1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.1.13:
3 * enhancement: Top-level defmethod without defgeneric no longer causes
4 undefined-function warnings in subsequent forms. (lp#503095)
6 changes in sbcl-1.1.13 relative to sbcl-1.1.12:
7 * optimization: better distribution of SXHASH over small conses of related
9 * other improvements to SXHASH:
10 ** use the whole of the positive-fixnum range for SXHASH of fixnums
11 * enhancement: The error message when calling an undefined alien function
12 includes the name of the function on x86-64.
13 * enhancement: sb-ext:run-program now supports :environment on Windows.
14 * enhancement: ASDF is no longer required to load contribs at runtime.
16 * enhancement: when called with a symbol, FIND-RESTART no longer calls
17 COMPUTE-RESTARTS, making it faster and cons less (lp#769615)
18 * enhancement: FIND-RESTART and COMPUTE-RESTARTS handle huge restart
19 clusters better in some cases
20 * enhancement: SOME/ANY/other quantification higher-order functions no
21 longer cons. (lp#1070635)
22 * bug fix: forward references to classes in fasls can now be loaded.
24 * bug fix: don't warn on a interpreted->compiled function redefinition
25 from the same location. (patch by Douglas Katzman, lp#1042405)
26 * bug fix: Create vectors of proper internal length when reading literal
27 vectors from FASLs. (Reported by Jan Moringen)
28 * bug fix: COMPILE can now successfully compile setf functions.
29 (Reported by Douglas Katzman)
30 * bug fix: run-program performs more correct escaping of arguments on
32 * bug fix: function-lambda-expression on generic functions returns the
34 * bug fix: (the [type] [constant]) now warns when [constant] matches
35 [type] except for the number of values. (Reported by Nathan Trapuzzano
37 * bug fix: signal errors in required cases of slot-definition initialization
39 * bug fix: run-sbcl.sh works better in the presence of symlinks on OS X.
40 (thanks to Stelian Ionescu, lp#1242643)
41 * bug fix: when given a restart object, FIND-RESTART checks whether the
42 restart is active and, when a condition is supplied, whether the restart
43 is associated to a different condition (lp#774410)
45 changes in sbcl-1.1.12 relative to sbcl-1.1.11:
46 * enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
47 shutdown(3). (thanks to Jan Moringen, lp#1207483)
48 * enhancement: document extensible sequences. (thanks to Jan Moringen,
50 * optimization: EQUAL and EQUALP transforms are smarter.
51 (thanks to Elias Martenson, lp#1220084)
52 * optimization: CHAR-EQUAL is faster for constant and base-char arguments.
53 * bug fix: probe-file now can access symlinks to pipes and sockets in
54 /proc/pid/fd on Linux. (reported by Eric Schulte)
55 * bug fix: SBCL can now be built on Solaris x86-64.
56 * bug fix: Floating point exceptions do not persist on Solaris anymore.
57 * bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
58 * bug fix: handle compiler-error in LOAD when it's not run from inside EVAL.
60 * bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base.
61 (thanks to Stephan Frank)
62 * bug fix: space allocation of result bignums in SB-GMP is more accurate.
63 (thanks to Stephan Frank, lp#1206191)
64 * bug fix: sb-safepoint can now reliably handle signal interruptions of
65 foreign code. (lp#1133018)
66 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
67 constructors no longer fails to merge actual and default initargs
68 (thanks to Jan Moringen, lp#1179858)
69 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
70 constructors handles non-KEYWORD initialization arguments more correctly.
71 * bug fix: loading the SB-SIMPLE-STREAMS contributed module no longer
72 clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, lp#884603)
73 * bug fix: class definitions with CPLs inconsistent with their metaclasses
74 are less likely to destroy the object system's integrity. (lp#309076)
75 * bug fix: restart clause parsing in RESTART-CASE is more in line with the
76 standard. (lp#1203585, thanks to Jan Moringen)
77 * bug fix: silence a note from RESTART-CASE under high-SPEED optimization
78 settings. (lp#1023721)
79 * bug fix: getting the order of arguments to
80 SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error
81 rather than a failed AVER. (reported by Paul Nathan)
82 * bug fix: Parsing of &optional/&key/&rest arguments now never overwrites
83 arguments during copying on x86 and x86-64; it may still happen on other
84 platforms when there are more fixed arguments than stack slots.
85 (reported by Jan Moringen)
87 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
88 * enhancement: support building the manual under texinfo version 5.
90 * enhancement: Windows builds no longer display the "Kitten of Death" message.
91 A warning is instead appended to the regular banner, and may be muted with
92 --noinform. (lp#728247)
93 * enhancement: support building under new linker handling of syscalls under
94 NetBSD. (thanks to Robert Swindells)
95 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
96 (regression since 1.1.9)
97 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
98 compiler macro. (thanks to Douglas Katzman).
99 * bug fix: signal a warning when defining a setf-function when a
100 setf-expander is already present. (thanks to Douglas Katzman).
101 * bug fix: improved threading on PPC.
102 * bug fix: ROOM works again on Windows. (lp#1206456)
103 * bug fix: Streams were flushed even when there was one byte still left in
104 the buffer. (lp#910213)
105 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
106 either NIL or :ERROR. (reported by Jan Moringen)
108 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
109 * enhancement: ASDF has been updated to 3.0.2.
110 * optimization: stack frames are packed more efficiently on x86oids, which
111 ought to reduce the frequency of Methuselahn conservative references (it
112 certainly helps with gc.impure.lisp / BUG-936304 on x86).
113 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
114 recognized in modular arithmetic contexts, and compile to native negate,
115 rather than going through bignums only to keep the low bits.
116 * bug fix: Compiling potential modularic arithmetic forms does not cause type
117 errors when some integer types lack lower or upper bounds. (lp#1199127)
118 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
119 bitwidth before being used in a non-modular context. (lp#1199428)
120 * bug fix: Multiple catch/unwind blocks in a single function are now
121 allocated in the right stack order on win32. (lp#1072739)
123 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
124 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
125 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
126 * enhancement: disassemble now annotates some previously missing static
127 functions, like LENGTH.
