1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
3 changes relative to sbcl-1.3.17:
4 * minor incompatible change: existing values of CFLAGS, ASFLAGS,
5 CPPFLAGS, and LINKFLAGS will be incorporated into C compiler
6 invocations when building from source.
7 * minor incompatible change: the result of WRITE-TO-STRING may be
8 a BASE-STRING if all characters written are of type BASE-CHAR.
9 * minor incompatible change: the broadcast stream with no output
10 streams is a singleton object. That object satisfies OPEN-STREAM-P
11 regardless of how many times CLOSE is invoked on it.
12 * enhancement: x86[-64] backends contain an experimental feature
13 which aids in demonstrating reachability of any object starting
14 from a tenured object or a thread stack by producing a proof
15 as a sequence of pointers to follow.
16 The file "tests/traceroot.test.sh" contains an example usage.
17 * enhancement: if the alien symbol "gc_coalesce_string_literals" is
18 set to 1 prior to SAVE-LISP-AND-DIE, then similar string constants
19 loaded from different fasl files may be collapsed to one object.
20 If the variable is set to 2, then additionally strings which are
21 STRING= in code resulting from COMPILE can be coalesced.
22 For instance, two functions returning the literal string "HI"
23 might return EQ strings after collapsing, which may be undesired
24 in a particular use. The flag pertains to gencgc only.
25 * enhancement: SXHASH values on pathnames are better distributed
26 * bug fix: MAKE-PATHNAME removes empty strings as components of a
27 directory, as is permitted: "Whenever a pathname is constructed
28 the components may be canonicalized if appropriate."
29 * optimization: various printer and FORMAT performance enhancements.
30 * bug fix: GET-FOREGROUND no longer fails in case all other interactive
31 threads exit (lp#1682671, reported by Syll)
32 * bug fix: RELEASE-FOREGROUND always removes the current thread from the
33 list of interactive threads. (lp#1682867, reported by Syll)
35 changes in sbcl-1.3.17 relative to sbcl-1.3.16:
36 * enhancement: memory overhead from the garbage collector's metadata
37 is reduced on 64-bit architectures; no change for 32-bit.
38 * enhancement: further garbage collector speedups affecting
39 pinned objects on conservative backends, and simple-vectors.
40 * enhancement: on Linux a custom handler for SIGSEGV can be called
41 for page faults outside of dynamic space by changing the C symbol
42 "sbcl_fallback_sigsegv_handler".
43 * bug fix: sb-cover does not lose source positions for AND/OR/COND.
44 * bug fix: random disassembler failures. (lp#1527931)
45 * The bundled sb-md5 contrib has been updated to release 2.0.4
46 which is licensed under Creative Commons CC0 per author's statement
47 https://github.com/pmai/md5/commit/fd134e71b71a10ab78905833a7cb9d4d6817c589
48 (Refer to NEWS and COPYING in the contrib/sb-md5 subdirectory)
50 changes in sbcl-1.3.16 relative to sbcl-1.3.15:
51 * optimization: various small tweaks give around 5% faster garbage
53 * bug fix: better detection of when an impossible code path does
54 not need a warning. (lp#1668619)
55 * bug fix: stronger attempts to disable position-independent
56 executable building. (lp#1668986, patch from Mark Wright)
57 * bug fix: OPEN :IF-EXISTS NIL signalled a condition on Windows.
58 (lp#1674437, reported by Jan Idzikowski)
60 changes in sbcl-1.3.15 relative to sbcl-1.3.14:
61 * minor incompatible change: the reader will when feasible create
62 new symbols using a BASE-STRING for the print name. Additionally,
63 string literals can favor the base-string type if desired, though
64 the default is to always return UTF-32 strings for compatibility.
65 A preference for base-string does not disable reading Unicode.
66 The choice is controlled via (SETF READTABLE-BASE-CHAR-PREFERENCE).
67 If Unicode was disabled at build time, this setting does nothing.
68 * enhancement: SBCL generates more debug information by default.
69 * enhancement: type errors provide context information, such as which
70 variable is being bound, which slot of which structure is being set.
71 * enhancement: if #+immobile-symbols is in build-time *FEATURES* (not
72 enabled by default), then symbols will never be moved in memory
73 except by SAVE-LISP-AND-DIE. Immobility has helpful implications for
74 code generation as well as interaction with foreign routines.
75 This feature can only be enabled if #+immobile-space is enabled.
76 * enhancement: undefined function errors can be restarted on x86-64, to
77 either retry calling the function again or call a user supplied function.
78 * enhancement: sb-ext:restrict-compiler-policy accepts an upper bound in
79 addition to a lower bound.
80 * enhancement: #+immobile-code improves the speed of function calling.
81 Some delay may be noticed when redefining an existing function
82 from a saved core file however.
83 * defaults change: sb-ext:*disassemble-annotate* default to NIL, due to its
85 * new feature: SB-LINKABLE-RUNTIME, allowing linking with extra object
86 files to help with delivery of executables. (Thanks to François-René
88 * bug fix: data race in GENTEMP fixed - it can no longer return the
89 same interned symbol to multiple threads if called concurrently
90 * bug fix: interrupting LOADing of FASLs does not leave functions without
91 source locations. (lp#540276)
92 * bug fix: DYNAMIC-EXTENT-declared results of NOTINLINE local functions were
93 treated as if they were actually stack allocated (lp#1659964)
94 * bug fix: correctly handle the case of a non-local exit within a function
95 terminating the extent of dynamic-extent, dynamic-bound variables in the
96 presence of multiple-values (lp#1655011)
97 * bug fix: handling of SB-SYS:WITH-PINNED-OBJECTS in the interpreters (both
98 sb-eval and sb-fasteval) now actually pins objects on gencgc.
99 * bug fix: AVX registers are preserved during exceptions on x86-64 macOS.
100 * bug fix: (directory "SOMETHING/*/**/MORE") is no longer equivalent to
101 (directory "SOMETHING/**/MORE")
102 * bug fix: better console IO on Windows (lp#1660906)
104 changes in sbcl-1.3.14 relative to sbcl-1.3.13:
105 * minor incompatible change: the SB-PCL walker no longer recognizes
106 macros expanding into a DECLARE expression. This is not a language change,
107 since ANSI forbids such usage (X3J13 issue DECLARE-MACROS:FLUSH).
108 * enhancement: for several macros such as MULTIPLE-VALUE-{BIND,SETQ}, COND,
109 DO{,*,LIST}, {RESTART,HANDLER}-{BIND,CASE}, *CASE, conditions signaled
110 during macroexpansion point to the form that caused the problem more
112 * enhancement: the "--noinform" command-line option inhibits output from
113 save-lisp-and-die in addition to removing the startup banner.
114 * bug fix: PROCESS-KILL failed to return errno if the system call failed
115 * optimization: slightly more comprehensive treatment of the keyword
116 arguments to MAKE-ARRAY in compiler transformations.
118 changes in sbcl-1.3.13 relative to sbcl-1.3.12:
119 * enhancement: SET triggers package locks on undefined variables.
121 * enhancement: new Windows specific option to run-program, :escape-arguments
123 * enhancement: recompiling a MAKE-INSTANCE form with an initarg :INITARG
124 CONSTANT where CONSTANT names a constant variable picks up the new value
125 of CONSTANT in case it has been redefined. (lp#1644944)
126 * optimization: faster TYPEP on undefined at compile-time types and upcoming
127 class definitions. (lp#1082967)
128 * optimization: memory consumption of each STANDARD-OBJECT instance is
129 reduced by 2 words if the compact-instance-header feature is enabled.
130 * optimization: CONDITION instances are quicker to allocate.
131 * optimization: unoptimized calls to FILL on specialized vectors are now
132 just as fast as T vectors.
133 * bug fix: get-timezone returns corret DST on 64-bit Windows. (lp#1641058)
134 * bug fix: cross reference information in fasls is no longer incompatible
135 between different cores (lp#1648186)
137 changes in sbcl-1.3.12 relative to sbcl-1.3.11:
138 * enhancement: on x86-64, compiled functions loaded from fasl files
139 can not be moved, but can be freed, by GC. Additionally, COMPILE will
140 produce immobile code if SB-C::*COMPILE-TO-MEMORY-SPACE* is set to
141 :IMMOBILE. (Caution: the flag is experimental and subject to change.)
142 The benefits are better physical separation of code from data,
143 and potentially easier examination of live images by external tools.
144 * enhancement: the docstring for SAVE-LISP-AND-DIE has been amended to
145 say that the :ROOT-STRUCTURES parameter is not meaningless on gencgc,
146 depending on the platform.
147 * bug fix: calling a named function (e.g. a DEFUN) concurrently with
148 redefining that same function could lead to execution of random bytes.
149 * bug fix: yes-or-no-p accepts formatter functions (lp#1639490)
150 * bug fix: better handling of exceptions on macOS.
152 changes in sbcl-1.3.11 relative to sbcl-1.3.10:
153 * minor incompatible change: SB-EXT:*INTEXP-MAXIMUM-EXPONENT* is removed.
154 * enhancement: TRACE ... :REPORT {TRACE,NIL} now work as advertised in the
155 documentation string (based on patch by Patrick Stein)
156 * enhancement: support unboxed signed-word structure slots on x86, x86-64
157 and ARM64. (lp#377616)
158 * optimization: faster logical bit-array operations on multidimensional
160 * optimization: better GC performance in the presence of many threads.
161 (patch by Ilya Perminov, lp#1339924)
162 * optimization: multiple-value-call is optimized with multiple argument
163 forms, not just one. (lp#753803)
164 * bug fix: MAKE-ALIEN-STRING returns the number of allocated bytes as a
165 second value as advertised (reported by Johann 'Myrkraverk' Oskarsson)
166 * bug fix: when TO-READTABLE is supplied to COPY-READTABLE, it will
167 contain only the macros in FROM-READTABLE and no others. (lp#1631506)
168 * enhancement: gencgc has been modified for x86-64 on Linux and macOS
169 to a support mark-and-sweep as well as the traditional copying strategy.
170 It is conceivable that some applications might be adversely affected.
171 Please see ':immobile-space' in 'base-target-features.lisp-expr'
172 for further details, and possible reasons to disable this feature.
173 * enhancement: x86-64 supports shrinking the fixed overhead in a structure
174 from 2 words to 1 word, reducing memory consumption in applications
175 which create many small structures.
177 changes in sbcl-1.3.10 relative to sbcl-1.3.9:
178 * enhancement: more compact low-level error signaling code
179 * enhancement: more compact encoding of cross-reference information
180 * optimization: faster out of line fixnum-float comparisons.
181 * optimization: filling a known simple-vector with a constant value
182 is about as fast in unoptimized code as in code compiled with (SPEED 3),
183 and the x86-64 implementation is able to use SSE instructions.
184 * bug fix: correctly handle the case of a non-local exit within a function
185 terminating the extent of dynamic-extent functions and variables in the
186 presence of multiple-values (lp#1563127)
187 * bug fix: restore builds on the latest OSX with the latest Xcode
190 changes in sbcl-1.3.9 relative to sbcl-1.3.8:
191 * minor incompatible change: NAMESTRING prefers to return a BASE-STRING
192 instead of (ARRAY CHARACTER (*)) when possible.
193 * enhancement: cached make-instance/allocate-instance constructors can now
194 get garbage collected.
195 * optimization: better performance for some unoptimized operations on
197 * bug fix: using the options :LOCAL-NICKNAMES and :LOCK in the same
198 DEFPACKAGE form no longer signals a bogus error
200 changes in sbcl-1.3.8 relative to sbcl-1.3.7:
201 * minor incompatible change: the system now understands that the CONDITION
202 type is disjoint with many other system types.
203 * minor incompatible change: argument types in condition report functions
204 are now declared (in combination with the above change, this can result in
205 early detection of erroneous code).
206 * enhancement: simple arrays of any rank can be stack-allocated
207 on platforms supporting stack allocation of vectors.
208 * optimization: improved type derivation for FIND, POSITION, COUNT, SEARCH,
209 MISMATCH and other array and sequence functions.
210 * optimization: ALLOCATE-INSTANCE is now as fast as MAKE-INSTANCE.
211 * optimization: more efficient CHANGE-CLASS.
212 * bug fix: versions of getresuid() and getresgid() in SB-POSIX no longer
213 cause memory faults, and should work properly (lp#1603806, reported by
215 * bug fix: handle ENOENT from getprotobyname() (lp#1596043, reported by
218 changes in sbcl-1.3.7 relative to sbcl-1.3.6:
219 * bug fix: preserve the name of the destructive function for the destroyed
220 constant and important result warnings, even when declared NOTINLINE.
221 * optimization: faster operations on list-sets.
222 * optimization: better type derivation of set functions.
224 * optimization: load-time TLS-INDEX assignment, and other
225 microoptimizations, on x86.
231 ** REMOVE, REMOVE-DUPLICATES, DELETE and DELETE-DUPLICATES on lists.
233 changes in sbcl-1.3.6 relative to sbcl-1.3.5:
234 * bug fix: do not insert conditional newlines in print-unreadable-object
235 (lp#1398290). This reverses a change made in lp#488979 which reversed
236 a fix advertised in release 0.8.14 to pass the GCL ANSI Test Suite.
237 * bug fix: constant negative rotations of 32-bit quantities are compiled
238 correctly on x86-64 and arm. (lp#1586614, reported by Guillaume Le
241 changes in sbcl-1.3.5 relative to sbcl-1.3.4:
242 * enhancement: the platform's strtod() is exposed as SB-POSIX:STRTOD
243 * enhancement: speed up debug info creation for highly nested functions.
245 * enhancement: the interleaved structure slot optimization from
246 release 1.2.6 has been ported to all architectures.
247 * enhancement: support run-program I/O redirection into lisp streams on
249 * bug fix: better wording in missed optimization note. (lp#1003265)
250 * bug fix: interpreted (CAS SVREF) was broken
251 * bug fix: support CLISP as build host for ARM (lp#1568256, thanks to Tomas
254 changes in sbcl-1.3.4 relative to sbcl-1.3.3:
255 * enhancement: who-sets and who-references work on DEFGLOBAL. (lp#1552997)
256 * enhancement: CONSTANTP understands backquote.
257 e.g. (CONSTANTP '`(0 (,CHAR-CODE-LIMIT))) => T
258 * optimization: improvements to sequence functions: CONCATENATE, SUBSTITUTE,
260 * bug fix: SB-EVAL does not signal an error for (THE KEYWORD :FOO)
261 * bug fix: a DEFTYPE name that is redefined into a DEFSTRUCT name
262 is less likely to cause confusion in the compiler.
263 * bug fix: DOCUMENTATION works as intended for classes with non-standard
265 * bug fix: (TYPEP <extended-sequence> <extended-sequence-class>) no longer
266 returns NIL in certain situations
267 * bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE accept class objects as
269 * bug fix: MAKE-SEQUENCE, MAP, CONCATENATE and MERGE expand DEFTYPEs in
272 changes in sbcl-1.3.3 relative to sbcl-1.3.2:
273 * enhancement: warn about argument mismatch for functions passed as
274 arguments to other functions (e.g. REDUCE, MAP) at compile-time.
275 * optimization: functions accepting other functions (e.g. REDUCE, FIND) can
276 now be constant-folded if all function arguments are declared as foldable.
277 * optimization: improved logical operations on integers of unknown type.
278 * bug fix: exception handling no longer leaks memory on OS X. (lp#326238)
280 changes in sbcl-1.3.2 relative to sbcl-1.3.1:
281 * enhancement: {READ,WRITE}-SEQUENCE are much faster for some combinations
282 of short sequences and stream types
283 * enhancement: MAKE-LIST's result can be stack-allocated on x86-64
284 * bug fix: WRITE-SEQUENCE no longer fails to write lists containing integers
286 * bug fix: LOGTEST (and hence ODDP) no longer conses when given fixnum
287 arguments and small bit positions. (lp#1277690)
288 * bug fix: READ-FROM-STRING compiler-macro does not permute its arguments
289 * bug fix: DEFUN of a function name that collides with a system-generated
290 structure accessor does not confuse the runtime. (lp#540063)
291 * bug fix: heap corruption from miscompiled RESTART-BIND. (lp#1530390)
293 changes in sbcl-1.3.1 relative to sbcl-1.3.0:
294 * enhancement: SB-THREAD support for ARM64.
295 * enhancement: compiling an out-of-line DEFSTRUCT constructor call
296 will warn if a defaulted value is incompatible with its slot type.
297 * enhancement: a local INLINE declaration on a structure constructor
298 will work as intended, subject to any other factors that inhibit
299 inlining, even if the DEFSTRUCT was not itself within a global
300 INLINE proclamation for the named constructor
301 * enhancement: SB-EXT:DYNAMIC-SPACE-SIZE is now defined for cheneygc.
302 * enhancement: x86[-64] platforms support SB-EXT:CAS on structure slots
304 * enhancement: the interleaved structure slot optimization from
305 release 1.2.6 has been ported to 32-bit x86, Sparc, PowerPC, ARM64.
306 * enhancement: SB-THREAD:JOIN-THREAD signals a proper error when an attempt
307 is made to join the current thread
308 * bug fix: NTH-VALUE does not cause stack overflow. (lp#1511419)
309 * bug fix: structure constructor type checking is better. (lp#1508735)
310 * bug fix: supplied-p variables for unused optional or keyword variables no
311 longer confuse SB-DI:PARSE-COMPILED-DEBUG-FUN-LAMBDA-LIST (and thus the
312 backtrace machinery) (lp#1498644)
313 * bug fix: Backtrace correctly handles undefined-function frames on MIPS.
314 * bug fix: WITH-FLOAT-TRAPS-MASKED correctly clears accrued traps on MIPS
315 (fixes issues with floating-point type derivation in the compiler).
316 * bug fix: FLOAT-NAN-P and FLOAT-TRAPPING-NAN-P now work correctly on MIPS
318 * bug fix: MIPS context register access now masks to 32 bits (fixing issues
319 parsing negative-fixnum values for internal-error arguments and escaped
320 debug variables on 64-bit CPUs).
321 * bug fix: (SETF SAP-REF-DOUBLE) with constant offset on big-endian MIPS
323 * bug fix: Callback parameter (argument) handling on MIPS is now vastly
325 * bug fix: %DECREMENT-SEMAPHORE adjusts the remaining timeout after a
328 changes in sbcl-1.3.0 relative to sbcl-1.2.16:
329 * minor incompatible change: the environment passed to a macro/setf/deftype
330 expander is not always an object of type SB-KERNEL:LEXENV.
331 It can be nil, as is permissible by the standard.
332 * enhancement: ported to ARM64 Linux.
333 * enhancement: a new interpreter is included which has many benefits
334 over sb-eval. It is disabled by default. See src/interpreter/README
335 for instructions to enable it, and further details.
336 * bug fix: calling COMPILE when SB-EXT:*EVALUATOR-MODE* was :INTERPRET
337 would fail to perform "normal semantic processing such as macro expansion"
338 as stipulated by X3J13 issue LOAD-TIME-EVAL.
339 * bug fix: SB-UNICODE:CONFUSABLE-P no longer treats "<" and the empty
340 string as confusable. (lp#1504739)
341 * bug fix: (ASSERT (COMPUTE-IT ...)) would expand incorrectly
342 if COMPUTE-IT was a local macro that shadowed a global function.
343 * bug fix: SB-POSIX:CFSETISPEED and SB-POSIX:CFSETOSPEED now work properly
344 on platforms that use only the minimum specified set of fields in struct
345 termios (verified on Linux, still known not to work on FreeBSD and NetBSD,
346 very probably others). (partial fix for lp#1500951)
348 changes in sbcl-1.2.16 relative to sbcl-1.2.15:
349 * enhancement: by default, timers with a repeat interval do not "catch up"
350 by repeatedly calling their function after a clock discontinuity such as a
351 suspend and resume cycle
352 * bug fix: correctly restore multiple values on the stack in the presence of
353 alien calls. (lp#1489590)
354 * bug fix: MAKE-STRING-OUTPUT-STREAM enforces that :ELEMENT-TYPE
355 is a subtype of CHARACTER.
356 * bug fix: an EQL method specializer no longer causes garbage retention
357 if there are no extant methods using the specializer. (lp#492851)
359 changes in sbcl-1.2.15 relative to sbcl-1.2.14:
360 * new feature: DEPRECATION declaration for functions, variables and types
361 causes {EARLY,LATE,FINAL}-DEPRECATION-WARNING to be signaled when subject
362 of the declaration is used. Integrated with DESCRIBE, DOCUMENTATION and
363 SB-CLTL2:{VARIABLE,FUNCTION}-INFORMATION. Documented in the "Deprecation"
364 section of the manual.
365 * enhancement: ASDF updated to 3.1.5. (lp#1476867)
366 * enhancement: definitions within PROGN get proper source locations when
367 compiled (needs latest Slime to take advantage of this). (lp#1473147)
368 * enhancement: source locations for DEFCLASS slots now point directly to the
369 slot definitions, not the whole DEFCLASS form.
370 * bug fix: better source location in the presence of quoted forms.
372 * bug fix: better source locations inside backqoute. (lp#1361502)
373 * bug fix: HANDLER-BIND requires that the handler-function be
374 a function designator at the time of binding establishment. (lp#1480679)
375 * bug fix: inlined functions surrounded by nested macrolets are properly
378 changes in sbcl-1.2.14 relative to sbcl-1.2.13:
379 * minor incompatible change: The name of a compiled anonymous lambda
380 as returned by the third value of FUNCTION-LAMBDA-EXPRESSION can have
381 a lambda-list-like list following the introductory LAMBDA that is not
382 in general a syntactically valid lambda list. Specifically, it won't
383 retain default values, supplied-p variables, or &KEY or &AUX bindings.
384 * enhancement: DESTRUCTURING-BIND has been totally reimplemented from
385 scratch to address a handful of performance and correctness issues.
386 Some minor behavioral differences exist regarding order of evaluation
387 of default forms for unsupplied &OPTIONAL and &KEY arguments
388 when nested destructuring patterns are involved.
389 (lp#707556, lp#707573, lp#707578, lp#708051)
390 * enhancement: DEFCONSTANT and DEFSTRUCT respect package locks. (lp#1186238,
392 * enhancement: sb-unicode:normalize-string has a new optional argument,
393 FILTER, a callback which controls which decomposed characters are
394 collected. Useful for stripping away diacritics more efficiently.
395 * bug fix: (TYPE-OF ARRAY) for a non-simple array is subject to change
396 after a call of ADJUST-ARRAY. (lp#1333731)
397 * bug fix: Dynamic-extent allocation with a loop between allocating a value
398 and the start of its environment no longer discards the allocated data
399 when the loop is taken. (lp#1472785)
400 * bug fix: Variable-reference elimination no longer generates incorrect code
401 under certain circumstances. (lp#1446891)
402 * bug fix: variables with EQL types are no longer treated as constants by
403 VOPs, which caused problems with closures being allocated for such
404 variables, but they remained unused. (lp#1390149)
405 * bug fix: Windows installer generates registry key name
406 correctly. (lp#1476447)
408 changes in sbcl-1.2.13 relative to sbcl-1.2.12:
409 * incompatible change: on success, TRY-SEMAPHORE and WAIT-ON-SEMAPHORE
411 * enhancement: WAIT-ON-SEMAPHORE accepts a decrement parameter
412 * enhancement: JOIN-THREAD allows distinguishing timeout vs. abort in all
414 * enhancement: On Windows DBG_PRINTEXCEPTION_C is handled and its message is
415 printed. (lp#1437947)
416 * bug-fix: TRUENAME works properly on broken symlinks presented as
417 directories. (lp#1400003)
418 * bug fix: Inlined DPB and DEPOSIT-FIELD don't interfere with left-to-right
419 order of argument evaluation. (lp#1458190)
420 * bug fix: (SETF (LDB (BYTE 1 2 JUNK) X) 0) is rightly rejected.
421 * bug fix: DEFSETF lambda lists should not permit argument destructuring.
422 * bug fix: calls to (SETF SLOT-VALUE) on a missing slot would in certain
423 situations incorrectly return the result of a SLOT-MISSING method
424 instead of always returning the new value. (lp#1460381)
425 * bug fix: a DEFMACRO occurring not at toplevel and capturing parts of
426 its lexical environment (thus being a closure) caused expressions
427 involving the macro name to cause corruption in the pretty-printer
428 due to faulty introspection of the lambda list of a closure.
429 * bug fix: out of line MAP/MAP-INTO check that the results produced by the
430 function are of the matching sequence type. (lp#1459581)
431 * bug fix: pretty-printing of '(LET `((,X ,Y)) :B) is handled correctly.
433 changes in sbcl-1.2.12 relative to sbcl-1.2.11:
434 * minor incompatible change: the SB-C::*POLICY* variable is no longer
435 a list. Code which manipulated it as such (including but not limited
436 to non-bundled releases of ASDF) will need to be revised.
437 * enhancement: The input stream for COMPILE-FILE implements
439 * enhancement: EVAL errors that occur by way of LOAD report the starting
440 line and column number of the erring toplevel form. (lp#565247)
441 * optimization: better MAP and MAP-INTO on known vector result types.
442 * bug fix: Read/modify/write macros accessing a place which is a
443 composition of CAR+CDR operations, such as (SHIFTF (CADR X) (ELT V 0)),
444 do not access subforms more than once. (lp#1450968)
445 * bug fix: short form of DEFSETF no longer allows trailing junk.
446 * bug fix: DEFINE-MODIFY-MACRO respects the provisions of CLHS 5.1.3
447 regarding argument evaluation order. (lp#1452539)
448 * bug fix: POP works as specified in CLHS if the setter for its
449 argument has a side-effect on the existing CAR value. (lp#1454021)
450 * bug fix: Reading "#()" with a positive numeric argument signals a
451 reader error. As specified, reading "#1()" has undefined consequences,
452 so correct portable code should be indifferent to this. (lp#1252100)
453 * bug fix: Malformed reader conditionals such as "(#-no-such-feature)"
454 and "(#+sbcl)" no longer parse as NIL. (lp#1454400)
456 changes in sbcl-1.2.11 relative to sbcl-1.2.10:
457 * enhancement: SET-PPRINT-DISPATCH will warn when given an expression in
458 which any part is unrecognizable as a legal type-specifier.
459 The dispatch table will be altered, but the new entry is disabled.
460 Subsequent type-defining forms will cause pprint-dispatch tables to
461 re-examine whether any disabled entries should be enabled. (lp#1429520)
462 * enhancement: Loading code containing calls to a deprecated function will,
463 under most circumstances, signal warnings similar to compiling such code.
464 The usual caveat holds about not detecting calls through a computed name,
465 as in (funcall (intern "DEPRECATED-FUN" "SB-EXT")).
466 * enhancement: (SB-EXT:COMPILE-FILE-LINE) is a new macro that expands
467 to a constant (VALUES integer integer) indicating the source line/column
468 from which it was read, intended for logging Lisp runtime errors in
469 a style similar to that afforded by the C preprocessor __LINE__ macro.
470 Similarly (SB-EXT:COMPILE-FILE-POSITION) returns a position in characters.
471 * enhancement: improved source locations for VOPs, alien types and
473 * bug fix: functions in :FINAL deprecation have the correct docstring.
474 No visible change, as no such functions presently exist. (lp#1439151)
475 * bug fix: (SETF (FDEFINITION this) (FDEFINITION OTHER)) signals an error
476 if OTHER names either a macro or special-operator. (lp#1439921)
478 changes in sbcl-1.2.10 relative to sbcl-1.2.9:
479 * minor incompatible change: all SOCKINT::WIN32-* functions have been
480 deprecated with EARLY deprecation state
481 * minor incompatible change: performing introspection via the system-internal
482 SB-INT:INFO function could expose that :TYPE :TRANSLATOR is not necessarily
483 a function, as it always was before. (Affects swank-fancy-inspector)
484 * enhancement: The value of SXHASH on bit-vectors of length equal to the
485 word size now depends on the vector's contents instead of being constant;
486 its value on bit-vectors of length divisible by the word size now depends
487 also on the contents of the vector's last word.
488 * bug-fix: sb-bsd-sockets on win32 uses proper C function declarations.
490 * bug fix: A new dead code elimination phase removes dead code loops
491 that confuse stack analysis. (lp#1255782, lp#308914)
492 * bug fix: A toplevel form which was simple enough to bypass the main
493 compiler in COMPILE-FILE, and which contained an empty SETQ or PROGN
494 would produce an invalid fasl file. (lp#1427050)
495 * bug fix: The compiler no longer signals an internal error when
496 encountering invalid FUNCTION forms like (function 1)
497 * bug fix: express proper dependencies in the ASDF contrib, to support
498 systems where make runs in parallel. (lp#1434768; thanks to Nikhil
501 changes in sbcl-1.2.9 relative to sbcl-1.2.8:
502 * minor incompatible change and bug fix: unboxed numeric constants
503 on x86oids are arranged in memory differently, and the disassembler
504 does not show them separately in DISASSEMBLE, but does
505 if DISASSEMBLE-CODE-COMPONENT is used. (lp#1421987)
506 * optimization: The compiler's treatment of type specifiers makes
507 it slightly faster and more memory-efficient. Portable code
508 should be indifferent to this change, however, users of
509 SB-INTROSPECT:FUNCTION-TYPE might notice that (MEMBER T NIL)
510 and (MEMBER NIL T) are both internally collapsed to the former,
511 so that the latter can never be obtained as part of an FTYPE.
512 * optimization: a TYPEP call in which the second argument is not a
513 QUOTE form but nevertheless recognized as a compile-time constant
514 might open-code the test. One scenario for this involves backquote,
515 such as (TYPEP x `(my-type ,some-arg)). Code which relied upon
516 deferring until runtime should declare (NOTINLINE TYPEP).
517 [Due to the sematic constraints of DEFTYPE etc in in CLHS 3.2.2.3,
518 code requiring delayed evaluation could be unportable though.]
519 * enhancement: unused variables at the top-level are now reported.
521 * bug fix: DEFCLASS handles cyclic {super,meta}class relations better
523 * bug fix: compiler no longer signals an error when compiling certain
524 function calls. (lp#1416704, lp#404441, lp#1417822, lp#1234919)
525 * bug fix: compiler doesn't stumble on a LOGIOR transform. (lp#1389433)
526 * bug fix: more robust debugger and backtraces. (lp#1413850, lp#1099500,
527 lp#1412881, lp#945261, lp#1419205, lp#1409402)
528 * bug fix: files larger than 4GB can now be compiled.
529 * bug fix: x86 truncated results from 64-bit foreign functions to 32 bits.
530 * bug fix: file-position didn't work on large files on win32. (lp#1271545)
531 * bug fix: callbacks from foreign threads can work without enabling
533 * bug fix: sb-introspect:function-lambda-list works properly on interpeted
535 * bug fix: ADJUST-ARRAY properly handles non-adjustable arrays. (lp#886418)
536 * bug fix: compiler no longer fails to dump a multidimensional array
537 constant involving a circular reference to itself
538 * bug fix: conditional and nested DX allocation no longer confuse the
539 compiler in STACK analysis. (lp#1044465)
540 * bug fix: sb-rotate-byte constant folding bug fixed. (lp#1423682)
542 changes in sbcl-1.2.8 relative to sbcl-1.2.7:
543 * enhancement: better error and warning messages. (lp#1314767, lp#736383)
544 * enhancement: backtrace for invalid argument count produces the exact
545 supplied arguments including the extra ones, on x86, x86-64 and ARM.
546 * enhancement: a STYLE-WARNING is signaled for DEFSTRUCT accessors which
547 are used before the structure is defined; similarly for the predicate.
548 * optimization: FORMAT NIL with only ~a and string arguments is transformed
550 * optimization: POSITION and FIND when inlined into code that is compiled
551 with qualities of safety < 2 and speed > space will no longer signal
552 an error on circular lists, but will potentially loop forever if given
553 no :END constraint. As was always the case, calls that are not inlined
554 are safe regardless of lexical policy.
555 * bug fix: CLOS methods compiled with (OPTIMIZE (DEBUG 0))
556 no longer cause debugger failure when printing a backtrace
557 * bug fix: more resilience to deleted code. (lp#1308328, lp#1390544)
558 * bug fix: the CLHS example of MAKE-LOAD-FORM involving TREE-WITH-PARENT
559 did not work, and now it does.
561 changes in sbcl-1.2.7 relative to sbcl-1.2.6:
562 * optimization: returning constant values refers to preboxed constants
563 more reliably. (lp#1398785)
564 * enhancement: a STYLE-WARNING is produced if a compiler-macro is defined
565 for a function after at least one ordinary (not inlined) call to that
566 function was compiled, indicating a likely compilation order problem.
567 Likewise a warning ensues if a call is compiled to a function
568 that is subsequently proclaimed INLINE.
569 * enhancement: always lose() when something goes wrong while saving a core
570 (instead of just printing an error on stderr in some situations).
571 * enhancement: frames in the debugger are now restartable by default.
572 * bug fix: restore error handling on Windows x86.
573 * bug fix: MAKE-SEQUENCE detects type errors in its :INITIAL-ELEMENT
574 at compile-time when possible. (lp#330299)
575 * bug fix: parsing of malformed type specifiers no longer results
576 in a memory-fault-error.
577 * bug fix: LOOP properly destructures nested lists in WITH.
578 * bug fix: MACROEXPANDing the redefinition of an alien structure type no
579 longer signals the wrong error.
580 * bug fix: PROGV doesn't get confused by forced DEBUG 3 (lp#1405456).
582 changes in sbcl-1.2.6 relative to sbcl-1.2.5:
583 * enhancement: SERVE-EVENTS uses the poll() system call in lieu of
584 select() if the OS has the former. Previously poll() was used
585 only if waiting on exactly one file descriptor.
586 * enhancement: efficiency of access to untagged structure slots is improved
587 on x86-64, and the order of slots in memory is exactly as specified by
588 defstruct, simplifying use of structures as arguments to foreign calls.
589 * bug fix: SB-DEBUG:ARG now works in all TRACE options which evaluate forms.
591 * bug fix: GC memory corruption during internal memory handling.
592 * bug fix: duplicate effective-slot-definition objects as compared
593 by EQ on name could be present in CLASS-SLOTS of a class whose
594 metaclass was structure-class or condition-class. (lp#1049423)
595 * bug fix: HANDLER-BIND with empty bindings works again; regression in
597 * bug fix: ATOMIC-INCF works on structure slots in interpreted code.
599 * bug fix: MAKE-ARRAY properly handles character types like (eql #\a) and
600 (member #\a #\c). (lp#1392068)
601 * bug fix: READ sometimes accidentally preserved a whitespace character
602 after a token when it should not have. (lp#327790)
604 changes in sbcl-1.2.5 relative to sbcl-1.2.4:
605 * enhancement: sb-bsd-sockets now has basic support for IPv6
606 * enhancement: An sb-unicode package has been added, containing
607 many functions related to handling Unicode text
608 * enhancement: The reader now normalizes symbols to Normalization
609 Form KC (NFKC). This behavior can be disabled with
610 SB-EXT:READTABLE-NORMALIZATION
611 * enhancement: a style-warning is signaled if OPTIMIZE declarations
612 multiply specify a quality with differing values. (lp#310267)
613 * bug fix: conservatively pointed to pages wipe out unused dwords so
614 that they cannot act as false roots in turn.
615 * bug fix: the walker's handling of lexical variable and symbol-macro
616 bindings is improved (lp#375326, lp#1368305)
617 * bug fix: HANDLER-{BIND,CASE} no longer drop into ldb when a clause
618 contains an undefined condition type; regression in 1.1.19 (lp#1378939)
619 * bug fix: in interpreted code, inequality predicates did not type-check
620 arguments that weren't examined, and a 1-argument use of MIN or MAX
621 accepted a complex number. (lp#1373702)
622 * bug fix: APROPOS and APROPOS-LIST handle inherited symbols correctly.
623 (lp#1364413, thanks to Zach Beane)
625 changes in sbcl-1.2.4 relative to sbcl-1.2.3:
626 * enhancement: the sequence functions MAP, CONCATENATE and MERGE now call
627 the new generic functions SEQUENCE:MAP, SEQUENCE:CONCATENATE and
628 SEQUENCE:MERGE respectively when the specified result type designates an
630 * bug fix: Wrong binding order of supplied-p parameters in macro lambda
632 * bug fix: VALIDATE-SUPERCLASS returns T when the superclass is the
633 universal superclass (lp#1332983)
634 * bug fix: reading an uninterned symbol whose print name has the
635 syntax of an integer signals an error. (lp#310062)
636 * bug fix: the walker is less likely to be confused when walking LET* forms
637 with special bindings and use of those bindings and others of the same
639 * bug fix: a rare bug affecting 32-bit platforms resulting in a
640 fatal condition with the message "Globaldb rehash failure" has been fixed.
642 changes in sbcl-1.2.3 relative to sbcl-1.2.2:
643 * enhancement: DOCUMENTATION works on instances of
644 FUNCALLABLE-STANDARD-CLASS
645 * enhancement: ASSERT reports arguments of calls to lexical functions in
646 additional to global functions.
647 * enhancement: ASDF updated to 3.1.3
648 * enhancement: UIOP can be loaded without ASDF.
649 * bug fix: some methods on CHANGE-CLASS did not finalize the new class
650 before accessing its class-precedence list.
651 * bug fix: CHANGE-CLASS no longer fails on unbound slots in the source
653 * bug fix: CHANGE-CLASS signals an appropriate error when the destination
654 class is a FORWARD-REFERENCED-CLASS.
655 * bug fix: CHANGE-CLASS no longer signals bogus TYPE-ERRORs for slots for
656 which initargs have been supplied.
657 * bug fix: saving cores on ARM was broken since the introduction of GENCGC.
659 * bug fix: macroexpanding a backquoted expression involving ",."
660 outside of the compiler failed. (lp#1354623)
662 changes in sbcl-1.2.2 relative to sbcl-1.2.1:
663 * incompatible change: the #\` ("backquote") reader macro was reimplemented
664 to support robust pretty-printing. Reading a form involving #\` produces
665 an invocation of the QUASIQUOTE ordinary macro which may contain subforms
666 that are not lists. Code that unportably attempts operations on
667 un-evaluated forms resulting therefrom, e.g.
668 (SUBST a b (read-from-string "`(x (,y))"))
669 might generate incorrect results and/or errors.
670 * enhancement: support for GNU/kFreeBSD x86.
671 * enhancement: ATOMIC-INCF and ATOMIC-DECF can operate on (CAR x), (CDR x)
672 and DEFGLOBAL variables of type fixnum.
673 * enhancement: arithmetic constant reduction is now performed on defconstant
674 constants too. (lp#1337069).
675 * bug fix: certain ftype proclamations containing &optional t &rest t no
676 longer cause subsequent definitions to signal bogus style-warnings.
677 * bug fix: #\Bell and #\Bel now read to different characters. (lp#1319452).
678 * bug fix: CAS SYMBOL-VALUE on locally special variables didn't work.
681 changes in sbcl-1.2.1 relative to sbcl-1.2.0:
682 * enhancement: GENCGC is enabled on ARM.
683 * enhancement: better error reporting for invalid calls to local functions.
684 * enhancement: support for GNU/kFreeBSD distributions. (lp#1079954, thanks
686 * enhancement: experimental support for threads on NetBSD/x86-64. (thanks
688 * enhancement: support for DragonFly BSD. (lp#1292845, thanks to Vasily
690 * bug fix: TYPE-OF must not return AND/OR/NOT expressions.
692 * bug fix: accessing NIL arrays stopped producing errors. (lp#1311421)
693 * bug fix: DISASSEMBLE no longer prints unwanted stuff. (lp#1251861)
694 * bug fix: compiling SVREF on unknown types no longer produces scary errors.
696 * bug fix: assorted LOOP fixes and enhancements. (lp#645534, lp#1322923,
697 lp#700538, lp#613876, lp#695286, lp#798388)
698 * bug fix: silence compiler notes from the SEARCH transform. (lp#1071310)
699 * bug fix: array type intersection handles T and unknown element types
700 correctly. (lp#1258716)
701 * bug fix: fix a corner case in array type unparsing that would result in
702 misleading translations from our internal type representation.
703 * bug fix: array-rank now sees through union and intersection types.
705 * bug fix: when DECLARE expressions are in the wrong place, be careful not
706 to attempt to evaluate the subforms. (lp#573747; thanks to Roman
708 * bug fix: misplaced and missing declarations in DEFTRANSFORM. (lp#1066451)
709 * bug fix: FBOUNDP returned NIL for a class of incorrect function names
710 instead of signaling an error. (lp#1095483)
711 * bug fix: fix a compile-time AVER in regalloc: lifetime analysis
712 used to (rarely) introduce duplicate conflict markers in a single
713 TN/block pair. (lp#1327008)
715 changes in sbcl-1.2.0 relative to sbcl-1.1.18:
716 * bug fix: read-time-eval backquote context mixup. (lp#1321047)
717 * enhancement: when SAVE-LISP-AND-DIE fails due multiple threads, the
718 report of the signaled conditions lists currently running threads.
719 * enhancement: ported to ARM linux.
720 * enhancement: sb-gmp contrib has been updated. (lp#1305266)
721 * enhancement: new contrib sb-mpfr by Stephan Frank.
722 * bug fix: MAKE-SEQUENCE works with sequence types defined via DEFTYPE
723 (lp#1315846, thanks to Mark Cox)
724 * bug fix: SET-[DISPATCH-]MACRO-CHARACTER should coerce a symbolic
725 function-designator to a function only as needed. (lp#1012335)
726 * bug fix: remove references to asdf-install from the manual. (lp#1207544,
727 thanks to Thomas Hlavaty)
728 * bug fix: handle --without-xxx options to make.sh more carefully.
