1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.1.12:
3 * optimization: better distribution of SXHASH over small conses of related
5 * other improvements to SXHASH:
6 ** use the whole of the positive-fixnum range for SXHASH of fixnums
7 * enhancement: The error message when calling an undefined alien function
8 includes the name of the function on x86-64.
9 * enhancement: sb-ext:run-program now supports :environment on Windows.
10 * enhancement: ASDF is no longer required to load contribs at runtime.
12 * bug fix: forward references to classes in fasls can now be loaded.
14 * bug fix: don't warn on a interpreted->compiled function redefinition
15 from the same location. (patch by Douglas Katzman, lp#1042405)
16 * bug fix: Create vectors of proper internal length when reading literal
17 vectors from FASLs. (Reported by Jan Moringen)
18 * bug fix: COMPILE can now succefully compile setf functions.
19 (Reported by Douglas Katzman)
20 * bug fix: run-program performs more correct escaping of arguments on
22 * bug fix: function-lambda-expression on generic functions returns the
24 * bug fix: (the [type] [constant]) now warns when [constant] matches
25 [type] except for the number of values. (Reported by Nathan Trapuzzano
27 * bug fix: signal errors in required cases of slot-definition initialization
30 changes in sbcl-1.1.12 relative to sbcl-1.1.11:
31 * enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
32 shutdown(3). (thanks to Jan Moringen, lp#1207483)
33 * enhancement: document extensible sequences. (thanks to Jan Moringen,
35 * optimization: EQUAL and EQUALP transforms are smarter.
36 (thanks to Elias Martenson, lp#1220084)
37 * optimization: CHAR-EQUAL is faster for constant and base-char arguments.
38 * bug fix: probe-file now can access symlinks to pipes and sockets in
39 /proc/pid/fd on Linux. (reported by Eric Schulte)
40 * bug fix: SBCL can now be built on Solaris x86-64.
41 * bug fix: Floating point exceptions do not persist on Solaris anymore.
42 * bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
43 * bug fix: handle compiler-error in LOAD when it's not run from inside EVAL.
45 * bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base.
46 (thanks to Stephan Frank)
47 * bug fix: space allocation of result bignums in SB-GMP is more accurate.
48 (thanks to Stephan Frank, lp#1206191)
49 * bug fix: sb-safepoint can now reliably handle signal interruptions of
50 foreign code. (lp#1133018)
51 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
52 constructors no longer fails to merge actual and default initargs
53 (thanks to Jan Moringen, lp#1179858)
54 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
55 constructors handles non-KEYWORD initialization arguments more correctly.
56 * bug fix: loading the SB-SIMPLE-STREAMS contributed module no longer
57 clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, lp#884603)
58 * bug fix: class definitions with CPLs inconsistent with their metaclasses
59 are less likely to destroy the object system's integrity. (lp#309076)
60 * bug fix: restart clause parsing in RESTART-CASE is more in line with the
61 standard. (lp#1203585, thanks to Jan Moringen)
62 * bug fix: silence a note from RESTART-CASE under high-SPEED optimization
63 settings. (lp#1023721)
64 * bug fix: getting the order of arguments to
65 SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error
66 rather than a failed AVER. (reported by Paul Nathan)
67 * bug fix: Parsing of &optional/&key/&rest arguments now never overwrites
68 arguments during copying on x86 and x86-64; it may still happen on other
69 platforms when there are more fixed arguments than stack slots.
70 (reported by Jan Moringen)
72 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
73 * enhancement: support building the manual under texinfo version 5.
75 * enhancement: Windows builds no longer display the "Kitten of Death" message.
76 A warning is instead appended to the regular banner, and may be muted with
77 --noinform. (lp#728247)
78 * enhancement: support building under new linker handling of syscalls under
79 NetBSD. (thanks to Robert Swindells)
80 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
81 (regression since 1.1.9)
82 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
83 compiler macro. (thanks to Douglas Katzman).
84 * bug fix: signal a warning when defining a setf-function when a
85 setf-expander is already present. (thanks to Douglas Katzman).
86 * bug fix: improved threading on PPC.
87 * bug fix: ROOM works again on Windows. (lp#1206456)
88 * bug fix: Streams were flushed even when there was one byte still left in
89 the buffer. (lp#910213)
90 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
91 either NIL or :ERROR. (reported by Jan Moringen)
93 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
94 * enhancement: ASDF has been updated to 3.0.2.
95 * optimization: stack frames are packed more efficiently on x86oids, which
96 ought to reduce the frequency of Methuselahn conservative references (it
97 certainly helps with gc.impure.lisp / BUG-936304 on x86).
98 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
99 recognized in modular arithmetic contexts, and compile to native negate,
100 rather than going through bignums only to keep the low bits.
101 * bug fix: Compiling potential modularic arithmetic forms does not cause type
102 errors when some integer types lack lower or upper bounds. (lp#1199127)
103 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
104 bitwidth before being used in a non-modular context. (lp#1199428)
105 * bug fix: Multiple catch/unwind blocks in a single function are now
106 allocated in the right stack order on win32. (lp#1072739)
108 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
109 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
110 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
111 * enhancement: disassemble now annotates some previously missing static
112 functions, like LENGTH.
113 * enhancement: clean.sh now also cleans doc/internals.
114 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
115 print a symbol with a package prefix.
116 * enhancement: The debugger and backtracing are more robust against buggy
117 PRINT-OBJECT methods.
118 * optimization: calls to static functions on x86-64 use less instructions.
119 * optimization: compute encode-universal-time at compile time when possible.
120 * optimization: when referencing internal functions as #'x, don't go through
121 an indirect fdefn structure.
122 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
123 * optimization: (mod fixnum) type-checks are performed using one unsigned
124 comparison, instead of two.
125 * optimization: enable more modular arithmetic transforms in the presence of
127 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
128 when the result is known to be negative.
129 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
130 * optimization: comparisons between rationals and constant floats or between
131 integers and constant ratios are now converted to rationals/integers at
133 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
134 * bug fix: problems with NCONC type derivation (reported by Jerry James).
135 * bug fix: EXPT type derivation no longer constructs bogus floating-point
136 types. (reported by Vsevolod Dyomkin)
137 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
138 addrinfo. (lp#1187041, patch by Jerry James)
139 * bug fix: uninitialized type-error conditions can now be printed.
141 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
142 listening, allowing several tests to run in parallel.
143 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
144 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
146 * bug fix: Specialised SIMD-PACK types can be negated.
147 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
148 reported by Eric Marsden)
149 * bug fix: FP return values from foreign calls are always rounded to single
150 or double float precision on x87.
151 * bug fix: Known-safe vector access on x86oids should not fail spuriously
152 when the index is of the form (+ x constant-positive-integer).
153 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
154 * bug fix: backtrace printer no longer tries to create very large lists when
155 the arg-count register is clobberred by other code. (lp#1192929)
156 * bug fix: x86 should never signal an FP exception while boxing an FP value,
157 a situation that lands us into ldb.
159 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
160 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
161 ROOM, plus a few SB-INTROSPECT functions) has been completely
162 rewritten; it may now exhibit different bugs than before.
163 * new feature: minimal runtime/compiler intrastructure support for SSE
164 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
165 feature :sb-simd-pack. This should enable intrinsics extensions as
166 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
167 for maintaining a branch for so long.
168 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
169 the working directory of the spawned process.
170 (lp#791800) (patch by Matthias Benkard)
171 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
172 stack-allocated on PPC.
173 * enhancement: "fixed objects" can now be stack-allocated on PPC.
174 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
175 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
176 also returns VOPs which do not translate any functions, and finds
177 defoptimizer types ir2convert and stack-allocate-result.
178 * enhancement: better type derivation for APPEND, NCONC, LIST.
180 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
181 heap in a manner similar to the GC rather than its previous ad-hoc
182 scheme, and is therefore no less and possibly more accurate.
183 * fixes and enhancements related to Unicode:
184 ** the character database information has been updated to Unicode 6.2;
185 ** support for canonical and compatibility decomposition of characters has
186 been added, along with support for primary composition;
187 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
188 NFKD) has been included;
189 ** querying the character database for code points not defined by Unicode
190 gives less wrong answers (lp#1178038, reported by Ken Harris)
191 * enhancement: print intermediate evaluation results for some ASSERTed
192 expressions. (lp#789497) (patch by Alexandra Barchunova)
193 * enhancement: x86-64 disassemblies are annotated with unboxed constant
194 values when there are references to (RIP-relative) unboxed constants.
195 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
196 of quadratically with the size of the input in the worst case.
198 * bug fix: handle errors when initializing *default-pathname-defaults*,
199 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
200 decoding errors, or directories being deleted.
201 * bug fix: Loading a core with a discontiguous dynamic space now correctly
202 computes the amount of dynamic space used.
203 * bug fix: disassembler missing ",8" on SHLD
204 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
205 that provide an "invalid" stack frame link for the signal handler
206 itself now use the saved-fp-and-pc mechanism to pick up from the stack
207 frame in the interrupt (signal) context. This is known to affect
208 threaded FreeBSD/x86-64.
209 * bug fix: some LOOP statements couldn't be compiled.
211 * bug fix: sb-sequence:dosequence works on literal vectors.
212 * bug fix: errors in generic arithmetic show the assembly routine's
213 caller on x86 and x86-64. (lp#800343)
214 * bug fix: Compile-time type errors should never result in COMPILE-FILE
216 * bug fix: Known bad local calls do not cause strange failures when
217 emitting or dumping code. (lp#504121)
218 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
219 codegen errors: type checks are inserted as necessary. (lp#1177703)
220 * bug fix: Unsigned modular arithmetic is correctly converted into signed
221 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
222 * bug fix: a combination of inlined local function with &optional and
223 recursion no longer causes undescriptive compiler errors. (lp#1180992)
224 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
225 when testing for non-zero-ness.
226 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
228 * bug fix: Type mismatch for the value of conditional expressions are
229 correctly reported when detected at compile-time, instead of complaining
230 about a constant NIL (similar for non-EQ-comparable catch tags).
231 * bug fix: Referring to INLINE global functions as values should not result
232 in a compilation failure. (lp#1035721)
233 * optimization: faster ISQRT on fixnums and small bignums
234 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
235 * optimization: On x86-64, the number of multi-byte NOP instructions used
236 for code alignment is now always minimal.
237 * optimization: On 64-bit targets, the compiler generates much faster
238 code for type checks for types known at compile time that are smaller
239 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
240 their COMPLEX variants.
241 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
242 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
243 * optimization: ROOM no longer conses so egregiously on non-x86oid
245 * optimization: associative bitwise operations reassociate patterns like
246 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
248 * optimization: quasiquote expressions now perform more constant folding,
249 instead of consing equal lists at runtime. (lp#1026439)
250 * optimization: local call analysis of inlined higher-order function
251 should converge more quickly, resulting in better code for complex
253 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
254 integer constants are handled more cleverly, especially when they
255 can be represented as sign-extended (signed-byte 32). (Based on a
256 patch by Douglas Katzman)
257 * optimization: IF/IF conversion should reliably result in sane code
258 when (some of) the results of the inner IF are always false or
260 * optimization: On x86oids, variable right shifts of machine words are
261 compiled into straight SAR/SHR, instead of going through the generic
264 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
265 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
267 * bug fix: :allocation slot option works for condition slots
269 * bug fix: redefining conditions does not lead to multiple evaluations of
270 hairy slot initfunctions anymore (lp#1164969)
271 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
273 * bug fix: function constants now work as initforms and default initarg
274 values of conditions (lp#539517)
275 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
276 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
277 * bug fix: no more bogus ## references when pretty printing backquoted
278 forms with non-trivial structure sharing. (lp#1161218)
279 * bug fix: Don't signal an error on (setf (documentation nil 'function)
280 "doc"). Signal a style-warning instead when trying to set documentation
281 of NIL for all other documentation types. (Reported by Zach
282 Beane; regression since 2e52fa05.)
283 * bug fix: modular arithmetic involving large constants and conditionals
284 should no longer result in spurious dead code elimination. (Reported by
286 * bug fix: our mach exception handler can seemingly called very early in
287 the program execution process on OS X 10.8.0. Try and handle that case
288 robustly, without potentially leaking mach ports too much.
289 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
291 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
292 * enhancement: the continuable error when defknown-ing over extant
293 fndb entries can be ignored by passing :overwrite-fndb-silently t
294 as a keyword argument to sb-c:defknown (after attributes). Useful
295 to allow defknown to be re-loaded. Use with :allow-other-keys t
296 for backward compatibility.
297 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
299 * bug fix: Prevent a make-array transform from modifying source forms
300 causing problems for inlined code. Thanks to Bart Botta.
301 (regression since 1.0.42.11-bis)
302 * bug fix: clear-output calls the correct gray stream routine,
303 sb-gray:stream-clear-output. (lp#1153257)
304 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
306 * bug fix: Better error messages for package operations (lp#1154776)
307 * bug fix: delete-package on a nonexistent package should signal a cerror.
308 (regression since 1.0.37.44).
309 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
310 (lp#1154946, lp#1072112)
311 * bug fix: compiling make-array no longer signals an error when the
312 element-type is an uknown type, a warning is issued instead.
313 Thanks to James Kalenius (lp#1156095)
314 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
315 produces wrong results for some inputs. (Thanks to Jan Moringen.)
318 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
319 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
321 * new feature: package local nicknames. See manual for details.
322 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
323 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
324 * enhancement: easier to use restarts for resolving name-conflicts
325 resulting from IMPORT, EXPORT, or USE-PACKAGE.
326 * enhancement: variant DEFPACKAGE forms now signal a full error with
327 restarts provided for resolving the situation. (lp#891351)
328 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
329 DEFPACKAGE forms can now signal a full error with restarts provided for
330 resolving the situation. See manual for details. (lp#891351)
331 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
332 (Thanks to Anton Kovalenko.) (lp#1102748)
333 * enhancement: backtrace improvements
334 ** secondary CLOS dispatch functions have better debug names (lp#503081)
335 ** easier to read method names in backtraces. See
336 SB-DEBUG:*METHOD-FRAME-STYLE*.
337 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
338 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
339 SB-DEBUG:BACKTRACE-AS-LIST.
340 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
341 information is available in less intrusive form as frame annotations.
342 * enhancement: SB-POSIX now provides MAP-ANON.
343 * enhancement: test-suite results are colorized, failures in red, unexpected
344 success in green. Works on Windows and on terminals with ANSI escape code
345 support. Can be disabled with --no-color.
346 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
347 (thanks to James M. Lawrence)
348 * bug fix: no more unused variable style warnings from RESTART-CASE
349 macroexpansion (lp#1113859)
350 * bug fix: no more unused variable style warnings when loading
351 sb-bsd-sockets.asd (lp#1114681)
352 * bug fix: deleting a package removes it from implementation-package
353 lists of other packages.
354 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
355 This does not fix the occasional "interrupt already pending" issue, though.
356 * bug fix: (setf (documentation 'x 'function)) and
357 (setf (documentation #'x t)) set documentation in different places.
358 (regression since 1.0.43.63)
359 * bug fix: build on newer glibc. (lp#1095036)
361 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
362 * optimization: LOOP expressions using "of-type character" have slightly
363 more efficient expansions.
364 * bug fix: very long (or infinite) constant lists in DOLIST do not result
365 in very long compile times or heap exhaustion anymore. (lp#1095488)
366 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
367 * bug fix: adjust-array ignored :initial-element for simple-vectors.
369 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
370 longer cause infinite loops (on circular data) or violate eqlity
371 constraints. (lp#1099708)
372 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
374 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
375 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
377 * enhancement: support for C-c to interrupt the foreground thread
378 on Windows. (Thanks to Anton Kovalenko.)
379 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
380 * enhancement: Safepoint builds on POSIX platforms can now optionally be
381 built without pseudo-atomic sequences and their run-time overhead.
382 * enhancement: Threads created outside of Lisp can enter Lisp through
383 alien callbacks and appear as Lisp threads for the duration of that
384 function invocation. On safepoint builds only.
385 * enhancement: Miscellaneous improvements to namestrings and underlying
386 calls to OS functions for file system access on Windows. (Thanks to
388 * enhancement: The MSI installer support for Windows now uses Windows
389 Installer XML at least version 3.5 and includes various usability
390 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
391 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
392 on Windows. (Thanks to Anton Kovalenko.)
393 * enhancement: The Windows backend now supports the x86-64 platform.
394 (Thanks to Anton Kovalenko.)
395 * bug fix: fasls are now once again directly executable (on platforms
396 supporting shebang lines, with a suitably-installed sbcl).
397 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
398 * bug fix: Fix CAS access to slots of direct instances of structure classes
399 in the presence of subclasses sharing the same conc-name.
400 * bug fix: Logical pathname namestrings on Windows have been changed to
401 be lower-case, to minimize differences between POSIX and Windows.
403 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
404 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
405 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
406 (NT 5.0) is no longer being maintained.
407 * notice: Starting with this version, SBCL on Windows no longer supports
408 building with disabled thread support.
409 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
410 * enhancement: New feature sb-dynamic-core allows the runtime to be
411 rebuilt or relocated without requiring changes to the core file on
412 all linkage table platforms. Required on Windows. (Thanks to Anton
414 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
415 * enhancement: I/O on Windows unnamed pipes is interruptible
416 asynchronously using interrupt-thread, timers when running on Windows NT
417 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
419 * enhancement: Support for the experimental safepoint-based stop-the-world
420 protocol on the PowerPC platform.
421 * bug fix: Non-blocking reads from the Windows console were not necessarily
422 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
423 * bug fix: stability of threads on Windows has been improved upon through
424 an updated stop-the-world protocol (thanks to Anton Kovalenko).
426 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
427 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
428 (COMPILE and COMPILE-FILE still do.)
429 * optimization: the SPARC backend now supports the precise generational
430 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
431 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
432 * enhancement: add experimental support for the SB-THREAD feature and the
433 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
434 Threads are enabled by default, and this version of SBCL is considered
435 to be the last and final release to officially support building with
437 * optimization: The compiler no longer rotates loops in some cases where
438 this transformation actually lead to worse code being generated.
439 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
440 symbol-macros by lexical bindings.
441 * bug fix: stack allocation was prevented by high DEBUG declaration in
443 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
444 (thanks to SANO Masatoshi)
445 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
446 :JUNK-ALLOWED was true.
447 * bug fix: type derivation inferred overly conservative types for
448 unions of array types. (lp#1050768)
450 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
451 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
452 source annotation of DISASSEMBLE output. Defaults to T.
453 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
454 WAIT-P argument added to WITH-RECURSIVE-LOCK.
455 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
457 * enhancement: Optional features (not enabled by default) allow the
458 use of signals for inter-thread synchronization to be reduced on certain
459 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
460 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
461 to test these experimental features. Known remaining bugs include minor
462 thread safety issues, less timely freeing of memory by GC, and certain
463 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
464 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
465 comparisons, particularly on almost-sorted inputs.
466 * bug fix: Reading floats with large exponents no longer takes too much time
467 before reporting that the exponent is too large.
468 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
469 correctly when the received datagram is larger than the provided buffer.
470 (lp#1023438, thanks to Robert Uhl)
471 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
472 a SYMBOL-VALUE form with a constant symbol argument.
473 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
474 into a DEFCAS defined place was used as the place.
475 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
476 for from bit-vectors.
477 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
478 lead to internal errors or crashes (lp#1058799).
479 * documentation: a section on random number generation has been added to the
482 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
483 * enhancement: implicit generic function warnings now specify the package
484 in which the new generic function is being created.
485 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
486 updates of CAS-able places (similar to Clojure's swap!).
487 * enhancement: run-program no longer decodes and re-encodes environment when
488 :environment argument is not provided. (lp#985904)
489 * enhancement: errors during compiler-macro expansion no longer cause
490 runtime errors, only a compile-time warning, otherwise behaving as if
491 the compiler macro had declined to expand.
492 * optimization: On x86-64, code alignment of block headers is done with
493 multi-byte NOPs now instead of repetitions of the single-byte NOP.
494 * optimization: MAP-INTO is substantially faster when the target sequence is
495 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
496 thanks to James M. Lawrence)
497 * optimization: the compiler no longer heap-conses to check exits in cases
498 where the exit function is dynamic extent, or when it can prove the exit
499 function cannot escape. (lp#1002534)
500 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
501 element type, and vectors that aren't SIMPLE-ARRAYs.
502 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
503 speed (around 1/3 the time in some cases), and a little better in terms of
504 comparison calls. (Thanks to Takeru Ohta)
505 * bug fix: On SPARC, a limitation on the number of code constants emittable
506 by the compiler has been lifted, allowing certain long functions to
507 compiled and assembled which had previously been unsupported; fixes
508 cl-bench on this ISA (lp#1008996).
509 * bug fix: potential for infinite recursion during compilation of CLOS slot
510 typechecks when dependency graph had loops. (lp#1001799)
511 * bug fix: error forms reported with some program-errors were not escaped
513 * bug fix: functions from EVAL are now on more equal footing with functions
514 from COMPILE. (lp#1000783, lp#851170, lp#922408)
515 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
516 objects as its :METHOD-COMBINATION argument, not just lists designating
517 method combinations. (lp#936513)
518 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
520 * bug fix: restore build on solaris/sparc. (lp#1008506)
521 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
522 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
523 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
524 as keyword arguments no longer accidentally match unevaluated symbols
526 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
527 parameter was zero, now it signals an error. (lp#905817, fixed since
529 * bug fix: run-program with :pty t no longer makes the pty as the process's
531 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
534 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
535 * RANDOM enhancements and bug fixes:
536 ** bug fix: the range and distribution of random integers could be
537 catastrophically wrong when the compiler derived the type of its
538 argument as a disjoint set of small integers.
539 ** bug fix: the distribution of random integers is now completely
540 uniform even when the specified limit is not a power of two.
541 (Previously some values could be about 0.1 % more probable than
542 others in the worst case.) (lp#309467)
543 ** RANDOM on large integer arguments is generally faster and conses
544 less than before; this is visible for fixnums above a length of
545 about 24 bits, but extremely so for bignums: the old implementation
546 used time and space quadratical in the size of the argument there,
547 the new one is linear.
548 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
549 main entry point, SB-EXT:QUIT is deprecated.
550 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
551 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
552 * enhancement: FASL loading no longer grabs the world-lock.
553 * enhancement: GENCGC reclaims space more aggressively when objects being
554 allocated are a large fraction of the total available heap space.
556 * enhancement: backtraces show the correct number of arguments for frames
557 called with too many arguments.
558 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
560 * enhancement: ASDF has been updated 2.21.
561 * optimization: fewer uses of full calls to signed modular functions.
563 * optimization: typechecking alien values is typically 5 x faster.
564 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
566 * bug fix: file compilation performance issues when dumping subtypes
567 of CHARACTER (lp#994487)
568 * bug fix: fixed disassembly of some SSE instructions on x86-64.
569 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
570 OPEN. (lp#969352, thanks to Kambiz Darabi)
571 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
573 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
574 classoid even if X was not the proper name of the class. (lp#941102)
575 * bug fix: declaration leakage between lexical environments due to careless
576 use of NCONC in MAKE-LEXENV. (lp#924276)
577 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
578 *default-pathname-defaults* contains NAME or TYPE components.
579 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
580 from CL package, e.g. (loop . 10).
581 * bug fix: run-program with existent or non-existent files for :output or
582 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
583 returns NIL instead of signalling an obscure error.
584 * bug fix: fix miscompilation of some logand forms with large constant
585 arguments. (lp#974406)
586 * bug fix: account for funcallable-instance objects properly in ROOM.
587 * bug fix: incorrect octets reported for c-string decoding errors.
589 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
591 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
592 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
593 allowing faster release of memory back to the OS. (lp#991293)
594 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
595 existing deadline for the dynamic scope of its body.
596 * bug fix: compiler-internal interval arithmetic needed to be more
597 conservative about open intervals when operated on by monotonic but not
598 strictly-monotonic functions. (lp#975528)
599 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
600 it's also slightly faster. (lp#998926)
601 * bug fix: better error messages for malformed declarations.
603 * bug fix: define-condition didn't return the name of the defined condition.
605 ** improved docstrings: REPLACE (lp#965592)
607 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
608 * bug fix: fix copy-structure. When copying from stack to heap, garbage
609 could end up in the heap making GC unhappy.
610 (Thanks to James Knight, lp#911027)
612 ** SBCL can now be built using Clang.
613 ** ASDF has been updated 2.20.
614 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
615 * bug fix: don't complain about a too-hairy lexical environment for inlining
616 when the function has never been requested for inlining. (lp#963530)
618 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
619 * enhancements to building SBCL using make.sh:
620 ** --fancy can be specified to enable all supported feature enhancements.
621 ** --with-<feature> and --without-<feature> can be used to specify
622 which features to build with.
623 ** --arch option can be used to specify the architecture to build for.
624 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
625 full-blows cross-compilation.)
626 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
627 which allows specifying name of the default interning package for the
629 * enhancement: when *READ-EVAL* is true, arrays with element type other than
630 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
631 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
632 null alien when malloc() fails. (lp#891268)
633 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
634 conditions can be conveniently accessed through function with the same
635 name, analogously to CONTINUE.
636 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
637 from the printer by type, causing an error marker to be printed instead.
638 (Thanks to Attila Lendvai)
639 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
640 generally behave better when errors occur during printing.
641 * enhancement: the test runner now takes a --report-skipped-tests argument
642 to report the individual tests skipped as well as the number of skipped
644 * enhancement: undefined functions now appear in backtraces as ("undefined
645 function") instead of ("bogus stack frame") on x86oids.
646 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
647 deadlock errors are reported in an easier-to-decipher manner.
648 * enhancement: DESCRIBE on type designators reports the expansion in more
650 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
651 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
652 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
653 * enhancement: better disassembly of segment-prefixes on x86 and other
654 instruction prefixes (e.g. LOCK) on x86 and x86-64.
655 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
656 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
657 * optimization: SUBSEQ on vectors of unknown element type is substantially
659 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
660 be stack-allocated. (lp#902351)
661 * optimization: the compiler is smarter about representation selection for
662 floating point constants used in full calls.
663 * optimization: the compiler no longer refuses to coerce large fixnums to
664 single floats inline, except on x86 where this limitation is still
666 * optimization: truncation operations on integers with constant divisor
667 arguments 1 and -1 are optimized away.
668 * bug fix: deadlock detection could report the same deadlock twice, for
669 two different threads. Now a single deadlock is reported exactly once.
670 * bug fix: interval-arithmetic division during type derivation did not
671 account for signed zeros.
672 * bug fix: compiler error when typechecking a call to a function with
673 non-constant keyword arguments.
674 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
675 * bug fix: condition slot accessors no longer cause undefined function
676 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
677 form that defines them. (lp#896379)
678 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
680 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
681 bogusly report NIL, T.
682 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
683 required arguments ignored and performed assignments to others.
685 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
686 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
687 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
688 * bug fix: redefining a function whose previous definition contained an
689 unknown type no longer causes a style-warning. (lp#806243)
690 * bug fix: undefined functions now appear in backtraces as ("undefined
691 function") instead of ("bogus stack frame") on non-x86oids.
692 * bug fix: backtraces are no longer cut off at ("undefined function") when
693 called under certain circumstances (involving a caller-allocated stack
695 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
696 systems. (regression since 1.0.53)
697 * bug fix: GC deadlocks from dladdr() on certain platforms.
698 * bug fix: broken standard streams no longer automatically cause recursive
699 errors on debugger entry.
700 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
701 (regression since 1.0.53)
702 * bug fix: attempts to stack allocate a required argument to a function with
703 an external entry point caused compiler-errors.
704 * bug fix: compiler notes for failed stack allocation for a function argument
705 no longer claim to be unable to stack allocate the function.
706 * bug fix: COERCE now signals a type-error on several coercions to
707 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
708 * bug fix: missing failure-to-stack-allocate compiler notes for some
709 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
710 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
712 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
714 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
715 * minor incompatible changes:
716 ** RENAME-FILE on a symbolic links used to rename the linked-to file
718 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
719 directory, but now signal an error instead. Use TRUENAME to resolve the
720 pathname if you wish to delete the linked directory, and DELETE-FILE if
721 you wish to delete the
722 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
723 symbols associated with it will trigger a compile-time warning.
724 * thread-related enhancements:
725 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
726 Many thanks to generous donors!)
727 ** Threading is now more reliable on non-Linux platforms. We still don't
728 consider threads on non-Linux platforms good enough to enable them by
729 default, but they're in a clearly better shape now.
730 ** Deadlines supported now on all platforms.
731 ** All blocking functions in the threading API now have a :TIMEOUT
733 ** Semaphore notification objects have been added to SB-THREAD.
734 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
735 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
736 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
737 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
738 using an API anologous to defining new SETFable places.
739 * GC-related enhancements and bug fixes:
740 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
741 and Gb suffixes. Default is megabytes as before.
742 ** on GENCGC targets, the default dynamic space size is now 512Mb for
743 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
744 exception, defaulting to mere 444Mb to fit under default ulimits.) The
745 new defaults are in place to prevent hitting swap on low-end systems.
746 Use build-time option --dynamic-space-size to build an SBCL with
747 another default, or the runtime option to adjust the size at startup: a
748 good size is at most equal to the amount of physical memory the system
750 ** on GENCGC targets, nursery and generation sizes now default to 5% of
752 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
753 refuses to create SIMPLE-FUN objects.
754 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
756 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
757 validation of pointer objects as GENCGC does, instead of a
758 comparatively weak bounds-check against the heap spaces.
759 * SB-BSD-SOCKETS bug fixes:
760 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
761 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
762 systems with getaddrinfo().
763 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
764 safe outside systems with getaddrinfo().
765 * enhancement: ASDF has been updated 2.019.
766 * enhancement: special-case TCO prevention for functions which never return
767 extended to untrusted types, keeping one more frame's worth of debug
768 information around in many cases.
769 * enhancement: debug-names of anonymous and local function are more
770 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
771 * enhancement: on win32, ABS of complex floats guards better against
772 overflows. (lp#888410)
773 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
774 process exiting with code 1. (lp#676987)
775 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
776 the system where on the filesystem the SBCL sources themselves are
777 located. (Thanks to Zach Beane)
778 * enhancement: the compiler is now able to derive tighter bounds for
779 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
780 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
781 correctly, even on wide-fixnum builds. (lp#887220)
782 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
783 resolved to directories.
784 * bug fix: type mismatch when assigning to lexical variables no longer
785 result in fasl-dumping internal type objects. (lp#890750)
786 * bug fix: type mismatch on (SETF AREF) and function return values no
787 longer result in fasl-dumping internal type objects.
788 * bug fix: With several combinations of argument types, for example (EXPT
789 <integer> <(complex double)>), EXPT now uses double-precision throughout
790 instead of partially calculating only to single-precision. (lp#741564;
791 thanks to Lutz Euler)
792 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
793 objects when interrupted by GC on PPC.
795 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
796 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
797 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
798 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
799 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
800 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
801 targets is now 63 bits (up from 61).
802 * enhancement: DESCRIBE now reports a lambda-list and source location
803 for complext setf-expanders.
804 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
805 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
806 of multiple-valued places to be set to NIL, instead of signalling an
807 error (per a careful reading of CLHS 5.1.2.3).
808 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
809 * bug fix: repair crash in x86oid darwin signal handling emulation
810 when built with certain compilers.
811 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
812 rotation arguments on x86-64. (lp#882151)
813 * bug fix: low-level control flow optimisations could result in bogus
814 code in functions with tail and non-tail calls to local functions on
816 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
817 to emit literal characters > (code-char 4095), for comparisons with
819 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
820 on 64 bit platforms. (lp#881445)
821 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
822 delete the wrong file when using relative pathnames. (lp#882877)
823 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
824 sequences and :KEY NIL.
826 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
827 * enhancement: ASDF has been updated to version 2.017.
828 * enhancement: the --core command line option now accepts binaries with
830 * enhancement: when built with :sb-core-compression, core files (regular
831 or executable) can be compressed with zlib. Use the :COMPRESSION
832 argument to SAVE-LISP-AND-DIE to specify a compression level.
833 * enhancement: --[no-]merge-core-pages determines whether the runtime
834 hints the operating system that identical core pages between SBCL
835 processes should share the same physical memory. Default is to only
836 enable this for compressed cores.
837 * optimization: SLEEP no longer conses.
838 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
839 or bit-vectors when using the standard pretty-print dispatch table.
840 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
842 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
843 AREF, CHAR, etc. (lp#826971)
844 * bug fix: compiler-errors causes by integer arguments with composed of
845 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
846 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
847 expressions. (lp#770184)
848 * bug fix: complex single float literals are correctly aligned when used
849 as arguments of arithmetic operators.
850 * bug fix: on 32-bit platforms, rounding of double floats larger than a
851 fixnum is correct. (reported by Peter Keller)
852 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
853 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
855 * bug fix: redefining classes such that slots with custom allocation are
856 added or removed works again.
858 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
859 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
860 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
861 MAKE-SOCKET-STREAM if using SERVE-EVENT.
862 * enhancement: added support for socket keepalive timeout intervals
863 and probe counts on Linux.
864 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
865 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
866 * enhancement: added new toplevel options --quit and --non-interactive
868 * enhancement: the Windows port of SBCL now builds and runs on Wine
869 (thanks to Anton Kovalenko).
870 * enhancement: more, and more correct, SSE instruction definitions on
871 x86-64 (thanks to Alexander Gavrilov).
872 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
873 to help the processor execute spin loops, when applicable. Currently
874 implemented for x86 and x86-64.
875 * optimization: unsigned integer divisions by a constant are implemented
876 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
877 * optimization: improved type-derivation for LOAD-TIME-VALUE.
878 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
879 instructions. (lp#814688)
880 * bug fix: COERCE to unfinalized extended sequence classes now works.
881 (reported by Jan Moringen; lp#815155)
882 * bug fix: a compiler error during typecheck generation, reported by Eric
884 * bug fix: obsolete instance protocol fires when shared slots are added
886 * bug fix: fixed-format floating point printing with scaling factors.