128 * enhancement: clean.sh now also cleans doc/internals.
129 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
130 print a symbol with a package prefix.
131 * enhancement: The debugger and backtracing are more robust against buggy
132 PRINT-OBJECT methods.
133 * optimization: calls to static functions on x86-64 use less instructions.
134 * optimization: compute encode-universal-time at compile time when possible.
135 * optimization: when referencing internal functions as #'x, don't go through
136 an indirect fdefn structure.
137 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
138 * optimization: (mod fixnum) type-checks are performed using one unsigned
139 comparison, instead of two.
140 * optimization: enable more modular arithmetic transforms in the presence of
142 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
143 when the result is known to be negative.
144 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
145 * optimization: comparisons between rationals and constant floats or between
146 integers and constant ratios are now converted to rationals/integers at
148 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
149 * bug fix: problems with NCONC type derivation (reported by Jerry James).
150 * bug fix: EXPT type derivation no longer constructs bogus floating-point
151 types. (reported by Vsevolod Dyomkin)
152 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
153 addrinfo. (lp#1187041, patch by Jerry James)
154 * bug fix: uninitialized type-error conditions can now be printed.
156 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
157 listening, allowing several tests to run in parallel.
158 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
159 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
161 * bug fix: Specialised SIMD-PACK types can be negated.
162 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
163 reported by Eric Marsden)
164 * bug fix: FP return values from foreign calls are always rounded to single
165 or double float precision on x87.
166 * bug fix: Known-safe vector access on x86oids should not fail spuriously
167 when the index is of the form (+ x constant-positive-integer).
168 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
169 * bug fix: backtrace printer no longer tries to create very large lists when
170 the arg-count register is clobberred by other code. (lp#1192929)
171 * bug fix: x86 should never signal an FP exception while boxing an FP value,
172 a situation that lands us into ldb.
174 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
175 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
176 ROOM, plus a few SB-INTROSPECT functions) has been completely
177 rewritten; it may now exhibit different bugs than before.
178 * new feature: minimal runtime/compiler intrastructure support for SSE
179 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
180 feature :sb-simd-pack. This should enable intrinsics extensions as
181 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
182 for maintaining a branch for so long.
183 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
184 the working directory of the spawned process.
185 (lp#791800) (patch by Matthias Benkard)
186 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
187 stack-allocated on PPC.
188 * enhancement: "fixed objects" can now be stack-allocated on PPC.
189 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
190 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
191 also returns VOPs which do not translate any functions, and finds
192 defoptimizer types ir2convert and stack-allocate-result.
193 * enhancement: better type derivation for APPEND, NCONC, LIST.
195 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
196 heap in a manner similar to the GC rather than its previous ad-hoc
197 scheme, and is therefore no less and possibly more accurate.
198 * fixes and enhancements related to Unicode:
199 ** the character database information has been updated to Unicode 6.2;
200 ** support for canonical and compatibility decomposition of characters has
201 been added, along with support for primary composition;
202 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
203 NFKD) has been included;
204 ** querying the character database for code points not defined by Unicode
205 gives less wrong answers (lp#1178038, reported by Ken Harris)
206 * enhancement: print intermediate evaluation results for some ASSERTed
207 expressions. (lp#789497) (patch by Alexandra Barchunova)
208 * enhancement: x86-64 disassemblies are annotated with unboxed constant
209 values when there are references to (RIP-relative) unboxed constants.
210 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
211 of quadratically with the size of the input in the worst case.
213 * bug fix: handle errors when initializing *default-pathname-defaults*,
214 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
215 decoding errors, or directories being deleted.
216 * bug fix: Loading a core with a discontiguous dynamic space now correctly
217 computes the amount of dynamic space used.
218 * bug fix: disassembler missing ",8" on SHLD
219 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
220 that provide an "invalid" stack frame link for the signal handler
221 itself now use the saved-fp-and-pc mechanism to pick up from the stack
222 frame in the interrupt (signal) context. This is known to affect
223 threaded FreeBSD/x86-64.
224 * bug fix: some LOOP statements couldn't be compiled.
226 * bug fix: sb-sequence:dosequence works on literal vectors.
227 * bug fix: errors in generic arithmetic show the assembly routine's
228 caller on x86 and x86-64. (lp#800343)
229 * bug fix: Compile-time type errors should never result in COMPILE-FILE
231 * bug fix: Known bad local calls do not cause strange failures when
232 emitting or dumping code. (lp#504121)
233 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
234 codegen errors: type checks are inserted as necessary. (lp#1177703)
235 * bug fix: Unsigned modular arithmetic is correctly converted into signed
236 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
237 * bug fix: a combination of inlined local function with &optional and
238 recursion no longer causes undescriptive compiler errors. (lp#1180992)
239 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
240 when testing for non-zero-ness.
241 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
243 * bug fix: Type mismatch for the value of conditional expressions are
244 correctly reported when detected at compile-time, instead of complaining
245 about a constant NIL (similar for non-EQ-comparable catch tags).
246 * bug fix: Referring to INLINE global functions as values should not result
247 in a compilation failure. (lp#1035721)
248 * optimization: faster ISQRT on fixnums and small bignums
249 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
250 * optimization: On x86-64, the number of multi-byte NOP instructions used
251 for code alignment is now always minimal.
252 * optimization: On 64-bit targets, the compiler generates much faster
253 code for type checks for types known at compile time that are smaller
254 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
255 their COMPLEX variants.