729 (lp#1246665, thanks to Richard M Kreuter)
730 * bug fix: prevent maybe-delete-exit from doing semantically broken things
731 with local exits. (lp#309099, lp#518099, lp#533930)
732 * bug fix: attempts to subclass BUILT-IN-CLASSes signal errors, as required
735 changes in sbcl-1.1.18 relative to sbcl-1.1.17:
736 * optimization: COERCE is now more effecient for more cases when the type is
737 known at compile-time.
739 * bug fix: correctly inherit condition initforms. (lp#1300904)
740 * bug fix: properly pprint literal functions inside nested lists.
742 * bug fix: more-correctly handle array-type unity (broken for ages, causing
743 compilation problems since 1.1.13.x due to smarter TYPEP type propagation,
744 reported by jasom in #lisp).
746 changes in sbcl-1.1.17 relative to sbcl-1.1.16:
747 * enhancement: printing backtraces respects
748 SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* when printing call arguments
750 * optimization: defstruct out-of-line accessor are now as fast as inlined.
752 * bug fix: INVOKE-RESTART-INTERACTIVELY no longer refuses to invoke RESTART
753 instances with a test-function (reported by Vivitron in #sbcl)
754 * bug fix: STREAM-ERROR-POSITION-INFO fails in fewer situations (lp#1264902)
755 * bug fix: Change COND error message (lp#1254511)
756 * bug fix: LOAD is no longer confused when called on a directory.
758 * bug fix: MAKE-CONDITION reports names of missing condition classes
759 properly (lp#1199223)
760 * bug fix: restore building with clang. (lp#1293643)
761 * bug fix: restore building on SPARC (broken since 1.1.15).
762 * bug fix: improved FreeBSD support.
763 * bug fix: PPC floating point conversion corrupted stack.
765 changes in sbcl-1.1.16 relative to sbcl-1.1.15:
766 * minor incompatible change: improve read/print consistency for pathnames on
767 Win32, by using the circumflex character #\^ as the escape character.
769 * enhancement: SB-EXT:DEFINE-LOAD-TIME-GLOBAL. (lp#1253688)
770 * enhancement: Loading fasls with symbols from an undefined package includes
771 the name of the symbol in the error message.
772 * bug fix: problems when redefining classes and doing TYPEP on classes
773 concurrently. (lp#1272742)
774 * bug fixes to the x86-64 XCHG instruction:
775 ** it was misencoded when used with RAX, R8-R15 registers. (reported by
777 ** it was misencoded when used to exchange EAX with itself.
778 ** the disassembler wrongly printed XCHG RAX, R8 and the corresponding
779 32- and 16-bit variations as NOP.
780 * bug fix: the disassembler outputs source annotations in the right place
781 and no longer randomly drops some of them. (lp#1249205)
782 * bug fix: fix commutative-arg-swap from introducing undumpable structures
783 into code, prevent code with errors from being compiled. (lp#1276282)
784 * bug fix: pathnames with :back in their directory component are succeffully
786 * bug fix: the deterministic profiler now uses ENCAPSULATE functionality to
787 wrap functions around. (lp#309086)
789 changes in sbcl-1.1.15 relative to sbcl-1.1.14:
790 * new feature: the iterative spilling/coloring register allocator developed
791 by Alexandra Barchunova during Google Summer of Code 2013 is now merged
792 in. By default, it only activates for functions that optimize with
793 (speed 3) and (> speed compilation-speed), but setting
794 sb-regalloc:*register-allocation-method* to :iterative forces its
795 execution. The previous behaviour can be obtained by instead setting that
796 variable to :greedy. Thanks again to Google for their support, and, more
797 crucially, to Alexandra Barchunova for her hard work.
798 * optimization: make-array with known element-type and unknown dimensions is
800 * optimization: make-array with unknown element-type is faster as well.
802 * enhancement: sb-ext:save-lisp-and-die on Windows now accepts
803 :application-type argument, which can be :console or :gui. :gui allows
804 having GUI applications without an automatically appearing console window.
805 * enhancement: reduced conservativism on GENCGC platforms:
806 conservative roots must be valid-looking tagged pointers or point
807 within a code object, not merely point to within the allocated part
808 of a page, in order to pin a page.
809 * enhancement: support for "Mac Roman" external format.
810 * enhancement: encapsulation of named generic functions now happens without
811 altering the identity of the function bound to the name.
812 * bug fix: Windows applications without the console window no longer misbehave.
813 (patch by Wilfredo Velazquez, lp#1256034).
814 * bug fix: modular arithmetic optimizations do not stumble on dead branches
815 with bad constants. (reported by Douglas Katzman)
816 * bug fix: CLISP can be used again as a cross-compilation host.
817 (Thanks to Vasily Postnicov, lp#1261451)
818 * bug fix: run-program crashed with :directory nil. (lp#1265077)
820 changes in sbcl-1.1.14 relative to sbcl-1.1.13:
821 * optimization: complicated TYPEP tests are less opaque to the type
822 propagation pass. (lp#1229340)
823 * optimization: [N]BUTLAST perform a single pass over the list. (lp#1245697)
824 * optimization: EQUALP on structures with raw slots (double-float/complex)
825 no longer conses and is faster.
826 * optimization: RESTART-CASE expands to more compact code.
827 Thanks to Jan Moringen. (lp#1249055)
828 * enhancement: Top-level defmethod without defgeneric no longer causes
829 undefined-function warnings in subsequent forms. (lp#503095)
830 * enhancement: Better error messages for system errors on Windows.
831 * enhancement: run-sbcl.sh is usefully handled by rlwrap. Thanks to William
832 Cushing. (lp#1249183)
833 * enhancement: new function SB-EXT:ASSERT-VERSION->= accepts a version
834 specification (multiple integer arguments) and signals a continuable error
835 if the current SBCL version is lower (older) than the specification.
837 * enhancement: better ARRAY-RANK result derivation. (lp#1252108)
838 * bug fix: EQUALP now compares correctly structures with raw slots larger
840 * bug fix: contribs couldn't be built on Windows with MinGW.
841 * bug fix: Better pathname handling on Windows. (lp#922117)
842 * bug fix: OPEN reports a more meaningful error when an existing file is
843 opened for output with :if-exists :new-version. Thanks to Philip
844 Munksgaard. (lp#455381)
845 * bug fix: DEFSTRUCTs with NIL as a slot name no longer cause strange
846 CLOS-related errors. (lp#633911)
847 * bug fix: GC deadlocks caused by concurrent consing on Windows.
849 changes in sbcl-1.1.13 relative to sbcl-1.1.12:
850 * optimization: better distribution of SXHASH over small conses of related
852 * other improvements to SXHASH:
853 ** use the whole of the positive-fixnum range for SXHASH of fixnums
854 * enhancement: The error message when calling an undefined alien function
855 includes the name of the function on x86-64.
856 * enhancement: sb-ext:run-program now supports :environment on Windows.
857 * enhancement: ASDF is no longer required to load contribs at runtime.
859 * enhancement: when called with a symbol, FIND-RESTART no longer calls
860 COMPUTE-RESTARTS, making it faster and cons less (lp#769615)
861 * enhancement: FIND-RESTART and COMPUTE-RESTARTS handle huge restart
862 clusters better in some cases
863 * enhancement: SOME/ANY/other quantification higher-order functions no
864 longer cons. (lp#1070635)
865 * bug fix: forward references to classes in fasls can now be loaded.
867 * bug fix: don't warn on a interpreted->compiled function redefinition
868 from the same location. (patch by Douglas Katzman, lp#1042405)
869 * bug fix: Create vectors of proper internal length when reading literal
870 vectors from FASLs. (Reported by Jan Moringen)
871 * bug fix: COMPILE can now successfully compile setf functions.
872 (Reported by Douglas Katzman)
873 * bug fix: run-program performs more correct escaping of arguments on
874 Windows. (lp#1239242)
875 * bug fix: function-lambda-expression on generic functions returns the
877 * bug fix: (the [type] [constant]) now warns when [constant] matches
878 [type] except for the number of values. (Reported by Nathan Trapuzzano
880 * bug fix: signal errors in required cases of slot-definition initialization
881 protocol. (lp#309072)
882 * bug fix: run-sbcl.sh works better in the presence of symlinks on OS X.
883 (thanks to Stelian Ionescu, lp#1242643)
884 * bug fix: when given a restart object, FIND-RESTART checks whether the
885 restart is active and, when a condition is supplied, whether the restart
886 is associated to a different condition (lp#774410)
888 changes in sbcl-1.1.12 relative to sbcl-1.1.11:
889 * enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
890 shutdown(3). (thanks to Jan Moringen, lp#1207483)
891 * enhancement: document extensible sequences. (thanks to Jan Moringen,
893 * optimization: EQUAL and EQUALP transforms are smarter.
894 (thanks to Elias Martenson, lp#1220084)
895 * optimization: CHAR-EQUAL is faster for constant and base-char arguments.
896 * bug fix: probe-file now can access symlinks to pipes and sockets in
897 /proc/pid/fd on Linux. (reported by Eric Schulte)
898 * bug fix: SBCL can now be built on Solaris x86-64.
899 * bug fix: Floating point exceptions do not persist on Solaris anymore.
900 * bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
901 * bug fix: handle compiler-error in LOAD when it's not run from inside EVAL.
903 * bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base.
904 (thanks to Stephan Frank)
905 * bug fix: space allocation of result bignums in SB-GMP is more accurate.
906 (thanks to Stephan Frank, lp#1206191)
907 * bug fix: sb-safepoint can now reliably handle signal interruptions of
908 foreign code. (lp#1133018)
909 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
910 constructors no longer fails to merge actual and default initargs
911 (thanks to Jan Moringen, lp#1179858)
912 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
913 constructors handles non-KEYWORD initialization arguments more correctly.
914 * bug fix: loading the SB-SIMPLE-STREAMS contributed module no longer
915 clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, lp#884603)
916 * bug fix: class definitions with CPLs inconsistent with their metaclasses
917 are less likely to destroy the object system's integrity. (lp#309076)
918 * bug fix: restart clause parsing in RESTART-CASE is more in line with the
919 standard. (lp#1203585, thanks to Jan Moringen)
920 * bug fix: silence a note from RESTART-CASE under high-SPEED optimization
921 settings. (lp#1023721)
922 * bug fix: getting the order of arguments to
923 SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error
924 rather than a failed AVER. (reported by Paul Nathan)
925 * bug fix: Parsing of &optional/&key/&rest arguments now never overwrites
926 arguments during copying on x86 and x86-64; it may still happen on other
927 platforms when there are more fixed arguments than stack slots.
928 (reported by Jan Moringen)
930 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
931 * enhancement: support building the manual under texinfo version 5.
933 * enhancement: Windows builds no longer display the "Kitten of Death" message.
934 A warning is instead appended to the regular banner, and may be muted with
935 --noinform. (lp#728247)
936 * enhancement: support building under new linker handling of syscalls under
937 NetBSD. (thanks to Robert Swindells)
938 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
939 (regression since 1.1.9)
940 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
941 compiler macro. (thanks to Douglas Katzman).
942 * bug fix: signal a warning when defining a setf-function when a
943 setf-expander is already present. (thanks to Douglas Katzman).
944 * bug fix: improved threading on PPC.
945 * bug fix: ROOM works again on Windows. (lp#1206456)
946 * bug fix: Streams were flushed even when there was one byte still left in
947 the buffer. (lp#910213)
948 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
949 either NIL or :ERROR. (reported by Jan Moringen)
951 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
952 * enhancement: ASDF has been updated to 3.0.2.
953 * optimization: stack frames are packed more efficiently on x86oids, which
954 ought to reduce the frequency of Methuselahn conservative references (it
955 certainly helps with gc.impure.lisp / BUG-936304 on x86).
956 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
957 recognized in modular arithmetic contexts, and compile to native negate,
958 rather than going through bignums only to keep the low bits.
959 * bug fix: Compiling potential modularic arithmetic forms does not cause type
960 errors when some integer types lack lower or upper bounds. (lp#1199127)
961 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
962 bitwidth before being used in a non-modular context. (lp#1199428)
963 * bug fix: Multiple catch/unwind blocks in a single function are now
964 allocated in the right stack order on win32. (lp#1072739)
966 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
967 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
968 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
969 * enhancement: disassemble now annotates some previously missing static
970 functions, like LENGTH.
971 * enhancement: clean.sh now also cleans doc/internals.
972 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
973 print a symbol with a package prefix.
974 * enhancement: The debugger and backtracing are more robust against buggy
975 PRINT-OBJECT methods.
976 * optimization: calls to static functions on x86-64 use less instructions.
977 * optimization: compute encode-universal-time at compile time when possible.
978 * optimization: when referencing internal functions as #'x, don't go through
979 an indirect fdefn structure.
980 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
981 * optimization: (mod fixnum) type-checks are performed using one unsigned
982 comparison, instead of two.
983 * optimization: enable more modular arithmetic transforms in the presence of
985 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
986 when the result is known to be negative.
987 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
988 * optimization: comparisons between rationals and constant floats or between
989 integers and constant ratios are now converted to rationals/integers at
991 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
992 * bug fix: problems with NCONC type derivation (reported by Jerry James).
993 * bug fix: EXPT type derivation no longer constructs bogus floating-point
994 types. (reported by Vsevolod Dyomkin)
995 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
996 addrinfo. (lp#1187041, patch by Jerry James)
997 * bug fix: uninitialized type-error conditions can now be printed.
999 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
1000 listening, allowing several tests to run in parallel.
1001 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
1002 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
1004 * bug fix: Specialised SIMD-PACK types can be negated.
1005 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
1006 reported by Eric Marsden)
1007 * bug fix: FP return values from foreign calls are always rounded to single
1008 or double float precision on x87.
1009 * bug fix: Known-safe vector access on x86oids should not fail spuriously
1010 when the index is of the form (+ x constant-positive-integer).
1011 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
1012 * bug fix: backtrace printer no longer tries to create very large lists when
1013 the arg-count register is clobberred by other code. (lp#1192929)
1014 * bug fix: x86 should never signal an FP exception while boxing an FP value,
1015 a situation that lands us into ldb.
1017 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
1018 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
1019 ROOM, plus a few SB-INTROSPECT functions) has been completely
1020 rewritten; it may now exhibit different bugs than before.
1021 * new feature: minimal runtime/compiler intrastructure support for SSE
1022 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
1023 feature :sb-simd-pack. This should enable intrinsics extensions as
1024 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
1025 for maintaining a branch for so long.
1026 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
1027 the working directory of the spawned process.
1028 (lp#791800) (patch by Matthias Benkard)
1029 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
1030 stack-allocated on PPC.
1031 * enhancement: "fixed objects" can now be stack-allocated on PPC.
1032 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
1033 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
1034 also returns VOPs which do not translate any functions, and finds
1035 defoptimizer types ir2convert and stack-allocate-result.
1036 * enhancement: better type derivation for APPEND, NCONC, LIST.
1038 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
1039 heap in a manner similar to the GC rather than its previous ad-hoc
1040 scheme, and is therefore no less and possibly more accurate.
1041 * fixes and enhancements related to Unicode:
1042 ** the character database information has been updated to Unicode 6.2;
1043 ** support for canonical and compatibility decomposition of characters has
1044 been added, along with support for primary composition;
1045 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
1046 NFKD) has been included;
1047 ** querying the character database for code points not defined by Unicode
1048 gives less wrong answers (lp#1178038, reported by Ken Harris)
1049 * enhancement: print intermediate evaluation results for some ASSERTed
1050 expressions. (lp#789497) (patch by Alexandra Barchunova)
1051 * enhancement: x86-64 disassemblies are annotated with unboxed constant
1052 values when there are references to (RIP-relative) unboxed constants.
1053 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
1054 of quadratically with the size of the input in the worst case.
1056 * bug fix: handle errors when initializing *default-pathname-defaults*,
1057 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
1058 decoding errors, or directories being deleted.
1059 * bug fix: Loading a core with a discontiguous dynamic space now correctly
1060 computes the amount of dynamic space used.
1061 * bug fix: disassembler missing ",8" on SHLD
1062 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
1063 that provide an "invalid" stack frame link for the signal handler
1064 itself now use the saved-fp-and-pc mechanism to pick up from the stack
1065 frame in the interrupt (signal) context. This is known to affect
1066 threaded FreeBSD/x86-64.
1067 * bug fix: some LOOP statements couldn't be compiled.
1069 * bug fix: sb-sequence:dosequence works on literal vectors.
1070 * bug fix: errors in generic arithmetic show the assembly routine's
1071 caller on x86 and x86-64. (lp#800343)
1072 * bug fix: Compile-time type errors should never result in COMPILE-FILE
1073 failure. (lp#943953)
1074 * bug fix: Known bad local calls do not cause strange failures when
1075 emitting or dumping code. (lp#504121)
1076 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
1077 codegen errors: type checks are inserted as necessary. (lp#1177703)
1078 * bug fix: Unsigned modular arithmetic is correctly converted into signed
1079 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
1080 * bug fix: a combination of inlined local function with &optional and
1081 recursion no longer causes undescriptive compiler errors. (lp#1180992)
1082 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
1083 when testing for non-zero-ness.
1084 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
1086 * bug fix: Type mismatch for the value of conditional expressions are
1087 correctly reported when detected at compile-time, instead of complaining
1088 about a constant NIL (similar for non-EQ-comparable catch tags).
1089 * bug fix: Referring to INLINE global functions as values should not result
1090 in a compilation failure. (lp#1035721)
1091 * optimization: faster ISQRT on fixnums and small bignums
1092 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
1093 * optimization: On x86-64, the number of multi-byte NOP instructions used
1094 for code alignment is now always minimal.
1095 * optimization: On 64-bit targets, the compiler generates much faster
1096 code for type checks for types known at compile time that are smaller
1097 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
1098 their COMPLEX variants.
1099 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
1100 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
1101 * optimization: ROOM no longer conses so egregiously on non-x86oid
1103 * optimization: associative bitwise operations reassociate patterns like
1104 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
1106 * optimization: quasiquote expressions now perform more constant folding,
1107 instead of consing equal lists at runtime. (lp#1026439)
1108 * optimization: local call analysis of inlined higher-order function
1109 should converge more quickly, resulting in better code for complex
1111 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
1112 integer constants are handled more cleverly, especially when they
1113 can be represented as sign-extended (signed-byte 32). (Based on a
1114 patch by Douglas Katzman)
1115 * optimization: IF/IF conversion should reliably result in sane code
1116 when (some of) the results of the inner IF are always false or
1118 * optimization: On x86oids, variable right shifts of machine words are
1119 compiled into straight SAR/SHR, instead of going through the generic
1122 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
1123 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
1125 * bug fix: :allocation slot option works for condition slots
1127 * bug fix: redefining conditions does not lead to multiple evaluations of
1128 hairy slot initfunctions anymore (lp#1164969)
1129 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
1131 * bug fix: function constants now work as initforms and default initarg
1132 values of conditions (lp#539517)
1133 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
1134 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
1135 * bug fix: no more bogus ## references when pretty printing backquoted
1136 forms with non-trivial structure sharing. (lp#1161218)
1137 * bug fix: Don't signal an error on (setf (documentation nil 'function)
1138 "doc"). Signal a style-warning instead when trying to set documentation
1139 of NIL for all other documentation types. (Reported by Zach
1140 Beane; regression since 2e52fa05.)
1141 * bug fix: modular arithmetic involving large constants and conditionals
1142 should no longer result in spurious dead code elimination. (Reported by
1144 * bug fix: our mach exception handler can seemingly called very early in
1145 the program execution process on OS X 10.8.0. Try and handle that case
1146 robustly, without potentially leaking mach ports too much.
1147 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
1149 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
1150 * enhancement: the continuable error when defknown-ing over extant
1151 fndb entries can be ignored by passing :overwrite-fndb-silently t
1152 as a keyword argument to sb-c:defknown (after attributes). Useful
1153 to allow defknown to be re-loaded. Use with :allow-other-keys t
1154 for backward compatibility.
1155 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
1157 * bug fix: Prevent a make-array transform from modifying source forms
1158 causing problems for inlined code. Thanks to Bart Botta.
1159 (regression since 1.0.42.11-bis)
1160 * bug fix: clear-output calls the correct gray stream routine,
1161 sb-gray:stream-clear-output. (lp#1153257)
1162 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
1164 * bug fix: Better error messages for package operations (lp#1154776)
1165 * bug fix: delete-package on a nonexistent package should signal a cerror.
1166 (regression since 1.0.37.44).
1167 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
1168 (lp#1154946, lp#1072112)
1169 * bug fix: compiling make-array no longer signals an error when the
1170 element-type is an uknown type, a warning is issued instead.
1171 Thanks to James Kalenius (lp#1156095)
1172 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
1173 produces wrong results for some inputs. (Thanks to Jan Moringen.)
1176 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
1177 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
1179 * new feature: package local nicknames. See manual for details.
1180 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
1181 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
1182 * enhancement: easier to use restarts for resolving name-conflicts
1183 resulting from IMPORT, EXPORT, or USE-PACKAGE.
1184 * enhancement: variant DEFPACKAGE forms now signal a full error with
1185 restarts provided for resolving the situation. (lp#891351)
1186 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
1187 DEFPACKAGE forms can now signal a full error with restarts provided for
1188 resolving the situation. See manual for details. (lp#891351)
1189 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
1190 (Thanks to Anton Kovalenko.) (lp#1102748)
1191 * enhancement: backtrace improvements
1192 ** secondary CLOS dispatch functions have better debug names (lp#503081)
1193 ** easier to read method names in backtraces. See
1194 SB-DEBUG:*METHOD-FRAME-STYLE*.
1195 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
1196 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
1197 SB-DEBUG:BACKTRACE-AS-LIST.
1198 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
1199 information is available in less intrusive form as frame annotations.
1200 * enhancement: SB-POSIX now provides MAP-ANON.
1201 * enhancement: test-suite results are colorized, failures in red, unexpected
1202 success in green. Works on Windows and on terminals with ANSI escape code
1203 support. Can be disabled with --no-color.
1204 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
1205 (thanks to James M. Lawrence)
1206 * bug fix: no more unused variable style warnings from RESTART-CASE
1207 macroexpansion (lp#1113859)
1208 * bug fix: no more unused variable style warnings when loading
1209 sb-bsd-sockets.asd (lp#1114681)
1210 * bug fix: deleting a package removes it from implementation-package
1211 lists of other packages.
1212 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
1213 This does not fix the occasional "interrupt already pending" issue, though.
1214 * bug fix: (setf (documentation 'x 'function)) and
1215 (setf (documentation #'x t)) set documentation in different places.
1216 (regression since 1.0.43.63)
1217 * bug fix: build on newer glibc. (lp#1095036)
1219 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
1220 * optimization: LOOP expressions using "of-type character" have slightly
1221 more efficient expansions.
1222 * bug fix: very long (or infinite) constant lists in DOLIST do not result
1223 in very long compile times or heap exhaustion anymore. (lp#1095488)
1224 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
1225 * bug fix: adjust-array ignored :initial-element for simple-vectors.
1227 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
1228 longer cause infinite loops (on circular data) or violate eqlity
1229 constraints. (lp#1099708)
1230 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
1232 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
1233 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
1235 * enhancement: support for C-c to interrupt the foreground thread
1236 on Windows. (Thanks to Anton Kovalenko.)
1237 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
1238 * enhancement: Safepoint builds on POSIX platforms can now optionally be
1239 built without pseudo-atomic sequences and their run-time overhead.
1240 * enhancement: Threads created outside of Lisp can enter Lisp through
1241 alien callbacks and appear as Lisp threads for the duration of that
1242 function invocation. On safepoint builds only.
1243 * enhancement: Miscellaneous improvements to namestrings and underlying
1244 calls to OS functions for file system access on Windows. (Thanks to
1246 * enhancement: The MSI installer support for Windows now uses Windows
1247 Installer XML at least version 3.5 and includes various usability
1248 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
1249 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
1250 on Windows. (Thanks to Anton Kovalenko.)
1251 * enhancement: The Windows backend now supports the x86-64 platform.
1252 (Thanks to Anton Kovalenko.)
1253 * bug fix: fasls are now once again directly executable (on platforms
1254 supporting shebang lines, with a suitably-installed sbcl).
1255 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
1256 * bug fix: Fix CAS access to slots of direct instances of structure classes
1257 in the presence of subclasses sharing the same conc-name.
1258 * bug fix: Logical pathname namestrings on Windows have been changed to
1259 be lower-case, to minimize differences between POSIX and Windows.
1261 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
1262 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
1263 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
1264 (NT 5.0) is no longer being maintained.
1265 * notice: Starting with this version, SBCL on Windows no longer supports
1266 building with disabled thread support.
1267 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
1268 * enhancement: New feature sb-dynamic-core allows the runtime to be
1269 rebuilt or relocated without requiring changes to the core file on
1270 all linkage table platforms. Required on Windows. (Thanks to Anton
1272 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
1273 * enhancement: I/O on Windows unnamed pipes is interruptible
1274 asynchronously using interrupt-thread, timers when running on Windows NT
1275 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
1277 * enhancement: Support for the experimental safepoint-based stop-the-world
1278 protocol on the PowerPC platform.
1279 * bug fix: Non-blocking reads from the Windows console were not necessarily
1280 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
1281 * bug fix: stability of threads on Windows has been improved upon through
1282 an updated stop-the-world protocol (thanks to Anton Kovalenko).
1284 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
1285 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
1286 (COMPILE and COMPILE-FILE still do.)
1287 * optimization: the SPARC backend now supports the precise generational
1288 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
1289 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
1290 * enhancement: add experimental support for the SB-THREAD feature and the
1291 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
1292 Threads are enabled by default, and this version of SBCL is considered
1293 to be the last and final release to officially support building with
1295 * optimization: The compiler no longer rotates loops in some cases where
1296 this transformation actually lead to worse code being generated.
1297 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
1298 symbol-macros by lexical bindings.
1299 * bug fix: stack allocation was prevented by high DEBUG declaration in
1301 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
1302 (thanks to SANO Masatoshi)
1303 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
1304 :JUNK-ALLOWED was true.
1305 * bug fix: type derivation inferred overly conservative types for
1306 unions of array types. (lp#1050768)
1308 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
1309 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
1310 source annotation of DISASSEMBLE output. Defaults to T.
1311 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
1312 WAIT-P argument added to WITH-RECURSIVE-LOCK.
1313 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
1315 * enhancement: Optional features (not enabled by default) allow the
1316 use of signals for inter-thread synchronization to be reduced on certain
1317 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
1318 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
1319 to test these experimental features. Known remaining bugs include minor
1320 thread safety issues, less timely freeing of memory by GC, and certain
1321 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
1322 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
1323 comparisons, particularly on almost-sorted inputs.
1324 * bug fix: Reading floats with large exponents no longer takes too much time
1325 before reporting that the exponent is too large.
1326 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
1327 correctly when the received datagram is larger than the provided buffer.
1328 (lp#1023438, thanks to Robert Uhl)
1329 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
1330 a SYMBOL-VALUE form with a constant symbol argument.
1331 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
1332 into a DEFCAS defined place was used as the place.
1333 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
1334 for from bit-vectors.
1335 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
1336 lead to internal errors or crashes (lp#1058799).
1337 * documentation: a section on random number generation has been added to the
1340 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
1341 * enhancement: implicit generic function warnings now specify the package
1342 in which the new generic function is being created.
1343 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
1344 updates of CAS-able places (similar to Clojure's swap!).
1345 * enhancement: run-program no longer decodes and re-encodes environment when
1346 :environment argument is not provided. (lp#985904)
1347 * enhancement: errors during compiler-macro expansion no longer cause
1348 runtime errors, only a compile-time warning, otherwise behaving as if
1349 the compiler macro had declined to expand.
1350 * optimization: On x86-64, code alignment of block headers is done with
1351 multi-byte NOPs now instead of repetitions of the single-byte NOP.
1352 * optimization: MAP-INTO is substantially faster when the target sequence is
1353 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
1354 thanks to James M. Lawrence)
1355 * optimization: the compiler no longer heap-conses to check exits in cases
1356 where the exit function is dynamic extent, or when it can prove the exit
1357 function cannot escape. (lp#1002534)
1358 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
1359 element type, and vectors that aren't SIMPLE-ARRAYs.
1360 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
1361 speed (around 1/3 the time in some cases), and a little better in terms of
1362 comparison calls. (Thanks to Takeru Ohta)
1363 * bug fix: On SPARC, a limitation on the number of code constants emittable
1364 by the compiler has been lifted, allowing certain long functions to
1365 compiled and assembled which had previously been unsupported; fixes
1366 cl-bench on this ISA (lp#1008996).
1367 * bug fix: potential for infinite recursion during compilation of CLOS slot
1368 typechecks when dependency graph had loops. (lp#1001799)
1369 * bug fix: error forms reported with some program-errors were not escaped
1371 * bug fix: functions from EVAL are now on more equal footing with functions
1372 from COMPILE. (lp#1000783, lp#851170, lp#922408)
1373 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
1374 objects as its :METHOD-COMBINATION argument, not just lists designating
1375 method combinations. (lp#936513)
1376 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
1378 * bug fix: restore build on solaris/sparc. (lp#1008506)
1379 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
1380 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
1381 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
1382 as keyword arguments no longer accidentally match unevaluated symbols
1384 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
1385 parameter was zero, now it signals an error. (lp#905817, fixed since
1387 * bug fix: run-program with :pty t no longer makes the pty as the process's
1388 controling terminal.
1389 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
1392 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
1393 * RANDOM enhancements and bug fixes:
1394 ** bug fix: the range and distribution of random integers could be
1395 catastrophically wrong when the compiler derived the type of its
1396 argument as a disjoint set of small integers.
1397 ** bug fix: the distribution of random integers is now completely
1398 uniform even when the specified limit is not a power of two.
1399 (Previously some values could be about 0.1 % more probable than
1400 others in the worst case.) (lp#309467)
1401 ** RANDOM on large integer arguments is generally faster and conses
1402 less than before; this is visible for fixnums above a length of
1403 about 24 bits, but extremely so for bignums: the old implementation
1404 used time and space quadratical in the size of the argument there,
1405 the new one is linear.
1406 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
1407 main entry point, SB-EXT:QUIT is deprecated.
1408 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
1409 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
1410 * enhancement: FASL loading no longer grabs the world-lock.
1411 * enhancement: GENCGC reclaims space more aggressively when objects being
1412 allocated are a large fraction of the total available heap space.
1414 * enhancement: backtraces show the correct number of arguments for frames
1415 called with too many arguments.
1416 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
1418 * enhancement: ASDF has been updated 2.21.
1419 * optimization: fewer uses of full calls to signed modular functions.
1421 * optimization: typechecking alien values is typically 5 x faster.
1422 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
1424 * bug fix: file compilation performance issues when dumping subtypes
1425 of CHARACTER (lp#994487)
1426 * bug fix: fixed disassembly of some SSE instructions on x86-64.
1427 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
1428 OPEN. (lp#969352, thanks to Kambiz Darabi)
1429 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
1431 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
1432 classoid even if X was not the proper name of the class. (lp#941102)
1433 * bug fix: declaration leakage between lexical environments due to careless
1434 use of NCONC in MAKE-LEXENV. (lp#924276)
1435 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
1436 *default-pathname-defaults* contains NAME or TYPE components.
1437 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
1438 from CL package, e.g. (loop . 10).
1439 * bug fix: run-program with existent or non-existent files for :output or
1440 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
1441 returns NIL instead of signalling an obscure error.
1442 * bug fix: fix miscompilation of some logand forms with large constant
1443 arguments. (lp#974406)
1444 * bug fix: account for funcallable-instance objects properly in ROOM.
1445 * bug fix: incorrect octets reported for c-string decoding errors.
1447 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
1449 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
1450 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
1451 allowing faster release of memory back to the OS. (lp#991293)
1452 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
1453 existing deadline for the dynamic scope of its body.
1454 * bug fix: compiler-internal interval arithmetic needed to be more
1455 conservative about open intervals when operated on by monotonic but not
1456 strictly-monotonic functions. (lp#975528)
1457 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
1458 it's also slightly faster. (lp#998926)
1459 * bug fix: better error messages for malformed declarations.
1461 * bug fix: define-condition didn't return the name of the defined condition.
1463 ** improved docstrings: REPLACE (lp#965592)
1465 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
1466 * bug fix: fix copy-structure. When copying from stack to heap, garbage
1467 could end up in the heap making GC unhappy.
1468 (Thanks to James Knight, lp#911027)
1470 ** SBCL can now be built using Clang.
1471 ** ASDF has been updated 2.20.
1472 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
1473 * bug fix: don't complain about a too-hairy lexical environment for inlining
1474 when the function has never been requested for inlining. (lp#963530)
1476 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
1477 * enhancements to building SBCL using make.sh:
1478 ** --fancy can be specified to enable all supported feature enhancements.
1479 ** --with-<feature> and --without-<feature> can be used to specify
1480 which features to build with.
1481 ** --arch option can be used to specify the architecture to build for.
1482 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
1483 full-blows cross-compilation.)
1484 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
1485 which allows specifying name of the default interning package for the
1487 * enhancement: when *READ-EVAL* is true, arrays with element type other than
1488 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
1489 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
1490 null alien when malloc() fails. (lp#891268)
1491 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
1492 conditions can be conveniently accessed through function with the same
1493 name, analogously to CONTINUE.
1494 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
1495 from the printer by type, causing an error marker to be printed instead.
1496 (Thanks to Attila Lendvai)
1497 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
1498 generally behave better when errors occur during printing.
1499 * enhancement: the test runner now takes a --report-skipped-tests argument
1500 to report the individual tests skipped as well as the number of skipped
1502 * enhancement: undefined functions now appear in backtraces as ("undefined
1503 function") instead of ("bogus stack frame") on x86oids.
1504 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
1505 deadlock errors are reported in an easier-to-decipher manner.
1506 * enhancement: DESCRIBE on type designators reports the expansion in more
1508 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
1509 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
1510 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
1511 * enhancement: better disassembly of segment-prefixes on x86 and other
1512 instruction prefixes (e.g. LOCK) on x86 and x86-64.
1513 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
1514 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
1515 * optimization: SUBSEQ on vectors of unknown element type is substantially
1517 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
1518 be stack-allocated. (lp#902351)
1519 * optimization: the compiler is smarter about representation selection for
1520 floating point constants used in full calls.
1521 * optimization: the compiler no longer refuses to coerce large fixnums to
1522 single floats inline, except on x86 where this limitation is still
1524 * optimization: truncation operations on integers with constant divisor
1525 arguments 1 and -1 are optimized away.
1526 * bug fix: deadlock detection could report the same deadlock twice, for
1527 two different threads. Now a single deadlock is reported exactly once.
1528 * bug fix: interval-arithmetic division during type derivation did not
1529 account for signed zeros.
1530 * bug fix: compiler error when typechecking a call to a function with
1531 non-constant keyword arguments.
1532 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
1533 * bug fix: condition slot accessors no longer cause undefined function
1534 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
1535 form that defines them. (lp#896379)
1536 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
1537 by ANSI. (lp#894202)
1538 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
1539 bogusly report NIL, T.
1540 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
1541 required arguments ignored and performed assignments to others.
1543 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
1544 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
1545 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
1546 * bug fix: redefining a function whose previous definition contained an
1547 unknown type no longer causes a style-warning. (lp#806243)
1548 * bug fix: undefined functions now appear in backtraces as ("undefined
1549 function") instead of ("bogus stack frame") on non-x86oids.
1550 * bug fix: backtraces are no longer cut off at ("undefined function") when
1551 called under certain circumstances (involving a caller-allocated stack
1553 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
1554 systems. (regression since 1.0.53)
1555 * bug fix: GC deadlocks from dladdr() on certain platforms.
1556 * bug fix: broken standard streams no longer automatically cause recursive
1557 errors on debugger entry.
1558 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
1559 (regression since 1.0.53)
1560 * bug fix: attempts to stack allocate a required argument to a function with
1561 an external entry point caused compiler-errors.
1562 * bug fix: compiler notes for failed stack allocation for a function argument
1563 no longer claim to be unable to stack allocate the function.
1564 * bug fix: COERCE now signals a type-error on several coercions to
1565 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
1566 * bug fix: missing failure-to-stack-allocate compiler notes for some
1567 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
1568 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
1570 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
1572 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
1573 * minor incompatible changes:
1574 ** RENAME-FILE on a symbolic links used to rename the linked-to file
1575 instead of the link.
1576 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
1577 directory, but now signal an error instead. Use TRUENAME to resolve the
1578 pathname if you wish to delete the linked directory, and DELETE-FILE if
1579 you wish to delete the
1580 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
1581 symbols associated with it will trigger a compile-time warning.
1582 * thread-related enhancements:
1583 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
1584 Many thanks to generous donors!)
1585 ** Threading is now more reliable on non-Linux platforms. We still don't
1586 consider threads on non-Linux platforms good enough to enable them by
1587 default, but they're in a clearly better shape now.
1588 ** Deadlines supported now on all platforms.
1589 ** All blocking functions in the threading API now have a :TIMEOUT
1591 ** Semaphore notification objects have been added to SB-THREAD.
1592 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
1593 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
1594 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1595 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
1596 using an API anologous to defining new SETFable places.
1597 * GC-related enhancements and bug fixes:
1598 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
1599 and Gb suffixes. Default is megabytes as before.
1600 ** on GENCGC targets, the default dynamic space size is now 512Mb for
1601 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
1602 exception, defaulting to mere 444Mb to fit under default ulimits.) The
1603 new defaults are in place to prevent hitting swap on low-end systems.
1604 Use build-time option --dynamic-space-size to build an SBCL with
1605 another default, or the runtime option to adjust the size at startup: a
1606 good size is at most equal to the amount of physical memory the system
1608 ** on GENCGC targets, nursery and generation sizes now default to 5% of
1610 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
1611 refuses to create SIMPLE-FUN objects.
1612 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
1614 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
1615 validation of pointer objects as GENCGC does, instead of a
1616 comparatively weak bounds-check against the heap spaces.
1617 * SB-BSD-SOCKETS bug fixes:
1618 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
1619 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
1620 systems with getaddrinfo().
1621 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
1622 safe outside systems with getaddrinfo().
1623 * enhancement: ASDF has been updated 2.019.
1624 * enhancement: special-case TCO prevention for functions which never return
1625 extended to untrusted types, keeping one more frame's worth of debug
1626 information around in many cases.
1627 * enhancement: debug-names of anonymous and local function are more
1628 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
1629 * enhancement: on win32, ABS of complex floats guards better against
1630 overflows. (lp#888410)
1631 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
1632 process exiting with code 1. (lp#676987)
1633 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
1634 the system where on the filesystem the SBCL sources themselves are
1635 located. (Thanks to Zach Beane)
1636 * enhancement: the compiler is now able to derive tighter bounds for
1637 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
1638 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
1639 correctly, even on wide-fixnum builds. (lp#887220)
1640 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
1641 resolved to directories.
1642 * bug fix: type mismatch when assigning to lexical variables no longer
1643 result in fasl-dumping internal type objects. (lp#890750)
1644 * bug fix: type mismatch on (SETF AREF) and function return values no
1645 longer result in fasl-dumping internal type objects.
1646 * bug fix: With several combinations of argument types, for example (EXPT
1647 <integer> <(complex double)>), EXPT now uses double-precision throughout
1648 instead of partially calculating only to single-precision. (lp#741564;
1649 thanks to Lutz Euler)
1650 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
1651 objects when interrupted by GC on PPC.
1653 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
1654 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
1655 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
1656 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
1657 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
1658 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
1659 targets is now 63 bits (up from 61).
1660 * enhancement: DESCRIBE now reports a lambda-list and source location
1661 for complext setf-expanders.
1662 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
1663 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
1664 of multiple-valued places to be set to NIL, instead of signalling an
1665 error (per a careful reading of CLHS 5.1.2.3).
1666 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
1667 * bug fix: repair crash in x86oid darwin signal handling emulation
1668 when built with certain compilers.
1669 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
1670 rotation arguments on x86-64. (lp#882151)
1671 * bug fix: low-level control flow optimisations could result in bogus
1672 code in functions with tail and non-tail calls to local functions on
1673 x86oids. (lp#883500)
1674 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
1675 to emit literal characters > (code-char 4095), for comparisons with
1676 constant characters.
1677 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
1678 on 64 bit platforms. (lp#881445)
1679 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
1680 delete the wrong file when using relative pathnames. (lp#882877)
1681 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
1682 sequences and :KEY NIL.
1684 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
1685 * enhancement: ASDF has been updated to version 2.017.
1686 * enhancement: the --core command line option now accepts binaries with
1688 * enhancement: when built with :sb-core-compression, core files (regular
1689 or executable) can be compressed with zlib. Use the :COMPRESSION
1690 argument to SAVE-LISP-AND-DIE to specify a compression level.
1691 * enhancement: --[no-]merge-core-pages determines whether the runtime
1692 hints the operating system that identical core pages between SBCL
1693 processes should share the same physical memory. Default is to only
1694 enable this for compressed cores.
1695 * optimization: SLEEP no longer conses.
1696 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
1697 or bit-vectors when using the standard pretty-print dispatch table.
1698 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
1700 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
1701 AREF, CHAR, etc. (lp#826971)
1702 * bug fix: compiler-errors causes by integer arguments with composed of
1703 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
1704 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
1705 expressions. (lp#770184)
1706 * bug fix: complex single float literals are correctly aligned when used
1707 as arguments of arithmetic operators.
1708 * bug fix: on 32-bit platforms, rounding of double floats larger than a
1709 fixnum is correct. (reported by Peter Keller)
1710 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
1711 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
1713 * bug fix: redefining classes such that slots with custom allocation are
1714 added or removed works again.
1716 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
1717 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
1718 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
1719 MAKE-SOCKET-STREAM if using SERVE-EVENT.
1720 * enhancement: added support for socket keepalive timeout intervals
1721 and probe counts on Linux.
