constant argument.
3497 * enhancement: SIGINT now causes a specific condition
3498 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
3499 * bug fix: FILE-POSITION used to signal an error in some cases where
3500 ANSI requires it to return NIL.
3501 * bug fix: ADJUST-ARRAY is now interrupt-safe.
3502 * bug fix: adding and removing fd-handlers is now interrupt-safe.
3503 * bug fix: inlined calls to C now ensure 16byte stack alignment on
3505 * bug fix: bad type declaration in the CLOS implementation has
3506 been fixed. (reported by James Anderson)
3507 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
3508 (thanks to Lutz Euler)
3509 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
3510 required by the CLHS. (reported by Samium Gromoff)
3511 * bug fix: dead unbound variable references now signal an error.
3512 (reported by Marco Monteiro)
3513 * bug fix: / with an unused value was being deleted in safe code.
3514 (thanks to Marco Monteiro and Kevin Reid)
3515 * bug fix: number of characters that can be written onto a single
3516 line in a file is unlimited.
3517 * bug fix: some GC deadlocks caused by asynchronous interrupts have
3518 been fixed by inhibiting interrupts for when GC is disabled.
3519 * bug fix: some interrupt safety issues with GETHASH, (SETF
3520 GETHASH), CLRHASH and REMHASH have been fixed.
3521 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
3522 specifier no longer causes infinite recursion.
3523 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
3524 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
3525 * bug fix: an &environment argument with the correct variable information
3526 is passed to macros that are expanded during byte compilation.
3527 (reported by Samium Gromoff)
3528 * bug fix: a logic error was causing the hash function for bignums to
3529 have excessive amounts of collisions. (reported by Faré Rideau)
3530 * bug fix: modifying the contents of an array could change the return
3531 value of SXHASH on that array, which is only allowed for strings
3532 and bit vectors. (bug introduced in 0.9.16)
3533 * improvement: the x86-64/darwin port now passes all tests (except
3534 for the debugger tests) but should still be considered
3535 experimental until this is fixed.
3536 * improvement: a style-warning is signaled for CASE (etc) clauses with
3537 duplicate keys. (thanks to Kevin Reid)
3538 * improvement: macos/x86 and macos/x86-64 now use mach exception
3539 handlers for dealing with illegal instructions (for trapping and
3540 error handling) and memory protection violations (for GC).
3542 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
3543 * new platform: experimental support for x86-64/darwin (MacOS).
3544 * incompatible change: the thread-safe (on most platforms) getaddrinfo
3545 and getnameinfo sockets functions are used instead of gethostbyaddr
3546 and gethostbyname, on platforms where the newer functions are available.
3547 As a result, the ALIASES field of HOST-ENT will always be NIL on these
3549 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
3550 don't print the startup banner, but behave as if --noinform was passed
3551 as a command line argument. (thanks to Kevin Reid)
3552 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
3553 * optimization: code using alien values with undeclared types is much faster.
3554 * optimization: the compiler is now able to open code SEARCH in more cases.
3555 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
3556 * bug fix: using standardized COMMON-LISP special variables as loop
3557 variables no longer signals bogus package lock violations. (reported
3559 * bug fix: declaring local loop variables to be of a range-limited type
3560 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
3561 (reported by Andras Simon)
3562 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
3563 bugs remain on x86-64.)
3564 * bug fix: the #= and ## reader macros now interact reasonably with
3565 funcallable instances.
3566 * bug fix: type-checks for function arguments were compiled using the
3567 compiler policy settings of the wrong lexical environment (in 1.0.2
3569 * bug fix: SHADOW accepts characters as string designators, as required
3570 by the spec (thanks to Eric Marsden)
3571 * bug fix: fixed GC safety issues when foreign functions are called with
3572 non-base strings as arguments
3573 * bug fix: more consistent error output for fatal-compiler-warnings, like
3575 * bug fix: functions with proper names were showing up as NIL in
3576 backtraces (reported by Edi Weitz, regression in 1.0.2)
3578 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
3579 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
3580 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3581 produce more efficient code on the x86 if the compiler can determine
3582 that (+ INDEX <constant>) does not require a bounds check and FOO
3583 has an element type at least 8 bits wide.
3584 * bug fix: references to undefined variables are handled the same way
3585 in toplevel forms as in the normal compiler
3586 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
3588 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
3589 (thanks to Jon Buller)
3590 * improvement: faster compilation times for complex functions
3591 * improvement: added readlink support to SB-POSIX (thanks to Richard
3594 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
3595 * improvement: experimental support for mach exception handling on
3596 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
3598 * improvement: support for GBK external format.
3599 (thanks to Chun Tian (binghe))
3600 * improvement: the debugger now displays variables that have been closed
3601 over, in code compiled with (DEBUG 2) or higher
3602 * improvement: support for executable cores on NetBSD (thanks to
3604 * new feature: added a RESTART-FRAME debugger command
3605 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
3606 be used to provide an implementation for FILE-POSITION on Gray streams
3607 (thanks to Eric Marsden)
3608 * new feature: add syslog, openlog and closelog support to SB-POSIX
3609 (thanks to Richard Kreuter)
3610 * optimization: the function call overhead in code compiled with
3611 a high DEBUG optimization setting is significantly
3612 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
3613 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
3614 (thanks to Tony Martinez)
3615 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
3616 evaluated once (reported by Kevin Reid)
3617 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
3618 works again (thanks to Kilian Sprotte)
3619 * bug fix: an error is signaled for tagbodies with duplicate tags
3620 (thanks to Stephen Wilson)
3621 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
3622 * bug fix: Win32 port can now handle foreign code unwinding Lisp
3623 stack frames from alien callbacks.
3624 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
3625 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
3626 65k pages (thanks to David Woodhouse)
3627 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
3629 changes in sbcl-1.0.1 relative to sbcl-1.0:
3630 * new platform: FreeBSD/x86-64, including support for threading.
3631 * new feature: the compiler stores cross-referencing information
3632 about function calls (who-calls), macroexpansion (who-macroexpands)
3633 and special variables (who-binds, who-sets, who-references) for code
3634 compiled with (< SPACE 3). This information is available through the
3635 sb-introspect contrib.
3636 * new feature: users may subclass SEQUENCE, and have instances of
3637 these classes interoperate with standard Common Lisp functions if
3638 a number of methods are defined. (This feature is experimental
3639 and the interface subject to change based on feedback from SBCL
3640 users and the general community)
3641 * improvement: sb-sprof traces call stacks to an arbitrary depth on
3642 x86/x86-64, rather than the previous fixed depth of 8
3643 * improvement: another pthread back-end of mutex "pthread-futex".
3644 * bug fix: non-ascii command-line arguments are processed correctly
3645 (thanks to Yaroslav Kavenchuk)
3646 * bug fix: non-required arguments were not passed correctly when a method
3647 defined using DEFMETHOD was called from a mop-generated method using
3648 CALL-NEXT-METHOD (reported by Pascal Costanza)
3649 * bug fix: recursion is now permitted in accessors through
3650 SLOT-UNBOUND. (reported by Pascal Costanza)
3651 * bug fix: an error was signaled at startup if the HOME environment
3652 variable was defined, but had an empty value (reported by Peter Van Eynde)
3653 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
3654 signal a PROGRAM-ERROR, not a BUG.
3655 * bug fix: SB-POSIX:READDIR works when built with large file support.
3656 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
3658 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
3659 for better automatic indentation support. (thanks to Matt Pillsbury)
3660 * optimization: loading generic functions no longer takes O(n^2) time,
3661 proportional to the amount of methods in the generic function
3662 (reported by Todd Sabin and Jeremy Brown)
3663 * optimization: the FIND and POSITION family of sequence functions
3664 are significantly faster on arrays whose element types have been
3666 * improvements to the Windows port:
3667 ** Intermittent heap corruption problems have been fixed. (thanks
3668 to Alastair Bridgewater)
3669 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
3671 ** Lisp is able to unwind foreign exception frames from alien
3672 callbacks. (thanks to Alastair Bridgewater)
3674 changes in sbcl-1.0 relative to sbcl-0.9.18:
3675 * improvement: experimental support for threading on FreeBSD/x86.
3676 (thanks to NIIMI Satoshi)
3677 * improvement: runtime option --dynamic-space-size can be used
3678 to set the size of the dynamic space reserved on startup.
3679 * improvement: floating point modes in effect are now saved in
3680 core, and restored on startup.
3681 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
3682 startup, not time since first call to GET-INTERNAL-REAL-TIME.
3683 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
3684 threads are not running after *SAVE-HOOKS* have run.
3685 * improvement: writes to CLOS instance slots are type-checked in code
3686 compiled with (SAFETY 3)
3687 * improvement: floating-point exception handling on FreeBSD (thanks to
3689 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
3690 (thanks to Zach Beane)
3691 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
3693 * improvement: added support for the Shift-JIS external format.
3694 (contributed by NIIMI Satoshi)
3695 * improvement: callbacks are supported on Linux/PPC. (thanks to
3697 * bug fix: compiler bug triggered by a (non-standard) VALUES
3698 declaration in a LET* was fixed. (reported by Kaersten Poeck)
3699 * bug fix: file compiler no longer confuses validated and already
3700 dumped structurres. (reported by Kaersten Poeck)
3701 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
3702 fill-pointer signals a type-error as required. (thanks to
3704 * bug fix: disassemly of funcallable instances works.
3705 * bug fix: single stepping on PPC.
3706 * bug fix: fix thread-safety problems in the type system (generally
3707 manifesting as nonsensical errors like "STRING is a bad type specifier
3708 for sequences" or "The value 1 is not of type FIXNUM")
3709 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
3710 (reported by Josip Gracin)
3711 * bug fix: an error is signaled for attempts to displace arrays with
3712 incompatible element types (thanks to Mario Mommer)
3713 * bug fix: more correct handling of wide characters in debug info
3714 (bug reported by Attila Lendvai and fixed by Juho Snellman)
3715 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
3716 and don't cause extra consing
3717 * optimization: MAP and MAP-INTO are significantly faster on vectors
3718 whose elements types have been declared.
3719 * Improvements to SB-SPROF:
3720 ** Support for allocation profiling
3721 ** Reduced profiling overhead, especially for long profiling runs
3722 * Improvements to the Windows port:
3723 ** floating point exceptions are now reported correctly.
3724 ** stack exhaustion detection works partially.
3725 ** more accurate GET-INTERNAL-REAL-TIME.
3726 ** better RUN-PROGRAM behaviour in case of errors in the child
3728 ** PROBE-FILE now simplifies pathnames correctly.
3729 ** DIRECTORY now works correctly with :WILD-INFERIORS.
3730 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
3731 1st 1970 (although time timezone data will be unreliable).
3732 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
3734 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
3735 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
3736 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
3738 * bug fix: two potential GC deadlocks affecting threaded builds.
3739 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
3740 returns T (reported by Anton Kazennikov)
3741 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
3742 with non-variable places
3743 * bug fix: remove a race condition in the setting of
3744 funcallable-instance functions, this should make threaded CLOS
3745 code more stable against memory faults.
3746 * bug fix: corruption of specials when unbinding is interrupted by an
3747 asynchronous unwind (reported by Hannu Koivisto)
3748 * improvement: the debugger will now also display local variables that
3749 are only used once, for code compiled with a DEBUG optimization quality
3752 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
3753 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
3754 * incompatible change: External-format support for FFI calls. The
3755 SB-ALIEN:C-STRING no longer implies an ASCII
3756 external-format. Instead the string is subject to external-format
3757 conversion. Additionally return values of type SB-ALIEN:C-STRING
3758 are by default of type (SIMPLE-ARRAY CHARACTER), not
3759 SIMPLE-BASE-STRING. For an alien type that behaves like the old
3760 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
3761 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
3762 * incompatible change: SB-EXT package no longer contains the
3763 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
3764 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
3766 * incompatible change: the single-stepper is no longer available
3767 on Alpha, Mips and Sparc platforms.
3768 * minor incompatible change: the direct superclasses of
3769 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
3770 not (STANDARD-OBJECT FUNCTION). This makes the
3771 class-precedence-lists of GENERIC-FUNCTION and
3772 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
3774 * minor incompatible change: the default stream external format on
3775 non-unicode SBCL is no longer detected from the locale, but is always
3777 * new feature: Add a version of evaluator that uses an interpreter instead
3778 of the compiler. EVAL still uses the compiler by default, to switch it
3779 to use the interpreter, set the value of the variable
3780 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
3781 * minor incompatible change: the single-stepper REPL has been merged
3782 with the normal debugger (see the "Stepping" heading of the debugger help
3783 for more details). The debugger command STEP will no longer switch
3784 to the single-stepper REPL.
3785 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
3786 for a type now works.
3787 * bug fix: loading of default sysinit file works. (thanks to Leonid
3789 * bug fix: better detection of circularities in the file-compiler.
3790 (reported by Marco Monteiro)
3791 * bug fix: the CL pathname functions now work with files that have
3792 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
3793 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
3794 systems with Unix98 pty semantics.
3795 * bug fix: ASDF-INSTALL will now work with bsd tar.
3796 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
3798 * bug fix: timers expiring in dead threads no longer cause a
3799 type-error (reported by Paul "Nonny Mouse").
3800 * bug fix: thanks to more lightweight single-stepper instrumentation,
3801 code compiled with (DEBUG 3) will compile and execute significantly faster,
3802 and will have more accurate type-inferencing than before
3803 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
3804 whose bindings are modified
3805 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
3806 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
3807 ** replace dummy implementations of CL:MACHINE-INSTANCE and
3808 CL:SOFTWARE-VERSION with proper version
3810 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
3811 * feature: implemented the READER-METHOD-CLASS and
3812 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
3813 as specified by AMOP.
3814 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
3816 * optimization: faster LOGCOUNT implementation on x86 and x86-64
3817 (thanks to Lutz Euler)
3818 * optimization: hashing of general arrays and vectors has been
3819 improved. (reported by Any Fingerhut)
3820 * enhancement: SB-INTROSPECT is now able to find definitions of
3821 profiled functions. (thanks to Troels Henriksen)
3822 * enhancement: compiler-macro expansion applies now to FUNCALL forms
3823 as well, allowing compiler-macros for SETF-functions to expand.
3824 * enhancement: step-instrumentation no longer wraps known
3825 single-value functions with multiple-value context, allowing
3826 better type inference.
3827 * fixed bug #337: use of MAKE-METHOD in method combination now works
3828 even in the presence of user-defined method classes. (reported by
3829 Bruno Haible and Pascal Costanza)
3830 * fixed bug #339(c): if there are applicable methods not part of any
3831 long-form method-combination group, call INVALID-METHOD-ERROR.
3832 (reported by Bruno Haible)
3833 * fixed bug #361: the :FUNCTION initarg in the protocol for
3834 initialization of methods can now be used to override
3835 internally-produced optimized functions. (reported by Bruno
3837 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
3838 system-provided lambda expression no longer cause warnings about
3839 unbound #:|pv-table| symbols.
3840 * bug fix: improved the handling of type declarations and the
3841 detection of violations for keyword arguments with non-constant
3843 * bug fix: potentially erronous calls to PATHNAME and
3844 MERGE-PATHNAMES were being flushed in some cases.
3845 (reported by Richard Kreuter)
3846 * bug fix: compiled calls to TYPEP were mishandling obsolete
3847 instances. (reported by James Bielman and Attila Lendvai)
3848 * bug fix: format strings with ~> without matching ~< no longer
3849 trigger an AVER, but signal an understandable error instead.
3850 (reported by Antonio Martinez)
3851 * bug fix: specifying an output-file without a pathname-type for
3852 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
3853 of input-file instead of "fasl". (reported by Robert Dodier)
3854 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
3855 (reported by James Y Knight).
3856 * bug fix: compiler-macros-function did not consider the environment
3857 argument for shadowing by local functions.
3858 * bug fix: compiler-macros expansion was inhibited by local INLINE
3860 * bug fix: inline expansions of known functions were subject to
3861 step-instrumentation in high debug policies, leading to problems
3862 with type-inference.
3863 * bug fix: compiler failed to differentiate between different CONS
3864 types in some cases.
3865 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
3866 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
3867 * bug fix: #368: incorrect use of expressed vs. upgraded array
3869 * bug fix: #306a: more precise unions of array types.
3870 * thread-safety improvements:
3871 ** CONDITION-WAIT could return early on Linux, if the thread was
3872 interrupted and subsequently continued with SIGCONT.
3873 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
3875 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
3876 * added support for the ucs-2 external format. (contributed by Ivan
3878 * minor incompatible change: pretty printing of objects of type
3879 (cons symbol) is, in the default pprint-dispatch-table, now
3880 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3882 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3883 called later in a class's lifetime, possibly as late as when the
3884 first instance of the class is created. Previously,
3885 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3886 class became finalizeable.
3887 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3888 for multibyte external-format streams. (thanks to "vbzoli")
3889 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3890 with :ALLOCATION :CLASS inherited from superclasses of the
3892 * fixed bug: anonymous classes can now be created using the :NAME
3893 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3894 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3895 * fixed bug: core-files saved with :EXECUTABLE T can again be
3896 executed when SBCL_HOME isn't set. (reported by James Knight)
3897 * fixed bug: toplevel LOCALLY forms with declarations could
3898 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3899 * fixed bug: printing from several different threads using different
3900 values of *print-case* could cause invalid output, due to
3901 some internal special variables of the printer not being bound
3902 thread-locally (reported by Max Mikhanosha)
3903 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3904 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3905 (reported by Pascal Costanza)
3906 * fixed bug: FINALIZE-INHERITANCE is called from
3907 REINITIALIZE-INSTANCE on classes when the class has previously
3908 been finalized, as required by AMOP.
3909 * minor code generation optimizations:
3910 ** better register allocation in CLOS dispatching functions
3911 ** overflow detection when coercing signed bytes to fixnums on x86-64
3912 ** is now implemented with one IMUL instruction instead of three shifts
3913 ** more efficient bit-vector access on x86 and x86-64
3914 ** more efficient access to raw structure slots on x86 and x86-64
3915 * fixed some bugs revealed by Paul Dietz' test suite:
3916 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3917 return its argument.
3919 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3920 * feature: thread support on Solaris/x86, and experimental thread support
3922 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3924 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3925 default method for SLOT-UNBOUND.
3926 * minor incompatible change: prevent the user from specializing the
3927 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3928 somewhat counter to the intent of the protocol, I (CSR) think, and
3929 additionally it just doesn't work in SBCL as currently
3930 implemented, thanks to optimizations (that are always valid for
3931 the other three SLOT-VALUEish functions, but not for the setter).
3932 * minor incompatible change: the :SB-LDB feature is now enabled by
3933 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3934 the low-level debugger.
3935 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3936 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3937 down to an SB-SYS:FD-STREAM, allowing direct communication in
3938 more cases. Temporary files and pipes are still used as a fallback
3940 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3941 on the non-reentrant C functions localtime(3) and gmtime(3).
3942 * bug fix: global optimization policy was not visible in LOCALLY and
3944 * bug fix: class objects can be used as specializers in methods.
3945 (reported by Pascal Costanza)
3946 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3947 with a type error. (reported by blitz_ on #lisp)
3948 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3949 failed with a type error. (reported by Pascal Bourguignon)
3950 * bug fix: merging pathnames against defaults with :DIRECTORY
3951 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3952 (reported by James Y Knight)
3953 * bug fix: saving large (>2GB) cores on x86-64 now works
3954 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3955 constant index and a (simple-array (signed-byte 32)) array
3956 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3957 error (patch by Robert J. Macomber)
3958 * feature: TIME now displays the amount of run-time spent in GC
3959 * bug fix: The debugger now does a better job of respecting
3960 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3961 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3962 workaround for bug 403.)
3963 * bug fix: floating point exception handling now works on FreeBSD
3964 (thanks to NIIMI Satoshi)
3965 * fixed some bugs revealed by Paul Dietz' test suite:
3966 ** MISC.641: LET-conversion were not supposed to work in late
3968 * improvements to the Win32/x86 port:
3969 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3970 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3972 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3973 * new feature: source path information is generated for macro-expansion
3974 errors for use in IDE's like Slime (thanks to Helmut Eller)
3975 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3976 * bug fix: compiler does not loop forever on an invalid type in
3978 * improvement: compilation of most CLOS applications is significantly
3980 * optimization: added a limited bytecode compiler for simple toplevel
3981 forms, speeding up compilation and FASL loading
3982 * bug fix: the statistical profiler now properly distinguishes anonymous
3985 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3986 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3987 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3988 into subclasses of the finalized class. Now user calls to
3989 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3990 system return before any subclasses are finalized.
3991 * minor incompatible change: The reader no longer ignores errors
3992 regarding non-existent packages in #+ and #- feature tests.
3993 * new feature: command line options --no-sysinit, --no-userinit to
3994 inhibit loading the corresponding init files
3995 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3996 for sending data through UDP sockets (thanks to François-René Rideau)
3997 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3998 error is signalled instead (thanks to François-René Rideau)
3999 * minor incompatible change: Error signalling behaviour of lexical
4000 operations violating package locks has changed slightly. Refer to
4001 documentation on package locks for details.
4002 * enhancement: EVAL can process IF-expressions without resorting to the
4004 * bug fix: Some operations involving SIN, COS, or TAN weren't being
4005 constant-folded properly due to missing out-of-line functions.