888 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
889 backtraces. (lp#818460)
890 * bug fix: better backtraces for interrupted syscall frames on x86.
892 * bug fix: SSE comparison instructions can be disassembled even when one
893 operand is in memory. (lp#814702)
894 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
895 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
896 type information associated with the VALUES form.
897 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
899 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
900 first write (lp#561642).
901 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
902 * bug fix: bound propagation involving conversion of large bignums to
903 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
905 * bug fix: &REST to &MORE conversion still works in unsafe call to known
906 functions; reported by Lutz Euler (lp#826459).
907 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
910 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
911 * enhancement: errors from FD handlers now provide a restart to remove
912 the offending handler.
913 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
915 * enhancement: location of user or system initialization file can now easily
916 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
917 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
918 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
919 the thunk, as a keyword argument, :arguments.
920 * enhancement: constraint propagation is simplified (and sped up) when
921 COMPILATION-SPEED > SPEED.
922 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
923 * enhancement: debugger understands &MORE arguments better.
924 * optimization: extracting bits of a single-float on x86-64 has been
925 optimized. (lp#555201)
926 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
927 when (> SPEED SPACE).
928 * optimization: local call trampolines (x86 and x86-64) are emitted
930 * optimization: implicit value cells for dynamic-extent closed-over bindings
931 on x86 and x86-64 can hold unboxed values as well.
932 * meta-optimization: improved compilation speed, especially for large
933 functions. (lp#792363 and lp#394206)
934 * bug fix: bound derivation for floating point operations is now more
935 careful about rounding possibly closing open bounds. (lp#793771)
936 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
937 backwards incompatible change in 1.0.48.27)
938 * bug fix: occasional debugger errors in when a type-error occured in a
939 function with dynamic-extent &rest list.
940 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
941 boa-construtors can be used to initialized structure slots.
942 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
943 (lp#795705, regression)
944 * bug fix: DIRECTORY works better on logical pathnames.
945 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
946 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
947 * bug fix: the compiler no longer constant-folds NaNs in
948 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
949 * bug fix: FORMAT now handles floating point rounding correct, eg.
950 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
952 * bug fix: style warning during lambda-list introspection of generic
953 functions with both optional and key argments.
954 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
956 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
959 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
960 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
961 interrupts for its body.
962 * enhancement: source locations are now available for files loaded as
963 source, compile-time-too evaluation, and initialization files.
964 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
965 virtual source-file information, eg. overriding input-file of COMPILE-FILE
966 when a temporary file is used for compilation.
967 * enhancement: ASDF has been updated to version 2.015.3.
968 * enhancement: backtraces involving frames from the default evaluator are
970 * enhancement: RUN-PROGRAM works with user-defined binary input and output
972 * enhancement: more informative compile-time warnings and runtime errors for
973 type-errors detected at compile-time.
974 * enhancement: deadlock detection for mutexes and spinlocks.
975 * enhancement: dynamic-extent for &rest lists stack allocate only their
976 spines, not their argumets. While portable code should not rely on this,
977 particularly in combination with inlining, it should make dynamic-extent
978 easier to use safely.
979 * enhancement: SB-POSIX improvements:
980 ** WNOHANG and WUNTRACED are exported.
981 ** SYSCALL-ERROR now also provides the name of the failing system call.
982 * enhancement: --script improvements:
983 ** errors on standard input, output, and error streams are handled and
984 cause scripts to exit silently, making them easier to use in shell
986 ** backtraces from scripts now go to standard error instead of the
987 terminal even if one is available.
988 ** --script can be an argument, causing the script to be loaded from
990 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
991 strings to foreign memory.
992 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
993 a file, making it easier to understand heap dynamics.
994 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
995 allows the compiler to automatically elide rest-list allocation so long as
996 the call sites are in functions that the compiler knows cannot escape.
998 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
999 especially in safe code when none of the required arguments have changed
1001 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
1002 uninterruptible, as well as blocking reads from socket streams created
1003 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
1004 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
1005 from the to-char if the from-char is not a dispatch-macro character.
1006 * bug fix: references to undefined variables in function calls that are
1007 optimized away now signal a runtime error. (lp#722734)
1008 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
1009 types from a function defined in the same file. (regression from
1011 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
1013 * bug fix: spurious errors during QUIT when standard streams were closed.
1015 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
1016 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
1017 years, is now no longer supported.
1018 * enhancement: read() and write() have been added to SB-POSIX.
1019 * enhancement: types of DEFSTRUCT constructors are proclaimed more
1020 accurately, allowing better typechecking of call-sites.
1021 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
1022 are no longer caught. (reverted to pre 1.0.34 behaviour)
1023 * optimization: slightly faster ISQRT. (lp#713343)
1024 * bug fix: better support for Solaris /bin/sh in sh-based tests.
1025 * bug fix: TRACE behaves better when attempting to trace undefined
1026 functions. (lp#740717)
1027 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
1028 to (FUNCALL #'(LAMBDA ...) ...).
1029 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
1030 a compile-time error. (lp#720382)
1031 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
1033 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
1034 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
1035 optimization. (regression from 1.0.45.18/1.0.46.15)
1036 * bug fix: package locks did not protects against compile-time side-effects
1037 of DEFUN. (lp#675584)
1038 * bug fix: --dynamic-space-size argument is validated more carefully.
1040 * bug fix: memory fault from printing a malformed simple-condition.
1042 * bug fix: redefining classes so that slot-definition classes change now
1043 engages the obsolete instance protocol. (lp#766271)
1044 * bug fix: constant improper lists could break source coverage recording.
1046 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
1047 could exhaust stack.
1049 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
1050 * bug fix: fix mach port rights leaks in mach exception handling code on
1051 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
1053 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
1054 * enhancement: redefinition warnings for macros from different files. (lp#434657)
1055 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
1056 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
1057 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
1058 processed using EVAL -- now the appropriate toplevel form is reported instead.
1059 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
1060 declarations. (lp#726331)
1061 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
1062 that NIL/NULL is excluded from the type.
1063 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
1065 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
1066 and its compatriots.
1067 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
1068 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
1069 stack-allocated values out of their dynamic-extent. (lp#310175)
1070 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
1071 x86-64 builds caused a type-error.
1072 * bug fix: calling COMPILE with something else than a lambda-expression as the
1073 second argument reports a more sensible error. (lp#718905)
1074 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
1075 are detected. (lp#520607)
1076 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
1078 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
1079 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
1080 methods. (regression from 1.0.45.18)
1081 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
1082 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
1083 * bug fix: several foreign functions accepting string also accepted NIL and
1084 consequently caused a memory fault at 0 now signal a type-error instead.
1086 * bug fix: under rare circumstances, constraint propagation could rewrite a
1087 variable reference to refer to a variable not in scope, causing an error
1088 during physical environment analysis when attempting to close over the
1089 variable. (lp#551227)
1090 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
1092 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
1093 * enhancement: largefile support on Solaris.
1094 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
1095 arguments (lp#710017)
1096 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
1097 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
1099 * optimization: ERROR and CERROR are approximately 5 times faster.
1100 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
1101 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
1102 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
1103 up instance creation in those cases.
1104 * optimization: arithmetic operations with multiple constant arguments in now
1105 have them reduced at compile-time. (lp#676414)
1106 * optimization: determining current character position on string-streams for
1107 pretty-printing was overly slow.
1108 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
1109 lifetime analysis to overwrite closed-over variables (lp#681092).
1110 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
1111 were not handled correctly (lp#713063).
1112 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
1114 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
1115 mistake. (lp#667297).
1116 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
1117 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
1118 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
1119 unintern the wrong symbol with the same name. (lp#693796)
1120 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
1121 making it possible to restore the initial table if it has been messed up.
1124 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
1125 * enhancement: ~/ and ~user/ are treated specially in pathnames.
1126 Refer to documentation for details.
1127 * enhancement: ASDF has been updated to version 2.010.
1128 * optimization: mutated closed-over variables that are only accessed by
1129 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
1130 declared to be DYNAMIC-EXTENT) are stored directly in their containing
1131 stack frame, rather than allocating a VALUE-CELL (lp#586103).
1132 * optimization: UNWIND-PROTECT cleanup functions are now declared
1134 * bug fix: backtracing function with &REST arguments now shows the full
1135 argument list. (lp#310173)
1136 * bug fix: return types for functions with complex lambda-lists are now
1137 derived properly (lp#384892)
1138 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
1139 long string arguments slowed the compiler down to a crawl.
1140 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
1141 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
1142 in the DEFMETHOD body.
1143 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
1144 messages, being instead replaced with the corresponding function name.
1145 * bug fix: don't derive overly complex unions of numeric types for arithmetic
1146 operators. (lp#309448)
1148 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
1149 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
1150 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
1151 * enhancement: ALLOCATION-INFORMATION also provides the page the object
1153 * enhancement: default dynamic-space size can be configured at build-time
1154 without touching source, using the --dynamic-space-size argument to make.sh.
1155 * enhancement: DESCRIBE recognizes symbols naming optimization policy
1156 qualities, and mentions ALWAYS-BOUND declarations.
1157 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
1159 * enhancement: ASDF has been updated to 2.009.
1160 * enhancement: the system detects known type-erros in calls better,
1161 signalling a full warning about violated proclaimed FTYPEs and violations
1162 of derived FTYPEs within the same file, including self-calls.
1163 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
1164 * optimization: constant-folding exploits numeric and character types, in
1165 addition member types.
1166 * optimization: numeric, character and member types that are inhabited by
1167 exactly one value are tested with EQL.
1168 * optimization: more conditional branches are eliminated during IR1.
1169 Branches are simplified before performing if/if-conversion, and simple
1170 equivalent branches (that only read the same constant or variable) are
1172 * improvements to the Windows port:
1173 ** change: canonical unparsing form for pathname namestrings now uses / as
1174 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
1175 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
1176 on Windows. (thanks to Kalyanov Dmitry)
1177 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
1179 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
1180 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
1181 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
1182 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
1184 * bug fix: interrupts arriving during CL:OPEN caused an error.
1185 * bug fix: overeager character buffering could cause input to block
1186 spuriously when reading from a pipe (lp#643686)
1187 * bug fix: more efficient timer expiry should avoid starvation on systems
1188 where number of SIGALRMs per second is restricted. (lp#375515)
1189 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
1190 * bug fix: compile-times no longer scale linearly with the size of
1191 quoted lists in source-code. (lp#654289)
1192 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
1193 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
1194 so badly. (lp#654485)
1195 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
1196 an error for eg. STRUCTURE. (lp#458015)
1197 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
1198 (lp#613871, thanks to Roman Marynchak)
1199 * bug fix: more reliable &REST list type derivation. (lp#655203)
1200 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
1201 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
1202 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
1203 also declared NOTINLINE. (lp#655581)
1204 * bug fix: the compiler could attempt to emit constant left shifts of
1205 greater value than n-word-bits. (lp#309063)
1206 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
1207 type information for the function being set. (lp#659220)
1208 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
1209 containing self-calls were recompiled with a new signature, and failed
1210 to warn when a self-call using the old signature was left in. (lp#655126)
1211 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
1212 :DEFAULT when the default external had character size other than 8 bits.
1214 * bug fix: derived types of functions in the same file were implicitly
1215 trusted, leading to potential heap corruption when those function were
1216 defined incompatibly. (lp#657499)
1217 * bug fix: existing ASDF source registries are ignored when building
1218 contribs (lp#659105)
1219 * bug fix: short-form DEFSETF checks that the second argument is a symbol
1220 (lp#655824, thanks to Roman Marynchak)
1221 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
1222 package-lock violation was detected. (lp#660752)
1223 * bug fix: the system can store different docstrings for a single function
1224 under different names. (lp#661631, regression from 1.0.29.24)
1225 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
1226 properly. (lp#384801)
1227 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
1228 of specified length could confuse the type derivation in unsafe code.
1230 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1231 fork with multiple Lisp threads running is made on every platform,
1232 not just Darwin. (lp#451111)
1233 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1234 around when core was saved, which could cause undefined behaviour when the
1236 * bug fix: Allow UNTRACE of functions that are no longer defined
1237 (lp#667657, thanks to Attila Lendvai)
1238 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1239 compile-time warning (lp#664373, thanks to Stas Boukarev)
1241 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1242 * incompatible change: FD-STREAMS no longer participate in the serve-event
1243 event-loop by default. (lp#316072)
1244 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1245 affects streams from CL:OPEN.
1246 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1247 default, but this is liable to change: applications needing serve-event
1248 for socket streams should explicitly request it using :SERVE-EVENTS T
1250 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1252 * enhancement: CLOS effective method functions and defclass slot typechecking
1253 function now have debug names for use in backtraces and profiles.
1254 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1256 * enhancement: symbols are printed using fully qualified names in several
1257 error and warning messages which are often associated with package
1258 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1259 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1260 thanks to Andrew Golding)
1261 * bug fix: reading /proc files on Linux works. (lp#425199)
1262 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1264 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1265 breaking code that tried to write the value of a printer control variable.
1266 (lp#581564, thanks to Stas Boukarev)
1267 * bug fix: WRITE compiler macro did not handle output stream designators
1268 correctly. (lp#598374, thanks to Stas Boukarev)
1269 * bug fix: better availability of names of foreign functions in backtraces
1270 on Linux. (lp#626962, thanks to Stas Boukarev)
1271 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1272 lp#627581, thanks to Josh Elsasser and Jim Wise)
1273 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1274 thanks to Josh Elsasser)
1275 * bug fix: using aliases for builtin classes as defmethod specializers
1276 without adding DEFTYPEs for them works. (lp#618387)
1277 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1279 * bug fix: legally dynamic-extent lists and vectors used as
1280 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1281 * bug fix: inline-expansion creating references to dead lambda-variables
1282 (lp#454681, thanks to Alexey Dejneka)
1283 * bug fix: better error message for bogus numerical arguments to RANDOM.
1284 (lp#598986, thanks to Stas Boukarev)
1285 * bug fix: the compiler occasionally inlined references from incompatible
1286 environments occurs. (lp#308951)
1287 * bug fix: the compiler threw an error when trying to compile a local
1288 function (labels or flet) known to take a specialized complex argument.
1289 (not in launchpad, reported by sykopomp in #lispgames)
1290 * bug fix: package-locks failed to protect against compile-time effects of
1291 DEFUN when the symbol previously had a macro definition. (lp#576637)
1292 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1293 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1294 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1295 * bug fix: evaluation in debugger REPL works using the global context when
1296 in frames that do not have sufficient debug information.
1297 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1299 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1301 * bug fix: interrupt taking longer than the requested period caused SLEEP
1302 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1304 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1306 ** Cross-compilation host is now specified to make.sh using
1307 command-line argument --xc-host=<command> instead of a positional
1308 argument. (thanks to Daniel Herring)
1309 ** Install location can be specified to make.sh using command-line
1310 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1311 * optimization: The default implementation of
1312 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1313 * enhancement: Explicit memory barrier operations are now available for use
1314 by multithreaded code. See documentation for details.
1315 * enhancement: Experimental support for threading on Linux/PPC.
1316 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1317 * bug fix: EXPT signals an error if first argument is a zero and second
1318 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1319 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1320 (lp#576594, thanks to Roman Marynchak)
1321 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1322 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1324 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1325 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1326 cached, leading to many fewer expensive calls to
1327 COMPUTE-APPLICABLE-METHODS.
1328 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1329 CLASS argument, search for and call an appropriate optimized ctor function
1331 * bug fix: WRITE always returns the correct value.
1333 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1334 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1335 * bug fix: Name conflicts between symbols passed as arguments to a single
1336 call to IMPORT no longer add multiple symbols with the same name to the
1337 package (detectable via DO-SYMBOLS).
1338 * bug fix: support building without the dlshim on darwin x86 and x86-64
1340 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1342 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1343 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1345 * bug fix: linkage-table entries on PPC now no longer overflow their
1346 space allocation (potentially causing crashes if they are written out
1348 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1349 platforms, preventing the GC from seeing stale pointers on the control
1350 stack in subsequent GCs (which would, and does, break invariants).
1351 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1352 * bug fix: Literal characters with code points greater than about 32767
1353 now work on PPC UNICODE builds.
1354 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1355 high order bits are explicitly cleared out. In some contrived situations,
1356 this could lead to wrong results in mixed real/complex float arithmetic.
1357 * bug fix: Fix function/macro redefinition warnings when building with
1358 clisp. (lp#576787, thanks to Josh Elsasser)
1359 * new platform: experimental support for ppc/openbsd (thanks to Josh
1361 * bug fix: Floating-point traps now work on ppc/linux.
1363 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1364 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1365 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1366 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1367 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1368 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1369 SB-THREAD:GRAB-MUTEX.
1370 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1371 contain additional data structures and tools for concurrent programming;
1372 at the moment it contains a lock-free queue, and a lock-free mailbox
1374 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1375 GET-MUTEX but takes &key rather than &optional parameters. Also added
1376 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1378 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1379 SB-THREAD:WAIT-ON-SEMAPHORE.
1380 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1382 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1383 conditions to defer the deadline for forever.
1384 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1386 * enhancement: errors from NO-APPLICABLE-METHOD and
1387 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1388 generic function call.
1389 * enhancement: SB-BSD-SOCKET improvements
1390 ** sockets and socket streams now have a more informative printed
1391 representation based on the corresponding SOCKET-NAME and
1393 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1395 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1396 CL:CLOSE when appropriate, and no longer disassociates the stream
1397 from the socket if close failed. (lp#543951)
1398 * improvements to the instrumenting profiler
1399 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1400 ** optimization: counters no longer use locks for the overflow mode.
1401 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1402 incurred an off-by-one miscount.
1403 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1404 * enhancement: improved DEFMETHOD pretty-printing.
1405 * enhancement: perform range reduction when arguments are too large for
1406 x87's transcendentals (instead of returning 0). (lp#327192)
1407 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1408 some of CL-PPCRE's macros. (lp#570079)
1409 * enhancement: our machine code is slightly less hostile to valgrind on
1411 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1412 to Robert Swindells and Aleksej Saushev)
1413 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1414 * bug fix: a rare case of startup-time page table corruption.
1415 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1416 to timeouts could be left in an inconsistent state.
1417 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1418 * bug fix: misoptimization of multiplication by one in
1419 (SB-C::FLOAT-ACCURACY 0) policies.
1420 * bug fix: miscounts in SB-PROFILE.
1421 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1422 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1423 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1424 up itself" (March 2010) for further details.
1425 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1426 against length of the list if the element is found before the specified
1427 END is reached. (thanks to Alec Berryman, lp#554385)
1428 * bug fix: errors signalled during package graph modification no longer
1429 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1430 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1431 :SB-DOC feature. (lp#552564)
1432 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1433 * bug fix: more robust runtime executable path detection. (lp#375549)
1434 * bug fix: GCD always returns positive values. (lp#413680)
1435 * bug fix: Converting division to multiplication by reciprocal handles
1437 * bug fix: We were too eager in eliding range reduction tests on x87.
1438 The maximal magnitude is 2^63, not 2^64.
1439 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1441 * bug fix: Maybe restore buildability on Alpha.
1442 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1444 * bug fix: RANDOM-STATE can be printed readably again.
1445 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1446 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1447 types) could result in type mismatches during compilation.
1449 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1450 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1451 stack frame thrown from.
1452 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1453 compiler optimization qualities inside dynamic extent of its body.
1454 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1455 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1457 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1458 constraint propgation, allowing better compilation eg. when used to
1459 access structures with WITH-SLOTS. (lp#520366)
1460 * optimization: the compiler is now more aware of the type of the underlying
1461 storage vector for multidimensional simple arrays resulting in better code
1462 for accessing such arrays.
1463 * optimization: passing NIL as the environment argument to TYPEP no longer
1464 inhibits optimizing it. (lp#309788)
1465 * optimization: more efficient register usage when handling single-float
1466 arguments on x86-64. (thanks to Lutz Euler)
1467 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1468 pre-allocated temporary vectors. (lp#496249)
1469 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1470 in :INITIAL-CONTENTS. (lp#523612)
1471 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1472 functions. (lp#524707)
1473 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1474 WITH-SLOTS usages during compilation.
1475 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1476 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1477 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1478 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1479 instruction (tested on x86oid linux with ud2-breakpoints).
1480 * bug fix: slam.sh now works on win32.
1481 * bug fix: better differences of numeric types. (lp#309124)
1482 * bug fix: arrays declared intersection and union types can have their
1483 upgraded element type derived. (lp#316078)
1484 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
1485 threads started during profiling. (lp#472499)
1486 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
1488 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
1489 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
1490 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
1491 values instead of signaling an error. (lp#309093)
1492 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
1494 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
1495 declarations (lp#497321)
1496 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1497 and failed to detect circular lists (lp#452008)
1498 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1500 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1501 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1502 due to it, so that handlers can run.
1503 * bug fix: reparsing undefined types if they have become defined since
1504 parsing. (lp#309128)
1505 * bug fix: missing &REST type in a proclamation for a function with both
1506 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1507 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1508 expanded calls (lp#542174)
1509 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1510 than just at toplevel form.
1512 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1513 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1514 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1515 but work on type specifiers.
1516 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1517 to name a type specifier.
1518 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1519 specifier is valid where "valid" basically means "would be accepted as
1520 second argument of TYPEP".
1521 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1522 returns the function's declared, or derived FTYPE.
1523 * new feature: SB-POSIX now supports accessing the d_ino member of
1524 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1525 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1526 provide for seeding a RANDOM-STATE object with user-provided data or
1527 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1528 attempt to initialize the returned state from the operating system's
1529 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1530 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1531 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1532 * bug fix: Fix grammar and style issues for the docstrings of
1533 printer-related variables and functions. (Thanks to mon_key; launchpad
1535 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1537 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1538 in a row even though a handler defered the deadline long into the
1540 * bug fix: A deadline handler was run without interrupts enabled for a
1541 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1542 in infinitely spinning, non-killable threads.
1543 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1544 before reaching the erring stack frame.
1545 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1546 real power. (launchpad bug lp#525949)
1547 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1548 GENCGC platforms. (launchpad bug lp#529014)
1549 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1550 (launchpad bug lp#525916)
1551 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1552 (Thanks to Robert Goldman)
1554 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1555 * optimization: ROUND with a single single-float or double-float argument
1556 is properly inlined when possible.
1557 * optimization: Slightly better code is generated for integer<->float
1558 conversions and for single-float<->double-float conversions on x86-64.
1559 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1560 code for 32-bit and 64-bit rotations on x86-64.
1561 * bug fix: The install script changes the ownership of directories as well
1562 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1563 launchpad bug lp#508485)
1564 * bug fix: TRUNCATE with a single single-float or double-float argument is
1565 properly inlined when possible. (launchpad bug lp#489388)
1566 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1567 no longer causes a compiler error on x86 and ppc.
1568 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1569 always relative to *READTABLE* rather than the passed argument.
1571 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1572 * minor incompatible change: threading support is now enabled by default
1574 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1576 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1577 are now caught and reported just like errors during macroexpansion.
1578 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1579 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1580 * enhancement: ASDF systems can now depends on SB-QUEUE.
1581 * fixes and improvements related to Unicode and external formats:
1582 ** bug fix: error handling and restart usage in the ucs-2 external format
1584 ** there is now an implementation of the ucs-4 external format.
1585 ** the utf-16 and utf-32 external formats are supported.
1586 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1587 in the environment. setenv() and unsetenv() are also provided. (reported by
1588 Fare Rideau; launchpad bug lp#460455)
1589 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1590 loading. This ensures sensible errors for .FASL files from other
1591 implementations on case-insensitive filesystems. (reported by Willem
1592 Broekema; launchpad bug lp#489417)
1593 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1594 Willem Broekema; launchpad bug lp#489698).
1595 * bug fix: some minor code rearrangements to reenable warning-free building
1596 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1597 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1599 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1602 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1603 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1604 * improvement: support O_LARGEFILE access to files larger than 2GB on
1605 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1606 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1607 definitions for methods specializing on the passed class itself.
1608 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1609 definitions for methods specializing on the passed class itself, or on
1611 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1612 about itself during the build (e.g. for M-? in Slime), if this flag is
1613 enabled in customize-target-features.lisp. This will increase the core
1614 size by about 5-6mb, though, so it's mostly interesting to SBCL
1616 * new feature: various GENCGC tuning parameters have been experimentally
1617 documented and exported from SB-EXT. See documentation for details.
1618 * fixes and improvements related to Unicode and external formats:
1619 ** the Unicode character database has been upgraded to the
1620 Unicode 5.2 standard, giving names and properties to a number of new
1621 characters, and providing a few extra characters with case
1623 ** improvement: restarts for providing replacement input/output on coding
1624 errors for fd-stream external formats.
1625 ** improvement: where :<encoding> is a keyword corresponding to an
1626 external format the system supports, it is now possible to specify
1627 (:<encoding> :replacement <character>) as an external format which will
1628 automatically substitute <character> on encoding or decoding errors for
1629 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1631 ** improvement: the file streams underlying the standard streams (such as
1632 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1633 which uses the replacement mechanism to handle encoding errors,
1634 preventing various infinite error chains and unrecoverable I/O
1636 ** minor incompatible change: the utf-8 external format now correctly
1637 refuses to encode Lisp characters in the surrogate range (char-codes
1638 between #xd800 and #xdfff).
1639 ** fix a typo preventing conversion of strings into octet vectors
1640 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1642 ** fix a bug in the octet multibyte handling of decoding errors and the
1643 USE-VALUE restart. (launchpad bug lp#314939)
1644 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1645 restart on fd-stream decoding errors.
1646 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1647 error is near the end of file.
1648 ** fix a double-error case in unibyte octet conversions, when the first
1649 use of USE-VALUE is ignored.
1650 ** fix bugs in handling of undefined code points in unibyte encodings.
1651 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1652 streams after an UNREAD-CHAR.
1653 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1654 object is allocated in a boxed region of dynamic space.
1655 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1656 fork with multiple Lisp threads running is made, instead of going
1657 ahead with unpredictable consequences. (reported by Leslie Polzer)
1658 * bug fix: uses of slot accessors on specialized method parameters within
1659 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1660 error while finalizing the class. This fix may cause classes with slot
1661 accessors to be finalized later than previously. (reported by Lars Rune
1662 Nøstdal; launchpad bug lp#473699)
1663 * bug fix: restore buildability on the MIPS platform. (regression from
1664 1.0.30.38, reported by Samium Gromoff)
1665 * bug fix: inspecting closures is less likely to fail with a type error.
1666 * bug fix: no timer starvation when setting the system clock back.
1667 (launchpad bug lp#460283)
1668 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1669 standard pprint dispatch table as specified by CLHS.
1670 * bug fix: give CLISP a hint about a type declaration to enable it to build
1671 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1673 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1674 (reported by Attila Lendvai; launchpad bug lp#310132)
1675 * bug fix: distinguish in type specifiers between arrays that might be
1676 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1677 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1678 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1679 * bug fix: setting the value of a symbol-macro within a method in the
1680 presence of type declarations works properly again. (reported by Iban
1681 Hatchondo; launchpad bug lp#485019)
1683 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1684 * optimization: faster FIND and POSITION on strings of unknown element type
1685 in high SPEED policies. (thanks to Karol Swietlicki)
1686 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1688 * improvement: better error signalling for bogus parameter specializer names
1689 in DEFMETHOD forms (reported by Pluijzer)
1690 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1692 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1694 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1695 removes previous default initargs (reported by Lars Rune Nøstdal and
1697 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1698 lambda-lists. (reported by Peter Seibel)
1699 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1700 correctly when starting from an executable core without saved runtime
1701 options (reported by Faré Rideau, thanks to Zach Beane)
1702 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1703 an optimization note instead. (reported by Martin Cracauer)
1704 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1705 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1706 new process group if it doesn't need to share stdin with the sbcl
1707 process. (thanks to Leslie Polzer)
1708 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1709 (reported by Stanislaw Halik)
1711 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1712 * improvement: stack allocation is should now be possible in all nested
1713 inlining cases: failure to stack allocate when equivalent code is manually
1714 open coded is now considered a bug.
1715 * improvements related to Unicode:
1716 ** the Unicode character database has been upgraded to the
1717 Unicode 5.1 standard, giving names and properties to a number of new
1718 characters, and providing a few extra characters with case
1720 ** the system now recognizes and produces names for Unicode Hangul
1721 syllable characters.
1722 ** the EBCDIC-US external-format is now supported for octet operations
1723 (as well as for stream operations).
1724 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1725 be used to output toplevel compile-time effects into a separate .CFASL
1727 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1728 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1730 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1732 * optimization: division of floating point numbers by constants uses
1733 multiplication by reciprocal when an exact reciprocal exists.
1734 * optimization: multiplication of single- and double-floats floats by
1735 constant two has been optimized.
1736 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1737 sufficient type information is available. (thanks to Leslie Polzer)
1738 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1739 known structure objects are as efficient as defstruct generated accessors.
1740 * optimization: unused vector creation can now be optimized away.
1741 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1742 * improvement: a STYLE-WARNING is signalled when a generic function
1743 clobbers an earlier FTYPE proclamation.
1744 * improvement: the compiler is able to track the effective type of
1745 generic function across method addition and removal even in the
1746 absence of an explicit DEFGENERIC.
1747 * improvement: DESCRIBE now reports on symbols naming undefined
1748 but assumed or declared function as well.
1749 * improvement: recompilation of systems using SB-GROVEL now works
1750 (thanks to Leslie Polzer)
1751 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1752 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1754 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1755 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1756 well as user defined declaration names.
1757 ** VARIABLE-INFORMATION is now aware of alien variables.
1758 * improvement: improved address space layout on OpenBSD (thanks to Josh
1760 * improvement: pretty-printing of various Lisp forms has been improved
1761 (thanks to Tobias Rittweiler)
1762 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1763 unused were deleted in safe code. (reported by John Fremlin)
1764 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1766 * bug fix: some out-of-line array predicates were missing (reported by
1768 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1770 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1771 (thanks to Larry D'Anna)
1772 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1773 as well. (reported by Josh Elsasser)
1774 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1775 leading to possible attempts to delete the same file twice. See docstring
1776 on DELETE-FILE for details. (reported by John Fremlin)
1777 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1778 designator argument, rather than its truename. (reported by Luis
1780 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1781 information about some array types. (thanks to Luis Oliveira)
1782 * bug fix: moderately complex combinations of inline expansions could
1783 be miscompiled if the result was declared to be dynamic extent.
1784 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1785 form (+ <variable> <integer>) were miscompiled under certain
1787 * bug fix: in some cases no compiler note about failure to stack allocate
1788 was emitted, even if the objects were in fact heap allocated.
1789 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1790 allocation could cause objects users might reasonably expect to
1791 be heap allocated to be stack allocated.
1792 * bug fix: DESCRIBE signalled an error for generic functions under
1793 certain circumstances. (thanks to Leslie Polzer)
1794 * bug fix: Fixed spelling of an error message.
1796 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1797 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1798 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1799 of SB-THREAD:THREAD-ERROR-THREAD.
1800 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1801 * new feature: docstrings for local and anonymous functions are no longer
1802 discarded. (thanks to Leslie Polzer)
1803 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1804 values in other threads.
1805 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1806 about object allocation.
1807 * optimization: division of a real float by a complex float is implemented
1808 with a specialised code sequence.
1809 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1810 keywords is an order of magnitude faster.
1811 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1812 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1813 methods, and similarly for non-standard metaclass classes as long as there
1814 are no methods additional on MAKE-INSTANCE.
1815 * optimization: more efficient type-checks for FIXNUMs when the value
1816 is known to be a signed word on x86 and x86-64.
1817 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1818 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1820 * optimization: compiler is smarter about delegating argument type checks to
1822 * optimization: several character functions are now compiled somewhat more
1823 efficiently. (reported by Lynn Quam)
1824 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1825 * improvement: less unsafe constant folding in floating point arithmetic,
1826 especially for mixed complex/real -float operations.
1827 * optimization: constant double and single floats are stored in native
1828 unboxed format on x86[-64].
1829 * optimization: smarter code for arithmetic operations with constant floats,
1830 complex floats, or integers on x86[-64].
1831 * optimization: smarter code for conjugate/multiplication of float complexes
1832 and abs/negate of floats on x86-64.
1833 * optimization: more efficient complex float and real float operations on
1835 * improvement: complex float division is slightly more stable.
1836 * improvement: DESCRIBE output has been reworked to be easier to read and
1837 contains more pertinent information.
1838 * improvement: failure to provide requested stack allocation compiler notes
1839 provided in all cases (requested stack allocation not happening without a
1840 note being issued is now considered a bug.)
1841 * bug fix: SB-POSIX exports the documented types and functions
1842 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1843 types. (reported by "abhi")
1844 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1845 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1846 (thanks to Paul Khuong)
1847 * bug fix: looping around HANDLER-CASE could silently consume stack space
1848 on each iteration. (reported by "foobar")
1849 * bug fix: better error signalling when calls to functions seeking elements
1850 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1851 (reported by Tobias Rittweiler)
1852 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1853 directory components now works as it used to. (various prolems reported by
1854 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1855 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1856 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1857 * bug fix: bogus undefined variable warnings from fopcompiled references to
1858 global variables. (thanks to Lars Rune Nøstdal)
1859 * bug fix: foreign function names should now appear in backtraces on
1860 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1861 * bug fix: SETF compiler macro documentation strings are not discarded
1863 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1864 (thanks to Alex Plotnick)
1865 * bug fix: SLEEP accepts large integer arguments, truncating them to
1866 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1867 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1868 * bug fix: compiler notes for expensive slot type checks could be emitted
1869 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1871 changes in sbcl-1.0.29 relative to 1.0.28:
1872 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1873 https://bugs.launchpad.net/sbcl
1874 Bugs can be reported directly there, or by sending email to
1875 sbcl-bugs@lists.sourceforge.net
1876 (no subscription required.)
1877 * minor incompatible change: under weak type checking policy integer
1878 types are weakened less aggressively.
1879 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1880 allowed to return, which causes SBCL to quit with exit status 0. Previously
1881 if the function returned with a small integer return value, that value
1882 was accidentally reused as the exit status.