1722 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
1723 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
1724 * enhancement: added new toplevel options --quit and --non-interactive
1726 * enhancement: the Windows port of SBCL now builds and runs on Wine
1727 (thanks to Anton Kovalenko).
1728 * enhancement: more, and more correct, SSE instruction definitions on
1729 x86-64 (thanks to Alexander Gavrilov).
1730 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
1731 to help the processor execute spin loops, when applicable. Currently
1732 implemented for x86 and x86-64.
1733 * optimization: unsigned integer divisions by a constant are implemented
1734 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
1735 * optimization: improved type-derivation for LOAD-TIME-VALUE.
1736 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
1737 instructions. (lp#814688)
1738 * bug fix: COERCE to unfinalized extended sequence classes now works.
1739 (reported by Jan Moringen; lp#815155)
1740 * bug fix: a compiler error during typecheck generation, reported by Eric
1741 Marsden. (lp#816564)
1742 * bug fix: obsolete instance protocol fires when shared slots are added
1744 * bug fix: fixed-format floating point printing with scaling factors.
1746 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
1747 backtraces. (lp#818460)
1748 * bug fix: better backtraces for interrupted syscall frames on x86.
1750 * bug fix: SSE comparison instructions can be disassembled even when one
1751 operand is in memory. (lp#814702)
1752 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
1753 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
1754 type information associated with the VALUES form.
1755 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
1757 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
1758 first write (lp#561642).
1759 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
1760 * bug fix: bound propagation involving conversion of large bignums to
1761 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
1763 * bug fix: &REST to &MORE conversion still works in unsafe call to known
1764 functions; reported by Lutz Euler (lp#826459).
1765 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
1768 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
1769 * enhancement: errors from FD handlers now provide a restart to remove
1770 the offending handler.
1771 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
1773 * enhancement: location of user or system initialization file can now easily
1774 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
1775 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
1776 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
1777 the thunk, as a keyword argument, :arguments.
1778 * enhancement: constraint propagation is simplified (and sped up) when
1779 COMPILATION-SPEED > SPEED.
1780 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
1781 * enhancement: debugger understands &MORE arguments better.
1782 * optimization: extracting bits of a single-float on x86-64 has been
1783 optimized. (lp#555201)
1784 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
1785 when (> SPEED SPACE).
1786 * optimization: local call trampolines (x86 and x86-64) are emitted
1788 * optimization: implicit value cells for dynamic-extent closed-over bindings
1789 on x86 and x86-64 can hold unboxed values as well.
1790 * meta-optimization: improved compilation speed, especially for large
1791 functions. (lp#792363 and lp#394206)
1792 * bug fix: bound derivation for floating point operations is now more
1793 careful about rounding possibly closing open bounds. (lp#793771)
1794 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
1795 backwards incompatible change in 1.0.48.27)
1796 * bug fix: occasional debugger errors in when a type-error occured in a
1797 function with dynamic-extent &rest list.
1798 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
1799 boa-construtors can be used to initialized structure slots.
1800 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
1801 (lp#795705, regression)
1802 * bug fix: DIRECTORY works better on logical pathnames.
1803 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
1804 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
1805 * bug fix: the compiler no longer constant-folds NaNs in
1806 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
1807 * bug fix: FORMAT now handles floating point rounding correct, eg.
1808 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
1810 * bug fix: style warning during lambda-list introspection of generic
1811 functions with both optional and key argments.
1812 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
1813 folding. (lp#729765)
1814 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
1817 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
1818 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
1819 interrupts for its body.
1820 * enhancement: source locations are now available for files loaded as
1821 source, compile-time-too evaluation, and initialization files.
1822 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
1823 virtual source-file information, eg. overriding input-file of COMPILE-FILE
1824 when a temporary file is used for compilation.
1825 * enhancement: ASDF has been updated to version 2.015.3.
1826 * enhancement: backtraces involving frames from the default evaluator are
1828 * enhancement: RUN-PROGRAM works with user-defined binary input and output
1830 * enhancement: more informative compile-time warnings and runtime errors for
1831 type-errors detected at compile-time.
1832 * enhancement: deadlock detection for mutexes and spinlocks.
1833 * enhancement: dynamic-extent for &rest lists stack allocate only their
1834 spines, not their argumets. While portable code should not rely on this,
1835 particularly in combination with inlining, it should make dynamic-extent
1836 easier to use safely.
1837 * enhancement: SB-POSIX improvements:
1838 ** WNOHANG and WUNTRACED are exported.
1839 ** SYSCALL-ERROR now also provides the name of the failing system call.
1840 * enhancement: --script improvements:
1841 ** errors on standard input, output, and error streams are handled and
1842 cause scripts to exit silently, making them easier to use in shell
1844 ** backtraces from scripts now go to standard error instead of the
1845 terminal even if one is available.
1846 ** --script can be an argument, causing the script to be loaded from
1848 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
1849 strings to foreign memory.
1850 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
1851 a file, making it easier to understand heap dynamics.
1852 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
1853 allows the compiler to automatically elide rest-list allocation so long as
1854 the call sites are in functions that the compiler knows cannot escape.
1856 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
1857 especially in safe code when none of the required arguments have changed
1859 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
1860 uninterruptible, as well as blocking reads from socket streams created
1861 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
1862 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
1863 from the to-char if the from-char is not a dispatch-macro character.
1864 * bug fix: references to undefined variables in function calls that are
1865 optimized away now signal a runtime error. (lp#722734)
1866 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
1867 types from a function defined in the same file. (regression from
1869 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
1871 * bug fix: spurious errors during QUIT when standard streams were closed.
1873 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
1874 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
1875 years, is now no longer supported.
1876 * enhancement: read() and write() have been added to SB-POSIX.
1877 * enhancement: types of DEFSTRUCT constructors are proclaimed more
1878 accurately, allowing better typechecking of call-sites.
1879 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
1880 are no longer caught. (reverted to pre 1.0.34 behaviour)
1881 * optimization: slightly faster ISQRT. (lp#713343)
1882 * bug fix: better support for Solaris /bin/sh in sh-based tests.
1883 * bug fix: TRACE behaves better when attempting to trace undefined
1884 functions. (lp#740717)
1885 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
1886 to (FUNCALL #'(LAMBDA ...) ...).
1887 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
1888 a compile-time error. (lp#720382)
1889 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
1891 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
1892 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
1893 optimization. (regression from 1.0.45.18/1.0.46.15)
1894 * bug fix: package locks did not protects against compile-time side-effects
1895 of DEFUN. (lp#675584)
1896 * bug fix: --dynamic-space-size argument is validated more carefully.
1898 * bug fix: memory fault from printing a malformed simple-condition.
1900 * bug fix: redefining classes so that slot-definition classes change now
1901 engages the obsolete instance protocol. (lp#766271)
1902 * bug fix: constant improper lists could break source coverage recording.
1904 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
1905 could exhaust stack.
1907 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
1908 * bug fix: fix mach port rights leaks in mach exception handling code on
1909 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
1911 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
1912 * enhancement: redefinition warnings for macros from different files. (lp#434657)
1913 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
1914 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
1915 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
1916 processed using EVAL -- now the appropriate toplevel form is reported instead.
1917 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
1918 declarations. (lp#726331)
1919 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
1920 that NIL/NULL is excluded from the type.
1921 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
1923 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
1924 and its compatriots.
1925 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
1926 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
1927 stack-allocated values out of their dynamic-extent. (lp#310175)
1928 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
1929 x86-64 builds caused a type-error.
1930 * bug fix: calling COMPILE with something else than a lambda-expression as the
1931 second argument reports a more sensible error. (lp#718905)
1932 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
1933 are detected. (lp#520607)
1934 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
1936 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
1937 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
1938 methods. (regression from 1.0.45.18)
1939 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
1940 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
1941 * bug fix: several foreign functions accepting string also accepted NIL and
1942 consequently caused a memory fault at 0 now signal a type-error instead.
1944 * bug fix: under rare circumstances, constraint propagation could rewrite a
1945 variable reference to refer to a variable not in scope, causing an error
1946 during physical environment analysis when attempting to close over the
1947 variable. (lp#551227)
1948 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
1950 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
1951 * enhancement: largefile support on Solaris.
1952 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
1953 arguments (lp#710017)
1954 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
1955 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
1957 * optimization: ERROR and CERROR are approximately 5 times faster.
1958 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
1959 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
1960 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
1961 up instance creation in those cases.
1962 * optimization: arithmetic operations with multiple constant arguments in now
1963 have them reduced at compile-time. (lp#676414)
1964 * optimization: determining current character position on string-streams for
1965 pretty-printing was overly slow.
1966 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
1967 lifetime analysis to overwrite closed-over variables (lp#681092).
1968 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
1969 were not handled correctly (lp#713063).
1970 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
1972 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
1973 mistake. (lp#667297).
1974 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
1975 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
1976 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
1977 unintern the wrong symbol with the same name. (lp#693796)
1978 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
1979 making it possible to restore the initial table if it has been messed up.
1982 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
1983 * enhancement: ~/ and ~user/ are treated specially in pathnames.
1984 Refer to documentation for details.
1985 * enhancement: ASDF has been updated to version 2.010.
1986 * optimization: mutated closed-over variables that are only accessed by
1987 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
1988 declared to be DYNAMIC-EXTENT) are stored directly in their containing
1989 stack frame, rather than allocating a VALUE-CELL (lp#586103).
1990 * optimization: UNWIND-PROTECT cleanup functions are now declared
1992 * bug fix: backtracing function with &REST arguments now shows the full
1993 argument list. (lp#310173)
1994 * bug fix: return types for functions with complex lambda-lists are now
1995 derived properly (lp#384892)
1996 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
1997 long string arguments slowed the compiler down to a crawl.
1998 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
1999 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
2000 in the DEFMETHOD body.
2001 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
2002 messages, being instead replaced with the corresponding function name.
2003 * bug fix: don't derive overly complex unions of numeric types for arithmetic
2004 operators. (lp#309448)
2006 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
2007 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
2008 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
2009 * enhancement: ALLOCATION-INFORMATION also provides the page the object
2011 * enhancement: default dynamic-space size can be configured at build-time
2012 without touching source, using the --dynamic-space-size argument to make.sh.
2013 * enhancement: DESCRIBE recognizes symbols naming optimization policy
2014 qualities, and mentions ALWAYS-BOUND declarations.
2015 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
2017 * enhancement: ASDF has been updated to 2.009.
2018 * enhancement: the system detects known type-erros in calls better,
2019 signalling a full warning about violated proclaimed FTYPEs and violations
2020 of derived FTYPEs within the same file, including self-calls.
2021 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
2022 * optimization: constant-folding exploits numeric and character types, in
2023 addition member types.
2024 * optimization: numeric, character and member types that are inhabited by
2025 exactly one value are tested with EQL.
2026 * optimization: more conditional branches are eliminated during IR1.
2027 Branches are simplified before performing if/if-conversion, and simple
2028 equivalent branches (that only read the same constant or variable) are
2030 * improvements to the Windows port:
2031 ** change: canonical unparsing form for pathname namestrings now uses / as
2032 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
2033 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
2034 on Windows. (thanks to Kalyanov Dmitry)
2035 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
2037 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
2038 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
2039 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
2040 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
2042 * bug fix: interrupts arriving during CL:OPEN caused an error.
2043 * bug fix: overeager character buffering could cause input to block
2044 spuriously when reading from a pipe (lp#643686)
2045 * bug fix: more efficient timer expiry should avoid starvation on systems
2046 where number of SIGALRMs per second is restricted. (lp#375515)
2047 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
2048 * bug fix: compile-times no longer scale linearly with the size of
2049 quoted lists in source-code. (lp#654289)
2050 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
2051 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
2052 so badly. (lp#654485)
2053 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
2054 an error for eg. STRUCTURE. (lp#458015)
2055 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
2056 (lp#613871, thanks to Roman Marynchak)
2057 * bug fix: more reliable &REST list type derivation. (lp#655203)
2058 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
2059 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
2060 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
2061 also declared NOTINLINE. (lp#655581)
2062 * bug fix: the compiler could attempt to emit constant left shifts of
2063 greater value than n-word-bits. (lp#309063)
2064 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
2065 type information for the function being set. (lp#659220)
2066 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
2067 containing self-calls were recompiled with a new signature, and failed
2068 to warn when a self-call using the old signature was left in. (lp#655126)
2069 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
2070 :DEFAULT when the default external had character size other than 8 bits.
2072 * bug fix: derived types of functions in the same file were implicitly
2073 trusted, leading to potential heap corruption when those function were
2074 defined incompatibly. (lp#657499)
2075 * bug fix: existing ASDF source registries are ignored when building
2076 contribs (lp#659105)
2077 * bug fix: short-form DEFSETF checks that the second argument is a symbol
2078 (lp#655824, thanks to Roman Marynchak)
2079 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
2080 package-lock violation was detected. (lp#660752)
2081 * bug fix: the system can store different docstrings for a single function
2082 under different names. (lp#661631, regression from 1.0.29.24)
2083 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
2084 properly. (lp#384801)
2085 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
2086 of specified length could confuse the type derivation in unsafe code.
2088 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
2089 fork with multiple Lisp threads running is made on every platform,
2090 not just Darwin. (lp#451111)
2091 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
2092 around when core was saved, which could cause undefined behaviour when the
2094 * bug fix: Allow UNTRACE of functions that are no longer defined
2095 (lp#667657, thanks to Attila Lendvai)
2096 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
2097 compile-time warning (lp#664373, thanks to Stas Boukarev)
2099 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
2100 * incompatible change: FD-STREAMS no longer participate in the serve-event
2101 event-loop by default. (lp#316072)
2102 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
2103 affects streams from CL:OPEN.
2104 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
2105 default, but this is liable to change: applications needing serve-event
2106 for socket streams should explicitly request it using :SERVE-EVENTS T
2108 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
2110 * enhancement: CLOS effective method functions and defclass slot typechecking
2111 function now have debug names for use in backtraces and profiles.
2112 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
2114 * enhancement: symbols are printed using fully qualified names in several
2115 error and warning messages which are often associated with package
2116 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
2117 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
2118 thanks to Andrew Golding)
2119 * bug fix: reading /proc files on Linux works. (lp#425199)
2120 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
2122 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
2123 breaking code that tried to write the value of a printer control variable.
2124 (lp#581564, thanks to Stas Boukarev)
2125 * bug fix: WRITE compiler macro did not handle output stream designators
2126 correctly. (lp#598374, thanks to Stas Boukarev)
2127 * bug fix: better availability of names of foreign functions in backtraces
2128 on Linux. (lp#626962, thanks to Stas Boukarev)
2129 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
2130 lp#627581, thanks to Josh Elsasser and Jim Wise)
2131 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
2132 thanks to Josh Elsasser)
2133 * bug fix: using aliases for builtin classes as defmethod specializers
2134 without adding DEFTYPEs for them works. (lp#618387)
2135 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
2137 * bug fix: legally dynamic-extent lists and vectors used as
2138 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
2139 * bug fix: inline-expansion creating references to dead lambda-variables
2140 (lp#454681, thanks to Alexey Dejneka)
2141 * bug fix: better error message for bogus numerical arguments to RANDOM.
2142 (lp#598986, thanks to Stas Boukarev)
2143 * bug fix: the compiler occasionally inlined references from incompatible
2144 environments occurs. (lp#308951)
2145 * bug fix: the compiler threw an error when trying to compile a local
2146 function (labels or flet) known to take a specialized complex argument.
2147 (not in launchpad, reported by sykopomp in #lispgames)
2148 * bug fix: package-locks failed to protect against compile-time effects of
2149 DEFUN when the symbol previously had a macro definition. (lp#576637)
2150 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
2151 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
2152 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
2153 * bug fix: evaluation in debugger REPL works using the global context when
2154 in frames that do not have sufficient debug information.
2155 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
2157 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
2159 * bug fix: interrupt taking longer than the requested period caused SLEEP
2160 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
2162 changes in sbcl-1.0.42 relative to sbcl-1.0.41
2164 ** Cross-compilation host is now specified to make.sh using
2165 command-line argument --xc-host=<command> instead of a positional
2166 argument. (thanks to Daniel Herring)
2167 ** Install location can be specified to make.sh using command-line
2168 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
2169 * optimization: The default implementation of
2170 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
2171 * enhancement: Explicit memory barrier operations are now available for use
2172 by multithreaded code. See documentation for details.
2173 * enhancement: Experimental support for threading on Linux/PPC.
2174 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
2175 * bug fix: EXPT signals an error if first argument is a zero and second
2176 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
2177 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
2178 (lp#576594, thanks to Roman Marynchak)
2179 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
2180 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
2182 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
2183 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
2184 cached, leading to many fewer expensive calls to
2185 COMPUTE-APPLICABLE-METHODS.
2186 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
2187 CLASS argument, search for and call an appropriate optimized ctor function
2189 * bug fix: WRITE always returns the correct value.
2191 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
2192 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
2193 * bug fix: Name conflicts between symbols passed as arguments to a single
2194 call to IMPORT no longer add multiple symbols with the same name to the
2195 package (detectable via DO-SYMBOLS).
2196 * bug fix: support building without the dlshim on darwin x86 and x86-64
2198 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
2200 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
2201 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
2203 * bug fix: linkage-table entries on PPC now no longer overflow their
2204 space allocation (potentially causing crashes if they are written out
2206 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
2207 platforms, preventing the GC from seeing stale pointers on the control
2208 stack in subsequent GCs (which would, and does, break invariants).
2209 * bug fix: 32-bit unicode external formats now work on big-endian systems.
2210 * bug fix: Literal characters with code points greater than about 32767
2211 now work on PPC UNICODE builds.
2212 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
2213 high order bits are explicitly cleared out. In some contrived situations,
2214 this could lead to wrong results in mixed real/complex float arithmetic.
2215 * bug fix: Fix function/macro redefinition warnings when building with
2216 clisp. (lp#576787, thanks to Josh Elsasser)
2217 * new platform: experimental support for ppc/openbsd (thanks to Josh
2219 * bug fix: Floating-point traps now work on ppc/linux.
2221 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
2222 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
2223 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
2224 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
2225 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
2226 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
2227 SB-THREAD:GRAB-MUTEX.
2228 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
2229 contain additional data structures and tools for concurrent programming;
2230 at the moment it contains a lock-free queue, and a lock-free mailbox
2232 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
2233 GET-MUTEX but takes &key rather than &optional parameters. Also added
2234 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
2236 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
2237 SB-THREAD:WAIT-ON-SEMAPHORE.
2238 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
2240 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
2241 conditions to defer the deadline for forever.
2242 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
2244 * enhancement: errors from NO-APPLICABLE-METHOD and
2245 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
2246 generic function call.
2247 * enhancement: SB-BSD-SOCKET improvements
2248 ** sockets and socket streams now have a more informative printed
2249 representation based on the corresponding SOCKET-NAME and
2251 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
2253 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
2254 CL:CLOSE when appropriate, and no longer disassociates the stream
2255 from the socket if close failed. (lp#543951)
2256 * improvements to the instrumenting profiler
2257 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
2258 ** optimization: counters no longer use locks for the overflow mode.
2259 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
2260 incurred an off-by-one miscount.
2261 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
2262 * enhancement: improved DEFMETHOD pretty-printing.
2263 * enhancement: perform range reduction when arguments are too large for
2264 x87's transcendentals (instead of returning 0). (lp#327192)
2265 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
2266 some of CL-PPCRE's macros. (lp#570079)
2267 * enhancement: our machine code is slightly less hostile to valgrind on
2269 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
2270 to Robert Swindells and Aleksej Saushev)
2271 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
2272 * bug fix: a rare case of startup-time page table corruption.
2273 * bug fix: a semaphore with multiple waiters and some of them unwinding due
2274 to timeouts could be left in an inconsistent state.
2275 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
2276 * bug fix: misoptimization of multiplication by one in
2277 (SB-C::FLOAT-ACCURACY 0) policies.
2278 * bug fix: miscounts in SB-PROFILE.
2279 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
2280 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
2281 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
2282 up itself" (March 2010) for further details.
2283 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
2284 against length of the list if the element is found before the specified
2285 END is reached. (thanks to Alec Berryman, lp#554385)
2286 * bug fix: errors signalled during package graph modification no longer
2287 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
2288 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
2289 :SB-DOC feature. (lp#552564)
2290 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
2291 * bug fix: more robust runtime executable path detection. (lp#375549)
2292 * bug fix: GCD always returns positive values. (lp#413680)
2293 * bug fix: Converting division to multiplication by reciprocal handles
2295 * bug fix: We were too eager in eliding range reduction tests on x87.
2296 The maximal magnitude is 2^63, not 2^64.
2297 * bug fix: Transforms for TRUNCATE don't die when the result is completely
2299 * bug fix: Maybe restore buildability on Alpha.
2300 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
2302 * bug fix: RANDOM-STATE can be printed readably again.
2303 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
2304 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
2305 types) could result in type mismatches during compilation.
2307 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
2308 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
2309 stack frame thrown from.
2310 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
2311 compiler optimization qualities inside dynamic extent of its body.
2312 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
2313 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
2315 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
2316 constraint propgation, allowing better compilation eg. when used to
2317 access structures with WITH-SLOTS. (lp#520366)
2318 * optimization: the compiler is now more aware of the type of the underlying
2319 storage vector for multidimensional simple arrays resulting in better code
2320 for accessing such arrays.
2321 * optimization: passing NIL as the environment argument to TYPEP no longer
2322 inhibits optimizing it. (lp#309788)
2323 * optimization: more efficient register usage when handling single-float
2324 arguments on x86-64. (thanks to Lutz Euler)
2325 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
2326 pre-allocated temporary vectors. (lp#496249)
2327 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
2328 in :INITIAL-CONTENTS. (lp#523612)
2329 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
2330 functions. (lp#524707)
2331 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
2332 WITH-SLOTS usages during compilation.
2333 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
2334 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
2335 all x86oid platforms with :UD2-BREAKPOINTS target feature.
2336 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
2337 instruction (tested on x86oid linux with ud2-breakpoints).
2338 * bug fix: slam.sh now works on win32.
2339 * bug fix: better differences of numeric types. (lp#309124)
2340 * bug fix: arrays declared intersection and union types can have their
2341 upgraded element type derived. (lp#316078)
2342 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
2343 threads started during profiling. (lp#472499)
2344 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
2346 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
2347 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
2348 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
2349 values instead of signaling an error. (lp#309093)
2350 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
2352 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
2353 declarations (lp#497321)
2354 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
2355 and failed to detect circular lists (lp#452008)
2356 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
2358 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
2359 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
2360 due to it, so that handlers can run.
2361 * bug fix: reparsing undefined types if they have become defined since
2362 parsing. (lp#309128)
2363 * bug fix: missing &REST type in a proclamation for a function with both
2364 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
2365 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
2366 expanded calls (lp#542174)
2367 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
2368 than just at toplevel form.
2370 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
2371 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
2372 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
2373 but work on type specifiers.
2374 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
2375 to name a type specifier.
2376 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
2377 specifier is valid where "valid" basically means "would be accepted as
2378 second argument of TYPEP".
2379 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
2380 returns the function's declared, or derived FTYPE.
2381 * new feature: SB-POSIX now supports accessing the d_ino member of
2382 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
2383 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
2384 provide for seeding a RANDOM-STATE object with user-provided data or
2385 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
2386 attempt to initialize the returned state from the operating system's
2387 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
2388 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
2389 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
2390 * bug fix: Fix grammar and style issues for the docstrings of
2391 printer-related variables and functions. (Thanks to mon_key; launchpad
2393 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
2395 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
2396 in a row even though a handler defered the deadline long into the
2398 * bug fix: A deadline handler was run without interrupts enabled for a
2399 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
2400 in infinitely spinning, non-killable threads.
2401 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
2402 before reaching the erring stack frame.
2403 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
2404 real power. (launchpad bug lp#525949)
2405 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
2406 GENCGC platforms. (launchpad bug lp#529014)
2407 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
2408 (launchpad bug lp#525916)
2409 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
2410 (Thanks to Robert Goldman)
2412 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
2413 * optimization: ROUND with a single single-float or double-float argument
2414 is properly inlined when possible.
2415 * optimization: Slightly better code is generated for integer<->float
2416 conversions and for single-float<->double-float conversions on x86-64.
2417 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
2418 code for 32-bit and 64-bit rotations on x86-64.
2419 * bug fix: The install script changes the ownership of directories as well
2420 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
2421 launchpad bug lp#508485)
2422 * bug fix: TRUNCATE with a single single-float or double-float argument is
2423 properly inlined when possible. (launchpad bug lp#489388)
2424 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
2425 no longer causes a compiler error on x86 and ppc.
2426 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
2427 always relative to *READTABLE* rather than the passed argument.
2429 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
2430 * minor incompatible change: threading support is now enabled by default
2432 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
2434 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
2435 are now caught and reported just like errors during macroexpansion.
2436 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
2437 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
2438 * enhancement: ASDF systems can now depends on SB-QUEUE.
2439 * fixes and improvements related to Unicode and external formats:
2440 ** bug fix: error handling and restart usage in the ucs-2 external format
2442 ** there is now an implementation of the ucs-4 external format.
2443 ** the utf-16 and utf-32 external formats are supported.
2444 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
2445 in the environment. setenv() and unsetenv() are also provided. (reported by
2446 Fare Rideau; launchpad bug lp#460455)
2447 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
2448 loading. This ensures sensible errors for .FASL files from other
2449 implementations on case-insensitive filesystems. (reported by Willem
2450 Broekema; launchpad bug lp#489417)
2451 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
2452 Willem Broekema; launchpad bug lp#489698).
2453 * bug fix: some minor code rearrangements to reenable warning-free building
2454 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
2455 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
2457 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
2460 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
2461 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
2462 * improvement: support O_LARGEFILE access to files larger than 2GB on
2463 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
2464 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
2465 definitions for methods specializing on the passed class itself.
2466 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
2467 definitions for methods specializing on the passed class itself, or on
2469 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
2470 about itself during the build (e.g. for M-? in Slime), if this flag is
2471 enabled in customize-target-features.lisp. This will increase the core
2472 size by about 5-6mb, though, so it's mostly interesting to SBCL
2474 * new feature: various GENCGC tuning parameters have been experimentally
2475 documented and exported from SB-EXT. See documentation for details.
2476 * fixes and improvements related to Unicode and external formats:
2477 ** the Unicode character database has been upgraded to the
2478 Unicode 5.2 standard, giving names and properties to a number of new
2479 characters, and providing a few extra characters with case
2481 ** improvement: restarts for providing replacement input/output on coding
2482 errors for fd-stream external formats.
2483 ** improvement: where :<encoding> is a keyword corresponding to an
2484 external format the system supports, it is now possible to specify
2485 (:<encoding> :replacement <character>) as an external format which will
2486 automatically substitute <character> on encoding or decoding errors for
2487 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
2489 ** improvement: the file streams underlying the standard streams (such as
2490 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
2491 which uses the replacement mechanism to handle encoding errors,
2492 preventing various infinite error chains and unrecoverable I/O
2494 ** minor incompatible change: the utf-8 external format now correctly
2495 refuses to encode Lisp characters in the surrogate range (char-codes
2496 between #xd800 and #xdfff).
2497 ** fix a typo preventing conversion of strings into octet vectors
2498 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
2500 ** fix a bug in the octet multibyte handling of decoding errors and the
2501 USE-VALUE restart. (launchpad bug lp#314939)
2502 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
2503 restart on fd-stream decoding errors.
2504 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
2505 error is near the end of file.
2506 ** fix a double-error case in unibyte octet conversions, when the first
2507 use of USE-VALUE is ignored.
2508 ** fix bugs in handling of undefined code points in unibyte encodings.
2509 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
2510 streams after an UNREAD-CHAR.
2511 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
2512 object is allocated in a boxed region of dynamic space.
2513 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
2514 fork with multiple Lisp threads running is made, instead of going
2515 ahead with unpredictable consequences. (reported by Leslie Polzer)
2516 * bug fix: uses of slot accessors on specialized method parameters within
2517 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
2518 error while finalizing the class. This fix may cause classes with slot
2519 accessors to be finalized later than previously. (reported by Lars Rune
2520 Nøstdal; launchpad bug lp#473699)
2521 * bug fix: restore buildability on the MIPS platform. (regression from
2522 1.0.30.38, reported by Samium Gromoff)
2523 * bug fix: inspecting closures is less likely to fail with a type error.
2524 * bug fix: no timer starvation when setting the system clock back.
2525 (launchpad bug lp#460283)
2526 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
2527 standard pprint dispatch table as specified by CLHS.
2528 * bug fix: give CLISP a hint about a type declaration to enable it to build
2529 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
2531 * bug fix: correctly dump literal objects in defaulting forms of arglists.
2532 (reported by Attila Lendvai; launchpad bug lp#310132)
2533 * bug fix: distinguish in type specifiers between arrays that might be
2534 complex and arrays that are definitely complex. (launchpad bug lp#309129)
2535 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
2536 type. (reported by Levente Mészáros; launchpad bug lp#485972)
2537 * bug fix: setting the value of a symbol-macro within a method in the
2538 presence of type declarations works properly again. (reported by Iban
2539 Hatchondo; launchpad bug lp#485019)
2541 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
2542 * optimization: faster FIND and POSITION on strings of unknown element type
2543 in high SPEED policies. (thanks to Karol Swietlicki)
2544 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
2546 * improvement: better error signalling for bogus parameter specializer names
2547 in DEFMETHOD forms (reported by Pluijzer)
2548 * bug fix: DELETE-FILE once again works on logical pathnames (regression
2550 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
2552 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
2553 removes previous default initargs (reported by Lars Rune Nøstdal and
2555 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
2556 lambda-lists. (reported by Peter Seibel)
2557 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
2558 correctly when starting from an executable core without saved runtime
2559 options (reported by Faré Rideau, thanks to Zach Beane)
2560 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
2561 an optimization note instead. (reported by Martin Cracauer)
2562 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
2563 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
2564 new process group if it doesn't need to share stdin with the sbcl
2565 process. (thanks to Leslie Polzer)
2566 * bug fix: SATISFIES could be misoptimized to refer to a local function.
2567 (reported by Stanislaw Halik)
2569 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
2570 * improvement: stack allocation is should now be possible in all nested
2571 inlining cases: failure to stack allocate when equivalent code is manually
2572 open coded is now considered a bug.
2573 * improvements related to Unicode:
2574 ** the Unicode character database has been upgraded to the
2575 Unicode 5.1 standard, giving names and properties to a number of new
2576 characters, and providing a few extra characters with case
2578 ** the system now recognizes and produces names for Unicode Hangul
2579 syllable characters.
2580 ** the EBCDIC-US external-format is now supported for octet operations
2581 (as well as for stream operations).
2582 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
2583 be used to output toplevel compile-time effects into a separate .CFASL
2585 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
2586 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
2588 * optimization: TRUNCATE on known single- and double-floats is upto 25%
2590 * optimization: division of floating point numbers by constants uses
2591 multiplication by reciprocal when an exact reciprocal exists.
2592 * optimization: multiplication of single- and double-floats floats by
2593 constant two has been optimized.
2594 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
2595 sufficient type information is available. (thanks to Leslie Polzer)
2596 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
2597 known structure objects are as efficient as defstruct generated accessors.
2598 * optimization: unused vector creation can now be optimized away.
2599 * improvement: ASDF systems can now depends on SB-INTROSPECT.
2600 * improvement: a STYLE-WARNING is signalled when a generic function
2601 clobbers an earlier FTYPE proclamation.
2602 * improvement: the compiler is able to track the effective type of
2603 generic function across method addition and removal even in the
2604 absence of an explicit DEFGENERIC.
2605 * improvement: DESCRIBE now reports on symbols naming undefined
2606 but assumed or declared function as well.
2607 * improvement: recompilation of systems using SB-GROVEL now works
2608 (thanks to Leslie Polzer)
2609 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
2610 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
2612 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
2613 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
2614 well as user defined declaration names.
2615 ** VARIABLE-INFORMATION is now aware of alien variables.
2616 * improvement: improved address space layout on OpenBSD (thanks to Josh
2618 * improvement: pretty-printing of various Lisp forms has been improved
2619 (thanks to Tobias Rittweiler)
2620 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
2621 unused were deleted in safe code. (reported by John Fremlin)
2622 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
2624 * bug fix: some out-of-line array predicates were missing (reported by
2626 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
2628 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
2629 (thanks to Larry D'Anna)
2630 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
2631 as well. (reported by Josh Elsasser)
2632 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
2633 leading to possible attempts to delete the same file twice. See docstring
2634 on DELETE-FILE for details. (reported by John Fremlin)
2635 * bug fix: DELETE-FILE once again deletes the file named by the pathname
2636 designator argument, rather than its truename. (reported by Luis
2638 * bug fix: the low-level debugger had 32-bit assumptions and was missing
2639 information about some array types. (thanks to Luis Oliveira)
2640 * bug fix: moderately complex combinations of inline expansions could
2641 be miscompiled if the result was declared to be dynamic extent.
2642 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
2643 form (+ <variable> <integer>) were miscompiled under certain
2645 * bug fix: in some cases no compiler note about failure to stack allocate
2646 was emitted, even if the objects were in fact heap allocated.
2647 * bug fix: minor violation of "otherwise inaccessible" rule for stack
2648 allocation could cause objects users might reasonably expect to
2649 be heap allocated to be stack allocated.
2650 * bug fix: DESCRIBE signalled an error for generic functions under
2651 certain circumstances. (thanks to Leslie Polzer)
2652 * bug fix: Fixed spelling of an error message.
2654 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
2655 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
2656 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
2657 of SB-THREAD:THREAD-ERROR-THREAD.
2658 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
2659 * new feature: docstrings for local and anonymous functions are no longer
2660 discarded. (thanks to Leslie Polzer)
2661 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
2662 values in other threads.
2663 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
2664 about object allocation.
2665 * optimization: division of a real float by a complex float is implemented
2666 with a specialised code sequence.
2667 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
2668 keywords is an order of magnitude faster.
2669 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
2670 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
2671 methods, and similarly for non-standard metaclass classes as long as there
2672 are no methods additional on MAKE-INSTANCE.
2673 * optimization: more efficient type-checks for FIXNUMs when the value
2674 is known to be a signed word on x86 and x86-64.
2675 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
2676 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
2678 * optimization: compiler is smarter about delegating argument type checks to
2680 * optimization: several character functions are now compiled somewhat more
2681 efficiently. (reported by Lynn Quam)
2682 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
2683 * improvement: less unsafe constant folding in floating point arithmetic,
2684 especially for mixed complex/real -float operations.
2685 * optimization: constant double and single floats are stored in native
2686 unboxed format on x86[-64].
2687 * optimization: smarter code for arithmetic operations with constant floats,
2688 complex floats, or integers on x86[-64].
2689 * optimization: smarter code for conjugate/multiplication of float complexes
2690 and abs/negate of floats on x86-64.
2691 * optimization: more efficient complex float and real float operations on
2693 * improvement: complex float division is slightly more stable.
2694 * improvement: DESCRIBE output has been reworked to be easier to read and
2695 contains more pertinent information.
2696 * improvement: failure to provide requested stack allocation compiler notes
2697 provided in all cases (requested stack allocation not happening without a
2698 note being issued is now considered a bug.)
2699 * bug fix: SB-POSIX exports the documented types and functions
2700 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
2701 types. (reported by "abhi")
2702 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
2703 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
2704 (thanks to Paul Khuong)
2705 * bug fix: looping around HANDLER-CASE could silently consume stack space
2706 on each iteration. (reported by "foobar")
2707 * bug fix: better error signalling when calls to functions seeking elements
2708 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
2709 (reported by Tobias Rittweiler)
2710 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
2711 directory components now works as it used to. (various prolems reported by
2712 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
2713 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
2714 (reported by Elliot Slaughter, thanks to Stas Boukarev)
2715 * bug fix: bogus undefined variable warnings from fopcompiled references to
2716 global variables. (thanks to Lars Rune Nøstdal)
2717 * bug fix: foreign function names should now appear in backtraces on
2718 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
2719 * bug fix: SETF compiler macro documentation strings are not discarded
2721 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
2722 (thanks to Alex Plotnick)
2723 * bug fix: SLEEP accepts large integer arguments, truncating them to
2724 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
2725 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
2726 * bug fix: compiler notes for expensive slot type checks could be emitted
2727 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
2729 changes in sbcl-1.0.29 relative to 1.0.28:
2730 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
2731 https://bugs.launchpad.net/sbcl
2732 Bugs can be reported directly there, or by sending email to
2733 sbcl-bugs@lists.sourceforge.net
2734 (no subscription required.)
2735 * minor incompatible change: under weak type checking policy integer
2736 types are weakened less aggressively.
2737 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
2738 allowed to return, which causes SBCL to quit with exit status 0. Previously
2739 if the function returned with a small integer return value, that value
2740 was accidentally reused as the exit status.
2741 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
2742 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
2743 :HASH-FUNCTION argument. Refer to user manual for details.
2744 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
2746 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
2747 microseconds since the Unix epoch on all platforms.
2748 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
2749 allows the compiler to safely elide boundedness checks for special
2751 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
2752 the symbol, prohibits both lexical and dynamic binding. This is mainly an
2753 efficiency measure for threaded platforms, but also valueable in
2755 * new feature: UNC pathnames are now understood by the system on Windows.
2756 * optimization: the compiler uses a specialized version of FILL when the
2757 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
2759 * optimization: accesses to potentially non-simple arrays where element type
2760 is known are 50% faster.
2761 * optimization: compiler now generates faster array typechecking code.
2762 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
2764 * optimization: multidimensional array accesses in the absence of type
2765 information regarding array rank are approximately 10% faster due to
2766 open coding of ARRAY-RANK.
2767 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
2768 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
2770 * optimization: result of call to VECTOR can now be stack allocated.
2771 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
2772 as long as the resulting array is one-dimensional and has a known
2773 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
2774 length of the list matches the known length of the vector does not
2775 allocate the list as an intermediate step. Ditto for VECTOR and simple
2777 * optimization: MAKE-ARRAY can now stack allocate in the presence of
2778 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
2779 known element type, and is known to be simple and one dimensional.
2780 * improvement: SBCL now emits a compiler note where stack allocation was
2781 requested but could not be provided (not in all cases, unfortunately)
2782 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
2783 * improvement: pretty-printing loop has been implemented properly. (thanks
2784 to Tobias Rittweiler)
2785 * documentation: CLOS slot typechecing policy has been documented.
2786 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
2787 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
2788 pointer, leading to memory faults. (thanks to Bart Botta)
2789 * bug fix: better floating point exception handling on x86/OpenBSD.
2790 (thanks to Josh Elsasser)
2791 * bug fix: exit status from QUIT when called under --script was lost
2792 (reported by Hubert Kauker)
2793 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
2794 same implementation of FILL to initialize the array, even if a more
2795 efficient one was available (reported by Stas Boukarev, thanks to
2797 * bug fix: potential miscompilation of array stack allocation on x86 and
2798 x86-64. (reported by Time Tossavainen)
2799 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
2800 result in their subforms being treated as top level forms. (reported by
2802 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
2803 than a machine register could leave garbage in the high bits of the
2804 result register (bug 316325).
2805 * bug fix: disable address space randomization Linux/x86-64 as well,
2806 not just x86-64. (reported by Ken Olum)
2807 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
2808 generate incorrect code.
2809 * bug fix: #201; type inference for CONS and ARRAY types could derive
2810 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
2811 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
2812 could not be assigned to or bound with PROGV. (reported by Lorenz
2814 * bug fix: the value of CL:- in the inspector was the previous expression
2815 evaluated rather than the expression being evaluated.
2816 * bug fix: constants can no longer be locally declared special.
2817 * bug fix: signals delivered to threads started from foreign land (read:
2818 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
2819 thread by blocking all signals and resignalling.
2820 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
2821 from :INITFORM, if any.
2823 changes in sbcl-1.0.28 relative to 1.0.27:
2824 * a number of bugs in cross-compilation have been fixed, with the ultimate
2825 result that building under (at least) clisp should be much more reliable.
2826 * minor incompatible changes: echo-streams now propagate unread-char to the
2827 underlying input stream, and no longer permit unreading more than one
2829 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
2830 frames, allowing for instance more reliable backtraces.
2831 * improvement: the debugger REPL can now reference lexical variables
2832 by name directly for code compiled with (DEBUG 3).
2833 * improvement: errors from malformed declarations now have better source
2834 paths associated with them. (thanks to Tobias Rittweiler)
2835 * optimization: faster local calls on x86/x86-64
2836 * bug fix: some error messages for out-of-bound array indexes confused the
2837 index and the bound. (thanks to Stas Boukarev)
2838 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
2840 * bug fix: running regressions tests in shells without OSTYPE set now works.
2841 (reported by Harald Hanche-Olsen)
2842 * bug fix: more robust static space exhaustion signalling from
2843 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
2844 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
2845 docstring away instead of storing it under names such as (LAMBDA (X)).
2846 (reported by Leslie Polzer)
2847 * bug fix: timers could go off in the wrong order, be delayed indefinitely
2848 (thanks to Ole Arndt for the patch)
2849 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
2850 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
2851 potentially-invalid effective methods in its cache.