4006 (reported by Mika Pihlajamäki)
4007 * bug fix: LISTEN sometimes returned T even in cases where no data was
4008 immediately available from the stream
4009 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
4010 were reversed. (reported by Levente Mészáros)
4011 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
4012 when given a vector displaced to an adjustable array. (reported
4014 * bug fix: derivation of float boundaries from numbers outside the
4015 appropriate float range (reported by John Wiseman)
4016 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
4018 * bug fix: precomputing cache entries for generic functions with
4019 some subclasses of specializers as yet invalid does not attempt to
4020 fill a cache line with a negative offset. (reported by Levente
4022 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
4023 allow condition class objects as arguments to DOCUMENTATION and
4024 (SETF DOCUMENTATION); only find and set documentation for
4025 structure names for the STRUCTURE doc-type. (suggested by Gary
4027 * improvements to the Win32/x86 port:
4028 ** (user-homedir-pathname) and default initialization file
4029 locations now know about the user's "Documents and Settings"
4030 directory (thanks to Yaroslav Kavenchuk)
4031 ** run-program is implemented (thanks to Mike Thomas)
4032 ** sockets support (thanks to Timothy Ritchey)
4033 ** better backtrace support (thanks to Alastair Bridgewater)
4034 ** sb-grovel supported
4035 ** asdf-install and sb-posix work somewhat
4036 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
4037 * improvements to the Solaris/x86 port:
4038 ** works on Solaris 11/Solaris Express
4039 ** floating-point exception handling support
4040 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
4041 * fixed some bugs revealed by Paul Dietz' test suite:
4042 ** REMOVE-METHOD returns its generic function argument even when
4043 the method is not one of the generic functions' methods.
4044 ** objects declared as MEMBER types can be admissible arguments to
4045 structure accessors.
4046 ** printing characters should simply be printed by the FORMAT ~:C
4048 ** compiler failure when compiling functions with hairy constant
4049 defaults for optional parameters.
4050 ** compiler produces wrong code when MAYBE-INLINE-expanding a
4051 function, which is already optimized.
4053 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
4054 * new platform: experimental support for SBCL x86/Darwin, including
4055 MacOS X 10.4.5 on Intel.
4056 * new feature: Unicode character names are now known to the system
4057 (through CHAR-NAME and NAME-CHAR).
4058 * new feature: the filesystem location of SBCL's core file is
4059 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
4060 * minor incompatible change: the contrib modules SB-POSIX and
4061 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
4062 this change is to make it easier to distribute
4063 location-independent binaries.
4064 * bug fix: as implied by AMOP, standardized classes no longer have
4065 slots named by external symbols of public packages. (reported by
4067 * optimization: calling functions via constant symbols -- as in
4068 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
4069 via the function object as in (FUNCALL #'FOO).
4070 * optimization: on x86 and x86-64, the calling convention for the
4071 case of dealing with an unknown number of values has been altered
4072 to be friendlier to the prediction heuristics implemented,
4073 particularly with reference to CALL and RET pairing. (thanks to
4074 Alastair Bridgewater)
4075 * optimization: on x86, the code for access to thread-local symbol
4076 values and binding/unbinding of thread-local symbols is smaller.
4077 (thanks to Alastair Bridgewater)
4078 * enhancement: CONSTANTP is now able to determine constantness of
4079 more complex forms, including calls to constant-foldable standardized
4080 functions and some special forms beyond QUOTE.
4081 * fixed bug: occasional GC crashes on Solaris/x86
4082 * optimization: x86-64 supports stack allocation of results of simple
4083 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
4084 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
4085 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
4086 (thanks to James Knight)
4087 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
4088 by the standard (thanks to Stephen Compall)
4090 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
4091 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
4092 be used for bundling the runtime and the core file into one
4093 executable binary. This feature is not currently supported on all SBCL
4094 platforms. (thanks to James Bielman and NIIMI Satoshi)
4095 * new feature: a generational or ephemeral garbage collector is now
4096 the default on the PowerPC platform (both Linux and Darwin). The
4097 old Cheney (stop and copy) collector is a build-time option.
4098 (thanks to Cyrus Harmon, after Raymond Toy)
4099 * minor incompatible change: the method by which SBCL finds its
4100 contributed modules has changed; it no longer relies on symbolic
4101 links from an $SBCL_HOME/systems directory, but searches directly
4102 in the subdirectories of $SBCL_HOME.
4103 * enhancement: the dynamic heap size on the Linux/PPC platform is
4104 markedly larger, even using the older Cheney garbage collector.
4105 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
4106 certain complicated string types. (reported by Gary King)
4107 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
4108 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
4109 * fixed bug: DOCUMENTATION on structures no longer signals an
4110 error if no structure type of the right name exists. (reported by
4112 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
4113 applicable non-standard primary or :AROUND method on
4114 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
4115 no longer cause unbound variable errors. (reported by Kevin Reid)
4116 * fixed bug: metacircle resolution in cases where methods have slots
4117 added before the slots from STANDARD-METHOD. (reported by Jean
4119 * fixed bug: the Power PC assembly code for calling into lisp
4120 sometimes computed its return address wrongly (depending on the
4121 15th bit of the address, fixed at link time). This used to
4122 manifest itself in a segmentation violation while building PCL.
4123 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
4124 many others over the years)
4125 * fixed bug: ROOM no longer reports silly numbers for stack usage if
4126 the stack pointer (treated as a signed integer) is negative.
4127 (thanks to Peter van Eynde)
4129 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
4130 * new platform: experimental support for the Windows operating
4131 system has been added. (thanks to Alastair Bridgewater)
4132 * fixed several bugs in and robustified the PPC FFI (including
4133 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
4134 * bug fix: allow non-simple string symbol names (reported by Paul
4136 * bug fix: interrupt handling on NetBSD (thanks to Richard M
4138 * bug fix: saving a core corrupted callbacks on x86/x86-64
4139 * bug fix: closed a loophole in metacircularity detection and
4140 grounding in the PCL implementation of CLOS.
4141 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
4142 (reported by tomppa on #lisp)
4143 * bug fix: clear the direction flag on Lisp -> C transitions, as
4144 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
4145 (reported by Andrej Grozin and Hendrik Maryns)
4146 * optimization: major improvements to GC efficiency on GENCGC platforms
4147 * optimization: faster implementation of EQUAL
4148 * optimization: emit more efficient opcodes for some common
4149 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
4150 * optimization: several other minor code-generation improvements on x86-64
4151 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
4153 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
4154 * minor incompatible change: (SETF CLASS-NAME) and (SETF
4155 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
4156 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
4157 by ANSI as a generic function, and for consistency (SETF
4158 GENERIC-FUNCTION-NAME) is treated likewise.
4159 * fixed bug #233.b: make constraint propagation notice when a variable
4160 value is changed after it is referenced but before it is used
4161 * fixed bug #296: no more arbitrary behaviour from filenames with
4162 odd characters as --load arguments. (reported by Adam Warner)
4163 * fixed bug #390: :CHARACTER-SET pathname components now work as
4164 expected. (reported by Tim Daly Jr)
4165 * fixed bug #391: complicated :TYPE intersections in slot
4166 definitions no longer cause an error in PCL internals.
4167 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
4168 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
4169 returning the number of octets which would be written to the
4170 file-stream. (thanks to Robert J. Macomber)
4171 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
4172 arguments to the internal stream functions. (thanks to David
4174 * bug fix: stack exhaustion is now handled on the x86/SunOS
4175 platform. (thanks to Daisuke Homma)
4176 * bug fix: more accurate ROOM results on GENCGC platforms
4177 * optimization: improved type inference for arithmetic-for
4178 index variables in LOOP
4179 * optimization: faster floating-point SQRT on x86-64
4180 * fixed some bugs revealed by Paul Dietz' test suite:
4181 ** DOCUMENTATION returns NIL instead of "" for method combinations
4182 that don't have a docstring
4184 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
4185 * minor incompatible change: (SETF CLASS-NAME) and (SETF
4186 GENERIC-FUNCTION-NAME) are no longer generic functions, and
4187 therefore are not customizeable by user code (as seems to be at
4188 least permitted and maybe required by AMOP). As a consolation,
4189 however, the SBCL implementation of these functions now calls
4190 REINITIALIZE-INSTANCE as specified by AMOP.
4191 * bug fix: slot-definition documentation is propagated as per ANSI
4192 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
4193 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
4194 argument, as do eslotd initialization methods. (from Pascal
4195 Costanza's "Closer" project)
4196 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
4197 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
4199 * bug fix: it is now possible to have more than one subclass of
4200 STANDARD-GENERIC-FUNCTION without causing stack overflow.
4201 (reported by Bruno Haible, Pascal Costanza and others)
4202 * bug fix: the dependent update protocol now works for generic
4203 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
4204 and Pascal Costanza)
4205 * bug fix: condition-class instances corresponding to
4206 DEFINE-CONDITION forms are now created eagerly. (reported by
4207 Kalle Olavi Niemitalo on comp.lang.lisp)
4208 * bug fix: floating point printing is more accurate in some
4209 circumstances. (thanks to Simon Alexander)
4210 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
4211 merged with *DEFAULT-PATHNAME-DEFAULTS*.
4212 * bug fix: callbacks on OS X now preserve stack-alignment.
4213 (thanks to Cyrus Harmon)
4214 * enhancement: the x86-64 disassembler is much better at
4215 disassembling SSE instructions. (thanks to Lutz Euler)
4216 * enhancement: CHECK-TYPE on a variable now allows type-inference
4217 (thanks to Vincent Arkesteijn)
4218 * optimization: improved performance of EUC-JP external format.
4219 (thanks to NIIMI Satoshi)
4220 * optimization: performance improvements to IO on file streams of
4221 :ELEMENT-TYPE CHARACTER
4222 * optimization: much faster memory allocation on x86-64
4223 * optimization: faster garbage collections (latency and throughput)
4225 * optimization: faster bignum subtraction and division on x86 and x86-64
4226 (thanks to Lutz Euler)
4227 * optimization: more accurate type-inference for loops that use a
4228 floating point index variable or a negative step.
4230 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
4231 * bug fix: add a workaround to SBCL looping infinitely at startup on
4232 Linux kernels with apparently buggy implementations of personality().
4233 (thanks to Svein Ove Aas)
4234 * bug fix: Unicode symbols are correctly printed in LDB backtraces
4235 (thanks to David Lichteblau)
4236 * bug fix: local bindings shadow global symbol macros for
4237 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
4238 * optimization: non-open coded uses of numeric comparison operators
4239 (e.g. >) no longer cons when called with more than one parameter
4240 on platforms supporting dynamic-extent allocation.
4241 * enhancement: saving cores with foreign code loaded is now supported
4242 on MIPS/Linux in addition to the previously supported platforms.
4243 * bug fix: FIND-RESTART now tests for activity, not applicability when given
4244 a restart object as identifier. (reported by Helmut Eller for CMUCL)
4245 * bug fix: division by zero in sb-sprof when no samples were collected
4246 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
4247 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
4248 (thanks to Alexander Kjeldaas)
4249 * new feature: ignoring the return values of destructive functions
4250 like NREVERSE signals a compile-time style-warning.
4251 (thanks to Kevin Reid)
4252 * new feature: the alignment of alien structure fields can be
4253 explicitly specified. (thanks to Cyrus Harmon)
4254 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
4255 and dump core on SIGQUIT
4257 ** incompatible change: threads do not inherit values of specials
4258 from their parents (see manual)
4259 ** bug fix: threads stacks belonging to dead threads are freed by the
4260 next exiting thread, no need to gc to collect thread stacks anymore
4261 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
4262 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
4263 ** bug fix: dynamic variable and thread start related gc lossage
4264 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
4266 * fixed some bugs revealed by Paul Dietz' test suite:
4267 ** SUBTYPEP is slightly more accurate on heinously complicated
4268 CONS types where some of the members have uncertain (in the
4269 NIL, NIL sense) type relationships to each other.
4271 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
4272 no longer purified unless :PURIFY T is explicitly specified.
4273 ** Non-purified cores are significantly smaller than before
4275 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
4276 * new feature: timers based on Zach Beane's excellent timer package
4277 * added support for the following external formats: koi8-u,
4278 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
4279 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
4280 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
4281 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
4282 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
4283 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
4284 * incompatible change: a threaded SBCL will no longer revert to
4285 non-threaded mode on non-NPTL systems, but refuse to start entirely.
4286 * bug fix: interrupts are disabled until startup is complete; no
4287 more sigsegvs when receiving a signal to soon
4288 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
4290 * bug fix: add a workaround for the memory randomization features in
4291 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
4292 workaround will only be in effect on systems with the proc filesystem
4294 * bug fix: printing objects of type HASH-TABLE signals a
4295 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
4297 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
4298 have been running for over 50 days. (reported by Gilbert Baumann)
4299 * bug fix: the logic for getting names of functions gets less
4300 confused when confronded with alternate-metaclass
4301 funcallable-instances. (reported by Cyrus Harmon)
4302 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
4303 consistent, even on internal alternate-metaclass objects.
4304 * bug fix: flush closure information collected by physical
4305 environment analysis prepass before the main pass. (bug reported
4307 * bug fix: compiler pack phase does not modify a hashtable, which is
4308 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
4309 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
4310 may be expanded. (reported by Alexander <malishev> on c.l.l)
4311 * bug fix: no more style-warnings when compiling code using LAST
4312 under high-SPEED low-SPACE settings. (reported by David Wallin
4314 * fixed some incompatibilities between SBCL's MOP and the MOP
4316 ** the METAOBJECT class is now implemented;
4317 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
4318 STANDARD-OBJECT, as required;
4319 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
4320 now compatible (as required by VALIDATE-SUPERCLASS); there
4321 remains a consistency requirement over the presence or absence
4322 of the FUNCTION class in the superclass list of finalized
4323 classes; see the manual for more details;
4324 ** the :AROUND method for COMPUTE-SLOTS on
4325 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
4326 requested slot ordering.
4328 ** bug fix: parent thread now can be gc'ed even with a live
4330 ** bug fix: binding a special with PROGV to no value is not
4331 the same as that symbol not having been bound (thanks to
4333 ** bug fix: binding specials is thread safe (thanks to
4335 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
4336 and SB-SPROF do not die with 'no handler for signal XX in
4337 interrupt_handle_now(..)' anymore
4338 ** bug fix: WITH-TIMEOUT works with multiple running threads
4339 * fixed some bugs revealed by Paul Dietz' test suite:
4340 ** ENSURE-GENERIC-FUNCTION should take a method class object for
4341 the :method-class keyword argument.
4343 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
4344 * new port: the Solaris operating system on x86 processors is now
4345 mostly supported, though some rough edges in the environment
4346 remain. (thanks to Daisuke Homma)
4347 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
4348 space for its heap. (thanks to Thiemo Seufer)
4349 * optimization: SBCL on MIPS platforms now supports dynamic-extent
4350 closures. (thanks to Thiemo Seufer)
4351 * minor incompatible change: eof selects abort in the debugger.
4352 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
4353 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
4355 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
4356 deprecated, and will go away in a future revision of SBCL.
4357 * minor incompatible change: GC-ON and GC-OFF are no longer
4358 implemented with a counter, it does not matter how many times gc
4359 is switched on or off
4360 * bug fix: discriminating functions for generic function classes
4361 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
4362 make invalid assumptions about method precedence order. (reported
4364 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
4365 platforms. (thanks to Thiemo Seufer)
4366 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
4367 * bug fix: correct pathname printing with printer escaping is on.
4368 (thanks to Kevin Reid)
4369 * bug fix: complex VOP definitions in "user-space" no longer trigger
4370 package locks. (reported by Zach Beane)
4371 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
4372 for funcallable-instance functions, and is no different from
4374 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
4375 characters in the current readtable. (reported by Nicholas Neuss)
4376 * bug fix: SUBTYPEP on various CONS types returns more a more
4377 accurate acknowledgment of its certainty.
4378 * optimizations: REMOVE-DUPLICATES now runs in linear time on
4379 lists in some cases. This partially fixes bug 384.
4380 * flush all standard streams before prompting in the REPL and the
4382 * bug fix: signal handling and triggering gc do not conflict
4383 directly anymore, in particular a high frequency sb-sprof does
4384 not prevent gc from running
4385 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
4386 approximation for timezone and DST information between the
4387 universal time epoch and the smallest negative 32-bit time_t.
4388 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
4389 year 1899 so long as the encoded time is non-negative.
4390 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
4391 the correct answer for non-constant rotate amounts when performing
4392 an inline 32-bit rotation.
4394 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
4395 there is only one thread in the session
4396 ** bug fix: memory leak for streams created in one thread and
4397 written to in another
4398 ** bug fix: lockup when compiled with gcc4
4399 ** bug fix: race that allows the gc to be triggered when gc is
4401 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
4402 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
4404 ** bug fix: finished threads are gc'ed properly
4405 * fixed some bugs revealed by Paul Dietz' test suite:
4406 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
4407 has arguments with a different set of applicable methods from
4408 the orignal arguments.
4409 ** The type error thrown by MAP now has a correct expected-type
4411 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
4412 name a compiled function.
4413 ** Three MISC tests where a large bignum was improperly coerced to
4414 a float that couldn't represent that bignum during type
4415 derivation were fixed.
4416 ** SUBTYPEP can now handle types involving the negation of a
4417 list-form FUNCTION type.
4418 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
4419 as (COMPLEX (AND RATIO (NOT FIXNUM))).
4420 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
4422 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
4423 * New feature: Experimental support for bivalent streams: streams
4424 opened with :element-type :default now allow character and binary
4425 (unsigned-byte 8) I/O
4426 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
4427 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
4429 * bug fix: no more highly sporadic "couldn't check whether ~S is
4430 readable" when reading a stream and an interrupt hits in the middle
4431 of a select system call
4432 * compiler better recognizes complex arrays (reported by Eduardo
4434 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
4435 for variables on SBCL built with linkage-tables. (reported by Luis
4437 * various error reporting improvements.
4438 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
4439 (Thanks to Thiemo Seufer)
4440 * bug fix: nested reader invokations work correctly
4441 * bug fix: it is possible to have simultaneous references to foreign
4442 code and foreign data with the same name.
4444 ** added x86-64 support
4445 ** incompatible change: the threading api now works with thread
4446 objects instead of thread ids
4447 ** bug fix: threads are protected from signals and interruption when
4448 starting up or going down
4449 ** bug fix: a race where an exiting thread could lose its stack to gc
4450 ** bug fix: don't halt on infinite error in threads if possible
4451 ** fixed numerous gc deadlocks introduced in the pthread merge
4452 ** bug fix: fixed thread safety issues in read and print
4453 ** bug fix: debugger doesn't hang on session lock if interrupted at
4454 an inappropriate moment
4455 ** bug fix: run-program is now thread safe(r)
4456 ** bug fix: inner with-recursive-lock no longer releases the mutex
4457 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
4458 * fixed some bugs revealed by Paul Dietz' test suite:
4459 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
4460 EXPECTED-TYPE slots filled.
4461 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
4463 ** MAKE-CONDITION accepts classes as type-designators.
4464 ** COMPILE may never return NIL.
4465 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
4466 range before calling Unix time functions
4468 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
4469 * numerous signal handling fixes to increase stability
4470 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
4471 * minor incompatible change: we now correctly canonize default
4472 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
4473 as per the MOP, rather than the historical (INITARG INITFUNCTION
4474 INITFORM). (reported by Bruno Haible)
4475 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
4476 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
4477 for more information.
4478 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
4479 pathname is a directory pathname.
4480 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
4481 * dynamic space size on PPC has been increased to 768Mb. (thanks to
4483 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
4484 :METACLASS argument in addition to a class name. (reported by
4485 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
4486 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
4487 (reported by Bruno Haible; patch from Gerd Moellmann)
4488 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
4490 * bug fix: more cleanups to the floating point exception handling on
4491 x86-64 (thanks to James Knight)
4492 * bug fix: the compiler does not try to constant fold calls of
4493 COERCE and BIT-* functions when they return freshly constructed
4494 objects. (reported by Nikodemus Siivola and Paul Dietz)
4495 * optimization: improved the MIPS versions of generic (in the
4496 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
4497 * optimization: direct conversion of (unsigned-byte 32) to floats on
4498 the PowerPC platform.
4499 * optimization: structure instances with raw slots now use less
4500 memory, and probably show better memory locality. (thanks to
4502 * optimization: DYNAMIC-EXTENT declarations for lists and closures
4503 are treated as requests for stack allocation on the x86-64,
4504 Alpha-32, PPC and SPARC platforms.
4505 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
4506 the wrong file descriptor; implementation of SOCKET-OPEN-P.
4507 (thanks to Tony Martinez)
4509 ** gcing a dead thread can no longer lead to lockups
4510 ** threads block signals until they are set up properly
4511 ** errno is no longer shared by threads
4512 ** interrupt-thread restores the eflags register on x86
4513 ** fixed some lockups due to gc/thread interaction
4514 * fixed some bugs revealed by Paul Dietz' test suite:
4515 ** invalid dotted lists no longer raise a read error when
4516 *READ-SUPPRESS* is T
4517 ** signal an error if a symbol that names a declaration is used
4518 as the name of a type, or vice versa
4519 ** allow using the (declare (typespec var*)) abbreviation for
4520 (declare (type typespec var*)) with all type specifiers
4521 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
4522 ** always return NIL from PPRINT-POP when OBJECT is NIL
4523 ** don't signal errors when pretty-printing malformed LABELS,
4524 FLET or MACROLET forms
4525 ** declarations in a DOLIST body are also in scope for the
4527 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
4529 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
4532 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
4533 * fixed cross-compiler leakages that prevented building a 32-bit
4534 target with a 64-bit host compiler.
4535 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
4536 opened with :IF-EXISTS :OVERWRITE.
4537 * fixed bug 281: error for an invalid qualifier in a short-form method
4538 combination method is not signalled until the faulty method is called.
4539 * bug fix: iteration variable type inferrer failed to deal with open
4540 intervals. (reported by Alan Shields)
4541 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
4542 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
4543 or more runtime options were provided to the sbcl binary.