1883 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1884 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1885 :HASH-FUNCTION argument. Refer to user manual for details.
1886 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1888 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1889 microseconds since the Unix epoch on all platforms.
1890 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1891 allows the compiler to safely elide boundedness checks for special
1893 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1894 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1895 efficiency measure for threaded platforms, but also valueable in
1897 * new feature: UNC pathnames are now understood by the system on Windows.
1898 * optimization: the compiler uses a specialized version of FILL when the
1899 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1901 * optimization: accesses to potentially non-simple arrays where element type
1902 is known are 50% faster.
1903 * optimization: compiler now generates faster array typechecking code.
1904 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1906 * optimization: multidimensional array accesses in the absence of type
1907 information regarding array rank are approximately 10% faster due to
1908 open coding of ARRAY-RANK.
1909 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1910 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1912 * optimization: result of call to VECTOR can now be stack allocated.
1913 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1914 as long as the resulting array is one-dimensional and has a known
1915 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1916 length of the list matches the known length of the vector does not
1917 allocate the list as an intermediate step. Ditto for VECTOR and simple
1919 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1920 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1921 known element type, and is known to be simple and one dimensional.
1922 * improvement: SBCL now emits a compiler note where stack allocation was
1923 requested but could not be provided (not in all cases, unfortunately)
1924 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1925 * improvement: pretty-printing loop has been implemented properly. (thanks
1926 to Tobias Rittweiler)
1927 * documentation: CLOS slot typechecing policy has been documented.
1928 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1929 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1930 pointer, leading to memory faults. (thanks to Bart Botta)
1931 * bug fix: better floating point exception handling on x86/OpenBSD.
1932 (thanks to Josh Elsasser)
1933 * bug fix: exit status from QUIT when called under --script was lost
1934 (reported by Hubert Kauker)
1935 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1936 same implementation of FILL to initialize the array, even if a more
1937 efficient one was available (reported by Stas Boukarev, thanks to
1939 * bug fix: potential miscompilation of array stack allocation on x86 and
1940 x86-64. (reported by Time Tossavainen)
1941 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1942 result in their subforms being treated as top level forms. (reported by
1944 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1945 than a machine register could leave garbage in the high bits of the
1946 result register (bug 316325).
1947 * bug fix: disable address space randomization Linux/x86-64 as well,
1948 not just x86-64. (reported by Ken Olum)
1949 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1950 generate incorrect code.
1951 * bug fix: #201; type inference for CONS and ARRAY types could derive
1952 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1953 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1954 could not be assigned to or bound with PROGV. (reported by Lorenz
1956 * bug fix: the value of CL:- in the inspector was the previous expression
1957 evaluated rather than the expression being evaluated.
1958 * bug fix: constants can no longer be locally declared special.
1959 * bug fix: signals delivered to threads started from foreign land (read:
1960 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1961 thread by blocking all signals and resignalling.
1962 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1963 from :INITFORM, if any.
1965 changes in sbcl-1.0.28 relative to 1.0.27:
1966 * a number of bugs in cross-compilation have been fixed, with the ultimate
1967 result that building under (at least) clisp should be much more reliable.
1968 * minor incompatible changes: echo-streams now propagate unread-char to the
1969 underlying input stream, and no longer permit unreading more than one
1971 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1972 frames, allowing for instance more reliable backtraces.
1973 * improvement: the debugger REPL can now reference lexical variables
1974 by name directly for code compiled with (DEBUG 3).
1975 * improvement: errors from malformed declarations now have better source
1976 paths associated with them. (thanks to Tobias Rittweiler)
1977 * optimization: faster local calls on x86/x86-64
1978 * bug fix: some error messages for out-of-bound array indexes confused the
1979 index and the bound. (thanks to Stas Boukarev)
1980 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1982 * bug fix: running regressions tests in shells without OSTYPE set now works.
1983 (reported by Harald Hanche-Olsen)
1984 * bug fix: more robust static space exhaustion signalling from
1985 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1986 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1987 docstring away instead of storing it under names such as (LAMBDA (X)).
1988 (reported by Leslie Polzer)
1989 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1990 (thanks to Ole Arndt for the patch)
1991 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1992 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1993 potentially-invalid effective methods in its cache.
1994 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1995 instances as well (thanks to Paul Khuong)
1996 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1997 SB-POSIX:WAITPID and their C equivalents.
1998 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
2000 changes in sbcl-1.0.27 relative to 1.0.26:
2001 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
2002 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
2003 * improvement: the system either recovers from stack exhaustion or dies
2004 properly as opposed to leaving the user uncertain of whether the handler
2005 trampled on some random memory next to the stack or having to rely on
2006 --lose-on-corruption (which is still a good idea to use in production
2007 because stack exhaustion can happen in signal handlers which will likely
2009 * bug fix: fix gc related interrupt handling bug on ppc (regression from
2010 1.0.25.37, reported by Harald Hanche-Olsen)
2011 * bug fix: work around signal delivery bug in darwin (regression from
2012 1.0.25.44, reported by Sidney Markowitz)
2013 * bug fix: fix ERROR leaking memory (reported by David Thompson)
2015 changes in sbcl-1.0.26 relative to 1.0.25:
2016 * incompatible change: an interruption (be it a function passed to
2017 INTERRUPT-THREAD or a timer function) runs in an environment where
2018 interrupts can be enabled. The interruption can use
2019 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
2020 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
2021 potentially running out of stack. Keep in mind that in the absence
2022 of WITHOUT-INTERRUPTS some potentially blocking operation such as
2023 acquiring a lock can enable interrupts.
2024 * incompatible change: GC-OFF and GC-ON are removed, as they were
2025 always unsafe. Use WITHOUT-GCING instead.
2026 * new feature: runtime option --disable-ldb
2027 * new feature: runtime option --lose-on-corruption to die at the
2028 slightest hint of possibly non-recoverable errors: running out of
2029 memory, stack, alien stack, binding stack, encountering a memory
2030 fault, etc. In the absence of --lose-on-corruption a warning is
2032 * enhancement: detect binding stack exhaustion
2033 * enhancement: detect alien stack exhaustion on x86/x86-64
2034 * improvement: generally more stable and reliable interrupt handling
2035 * improvement: there is a per thread interruption queue,
2036 interruptions are executed in order of arrival
2037 * improvement: a repeating timer reschedules itself when the it has
2038 finished, but expiration times are spaced equally. If an
2039 expiration time is in the past it will trigger after a short grace
2040 period that may give a chance to other things to run.
2041 * optimization: slightly faster gc on multithreaded builds
2042 * optimization: faster WITHOUT-GCING
2043 * bug fix: when JOIN-THREAD signals an error, do it when not holding
2044 important locks so that the debugger/handler doesn't produce
2045 recursive errors or deadlock.
2046 * bug fix: real-time signals are not used anymore, so no more
2047 hanging when the system wide real-time signal queue gets full.
2048 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
2050 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
2051 * bug fix: fix random memory faults related to interrupts on alpha
2052 * bug fix: fix random memory faults related to interrupts on sparc
2053 * bug fix: fix deadlocks related to starting threads
2054 * bug fix: fix deadlines on locks on futex platforms
2055 * bug fix: restore errno in signal handlers
2056 * bug fix: fix deadlocks related to hash tables
2057 * bug fix: fix deadlocks in pcl
2059 changes in sbcl-1.0.25 relative to 1.0.24:
2060 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
2061 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
2062 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
2063 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
2064 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
2065 better name and does not return values so stale on multiprocessor systems.
2066 Also, HOLDING-MUTEX-P was added for about the only sane usage of
2068 * improvement: unithread builds keep track of MUTEX-VALUE.
2069 * improvement: reading from a TWO-WAY-STREAM does not touch the output
2070 stream anymore making it thread safe to have a concurrent reader and
2071 a writer, for instance, in a pipe.
2072 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
2073 arguments, making compiler-macros for SETF-functions able to inspect
2074 their constant arguments.
2075 * improvement: COMPILE-FILE reports times with millisecond accuracy
2076 (thanks to Luis Oliveira)
2077 * optimization: CHAR-CODE type derivation has been improved, making
2078 TYPEP elimination on subtypes of CHARACTER work better. (reported
2079 by Tobias Rittweiler, patch by Paul Khuong)
2080 * bug fix: setting alien structure fields of type struct by value now
2081 computes the right offset for the memory copy.
2082 * bug fix: compilation problem involving inlined calls to aliens with
2083 result type VOID. (reported by Ken Olum)
2084 * bug fix: #235a; sequential inline expasion in different policies no
2085 longer reuses the functional from the previous expansion site.
2086 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
2087 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
2088 * bug fix: named ENUMs in multiply-referenced alien record types no longer
2089 cause an implied type redefinition. Regression from 1.0.21.29.
2090 * bug fix: sign-extension of small signed return values now works with C
2091 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
2092 * improvements to the Windows port:
2093 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
2094 Westfold, thanks to Rudi Schlatte)
2096 changes in sbcl-1.0.24 relative to 1.0.23:
2097 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
2098 vector of a multidimensional SIMPLE-ARRAY.
2099 * new feature: the system now signals a continuable error if standard
2100 readtable modification is attempted. (thanks to Tobias Rittweiler)
2101 * new feature: DIRECTORY has been extended with a non-standard keyword
2102 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
2103 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
2104 has been robustified and documented better. (thanks to Robert Goldman)
2105 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
2106 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
2107 * tradeoff: constant FORMAT control strings are now compiled unless
2108 SPACE > SPEED (previously only when SPEED > SPACE.)
2109 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
2111 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
2113 * bug fix: lexical type declarations are now correctly reported by
2114 SB-CLTL2. (reported by Larry D'Anna)
2115 * bug fix: STRING-TO-OCTETS did not handle :START properly when
2116 using UTF-8 as external format. (thanks to Luis Oliveira)
2117 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
2118 are signalled correctly. (thanks to Stas Boukarev)
2119 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
2120 designator. (thanks to Tobias Rittweiler)
2121 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
2122 designator, and returns T instead of the function. (thanks to
2124 * bug fix: direct superclasses of STANDARD-CLASS and
2125 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
2126 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
2127 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
2128 when no class with the named slot yet exists no longer causes a
2129 compile-time style-warning.
2130 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
2131 in safe code. (reported by Didier Verna)
2132 * bug fix: #430; nested structure constructors can stack allocate.
2133 * bug fix: on some 64-bit platforms dynamic space size was truncated
2134 to #xffff0000 bytes. (reported by Benjamin Lambert)
2135 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
2136 REPL unusable. (reported by Daniel Herring)
2137 * bug fix: return values of READ-SEQUENCE did not take :START into
2138 account on file streams, regressions since 1.0.12.22. (reported by
2139 Thomas Russ, patch by Paul Khuong)
2140 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
2141 method specializer used to confuse permuation vector optimization.
2142 * bug fix: system inserted bogus implicit type declarations for local
2143 special variables in DEFMETHOD bodies.
2144 * bug fix: #354; duplicated frames in backtraces due to
2145 non-tail-call-optimized XEPs to functions with return type NIL
2147 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
2148 initializes structure object slots according to DEFSTRUCT initforms,
2149 and DEFSTRUCT forms :INCLUDEind structure classes defined using
2150 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
2151 (reported by Bruno Haible and Stephen Wilson)
2152 * bug fix: #395; fill-pointer output streams used now support
2153 element-type BASE-CHAR as well.
2154 * bug fix: compiler error when attempting to derive return value of
2155 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
2157 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
2159 * bug fix: Mac OS X binaries should now be portable between Leopard
2162 changes in sbcl-1.0.23 relative to 1.0.22:
2163 * enhancement: when disassembling method functions, disassembly
2164 for the associated fast function is also produced.
2165 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
2167 * optimization: printing with *PRINT-PRETTY* true is now more
2168 efficient as long as the object being printed doesn't require
2169 special handling by the pretty printer.
2170 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
2171 now interact correctly with type declarations.
2172 * partial bug fix: PCL detects infinite recursion during wrapper
2173 validation. (thanks to Attila Lendvai)
2174 * bug fix: #426; nested function calls are inlined properly.
2175 Previously if FOO was an inline function, in calls of the form
2176 (FOO (FOO ...)) the outer call was not inlined.
2177 * bug fix: long long arguments passed in registers to alien
2178 functions on PowerPC Linux and NetBSD are now handled correctly
2179 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
2181 changes in sbcl-1.0.22 relative to 1.0.21:
2182 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
2183 for the shared object in the current directory, but passes the native
2184 namestring of the designated pathname to the operation system's shared
2185 object loading function as-it.
2186 * minor incompatible change: --disable-debugger toplevel option now takes
2187 effect before processing of initialization files and --eval or --load
2189 * new feature: new commandline argument: --script, which supports
2190 shebang lines. See documentation for details. (based on work by
2192 * new feature: SAVE-LISP-AND-DIE can save current values of
2193 --dynamic-space-size and --control-stack-size in the executable core,
2194 causing it to skip normal runtime option processing. See documentation
2195 for details. (thanks to Zach Beane)
2196 * enhancement: inoccous calls to EVAL or generic functions dispatching
2197 on subclasses of eg. STREAM no longer cause compiler notes to appear.
2198 * enhancement: the system no longer resignals errors from --load and
2199 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
2200 associated with the original error to be lost. (thanks to Ariel
2202 * enhancement: :DONT-SAVE keyword argument has been added to
2203 LOAD-SHARED-OBJECT for controlling interaction with
2204 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
2205 the effects of an earlier LOAD-SHARED-OBJECT call.
2206 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
2207 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
2208 provided. (reported by Cedric St-Jean)
2209 * bug fix: circularity handling in the reader did not treat raw
2210 structure slots correctly. (reported by Cedric St-Jean)
2211 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
2212 file descriptors when there were none.
2213 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
2214 was broken. (reporteed by Willem Broekema)
2215 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
2216 pathnames without a directory.
2217 * bug fix: COMPILE-FILE did not warn about undefined variable
2218 references at toplevel, and LOAD of the resulting fasl did
2219 not signal an error.
2220 * bug fix: functions with non-required arguments used to end up with
2221 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
2222 * bug fix: redefining a function with non-required arguments didn't
2223 update the system's knowledge about its call signature properly.
2224 * bug fix: fixed #431; incompatible alien record type redefinitions
2225 are detected and handled. (reported by Neil Haven)
2226 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
2227 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
2229 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2230 after alien stack frames.
2231 * bug fix: strings passed to mk{s,d}temp lacked null termination
2233 changes in sbcl-1.0.21 relative to 1.0.20:
2234 * new feature: the compiler is able to track the effective type of a
2235 generic function across method addition and removal.
2236 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2237 appropriately typed structure slots without locking.
2238 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2239 information like those gathered by TIME using a programming-friendly
2241 * new feature: TIME reports time taken even if the form performs a
2242 non-local transfer of control.
2243 * enhancement: reduced conservativism on GENCGC platforms: on
2244 average 45% less pages pinned (measured from SBCL self build).
2245 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2246 mutate constant symbols or violate declaimed type of the symbol.
2247 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2248 sleeping on the semaphore in heavily contested semaphores.
2249 * bug fix: semaphores and condition variables were not interrupt
2251 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2252 owned by other threads anymore.
2253 * bug fix: FIND on lists called KEY outside the specified
2254 subsequence. (reported by budden)
2255 * bug fix: LOG doesn't use single-float intermediate results when
2256 given mixed integer and double-float arguments, leading to better
2257 precision. (reported by Bob Felts)
2258 * bug fix: LOG with base zero returned values of inconsistent type.
2260 changes in sbcl-1.0.20 relative to 1.0.19:
2261 * minor incompatible change: OPTIMIZE qualities
2262 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2263 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2264 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2265 * documentation: some slot access efficiency guidelines have been
2266 added to the user manual.
2267 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2268 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2269 as ASSOC and MEMEBER.
2270 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2271 to more efficient EQ-comparison versions more often.
2272 * optimization: enhanced derivation of DOLIST iteration variable type
2274 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2276 * optimization: runtime lookup of function definitions can be
2277 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2278 * optimization: compiler is able to derive the return type of
2279 (AREF (THE STRING X) Y) as being CHARACTER.
2280 * optimization: CLRHASH on empty hash-tables no longer does pointless
2281 work. (thanks to Alec Berryman)
2282 * optimization: REPLACE deftransforms don't punt when :START1 or
2284 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2285 no longer emits a code deletion note. (reported by Andrew
2287 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2288 functions with an odd number of &OPTIONAL arguments, a &REST
2289 argument, and one or more &KEY arguments at the call site.
2290 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2291 arguments appeared at call sites as well.
2292 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2293 READ-LINE &co can no longer read from them afterwards. (reported
2295 * bug fix: fixed #427: unused local aliens no longer cause compiler
2296 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2298 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2299 alien-stack leakage. (reported by Andy Hefner)
2300 * bug fix: PROGV signals an error when an attempt to violate declared
2301 type of a variable or bind a constant is made.
2302 * bug fix: SET signals an error when an attempt to violate declared
2303 type of a variable is made.
2304 * bug fix: restart computation during the execution of a restart
2305 test function no longer causes infinite recursion. (reported by
2307 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2308 signals an error. (thanks to Pierre Mai)
2309 * bug fix: EXPORT left symbol unexported in conflict situations.
2310 (thanks to Michael Weber)
2311 * bug fix: correctly handle name conflicts involving CL:NIL.
2312 (thanks to Michael Weber)
2313 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2314 conflicts arising from USEing package with conflicting symbols
2315 correctly. (thanks to Michael Weber)
2317 changes in sbcl-1.0.19 relative to 1.0.18:
2318 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2319 warnings that go otherwise unhandled will be muffled if they are
2320 of the type that's the value of this variable.
2321 * optimization: stack allocation is slightly more efficient on x86
2323 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2324 where a raw slot always is initialized using the initform whose
2325 type is not know sufficiently well a compile-time are now compiled
2326 correctly. (reported by John Morrison)
2327 * bug fix: compiler no longer makes erronous assumptions in the
2328 presence of non-foldable SATISFIES types.
2329 * bug fix: stack analysis missed cleanups of dynamic-extent
2330 arguments in non-let-converted calls to local functions.
2331 * improvements to the Windows port:
2332 ** adjusted address spaces for building on both Win32 and
2333 Win64. (thanks for John Connors)
2334 * fixed some bugs revealed by Paul Dietz' test suite:
2335 ** interval arithmetic during type derivation used inexact integer
2336 to single-float coercions.
2337 ** arithmetic operations involving large integers and single
2338 floats give the same results in compiled and interpreted code.
2339 ** deriving the result type of COERCE no longer signals an error
2340 if the derived type of the second argument is a MEMBER type
2341 containing invalid type specifiers.
2342 ** ADJOIN with constant NIL as second argument works correctly.
2343 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2345 changes in sbcl-1.0.18 relative to 1.0.17:
2346 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2347 profiles only the current thread.
2348 * minor incompatible change: changes to SYMBOL-VALUE of constants
2349 defined with DEFCONSTANT now signal an error.
2350 * enhancement: SB-SPROF now has support for wallclock profiling,
2351 and is also able to profile specific threads. REPORT output
2352 has also additional sorting options.
2353 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2355 * optimization: structure allocation has been improved
2356 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2357 ** out of line constructors are ~10% faster.
2358 ** inline constructors are ~15% faster.
2359 ** inline constructors are capable of dynamic extent allocation
2360 (generally on x86 and x86-64, in some cases on other platforms
2362 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2364 * optimization: file compiler is now able to coalesce non-circular
2365 lists, non-base strings, and bit-vectors. Additionally, constants
2366 are never referenced through SYMBOL-VALUE at runtime.
2367 * optimization: code defining methods on PRINT-OBJECT (and other
2368 generic functions in the COMMON-LISP package) now loads faster.
2369 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2371 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2372 fasl is now deleted. (reported by Attila Lendvai)
2373 * bug fix: READ-LINE always returned NIL for the last line in files.
2374 (reported by Yoshinori Tahara)
2375 * bug fix: more accurate disassembly annotations of foreign function
2376 calls. (thanks to Andy Hefner)
2377 * bug fix: trimming non-simple strings and non-string string
2378 designators when the there is nothing to trim works properly.
2379 (thanks to James Knight)
2380 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2381 (thanks to Travis Cross)
2382 * fixed some bugs revealed by Paul Dietz' test suite:
2383 ** NIL is a valid function name (regression at 1.0.13.38)
2384 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2385 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2386 fill pointers properly (regression at 1.0.12.23)
2387 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2388 displacement indices properly (regression at 1.0.12.23)
2390 changes in sbcl-1.0.17 relative to 1.0.16:
2391 * temporary regression: user code can no longer allocate closure
2392 variable storage on stack, due to bug 419 without explicitly
2393 requesting it. Please consult sbcl-devel for advice if you need to
2394 use this feature in the meanwhile.
2395 * new feature: runtime argument --control-stack-size can be used to
2396 adjust thread default control stack size.
2397 * enhancement: improved TIME output
2398 ** all times are reported using the measured accuracy (milliseconds
2399 for real and GC times, microseconds for everything else.)
2400 ** processor cycle counts on x86 and x86-64.
2401 ** interpreted forms are counted for both evaluator modes.
2402 ** number of lambdas converted by the compiler is reported.
2403 ** CPU percentage report (computed from real and total run time.)
2404 ** more comprehensive run time reporting, using a condenced format
2405 ** interperted form, lambda, and page fault counts are omitted
2407 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2409 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2410 * optimization: two argument forms of LAST are upto ~10% faster
2411 in normal SPEED policies.
2412 * optimization: NCONC no longer needs to heap cons its &REST list
2413 in normal SPEED policies.
2414 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2415 to Sidney Markowitz)
2416 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2417 regression since 1.0.9.1. (thanks to Eric Marsden)
2418 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2419 since 1.0.15.36. (thanks to Paul Khuong)
2420 * bug fix: LAST when always returned the whole list when given a bignum
2421 as the second argument.
2422 * bug fix: dynamic extent allocation of nested lists and vectors
2423 could leak to otherwise accessible parts.
2424 * bug fix: invalid optimization of heap-allocated alien variable
2426 * bug fix: fasl header checking is less vulnerable to different
2427 platform word lengths.
2428 * bug fix: more correct assembler syntax for GNU binutils
2429 2.18.50.0.4 support. (thanks to Marijn Schouten)
2430 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2432 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2433 declarations) successfully. (reported by Attila Lendvai)
2435 changes in sbcl-1.0.16 relative to 1.0.15:
2436 * minor incompatible change: revert the changes to sb-posix's error
2437 signaling added in 1.0.14.
2438 * minor incompatible change: change PROBE-FILE back to returning
2439 NIL whenever we can't get a truename, as was the case before 1.0.14.
2440 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2441 inherits from ERROR instead of just CONDITION.
2442 * new feature: SB-INTROSPECT can provide source locations for instances
2443 as well. (thanks to Tobias Rittweiler)
2444 * optimization: binding special variables now generates smaller code
2445 on threaded platforms.
2446 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2447 and cases where no :TEST is given but the compiler can infer that
2448 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2449 * optimization: better LOGNOT on fixnums.
2450 * optimization: modular arithmetic for a particular requested width
2451 is implemented using a tagged representation unless a better
2452 representation is available.
2453 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2454 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2455 for wellformedness and returns a specialized vector. (reported by
2456 Francois-Rene Rideau)
2457 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2458 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2459 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2460 unscheduling timer at the same time as another timer fires.
2461 * bug fix: don't reschedule timers for dead threads.
2462 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2463 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2464 bogus errors if select() was interrupted.
2465 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2467 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2468 * enhancement: cleaner backtraces for interactive interrupts, as
2469 well as other cases where the interesting frames used to be
2470 obscured by interrupt handling frames.
2471 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2472 now supported, and tracing a whole package using (TRACE "FOO") now
2473 traces SETF-functions as well.
2474 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2475 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2476 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2477 * unreadably printed representation of hash-tables now includes
2479 * bug fix: partially fixed #188: type propagation from assignments
2480 is now more efficient.
2481 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
2482 'DOUBLE-FLOAT) are not flushable.
2483 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
2484 full address of the object, and none of the tag bits.
2485 * bug fix: readably printing hash-tables now respects other printer
2486 control variables. (reported by Cedric St-Jean)
2487 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
2488 keyword with MAKE-HASH-TABLE.
2489 * bug fix: export SB-POSIX:MKSTEMP.
2490 * bug fix: SORT was not interrupt safe.
2491 * bug fix: XREF accounts for the last node of each basic-block as
2493 * bug fix: MAKE-INSTANCE optimizations interacted badly with
2494 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
2495 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2496 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2497 create obsolete instances in the case of redefinition or
2498 obsoletion of a superclass. (thanks to Andy Hefner)
2499 * bug fix: Support for the Alpha architecture has been revived; it had
2500 suffered somewhat from lack of maintenance since sbcl-1.0.
2501 * improvements to the Windows port:
2502 ** The system detects the codepage to use at startup, instead of
2503 using the value from the saved core. (thanks to Kei Suzuki)
2505 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2506 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2507 (see documentation for details.)
2508 * revived support for OpenBSD (contributed by Josh Elsasser)
2509 * partially fixed bug #108: ROOM no longer suffers from occasional
2510 (AVER (SAP= CURRENT END)) failures.
2511 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2512 bodies no longer cause a WARNING to be signalled. (reported by
2514 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2515 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2516 the bug in TRUNCATE.) (reported by Michael Weber)
2517 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2518 no samples. (reported by Andy Hefner)
2519 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2520 no longer appear as (NIL ...) frames in backtraces.
2521 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2522 is now actually exported from SB-EXT as documented. (reported by
2524 * bug fix: sb-aclrepl now correctly understands how to inspect
2525 single-floats on 64-bit platforms where single-floats are not boxed.
2526 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2527 yet been finalized. (reported by Levente Meszaros)
2528 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2529 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2530 SBCL-specific optimize qualities.
2532 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2533 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2534 an executable in the search path, and does so in the child
2535 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2536 been removed; it can be found in the CVS history, for somebody who
2537 needs that search behavior (see the manual).
2538 * minor incompatible change: compiler policy re. weakening type
2539 checks has changed: now type checks are weakened only if SAFETY < 2
2541 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2542 unparsing of directory pathnames as files. Analogously,
2543 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2544 filename to parse into a directory pathname.
2545 * enhancement: implicit generic function creation now signals a
2546 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2547 users can bind handlers for and muffle around calls to LOAD.
2548 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2549 to be used (using the default stream external format), and allows
2550 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2551 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2552 strings and vectors whose element-type or simplicity is not fully
2553 known at compile-time.
2554 * optimization: STRING-TRIM and related functions no longer allocate
2555 a new string when no trimming needs to be performed. These functions
2556 are also faster than before when the input string has been declared
2558 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2559 * optimization: READ-LINE is significantly faster for files containing
2561 * optimization: non-open coded uses of character comparison operators
2562 (e.g. char=) no longer cons when called with more than one parameter
2563 on platforms supporting dynamic-extent allocation.
2564 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2565 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2566 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2568 * bug fix: some sequence functions elided bounds checking when
2570 * bug fix: too liberal weakening of union-type checks when SPEED >
2572 * bug fix: more bogus fixnum declarations in ROOM implementation
2575 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2576 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2577 :SYNCHRONIZED argument, which makes the hash-table safe for
2578 concurrent accesses (but not iteration.) See also:
2579 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2580 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2581 * optimization: CONCATENATE on strings is an order of magnitude faster
2582 in code compiled with (> SPEED SPACE).
2583 * optimization: SUBSEQ is ~50% faster on lists.
2584 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2585 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2586 END is smaller then START.
2587 * bug fix: SB-PROFILE will no longer report extra consing for nested
2588 calls to profiled functions.
2589 * bug fix: ROOM implementation had bogus fixnum declarations which
2590 could cause type-errors when calling ROOM on large images.
2591 * bug fix: if file compilation is aborted, the partial fasl is now
2592 deleted, and COMPILE-FILE returns NIL as the primary value.
2593 * bug fix: number of thread safety issues relating to SBCL's internal
2594 hash-table usage have been fixed.
2595 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2596 be returned from its body when the values were being returned
2597 using unknown-values return convection and the W-P-O was wrapped
2598 inside an UNWIND-PROTECT.
2599 * bug fix: sb-posix should now compile again under Windows, enabling
2600 slime to work again.
2602 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2603 * incompatible change: hash-table accessor functions are no longer
2604 automatically protected by locks. Concurrent accesses on the same hash-table
2605 from multiple threads can give inconsistent results or even corrupt the
2606 hash-table completely. Multi-threaded applications should do their own
2607 locking at the correct granularity. In the current implementation it is
2608 still safe to have multiple readers access the same table, but it's not
2609 guaranteed that this property will be maintained in future releases.
2610 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2611 and will signal an error at runtime.
2612 * enhancement: SB-THREAD package now exports a semaphore interface.
2613 * enhancement: CONS can now stack-allocate on x86 and
2614 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2616 * enhancement: nested lists can now be stack allocated on
2617 platforms providing stack allocation support.
2618 * enhancement: dynamic-extent support has been extended to support
2619 cases where there are multiple possible sources for the stack
2621 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2622 if the mutex is uncontested on Linux.
2623 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2624 as specified by the CLHS. (thanks to Tobias Rittweiler)
2625 * bug fix: NaN comparison now works on x86-64.
2626 * bug fix: CLOSE :ABORT T on a stream with pending output now
2628 * bug fix: instances of non-standard metaclasses using standard
2629 instance structure protocol sometimes missed the slot type checks
2631 * bug fix: known functions can be inlined in high-debug code.
2633 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2634 * minor incompatible change: the MSI installer on Windows no longer
2635 associates .lisp and .fasl files with the installed SBCL.
2636 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2637 on Windows. (thanks to Luis Oliviera)
2638 * new feature: SB-CLTL2 contrib module now implements
2639 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2640 * optimization: scavenging weak pointers is now more efficient,
2641 requiring O(1) instead of O(N) per weak pointer to identify
2642 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2643 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2644 method bodies using constant slot-names when the first argument is
2645 a specializer parameter for the method.
2646 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2647 names, when the class of the instance is a direct instance
2648 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2649 as slow as the constant slot-name case.)
2650 * optimization: member type construction is now O(N) instead
2652 * optimization: UNION and NUNION are now O(N+M) for large
2653 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2655 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2656 now more readable in environments like Slime which display it.
2657 (thanks to Tobias C. Rittweiler)
2658 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2659 was able to infer the correct argument type for the object on which
2660 the CAS operation was being performed.
2661 * bug fix: copy propagation interfered with parallel assignment
2662 semantics in local calls. (reported by Paul Khuong)
2663 * bug fix: the signed modular fixnum shift compiled to wrong code on
2664 x86 and x86-64. (spotted by a slight modification to some of
2667 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2668 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2669 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2670 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2672 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2673 and generic function now print the object identity for anonymous
2674 instances. (thanks to Attila Lendvai)
2675 * enhancement: as an extension to MOP, SBCL now supports SETF of
2676 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2677 (thanks to Attila Lendvai)
2678 * enhancement: sb-cover has an alternate annotation mode which puts
2679 the form annotations at the car of the form, instead of annotating
2680 it completely. The benefit of this mode is that it shows better
2681 which forms were instrumented by the compiler.
2682 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2683 by printer control variables. (reported by Dan Corkill)
2684 * bug fix: system leaked memory when delayed output was performed by
2685 the OS in smaller chunks then expected. (thanks to David Smith)
2686 * bug fix: system leaked memory when file streams were not closed
2688 * bug fix: large objects written to slow streams that were modified
2689 after the write could end up with the modified state written to
2690 the underlying file descriptor.
2691 * bug fix: multiple threads operating in parallel on the same stream
2692 could cause buffer-overflows.
2693 * bug fix: source location information is stored correctly
2694 (broken since 1.0.6). This bug would generally show up as the
2695 Slime debugger highlighting the wrong form when the sldb-show-source
2697 * bug fix: Branch forms are again annotated as branches in the sb-cover
2699 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2700 on x86-64. (reported by Gregory Vanuxem)
2701 * bug fix: EQUALP could return wrong results for structures with raw
2702 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2703 word). (reported by Vjacheslav Fyodorov)
2704 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2707 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2708 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2709 atomic compare-and-swap operations on threaded platforms.
2710 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2711 allows assigning a global minimum value to optimization qualities
2712 (overriding proclamations and declarations).
2713 * enhancement: closed over variables can be stack-allocated on x86
2715 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2717 * optimization: slot definition lookup is now O(1). This speeds up
2718 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2719 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2720 * optimization: ASSOC and MEMBER can now be open-coded for all
2721 combinations of keyword arguments when second argument is constant
2722 and SPEED >= SPACE. In other cases a specialized version is
2724 * bug fix: using obsoleted structure instances with TYPEP and
2725 generic functions now signals a sensible error.
2726 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2727 (reported by Kristoffer Kvello)
2728 * bug fix: backtrace construction is now more careful when making
2729 lisp-objects from pointers on the stack, to avoid creating bogus
2730 objects that can be seen by the GC.
2731 * bug fix: defaulting of values in contexts expecting more than 7
2732 variables now works on x86-64. (reported by Christopher Laux)
2733 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2735 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2736 as the property-list of a symbol.
2737 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2738 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2739 situations requested, are once again file-compileable. (reported
2742 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2743 * MOP improvement: support for user-defined subclasses of
2744 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2745 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2746 the expansion of DEFMETHOD, is responsible for generating a form
2747 which creates a list of specializers when evaluated. Additional
2748 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2749 debugging and introspective support.
2750 * minor incompatible change: the (unsupported) spinlock interface
2751 has changed: free spinlock now has the value NIL, and a held spinlock
2752 has the owning thread as its value.
2753 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2754 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2756 * enhancement: name of a socket-stream is now "a socket" instead of
2757 "a constant string".
2758 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2759 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2760 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2761 for generic functions. (Thanks to Tobias C. Rittweiler)
2762 * optimization: bignum printing speed has been improved by 20-40%
2763 (depending on the bignum size.)