2852 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
2853 instances as well (thanks to Paul Khuong)
2854 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
2855 SB-POSIX:WAITPID and their C equivalents.
2856 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
2858 changes in sbcl-1.0.27 relative to 1.0.26:
2859 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
2860 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
2861 * improvement: the system either recovers from stack exhaustion or dies
2862 properly as opposed to leaving the user uncertain of whether the handler
2863 trampled on some random memory next to the stack or having to rely on
2864 --lose-on-corruption (which is still a good idea to use in production
2865 because stack exhaustion can happen in signal handlers which will likely
2867 * bug fix: fix gc related interrupt handling bug on ppc (regression from
2868 1.0.25.37, reported by Harald Hanche-Olsen)
2869 * bug fix: work around signal delivery bug in darwin (regression from
2870 1.0.25.44, reported by Sidney Markowitz)
2871 * bug fix: fix ERROR leaking memory (reported by David Thompson)
2873 changes in sbcl-1.0.26 relative to 1.0.25:
2874 * incompatible change: an interruption (be it a function passed to
2875 INTERRUPT-THREAD or a timer function) runs in an environment where
2876 interrupts can be enabled. The interruption can use
2877 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
2878 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
2879 potentially running out of stack. Keep in mind that in the absence
2880 of WITHOUT-INTERRUPTS some potentially blocking operation such as
2881 acquiring a lock can enable interrupts.
2882 * incompatible change: GC-OFF and GC-ON are removed, as they were
2883 always unsafe. Use WITHOUT-GCING instead.
2884 * new feature: runtime option --disable-ldb
2885 * new feature: runtime option --lose-on-corruption to die at the
2886 slightest hint of possibly non-recoverable errors: running out of
2887 memory, stack, alien stack, binding stack, encountering a memory
2888 fault, etc. In the absence of --lose-on-corruption a warning is
2890 * enhancement: detect binding stack exhaustion
2891 * enhancement: detect alien stack exhaustion on x86/x86-64
2892 * improvement: generally more stable and reliable interrupt handling
2893 * improvement: there is a per thread interruption queue,
2894 interruptions are executed in order of arrival
2895 * improvement: a repeating timer reschedules itself when the it has
2896 finished, but expiration times are spaced equally. If an
2897 expiration time is in the past it will trigger after a short grace
2898 period that may give a chance to other things to run.
2899 * optimization: slightly faster gc on multithreaded builds
2900 * optimization: faster WITHOUT-GCING
2901 * bug fix: when JOIN-THREAD signals an error, do it when not holding
2902 important locks so that the debugger/handler doesn't produce
2903 recursive errors or deadlock.
2904 * bug fix: real-time signals are not used anymore, so no more
2905 hanging when the system wide real-time signal queue gets full.
2906 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
2908 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
2909 * bug fix: fix random memory faults related to interrupts on alpha
2910 * bug fix: fix random memory faults related to interrupts on sparc
2911 * bug fix: fix deadlocks related to starting threads
2912 * bug fix: fix deadlines on locks on futex platforms
2913 * bug fix: restore errno in signal handlers
2914 * bug fix: fix deadlocks related to hash tables
2915 * bug fix: fix deadlocks in pcl
2917 changes in sbcl-1.0.25 relative to 1.0.24:
2918 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
2919 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
2920 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
2921 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
2922 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
2923 better name and does not return values so stale on multiprocessor systems.
2924 Also, HOLDING-MUTEX-P was added for about the only sane usage of
2926 * improvement: unithread builds keep track of MUTEX-VALUE.
2927 * improvement: reading from a TWO-WAY-STREAM does not touch the output
2928 stream anymore making it thread safe to have a concurrent reader and
2929 a writer, for instance, in a pipe.
2930 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
2931 arguments, making compiler-macros for SETF-functions able to inspect
2932 their constant arguments.
2933 * improvement: COMPILE-FILE reports times with millisecond accuracy
2934 (thanks to Luis Oliveira)
2935 * optimization: CHAR-CODE type derivation has been improved, making
2936 TYPEP elimination on subtypes of CHARACTER work better. (reported
2937 by Tobias Rittweiler, patch by Paul Khuong)
2938 * bug fix: setting alien structure fields of type struct by value now
2939 computes the right offset for the memory copy.
2940 * bug fix: compilation problem involving inlined calls to aliens with
2941 result type VOID. (reported by Ken Olum)
2942 * bug fix: #235a; sequential inline expasion in different policies no
2943 longer reuses the functional from the previous expansion site.
2944 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
2945 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
2946 * bug fix: named ENUMs in multiply-referenced alien record types no longer
2947 cause an implied type redefinition. Regression from 1.0.21.29.
2948 * bug fix: sign-extension of small signed return values now works with C
2949 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
2950 * improvements to the Windows port:
2951 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
2952 Westfold, thanks to Rudi Schlatte)
2954 changes in sbcl-1.0.24 relative to 1.0.23:
2955 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
2956 vector of a multidimensional SIMPLE-ARRAY.
2957 * new feature: the system now signals a continuable error if standard
2958 readtable modification is attempted. (thanks to Tobias Rittweiler)
2959 * new feature: DIRECTORY has been extended with a non-standard keyword
2960 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
2961 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
2962 has been robustified and documented better. (thanks to Robert Goldman)
2963 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
2964 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
2965 * tradeoff: constant FORMAT control strings are now compiled unless
2966 SPACE > SPEED (previously only when SPEED > SPACE.)
2967 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
2969 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
2971 * bug fix: lexical type declarations are now correctly reported by
2972 SB-CLTL2. (reported by Larry D'Anna)
2973 * bug fix: STRING-TO-OCTETS did not handle :START properly when
2974 using UTF-8 as external format. (thanks to Luis Oliveira)
2975 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
2976 are signalled correctly. (thanks to Stas Boukarev)
2977 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
2978 designator. (thanks to Tobias Rittweiler)
2979 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
2980 designator, and returns T instead of the function. (thanks to
2982 * bug fix: direct superclasses of STANDARD-CLASS and
2983 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
2984 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
2985 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
2986 when no class with the named slot yet exists no longer causes a
2987 compile-time style-warning.
2988 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
2989 in safe code. (reported by Didier Verna)
2990 * bug fix: #430; nested structure constructors can stack allocate.
2991 * bug fix: on some 64-bit platforms dynamic space size was truncated
2992 to #xffff0000 bytes. (reported by Benjamin Lambert)
2993 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
2994 REPL unusable. (reported by Daniel Herring)
2995 * bug fix: return values of READ-SEQUENCE did not take :START into
2996 account on file streams, regressions since 1.0.12.22. (reported by
2997 Thomas Russ, patch by Paul Khuong)
2998 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
2999 method specializer used to confuse permuation vector optimization.
3000 * bug fix: system inserted bogus implicit type declarations for local
3001 special variables in DEFMETHOD bodies.
3002 * bug fix: #354; duplicated frames in backtraces due to
3003 non-tail-call-optimized XEPs to functions with return type NIL
3005 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
3006 initializes structure object slots according to DEFSTRUCT initforms,
3007 and DEFSTRUCT forms :INCLUDEind structure classes defined using
3008 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
3009 (reported by Bruno Haible and Stephen Wilson)
3010 * bug fix: #395; fill-pointer output streams used now support
3011 element-type BASE-CHAR as well.
3012 * bug fix: compiler error when attempting to derive return value of
3013 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
3015 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
3017 * bug fix: Mac OS X binaries should now be portable between Leopard
3020 changes in sbcl-1.0.23 relative to 1.0.22:
3021 * enhancement: when disassembling method functions, disassembly
3022 for the associated fast function is also produced.
3023 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
3025 * optimization: printing with *PRINT-PRETTY* true is now more
3026 efficient as long as the object being printed doesn't require
3027 special handling by the pretty printer.
3028 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
3029 now interact correctly with type declarations.
3030 * partial bug fix: PCL detects infinite recursion during wrapper
3031 validation. (thanks to Attila Lendvai)
3032 * bug fix: #426; nested function calls are inlined properly.
3033 Previously if FOO was an inline function, in calls of the form
3034 (FOO (FOO ...)) the outer call was not inlined.
3035 * bug fix: long long arguments passed in registers to alien
3036 functions on PowerPC Linux and NetBSD are now handled correctly
3037 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
3039 changes in sbcl-1.0.22 relative to 1.0.21:
3040 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
3041 for the shared object in the current directory, but passes the native
3042 namestring of the designated pathname to the operation system's shared
3043 object loading function as-it.
3044 * minor incompatible change: --disable-debugger toplevel option now takes
3045 effect before processing of initialization files and --eval or --load
3047 * new feature: new commandline argument: --script, which supports
3048 shebang lines. See documentation for details. (based on work by
3050 * new feature: SAVE-LISP-AND-DIE can save current values of
3051 --dynamic-space-size and --control-stack-size in the executable core,
3052 causing it to skip normal runtime option processing. See documentation
3053 for details. (thanks to Zach Beane)
3054 * enhancement: inoccous calls to EVAL or generic functions dispatching
3055 on subclasses of eg. STREAM no longer cause compiler notes to appear.
3056 * enhancement: the system no longer resignals errors from --load and
3057 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
3058 associated with the original error to be lost. (thanks to Ariel
3060 * enhancement: :DONT-SAVE keyword argument has been added to
3061 LOAD-SHARED-OBJECT for controlling interaction with
3062 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
3063 the effects of an earlier LOAD-SHARED-OBJECT call.
3064 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
3065 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
3066 provided. (reported by Cedric St-Jean)
3067 * bug fix: circularity handling in the reader did not treat raw
3068 structure slots correctly. (reported by Cedric St-Jean)
3069 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
3070 file descriptors when there were none.
3071 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
3072 was broken. (reporteed by Willem Broekema)
3073 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
3074 pathnames without a directory.
3075 * bug fix: COMPILE-FILE did not warn about undefined variable
3076 references at toplevel, and LOAD of the resulting fasl did
3077 not signal an error.
3078 * bug fix: functions with non-required arguments used to end up with
3079 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
3080 * bug fix: redefining a function with non-required arguments didn't
3081 update the system's knowledge about its call signature properly.
3082 * bug fix: fixed #431; incompatible alien record type redefinitions
3083 are detected and handled. (reported by Neil Haven)
3084 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
3085 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
3087 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
3088 after alien stack frames.
3089 * bug fix: strings passed to mk{s,d}temp lacked null termination
3091 changes in sbcl-1.0.21 relative to 1.0.20:
3092 * new feature: the compiler is able to track the effective type of a
3093 generic function across method addition and removal.
3094 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
3095 appropriately typed structure slots without locking.
3096 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
3097 information like those gathered by TIME using a programming-friendly
3099 * new feature: TIME reports time taken even if the form performs a
3100 non-local transfer of control.
3101 * enhancement: reduced conservativism on GENCGC platforms: on
3102 average 45% less pages pinned (measured from SBCL self build).
3103 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
3104 mutate constant symbols or violate declaimed type of the symbol.
3105 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
3106 sleeping on the semaphore in heavily contested semaphores.
3107 * bug fix: semaphores and condition variables were not interrupt
3109 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
3110 owned by other threads anymore.
3111 * bug fix: FIND on lists called KEY outside the specified
3112 subsequence. (reported by budden)
3113 * bug fix: LOG doesn't use single-float intermediate results when
3114 given mixed integer and double-float arguments, leading to better
3115 precision. (reported by Bob Felts)
3116 * bug fix: LOG with base zero returned values of inconsistent type.
3118 changes in sbcl-1.0.20 relative to 1.0.19:
3119 * minor incompatible change: OPTIMIZE qualities
3120 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
3121 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
3122 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
3123 * documentation: some slot access efficiency guidelines have been
3124 added to the user manual.
3125 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
3126 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
3127 as ASSOC and MEMEBER.
3128 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
3129 to more efficient EQ-comparison versions more often.
3130 * optimization: enhanced derivation of DOLIST iteration variable type
3132 * optimization: constant folding of simple (LIST ...) forms as DOLIST
3134 * optimization: runtime lookup of function definitions can be
3135 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
3136 * optimization: compiler is able to derive the return type of
3137 (AREF (THE STRING X) Y) as being CHARACTER.
3138 * optimization: CLRHASH on empty hash-tables no longer does pointless
3139 work. (thanks to Alec Berryman)
3140 * optimization: REPLACE deftransforms don't punt when :START1 or
3142 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
3143 no longer emits a code deletion note. (reported by Andrew
3145 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
3146 functions with an odd number of &OPTIONAL arguments, a &REST
3147 argument, and one or more &KEY arguments at the call site.
3148 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
3149 arguments appeared at call sites as well.
3150 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
3151 READ-LINE &co can no longer read from them afterwards. (reported
3153 * bug fix: fixed #427: unused local aliens no longer cause compiler
3154 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
3156 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
3157 alien-stack leakage. (reported by Andy Hefner)
3158 * bug fix: PROGV signals an error when an attempt to violate declared
3159 type of a variable or bind a constant is made.
3160 * bug fix: SET signals an error when an attempt to violate declared
3161 type of a variable is made.
3162 * bug fix: restart computation during the execution of a restart
3163 test function no longer causes infinite recursion. (reported by
3165 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
3166 signals an error. (thanks to Pierre Mai)
3167 * bug fix: EXPORT left symbol unexported in conflict situations.
3168 (thanks to Michael Weber)
3169 * bug fix: correctly handle name conflicts involving CL:NIL.
3170 (thanks to Michael Weber)
3171 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
3172 conflicts arising from USEing package with conflicting symbols
3173 correctly. (thanks to Michael Weber)
3175 changes in sbcl-1.0.19 relative to 1.0.18:
3176 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
3177 warnings that go otherwise unhandled will be muffled if they are
3178 of the type that's the value of this variable.
3179 * optimization: stack allocation is slightly more efficient on x86
3181 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
3182 where a raw slot always is initialized using the initform whose
3183 type is not know sufficiently well a compile-time are now compiled
3184 correctly. (reported by John Morrison)
3185 * bug fix: compiler no longer makes erronous assumptions in the
3186 presence of non-foldable SATISFIES types.
3187 * bug fix: stack analysis missed cleanups of dynamic-extent
3188 arguments in non-let-converted calls to local functions.
3189 * improvements to the Windows port:
3190 ** adjusted address spaces for building on both Win32 and
3191 Win64. (thanks for John Connors)
3192 * fixed some bugs revealed by Paul Dietz' test suite:
3193 ** interval arithmetic during type derivation used inexact integer
3194 to single-float coercions.
3195 ** arithmetic operations involving large integers and single
3196 floats give the same results in compiled and interpreted code.
3197 ** deriving the result type of COERCE no longer signals an error
3198 if the derived type of the second argument is a MEMBER type
3199 containing invalid type specifiers.
3200 ** ADJOIN with constant NIL as second argument works correctly.
3201 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
3203 changes in sbcl-1.0.18 relative to 1.0.17:
3204 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
3205 profiles only the current thread.
3206 * minor incompatible change: changes to SYMBOL-VALUE of constants
3207 defined with DEFCONSTANT now signal an error.
3208 * enhancement: SB-SPROF now has support for wallclock profiling,
3209 and is also able to profile specific threads. REPORT output
3210 has also additional sorting options.
3211 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
3213 * optimization: structure allocation has been improved
3214 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
3215 ** out of line constructors are ~10% faster.
3216 ** inline constructors are ~15% faster.
3217 ** inline constructors are capable of dynamic extent allocation
3218 (generally on x86 and x86-64, in some cases on other platforms
3220 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
3222 * optimization: file compiler is now able to coalesce non-circular
3223 lists, non-base strings, and bit-vectors. Additionally, constants
3224 are never referenced through SYMBOL-VALUE at runtime.
3225 * optimization: code defining methods on PRINT-OBJECT (and other
3226 generic functions in the COMMON-LISP package) now loads faster.
3227 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
3229 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
3230 fasl is now deleted. (reported by Attila Lendvai)
3231 * bug fix: READ-LINE always returned NIL for the last line in files.
3232 (reported by Yoshinori Tahara)
3233 * bug fix: more accurate disassembly annotations of foreign function
3234 calls. (thanks to Andy Hefner)
3235 * bug fix: trimming non-simple strings and non-string string
3236 designators when the there is nothing to trim works properly.
3237 (thanks to James Knight)
3238 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
3239 (thanks to Travis Cross)
3240 * fixed some bugs revealed by Paul Dietz' test suite:
3241 ** NIL is a valid function name (regression at 1.0.13.38)
3242 ** FILL on lists was missing its return value (regression at 1.0.12.27)
3243 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
3244 fill pointers properly (regression at 1.0.12.23)
3245 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
3246 displacement indices properly (regression at 1.0.12.23)
3248 changes in sbcl-1.0.17 relative to 1.0.16:
3249 * temporary regression: user code can no longer allocate closure
3250 variable storage on stack, due to bug 419 without explicitly
3251 requesting it. Please consult sbcl-devel for advice if you need to
3252 use this feature in the meanwhile.
3253 * new feature: runtime argument --control-stack-size can be used to
3254 adjust thread default control stack size.
3255 * enhancement: improved TIME output
3256 ** all times are reported using the measured accuracy (milliseconds
3257 for real and GC times, microseconds for everything else.)
3258 ** processor cycle counts on x86 and x86-64.
3259 ** interpreted forms are counted for both evaluator modes.
3260 ** number of lambdas converted by the compiler is reported.
3261 ** CPU percentage report (computed from real and total run time.)
3262 ** more comprehensive run time reporting, using a condenced format
3263 ** interperted form, lambda, and page fault counts are omitted
3265 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
3267 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
3268 * optimization: two argument forms of LAST are upto ~10% faster
3269 in normal SPEED policies.
3270 * optimization: NCONC no longer needs to heap cons its &REST list
3271 in normal SPEED policies.
3272 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
3273 to Sidney Markowitz)
3274 * bug fix: UNION and NUNION work with :TEST-NOT once more,
3275 regression since 1.0.9.1. (thanks to Eric Marsden)
3276 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
3277 since 1.0.15.36. (thanks to Paul Khuong)
3278 * bug fix: LAST when always returned the whole list when given a bignum
3279 as the second argument.
3280 * bug fix: dynamic extent allocation of nested lists and vectors
3281 could leak to otherwise accessible parts.
3282 * bug fix: invalid optimization of heap-allocated alien variable
3284 * bug fix: fasl header checking is less vulnerable to different
3285 platform word lengths.
3286 * bug fix: more correct assembler syntax for GNU binutils
3287 2.18.50.0.4 support. (thanks to Marijn Schouten)
3288 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
3290 * bug fix: the fopcompiler can handle LOCALLY forms (with no
3291 declarations) successfully. (reported by Attila Lendvai)
3293 changes in sbcl-1.0.16 relative to 1.0.15:
3294 * minor incompatible change: revert the changes to sb-posix's error
3295 signaling added in 1.0.14.
3296 * minor incompatible change: change PROBE-FILE back to returning
3297 NIL whenever we can't get a truename, as was the case before 1.0.14.
3298 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
3299 inherits from ERROR instead of just CONDITION.
3300 * new feature: SB-INTROSPECT can provide source locations for instances
3301 as well. (thanks to Tobias Rittweiler)
3302 * optimization: binding special variables now generates smaller code
3303 on threaded platforms.
3304 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
3305 and cases where no :TEST is given but the compiler can infer that
3306 the element to search is of type (OR FIXNUM (NOT NUMBER)).
3307 * optimization: better LOGNOT on fixnums.
3308 * optimization: modular arithmetic for a particular requested width
3309 is implemented using a tagged representation unless a better
3310 representation is available.
3311 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
3312 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
3313 for wellformedness and returns a specialized vector. (reported by
3314 Francois-Rene Rideau)
3315 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
3316 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
3317 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
3318 unscheduling timer at the same time as another timer fires.
3319 * bug fix: don't reschedule timers for dead threads.
3320 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
3321 * bug fix: copying output from RUN-PROGRAM to a stream signalled
3322 bogus errors if select() was interrupted.
3323 * enhancement: add support for fcntl's struct flock to SB-POSIX.
3325 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
3326 * enhancement: cleaner backtraces for interactive interrupts, as
3327 well as other cases where the interesting frames used to be
3328 obscured by interrupt handling frames.
3329 * enhancement: untracing a whole package using (UNTRACE "FOO") is
3330 now supported, and tracing a whole package using (TRACE "FOO") now
3331 traces SETF-functions as well.
3332 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
3333 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
3334 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
3335 * unreadably printed representation of hash-tables now includes
3337 * bug fix: partially fixed #188: type propagation from assignments
3338 is now more efficient.
3339 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
3340 'DOUBLE-FLOAT) are not flushable.
3341 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
3342 full address of the object, and none of the tag bits.
3343 * bug fix: readably printing hash-tables now respects other printer
3344 control variables. (reported by Cedric St-Jean)
3345 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
3346 keyword with MAKE-HASH-TABLE.
3347 * bug fix: export SB-POSIX:MKSTEMP.
3348 * bug fix: SORT was not interrupt safe.
3349 * bug fix: XREF accounts for the last node of each basic-block as
3351 * bug fix: MAKE-INSTANCE optimizations interacted badly with
3352 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
3353 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
3354 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
3355 create obsolete instances in the case of redefinition or
3356 obsoletion of a superclass. (thanks to Andy Hefner)
3357 * bug fix: Support for the Alpha architecture has been revived; it had
3358 suffered somewhat from lack of maintenance since sbcl-1.0.
3359 * improvements to the Windows port:
3360 ** The system detects the codepage to use at startup, instead of
3361 using the value from the saved core. (thanks to Kei Suzuki)
3363 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
3364 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
3365 (see documentation for details.)
3366 * revived support for OpenBSD (contributed by Josh Elsasser)
3367 * partially fixed bug #108: ROOM no longer suffers from occasional
3368 (AVER (SAP= CURRENT END)) failures.
3369 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
3370 bodies no longer cause a WARNING to be signalled. (reported by
3372 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
3373 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
3374 the bug in TRUNCATE.) (reported by Michael Weber)
3375 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
3376 no samples. (reported by Andy Hefner)
3377 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
3378 no longer appear as (NIL ...) frames in backtraces.
3379 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
3380 is now actually exported from SB-EXT as documented. (reported by
3382 * bug fix: sb-aclrepl now correctly understands how to inspect
3383 single-floats on 64-bit platforms where single-floats are not boxed.
3384 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
3385 yet been finalized. (reported by Levente Meszaros)
3386 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
3387 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
3388 SBCL-specific optimize qualities.
3390 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
3391 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
3392 an executable in the search path, and does so in the child
3393 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
3394 been removed; it can be found in the CVS history, for somebody who
3395 needs that search behavior (see the manual).
3396 * minor incompatible change: compiler policy re. weakening type
3397 checks has changed: now type checks are weakened only if SAFETY < 2
3399 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
3400 unparsing of directory pathnames as files. Analogously,
3401 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
3402 filename to parse into a directory pathname.
3403 * enhancement: implicit generic function creation now signals a
3404 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
3405 users can bind handlers for and muffle around calls to LOAD.
3406 * enhancement: RUN-PROGRAM allows unicode arguments and environments
3407 to be used (using the default stream external format), and allows
3408 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
3409 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
3410 strings and vectors whose element-type or simplicity is not fully
3411 known at compile-time.
3412 * optimization: STRING-TRIM and related functions no longer allocate
3413 a new string when no trimming needs to be performed. These functions
3414 are also faster than before when the input string has been declared
3416 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
3417 * optimization: READ-LINE is significantly faster for files containing
3419 * optimization: non-open coded uses of character comparison operators
3420 (e.g. char=) no longer cons when called with more than one parameter
3421 on platforms supporting dynamic-extent allocation.
3422 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
3423 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
3424 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
3426 * bug fix: some sequence functions elided bounds checking when
3428 * bug fix: too liberal weakening of union-type checks when SPEED >
3430 * bug fix: more bogus fixnum declarations in ROOM implementation
3433 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
3434 * new feature: MAKE-HASH-TABLE now experimentally accepts a
3435 :SYNCHRONIZED argument, which makes the hash-table safe for
3436 concurrent accesses (but not iteration.) See also:
3437 SB-EXT:WITH-LOCKED-HASH-TABLE, and
3438 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
3439 * optimization: CONCATENATE on strings is an order of magnitude faster
3440 in code compiled with (> SPEED SPACE).
3441 * optimization: SUBSEQ is ~50% faster on lists.
3442 * bug fix: bug 417 fixed -- source location reporting is now more robust.
3443 * bug fix: SUBSEQ on a list will now correctly signal an error if if
3444 END is smaller then START.
3445 * bug fix: SB-PROFILE will no longer report extra consing for nested
3446 calls to profiled functions.
3447 * bug fix: ROOM implementation had bogus fixnum declarations which
3448 could cause type-errors when calling ROOM on large images.
3449 * bug fix: if file compilation is aborted, the partial fasl is now
3450 deleted, and COMPILE-FILE returns NIL as the primary value.
3451 * bug fix: number of thread safety issues relating to SBCL's internal
3452 hash-table usage have been fixed.
3453 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
3454 be returned from its body when the values were being returned
3455 using unknown-values return convection and the W-P-O was wrapped
3456 inside an UNWIND-PROTECT.
3457 * bug fix: sb-posix should now compile again under Windows, enabling
3458 slime to work again.
3460 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
3461 * incompatible change: hash-table accessor functions are no longer
3462 automatically protected by locks. Concurrent accesses on the same hash-table
3463 from multiple threads can give inconsistent results or even corrupt the
3464 hash-table completely. Multi-threaded applications should do their own
3465 locking at the correct granularity. In the current implementation it is
3466 still safe to have multiple readers access the same table, but it's not
3467 guaranteed that this property will be maintained in future releases.
3468 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
3469 and will signal an error at runtime.
3470 * enhancement: SB-THREAD package now exports a semaphore interface.
3471 * enhancement: CONS can now stack-allocate on x86 and
3472 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
3474 * enhancement: nested lists can now be stack allocated on
3475 platforms providing stack allocation support.
3476 * enhancement: dynamic-extent support has been extended to support
3477 cases where there are multiple possible sources for the stack
3479 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
3480 if the mutex is uncontested on Linux.
3481 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
3482 as specified by the CLHS. (thanks to Tobias Rittweiler)
3483 * bug fix: NaN comparison now works on x86-64.
3484 * bug fix: CLOSE :ABORT T on a stream with pending output now
3486 * bug fix: instances of non-standard metaclasses using standard
3487 instance structure protocol sometimes missed the slot type checks
3489 * bug fix: known functions can be inlined in high-debug code.
3491 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
3492 * minor incompatible change: the MSI installer on Windows no longer
3493 associates .lisp and .fasl files with the installed SBCL.
3494 * minor incompatible change: :UNIX is no longer present in *FEATURES*
3495 on Windows. (thanks to Luis Oliviera)
3496 * new feature: SB-CLTL2 contrib module now implements
3497 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
3498 * optimization: scavenging weak pointers is now more efficient,
3499 requiring O(1) instead of O(N) per weak pointer to identify
3500 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
3501 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
3502 method bodies using constant slot-names when the first argument is
3503 a specializer parameter for the method.
3504 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
3505 names, when the class of the instance is a direct instance
3506 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
3507 as slow as the constant slot-name case.)
3508 * optimization: member type construction is now O(N) instead
3510 * optimization: UNION and NUNION are now O(N+M) for large
3511 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
3513 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
3514 now more readable in environments like Slime which display it.
3515 (thanks to Tobias C. Rittweiler)
3516 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
3517 was able to infer the correct argument type for the object on which
3518 the CAS operation was being performed.
3519 * bug fix: copy propagation interfered with parallel assignment
3520 semantics in local calls. (reported by Paul Khuong)
3521 * bug fix: the signed modular fixnum shift compiled to wrong code on
3522 x86 and x86-64. (spotted by a slight modification to some of
3525 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
3526 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
3527 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
3528 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
3530 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
3531 and generic function now print the object identity for anonymous
3532 instances. (thanks to Attila Lendvai)
3533 * enhancement: as an extension to MOP, SBCL now supports SETF of
3534 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
3535 (thanks to Attila Lendvai)
3536 * enhancement: sb-cover has an alternate annotation mode which puts
3537 the form annotations at the car of the form, instead of annotating
3538 it completely. The benefit of this mode is that it shows better
3539 which forms were instrumented by the compiler.
3540 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
3541 by printer control variables. (reported by Dan Corkill)
3542 * bug fix: system leaked memory when delayed output was performed by
3543 the OS in smaller chunks then expected. (thanks to David Smith)
3544 * bug fix: system leaked memory when file streams were not closed
3546 * bug fix: large objects written to slow streams that were modified
3547 after the write could end up with the modified state written to
3548 the underlying file descriptor.
3549 * bug fix: multiple threads operating in parallel on the same stream
3550 could cause buffer-overflows.
3551 * bug fix: source location information is stored correctly
3552 (broken since 1.0.6). This bug would generally show up as the
3553 Slime debugger highlighting the wrong form when the sldb-show-source
3555 * bug fix: Branch forms are again annotated as branches in the sb-cover
3557 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
3558 on x86-64. (reported by Gregory Vanuxem)
3559 * bug fix: EQUALP could return wrong results for structures with raw
3560 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
3561 word). (reported by Vjacheslav Fyodorov)
3562 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
3565 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
3566 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
3567 atomic compare-and-swap operations on threaded platforms.
3568 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
3569 allows assigning a global minimum value to optimization qualities
3570 (overriding proclamations and declarations).
3571 * enhancement: closed over variables can be stack-allocated on x86
3573 * performance bug fix: GETHASH and (SETF GETHASH) are once again
3575 * optimization: slot definition lookup is now O(1). This speeds up
3576 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
3577 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
3578 * optimization: ASSOC and MEMBER can now be open-coded for all
3579 combinations of keyword arguments when second argument is constant
3580 and SPEED >= SPACE. In other cases a specialized version is
3582 * bug fix: using obsoleted structure instances with TYPEP and
3583 generic functions now signals a sensible error.
3584 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
3585 (reported by Kristoffer Kvello)
3586 * bug fix: backtrace construction is now more careful when making
3587 lisp-objects from pointers on the stack, to avoid creating bogus
3588 objects that can be seen by the GC.
3589 * bug fix: defaulting of values in contexts expecting more than 7
3590 variables now works on x86-64. (reported by Christopher Laux)
3591 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
3593 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
3594 as the property-list of a symbol.
3595 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
3596 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
3597 situations requested, are once again file-compileable. (reported
3600 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
3601 * MOP improvement: support for user-defined subclasses of
3602 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
3603 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
3604 the expansion of DEFMETHOD, is responsible for generating a form
3605 which creates a list of specializers when evaluated. Additional
3606 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
3607 debugging and introspective support.
3608 * minor incompatible change: the (unsupported) spinlock interface
3609 has changed: free spinlock now has the value NIL, and a held spinlock
3610 has the owning thread as its value.
3611 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
3612 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
3614 * enhancement: name of a socket-stream is now "a socket" instead of
3615 "a constant string".
3616 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
3617 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
3618 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
3619 for generic functions. (Thanks to Tobias C. Rittweiler)
3620 * optimization: bignum printing speed has been improved by 20-40%
3621 (depending on the bignum size.)
3622 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
3624 * bug fix: the cache used by the CLOS to store precomputed effective
3625 methods, slot offsets, and constant return values is now thread and
3627 * bug fix: generic function dispatch function updating is now thread
3628 and interrupt safe (in the sense that the known issues have been
3630 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
3631 * bug fix: interning EQL-specializers is now thread and interrupt safe.
3632 * bug fix: asdf systems with dependencies to the SB-POSIX or
3633 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
3634 * bug fix: interrupt safety of applicable method computation has been
3637 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
3638 * new contrib: sb-cover, an experimental code coverage tool, is included
3639 as a contrib module.
3640 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
3641 significantly faster.
3642 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3643 produce more efficient code on x86-64 if the compiler can determine
3644 that (+ INDEX <constant>) does not require a bounds check and FOO
3645 has an element type at least 8 bits wide.
3646 * enhancement: a new, experimental synchronous timeout facility is
3647 provided. Refer to SB-SYS:WITH-DEADLINE for details.
3648 * enhancement: when a symbol name conflict error arises, the
3649 conflicting symbols are always printed with a package prefix.
3650 (thanks to Kevin Reid)
3651 * enhancement: stepping is now once again supported on the SPARC and
3652 MIPS platforms. (It is also now more likely to work on CheneyGC
3654 * enhancement: sb-sprof can now also track and report accurate call
3656 * bug fixes: the treatment of non-standard subclasses of
3657 SB-MOP:SPECIALIZER is more correct.
3658 * incompatible change: PURIFY no longer copies the data from the
3659 dynamic space into the static and read-only spaces on platforms
3660 that use the generational garbage collector
3661 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
3663 * bug fix: GC race condition occasionally resulting in crashes with
3664 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
3666 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
3668 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
3669 a STYLE-WARNING to be signalled (regression from 1.0.4.)
3670 * bug fix: an asynchronous interrupt could previously leave the
3671 system running with GC inhibited.
3672 * bug fix: a DECLARE form evaluated at top-level now causes an error
3673 rather than silently (or verbosely) returning NIL.
3674 * bug fix: trying to dissassemble functions compiled at high DEBUG could
3675 result in a error being signalled due to source form lookup errors.
3676 (reported by Peter Graves)
3678 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
3679 * incompatible change: removed writer methods for host-ent-name,
3680 host-ent-addresses -- changing the values did not update the DNS
3682 * minor incompatible change: changed experimental JOIN-THREAD interface
3683 * documentation: the manual now lists reader and writer methods
3684 in class slot documentation sections. (thanks to Richard M Kreuter)
3685 * documentation: unwinding from asyncronous events has been
3686 documented as unsafe.
3687 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
3688 in multithreaded application code.
3689 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
3690 platforms. (thanks to James Anderson for the optimization hint)
3691 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
3693 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
3694 variants no longer cons.
3695 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
3696 their NOT- variants no longer cons.
3697 * optimization: EQUAL hash tables no longer use SXHASH for objects
3698 of all data types, but instead use an EQL hash for types for which
3699 EQUAL is the same as EQL.
3700 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
3701 are significantly faster.
3702 * optimization: new STRING-OUTPUT-STREAM implementation is much
3703 faster for large outputs and conses 30% less on average.
3704 * enhancement: XREF information is now collected for references made
3705 to global variables using SYMBOL-VALUE and a constant argument.
3706 * enhancement: SIGINT now causes a specific condition
3707 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
3708 * bug fix: FILE-POSITION used to signal an error in some cases where
3709 ANSI requires it to return NIL.
3710 * bug fix: ADJUST-ARRAY is now interrupt-safe.
3711 * bug fix: adding and removing fd-handlers is now interrupt-safe.
3712 * bug fix: inlined calls to C now ensure 16byte stack alignment on
3714 * bug fix: bad type declaration in the CLOS implementation has
3715 been fixed. (reported by James Anderson)
3716 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
3717 (thanks to Lutz Euler)
3718 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
3719 required by the CLHS. (reported by Samium Gromoff)
3720 * bug fix: dead unbound variable references now signal an error.
3721 (reported by Marco Monteiro)
3722 * bug fix: / with an unused value was being deleted in safe code.
3723 (thanks to Marco Monteiro and Kevin Reid)
3724 * bug fix: number of characters that can be written onto a single
3725 line in a file is unlimited.
3726 * bug fix: some GC deadlocks caused by asynchronous interrupts have
3727 been fixed by inhibiting interrupts for when GC is disabled.
3728 * bug fix: some interrupt safety issues with GETHASH, (SETF
3729 GETHASH), CLRHASH and REMHASH have been fixed.
3730 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
3731 specifier no longer causes infinite recursion.
3732 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
3733 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
3734 * bug fix: an &environment argument with the correct variable information
3735 is passed to macros that are expanded during byte compilation.
3736 (reported by Samium Gromoff)
3737 * bug fix: a logic error was causing the hash function for bignums to
3738 have excessive amounts of collisions. (reported by Faré Rideau)
3739 * bug fix: modifying the contents of an array could change the return
3740 value of SXHASH on that array, which is only allowed for strings
3741 and bit vectors. (bug introduced in 0.9.16)
3742 * improvement: the x86-64/darwin port now passes all tests (except
3743 for the debugger tests) but should still be considered
3744 experimental until this is fixed.
3745 * improvement: a style-warning is signaled for CASE (etc) clauses with
3746 duplicate keys. (thanks to Kevin Reid)
3747 * improvement: macos/x86 and macos/x86-64 now use mach exception
3748 handlers for dealing with illegal instructions (for trapping and
3749 error handling) and memory protection violations (for GC).
3751 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
3752 * new platform: experimental support for x86-64/darwin (MacOS).
3753 * incompatible change: the thread-safe (on most platforms) getaddrinfo
3754 and getnameinfo sockets functions are used instead of gethostbyaddr
3755 and gethostbyname, on platforms where the newer functions are available.
3756 As a result, the ALIASES field of HOST-ENT will always be NIL on these
3758 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
3759 don't print the startup banner, but behave as if --noinform was passed
3760 as a command line argument. (thanks to Kevin Reid)
3761 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
3762 * optimization: code using alien values with undeclared types is much faster.
3763 * optimization: the compiler is now able to open code SEARCH in more cases.
3764 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
3765 * bug fix: using standardized COMMON-LISP special variables as loop
3766 variables no longer signals bogus package lock violations. (reported
3768 * bug fix: declaring local loop variables to be of a range-limited type
3769 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
3770 (reported by Andras Simon)
3771 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
3772 bugs remain on x86-64.)
3773 * bug fix: the #= and ## reader macros now interact reasonably with
3774 funcallable instances.
3775 * bug fix: type-checks for function arguments were compiled using the
3776 compiler policy settings of the wrong lexical environment (in 1.0.2
3778 * bug fix: SHADOW accepts characters as string designators, as required
3779 by the spec (thanks to Eric Marsden)
3780 * bug fix: fixed GC safety issues when foreign functions are called with
3781 non-base strings as arguments
3782 * bug fix: more consistent error output for fatal-compiler-warnings, like
3784 * bug fix: functions with proper names were showing up as NIL in
3785 backtraces (reported by Edi Weitz, regression in 1.0.2)
3787 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
3788 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
3789 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
3790 produce more efficient code on the x86 if the compiler can determine
3791 that (+ INDEX <constant>) does not require a bounds check and FOO
3792 has an element type at least 8 bits wide.
3793 * bug fix: references to undefined variables are handled the same way
3794 in toplevel forms as in the normal compiler
3795 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
3797 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
3798 (thanks to Jon Buller)
3799 * improvement: faster compilation times for complex functions
3800 * improvement: added readlink support to SB-POSIX (thanks to Richard
3803 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
3804 * improvement: experimental support for mach exception handling on
3805 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
3807 * improvement: support for GBK external format.
3808 (thanks to Chun Tian (binghe))
3809 * improvement: the debugger now displays variables that have been closed
3810 over, in code compiled with (DEBUG 2) or higher
3811 * improvement: support for executable cores on NetBSD (thanks to
3813 * new feature: added a RESTART-FRAME debugger command
3814 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
3815 be used to provide an implementation for FILE-POSITION on Gray streams
3816 (thanks to Eric Marsden)
3817 * new feature: add syslog, openlog and closelog support to SB-POSIX
3818 (thanks to Richard Kreuter)
3819 * optimization: the function call overhead in code compiled with
3820 a high DEBUG optimization setting is significantly
3821 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
3822 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
3823 (thanks to Tony Martinez)
3824 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
3825 evaluated once (reported by Kevin Reid)
3826 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
3827 works again (thanks to Kilian Sprotte)
3828 * bug fix: an error is signaled for tagbodies with duplicate tags
3829 (thanks to Stephen Wilson)
3830 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
3831 * bug fix: Win32 port can now handle foreign code unwinding Lisp
3832 stack frames from alien callbacks.
3833 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
3834 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
3835 65k pages (thanks to David Woodhouse)
3836 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
3838 changes in sbcl-1.0.1 relative to sbcl-1.0:
3839 * new platform: FreeBSD/x86-64, including support for threading.
3840 * new feature: the compiler stores cross-referencing information
3841 about function calls (who-calls), macroexpansion (who-macroexpands)
3842 and special variables (who-binds, who-sets, who-references) for code
3843 compiled with (< SPACE 3). This information is available through the
3844 sb-introspect contrib.
3845 * new feature: users may subclass SEQUENCE, and have instances of
3846 these classes interoperate with standard Common Lisp functions if
3847 a number of methods are defined. (This feature is experimental
3848 and the interface subject to change based on feedback from SBCL
3849 users and the general community)
3850 * improvement: sb-sprof traces call stacks to an arbitrary depth on
3851 x86/x86-64, rather than the previous fixed depth of 8
3852 * improvement: another pthread back-end of mutex "pthread-futex".
3853 * bug fix: non-ascii command-line arguments are processed correctly
3854 (thanks to Yaroslav Kavenchuk)
3855 * bug fix: non-required arguments were not passed correctly when a method
3856 defined using DEFMETHOD was called from a mop-generated method using
3857 CALL-NEXT-METHOD (reported by Pascal Costanza)
3858 * bug fix: recursion is now permitted in accessors through
3859 SLOT-UNBOUND. (reported by Pascal Costanza)
3860 * bug fix: an error was signaled at startup if the HOME environment
3861 variable was defined, but had an empty value (reported by Peter Van Eynde)
3862 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
3863 signal a PROGRAM-ERROR, not a BUG.
3864 * bug fix: SB-POSIX:READDIR works when built with large file support.
3865 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
3867 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
3868 for better automatic indentation support. (thanks to Matt Pillsbury)
3869 * optimization: loading generic functions no longer takes O(n^2) time,
3870 proportional to the amount of methods in the generic function
3871 (reported by Todd Sabin and Jeremy Brown)
3872 * optimization: the FIND and POSITION family of sequence functions
3873 are significantly faster on arrays whose element types have been
3875 * improvements to the Windows port:
3876 ** Intermittent heap corruption problems have been fixed. (thanks
3877 to Alastair Bridgewater)
3878 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
3880 ** Lisp is able to unwind foreign exception frames from alien
3881 callbacks. (thanks to Alastair Bridgewater)
3883 changes in sbcl-1.0 relative to sbcl-0.9.18:
3884 * improvement: experimental support for threading on FreeBSD/x86.