256 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
257 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
258 * optimization: ROOM no longer conses so egregiously on non-x86oid
260 * optimization: associative bitwise operations reassociate patterns like
261 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
263 * optimization: quasiquote expressions now perform more constant folding,
264 instead of consing equal lists at runtime. (lp#1026439)
265 * optimization: local call analysis of inlined higher-order function
266 should converge more quickly, resulting in better code for complex
268 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
269 integer constants are handled more cleverly, especially when they
270 can be represented as sign-extended (signed-byte 32). (Based on a
271 patch by Douglas Katzman)
272 * optimization: IF/IF conversion should reliably result in sane code
273 when (some of) the results of the inner IF are always false or
275 * optimization: On x86oids, variable right shifts of machine words are
276 compiled into straight SAR/SHR, instead of going through the generic
279 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
280 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
282 * bug fix: :allocation slot option works for condition slots
284 * bug fix: redefining conditions does not lead to multiple evaluations of
285 hairy slot initfunctions anymore (lp#1164969)
286 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
288 * bug fix: function constants now work as initforms and default initarg
289 values of conditions (lp#539517)
290 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
291 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
292 * bug fix: no more bogus ## references when pretty printing backquoted
293 forms with non-trivial structure sharing. (lp#1161218)
294 * bug fix: Don't signal an error on (setf (documentation nil 'function)
295 "doc"). Signal a style-warning instead when trying to set documentation
296 of NIL for all other documentation types. (Reported by Zach
297 Beane; regression since 2e52fa05.)
298 * bug fix: modular arithmetic involving large constants and conditionals
299 should no longer result in spurious dead code elimination. (Reported by
301 * bug fix: our mach exception handler can seemingly called very early in
302 the program execution process on OS X 10.8.0. Try and handle that case
303 robustly, without potentially leaking mach ports too much.
304 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
306 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
307 * enhancement: the continuable error when defknown-ing over extant
308 fndb entries can be ignored by passing :overwrite-fndb-silently t
309 as a keyword argument to sb-c:defknown (after attributes). Useful
310 to allow defknown to be re-loaded. Use with :allow-other-keys t
311 for backward compatibility.
312 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
314 * bug fix: Prevent a make-array transform from modifying source forms
315 causing problems for inlined code. Thanks to Bart Botta.
316 (regression since 1.0.42.11-bis)
317 * bug fix: clear-output calls the correct gray stream routine,
318 sb-gray:stream-clear-output. (lp#1153257)
319 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
321 * bug fix: Better error messages for package operations (lp#1154776)
322 * bug fix: delete-package on a nonexistent package should signal a cerror.
323 (regression since 1.0.37.44).
324 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
325 (lp#1154946, lp#1072112)
326 * bug fix: compiling make-array no longer signals an error when the
327 element-type is an uknown type, a warning is issued instead.
328 Thanks to James Kalenius (lp#1156095)
329 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
330 produces wrong results for some inputs. (Thanks to Jan Moringen.)
333 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
334 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
336 * new feature: package local nicknames. See manual for details.
337 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
338 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
339 * enhancement: easier to use restarts for resolving name-conflicts
340 resulting from IMPORT, EXPORT, or USE-PACKAGE.
341 * enhancement: variant DEFPACKAGE forms now signal a full error with
342 restarts provided for resolving the situation. (lp#891351)
343 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
344 DEFPACKAGE forms can now signal a full error with restarts provided for
345 resolving the situation. See manual for details. (lp#891351)
346 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
347 (Thanks to Anton Kovalenko.) (lp#1102748)
348 * enhancement: backtrace improvements
349 ** secondary CLOS dispatch functions have better debug names (lp#503081)
350 ** easier to read method names in backtraces. See
351 SB-DEBUG:*METHOD-FRAME-STYLE*.
352 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
353 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
354 SB-DEBUG:BACKTRACE-AS-LIST.
355 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
356 information is available in less intrusive form as frame annotations.
357 * enhancement: SB-POSIX now provides MAP-ANON.
358 * enhancement: test-suite results are colorized, failures in red, unexpected
359 success in green. Works on Windows and on terminals with ANSI escape code
360 support. Can be disabled with --no-color.
361 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
362 (thanks to James M. Lawrence)
363 * bug fix: no more unused variable style warnings from RESTART-CASE
364 macroexpansion (lp#1113859)
365 * bug fix: no more unused variable style warnings when loading
366 sb-bsd-sockets.asd (lp#1114681)
367 * bug fix: deleting a package removes it from implementation-package
368 lists of other packages.
369 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
370 This does not fix the occasional "interrupt already pending" issue, though.
371 * bug fix: (setf (documentation 'x 'function)) and
372 (setf (documentation #'x t)) set documentation in different places.
373 (regression since 1.0.43.63)
374 * bug fix: build on newer glibc. (lp#1095036)
376 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
377 * optimization: LOOP expressions using "of-type character" have slightly
378 more efficient expansions.
379 * bug fix: very long (or infinite) constant lists in DOLIST do not result
380 in very long compile times or heap exhaustion anymore. (lp#1095488)
381 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
382 * bug fix: adjust-array ignored :initial-element for simple-vectors.
384 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
385 longer cause infinite loops (on circular data) or violate eqlity
386 constraints. (lp#1099708)
387 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
389 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
390 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
392 * enhancement: support for C-c to interrupt the foreground thread
393 on Windows. (Thanks to Anton Kovalenko.)
394 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
395 * enhancement: Safepoint builds on POSIX platforms can now optionally be
396 built without pseudo-atomic sequences and their run-time overhead.
397 * enhancement: Threads created outside of Lisp can enter Lisp through
398 alien callbacks and appear as Lisp threads for the duration of that
399 function invocation. On safepoint builds only.
400 * enhancement: Miscellaneous improvements to namestrings and underlying
401 calls to OS functions for file system access on Windows. (Thanks to
403 * enhancement: The MSI installer support for Windows now uses Windows
404 Installer XML at least version 3.5 and includes various usability
405 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
406 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
407 on Windows. (Thanks to Anton Kovalenko.)
408 * enhancement: The Windows backend now supports the x86-64 platform.
409 (Thanks to Anton Kovalenko.)
410 * bug fix: fasls are now once again directly executable (on platforms
411 supporting shebang lines, with a suitably-installed sbcl).
412 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
413 * bug fix: Fix CAS access to slots of direct instances of structure classes
414 in the presence of subclasses sharing the same conc-name.