4544 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
4545 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
4546 * optimization: there's now a fast-path for fixnum arguments in the
4547 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
4548 * optimization: the code generated on x86-64 is more compact thanks
4549 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
4550 * bug fix: floating-point exception handling now partly works on
4551 x86-64. (Thanks to James Knight)
4552 * improvement to the MIPS backend from Thiemo Seufer: C-style
4553 64-bit long long arguments and return values to alien functions
4555 * fixed some bugs revealed by Paul Dietz' test suite:
4556 ** the type-error signalled from WARN has a filled-in DATUM slot.
4557 ** the type-error required when a stream is not associated with
4558 a file has the stream as its datum.
4559 ** type-errors on single-floats on x86-64 no longer have
4560 :INVALID-OBJECT as the datum
4561 ** the type-errors signalled for invalid function names now have
4562 a correct expected type
4563 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
4564 for structures defined with a :TYPE. Documentation strings for
4565 typed structures are no longer immediately discarded
4566 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
4567 broadcast streams and synonym streams. FILE-LENGTH now also works
4568 on broadcast streams.
4570 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
4571 * incompatible change: the --noprogrammer option, deprecated since
4572 version 0.7.5, has been removed. Please use the equivalent
4573 --disable-debugger option instead.
4574 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
4576 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
4577 inoperational for a while now) has been completely removed.
4578 * null lexical environments are now printed as #<NULL-LEXENV>,
4579 significantly reducing the amount of clutter in typical backtraces.
4580 * documentation on weak pointers, finalization, and after GC hooks
4581 has been added to the manual.
4582 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
4583 as other specialized array types, is much faster. SUBSEQ and
4584 COPY-SEQ on such arrays have also been sped up.
4585 * optimization: EQL is now more efficient when at least other argument
4586 is known to be of type (OR FIXNUM (NOT NUMBER)).
4587 * fixed bug: the runtime is now less vulnerable to changes in the
4588 size of the SBCL object on OS X, and virtual memory is reserved for
4589 all spaces that need to be at a fixed address.
4590 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
4591 * fixed bug: finalizers and after GC hooks that cause consing are now
4593 * fixed bug: compiler error messages and summaries are now printed to
4594 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
4595 * fixed inference of the upper bound of an iteration variable.
4596 (reported by Rajat Datta).
4597 * fixed bug 211e: calling local functions with duplicated constant
4598 keyword argument no longer causes a bogus style warning about an
4600 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
4601 ftype declaration to be disregarded. (reported by Dave Roberts)
4602 * fixed bug 373: caused by erronous compilation of references to alien
4603 variables in the runtime on ppc/darwin.
4604 * fixed bug 376: CONJUGATE type deriver.
4605 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
4606 (reported by Baughn on #lisp)
4607 * a cross-compiler bug on non-x86 platforms has been identified and
4608 fixed. (thanks to Bruno Haible)
4609 * improvements to the MIPS runtime code for increased stability.
4610 (thanks to Thiemo Seufer)
4611 * increased the maximimum compact environment size to allow
4612 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
4613 * partial workaround for bug 135: don't name the function we're
4614 calling for hairy cases of EVAL, so as not to accumulate one environment
4615 entry per call to EVAL. (reported by Kevin Reid)
4616 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
4617 * optimization: type testing for non-vector arrays should be faster.
4618 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
4620 * bug fix: setting 31st element of a bit vector to zero did not work
4622 * bug fix: redefining a class definition which failed due to a
4623 previous accessor / function clash now works (but see BUGS entry
4624 #380 for more problems in this area). (thanks to Zach Beane)
4625 * the long form of DEFINE-METHOD-COMBINATION disables method group
4626 checking when given a single method group with pattern *. (thanks
4628 * on x86 compiler supports stack allocation of results of simple
4629 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
4630 * support for building and running on Mac OS X 10.4 "Tiger" has been added
4631 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
4632 * fixed some bugs related to Unicode integration:
4633 ** the restarts for recovering from input and output encoding
4634 errors only appear when there is in fact such an error to
4636 * fixed some bugs revealed by Paul Dietz' test suite:
4637 ** MISC.549 and similar: late transformation of unsafe type
4638 assertions into derived types caused unexpected code
4640 ** SCALE-FLOAT type deriver is less wrong.
4641 ** type derivers for EXP, LOG and similar functions compute result
4642 types for complex arguments better.
4643 ** (MISC.563) CONJUGATE type deriver works for very restricted
4645 ** out-of-line type testers for character strings are available.
4646 ** EQUAL compiler transform understands specialness of objects
4648 ** accessing double-floats stored on the stack now works on x86-64.
4649 ** debugger internals could sometimes create invalid lispobjs,
4650 resulting in GC crashes.
4651 ** MISC.548: type check weakening can convert required type into
4653 ** initialization forms for bindings are not in scope of free special
4656 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
4657 * incompatible change: thread support for non-NPTL systems has
4658 been removed - locking is buggy and unreliable. A threaded
4659 SBCL build will now warn at startup and refuse to create
4660 new threads, unless futex support is detected in the kernel
4661 * incompatible change: the top level REPL now has only an ABORT
4662 restart associated with it, not TOPLEVEL and ABORT as it used to.
4663 TOP and TOPLEVEL are now available as debugger commands for
4664 returning to the top level.
4665 * incompatible change: forms evaluated in the REPL now use the
4666 global optimization policy.
4667 * incompatible change: user- and system-initialization files are
4668 no longer processed with LOAD, but by READ and EVAL; hence the
4669 global optimization policy, startup package, readtable, etc,
4671 * The .fasl file format number has been incremented because of
4672 various incompatible changes.
4673 * internal entry point details and argument counts no longer appear
4674 in backtraces unless explicitly requested by setting
4675 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
4676 * built-in and standard functions no longer have names like "top
4677 level local call to FOO".
4678 * fixed bug 32: functions defined in non-null lexical environments
4679 now have more legible printed representation
4680 * fixed bug 33: functions defined in non-null lexical environemnts
4681 are now more amenable to inspection by INSPECT.
4682 * workaround for bug 354: XEPs no longer appear in backtraces unless
4683 explicitly requested.
4684 * fixed bug: receiving the signal which results from attempting to
4685 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
4686 SIGBUS on other *BSDs) on architectures where the C stack is also
4687 the Lisp stack (x86 and x86-64) from foreign code no longer leads
4688 to debugger confusion or wild instability. (reported by Cheuksan
4690 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
4691 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
4692 (reported by Lutz Euler)
4693 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
4694 compiled code. (reported by Paul Dietz)
4695 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
4696 specialized parameter to a method to something that is not TYPEP
4697 the specializer is now possible.
4698 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
4699 face of package deletion.
4700 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
4701 pathname. (reported by David Tolpin on c.l.l)
4702 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
4703 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
4704 STRING-STREAM and FILE-STREAM, respectively.
4705 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
4706 than previously; in addition, its test suite is now run on build.
4707 (thanks to Luke Gorrie)
4708 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
4709 * optimization: added a immediate representation for single-floats
4711 * fixed some bugs revealed by Paul Dietz' test suite:
4712 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
4713 ** attempting to create a package with a colliding nickname causes
4714 correctable errors to be signalled.
4715 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
4716 ** several x86-64 backend bugs related to sign-extension of immediate
4719 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
4720 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
4721 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
4723 * fixed loading of multiply forward-referenced layouts.
4724 (thanks to Cheuksan Wang)
4725 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
4726 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
4727 (see COMPILE-FILE documentation for details of :PRINT option)
4728 * fixed bugs 19 and 317: fixed-format floating point printing is
4729 more accurate. This also fixes a bug reported by Adam Warner
4730 related to the ~@F format directive.
4731 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
4733 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
4734 dispatch table if the from-char is a dispatch macro character.
4735 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
4736 by the wordsize no longer ignore the last word. (reported by Lutz
4738 * fixed bug in type checking of dynamic-extent variables. (reported
4740 * optimization: sequence traversal functions use their freedom to
4741 coerce function designators to functions.
4742 * optimization: code with many calls to CLOS methods specialized on
4743 CLOS classes has had redundant type checks removed.
4744 * optimization: added declarations to speed up operations that access
4745 the internal character database (for example STRING-UPCASE)
4746 * optimization: comparison operations between floats and sufficiently small
4747 fixnums no longer create extra rationals
4748 * fixed some bugs related to Unicode integration:
4749 ** portions of multibyte characters at the end of buffers for
4750 character-based file input are correctly transferred to the
4751 start of the buffer at the next read.
4752 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
4753 passing it through to OPEN.
4754 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
4755 argument given to internal calls to OPEN.
4756 ** the built-in comment readers (introduced by character sequences
4757 ";" and "#|") are more forgiving to encoding errors; they will
4758 STYLE-WARN and then attempt to resync the stream at a character
4759 boundary. (thanks to Teemu Kalvas)
4760 * fixed some bugs in the x86-64 port:
4761 ** Negative short int return values from c-calls are sign-extended
4763 ** The stack is aligned to 16-bytes for c-calls, as required by
4764 the ABI. (thanks to Cheuksan Wang)
4765 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
4766 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
4767 for enums. (thanks to Vincent Arkesteijn)
4768 ** Multiple small optimizations and bugfixes for floating point
4770 * fixed some bugs revealed by Paul Dietz' test suite:
4771 ** Space, Tab, Linefeed, Return and Page have the invalid
4772 secondary constituent character trait.
4773 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
4775 ** WITH-INPUT-FROM-STRING should only update the index place on
4777 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
4778 works more reliably.
4779 ** Bit-array operations (BIT-AND and similar) worked incorrectly
4780 with one-dimensional arrays with fill pointers.
4781 ** TYPE-OF failed on a complex with an integer realpart and a
4783 ** compiler failure during type inference for the code of form
4784 (IF (EQL X (THE ...)) ...) (MISC.535).
4786 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
4787 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
4788 platform. The port supports 61-bit fixnums, large memory spaces
4789 and reloading shared object files.
4790 * enhancement: saving cores with foreign code loaded is now
4791 supported on ppc/Darwin in addition to the previously supported
4793 * enhancement: the statistical profiler now walks deeper into the
4794 call stack for more meaningful call-graphs and accrued time
4795 reports (x86/x86-64 only). It also now reports time spent in
4797 * enhancement: it is now possible to trace most individual methods
4798 of a generic function in addition to tracing the generic function
4800 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
4802 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
4803 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
4804 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
4805 produces an error. (thanks to Vincent Arkesteijn)
4806 * bug fix: NAMESTRING on pathnames with :WILD components in their
4807 directories works correctly. (thanks to Artem V. Andreev)
4808 * fixed bug 125: compiler preserves identity of closures. (reported
4810 * bug fixed: functions with &REST arguments sometimes failed with
4811 "Undefined function" when compiled with (DEBUG 3). (reported by
4813 * bug fix: overflow during compiling of setting element of a bit
4814 vector with constant index and value. (reported by Timmy Douglas)
4815 * build fix: fixed the dependence on *LOAD-PATHNAME* and
4816 *COMPILE-FILE-PATHNAME* being absolute pathnames.
4817 * on x86 compiler partially supports stack allocation of dynamic-extent
4819 * GO and RETURN-FROM do not check the extent of their exit points
4820 when compiled with SAFETY 0.
4821 * fixed some bugs related to Unicode integration:
4822 ** encoding and decoding errors are now much more robustly
4823 handled; it should now be possible to recover even from invalid
4824 input or output to the terminal. (thanks to Teemu Kalvas)
4825 ** provided a first cut at implementing STRING-TO-OCTETS and
4826 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
4827 ** altered the SB-MD5 contributed module slightly, changing the
4828 interface just enough for it to be supportable for builds where
4829 lisp characters are not eight bits.
4830 * fixed some bugs revealed by Paul Dietz' test suite:
4831 ** the FORMATTER-generated functions for ~V[ conditionals require
4832 the correct number of arguments.
4833 ** READ-FROM-STRING returns the mandated second value when applied
4834 to displaced strings.
4835 ** the #\Rubout and #\Backspace characters are treated as invalid
4836 constituent characters by the tokenizer.
4838 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
4839 * new feature: reloading changed shared object files with
4840 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4841 * new feature: references to foreign variables and functions
4842 can now be compiled and loaded before the corresponding shared
4843 object file is loaded, as long as the foreign definitions are
4844 available at runtime.
4845 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
4846 supported. (thanks to Dan Debertin)
4847 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
4848 just keywords. (thanks to Vincent Arkesteijn)
4849 * fixed bug #331: structure-class instances corresponding to
4850 DEFSTRUCT forms are now created eagerly.
4851 * fixed bug #345: backtraces from calls to undefined functions work
4852 on x86 as well. Related bug #61 is now also partially fixed on x86
4853 (backtraces from throws to unknown catch tags.)
4854 * bug fix: lambda-list parsing is now stricter vrt. order and number
4855 of lambda-list keywords.
4856 * bug fix: as specified by AMOP, an error is signalled if a
4857 class-option appears multiple times in a DEFCLASS form. (reported
4859 * bug fix: RANDOM can be compiled when the compiler derives the type
4860 of its numeric argument as a disjoint set of small integers.
4861 (reported by Paul Dietz)
4862 * bug fix: starting a core saved with shared objects loaded when
4863 those objects are not available no longer causes threaded SBCL to
4864 hang. (reported by Sean Ross)
4865 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
4867 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
4868 argument, which must always be NIL. (reported by Kalle Niemitalo)
4869 * bug fix: printing 1.0d+23 no longer results in an error.
4870 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
4871 * bug fix: structure slot setters preserve evaluation order. (thanks
4873 * fixed some bugs related to Unicode integration:
4874 ** RUN-PROGRAM can allow its child to take input from a Lisp
4875 stream. (reported by Stefan Scholl)
4876 ** ASDF-INSTALL successfully downloads .tar.gz files in all
4877 locales. (reported by Ken Causey)
4878 * fixed some bugs revealed by Paul Dietz' test suite:
4879 ** INCF, DECF and REMF evaluate their place form as specified in
4881 ** FORMATTER expands ~{ ~} iteration directives with V or #
4882 parameters correctly.
4883 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4884 consequent uses no arguments correctly.
4885 ** the system has a partial understanding of the (COMPLEX RATIO)
4887 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4890 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4891 * new feature: a build-time option (controlled by the :SB-UNICODE
4892 keyword feature, enabled by default) for building the system with
4893 support for the entire 21-bit character space defined by the
4895 * new feature: the system now has rudimentary external-format
4896 support; the primary user-visible change at this time is that
4897 characters with the high bit set (such as lower-case-e-acute) will
4898 print correctly to a terminal in a UTF-8 environment.
4899 * minor incompatible change: BASE-CHAR no longer names a class;
4900 however, CHARACTER continues to do so, as required by ANSI.
4901 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4902 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4903 has been moved to the SB-EXT package (temporarily re-exported from
4905 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4906 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4908 * fixed bug #351: better error-handlind and reporting for malformed
4910 * fixed bug #350: bignum-printing is now more memory-efficient,
4911 allowing printing of very large bignums, eg. (expt 2 10000000).
4912 (reported by Bruno Haible)
4913 * fixed bug #302: better primitive-type selection for intersection
4915 * fixed bug #308: non-graphic characters now all have names, as
4916 required. (reported by Bruno Haible)
4917 * bug fix: redefining a class with different superclasses now correctly
4918 removes it from the direct-subclasses of its previous superclasses.
4919 (reported by David Morse)
4920 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4921 new value now works. (reported by Bruno Haible)
4922 * bug fix: correct canonicalization of multiple non-standard slot
4923 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4924 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4925 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4926 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4927 now exists, an signals an error.
4928 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4929 during macroexpansion for non-iteration variables as well. (reported
4930 by Bruno Haible for CMUCL)
4931 * bug fix: Cyclic structures and unprintable objects in compiler
4932 messages no longer cause errors. (reported by Bruno Haible)
4933 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4934 and READ-FROM-STRING all now return a primary value of NIL if
4935 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4936 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4937 (reported by Bruno Haible for CMUCL)
4938 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4939 do not designate a condition. (reported by Bruno Haible for
4941 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4942 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4943 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4944 permitting resolution in favour of any of the conflicting symbols.
4945 (reported by Bruno Haible for CMUCL)
4946 * bug fix: EQUAL compiler optimizations is less aggressive on
4947 strings which can potentially compare true despite having distinct
4948 specialized array element types.
4949 * bug fix: unit enumerations can be defined without dividing by
4950 zero. (thanks to Vincent Arkesteijn)
4951 * FORMAT compile-time argument count checking has been enhanced.
4952 (report from Bruno Haible for CMUCL)
4953 * a partial workaround for the bug 262: the compiler does not try to
4954 inline-expand a local function doing RETURN-FROM from a deleted
4955 BLOCK. (thanks to Peter Denno for the bug report and to David
4956 Wragg for the simple test case)
4957 * fixed some bugs revealed by Paul Dietz' test suite:
4958 ** RENAME-PACKAGE allows all package designators as new package
4960 ** constraint propagation and lambda variable substitution are
4961 more cautious in dealing with partially deleted code.
4962 ** compiler sometimes lost reoptimization passes.
4963 ** CERROR, given a condition as condition designator, passes its
4964 remaining arguments to the continue format control without
4966 ** Case-altering FORMAT directives work correctly on non-ASCII
4968 ** The REAL type specifier handles bounds outside the floating
4969 point ranges without signalling FLOATING-POINT-OVERFLOW.
4970 ** Functions with IR1-transformations can create intercomponent
4971 references to global functions.
4972 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4974 ** FORMAT ~R treats a nil value for its first parameter correctly.
4976 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4977 * enhancement: saving cores with foreign code loaded is now
4978 supported on x86/NetBSD and sparc/Linux in addition to the previously
4979 supported platforms.
4980 * bug fix: on some platforms repeated installations caused multiple
4981 copies of HTML documentation to be installed -- should not happen
4982 any more. (reported by Stefan Scholl)
4983 * bug fix: parsing self-recursive alien record types multiple times
4984 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4985 original patch by Helmut Eller for CMUCL)
4986 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4987 (thanks to Richard Kreuter)
4988 * bug fix: defining classes whose accessors are methods on existing
4989 generic functions in other (locked) packages no longer signals
4990 bogus package lock violations. (reported by François-René Rideau)
4991 * bug fix: special variables as DEFMETHOD parameters no longer have
4992 associated bogus type declarations. (reported by David Wragg and
4994 * bug fix: read-write consistency on streams of element-type
4995 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4996 * bug fix: redefiniton of the only method of a generic function with
4997 no DEFGENERIC no longer emits a full WARNING. In addition,
4998 redefinition of generic functions with no DEFGENERIC to an
4999 incompatible lambda list now signals an error. (thanks to Zach
5001 * bug fix: DEFGENERIC now works even when there's a function of the
5002 same name in an enclosing lexical environment. (thanks to Zach
5004 * fixed compiler failure, caused by instrumenting code during
5005 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
5006 * optimization: added loop analysis and improved register allocation
5007 * fixed some bugs revealed by Paul Dietz' test suite:
5008 ** POSITION on displaced vectors with non-zero displacement
5009 returns the right answer.
5010 ** (SIMPLE-STRING) is a valid type specifier for sequence
5012 ** *PRINT-LEVEL* handling for slotless structures is pedantically
5014 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
5015 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
5017 ** The justification version of the FORMAT ~< directive treats
5018 non-zero minpad parameter correctly.
5020 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
5021 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
5022 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
5023 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
5024 the supported interface.
5025 * new feature: Single-stepping of code compiled with DEBUG 2 or
5026 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
5027 * new feature: saving cores with foreign code loaded is now
5028 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
5029 Timothy Moore's work for CMUCL)
5030 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
5031 parameters to * instead of NIL if no initform is supplied.
5032 (reported by Johan Bockgaard)
5033 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
5034 correctly when FUNCALL appears as the car of the form. Note:
5035 despite this FUNCALL forms are not currently subject to
5036 compiler-macro expansion. (port of Raymond Toy's fix for the
5037 same from CMUCL, reported by Johan Bockgaard)
5038 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
5039 (thanks for Teemu Kalvas)
5040 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
5041 case instead of terminating the iteration (thanks for Julian
5042 Squires, Sean Champ and Raymond Toy)
5043 * bug fix: incorrect expansion of defgeneric that caused a style
5044 warning. (thanks for Zach Beane)
5045 * bug fix: slot accessor effective method computation works properly
5046 for classes with multiple non-standard applicable methods on
5047 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
5048 * on x86 compiler supports stack allocation of results of LIST and
5049 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
5050 CMUCL implementation by Gerd Moellmann)
5051 * fixed some bugs revealed by Paul Dietz' test suite:
5052 ** FORMAT strings with both the ~<~:;~> form of the justification
5053 directive and pretty-printing directives cause an error.
5055 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
5056 * incompatible change: the internal functions
5057 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
5058 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
5059 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
5060 instead of the old functions.
5061 * new feature: on platforms where "dladdr" is available foreign
5062 function names now appear in backtraces. (based on Helmut Eller's
5064 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
5065 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
5067 * documentation: ASDF manual is now distributed with SBCL.
5068 * bug fix: SBCL can now load its contributed modules with REQUIRE
5069 even if the system-provided entries have been removed from
5070 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
5072 * bug fix: backtraces involving undefined functions or assembly
5073 routines are more informative. (thanks to Brian Downing)
5074 * bug fix: mutually referent alien structures now work correctly.
5075 (reported by Rick Taube)
5076 * bug fix: structures defined by WITH-ALIEN can be referred to
5077 within other definitions in the same WITH-ALIEN.
5078 * bug fix: division operators (MOD, TRUNCATE and the like) with
5079 constant zero divisors and integer dividends no longer generate
5081 * bug fix: provide default methods for INPUT-STREAM-P and
5082 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
5083 * bug fix: improve the detection and resolution of MOP metacycles
5084 (where effective method computation depends on the generic function
5085 having its effective method computed). (reported by Bruno Haible)
5086 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
5087 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
5088 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
5089 * bug fix: pathnames with relative directory components can be
5090 represented relative to default pathnames.