2764 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2766 * bug fix: the cache used by the CLOS to store precomputed effective
2767 methods, slot offsets, and constant return values is now thread and
2769 * bug fix: generic function dispatch function updating is now thread
2770 and interrupt safe (in the sense that the known issues have been
2772 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2773 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2774 * bug fix: asdf systems with dependencies to the SB-POSIX or
2775 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2776 * bug fix: interrupt safety of applicable method computation has been
2779 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2780 * new contrib: sb-cover, an experimental code coverage tool, is included
2781 as a contrib module.
2782 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2783 significantly faster.
2784 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2785 produce more efficient code on x86-64 if the compiler can determine
2786 that (+ INDEX <constant>) does not require a bounds check and FOO
2787 has an element type at least 8 bits wide.
2788 * enhancement: a new, experimental synchronous timeout facility is
2789 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2790 * enhancement: when a symbol name conflict error arises, the
2791 conflicting symbols are always printed with a package prefix.
2792 (thanks to Kevin Reid)
2793 * enhancement: stepping is now once again supported on the SPARC and
2794 MIPS platforms. (It is also now more likely to work on CheneyGC
2796 * enhancement: sb-sprof can now also track and report accurate call
2798 * bug fixes: the treatment of non-standard subclasses of
2799 SB-MOP:SPECIALIZER is more correct.
2800 * incompatible change: PURIFY no longer copies the data from the
2801 dynamic space into the static and read-only spaces on platforms
2802 that use the generational garbage collector
2803 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2805 * bug fix: GC race condition occasionally resulting in crashes with
2806 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2808 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2810 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2811 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2812 * bug fix: an asynchronous interrupt could previously leave the
2813 system running with GC inhibited.
2814 * bug fix: a DECLARE form evaluated at top-level now causes an error
2815 rather than silently (or verbosely) returning NIL.
2816 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2817 result in a error being signalled due to source form lookup errors.
2818 (reported by Peter Graves)
2820 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2821 * incompatible change: removed writer methods for host-ent-name,
2822 host-ent-addresses -- changing the values did not update the DNS
2824 * minor incompatible change: changed experimental JOIN-THREAD interface
2825 * documentation: the manual now lists reader and writer methods
2826 in class slot documentation sections. (thanks to Richard M Kreuter)
2827 * documentation: unwinding from asyncronous events has been
2828 documented as unsafe.
2829 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2830 in multithreaded application code.
2831 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2832 platforms. (thanks to James Anderson for the optimization hint)
2833 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2835 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2836 variants no longer cons.
2837 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2838 their NOT- variants no longer cons.
2839 * optimization: EQUAL hash tables no longer use SXHASH for objects
2840 of all data types, but instead use an EQL hash for types for which
2841 EQUAL is the same as EQL.
2842 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2843 are significantly faster.
2844 * optimization: new STRING-OUTPUT-STREAM implementation is much
2845 faster for large outputs and conses 30% less on average.
2846 * enhancement: XREF information is now collected for references made
2847 to global variables using SYMBOL-VALUE and a constant argument.
2848 * enhancement: SIGINT now causes a specific condition
2849 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2850 * bug fix: FILE-POSITION used to signal an error in some cases where
2851 ANSI requires it to return NIL.
2852 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2853 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2854 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2856 * bug fix: bad type declaration in the CLOS implementation has
2857 been fixed. (reported by James Anderson)
2858 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2859 (thanks to Lutz Euler)
2860 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2861 required by the CLHS. (reported by Samium Gromoff)
2862 * bug fix: dead unbound variable references now signal an error.
2863 (reported by Marco Monteiro)
2864 * bug fix: / with an unused value was being deleted in safe code.
2865 (thanks to Marco Monteiro and Kevin Reid)
2866 * bug fix: number of characters that can be written onto a single
2867 line in a file is unlimited.
2868 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2869 been fixed by inhibiting interrupts for when GC is disabled.
2870 * bug fix: some interrupt safety issues with GETHASH, (SETF
2871 GETHASH), CLRHASH and REMHASH have been fixed.
2872 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2873 specifier no longer causes infinite recursion.
2874 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2875 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2876 * bug fix: an &environment argument with the correct variable information
2877 is passed to macros that are expanded during byte compilation.
2878 (reported by Samium Gromoff)
2879 * bug fix: a logic error was causing the hash function for bignums to
2880 have excessive amounts of collisions. (reported by Faré Rideau)
2881 * bug fix: modifying the contents of an array could change the return
2882 value of SXHASH on that array, which is only allowed for strings
2883 and bit vectors. (bug introduced in 0.9.16)
2884 * improvement: the x86-64/darwin port now passes all tests (except
2885 for the debugger tests) but should still be considered
2886 experimental until this is fixed.
2887 * improvement: a style-warning is signaled for CASE (etc) clauses with
2888 duplicate keys. (thanks to Kevin Reid)
2889 * improvement: macos/x86 and macos/x86-64 now use mach exception
2890 handlers for dealing with illegal instructions (for trapping and
2891 error handling) and memory protection violations (for GC).
2893 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2894 * new platform: experimental support for x86-64/darwin (MacOS).
2895 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2896 and getnameinfo sockets functions are used instead of gethostbyaddr
2897 and gethostbyname, on platforms where the newer functions are available.
2898 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2900 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2901 don't print the startup banner, but behave as if --noinform was passed
2902 as a command line argument. (thanks to Kevin Reid)
2903 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2904 * optimization: code using alien values with undeclared types is much faster.
2905 * optimization: the compiler is now able to open code SEARCH in more cases.
2906 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2907 * bug fix: using standardized COMMON-LISP special variables as loop
2908 variables no longer signals bogus package lock violations. (reported
2910 * bug fix: declaring local loop variables to be of a range-limited type
2911 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2912 (reported by Andras Simon)
2913 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2914 bugs remain on x86-64.)
2915 * bug fix: the #= and ## reader macros now interact reasonably with
2916 funcallable instances.
2917 * bug fix: type-checks for function arguments were compiled using the
2918 compiler policy settings of the wrong lexical environment (in 1.0.2
2920 * bug fix: SHADOW accepts characters as string designators, as required
2921 by the spec (thanks to Eric Marsden)
2922 * bug fix: fixed GC safety issues when foreign functions are called with
2923 non-base strings as arguments
2924 * bug fix: more consistent error output for fatal-compiler-warnings, like
2926 * bug fix: functions with proper names were showing up as NIL in
2927 backtraces (reported by Edi Weitz, regression in 1.0.2)
2929 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2930 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2931 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2932 produce more efficient code on the x86 if the compiler can determine
2933 that (+ INDEX <constant>) does not require a bounds check and FOO
2934 has an element type at least 8 bits wide.
2935 * bug fix: references to undefined variables are handled the same way
2936 in toplevel forms as in the normal compiler
2937 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2939 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2940 (thanks to Jon Buller)
2941 * improvement: faster compilation times for complex functions
2942 * improvement: added readlink support to SB-POSIX (thanks to Richard
2945 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2946 * improvement: experimental support for mach exception handling on
2947 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2949 * improvement: support for GBK external format.
2950 (thanks to Chun Tian (binghe))
2951 * improvement: the debugger now displays variables that have been closed
2952 over, in code compiled with (DEBUG 2) or higher
2953 * improvement: support for executable cores on NetBSD (thanks to
2955 * new feature: added a RESTART-FRAME debugger command
2956 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2957 be used to provide an implementation for FILE-POSITION on Gray streams
2958 (thanks to Eric Marsden)
2959 * new feature: add syslog, openlog and closelog support to SB-POSIX
2960 (thanks to Richard Kreuter)
2961 * optimization: the function call overhead in code compiled with
2962 a high DEBUG optimization setting is significantly
2963 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2964 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2965 (thanks to Tony Martinez)
2966 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2967 evaluated once (reported by Kevin Reid)
2968 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2969 works again (thanks to Kilian Sprotte)
2970 * bug fix: an error is signaled for tagbodies with duplicate tags
2971 (thanks to Stephen Wilson)
2972 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2973 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2974 stack frames from alien callbacks.
2975 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2976 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2977 65k pages (thanks to David Woodhouse)
2978 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2980 changes in sbcl-1.0.1 relative to sbcl-1.0:
2981 * new platform: FreeBSD/x86-64, including support for threading.
2982 * new feature: the compiler stores cross-referencing information
2983 about function calls (who-calls), macroexpansion (who-macroexpands)
2984 and special variables (who-binds, who-sets, who-references) for code
2985 compiled with (< SPACE 3). This information is available through the
2986 sb-introspect contrib.
2987 * new feature: users may subclass SEQUENCE, and have instances of
2988 these classes interoperate with standard Common Lisp functions if
2989 a number of methods are defined. (This feature is experimental
2990 and the interface subject to change based on feedback from SBCL
2991 users and the general community)
2992 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2993 x86/x86-64, rather than the previous fixed depth of 8
2994 * improvement: another pthread back-end of mutex "pthread-futex".
2995 * bug fix: non-ascii command-line arguments are processed correctly
2996 (thanks to Yaroslav Kavenchuk)
2997 * bug fix: non-required arguments were not passed correctly when a method
2998 defined using DEFMETHOD was called from a mop-generated method using
2999 CALL-NEXT-METHOD (reported by Pascal Costanza)
3000 * bug fix: recursion is now permitted in accessors through
3001 SLOT-UNBOUND. (reported by Pascal Costanza)
3002 * bug fix: an error was signaled at startup if the HOME environment
3003 variable was defined, but had an empty value (reported by Peter Van Eynde)
3004 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
3005 signal a PROGRAM-ERROR, not a BUG.
3006 * bug fix: SB-POSIX:READDIR works when built with large file support.
3007 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
3009 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
3010 for better automatic indentation support. (thanks to Matt Pillsbury)
3011 * optimization: loading generic functions no longer takes O(n^2) time,
3012 proportional to the amount of methods in the generic function
3013 (reported by Todd Sabin and Jeremy Brown)
3014 * optimization: the FIND and POSITION family of sequence functions
3015 are significantly faster on arrays whose element types have been
3017 * improvements to the Windows port:
3018 ** Intermittent heap corruption problems have been fixed. (thanks
3019 to Alastair Bridgewater)
3020 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
3022 ** Lisp is able to unwind foreign exception frames from alien
3023 callbacks. (thanks to Alastair Bridgewater)
3025 changes in sbcl-1.0 relative to sbcl-0.9.18:
3026 * improvement: experimental support for threading on FreeBSD/x86.
3027 (thanks to NIIMI Satoshi)
3028 * improvement: runtime option --dynamic-space-size can be used
3029 to set the size of the dynamic space reserved on startup.
3030 * improvement: floating point modes in effect are now saved in
3031 core, and restored on startup.
3032 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
3033 startup, not time since first call to GET-INTERNAL-REAL-TIME.
3034 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
3035 threads are not running after *SAVE-HOOKS* have run.
3036 * improvement: writes to CLOS instance slots are type-checked in code
3037 compiled with (SAFETY 3)
3038 * improvement: floating-point exception handling on FreeBSD (thanks to
3040 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
3041 (thanks to Zach Beane)
3042 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
3044 * improvement: added support for the Shift-JIS external format.
3045 (contributed by NIIMI Satoshi)
3046 * improvement: callbacks are supported on Linux/PPC. (thanks to
3048 * bug fix: compiler bug triggered by a (non-standard) VALUES
3049 declaration in a LET* was fixed. (reported by Kaersten Poeck)
3050 * bug fix: file compiler no longer confuses validated and already
3051 dumped structurres. (reported by Kaersten Poeck)
3052 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
3053 fill-pointer signals a type-error as required. (thanks to
3055 * bug fix: disassemly of funcallable instances works.
3056 * bug fix: single stepping on PPC.
3057 * bug fix: fix thread-safety problems in the type system (generally
3058 manifesting as nonsensical errors like "STRING is a bad type specifier
3059 for sequences" or "The value 1 is not of type FIXNUM")
3060 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
3061 (reported by Josip Gracin)
3062 * bug fix: an error is signaled for attempts to displace arrays with
3063 incompatible element types (thanks to Mario Mommer)
3064 * bug fix: more correct handling of wide characters in debug info
3065 (bug reported by Attila Lendvai and fixed by Juho Snellman)
3066 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
3067 and don't cause extra consing
3068 * optimization: MAP and MAP-INTO are significantly faster on vectors
3069 whose elements types have been declared.
3070 * Improvements to SB-SPROF:
3071 ** Support for allocation profiling
3072 ** Reduced profiling overhead, especially for long profiling runs
3073 * Improvements to the Windows port:
3074 ** floating point exceptions are now reported correctly.
3075 ** stack exhaustion detection works partially.
3076 ** more accurate GET-INTERNAL-REAL-TIME.
3077 ** better RUN-PROGRAM behaviour in case of errors in the child
3079 ** PROBE-FILE now simplifies pathnames correctly.
3080 ** DIRECTORY now works correctly with :WILD-INFERIORS.
3081 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
3082 1st 1970 (although time timezone data will be unreliable).
3083 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
3085 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
3086 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
3087 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
3089 * bug fix: two potential GC deadlocks affecting threaded builds.
3090 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
3091 returns T (reported by Anton Kazennikov)
3092 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
3093 with non-variable places
3094 * bug fix: remove a race condition in the setting of
3095 funcallable-instance functions, this should make threaded CLOS
3096 code more stable against memory faults.
3097 * bug fix: corruption of specials when unbinding is interrupted by an
3098 asynchronous unwind (reported by Hannu Koivisto)
3099 * improvement: the debugger will now also display local variables that
3100 are only used once, for code compiled with a DEBUG optimization quality
3103 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
3104 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
3105 * incompatible change: External-format support for FFI calls. The
3106 SB-ALIEN:C-STRING no longer implies an ASCII
3107 external-format. Instead the string is subject to external-format
3108 conversion. Additionally return values of type SB-ALIEN:C-STRING
3109 are by default of type (SIMPLE-ARRAY CHARACTER), not
3110 SIMPLE-BASE-STRING. For an alien type that behaves like the old
3111 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
3112 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
3113 * incompatible change: SB-EXT package no longer contains the
3114 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
3115 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
3117 * incompatible change: the single-stepper is no longer available
3118 on Alpha, Mips and Sparc platforms.
3119 * minor incompatible change: the direct superclasses of
3120 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
3121 not (STANDARD-OBJECT FUNCTION). This makes the
3122 class-precedence-lists of GENERIC-FUNCTION and
3123 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
3125 * minor incompatible change: the default stream external format on
3126 non-unicode SBCL is no longer detected from the locale, but is always
3128 * new feature: Add a version of evaluator that uses an interpreter instead
3129 of the compiler. EVAL still uses the compiler by default, to switch it
3130 to use the interpreter, set the value of the variable
3131 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
3132 * minor incompatible change: the single-stepper REPL has been merged
3133 with the normal debugger (see the "Stepping" heading of the debugger help
3134 for more details). The debugger command STEP will no longer switch
3135 to the single-stepper REPL.
3136 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
3137 for a type now works.
3138 * bug fix: loading of default sysinit file works. (thanks to Leonid
3140 * bug fix: better detection of circularities in the file-compiler.
3141 (reported by Marco Monteiro)
3142 * bug fix: the CL pathname functions now work with files that have
3143 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
3144 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
3145 systems with Unix98 pty semantics.
3146 * bug fix: ASDF-INSTALL will now work with bsd tar.
3147 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
3149 * bug fix: timers expiring in dead threads no longer cause a
3150 type-error (reported by Paul "Nonny Mouse").
3151 * bug fix: thanks to more lightweight single-stepper instrumentation,
3152 code compiled with (DEBUG 3) will compile and execute significantly faster,
3153 and will have more accurate type-inferencing than before
3154 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
3155 whose bindings are modified
3156 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
3157 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
3158 ** replace dummy implementations of CL:MACHINE-INSTANCE and
3159 CL:SOFTWARE-VERSION with proper version
3161 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
3162 * feature: implemented the READER-METHOD-CLASS and
3163 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
3164 as specified by AMOP.
3165 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
3167 * optimization: faster LOGCOUNT implementation on x86 and x86-64
3168 (thanks to Lutz Euler)
3169 * optimization: hashing of general arrays and vectors has been
3170 improved. (reported by Any Fingerhut)
3171 * enhancement: SB-INTROSPECT is now able to find definitions of
3172 profiled functions. (thanks to Troels Henriksen)
3173 * enhancement: compiler-macro expansion applies now to FUNCALL forms
3174 as well, allowing compiler-macros for SETF-functions to expand.
3175 * enhancement: step-instrumentation no longer wraps known
3176 single-value functions with multiple-value context, allowing
3177 better type inference.
3178 * fixed bug #337: use of MAKE-METHOD in method combination now works
3179 even in the presence of user-defined method classes. (reported by
3180 Bruno Haible and Pascal Costanza)
3181 * fixed bug #339(c): if there are applicable methods not part of any
3182 long-form method-combination group, call INVALID-METHOD-ERROR.
3183 (reported by Bruno Haible)
3184 * fixed bug #361: the :FUNCTION initarg in the protocol for
3185 initialization of methods can now be used to override
3186 internally-produced optimized functions. (reported by Bruno
3188 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
3189 system-provided lambda expression no longer cause warnings about
3190 unbound #:|pv-table| symbols.
3191 * bug fix: improved the handling of type declarations and the
3192 detection of violations for keyword arguments with non-constant
3194 * bug fix: potentially erronous calls to PATHNAME and
3195 MERGE-PATHNAMES were being flushed in some cases.
3196 (reported by Richard Kreuter)
3197 * bug fix: compiled calls to TYPEP were mishandling obsolete
3198 instances. (reported by James Bielman and Attila Lendvai)
3199 * bug fix: format strings with ~> without matching ~< no longer
3200 trigger an AVER, but signal an understandable error instead.
3201 (reported by Antonio Martinez)
3202 * bug fix: specifying an output-file without a pathname-type for
3203 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
3204 of input-file instead of "fasl". (reported by Robert Dodier)
3205 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
3206 (reported by James Y Knight).
3207 * bug fix: compiler-macros-function did not consider the environment
3208 argument for shadowing by local functions.
3209 * bug fix: compiler-macros expansion was inhibited by local INLINE
3211 * bug fix: inline expansions of known functions were subject to
3212 step-instrumentation in high debug policies, leading to problems
3213 with type-inference.
3214 * bug fix: compiler failed to differentiate between different CONS
3215 types in some cases.
3216 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
3217 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
3218 * bug fix: #368: incorrect use of expressed vs. upgraded array
3220 * bug fix: #306a: more precise unions of array types.
3221 * thread-safety improvements:
3222 ** CONDITION-WAIT could return early on Linux, if the thread was
3223 interrupted and subsequently continued with SIGCONT.
3224 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
3226 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
3227 * added support for the ucs-2 external format. (contributed by Ivan
3229 * minor incompatible change: pretty printing of objects of type
3230 (cons symbol) is, in the default pprint-dispatch-table, now
3231 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3233 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3234 called later in a class's lifetime, possibly as late as when the
3235 first instance of the class is created. Previously,
3236 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3237 class became finalizeable.
3238 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3239 for multibyte external-format streams. (thanks to "vbzoli")
3240 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3241 with :ALLOCATION :CLASS inherited from superclasses of the
3243 * fixed bug: anonymous classes can now be created using the :NAME
3244 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3245 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3246 * fixed bug: core-files saved with :EXECUTABLE T can again be
3247 executed when SBCL_HOME isn't set. (reported by James Knight)
3248 * fixed bug: toplevel LOCALLY forms with declarations could
3249 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3250 * fixed bug: printing from several different threads using different
3251 values of *print-case* could cause invalid output, due to
3252 some internal special variables of the printer not being bound
3253 thread-locally (reported by Max Mikhanosha)
3254 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3255 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3256 (reported by Pascal Costanza)
3257 * fixed bug: FINALIZE-INHERITANCE is called from
3258 REINITIALIZE-INSTANCE on classes when the class has previously
3259 been finalized, as required by AMOP.
3260 * minor code generation optimizations:
3261 ** better register allocation in CLOS dispatching functions
3262 ** overflow detection when coercing signed bytes to fixnums on x86-64
3263 ** is now implemented with one IMUL instruction instead of three shifts
3264 ** more efficient bit-vector access on x86 and x86-64
3265 ** more efficient access to raw structure slots on x86 and x86-64
3266 * fixed some bugs revealed by Paul Dietz' test suite:
3267 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3268 return its argument.
3270 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3271 * feature: thread support on Solaris/x86, and experimental thread support
3273 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3275 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3276 default method for SLOT-UNBOUND.
3277 * minor incompatible change: prevent the user from specializing the
3278 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3279 somewhat counter to the intent of the protocol, I (CSR) think, and
3280 additionally it just doesn't work in SBCL as currently
3281 implemented, thanks to optimizations (that are always valid for
3282 the other three SLOT-VALUEish functions, but not for the setter).
3283 * minor incompatible change: the :SB-LDB feature is now enabled by
3284 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3285 the low-level debugger.
3286 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3287 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3288 down to an SB-SYS:FD-STREAM, allowing direct communication in
3289 more cases. Temporary files and pipes are still used as a fallback
3291 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3292 on the non-reentrant C functions localtime(3) and gmtime(3).
3293 * bug fix: global optimization policy was not visible in LOCALLY and
3295 * bug fix: class objects can be used as specializers in methods.
3296 (reported by Pascal Costanza)
3297 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3298 with a type error. (reported by blitz_ on #lisp)
3299 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3300 failed with a type error. (reported by Pascal Bourguignon)
3301 * bug fix: merging pathnames against defaults with :DIRECTORY
3302 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3303 (reported by James Y Knight)
3304 * bug fix: saving large (>2GB) cores on x86-64 now works
3305 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3306 constant index and a (simple-array (signed-byte 32)) array
3307 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3308 error (patch by Robert J. Macomber)
3309 * feature: TIME now displays the amount of run-time spent in GC
3310 * bug fix: The debugger now does a better job of respecting
3311 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3312 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3313 workaround for bug 403.)
3314 * bug fix: floating point exception handling now works on FreeBSD
3315 (thanks to NIIMI Satoshi)
3316 * fixed some bugs revealed by Paul Dietz' test suite:
3317 ** MISC.641: LET-conversion were not supposed to work in late
3319 * improvements to the Win32/x86 port:
3320 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3321 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3323 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3324 * new feature: source path information is generated for macro-expansion
3325 errors for use in IDE's like Slime (thanks to Helmut Eller)
3326 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3327 * bug fix: compiler does not loop forever on an invalid type in
3329 * improvement: compilation of most CLOS applications is significantly
3331 * optimization: added a limited bytecode compiler for simple toplevel
3332 forms, speeding up compilation and FASL loading
3333 * bug fix: the statistical profiler now properly distinguishes anonymous
3336 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3337 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3338 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3339 into subclasses of the finalized class. Now user calls to
3340 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3341 system return before any subclasses are finalized.
3342 * minor incompatible change: The reader no longer ignores errors
3343 regarding non-existent packages in #+ and #- feature tests.
3344 * new feature: command line options --no-sysinit, --no-userinit to
3345 inhibit loading the corresponding init files
3346 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3347 for sending data through UDP sockets (thanks to François-René Rideau)
3348 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3349 error is signalled instead (thanks to François-René Rideau)
3350 * minor incompatible change: Error signalling behaviour of lexical
3351 operations violating package locks has changed slightly. Refer to
3352 documentation on package locks for details.
3353 * enhancement: EVAL can process IF-expressions without resorting to the
3355 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3356 constant-folded properly due to missing out-of-line functions.
3357 (reported by Mika Pihlajamäki)
3358 * bug fix: LISTEN sometimes returned T even in cases where no data was
3359 immediately available from the stream
3360 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3361 were reversed. (reported by Levente Mészáros)
3362 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3363 when given a vector displaced to an adjustable array. (reported
3365 * bug fix: derivation of float boundaries from numbers outside the
3366 appropriate float range (reported by John Wiseman)
3367 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3369 * bug fix: precomputing cache entries for generic functions with
3370 some subclasses of specializers as yet invalid does not attempt to
3371 fill a cache line with a negative offset. (reported by Levente
3373 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3374 allow condition class objects as arguments to DOCUMENTATION and
3375 (SETF DOCUMENTATION); only find and set documentation for
3376 structure names for the STRUCTURE doc-type. (suggested by Gary
3378 * improvements to the Win32/x86 port:
3379 ** (user-homedir-pathname) and default initialization file
3380 locations now know about the user's "Documents and Settings"
3381 directory (thanks to Yaroslav Kavenchuk)
3382 ** run-program is implemented (thanks to Mike Thomas)
3383 ** sockets support (thanks to Timothy Ritchey)
3384 ** better backtrace support (thanks to Alastair Bridgewater)
3385 ** sb-grovel supported
3386 ** asdf-install and sb-posix work somewhat
3387 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3388 * improvements to the Solaris/x86 port:
3389 ** works on Solaris 11/Solaris Express
3390 ** floating-point exception handling support
3391 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3392 * fixed some bugs revealed by Paul Dietz' test suite:
3393 ** REMOVE-METHOD returns its generic function argument even when
3394 the method is not one of the generic functions' methods.
3395 ** objects declared as MEMBER types can be admissible arguments to
3396 structure accessors.
3397 ** printing characters should simply be printed by the FORMAT ~:C
3399 ** compiler failure when compiling functions with hairy constant
3400 defaults for optional parameters.
3401 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3402 function, which is already optimized.
3404 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3405 * new platform: experimental support for SBCL x86/Darwin, including
3406 MacOS X 10.4.5 on Intel.
3407 * new feature: Unicode character names are now known to the system
3408 (through CHAR-NAME and NAME-CHAR).
3409 * new feature: the filesystem location of SBCL's core file is
3410 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3411 * minor incompatible change: the contrib modules SB-POSIX and
3412 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3413 this change is to make it easier to distribute
3414 location-independent binaries.
3415 * bug fix: as implied by AMOP, standardized classes no longer have
3416 slots named by external symbols of public packages. (reported by
3418 * optimization: calling functions via constant symbols -- as in
3419 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3420 via the function object as in (FUNCALL #'FOO).
3421 * optimization: on x86 and x86-64, the calling convention for the
3422 case of dealing with an unknown number of values has been altered
3423 to be friendlier to the prediction heuristics implemented,
3424 particularly with reference to CALL and RET pairing. (thanks to
3425 Alastair Bridgewater)
3426 * optimization: on x86, the code for access to thread-local symbol
3427 values and binding/unbinding of thread-local symbols is smaller.
3428 (thanks to Alastair Bridgewater)
3429 * enhancement: CONSTANTP is now able to determine constantness of
3430 more complex forms, including calls to constant-foldable standardized
3431 functions and some special forms beyond QUOTE.
3432 * fixed bug: occasional GC crashes on Solaris/x86
3433 * optimization: x86-64 supports stack allocation of results of simple
3434 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3435 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3436 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3437 (thanks to James Knight)
3438 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3439 by the standard (thanks to Stephen Compall)
3441 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3442 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3443 be used for bundling the runtime and the core file into one
3444 executable binary. This feature is not currently supported on all SBCL
3445 platforms. (thanks to James Bielman and NIIMI Satoshi)
3446 * new feature: a generational or ephemeral garbage collector is now
3447 the default on the PowerPC platform (both Linux and Darwin). The
3448 old Cheney (stop and copy) collector is a build-time option.
3449 (thanks to Cyrus Harmon, after Raymond Toy)
3450 * minor incompatible change: the method by which SBCL finds its
3451 contributed modules has changed; it no longer relies on symbolic
3452 links from an $SBCL_HOME/systems directory, but searches directly
3453 in the subdirectories of $SBCL_HOME.
3454 * enhancement: the dynamic heap size on the Linux/PPC platform is
3455 markedly larger, even using the older Cheney garbage collector.
3456 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3457 certain complicated string types. (reported by Gary King)
3458 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3459 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3460 * fixed bug: DOCUMENTATION on structures no longer signals an
3461 error if no structure type of the right name exists. (reported by
3463 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3464 applicable non-standard primary or :AROUND method on
3465 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3466 no longer cause unbound variable errors. (reported by Kevin Reid)
3467 * fixed bug: metacircle resolution in cases where methods have slots
3468 added before the slots from STANDARD-METHOD. (reported by Jean
3470 * fixed bug: the Power PC assembly code for calling into lisp
3471 sometimes computed its return address wrongly (depending on the
3472 15th bit of the address, fixed at link time). This used to
3473 manifest itself in a segmentation violation while building PCL.
3474 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3475 many others over the years)
3476 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3477 the stack pointer (treated as a signed integer) is negative.
3478 (thanks to Peter van Eynde)
3480 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3481 * new platform: experimental support for the Windows operating
3482 system has been added. (thanks to Alastair Bridgewater)
3483 * fixed several bugs in and robustified the PPC FFI (including
3484 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
3485 * bug fix: allow non-simple string symbol names (reported by Paul
3487 * bug fix: interrupt handling on NetBSD (thanks to Richard M
3489 * bug fix: saving a core corrupted callbacks on x86/x86-64
3490 * bug fix: closed a loophole in metacircularity detection and
3491 grounding in the PCL implementation of CLOS.
3492 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
3493 (reported by tomppa on #lisp)
3494 * bug fix: clear the direction flag on Lisp -> C transitions, as
3495 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3496 (reported by Andrej Grozin and Hendrik Maryns)
3497 * optimization: major improvements to GC efficiency on GENCGC platforms
3498 * optimization: faster implementation of EQUAL
3499 * optimization: emit more efficient opcodes for some common
3500 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3501 * optimization: several other minor code-generation improvements on x86-64
3502 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3504 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3505 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3506 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3507 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3508 by ANSI as a generic function, and for consistency (SETF
3509 GENERIC-FUNCTION-NAME) is treated likewise.
3510 * fixed bug #233.b: make constraint propagation notice when a variable
3511 value is changed after it is referenced but before it is used
3512 * fixed bug #296: no more arbitrary behaviour from filenames with
3513 odd characters as --load arguments. (reported by Adam Warner)
3514 * fixed bug #390: :CHARACTER-SET pathname components now work as
3515 expected. (reported by Tim Daly Jr)
3516 * fixed bug #391: complicated :TYPE intersections in slot
3517 definitions no longer cause an error in PCL internals.
3518 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3519 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3520 returning the number of octets which would be written to the
3521 file-stream. (thanks to Robert J. Macomber)
3522 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3523 arguments to the internal stream functions. (thanks to David
3525 * bug fix: stack exhaustion is now handled on the x86/SunOS
3526 platform. (thanks to Daisuke Homma)
3527 * bug fix: more accurate ROOM results on GENCGC platforms
3528 * optimization: improved type inference for arithmetic-for
3529 index variables in LOOP
3530 * optimization: faster floating-point SQRT on x86-64
3531 * fixed some bugs revealed by Paul Dietz' test suite:
3532 ** DOCUMENTATION returns NIL instead of "" for method combinations
3533 that don't have a docstring
3535 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3536 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3537 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3538 therefore are not customizeable by user code (as seems to be at
3539 least permitted and maybe required by AMOP). As a consolation,
3540 however, the SBCL implementation of these functions now calls
3541 REINITIALIZE-INSTANCE as specified by AMOP.
3542 * bug fix: slot-definition documentation is propagated as per ANSI
3543 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3544 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3545 argument, as do eslotd initialization methods. (from Pascal
3546 Costanza's "Closer" project)
3547 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3548 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3550 * bug fix: it is now possible to have more than one subclass of
3551 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3552 (reported by Bruno Haible, Pascal Costanza and others)
3553 * bug fix: the dependent update protocol now works for generic
3554 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3555 and Pascal Costanza)
3556 * bug fix: condition-class instances corresponding to
3557 DEFINE-CONDITION forms are now created eagerly. (reported by
3558 Kalle Olavi Niemitalo on comp.lang.lisp)
3559 * bug fix: floating point printing is more accurate in some
3560 circumstances. (thanks to Simon Alexander)
3561 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3562 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3563 * bug fix: callbacks on OS X now preserve stack-alignment.
3564 (thanks to Cyrus Harmon)
3565 * enhancement: the x86-64 disassembler is much better at
3566 disassembling SSE instructions. (thanks to Lutz Euler)
3567 * enhancement: CHECK-TYPE on a variable now allows type-inference
3568 (thanks to Vincent Arkesteijn)
3569 * optimization: improved performance of EUC-JP external format.
3570 (thanks to NIIMI Satoshi)
3571 * optimization: performance improvements to IO on file streams of
3572 :ELEMENT-TYPE CHARACTER
3573 * optimization: much faster memory allocation on x86-64
3574 * optimization: faster garbage collections (latency and throughput)
3576 * optimization: faster bignum subtraction and division on x86 and x86-64
3577 (thanks to Lutz Euler)
3578 * optimization: more accurate type-inference for loops that use a
3579 floating point index variable or a negative step.
3581 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3582 * bug fix: add a workaround to SBCL looping infinitely at startup on
3583 Linux kernels with apparently buggy implementations of personality().
3584 (thanks to Svein Ove Aas)
3585 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3586 (thanks to David Lichteblau)
3587 * bug fix: local bindings shadow global symbol macros for
3588 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3589 * optimization: non-open coded uses of numeric comparison operators
3590 (e.g. >) no longer cons when called with more than one parameter
3591 on platforms supporting dynamic-extent allocation.
3592 * enhancement: saving cores with foreign code loaded is now supported
3593 on MIPS/Linux in addition to the previously supported platforms.
3594 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3595 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3596 * bug fix: division by zero in sb-sprof when no samples were collected
3597 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3598 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3599 (thanks to Alexander Kjeldaas)
3600 * new feature: ignoring the return values of destructive functions
3601 like NREVERSE signals a compile-time style-warning.
3602 (thanks to Kevin Reid)
3603 * new feature: the alignment of alien structure fields can be
3604 explicitly specified. (thanks to Cyrus Harmon)
3605 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3606 and dump core on SIGQUIT
3608 ** incompatible change: threads do not inherit values of specials
3609 from their parents (see manual)
3610 ** bug fix: threads stacks belonging to dead threads are freed by the
3611 next exiting thread, no need to gc to collect thread stacks anymore
3612 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3613 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3614 ** bug fix: dynamic variable and thread start related gc lossage
3615 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3617 * fixed some bugs revealed by Paul Dietz' test suite:
3618 ** SUBTYPEP is slightly more accurate on heinously complicated
3619 CONS types where some of the members have uncertain (in the
3620 NIL, NIL sense) type relationships to each other.
3622 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3623 no longer purified unless :PURIFY T is explicitly specified.