415 * bug fix: Logical pathname namestrings on Windows have been changed to
416 be lower-case, to minimize differences between POSIX and Windows.
418 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
419 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
420 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
421 (NT 5.0) is no longer being maintained.
422 * notice: Starting with this version, SBCL on Windows no longer supports
423 building with disabled thread support.
424 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
425 * enhancement: New feature sb-dynamic-core allows the runtime to be
426 rebuilt or relocated without requiring changes to the core file on
427 all linkage table platforms. Required on Windows. (Thanks to Anton
429 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
430 * enhancement: I/O on Windows unnamed pipes is interruptible
431 asynchronously using interrupt-thread, timers when running on Windows NT
432 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
434 * enhancement: Support for the experimental safepoint-based stop-the-world
435 protocol on the PowerPC platform.
436 * bug fix: Non-blocking reads from the Windows console were not necessarily
437 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
438 * bug fix: stability of threads on Windows has been improved upon through
439 an updated stop-the-world protocol (thanks to Anton Kovalenko).
441 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
442 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
443 (COMPILE and COMPILE-FILE still do.)
444 * optimization: the SPARC backend now supports the precise generational
445 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
446 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
447 * enhancement: add experimental support for the SB-THREAD feature and the
448 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
449 Threads are enabled by default, and this version of SBCL is considered
450 to be the last and final release to officially support building with
452 * optimization: The compiler no longer rotates loops in some cases where
453 this transformation actually lead to worse code being generated.
454 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
455 symbol-macros by lexical bindings.
456 * bug fix: stack allocation was prevented by high DEBUG declaration in
458 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
459 (thanks to SANO Masatoshi)
460 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
461 :JUNK-ALLOWED was true.
462 * bug fix: type derivation inferred overly conservative types for
463 unions of array types. (lp#1050768)
465 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
466 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
467 source annotation of DISASSEMBLE output. Defaults to T.
468 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
469 WAIT-P argument added to WITH-RECURSIVE-LOCK.
470 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
472 * enhancement: Optional features (not enabled by default) allow the
473 use of signals for inter-thread synchronization to be reduced on certain
474 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
475 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
476 to test these experimental features. Known remaining bugs include minor
477 thread safety issues, less timely freeing of memory by GC, and certain
478 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
479 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
480 comparisons, particularly on almost-sorted inputs.
481 * bug fix: Reading floats with large exponents no longer takes too much time
482 before reporting that the exponent is too large.
483 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
484 correctly when the received datagram is larger than the provided buffer.
485 (lp#1023438, thanks to Robert Uhl)
486 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
487 a SYMBOL-VALUE form with a constant symbol argument.
488 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
489 into a DEFCAS defined place was used as the place.
490 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
491 for from bit-vectors.
492 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
493 lead to internal errors or crashes (lp#1058799).
494 * documentation: a section on random number generation has been added to the
497 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
498 * enhancement: implicit generic function warnings now specify the package
499 in which the new generic function is being created.
500 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
501 updates of CAS-able places (similar to Clojure's swap!).
502 * enhancement: run-program no longer decodes and re-encodes environment when
503 :environment argument is not provided. (lp#985904)
504 * enhancement: errors during compiler-macro expansion no longer cause
505 runtime errors, only a compile-time warning, otherwise behaving as if
506 the compiler macro had declined to expand.
507 * optimization: On x86-64, code alignment of block headers is done with
508 multi-byte NOPs now instead of repetitions of the single-byte NOP.
509 * optimization: MAP-INTO is substantially faster when the target sequence is
510 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
511 thanks to James M. Lawrence)
512 * optimization: the compiler no longer heap-conses to check exits in cases
513 where the exit function is dynamic extent, or when it can prove the exit
514 function cannot escape. (lp#1002534)
515 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
516 element type, and vectors that aren't SIMPLE-ARRAYs.
517 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
518 speed (around 1/3 the time in some cases), and a little better in terms of
519 comparison calls. (Thanks to Takeru Ohta)
520 * bug fix: On SPARC, a limitation on the number of code constants emittable
521 by the compiler has been lifted, allowing certain long functions to
522 compiled and assembled which had previously been unsupported; fixes
523 cl-bench on this ISA (lp#1008996).
524 * bug fix: potential for infinite recursion during compilation of CLOS slot
525 typechecks when dependency graph had loops. (lp#1001799)
526 * bug fix: error forms reported with some program-errors were not escaped
528 * bug fix: functions from EVAL are now on more equal footing with functions
529 from COMPILE. (lp#1000783, lp#851170, lp#922408)
530 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
531 objects as its :METHOD-COMBINATION argument, not just lists designating
532 method combinations. (lp#936513)
533 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
535 * bug fix: restore build on solaris/sparc. (lp#1008506)
536 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
537 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
538 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
539 as keyword arguments no longer accidentally match unevaluated symbols
541 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
542 parameter was zero, now it signals an error. (lp#905817, fixed since
544 * bug fix: run-program with :pty t no longer makes the pty as the process's
546 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
549 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
550 * RANDOM enhancements and bug fixes:
551 ** bug fix: the range and distribution of random integers could be
552 catastrophically wrong when the compiler derived the type of its
553 argument as a disjoint set of small integers.
554 ** bug fix: the distribution of random integers is now completely
555 uniform even when the specified limit is not a power of two.
556 (Previously some values could be about 0.1 % more probable than
557 others in the worst case.) (lp#309467)
558 ** RANDOM on large integer arguments is generally faster and conses
559 less than before; this is visible for fixnums above a length of
560 about 24 bits, but extremely so for bignums: the old implementation
561 used time and space quadratical in the size of the argument there,
562 the new one is linear.
563 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
564 main entry point, SB-EXT:QUIT is deprecated.
565 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
566 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
567 * enhancement: FASL loading no longer grabs the world-lock.
568 * enhancement: GENCGC reclaims space more aggressively when objects being
569 allocated are a large fraction of the total available heap space.
571 * enhancement: backtraces show the correct number of arguments for frames
572 called with too many arguments.