3885 (thanks to NIIMI Satoshi)
3886 * improvement: runtime option --dynamic-space-size can be used
3887 to set the size of the dynamic space reserved on startup.
3888 * improvement: floating point modes in effect are now saved in
3889 core, and restored on startup.
3890 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
3891 startup, not time since first call to GET-INTERNAL-REAL-TIME.
3892 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
3893 threads are not running after *SAVE-HOOKS* have run.
3894 * improvement: writes to CLOS instance slots are type-checked in code
3895 compiled with (SAFETY 3)
3896 * improvement: floating-point exception handling on FreeBSD (thanks to
3898 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
3899 (thanks to Zach Beane)
3900 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
3902 * improvement: added support for the Shift-JIS external format.
3903 (contributed by NIIMI Satoshi)
3904 * improvement: callbacks are supported on Linux/PPC. (thanks to
3906 * bug fix: compiler bug triggered by a (non-standard) VALUES
3907 declaration in a LET* was fixed. (reported by Kaersten Poeck)
3908 * bug fix: file compiler no longer confuses validated and already
3909 dumped structurres. (reported by Kaersten Poeck)
3910 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
3911 fill-pointer signals a type-error as required. (thanks to
3913 * bug fix: disassemly of funcallable instances works.
3914 * bug fix: single stepping on PPC.
3915 * bug fix: fix thread-safety problems in the type system (generally
3916 manifesting as nonsensical errors like "STRING is a bad type specifier
3917 for sequences" or "The value 1 is not of type FIXNUM")
3918 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
3919 (reported by Josip Gracin)
3920 * bug fix: an error is signaled for attempts to displace arrays with
3921 incompatible element types (thanks to Mario Mommer)
3922 * bug fix: more correct handling of wide characters in debug info
3923 (bug reported by Attila Lendvai and fixed by Juho Snellman)
3924 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
3925 and don't cause extra consing
3926 * optimization: MAP and MAP-INTO are significantly faster on vectors
3927 whose elements types have been declared.
3928 * Improvements to SB-SPROF:
3929 ** Support for allocation profiling
3930 ** Reduced profiling overhead, especially for long profiling runs
3931 * Improvements to the Windows port:
3932 ** floating point exceptions are now reported correctly.
3933 ** stack exhaustion detection works partially.
3934 ** more accurate GET-INTERNAL-REAL-TIME.
3935 ** better RUN-PROGRAM behaviour in case of errors in the child
3937 ** PROBE-FILE now simplifies pathnames correctly.
3938 ** DIRECTORY now works correctly with :WILD-INFERIORS.
3939 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
3940 1st 1970 (although time timezone data will be unreliable).
3941 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
3943 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
3944 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
3945 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
3947 * bug fix: two potential GC deadlocks affecting threaded builds.
3948 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
3949 returns T (reported by Anton Kazennikov)
3950 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
3951 with non-variable places
3952 * bug fix: remove a race condition in the setting of
3953 funcallable-instance functions, this should make threaded CLOS
3954 code more stable against memory faults.
3955 * bug fix: corruption of specials when unbinding is interrupted by an
3956 asynchronous unwind (reported by Hannu Koivisto)
3957 * improvement: the debugger will now also display local variables that
3958 are only used once, for code compiled with a DEBUG optimization quality
3961 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
3962 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
3963 * incompatible change: External-format support for FFI calls. The
3964 SB-ALIEN:C-STRING no longer implies an ASCII
3965 external-format. Instead the string is subject to external-format
3966 conversion. Additionally return values of type SB-ALIEN:C-STRING
3967 are by default of type (SIMPLE-ARRAY CHARACTER), not
3968 SIMPLE-BASE-STRING. For an alien type that behaves like the old
3969 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
3970 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
3971 * incompatible change: SB-EXT package no longer contains the
3972 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
3973 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
3975 * incompatible change: the single-stepper is no longer available
3976 on Alpha, Mips and Sparc platforms.
3977 * minor incompatible change: the direct superclasses of
3978 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
3979 not (STANDARD-OBJECT FUNCTION). This makes the
3980 class-precedence-lists of GENERIC-FUNCTION and
3981 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
3983 * minor incompatible change: the default stream external format on
3984 non-unicode SBCL is no longer detected from the locale, but is always
3986 * new feature: Add a version of evaluator that uses an interpreter instead
3987 of the compiler. EVAL still uses the compiler by default, to switch it
3988 to use the interpreter, set the value of the variable
3989 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
3990 * minor incompatible change: the single-stepper REPL has been merged
3991 with the normal debugger (see the "Stepping" heading of the debugger help
3992 for more details). The debugger command STEP will no longer switch
3993 to the single-stepper REPL.
3994 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
3995 for a type now works.
3996 * bug fix: loading of default sysinit file works. (thanks to Leonid
3998 * bug fix: better detection of circularities in the file-compiler.
3999 (reported by Marco Monteiro)
4000 * bug fix: the CL pathname functions now work with files that have
4001 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
4002 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
4003 systems with Unix98 pty semantics.
4004 * bug fix: ASDF-INSTALL will now work with bsd tar.
4005 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
4007 * bug fix: timers expiring in dead threads no longer cause a
4008 type-error (reported by Paul "Nonny Mouse").
4009 * bug fix: thanks to more lightweight single-stepper instrumentation,
4010 code compiled with (DEBUG 3) will compile and execute significantly faster,
4011 and will have more accurate type-inferencing than before
4012 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
4013 whose bindings are modified
4014 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
4015 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
4016 ** replace dummy implementations of CL:MACHINE-INSTANCE and
4017 CL:SOFTWARE-VERSION with proper version
4019 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
4020 * feature: implemented the READER-METHOD-CLASS and
4021 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
4022 as specified by AMOP.
4023 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
4025 * optimization: faster LOGCOUNT implementation on x86 and x86-64
4026 (thanks to Lutz Euler)
4027 * optimization: hashing of general arrays and vectors has been
4028 improved. (reported by Any Fingerhut)
4029 * enhancement: SB-INTROSPECT is now able to find definitions of
4030 profiled functions. (thanks to Troels Henriksen)
4031 * enhancement: compiler-macro expansion applies now to FUNCALL forms
4032 as well, allowing compiler-macros for SETF-functions to expand.
4033 * enhancement: step-instrumentation no longer wraps known
4034 single-value functions with multiple-value context, allowing
4035 better type inference.
4036 * fixed bug #337: use of MAKE-METHOD in method combination now works
4037 even in the presence of user-defined method classes. (reported by
4038 Bruno Haible and Pascal Costanza)
4039 * fixed bug #339(c): if there are applicable methods not part of any
4040 long-form method-combination group, call INVALID-METHOD-ERROR.
4041 (reported by Bruno Haible)
4042 * fixed bug #361: the :FUNCTION initarg in the protocol for
4043 initialization of methods can now be used to override
4044 internally-produced optimized functions. (reported by Bruno
4046 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
4047 system-provided lambda expression no longer cause warnings about
4048 unbound #:|pv-table| symbols.
4049 * bug fix: improved the handling of type declarations and the
4050 detection of violations for keyword arguments with non-constant
4052 * bug fix: potentially erronous calls to PATHNAME and
4053 MERGE-PATHNAMES were being flushed in some cases.
4054 (reported by Richard Kreuter)
4055 * bug fix: compiled calls to TYPEP were mishandling obsolete
4056 instances. (reported by James Bielman and Attila Lendvai)
4057 * bug fix: format strings with ~> without matching ~< no longer
4058 trigger an AVER, but signal an understandable error instead.
4059 (reported by Antonio Martinez)
4060 * bug fix: specifying an output-file without a pathname-type for
4061 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
4062 of input-file instead of "fasl". (reported by Robert Dodier)
4063 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
4064 (reported by James Y Knight).
4065 * bug fix: compiler-macros-function did not consider the environment
4066 argument for shadowing by local functions.
4067 * bug fix: compiler-macros expansion was inhibited by local INLINE
4069 * bug fix: inline expansions of known functions were subject to
4070 step-instrumentation in high debug policies, leading to problems
4071 with type-inference.
4072 * bug fix: compiler failed to differentiate between different CONS
4073 types in some cases.
4074 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
4075 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
4076 * bug fix: #368: incorrect use of expressed vs. upgraded array
4078 * bug fix: #306a: more precise unions of array types.
4079 * thread-safety improvements:
4080 ** CONDITION-WAIT could return early on Linux, if the thread was
4081 interrupted and subsequently continued with SIGCONT.
4082 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
4084 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
4085 * added support for the ucs-2 external format. (contributed by Ivan
4087 * minor incompatible change: pretty printing of objects of type
4088 (cons symbol) is, in the default pprint-dispatch-table, now
4089 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
4091 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
4092 called later in a class's lifetime, possibly as late as when the
4093 first instance of the class is created. Previously,
4094 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
4095 class became finalizeable.
4096 * fixed bug: FILE-POSITION sometimes returned inconsistent results
4097 for multibyte external-format streams. (thanks to "vbzoli")
4098 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
4099 with :ALLOCATION :CLASS inherited from superclasses of the
4101 * fixed bug: anonymous classes can now be created using the :NAME
4102 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
4103 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
4104 * fixed bug: core-files saved with :EXECUTABLE T can again be
4105 executed when SBCL_HOME isn't set. (reported by James Knight)
4106 * fixed bug: toplevel LOCALLY forms with declarations could
4107 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
4108 * fixed bug: printing from several different threads using different
4109 values of *print-case* could cause invalid output, due to
4110 some internal special variables of the printer not being bound
4111 thread-locally (reported by Max Mikhanosha)
4112 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
4113 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
4114 (reported by Pascal Costanza)
4115 * fixed bug: FINALIZE-INHERITANCE is called from
4116 REINITIALIZE-INSTANCE on classes when the class has previously
4117 been finalized, as required by AMOP.
4118 * minor code generation optimizations:
4119 ** better register allocation in CLOS dispatching functions
4120 ** overflow detection when coercing signed bytes to fixnums on x86-64
4121 ** is now implemented with one IMUL instruction instead of three shifts
4122 ** more efficient bit-vector access on x86 and x86-64
4123 ** more efficient access to raw structure slots on x86 and x86-64
4124 * fixed some bugs revealed by Paul Dietz' test suite:
4125 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
4126 return its argument.
4128 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
4129 * feature: thread support on Solaris/x86, and experimental thread support
4131 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
4133 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
4134 default method for SLOT-UNBOUND.
4135 * minor incompatible change: prevent the user from specializing the
4136 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
4137 somewhat counter to the intent of the protocol, I (CSR) think, and
4138 additionally it just doesn't work in SBCL as currently
4139 implemented, thanks to optimizations (that are always valid for
4140 the other three SLOT-VALUEish functions, but not for the setter).
4141 * minor incompatible change: the :SB-LDB feature is now enabled by
4142 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
4143 the low-level debugger.
4144 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
4145 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
4146 down to an SB-SYS:FD-STREAM, allowing direct communication in
4147 more cases. Temporary files and pipes are still used as a fallback
4149 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
4150 on the non-reentrant C functions localtime(3) and gmtime(3).
4151 * bug fix: global optimization policy was not visible in LOCALLY and
4153 * bug fix: class objects can be used as specializers in methods.
4154 (reported by Pascal Costanza)
4155 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
4156 with a type error. (reported by blitz_ on #lisp)
4157 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
4158 failed with a type error. (reported by Pascal Bourguignon)
4159 * bug fix: merging pathnames against defaults with :DIRECTORY
4160 starting with '(:RELATIVE :BACK) should preserve the :BACK.
4161 (reported by James Y Knight)
4162 * bug fix: saving large (>2GB) cores on x86-64 now works
4163 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
4164 constant index and a (simple-array (signed-byte 32)) array
4165 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
4166 error (patch by Robert J. Macomber)
4167 * feature: TIME now displays the amount of run-time spent in GC
4168 * bug fix: The debugger now does a better job of respecting
4169 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
4170 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
4171 workaround for bug 403.)
4172 * bug fix: floating point exception handling now works on FreeBSD
4173 (thanks to NIIMI Satoshi)
4174 * fixed some bugs revealed by Paul Dietz' test suite:
4175 ** MISC.641: LET-conversion were not supposed to work in late
4177 * improvements to the Win32/x86 port:
4178 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
4179 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
4181 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
4182 * new feature: source path information is generated for macro-expansion
4183 errors for use in IDE's like Slime (thanks to Helmut Eller)
4184 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
4185 * bug fix: compiler does not loop forever on an invalid type in
4187 * improvement: compilation of most CLOS applications is significantly
4189 * optimization: added a limited bytecode compiler for simple toplevel
4190 forms, speeding up compilation and FASL loading
4191 * bug fix: the statistical profiler now properly distinguishes anonymous
4194 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
4195 * minor incompatible change: in sbcl-0.9.11 (but not earlier
4196 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
4197 into subclasses of the finalized class. Now user calls to
4198 FINALIZE-INHERITANCE finalize just the one class, and calls by the
4199 system return before any subclasses are finalized.
4200 * minor incompatible change: The reader no longer ignores errors
4201 regarding non-existent packages in #+ and #- feature tests.
4202 * new feature: command line options --no-sysinit, --no-userinit to
4203 inhibit loading the corresponding init files
4204 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
4205 for sending data through UDP sockets (thanks to François-René Rideau)
4206 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
4207 error is signalled instead (thanks to François-René Rideau)
4208 * minor incompatible change: Error signalling behaviour of lexical
4209 operations violating package locks has changed slightly. Refer to
4210 documentation on package locks for details.
4211 * enhancement: EVAL can process IF-expressions without resorting to the
4213 * bug fix: Some operations involving SIN, COS, or TAN weren't being
4214 constant-folded properly due to missing out-of-line functions.
4215 (reported by Mika Pihlajamäki)
4216 * bug fix: LISTEN sometimes returned T even in cases where no data was
4217 immediately available from the stream
4218 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
4219 were reversed. (reported by Levente Mészáros)
4220 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
4221 when given a vector displaced to an adjustable array. (reported
4223 * bug fix: derivation of float boundaries from numbers outside the
4224 appropriate float range (reported by John Wiseman)
4225 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
4227 * bug fix: precomputing cache entries for generic functions with
4228 some subclasses of specializers as yet invalid does not attempt to
4229 fill a cache line with a negative offset. (reported by Levente
4231 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
4232 allow condition class objects as arguments to DOCUMENTATION and
4233 (SETF DOCUMENTATION); only find and set documentation for
4234 structure names for the STRUCTURE doc-type. (suggested by Gary
4236 * improvements to the Win32/x86 port:
4237 ** (user-homedir-pathname) and default initialization file
4238 locations now know about the user's "Documents and Settings"
4239 directory (thanks to Yaroslav Kavenchuk)
4240 ** run-program is implemented (thanks to Mike Thomas)
4241 ** sockets support (thanks to Timothy Ritchey)
4242 ** better backtrace support (thanks to Alastair Bridgewater)
4243 ** sb-grovel supported
4244 ** asdf-install and sb-posix work somewhat
4245 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
4246 * improvements to the Solaris/x86 port:
4247 ** works on Solaris 11/Solaris Express
4248 ** floating-point exception handling support
4249 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
4250 * fixed some bugs revealed by Paul Dietz' test suite:
4251 ** REMOVE-METHOD returns its generic function argument even when
4252 the method is not one of the generic functions' methods.
4253 ** objects declared as MEMBER types can be admissible arguments to
4254 structure accessors.
4255 ** printing characters should simply be printed by the FORMAT ~:C
4257 ** compiler failure when compiling functions with hairy constant
4258 defaults for optional parameters.
4259 ** compiler produces wrong code when MAYBE-INLINE-expanding a
4260 function, which is already optimized.
4262 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
4263 * new platform: experimental support for SBCL x86/Darwin, including
4264 MacOS X 10.4.5 on Intel.
4265 * new feature: Unicode character names are now known to the system
4266 (through CHAR-NAME and NAME-CHAR).
4267 * new feature: the filesystem location of SBCL's core file is
4268 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
4269 * minor incompatible change: the contrib modules SB-POSIX and
4270 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
4271 this change is to make it easier to distribute
4272 location-independent binaries.
4273 * bug fix: as implied by AMOP, standardized classes no longer have
4274 slots named by external symbols of public packages. (reported by
4276 * optimization: calling functions via constant symbols -- as in
4277 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
4278 via the function object as in (FUNCALL #'FOO).
4279 * optimization: on x86 and x86-64, the calling convention for the
4280 case of dealing with an unknown number of values has been altered
4281 to be friendlier to the prediction heuristics implemented,
4282 particularly with reference to CALL and RET pairing. (thanks to
4283 Alastair Bridgewater)
4284 * optimization: on x86, the code for access to thread-local symbol
4285 values and binding/unbinding of thread-local symbols is smaller.
4286 (thanks to Alastair Bridgewater)
4287 * enhancement: CONSTANTP is now able to determine constantness of
4288 more complex forms, including calls to constant-foldable standardized
4289 functions and some special forms beyond QUOTE.
4290 * fixed bug: occasional GC crashes on Solaris/x86
4291 * optimization: x86-64 supports stack allocation of results of simple
4292 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
4293 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
4294 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
4295 (thanks to James Knight)
4296 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
4297 by the standard (thanks to Stephen Compall)
4299 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
4300 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
4301 be used for bundling the runtime and the core file into one
4302 executable binary. This feature is not currently supported on all SBCL
4303 platforms. (thanks to James Bielman and NIIMI Satoshi)
4304 * new feature: a generational or ephemeral garbage collector is now
4305 the default on the PowerPC platform (both Linux and Darwin). The
4306 old Cheney (stop and copy) collector is a build-time option.
4307 (thanks to Cyrus Harmon, after Raymond Toy)
4308 * minor incompatible change: the method by which SBCL finds its
4309 contributed modules has changed; it no longer relies on symbolic
4310 links from an $SBCL_HOME/systems directory, but searches directly
4311 in the subdirectories of $SBCL_HOME.
4312 * enhancement: the dynamic heap size on the Linux/PPC platform is
4313 markedly larger, even using the older Cheney garbage collector.
4314 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
4315 certain complicated string types. (reported by Gary King)
4316 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
4317 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
4318 * fixed bug: DOCUMENTATION on structures no longer signals an
4319 error if no structure type of the right name exists. (reported by
4321 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
4322 applicable non-standard primary or :AROUND method on
4323 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
4324 no longer cause unbound variable errors. (reported by Kevin Reid)
4325 * fixed bug: metacircle resolution in cases where methods have slots
4326 added before the slots from STANDARD-METHOD. (reported by Jean
4328 * fixed bug: the Power PC assembly code for calling into lisp
4329 sometimes computed its return address wrongly (depending on the
4330 15th bit of the address, fixed at link time). This used to
4331 manifest itself in a segmentation violation while building PCL.
4332 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
4333 many others over the years)
4334 * fixed bug: ROOM no longer reports silly numbers for stack usage if
4335 the stack pointer (treated as a signed integer) is negative.
4336 (thanks to Peter van Eynde)
4338 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
4339 * new platform: experimental support for the Windows operating
4340 system has been added. (thanks to Alastair Bridgewater)
4341 * fixed several bugs in and robustified the PPC FFI (including
4342 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
4343 * bug fix: allow non-simple string symbol names (reported by Paul
4345 * bug fix: interrupt handling on NetBSD (thanks to Richard M
4347 * bug fix: saving a core corrupted callbacks on x86/x86-64
4348 * bug fix: closed a loophole in metacircularity detection and
4349 grounding in the PCL implementation of CLOS.
4350 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
4351 (reported by tomppa on #lisp)
4352 * bug fix: clear the direction flag on Lisp -> C transitions, as
4353 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
4354 (reported by Andrej Grozin and Hendrik Maryns)
4355 * optimization: major improvements to GC efficiency on GENCGC platforms
4356 * optimization: faster implementation of EQUAL
4357 * optimization: emit more efficient opcodes for some common
4358 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
4359 * optimization: several other minor code-generation improvements on x86-64
4360 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
4362 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
4363 * minor incompatible change: (SETF CLASS-NAME) and (SETF
4364 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
4365 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
4366 by ANSI as a generic function, and for consistency (SETF
4367 GENERIC-FUNCTION-NAME) is treated likewise.
4368 * fixed bug #233.b: make constraint propagation notice when a variable
4369 value is changed after it is referenced but before it is used
4370 * fixed bug #296: no more arbitrary behaviour from filenames with
4371 odd characters as --load arguments. (reported by Adam Warner)
4372 * fixed bug #390: :CHARACTER-SET pathname components now work as
4373 expected. (reported by Tim Daly Jr)
4374 * fixed bug #391: complicated :TYPE intersections in slot
4375 definitions no longer cause an error in PCL internals.
4376 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
4377 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
4378 returning the number of octets which would be written to the
4379 file-stream. (thanks to Robert J. Macomber)
4380 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
4381 arguments to the internal stream functions. (thanks to David
4383 * bug fix: stack exhaustion is now handled on the x86/SunOS
4384 platform. (thanks to Daisuke Homma)
4385 * bug fix: more accurate ROOM results on GENCGC platforms
4386 * optimization: improved type inference for arithmetic-for
4387 index variables in LOOP
4388 * optimization: faster floating-point SQRT on x86-64
4389 * fixed some bugs revealed by Paul Dietz' test suite:
4390 ** DOCUMENTATION returns NIL instead of "" for method combinations
4391 that don't have a docstring
4393 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
4394 * minor incompatible change: (SETF CLASS-NAME) and (SETF
4395 GENERIC-FUNCTION-NAME) are no longer generic functions, and
4396 therefore are not customizeable by user code (as seems to be at
4397 least permitted and maybe required by AMOP). As a consolation,
4398 however, the SBCL implementation of these functions now calls
4399 REINITIALIZE-INSTANCE as specified by AMOP.
4400 * bug fix: slot-definition documentation is propagated as per ANSI
4401 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
4402 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
4403 argument, as do eslotd initialization methods. (from Pascal
4404 Costanza's "Closer" project)
4405 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
4406 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
4408 * bug fix: it is now possible to have more than one subclass of
4409 STANDARD-GENERIC-FUNCTION without causing stack overflow.
4410 (reported by Bruno Haible, Pascal Costanza and others)
4411 * bug fix: the dependent update protocol now works for generic
4412 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
4413 and Pascal Costanza)
4414 * bug fix: condition-class instances corresponding to
4415 DEFINE-CONDITION forms are now created eagerly. (reported by
4416 Kalle Olavi Niemitalo on comp.lang.lisp)
4417 * bug fix: floating point printing is more accurate in some
4418 circumstances. (thanks to Simon Alexander)
4419 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
4420 merged with *DEFAULT-PATHNAME-DEFAULTS*.
4421 * bug fix: callbacks on OS X now preserve stack-alignment.
4422 (thanks to Cyrus Harmon)
4423 * enhancement: the x86-64 disassembler is much better at
4424 disassembling SSE instructions. (thanks to Lutz Euler)
4425 * enhancement: CHECK-TYPE on a variable now allows type-inference
4426 (thanks to Vincent Arkesteijn)
4427 * optimization: improved performance of EUC-JP external format.
4428 (thanks to NIIMI Satoshi)
4429 * optimization: performance improvements to IO on file streams of
4430 :ELEMENT-TYPE CHARACTER
4431 * optimization: much faster memory allocation on x86-64
4432 * optimization: faster garbage collections (latency and throughput)
4434 * optimization: faster bignum subtraction and division on x86 and x86-64
4435 (thanks to Lutz Euler)
4436 * optimization: more accurate type-inference for loops that use a
4437 floating point index variable or a negative step.
4439 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
4440 * bug fix: add a workaround to SBCL looping infinitely at startup on
4441 Linux kernels with apparently buggy implementations of personality().
4442 (thanks to Svein Ove Aas)
4443 * bug fix: Unicode symbols are correctly printed in LDB backtraces
4444 (thanks to David Lichteblau)
4445 * bug fix: local bindings shadow global symbol macros for
4446 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
4447 * optimization: non-open coded uses of numeric comparison operators
4448 (e.g. >) no longer cons when called with more than one parameter
4449 on platforms supporting dynamic-extent allocation.
4450 * enhancement: saving cores with foreign code loaded is now supported
4451 on MIPS/Linux in addition to the previously supported platforms.
4452 * bug fix: FIND-RESTART now tests for activity, not applicability when given
4453 a restart object as identifier. (reported by Helmut Eller for CMUCL)
4454 * bug fix: division by zero in sb-sprof when no samples were collected
4455 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
4456 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
4457 (thanks to Alexander Kjeldaas)
4458 * new feature: ignoring the return values of destructive functions
4459 like NREVERSE signals a compile-time style-warning.
4460 (thanks to Kevin Reid)
4461 * new feature: the alignment of alien structure fields can be
4462 explicitly specified. (thanks to Cyrus Harmon)
4463 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
4464 and dump core on SIGQUIT
4466 ** incompatible change: threads do not inherit values of specials
4467 from their parents (see manual)
4468 ** bug fix: threads stacks belonging to dead threads are freed by the
4469 next exiting thread, no need to gc to collect thread stacks anymore
4470 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
4471 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
4472 ** bug fix: dynamic variable and thread start related gc lossage
4473 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
4475 * fixed some bugs revealed by Paul Dietz' test suite:
4476 ** SUBTYPEP is slightly more accurate on heinously complicated
4477 CONS types where some of the members have uncertain (in the
4478 NIL, NIL sense) type relationships to each other.
4480 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
4481 no longer purified unless :PURIFY T is explicitly specified.
4482 ** Non-purified cores are significantly smaller than before
4484 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
4485 * new feature: timers based on Zach Beane's excellent timer package
4486 * added support for the following external formats: koi8-u,
4487 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
4488 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
4489 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
4490 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
4491 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
4492 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
4493 * incompatible change: a threaded SBCL will no longer revert to
4494 non-threaded mode on non-NPTL systems, but refuse to start entirely.
4495 * bug fix: interrupts are disabled until startup is complete; no
4496 more sigsegvs when receiving a signal to soon
4497 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
4499 * bug fix: add a workaround for the memory randomization features in
4500 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
4501 workaround will only be in effect on systems with the proc filesystem
4503 * bug fix: printing objects of type HASH-TABLE signals a
4504 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
4506 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
4507 have been running for over 50 days. (reported by Gilbert Baumann)
4508 * bug fix: the logic for getting names of functions gets less
4509 confused when confronded with alternate-metaclass
4510 funcallable-instances. (reported by Cyrus Harmon)
4511 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
4512 consistent, even on internal alternate-metaclass objects.
4513 * bug fix: flush closure information collected by physical
4514 environment analysis prepass before the main pass. (bug reported
4516 * bug fix: compiler pack phase does not modify a hashtable, which is
4517 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
4518 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
4519 may be expanded. (reported by Alexander <malishev> on c.l.l)
4520 * bug fix: no more style-warnings when compiling code using LAST
4521 under high-SPEED low-SPACE settings. (reported by David Wallin
4523 * fixed some incompatibilities between SBCL's MOP and the MOP
4525 ** the METAOBJECT class is now implemented;
4526 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
4527 STANDARD-OBJECT, as required;
4528 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
4529 now compatible (as required by VALIDATE-SUPERCLASS); there
4530 remains a consistency requirement over the presence or absence
4531 of the FUNCTION class in the superclass list of finalized
4532 classes; see the manual for more details;
4533 ** the :AROUND method for COMPUTE-SLOTS on
4534 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
4535 requested slot ordering.
4537 ** bug fix: parent thread now can be gc'ed even with a live
4539 ** bug fix: binding a special with PROGV to no value is not
4540 the same as that symbol not having been bound (thanks to
4542 ** bug fix: binding specials is thread safe (thanks to
4544 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
4545 and SB-SPROF do not die with 'no handler for signal XX in
4546 interrupt_handle_now(..)' anymore
4547 ** bug fix: WITH-TIMEOUT works with multiple running threads
4548 * fixed some bugs revealed by Paul Dietz' test suite:
4549 ** ENSURE-GENERIC-FUNCTION should take a method class object for
4550 the :method-class keyword argument.
4552 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
4553 * new port: the Solaris operating system on x86 processors is now
4554 mostly supported, though some rough edges in the environment
4555 remain. (thanks to Daisuke Homma)
4556 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
4557 space for its heap. (thanks to Thiemo Seufer)
4558 * optimization: SBCL on MIPS platforms now supports dynamic-extent
4559 closures. (thanks to Thiemo Seufer)
4560 * minor incompatible change: eof selects abort in the debugger.
4561 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
4562 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
4564 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
4565 deprecated, and will go away in a future revision of SBCL.
4566 * minor incompatible change: GC-ON and GC-OFF are no longer
4567 implemented with a counter, it does not matter how many times gc
4568 is switched on or off
4569 * bug fix: discriminating functions for generic function classes
4570 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
4571 make invalid assumptions about method precedence order. (reported
4573 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
4574 platforms. (thanks to Thiemo Seufer)
4575 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
4576 * bug fix: correct pathname printing with printer escaping is on.
4577 (thanks to Kevin Reid)
4578 * bug fix: complex VOP definitions in "user-space" no longer trigger
4579 package locks. (reported by Zach Beane)
4580 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
4581 for funcallable-instance functions, and is no different from
4583 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
4584 characters in the current readtable. (reported by Nicholas Neuss)
4585 * bug fix: SUBTYPEP on various CONS types returns more a more
4586 accurate acknowledgment of its certainty.
4587 * optimizations: REMOVE-DUPLICATES now runs in linear time on
4588 lists in some cases. This partially fixes bug 384.
4589 * flush all standard streams before prompting in the REPL and the
4591 * bug fix: signal handling and triggering gc do not conflict
4592 directly anymore, in particular a high frequency sb-sprof does
4593 not prevent gc from running
4594 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
4595 approximation for timezone and DST information between the
4596 universal time epoch and the smallest negative 32-bit time_t.
4597 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
4598 year 1899 so long as the encoded time is non-negative.
4599 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
4600 the correct answer for non-constant rotate amounts when performing
4601 an inline 32-bit rotation.
4603 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
4604 there is only one thread in the session
4605 ** bug fix: memory leak for streams created in one thread and
4606 written to in another
4607 ** bug fix: lockup when compiled with gcc4
4608 ** bug fix: race that allows the gc to be triggered when gc is
4610 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
4611 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
4613 ** bug fix: finished threads are gc'ed properly
4614 * fixed some bugs revealed by Paul Dietz' test suite:
4615 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
4616 has arguments with a different set of applicable methods from
4617 the orignal arguments.
4618 ** The type error thrown by MAP now has a correct expected-type
4620 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
4621 name a compiled function.
4622 ** Three MISC tests where a large bignum was improperly coerced to
4623 a float that couldn't represent that bignum during type
4624 derivation were fixed.
4625 ** SUBTYPEP can now handle types involving the negation of a
4626 list-form FUNCTION type.
4627 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
4628 as (COMPLEX (AND RATIO (NOT FIXNUM))).
4629 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
4631 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
4632 * New feature: Experimental support for bivalent streams: streams
4633 opened with :element-type :default now allow character and binary
4634 (unsigned-byte 8) I/O
4635 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
4636 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
4638 * bug fix: no more highly sporadic "couldn't check whether ~S is
4639 readable" when reading a stream and an interrupt hits in the middle
4640 of a select system call
4641 * compiler better recognizes complex arrays (reported by Eduardo
4643 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
4644 for variables on SBCL built with linkage-tables. (reported by Luis
4646 * various error reporting improvements.
4647 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
4648 (Thanks to Thiemo Seufer)
4649 * bug fix: nested reader invokations work correctly
4650 * bug fix: it is possible to have simultaneous references to foreign
4651 code and foreign data with the same name.
4653 ** added x86-64 support
4654 ** incompatible change: the threading api now works with thread
4655 objects instead of thread ids
4656 ** bug fix: threads are protected from signals and interruption when
4657 starting up or going down
4658 ** bug fix: a race where an exiting thread could lose its stack to gc
4659 ** bug fix: don't halt on infinite error in threads if possible
4660 ** fixed numerous gc deadlocks introduced in the pthread merge
4661 ** bug fix: fixed thread safety issues in read and print
4662 ** bug fix: debugger doesn't hang on session lock if interrupted at
4663 an inappropriate moment
4664 ** bug fix: run-program is now thread safe(r)
4665 ** bug fix: inner with-recursive-lock no longer releases the mutex
4666 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
4667 * fixed some bugs revealed by Paul Dietz' test suite:
4668 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
4669 EXPECTED-TYPE slots filled.
4670 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
4672 ** MAKE-CONDITION accepts classes as type-designators.
4673 ** COMPILE may never return NIL.
4674 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
4675 range before calling Unix time functions
4677 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
4678 * numerous signal handling fixes to increase stability
4679 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
4680 * minor incompatible change: we now correctly canonize default
4681 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
4682 as per the MOP, rather than the historical (INITARG INITFUNCTION
4683 INITFORM). (reported by Bruno Haible)
4684 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
4685 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
4686 for more information.
4687 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
4688 pathname is a directory pathname.
4689 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
4690 * dynamic space size on PPC has been increased to 768Mb. (thanks to
4692 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
4693 :METACLASS argument in addition to a class name. (reported by
4694 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
4695 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
4696 (reported by Bruno Haible; patch from Gerd Moellmann)
4697 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
4699 * bug fix: more cleanups to the floating point exception handling on
4700 x86-64 (thanks to James Knight)
4701 * bug fix: the compiler does not try to constant fold calls of
4702 COERCE and BIT-* functions when they return freshly constructed
4703 objects. (reported by Nikodemus Siivola and Paul Dietz)
4704 * optimization: improved the MIPS versions of generic (in the
4705 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
4706 * optimization: direct conversion of (unsigned-byte 32) to floats on
4707 the PowerPC platform.
4708 * optimization: structure instances with raw slots now use less
4709 memory, and probably show better memory locality. (thanks to
4711 * optimization: DYNAMIC-EXTENT declarations for lists and closures
4712 are treated as requests for stack allocation on the x86-64,
4713 Alpha-32, PPC and SPARC platforms.
4714 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
4715 the wrong file descriptor; implementation of SOCKET-OPEN-P.
4716 (thanks to Tony Martinez)
4718 ** gcing a dead thread can no longer lead to lockups
4719 ** threads block signals until they are set up properly
4720 ** errno is no longer shared by threads
4721 ** interrupt-thread restores the eflags register on x86
4722 ** fixed some lockups due to gc/thread interaction
4723 * fixed some bugs revealed by Paul Dietz' test suite:
4724 ** invalid dotted lists no longer raise a read error when
4725 *READ-SUPPRESS* is T
4726 ** signal an error if a symbol that names a declaration is used
4727 as the name of a type, or vice versa
4728 ** allow using the (declare (typespec var*)) abbreviation for
4729 (declare (type typespec var*)) with all type specifiers
4730 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
4731 ** always return NIL from PPRINT-POP when OBJECT is NIL
4732 ** don't signal errors when pretty-printing malformed LABELS,
4733 FLET or MACROLET forms
4734 ** declarations in a DOLIST body are also in scope for the
4736 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
4738 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
4741 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
4742 * fixed cross-compiler leakages that prevented building a 32-bit
4743 target with a 64-bit host compiler.
4744 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
4745 opened with :IF-EXISTS :OVERWRITE.
4746 * fixed bug 281: error for an invalid qualifier in a short-form method
4747 combination method is not signalled until the faulty method is called.
4748 * bug fix: iteration variable type inferrer failed to deal with open
4749 intervals. (reported by Alan Shields)
4750 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
4751 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
4752 or more runtime options were provided to the sbcl binary.
4753 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
4754 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
4755 * optimization: there's now a fast-path for fixnum arguments in the
4756 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
4757 * optimization: the code generated on x86-64 is more compact thanks
4758 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
4759 * bug fix: floating-point exception handling now partly works on
4760 x86-64. (Thanks to James Knight)
4761 * improvement to the MIPS backend from Thiemo Seufer: C-style
4762 64-bit long long arguments and return values to alien functions
4764 * fixed some bugs revealed by Paul Dietz' test suite:
4765 ** the type-error signalled from WARN has a filled-in DATUM slot.
4766 ** the type-error required when a stream is not associated with
4767 a file has the stream as its datum.
4768 ** type-errors on single-floats on x86-64 no longer have
4769 :INVALID-OBJECT as the datum
4770 ** the type-errors signalled for invalid function names now have
4771 a correct expected type
4772 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
4773 for structures defined with a :TYPE. Documentation strings for
4774 typed structures are no longer immediately discarded
4775 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
4776 broadcast streams and synonym streams. FILE-LENGTH now also works
4777 on broadcast streams.
4779 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
4780 * incompatible change: the --noprogrammer option, deprecated since
4781 version 0.7.5, has been removed. Please use the equivalent
4782 --disable-debugger option instead.
4783 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
4785 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
4786 inoperational for a while now) has been completely removed.
4787 * null lexical environments are now printed as #<NULL-LEXENV>,
4788 significantly reducing the amount of clutter in typical backtraces.
4789 * documentation on weak pointers, finalization, and after GC hooks
4790 has been added to the manual.
4791 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
4792 as other specialized array types, is much faster. SUBSEQ and
4793 COPY-SEQ on such arrays have also been sped up.
4794 * optimization: EQL is now more efficient when at least other argument
4795 is known to be of type (OR FIXNUM (NOT NUMBER)).
4796 * fixed bug: the runtime is now less vulnerable to changes in the
4797 size of the SBCL object on OS X, and virtual memory is reserved for
4798 all spaces that need to be at a fixed address.
4799 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
4800 * fixed bug: finalizers and after GC hooks that cause consing are now
4802 * fixed bug: compiler error messages and summaries are now printed to
4803 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
4804 * fixed inference of the upper bound of an iteration variable.
4805 (reported by Rajat Datta).
4806 * fixed bug 211e: calling local functions with duplicated constant
4807 keyword argument no longer causes a bogus style warning about an
4809 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
4810 ftype declaration to be disregarded. (reported by Dave Roberts)
4811 * fixed bug 373: caused by erronous compilation of references to alien
4812 variables in the runtime on ppc/darwin.
4813 * fixed bug 376: CONJUGATE type deriver.
4814 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
4815 (reported by Baughn on #lisp)
4816 * a cross-compiler bug on non-x86 platforms has been identified and
4817 fixed. (thanks to Bruno Haible)
4818 * improvements to the MIPS runtime code for increased stability.
4819 (thanks to Thiemo Seufer)
4820 * increased the maximimum compact environment size to allow
4821 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
4822 * partial workaround for bug 135: don't name the function we're
4823 calling for hairy cases of EVAL, so as not to accumulate one environment
4824 entry per call to EVAL. (reported by Kevin Reid)
4825 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
4826 * optimization: type testing for non-vector arrays should be faster.
4827 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
4829 * bug fix: setting 31st element of a bit vector to zero did not work
4831 * bug fix: redefining a class definition which failed due to a
4832 previous accessor / function clash now works (but see BUGS entry
4833 #380 for more problems in this area). (thanks to Zach Beane)
4834 * the long form of DEFINE-METHOD-COMBINATION disables method group
4835 checking when given a single method group with pattern *. (thanks
4837 * on x86 compiler supports stack allocation of results of simple
4838 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
4839 * support for building and running on Mac OS X 10.4 "Tiger" has been added
4840 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
4841 * fixed some bugs related to Unicode integration:
4842 ** the restarts for recovering from input and output encoding
4843 errors only appear when there is in fact such an error to
4845 * fixed some bugs revealed by Paul Dietz' test suite:
4846 ** MISC.549 and similar: late transformation of unsafe type
4847 assertions into derived types caused unexpected code
4849 ** SCALE-FLOAT type deriver is less wrong.
4850 ** type derivers for EXP, LOG and similar functions compute result
4851 types for complex arguments better.
4852 ** (MISC.563) CONJUGATE type deriver works for very restricted
4854 ** out-of-line type testers for character strings are available.
4855 ** EQUAL compiler transform understands specialness of objects
4857 ** accessing double-floats stored on the stack now works on x86-64.
4858 ** debugger internals could sometimes create invalid lispobjs,
4859 resulting in GC crashes.
4860 ** MISC.548: type check weakening can convert required type into
4862 ** initialization forms for bindings are not in scope of free special
4865 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
4866 * incompatible change: thread support for non-NPTL systems has
4867 been removed - locking is buggy and unreliable. A threaded
4868 SBCL build will now warn at startup and refuse to create
4869 new threads, unless futex support is detected in the kernel
4870 * incompatible change: the top level REPL now has only an ABORT
4871 restart associated with it, not TOPLEVEL and ABORT as it used to.
4872 TOP and TOPLEVEL are now available as debugger commands for
4873 returning to the top level.
4874 * incompatible change: forms evaluated in the REPL now use the
4875 global optimization policy.
4876 * incompatible change: user- and system-initialization files are
4877 no longer processed with LOAD, but by READ and EVAL; hence the
4878 global optimization policy, startup package, readtable, etc,
4880 * The .fasl file format number has been incremented because of
4881 various incompatible changes.
4882 * internal entry point details and argument counts no longer appear
4883 in backtraces unless explicitly requested by setting
4884 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
4885 * built-in and standard functions no longer have names like "top
4886 level local call to FOO".
4887 * fixed bug 32: functions defined in non-null lexical environments
4888 now have more legible printed representation
4889 * fixed bug 33: functions defined in non-null lexical environemnts
4890 are now more amenable to inspection by INSPECT.
4891 * workaround for bug 354: XEPs no longer appear in backtraces unless
4892 explicitly requested.