5091 * optimization: in taking the GCD of bignums, reduce the two bignums
5092 to approximately the same size (using Euclid's algorithm) before
5093 applying the more sophisticated binary GCD. (thanks to Juho
5095 * optimization: COUNT on bitvectors now operates word-at-a-time.
5096 * optimization: ASH with a positive, but not necessarily constant,
5097 (leftwards) shift, when in a modular context, is compiled to a
5099 * fixed some bugs revealed by Paul Dietz' test suite:
5100 ** FORMAT variable parameters ("~V<char>") are defaulted properly
5101 if the corresponding argument is NIL.
5102 ** FORMAT directives accepting a minpad parameter treat negative
5104 ** literal commas as character parameters to FORMAT directives are
5106 ** literal spaces directly after ~<Newline> directives within a
5107 format-logical-block (~:< ~@:>) do not induce :FILL-style
5108 conditional newlines.
5109 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
5110 as specified: it no longer includes conditional newlines).
5111 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
5113 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
5114 :PER-LINE-PREFIX argument does not evaluate to a string.
5116 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
5117 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
5118 the manual for details; for now, package locks can be disabled by
5119 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
5120 if no major problems are found then it is likely that they will be
5121 compiled in unconditionally.
5122 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
5123 unsupported operators on all platforms. To load a shared library
5124 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
5125 object file, link it into a shared library outside of SBCL and
5126 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
5128 * bug workaround: ROOM T and the GC were not working together
5129 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
5130 reporting facility aren't preserved. That reporting has been
5131 disabled, so now until and unless someone figures out how to make it
5132 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
5133 * minor incompatible change: as threatened around sbcl-0.8.0, the
5134 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
5135 The symbols are also exported from SB-PCL for backwards
5136 compatibility, but more so than before SB-PCL should be treated as
5137 an implementation-internal package.
5138 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
5140 * the SB-SPROF contrib now works on (most) non-x86 architectures.
5141 It is known as of this release not to work on the Alpha, however.
5142 * fixed bug #167: errors signalled due to illegal syntax in method
5143 bodies are now more legible.
5144 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
5145 designators and can hence be used with TYPEP.
5146 * fixed bug #333: CHECK-TYPE now ensures that the type error
5147 signalled, if any, has the right object to be accessed by
5148 TYPE-ERROR-DATUM. (reported by Tony Martinez)
5149 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
5150 5.1.2.3 for multiple-value place subforms. (reported by Kalle
5152 * fixed bug #334: programmatic addition of slots using specialized
5153 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
5154 and :ALLOCATION :CLASS slots.
5155 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
5156 float exponents. (rereported by Peter Seibel)
5157 * fixed a bug: #\Space (and other whitespace characters) are no
5158 longer considered to be macro characters in standard syntax by
5159 GET-MACRO-CHARACTER.
5160 * fixed bug: initialization of condition class metaobjects no longer
5161 causes an instance of the condition to be created. (reported by
5163 * fixed bug: it is now possible to have slots such that
5164 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
5165 description is neither :INSTANCE nor :CLASS.
5166 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
5167 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
5168 SLOT-VALUE-USING-CLASS), and no longer causes errors with
5169 non-standard SLOT-DEFINITION-ALLOCATION values.
5170 * fixed bugs: various race conditions handling exiting threads.
5171 CL-PPCRE's thread torture test now passes.
5172 * fixed arguably-a-bug: GC time proportional to number of threads in
5173 system even when most of them are idle
5174 * optimization: improved performance of BIT and SBIT on bit-vectors.
5175 * .fasl file incompatibility: The fasl file version number has
5176 been incremented because of changes associated with package locks.
5178 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
5179 * minor incompatible change: the system no longer provides
5180 optimization hints (conditions which are TYPEP
5181 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
5182 mode; these hints are still emitted when higher SPEED optimization
5184 * new contrib module: a sampling profiler (profiling by statistical
5185 sampling, rather than by instrumenting functions) is available as
5186 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
5187 * the behaviour of the standard function ED is now customizeable by
5188 third parties through a hook variable: see ED's documentation
5189 string for information on the protocol.
5190 * the compiler no longer emits efficiency notes for (FUNCALL X)
5191 when the type of X is uncertain under default optimization
5193 * fixed bug 276: mutating a binding of a specialized parameter to a
5194 method to something that is not TYPEP the specializer is now
5196 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
5197 exhibit the required behaviour on the x86 platform. (thanks to
5198 Peter van Eynde, Eric Marsden and Bruno Haible)
5199 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
5200 even for difficult arguments. (reported by Peter Graves)
5201 * fixed bug 141a: the backquote printer now descends quoted
5203 * fixed another bug in backquote printing: no more destructive
5204 modification of the form's list structure. (reported by Brian
5206 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
5207 move between its address being taken and the call to
5208 interrupt_thread, fixing a crashing race condition.
5209 * the SB-POSIX contrib implementation has been adjusted so that it
5210 no longer exhibits ridiculously poor performance when constructing
5211 instances corresponding to C structs.
5213 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
5214 * minor incompatible change: the sb-grovel contrib now treats C
5215 structures as alien (in the sense of SB-ALIEN) objects rather than
5216 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
5217 has implications for memory management of client code
5218 (sb-grovel-returned objects must now be manually managed) and for
5219 type safety (alien objects now have full types).
5220 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
5221 used to control emission of compiler diagnostics, rather than the
5222 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
5223 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
5224 quality should be considered deprecated.
5225 * install.sh now installs the user manual as well
5226 * (not quite a new documentable feature, but worth considering in
5227 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
5228 beginnings of a semantically meaningful condition hierarchy is
5229 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
5231 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
5232 designator as the defaults argument.
5233 * fixed bug: Displaced arrays whose displaced-to array has become
5234 too small now cause ARRAY-DIMENSION to signal an error, providing
5235 for safer bounds-checking. (reported by Bruno Haible)
5236 * fixed bug: DEFCLASS slot definitions with identical :READER and
5237 :WRITER names now signal a reasonable error. (reported by Thomas
5239 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
5241 * fixed bug: Invalid slot specification errors now print correctly.
5242 (thanks to Zach Beane)
5243 * fixed bug 320: Shared to local slot value transfers in class
5244 redefinitions now happen corrently from superclasses as
5245 well. (reported by Bruno Haible)
5246 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
5248 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
5249 improper lists correctly. (reported by Bruno Haible)
5250 * fixed bug 313: source-transform for <fun-name> was erroneously
5251 applied to a call of a value of a variable with name <fun-name>.
5252 (reported by Antonio Menezes Leitao)
5253 * fixed bug 307: The obsolete instance protocol ensures that
5254 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
5255 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
5256 remove dead unknown-values globs from the middle of the stack.
5257 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
5258 easier to resume long computations after using *BREAK-ON-SIGNALS*
5259 to diagnose and fix failures. (thanks to Nikodemus Siivola)
5260 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
5261 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
5262 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
5263 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
5264 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
5266 * fixed a (fairly theoretical) bug in string printing: if
5267 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
5268 does not have array-element-type equal to the most general string
5270 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
5271 function name. (thanks to Nikodemus Siivola)
5272 * fixed bug: compile-time format string checker failed on
5273 non-closed ~{. (reported by Thomas F Burdick)
5274 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
5275 don't warn on legal loop code involving more than one aggregate
5276 boolean. (thanks to Nikodemus Siivola)
5277 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
5278 in keyword position to MAKE-PACKAGE was not being reported as
5280 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
5281 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
5283 * fixed bugs 280 and 312: the checking for multiple definitions in a
5284 file is less likely to become confused by uses of inline
5286 * fixed bug: the #S reader macro performs the keyword coercion
5287 specified for slot names. (reported by Kalle Niemitalo)
5288 * fixed bug: lambda lists may contain symbols whose names start with
5289 & but are not lambda-list-keywords; their occurrence triggers a
5291 * fixed bug 321: define-method-combination argument lambda lists do
5292 not cause invalid code to be generated when &optional or &aux
5293 variables have default values. (reported by Bruno Haible)
5294 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
5295 have CLOS classes; this appears also to have fixed reported
5296 instability in stack exhaustion detection.
5297 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
5298 MUFFLE-WARNING when no associated restart is present is now
5300 * optimization: rearranged the expansion of various defining macros
5301 so that each expands into only one top-level form in a
5302 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
5304 * optimization: used a previously little-used slot in symbols to
5305 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
5307 * fixed some bugs revealed by Paul Dietz' test suite:
5308 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
5310 ** Fixed an optimization bug related to inheritance of initforms
5311 from local to shared slots.
5312 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
5313 ** CAST optimizer forgot to flush argument derived type.
5314 ** print/read consistency on floats is now orders of magnitude
5315 more likely. (thanks also to Bruno Haible for a similar report
5317 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
5318 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
5319 for objects of type REAL. Make it so.
5320 ** SXHASH is specified (infelicitously) to respect similarity,
5321 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
5322 it so. (thanks to Markus Ziegler)
5323 ** on the Alpha, the compiler succeeds in compiling functions
5324 returning a known number of arguments greater than 63.
5325 ** fixed handling of invalid NIL arguments in keyword position
5327 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
5329 ** provided a readably-printable representation for RANDOM-STATE
5331 ** ensured that pathnames, where they have a namestring, always
5332 print using #P"..." syntax.
5334 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
5335 * Support for the forthcoming 2.0 version of the NetBSD kernel
5336 running on x86 hardware has been added. (thanks to Perry
5337 E. Metzger most immediately, and others for their past work)
5338 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
5339 current release version; SBCL's OpenBSD support had been broken
5340 since about the time of OpenBSD's switch to ELF binary format.)
5341 * [placeholder for DX summary]
5342 ** user code with &REST lists declared dynamic-extent, under high
5343 speed or space and low safety and debug optimization policy.
5344 * The manual has been converted to Texinfo format and the debugger
5345 chapter from the cmucl manual has been added.
5346 * A facility has been added to extract documentation strings from
5347 sbcl and store them as Texinfo-formatted snippets for inclusion in
5348 the manual (via Texinfo's @include directive)
5349 * bug fix: compiler emitted division in optimized DEREF. (thanks for
5350 the test case to Dave Roberts)
5351 * bug fix: multidimensional simple arrays loaded from FASLs had fill
5352 pointers. (reported by Sean Ross)
5353 * bug fix: PROFILE output is printed nicely even for large numerical
5354 values. (thanks to Zach Beane)
5355 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
5356 greater than 32 handle EOF correctly.
5357 * bug fix: on X86 an immediate argument of the IMUL instruction is
5358 correctly printed in disassembly. (thanks to Lutz Euler)
5359 * bug fix: class slots in redefined classes preserve their old
5360 values. (thanks to Bruno Haible and Nikodemus Siivola)
5361 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
5362 succeeds. (reported by Marco Baringer)
5363 * fixed some bugs revealed by Paul Dietz' test suite:
5364 ** READ-SEQUENCE now works on ECHO-STREAMs.
5365 ** RATIONALIZE works more according to its specification. (thanks
5368 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
5369 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
5370 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
5371 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
5372 should matter to you only if you rebind the printer control
5373 variables and then find you want different bindings in the
5374 debugger than in the ordinary execution of your program.)
5375 * The runtime build system has been tweaked to support building
5376 (on SPARC/SunOS) using a C compiler which invokes Sun's own
5377 assembler and linker. (thanks to Nikodemus Siivola)
5378 * Unbound, undefined, undeclared variables now trigger full
5379 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
5380 more often programmer error than deliberate exploitation of undefined
5382 * optimization: the hash algorithm for strings has changed to one
5383 that is less vulnerable to spurious collisions. (thanks to Juho
5385 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
5386 needless bounds checking. (thanks to Juho Snellman)
5387 * optimization: implemented multiplication as a modular
5388 (UNSIGNED-BYTE 32) operation on the PPC backend.
5389 * fixed some bugs revealed by Paul Dietz' test suite:
5390 ** ADJUST-ARRAY now copies the datum in a zero rank array if
5392 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
5393 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
5394 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
5396 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
5398 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
5400 ** ECHO-STREAMs no longer attempt to echo the end of file value to
5401 their output stream on EOF from read.
5402 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
5403 have been read to end-of-file.
5404 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
5406 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
5407 description of determination of which consecutive characters
5409 ** Printing the "Space" character with escaping on now yields "#\\ ",
5410 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
5411 ** Reading floating-point numbers with *READ-BASE* set to a number
5412 less than 10 works correctly.
5413 ** Reading floating-point numbers with *READ-BASE* set to a number
5414 more than 10 works correctly.
5415 ** Printing with *PRINT-READABLY* targets the standard readtable, not
5416 the readtable currently in effect.
5418 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
5419 * minor incompatible change: parsing of namestrings on a physical
5420 (Unix) host has changed; numbers after the final #\. in a
5421 namestring are no longer interpreted as a version field. This is
5422 intented to be largely invisible to the user, except that the
5423 meaning of the namestring "*.*.*" has changed: it now refers to a
5424 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
5425 should usually be replaced by
5426 (make-pathname :name :wild :type :wild :version :wild)
5427 with the added benefit that this is more likely to be portable.
5428 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
5429 option to OPEN now signals an error if the file being opened
5430 exists; this may have an impact on existing code.
5431 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
5432 signals received, on the PowerPC platforms (both Linux and
5433 Darwin). (thanks to Pierre Mai for pointing out the location of
5435 * several fixes on OS X: The system now builds and runs cleanly on
5436 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
5437 (thanks to Brian Mastenbrook)
5438 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
5439 second-resolution: integer multiples of 1/3600 between -24 and 24.
5440 (thanks to Vincent Arkesteijn)
5441 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
5442 type when called with 1 argument; PEEK-CHAR checked type of
5443 PEEK-TYPE only after having read first character from a
5444 stream. (reported by Peter Graves)
5445 * bug fix: the garbage collector now has much better locality
5446 behaviour, and in particular no longer treats all memory as being
5447 exhausted when many small objects point to each other in a deeply
5449 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
5450 recognized as being TYPEP their class.
5451 * bug fix: the PUSHNEW documentation string has been corrected.
5452 (thanks to Vincent Arkesteijn)
5453 * bug fix: defaulting of the value for the last of an atypically
5454 large number of multiple values being bound was not being
5455 performed correctly on the Alpha or PPC platforms
5456 * optimization: implemented multiplication as a modular
5457 (UNSIGNED-BYTE 32) operation on the x86 backend.
5458 * optimization: SEARCH on simple-base-strings can now be open-coded.
5459 (see also contrib/compiler-extras.lisp for inspiration for
5460 teaching the compiler about the Boyer-Moore algorithm).
5461 * value, returned by MAX (and MIN) called with several EQUALP, but
5462 not EQL, arguments now does not depend on compiler settings.
5463 * fixed some bugs revealed by Paul Dietz' test suite:
5464 ** in stack analysis liveness information is propagated from
5465 non-local entry points.
5466 ** pathwise CAST removing failed when the CAST node did not start
5468 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
5469 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
5471 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
5472 host is already defined.
5473 ** RENAME-FILE works on streams instead of signalling an internal
5475 ** PEEK-CHAR uses the current readtable when determining whether
5476 or not a character is whitespace.
5477 ** MERGE-PATHNAMES handles the case when the pathname does not
5478 specify a name while the default-pathname specifies a version.
5479 ** Pathnames now stand a better chance of respecting print/read
5481 ** Attempting to use standardized file system operators with a
5482 pathname with invalid :DIRECTORY components signals a
5484 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
5486 ** DIRECTORY on logical pathnames is more correct.
5487 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
5488 signal a TYPE-ERROR if their argument is not a stream.
5489 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
5490 designator argument does not designate a stream.
5491 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
5492 examining the synonym.
5493 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
5495 ** OPEN and WITH-OPEN-STREAM allow opening streams with
5496 element-type larger than ([UN]SIGNED-BYTE 32).
5498 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
5499 * When built with the :SB-FUTEX feature, threaded builds now take
5500 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
5501 for faster/more reliable mutex and condition variable support.
5502 * Incompatible change (but one you probably shouldn't have been using
5503 anyway): the interface and code for arbitrating between multiple
5504 threads in the same user session has been redesigned.
5505 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
5506 error when called without an explicit environment argument.
5507 (thanks to Nikodemus Siivola)
5508 * bug fix: buffered :DIRECTION :IO streams are less likely to become
5509 confused about their position. (thanks to Adam Warner and Gerd
5511 * bug fix: Pretty printing backquoted forms with unquotations in the
5512 argument list position of various code constructs such as LAMBDA
5513 now works correctly. (reported by Paul Dietz)
5514 * bug fix: Pretty printing unquotations no longer loses all
5515 stream position information.
5516 * optimization: performance of string output streams is now less
5517 poor for multiple small sequence writes.
5518 * optimization: performance of CSUBTYPEP in the presence of complex
5519 expressions involving CONS and NOT many times has been improved.
5520 (reported by Paul Dietz)
5521 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
5523 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
5524 streams for the REPL, for the debugger, and so on. (thanks to
5526 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
5527 * fixed some bugs revealed by Paul Dietz' test suite:
5528 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
5529 is ignored if it is too small, rather than propagating through
5530 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
5531 ** extremely complex negations of CONS types were not being
5532 sufficiently canonicalized, leading to inconsistencies in
5534 ** VALUES tranformer lost derived type.
5536 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
5537 * fixed a bootstrapping bug: the build process no longer assumes
5538 that the various BOOLE-related constants have the same value in
5539 host and target lisps. (noted by Paul Dietz' test suite on an
5540 SBCL binary built from CLISP)
5541 * The system can now be dynamically linked on the MIPS platform,
5542 which enables dynamic loading of foreign code from Lisp. (thanks
5543 to Ralf Baechle for discussions on the MIPS ABI)
5544 * The system now records debugging information for its own source
5545 files in a filesystem-position-independent manner, relative to
5546 the "SYS" logical host.
5547 * fixed a compiler bug: MV-LET convertion did not check references
5548 to the "max args" entry point. (reported by Brian Downing)
5549 * tweaked disassembly notes to be less confident about proclaiming
5550 some instruction as an LRA. (thanks to Brian Downing)
5551 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
5552 now each have their own history, command character, and other
5553 characteristics. (thanks to David Lichteblau)
5554 * fixed some bugs revealed by Paul Dietz' test suite:
5555 ** compiler failure in compiling LOGAND expressions including a
5557 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
5558 shift greater than 32.
5559 ** FLUSH-DEST did not mark blocks for type check regeneration.
5560 ** HANDLER-CASE failed to accept declarations in handler clauses
5561 in some circumstances.
5563 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
5564 * New code in contrib/sb-introspect (still probably not entirely
5565 stable yet) provides some support for smart Lisp development
5566 environments like SLIME.
5567 * The conditions signalled for errors occurring when loading .fasl
5568 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
5569 in a way which should help ASDF recover gracefully.
5570 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
5571 stuff has been cleaned up. If you code contrib/ stuff, this might
5572 affect you, and you can look at contrib/README, contrib/STANDARDS,
5573 and/or the 0.8.4.27 diff to check.
5574 * In full calls the compiler now does not generate checks for declared
5575 argument types for all arguments.
5576 * various threading fixes
5577 ** and some experimental patches which didn't make it into
5578 the main tree for this release, but which are shipped in
5579 contrib/experimental-thread.patch as a possible fix for some
5580 failures (deadlock, spinning...) in GC-intensive multithreaded
5582 * fixed PPC build problem (source code incompatibility of different
5583 library versions): added offsetof() hackery which attempts to divine
5584 where glibc maintainers put uc_mcontext today
5585 * fixed bug 282: compiler does not trust type assertions while passing
5586 arguments to a full call.
5587 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
5588 &OPTIONAL VALUES type parameter.
5589 * fix bug 214: algorithm for noting rejected templates is now more
5590 similar to that of template seletion. (also reported by rydis on
5592 * fixed bug 141b: printing backquoted information readably and prettily
5593 inserts a space where necessary.
5594 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
5595 (CHARACTER 10) are now reported as errors, rather than propagated
5596 as unknown types. (reported by piso on #lisp)
5597 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
5598 with values NIL and :ERROR. (thanks to Milan Zamazal)
5599 * fixed bug 191c: CLOS now does proper keyword argument checking as
5600 described in CLHS 7.6.5 and 7.6.5.1.
5601 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
5602 longer raise an error; further, using a list as a for-as-arithmetic
5603 counter now raises a meaningful error.
5604 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
5605 now understood by sequence creation functions such as MAKE-SEQUENCE
5607 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
5608 a STRING-INPUT-STREAM.
5609 * compiler enhancement: SIGNUM is now better able to derive the type
5611 * type declarations inside WITH-SLOTS are checked. (reported by
5613 * fixed some bugs revealed by Paul Dietz' test suite:
5614 ** incorrect optimization of TRUNCATE for a positive first
5615 argument and negative second.
5616 ** compiler failure in let-convertion during flushing dead code.
5617 ** compiler failure while deriving type of TRUNCATE on an
5618 interval, containing 0.
5619 ** ASH of a negative bignum by a negative bignum count now returns
5621 ** intersection of CONS types now canonicalizes properly, fixing
5622 inconsistencies in SUBTYPEP.
5624 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
5625 * incompatible change: The --disable-debugger command line
5626 option now clobbers the debugger at a more fundamental
5627 level, by redefining #'INVOKE-DEBUGGER instead of by
5628 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
5629 is specified by ANSI to ignore *DEBUGGER-HOOK* and
5630 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
5631 enter the debugger REPL and then suffer recursive errors
5632 because *DEBUG-IO* is also messed up in --disable-debugger mode;
5633 while under the new system, BREAK in --disable-debugger mode
5634 terminates the system just as an unhandled error would.