573 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
575 * enhancement: ASDF has been updated 2.21.
576 * optimization: fewer uses of full calls to signed modular functions.
578 * optimization: typechecking alien values is typically 5 x faster.
579 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
581 * bug fix: file compilation performance issues when dumping subtypes
582 of CHARACTER (lp#994487)
583 * bug fix: fixed disassembly of some SSE instructions on x86-64.
584 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
585 OPEN. (lp#969352, thanks to Kambiz Darabi)
586 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
588 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
589 classoid even if X was not the proper name of the class. (lp#941102)
590 * bug fix: declaration leakage between lexical environments due to careless
591 use of NCONC in MAKE-LEXENV. (lp#924276)
592 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
593 *default-pathname-defaults* contains NAME or TYPE components.
594 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
595 from CL package, e.g. (loop . 10).
596 * bug fix: run-program with existent or non-existent files for :output or
597 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
598 returns NIL instead of signalling an obscure error.
599 * bug fix: fix miscompilation of some logand forms with large constant
600 arguments. (lp#974406)
601 * bug fix: account for funcallable-instance objects properly in ROOM.
602 * bug fix: incorrect octets reported for c-string decoding errors.
604 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
606 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
607 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
608 allowing faster release of memory back to the OS. (lp#991293)
609 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
610 existing deadline for the dynamic scope of its body.
611 * bug fix: compiler-internal interval arithmetic needed to be more
612 conservative about open intervals when operated on by monotonic but not
613 strictly-monotonic functions. (lp#975528)
614 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
615 it's also slightly faster. (lp#998926)
616 * bug fix: better error messages for malformed declarations.
618 * bug fix: define-condition didn't return the name of the defined condition.
620 ** improved docstrings: REPLACE (lp#965592)
622 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
623 * bug fix: fix copy-structure. When copying from stack to heap, garbage
624 could end up in the heap making GC unhappy.
625 (Thanks to James Knight, lp#911027)
627 ** SBCL can now be built using Clang.
628 ** ASDF has been updated 2.20.
629 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
630 * bug fix: don't complain about a too-hairy lexical environment for inlining
631 when the function has never been requested for inlining. (lp#963530)
633 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
634 * enhancements to building SBCL using make.sh:
635 ** --fancy can be specified to enable all supported feature enhancements.
636 ** --with-<feature> and --without-<feature> can be used to specify
637 which features to build with.
638 ** --arch option can be used to specify the architecture to build for.
639 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
640 full-blows cross-compilation.)
641 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
642 which allows specifying name of the default interning package for the
644 * enhancement: when *READ-EVAL* is true, arrays with element type other than
645 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
646 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
647 null alien when malloc() fails. (lp#891268)
648 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
649 conditions can be conveniently accessed through function with the same
650 name, analogously to CONTINUE.
651 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
652 from the printer by type, causing an error marker to be printed instead.
653 (Thanks to Attila Lendvai)
654 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
655 generally behave better when errors occur during printing.
656 * enhancement: the test runner now takes a --report-skipped-tests argument
657 to report the individual tests skipped as well as the number of skipped
659 * enhancement: undefined functions now appear in backtraces as ("undefined
660 function") instead of ("bogus stack frame") on x86oids.
661 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
662 deadlock errors are reported in an easier-to-decipher manner.
663 * enhancement: DESCRIBE on type designators reports the expansion in more
665 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
666 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
667 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
668 * enhancement: better disassembly of segment-prefixes on x86 and other
669 instruction prefixes (e.g. LOCK) on x86 and x86-64.
670 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
671 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
672 * optimization: SUBSEQ on vectors of unknown element type is substantially
674 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
675 be stack-allocated. (lp#902351)
676 * optimization: the compiler is smarter about representation selection for
677 floating point constants used in full calls.
678 * optimization: the compiler no longer refuses to coerce large fixnums to
679 single floats inline, except on x86 where this limitation is still
681 * optimization: truncation operations on integers with constant divisor
682 arguments 1 and -1 are optimized away.
683 * bug fix: deadlock detection could report the same deadlock twice, for
684 two different threads. Now a single deadlock is reported exactly once.
685 * bug fix: interval-arithmetic division during type derivation did not
686 account for signed zeros.
687 * bug fix: compiler error when typechecking a call to a function with
688 non-constant keyword arguments.
689 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
690 * bug fix: condition slot accessors no longer cause undefined function
691 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
692 form that defines them. (lp#896379)
693 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
695 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
696 bogusly report NIL, T.
697 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
698 required arguments ignored and performed assignments to others.
700 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
701 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
702 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
703 * bug fix: redefining a function whose previous definition contained an
704 unknown type no longer causes a style-warning. (lp#806243)
705 * bug fix: undefined functions now appear in backtraces as ("undefined
706 function") instead of ("bogus stack frame") on non-x86oids.
707 * bug fix: backtraces are no longer cut off at ("undefined function") when
708 called under certain circumstances (involving a caller-allocated stack
710 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
711 systems. (regression since 1.0.53)
712 * bug fix: GC deadlocks from dladdr() on certain platforms.
713 * bug fix: broken standard streams no longer automatically cause recursive
714 errors on debugger entry.
715 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
716 (regression since 1.0.53)
717 * bug fix: attempts to stack allocate a required argument to a function with
718 an external entry point caused compiler-errors.
719 * bug fix: compiler notes for failed stack allocation for a function argument
720 no longer claim to be unable to stack allocate the function.
721 * bug fix: COERCE now signals a type-error on several coercions to
722 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
723 * bug fix: missing failure-to-stack-allocate compiler notes for some
724 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
725 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
727 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
729 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
730 * minor incompatible changes:
731 ** RENAME-FILE on a symbolic links used to rename the linked-to file
733 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
734 directory, but now signal an error instead. Use TRUENAME to resolve the
735 pathname if you wish to delete the linked directory, and DELETE-FILE if
736 you wish to delete the
737 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
738 symbols associated with it will trigger a compile-time warning.