4893 * fixed bug: receiving the signal which results from attempting to
4894 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
4895 SIGBUS on other *BSDs) on architectures where the C stack is also
4896 the Lisp stack (x86 and x86-64) from foreign code no longer leads
4897 to debugger confusion or wild instability. (reported by Cheuksan
4899 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
4900 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
4901 (reported by Lutz Euler)
4902 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
4903 compiled code. (reported by Paul Dietz)
4904 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
4905 specialized parameter to a method to something that is not TYPEP
4906 the specializer is now possible.
4907 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
4908 face of package deletion.
4909 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
4910 pathname. (reported by David Tolpin on c.l.l)
4911 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
4912 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
4913 STRING-STREAM and FILE-STREAM, respectively.
4914 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
4915 than previously; in addition, its test suite is now run on build.
4916 (thanks to Luke Gorrie)
4917 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
4918 * optimization: added a immediate representation for single-floats
4920 * fixed some bugs revealed by Paul Dietz' test suite:
4921 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
4922 ** attempting to create a package with a colliding nickname causes
4923 correctable errors to be signalled.
4924 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
4925 ** several x86-64 backend bugs related to sign-extension of immediate
4928 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
4929 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
4930 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
4932 * fixed loading of multiply forward-referenced layouts.
4933 (thanks to Cheuksan Wang)
4934 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
4935 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
4936 (see COMPILE-FILE documentation for details of :PRINT option)
4937 * fixed bugs 19 and 317: fixed-format floating point printing is
4938 more accurate. This also fixes a bug reported by Adam Warner
4939 related to the ~@F format directive.
4940 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
4942 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
4943 dispatch table if the from-char is a dispatch macro character.
4944 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
4945 by the wordsize no longer ignore the last word. (reported by Lutz
4947 * fixed bug in type checking of dynamic-extent variables. (reported
4949 * optimization: sequence traversal functions use their freedom to
4950 coerce function designators to functions.
4951 * optimization: code with many calls to CLOS methods specialized on
4952 CLOS classes has had redundant type checks removed.
4953 * optimization: added declarations to speed up operations that access
4954 the internal character database (for example STRING-UPCASE)
4955 * optimization: comparison operations between floats and sufficiently small
4956 fixnums no longer create extra rationals
4957 * fixed some bugs related to Unicode integration:
4958 ** portions of multibyte characters at the end of buffers for
4959 character-based file input are correctly transferred to the
4960 start of the buffer at the next read.
4961 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
4962 passing it through to OPEN.
4963 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
4964 argument given to internal calls to OPEN.
4965 ** the built-in comment readers (introduced by character sequences
4966 ";" and "#|") are more forgiving to encoding errors; they will
4967 STYLE-WARN and then attempt to resync the stream at a character
4968 boundary. (thanks to Teemu Kalvas)
4969 * fixed some bugs in the x86-64 port:
4970 ** Negative short int return values from c-calls are sign-extended
4972 ** The stack is aligned to 16-bytes for c-calls, as required by
4973 the ABI. (thanks to Cheuksan Wang)
4974 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
4975 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
4976 for enums. (thanks to Vincent Arkesteijn)
4977 ** Multiple small optimizations and bugfixes for floating point
4979 * fixed some bugs revealed by Paul Dietz' test suite:
4980 ** Space, Tab, Linefeed, Return and Page have the invalid
4981 secondary constituent character trait.
4982 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
4984 ** WITH-INPUT-FROM-STRING should only update the index place on
4986 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
4987 works more reliably.
4988 ** Bit-array operations (BIT-AND and similar) worked incorrectly
4989 with one-dimensional arrays with fill pointers.
4990 ** TYPE-OF failed on a complex with an integer realpart and a
4992 ** compiler failure during type inference for the code of form
4993 (IF (EQL X (THE ...)) ...) (MISC.535).
4995 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
4996 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
4997 platform. The port supports 61-bit fixnums, large memory spaces
4998 and reloading shared object files.
4999 * enhancement: saving cores with foreign code loaded is now
5000 supported on ppc/Darwin in addition to the previously supported
5002 * enhancement: the statistical profiler now walks deeper into the
5003 call stack for more meaningful call-graphs and accrued time
5004 reports (x86/x86-64 only). It also now reports time spent in
5006 * enhancement: it is now possible to trace most individual methods
5007 of a generic function in addition to tracing the generic function
5009 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
5011 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
5012 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
5013 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
5014 produces an error. (thanks to Vincent Arkesteijn)
5015 * bug fix: NAMESTRING on pathnames with :WILD components in their
5016 directories works correctly. (thanks to Artem V. Andreev)
5017 * fixed bug 125: compiler preserves identity of closures. (reported
5019 * bug fixed: functions with &REST arguments sometimes failed with
5020 "Undefined function" when compiled with (DEBUG 3). (reported by
5022 * bug fix: overflow during compiling of setting element of a bit
5023 vector with constant index and value. (reported by Timmy Douglas)
5024 * build fix: fixed the dependence on *LOAD-PATHNAME* and
5025 *COMPILE-FILE-PATHNAME* being absolute pathnames.
5026 * on x86 compiler partially supports stack allocation of dynamic-extent
5028 * GO and RETURN-FROM do not check the extent of their exit points
5029 when compiled with SAFETY 0.
5030 * fixed some bugs related to Unicode integration:
5031 ** encoding and decoding errors are now much more robustly
5032 handled; it should now be possible to recover even from invalid
5033 input or output to the terminal. (thanks to Teemu Kalvas)
5034 ** provided a first cut at implementing STRING-TO-OCTETS and
5035 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
5036 ** altered the SB-MD5 contributed module slightly, changing the
5037 interface just enough for it to be supportable for builds where
5038 lisp characters are not eight bits.
5039 * fixed some bugs revealed by Paul Dietz' test suite:
5040 ** the FORMATTER-generated functions for ~V[ conditionals require
5041 the correct number of arguments.
5042 ** READ-FROM-STRING returns the mandated second value when applied
5043 to displaced strings.
5044 ** the #\Rubout and #\Backspace characters are treated as invalid
5045 constituent characters by the tokenizer.
5047 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
5048 * new feature: reloading changed shared object files with
5049 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
5050 * new feature: references to foreign variables and functions
5051 can now be compiled and loaded before the corresponding shared
5052 object file is loaded, as long as the foreign definitions are
5053 available at runtime.
5054 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
5055 supported. (thanks to Dan Debertin)
5056 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
5057 just keywords. (thanks to Vincent Arkesteijn)
5058 * fixed bug #331: structure-class instances corresponding to
5059 DEFSTRUCT forms are now created eagerly.
5060 * fixed bug #345: backtraces from calls to undefined functions work
5061 on x86 as well. Related bug #61 is now also partially fixed on x86
5062 (backtraces from throws to unknown catch tags.)
5063 * bug fix: lambda-list parsing is now stricter vrt. order and number
5064 of lambda-list keywords.
5065 * bug fix: as specified by AMOP, an error is signalled if a
5066 class-option appears multiple times in a DEFCLASS form. (reported
5068 * bug fix: RANDOM can be compiled when the compiler derives the type
5069 of its numeric argument as a disjoint set of small integers.
5070 (reported by Paul Dietz)
5071 * bug fix: starting a core saved with shared objects loaded when
5072 those objects are not available no longer causes threaded SBCL to
5073 hang. (reported by Sean Ross)
5074 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
5076 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
5077 argument, which must always be NIL. (reported by Kalle Niemitalo)
5078 * bug fix: printing 1.0d+23 no longer results in an error.
5079 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
5080 * bug fix: structure slot setters preserve evaluation order. (thanks
5082 * fixed some bugs related to Unicode integration:
5083 ** RUN-PROGRAM can allow its child to take input from a Lisp
5084 stream. (reported by Stefan Scholl)
5085 ** ASDF-INSTALL successfully downloads .tar.gz files in all
5086 locales. (reported by Ken Causey)
5087 * fixed some bugs revealed by Paul Dietz' test suite:
5088 ** INCF, DECF and REMF evaluate their place form as specified in
5090 ** FORMATTER expands ~{ ~} iteration directives with V or #
5091 parameters correctly.
5092 ** FORMATTER deals with the ~@[ ~] conditional directive where the
5093 consequent uses no arguments correctly.
5094 ** the system has a partial understanding of the (COMPLEX RATIO)
5096 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
5099 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
5100 * new feature: a build-time option (controlled by the :SB-UNICODE
5101 keyword feature, enabled by default) for building the system with
5102 support for the entire 21-bit character space defined by the
5104 * new feature: the system now has rudimentary external-format
5105 support; the primary user-visible change at this time is that
5106 characters with the high bit set (such as lower-case-e-acute) will
5107 print correctly to a terminal in a UTF-8 environment.
5108 * minor incompatible change: BASE-CHAR no longer names a class;
5109 however, CHARACTER continues to do so, as required by ANSI.
5110 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
5111 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
5112 has been moved to the SB-EXT package (temporarily re-exported from
5114 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
5115 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
5117 * fixed bug #351: better error-handlind and reporting for malformed
5119 * fixed bug #350: bignum-printing is now more memory-efficient,
5120 allowing printing of very large bignums, eg. (expt 2 10000000).
5121 (reported by Bruno Haible)
5122 * fixed bug #302: better primitive-type selection for intersection
5124 * fixed bug #308: non-graphic characters now all have names, as
5125 required. (reported by Bruno Haible)
5126 * bug fix: redefining a class with different superclasses now correctly
5127 removes it from the direct-subclasses of its previous superclasses.
5128 (reported by David Morse)
5129 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
5130 new value now works. (reported by Bruno Haible)
5131 * bug fix: correct canonicalization of multiple non-standard slot
5132 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
5133 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
5134 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
5135 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
5136 now exists, an signals an error.
5137 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
5138 during macroexpansion for non-iteration variables as well. (reported
5139 by Bruno Haible for CMUCL)
5140 * bug fix: Cyclic structures and unprintable objects in compiler
5141 messages no longer cause errors. (reported by Bruno Haible)
5142 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
5143 and READ-FROM-STRING all now return a primary value of NIL if
5144 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
5145 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
5146 (reported by Bruno Haible for CMUCL)
5147 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
5148 do not designate a condition. (reported by Bruno Haible for
5150 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
5151 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
5152 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
5153 permitting resolution in favour of any of the conflicting symbols.
5154 (reported by Bruno Haible for CMUCL)
5155 * bug fix: EQUAL compiler optimizations is less aggressive on
5156 strings which can potentially compare true despite having distinct
5157 specialized array element types.
5158 * bug fix: unit enumerations can be defined without dividing by
5159 zero. (thanks to Vincent Arkesteijn)
5160 * FORMAT compile-time argument count checking has been enhanced.
5161 (report from Bruno Haible for CMUCL)
5162 * a partial workaround for the bug 262: the compiler does not try to
5163 inline-expand a local function doing RETURN-FROM from a deleted
5164 BLOCK. (thanks to Peter Denno for the bug report and to David
5165 Wragg for the simple test case)
5166 * fixed some bugs revealed by Paul Dietz' test suite:
5167 ** RENAME-PACKAGE allows all package designators as new package
5169 ** constraint propagation and lambda variable substitution are
5170 more cautious in dealing with partially deleted code.
5171 ** compiler sometimes lost reoptimization passes.
5172 ** CERROR, given a condition as condition designator, passes its
5173 remaining arguments to the continue format control without
5175 ** Case-altering FORMAT directives work correctly on non-ASCII
5177 ** The REAL type specifier handles bounds outside the floating
5178 point ranges without signalling FLOATING-POINT-OVERFLOW.
5179 ** Functions with IR1-transformations can create intercomponent
5180 references to global functions.
5181 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
5183 ** FORMAT ~R treats a nil value for its first parameter correctly.
5185 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
5186 * enhancement: saving cores with foreign code loaded is now
5187 supported on x86/NetBSD and sparc/Linux in addition to the previously
5188 supported platforms.
5189 * bug fix: on some platforms repeated installations caused multiple
5190 copies of HTML documentation to be installed -- should not happen
5191 any more. (reported by Stefan Scholl)
5192 * bug fix: parsing self-recursive alien record types multiple times
5193 no longer causes infinite recursion. (reported by Thomas F. Burdick,
5194 original patch by Helmut Eller for CMUCL)
5195 * bug fix: stack-exhaustion detection works now on NetBSD as well.
5196 (thanks to Richard Kreuter)
5197 * bug fix: defining classes whose accessors are methods on existing
5198 generic functions in other (locked) packages no longer signals
5199 bogus package lock violations. (reported by François-René Rideau)
5200 * bug fix: special variables as DEFMETHOD parameters no longer have
5201 associated bogus type declarations. (reported by David Wragg and
5203 * bug fix: read-write consistency on streams of element-type
5204 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
5205 * bug fix: redefiniton of the only method of a generic function with
5206 no DEFGENERIC no longer emits a full WARNING. In addition,
5207 redefinition of generic functions with no DEFGENERIC to an
5208 incompatible lambda list now signals an error. (thanks to Zach
5210 * bug fix: DEFGENERIC now works even when there's a function of the
5211 same name in an enclosing lexical environment. (thanks to Zach
5213 * fixed compiler failure, caused by instrumenting code during
5214 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
5215 * optimization: added loop analysis and improved register allocation
5216 * fixed some bugs revealed by Paul Dietz' test suite:
5217 ** POSITION on displaced vectors with non-zero displacement
5218 returns the right answer.
5219 ** (SIMPLE-STRING) is a valid type specifier for sequence
5221 ** *PRINT-LEVEL* handling for slotless structures is pedantically
5223 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
5224 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
5226 ** The justification version of the FORMAT ~< directive treats
5227 non-zero minpad parameter correctly.
5229 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
5230 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
5231 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
5232 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
5233 the supported interface.
5234 * new feature: Single-stepping of code compiled with DEBUG 2 or
5235 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
5236 * new feature: saving cores with foreign code loaded is now
5237 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
5238 Timothy Moore's work for CMUCL)
5239 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
5240 parameters to * instead of NIL if no initform is supplied.
5241 (reported by Johan Bockgaard)
5242 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
5243 correctly when FUNCALL appears as the car of the form. Note:
5244 despite this FUNCALL forms are not currently subject to
5245 compiler-macro expansion. (port of Raymond Toy's fix for the
5246 same from CMUCL, reported by Johan Bockgaard)
5247 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
5248 (thanks for Teemu Kalvas)
5249 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
5250 case instead of terminating the iteration (thanks for Julian
5251 Squires, Sean Champ and Raymond Toy)
5252 * bug fix: incorrect expansion of defgeneric that caused a style
5253 warning. (thanks for Zach Beane)
5254 * bug fix: slot accessor effective method computation works properly
5255 for classes with multiple non-standard applicable methods on
5256 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
5257 * on x86 compiler supports stack allocation of results of LIST and
5258 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
5259 CMUCL implementation by Gerd Moellmann)
5260 * fixed some bugs revealed by Paul Dietz' test suite:
5261 ** FORMAT strings with both the ~<~:;~> form of the justification
5262 directive and pretty-printing directives cause an error.
5264 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
5265 * incompatible change: the internal functions
5266 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
5267 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
5268 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
5269 instead of the old functions.
5270 * new feature: on platforms where "dladdr" is available foreign
5271 function names now appear in backtraces. (based on Helmut Eller's
5273 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
5274 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
5276 * documentation: ASDF manual is now distributed with SBCL.
5277 * bug fix: SBCL can now load its contributed modules with REQUIRE
5278 even if the system-provided entries have been removed from
5279 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
5281 * bug fix: backtraces involving undefined functions or assembly
5282 routines are more informative. (thanks to Brian Downing)
5283 * bug fix: mutually referent alien structures now work correctly.
5284 (reported by Rick Taube)
5285 * bug fix: structures defined by WITH-ALIEN can be referred to
5286 within other definitions in the same WITH-ALIEN.
5287 * bug fix: division operators (MOD, TRUNCATE and the like) with
5288 constant zero divisors and integer dividends no longer generate
5290 * bug fix: provide default methods for INPUT-STREAM-P and
5291 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
5292 * bug fix: improve the detection and resolution of MOP metacycles
5293 (where effective method computation depends on the generic function
5294 having its effective method computed). (reported by Bruno Haible)
5295 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
5296 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
5297 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
5298 * bug fix: pathnames with relative directory components can be
5299 represented relative to default pathnames.
5300 * optimization: in taking the GCD of bignums, reduce the two bignums
5301 to approximately the same size (using Euclid's algorithm) before
5302 applying the more sophisticated binary GCD. (thanks to Juho
5304 * optimization: COUNT on bitvectors now operates word-at-a-time.
5305 * optimization: ASH with a positive, but not necessarily constant,
5306 (leftwards) shift, when in a modular context, is compiled to a
5308 * fixed some bugs revealed by Paul Dietz' test suite:
5309 ** FORMAT variable parameters ("~V<char>") are defaulted properly
5310 if the corresponding argument is NIL.
5311 ** FORMAT directives accepting a minpad parameter treat negative
5313 ** literal commas as character parameters to FORMAT directives are
5315 ** literal spaces directly after ~<Newline> directives within a
5316 format-logical-block (~:< ~@:>) do not induce :FILL-style
5317 conditional newlines.
5318 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
5319 as specified: it no longer includes conditional newlines).
5320 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
5322 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
5323 :PER-LINE-PREFIX argument does not evaluate to a string.
5325 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
5326 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
5327 the manual for details; for now, package locks can be disabled by
5328 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
5329 if no major problems are found then it is likely that they will be
5330 compiled in unconditionally.
5331 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
5332 unsupported operators on all platforms. To load a shared library
5333 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
5334 object file, link it into a shared library outside of SBCL and
5335 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
5337 * bug workaround: ROOM T and the GC were not working together
5338 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
5339 reporting facility aren't preserved. That reporting has been
5340 disabled, so now until and unless someone figures out how to make it
5341 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
5342 * minor incompatible change: as threatened around sbcl-0.8.0, the
5343 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
5344 The symbols are also exported from SB-PCL for backwards
5345 compatibility, but more so than before SB-PCL should be treated as
5346 an implementation-internal package.
5347 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
5349 * the SB-SPROF contrib now works on (most) non-x86 architectures.
5350 It is known as of this release not to work on the Alpha, however.
5351 * fixed bug #167: errors signalled due to illegal syntax in method
5352 bodies are now more legible.
5353 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
5354 designators and can hence be used with TYPEP.
5355 * fixed bug #333: CHECK-TYPE now ensures that the type error
5356 signalled, if any, has the right object to be accessed by
5357 TYPE-ERROR-DATUM. (reported by Tony Martinez)
5358 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
5359 5.1.2.3 for multiple-value place subforms. (reported by Kalle
5361 * fixed bug #334: programmatic addition of slots using specialized
5362 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
5363 and :ALLOCATION :CLASS slots.
5364 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
5365 float exponents. (rereported by Peter Seibel)
5366 * fixed a bug: #\Space (and other whitespace characters) are no
5367 longer considered to be macro characters in standard syntax by
5368 GET-MACRO-CHARACTER.
5369 * fixed bug: initialization of condition class metaobjects no longer
5370 causes an instance of the condition to be created. (reported by
5372 * fixed bug: it is now possible to have slots such that
5373 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
5374 description is neither :INSTANCE nor :CLASS.
5375 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
5376 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
5377 SLOT-VALUE-USING-CLASS), and no longer causes errors with
5378 non-standard SLOT-DEFINITION-ALLOCATION values.
5379 * fixed bugs: various race conditions handling exiting threads.
5380 CL-PPCRE's thread torture test now passes.
5381 * fixed arguably-a-bug: GC time proportional to number of threads in
5382 system even when most of them are idle
5383 * optimization: improved performance of BIT and SBIT on bit-vectors.
5384 * .fasl file incompatibility: The fasl file version number has
5385 been incremented because of changes associated with package locks.
5387 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
5388 * minor incompatible change: the system no longer provides
5389 optimization hints (conditions which are TYPEP
5390 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
5391 mode; these hints are still emitted when higher SPEED optimization
5393 * new contrib module: a sampling profiler (profiling by statistical
5394 sampling, rather than by instrumenting functions) is available as
5395 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
5396 * the behaviour of the standard function ED is now customizeable by
5397 third parties through a hook variable: see ED's documentation
5398 string for information on the protocol.
5399 * the compiler no longer emits efficiency notes for (FUNCALL X)
5400 when the type of X is uncertain under default optimization
5402 * fixed bug 276: mutating a binding of a specialized parameter to a
5403 method to something that is not TYPEP the specializer is now
5405 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
5406 exhibit the required behaviour on the x86 platform. (thanks to
5407 Peter van Eynde, Eric Marsden and Bruno Haible)
5408 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
5409 even for difficult arguments. (reported by Peter Graves)
5410 * fixed bug 141a: the backquote printer now descends quoted
5412 * fixed another bug in backquote printing: no more destructive
5413 modification of the form's list structure. (reported by Brian
5415 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
5416 move between its address being taken and the call to
5417 interrupt_thread, fixing a crashing race condition.
5418 * the SB-POSIX contrib implementation has been adjusted so that it
5419 no longer exhibits ridiculously poor performance when constructing
5420 instances corresponding to C structs.
5422 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
5423 * minor incompatible change: the sb-grovel contrib now treats C
5424 structures as alien (in the sense of SB-ALIEN) objects rather than
5425 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
5426 has implications for memory management of client code
5427 (sb-grovel-returned objects must now be manually managed) and for
5428 type safety (alien objects now have full types).
5429 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
5430 used to control emission of compiler diagnostics, rather than the
5431 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
5432 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
5433 quality should be considered deprecated.
5434 * install.sh now installs the user manual as well
5435 * (not quite a new documentable feature, but worth considering in
5436 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
5437 beginnings of a semantically meaningful condition hierarchy is
5438 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
5440 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
5441 designator as the defaults argument.
5442 * fixed bug: Displaced arrays whose displaced-to array has become
5443 too small now cause ARRAY-DIMENSION to signal an error, providing
5444 for safer bounds-checking. (reported by Bruno Haible)
5445 * fixed bug: DEFCLASS slot definitions with identical :READER and
5446 :WRITER names now signal a reasonable error. (reported by Thomas
5448 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
5450 * fixed bug: Invalid slot specification errors now print correctly.
5451 (thanks to Zach Beane)
5452 * fixed bug 320: Shared to local slot value transfers in class
5453 redefinitions now happen corrently from superclasses as
5454 well. (reported by Bruno Haible)
5455 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
5457 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
5458 improper lists correctly. (reported by Bruno Haible)
5459 * fixed bug 313: source-transform for <fun-name> was erroneously
5460 applied to a call of a value of a variable with name <fun-name>.
5461 (reported by Antonio Menezes Leitao)
5462 * fixed bug 307: The obsolete instance protocol ensures that
5463 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
5464 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
5465 remove dead unknown-values globs from the middle of the stack.
5466 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
5467 easier to resume long computations after using *BREAK-ON-SIGNALS*
5468 to diagnose and fix failures. (thanks to Nikodemus Siivola)
5469 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
5470 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
5471 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
5472 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
5473 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
5475 * fixed a (fairly theoretical) bug in string printing: if
5476 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
5477 does not have array-element-type equal to the most general string
5479 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
5480 function name. (thanks to Nikodemus Siivola)
5481 * fixed bug: compile-time format string checker failed on
5482 non-closed ~{. (reported by Thomas F Burdick)
5483 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
5484 don't warn on legal loop code involving more than one aggregate
5485 boolean. (thanks to Nikodemus Siivola)
5486 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
5487 in keyword position to MAKE-PACKAGE was not being reported as
5489 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
5490 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
5492 * fixed bugs 280 and 312: the checking for multiple definitions in a
5493 file is less likely to become confused by uses of inline
5495 * fixed bug: the #S reader macro performs the keyword coercion
5496 specified for slot names. (reported by Kalle Niemitalo)
5497 * fixed bug: lambda lists may contain symbols whose names start with
5498 & but are not lambda-list-keywords; their occurrence triggers a
5500 * fixed bug 321: define-method-combination argument lambda lists do
5501 not cause invalid code to be generated when &optional or &aux
5502 variables have default values. (reported by Bruno Haible)
5503 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
5504 have CLOS classes; this appears also to have fixed reported
5505 instability in stack exhaustion detection.
5506 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
5507 MUFFLE-WARNING when no associated restart is present is now
5509 * optimization: rearranged the expansion of various defining macros
5510 so that each expands into only one top-level form in a
5511 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
5513 * optimization: used a previously little-used slot in symbols to
5514 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
5516 * fixed some bugs revealed by Paul Dietz' test suite:
5517 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
5519 ** Fixed an optimization bug related to inheritance of initforms
5520 from local to shared slots.
5521 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
5522 ** CAST optimizer forgot to flush argument derived type.
5523 ** print/read consistency on floats is now orders of magnitude
5524 more likely. (thanks also to Bruno Haible for a similar report
5526 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
5527 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
5528 for objects of type REAL. Make it so.
5529 ** SXHASH is specified (infelicitously) to respect similarity,
5530 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
5531 it so. (thanks to Markus Ziegler)
5532 ** on the Alpha, the compiler succeeds in compiling functions
5533 returning a known number of arguments greater than 63.
5534 ** fixed handling of invalid NIL arguments in keyword position
5536 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
5538 ** provided a readably-printable representation for RANDOM-STATE
5540 ** ensured that pathnames, where they have a namestring, always
5541 print using #P"..." syntax.
5543 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
5544 * Support for the forthcoming 2.0 version of the NetBSD kernel
5545 running on x86 hardware has been added. (thanks to Perry
5546 E. Metzger most immediately, and others for their past work)
5547 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
5548 current release version; SBCL's OpenBSD support had been broken
5549 since about the time of OpenBSD's switch to ELF binary format.)
5550 * [placeholder for DX summary]
5551 ** user code with &REST lists declared dynamic-extent, under high
5552 speed or space and low safety and debug optimization policy.
5553 * The manual has been converted to Texinfo format and the debugger
5554 chapter from the cmucl manual has been added.
5555 * A facility has been added to extract documentation strings from
5556 sbcl and store them as Texinfo-formatted snippets for inclusion in
5557 the manual (via Texinfo's @include directive)
5558 * bug fix: compiler emitted division in optimized DEREF. (thanks for
5559 the test case to Dave Roberts)
5560 * bug fix: multidimensional simple arrays loaded from FASLs had fill
5561 pointers. (reported by Sean Ross)
5562 * bug fix: PROFILE output is printed nicely even for large numerical
5563 values. (thanks to Zach Beane)
5564 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
5565 greater than 32 handle EOF correctly.
5566 * bug fix: on X86 an immediate argument of the IMUL instruction is
5567 correctly printed in disassembly. (thanks to Lutz Euler)
5568 * bug fix: class slots in redefined classes preserve their old
5569 values. (thanks to Bruno Haible and Nikodemus Siivola)
5570 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
5571 succeeds. (reported by Marco Baringer)
5572 * fixed some bugs revealed by Paul Dietz' test suite:
5573 ** READ-SEQUENCE now works on ECHO-STREAMs.
5574 ** RATIONALIZE works more according to its specification. (thanks
5577 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
5578 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
5579 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
5580 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
5581 should matter to you only if you rebind the printer control
5582 variables and then find you want different bindings in the
5583 debugger than in the ordinary execution of your program.)
5584 * The runtime build system has been tweaked to support building
5585 (on SPARC/SunOS) using a C compiler which invokes Sun's own
5586 assembler and linker. (thanks to Nikodemus Siivola)
5587 * Unbound, undefined, undeclared variables now trigger full
5588 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
5589 more often programmer error than deliberate exploitation of undefined
5591 * optimization: the hash algorithm for strings has changed to one
5592 that is less vulnerable to spurious collisions. (thanks to Juho
5594 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
5595 needless bounds checking. (thanks to Juho Snellman)
5596 * optimization: implemented multiplication as a modular
5597 (UNSIGNED-BYTE 32) operation on the PPC backend.
5598 * fixed some bugs revealed by Paul Dietz' test suite:
5599 ** ADJUST-ARRAY now copies the datum in a zero rank array if
5601 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
5602 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
5603 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
5605 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
5607 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
5609 ** ECHO-STREAMs no longer attempt to echo the end of file value to
5610 their output stream on EOF from read.
5611 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
5612 have been read to end-of-file.
5613 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
5615 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
5616 description of determination of which consecutive characters
5618 ** Printing the "Space" character with escaping on now yields "#\\ ",
5619 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
5620 ** Reading floating-point numbers with *READ-BASE* set to a number
5621 less than 10 works correctly.
5622 ** Reading floating-point numbers with *READ-BASE* set to a number
5623 more than 10 works correctly.
5624 ** Printing with *PRINT-READABLY* targets the standard readtable, not
5625 the readtable currently in effect.
5627 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
5628 * minor incompatible change: parsing of namestrings on a physical
5629 (Unix) host has changed; numbers after the final #\. in a
5630 namestring are no longer interpreted as a version field. This is
5631 intented to be largely invisible to the user, except that the
5632 meaning of the namestring "*.*.*" has changed: it now refers to a
5633 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
5634 should usually be replaced by
5635 (make-pathname :name :wild :type :wild :version :wild)
5636 with the added benefit that this is more likely to be portable.
5637 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
5638 option to OPEN now signals an error if the file being opened
5639 exists; this may have an impact on existing code.
5640 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
5641 signals received, on the PowerPC platforms (both Linux and
5642 Darwin). (thanks to Pierre Mai for pointing out the location of
5644 * several fixes on OS X: The system now builds and runs cleanly on
5645 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
5646 (thanks to Brian Mastenbrook)
5647 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
5648 second-resolution: integer multiples of 1/3600 between -24 and 24.
5649 (thanks to Vincent Arkesteijn)
5650 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
5651 type when called with 1 argument; PEEK-CHAR checked type of
5652 PEEK-TYPE only after having read first character from a
5653 stream. (reported by Peter Graves)
5654 * bug fix: the garbage collector now has much better locality
5655 behaviour, and in particular no longer treats all memory as being
5656 exhausted when many small objects point to each other in a deeply
5658 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
5659 recognized as being TYPEP their class.
5660 * bug fix: the PUSHNEW documentation string has been corrected.
5661 (thanks to Vincent Arkesteijn)
5662 * bug fix: defaulting of the value for the last of an atypically
5663 large number of multiple values being bound was not being
5664 performed correctly on the Alpha or PPC platforms
5665 * optimization: implemented multiplication as a modular
5666 (UNSIGNED-BYTE 32) operation on the x86 backend.
5667 * optimization: SEARCH on simple-base-strings can now be open-coded.
5668 (see also contrib/compiler-extras.lisp for inspiration for
5669 teaching the compiler about the Boyer-Moore algorithm).
5670 * value, returned by MAX (and MIN) called with several EQUALP, but
5671 not EQL, arguments now does not depend on compiler settings.
5672 * fixed some bugs revealed by Paul Dietz' test suite:
5673 ** in stack analysis liveness information is propagated from
5674 non-local entry points.
5675 ** pathwise CAST removing failed when the CAST node did not start
5677 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
5678 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
5680 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
5681 host is already defined.
5682 ** RENAME-FILE works on streams instead of signalling an internal
5684 ** PEEK-CHAR uses the current readtable when determining whether
5685 or not a character is whitespace.
5686 ** MERGE-PATHNAMES handles the case when the pathname does not
5687 specify a name while the default-pathname specifies a version.
5688 ** Pathnames now stand a better chance of respecting print/read
5690 ** Attempting to use standardized file system operators with a
5691 pathname with invalid :DIRECTORY components signals a
5693 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
5695 ** DIRECTORY on logical pathnames is more correct.
5696 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
5697 signal a TYPE-ERROR if their argument is not a stream.
5698 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
5699 designator argument does not designate a stream.
5700 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
5701 examining the synonym.
5702 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
5704 ** OPEN and WITH-OPEN-STREAM allow opening streams with
5705 element-type larger than ([UN]SIGNED-BYTE 32).
5707 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
5708 * When built with the :SB-FUTEX feature, threaded builds now take
5709 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
5710 for faster/more reliable mutex and condition variable support.
5711 * Incompatible change (but one you probably shouldn't have been using
5712 anyway): the interface and code for arbitrating between multiple
5713 threads in the same user session has been redesigned.
5714 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
5715 error when called without an explicit environment argument.
5716 (thanks to Nikodemus Siivola)
5717 * bug fix: buffered :DIRECTION :IO streams are less likely to become
5718 confused about their position. (thanks to Adam Warner and Gerd
5720 * bug fix: Pretty printing backquoted forms with unquotations in the
5721 argument list position of various code constructs such as LAMBDA
5722 now works correctly. (reported by Paul Dietz)
5723 * bug fix: Pretty printing unquotations no longer loses all
5724 stream position information.
5725 * optimization: performance of string output streams is now less
5726 poor for multiple small sequence writes.
5727 * optimization: performance of CSUBTYPEP in the presence of complex
5728 expressions involving CONS and NOT many times has been improved.
5729 (reported by Paul Dietz)
5730 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
5732 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
5733 streams for the REPL, for the debugger, and so on. (thanks to
5735 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
5736 * fixed some bugs revealed by Paul Dietz' test suite:
5737 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
5738 is ignored if it is too small, rather than propagating through
5739 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
5740 ** extremely complex negations of CONS types were not being
5741 sufficiently canonicalized, leading to inconsistencies in
5743 ** VALUES tranformer lost derived type.
5745 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
5746 * fixed a bootstrapping bug: the build process no longer assumes
5747 that the various BOOLE-related constants have the same value in
5748 host and target lisps. (noted by Paul Dietz' test suite on an
5749 SBCL binary built from CLISP)
5750 * The system can now be dynamically linked on the MIPS platform,
5751 which enables dynamic loading of foreign code from Lisp. (thanks
5752 to Ralf Baechle for discussions on the MIPS ABI)
5753 * The system now records debugging information for its own source
5754 files in a filesystem-position-independent manner, relative to
5755 the "SYS" logical host.
5756 * fixed a compiler bug: MV-LET convertion did not check references
5757 to the "max args" entry point. (reported by Brian Downing)
5758 * tweaked disassembly notes to be less confident about proclaiming
5759 some instruction as an LRA. (thanks to Brian Downing)
5760 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
5761 now each have their own history, command character, and other
5762 characteristics. (thanks to David Lichteblau)
5763 * fixed some bugs revealed by Paul Dietz' test suite:
5764 ** compiler failure in compiling LOGAND expressions including a
5766 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
5767 shift greater than 32.
5768 ** FLUSH-DEST did not mark blocks for type check regeneration.
5769 ** HANDLER-CASE failed to accept declarations in handler clauses
5770 in some circumstances.
5772 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
5773 * New code in contrib/sb-introspect (still probably not entirely
5774 stable yet) provides some support for smart Lisp development
5775 environments like SLIME.
5776 * The conditions signalled for errors occurring when loading .fasl
5777 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
5778 in a way which should help ASDF recover gracefully.
5779 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
5780 stuff has been cleaned up. If you code contrib/ stuff, this might
5781 affect you, and you can look at contrib/README, contrib/STANDARDS,
5782 and/or the 0.8.4.27 diff to check.
5783 * In full calls the compiler now does not generate checks for declared
5784 argument types for all arguments.
5785 * various threading fixes
5786 ** and some experimental patches which didn't make it into
5787 the main tree for this release, but which are shipped in
5788 contrib/experimental-thread.patch as a possible fix for some
5789 failures (deadlock, spinning...) in GC-intensive multithreaded
5791 * fixed PPC build problem (source code incompatibility of different
5792 library versions): added offsetof() hackery which attempts to divine
5793 where glibc maintainers put uc_mcontext today
5794 * fixed bug 282: compiler does not trust type assertions while passing
5795 arguments to a full call.
5796 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
5797 &OPTIONAL VALUES type parameter.
5798 * fix bug 214: algorithm for noting rejected templates is now more
5799 similar to that of template seletion. (also reported by rydis on
5801 * fixed bug 141b: printing backquoted information readably and prettily
5802 inserts a space where necessary.
5803 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
5804 (CHARACTER 10) are now reported as errors, rather than propagated
5805 as unknown types. (reported by piso on #lisp)
5806 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
5807 with values NIL and :ERROR. (thanks to Milan Zamazal)
5808 * fixed bug 191c: CLOS now does proper keyword argument checking as
5809 described in CLHS 7.6.5 and 7.6.5.1.
5810 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
5811 longer raise an error; further, using a list as a for-as-arithmetic
5812 counter now raises a meaningful error.
5813 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
5814 now understood by sequence creation functions such as MAKE-SEQUENCE
5816 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
5817 a STRING-INPUT-STREAM.
5818 * compiler enhancement: SIGNUM is now better able to derive the type
5820 * type declarations inside WITH-SLOTS are checked. (reported by
5822 * fixed some bugs revealed by Paul Dietz' test suite:
5823 ** incorrect optimization of TRUNCATE for a positive first
5824 argument and negative second.
5825 ** compiler failure in let-convertion during flushing dead code.
5826 ** compiler failure while deriving type of TRUNCATE on an
5827 interval, containing 0.
5828 ** ASH of a negative bignum by a negative bignum count now returns
5830 ** intersection of CONS types now canonicalizes properly, fixing
5831 inconsistencies in SUBTYPEP.
5833 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
5834 * incompatible change: The --disable-debugger command line
5835 option now clobbers the debugger at a more fundamental
5836 level, by redefining #'INVOKE-DEBUGGER instead of by
5837 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
5838 is specified by ANSI to ignore *DEBUGGER-HOOK* and
5839 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
5840 enter the debugger REPL and then suffer recursive errors
5841 because *DEBUG-IO* is also messed up in --disable-debugger mode;
5842 while under the new system, BREAK in --disable-debugger mode
5843 terminates the system just as an unhandled error would.
5844 * fixed compiler performance when processing loops with a step >1;
5845 * bug fix: DOCUMENTATION now retrieves generic function
5846 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
5847 support has been systematized, and now supports the methods
5848 specified by ANSI, along with a default method and a method for
5849 slot documentation. (reported by Nathan Froyd)
5850 * bug fix: effective methods associated with a generic function are
5851 no longer cached over a change of that generic function's method
5852 combination. (reported by Andreas Fuchs)
5853 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
5854 names a non-existent directory. (thanks to Andreas Fuchs)
5855 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
5856 the PPC platform, lead to stack corruption; this has been fixed.
5857 (reported by Rainer Joswig)
5858 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
5859 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
5860 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
5861 arithmetic in general, is now much more reliable on the PPC
5863 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
5864 platform now returns the right answer.
5865 * optimization: restored some effective method precomputation in
5866 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
5867 precomputation is now tunable.
5868 * optimization: compiler-internal data structure use has been
5869 reviewed, and changes have been made that should improve the
5870 performance of the compiler by about 20%.
5871 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
5872 simple-base-strings and simple-bit-vectors is improved.
5873 * optimization: the optimization of 32-bit logical and arithmetic
5874 functions introduced in version 0.8.3 on the x86 has been
5875 implemented on the mips, ppc and sparc platforms; an
5876 implementation of the same facility, but for 64-bit arithmetic,
5877 has been added for the alpha.
5878 * microoptimization: the compiler is better able to make use of the
5879 x86 LEA instruction for multiplication by constants.
5880 * bug fix: in some situations compiler did not report usage of
5881 generic arithmetic in (SPEED 3) policy.
5882 * bug 145b fix: compiler used wrong type specifier while converting
5883 MEMBER-types to numeric.
5884 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
5886 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
5887 index argument now works properly on the Alpha platform.
5888 * bug fix: floating point exception treatment on the Alpha platform
5890 * bug fix: FILE-POSITION works much better on string input and
5891 output streams. (thanks to Nikodemus Siivola)
5892 * bug fix: many threading/garbage collection symptoms sorted.
5893 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
5894 might be pseudo-atomic.
5895 * internal change: Stopping for GC is now done with signals not
5896 ptrace. GC is now done in whichever thread wanted it, instead of
5898 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
5900 * bug fix: result form in DO is not contained in the implicit
5902 * incompatible change: ICR structure is changed; the value part of
5903 CONTINUATION is now called LVAR; corresponding functions are
5904 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
5905 * added type deriver for ISQRT (thanks to Robert E. Brown).
5906 * bug fix: better support for loading from the command line when an
5907 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
5909 * fixed some bugs revealed by Paul Dietz' test suite:
5910 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
5911 ** ROUND and FROUND now give the right answer when given very
5912 small float arguments.
5913 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
5915 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
5916 ** (GCD 0 <negative-integer>) returned <negative-integer>.
5917 ** LCM should return a non-negative integer.
5918 ** PARSE-INTEGER returned the index of a terminator instead of the
5919 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
5920 ** PARSE-INTEGER returned an incorrect index being applied to a
5922 ** LCM with two arguments of 0 returns 0 rather than signalling
5924 ** unsigned addition of a 32-bit constant with the high bit set no
5925 longer causes an internal compiler error on the x86.
5926 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
5927 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
5928 with negative last argument.
5929 ** byte specifiers with zero size and position no longer cause
5930 an error during type derivation.
5931 ** bignum multiplication on the Alpha platform now returns the
5933 * porting: The system now builds on SuSE AMD64, although it still
5934 generates a 32-bit binary.
5935 * .fasl file incompatibility: The fasl file version number has
5936 been incremented (because of the changes to internal compiler
5937 data structures referred to above).
5939 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
5940 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
5941 more accurately, on the Darwin kernel running on PowerPC hardware.
5942 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
5943 * Compiler code deletion notes now signal a condition of type
5944 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
5945 an associated MUFFLE-WARNING restart.
5946 * The compiler now performs limited argument count validation of
5947 constant format strings in FORMAT, and where appropriate in ERROR,
5948 CERROR and WARN. (thanks to Gerd Moellmann)
5949 * New ASDF-INSTALL contrib can be used for automatic download and
5950 installation of third-party Lisp code from CCLAN or other sites
5952 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
5953 which forces another thread to execute a function supplied by the
5955 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
5956 now accept and act upon their :ELEMENT-TYPE keyword argument.