5635 * fixed compiler performance when processing loops with a step >1;
5636 * bug fix: DOCUMENTATION now retrieves generic function
5637 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
5638 support has been systematized, and now supports the methods
5639 specified by ANSI, along with a default method and a method for
5640 slot documentation. (reported by Nathan Froyd)
5641 * bug fix: effective methods associated with a generic function are
5642 no longer cached over a change of that generic function's method
5643 combination. (reported by Andreas Fuchs)
5644 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
5645 names a non-existent directory. (thanks to Andreas Fuchs)
5646 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
5647 the PPC platform, lead to stack corruption; this has been fixed.
5648 (reported by Rainer Joswig)
5649 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
5650 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
5651 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
5652 arithmetic in general, is now much more reliable on the PPC
5654 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
5655 platform now returns the right answer.
5656 * optimization: restored some effective method precomputation in
5657 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
5658 precomputation is now tunable.
5659 * optimization: compiler-internal data structure use has been
5660 reviewed, and changes have been made that should improve the
5661 performance of the compiler by about 20%.
5662 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
5663 simple-base-strings and simple-bit-vectors is improved.
5664 * optimization: the optimization of 32-bit logical and arithmetic
5665 functions introduced in version 0.8.3 on the x86 has been
5666 implemented on the mips, ppc and sparc platforms; an
5667 implementation of the same facility, but for 64-bit arithmetic,
5668 has been added for the alpha.
5669 * microoptimization: the compiler is better able to make use of the
5670 x86 LEA instruction for multiplication by constants.
5671 * bug fix: in some situations compiler did not report usage of
5672 generic arithmetic in (SPEED 3) policy.
5673 * bug 145b fix: compiler used wrong type specifier while converting
5674 MEMBER-types to numeric.
5675 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
5677 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
5678 index argument now works properly on the Alpha platform.
5679 * bug fix: floating point exception treatment on the Alpha platform
5681 * bug fix: FILE-POSITION works much better on string input and
5682 output streams. (thanks to Nikodemus Siivola)
5683 * bug fix: many threading/garbage collection symptoms sorted.
5684 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
5685 might be pseudo-atomic.
5686 * internal change: Stopping for GC is now done with signals not
5687 ptrace. GC is now done in whichever thread wanted it, instead of
5689 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
5691 * bug fix: result form in DO is not contained in the implicit
5693 * incompatible change: ICR structure is changed; the value part of
5694 CONTINUATION is now called LVAR; corresponding functions are
5695 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
5696 * added type deriver for ISQRT (thanks to Robert E. Brown).
5697 * bug fix: better support for loading from the command line when an
5698 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
5700 * fixed some bugs revealed by Paul Dietz' test suite:
5701 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
5702 ** ROUND and FROUND now give the right answer when given very
5703 small float arguments.
5704 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
5706 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
5707 ** (GCD 0 <negative-integer>) returned <negative-integer>.
5708 ** LCM should return a non-negative integer.
5709 ** PARSE-INTEGER returned the index of a terminator instead of the
5710 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
5711 ** PARSE-INTEGER returned an incorrect index being applied to a
5713 ** LCM with two arguments of 0 returns 0 rather than signalling
5715 ** unsigned addition of a 32-bit constant with the high bit set no
5716 longer causes an internal compiler error on the x86.
5717 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
5718 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
5719 with negative last argument.
5720 ** byte specifiers with zero size and position no longer cause
5721 an error during type derivation.
5722 ** bignum multiplication on the Alpha platform now returns the
5724 * porting: The system now builds on SuSE AMD64, although it still
5725 generates a 32-bit binary.
5726 * .fasl file incompatibility: The fasl file version number has
5727 been incremented (because of the changes to internal compiler
5728 data structures referred to above).
5730 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
5731 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
5732 more accurately, on the Darwin kernel running on PowerPC hardware.
5733 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
5734 * Compiler code deletion notes now signal a condition of type
5735 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
5736 an associated MUFFLE-WARNING restart.
5737 * The compiler now performs limited argument count validation of
5738 constant format strings in FORMAT, and where appropriate in ERROR,
5739 CERROR and WARN. (thanks to Gerd Moellmann)
5740 * New ASDF-INSTALL contrib can be used for automatic download and
5741 installation of third-party Lisp code from CCLAN or other sites
5743 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
5744 which forces another thread to execute a function supplied by the
5746 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
5747 now accept and act upon their :ELEMENT-TYPE keyword argument.
5748 (reported by Martin Atzmueller, Edi Weitz)
5749 * bug fix: FILE-POSITION now accepts position designators up to
5750 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
5751 is the greater. (thanks to Patrik Nordebo)
5752 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
5753 Kalle Olavi Niemitalo)
5754 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
5755 printable. (reported by Eric Marsden)
5756 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
5757 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
5758 * x86 bug fix in control stack exhaustion checking: now shows backtrace
5759 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
5760 (thanks to Stig Sandoe)
5761 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
5762 UNREAD-CHAR now correctly includes the unread character in the
5763 target sequence. (thanks to Gerd Moellmann)
5764 * bug fix in threaded builds: the system can now be suspended and
5765 resumed by shell job control with minimal disruption.
5766 * bug fixes in times and timezones >2038AD
5767 * better handling of "where is GNU make?" problem in build scripts
5768 (thanks to Nikodemus Siivola)
5769 * new optimization: inside a named function any reference to a
5770 function with the same name is considered to be a self-reference;
5771 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
5772 optimization quality.
5773 * new optimization on x86: logical functions and + now have
5774 optimized (UNSIGNED-BYTE 32) versions, which are automatically
5775 used when the result is truncated to 32 bits.
5776 * VALUES declaration is partially enabled.
5777 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
5778 * fixed some bugs revealed by Paul Dietz' test suite:
5779 ** The system now obeys the constraint imposed by
5780 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
5781 types form a lattice under type intersection.
5782 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
5783 ** ASSOC now ignores NIL elements in an alist.
5784 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
5785 and (1+ MOST-POSITIVE-FIXNUM) answers.
5786 ** The addition of a method with invalid qualifiers to a generic
5787 function does not cause an error to be signalled immediately;
5788 a warning is signalled, and the error is generated only on
5789 calling the generic function.
5790 * changed .fasl file version number, in part to add type codes for
5791 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
5792 obscure ANSI requirements
5794 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
5795 * fixed bug 148: failure to inline-expand a local function left
5796 garbage, confusing the compiler.
5797 * fixed bugs 3cd: structure slot readers perform type check if the
5798 slot can have an invalid value (i.e. it is either not initialized
5799 or can be written with a less specific slot writer).
5800 * bug fix: the compiler now traps array references to elements off
5801 the end of an array; previously, the bounds checking in some
5802 circumstances could go off-by-one.
5803 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
5805 * type declarations for array element types now obey the description
5806 on the CLHS page "Declaration TYPE", as per discussions on
5807 sbcl-help around 2003-05-08. This means that a declaration
5808 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
5809 declaration, all references to BAR will be asserted or assumed
5810 (with THE, so dependent on compiler policy) to involve objects of
5811 type FOO. Note that no such declaration is implied in
5812 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
5813 * declared types of functions from the "Conditions"
5814 chapter. (reported by Paul Dietz)
5815 * bug fix: CERROR accepts a function as its first argument.
5816 * bug fix: NTH an NTHCDR accept a bignum as index
5817 arguments. (reported by Adam Warner)
5818 * optimization: character compare routines now optimize comparing
5819 against a constant character. (reported by Gilbert Baumann)
5820 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
5821 argument now works properly on the MIPS platform.
5822 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
5823 * repeated evaluation of the same DEFSTRUCT, a slot of which is
5824 declared to have a functional type, does not cause an error
5826 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
5827 many :DEFAULT-INITARGS. (reported by Istvan Marko)
5828 * fixed bug: if last continuation of a deleted block has a
5829 destination, this destination should be deleted too. (reported by
5831 * fixed a bug in the bootstrap process: the host compiler's values
5832 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
5833 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
5834 test case from Patrik Nordebo)
5835 * improved the ability of the disassembler on the PPC platform to
5836 provide helpful disassembly notes.
5837 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
5838 the class in more cases than previously.
5839 * bug fix: FILE-POSITION now understands :START and :END for
5840 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
5841 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
5842 8) data. (thanks to David Lichteblau)
5843 * bug fix: it is possible to add a method to a generic function
5844 without lambda list.
5845 * bug fix: reader failed to signal END-OF-FILE inside an
5846 object representation. (reported by Nikodemus Siivola)
5847 * fixed some bugs revealed by Paul Dietz' test suite:
5848 ** LAST and [N]BUTLAST should accept a bignum.
5849 ** condition slot accessors are methods.
5850 ** (VECTOR NIL) is a subtype of STRING.
5852 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
5853 * minor incompatible change: some nonsensical specialized lambda
5854 lists (used in DEFMETHOD) which were previously ignored now signal
5856 * minor incompatible change: the system is now aware of the types of
5857 variables in the COMMON-LISP package, and will signal errors for
5858 most violations of these type constraints (where previously they
5859 were silently accepted).
5860 * minor incompatible change: COMPILE-FILE now uses the freedom
5861 afforded (ANSI 3.2.2.3) to use derived function types for
5862 functions defined in the same file. This also permits the system
5863 to warn on static type mismatches and function
5864 redefinition. (Currently it does not work with high DEBUG level.)
5865 * minor incompatible change: VALUES declaration is disabled.
5866 * When issuing notes, the compiler now signals a condition of type
5867 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
5868 restart for use in user handlers. It is expected that the
5869 COMPILER-NOTE condition will eventually become a condition
5870 supertype to a hierarchy of note types, which will then be
5871 handleable in a similar fashion. However, at the moment, no such
5872 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
5873 but it's an implementation detail, not a classification for the
5875 * Changes in type checking closed the following bugs:
5876 ** type checking of unused values (192b, 194d, 203);
5877 ** template selection based on unsafe type assertions (192c, 236);
5878 ** type checking in branches (194bc).
5879 * A short form of VALUES type specifier has ANSI meaning (it has
5880 increased the number of situations when SBCL cannot perform type
5882 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5883 keywords or constants is permissible.
5884 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5885 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5886 classes. (thanks to Antonio Martinez)
5887 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5888 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5889 argument to a pretty-print stream. Instead, it leaves any such
5890 operations to DESCRIBE-OBJECT methods.
5891 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5893 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5894 lambda lists. (thanks to David Lichteblau)
5895 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5896 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5897 (thanks to Gerd Moellmann)
5898 * fixed bug 246: increased compilation speed of long
5899 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5901 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5903 * DEFCONSTANT now throws a condition of type
5904 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5905 constant to a non-EQL value; CONTINUE and ABORT restarts
5906 respectively change and preserve the value.
5907 * fixed bug 63: The code walker, part of the implementation of CLOS,
5908 is now better at handling symbol macros.
5909 * bug fix: There is no longer an internal implementation type named
5910 CL:LENGTH. (reported by Raymond Toy)
5911 * bug fix: In macro-like defining macros/special operators the
5912 implicit block does not enclose the lambda list.
5913 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5914 enclosed in parentheses) are not suitable as type specifiers, and
5915 their use properly signals an error now.
5916 * bug fix: An argument count mismatch for a type specifier in code
5917 being compiled no longer causes an unhandled error at compile
5918 time, but signals a compile-time warning.
5919 * fixed simple vector readable printing
5920 * bug fix: DESCRIBE takes more care over whether the class
5921 precedence list slot of a class is bound before accessing it.
5922 (reported by Markus Krummenacker)
5923 * bug fix: FORMATTER can successfully compile pretty-printer format
5924 strings which use variants of the ~* directive inside.
5925 * bug fix: SEARCH now applies its TEST predicate to the elements of
5926 the arguments in the correct order. (thanks to Wolfhard Buss)
5927 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5928 in type inference. (thanks to Robert E. Brown)
5929 * bug fix: Reading in symbols with an explicit package name of ""
5930 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5931 * fixed some bugs revealed by Paul Dietz' test suite:
5932 ** NIL is now allowed as a structure slot name.
5933 ** Arbitrary numbers, not just REALs, are allowed in certain
5934 circumstances in LOOP for-as-arithmetic clauses.
5935 ** Multiple class redefinitions before slot access no longer
5936 causes a type error.
5937 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5938 association between the name and a class.
5939 ** Generic functions with non-standard method-combination and over
5940 five methods all of which return constants no longer return NIL
5941 after the first few invocations. (thanks to Gerd Moellmann)
5942 ** CALL-NEXT-METHOD with no arguments now passes the original
5943 values of the arguments, even in the presence of assignment.
5944 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5946 ** DISASSEMBLE works with closures and funcallable instances.
5947 ** ADD-METHOD now returns the generic function, not the new method.
5948 ** FIND-METHOD signals an error if the lengths of the specializers
5949 is incompatible with the generic function, even if the ERRORP
5951 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5952 which its argument is a member.
5953 ** DEFCLASS only redefines the class named by its class-name
5954 argument if that name is the proper name of the class;
5955 otherwise, it creates a new class.
5956 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5957 of the UNBOUND-SLOT condition to the name of the slot.
5958 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5959 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5960 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5961 SLOT-MAKUNBOUND in the specified fashion.
5963 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5964 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5965 cross-compilation host. As a consequence, we can now bootstrap our
5966 way up to SBCL starting with a bare gcc toolchain and human-readable
5967 source code (first the source to CLISP, then the source to SBCL).
5968 * A contributed module containing a partial implementation of the
5969 simple-streams interface has been included. (thanks to Rudi
5971 * A contributed module implementing the RFC1321 Message Digest
5972 Algorithm, known as MD5, has been included.
5973 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5974 no longer has any effect, as the code controlled by this feature
5975 has been deleted. (As far as we know, no-one has ever built using
5976 this feature, and its semantics were confused in any case).
5977 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5978 work on conditions (as required by the ANSI specification),
5979 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5980 expected behaviour on conditions. Users should note, however,
5981 that such behaviour is not required by the ANSI specification,
5982 and so use of this behaviour may render their code unportable.
5983 * fixed some bugs revealed by Paul Dietz' test suite:
5984 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5986 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5987 ** SXHASH on condition objects no longer returns NIL.
5988 ** :ALLOCATION :CLASS slots are better treated; their values are
5989 updated on class redefinition, and initforms inherited from
5990 superclasses are applied.
5991 ** REMOVE-METHOD returns its generic function argument even when
5992 no method was removed.
5993 ** SHARED-INITIALIZE now initializes the values of the requested
5994 slots, including those with :ALLOCATION :CLASS.
5995 ** ALLOCATE-INSTANCE now works on structure classes defined via
5996 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5998 ** SLOT-EXISTS-P now works on conditions, as well as structures
6000 ** MAKE-LOAD-FORM now has the required methods on
6001 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
6002 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
6003 keyword, and now implements the SLOT-NAMES argument.
6004 ** methods with &OPTIONAL arguments no longer allow too many
6005 arguments to be passed in the call without error.
6006 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
6007 option is consistent with the required arguments of the generic
6008 function lambda list.
6009 * bug fix: REQUIRE accepts a string designator. (Thanks to
6011 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
6012 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
6013 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
6014 * bug fix: The compiler now checks for duplicated variables in macro
6016 * bug fix: SETQ on globals returns the correct value.
6017 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
6018 not a COMPILER-ERROR (followed by some other strange error on
6019 choosing the CONTINUE restart).
6020 * bug fix: make.sh and friends are now more consistent in the way that
6021 they look for GNU "make".
6023 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
6024 * experimental native threads support (on x86 Linux >=2.4 only).
6025 This is not compiled in by default: you need to add :SB-THREAD to
6026 the target features. See the "Beyond ANSI" chapter of the manual
6028 * fix for longstanding nonANSIism: The old distinction between
6029 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
6030 The return value from CL:FIND-CLASS is now a CLOS class, and
6031 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
6032 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
6033 * An interface to the MetaObject Protocol, as described in Kiczales,
6034 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
6035 MIT Press, 1991, is available from the SB-MOP package.
6036 * incompatible change: the SB-PCL package should now be considered
6037 a private implementation detail, and no longer a semi-private MOP
6039 * minor incompatible change: due to rearrangement for threads, the
6040 control stack and binding stack are now allocated at arbitrary
6041 addresses instead of being hardcoded per-port. Users affected by
6042 this probably have to be doing advanced things with shared
6043 libraries, and will know who they are.
6044 * minor incompatible change: Previously, all --eval forms used were
6045 processed with READ before any of them were processed with EVAL.
6046 Now each --eval form is processed with both READ and EVAL before
6047 the next --eval form is processed. (Thus package operations like
6048 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
6049 work as the user might reasonably expect.)
6050 * minor incompatible change: *STANDARD-INPUT* is now only an
6051 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
6053 * minor incompatible change: Y-OR-N-P is now character-oriented,
6054 not line oriented. Also, YES-OR-NO-P now works without errors.
6055 (thanks to Antonio Martinez)
6056 * sb-aclrepl module improvements: an integrated inspector, added
6057 repl features, and a bug fix to :trace command.
6058 * Known functions, which cannot be open coded by the backend, are
6059 considered to be able to check types of their arguments. (fixing
6060 a bug report by Nathan J. Froyd)
6061 * fixed a bug in computing method discriminating functions: It is
6062 now possible to define methods specialized on classes which have
6063 forward-referenced superclasses. (thanks to Gerd Moellmann)
6064 * fixed evaluation order in optional entries (reported by Gilbert
6066 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
6067 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
6068 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
6069 required-by-AMOP NAME argument, as well as CLASS and
6070 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
6071 * fixed bug 20: DEFMETHOD can define methods using names that are
6072 not the proper names of classes to designate class specializers.
6073 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
6074 Unix file descriptors, instead of blowing up. (thanks to Antonio
6076 * Garbage collection refactoring: user-visible change is that a
6077 call to the GC function during WITHOUT-GCING will not do garbage
6078 collection until the end of the WITHOUT-GCING. If you were doing
6079 this you were probably losing anyway.
6080 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
6081 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
6082 TYPEP the latter but not the former.
6083 * The compiler issues a full WARNING for calls to undefined functions
6084 with names from the CL package.
6085 * MAP-INTO for a vector destination is open coded. (reported by
6086 Brian Downing on c.l.l)
6087 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
6088 documentation string.
6089 * fixed some bugs revealed by Paul Dietz' test suite:
6090 ** COPY-ALIST now signals an error if its argument is a dotted
6092 ** Condition slots are now accessed more correctly in the presence
6093 of multiple initargs for a given slot.
6094 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
6095 exclude restarts of the same name associated with a different
6097 ** DEFCLASS of forward-referenced classes with another
6098 forward-referenced class in the superclasses list no longer
6100 ** Condition slots are now initialized once each, not multiple
6101 times. (thanks to Gerd Moellmann)
6102 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
6104 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
6105 ** NSET-EXCLUSIVE-OR does not return extra elements when its
6106 arguments contain duplicated elements.
6107 ** RESTART-CASE understands local macros.
6108 ** RESTART-CASE associates exactly its own restarts with a condition.
6109 ** ENDP in safe mode checks its argument to be of type LIST.
6110 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
6111 in question is unbound.
6112 ** Optimized MAKE-INSTANCE functions no longer cause internal
6113 assertion failures in the presence of duplicate initargs.
6114 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
6115 ** Side-effectful :DEFAULT-INITARGS have their side-effects
6116 propagated even in the ctor optimized implementation of
6118 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
6120 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
6121 * a better implementation of SXHASH on (simple) bit vectors,
6122 measured both in execution speed and in distribution of results
6123 over the positive fixnums, has been installed. Likewise, a better
6124 implementation of EQUAL for simple bit vectors is now available.
6125 * fixed CEILING optimization for a divisor of form 2^k.
6126 * fixed bug 240 (emitting extra style warnings "using the lexical
6127 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
6128 by Antonio Martinez)
6129 * fixed SXHASH, giving different results for NIL depending on type
6130 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
6131 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
6132 variable. (found by Rolf Wester)
6133 * SBCL does not ignore type declarations for special
6134 variables. (reported by rif on c.l.l 2003-03-05)
6135 * some bug fixes in contrib/sb-aclrepl/
6136 * fixed some bugs revealed by Paul Dietz' test suite:
6137 ** a bug in the CONS type specifier, whereby the CAR and CDR
6138 types got intertwined, has been fixed;
6139 ** the type system is now able to reason about the interaction
6140 between INTEGER and RATIO types more completely;
6141 ** APPEND, [N]REVERSE and NRECONC check that those their
6142 arguments, which must be proper lists, are really so;
6143 ** An array specialized to be unable to hold elements has been
6144 implemented, as required -- yes, really -- by ANSI;
6145 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
6146 on malformed property lists;
6148 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
6149 * incompatible packaging change: in line with Unix convention,
6150 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
6151 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
6152 * REQUIRE and PROVIDE are now optionally capable of doing something
6153 useful. See the documentation string for REQUIRE.
6154 * infrastructure for a managed SBCL contrib system: contributed
6155 modules in this release include:
6156 ** the ASDF system definition facility;
6157 ** an interface to the BSD Sockets API;
6158 ** an ACL-like convenience interface to the repl;
6159 (thanks to Kevin Rosenberg)
6160 ** an implementation of ROTATE-BYTE, with efficient implementation
6162 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
6163 gives a closer approximation to the right answer than previously.
6164 (thanks to Raymond Toy)
6165 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
6166 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
6167 optional environment arguments, as required by ANSI.
6168 * fixed bugs in other functions taking environment objects, allowing
6169 calls with an explicit NIL environment argument to be compiled
6171 * fixed bug 228: primary return values from
6172 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
6173 COMPILE or FUNCTION.
6174 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
6175 :TYPE will no longer signal errors on innocuous objects.
6176 * fixed bug 231b: SETQ is better at respecting type declarations in
6177 the lexical environment.