739 * thread-related enhancements:
740 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
741 Many thanks to generous donors!)
742 ** Threading is now more reliable on non-Linux platforms. We still don't
743 consider threads on non-Linux platforms good enough to enable them by
744 default, but they're in a clearly better shape now.
745 ** Deadlines supported now on all platforms.
746 ** All blocking functions in the threading API now have a :TIMEOUT
748 ** Semaphore notification objects have been added to SB-THREAD.
749 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
750 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
751 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
752 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
753 using an API anologous to defining new SETFable places.
754 * GC-related enhancements and bug fixes:
755 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
756 and Gb suffixes. Default is megabytes as before.
757 ** on GENCGC targets, the default dynamic space size is now 512Mb for
758 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
759 exception, defaulting to mere 444Mb to fit under default ulimits.) The
760 new defaults are in place to prevent hitting swap on low-end systems.
761 Use build-time option --dynamic-space-size to build an SBCL with
762 another default, or the runtime option to adjust the size at startup: a
763 good size is at most equal to the amount of physical memory the system
765 ** on GENCGC targets, nursery and generation sizes now default to 5% of
767 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
768 refuses to create SIMPLE-FUN objects.
769 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
771 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
772 validation of pointer objects as GENCGC does, instead of a
773 comparatively weak bounds-check against the heap spaces.
774 * SB-BSD-SOCKETS bug fixes:
775 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
776 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
777 systems with getaddrinfo().
778 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
779 safe outside systems with getaddrinfo().
780 * enhancement: ASDF has been updated 2.019.
781 * enhancement: special-case TCO prevention for functions which never return
782 extended to untrusted types, keeping one more frame's worth of debug
783 information around in many cases.
784 * enhancement: debug-names of anonymous and local function are more
785 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
786 * enhancement: on win32, ABS of complex floats guards better against
787 overflows. (lp#888410)
788 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
789 process exiting with code 1. (lp#676987)
790 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
791 the system where on the filesystem the SBCL sources themselves are
792 located. (Thanks to Zach Beane)
793 * enhancement: the compiler is now able to derive tighter bounds for
794 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
795 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
796 correctly, even on wide-fixnum builds. (lp#887220)
797 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
798 resolved to directories.
799 * bug fix: type mismatch when assigning to lexical variables no longer
800 result in fasl-dumping internal type objects. (lp#890750)
801 * bug fix: type mismatch on (SETF AREF) and function return values no
802 longer result in fasl-dumping internal type objects.
803 * bug fix: With several combinations of argument types, for example (EXPT
804 <integer> <(complex double)>), EXPT now uses double-precision throughout
805 instead of partially calculating only to single-precision. (lp#741564;
806 thanks to Lutz Euler)
807 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
808 objects when interrupted by GC on PPC.
810 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
811 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
812 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
813 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
814 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
815 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
816 targets is now 63 bits (up from 61).
817 * enhancement: DESCRIBE now reports a lambda-list and source location
818 for complext setf-expanders.
819 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
820 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
821 of multiple-valued places to be set to NIL, instead of signalling an
822 error (per a careful reading of CLHS 5.1.2.3).
823 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
824 * bug fix: repair crash in x86oid darwin signal handling emulation
825 when built with certain compilers.
826 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
827 rotation arguments on x86-64. (lp#882151)
828 * bug fix: low-level control flow optimisations could result in bogus
829 code in functions with tail and non-tail calls to local functions on
831 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
832 to emit literal characters > (code-char 4095), for comparisons with
834 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
835 on 64 bit platforms. (lp#881445)
836 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
837 delete the wrong file when using relative pathnames. (lp#882877)
838 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
839 sequences and :KEY NIL.
841 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
842 * enhancement: ASDF has been updated to version 2.017.
843 * enhancement: the --core command line option now accepts binaries with
845 * enhancement: when built with :sb-core-compression, core files (regular
846 or executable) can be compressed with zlib. Use the :COMPRESSION
847 argument to SAVE-LISP-AND-DIE to specify a compression level.
848 * enhancement: --[no-]merge-core-pages determines whether the runtime
849 hints the operating system that identical core pages between SBCL
850 processes should share the same physical memory. Default is to only
851 enable this for compressed cores.
852 * optimization: SLEEP no longer conses.
853 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
854 or bit-vectors when using the standard pretty-print dispatch table.
855 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
857 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
858 AREF, CHAR, etc. (lp#826971)
859 * bug fix: compiler-errors causes by integer arguments with composed of
860 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
861 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
862 expressions. (lp#770184)
863 * bug fix: complex single float literals are correctly aligned when used
864 as arguments of arithmetic operators.
865 * bug fix: on 32-bit platforms, rounding of double floats larger than a
866 fixnum is correct. (reported by Peter Keller)
867 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
868 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
870 * bug fix: redefining classes such that slots with custom allocation are
871 added or removed works again.
873 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
874 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
875 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
876 MAKE-SOCKET-STREAM if using SERVE-EVENT.
877 * enhancement: added support for socket keepalive timeout intervals
878 and probe counts on Linux.
879 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
880 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
881 * enhancement: added new toplevel options --quit and --non-interactive
883 * enhancement: the Windows port of SBCL now builds and runs on Wine
884 (thanks to Anton Kovalenko).
885 * enhancement: more, and more correct, SSE instruction definitions on
886 x86-64 (thanks to Alexander Gavrilov).
887 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
888 to help the processor execute spin loops, when applicable. Currently
889 implemented for x86 and x86-64.
890 * optimization: unsigned integer divisions by a constant are implemented
891 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
892 * optimization: improved type-derivation for LOAD-TIME-VALUE.
893 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
894 instructions. (lp#814688)
895 * bug fix: COERCE to unfinalized extended sequence classes now works.
896 (reported by Jan Moringen; lp#815155)
897 * bug fix: a compiler error during typecheck generation, reported by Eric
899 * bug fix: obsolete instance protocol fires when shared slots are added
901 * bug fix: fixed-format floating point printing with scaling factors.