3624 ** Non-purified cores are significantly smaller than before
3626 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3627 * new feature: timers based on Zach Beane's excellent timer package
3628 * added support for the following external formats: koi8-u,
3629 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3630 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3631 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3632 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3633 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3634 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3635 * incompatible change: a threaded SBCL will no longer revert to
3636 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3637 * bug fix: interrupts are disabled until startup is complete; no
3638 more sigsegvs when receiving a signal to soon
3639 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3641 * bug fix: add a workaround for the memory randomization features in
3642 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3643 workaround will only be in effect on systems with the proc filesystem
3645 * bug fix: printing objects of type HASH-TABLE signals a
3646 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3648 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3649 have been running for over 50 days. (reported by Gilbert Baumann)
3650 * bug fix: the logic for getting names of functions gets less
3651 confused when confronded with alternate-metaclass
3652 funcallable-instances. (reported by Cyrus Harmon)
3653 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3654 consistent, even on internal alternate-metaclass objects.
3655 * bug fix: flush closure information collected by physical
3656 environment analysis prepass before the main pass. (bug reported
3658 * bug fix: compiler pack phase does not modify a hashtable, which is
3659 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3660 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3661 may be expanded. (reported by Alexander <malishev> on c.l.l)
3662 * bug fix: no more style-warnings when compiling code using LAST
3663 under high-SPEED low-SPACE settings. (reported by David Wallin
3665 * fixed some incompatibilities between SBCL's MOP and the MOP
3667 ** the METAOBJECT class is now implemented;
3668 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3669 STANDARD-OBJECT, as required;
3670 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3671 now compatible (as required by VALIDATE-SUPERCLASS); there
3672 remains a consistency requirement over the presence or absence
3673 of the FUNCTION class in the superclass list of finalized
3674 classes; see the manual for more details;
3675 ** the :AROUND method for COMPUTE-SLOTS on
3676 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3677 requested slot ordering.
3679 ** bug fix: parent thread now can be gc'ed even with a live
3681 ** bug fix: binding a special with PROGV to no value is not
3682 the same as that symbol not having been bound (thanks to
3684 ** bug fix: binding specials is thread safe (thanks to
3686 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3687 and SB-SPROF do not die with 'no handler for signal XX in
3688 interrupt_handle_now(..)' anymore
3689 ** bug fix: WITH-TIMEOUT works with multiple running threads
3690 * fixed some bugs revealed by Paul Dietz' test suite:
3691 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3692 the :method-class keyword argument.
3694 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3695 * new port: the Solaris operating system on x86 processors is now
3696 mostly supported, though some rough edges in the environment
3697 remain. (thanks to Daisuke Homma)
3698 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3699 space for its heap. (thanks to Thiemo Seufer)
3700 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3701 closures. (thanks to Thiemo Seufer)
3702 * minor incompatible change: eof selects abort in the debugger.
3703 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3704 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3706 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3707 deprecated, and will go away in a future revision of SBCL.
3708 * minor incompatible change: GC-ON and GC-OFF are no longer
3709 implemented with a counter, it does not matter how many times gc
3710 is switched on or off
3711 * bug fix: discriminating functions for generic function classes
3712 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3713 make invalid assumptions about method precedence order. (reported
3715 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3716 platforms. (thanks to Thiemo Seufer)
3717 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3718 * bug fix: correct pathname printing with printer escaping is on.
3719 (thanks to Kevin Reid)
3720 * bug fix: complex VOP definitions in "user-space" no longer trigger
3721 package locks. (reported by Zach Beane)
3722 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3723 for funcallable-instance functions, and is no different from
3725 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3726 characters in the current readtable. (reported by Nicholas Neuss)
3727 * bug fix: SUBTYPEP on various CONS types returns more a more
3728 accurate acknowledgment of its certainty.
3729 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3730 lists in some cases. This partially fixes bug 384.
3731 * flush all standard streams before prompting in the REPL and the
3733 * bug fix: signal handling and triggering gc do not conflict
3734 directly anymore, in particular a high frequency sb-sprof does
3735 not prevent gc from running
3736 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3737 approximation for timezone and DST information between the
3738 universal time epoch and the smallest negative 32-bit time_t.
3739 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3740 year 1899 so long as the encoded time is non-negative.
3741 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3742 the correct answer for non-constant rotate amounts when performing
3743 an inline 32-bit rotation.
3745 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3746 there is only one thread in the session
3747 ** bug fix: memory leak for streams created in one thread and
3748 written to in another
3749 ** bug fix: lockup when compiled with gcc4
3750 ** bug fix: race that allows the gc to be triggered when gc is
3752 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3753 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3755 ** bug fix: finished threads are gc'ed properly
3756 * fixed some bugs revealed by Paul Dietz' test suite:
3757 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3758 has arguments with a different set of applicable methods from
3759 the orignal arguments.
3760 ** The type error thrown by MAP now has a correct expected-type
3762 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3763 name a compiled function.
3764 ** Three MISC tests where a large bignum was improperly coerced to
3765 a float that couldn't represent that bignum during type
3766 derivation were fixed.
3767 ** SUBTYPEP can now handle types involving the negation of a
3768 list-form FUNCTION type.
3769 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3770 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3771 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3773 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3774 * New feature: Experimental support for bivalent streams: streams
3775 opened with :element-type :default now allow character and binary
3776 (unsigned-byte 8) I/O
3777 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3778 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3780 * bug fix: no more highly sporadic "couldn't check whether ~S is
3781 readable" when reading a stream and an interrupt hits in the middle
3782 of a select system call
3783 * compiler better recognizes complex arrays (reported by Eduardo
3785 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3786 for variables on SBCL built with linkage-tables. (reported by Luis
3788 * various error reporting improvements.
3789 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3790 (Thanks to Thiemo Seufer)
3791 * bug fix: nested reader invokations work correctly
3792 * bug fix: it is possible to have simultaneous references to foreign
3793 code and foreign data with the same name.
3795 ** added x86-64 support
3796 ** incompatible change: the threading api now works with thread
3797 objects instead of thread ids
3798 ** bug fix: threads are protected from signals and interruption when
3799 starting up or going down
3800 ** bug fix: a race where an exiting thread could lose its stack to gc
3801 ** bug fix: don't halt on infinite error in threads if possible
3802 ** fixed numerous gc deadlocks introduced in the pthread merge
3803 ** bug fix: fixed thread safety issues in read and print
3804 ** bug fix: debugger doesn't hang on session lock if interrupted at
3805 an inappropriate moment
3806 ** bug fix: run-program is now thread safe(r)
3807 ** bug fix: inner with-recursive-lock no longer releases the mutex
3808 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3809 * fixed some bugs revealed by Paul Dietz' test suite:
3810 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3811 EXPECTED-TYPE slots filled.
3812 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3814 ** MAKE-CONDITION accepts classes as type-designators.
3815 ** COMPILE may never return NIL.
3816 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3817 range before calling Unix time functions
3819 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3820 * numerous signal handling fixes to increase stability
3821 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3822 * minor incompatible change: we now correctly canonize default
3823 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3824 as per the MOP, rather than the historical (INITARG INITFUNCTION
3825 INITFORM). (reported by Bruno Haible)
3826 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3827 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3828 for more information.
3829 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3830 pathname is a directory pathname.
3831 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3832 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3834 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3835 :METACLASS argument in addition to a class name. (reported by
3836 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3837 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3838 (reported by Bruno Haible; patch from Gerd Moellmann)
3839 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3841 * bug fix: more cleanups to the floating point exception handling on
3842 x86-64 (thanks to James Knight)
3843 * bug fix: the compiler does not try to constant fold calls of
3844 COERCE and BIT-* functions when they return freshly constructed
3845 objects. (reported by Nikodemus Siivola and Paul Dietz)
3846 * optimization: improved the MIPS versions of generic (in the
3847 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3848 * optimization: direct conversion of (unsigned-byte 32) to floats on
3849 the PowerPC platform.
3850 * optimization: structure instances with raw slots now use less
3851 memory, and probably show better memory locality. (thanks to
3853 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3854 are treated as requests for stack allocation on the x86-64,
3855 Alpha-32, PPC and SPARC platforms.
3856 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3857 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3858 (thanks to Tony Martinez)
3860 ** gcing a dead thread can no longer lead to lockups
3861 ** threads block signals until they are set up properly
3862 ** errno is no longer shared by threads
3863 ** interrupt-thread restores the eflags register on x86
3864 ** fixed some lockups due to gc/thread interaction
3865 * fixed some bugs revealed by Paul Dietz' test suite:
3866 ** invalid dotted lists no longer raise a read error when
3867 *READ-SUPPRESS* is T
3868 ** signal an error if a symbol that names a declaration is used
3869 as the name of a type, or vice versa
3870 ** allow using the (declare (typespec var*)) abbreviation for
3871 (declare (type typespec var*)) with all type specifiers
3872 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3873 ** always return NIL from PPRINT-POP when OBJECT is NIL
3874 ** don't signal errors when pretty-printing malformed LABELS,
3875 FLET or MACROLET forms
3876 ** declarations in a DOLIST body are also in scope for the
3878 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3880 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3883 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3884 * fixed cross-compiler leakages that prevented building a 32-bit
3885 target with a 64-bit host compiler.
3886 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3887 opened with :IF-EXISTS :OVERWRITE.
3888 * fixed bug 281: error for an invalid qualifier in a short-form method
3889 combination method is not signalled until the faulty method is called.
3890 * bug fix: iteration variable type inferrer failed to deal with open
3891 intervals. (reported by Alan Shields)
3892 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3893 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3894 or more runtime options were provided to the sbcl binary.
3895 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3896 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3897 * optimization: there's now a fast-path for fixnum arguments in the
3898 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3899 * optimization: the code generated on x86-64 is more compact thanks
3900 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3901 * bug fix: floating-point exception handling now partly works on
3902 x86-64. (Thanks to James Knight)
3903 * improvement to the MIPS backend from Thiemo Seufer: C-style
3904 64-bit long long arguments and return values to alien functions
3906 * fixed some bugs revealed by Paul Dietz' test suite:
3907 ** the type-error signalled from WARN has a filled-in DATUM slot.
3908 ** the type-error required when a stream is not associated with
3909 a file has the stream as its datum.
3910 ** type-errors on single-floats on x86-64 no longer have
3911 :INVALID-OBJECT as the datum
3912 ** the type-errors signalled for invalid function names now have
3913 a correct expected type
3914 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3915 for structures defined with a :TYPE. Documentation strings for
3916 typed structures are no longer immediately discarded
3917 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3918 broadcast streams and synonym streams. FILE-LENGTH now also works
3919 on broadcast streams.
3921 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3922 * incompatible change: the --noprogrammer option, deprecated since
3923 version 0.7.5, has been removed. Please use the equivalent
3924 --disable-debugger option instead.
3925 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3927 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3928 inoperational for a while now) has been completely removed.
3929 * null lexical environments are now printed as #<NULL-LEXENV>,
3930 significantly reducing the amount of clutter in typical backtraces.
3931 * documentation on weak pointers, finalization, and after GC hooks
3932 has been added to the manual.
3933 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3934 as other specialized array types, is much faster. SUBSEQ and
3935 COPY-SEQ on such arrays have also been sped up.
3936 * optimization: EQL is now more efficient when at least other argument
3937 is known to be of type (OR FIXNUM (NOT NUMBER)).
3938 * fixed bug: the runtime is now less vulnerable to changes in the
3939 size of the SBCL object on OS X, and virtual memory is reserved for
3940 all spaces that need to be at a fixed address.
3941 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3942 * fixed bug: finalizers and after GC hooks that cause consing are now
3944 * fixed bug: compiler error messages and summaries are now printed to
3945 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3946 * fixed inference of the upper bound of an iteration variable.
3947 (reported by Rajat Datta).
3948 * fixed bug 211e: calling local functions with duplicated constant
3949 keyword argument no longer causes a bogus style warning about an
3951 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3952 ftype declaration to be disregarded. (reported by Dave Roberts)
3953 * fixed bug 373: caused by erronous compilation of references to alien
3954 variables in the runtime on ppc/darwin.
3955 * fixed bug 376: CONJUGATE type deriver.
3956 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3957 (reported by Baughn on #lisp)
3958 * a cross-compiler bug on non-x86 platforms has been identified and
3959 fixed. (thanks to Bruno Haible)
3960 * improvements to the MIPS runtime code for increased stability.
3961 (thanks to Thiemo Seufer)
3962 * increased the maximimum compact environment size to allow
3963 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3964 * partial workaround for bug 135: don't name the function we're
3965 calling for hairy cases of EVAL, so as not to accumulate one environment
3966 entry per call to EVAL. (reported by Kevin Reid)
3967 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3968 * optimization: type testing for non-vector arrays should be faster.
3969 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3971 * bug fix: setting 31st element of a bit vector to zero did not work
3973 * bug fix: redefining a class definition which failed due to a
3974 previous accessor / function clash now works (but see BUGS entry
3975 #380 for more problems in this area). (thanks to Zach Beane)
3976 * the long form of DEFINE-METHOD-COMBINATION disables method group
3977 checking when given a single method group with pattern *. (thanks
3979 * on x86 compiler supports stack allocation of results of simple
3980 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3981 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3982 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3983 * fixed some bugs related to Unicode integration:
3984 ** the restarts for recovering from input and output encoding
3985 errors only appear when there is in fact such an error to
3987 * fixed some bugs revealed by Paul Dietz' test suite:
3988 ** MISC.549 and similar: late transformation of unsafe type
3989 assertions into derived types caused unexpected code
3991 ** SCALE-FLOAT type deriver is less wrong.
3992 ** type derivers for EXP, LOG and similar functions compute result
3993 types for complex arguments better.
3994 ** (MISC.563) CONJUGATE type deriver works for very restricted
3996 ** out-of-line type testers for character strings are available.
3997 ** EQUAL compiler transform understands specialness of objects
3999 ** accessing double-floats stored on the stack now works on x86-64.
4000 ** debugger internals could sometimes create invalid lispobjs,
4001 resulting in GC crashes.
4002 ** MISC.548: type check weakening can convert required type into
4004 ** initialization forms for bindings are not in scope of free special
4007 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
4008 * incompatible change: thread support for non-NPTL systems has
4009 been removed - locking is buggy and unreliable. A threaded
4010 SBCL build will now warn at startup and refuse to create
4011 new threads, unless futex support is detected in the kernel
4012 * incompatible change: the top level REPL now has only an ABORT
4013 restart associated with it, not TOPLEVEL and ABORT as it used to.
4014 TOP and TOPLEVEL are now available as debugger commands for
4015 returning to the top level.
4016 * incompatible change: forms evaluated in the REPL now use the
4017 global optimization policy.
4018 * incompatible change: user- and system-initialization files are
4019 no longer processed with LOAD, but by READ and EVAL; hence the
4020 global optimization policy, startup package, readtable, etc,
4022 * The .fasl file format number has been incremented because of
4023 various incompatible changes.
4024 * internal entry point details and argument counts no longer appear
4025 in backtraces unless explicitly requested by setting
4026 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
4027 * built-in and standard functions no longer have names like "top
4028 level local call to FOO".
4029 * fixed bug 32: functions defined in non-null lexical environments
4030 now have more legible printed representation
4031 * fixed bug 33: functions defined in non-null lexical environemnts
4032 are now more amenable to inspection by INSPECT.
4033 * workaround for bug 354: XEPs no longer appear in backtraces unless
4034 explicitly requested.
4035 * fixed bug: receiving the signal which results from attempting to
4036 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
4037 SIGBUS on other *BSDs) on architectures where the C stack is also
4038 the Lisp stack (x86 and x86-64) from foreign code no longer leads
4039 to debugger confusion or wild instability. (reported by Cheuksan
4041 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
4042 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
4043 (reported by Lutz Euler)
4044 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
4045 compiled code. (reported by Paul Dietz)
4046 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
4047 specialized parameter to a method to something that is not TYPEP
4048 the specializer is now possible.
4049 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
4050 face of package deletion.
4051 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
4052 pathname. (reported by David Tolpin on c.l.l)
4053 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
4054 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
4055 STRING-STREAM and FILE-STREAM, respectively.
4056 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
4057 than previously; in addition, its test suite is now run on build.
4058 (thanks to Luke Gorrie)
4059 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
4060 * optimization: added a immediate representation for single-floats
4062 * fixed some bugs revealed by Paul Dietz' test suite:
4063 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
4064 ** attempting to create a package with a colliding nickname causes
4065 correctable errors to be signalled.
4066 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
4067 ** several x86-64 backend bugs related to sign-extension of immediate
4070 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
4071 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
4072 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
4074 * fixed loading of multiply forward-referenced layouts.
4075 (thanks to Cheuksan Wang)
4076 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
4077 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
4078 (see COMPILE-FILE documentation for details of :PRINT option)
4079 * fixed bugs 19 and 317: fixed-format floating point printing is
4080 more accurate. This also fixes a bug reported by Adam Warner
4081 related to the ~@F format directive.
4082 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
4084 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
4085 dispatch table if the from-char is a dispatch macro character.
4086 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
4087 by the wordsize no longer ignore the last word. (reported by Lutz
4089 * fixed bug in type checking of dynamic-extent variables. (reported
4091 * optimization: sequence traversal functions use their freedom to
4092 coerce function designators to functions.
4093 * optimization: code with many calls to CLOS methods specialized on
4094 CLOS classes has had redundant type checks removed.
4095 * optimization: added declarations to speed up operations that access
4096 the internal character database (for example STRING-UPCASE)
4097 * optimization: comparison operations between floats and sufficiently small
4098 fixnums no longer create extra rationals
4099 * fixed some bugs related to Unicode integration:
4100 ** portions of multibyte characters at the end of buffers for
4101 character-based file input are correctly transferred to the
4102 start of the buffer at the next read.
4103 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
4104 passing it through to OPEN.
4105 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
4106 argument given to internal calls to OPEN.
4107 ** the built-in comment readers (introduced by character sequences
4108 ";" and "#|") are more forgiving to encoding errors; they will
4109 STYLE-WARN and then attempt to resync the stream at a character
4110 boundary. (thanks to Teemu Kalvas)
4111 * fixed some bugs in the x86-64 port:
4112 ** Negative short int return values from c-calls are sign-extended
4114 ** The stack is aligned to 16-bytes for c-calls, as required by
4115 the ABI. (thanks to Cheuksan Wang)
4116 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
4117 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
4118 for enums. (thanks to Vincent Arkesteijn)
4119 ** Multiple small optimizations and bugfixes for floating point
4121 * fixed some bugs revealed by Paul Dietz' test suite:
4122 ** Space, Tab, Linefeed, Return and Page have the invalid
4123 secondary constituent character trait.
4124 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
4126 ** WITH-INPUT-FROM-STRING should only update the index place on
4128 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
4129 works more reliably.
4130 ** Bit-array operations (BIT-AND and similar) worked incorrectly
4131 with one-dimensional arrays with fill pointers.
4132 ** TYPE-OF failed on a complex with an integer realpart and a
4134 ** compiler failure during type inference for the code of form
4135 (IF (EQL X (THE ...)) ...) (MISC.535).
4137 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
4138 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
4139 platform. The port supports 61-bit fixnums, large memory spaces
4140 and reloading shared object files.
4141 * enhancement: saving cores with foreign code loaded is now
4142 supported on ppc/Darwin in addition to the previously supported
4144 * enhancement: the statistical profiler now walks deeper into the
4145 call stack for more meaningful call-graphs and accrued time
4146 reports (x86/x86-64 only). It also now reports time spent in
4148 * enhancement: it is now possible to trace most individual methods
4149 of a generic function in addition to tracing the generic function
4151 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
4153 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
4154 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
4155 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
4156 produces an error. (thanks to Vincent Arkesteijn)
4157 * bug fix: NAMESTRING on pathnames with :WILD components in their
4158 directories works correctly. (thanks to Artem V. Andreev)
4159 * fixed bug 125: compiler preserves identity of closures. (reported
4161 * bug fixed: functions with &REST arguments sometimes failed with
4162 "Undefined function" when compiled with (DEBUG 3). (reported by
4164 * bug fix: overflow during compiling of setting element of a bit
4165 vector with constant index and value. (reported by Timmy Douglas)
4166 * build fix: fixed the dependence on *LOAD-PATHNAME* and
4167 *COMPILE-FILE-PATHNAME* being absolute pathnames.
4168 * on x86 compiler partially supports stack allocation of dynamic-extent
4170 * GO and RETURN-FROM do not check the extent of their exit points
4171 when compiled with SAFETY 0.
4172 * fixed some bugs related to Unicode integration:
4173 ** encoding and decoding errors are now much more robustly
4174 handled; it should now be possible to recover even from invalid
4175 input or output to the terminal. (thanks to Teemu Kalvas)
4176 ** provided a first cut at implementing STRING-TO-OCTETS and
4177 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
4178 ** altered the SB-MD5 contributed module slightly, changing the
4179 interface just enough for it to be supportable for builds where
4180 lisp characters are not eight bits.
4181 * fixed some bugs revealed by Paul Dietz' test suite:
4182 ** the FORMATTER-generated functions for ~V[ conditionals require
4183 the correct number of arguments.
4184 ** READ-FROM-STRING returns the mandated second value when applied
4185 to displaced strings.
4186 ** the #\Rubout and #\Backspace characters are treated as invalid
4187 constituent characters by the tokenizer.
4189 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
4190 * new feature: reloading changed shared object files with
4191 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4192 * new feature: references to foreign variables and functions
4193 can now be compiled and loaded before the corresponding shared
4194 object file is loaded, as long as the foreign definitions are
4195 available at runtime.
4196 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
4197 supported. (thanks to Dan Debertin)
4198 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
4199 just keywords. (thanks to Vincent Arkesteijn)
4200 * fixed bug #331: structure-class instances corresponding to
4201 DEFSTRUCT forms are now created eagerly.
4202 * fixed bug #345: backtraces from calls to undefined functions work
4203 on x86 as well. Related bug #61 is now also partially fixed on x86
4204 (backtraces from throws to unknown catch tags.)
4205 * bug fix: lambda-list parsing is now stricter vrt. order and number
4206 of lambda-list keywords.
4207 * bug fix: as specified by AMOP, an error is signalled if a
4208 class-option appears multiple times in a DEFCLASS form. (reported
4210 * bug fix: RANDOM can be compiled when the compiler derives the type
4211 of its numeric argument as a disjoint set of small integers.
4212 (reported by Paul Dietz)
4213 * bug fix: starting a core saved with shared objects loaded when
4214 those objects are not available no longer causes threaded SBCL to
4215 hang. (reported by Sean Ross)
4216 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
4218 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
4219 argument, which must always be NIL. (reported by Kalle Niemitalo)
4220 * bug fix: printing 1.0d+23 no longer results in an error.
4221 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
4222 * bug fix: structure slot setters preserve evaluation order. (thanks
4224 * fixed some bugs related to Unicode integration:
4225 ** RUN-PROGRAM can allow its child to take input from a Lisp
4226 stream. (reported by Stefan Scholl)
4227 ** ASDF-INSTALL successfully downloads .tar.gz files in all
4228 locales. (reported by Ken Causey)
4229 * fixed some bugs revealed by Paul Dietz' test suite:
4230 ** INCF, DECF and REMF evaluate their place form as specified in
4232 ** FORMATTER expands ~{ ~} iteration directives with V or #
4233 parameters correctly.
4234 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4235 consequent uses no arguments correctly.
4236 ** the system has a partial understanding of the (COMPLEX RATIO)
4238 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4241 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4242 * new feature: a build-time option (controlled by the :SB-UNICODE
4243 keyword feature, enabled by default) for building the system with
4244 support for the entire 21-bit character space defined by the
4246 * new feature: the system now has rudimentary external-format
4247 support; the primary user-visible change at this time is that
4248 characters with the high bit set (such as lower-case-e-acute) will
4249 print correctly to a terminal in a UTF-8 environment.
4250 * minor incompatible change: BASE-CHAR no longer names a class;
4251 however, CHARACTER continues to do so, as required by ANSI.
4252 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4253 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4254 has been moved to the SB-EXT package (temporarily re-exported from
4256 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4257 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4259 * fixed bug #351: better error-handlind and reporting for malformed
4261 * fixed bug #350: bignum-printing is now more memory-efficient,
4262 allowing printing of very large bignums, eg. (expt 2 10000000).
4263 (reported by Bruno Haible)
4264 * fixed bug #302: better primitive-type selection for intersection
4266 * fixed bug #308: non-graphic characters now all have names, as
4267 required. (reported by Bruno Haible)
4268 * bug fix: redefining a class with different superclasses now correctly
4269 removes it from the direct-subclasses of its previous superclasses.
4270 (reported by David Morse)
4271 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4272 new value now works. (reported by Bruno Haible)
4273 * bug fix: correct canonicalization of multiple non-standard slot
4274 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4275 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4276 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4277 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4278 now exists, an signals an error.
4279 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4280 during macroexpansion for non-iteration variables as well. (reported
4281 by Bruno Haible for CMUCL)
4282 * bug fix: Cyclic structures and unprintable objects in compiler
4283 messages no longer cause errors. (reported by Bruno Haible)
4284 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4285 and READ-FROM-STRING all now return a primary value of NIL if
4286 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4287 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4288 (reported by Bruno Haible for CMUCL)
4289 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4290 do not designate a condition. (reported by Bruno Haible for
4292 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4293 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4294 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4295 permitting resolution in favour of any of the conflicting symbols.
4296 (reported by Bruno Haible for CMUCL)
4297 * bug fix: EQUAL compiler optimizations is less aggressive on
4298 strings which can potentially compare true despite having distinct
4299 specialized array element types.
4300 * bug fix: unit enumerations can be defined without dividing by
4301 zero. (thanks to Vincent Arkesteijn)
4302 * FORMAT compile-time argument count checking has been enhanced.
4303 (report from Bruno Haible for CMUCL)
4304 * a partial workaround for the bug 262: the compiler does not try to
4305 inline-expand a local function doing RETURN-FROM from a deleted
4306 BLOCK. (thanks to Peter Denno for the bug report and to David
4307 Wragg for the simple test case)
4308 * fixed some bugs revealed by Paul Dietz' test suite:
4309 ** RENAME-PACKAGE allows all package designators as new package
4311 ** constraint propagation and lambda variable substitution are
4312 more cautious in dealing with partially deleted code.
4313 ** compiler sometimes lost reoptimization passes.
4314 ** CERROR, given a condition as condition designator, passes its
4315 remaining arguments to the continue format control without
4317 ** Case-altering FORMAT directives work correctly on non-ASCII
4319 ** The REAL type specifier handles bounds outside the floating
4320 point ranges without signalling FLOATING-POINT-OVERFLOW.
4321 ** Functions with IR1-transformations can create intercomponent
4322 references to global functions.
4323 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4325 ** FORMAT ~R treats a nil value for its first parameter correctly.
4327 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4328 * enhancement: saving cores with foreign code loaded is now
4329 supported on x86/NetBSD and sparc/Linux in addition to the previously
4330 supported platforms.
4331 * bug fix: on some platforms repeated installations caused multiple
4332 copies of HTML documentation to be installed -- should not happen
4333 any more. (reported by Stefan Scholl)
4334 * bug fix: parsing self-recursive alien record types multiple times
4335 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4336 original patch by Helmut Eller for CMUCL)
4337 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4338 (thanks to Richard Kreuter)
4339 * bug fix: defining classes whose accessors are methods on existing
4340 generic functions in other (locked) packages no longer signals
4341 bogus package lock violations. (reported by François-René Rideau)
4342 * bug fix: special variables as DEFMETHOD parameters no longer have
4343 associated bogus type declarations. (reported by David Wragg and
4345 * bug fix: read-write consistency on streams of element-type
4346 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4347 * bug fix: redefiniton of the only method of a generic function with
4348 no DEFGENERIC no longer emits a full WARNING. In addition,
4349 redefinition of generic functions with no DEFGENERIC to an
4350 incompatible lambda list now signals an error. (thanks to Zach
4352 * bug fix: DEFGENERIC now works even when there's a function of the
4353 same name in an enclosing lexical environment. (thanks to Zach
4355 * fixed compiler failure, caused by instrumenting code during
4356 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4357 * optimization: added loop analysis and improved register allocation
4358 * fixed some bugs revealed by Paul Dietz' test suite:
4359 ** POSITION on displaced vectors with non-zero displacement
4360 returns the right answer.
4361 ** (SIMPLE-STRING) is a valid type specifier for sequence
4363 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4365 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4366 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4368 ** The justification version of the FORMAT ~< directive treats
4369 non-zero minpad parameter correctly.
4371 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4372 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4373 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4374 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4375 the supported interface.
4376 * new feature: Single-stepping of code compiled with DEBUG 2 or
4377 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4378 * new feature: saving cores with foreign code loaded is now
4379 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4380 Timothy Moore's work for CMUCL)
4381 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4382 parameters to * instead of NIL if no initform is supplied.
4383 (reported by Johan Bockgaard)
4384 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4385 correctly when FUNCALL appears as the car of the form. Note:
4386 despite this FUNCALL forms are not currently subject to
4387 compiler-macro expansion. (port of Raymond Toy's fix for the
4388 same from CMUCL, reported by Johan Bockgaard)
4389 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4390 (thanks for Teemu Kalvas)
4391 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4392 case instead of terminating the iteration (thanks for Julian
4393 Squires, Sean Champ and Raymond Toy)
4394 * bug fix: incorrect expansion of defgeneric that caused a style
4395 warning. (thanks for Zach Beane)
4396 * bug fix: slot accessor effective method computation works properly
4397 for classes with multiple non-standard applicable methods on
4398 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4399 * on x86 compiler supports stack allocation of results of LIST and
4400 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4401 CMUCL implementation by Gerd Moellmann)
4402 * fixed some bugs revealed by Paul Dietz' test suite:
4403 ** FORMAT strings with both the ~<~:;~> form of the justification
4404 directive and pretty-printing directives cause an error.
4406 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4407 * incompatible change: the internal functions
4408 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4409 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4410 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4411 instead of the old functions.
4412 * new feature: on platforms where "dladdr" is available foreign
4413 function names now appear in backtraces. (based on Helmut Eller's
4415 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4416 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4418 * documentation: ASDF manual is now distributed with SBCL.
4419 * bug fix: SBCL can now load its contributed modules with REQUIRE
4420 even if the system-provided entries have been removed from
4421 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4423 * bug fix: backtraces involving undefined functions or assembly
4424 routines are more informative. (thanks to Brian Downing)
4425 * bug fix: mutually referent alien structures now work correctly.
4426 (reported by Rick Taube)
4427 * bug fix: structures defined by WITH-ALIEN can be referred to
4428 within other definitions in the same WITH-ALIEN.
4429 * bug fix: division operators (MOD, TRUNCATE and the like) with
4430 constant zero divisors and integer dividends no longer generate
4432 * bug fix: provide default methods for INPUT-STREAM-P and
4433 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4434 * bug fix: improve the detection and resolution of MOP metacycles
4435 (where effective method computation depends on the generic function
4436 having its effective method computed). (reported by Bruno Haible)
4437 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4438 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4439 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4440 * bug fix: pathnames with relative directory components can be
4441 represented relative to default pathnames.
4442 * optimization: in taking the GCD of bignums, reduce the two bignums
4443 to approximately the same size (using Euclid's algorithm) before
4444 applying the more sophisticated binary GCD. (thanks to Juho
4446 * optimization: COUNT on bitvectors now operates word-at-a-time.
4447 * optimization: ASH with a positive, but not necessarily constant,
4448 (leftwards) shift, when in a modular context, is compiled to a
4450 * fixed some bugs revealed by Paul Dietz' test suite:
4451 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4452 if the corresponding argument is NIL.
4453 ** FORMAT directives accepting a minpad parameter treat negative
4455 ** literal commas as character parameters to FORMAT directives are
4457 ** literal spaces directly after ~<Newline> directives within a
4458 format-logical-block (~:< ~@:>) do not induce :FILL-style
4459 conditional newlines.
4460 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4461 as specified: it no longer includes conditional newlines).
4462 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4464 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4465 :PER-LINE-PREFIX argument does not evaluate to a string.
4467 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4468 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4469 the manual for details; for now, package locks can be disabled by
4470 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4471 if no major problems are found then it is likely that they will be
4472 compiled in unconditionally.
4473 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4474 unsupported operators on all platforms. To load a shared library
4475 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4476 object file, link it into a shared library outside of SBCL and
4477 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4479 * bug workaround: ROOM T and the GC were not working together
4480 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4481 reporting facility aren't preserved. That reporting has been
4482 disabled, so now until and unless someone figures out how to make it
4483 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
4484 * minor incompatible change: as threatened around sbcl-0.8.0, the
4485 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
4486 The symbols are also exported from SB-PCL for backwards
4487 compatibility, but more so than before SB-PCL should be treated as
4488 an implementation-internal package.
4489 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
4491 * the SB-SPROF contrib now works on (most) non-x86 architectures.
4492 It is known as of this release not to work on the Alpha, however.
4493 * fixed bug #167: errors signalled due to illegal syntax in method
4494 bodies are now more legible.
4495 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4496 designators and can hence be used with TYPEP.
4497 * fixed bug #333: CHECK-TYPE now ensures that the type error
4498 signalled, if any, has the right object to be accessed by
4499 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4500 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4501 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4503 * fixed bug #334: programmatic addition of slots using specialized
4504 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4505 and :ALLOCATION :CLASS slots.
4506 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4507 float exponents. (rereported by Peter Seibel)
4508 * fixed a bug: #\Space (and other whitespace characters) are no
4509 longer considered to be macro characters in standard syntax by
4510 GET-MACRO-CHARACTER.
4511 * fixed bug: initialization of condition class metaobjects no longer
4512 causes an instance of the condition to be created. (reported by
4514 * fixed bug: it is now possible to have slots such that
4515 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4516 description is neither :INSTANCE nor :CLASS.