6178 * fixed a bug in DEFCLASS: classes named by symbols with no or
6179 unprintable packages can now be defined.
6180 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
6181 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
6182 * fixed compiler failure related to checking types of functions.
6183 (reported by Robert E. Brown)
6184 * the compiler is now much more consistent in its error-checking
6185 treatment of bounding index arguments to sequence functions: in
6186 (SAFETY 3) code, errors will be signalled in almost all cases if
6187 invalid sequence bounding indices are passed to functions defined
6188 by ANSI to operate on sequences.
6189 * fixed a bug in the build procedure: documentation of SBCL-specific
6190 packages is now preserved and available in the final Lisp image.
6191 * lifted FDEFINITION lookup out of loops in the implementation of
6192 many list operations. (thanks to Robert E. Brown)
6193 * fixed a bug in the reader: the #n# reader macro now works for
6194 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
6195 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
6196 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
6197 E. Brown and Tony Martinez respectively)
6198 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
6199 SLOT-BOUNDP: in particular, it is now able to optimize them much
6200 better, and is now not vulnerable to having packages renamed.
6201 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
6202 always called when a slot is not present in an instance. (thanks
6204 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
6205 longer signal an error on unreading a character following EOF on
6206 the previous constituent stream. (thanks to Tony Martinez)
6207 * fixed some bugs revealed by Paul Dietz' test suite:
6208 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
6209 not just nonnegative fixnums;
6210 ** the logical bit-array operators such as BIT-AND now accept an
6211 explicit NIL for their "opt-arg" argument (to indicate a
6212 freshly-consed result bit-array);
6213 ** ELT now signals an error on an invalid sequence index in safe
6215 ** the type system is now cleverer about negations of numeric
6216 types, and consequently understands the BIGNUM and RATIO types
6218 ** the type system is now cleverer about the interaction between
6219 INTEGER and RATIO types: while bugs still remain, many more
6220 cases are accurately computed;
6221 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
6222 if it is in the last clause;
6223 ** CONSTANTLY now correctly returns a side-effect-free function in
6225 ** DECLARE is no longer treated as a special-operator; in
6226 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
6227 * incremented fasl file version number due to the change in the
6228 DEFSTRUCT-SLOT-DESCRIPTION structure.
6230 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
6231 * minor incompatible change: code processed by the "interpreter" or
6232 EVAL now has a compilation optimization policy of (DEBUG 2)
6233 (changed from (DEBUG 1)) to improve debuggability of interactive
6234 development, and to allow the use of the debug RETURN command in
6236 * an experimental implementation of the RETURN command for the
6237 debugger has been included. (thanks to Frederik Kuivinen)
6238 * fixed bug 62: constraints were not propagated into a loop.
6239 * fixed bug in embedded calls of SORT (reported and investigated by
6241 * fixed some bugs revealed by Paul Dietz' test suite:
6242 ** printing and reading of arrays with some dimensions having
6243 length 0 (thanks to Gerd Moellmann);
6244 ** BOA constructor with &AUX argument without a default value does
6245 not cause a type error;
6246 ** CONSTANTP now returns true for all self-evaluating objects.
6248 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
6249 * fixed bug 127: DEFSTRUCT now does not clobber old structure
6250 accessors that are related by inheritance, as specified in the
6251 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
6252 Valtteri Vuorikoski)
6253 * The compiler is now able to inline functions that were defined in
6254 a complex lexical environment (e.g. inside a MACROLET).
6255 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
6257 * Support for the upcoming FreeBSD-5.0 release has been included.
6258 (thanks to Dag-Erling Smorgrav)
6259 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
6260 effect when it is not in a toplevel context.
6261 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
6262 stand a better chance of being correct. (thanks to Gerd
6264 * fixed bug in COERCE, which now signals an error on coercing a
6265 rational to a bounded real type which excludes the expected
6267 * The compiler is now able to derive types more accurately from the
6268 COERCE and COMPILE functions.
6269 * fixed bug 223: functional binding is considered to be constant
6270 only for symbols in the CL package.
6271 * fixed bug 231: SETQ did not check the type of a variable being set
6272 (reported by Robert E. Brown)
6273 * A new optimization for MAKE-INSTANCE has been included, fixing
6274 various bugs (including relating to :ALLOCATION :CLASS slots and
6275 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
6277 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
6278 ** As required by ANSI, LOOP now disallows anonymous collection
6279 clauses such as COLLECT I in conjunction with aggregate boolean
6280 clauses such as THEREIS (= I 1);
6281 ** LOOP now signals an error when any variable is reused in the
6282 same loop (including the potentially useful construct analogous
6283 to WITH A = 1 WITH A = (1+ A);
6284 ** IT is only a special loop symbol within the first clause of a
6285 conditional loop clause;
6286 ** LOOP with a typed iteration variable over a hashtable now
6287 signals a type error iff it should.
6288 * fixed some other bugs revealed by Paul Dietz' test suite:
6289 ** FILE-STREAM now names the class previously known as FD-STREAM;
6290 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
6291 argument) no longer signals an error;
6292 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
6293 of the slot symbol, rather than using the current package
6294 ((:CONC-NAME "") continues to intern the slot's name in the
6296 * incremented fasl file version number, because of the incompatible
6297 change to the DEFSTRUCT-DESCRIPTION structure, and again because
6298 of the new implementation of DEFINE-COMPILER-MACRO.
6300 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
6301 * Support for building SBCL for MIPS platforms running in
6302 little-endian mode has now been checked in, and basic
6303 functionality on said platforms verified.
6304 * minor incompatible change: PCL now records the pathname of a file
6305 in which methods and the like are defined, rather than its
6307 * minor incompatible change: TRUENAME now considers the truename of
6308 a file naming a directory to be the pathname with :DIRECTORY
6309 component indicating that directory.
6310 * minor incompatible change: a NAMED clause in the extended form of
6311 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
6312 reason for the previous behaviour is unclear.
6313 * more systematization and improvement of CLOS and MOP conformance
6314 in PCL (thanks to Gerd Moellman and Pierre Mai):
6315 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
6317 ** DEFINE-METHOD-COMBINATION no longer signals an error for
6318 primary methods with no specializers;
6319 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
6321 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
6322 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
6323 FORWARD-REFERENCED-CLASSes; error reporting on
6324 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
6326 ** SXHASH on CLOS instances now uses a slot internal to the
6327 instance to return different numbers on distinct instances,
6328 while preserving the same return value through invocations of
6330 ** DEFMETHOD signals errors when methods with longer incongruent
6331 lambda lists are added to generic functions;
6332 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
6333 CLASS, as specified in AMOP;
6334 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
6335 on the order returned by the primary method for classes of
6336 class STANDARD-CLASS;
6337 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
6338 * fixed some bugs shown by Paul Dietz' test suite:
6339 ** DOLIST puts its body in TAGBODY;
6340 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
6342 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
6343 value producing form;
6344 ** if more variables are given to PROGV than values, extra
6345 variables are bound and made to have no value;
6346 ** NSUBSTITUTE on list arguments gets the right answer with
6348 ** ELT signals an error of type TYPE-ERROR when the index argument
6349 is not a valid sequence index;
6350 ** LOOP signals (at macroexpansion time) an error of type
6351 PROGRAM-ERROR when duplicate variable names are found;
6352 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
6353 ** FUNCALL of special-operators now cause an error of type
6355 ** PSETQ now works as required in the presence of side-effecting
6356 symbol-macro places;
6357 ** NCONC accepts any object as its last argument;
6358 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
6360 ** loop-for-as-package does not require a package to be explicitely
6362 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
6364 * fixed bug 166: compiler preserves "there is a way to go"
6365 invariant when deleting code.
6366 * fixed bug 172: macro lambda lists with required arguments after
6367 &REST arguments now cause an error to be signalled. (thanks to
6369 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
6370 bug. (thanks to Matthew Danish)
6371 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
6373 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
6374 arguments are lexically rebound. (thanks to Gerd Moellmann and
6376 * fixed bug 194: error messages are now more informative when there
6377 is no primary method applicable in a call to a generic
6378 function. (thanks to Gerd Moellmann)
6379 * fixed bug in command line argument checking (thanks to Julian
6381 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
6382 (thanks to Matthew Danish)
6383 * incremented fasl file version number, because of the
6384 SXHASH-related changes in the layout of CLOS data structures
6386 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
6387 * minor incompatible change: The runtime (the Unix executable named
6388 "sbcl") is now much pickier about the .core files it will load.
6389 Essentially it now requires .core files to descend from the same
6390 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
6391 as the runtime does. (The intent is to prevent the crashes which
6392 can occur, and which can even be reported as mysterious failures,
6393 when people patch the sources or change the build parameters
6394 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
6395 sbcl and .core files.)
6396 * fixed bug: VALUES-LIST is no longer optimized away.
6397 * fixed bug 142: The FFI conversion of C string values to Lisp
6398 string values no longer conses excessively. (thanks to Nathan
6399 Froyd porting Raymond Toy's fix to CMU CL)
6400 * began to systematize and improve MOP conformance in PCL (thanks to
6401 Nathan Froyd, Gerd Moellman and Pierre Mai):
6402 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
6404 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
6405 ** FINALIZE-INHERITANCE is now called on class finalization;
6406 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
6407 argument precedence order.
6408 * fixed bug 202: The compiler no longer fails on functions whose
6409 derived types contradict their declared type.
6410 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
6411 so it can be non-toplevel.
6412 * The fasl file version number has changed (because of the new
6413 implementation of DEFMACRO).
6414 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
6415 safe code, that any length requirement by their type-specifier
6416 argument is valid. The exceptions to this are described in bug
6418 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
6419 functions now check the types of their inputs as required by ANSI.
6420 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
6421 introduced symbol is DECLAREd to be SPECIAL.
6422 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
6423 * fixed bug: :COUNT argument to sequence functions may be negative
6424 * fixed bug: body of DO-SYMBOLS may contain declarations
6425 * fixed bug: PUSHNEW now evaluates its arguments from left to right
6426 (reported by Paul F. Dietz, fixed by Gerd Moellman)
6427 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
6428 symbol macro only once
6429 * fixed printing of call frame when argument list is unavailable
6430 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
6431 * compiler no longer signals WARNING on unknown keyword
6434 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
6435 * A beta-quality port to the mips architecture running Linux,
6436 based on the old CMUCL backend, has been made. It has been tested
6437 on a big-endian kernel, and works sufficiently well to be able to
6438 rebuild itself; it has not been tested in little-endian mode.
6439 * fixed an inconsistency between gencgc.c and purify.c which made
6440 dumping/loading .core files unreliable
6441 * fixed bug 120a: The compiler now deals correctly with IFs where
6442 the consequent is the same as the alternative, instead of
6443 misderiving the return type. (thanks to Alexey Dejneka)
6444 * fixed bug 113: Logical pathnames are now dumpable (the logical
6445 host is resolved at load-time, throwing an error if it is not
6447 * fixed bug 174: FORMAT's error message is slightly clearer when a
6448 non-printing character is used in a format directive.
6449 * fixed several bugs in compiler checking of type declarations, i.e.
6450 violations of the Python "declarations are assertions" principle
6451 (thanks to Alexey Dejneka)
6452 * fixed several bugs in PCL's error checking (thanks to Gerd
6454 * fixed bug: printing of FILE-ERROR (thanks to Antonio
6456 * fixed bug in compilation of functions as first class values
6457 (thanks to Antonio Martinez-Shotton)
6458 * The compiler's handling TYPE-ERRORs which it can prove will
6459 inevitably happen at runtime has been cleaned up and corrected
6460 in several ways. (thanks to Alexey Dejneka)
6461 * improved argument type checking for various basic arithmetic
6462 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
6463 lavished on them in the past that they can be compiled in many
6464 ways in different special cases
6465 * fixed bug 181: compiler checks validity of user supplied type
6467 * cleaned up code flushing in optimization: Function calls which
6468 should signal errors for safety purposes (e.g. which ANSI says
6469 should signal errors when their arguments are of incorrect type)
6470 are no longer optimized away.
6471 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
6472 * incremented fasl file version number, because changes in the
6473 implementation of sequence functions like COERCE caused
6474 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
6475 in old inline expansions) to become undefined. (Actually these
6476 changes were later undone, so we might very well be binary
6477 compatible with 0.7.7 after all, but leaving the version number
6478 incremented seemed like the simplest and most conservative
6481 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
6482 * An alpha-quality port to the parisc architecture running Linux,
6483 based on the old CMUCL backend, has been made. This, even more so
6484 than the other backends, should be considered still a work in
6485 progress; known problems include that the Linux kernel in 64-bit
6486 mode does not propagate the correct sigcontext structure to
6487 userspace, and consequently SBCL on a parisc64 kernel will not
6489 * fixed bug 189: The compiler now respects NOTINLINE declarations for
6490 functions declared in FLET and LABELS. (I.e. "LET conversion" is
6491 suppressed.) Also now that the compiler is looking at declarations
6492 in the environment, it checks optimization declarations as well,
6493 and suppresses inlining when (> DEBUG SPEED).
6494 * More fixes have been made to treatment of floating point exception
6495 treatment and other Unix signals. In particular, floating point
6496 exceptions no longer cause Bus errors on the SPARC/Linux platform.
6497 * The detection and handling of control stack exhaustion (infinite
6498 or very deeply nested recursion) has changed. Stack exhaustion
6499 detection is now done by write-protecting pages at the OS level
6500 and applies at all optimization settings; when found, a
6501 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
6502 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
6503 be caught using IGNORE-ERRORS.
6504 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
6505 correctly when transforming recursive LABELS functions to LETs.
6506 (thanks to Alexey Dejneka)
6507 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
6508 that are names of constants or global variables.
6509 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
6510 alien routines with docstrings.
6511 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
6512 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
6514 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
6515 (thanks to Eric Marsden)
6516 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
6517 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
6518 * Bug fix: The SPARC backend can now compile functions involving
6519 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
6520 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
6521 to a functions expecting a PATHNAME-DESIGNATOR.
6522 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
6523 lambda lists. (thanks to Alexey Dejneka)
6524 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
6525 functions so that EXPORTing the name of the class doesn't cause
6526 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
6527 to Antonio Martinez for reporting this)
6528 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
6529 constant-folded without failing an assertion. (thanks to Einar
6530 Floystad Dorum for reporting this)
6531 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
6532 types are now dealt with more correctly by the compiler.
6533 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
6534 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
6535 behaviour analogous to RENAME-FILE. This puts its behaviour more
6536 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
6538 * The fasl file version number has changed again. (because of the
6539 bug fix involving the names of PCL MAKE-INSTANCE functions)
6541 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
6542 * bug fix: Floating point exceptions are treated much more
6543 consistently on the x86/Linux and PPC/Linux platforms.
6544 * Array initialization with :INITIAL-ELEMENT is now much faster for
6545 cases when the compiler cannot open code the array creation, but
6546 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
6547 array accesses have also seen a speed increase.
6548 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
6549 specified. (This was at the root of some bad interactions between
6550 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
6552 * bug fix: Internal error arguments for undefined functions are now
6553 computed correctly on the PPC/Linux platform.
6554 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
6555 Raymond Toy's patch for CMU CL)
6556 * Support for the Solaris 9 operating environment has been included
6557 (thanks to Daniel Merritt)
6558 * A very ugly but hopefully complete draft of the missing FFI chapter
6559 of the manual has been created by reformatting the corresponding
6560 CMU CL manual chapter into (currently very ugly and incoherent)
6561 DocBook and bringing it up to date for SBCL behavior. Thus, the
6562 manual is now essentially complete, at least by my extreme
6563 once-and-only-once standards, whereby it's acceptable to refer to
6564 the doc strings of SB-EXT functions as the primary documentation.
6565 * The fasl file version number has changed again, due to cleanup of
6566 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
6567 is no longer a static symbol.)
6569 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
6570 * SBCL now builds with OpenMCL (version 0.12) as the
6571 cross-compilation host; also, more progress has been made toward
6572 bootstrapping under CLISP.
6573 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
6575 * bug 158 fixed: The compiler can now deal with integer loop
6576 increments different from 1; fixing this turned out also to fix
6578 * bug 169 fixed: no more bogus warnings about using lexical bindings
6579 despite the presence of perfectly good SPECIAL declarations (thanks
6580 to David Lichteblau)
6581 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
6582 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
6583 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
6585 * bug 180 fixed: Method combination specifications no longer ignore
6586 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
6587 * bug fix: Structure type predicate functions now check their argument
6588 count as they should.
6589 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
6590 correctly. (thanks to Pierre Mai)
6591 * minor incompatible change: The --noprogrammer option is deprecated
6592 in favor of the new --disable-debugger option, which is very similar.
6593 (The major difference is that it takes effect at a slightly different
6594 time at startup, causing handling of errors in --sysinit and
6595 --userinit files will be affected differently.) The
6596 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
6597 been added to allow this functionality to be controlled from ordinary
6598 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
6599 maintainers, who might want to run non-interactive scripts to
6600 build SBCL cores which will later be used interactively.)
6601 * minor incompatible change: The LOAD function no longer, when given
6602 a wild pathname to load, loads all files matching that pathname.
6603 Instead, an error of type FILE-ERROR is signalled.
6605 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
6606 * bug 147 fixed: The compiler preserves its block link/count
6607 invariants more correctly now so that it doesn't crash. (thanks
6609 * Dynamic loading of object files in OpenBSD is now supported. (thanks
6611 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
6612 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
6613 no-value-for-this-character as NIL (as specified by ANSI).
6614 * HOST-NAMESTRING on physical pathnames now returns a string that is
6615 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
6616 (thanks to Christophe Rhodes)
6617 * The Alpha port handles icache flushing more correctly. (thanks to
6619 * More progress has been made toward bootstrapping under CLISP. (thanks
6620 to Christophe Rhodes)
6621 * The fasl file format has changed again, because dynamic loading
6622 on OpenBSD (which has non-ELF object files) motivated some cleanups
6623 in the way that foreign symbols are transformed and passed around.
6624 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
6625 is no longer treated as whitespace by the reader, but instead as
6626 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
6627 |A
\x7fB|, instead of A as it used to.
6629 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
6630 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
6631 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
6632 * SBCL now runs on the PPC archtiecture under Linux. It actually did
6633 this as of 0.7.1.45, but was left out of the previous news section
6634 (thanks to Dan Barlow)
6635 * SBCL now runs on the Solaris operating system on SPARC architectures
6636 (thanks to Christophe Rhodes's port of the CMUCL runtime)
6637 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
6638 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
6639 * SPARC backend cleanups, allowing builds of cores optimized for V8
6640 and V9 SPARCS, and also emission of code targeted to a particular
6641 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
6643 * SBCL is closer to bootstrapping under CLISP, thanks to various
6644 fixes by Christophe Rhodes.
6645 * The fasl file format has changed again, to allow the compiler's
6646 INFO database to support symbol macros.
6647 * The user manual (in doc/) is formatted into HTML more nicely.
6648 (thanks to coreythomas)
6649 * The system is smarter about SUBTYPEP relationships, especially
6650 those involving NOT types (including types such as ATOM which are
6651 represented internally using NOT types). Thus SUBTYPEP is less
6652 likely to return (VALUES NIL NIL) in general, and in particular
6653 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
6655 * The fasl file format has changed again, because the internal
6656 representation of types now includes a new slot to support the new
6657 SUBTYPEP-of-NOT-types logic.
6658 * (not a change in the main branch of SBCL, but a related prototype
6659 which can hopefully be merged into the main branch of SBCL in the
6660 future:) Brian Spilsbury has produced a Unicode-enabled variant of
6661 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
6662 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
6663 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
6664 dispatch macro character combinations. (thanks to Alexey Dejneka)
6665 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
6666 that superficially look like logical namestrings correctly.
6667 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
6669 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
6670 default supplied-p) for &optional and &key arguments. (thanks to
6673 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
6674 * incompatible change: The compiler is now less aggressive about
6675 tail call optimization, doing it only when (> SPACE DEBUG) or
6676 (> SPEED DEBUG). (This is an incompatible change because there are
6677 programs which relied on the old CMU-CL-style behavior to optimize
6678 away their unbounded recursion which will now die of stack overflow.)
6679 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
6680 for non-GENCGC systems has been increased to 20M (since that
6681 seems much closer to the likely performance optimum for modern
6682 systems than the old 4M value was)
6683 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
6684 and *DEBUG-PRINT-LEVEL*
6685 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
6686 of CMU CL's support for SPARC, and various endianness and other
6687 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
6688 * new syntactic sugar for the Unix command line: --load foo.bar is now
6689 an alternate notation for --eval '(load "foo.bar")'.
6691 ** The system now detects stack overflow and handles it gracefully,
6692 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
6693 optimization settings. (This is a good thing in general, and
6694 its introduction in this version should be particularly timely
6695 for anyone whose code fails because of suppression of tail
6697 ** The system now hunts for the C variable "environ" in a more
6698 devious way, to avoid segfaults when the C library version differs
6699 between compile time and run time. (thanks to Christophe Rhodes)
6700 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
6701 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
6702 ** The compiler no longer issues bogus style warnings for undefined
6703 classes in the same source file as the DEFCLASSes which defined
6704 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
6706 ** fixes in CONDITION class precedence list for undefined function
6707 errors (thanks to Alexei Dejneka)
6708 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
6709 correctly. (thanks to Dan Barlow)
6710 ** portability fixes aiming at bootstrapping under CLISP (thanks
6711 to Dave McDonald and Christophe Rhodes)
6712 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
6713 ** fixes in type translation and and type inference (thanks to
6715 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
6716 ** various fixes in the new ports (thanks to Dan Barlow)
6717 * several changes related to debugging:
6718 ** suppression of tail recursion, as noted above
6719 ** stack overflow detection, as noted above
6720 ** The default implementation of TRACE has changed. :ENCAPSULATE T
6721 is now the default. (For some time encapsulation has been more
6722 reliable than the breakpoint-based :ENCAPSULATE NIL
6723 implementation, at least on X86 systems; and I just noticed that
6724 encapsulation also seems closer to the spirit of the ANSI
6727 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
6729 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
6730 up properly again. (There was a packaging bug in 0.7.0 which
6731 left their definitions in SB-SYS::LOAD-FOREIGN and
6732 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
6733 vital for most things which interface to C-level interfaces,
6734 like extensions working with sockets or databases or
6735 Perl-compatible regexes or whatever, and the need to fix
6736 this bug is the main reason that 0.7.1 was released so
6738 ** DEFGENERIC is now choosier about the methods it redefines, so that
6739 reLOADing a previously-LOADed file containing DEFGENERICs does
6740 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
6741 cycle now works as it should. (thanks to Alexey Dejneka)
6742 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
6743 fixed by Christophe Rhodes. (He actually submitted this patch
6744 months ago, and I delayed until after 0.7.0.)