903 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
904 backtraces. (lp#818460)
905 * bug fix: better backtraces for interrupted syscall frames on x86.
907 * bug fix: SSE comparison instructions can be disassembled even when one
908 operand is in memory. (lp#814702)
909 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
910 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
911 type information associated with the VALUES form.
912 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
914 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
915 first write (lp#561642).
916 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
917 * bug fix: bound propagation involving conversion of large bignums to
918 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
920 * bug fix: &REST to &MORE conversion still works in unsafe call to known
921 functions; reported by Lutz Euler (lp#826459).
922 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
925 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
926 * enhancement: errors from FD handlers now provide a restart to remove
927 the offending handler.
928 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
930 * enhancement: location of user or system initialization file can now easily
931 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
932 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
933 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
934 the thunk, as a keyword argument, :arguments.
935 * enhancement: constraint propagation is simplified (and sped up) when
936 COMPILATION-SPEED > SPEED.
937 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
938 * enhancement: debugger understands &MORE arguments better.
939 * optimization: extracting bits of a single-float on x86-64 has been
940 optimized. (lp#555201)
941 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
942 when (> SPEED SPACE).
943 * optimization: local call trampolines (x86 and x86-64) are emitted
945 * optimization: implicit value cells for dynamic-extent closed-over bindings
946 on x86 and x86-64 can hold unboxed values as well.
947 * meta-optimization: improved compilation speed, especially for large
948 functions. (lp#792363 and lp#394206)
949 * bug fix: bound derivation for floating point operations is now more
950 careful about rounding possibly closing open bounds. (lp#793771)
951 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
952 backwards incompatible change in 1.0.48.27)
953 * bug fix: occasional debugger errors in when a type-error occured in a
954 function with dynamic-extent &rest list.
955 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
956 boa-construtors can be used to initialized structure slots.
957 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
958 (lp#795705, regression)
959 * bug fix: DIRECTORY works better on logical pathnames.
960 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
961 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
962 * bug fix: the compiler no longer constant-folds NaNs in
963 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
964 * bug fix: FORMAT now handles floating point rounding correct, eg.
965 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
967 * bug fix: style warning during lambda-list introspection of generic
968 functions with both optional and key argments.
969 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
971 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
974 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
975 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
976 interrupts for its body.
977 * enhancement: source locations are now available for files loaded as
978 source, compile-time-too evaluation, and initialization files.
979 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
980 virtual source-file information, eg. overriding input-file of COMPILE-FILE
981 when a temporary file is used for compilation.
982 * enhancement: ASDF has been updated to version 2.015.3.
983 * enhancement: backtraces involving frames from the default evaluator are
985 * enhancement: RUN-PROGRAM works with user-defined binary input and output
987 * enhancement: more informative compile-time warnings and runtime errors for
988 type-errors detected at compile-time.
989 * enhancement: deadlock detection for mutexes and spinlocks.
990 * enhancement: dynamic-extent for &rest lists stack allocate only their
991 spines, not their argumets. While portable code should not rely on this,
992 particularly in combination with inlining, it should make dynamic-extent
993 easier to use safely.
994 * enhancement: SB-POSIX improvements:
995 ** WNOHANG and WUNTRACED are exported.
996 ** SYSCALL-ERROR now also provides the name of the failing system call.
997 * enhancement: --script improvements:
998 ** errors on standard input, output, and error streams are handled and
999 cause scripts to exit silently, making them easier to use in shell
1001 ** backtraces from scripts now go to standard error instead of the
1002 terminal even if one is available.
1003 ** --script can be an argument, causing the script to be loaded from
1005 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
1006 strings to foreign memory.
1007 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
1008 a file, making it easier to understand heap dynamics.
1009 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
1010 allows the compiler to automatically elide rest-list allocation so long as
1011 the call sites are in functions that the compiler knows cannot escape.
1013 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
1014 especially in safe code when none of the required arguments have changed
1016 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
1017 uninterruptible, as well as blocking reads from socket streams created
1018 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
1019 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
1020 from the to-char if the from-char is not a dispatch-macro character.
1021 * bug fix: references to undefined variables in function calls that are
1022 optimized away now signal a runtime error. (lp#722734)
1023 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
1024 types from a function defined in the same file. (regression from
1026 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
1028 * bug fix: spurious errors during QUIT when standard streams were closed.
1030 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
1031 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
1032 years, is now no longer supported.
1033 * enhancement: read() and write() have been added to SB-POSIX.
1034 * enhancement: types of DEFSTRUCT constructors are proclaimed more
1035 accurately, allowing better typechecking of call-sites.
1036 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
1037 are no longer caught. (reverted to pre 1.0.34 behaviour)
1038 * optimization: slightly faster ISQRT. (lp#713343)
1039 * bug fix: better support for Solaris /bin/sh in sh-based tests.
1040 * bug fix: TRACE behaves better when attempting to trace undefined
1041 functions. (lp#740717)
1042 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
1043 to (FUNCALL #'(LAMBDA ...) ...).
1044 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
1045 a compile-time error. (lp#720382)
1046 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
1048 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
1049 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
1050 optimization. (regression from 1.0.45.18/1.0.46.15)
1051 * bug fix: package locks did not protects against compile-time side-effects
1052 of DEFUN. (lp#675584)
1053 * bug fix: --dynamic-space-size argument is validated more carefully.
1055 * bug fix: memory fault from printing a malformed simple-condition.
1057 * bug fix: redefining classes so that slot-definition classes change now
1058 engages the obsolete instance protocol. (lp#766271)
1059 * bug fix: constant improper lists could break source coverage recording.
1061 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
1062 could exhaust stack.
1064 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
1065 * bug fix: fix mach port rights leaks in mach exception handling code on
1066 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
1068 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
1069 * enhancement: redefinition warnings for macros from different files. (lp#434657)
1070 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
1071 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
1072 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
1073 processed using EVAL -- now the appropriate toplevel form is reported instead.