4517 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4518 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4519 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4520 non-standard SLOT-DEFINITION-ALLOCATION values.
4521 * fixed bugs: various race conditions handling exiting threads.
4522 CL-PPCRE's thread torture test now passes.
4523 * fixed arguably-a-bug: GC time proportional to number of threads in
4524 system even when most of them are idle
4525 * optimization: improved performance of BIT and SBIT on bit-vectors.
4526 * .fasl file incompatibility: The fasl file version number has
4527 been incremented because of changes associated with package locks.
4529 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4530 * minor incompatible change: the system no longer provides
4531 optimization hints (conditions which are TYPEP
4532 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4533 mode; these hints are still emitted when higher SPEED optimization
4535 * new contrib module: a sampling profiler (profiling by statistical
4536 sampling, rather than by instrumenting functions) is available as
4537 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4538 * the behaviour of the standard function ED is now customizeable by
4539 third parties through a hook variable: see ED's documentation
4540 string for information on the protocol.
4541 * the compiler no longer emits efficiency notes for (FUNCALL X)
4542 when the type of X is uncertain under default optimization
4544 * fixed bug 276: mutating a binding of a specialized parameter to a
4545 method to something that is not TYPEP the specializer is now
4547 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4548 exhibit the required behaviour on the x86 platform. (thanks to
4549 Peter van Eynde, Eric Marsden and Bruno Haible)
4550 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4551 even for difficult arguments. (reported by Peter Graves)
4552 * fixed bug 141a: the backquote printer now descends quoted
4554 * fixed another bug in backquote printing: no more destructive
4555 modification of the form's list structure. (reported by Brian
4557 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4558 move between its address being taken and the call to
4559 interrupt_thread, fixing a crashing race condition.
4560 * the SB-POSIX contrib implementation has been adjusted so that it
4561 no longer exhibits ridiculously poor performance when constructing
4562 instances corresponding to C structs.
4564 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4565 * minor incompatible change: the sb-grovel contrib now treats C
4566 structures as alien (in the sense of SB-ALIEN) objects rather than
4567 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4568 has implications for memory management of client code
4569 (sb-grovel-returned objects must now be manually managed) and for
4570 type safety (alien objects now have full types).
4571 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4572 used to control emission of compiler diagnostics, rather than the
4573 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4574 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4575 quality should be considered deprecated.
4576 * install.sh now installs the user manual as well
4577 * (not quite a new documentable feature, but worth considering in
4578 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4579 beginnings of a semantically meaningful condition hierarchy is
4580 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4582 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4583 designator as the defaults argument.
4584 * fixed bug: Displaced arrays whose displaced-to array has become
4585 too small now cause ARRAY-DIMENSION to signal an error, providing
4586 for safer bounds-checking. (reported by Bruno Haible)
4587 * fixed bug: DEFCLASS slot definitions with identical :READER and
4588 :WRITER names now signal a reasonable error. (reported by Thomas
4590 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4592 * fixed bug: Invalid slot specification errors now print correctly.
4593 (thanks to Zach Beane)
4594 * fixed bug 320: Shared to local slot value transfers in class
4595 redefinitions now happen corrently from superclasses as
4596 well. (reported by Bruno Haible)
4597 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4599 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4600 improper lists correctly. (reported by Bruno Haible)
4601 * fixed bug 313: source-transform for <fun-name> was erroneously
4602 applied to a call of a value of a variable with name <fun-name>.
4603 (reported by Antonio Menezes Leitao)
4604 * fixed bug 307: The obsolete instance protocol ensures that
4605 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4606 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4607 remove dead unknown-values globs from the middle of the stack.
4608 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4609 easier to resume long computations after using *BREAK-ON-SIGNALS*
4610 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4611 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4612 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4613 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4614 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4615 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4617 * fixed a (fairly theoretical) bug in string printing: if
4618 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4619 does not have array-element-type equal to the most general string
4621 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4622 function name. (thanks to Nikodemus Siivola)
4623 * fixed bug: compile-time format string checker failed on
4624 non-closed ~{. (reported by Thomas F Burdick)
4625 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4626 don't warn on legal loop code involving more than one aggregate
4627 boolean. (thanks to Nikodemus Siivola)
4628 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4629 in keyword position to MAKE-PACKAGE was not being reported as
4631 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4632 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4634 * fixed bugs 280 and 312: the checking for multiple definitions in a
4635 file is less likely to become confused by uses of inline
4637 * fixed bug: the #S reader macro performs the keyword coercion
4638 specified for slot names. (reported by Kalle Niemitalo)
4639 * fixed bug: lambda lists may contain symbols whose names start with
4640 & but are not lambda-list-keywords; their occurrence triggers a
4642 * fixed bug 321: define-method-combination argument lambda lists do
4643 not cause invalid code to be generated when &optional or &aux
4644 variables have default values. (reported by Bruno Haible)
4645 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4646 have CLOS classes; this appears also to have fixed reported
4647 instability in stack exhaustion detection.
4648 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4649 MUFFLE-WARNING when no associated restart is present is now
4651 * optimization: rearranged the expansion of various defining macros
4652 so that each expands into only one top-level form in a
4653 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4655 * optimization: used a previously little-used slot in symbols to
4656 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4658 * fixed some bugs revealed by Paul Dietz' test suite:
4659 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4661 ** Fixed an optimization bug related to inheritance of initforms
4662 from local to shared slots.
4663 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4664 ** CAST optimizer forgot to flush argument derived type.
4665 ** print/read consistency on floats is now orders of magnitude
4666 more likely. (thanks also to Bruno Haible for a similar report
4668 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4669 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4670 for objects of type REAL. Make it so.
4671 ** SXHASH is specified (infelicitously) to respect similarity,
4672 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4673 it so. (thanks to Markus Ziegler)
4674 ** on the Alpha, the compiler succeeds in compiling functions
4675 returning a known number of arguments greater than 63.
4676 ** fixed handling of invalid NIL arguments in keyword position
4678 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4680 ** provided a readably-printable representation for RANDOM-STATE
4682 ** ensured that pathnames, where they have a namestring, always
4683 print using #P"..." syntax.
4685 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4686 * Support for the forthcoming 2.0 version of the NetBSD kernel
4687 running on x86 hardware has been added. (thanks to Perry
4688 E. Metzger most immediately, and others for their past work)
4689 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4690 current release version; SBCL's OpenBSD support had been broken
4691 since about the time of OpenBSD's switch to ELF binary format.)
4692 * [placeholder for DX summary]
4693 ** user code with &REST lists declared dynamic-extent, under high
4694 speed or space and low safety and debug optimization policy.
4695 * The manual has been converted to Texinfo format and the debugger
4696 chapter from the cmucl manual has been added.
4697 * A facility has been added to extract documentation strings from
4698 sbcl and store them as Texinfo-formatted snippets for inclusion in
4699 the manual (via Texinfo's @include directive)
4700 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4701 the test case to Dave Roberts)
4702 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4703 pointers. (reported by Sean Ross)
4704 * bug fix: PROFILE output is printed nicely even for large numerical
4705 values. (thanks to Zach Beane)
4706 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4707 greater than 32 handle EOF correctly.
4708 * bug fix: on X86 an immediate argument of the IMUL instruction is
4709 correctly printed in disassembly. (thanks to Lutz Euler)
4710 * bug fix: class slots in redefined classes preserve their old
4711 values. (thanks to Bruno Haible and Nikodemus Siivola)
4712 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4713 succeeds. (reported by Marco Baringer)
4714 * fixed some bugs revealed by Paul Dietz' test suite:
4715 ** READ-SEQUENCE now works on ECHO-STREAMs.
4716 ** RATIONALIZE works more according to its specification. (thanks
4719 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4720 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4721 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4722 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4723 should matter to you only if you rebind the printer control
4724 variables and then find you want different bindings in the
4725 debugger than in the ordinary execution of your program.)
4726 * The runtime build system has been tweaked to support building
4727 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4728 assembler and linker. (thanks to Nikodemus Siivola)
4729 * Unbound, undefined, undeclared variables now trigger full
4730 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4731 more often programmer error than deliberate exploitation of undefined
4733 * optimization: the hash algorithm for strings has changed to one
4734 that is less vulnerable to spurious collisions. (thanks to Juho
4736 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4737 needless bounds checking. (thanks to Juho Snellman)
4738 * optimization: implemented multiplication as a modular
4739 (UNSIGNED-BYTE 32) operation on the PPC backend.
4740 * fixed some bugs revealed by Paul Dietz' test suite:
4741 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4743 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4744 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4745 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4747 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4749 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4751 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4752 their output stream on EOF from read.
4753 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4754 have been read to end-of-file.
4755 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4757 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4758 description of determination of which consecutive characters
4760 ** Printing the "Space" character with escaping on now yields "#\\ ",
4761 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4762 ** Reading floating-point numbers with *READ-BASE* set to a number
4763 less than 10 works correctly.
4764 ** Reading floating-point numbers with *READ-BASE* set to a number
4765 more than 10 works correctly.
4766 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4767 the readtable currently in effect.
4769 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4770 * minor incompatible change: parsing of namestrings on a physical
4771 (Unix) host has changed; numbers after the final #\. in a
4772 namestring are no longer interpreted as a version field. This is
4773 intented to be largely invisible to the user, except that the
4774 meaning of the namestring "*.*.*" has changed: it now refers to a
4775 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4776 should usually be replaced by
4777 (make-pathname :name :wild :type :wild :version :wild)
4778 with the added benefit that this is more likely to be portable.
4779 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4780 option to OPEN now signals an error if the file being opened
4781 exists; this may have an impact on existing code.
4782 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4783 signals received, on the PowerPC platforms (both Linux and
4784 Darwin). (thanks to Pierre Mai for pointing out the location of
4786 * several fixes on OS X: The system now builds and runs cleanly on
4787 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4788 (thanks to Brian Mastenbrook)
4789 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4790 second-resolution: integer multiples of 1/3600 between -24 and 24.
4791 (thanks to Vincent Arkesteijn)
4792 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4793 type when called with 1 argument; PEEK-CHAR checked type of
4794 PEEK-TYPE only after having read first character from a
4795 stream. (reported by Peter Graves)
4796 * bug fix: the garbage collector now has much better locality
4797 behaviour, and in particular no longer treats all memory as being
4798 exhausted when many small objects point to each other in a deeply
4800 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4801 recognized as being TYPEP their class.
4802 * bug fix: the PUSHNEW documentation string has been corrected.
4803 (thanks to Vincent Arkesteijn)
4804 * bug fix: defaulting of the value for the last of an atypically
4805 large number of multiple values being bound was not being
4806 performed correctly on the Alpha or PPC platforms
4807 * optimization: implemented multiplication as a modular
4808 (UNSIGNED-BYTE 32) operation on the x86 backend.
4809 * optimization: SEARCH on simple-base-strings can now be open-coded.
4810 (see also contrib/compiler-extras.lisp for inspiration for
4811 teaching the compiler about the Boyer-Moore algorithm).
4812 * value, returned by MAX (and MIN) called with several EQUALP, but
4813 not EQL, arguments now does not depend on compiler settings.
4814 * fixed some bugs revealed by Paul Dietz' test suite:
4815 ** in stack analysis liveness information is propagated from
4816 non-local entry points.
4817 ** pathwise CAST removing failed when the CAST node did not start
4819 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4820 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4822 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4823 host is already defined.
4824 ** RENAME-FILE works on streams instead of signalling an internal
4826 ** PEEK-CHAR uses the current readtable when determining whether
4827 or not a character is whitespace.
4828 ** MERGE-PATHNAMES handles the case when the pathname does not
4829 specify a name while the default-pathname specifies a version.
4830 ** Pathnames now stand a better chance of respecting print/read
4832 ** Attempting to use standardized file system operators with a
4833 pathname with invalid :DIRECTORY components signals a
4835 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4837 ** DIRECTORY on logical pathnames is more correct.
4838 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4839 signal a TYPE-ERROR if their argument is not a stream.
4840 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4841 designator argument does not designate a stream.
4842 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4843 examining the synonym.
4844 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4846 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4847 element-type larger than ([UN]SIGNED-BYTE 32).
4849 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4850 * When built with the :SB-FUTEX feature, threaded builds now take
4851 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4852 for faster/more reliable mutex and condition variable support.
4853 * Incompatible change (but one you probably shouldn't have been using
4854 anyway): the interface and code for arbitrating between multiple
4855 threads in the same user session has been redesigned.
4856 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4857 error when called without an explicit environment argument.
4858 (thanks to Nikodemus Siivola)
4859 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4860 confused about their position. (thanks to Adam Warner and Gerd
4862 * bug fix: Pretty printing backquoted forms with unquotations in the
4863 argument list position of various code constructs such as LAMBDA
4864 now works correctly. (reported by Paul Dietz)
4865 * bug fix: Pretty printing unquotations no longer loses all
4866 stream position information.
4867 * optimization: performance of string output streams is now less
4868 poor for multiple small sequence writes.
4869 * optimization: performance of CSUBTYPEP in the presence of complex
4870 expressions involving CONS and NOT many times has been improved.
4871 (reported by Paul Dietz)
4872 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4874 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4875 streams for the REPL, for the debugger, and so on. (thanks to
4877 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4878 * fixed some bugs revealed by Paul Dietz' test suite:
4879 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4880 is ignored if it is too small, rather than propagating through
4881 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4882 ** extremely complex negations of CONS types were not being
4883 sufficiently canonicalized, leading to inconsistencies in
4885 ** VALUES tranformer lost derived type.
4887 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4888 * fixed a bootstrapping bug: the build process no longer assumes
4889 that the various BOOLE-related constants have the same value in
4890 host and target lisps. (noted by Paul Dietz' test suite on an
4891 SBCL binary built from CLISP)
4892 * The system can now be dynamically linked on the MIPS platform,
4893 which enables dynamic loading of foreign code from Lisp. (thanks
4894 to Ralf Baechle for discussions on the MIPS ABI)
4895 * The system now records debugging information for its own source
4896 files in a filesystem-position-independent manner, relative to
4897 the "SYS" logical host.
4898 * fixed a compiler bug: MV-LET convertion did not check references
4899 to the "max args" entry point. (reported by Brian Downing)
4900 * tweaked disassembly notes to be less confident about proclaiming
4901 some instruction as an LRA. (thanks to Brian Downing)
4902 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4903 now each have their own history, command character, and other
4904 characteristics. (thanks to David Lichteblau)
4905 * fixed some bugs revealed by Paul Dietz' test suite:
4906 ** compiler failure in compiling LOGAND expressions including a
4908 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4909 shift greater than 32.
4910 ** FLUSH-DEST did not mark blocks for type check regeneration.
4911 ** HANDLER-CASE failed to accept declarations in handler clauses
4912 in some circumstances.
4914 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4915 * New code in contrib/sb-introspect (still probably not entirely
4916 stable yet) provides some support for smart Lisp development
4917 environments like SLIME.
4918 * The conditions signalled for errors occurring when loading .fasl
4919 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4920 in a way which should help ASDF recover gracefully.
4921 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4922 stuff has been cleaned up. If you code contrib/ stuff, this might
4923 affect you, and you can look at contrib/README, contrib/STANDARDS,
4924 and/or the 0.8.4.27 diff to check.
4925 * In full calls the compiler now does not generate checks for declared
4926 argument types for all arguments.
4927 * various threading fixes
4928 ** and some experimental patches which didn't make it into
4929 the main tree for this release, but which are shipped in
4930 contrib/experimental-thread.patch as a possible fix for some
4931 failures (deadlock, spinning...) in GC-intensive multithreaded
4933 * fixed PPC build problem (source code incompatibility of different
4934 library versions): added offsetof() hackery which attempts to divine
4935 where glibc maintainers put uc_mcontext today
4936 * fixed bug 282: compiler does not trust type assertions while passing
4937 arguments to a full call.
4938 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4939 &OPTIONAL VALUES type parameter.
4940 * fix bug 214: algorithm for noting rejected templates is now more
4941 similar to that of template seletion. (also reported by rydis on
4943 * fixed bug 141b: printing backquoted information readably and prettily
4944 inserts a space where necessary.
4945 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4946 (CHARACTER 10) are now reported as errors, rather than propagated
4947 as unknown types. (reported by piso on #lisp)
4948 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4949 with values NIL and :ERROR. (thanks to Milan Zamazal)
4950 * fixed bug 191c: CLOS now does proper keyword argument checking as
4951 described in CLHS 7.6.5 and 7.6.5.1.
4952 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4953 longer raise an error; further, using a list as a for-as-arithmetic
4954 counter now raises a meaningful error.
4955 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4956 now understood by sequence creation functions such as MAKE-SEQUENCE
4958 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4959 a STRING-INPUT-STREAM.
4960 * compiler enhancement: SIGNUM is now better able to derive the type
4962 * type declarations inside WITH-SLOTS are checked. (reported by
4964 * fixed some bugs revealed by Paul Dietz' test suite:
4965 ** incorrect optimization of TRUNCATE for a positive first
4966 argument and negative second.
4967 ** compiler failure in let-convertion during flushing dead code.
4968 ** compiler failure while deriving type of TRUNCATE on an
4969 interval, containing 0.
4970 ** ASH of a negative bignum by a negative bignum count now returns
4972 ** intersection of CONS types now canonicalizes properly, fixing
4973 inconsistencies in SUBTYPEP.
4975 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4976 * incompatible change: The --disable-debugger command line
4977 option now clobbers the debugger at a more fundamental
4978 level, by redefining #'INVOKE-DEBUGGER instead of by
4979 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4980 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4981 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4982 enter the debugger REPL and then suffer recursive errors
4983 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4984 while under the new system, BREAK in --disable-debugger mode
4985 terminates the system just as an unhandled error would.
4986 * fixed compiler performance when processing loops with a step >1;
4987 * bug fix: DOCUMENTATION now retrieves generic function
4988 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4989 support has been systematized, and now supports the methods
4990 specified by ANSI, along with a default method and a method for
4991 slot documentation. (reported by Nathan Froyd)
4992 * bug fix: effective methods associated with a generic function are
4993 no longer cached over a change of that generic function's method
4994 combination. (reported by Andreas Fuchs)
4995 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4996 names a non-existent directory. (thanks to Andreas Fuchs)
4997 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4998 the PPC platform, lead to stack corruption; this has been fixed.
4999 (reported by Rainer Joswig)
5000 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
5001 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
5002 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
5003 arithmetic in general, is now much more reliable on the PPC
5005 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
5006 platform now returns the right answer.
5007 * optimization: restored some effective method precomputation in
5008 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
5009 precomputation is now tunable.
5010 * optimization: compiler-internal data structure use has been
5011 reviewed, and changes have been made that should improve the
5012 performance of the compiler by about 20%.
5013 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
5014 simple-base-strings and simple-bit-vectors is improved.
5015 * optimization: the optimization of 32-bit logical and arithmetic
5016 functions introduced in version 0.8.3 on the x86 has been
5017 implemented on the mips, ppc and sparc platforms; an
5018 implementation of the same facility, but for 64-bit arithmetic,
5019 has been added for the alpha.
5020 * microoptimization: the compiler is better able to make use of the
5021 x86 LEA instruction for multiplication by constants.
5022 * bug fix: in some situations compiler did not report usage of
5023 generic arithmetic in (SPEED 3) policy.
5024 * bug 145b fix: compiler used wrong type specifier while converting
5025 MEMBER-types to numeric.
5026 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
5028 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
5029 index argument now works properly on the Alpha platform.
5030 * bug fix: floating point exception treatment on the Alpha platform
5032 * bug fix: FILE-POSITION works much better on string input and
5033 output streams. (thanks to Nikodemus Siivola)
5034 * bug fix: many threading/garbage collection symptoms sorted.
5035 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
5036 might be pseudo-atomic.
5037 * internal change: Stopping for GC is now done with signals not
5038 ptrace. GC is now done in whichever thread wanted it, instead of
5040 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
5042 * bug fix: result form in DO is not contained in the implicit
5044 * incompatible change: ICR structure is changed; the value part of
5045 CONTINUATION is now called LVAR; corresponding functions are
5046 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
5047 * added type deriver for ISQRT (thanks to Robert E. Brown).
5048 * bug fix: better support for loading from the command line when an
5049 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
5051 * fixed some bugs revealed by Paul Dietz' test suite:
5052 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
5053 ** ROUND and FROUND now give the right answer when given very
5054 small float arguments.
5055 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
5057 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
5058 ** (GCD 0 <negative-integer>) returned <negative-integer>.
5059 ** LCM should return a non-negative integer.
5060 ** PARSE-INTEGER returned the index of a terminator instead of the
5061 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
5062 ** PARSE-INTEGER returned an incorrect index being applied to a
5064 ** LCM with two arguments of 0 returns 0 rather than signalling
5066 ** unsigned addition of a 32-bit constant with the high bit set no
5067 longer causes an internal compiler error on the x86.
5068 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
5069 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
5070 with negative last argument.
5071 ** byte specifiers with zero size and position no longer cause
5072 an error during type derivation.
5073 ** bignum multiplication on the Alpha platform now returns the
5075 * porting: The system now builds on SuSE AMD64, although it still
5076 generates a 32-bit binary.
5077 * .fasl file incompatibility: The fasl file version number has
5078 been incremented (because of the changes to internal compiler
5079 data structures referred to above).
5081 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
5082 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
5083 more accurately, on the Darwin kernel running on PowerPC hardware.
5084 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
5085 * Compiler code deletion notes now signal a condition of type
5086 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
5087 an associated MUFFLE-WARNING restart.
5088 * The compiler now performs limited argument count validation of
5089 constant format strings in FORMAT, and where appropriate in ERROR,
5090 CERROR and WARN. (thanks to Gerd Moellmann)
5091 * New ASDF-INSTALL contrib can be used for automatic download and
5092 installation of third-party Lisp code from CCLAN or other sites
5094 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
5095 which forces another thread to execute a function supplied by the
5097 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
5098 now accept and act upon their :ELEMENT-TYPE keyword argument.
5099 (reported by Martin Atzmueller, Edi Weitz)
5100 * bug fix: FILE-POSITION now accepts position designators up to
5101 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
5102 is the greater. (thanks to Patrik Nordebo)
5103 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
5104 Kalle Olavi Niemitalo)
5105 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
5106 printable. (reported by Eric Marsden)
5107 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
5108 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
5109 * x86 bug fix in control stack exhaustion checking: now shows backtrace
5110 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
5111 (thanks to Stig Sandoe)
5112 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
5113 UNREAD-CHAR now correctly includes the unread character in the
5114 target sequence. (thanks to Gerd Moellmann)
5115 * bug fix in threaded builds: the system can now be suspended and
5116 resumed by shell job control with minimal disruption.
5117 * bug fixes in times and timezones >2038AD
5118 * better handling of "where is GNU make?" problem in build scripts
5119 (thanks to Nikodemus Siivola)
5120 * new optimization: inside a named function any reference to a
5121 function with the same name is considered to be a self-reference;
5122 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
5123 optimization quality.
5124 * new optimization on x86: logical functions and + now have
5125 optimized (UNSIGNED-BYTE 32) versions, which are automatically
5126 used when the result is truncated to 32 bits.
5127 * VALUES declaration is partially enabled.
5128 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
5129 * fixed some bugs revealed by Paul Dietz' test suite:
5130 ** The system now obeys the constraint imposed by
5131 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
5132 types form a lattice under type intersection.
5133 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
5134 ** ASSOC now ignores NIL elements in an alist.
5135 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
5136 and (1+ MOST-POSITIVE-FIXNUM) answers.
5137 ** The addition of a method with invalid qualifiers to a generic
5138 function does not cause an error to be signalled immediately;
5139 a warning is signalled, and the error is generated only on
5140 calling the generic function.
5141 * changed .fasl file version number, in part to add type codes for
5142 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
5143 obscure ANSI requirements
5145 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
5146 * fixed bug 148: failure to inline-expand a local function left
5147 garbage, confusing the compiler.
5148 * fixed bugs 3cd: structure slot readers perform type check if the
5149 slot can have an invalid value (i.e. it is either not initialized
5150 or can be written with a less specific slot writer).
5151 * bug fix: the compiler now traps array references to elements off
5152 the end of an array; previously, the bounds checking in some
5153 circumstances could go off-by-one.
5154 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
5156 * type declarations for array element types now obey the description
5157 on the CLHS page "Declaration TYPE", as per discussions on
5158 sbcl-help around 2003-05-08. This means that a declaration
5159 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
5160 declaration, all references to BAR will be asserted or assumed
5161 (with THE, so dependent on compiler policy) to involve objects of
5162 type FOO. Note that no such declaration is implied in
5163 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
5164 * declared types of functions from the "Conditions"
5165 chapter. (reported by Paul Dietz)
5166 * bug fix: CERROR accepts a function as its first argument.
5167 * bug fix: NTH an NTHCDR accept a bignum as index
5168 arguments. (reported by Adam Warner)
5169 * optimization: character compare routines now optimize comparing
5170 against a constant character. (reported by Gilbert Baumann)
5171 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
5172 argument now works properly on the MIPS platform.
5173 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
5174 * repeated evaluation of the same DEFSTRUCT, a slot of which is
5175 declared to have a functional type, does not cause an error
5177 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
5178 many :DEFAULT-INITARGS. (reported by Istvan Marko)
5179 * fixed bug: if last continuation of a deleted block has a
5180 destination, this destination should be deleted too. (reported by
5182 * fixed a bug in the bootstrap process: the host compiler's values
5183 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
5184 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
5185 test case from Patrik Nordebo)
5186 * improved the ability of the disassembler on the PPC platform to
5187 provide helpful disassembly notes.
5188 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
5189 the class in more cases than previously.
5190 * bug fix: FILE-POSITION now understands :START and :END for
5191 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
5192 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
5193 8) data. (thanks to David Lichteblau)
5194 * bug fix: it is possible to add a method to a generic function
5195 without lambda list.
5196 * bug fix: reader failed to signal END-OF-FILE inside an
5197 object representation. (reported by Nikodemus Siivola)
5198 * fixed some bugs revealed by Paul Dietz' test suite:
5199 ** LAST and [N]BUTLAST should accept a bignum.
5200 ** condition slot accessors are methods.
5201 ** (VECTOR NIL) is a subtype of STRING.
5203 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
5204 * minor incompatible change: some nonsensical specialized lambda
5205 lists (used in DEFMETHOD) which were previously ignored now signal
5207 * minor incompatible change: the system is now aware of the types of
5208 variables in the COMMON-LISP package, and will signal errors for
5209 most violations of these type constraints (where previously they
5210 were silently accepted).
5211 * minor incompatible change: COMPILE-FILE now uses the freedom
5212 afforded (ANSI 3.2.2.3) to use derived function types for
5213 functions defined in the same file. This also permits the system
5214 to warn on static type mismatches and function
5215 redefinition. (Currently it does not work with high DEBUG level.)
5216 * minor incompatible change: VALUES declaration is disabled.
5217 * When issuing notes, the compiler now signals a condition of type
5218 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
5219 restart for use in user handlers. It is expected that the
5220 COMPILER-NOTE condition will eventually become a condition
5221 supertype to a hierarchy of note types, which will then be
5222 handleable in a similar fashion. However, at the moment, no such
5223 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
5224 but it's an implementation detail, not a classification for the
5226 * Changes in type checking closed the following bugs:
5227 ** type checking of unused values (192b, 194d, 203);
5228 ** template selection based on unsafe type assertions (192c, 236);
5229 ** type checking in branches (194bc).
5230 * A short form of VALUES type specifier has ANSI meaning (it has
5231 increased the number of situations when SBCL cannot perform type
5233 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5234 keywords or constants is permissible.
5235 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5236 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5237 classes. (thanks to Antonio Martinez)
5238 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5239 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5240 argument to a pretty-print stream. Instead, it leaves any such
5241 operations to DESCRIBE-OBJECT methods.
5242 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5244 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5245 lambda lists. (thanks to David Lichteblau)
5246 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5247 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5248 (thanks to Gerd Moellmann)
5249 * fixed bug 246: increased compilation speed of long
5250 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5252 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5254 * DEFCONSTANT now throws a condition of type
5255 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5256 constant to a non-EQL value; CONTINUE and ABORT restarts
5257 respectively change and preserve the value.
5258 * fixed bug 63: The code walker, part of the implementation of CLOS,
5259 is now better at handling symbol macros.
5260 * bug fix: There is no longer an internal implementation type named
5261 CL:LENGTH. (reported by Raymond Toy)
5262 * bug fix: In macro-like defining macros/special operators the
5263 implicit block does not enclose the lambda list.
5264 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5265 enclosed in parentheses) are not suitable as type specifiers, and
5266 their use properly signals an error now.
5267 * bug fix: An argument count mismatch for a type specifier in code
5268 being compiled no longer causes an unhandled error at compile
5269 time, but signals a compile-time warning.
5270 * fixed simple vector readable printing
5271 * bug fix: DESCRIBE takes more care over whether the class
5272 precedence list slot of a class is bound before accessing it.
5273 (reported by Markus Krummenacker)
5274 * bug fix: FORMATTER can successfully compile pretty-printer format
5275 strings which use variants of the ~* directive inside.
5276 * bug fix: SEARCH now applies its TEST predicate to the elements of
5277 the arguments in the correct order. (thanks to Wolfhard Buss)
5278 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5279 in type inference. (thanks to Robert E. Brown)
5280 * bug fix: Reading in symbols with an explicit package name of ""
5281 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5282 * fixed some bugs revealed by Paul Dietz' test suite:
5283 ** NIL is now allowed as a structure slot name.
5284 ** Arbitrary numbers, not just REALs, are allowed in certain
5285 circumstances in LOOP for-as-arithmetic clauses.
5286 ** Multiple class redefinitions before slot access no longer
5287 causes a type error.
5288 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5289 association between the name and a class.
5290 ** Generic functions with non-standard method-combination and over
5291 five methods all of which return constants no longer return NIL
5292 after the first few invocations. (thanks to Gerd Moellmann)
5293 ** CALL-NEXT-METHOD with no arguments now passes the original
5294 values of the arguments, even in the presence of assignment.
5295 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5297 ** DISASSEMBLE works with closures and funcallable instances.
5298 ** ADD-METHOD now returns the generic function, not the new method.
5299 ** FIND-METHOD signals an error if the lengths of the specializers
5300 is incompatible with the generic function, even if the ERRORP
5302 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5303 which its argument is a member.
5304 ** DEFCLASS only redefines the class named by its class-name
5305 argument if that name is the proper name of the class;
5306 otherwise, it creates a new class.
5307 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5308 of the UNBOUND-SLOT condition to the name of the slot.
5309 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5310 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5311 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5312 SLOT-MAKUNBOUND in the specified fashion.
5314 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5315 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5316 cross-compilation host. As a consequence, we can now bootstrap our
5317 way up to SBCL starting with a bare gcc toolchain and human-readable
5318 source code (first the source to CLISP, then the source to SBCL).
5319 * A contributed module containing a partial implementation of the
5320 simple-streams interface has been included. (thanks to Rudi
5322 * A contributed module implementing the RFC1321 Message Digest
5323 Algorithm, known as MD5, has been included.
5324 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5325 no longer has any effect, as the code controlled by this feature
5326 has been deleted. (As far as we know, no-one has ever built using
5327 this feature, and its semantics were confused in any case).
5328 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5329 work on conditions (as required by the ANSI specification),
5330 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5331 expected behaviour on conditions. Users should note, however,
5332 that such behaviour is not required by the ANSI specification,
5333 and so use of this behaviour may render their code unportable.
5334 * fixed some bugs revealed by Paul Dietz' test suite:
5335 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5337 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5338 ** SXHASH on condition objects no longer returns NIL.
5339 ** :ALLOCATION :CLASS slots are better treated; their values are
5340 updated on class redefinition, and initforms inherited from
5341 superclasses are applied.
5342 ** REMOVE-METHOD returns its generic function argument even when
5343 no method was removed.
5344 ** SHARED-INITIALIZE now initializes the values of the requested
5345 slots, including those with :ALLOCATION :CLASS.
5346 ** ALLOCATE-INSTANCE now works on structure classes defined via
5347 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5349 ** SLOT-EXISTS-P now works on conditions, as well as structures
5351 ** MAKE-LOAD-FORM now has the required methods on
5352 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5353 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5354 keyword, and now implements the SLOT-NAMES argument.
5355 ** methods with &OPTIONAL arguments no longer allow too many
5356 arguments to be passed in the call without error.
5357 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5358 option is consistent with the required arguments of the generic
5359 function lambda list.
5360 * bug fix: REQUIRE accepts a string designator. (Thanks to
5362 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5363 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5364 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5365 * bug fix: The compiler now checks for duplicated variables in macro
5367 * bug fix: SETQ on globals returns the correct value.
5368 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5369 not a COMPILER-ERROR (followed by some other strange error on
5370 choosing the CONTINUE restart).
5371 * bug fix: make.sh and friends are now more consistent in the way that
5372 they look for GNU "make".
5374 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5375 * experimental native threads support (on x86 Linux >=2.4 only).
5376 This is not compiled in by default: you need to add :SB-THREAD to
5377 the target features. See the "Beyond ANSI" chapter of the manual
5379 * fix for longstanding nonANSIism: The old distinction between
5380 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5381 The return value from CL:FIND-CLASS is now a CLOS class, and
5382 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5383 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5384 * An interface to the MetaObject Protocol, as described in Kiczales,
5385 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5386 MIT Press, 1991, is available from the SB-MOP package.
5387 * incompatible change: the SB-PCL package should now be considered
5388 a private implementation detail, and no longer a semi-private MOP
5390 * minor incompatible change: due to rearrangement for threads, the
5391 control stack and binding stack are now allocated at arbitrary
5392 addresses instead of being hardcoded per-port. Users affected by
5393 this probably have to be doing advanced things with shared
5394 libraries, and will know who they are.
5395 * minor incompatible change: Previously, all --eval forms used were
5396 processed with READ before any of them were processed with EVAL.