6745 ** Bug 111 (internal compiler confusion about runtime checks on
6746 FUNCTION types) was fixed by Alexey Dejneka.
6747 * Some internal cleanups (getting rid of variables which aren't
6748 needed now that the byte interpreter is gone) caused the fasl
6749 file format number to change again.
6751 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
6752 * major incompatible change: The default fasl file extension, i.e. the
6753 default extension for files produced by COMPILE-FILE, has changed
6754 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
6756 ** There are many changes in the implementation of the compiler.
6757 SBCL is now essentially a compiler-only implementation of ANSI
6758 Common Lisp. EVAL still "interprets" a few special cases, but
6759 almost all the interesting cases are handled by creating
6760 a LAMBDA expression, calling COMPILE on it, then calling
6761 FUNCALL on the result.
6762 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
6763 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
6764 Since the code is newer, there might still be some new bugs
6765 (though not as many as before Martin Atzmueller's fixes:-). But
6766 the new code is substantially simpler and clearer, and hopefully
6767 any remaining bugs will be simpler, less fundamental, and more
6768 fixable then the bugs in the old code.
6769 ** The revised compiler is still a little unsteady on its feet.
6771 *** The debugging information it produces (particularly the names
6772 of FUNCTION objects) is sometimes much less useful than what
6773 the old compiler produced.
6774 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
6775 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
6776 within a MACROLET) has been temporarily weakened.
6777 ** There are new compiler optimizations for various functions:
6778 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
6779 FIND-IF-NOT, POSITION-IF-NOT, and FILL
6780 *** the math functions TRUNCATE, FLOOR, and CEILING
6781 *** the function-of-all-trades COERCE
6782 Mostly these should be transparent, but there's one
6783 potentially-annoying problem (bug 117): when the compiler
6784 inline-expands a function and does type analysis on the result,
6785 it can create control paths which have type mismatches, and
6786 when it can't prove that those control paths aren't taken,
6787 it will issue WARNINGs about the type mismatches. This is
6788 a particular problem in practice for the new sequence functions.
6789 It's not clear how this should be fixed, and for now, a
6790 workaround is given in the entry for 117 in the BUGS file.
6791 ** (Because of the interaction between the two previous items --
6792 occasional inlining problems and new inline expansions -- some
6793 of the new sequence function optimizations won't really kick in
6794 completely until debugging information, and then inlining, are
6795 straightened out in some future version.)
6796 * minor incompatible changes:
6797 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
6798 DIRECTORY no longer implicitly promotes NIL slots of its
6799 pathname argument to :WILD. In particular, when you ask for the
6800 contents of a directory (which you used to be able to do without
6801 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
6802 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
6803 ** changes in behavior that ANSI explicitly defines to be
6804 implementation dependent:
6805 *** The new compiler-only implementation still conforms with ANSI,
6806 but acts a little different than before. Besides the obvious
6807 changes in performance tradeoffs (that the cost per form passed
6808 to EVAL has gone up, and the cost per form executed by EVAL
6809 has gone down), the behavior of the system changes a little
6810 because there are no longer any interpreted function objects.
6811 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
6812 e.g. doing COMPILE on the output of interactive DEFUN is
6814 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
6816 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
6817 has changed from (:CL) to NIL.
6818 *** The CHAR-NAME of unprintable ASCII characters which, unlike
6819 e.g. #\Newline and #\Tab, don't have names specified in the
6820 ANSI Common Lisp standard, is now based on their ASCII symbolic
6821 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
6822 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
6823 are no longer used for output.
6824 ** changes in internal implementation constants:
6825 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
6826 4 million. (If your application spends a lot of time GCing and
6827 you have a lot of RAM, you might want to experiment with
6828 increasing it even more.)
6829 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
6830 However, almost all old code should still continue to work without
6831 immediate update, as SB-C-CALL is now a (deprecated) nickname
6833 ** Old operator names in the style DEF-FOO are now deprecated in
6834 favor of new corresponding names DEFINE-FOO, for consistency with
6835 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
6836 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
6837 internal symbols, but a few supported extensions like
6838 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
6839 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
6840 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
6841 etc. as you get deeper into recursive calls to the debugger
6842 command loop, instead of the old "5]", "5]]", "5]]]"
6843 sequence. (I was motivated to do this when squabbles between
6844 ILISP and SBCL left me very deeply nested in the debugger. In the
6845 short term, this change will probably provoke more ILISP/SBCL
6846 squabbles, but hopefully it will be an improvement in the long run.)
6847 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
6848 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
6849 function, since declaiming return types involving aliens is
6850 (1) annoyingly messy to do by hand and (2) vital to efficient
6851 compilation of code which calls such functions.
6852 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
6853 longer reexported by the SB-EXT package. They're solely useful
6854 for alien code, so it seems more logical that you should get
6855 them from the SB-ALIEN package, not in SB-EXT.
6856 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
6857 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
6858 features. Instead, the code that they used to control is always
6859 built into the system.
6860 * many other bug fixes
6861 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
6862 advantage of the new EVAL-WHEN stuff and to clean them up in
6863 general, and they are now more ANSI-compliant in a number of
6864 ways. Martin Atzmueller is responsible for a lot of this.
6865 ** Besides the cleanups discussed above, Martin Atzmueller fixed
6867 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
6868 *** correct ERROR type for various file operations
6869 *** some fixes for Lisp streams
6870 *** DEFMETHOD syntax checking
6871 *** changing old weird representation of debug information as
6872 strings (which, among their other deficiencies, don't transform
6873 correctly when you rename packages, and don't change their
6874 print representation when you change things like *PACKAGE*
6875 and *PRINT-LENGTH*) to symbols and lists of symbols
6876 He also made several improvements and fixed several bugs in DESCRIBE.
6877 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6879 *** misbehavior of WRITE-STRING/WRITE-LINE
6880 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6881 and several other LOOP problems as well
6882 *** DIRECTORY when similar filenames are present
6883 *** DEFGENERIC with :METHOD options
6884 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6885 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6886 *** argument ordering in FIND with :TEST option
6887 *** mishandled package designator argument in APROPOS-LIST
6888 *** various problems in the backquote readmacro
6889 *** a bug in APROPOS
6890 *** probably some others that I'm not describing very well here,
6891 since the CVS log documents them by reference to sbcl-devel
6892 messages, and the SourceForge archives aren't working well.:-(
6893 ** Dan Barlow improved the Alpha port (and is making progress on the
6894 PPC port, for those of you who think different).
6895 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6896 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6897 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6898 continues to work on the SPARC port (for those of you in a position
6899 to look down upon our little PC-compatible boxes from a great height).
6900 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6901 and uses that copy, rather than the current dynamic value, when
6902 it's trying to decide whether to truncate output. Thus e.g.
6903 (let ((*print-lines* 50))
6904 (pprint-logical-block (stream nil)
6906 (let ((*print-lines* 8))
6907 (print (aref possiblybigthings i) stream)))))
6908 should now truncate the logical block only at 50 lines, instead of
6909 often truncating it at 8 lines, as it did before.
6910 * The doc/cmucl/ directory, containing old CMU CL documentation
6911 from the time of the fork, is no longer part of the base system.
6912 SourceForge has shut down its anonymous FTP service, and with it
6913 my original plan for distributing the old CMU CL documentation
6914 there. For now, if you need these files you can download an old
6915 SBCL source release and extract them from it.
6916 * The fasl file version number changed again, for dozens of reasons,
6917 some of which are apparent above.
6919 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6920 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6921 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6922 patch, so that DISASSEMBLE output is much nicer.
6923 * The code in the SB-PROFILE package now seems reasonably stable.
6924 I still haven't decided what the final interface should look like
6925 (I'd like PROFILE to interact cleanly with TRACE, since both
6926 facilities use function encapsulation) but if you have a need
6927 for profiling now, you can probably use it successfully with
6928 the current CMU-CL-style interface.
6929 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6930 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6931 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6932 link now returns the dangling link itself, and for similar
6933 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6934 link itself. (In these cases the old code signalled an error and
6935 looped endlessly, respectively.) Thus, DIRECTORY now works even
6936 in the presence of dangling and cyclic symbolic links.
6937 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6938 is now a supported extension again, since the consensus on
6939 sbcl-devel was that it can be useful for ordinary development
6940 work, not just for debugging SBCL itself.
6941 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6942 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6943 that currently-defined functions might be redefined later with
6944 different return types.
6945 * Hash tables can be printed readably, as inspired by CMU CL code
6946 of Eric Marsden and SBCL code of Martin Atzmueller.
6947 * better error handling in CLOS method combination, thanks to
6948 Martin Atzmueller porting Pierre Mai's CMU CL patches
6949 * more overflow fixes for >16Mbyte I/O buffers
6950 * A bug in READ has been fixed, so that now a single Ctrl-D
6951 character suffices to cause end-of-file on character streams.
6952 In particular, now you only need one Ctrl-D at the command
6953 line (not two) to exit SBCL.
6954 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6956 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6957 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6958 does the right thing.
6959 * The implementation of some type tests, especially for CONDITION
6960 types, is now tidier and maybe faster, due to CMU CL code
6961 originally by Douglas Crosher, ported by Martin Atzmueller.
6962 * Some math functions have been fixed, and there are new
6963 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6964 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6965 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6966 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6967 likely to be built into sbcl-0.7.0.)
6968 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6969 CL, ported to SBCL by Martin Atzmueller)
6970 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6971 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6972 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6973 * There's a new slam.sh hack to shorten the edit/compile/debug
6974 cycle for low-level changes to SBCL itself, and a new
6975 :SB-AFTER-XC-CORE target feature to control the generation of
6976 the after-xc.core file needed by slam.sh.
6977 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6978 COMPILE-FILE is no longer supported, so that now every function
6979 gets an entry point, so that block compilation looks a little
6980 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6981 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6982 returns the number of bytes consed since the system started,
6983 rather than the number consed since the first time the function
6984 was called. (The new definition parallels ANSI functions like
6985 CL:GET-INTERNAL-RUN-TIME.)
6986 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6987 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6988 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6989 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6990 * Fasl file version numbers are now independent of the target CPU,
6991 since historically most system changes which required version
6992 number changes have affected all CPUs equally. Similarly,
6993 the byte fasl file version is now equal to the ordinary
6996 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6997 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6998 is no longer recognized. I apologize for this, because it was
6999 listed in SB-EXT as a supported extension, but I found that
7000 its existing behavior was poorly specified, as well as incorrectly
7001 specified, and it looked like too much of a mess to straighten it
7002 out. I have enough on my hands trying to get ANSI stuff to work..
7003 * many patches ported from CMU CL by Martin Atzmueller, with
7004 half a dozen bug fixes in pretty-printing and the debugger, and
7005 half a dozen others elsewhere
7006 * fixed bug 13: Floating point infinities are now supported again.
7007 They might still be a little bit flaky, but thanks to bug reports
7008 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
7009 as flaky as they were.
7010 * The --noprogrammer command line option is now supported. (Its
7011 behavior is slightly different in detail from what the old man
7012 page claimed it would do, but it's still appropriate under the
7013 same circumstances that the man page talks about.)
7014 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
7015 are now supported, and enabled by default. Thus, the compiler can
7016 handle many floating point and complex operations much less
7017 inefficiently. (Thus e.g. you can implement a complex FFT
7019 * The compiler now detects type mismatches between DECLAIM FTYPE
7020 and DEFUN better, and implements CHECK-TYPE more correctly, and
7021 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
7022 thanks to patches from Martin Atzmueller.
7023 * various fixes to make the cross-compiler more portable to
7024 ANSI-conforming-but-different cross-compilation hosts (notably
7025 Lispworks for Windows, following bug reports from Arthur Lemmens)
7026 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
7027 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
7028 fixed thanks to Pierre Mai's CMU CL patches.
7029 * fixes to keep the system from overflowing internal counters when
7030 it tries to use i/o buffers larger than 16M bytes
7031 * fixed bug 45a: Various internal functions required to support
7032 complex special functions have been merged from CMU CL sources.
7033 (When I was first setting up SBCL, I misunderstood a compile-time
7034 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
7035 * improved support for type intersection and union, fixing bug 12
7036 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
7037 more obscure bugs as well
7038 * some steps toward byte-compiling non-performance-critical
7039 parts of the system, courtesy of patches from Martin Atzmueller
7040 * Christophe Rhodes has made some debian packages of sbcl at
7041 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
7042 From his sbcl-devel e-mail of 2001-04-08 they're not completely
7043 stable, but are nonetheless usable. When he's ready, I'd be happy
7044 to add them to the SourceForge "File Releases" section. (And if
7045 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
7046 * new fasl file format version number (because of changes in
7047 internal representation of (OR ..) types to accommodate the new
7048 support for (AND ..) types, among other things)
7050 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
7051 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
7053 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
7055 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
7056 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
7057 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
7058 * DESCRIBE now works on structure objects again.
7059 * Most function call argument type mismatches are now handled as
7060 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
7061 know whether the function will be redefined before the call is
7062 executed. (The compiler could flag local calls with full WARNINGs,
7063 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
7064 it doesn't keep track of enough information to know whether calls
7065 are local in this sense.)
7066 * Compiler output is now more verbose, with messages truncated
7067 later than before. (There should be some supported way for users
7068 to override the default verbosity, but I haven't decided how to
7069 provide it yet, so this behavior is still controlled by the internal
7070 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
7071 src/compiler/ir1util.lisp.)
7072 * Fasl file format version numbers have increased again, because
7073 support for the Gray streams extension changes the layout of the
7074 system's STREAM objects.
7075 * The Gray subclassable streams extension now works, thanks to a
7076 patch from Martin Atzmueller.
7077 * The full LOAD-FOREIGN extension (not just the primitive
7078 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
7079 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
7080 but like most other programs, it defaults to copying the Unix
7081 environment from the original process instead of starting the
7082 new process in an empty environment.
7083 * Extensions which manipulate the Unix environment now support
7084 an :ENVIRONMENT keyword option which doesn't smash case or
7085 do other bad things. The CMU-CL-style :ENV option is retained
7086 for porting convenience.
7087 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
7088 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
7090 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
7092 * A patch from Martin Atzmueller seems to have solved the SIGINT
7093 problem, and as far as we know, signal-handling now works cleanly.
7094 (If you find any new bugs, please report them!)
7095 * The system no longer defaults Lisp source file names to types
7096 ".l", ".cl", or ".lsp", but only to ".lisp".
7097 * The compiler no longer uses special default file extensions for
7098 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
7099 seems to expect a single default extension for all compiled code,
7100 and there's no compelling reason to try to stretch the standard
7101 to allow two different extensions.) Instead, byte-compiled files
7102 default to the same extension as native-compiled files.
7103 * Fasl file format version numbers have increased again, because
7104 a rearrangement of internal implementation packages made some
7105 dumped symbols in old fasl files unreadable in new cores.
7106 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
7107 many fewer weird special cases.
7108 * Bug #17 (differing COMPILE-FILE behavior between logical and
7109 physical pathnames) has been fixed, and some related misbehavior too,
7110 thanks to a patch from Martin Atzmueller.
7111 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
7112 by Tim Moore, ported to SBCL by Martin Atzmueller.
7113 * Martin Atzmueller fixed several filesystem-related problems,
7114 including bug #36, in part by porting CMU CL patches, which were
7115 written in part by Paul Werkowski.
7116 * More compiler warnings in src/runtime/ are gone, thanks to
7117 more patches from Martin Atzmueller.
7118 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
7121 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
7123 * DESCRIBE now works on CONDITION objects.
7124 * The debugger now handles errors which arise when trying to print
7125 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
7127 * The build system now uses an additional file, customize-target-features.lisp,
7128 to allow local modifications to the target *FEATURES* list. (The point of
7129 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
7130 debugging features enabled, without having to worry about propagating it
7131 into everyone's system when I do a "cvs update".) When no
7132 customize-target-features.lisp file exists, the target *FEATURES* list
7133 should be constructed the same way as before.
7134 * fixed bugs in DEFCONSTANT ANSI-compatibility:
7135 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
7136 warn about behavior which is undefined under the ANSI spec. Note: This
7137 is specified by ANSI, but it's not very popular with programmers.
7138 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
7139 macro in the SBCL sources for an example of a workaround which you
7140 might use to make portable ANSI-standard code which does what you want.
7141 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
7142 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
7143 when it's used as a non-toplevel form. (This is required in order
7144 to implement the DEFCONSTANT-EQX macro.)
7145 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
7146 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
7147 funny things, due to bugs in the implementation of EVAL-WHEN
7148 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
7149 non-toplevel DEFCONSTANTs are uncommon.)
7150 * The core file version number and fasl file version number have been
7151 incremented, because the old noncompliant DEFCONSTANT behavior involved
7152 calling functions which no longer exist, and because I also took the
7153 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
7154 * fixed bug 1 (error handling before read-eval-print loop starts), and
7155 redid debugger restarts and related debugger commands somewhat while
7157 ** The QUIT debugger command is gone, since it did something
7158 rather different than the SB-EXT:QUIT command, and since it never
7159 worked properly outside the main toplevel read/eval/print loop.
7160 Invoking the new TOPLEVEL restart provides the same functionality.
7161 ** The GO debugger command is also gone, since you can just invoke
7162 the CONTINUE restart directly instead.
7163 ** The TOP debugger command is also gone, since it's redundant with the
7164 FRAME 0 command, and since it interfered with abbreviations for the
7166 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
7168 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
7169 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
7170 some porting work by Martin Atzmueller)
7171 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
7172 with a boatload of patches which he ported to SBCL. Now that those
7174 ** The system tries to make sure that its low-priority messages
7175 are prefixed by semicolons, to help people who like to use
7176 syntax highlighting in their ILISP buffer. (This patch
7177 was originally due to Raymond Toy.)
7178 ** The system now optimizes INTEGER-LENGTH better, thanks to more
7179 patches originally written by Raymond Toy.
7180 ** The compiler understands coercion between single-value and
7181 multiple-VALUES type expressions better, getting rid of some very
7182 weird behavior, thanks to patches originally by Robert MacLachlan
7183 and Douglas Crosher.
7184 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
7185 lambda lists, thanks to a patch originally by Pierre Mai.
7186 ** The system no longer bogusly warns about "abbreviated type
7188 ** The compiler gets less confused by inlining and RETURN-FROM,
7189 thanks to some patches originally by Tim Moore.
7190 ** The system no longer hangs when dumping circular lists to fasl
7191 files, thanks to a patch originally from Douglas Crosher.
7192 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
7193 undefined function error.
7194 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
7195 in structure slot initforms) for now, documented workaround instead:-|
7196 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
7197 * fixed bug 5: added stubs for various Gray stream functions called
7198 in the not-a-CL:STREAM case, so that even when Gray streams aren't
7199 installed, at least appropriate type errors are generated
7200 * fixed bug 8: better reporting of various PROGRAM-ERRORs
7201 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
7202 consistently in DEFMETHOD forms.
7203 * removed bug 21 from BUGS, since Martin Atzmueller points out that
7204 it doesn't seem to affect SBCL after all
7205 * The C runtime system now builds with better optimization and many
7206 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
7208 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
7210 * The system is now under CVS at SourceForge (instead of the
7211 CVS repository on my home machine).
7212 * The new signal handling code has been tweaked to treat register
7213 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
7214 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
7215 downstream, e.g. in debug-int.lisp, has implicit dependencies
7216 on the unsignedness of integer representation of machine words,
7217 and that caused the system to bomb out with infinite regress
7218 when trying to recover from type errors involving signed values,
7219 e.g. (BUTLAST '(1 2 3) -1).)
7220 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
7221 (This was one of the bugs Peter Van Eynde reported back in July.)
7222 * The system now uses code inspired by Colin Walters' O(N)
7223 implementation of MAP (from the cmucl-imp@cons.org mailing
7224 list, 2 September 2000) when it can't use a DEFTRANSFORM to
7225 inline the MAP operation, and there is more than one
7226 sequence argument to the MAP call (so that it can't just
7227 do ETYPECASE once and for all based on the type of the
7228 single sequence argument). (The old non-inline implementation
7229 of the general M-argument sequence-of-length-N case required
7230 O(M*N*N) time when any of the sequence arguments were LISTs.)
7231 * The QUIT :UNIX-CODE keyword argument has been renamed to
7232 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
7233 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
7235 * Raymond Wiker's patches to port dynamic loading from Linux to
7236 FreeBSD have been added.
7237 * The BUGS file is now more nearly up to date, thanks in large part
7238 to Martin Atzmueller's review of it.
7239 * The debugger now flushes standard output streams before it begins
7240 its output ("debugger invoked" and so forth).
7241 * The core version number and fasl file version number have both
7242 been incremented, because of incompatible changes in the layout
7244 * FINISH-OUTPUT is now called more consistently on QUIT. (It
7245 used to not be called for a saved Lisp image.)