5957 (reported by Martin Atzmueller, Edi Weitz)
5958 * bug fix: FILE-POSITION now accepts position designators up to
5959 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
5960 is the greater. (thanks to Patrik Nordebo)
5961 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
5962 Kalle Olavi Niemitalo)
5963 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
5964 printable. (reported by Eric Marsden)
5965 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
5966 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
5967 * x86 bug fix in control stack exhaustion checking: now shows backtrace
5968 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
5969 (thanks to Stig Sandoe)
5970 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
5971 UNREAD-CHAR now correctly includes the unread character in the
5972 target sequence. (thanks to Gerd Moellmann)
5973 * bug fix in threaded builds: the system can now be suspended and
5974 resumed by shell job control with minimal disruption.
5975 * bug fixes in times and timezones >2038AD
5976 * better handling of "where is GNU make?" problem in build scripts
5977 (thanks to Nikodemus Siivola)
5978 * new optimization: inside a named function any reference to a
5979 function with the same name is considered to be a self-reference;
5980 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
5981 optimization quality.
5982 * new optimization on x86: logical functions and + now have
5983 optimized (UNSIGNED-BYTE 32) versions, which are automatically
5984 used when the result is truncated to 32 bits.
5985 * VALUES declaration is partially enabled.
5986 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
5987 * fixed some bugs revealed by Paul Dietz' test suite:
5988 ** The system now obeys the constraint imposed by
5989 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
5990 types form a lattice under type intersection.
5991 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
5992 ** ASSOC now ignores NIL elements in an alist.
5993 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
5994 and (1+ MOST-POSITIVE-FIXNUM) answers.
5995 ** The addition of a method with invalid qualifiers to a generic
5996 function does not cause an error to be signalled immediately;
5997 a warning is signalled, and the error is generated only on
5998 calling the generic function.
5999 * changed .fasl file version number, in part to add type codes for
6000 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
6001 obscure ANSI requirements
6003 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
6004 * fixed bug 148: failure to inline-expand a local function left
6005 garbage, confusing the compiler.
6006 * fixed bugs 3cd: structure slot readers perform type check if the
6007 slot can have an invalid value (i.e. it is either not initialized
6008 or can be written with a less specific slot writer).
6009 * bug fix: the compiler now traps array references to elements off
6010 the end of an array; previously, the bounds checking in some
6011 circumstances could go off-by-one.
6012 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
6014 * type declarations for array element types now obey the description
6015 on the CLHS page "Declaration TYPE", as per discussions on
6016 sbcl-help around 2003-05-08. This means that a declaration
6017 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
6018 declaration, all references to BAR will be asserted or assumed
6019 (with THE, so dependent on compiler policy) to involve objects of
6020 type FOO. Note that no such declaration is implied in
6021 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
6022 * declared types of functions from the "Conditions"
6023 chapter. (reported by Paul Dietz)
6024 * bug fix: CERROR accepts a function as its first argument.
6025 * bug fix: NTH an NTHCDR accept a bignum as index
6026 arguments. (reported by Adam Warner)
6027 * optimization: character compare routines now optimize comparing
6028 against a constant character. (reported by Gilbert Baumann)
6029 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
6030 argument now works properly on the MIPS platform.
6031 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
6032 * repeated evaluation of the same DEFSTRUCT, a slot of which is
6033 declared to have a functional type, does not cause an error
6035 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
6036 many :DEFAULT-INITARGS. (reported by Istvan Marko)
6037 * fixed bug: if last continuation of a deleted block has a
6038 destination, this destination should be deleted too. (reported by
6040 * fixed a bug in the bootstrap process: the host compiler's values
6041 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
6042 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
6043 test case from Patrik Nordebo)
6044 * improved the ability of the disassembler on the PPC platform to
6045 provide helpful disassembly notes.
6046 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
6047 the class in more cases than previously.
6048 * bug fix: FILE-POSITION now understands :START and :END for
6049 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
6050 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
6051 8) data. (thanks to David Lichteblau)
6052 * bug fix: it is possible to add a method to a generic function
6053 without lambda list.
6054 * bug fix: reader failed to signal END-OF-FILE inside an
6055 object representation. (reported by Nikodemus Siivola)
6056 * fixed some bugs revealed by Paul Dietz' test suite:
6057 ** LAST and [N]BUTLAST should accept a bignum.
6058 ** condition slot accessors are methods.
6059 ** (VECTOR NIL) is a subtype of STRING.
6061 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
6062 * minor incompatible change: some nonsensical specialized lambda
6063 lists (used in DEFMETHOD) which were previously ignored now signal
6065 * minor incompatible change: the system is now aware of the types of
6066 variables in the COMMON-LISP package, and will signal errors for
6067 most violations of these type constraints (where previously they
6068 were silently accepted).
6069 * minor incompatible change: COMPILE-FILE now uses the freedom
6070 afforded (ANSI 3.2.2.3) to use derived function types for
6071 functions defined in the same file. This also permits the system
6072 to warn on static type mismatches and function
6073 redefinition. (Currently it does not work with high DEBUG level.)
6074 * minor incompatible change: VALUES declaration is disabled.
6075 * When issuing notes, the compiler now signals a condition of type
6076 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
6077 restart for use in user handlers. It is expected that the
6078 COMPILER-NOTE condition will eventually become a condition
6079 supertype to a hierarchy of note types, which will then be
6080 handleable in a similar fashion. However, at the moment, no such
6081 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
6082 but it's an implementation detail, not a classification for the
6084 * Changes in type checking closed the following bugs:
6085 ** type checking of unused values (192b, 194d, 203);
6086 ** template selection based on unsafe type assertions (192c, 236);
6087 ** type checking in branches (194bc).
6088 * A short form of VALUES type specifier has ANSI meaning (it has
6089 increased the number of situations when SBCL cannot perform type
6091 * fixed bug in DEFSTRUCT: once again, naming structure slots with
6092 keywords or constants is permissible.
6093 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
6094 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
6095 classes. (thanks to Antonio Martinez)
6096 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
6097 outputs FRESH-LINE or TERPRI, and no longer converts its stream
6098 argument to a pretty-print stream. Instead, it leaves any such
6099 operations to DESCRIBE-OBJECT methods.
6100 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
6102 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
6103 lambda lists. (thanks to David Lichteblau)
6104 * bug fix: Defining a generic function with a :METHOD-CLASS being a
6105 subclass of STANDARD-METHOD no longer causes stack exhaustion.
6106 (thanks to Gerd Moellmann)
6107 * fixed bug 246: increased compilation speed of long
6108 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
6110 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
6112 * DEFCONSTANT now throws a condition of type
6113 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
6114 constant to a non-EQL value; CONTINUE and ABORT restarts
6115 respectively change and preserve the value.
6116 * fixed bug 63: The code walker, part of the implementation of CLOS,
6117 is now better at handling symbol macros.
6118 * bug fix: There is no longer an internal implementation type named
6119 CL:LENGTH. (reported by Raymond Toy)
6120 * bug fix: In macro-like defining macros/special operators the
6121 implicit block does not enclose the lambda list.
6122 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
6123 enclosed in parentheses) are not suitable as type specifiers, and
6124 their use properly signals an error now.
6125 * bug fix: An argument count mismatch for a type specifier in code
6126 being compiled no longer causes an unhandled error at compile
6127 time, but signals a compile-time warning.
6128 * fixed simple vector readable printing
6129 * bug fix: DESCRIBE takes more care over whether the class
6130 precedence list slot of a class is bound before accessing it.
6131 (reported by Markus Krummenacker)
6132 * bug fix: FORMATTER can successfully compile pretty-printer format
6133 strings which use variants of the ~* directive inside.
6134 * bug fix: SEARCH now applies its TEST predicate to the elements of
6135 the arguments in the correct order. (thanks to Wolfhard Buss)
6136 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
6137 in type inference. (thanks to Robert E. Brown)
6138 * bug fix: Reading in symbols with an explicit package name of ""
6139 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
6140 * fixed some bugs revealed by Paul Dietz' test suite:
6141 ** NIL is now allowed as a structure slot name.
6142 ** Arbitrary numbers, not just REALs, are allowed in certain
6143 circumstances in LOOP for-as-arithmetic clauses.
6144 ** Multiple class redefinitions before slot access no longer
6145 causes a type error.
6146 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
6147 association between the name and a class.
6148 ** Generic functions with non-standard method-combination and over
6149 five methods all of which return constants no longer return NIL
6150 after the first few invocations. (thanks to Gerd Moellmann)
6151 ** CALL-NEXT-METHOD with no arguments now passes the original
6152 values of the arguments, even in the presence of assignment.
6153 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
6155 ** DISASSEMBLE works with closures and funcallable instances.
6156 ** ADD-METHOD now returns the generic function, not the new method.
6157 ** FIND-METHOD signals an error if the lengths of the specializers
6158 is incompatible with the generic function, even if the ERRORP
6160 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
6161 which its argument is a member.
6162 ** DEFCLASS only redefines the class named by its class-name
6163 argument if that name is the proper name of the class;
6164 otherwise, it creates a new class.
6165 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
6166 of the UNBOUND-SLOT condition to the name of the slot.
6167 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
6168 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
6169 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
6170 SLOT-MAKUNBOUND in the specified fashion.
6172 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
6173 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
6174 cross-compilation host. As a consequence, we can now bootstrap our
6175 way up to SBCL starting with a bare gcc toolchain and human-readable
6176 source code (first the source to CLISP, then the source to SBCL).
6177 * A contributed module containing a partial implementation of the
6178 simple-streams interface has been included. (thanks to Rudi
6180 * A contributed module implementing the RFC1321 Message Digest
6181 Algorithm, known as MD5, has been included.
6182 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
6183 no longer has any effect, as the code controlled by this feature
6184 has been deleted. (As far as we know, no-one has ever built using
6185 this feature, and its semantics were confused in any case).
6186 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
6187 work on conditions (as required by the ANSI specification),
6188 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
6189 expected behaviour on conditions. Users should note, however,
6190 that such behaviour is not required by the ANSI specification,
6191 and so use of this behaviour may render their code unportable.
6192 * fixed some bugs revealed by Paul Dietz' test suite:
6193 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
6195 ** &ENVIRONMENT parameter in macro lambda list is bound first.
6196 ** SXHASH on condition objects no longer returns NIL.
6197 ** :ALLOCATION :CLASS slots are better treated; their values are
6198 updated on class redefinition, and initforms inherited from
6199 superclasses are applied.
6200 ** REMOVE-METHOD returns its generic function argument even when
6201 no method was removed.
6202 ** SHARED-INITIALIZE now initializes the values of the requested
6203 slots, including those with :ALLOCATION :CLASS.
6204 ** ALLOCATE-INSTANCE now works on structure classes defined via
6205 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
6207 ** SLOT-EXISTS-P now works on conditions, as well as structures
6209 ** MAKE-LOAD-FORM now has the required methods on
6210 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
6211 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
6212 keyword, and now implements the SLOT-NAMES argument.
6213 ** methods with &OPTIONAL arguments no longer allow too many
6214 arguments to be passed in the call without error.
6215 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
6216 option is consistent with the required arguments of the generic
6217 function lambda list.
6218 * bug fix: REQUIRE accepts a string designator. (Thanks to
6220 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
6221 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
6222 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
6223 * bug fix: The compiler now checks for duplicated variables in macro
6225 * bug fix: SETQ on globals returns the correct value.
6226 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
6227 not a COMPILER-ERROR (followed by some other strange error on
6228 choosing the CONTINUE restart).
6229 * bug fix: make.sh and friends are now more consistent in the way that
6230 they look for GNU "make".
6232 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
6233 * experimental native threads support (on x86 Linux >=2.4 only).
6234 This is not compiled in by default: you need to add :SB-THREAD to
6235 the target features. See the "Beyond ANSI" chapter of the manual
6237 * fix for longstanding nonANSIism: The old distinction between
6238 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
6239 The return value from CL:FIND-CLASS is now a CLOS class, and
6240 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
6241 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
6242 * An interface to the MetaObject Protocol, as described in Kiczales,
6243 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
6244 MIT Press, 1991, is available from the SB-MOP package.
6245 * incompatible change: the SB-PCL package should now be considered
6246 a private implementation detail, and no longer a semi-private MOP
6248 * minor incompatible change: due to rearrangement for threads, the
6249 control stack and binding stack are now allocated at arbitrary
6250 addresses instead of being hardcoded per-port. Users affected by
6251 this probably have to be doing advanced things with shared
6252 libraries, and will know who they are.
6253 * minor incompatible change: Previously, all --eval forms used were
6254 processed with READ before any of them were processed with EVAL.
6255 Now each --eval form is processed with both READ and EVAL before
6256 the next --eval form is processed. (Thus package operations like
6257 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
6258 work as the user might reasonably expect.)
6259 * minor incompatible change: *STANDARD-INPUT* is now only an
6260 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
6262 * minor incompatible change: Y-OR-N-P is now character-oriented,
6263 not line oriented. Also, YES-OR-NO-P now works without errors.
6264 (thanks to Antonio Martinez)
6265 * sb-aclrepl module improvements: an integrated inspector, added
6266 repl features, and a bug fix to :trace command.
6267 * Known functions, which cannot be open coded by the backend, are
6268 considered to be able to check types of their arguments. (fixing
6269 a bug report by Nathan J. Froyd)
6270 * fixed a bug in computing method discriminating functions: It is
6271 now possible to define methods specialized on classes which have
6272 forward-referenced superclasses. (thanks to Gerd Moellmann)
6273 * fixed evaluation order in optional entries (reported by Gilbert
6275 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
6276 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
6277 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
6278 required-by-AMOP NAME argument, as well as CLASS and
6279 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
6280 * fixed bug 20: DEFMETHOD can define methods using names that are
6281 not the proper names of classes to designate class specializers.
6282 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
6283 Unix file descriptors, instead of blowing up. (thanks to Antonio
6285 * Garbage collection refactoring: user-visible change is that a
6286 call to the GC function during WITHOUT-GCING will not do garbage
6287 collection until the end of the WITHOUT-GCING. If you were doing
6288 this you were probably losing anyway.
6289 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
6290 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
6291 TYPEP the latter but not the former.
6292 * The compiler issues a full WARNING for calls to undefined functions
6293 with names from the CL package.
6294 * MAP-INTO for a vector destination is open coded. (reported by
6295 Brian Downing on c.l.l)
6296 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
6297 documentation string.
6298 * fixed some bugs revealed by Paul Dietz' test suite:
6299 ** COPY-ALIST now signals an error if its argument is a dotted
6301 ** Condition slots are now accessed more correctly in the presence
6302 of multiple initargs for a given slot.
6303 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
6304 exclude restarts of the same name associated with a different
6306 ** DEFCLASS of forward-referenced classes with another
6307 forward-referenced class in the superclasses list no longer
6309 ** Condition slots are now initialized once each, not multiple
6310 times. (thanks to Gerd Moellmann)
6311 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
6313 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
6314 ** NSET-EXCLUSIVE-OR does not return extra elements when its
6315 arguments contain duplicated elements.
6316 ** RESTART-CASE understands local macros.
6317 ** RESTART-CASE associates exactly its own restarts with a condition.
6318 ** ENDP in safe mode checks its argument to be of type LIST.
6319 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
6320 in question is unbound.
6321 ** Optimized MAKE-INSTANCE functions no longer cause internal
6322 assertion failures in the presence of duplicate initargs.
6323 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
6324 ** Side-effectful :DEFAULT-INITARGS have their side-effects
6325 propagated even in the ctor optimized implementation of
6327 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
6329 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
6330 * a better implementation of SXHASH on (simple) bit vectors,
6331 measured both in execution speed and in distribution of results
6332 over the positive fixnums, has been installed. Likewise, a better
6333 implementation of EQUAL for simple bit vectors is now available.
6334 * fixed CEILING optimization for a divisor of form 2^k.
6335 * fixed bug 240 (emitting extra style warnings "using the lexical
6336 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
6337 by Antonio Martinez)
6338 * fixed SXHASH, giving different results for NIL depending on type
6339 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
6340 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
6341 variable. (found by Rolf Wester)
6342 * SBCL does not ignore type declarations for special
6343 variables. (reported by rif on c.l.l 2003-03-05)
6344 * some bug fixes in contrib/sb-aclrepl/
6345 * fixed some bugs revealed by Paul Dietz' test suite:
6346 ** a bug in the CONS type specifier, whereby the CAR and CDR
6347 types got intertwined, has been fixed;
6348 ** the type system is now able to reason about the interaction
6349 between INTEGER and RATIO types more completely;
6350 ** APPEND, [N]REVERSE and NRECONC check that those their
6351 arguments, which must be proper lists, are really so;
6352 ** An array specialized to be unable to hold elements has been
6353 implemented, as required -- yes, really -- by ANSI;
6354 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
6355 on malformed property lists;
6357 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
6358 * incompatible packaging change: in line with Unix convention,
6359 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
6360 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
6361 * REQUIRE and PROVIDE are now optionally capable of doing something
6362 useful. See the documentation string for REQUIRE.
6363 * infrastructure for a managed SBCL contrib system: contributed
6364 modules in this release include:
6365 ** the ASDF system definition facility;
6366 ** an interface to the BSD Sockets API;
6367 ** an ACL-like convenience interface to the repl;
6368 (thanks to Kevin Rosenberg)
6369 ** an implementation of ROTATE-BYTE, with efficient implementation
6371 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
6372 gives a closer approximation to the right answer than previously.
6373 (thanks to Raymond Toy)
6374 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
6375 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
6376 optional environment arguments, as required by ANSI.
6377 * fixed bugs in other functions taking environment objects, allowing
6378 calls with an explicit NIL environment argument to be compiled
6380 * fixed bug 228: primary return values from
6381 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
6382 COMPILE or FUNCTION.
6383 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
6384 :TYPE will no longer signal errors on innocuous objects.
6385 * fixed bug 231b: SETQ is better at respecting type declarations in
6386 the lexical environment.
6387 * fixed a bug in DEFCLASS: classes named by symbols with no or
6388 unprintable packages can now be defined.
6389 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
6390 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
6391 * fixed compiler failure related to checking types of functions.
6392 (reported by Robert E. Brown)
6393 * the compiler is now much more consistent in its error-checking
6394 treatment of bounding index arguments to sequence functions: in
6395 (SAFETY 3) code, errors will be signalled in almost all cases if
6396 invalid sequence bounding indices are passed to functions defined
6397 by ANSI to operate on sequences.
6398 * fixed a bug in the build procedure: documentation of SBCL-specific
6399 packages is now preserved and available in the final Lisp image.
6400 * lifted FDEFINITION lookup out of loops in the implementation of
6401 many list operations. (thanks to Robert E. Brown)
6402 * fixed a bug in the reader: the #n# reader macro now works for
6403 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
6404 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
6405 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
6406 E. Brown and Tony Martinez respectively)
6407 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
6408 SLOT-BOUNDP: in particular, it is now able to optimize them much
6409 better, and is now not vulnerable to having packages renamed.
6410 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
6411 always called when a slot is not present in an instance. (thanks
6413 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
6414 longer signal an error on unreading a character following EOF on
6415 the previous constituent stream. (thanks to Tony Martinez)
6416 * fixed some bugs revealed by Paul Dietz' test suite:
6417 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
6418 not just nonnegative fixnums;
6419 ** the logical bit-array operators such as BIT-AND now accept an
6420 explicit NIL for their "opt-arg" argument (to indicate a
6421 freshly-consed result bit-array);
6422 ** ELT now signals an error on an invalid sequence index in safe
6424 ** the type system is now cleverer about negations of numeric
6425 types, and consequently understands the BIGNUM and RATIO types
6427 ** the type system is now cleverer about the interaction between
6428 INTEGER and RATIO types: while bugs still remain, many more
6429 cases are accurately computed;
6430 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
6431 if it is in the last clause;
6432 ** CONSTANTLY now correctly returns a side-effect-free function in
6434 ** DECLARE is no longer treated as a special-operator; in
6435 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
6436 * incremented fasl file version number due to the change in the
6437 DEFSTRUCT-SLOT-DESCRIPTION structure.
6439 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
6440 * minor incompatible change: code processed by the "interpreter" or
6441 EVAL now has a compilation optimization policy of (DEBUG 2)
6442 (changed from (DEBUG 1)) to improve debuggability of interactive
6443 development, and to allow the use of the debug RETURN command in
6445 * an experimental implementation of the RETURN command for the
6446 debugger has been included. (thanks to Frederik Kuivinen)
6447 * fixed bug 62: constraints were not propagated into a loop.
6448 * fixed bug in embedded calls of SORT (reported and investigated by
6450 * fixed some bugs revealed by Paul Dietz' test suite:
6451 ** printing and reading of arrays with some dimensions having
6452 length 0 (thanks to Gerd Moellmann);
6453 ** BOA constructor with &AUX argument without a default value does
6454 not cause a type error;
6455 ** CONSTANTP now returns true for all self-evaluating objects.
6457 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
6458 * fixed bug 127: DEFSTRUCT now does not clobber old structure
6459 accessors that are related by inheritance, as specified in the
6460 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
6461 Valtteri Vuorikoski)
6462 * The compiler is now able to inline functions that were defined in
6463 a complex lexical environment (e.g. inside a MACROLET).
6464 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
6466 * Support for the upcoming FreeBSD-5.0 release has been included.
6467 (thanks to Dag-Erling Smorgrav)
6468 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
6469 effect when it is not in a toplevel context.
6470 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
6471 stand a better chance of being correct. (thanks to Gerd
6473 * fixed bug in COERCE, which now signals an error on coercing a
6474 rational to a bounded real type which excludes the expected
6476 * The compiler is now able to derive types more accurately from the
6477 COERCE and COMPILE functions.
6478 * fixed bug 223: functional binding is considered to be constant
6479 only for symbols in the CL package.
6480 * fixed bug 231: SETQ did not check the type of a variable being set
6481 (reported by Robert E. Brown)
6482 * A new optimization for MAKE-INSTANCE has been included, fixing
6483 various bugs (including relating to :ALLOCATION :CLASS slots and
6484 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
6486 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
6487 ** As required by ANSI, LOOP now disallows anonymous collection
6488 clauses such as COLLECT I in conjunction with aggregate boolean
6489 clauses such as THEREIS (= I 1);
6490 ** LOOP now signals an error when any variable is reused in the
6491 same loop (including the potentially useful construct analogous
6492 to WITH A = 1 WITH A = (1+ A);
6493 ** IT is only a special loop symbol within the first clause of a
6494 conditional loop clause;
6495 ** LOOP with a typed iteration variable over a hashtable now
6496 signals a type error iff it should.
6497 * fixed some other bugs revealed by Paul Dietz' test suite:
6498 ** FILE-STREAM now names the class previously known as FD-STREAM;
6499 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
6500 argument) no longer signals an error;
6501 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
6502 of the slot symbol, rather than using the current package
6503 ((:CONC-NAME "") continues to intern the slot's name in the
6505 * incremented fasl file version number, because of the incompatible
6506 change to the DEFSTRUCT-DESCRIPTION structure, and again because
6507 of the new implementation of DEFINE-COMPILER-MACRO.
6509 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
6510 * Support for building SBCL for MIPS platforms running in
6511 little-endian mode has now been checked in, and basic
6512 functionality on said platforms verified.
6513 * minor incompatible change: PCL now records the pathname of a file
6514 in which methods and the like are defined, rather than its
6516 * minor incompatible change: TRUENAME now considers the truename of
6517 a file naming a directory to be the pathname with :DIRECTORY
6518 component indicating that directory.
6519 * minor incompatible change: a NAMED clause in the extended form of
6520 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
6521 reason for the previous behaviour is unclear.
6522 * more systematization and improvement of CLOS and MOP conformance
6523 in PCL (thanks to Gerd Moellman and Pierre Mai):
6524 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
6526 ** DEFINE-METHOD-COMBINATION no longer signals an error for
6527 primary methods with no specializers;
6528 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
6530 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
6531 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
6532 FORWARD-REFERENCED-CLASSes; error reporting on
6533 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
6535 ** SXHASH on CLOS instances now uses a slot internal to the
6536 instance to return different numbers on distinct instances,
6537 while preserving the same return value through invocations of
6539 ** DEFMETHOD signals errors when methods with longer incongruent
6540 lambda lists are added to generic functions;
6541 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
6542 CLASS, as specified in AMOP;
6543 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
6544 on the order returned by the primary method for classes of
6545 class STANDARD-CLASS;
6546 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
6547 * fixed some bugs shown by Paul Dietz' test suite:
6548 ** DOLIST puts its body in TAGBODY;
6549 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
6551 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
6552 value producing form;
6553 ** if more variables are given to PROGV than values, extra
6554 variables are bound and made to have no value;
6555 ** NSUBSTITUTE on list arguments gets the right answer with
6557 ** ELT signals an error of type TYPE-ERROR when the index argument
6558 is not a valid sequence index;
6559 ** LOOP signals (at macroexpansion time) an error of type
6560 PROGRAM-ERROR when duplicate variable names are found;
6561 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
6562 ** FUNCALL of special-operators now cause an error of type
6564 ** PSETQ now works as required in the presence of side-effecting
6565 symbol-macro places;
6566 ** NCONC accepts any object as its last argument;
6567 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
6569 ** loop-for-as-package does not require a package to be explicitely
6571 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
6573 * fixed bug 166: compiler preserves "there is a way to go"
6574 invariant when deleting code.
6575 * fixed bug 172: macro lambda lists with required arguments after
6576 &REST arguments now cause an error to be signalled. (thanks to
6578 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
6579 bug. (thanks to Matthew Danish)
6580 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
6582 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
6583 arguments are lexically rebound. (thanks to Gerd Moellmann and
6585 * fixed bug 194: error messages are now more informative when there
6586 is no primary method applicable in a call to a generic
6587 function. (thanks to Gerd Moellmann)
6588 * fixed bug in command line argument checking (thanks to Julian
6590 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
6591 (thanks to Matthew Danish)
6592 * incremented fasl file version number, because of the
6593 SXHASH-related changes in the layout of CLOS data structures
6595 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
6596 * minor incompatible change: The runtime (the Unix executable named
6597 "sbcl") is now much pickier about the .core files it will load.
6598 Essentially it now requires .core files to descend from the same
6599 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
6600 as the runtime does. (The intent is to prevent the crashes which
6601 can occur, and which can even be reported as mysterious failures,
6602 when people patch the sources or change the build parameters
6603 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
6604 sbcl and .core files.)
6605 * fixed bug: VALUES-LIST is no longer optimized away.
6606 * fixed bug 142: The FFI conversion of C string values to Lisp
6607 string values no longer conses excessively. (thanks to Nathan
6608 Froyd porting Raymond Toy's fix to CMU CL)
6609 * began to systematize and improve MOP conformance in PCL (thanks to
6610 Nathan Froyd, Gerd Moellman and Pierre Mai):
6611 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
6613 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
6614 ** FINALIZE-INHERITANCE is now called on class finalization;
6615 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
6616 argument precedence order.
6617 * fixed bug 202: The compiler no longer fails on functions whose
6618 derived types contradict their declared type.
6619 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
6620 so it can be non-toplevel.
6621 * The fasl file version number has changed (because of the new
6622 implementation of DEFMACRO).
6623 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
6624 safe code, that any length requirement by their type-specifier
6625 argument is valid. The exceptions to this are described in bug
6627 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
6628 functions now check the types of their inputs as required by ANSI.
6629 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
6630 introduced symbol is DECLAREd to be SPECIAL.
6631 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
6632 * fixed bug: :COUNT argument to sequence functions may be negative
6633 * fixed bug: body of DO-SYMBOLS may contain declarations
6634 * fixed bug: PUSHNEW now evaluates its arguments from left to right
6635 (reported by Paul F. Dietz, fixed by Gerd Moellman)
6636 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
6637 symbol macro only once
6638 * fixed printing of call frame when argument list is unavailable
6639 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
6640 * compiler no longer signals WARNING on unknown keyword
6643 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
6644 * A beta-quality port to the mips architecture running Linux,
6645 based on the old CMUCL backend, has been made. It has been tested
6646 on a big-endian kernel, and works sufficiently well to be able to
6647 rebuild itself; it has not been tested in little-endian mode.
6648 * fixed an inconsistency between gencgc.c and purify.c which made
6649 dumping/loading .core files unreliable
6650 * fixed bug 120a: The compiler now deals correctly with IFs where
6651 the consequent is the same as the alternative, instead of
6652 misderiving the return type. (thanks to Alexey Dejneka)
6653 * fixed bug 113: Logical pathnames are now dumpable (the logical
6654 host is resolved at load-time, throwing an error if it is not
6656 * fixed bug 174: FORMAT's error message is slightly clearer when a
6657 non-printing character is used in a format directive.
6658 * fixed several bugs in compiler checking of type declarations, i.e.
6659 violations of the Python "declarations are assertions" principle
6660 (thanks to Alexey Dejneka)
6661 * fixed several bugs in PCL's error checking (thanks to Gerd
6663 * fixed bug: printing of FILE-ERROR (thanks to Antonio
6665 * fixed bug in compilation of functions as first class values
6666 (thanks to Antonio Martinez-Shotton)
6667 * The compiler's handling TYPE-ERRORs which it can prove will
6668 inevitably happen at runtime has been cleaned up and corrected
6669 in several ways. (thanks to Alexey Dejneka)
6670 * improved argument type checking for various basic arithmetic
6671 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
6672 lavished on them in the past that they can be compiled in many
6673 ways in different special cases
6674 * fixed bug 181: compiler checks validity of user supplied type
6676 * cleaned up code flushing in optimization: Function calls which
6677 should signal errors for safety purposes (e.g. which ANSI says
6678 should signal errors when their arguments are of incorrect type)
6679 are no longer optimized away.
6680 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
6681 * incremented fasl file version number, because changes in the
6682 implementation of sequence functions like COERCE caused
6683 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
6684 in old inline expansions) to become undefined. (Actually these
6685 changes were later undone, so we might very well be binary
6686 compatible with 0.7.7 after all, but leaving the version number
6687 incremented seemed like the simplest and most conservative
6690 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
6691 * An alpha-quality port to the parisc architecture running Linux,
6692 based on the old CMUCL backend, has been made. This, even more so
6693 than the other backends, should be considered still a work in
6694 progress; known problems include that the Linux kernel in 64-bit
6695 mode does not propagate the correct sigcontext structure to
6696 userspace, and consequently SBCL on a parisc64 kernel will not
6698 * fixed bug 189: The compiler now respects NOTINLINE declarations for
6699 functions declared in FLET and LABELS. (I.e. "LET conversion" is
6700 suppressed.) Also now that the compiler is looking at declarations
6701 in the environment, it checks optimization declarations as well,
6702 and suppresses inlining when (> DEBUG SPEED).
6703 * More fixes have been made to treatment of floating point exception
6704 treatment and other Unix signals. In particular, floating point
6705 exceptions no longer cause Bus errors on the SPARC/Linux platform.
6706 * The detection and handling of control stack exhaustion (infinite
6707 or very deeply nested recursion) has changed. Stack exhaustion
6708 detection is now done by write-protecting pages at the OS level
6709 and applies at all optimization settings; when found, a
6710 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
6711 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
6712 be caught using IGNORE-ERRORS.
6713 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
6714 correctly when transforming recursive LABELS functions to LETs.
6715 (thanks to Alexey Dejneka)
6716 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
6717 that are names of constants or global variables.
6718 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
6719 alien routines with docstrings.
6720 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
6721 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
6723 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
6724 (thanks to Eric Marsden)
6725 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
6726 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
6727 * Bug fix: The SPARC backend can now compile functions involving
6728 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
6729 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
6730 to a functions expecting a PATHNAME-DESIGNATOR.
6731 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
6732 lambda lists. (thanks to Alexey Dejneka)
6733 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
6734 functions so that EXPORTing the name of the class doesn't cause
6735 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
6736 to Antonio Martinez for reporting this)
6737 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
6738 constant-folded without failing an assertion. (thanks to Einar
6739 Floystad Dorum for reporting this)
6740 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
6741 types are now dealt with more correctly by the compiler.
6742 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
6743 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
6744 behaviour analogous to RENAME-FILE. This puts its behaviour more
6745 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
6747 * The fasl file version number has changed again. (because of the
6748 bug fix involving the names of PCL MAKE-INSTANCE functions)
6750 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
6751 * bug fix: Floating point exceptions are treated much more
6752 consistently on the x86/Linux and PPC/Linux platforms.
6753 * Array initialization with :INITIAL-ELEMENT is now much faster for
6754 cases when the compiler cannot open code the array creation, but
6755 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
6756 array accesses have also seen a speed increase.
6757 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
6758 specified. (This was at the root of some bad interactions between
6759 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
6761 * bug fix: Internal error arguments for undefined functions are now
6762 computed correctly on the PPC/Linux platform.
6763 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
6764 Raymond Toy's patch for CMU CL)
6765 * Support for the Solaris 9 operating environment has been included
6766 (thanks to Daniel Merritt)
6767 * A very ugly but hopefully complete draft of the missing FFI chapter
6768 of the manual has been created by reformatting the corresponding
6769 CMU CL manual chapter into (currently very ugly and incoherent)
6770 DocBook and bringing it up to date for SBCL behavior. Thus, the
6771 manual is now essentially complete, at least by my extreme
6772 once-and-only-once standards, whereby it's acceptable to refer to
6773 the doc strings of SB-EXT functions as the primary documentation.
6774 * The fasl file version number has changed again, due to cleanup of
6775 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
6776 is no longer a static symbol.)
6778 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
6779 * SBCL now builds with OpenMCL (version 0.12) as the
6780 cross-compilation host; also, more progress has been made toward
6781 bootstrapping under CLISP.
6782 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
6784 * bug 158 fixed: The compiler can now deal with integer loop
6785 increments different from 1; fixing this turned out also to fix
6787 * bug 169 fixed: no more bogus warnings about using lexical bindings
6788 despite the presence of perfectly good SPECIAL declarations (thanks
6789 to David Lichteblau)
6790 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
6791 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
6792 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
6794 * bug 180 fixed: Method combination specifications no longer ignore
6795 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
6796 * bug fix: Structure type predicate functions now check their argument
6797 count as they should.
6798 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
6799 correctly. (thanks to Pierre Mai)
6800 * minor incompatible change: The --noprogrammer option is deprecated
6801 in favor of the new --disable-debugger option, which is very similar.
6802 (The major difference is that it takes effect at a slightly different
6803 time at startup, causing handling of errors in --sysinit and
6804 --userinit files will be affected differently.) The
6805 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
6806 been added to allow this functionality to be controlled from ordinary
6807 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
6808 maintainers, who might want to run non-interactive scripts to
6809 build SBCL cores which will later be used interactively.)
6810 * minor incompatible change: The LOAD function no longer, when given
6811 a wild pathname to load, loads all files matching that pathname.
6812 Instead, an error of type FILE-ERROR is signalled.
6814 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
6815 * bug 147 fixed: The compiler preserves its block link/count
6816 invariants more correctly now so that it doesn't crash. (thanks
6818 * Dynamic loading of object files in OpenBSD is now supported. (thanks
6820 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
6821 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
6822 no-value-for-this-character as NIL (as specified by ANSI).
6823 * HOST-NAMESTRING on physical pathnames now returns a string that is
6824 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
6825 (thanks to Christophe Rhodes)
6826 * The Alpha port handles icache flushing more correctly. (thanks to
6828 * More progress has been made toward bootstrapping under CLISP. (thanks
6829 to Christophe Rhodes)
6830 * The fasl file format has changed again, because dynamic loading
6831 on OpenBSD (which has non-ELF object files) motivated some cleanups
6832 in the way that foreign symbols are transformed and passed around.
6833 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
6834 is no longer treated as whitespace by the reader, but instead as
6835 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
6836 |A
\x7fB|, instead of A as it used to.
6838 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
6839 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
6840 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
6841 * SBCL now runs on the PPC archtiecture under Linux. It actually did
6842 this as of 0.7.1.45, but was left out of the previous news section
6843 (thanks to Dan Barlow)
6844 * SBCL now runs on the Solaris operating system on SPARC architectures
6845 (thanks to Christophe Rhodes's port of the CMUCL runtime)
6846 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
6847 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
6848 * SPARC backend cleanups, allowing builds of cores optimized for V8
6849 and V9 SPARCS, and also emission of code targeted to a particular
6850 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
6852 * SBCL is closer to bootstrapping under CLISP, thanks to various
6853 fixes by Christophe Rhodes.
6854 * The fasl file format has changed again, to allow the compiler's
6855 INFO database to support symbol macros.
6856 * The user manual (in doc/) is formatted into HTML more nicely.
6857 (thanks to coreythomas)
6858 * The system is smarter about SUBTYPEP relationships, especially
6859 those involving NOT types (including types such as ATOM which are
6860 represented internally using NOT types). Thus SUBTYPEP is less
6861 likely to return (VALUES NIL NIL) in general, and in particular
6862 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
6864 * The fasl file format has changed again, because the internal
6865 representation of types now includes a new slot to support the new
6866 SUBTYPEP-of-NOT-types logic.
6867 * (not a change in the main branch of SBCL, but a related prototype
6868 which can hopefully be merged into the main branch of SBCL in the
6869 future:) Brian Spilsbury has produced a Unicode-enabled variant of
6870 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
6871 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
6872 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
6873 dispatch macro character combinations. (thanks to Alexey Dejneka)
6874 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
6875 that superficially look like logical namestrings correctly.
6876 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
6878 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
6879 default supplied-p) for &optional and &key arguments. (thanks to
6882 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
6883 * incompatible change: The compiler is now less aggressive about
6884 tail call optimization, doing it only when (> SPACE DEBUG) or
6885 (> SPEED DEBUG). (This is an incompatible change because there are
6886 programs which relied on the old CMU-CL-style behavior to optimize
6887 away their unbounded recursion which will now die of stack overflow.)
6888 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
6889 for non-GENCGC systems has been increased to 20M (since that
6890 seems much closer to the likely performance optimum for modern
6891 systems than the old 4M value was)
6892 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
6893 and *DEBUG-PRINT-LEVEL*
6894 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
6895 of CMU CL's support for SPARC, and various endianness and other
6896 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
6897 * new syntactic sugar for the Unix command line: --load foo.bar is now
6898 an alternate notation for --eval '(load "foo.bar")'.
6900 ** The system now detects stack overflow and handles it gracefully,
6901 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
6902 optimization settings. (This is a good thing in general, and
6903 its introduction in this version should be particularly timely
6904 for anyone whose code fails because of suppression of tail
6906 ** The system now hunts for the C variable "environ" in a more
6907 devious way, to avoid segfaults when the C library version differs
6908 between compile time and run time. (thanks to Christophe Rhodes)
6909 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
6910 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
6911 ** The compiler no longer issues bogus style warnings for undefined
6912 classes in the same source file as the DEFCLASSes which defined
6913 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
6915 ** fixes in CONDITION class precedence list for undefined function
6916 errors (thanks to Alexei Dejneka)
6917 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
6918 correctly. (thanks to Dan Barlow)
6919 ** portability fixes aiming at bootstrapping under CLISP (thanks
6920 to Dave McDonald and Christophe Rhodes)
6921 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
6922 ** fixes in type translation and and type inference (thanks to
6924 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
6925 ** various fixes in the new ports (thanks to Dan Barlow)
6926 * several changes related to debugging:
6927 ** suppression of tail recursion, as noted above
6928 ** stack overflow detection, as noted above
6929 ** The default implementation of TRACE has changed. :ENCAPSULATE T
6930 is now the default. (For some time encapsulation has been more
6931 reliable than the breakpoint-based :ENCAPSULATE NIL
6932 implementation, at least on X86 systems; and I just noticed that
6933 encapsulation also seems closer to the spirit of the ANSI
6936 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
6938 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
6939 up properly again. (There was a packaging bug in 0.7.0 which
6940 left their definitions in SB-SYS::LOAD-FOREIGN and
6941 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
6942 vital for most things which interface to C-level interfaces,
6943 like extensions working with sockets or databases or
6944 Perl-compatible regexes or whatever, and the need to fix
6945 this bug is the main reason that 0.7.1 was released so
6947 ** DEFGENERIC is now choosier about the methods it redefines, so that
6948 reLOADing a previously-LOADed file containing DEFGENERICs does
6949 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
6950 cycle now works as it should. (thanks to Alexey Dejneka)
6951 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
6952 fixed by Christophe Rhodes. (He actually submitted this patch
6953 months ago, and I delayed until after 0.7.0.)
6954 ** Bug 111 (internal compiler confusion about runtime checks on
6955 FUNCTION types) was fixed by Alexey Dejneka.
6956 * Some internal cleanups (getting rid of variables which aren't
6957 needed now that the byte interpreter is gone) caused the fasl
6958 file format number to change again.
6960 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
6961 * major incompatible change: The default fasl file extension, i.e. the
6962 default extension for files produced by COMPILE-FILE, has changed
6963 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
6965 ** There are many changes in the implementation of the compiler.
6966 SBCL is now essentially a compiler-only implementation of ANSI
6967 Common Lisp. EVAL still "interprets" a few special cases, but
6968 almost all the interesting cases are handled by creating
6969 a LAMBDA expression, calling COMPILE on it, then calling
6970 FUNCALL on the result.
6971 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
6972 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
6973 Since the code is newer, there might still be some new bugs
6974 (though not as many as before Martin Atzmueller's fixes:-). But
6975 the new code is substantially simpler and clearer, and hopefully
6976 any remaining bugs will be simpler, less fundamental, and more
6977 fixable then the bugs in the old code.
6978 ** The revised compiler is still a little unsteady on its feet.
6980 *** The debugging information it produces (particularly the names
6981 of FUNCTION objects) is sometimes much less useful than what
6982 the old compiler produced.