5397 Now each --eval form is processed with both READ and EVAL before
5398 the next --eval form is processed. (Thus package operations like
5399 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5400 work as the user might reasonably expect.)
5401 * minor incompatible change: *STANDARD-INPUT* is now only an
5402 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5404 * minor incompatible change: Y-OR-N-P is now character-oriented,
5405 not line oriented. Also, YES-OR-NO-P now works without errors.
5406 (thanks to Antonio Martinez)
5407 * sb-aclrepl module improvements: an integrated inspector, added
5408 repl features, and a bug fix to :trace command.
5409 * Known functions, which cannot be open coded by the backend, are
5410 considered to be able to check types of their arguments. (fixing
5411 a bug report by Nathan J. Froyd)
5412 * fixed a bug in computing method discriminating functions: It is
5413 now possible to define methods specialized on classes which have
5414 forward-referenced superclasses. (thanks to Gerd Moellmann)
5415 * fixed evaluation order in optional entries (reported by Gilbert
5417 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5418 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5419 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5420 required-by-AMOP NAME argument, as well as CLASS and
5421 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5422 * fixed bug 20: DEFMETHOD can define methods using names that are
5423 not the proper names of classes to designate class specializers.
5424 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5425 Unix file descriptors, instead of blowing up. (thanks to Antonio
5427 * Garbage collection refactoring: user-visible change is that a
5428 call to the GC function during WITHOUT-GCING will not do garbage
5429 collection until the end of the WITHOUT-GCING. If you were doing
5430 this you were probably losing anyway.
5431 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5432 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5433 TYPEP the latter but not the former.
5434 * The compiler issues a full WARNING for calls to undefined functions
5435 with names from the CL package.
5436 * MAP-INTO for a vector destination is open coded. (reported by
5437 Brian Downing on c.l.l)
5438 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5439 documentation string.
5440 * fixed some bugs revealed by Paul Dietz' test suite:
5441 ** COPY-ALIST now signals an error if its argument is a dotted
5443 ** Condition slots are now accessed more correctly in the presence
5444 of multiple initargs for a given slot.
5445 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5446 exclude restarts of the same name associated with a different
5448 ** DEFCLASS of forward-referenced classes with another
5449 forward-referenced class in the superclasses list no longer
5451 ** Condition slots are now initialized once each, not multiple
5452 times. (thanks to Gerd Moellmann)
5453 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5455 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5456 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5457 arguments contain duplicated elements.
5458 ** RESTART-CASE understands local macros.
5459 ** RESTART-CASE associates exactly its own restarts with a condition.
5460 ** ENDP in safe mode checks its argument to be of type LIST.
5461 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5462 in question is unbound.
5463 ** Optimized MAKE-INSTANCE functions no longer cause internal
5464 assertion failures in the presence of duplicate initargs.
5465 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5466 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5467 propagated even in the ctor optimized implementation of
5469 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5471 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5472 * a better implementation of SXHASH on (simple) bit vectors,
5473 measured both in execution speed and in distribution of results
5474 over the positive fixnums, has been installed. Likewise, a better
5475 implementation of EQUAL for simple bit vectors is now available.
5476 * fixed CEILING optimization for a divisor of form 2^k.
5477 * fixed bug 240 (emitting extra style warnings "using the lexical
5478 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5479 by Antonio Martinez)
5480 * fixed SXHASH, giving different results for NIL depending on type
5481 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
5482 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
5483 variable. (found by Rolf Wester)
5484 * SBCL does not ignore type declarations for special
5485 variables. (reported by rif on c.l.l 2003-03-05)
5486 * some bug fixes in contrib/sb-aclrepl/
5487 * fixed some bugs revealed by Paul Dietz' test suite:
5488 ** a bug in the CONS type specifier, whereby the CAR and CDR
5489 types got intertwined, has been fixed;
5490 ** the type system is now able to reason about the interaction
5491 between INTEGER and RATIO types more completely;
5492 ** APPEND, [N]REVERSE and NRECONC check that those their
5493 arguments, which must be proper lists, are really so;
5494 ** An array specialized to be unable to hold elements has been
5495 implemented, as required -- yes, really -- by ANSI;
5496 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5497 on malformed property lists;
5499 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5500 * incompatible packaging change: in line with Unix convention,
5501 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5502 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5503 * REQUIRE and PROVIDE are now optionally capable of doing something
5504 useful. See the documentation string for REQUIRE.
5505 * infrastructure for a managed SBCL contrib system: contributed
5506 modules in this release include:
5507 ** the ASDF system definition facility;
5508 ** an interface to the BSD Sockets API;
5509 ** an ACL-like convenience interface to the repl;
5510 (thanks to Kevin Rosenberg)
5511 ** an implementation of ROTATE-BYTE, with efficient implementation
5513 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5514 gives a closer approximation to the right answer than previously.
5515 (thanks to Raymond Toy)
5516 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5517 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5518 optional environment arguments, as required by ANSI.
5519 * fixed bugs in other functions taking environment objects, allowing
5520 calls with an explicit NIL environment argument to be compiled
5522 * fixed bug 228: primary return values from
5523 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5524 COMPILE or FUNCTION.
5525 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5526 :TYPE will no longer signal errors on innocuous objects.
5527 * fixed bug 231b: SETQ is better at respecting type declarations in
5528 the lexical environment.
5529 * fixed a bug in DEFCLASS: classes named by symbols with no or
5530 unprintable packages can now be defined.
5531 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5532 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5533 * fixed compiler failure related to checking types of functions.
5534 (reported by Robert E. Brown)
5535 * the compiler is now much more consistent in its error-checking
5536 treatment of bounding index arguments to sequence functions: in
5537 (SAFETY 3) code, errors will be signalled in almost all cases if
5538 invalid sequence bounding indices are passed to functions defined
5539 by ANSI to operate on sequences.
5540 * fixed a bug in the build procedure: documentation of SBCL-specific
5541 packages is now preserved and available in the final Lisp image.
5542 * lifted FDEFINITION lookup out of loops in the implementation of
5543 many list operations. (thanks to Robert E. Brown)
5544 * fixed a bug in the reader: the #n# reader macro now works for
5545 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5546 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5547 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5548 E. Brown and Tony Martinez respectively)
5549 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5550 SLOT-BOUNDP: in particular, it is now able to optimize them much
5551 better, and is now not vulnerable to having packages renamed.
5552 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5553 always called when a slot is not present in an instance. (thanks
5555 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5556 longer signal an error on unreading a character following EOF on
5557 the previous constituent stream. (thanks to Tony Martinez)
5558 * fixed some bugs revealed by Paul Dietz' test suite:
5559 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5560 not just nonnegative fixnums;
5561 ** the logical bit-array operators such as BIT-AND now accept an
5562 explicit NIL for their "opt-arg" argument (to indicate a
5563 freshly-consed result bit-array);
5564 ** ELT now signals an error on an invalid sequence index in safe
5566 ** the type system is now cleverer about negations of numeric
5567 types, and consequently understands the BIGNUM and RATIO types
5569 ** the type system is now cleverer about the interaction between
5570 INTEGER and RATIO types: while bugs still remain, many more
5571 cases are accurately computed;
5572 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5573 if it is in the last clause;
5574 ** CONSTANTLY now correctly returns a side-effect-free function in
5576 ** DECLARE is no longer treated as a special-operator; in
5577 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5578 * incremented fasl file version number due to the change in the
5579 DEFSTRUCT-SLOT-DESCRIPTION structure.
5581 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5582 * minor incompatible change: code processed by the "interpreter" or
5583 EVAL now has a compilation optimization policy of (DEBUG 2)
5584 (changed from (DEBUG 1)) to improve debuggability of interactive
5585 development, and to allow the use of the debug RETURN command in
5587 * an experimental implementation of the RETURN command for the
5588 debugger has been included. (thanks to Frederik Kuivinen)
5589 * fixed bug 62: constraints were not propagated into a loop.
5590 * fixed bug in embedded calls of SORT (reported and investigated by
5592 * fixed some bugs revealed by Paul Dietz' test suite:
5593 ** printing and reading of arrays with some dimensions having
5594 length 0 (thanks to Gerd Moellmann);
5595 ** BOA constructor with &AUX argument without a default value does
5596 not cause a type error;
5597 ** CONSTANTP now returns true for all self-evaluating objects.
5599 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5600 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5601 accessors that are related by inheritance, as specified in the
5602 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5603 Valtteri Vuorikoski)
5604 * The compiler is now able to inline functions that were defined in
5605 a complex lexical environment (e.g. inside a MACROLET).
5606 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5608 * Support for the upcoming FreeBSD-5.0 release has been included.
5609 (thanks to Dag-Erling Smorgrav)
5610 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5611 effect when it is not in a toplevel context.
5612 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5613 stand a better chance of being correct. (thanks to Gerd
5615 * fixed bug in COERCE, which now signals an error on coercing a
5616 rational to a bounded real type which excludes the expected
5618 * The compiler is now able to derive types more accurately from the
5619 COERCE and COMPILE functions.
5620 * fixed bug 223: functional binding is considered to be constant
5621 only for symbols in the CL package.
5622 * fixed bug 231: SETQ did not check the type of a variable being set
5623 (reported by Robert E. Brown)
5624 * A new optimization for MAKE-INSTANCE has been included, fixing
5625 various bugs (including relating to :ALLOCATION :CLASS slots and
5626 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5628 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5629 ** As required by ANSI, LOOP now disallows anonymous collection
5630 clauses such as COLLECT I in conjunction with aggregate boolean
5631 clauses such as THEREIS (= I 1);
5632 ** LOOP now signals an error when any variable is reused in the
5633 same loop (including the potentially useful construct analogous
5634 to WITH A = 1 WITH A = (1+ A);
5635 ** IT is only a special loop symbol within the first clause of a
5636 conditional loop clause;
5637 ** LOOP with a typed iteration variable over a hashtable now
5638 signals a type error iff it should.
5639 * fixed some other bugs revealed by Paul Dietz' test suite:
5640 ** FILE-STREAM now names the class previously known as FD-STREAM;
5641 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5642 argument) no longer signals an error;
5643 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5644 of the slot symbol, rather than using the current package
5645 ((:CONC-NAME "") continues to intern the slot's name in the
5647 * incremented fasl file version number, because of the incompatible
5648 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5649 of the new implementation of DEFINE-COMPILER-MACRO.
5651 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5652 * Support for building SBCL for MIPS platforms running in
5653 little-endian mode has now been checked in, and basic
5654 functionality on said platforms verified.
5655 * minor incompatible change: PCL now records the pathname of a file
5656 in which methods and the like are defined, rather than its
5658 * minor incompatible change: TRUENAME now considers the truename of
5659 a file naming a directory to be the pathname with :DIRECTORY
5660 component indicating that directory.
5661 * minor incompatible change: a NAMED clause in the extended form of
5662 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5663 reason for the previous behaviour is unclear.
5664 * more systematization and improvement of CLOS and MOP conformance
5665 in PCL (thanks to Gerd Moellman and Pierre Mai):
5666 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5668 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5669 primary methods with no specializers;
5670 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5672 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5673 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5674 FORWARD-REFERENCED-CLASSes; error reporting on
5675 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5677 ** SXHASH on CLOS instances now uses a slot internal to the
5678 instance to return different numbers on distinct instances,
5679 while preserving the same return value through invocations of
5681 ** DEFMETHOD signals errors when methods with longer incongruent
5682 lambda lists are added to generic functions;
5683 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5684 CLASS, as specified in AMOP;
5685 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5686 on the order returned by the primary method for classes of
5687 class STANDARD-CLASS;
5688 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5689 * fixed some bugs shown by Paul Dietz' test suite:
5690 ** DOLIST puts its body in TAGBODY;
5691 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5693 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5694 value producing form;
5695 ** if more variables are given to PROGV than values, extra
5696 variables are bound and made to have no value;
5697 ** NSUBSTITUTE on list arguments gets the right answer with
5699 ** ELT signals an error of type TYPE-ERROR when the index argument
5700 is not a valid sequence index;
5701 ** LOOP signals (at macroexpansion time) an error of type
5702 PROGRAM-ERROR when duplicate variable names are found;
5703 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5704 ** FUNCALL of special-operators now cause an error of type
5706 ** PSETQ now works as required in the presence of side-effecting
5707 symbol-macro places;
5708 ** NCONC accepts any object as its last argument;
5709 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5711 ** loop-for-as-package does not require a package to be explicitely
5713 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5715 * fixed bug 166: compiler preserves "there is a way to go"
5716 invariant when deleting code.
5717 * fixed bug 172: macro lambda lists with required arguments after
5718 &REST arguments now cause an error to be signalled. (thanks to
5720 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5721 bug. (thanks to Matthew Danish)
5722 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5724 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5725 arguments are lexically rebound. (thanks to Gerd Moellmann and
5727 * fixed bug 194: error messages are now more informative when there
5728 is no primary method applicable in a call to a generic
5729 function. (thanks to Gerd Moellmann)
5730 * fixed bug in command line argument checking (thanks to Julian
5732 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5733 (thanks to Matthew Danish)
5734 * incremented fasl file version number, because of the
5735 SXHASH-related changes in the layout of CLOS data structures
5737 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5738 * minor incompatible change: The runtime (the Unix executable named
5739 "sbcl") is now much pickier about the .core files it will load.
5740 Essentially it now requires .core files to descend from the same
5741 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5742 as the runtime does. (The intent is to prevent the crashes which
5743 can occur, and which can even be reported as mysterious failures,
5744 when people patch the sources or change the build parameters
5745 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5746 sbcl and .core files.)
5747 * fixed bug: VALUES-LIST is no longer optimized away.
5748 * fixed bug 142: The FFI conversion of C string values to Lisp
5749 string values no longer conses excessively. (thanks to Nathan
5750 Froyd porting Raymond Toy's fix to CMU CL)
5751 * began to systematize and improve MOP conformance in PCL (thanks to
5752 Nathan Froyd, Gerd Moellman and Pierre Mai):
5753 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5755 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5756 ** FINALIZE-INHERITANCE is now called on class finalization;
5757 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5758 argument precedence order.
5759 * fixed bug 202: The compiler no longer fails on functions whose
5760 derived types contradict their declared type.
5761 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5762 so it can be non-toplevel.
5763 * The fasl file version number has changed (because of the new
5764 implementation of DEFMACRO).
5765 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5766 safe code, that any length requirement by their type-specifier
5767 argument is valid. The exceptions to this are described in bug
5769 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5770 functions now check the types of their inputs as required by ANSI.
5771 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5772 introduced symbol is DECLAREd to be SPECIAL.
5773 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5774 * fixed bug: :COUNT argument to sequence functions may be negative
5775 * fixed bug: body of DO-SYMBOLS may contain declarations
5776 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5777 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5778 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5779 symbol macro only once
5780 * fixed printing of call frame when argument list is unavailable
5781 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5782 * compiler no longer signals WARNING on unknown keyword
5785 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5786 * A beta-quality port to the mips architecture running Linux,
5787 based on the old CMUCL backend, has been made. It has been tested
5788 on a big-endian kernel, and works sufficiently well to be able to
5789 rebuild itself; it has not been tested in little-endian mode.
5790 * fixed an inconsistency between gencgc.c and purify.c which made
5791 dumping/loading .core files unreliable
5792 * fixed bug 120a: The compiler now deals correctly with IFs where
5793 the consequent is the same as the alternative, instead of
5794 misderiving the return type. (thanks to Alexey Dejneka)
5795 * fixed bug 113: Logical pathnames are now dumpable (the logical
5796 host is resolved at load-time, throwing an error if it is not
5798 * fixed bug 174: FORMAT's error message is slightly clearer when a
5799 non-printing character is used in a format directive.
5800 * fixed several bugs in compiler checking of type declarations, i.e.
5801 violations of the Python "declarations are assertions" principle
5802 (thanks to Alexey Dejneka)
5803 * fixed several bugs in PCL's error checking (thanks to Gerd
5805 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5807 * fixed bug in compilation of functions as first class values
5808 (thanks to Antonio Martinez-Shotton)
5809 * The compiler's handling TYPE-ERRORs which it can prove will
5810 inevitably happen at runtime has been cleaned up and corrected
5811 in several ways. (thanks to Alexey Dejneka)
5812 * improved argument type checking for various basic arithmetic
5813 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5814 lavished on them in the past that they can be compiled in many
5815 ways in different special cases
5816 * fixed bug 181: compiler checks validity of user supplied type
5818 * cleaned up code flushing in optimization: Function calls which
5819 should signal errors for safety purposes (e.g. which ANSI says
5820 should signal errors when their arguments are of incorrect type)
5821 are no longer optimized away.
5822 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5823 * incremented fasl file version number, because changes in the
5824 implementation of sequence functions like COERCE caused
5825 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5826 in old inline expansions) to become undefined. (Actually these
5827 changes were later undone, so we might very well be binary
5828 compatible with 0.7.7 after all, but leaving the version number
5829 incremented seemed like the simplest and most conservative
5832 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5833 * An alpha-quality port to the parisc architecture running Linux,
5834 based on the old CMUCL backend, has been made. This, even more so
5835 than the other backends, should be considered still a work in
5836 progress; known problems include that the Linux kernel in 64-bit
5837 mode does not propagate the correct sigcontext structure to
5838 userspace, and consequently SBCL on a parisc64 kernel will not
5840 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5841 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5842 suppressed.) Also now that the compiler is looking at declarations
5843 in the environment, it checks optimization declarations as well,
5844 and suppresses inlining when (> DEBUG SPEED).
5845 * More fixes have been made to treatment of floating point exception
5846 treatment and other Unix signals. In particular, floating point
5847 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5848 * The detection and handling of control stack exhaustion (infinite
5849 or very deeply nested recursion) has changed. Stack exhaustion
5850 detection is now done by write-protecting pages at the OS level
5851 and applies at all optimization settings; when found, a
5852 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5853 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5854 be caught using IGNORE-ERRORS.
5855 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5856 correctly when transforming recursive LABELS functions to LETs.
5857 (thanks to Alexey Dejneka)
5858 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5859 that are names of constants or global variables.
5860 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5861 alien routines with docstrings.
5862 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5863 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5865 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5866 (thanks to Eric Marsden)
5867 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5868 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5869 * Bug fix: The SPARC backend can now compile functions involving
5870 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5871 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5872 to a functions expecting a PATHNAME-DESIGNATOR.
5873 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5874 lambda lists. (thanks to Alexey Dejneka)
5875 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5876 functions so that EXPORTing the name of the class doesn't cause
5877 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5878 to Antonio Martinez for reporting this)
5879 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5880 constant-folded without failing an assertion. (thanks to Einar
5881 Floystad Dorum for reporting this)
5882 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5883 types are now dealt with more correctly by the compiler.
5884 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5885 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5886 behaviour analogous to RENAME-FILE. This puts its behaviour more
5887 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5889 * The fasl file version number has changed again. (because of the
5890 bug fix involving the names of PCL MAKE-INSTANCE functions)
5892 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5893 * bug fix: Floating point exceptions are treated much more
5894 consistently on the x86/Linux and PPC/Linux platforms.
5895 * Array initialization with :INITIAL-ELEMENT is now much faster for
5896 cases when the compiler cannot open code the array creation, but
5897 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5898 array accesses have also seen a speed increase.
5899 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5900 specified. (This was at the root of some bad interactions between
5901 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5903 * bug fix: Internal error arguments for undefined functions are now
5904 computed correctly on the PPC/Linux platform.
5905 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5906 Raymond Toy's patch for CMU CL)
5907 * Support for the Solaris 9 operating environment has been included
5908 (thanks to Daniel Merritt)
5909 * A very ugly but hopefully complete draft of the missing FFI chapter
5910 of the manual has been created by reformatting the corresponding
5911 CMU CL manual chapter into (currently very ugly and incoherent)
5912 DocBook and bringing it up to date for SBCL behavior. Thus, the
5913 manual is now essentially complete, at least by my extreme
5914 once-and-only-once standards, whereby it's acceptable to refer to
5915 the doc strings of SB-EXT functions as the primary documentation.
5916 * The fasl file version number has changed again, due to cleanup of
5917 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5918 is no longer a static symbol.)
5920 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5921 * SBCL now builds with OpenMCL (version 0.12) as the
5922 cross-compilation host; also, more progress has been made toward
5923 bootstrapping under CLISP.
5924 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5926 * bug 158 fixed: The compiler can now deal with integer loop
5927 increments different from 1; fixing this turned out also to fix
5929 * bug 169 fixed: no more bogus warnings about using lexical bindings
5930 despite the presence of perfectly good SPECIAL declarations (thanks
5931 to David Lichteblau)
5932 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5933 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5934 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5936 * bug 180 fixed: Method combination specifications no longer ignore
5937 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5938 * bug fix: Structure type predicate functions now check their argument
5939 count as they should.
5940 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5941 correctly. (thanks to Pierre Mai)
5942 * minor incompatible change: The --noprogrammer option is deprecated
5943 in favor of the new --disable-debugger option, which is very similar.
5944 (The major difference is that it takes effect at a slightly different
5945 time at startup, causing handling of errors in --sysinit and
5946 --userinit files will be affected differently.) The
5947 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5948 been added to allow this functionality to be controlled from ordinary
5949 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5950 maintainers, who might want to run non-interactive scripts to
5951 build SBCL cores which will later be used interactively.)
5952 * minor incompatible change: The LOAD function no longer, when given
5953 a wild pathname to load, loads all files matching that pathname.
5954 Instead, an error of type FILE-ERROR is signalled.
5956 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5957 * bug 147 fixed: The compiler preserves its block link/count
5958 invariants more correctly now so that it doesn't crash. (thanks
5960 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5962 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5963 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5964 no-value-for-this-character as NIL (as specified by ANSI).
5965 * HOST-NAMESTRING on physical pathnames now returns a string that is
5966 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5967 (thanks to Christophe Rhodes)
5968 * The Alpha port handles icache flushing more correctly. (thanks to
5970 * More progress has been made toward bootstrapping under CLISP. (thanks
5971 to Christophe Rhodes)
5972 * The fasl file format has changed again, because dynamic loading
5973 on OpenBSD (which has non-ELF object files) motivated some cleanups
5974 in the way that foreign symbols are transformed and passed around.
5975 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5976 is no longer treated as whitespace by the reader, but instead as
5977 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5978 |A
\7fB|, instead of A as it used to.
5980 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5981 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5982 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5983 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5984 this as of 0.7.1.45, but was left out of the previous news section
5985 (thanks to Dan Barlow)
5986 * SBCL now runs on the Solaris operating system on SPARC architectures
5987 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5988 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5989 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5990 * SPARC backend cleanups, allowing builds of cores optimized for V8
5991 and V9 SPARCS, and also emission of code targeted to a particular
5992 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5994 * SBCL is closer to bootstrapping under CLISP, thanks to various
5995 fixes by Christophe Rhodes.
5996 * The fasl file format has changed again, to allow the compiler's
5997 INFO database to support symbol macros.
5998 * The user manual (in doc/) is formatted into HTML more nicely.
5999 (thanks to coreythomas)
6000 * The system is smarter about SUBTYPEP relationships, especially
6001 those involving NOT types (including types such as ATOM which are
6002 represented internally using NOT types). Thus SUBTYPEP is less
6003 likely to return (VALUES NIL NIL) in general, and in particular
6004 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
6006 * The fasl file format has changed again, because the internal
6007 representation of types now includes a new slot to support the new
6008 SUBTYPEP-of-NOT-types logic.
6009 * (not a change in the main branch of SBCL, but a related prototype
6010 which can hopefully be merged into the main branch of SBCL in the
6011 future:) Brian Spilsbury has produced a Unicode-enabled variant of
6012 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
6013 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
6014 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
6015 dispatch macro character combinations. (thanks to Alexey Dejneka)
6016 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
6017 that superficially look like logical namestrings correctly.
6018 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
6020 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
6021 default supplied-p) for &optional and &key arguments. (thanks to
6024 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
6025 * incompatible change: The compiler is now less aggressive about
6026 tail call optimization, doing it only when (> SPACE DEBUG) or
6027 (> SPEED DEBUG). (This is an incompatible change because there are
6028 programs which relied on the old CMU-CL-style behavior to optimize
6029 away their unbounded recursion which will now die of stack overflow.)
6030 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
6031 for non-GENCGC systems has been increased to 20M (since that
6032 seems much closer to the likely performance optimum for modern
6033 systems than the old 4M value was)
6034 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
6035 and *DEBUG-PRINT-LEVEL*
6036 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
6037 of CMU CL's support for SPARC, and various endianness and other
6038 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
6039 * new syntactic sugar for the Unix command line: --load foo.bar is now
6040 an alternate notation for --eval '(load "foo.bar")'.
6042 ** The system now detects stack overflow and handles it gracefully,
6043 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
6044 optimization settings. (This is a good thing in general, and
6045 its introduction in this version should be particularly timely
6046 for anyone whose code fails because of suppression of tail
6048 ** The system now hunts for the C variable "environ" in a more
6049 devious way, to avoid segfaults when the C library version differs
6050 between compile time and run time. (thanks to Christophe Rhodes)
6051 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
6052 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
6053 ** The compiler no longer issues bogus style warnings for undefined
6054 classes in the same source file as the DEFCLASSes which defined
6055 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
6057 ** fixes in CONDITION class precedence list for undefined function
6058 errors (thanks to Alexei Dejneka)
6059 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
6060 correctly. (thanks to Dan Barlow)
6061 ** portability fixes aiming at bootstrapping under CLISP (thanks
6062 to Dave McDonald and Christophe Rhodes)
6063 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
6064 ** fixes in type translation and and type inference (thanks to
6066 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
6067 ** various fixes in the new ports (thanks to Dan Barlow)
6068 * several changes related to debugging:
6069 ** suppression of tail recursion, as noted above
6070 ** stack overflow detection, as noted above
6071 ** The default implementation of TRACE has changed. :ENCAPSULATE T
6072 is now the default. (For some time encapsulation has been more
6073 reliable than the breakpoint-based :ENCAPSULATE NIL
6074 implementation, at least on X86 systems; and I just noticed that
6075 encapsulation also seems closer to the spirit of the ANSI
6078 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
6080 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
6081 up properly again. (There was a packaging bug in 0.7.0 which
6082 left their definitions in SB-SYS::LOAD-FOREIGN and
6083 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
6084 vital for most things which interface to C-level interfaces,
6085 like extensions working with sockets or databases or
6086 Perl-compatible regexes or whatever, and the need to fix
6087 this bug is the main reason that 0.7.1 was released so
6089 ** DEFGENERIC is now choosier about the methods it redefines, so that
6090 reLOADing a previously-LOADed file containing DEFGENERICs does
6091 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
6092 cycle now works as it should. (thanks to Alexey Dejneka)
6093 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
6094 fixed by Christophe Rhodes. (He actually submitted this patch
6095 months ago, and I delayed until after 0.7.0.)
6096 ** Bug 111 (internal compiler confusion about runtime checks on
6097 FUNCTION types) was fixed by Alexey Dejneka.
6098 * Some internal cleanups (getting rid of variables which aren't
6099 needed now that the byte interpreter is gone) caused the fasl
6100 file format number to change again.
6102 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
6103 * major incompatible change: The default fasl file extension, i.e. the
6104 default extension for files produced by COMPILE-FILE, has changed
6105 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
6107 ** There are many changes in the implementation of the compiler.
6108 SBCL is now essentially a compiler-only implementation of ANSI
6109 Common Lisp. EVAL still "interprets" a few special cases, but
6110 almost all the interesting cases are handled by creating
6111 a LAMBDA expression, calling COMPILE on it, then calling
6112 FUNCALL on the result.
6113 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
6114 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
6115 Since the code is newer, there might still be some new bugs
6116 (though not as many as before Martin Atzmueller's fixes:-). But
6117 the new code is substantially simpler and clearer, and hopefully
6118 any remaining bugs will be simpler, less fundamental, and more
6119 fixable then the bugs in the old code.
6120 ** The revised compiler is still a little unsteady on its feet.
6122 *** The debugging information it produces (particularly the names
6123 of FUNCTION objects) is sometimes much less useful than what
6124 the old compiler produced.
6125 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
6126 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
6127 within a MACROLET) has been temporarily weakened.
6128 ** There are new compiler optimizations for various functions:
6129 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
6130 FIND-IF-NOT, POSITION-IF-NOT, and FILL
6131 *** the math functions TRUNCATE, FLOOR, and CEILING
6132 *** the function-of-all-trades COERCE
6133 Mostly these should be transparent, but there's one
6134 potentially-annoying problem (bug 117): when the compiler
6135 inline-expands a function and does type analysis on the result,
6136 it can create control paths which have type mismatches, and
6137 when it can't prove that those control paths aren't taken,
6138 it will issue WARNINGs about the type mismatches. This is
6139 a particular problem in practice for the new sequence functions.
6140 It's not clear how this should be fixed, and for now, a
6141 workaround is given in the entry for 117 in the BUGS file.
6142 ** (Because of the interaction between the two previous items --
6143 occasional inlining problems and new inline expansions -- some
6144 of the new sequence function optimizations won't really kick in
6145 completely until debugging information, and then inlining, are
6146 straightened out in some future version.)
6147 * minor incompatible changes:
6148 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
6149 DIRECTORY no longer implicitly promotes NIL slots of its
6150 pathname argument to :WILD. In particular, when you ask for the
6151 contents of a directory (which you used to be able to do without
6152 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
6153 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
6154 ** changes in behavior that ANSI explicitly defines to be
6155 implementation dependent:
6156 *** The new compiler-only implementation still conforms with ANSI,
6157 but acts a little different than before. Besides the obvious
6158 changes in performance tradeoffs (that the cost per form passed
6159 to EVAL has gone up, and the cost per form executed by EVAL
6160 has gone down), the behavior of the system changes a little
6161 because there are no longer any interpreted function objects.
6162 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
6163 e.g. doing COMPILE on the output of interactive DEFUN is
6165 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
6167 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
6168 has changed from (:CL) to NIL.
6169 *** The CHAR-NAME of unprintable ASCII characters which, unlike
6170 e.g. #\Newline and #\Tab, don't have names specified in the
6171 ANSI Common Lisp standard, is now based on their ASCII symbolic
6172 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
6173 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
6174 are no longer used for output.
6175 ** changes in internal implementation constants:
6176 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
6177 4 million. (If your application spends a lot of time GCing and
6178 you have a lot of RAM, you might want to experiment with
6179 increasing it even more.)
6180 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
6181 However, almost all old code should still continue to work without
6182 immediate update, as SB-C-CALL is now a (deprecated) nickname
6184 ** Old operator names in the style DEF-FOO are now deprecated in
6185 favor of new corresponding names DEFINE-FOO, for consistency with
6186 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
6187 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
6188 internal symbols, but a few supported extensions like
6189 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
6190 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
6191 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
6192 etc. as you get deeper into recursive calls to the debugger
6193 command loop, instead of the old "5]", "5]]", "5]]]"
6194 sequence. (I was motivated to do this when squabbles between
6195 ILISP and SBCL left me very deeply nested in the debugger. In the
6196 short term, this change will probably provoke more ILISP/SBCL
6197 squabbles, but hopefully it will be an improvement in the long run.)
6198 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
6199 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
6200 function, since declaiming return types involving aliens is
6201 (1) annoyingly messy to do by hand and (2) vital to efficient
6202 compilation of code which calls such functions.
6203 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
6204 longer reexported by the SB-EXT package. They're solely useful
6205 for alien code, so it seems more logical that you should get
6206 them from the SB-ALIEN package, not in SB-EXT.
6207 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
6208 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
6209 features. Instead, the code that they used to control is always
6210 built into the system.
6211 * many other bug fixes
6212 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
6213 advantage of the new EVAL-WHEN stuff and to clean them up in
6214 general, and they are now more ANSI-compliant in a number of
6215 ways. Martin Atzmueller is responsible for a lot of this.
6216 ** Besides the cleanups discussed above, Martin Atzmueller fixed
6218 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
6219 *** correct ERROR type for various file operations
6220 *** some fixes for Lisp streams
6221 *** DEFMETHOD syntax checking
6222 *** changing old weird representation of debug information as
6223 strings (which, among their other deficiencies, don't transform
6224 correctly when you rename packages, and don't change their
6225 print representation when you change things like *PACKAGE*
6226 and *PRINT-LENGTH*) to symbols and lists of symbols
6227 He also made several improvements and fixed several bugs in DESCRIBE.
6228 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6230 *** misbehavior of WRITE-STRING/WRITE-LINE
6231 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6232 and several other LOOP problems as well
6233 *** DIRECTORY when similar filenames are present
6234 *** DEFGENERIC with :METHOD options
6235 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6236 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6237 *** argument ordering in FIND with :TEST option
6238 *** mishandled package designator argument in APROPOS-LIST
6239 *** various problems in the backquote readmacro
6240 *** a bug in APROPOS
6241 *** probably some others that I'm not describing very well here,
6242 since the CVS log documents them by reference to sbcl-devel
6243 messages, and the SourceForge archives aren't working well.:-(
6244 ** Dan Barlow improved the Alpha port (and is making progress on the
6245 PPC port, for those of you who think different).
6246 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6247 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6248 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6249 continues to work on the SPARC port (for those of you in a position
6250 to look down upon our little PC-compatible boxes from a great height).
6251 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6252 and uses that copy, rather than the current dynamic value, when
6253 it's trying to decide whether to truncate output. Thus e.g.
6254 (let ((*print-lines* 50))
6255 (pprint-logical-block (stream nil)
6257 (let ((*print-lines* 8))
6258 (print (aref possiblybigthings i) stream)))))
6259 should now truncate the logical block only at 50 lines, instead of
6260 often truncating it at 8 lines, as it did before.
6261 * The doc/cmucl/ directory, containing old CMU CL documentation
6262 from the time of the fork, is no longer part of the base system.
6263 SourceForge has shut down its anonymous FTP service, and with it
6264 my original plan for distributing the old CMU CL documentation
6265 there. For now, if you need these files you can download an old
6266 SBCL source release and extract them from it.
6267 * The fasl file version number changed again, for dozens of reasons,
6268 some of which are apparent above.