7246 * Martin Atzmueller's version of a patch to fix a compiler crash,
7247 as posted on sbcl-devel 13 September 2000, has been installed.
7248 * Instead of installing Martin Atzmueller's patch for the
7249 compiler transform for SUBSEQ, I deleted the compiler transform,
7250 and transforms for some similar consing operations.
7251 * A bug in signal handling which kept TRACE from working on OpenBSD
7253 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
7254 away by constant folding
7255 * The system now defines its address space constants in one place
7256 (in the Lisp sources), and propagates them automatically elsewhere
7257 (through GENESIS and the sbcl.h file). Therefore, patching the
7258 address map is less unnecessarily tedious and error-prone. The
7259 Lisp names of address space constants have also been systematized.
7260 * CVS tags like dollar-Header-dollar have been removed from
7261 the sources, because they have never saved me trouble and
7262 they've been source of trouble working with patches and other
7263 diff-related operations.
7264 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
7265 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
7267 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
7269 * The system has been ported to OpenBSD.
7270 * The system now compiles with a simple "sh make.sh" on the systems
7271 that it's supported on. I.e., now you no longer need to tweak
7272 text in the target-features.lisp-expr and symlinks in src/runtime/
7273 by hand, the make.sh takes care of it for you.
7274 * The system is no longer so grossly inefficient when compiling code
7275 involving vectors implemented as general (not simple) vectors (VECTOR T),
7276 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
7277 which dares to use the various sequence functions on non-simple
7278 vectors, takes less of a performance hit.
7279 * There is now a primitive type predicate VECTOR-T-P
7280 to test for the (VECTOR T) type, so that e.g.
7281 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
7282 can now be compiled with some semblance of efficiency. (The old code
7283 turned the type declaration into a full call to %TYPEP at runtime!)
7284 * AREF on (VECTOR T) is still not fast, since it's still compiled
7285 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
7286 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
7287 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
7288 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
7289 without making full calls to SUBTYPEP at runtime.
7290 (Some analogous efficiency issues for non-simple vectors specialized to
7291 element types other than T, or for non-simple multidimensional arrays,
7292 have not been addressed. They could almost certainly be handled the
7293 same way if anyone is motivated to do so.)
7294 * The changes in array handling break binary compatibility, so
7295 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
7296 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
7297 instead of (VALUES T T).
7298 * By following the instructions that Dan Barlow posted to sbcl-devel
7299 on 2 July 2000, I was able to enable primitive dynamic object
7300 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
7301 functionality is not implemented (since it calls ld to resolve
7302 library references automatically, requiring RUN-PROGRAM for its
7303 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
7304 try to resolve library references) is now supported.
7305 * The system now flushes the standard output streams when it terminates,
7306 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
7307 them at several other probably-convenient times, e.g. in each pass of
7308 the toplevel read-eval-print loop, and after evaluating a form given
7309 as an "--eval" command-line option. (These changes were motivated by a
7310 discussion of stream flushing issues on cmucl-imp in August 2000.)
7311 * The source transform for TYPEP of array types no longer assumes
7312 that an array whose element type is a not-yet-defined type
7313 is implemented as an array of T, but instead punts, so that the
7314 type will be interpreted at runtime.
7315 * There is now some support for cross-compiling in make.sh: each of
7316 the phases of make.sh has its own script. (This should be transparent
7317 to people doing ordinary, non-cross-compile builds.)
7318 * Since my laptop doesn't have hundreds of megabytes of memory like
7319 my desktop machine, I became more motivated to do some items on
7320 my to-do list in order to reduce the size of the system a little:
7321 ** Arrange for various needed-only-at-cold-init things to be
7322 uninterned after cold init. To support this, those things have
7323 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
7324 symbols with such names are now uninterned after cold init).
7325 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
7326 fasl files for cold load.
7327 ** Remove the old compiler structure pooling code (which used to
7328 be conditional on the target feature :SB-ALLOC) completely.
7329 ** Redo the representation of some data in cold init to be more compact.
7330 (I also looked into supporting byte compiled code at bootstrap time,
7331 which would probably reduce the size of the system a lot, but that
7332 looked too complicated, so I punted for now.)
7333 * The maximum signal nesting depth in the src/runtime/ support code has
7334 been reduced from 4096 to 256. (I don't know any reason for the very
7335 large old value. If the new smaller value turns out to break something,
7336 I'll probably just bump it back up.)
7337 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
7339 * Many, many bugs reported by Peter Van Eynde have been added to
7340 the BUGS list; some have even been fixed.
7341 * While enabling dynamic object file loading, I tried to make the
7342 code easier to understand, renaming various functions and variables
7343 with less ambiguous names, and changing some function calling
7344 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
7345 * While trying to figure out how to do the OpenBSD port, I tried to
7346 clean up some of the code in src/runtime/. In particular, I dropped
7347 support for non-POSIX signal handling, added various comments,
7348 tweaked the code to reduce the number of compilation warnings, and
7349 renamed some files to increase consistency.
7350 * To support the new automatic configuration functionality in make.sh,
7351 the source file target-features.lisp-expr has been replaced with the
7352 source file base-target-features.lisp-expr and the machine-generated
7353 file local-target-features.lisp-expr.
7354 * fixed a stupid quoting error in make.sh so that using CMU CL
7355 "lisp -batch" as cross-compilation host works again
7357 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
7359 * DESCRIBE no longer tries to call itself recursively to describe
7360 bound/fbound values, so that it no longer fails on symbols which are
7361 bound to themselves (like keywords, T, and NIL).
7362 * DESCRIBE now works on generic functions.
7363 * The printer now prints less-screwed-up representations of closures
7364 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
7365 * A private symbol is used instead of the :EMPTY keyword previously
7366 used to mark empty slots in hash tables. Thus
7367 (DEFVAR *HT* (MAKE-HASH-TABLE))
7368 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
7369 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
7370 now does what ANSI says that it should. (You can still get
7371 similar noncompliant behavior if bang on the hash table
7372 implementation with all the symbols you get back from
7373 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
7374 This breaks binary compatibility, since tests for equality to
7375 :EMPTY are wired into things like the macroexpansion of
7376 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
7378 * There's now a minimal placeholder implementation for CL:STEP,
7379 as required by ANSI.
7380 * An obscure bug in the interaction of the normal compiler, the byte
7381 compiler, inlining, and structure predicates has been patched
7382 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
7383 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
7385 * Missing ordinary arguments in a macro call are now detected even
7386 when the macro lambda list contains &KEY or &REST.
7387 * The debugger no longer complains about encountering the top of the
7388 stack when you type "FRAME 0" to explicitly instruct it to go to
7389 the top of the stack. And it now prints the frame you request even
7390 if it's the current frame (instead of saying "You are here.").
7391 * As specified by ANSI, the system now always prints keywords
7392 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
7394 * The default initial SIZE of HASH-TABLEs is now smaller.
7395 * Type information from CLOS class dispatch is now propagated
7396 into DEFMETHOD bodies, so that e.g.
7397 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7399 is now basically equivalent to
7400 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7401 (DECLARE (TYPE SINGLE-FLOAT X))
7403 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
7404 operation, without having to do run-time type dispatch.
7405 * The macroexpansion of DEFMETHOD has been tweaked so that it has
7406 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
7407 * Since I don't seem to be making big file reorganizations very often
7408 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
7409 is overflowing my ability to conveniently back them up), I've finally
7410 checked the system into CVS. (The CVS repository is on my home system,
7411 not at SourceForge -- putting it on SourceForge might come later.)
7412 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
7413 high-level GC-NOTIFY-FOO functions send their output. (There's
7414 still very little control of where low-level verbose GC functions
7415 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
7416 less than it used to -- the GC-NOTIFY-FOO functions are now under
7417 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
7418 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
7419 in only one place in the source code, and propagates it automatically
7420 everywhere that it's needed. Thus e.g. when I bump the version from
7421 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
7422 * The C source files now include boilerplate legalese and documentation
7423 at the head of each file (just as the Lisp source files already did).
7424 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
7425 to his page will be replaced with a link to his new CLiki service.
7427 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
7429 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
7430 * The build process now looks for GNU make under the default name "gmake",
7431 instead of "make" as it used to. If GNU make is not available as "gmake"
7432 on your system, you can change this default behavior by setting the
7433 GNUMAKE environment variable.
7434 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
7435 can build without error under CMU CL.
7437 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
7439 * There is now a partial SBCL user manual (with some new text and some
7440 text cribbed from the CMU CL manual).
7441 * The beginnings of a profiler have been added (starting with the
7442 CMU CL profiler and simplifying and cleaning up). Eventually the
7443 main interface should be through the TRACE macro, but for now,
7444 it's still accessed through vaguely CMU-CL-style functions and macros
7445 exported from the package SB-PROFILE.
7446 * Some problems left over from porting CMU CL to the new
7447 cross-compilation bootstrap process have been cleaned up:
7448 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
7449 instead of SB!XC:DEFMACRO, compounded by an oversight on my
7450 part when getting rid of the compiler *BACKEND* stuff.)
7451 ** The value of *NULL-TYPE* was screwed up, because it was
7452 being initialized before the type system knew the final
7453 definition of the 'NULL type. This screwed up several key
7454 optimizations in the compiler, causing inefficiency in all sorts
7455 of places. (I found it because I wanted to understand why
7456 GET-INTERNAL-RUN-TIME was consing.)
7457 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
7458 PROCLAIM FTYPE information. Unfortunately this broke binary
7459 compatibility again, since now the forms output by DEFGENERIC
7460 to refer to functions which didn't exist in 0.6.3.
7461 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
7462 can use the new (as of 0.6.3) transform for SOME into MAP into
7464 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
7465 values to (INTEGER 0 1000000), so that the time code will no longer
7466 occasionally get blown up by Linux returning 1000000 microseconds
7467 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
7468 its output conform to the ANSI spec. (Alas, this makes its output
7469 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
7470 * A full call to MAP NIL with a single sequence argument no longer conses.
7471 * fixes to problems pointed out by Martin Atzmueller:
7472 * The manual page no longer talks about multiprocessing as though
7473 it were currently supported.
7474 * The ILISP support patches have been removed from the distribution,
7475 because as of version 5.10.1, ILISP now supports SBCL without us
7476 having to maintain patches.
7477 * added a modified version of Raymond Toy's recent CMU CL patch for
7478 EQUALP comparison of HASH-TABLE
7480 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
7482 * The system still can't cross-compile itself with
7483 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
7484 entails), but at least it can compile more of itself that way
7485 than it used to be able to, and various buglets which were uncovered
7486 by trying to cross-compile itself that way have now been fixed.
7487 * This release breaks binary compatibility again. This time
7488 at least I've incremented the FASL file format version to 2, so that the
7489 problem can be detected reliably instead of just causing weird errors.
7490 * various new style warnings:
7491 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
7492 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
7493 ** using the lexical binding of a variable named in the *FOO* style
7494 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
7495 as specified by ANSI.
7496 * *RANDOM-STATE* is no longer automatically initialized from
7497 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
7498 default behavior of the system is to repeat its behavior every time
7499 it's run. If you'd like to change this behavior, you can always
7500 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
7501 old convention there was no comparably easy way to get the system to
7502 repeat its behavior every time it was run.
7503 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
7504 FTYPE declarations has been removed, in favor of their ANSI
7505 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
7506 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
7507 the types of their sequence arguments can be determined at compile time.
7508 This is done through a new open code expansion for MAP which eliminates
7509 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
7510 argument types can be determined at compile time.
7511 * The optimizer now transforms COERCE into an identity operation when it
7512 can prove that the coerced object is already of the correct type. (This
7513 can be a win for machine generated code, including the output of other
7514 optimization transforms, such as the MAP transform above.)
7515 * Credit information has been moved from source file headers into CREDITS.
7516 * Source file headers have been made more standard.
7517 * The CASE macro now compiles without complaining even when it has
7520 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
7522 * (Note that the way that the PCL macroexpansions were rewritten
7523 to accommodate the change in DEFGENERIC below breaks binary
7524 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
7525 not run under sbcl-0.6.2. Once we get out of alpha releases,
7526 i.e. hit release 1.0.0, we'll probably try to maintain binary
7527 compatibility between maintenance releases, e.g. between sbcl-1.4.3
7528 and sbcl-1.4.4. Until then, however, it might be fairly common
7529 for maintenance releases to break binary compatibility.)
7530 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
7532 * The reporting of unhandled signals has been changed to print some
7533 explanatory text as well as the report form. (Previously only
7534 the report form was printed.)
7535 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
7536 it defines, so that the compiler no longer issues undefined function
7537 warnings for compiled-but-not-yet-loaded generic functions.
7538 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
7539 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
7540 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
7541 section of the ANSI spec are supported.
7542 * The "" nickname for the "KEYWORD" package has been removed.
7543 The reader still handles symbol tokens which begin with a package marker
7544 as keywords, but it doesn't expose its mechanism for doing so in the
7545 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
7546 * The system now issues STYLE-WARNINGs for contradictory TYPE
7547 proclamations. (Warnings for contradictory FTYPE proclamations would
7548 be nice too, but those can't be done usefully unless the type system
7549 is made smarter about FUNCTION types.)
7550 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
7551 systematized, so that "*target-*.lisp is supposed to exist only on the
7552 target and imply that there's a related file which exists on the
7553 host, and *host-*.lisp is supposed to exist only on the host and imply
7554 that there's a related file which exists on the target. This involves a
7555 lot of renaming. Hopefully the acute confusion caused by the renaming
7556 will be justified by the reduction in chronic confusion..
7557 ** runtime-type.lisp -> early-target-type.lisp
7558 ** target-type.lisp -> late-target-type.lisp
7559 ** early-host-format.lisp -> early-format.lisp
7560 ** late-host-format.lisp -> late-format.lisp
7561 ** host-error.lisp -> misc-error.lisp
7562 ** early-error.lisp -> early-target-error.lisp
7563 ** late-error.lisp -> late-target-error.lisp
7564 ** host-defboot.lisp -> early-defboot.lisp
7565 ** code/misc.lisp -> code/target-misc.lisp
7566 ** code/host-misc.lisp -> code/misc.lisp
7567 ** code/numbers.lisp -> code/target-numbers.lisp
7568 ** code/early-numbers.lisp -> numbers.lisp
7569 ** early-host-type.lisp -> early-type.lisp
7570 ** late-host-type.lisp -> late-type.lisp
7571 ** host-typep.lisp -> typep.lisp
7572 ** load.lisp -> target-load.lisp
7573 ** host-load.lisp -> load.lisp
7574 ** host-disassem.lisp -> disassem.lisp
7575 ** host-insts.lisp -> insts.lisp
7576 ** byte-comp.lisp -> target-byte-comp.lisp
7577 ** host-byte-comp.lisp -> byte-comp.lisp
7578 ** host-signal.lisp -> signal.lisp
7579 ** host-defstruct.lisp -> defstruct.lisp
7580 ** late-target-type.lisp -> deftypes-for-target.lisp
7581 Furthermore, several other previously target-only files foo.lisp (e.g.
7582 hash-table.lisp and random.lisp) have been split into a target-and-host
7583 foo.lisp file and a target-only target-foo.lisp file, with their key type
7584 definitions in the target-and-host part, so that the cross-compiler will
7585 know more about target types.
7586 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
7587 gone away. In their place are various *BACKEND-FOO* variables
7588 corresponding to the slots of the old structure.
7589 * A bug which caused the SB-COLD bootstrap-time package to be propagated
7590 into the target SBCL has been fixed.
7591 * The chill.lisp system for loading cold code into a running SBCL
7593 * Support for the CMU CL "scavenger hook" extension has been removed.
7594 (It was undocumented and unused in the CMU CL sources that SBCL was
7595 derived from, and stale in sbcl-0.6.1.)
7596 * Various errors in the cross-compiler type system were detected
7597 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
7598 (enabling various consistency checks). Many of them were fixed,
7599 but some hard problems remain, so the compiler is back to
7600 running without *TYPE-SYSTEM-INITIALIZED* for now.
7601 * As part of the cross-compiler type system cleanup, I implemented
7602 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
7603 * I have started adding UNCROSS calls throughout the type system
7604 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
7605 on cross-compiler input files will be able to go away, and various
7607 * CONSTANTP now returns true for quoted forms (as explicitly required
7610 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
7612 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
7613 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
7614 (MAKE-LIST -1). In the longer term, it ought to become true
7615 that declarations are assertions even at SAFETY 1. For now, it's not
7616 quite true even at SAFETY 3, but it's at least more nearly true..
7617 (Note that this change seems to increases the size of the system by
7618 O(5%) and to decrease the speed of the compiler by 20% or more.)
7619 * changed ALIEN printing to be much more abbreviated, as a short-term fix
7620 for the problem of printing dozens of lines of distracting information
7621 about low-level system machinery as part of the top stack frame
7622 on entry to the debugger when an undefined function was called.
7623 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
7624 is not reset to COMMON-LISP-USER.
7625 * Compilation of stuff related to dyncount.lisp has been made conditional
7626 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
7627 smaller. The various dyncount-related symbols have been moved into
7628 a new "SB-DYNCOUNT" package.
7629 * tty-inspect.lisp has been renamed to inspect.lisp.
7630 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
7631 feature has gone away. (When we eventually port to other flavors of
7632 libc and/or Unix, we'll try to make the differences between flavors
7633 invisible at the user level.)
7634 * Various other *FEATURES* tags, and/or their associated conditionals,
7635 have been removed if obsolescent, or given better documentation, or
7636 sometimes given more-mnemonic names.
7638 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
7640 * tidied up "make.sh" script
7641 * tidied up system directory structure
7642 * better "clean.sh" behavior
7643 * added doc/FOR-CMUCL-DEVELOPERS
7644 * many many small tweaks to output format, e.g. removing possibly-confusing
7645 trailing #\. character in DESCRIBE-INSTANCE
7646 * (EQUALP #\A 'A) no longer signals an error.
7647 * new hashing code, including EQUALP hashing
7648 * tidied up Lisp initialization and toplevel
7649 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
7650 * command line argument processing
7651 * added POSIX-GETENV function to deal with Unix-ish environment variables
7652 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
7653 terminating SBCL on EOF
7654 * non-verbose GC by default
7655 * There is no more "sbcl" shell script; the sbcl file is now the C
7656 runtime executable (just like CMU CL).
7657 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
7659 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
7660 symbol and package information as Lisp native symbol and package objects
7661 instead of strings naming symbols and strings naming packages. This way,
7662 whenever packages are renamed (as in warm init), debug information is
7663 transformed along with everything else.
7664 * tweaked the optimization policy declarations which control the building
7665 of SBCL itself. Now, among other things, the system no longer saves
7666 source location debugging information. (This helps two problems at once
7667 by reducing SBCL size and by keeping SBCL from trying to look for its
7668 sources -- which may not exist -- when reporting errors.)
7669 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
7670 debugging and testing purposes
7671 * cleaned up printing, making the printer call PRINT-OBJECT for
7672 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
7673 methods, giving nearly-ANSI behavior
7674 * converted almost all special variables to use *FOO* naming convention
7675 * deleted PARSE-TIME functionality, since it can be done portably
7676 * moved some files out of cold init into warm init
7677 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
7679 * regularized formatting of source files
7680 * added an install.sh script
7681 * fixed ridiculous memory usage of cross-compiler by making
7682 compiler/alloc.lisp not try to do pooling unless it can hook
7683 itself into the GC of the cross-compilation host. Now the system
7684 builds nicely on my old laptop.
7685 * added :SB-ALLOC in target-features.lisp-expr
7686 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
7687 was not implemented)
7688 * re-did condition handling and note reporting in the compiler. Notes
7689 are no longer handled by signalling conditions. Style warnings
7690 and warnings are handled more correctly and reported in such a way
7691 that it's easy to find one or the other in your output (so that you
7692 can e.g. figure out which of many problems caused COMPILE-FILE to
7694 * changed the severity of several compiler warnings from full WARNING
7695 to STYLE-WARNING in order to conform with the ANSI spec; also changed
7696 compiler note reporting so that it doesn't use the condition system
7697 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
7698 COMPILE-FILE command)
7699 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
7700 function. As a consequence, START-BLOCK and END-BLOCK declarations are
7701 no longer supported, since their implementation was deeply intertwingled
7702 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
7703 * removed bogus "support" for compiler macros named (SETF FOO), and
7704 removed the compiler macro for SETF INFO (but only after making a fool
7705 of myself on the cmucl-imp mailing list by posting a bogus patch for
7706 DEFINE-COMPILER-MACRO..)
7707 * Compiled files containing forms which have side effects on the Lisp
7708 reader (such as DEFPACKAGE forms) are now handled more correctly.
7709 (Compiler queuing of top level lambdas has been suppressed by setting
7710 *TOP-LEVEL-LAMBDA-MAX* to 0. )
7711 * deleted various currently-unused source files, e.g. gengc.lisp. They
7712 may be added back at some point e.g. when porting to other architectures,
7713 but until they are it's distracting to distribute them and to try to
7715 * deleted "UNCROSS couldn't recurse through.." style warnings, since
7716 there were so many of them they're just distractions, and UNCROSS is
7717 known to be able to handle the current sources
7718 * moved PROFILE functionality into TRACE, so that it will be clear
7719 how the wrapping and unwrapping of functions when you profile them
7720 interacts with the wrapping and unwrapping of functions when you
7721 trace them. (Actually, the functionality isn't there yet, but at least
7722 the interface specification is there. Hopefully, the functionality will
7723 arrive with some future maintenance release.)
7724 * removed host-oops.lisp
7725 * changed signature of QUIT function to allow UNIX-CODE argument
7726 * fixed READ-SEQUENCE bug
7727 * tweaked verbose GC output so that it looks more like the progress
7728 output that ANSI specifies for functions like LOAD
7729 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
7730 * added <http://sbcl.sourceforge.com> to the banner information printed by