6983 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
6984 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
6985 within a MACROLET) has been temporarily weakened.
6986 ** There are new compiler optimizations for various functions:
6987 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
6988 FIND-IF-NOT, POSITION-IF-NOT, and FILL
6989 *** the math functions TRUNCATE, FLOOR, and CEILING
6990 *** the function-of-all-trades COERCE
6991 Mostly these should be transparent, but there's one
6992 potentially-annoying problem (bug 117): when the compiler
6993 inline-expands a function and does type analysis on the result,
6994 it can create control paths which have type mismatches, and
6995 when it can't prove that those control paths aren't taken,
6996 it will issue WARNINGs about the type mismatches. This is
6997 a particular problem in practice for the new sequence functions.
6998 It's not clear how this should be fixed, and for now, a
6999 workaround is given in the entry for 117 in the BUGS file.
7000 ** (Because of the interaction between the two previous items --
7001 occasional inlining problems and new inline expansions -- some
7002 of the new sequence function optimizations won't really kick in
7003 completely until debugging information, and then inlining, are
7004 straightened out in some future version.)
7005 * minor incompatible changes:
7006 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
7007 DIRECTORY no longer implicitly promotes NIL slots of its
7008 pathname argument to :WILD. In particular, when you ask for the
7009 contents of a directory (which you used to be able to do without
7010 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
7011 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
7012 ** changes in behavior that ANSI explicitly defines to be
7013 implementation dependent:
7014 *** The new compiler-only implementation still conforms with ANSI,
7015 but acts a little different than before. Besides the obvious
7016 changes in performance tradeoffs (that the cost per form passed
7017 to EVAL has gone up, and the cost per form executed by EVAL
7018 has gone down), the behavior of the system changes a little
7019 because there are no longer any interpreted function objects.
7020 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
7021 e.g. doing COMPILE on the output of interactive DEFUN is
7023 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
7025 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
7026 has changed from (:CL) to NIL.
7027 *** The CHAR-NAME of unprintable ASCII characters which, unlike
7028 e.g. #\Newline and #\Tab, don't have names specified in the
7029 ANSI Common Lisp standard, is now based on their ASCII symbolic
7030 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
7031 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
7032 are no longer used for output.
7033 ** changes in internal implementation constants:
7034 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
7035 4 million. (If your application spends a lot of time GCing and
7036 you have a lot of RAM, you might want to experiment with
7037 increasing it even more.)
7038 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
7039 However, almost all old code should still continue to work without
7040 immediate update, as SB-C-CALL is now a (deprecated) nickname
7042 ** Old operator names in the style DEF-FOO are now deprecated in
7043 favor of new corresponding names DEFINE-FOO, for consistency with
7044 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
7045 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
7046 internal symbols, but a few supported extensions like
7047 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
7048 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
7049 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
7050 etc. as you get deeper into recursive calls to the debugger
7051 command loop, instead of the old "5]", "5]]", "5]]]"
7052 sequence. (I was motivated to do this when squabbles between
7053 ILISP and SBCL left me very deeply nested in the debugger. In the
7054 short term, this change will probably provoke more ILISP/SBCL
7055 squabbles, but hopefully it will be an improvement in the long run.)
7056 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
7057 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
7058 function, since declaiming return types involving aliens is
7059 (1) annoyingly messy to do by hand and (2) vital to efficient
7060 compilation of code which calls such functions.
7061 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
7062 longer reexported by the SB-EXT package. They're solely useful
7063 for alien code, so it seems more logical that you should get
7064 them from the SB-ALIEN package, not in SB-EXT.
7065 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
7066 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
7067 features. Instead, the code that they used to control is always
7068 built into the system.
7069 * many other bug fixes
7070 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
7071 advantage of the new EVAL-WHEN stuff and to clean them up in
7072 general, and they are now more ANSI-compliant in a number of
7073 ways. Martin Atzmueller is responsible for a lot of this.
7074 ** Besides the cleanups discussed above, Martin Atzmueller fixed
7076 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
7077 *** correct ERROR type for various file operations
7078 *** some fixes for Lisp streams
7079 *** DEFMETHOD syntax checking
7080 *** changing old weird representation of debug information as
7081 strings (which, among their other deficiencies, don't transform
7082 correctly when you rename packages, and don't change their
7083 print representation when you change things like *PACKAGE*
7084 and *PRINT-LENGTH*) to symbols and lists of symbols
7085 He also made several improvements and fixed several bugs in DESCRIBE.
7086 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
7088 *** misbehavior of WRITE-STRING/WRITE-LINE
7089 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
7090 and several other LOOP problems as well
7091 *** DIRECTORY when similar filenames are present
7092 *** DEFGENERIC with :METHOD options
7093 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
7094 *** bug in the optimization of ARRAY-ELEMENT-TYPE
7095 *** argument ordering in FIND with :TEST option
7096 *** mishandled package designator argument in APROPOS-LIST
7097 *** various problems in the backquote readmacro
7098 *** a bug in APROPOS
7099 *** probably some others that I'm not describing very well here,
7100 since the CVS log documents them by reference to sbcl-devel
7101 messages, and the SourceForge archives aren't working well.:-(
7102 ** Dan Barlow improved the Alpha port (and is making progress on the
7103 PPC port, for those of you who think different).
7104 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
7105 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
7106 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
7107 continues to work on the SPARC port (for those of you in a position
7108 to look down upon our little PC-compatible boxes from a great height).
7109 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
7110 and uses that copy, rather than the current dynamic value, when
7111 it's trying to decide whether to truncate output. Thus e.g.
7112 (let ((*print-lines* 50))
7113 (pprint-logical-block (stream nil)
7115 (let ((*print-lines* 8))
7116 (print (aref possiblybigthings i) stream)))))
7117 should now truncate the logical block only at 50 lines, instead of
7118 often truncating it at 8 lines, as it did before.
7119 * The doc/cmucl/ directory, containing old CMU CL documentation
7120 from the time of the fork, is no longer part of the base system.
7121 SourceForge has shut down its anonymous FTP service, and with it
7122 my original plan for distributing the old CMU CL documentation
7123 there. For now, if you need these files you can download an old
7124 SBCL source release and extract them from it.
7125 * The fasl file version number changed again, for dozens of reasons,
7126 some of which are apparent above.
7128 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
7129 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
7130 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
7131 patch, so that DISASSEMBLE output is much nicer.
7132 * The code in the SB-PROFILE package now seems reasonably stable.
7133 I still haven't decided what the final interface should look like
7134 (I'd like PROFILE to interact cleanly with TRACE, since both
7135 facilities use function encapsulation) but if you have a need
7136 for profiling now, you can probably use it successfully with
7137 the current CMU-CL-style interface.
7138 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
7139 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
7140 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
7141 link now returns the dangling link itself, and for similar
7142 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
7143 link itself. (In these cases the old code signalled an error and
7144 looped endlessly, respectively.) Thus, DIRECTORY now works even
7145 in the presence of dangling and cyclic symbolic links.
7146 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
7147 is now a supported extension again, since the consensus on
7148 sbcl-devel was that it can be useful for ordinary development
7149 work, not just for debugging SBCL itself.
7150 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
7151 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
7152 that currently-defined functions might be redefined later with
7153 different return types.
7154 * Hash tables can be printed readably, as inspired by CMU CL code
7155 of Eric Marsden and SBCL code of Martin Atzmueller.
7156 * better error handling in CLOS method combination, thanks to
7157 Martin Atzmueller porting Pierre Mai's CMU CL patches
7158 * more overflow fixes for >16Mbyte I/O buffers
7159 * A bug in READ has been fixed, so that now a single Ctrl-D
7160 character suffices to cause end-of-file on character streams.
7161 In particular, now you only need one Ctrl-D at the command
7162 line (not two) to exit SBCL.
7163 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
7165 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
7166 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
7167 does the right thing.
7168 * The implementation of some type tests, especially for CONDITION
7169 types, is now tidier and maybe faster, due to CMU CL code
7170 originally by Douglas Crosher, ported by Martin Atzmueller.
7171 * Some math functions have been fixed, and there are new
7172 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
7173 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
7174 * (There are also some new optimizers in contrib/*-extras.lisp. Those
7175 aren't built into sbcl-0.6.13, but are a sneak preview of what's
7176 likely to be built into sbcl-0.7.0.)
7177 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
7178 CL, ported to SBCL by Martin Atzmueller)
7179 * DESCRIBE now gives more information in some cases. (Pierre Mai's
7180 patch to CMU CL, ported to SBCL by Martin Atzmueller)
7181 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
7182 * There's a new slam.sh hack to shorten the edit/compile/debug
7183 cycle for low-level changes to SBCL itself, and a new
7184 :SB-AFTER-XC-CORE target feature to control the generation of
7185 the after-xc.core file needed by slam.sh.
7186 * minor incompatible change: The ENTRY-POINTS &KEY argument to
7187 COMPILE-FILE is no longer supported, so that now every function
7188 gets an entry point, so that block compilation looks a little
7189 more like the plain vanilla ANSI section 3.2.2.3 scheme.
7190 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
7191 returns the number of bytes consed since the system started,
7192 rather than the number consed since the first time the function
7193 was called. (The new definition parallels ANSI functions like
7194 CL:GET-INTERNAL-RUN-TIME.)
7195 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
7196 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
7197 supported. Now DIRECTORY always does the abstract Common-Lisp-y
7198 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
7199 * Fasl file version numbers are now independent of the target CPU,
7200 since historically most system changes which required version
7201 number changes have affected all CPUs equally. Similarly,
7202 the byte fasl file version is now equal to the ordinary
7205 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
7206 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
7207 is no longer recognized. I apologize for this, because it was
7208 listed in SB-EXT as a supported extension, but I found that
7209 its existing behavior was poorly specified, as well as incorrectly
7210 specified, and it looked like too much of a mess to straighten it
7211 out. I have enough on my hands trying to get ANSI stuff to work..
7212 * many patches ported from CMU CL by Martin Atzmueller, with
7213 half a dozen bug fixes in pretty-printing and the debugger, and
7214 half a dozen others elsewhere
7215 * fixed bug 13: Floating point infinities are now supported again.
7216 They might still be a little bit flaky, but thanks to bug reports
7217 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
7218 as flaky as they were.
7219 * The --noprogrammer command line option is now supported. (Its
7220 behavior is slightly different in detail from what the old man
7221 page claimed it would do, but it's still appropriate under the
7222 same circumstances that the man page talks about.)
7223 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
7224 are now supported, and enabled by default. Thus, the compiler can
7225 handle many floating point and complex operations much less
7226 inefficiently. (Thus e.g. you can implement a complex FFT
7228 * The compiler now detects type mismatches between DECLAIM FTYPE
7229 and DEFUN better, and implements CHECK-TYPE more correctly, and
7230 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
7231 thanks to patches from Martin Atzmueller.
7232 * various fixes to make the cross-compiler more portable to
7233 ANSI-conforming-but-different cross-compilation hosts (notably
7234 Lispworks for Windows, following bug reports from Arthur Lemmens)
7235 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
7236 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
7237 fixed thanks to Pierre Mai's CMU CL patches.
7238 * fixes to keep the system from overflowing internal counters when
7239 it tries to use i/o buffers larger than 16M bytes
7240 * fixed bug 45a: Various internal functions required to support
7241 complex special functions have been merged from CMU CL sources.
7242 (When I was first setting up SBCL, I misunderstood a compile-time
7243 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
7244 * improved support for type intersection and union, fixing bug 12
7245 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
7246 more obscure bugs as well
7247 * some steps toward byte-compiling non-performance-critical
7248 parts of the system, courtesy of patches from Martin Atzmueller
7249 * Christophe Rhodes has made some debian packages of sbcl at
7250 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
7251 From his sbcl-devel e-mail of 2001-04-08 they're not completely
7252 stable, but are nonetheless usable. When he's ready, I'd be happy
7253 to add them to the SourceForge "File Releases" section. (And if
7254 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
7255 * new fasl file format version number (because of changes in
7256 internal representation of (OR ..) types to accommodate the new
7257 support for (AND ..) types, among other things)
7259 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
7260 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
7262 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
7264 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
7265 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
7266 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
7267 * DESCRIBE now works on structure objects again.
7268 * Most function call argument type mismatches are now handled as
7269 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
7270 know whether the function will be redefined before the call is
7271 executed. (The compiler could flag local calls with full WARNINGs,
7272 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
7273 it doesn't keep track of enough information to know whether calls
7274 are local in this sense.)
7275 * Compiler output is now more verbose, with messages truncated
7276 later than before. (There should be some supported way for users
7277 to override the default verbosity, but I haven't decided how to
7278 provide it yet, so this behavior is still controlled by the internal
7279 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
7280 src/compiler/ir1util.lisp.)
7281 * Fasl file format version numbers have increased again, because
7282 support for the Gray streams extension changes the layout of the
7283 system's STREAM objects.
7284 * The Gray subclassable streams extension now works, thanks to a
7285 patch from Martin Atzmueller.
7286 * The full LOAD-FOREIGN extension (not just the primitive
7287 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
7288 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
7289 but like most other programs, it defaults to copying the Unix
7290 environment from the original process instead of starting the
7291 new process in an empty environment.
7292 * Extensions which manipulate the Unix environment now support
7293 an :ENVIRONMENT keyword option which doesn't smash case or
7294 do other bad things. The CMU-CL-style :ENV option is retained
7295 for porting convenience.
7296 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
7297 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
7299 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
7301 * A patch from Martin Atzmueller seems to have solved the SIGINT
7302 problem, and as far as we know, signal-handling now works cleanly.
7303 (If you find any new bugs, please report them!)
7304 * The system no longer defaults Lisp source file names to types
7305 ".l", ".cl", or ".lsp", but only to ".lisp".
7306 * The compiler no longer uses special default file extensions for
7307 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
7308 seems to expect a single default extension for all compiled code,
7309 and there's no compelling reason to try to stretch the standard
7310 to allow two different extensions.) Instead, byte-compiled files
7311 default to the same extension as native-compiled files.
7312 * Fasl file format version numbers have increased again, because
7313 a rearrangement of internal implementation packages made some
7314 dumped symbols in old fasl files unreadable in new cores.
7315 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
7316 many fewer weird special cases.
7317 * Bug #17 (differing COMPILE-FILE behavior between logical and
7318 physical pathnames) has been fixed, and some related misbehavior too,
7319 thanks to a patch from Martin Atzmueller.
7320 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
7321 by Tim Moore, ported to SBCL by Martin Atzmueller.
7322 * Martin Atzmueller fixed several filesystem-related problems,
7323 including bug #36, in part by porting CMU CL patches, which were
7324 written in part by Paul Werkowski.
7325 * More compiler warnings in src/runtime/ are gone, thanks to
7326 more patches from Martin Atzmueller.
7327 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
7330 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
7332 * DESCRIBE now works on CONDITION objects.
7333 * The debugger now handles errors which arise when trying to print
7334 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
7336 * The build system now uses an additional file, customize-target-features.lisp,
7337 to allow local modifications to the target *FEATURES* list. (The point of
7338 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
7339 debugging features enabled, without having to worry about propagating it
7340 into everyone's system when I do a "cvs update".) When no
7341 customize-target-features.lisp file exists, the target *FEATURES* list
7342 should be constructed the same way as before.
7343 * fixed bugs in DEFCONSTANT ANSI-compatibility:
7344 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
7345 warn about behavior which is undefined under the ANSI spec. Note: This
7346 is specified by ANSI, but it's not very popular with programmers.
7347 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
7348 macro in the SBCL sources for an example of a workaround which you
7349 might use to make portable ANSI-standard code which does what you want.
7350 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
7351 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
7352 when it's used as a non-toplevel form. (This is required in order
7353 to implement the DEFCONSTANT-EQX macro.)
7354 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
7355 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
7356 funny things, due to bugs in the implementation of EVAL-WHEN
7357 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
7358 non-toplevel DEFCONSTANTs are uncommon.)
7359 * The core file version number and fasl file version number have been
7360 incremented, because the old noncompliant DEFCONSTANT behavior involved
7361 calling functions which no longer exist, and because I also took the
7362 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
7363 * fixed bug 1 (error handling before read-eval-print loop starts), and
7364 redid debugger restarts and related debugger commands somewhat while
7366 ** The QUIT debugger command is gone, since it did something
7367 rather different than the SB-EXT:QUIT command, and since it never
7368 worked properly outside the main toplevel read/eval/print loop.
7369 Invoking the new TOPLEVEL restart provides the same functionality.
7370 ** The GO debugger command is also gone, since you can just invoke
7371 the CONTINUE restart directly instead.
7372 ** The TOP debugger command is also gone, since it's redundant with the
7373 FRAME 0 command, and since it interfered with abbreviations for the
7375 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
7377 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
7378 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
7379 some porting work by Martin Atzmueller)
7380 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
7381 with a boatload of patches which he ported to SBCL. Now that those
7383 ** The system tries to make sure that its low-priority messages
7384 are prefixed by semicolons, to help people who like to use
7385 syntax highlighting in their ILISP buffer. (This patch
7386 was originally due to Raymond Toy.)
7387 ** The system now optimizes INTEGER-LENGTH better, thanks to more
7388 patches originally written by Raymond Toy.
7389 ** The compiler understands coercion between single-value and
7390 multiple-VALUES type expressions better, getting rid of some very
7391 weird behavior, thanks to patches originally by Robert MacLachlan
7392 and Douglas Crosher.
7393 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
7394 lambda lists, thanks to a patch originally by Pierre Mai.
7395 ** The system no longer bogusly warns about "abbreviated type
7397 ** The compiler gets less confused by inlining and RETURN-FROM,
7398 thanks to some patches originally by Tim Moore.
7399 ** The system no longer hangs when dumping circular lists to fasl
7400 files, thanks to a patch originally from Douglas Crosher.
7401 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
7402 undefined function error.
7403 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
7404 in structure slot initforms) for now, documented workaround instead:-|
7405 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
7406 * fixed bug 5: added stubs for various Gray stream functions called
7407 in the not-a-CL:STREAM case, so that even when Gray streams aren't
7408 installed, at least appropriate type errors are generated
7409 * fixed bug 8: better reporting of various PROGRAM-ERRORs
7410 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
7411 consistently in DEFMETHOD forms.
7412 * removed bug 21 from BUGS, since Martin Atzmueller points out that
7413 it doesn't seem to affect SBCL after all
7414 * The C runtime system now builds with better optimization and many
7415 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
7417 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
7419 * The system is now under CVS at SourceForge (instead of the
7420 CVS repository on my home machine).
7421 * The new signal handling code has been tweaked to treat register
7422 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
7423 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
7424 downstream, e.g. in debug-int.lisp, has implicit dependencies
7425 on the unsignedness of integer representation of machine words,
7426 and that caused the system to bomb out with infinite regress
7427 when trying to recover from type errors involving signed values,
7428 e.g. (BUTLAST '(1 2 3) -1).)
7429 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
7430 (This was one of the bugs Peter Van Eynde reported back in July.)
7431 * The system now uses code inspired by Colin Walters' O(N)
7432 implementation of MAP (from the cmucl-imp@cons.org mailing
7433 list, 2 September 2000) when it can't use a DEFTRANSFORM to
7434 inline the MAP operation, and there is more than one
7435 sequence argument to the MAP call (so that it can't just
7436 do ETYPECASE once and for all based on the type of the
7437 single sequence argument). (The old non-inline implementation
7438 of the general M-argument sequence-of-length-N case required
7439 O(M*N*N) time when any of the sequence arguments were LISTs.)
7440 * The QUIT :UNIX-CODE keyword argument has been renamed to
7441 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
7442 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
7444 * Raymond Wiker's patches to port dynamic loading from Linux to
7445 FreeBSD have been added.
7446 * The BUGS file is now more nearly up to date, thanks in large part
7447 to Martin Atzmueller's review of it.
7448 * The debugger now flushes standard output streams before it begins
7449 its output ("debugger invoked" and so forth).
7450 * The core version number and fasl file version number have both
7451 been incremented, because of incompatible changes in the layout
7453 * FINISH-OUTPUT is now called more consistently on QUIT. (It
7454 used to not be called for a saved Lisp image.)
7455 * Martin Atzmueller's version of a patch to fix a compiler crash,
7456 as posted on sbcl-devel 13 September 2000, has been installed.
7457 * Instead of installing Martin Atzmueller's patch for the
7458 compiler transform for SUBSEQ, I deleted the compiler transform,
7459 and transforms for some similar consing operations.
7460 * A bug in signal handling which kept TRACE from working on OpenBSD
7462 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
7463 away by constant folding
7464 * The system now defines its address space constants in one place
7465 (in the Lisp sources), and propagates them automatically elsewhere
7466 (through GENESIS and the sbcl.h file). Therefore, patching the
7467 address map is less unnecessarily tedious and error-prone. The
7468 Lisp names of address space constants have also been systematized.
7469 * CVS tags like dollar-Header-dollar have been removed from
7470 the sources, because they have never saved me trouble and
7471 they've been source of trouble working with patches and other
7472 diff-related operations.
7473 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
7474 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
7476 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
7478 * The system has been ported to OpenBSD.
7479 * The system now compiles with a simple "sh make.sh" on the systems
7480 that it's supported on. I.e., now you no longer need to tweak
7481 text in the target-features.lisp-expr and symlinks in src/runtime/
7482 by hand, the make.sh takes care of it for you.
7483 * The system is no longer so grossly inefficient when compiling code
7484 involving vectors implemented as general (not simple) vectors (VECTOR T),
7485 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
7486 which dares to use the various sequence functions on non-simple
7487 vectors, takes less of a performance hit.
7488 * There is now a primitive type predicate VECTOR-T-P
7489 to test for the (VECTOR T) type, so that e.g.
7490 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
7491 can now be compiled with some semblance of efficiency. (The old code
7492 turned the type declaration into a full call to %TYPEP at runtime!)
7493 * AREF on (VECTOR T) is still not fast, since it's still compiled
7494 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
7495 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
7496 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
7497 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
7498 without making full calls to SUBTYPEP at runtime.
7499 (Some analogous efficiency issues for non-simple vectors specialized to
7500 element types other than T, or for non-simple multidimensional arrays,
7501 have not been addressed. They could almost certainly be handled the
7502 same way if anyone is motivated to do so.)
7503 * The changes in array handling break binary compatibility, so
7504 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
7505 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
7506 instead of (VALUES T T).
7507 * By following the instructions that Dan Barlow posted to sbcl-devel
7508 on 2 July 2000, I was able to enable primitive dynamic object
7509 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
7510 functionality is not implemented (since it calls ld to resolve
7511 library references automatically, requiring RUN-PROGRAM for its
7512 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
7513 try to resolve library references) is now supported.
7514 * The system now flushes the standard output streams when it terminates,
7515 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
7516 them at several other probably-convenient times, e.g. in each pass of
7517 the toplevel read-eval-print loop, and after evaluating a form given
7518 as an "--eval" command-line option. (These changes were motivated by a
7519 discussion of stream flushing issues on cmucl-imp in August 2000.)
7520 * The source transform for TYPEP of array types no longer assumes
7521 that an array whose element type is a not-yet-defined type
7522 is implemented as an array of T, but instead punts, so that the
7523 type will be interpreted at runtime.
7524 * There is now some support for cross-compiling in make.sh: each of
7525 the phases of make.sh has its own script. (This should be transparent
7526 to people doing ordinary, non-cross-compile builds.)
7527 * Since my laptop doesn't have hundreds of megabytes of memory like
7528 my desktop machine, I became more motivated to do some items on
7529 my to-do list in order to reduce the size of the system a little:
7530 ** Arrange for various needed-only-at-cold-init things to be
7531 uninterned after cold init. To support this, those things have
7532 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
7533 symbols with such names are now uninterned after cold init).
7534 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
7535 fasl files for cold load.
7536 ** Remove the old compiler structure pooling code (which used to
7537 be conditional on the target feature :SB-ALLOC) completely.
7538 ** Redo the representation of some data in cold init to be more compact.
7539 (I also looked into supporting byte compiled code at bootstrap time,
7540 which would probably reduce the size of the system a lot, but that
7541 looked too complicated, so I punted for now.)
7542 * The maximum signal nesting depth in the src/runtime/ support code has
7543 been reduced from 4096 to 256. (I don't know any reason for the very
7544 large old value. If the new smaller value turns out to break something,
7545 I'll probably just bump it back up.)
7546 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
7548 * Many, many bugs reported by Peter Van Eynde have been added to
7549 the BUGS list; some have even been fixed.
7550 * While enabling dynamic object file loading, I tried to make the
7551 code easier to understand, renaming various functions and variables
7552 with less ambiguous names, and changing some function calling
7553 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
7554 * While trying to figure out how to do the OpenBSD port, I tried to
7555 clean up some of the code in src/runtime/. In particular, I dropped
7556 support for non-POSIX signal handling, added various comments,
7557 tweaked the code to reduce the number of compilation warnings, and
7558 renamed some files to increase consistency.
7559 * To support the new automatic configuration functionality in make.sh,
7560 the source file target-features.lisp-expr has been replaced with the
7561 source file base-target-features.lisp-expr and the machine-generated
7562 file local-target-features.lisp-expr.
7563 * fixed a stupid quoting error in make.sh so that using CMU CL
7564 "lisp -batch" as cross-compilation host works again
7566 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
7568 * DESCRIBE no longer tries to call itself recursively to describe
7569 bound/fbound values, so that it no longer fails on symbols which are
7570 bound to themselves (like keywords, T, and NIL).
7571 * DESCRIBE now works on generic functions.
7572 * The printer now prints less-screwed-up representations of closures
7573 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
7574 * A private symbol is used instead of the :EMPTY keyword previously
7575 used to mark empty slots in hash tables. Thus
7576 (DEFVAR *HT* (MAKE-HASH-TABLE))
7577 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
7578 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
7579 now does what ANSI says that it should. (You can still get
7580 similar noncompliant behavior if bang on the hash table
7581 implementation with all the symbols you get back from
7582 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
7583 This breaks binary compatibility, since tests for equality to
7584 :EMPTY are wired into things like the macroexpansion of
7585 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
7587 * There's now a minimal placeholder implementation for CL:STEP,
7588 as required by ANSI.
7589 * An obscure bug in the interaction of the normal compiler, the byte
7590 compiler, inlining, and structure predicates has been patched
7591 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
7592 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
7594 * Missing ordinary arguments in a macro call are now detected even
7595 when the macro lambda list contains &KEY or &REST.
7596 * The debugger no longer complains about encountering the top of the
7597 stack when you type "FRAME 0" to explicitly instruct it to go to
7598 the top of the stack. And it now prints the frame you request even
7599 if it's the current frame (instead of saying "You are here.").
7600 * As specified by ANSI, the system now always prints keywords
7601 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
7603 * The default initial SIZE of HASH-TABLEs is now smaller.
7604 * Type information from CLOS class dispatch is now propagated
7605 into DEFMETHOD bodies, so that e.g.
7606 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7608 is now basically equivalent to
7609 (DEFMETHOD FOO ((X SINGLE-FLOAT))
7610 (DECLARE (TYPE SINGLE-FLOAT X))
7612 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
7613 operation, without having to do run-time type dispatch.
7614 * The macroexpansion of DEFMETHOD has been tweaked so that it has
7615 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
7616 * Since I don't seem to be making big file reorganizations very often
7617 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
7618 is overflowing my ability to conveniently back them up), I've finally
7619 checked the system into CVS. (The CVS repository is on my home system,
7620 not at SourceForge -- putting it on SourceForge might come later.)
7621 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
7622 high-level GC-NOTIFY-FOO functions send their output. (There's
7623 still very little control of where low-level verbose GC functions
7624 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
7625 less than it used to -- the GC-NOTIFY-FOO functions are now under
7626 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
7627 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
7628 in only one place in the source code, and propagates it automatically
7629 everywhere that it's needed. Thus e.g. when I bump the version from
7630 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
7631 * The C source files now include boilerplate legalese and documentation
7632 at the head of each file (just as the Lisp source files already did).
7633 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
7634 to his page will be replaced with a link to his new CLiki service.
7636 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
7638 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
7639 * The build process now looks for GNU make under the default name "gmake",
7640 instead of "make" as it used to. If GNU make is not available as "gmake"
7641 on your system, you can change this default behavior by setting the
7642 GNUMAKE environment variable.
7643 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
7644 can build without error under CMU CL.
7646 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
7648 * There is now a partial SBCL user manual (with some new text and some
7649 text cribbed from the CMU CL manual).
7650 * The beginnings of a profiler have been added (starting with the
7651 CMU CL profiler and simplifying and cleaning up). Eventually the
7652 main interface should be through the TRACE macro, but for now,
7653 it's still accessed through vaguely CMU-CL-style functions and macros
7654 exported from the package SB-PROFILE.
7655 * Some problems left over from porting CMU CL to the new
7656 cross-compilation bootstrap process have been cleaned up:
7657 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
7658 instead of SB!XC:DEFMACRO, compounded by an oversight on my
7659 part when getting rid of the compiler *BACKEND* stuff.)
7660 ** The value of *NULL-TYPE* was screwed up, because it was
7661 being initialized before the type system knew the final
7662 definition of the 'NULL type. This screwed up several key
7663 optimizations in the compiler, causing inefficiency in all sorts
7664 of places. (I found it because I wanted to understand why
7665 GET-INTERNAL-RUN-TIME was consing.)
7666 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
7667 PROCLAIM FTYPE information. Unfortunately this broke binary
7668 compatibility again, since now the forms output by DEFGENERIC
7669 to refer to functions which didn't exist in 0.6.3.
7670 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
7671 can use the new (as of 0.6.3) transform for SOME into MAP into
7673 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
7674 values to (INTEGER 0 1000000), so that the time code will no longer
7675 occasionally get blown up by Linux returning 1000000 microseconds
7676 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
7677 its output conform to the ANSI spec. (Alas, this makes its output
7678 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
7679 * A full call to MAP NIL with a single sequence argument no longer conses.
7680 * fixes to problems pointed out by Martin Atzmueller:
7681 * The manual page no longer talks about multiprocessing as though
7682 it were currently supported.
7683 * The ILISP support patches have been removed from the distribution,
7684 because as of version 5.10.1, ILISP now supports SBCL without us
7685 having to maintain patches.
7686 * added a modified version of Raymond Toy's recent CMU CL patch for
7687 EQUALP comparison of HASH-TABLE
7689 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
7691 * The system still can't cross-compile itself with
7692 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
7693 entails), but at least it can compile more of itself that way
7694 than it used to be able to, and various buglets which were uncovered
7695 by trying to cross-compile itself that way have now been fixed.
7696 * This release breaks binary compatibility again. This time
7697 at least I've incremented the FASL file format version to 2, so that the
7698 problem can be detected reliably instead of just causing weird errors.
7699 * various new style warnings:
7700 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
7701 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
7702 ** using the lexical binding of a variable named in the *FOO* style
7703 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
7704 as specified by ANSI.
7705 * *RANDOM-STATE* is no longer automatically initialized from
7706 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
7707 default behavior of the system is to repeat its behavior every time
7708 it's run. If you'd like to change this behavior, you can always
7709 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
7710 old convention there was no comparably easy way to get the system to
7711 repeat its behavior every time it was run.
7712 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
7713 FTYPE declarations has been removed, in favor of their ANSI
7714 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
7715 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
7716 the types of their sequence arguments can be determined at compile time.
7717 This is done through a new open code expansion for MAP which eliminates
7718 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
7719 argument types can be determined at compile time.
7720 * The optimizer now transforms COERCE into an identity operation when it
7721 can prove that the coerced object is already of the correct type. (This
7722 can be a win for machine generated code, including the output of other
7723 optimization transforms, such as the MAP transform above.)
7724 * Credit information has been moved from source file headers into CREDITS.
7725 * Source file headers have been made more standard.
7726 * The CASE macro now compiles without complaining even when it has
7729 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
7731 * (Note that the way that the PCL macroexpansions were rewritten
7732 to accommodate the change in DEFGENERIC below breaks binary
7733 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
7734 not run under sbcl-0.6.2. Once we get out of alpha releases,
7735 i.e. hit release 1.0.0, we'll probably try to maintain binary
7736 compatibility between maintenance releases, e.g. between sbcl-1.4.3
7737 and sbcl-1.4.4. Until then, however, it might be fairly common
7738 for maintenance releases to break binary compatibility.)
7739 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
7741 * The reporting of unhandled signals has been changed to print some
7742 explanatory text as well as the report form. (Previously only
7743 the report form was printed.)
7744 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
7745 it defines, so that the compiler no longer issues undefined function
7746 warnings for compiled-but-not-yet-loaded generic functions.
7747 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
7748 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
7749 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
7750 section of the ANSI spec are supported.
7751 * The "" nickname for the "KEYWORD" package has been removed.
7752 The reader still handles symbol tokens which begin with a package marker
7753 as keywords, but it doesn't expose its mechanism for doing so in the
7754 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
7755 * The system now issues STYLE-WARNINGs for contradictory TYPE
7756 proclamations. (Warnings for contradictory FTYPE proclamations would
7757 be nice too, but those can't be done usefully unless the type system
7758 is made smarter about FUNCTION types.)
7759 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
7760 systematized, so that "*target-*.lisp is supposed to exist only on the
7761 target and imply that there's a related file which exists on the
7762 host, and *host-*.lisp is supposed to exist only on the host and imply
7763 that there's a related file which exists on the target. This involves a
7764 lot of renaming. Hopefully the acute confusion caused by the renaming
7765 will be justified by the reduction in chronic confusion..
7766 ** runtime-type.lisp -> early-target-type.lisp
7767 ** target-type.lisp -> late-target-type.lisp
7768 ** early-host-format.lisp -> early-format.lisp
7769 ** late-host-format.lisp -> late-format.lisp
7770 ** host-error.lisp -> misc-error.lisp
7771 ** early-error.lisp -> early-target-error.lisp
7772 ** late-error.lisp -> late-target-error.lisp
7773 ** host-defboot.lisp -> early-defboot.lisp
7774 ** code/misc.lisp -> code/target-misc.lisp
7775 ** code/host-misc.lisp -> code/misc.lisp
7776 ** code/numbers.lisp -> code/target-numbers.lisp
7777 ** code/early-numbers.lisp -> numbers.lisp
7778 ** early-host-type.lisp -> early-type.lisp
7779 ** late-host-type.lisp -> late-type.lisp
7780 ** host-typep.lisp -> typep.lisp
7781 ** load.lisp -> target-load.lisp
7782 ** host-load.lisp -> load.lisp
7783 ** host-disassem.lisp -> disassem.lisp
7784 ** host-insts.lisp -> insts.lisp
7785 ** byte-comp.lisp -> target-byte-comp.lisp
7786 ** host-byte-comp.lisp -> byte-comp.lisp
7787 ** host-signal.lisp -> signal.lisp
7788 ** host-defstruct.lisp -> defstruct.lisp
7789 ** late-target-type.lisp -> deftypes-for-target.lisp
7790 Furthermore, several other previously target-only files foo.lisp (e.g.
7791 hash-table.lisp and random.lisp) have been split into a target-and-host
7792 foo.lisp file and a target-only target-foo.lisp file, with their key type
7793 definitions in the target-and-host part, so that the cross-compiler will
7794 know more about target types.
7795 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
7796 gone away. In their place are various *BACKEND-FOO* variables
7797 corresponding to the slots of the old structure.
7798 * A bug which caused the SB-COLD bootstrap-time package to be propagated
7799 into the target SBCL has been fixed.
7800 * The chill.lisp system for loading cold code into a running SBCL
7802 * Support for the CMU CL "scavenger hook" extension has been removed.
7803 (It was undocumented and unused in the CMU CL sources that SBCL was
7804 derived from, and stale in sbcl-0.6.1.)
7805 * Various errors in the cross-compiler type system were detected
7806 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
7807 (enabling various consistency checks). Many of them were fixed,
7808 but some hard problems remain, so the compiler is back to
7809 running without *TYPE-SYSTEM-INITIALIZED* for now.
7810 * As part of the cross-compiler type system cleanup, I implemented
7811 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
7812 * I have started adding UNCROSS calls throughout the type system
7813 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
7814 on cross-compiler input files will be able to go away, and various
7816 * CONSTANTP now returns true for quoted forms (as explicitly required
7819 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
7821 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
7822 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
7823 (MAKE-LIST -1). In the longer term, it ought to become true
7824 that declarations are assertions even at SAFETY 1. For now, it's not
7825 quite true even at SAFETY 3, but it's at least more nearly true..
7826 (Note that this change seems to increases the size of the system by
7827 O(5%) and to decrease the speed of the compiler by 20% or more.)
7828 * changed ALIEN printing to be much more abbreviated, as a short-term fix
7829 for the problem of printing dozens of lines of distracting information
7830 about low-level system machinery as part of the top stack frame
7831 on entry to the debugger when an undefined function was called.
7832 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
7833 is not reset to COMMON-LISP-USER.
7834 * Compilation of stuff related to dyncount.lisp has been made conditional
7835 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
7836 smaller. The various dyncount-related symbols have been moved into
7837 a new "SB-DYNCOUNT" package.
7838 * tty-inspect.lisp has been renamed to inspect.lisp.
7839 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
7840 feature has gone away. (When we eventually port to other flavors of
7841 libc and/or Unix, we'll try to make the differences between flavors
7842 invisible at the user level.)
7843 * Various other *FEATURES* tags, and/or their associated conditionals,
7844 have been removed if obsolescent, or given better documentation, or
7845 sometimes given more-mnemonic names.
7847 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
7849 * tidied up "make.sh" script
7850 * tidied up system directory structure
7851 * better "clean.sh" behavior
7852 * added doc/FOR-CMUCL-DEVELOPERS
7853 * many many small tweaks to output format, e.g. removing possibly-confusing
7854 trailing #\. character in DESCRIBE-INSTANCE
7855 * (EQUALP #\A 'A) no longer signals an error.
7856 * new hashing code, including EQUALP hashing
7857 * tidied up Lisp initialization and toplevel
7858 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
7859 * command line argument processing
7860 * added POSIX-GETENV function to deal with Unix-ish environment variables
7861 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
7862 terminating SBCL on EOF
7863 * non-verbose GC by default
7864 * There is no more "sbcl" shell script; the sbcl file is now the C
7865 runtime executable (just like CMU CL).
7866 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
7868 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
7869 symbol and package information as Lisp native symbol and package objects
7870 instead of strings naming symbols and strings naming packages. This way,
7871 whenever packages are renamed (as in warm init), debug information is
7872 transformed along with everything else.
7873 * tweaked the optimization policy declarations which control the building
7874 of SBCL itself. Now, among other things, the system no longer saves
7875 source location debugging information. (This helps two problems at once
7876 by reducing SBCL size and by keeping SBCL from trying to look for its
7877 sources -- which may not exist -- when reporting errors.)
7878 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
7879 debugging and testing purposes
7880 * cleaned up printing, making the printer call PRINT-OBJECT for
7881 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
7882 methods, giving nearly-ANSI behavior
7883 * converted almost all special variables to use *FOO* naming convention
7884 * deleted PARSE-TIME functionality, since it can be done portably
7885 * moved some files out of cold init into warm init
7886 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
7888 * regularized formatting of source files
7889 * added an install.sh script
7890 * fixed ridiculous memory usage of cross-compiler by making
7891 compiler/alloc.lisp not try to do pooling unless it can hook
7892 itself into the GC of the cross-compilation host. Now the system
7893 builds nicely on my old laptop.
7894 * added :SB-ALLOC in target-features.lisp-expr
7895 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
7896 was not implemented)
7897 * re-did condition handling and note reporting in the compiler. Notes
7898 are no longer handled by signalling conditions. Style warnings
7899 and warnings are handled more correctly and reported in such a way
7900 that it's easy to find one or the other in your output (so that you
7901 can e.g. figure out which of many problems caused COMPILE-FILE to
7903 * changed the severity of several compiler warnings from full WARNING
7904 to STYLE-WARNING in order to conform with the ANSI spec; also changed
7905 compiler note reporting so that it doesn't use the condition system
7906 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
7907 COMPILE-FILE command)
7908 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
7909 function. As a consequence, START-BLOCK and END-BLOCK declarations are
7910 no longer supported, since their implementation was deeply intertwingled
7911 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
7912 * removed bogus "support" for compiler macros named (SETF FOO), and
7913 removed the compiler macro for SETF INFO (but only after making a fool
7914 of myself on the cmucl-imp mailing list by posting a bogus patch for
7915 DEFINE-COMPILER-MACRO..)
7916 * Compiled files containing forms which have side effects on the Lisp
7917 reader (such as DEFPACKAGE forms) are now handled more correctly.
7918 (Compiler queuing of top level lambdas has been suppressed by setting
7919 *TOP-LEVEL-LAMBDA-MAX* to 0. )
7920 * deleted various currently-unused source files, e.g. gengc.lisp. They
7921 may be added back at some point e.g. when porting to other architectures,
7922 but until they are it's distracting to distribute them and to try to
7924 * deleted "UNCROSS couldn't recurse through.." style warnings, since
7925 there were so many of them they're just distractions, and UNCROSS is
7926 known to be able to handle the current sources
7927 * moved PROFILE functionality into TRACE, so that it will be clear
7928 how the wrapping and unwrapping of functions when you profile them
7929 interacts with the wrapping and unwrapping of functions when you
7930 trace them. (Actually, the functionality isn't there yet, but at least
7931 the interface specification is there. Hopefully, the functionality will
7932 arrive with some future maintenance release.)
7933 * removed host-oops.lisp
7934 * changed signature of QUIT function to allow UNIX-CODE argument
7935 * fixed READ-SEQUENCE bug
7936 * tweaked verbose GC output so that it looks more like the progress
7937 output that ANSI specifies for functions like LOAD
7938 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
7939 * added <http://sbcl.sourceforge.com> to the banner information printed by