6270 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6271 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6272 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6273 patch, so that DISASSEMBLE output is much nicer.
6274 * The code in the SB-PROFILE package now seems reasonably stable.
6275 I still haven't decided what the final interface should look like
6276 (I'd like PROFILE to interact cleanly with TRACE, since both
6277 facilities use function encapsulation) but if you have a need
6278 for profiling now, you can probably use it successfully with
6279 the current CMU-CL-style interface.
6280 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6281 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6282 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6283 link now returns the dangling link itself, and for similar
6284 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6285 link itself. (In these cases the old code signalled an error and
6286 looped endlessly, respectively.) Thus, DIRECTORY now works even
6287 in the presence of dangling and cyclic symbolic links.
6288 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6289 is now a supported extension again, since the consensus on
6290 sbcl-devel was that it can be useful for ordinary development
6291 work, not just for debugging SBCL itself.
6292 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6293 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6294 that currently-defined functions might be redefined later with
6295 different return types.
6296 * Hash tables can be printed readably, as inspired by CMU CL code
6297 of Eric Marsden and SBCL code of Martin Atzmueller.
6298 * better error handling in CLOS method combination, thanks to
6299 Martin Atzmueller porting Pierre Mai's CMU CL patches
6300 * more overflow fixes for >16Mbyte I/O buffers
6301 * A bug in READ has been fixed, so that now a single Ctrl-D
6302 character suffices to cause end-of-file on character streams.
6303 In particular, now you only need one Ctrl-D at the command
6304 line (not two) to exit SBCL.
6305 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6307 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6308 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6309 does the right thing.
6310 * The implementation of some type tests, especially for CONDITION
6311 types, is now tidier and maybe faster, due to CMU CL code
6312 originally by Douglas Crosher, ported by Martin Atzmueller.
6313 * Some math functions have been fixed, and there are new
6314 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6315 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6316 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6317 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6318 likely to be built into sbcl-0.7.0.)
6319 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6320 CL, ported to SBCL by Martin Atzmueller)
6321 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6322 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6323 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6324 * There's a new slam.sh hack to shorten the edit/compile/debug
6325 cycle for low-level changes to SBCL itself, and a new
6326 :SB-AFTER-XC-CORE target feature to control the generation of
6327 the after-xc.core file needed by slam.sh.
6328 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6329 COMPILE-FILE is no longer supported, so that now every function
6330 gets an entry point, so that block compilation looks a little
6331 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6332 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6333 returns the number of bytes consed since the system started,
6334 rather than the number consed since the first time the function
6335 was called. (The new definition parallels ANSI functions like
6336 CL:GET-INTERNAL-RUN-TIME.)
6337 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6338 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6339 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6340 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6341 * Fasl file version numbers are now independent of the target CPU,
6342 since historically most system changes which required version
6343 number changes have affected all CPUs equally. Similarly,
6344 the byte fasl file version is now equal to the ordinary
6347 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6348 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6349 is no longer recognized. I apologize for this, because it was
6350 listed in SB-EXT as a supported extension, but I found that
6351 its existing behavior was poorly specified, as well as incorrectly
6352 specified, and it looked like too much of a mess to straighten it
6353 out. I have enough on my hands trying to get ANSI stuff to work..
6354 * many patches ported from CMU CL by Martin Atzmueller, with
6355 half a dozen bug fixes in pretty-printing and the debugger, and
6356 half a dozen others elsewhere
6357 * fixed bug 13: Floating point infinities are now supported again.
6358 They might still be a little bit flaky, but thanks to bug reports
6359 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6360 as flaky as they were.
6361 * The --noprogrammer command line option is now supported. (Its
6362 behavior is slightly different in detail from what the old man
6363 page claimed it would do, but it's still appropriate under the
6364 same circumstances that the man page talks about.)
6365 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6366 are now supported, and enabled by default. Thus, the compiler can
6367 handle many floating point and complex operations much less
6368 inefficiently. (Thus e.g. you can implement a complex FFT
6370 * The compiler now detects type mismatches between DECLAIM FTYPE
6371 and DEFUN better, and implements CHECK-TYPE more correctly, and
6372 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6373 thanks to patches from Martin Atzmueller.
6374 * various fixes to make the cross-compiler more portable to
6375 ANSI-conforming-but-different cross-compilation hosts (notably
6376 Lispworks for Windows, following bug reports from Arthur Lemmens)
6377 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6378 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6379 fixed thanks to Pierre Mai's CMU CL patches.
6380 * fixes to keep the system from overflowing internal counters when
6381 it tries to use i/o buffers larger than 16M bytes
6382 * fixed bug 45a: Various internal functions required to support
6383 complex special functions have been merged from CMU CL sources.
6384 (When I was first setting up SBCL, I misunderstood a compile-time
6385 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6386 * improved support for type intersection and union, fixing bug 12
6387 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6388 more obscure bugs as well
6389 * some steps toward byte-compiling non-performance-critical
6390 parts of the system, courtesy of patches from Martin Atzmueller
6391 * Christophe Rhodes has made some debian packages of sbcl at
6392 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6393 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6394 stable, but are nonetheless usable. When he's ready, I'd be happy
6395 to add them to the SourceForge "File Releases" section. (And if
6396 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6397 * new fasl file format version number (because of changes in
6398 internal representation of (OR ..) types to accommodate the new
6399 support for (AND ..) types, among other things)
6401 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6402 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6404 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6406 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6407 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6408 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6409 * DESCRIBE now works on structure objects again.
6410 * Most function call argument type mismatches are now handled as
6411 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6412 know whether the function will be redefined before the call is
6413 executed. (The compiler could flag local calls with full WARNINGs,
6414 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6415 it doesn't keep track of enough information to know whether calls
6416 are local in this sense.)
6417 * Compiler output is now more verbose, with messages truncated
6418 later than before. (There should be some supported way for users
6419 to override the default verbosity, but I haven't decided how to
6420 provide it yet, so this behavior is still controlled by the internal
6421 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6422 src/compiler/ir1util.lisp.)
6423 * Fasl file format version numbers have increased again, because
6424 support for the Gray streams extension changes the layout of the
6425 system's STREAM objects.
6426 * The Gray subclassable streams extension now works, thanks to a
6427 patch from Martin Atzmueller.
6428 * The full LOAD-FOREIGN extension (not just the primitive
6429 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6430 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6431 but like most other programs, it defaults to copying the Unix
6432 environment from the original process instead of starting the
6433 new process in an empty environment.
6434 * Extensions which manipulate the Unix environment now support
6435 an :ENVIRONMENT keyword option which doesn't smash case or
6436 do other bad things. The CMU-CL-style :ENV option is retained
6437 for porting convenience.
6438 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6439 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6441 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6443 * A patch from Martin Atzmueller seems to have solved the SIGINT
6444 problem, and as far as we know, signal-handling now works cleanly.
6445 (If you find any new bugs, please report them!)
6446 * The system no longer defaults Lisp source file names to types
6447 ".l", ".cl", or ".lsp", but only to ".lisp".
6448 * The compiler no longer uses special default file extensions for
6449 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6450 seems to expect a single default extension for all compiled code,
6451 and there's no compelling reason to try to stretch the standard
6452 to allow two different extensions.) Instead, byte-compiled files
6453 default to the same extension as native-compiled files.
6454 * Fasl file format version numbers have increased again, because
6455 a rearrangement of internal implementation packages made some
6456 dumped symbols in old fasl files unreadable in new cores.
6457 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6458 many fewer weird special cases.
6459 * Bug #17 (differing COMPILE-FILE behavior between logical and
6460 physical pathnames) has been fixed, and some related misbehavior too,
6461 thanks to a patch from Martin Atzmueller.
6462 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6463 by Tim Moore, ported to SBCL by Martin Atzmueller.
6464 * Martin Atzmueller fixed several filesystem-related problems,
6465 including bug #36, in part by porting CMU CL patches, which were
6466 written in part by Paul Werkowski.
6467 * More compiler warnings in src/runtime/ are gone, thanks to
6468 more patches from Martin Atzmueller.
6469 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6472 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6474 * DESCRIBE now works on CONDITION objects.
6475 * The debugger now handles errors which arise when trying to print
6476 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6478 * The build system now uses an additional file, customize-target-features.lisp,
6479 to allow local modifications to the target *FEATURES* list. (The point of
6480 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6481 debugging features enabled, without having to worry about propagating it
6482 into everyone's system when I do a "cvs update".) When no
6483 customize-target-features.lisp file exists, the target *FEATURES* list
6484 should be constructed the same way as before.
6485 * fixed bugs in DEFCONSTANT ANSI-compatibility:
6486 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
6487 warn about behavior which is undefined under the ANSI spec. Note: This
6488 is specified by ANSI, but it's not very popular with programmers.
6489 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
6490 macro in the SBCL sources for an example of a workaround which you
6491 might use to make portable ANSI-standard code which does what you want.
6492 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
6493 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
6494 when it's used as a non-toplevel form. (This is required in order
6495 to implement the DEFCONSTANT-EQX macro.)
6496 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6497 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6498 funny things, due to bugs in the implementation of EVAL-WHEN
6499 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6500 non-toplevel DEFCONSTANTs are uncommon.)
6501 * The core file version number and fasl file version number have been
6502 incremented, because the old noncompliant DEFCONSTANT behavior involved
6503 calling functions which no longer exist, and because I also took the
6504 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6505 * fixed bug 1 (error handling before read-eval-print loop starts), and
6506 redid debugger restarts and related debugger commands somewhat while
6508 ** The QUIT debugger command is gone, since it did something
6509 rather different than the SB-EXT:QUIT command, and since it never
6510 worked properly outside the main toplevel read/eval/print loop.
6511 Invoking the new TOPLEVEL restart provides the same functionality.
6512 ** The GO debugger command is also gone, since you can just invoke
6513 the CONTINUE restart directly instead.
6514 ** The TOP debugger command is also gone, since it's redundant with the
6515 FRAME 0 command, and since it interfered with abbreviations for the
6517 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6519 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6520 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6521 some porting work by Martin Atzmueller)
6522 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6523 with a boatload of patches which he ported to SBCL. Now that those
6525 ** The system tries to make sure that its low-priority messages
6526 are prefixed by semicolons, to help people who like to use
6527 syntax highlighting in their ILISP buffer. (This patch
6528 was originally due to Raymond Toy.)
6529 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6530 patches originally written by Raymond Toy.
6531 ** The compiler understands coercion between single-value and
6532 multiple-VALUES type expressions better, getting rid of some very
6533 weird behavior, thanks to patches originally by Robert MacLachlan
6534 and Douglas Crosher.
6535 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6536 lambda lists, thanks to a patch originally by Pierre Mai.
6537 ** The system no longer bogusly warns about "abbreviated type
6539 ** The compiler gets less confused by inlining and RETURN-FROM,
6540 thanks to some patches originally by Tim Moore.
6541 ** The system no longer hangs when dumping circular lists to fasl
6542 files, thanks to a patch originally from Douglas Crosher.
6543 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6544 undefined function error.
6545 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6546 in structure slot initforms) for now, documented workaround instead:-|
6547 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6548 * fixed bug 5: added stubs for various Gray stream functions called
6549 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6550 installed, at least appropriate type errors are generated
6551 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6552 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6553 consistently in DEFMETHOD forms.
6554 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6555 it doesn't seem to affect SBCL after all
6556 * The C runtime system now builds with better optimization and many
6557 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6559 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6561 * The system is now under CVS at SourceForge (instead of the
6562 CVS repository on my home machine).
6563 * The new signal handling code has been tweaked to treat register
6564 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6565 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6566 downstream, e.g. in debug-int.lisp, has implicit dependencies
6567 on the unsignedness of integer representation of machine words,
6568 and that caused the system to bomb out with infinite regress
6569 when trying to recover from type errors involving signed values,
6570 e.g. (BUTLAST '(1 2 3) -1).)
6571 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6572 (This was one of the bugs Peter Van Eynde reported back in July.)
6573 * The system now uses code inspired by Colin Walters' O(N)
6574 implementation of MAP (from the cmucl-imp@cons.org mailing
6575 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6576 inline the MAP operation, and there is more than one
6577 sequence argument to the MAP call (so that it can't just
6578 do ETYPECASE once and for all based on the type of the
6579 single sequence argument). (The old non-inline implementation
6580 of the general M-argument sequence-of-length-N case required
6581 O(M*N*N) time when any of the sequence arguments were LISTs.)
6582 * The QUIT :UNIX-CODE keyword argument has been renamed to
6583 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6584 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6586 * Raymond Wiker's patches to port dynamic loading from Linux to
6587 FreeBSD have been added.
6588 * The BUGS file is now more nearly up to date, thanks in large part
6589 to Martin Atzmueller's review of it.
6590 * The debugger now flushes standard output streams before it begins
6591 its output ("debugger invoked" and so forth).
6592 * The core version number and fasl file version number have both
6593 been incremented, because of incompatible changes in the layout
6595 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6596 used to not be called for a saved Lisp image.)
6597 * Martin Atzmueller's version of a patch to fix a compiler crash,
6598 as posted on sbcl-devel 13 September 2000, has been installed.
6599 * Instead of installing Martin Atzmueller's patch for the
6600 compiler transform for SUBSEQ, I deleted the compiler transform,
6601 and transforms for some similar consing operations.
6602 * A bug in signal handling which kept TRACE from working on OpenBSD
6604 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6605 away by constant folding
6606 * The system now defines its address space constants in one place
6607 (in the Lisp sources), and propagates them automatically elsewhere
6608 (through GENESIS and the sbcl.h file). Therefore, patching the
6609 address map is less unnecessarily tedious and error-prone. The
6610 Lisp names of address space constants have also been systematized.
6611 * CVS tags like dollar-Header-dollar have been removed from
6612 the sources, because they have never saved me trouble and
6613 they've been source of trouble working with patches and other
6614 diff-related operations.
6615 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6616 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6618 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6620 * The system has been ported to OpenBSD.
6621 * The system now compiles with a simple "sh make.sh" on the systems
6622 that it's supported on. I.e., now you no longer need to tweak
6623 text in the target-features.lisp-expr and symlinks in src/runtime/
6624 by hand, the make.sh takes care of it for you.
6625 * The system is no longer so grossly inefficient when compiling code
6626 involving vectors implemented as general (not simple) vectors (VECTOR T),
6627 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6628 which dares to use the various sequence functions on non-simple
6629 vectors, takes less of a performance hit.
6630 * There is now a primitive type predicate VECTOR-T-P
6631 to test for the (VECTOR T) type, so that e.g.
6632 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6633 can now be compiled with some semblance of efficiency. (The old code
6634 turned the type declaration into a full call to %TYPEP at runtime!)
6635 * AREF on (VECTOR T) is still not fast, since it's still compiled
6636 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6637 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6638 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6639 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6640 without making full calls to SUBTYPEP at runtime.
6641 (Some analogous efficiency issues for non-simple vectors specialized to
6642 element types other than T, or for non-simple multidimensional arrays,
6643 have not been addressed. They could almost certainly be handled the
6644 same way if anyone is motivated to do so.)
6645 * The changes in array handling break binary compatibility, so
6646 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6647 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6648 instead of (VALUES T T).
6649 * By following the instructions that Dan Barlow posted to sbcl-devel
6650 on 2 July 2000, I was able to enable primitive dynamic object
6651 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6652 functionality is not implemented (since it calls ld to resolve
6653 library references automatically, requiring RUN-PROGRAM for its
6654 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6655 try to resolve library references) is now supported.
6656 * The system now flushes the standard output streams when it terminates,
6657 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6658 them at several other probably-convenient times, e.g. in each pass of
6659 the toplevel read-eval-print loop, and after evaluating a form given
6660 as an "--eval" command-line option. (These changes were motivated by a
6661 discussion of stream flushing issues on cmucl-imp in August 2000.)
6662 * The source transform for TYPEP of array types no longer assumes
6663 that an array whose element type is a not-yet-defined type
6664 is implemented as an array of T, but instead punts, so that the
6665 type will be interpreted at runtime.
6666 * There is now some support for cross-compiling in make.sh: each of
6667 the phases of make.sh has its own script. (This should be transparent
6668 to people doing ordinary, non-cross-compile builds.)
6669 * Since my laptop doesn't have hundreds of megabytes of memory like
6670 my desktop machine, I became more motivated to do some items on
6671 my to-do list in order to reduce the size of the system a little:
6672 ** Arrange for various needed-only-at-cold-init things to be
6673 uninterned after cold init. To support this, those things have
6674 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6675 symbols with such names are now uninterned after cold init).
6676 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6677 fasl files for cold load.
6678 ** Remove the old compiler structure pooling code (which used to
6679 be conditional on the target feature :SB-ALLOC) completely.
6680 ** Redo the representation of some data in cold init to be more compact.
6681 (I also looked into supporting byte compiled code at bootstrap time,
6682 which would probably reduce the size of the system a lot, but that
6683 looked too complicated, so I punted for now.)
6684 * The maximum signal nesting depth in the src/runtime/ support code has
6685 been reduced from 4096 to 256. (I don't know any reason for the very
6686 large old value. If the new smaller value turns out to break something,
6687 I'll probably just bump it back up.)
6688 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6690 * Many, many bugs reported by Peter Van Eynde have been added to
6691 the BUGS list; some have even been fixed.
6692 * While enabling dynamic object file loading, I tried to make the
6693 code easier to understand, renaming various functions and variables
6694 with less ambiguous names, and changing some function calling
6695 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6696 * While trying to figure out how to do the OpenBSD port, I tried to
6697 clean up some of the code in src/runtime/. In particular, I dropped
6698 support for non-POSIX signal handling, added various comments,
6699 tweaked the code to reduce the number of compilation warnings, and
6700 renamed some files to increase consistency.
6701 * To support the new automatic configuration functionality in make.sh,
6702 the source file target-features.lisp-expr has been replaced with the
6703 source file base-target-features.lisp-expr and the machine-generated
6704 file local-target-features.lisp-expr.
6705 * fixed a stupid quoting error in make.sh so that using CMU CL
6706 "lisp -batch" as cross-compilation host works again
6708 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6710 * DESCRIBE no longer tries to call itself recursively to describe
6711 bound/fbound values, so that it no longer fails on symbols which are
6712 bound to themselves (like keywords, T, and NIL).
6713 * DESCRIBE now works on generic functions.
6714 * The printer now prints less-screwed-up representations of closures
6715 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6716 * A private symbol is used instead of the :EMPTY keyword previously
6717 used to mark empty slots in hash tables. Thus
6718 (DEFVAR *HT* (MAKE-HASH-TABLE))
6719 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6720 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6721 now does what ANSI says that it should. (You can still get
6722 similar noncompliant behavior if bang on the hash table
6723 implementation with all the symbols you get back from
6724 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6725 This breaks binary compatibility, since tests for equality to
6726 :EMPTY are wired into things like the macroexpansion of
6727 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6729 * There's now a minimal placeholder implementation for CL:STEP,
6730 as required by ANSI.
6731 * An obscure bug in the interaction of the normal compiler, the byte
6732 compiler, inlining, and structure predicates has been patched
6733 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6734 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6736 * Missing ordinary arguments in a macro call are now detected even
6737 when the macro lambda list contains &KEY or &REST.
6738 * The debugger no longer complains about encountering the top of the
6739 stack when you type "FRAME 0" to explicitly instruct it to go to
6740 the top of the stack. And it now prints the frame you request even
6741 if it's the current frame (instead of saying "You are here.").
6742 * As specified by ANSI, the system now always prints keywords
6743 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6745 * The default initial SIZE of HASH-TABLEs is now smaller.
6746 * Type information from CLOS class dispatch is now propagated
6747 into DEFMETHOD bodies, so that e.g.
6748 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6750 is now basically equivalent to
6751 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6752 (DECLARE (TYPE SINGLE-FLOAT X))
6754 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6755 operation, without having to do run-time type dispatch.
6756 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6757 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6758 * Since I don't seem to be making big file reorganizations very often
6759 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6760 is overflowing my ability to conveniently back them up), I've finally
6761 checked the system into CVS. (The CVS repository is on my home system,
6762 not at SourceForge -- putting it on SourceForge might come later.)
6763 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6764 high-level GC-NOTIFY-FOO functions send their output. (There's
6765 still very little control of where low-level verbose GC functions
6766 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6767 less than it used to -- the GC-NOTIFY-FOO functions are now under
6768 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6769 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6770 in only one place in the source code, and propagates it automatically
6771 everywhere that it's needed. Thus e.g. when I bump the version from
6772 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6773 * The C source files now include boilerplate legalese and documentation
6774 at the head of each file (just as the Lisp source files already did).
6775 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6776 to his page will be replaced with a link to his new CLiki service.
6778 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6780 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6781 * The build process now looks for GNU make under the default name "gmake",
6782 instead of "make" as it used to. If GNU make is not available as "gmake"
6783 on your system, you can change this default behavior by setting the
6784 GNUMAKE environment variable.
6785 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6786 can build without error under CMU CL.
6788 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6790 * There is now a partial SBCL user manual (with some new text and some
6791 text cribbed from the CMU CL manual).
6792 * The beginnings of a profiler have been added (starting with the
6793 CMU CL profiler and simplifying and cleaning up). Eventually the
6794 main interface should be through the TRACE macro, but for now,
6795 it's still accessed through vaguely CMU-CL-style functions and macros
6796 exported from the package SB-PROFILE.
6797 * Some problems left over from porting CMU CL to the new
6798 cross-compilation bootstrap process have been cleaned up:
6799 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6800 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6801 part when getting rid of the compiler *BACKEND* stuff.)
6802 ** The value of *NULL-TYPE* was screwed up, because it was
6803 being initialized before the type system knew the final
6804 definition of the 'NULL type. This screwed up several key
6805 optimizations in the compiler, causing inefficiency in all sorts
6806 of places. (I found it because I wanted to understand why
6807 GET-INTERNAL-RUN-TIME was consing.)
6808 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6809 PROCLAIM FTYPE information. Unfortunately this broke binary
6810 compatibility again, since now the forms output by DEFGENERIC
6811 to refer to functions which didn't exist in 0.6.3.
6812 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6813 can use the new (as of 0.6.3) transform for SOME into MAP into
6815 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6816 values to (INTEGER 0 1000000), so that the time code will no longer
6817 occasionally get blown up by Linux returning 1000000 microseconds
6818 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6819 its output conform to the ANSI spec. (Alas, this makes its output
6820 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6821 * A full call to MAP NIL with a single sequence argument no longer conses.
6822 * fixes to problems pointed out by Martin Atzmueller:
6823 * The manual page no longer talks about multiprocessing as though
6824 it were currently supported.
6825 * The ILISP support patches have been removed from the distribution,
6826 because as of version 5.10.1, ILISP now supports SBCL without us
6827 having to maintain patches.
6828 * added a modified version of Raymond Toy's recent CMU CL patch for
6829 EQUALP comparison of HASH-TABLE
6831 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6833 * The system still can't cross-compile itself with
6834 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6835 entails), but at least it can compile more of itself that way
6836 than it used to be able to, and various buglets which were uncovered
6837 by trying to cross-compile itself that way have now been fixed.
6838 * This release breaks binary compatibility again. This time
6839 at least I've incremented the FASL file format version to 2, so that the
6840 problem can be detected reliably instead of just causing weird errors.
6841 * various new style warnings:
6842 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6843 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6844 ** using the lexical binding of a variable named in the *FOO* style
6845 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6846 as specified by ANSI.
6847 * *RANDOM-STATE* is no longer automatically initialized from
6848 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6849 default behavior of the system is to repeat its behavior every time
6850 it's run. If you'd like to change this behavior, you can always
6851 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6852 old convention there was no comparably easy way to get the system to
6853 repeat its behavior every time it was run.
6854 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6855 FTYPE declarations has been removed, in favor of their ANSI
6856 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6857 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6858 the types of their sequence arguments can be determined at compile time.
6859 This is done through a new open code expansion for MAP which eliminates
6860 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6861 argument types can be determined at compile time.
6862 * The optimizer now transforms COERCE into an identity operation when it
6863 can prove that the coerced object is already of the correct type. (This
6864 can be a win for machine generated code, including the output of other
6865 optimization transforms, such as the MAP transform above.)
6866 * Credit information has been moved from source file headers into CREDITS.
6867 * Source file headers have been made more standard.
6868 * The CASE macro now compiles without complaining even when it has
6871 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6873 * (Note that the way that the PCL macroexpansions were rewritten
6874 to accommodate the change in DEFGENERIC below breaks binary
6875 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6876 not run under sbcl-0.6.2. Once we get out of alpha releases,
6877 i.e. hit release 1.0.0, we'll probably try to maintain binary
6878 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6879 and sbcl-1.4.4. Until then, however, it might be fairly common
6880 for maintenance releases to break binary compatibility.)
6881 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6883 * The reporting of unhandled signals has been changed to print some
6884 explanatory text as well as the report form. (Previously only
6885 the report form was printed.)
6886 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6887 it defines, so that the compiler no longer issues undefined function
6888 warnings for compiled-but-not-yet-loaded generic functions.
6889 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6890 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6891 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6892 section of the ANSI spec are supported.
6893 * The "" nickname for the "KEYWORD" package has been removed.
6894 The reader still handles symbol tokens which begin with a package marker
6895 as keywords, but it doesn't expose its mechanism for doing so in the
6896 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6897 * The system now issues STYLE-WARNINGs for contradictory TYPE
6898 proclamations. (Warnings for contradictory FTYPE proclamations would
6899 be nice too, but those can't be done usefully unless the type system
6900 is made smarter about FUNCTION types.)
6901 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6902 systematized, so that "*target-*.lisp is supposed to exist only on the
6903 target and imply that there's a related file which exists on the
6904 host, and *host-*.lisp is supposed to exist only on the host and imply
6905 that there's a related file which exists on the target. This involves a
6906 lot of renaming. Hopefully the acute confusion caused by the renaming
6907 will be justified by the reduction in chronic confusion..
6908 ** runtime-type.lisp -> early-target-type.lisp
6909 ** target-type.lisp -> late-target-type.lisp
6910 ** early-host-format.lisp -> early-format.lisp
6911 ** late-host-format.lisp -> late-format.lisp
6912 ** host-error.lisp -> misc-error.lisp
6913 ** early-error.lisp -> early-target-error.lisp
6914 ** late-error.lisp -> late-target-error.lisp
6915 ** host-defboot.lisp -> early-defboot.lisp
6916 ** code/misc.lisp -> code/target-misc.lisp
6917 ** code/host-misc.lisp -> code/misc.lisp
6918 ** code/numbers.lisp -> code/target-numbers.lisp
6919 ** code/early-numbers.lisp -> numbers.lisp
6920 ** early-host-type.lisp -> early-type.lisp
6921 ** late-host-type.lisp -> late-type.lisp
6922 ** host-typep.lisp -> typep.lisp
6923 ** load.lisp -> target-load.lisp
6924 ** host-load.lisp -> load.lisp
6925 ** host-disassem.lisp -> disassem.lisp
6926 ** host-insts.lisp -> insts.lisp
6927 ** byte-comp.lisp -> target-byte-comp.lisp
6928 ** host-byte-comp.lisp -> byte-comp.lisp
6929 ** host-signal.lisp -> signal.lisp
6930 ** host-defstruct.lisp -> defstruct.lisp
6931 ** late-target-type.lisp -> deftypes-for-target.lisp
6932 Furthermore, several other previously target-only files foo.lisp (e.g.
6933 hash-table.lisp and random.lisp) have been split into a target-and-host
6934 foo.lisp file and a target-only target-foo.lisp file, with their key type
6935 definitions in the target-and-host part, so that the cross-compiler will
6936 know more about target types.
6937 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6938 gone away. In their place are various *BACKEND-FOO* variables
6939 corresponding to the slots of the old structure.
6940 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6941 into the target SBCL has been fixed.
6942 * The chill.lisp system for loading cold code into a running SBCL
6944 * Support for the CMU CL "scavenger hook" extension has been removed.
6945 (It was undocumented and unused in the CMU CL sources that SBCL was
6946 derived from, and stale in sbcl-0.6.1.)
6947 * Various errors in the cross-compiler type system were detected
6948 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6949 (enabling various consistency checks). Many of them were fixed,
6950 but some hard problems remain, so the compiler is back to
6951 running without *TYPE-SYSTEM-INITIALIZED* for now.
6952 * As part of the cross-compiler type system cleanup, I implemented
6953 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6954 * I have started adding UNCROSS calls throughout the type system
6955 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6956 on cross-compiler input files will be able to go away, and various
6958 * CONSTANTP now returns true for quoted forms (as explicitly required
6961 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6963 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6964 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6965 (MAKE-LIST -1). In the longer term, it ought to become true
6966 that declarations are assertions even at SAFETY 1. For now, it's not
6967 quite true even at SAFETY 3, but it's at least more nearly true..
6968 (Note that this change seems to increases the size of the system by
6969 O(5%) and to decrease the speed of the compiler by 20% or more.)
6970 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6971 for the problem of printing dozens of lines of distracting information
6972 about low-level system machinery as part of the top stack frame
6973 on entry to the debugger when an undefined function was called.
6974 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6975 is not reset to COMMON-LISP-USER.
6976 * Compilation of stuff related to dyncount.lisp has been made conditional
6977 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6978 smaller. The various dyncount-related symbols have been moved into
6979 a new "SB-DYNCOUNT" package.
6980 * tty-inspect.lisp has been renamed to inspect.lisp.
6981 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6982 feature has gone away. (When we eventually port to other flavors of
6983 libc and/or Unix, we'll try to make the differences between flavors
6984 invisible at the user level.)
6985 * Various other *FEATURES* tags, and/or their associated conditionals,
6986 have been removed if obsolescent, or given better documentation, or
6987 sometimes given more-mnemonic names.
6989 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6991 * tidied up "make.sh" script
6992 * tidied up system directory structure
6993 * better "clean.sh" behavior
6994 * added doc/FOR-CMUCL-DEVELOPERS
6995 * many many small tweaks to output format, e.g. removing possibly-confusing
6996 trailing #\. character in DESCRIBE-INSTANCE
6997 * (EQUALP #\A 'A) no longer signals an error.
6998 * new hashing code, including EQUALP hashing
6999 * tidied up Lisp initialization and toplevel
7000 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
7001 * command line argument processing
7002 * added POSIX-GETENV function to deal with Unix-ish environment variables
7003 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
7004 terminating SBCL on EOF
7005 * non-verbose GC by default
7006 * There is no more "sbcl" shell script; the sbcl file is now the C
7007 runtime executable (just like CMU CL).
7008 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
7010 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
7011 symbol and package information as Lisp native symbol and package objects
7012 instead of strings naming symbols and strings naming packages. This way,
7013 whenever packages are renamed (as in warm init), debug information is
7014 transformed along with everything else.
7015 * tweaked the optimization policy declarations which control the building
7016 of SBCL itself. Now, among other things, the system no longer saves
7017 source location debugging information. (This helps two problems at once
7018 by reducing SBCL size and by keeping SBCL from trying to look for its
7019 sources -- which may not exist -- when reporting errors.)
7020 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
7021 debugging and testing purposes
7022 * cleaned up printing, making the printer call PRINT-OBJECT for
7023 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
7024 methods, giving nearly-ANSI behavior
7025 * converted almost all special variables to use *FOO* naming convention
7026 * deleted PARSE-TIME functionality, since it can be done portably
7027 * moved some files out of cold init into warm init
7028 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
7030 * regularized formatting of source files
7031 * added an install.sh script
7032 * fixed ridiculous memory usage of cross-compiler by making
7033 compiler/alloc.lisp not try to do pooling unless it can hook
7034 itself into the GC of the cross-compilation host. Now the system
7035 builds nicely on my old laptop.
7036 * added :SB-ALLOC in target-features.lisp-expr
7037 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
7038 was not implemented)
7039 * re-did condition handling and note reporting in the compiler. Notes
7040 are no longer handled by signalling conditions. Style warnings
7041 and warnings are handled more correctly and reported in such a way
7042 that it's easy to find one or the other in your output (so that you
7043 can e.g. figure out which of many problems caused COMPILE-FILE to
7045 * changed the severity of several compiler warnings from full WARNING
7046 to STYLE-WARNING in order to conform with the ANSI spec; also changed
7047 compiler note reporting so that it doesn't use the condition system
7048 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
7049 COMPILE-FILE command)
7050 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
7051 function. As a consequence, START-BLOCK and END-BLOCK declarations are
7052 no longer supported, since their implementation was deeply intertwingled
7053 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
7054 * removed bogus "support" for compiler macros named (SETF FOO), and
7055 removed the compiler macro for SETF INFO (but only after making a fool
7056 of myself on the cmucl-imp mailing list by posting a bogus patch for
7057 DEFINE-COMPILER-MACRO..)
7058 * Compiled files containing forms which have side effects on the Lisp
7059 reader (such as DEFPACKAGE forms) are now handled more correctly.
7060 (Compiler queuing of top level lambdas has been suppressed by setting
7061 *TOP-LEVEL-LAMBDA-MAX* to 0. )
7062 * deleted various currently-unused source files, e.g. gengc.lisp. They
7063 may be added back at some point e.g. when porting to other architectures,
7064 but until they are it's distracting to distribute them and to try to
7066 * deleted "UNCROSS couldn't recurse through.." style warnings, since
7067 there were so many of them they're just distractions, and UNCROSS is
7068 known to be able to handle the current sources
7069 * moved PROFILE functionality into TRACE, so that it will be clear
7070 how the wrapping and unwrapping of functions when you profile them
7071 interacts with the wrapping and unwrapping of functions when you
7072 trace them. (Actually, the functionality isn't there yet, but at least
7073 the interface specification is there. Hopefully, the functionality will
7074 arrive with some future maintenance release.)
7075 * removed host-oops.lisp
7076 * changed signature of QUIT function to allow UNIX-CODE argument
7077 * fixed READ-SEQUENCE bug
7078 * tweaked verbose GC output so that it looks more like the progress
7079 output that ANSI specifies for functions like LOAD
7080 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
7081 * added <http://sbcl.sourceforge.com> to the banner information printed by