1074 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
1075 declarations. (lp#726331)
1076 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
1077 that NIL/NULL is excluded from the type.
1078 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
1080 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
1081 and its compatriots.
1082 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
1083 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
1084 stack-allocated values out of their dynamic-extent. (lp#310175)
1085 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
1086 x86-64 builds caused a type-error.
1087 * bug fix: calling COMPILE with something else than a lambda-expression as the
1088 second argument reports a more sensible error. (lp#718905)
1089 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
1090 are detected. (lp#520607)
1091 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
1093 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
1094 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
1095 methods. (regression from 1.0.45.18)
1096 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
1097 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
1098 * bug fix: several foreign functions accepting string also accepted NIL and
1099 consequently caused a memory fault at 0 now signal a type-error instead.
1101 * bug fix: under rare circumstances, constraint propagation could rewrite a
1102 variable reference to refer to a variable not in scope, causing an error
1103 during physical environment analysis when attempting to close over the
1104 variable. (lp#551227)
1105 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
1107 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
1108 * enhancement: largefile support on Solaris.
1109 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
1110 arguments (lp#710017)
1111 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
1112 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
1114 * optimization: ERROR and CERROR are approximately 5 times faster.
1115 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
1116 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
1117 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
1118 up instance creation in those cases.
1119 * optimization: arithmetic operations with multiple constant arguments in now
1120 have them reduced at compile-time. (lp#676414)
1121 * optimization: determining current character position on string-streams for
1122 pretty-printing was overly slow.
1123 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
1124 lifetime analysis to overwrite closed-over variables (lp#681092).
1125 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
1126 were not handled correctly (lp#713063).
1127 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
1129 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
1130 mistake. (lp#667297).
1131 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
1132 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
1133 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
1134 unintern the wrong symbol with the same name. (lp#693796)
1135 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
1136 making it possible to restore the initial table if it has been messed up.
1139 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
1140 * enhancement: ~/ and ~user/ are treated specially in pathnames.
1141 Refer to documentation for details.
1142 * enhancement: ASDF has been updated to version 2.010.
1143 * optimization: mutated closed-over variables that are only accessed by
1144 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
1145 declared to be DYNAMIC-EXTENT) are stored directly in their containing
1146 stack frame, rather than allocating a VALUE-CELL (lp#586103).
1147 * optimization: UNWIND-PROTECT cleanup functions are now declared
1149 * bug fix: backtracing function with &REST arguments now shows the full
1150 argument list. (lp#310173)
1151 * bug fix: return types for functions with complex lambda-lists are now
1152 derived properly (lp#384892)
1153 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
1154 long string arguments slowed the compiler down to a crawl.
1155 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
1156 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
1157 in the DEFMETHOD body.
1158 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
1159 messages, being instead replaced with the corresponding function name.
1160 * bug fix: don't derive overly complex unions of numeric types for arithmetic
1161 operators. (lp#309448)
1163 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
1164 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
1165 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
1166 * enhancement: ALLOCATION-INFORMATION also provides the page the object
1168 * enhancement: default dynamic-space size can be configured at build-time
1169 without touching source, using the --dynamic-space-size argument to make.sh.
1170 * enhancement: DESCRIBE recognizes symbols naming optimization policy
1171 qualities, and mentions ALWAYS-BOUND declarations.
1172 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
1174 * enhancement: ASDF has been updated to 2.009.
1175 * enhancement: the system detects known type-erros in calls better,
1176 signalling a full warning about violated proclaimed FTYPEs and violations
1177 of derived FTYPEs within the same file, including self-calls.
1178 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
1179 * optimization: constant-folding exploits numeric and character types, in
1180 addition member types.
1181 * optimization: numeric, character and member types that are inhabited by
1182 exactly one value are tested with EQL.
1183 * optimization: more conditional branches are eliminated during IR1.
1184 Branches are simplified before performing if/if-conversion, and simple
1185 equivalent branches (that only read the same constant or variable) are
1187 * improvements to the Windows port:
1188 ** change: canonical unparsing form for pathname namestrings now uses / as
1189 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
1190 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
1191 on Windows. (thanks to Kalyanov Dmitry)
1192 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
1194 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
1195 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
1196 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
1197 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
1199 * bug fix: interrupts arriving during CL:OPEN caused an error.
1200 * bug fix: overeager character buffering could cause input to block
1201 spuriously when reading from a pipe (lp#643686)
1202 * bug fix: more efficient timer expiry should avoid starvation on systems
1203 where number of SIGALRMs per second is restricted. (lp#375515)
1204 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
1205 * bug fix: compile-times no longer scale linearly with the size of
1206 quoted lists in source-code. (lp#654289)
1207 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
1208 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
1209 so badly. (lp#654485)
1210 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
1211 an error for eg. STRUCTURE. (lp#458015)
1212 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
1213 (lp#613871, thanks to Roman Marynchak)
1214 * bug fix: more reliable &REST list type derivation. (lp#655203)
1215 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
1216 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
1217 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
1218 also declared NOTINLINE. (lp#655581)
1219 * bug fix: the compiler could attempt to emit constant left shifts of
1220 greater value than n-word-bits. (lp#309063)
1221 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
1222 type information for the function being set. (lp#659220)
1223 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
1224 containing self-calls were recompiled with a new signature, and failed
1225 to warn when a self-call using the old signature was left in. (lp#655126)
1226 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
1227 :DEFAULT when the default external had character size other than 8 bits.
1229 * bug fix: derived types of functions in the same file were implicitly
1230 trusted, leading to potential heap corruption when those function were
1231 defined incompatibly. (lp#657499)
1232 * bug fix: existing ASDF source registries are ignored when building
1233 contribs (lp#659105)
1234 * bug fix: short-form DEFSETF checks that the second argument is a symbol
1235 (lp#655824, thanks to Roman Marynchak)
1236 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
1237 package-lock violation was detected. (lp#660752)
1238 * bug fix: the system can store different docstrings for a single function
1239 under different names. (lp#661631, regression from 1.0.29.24)
1240 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
1241 properly. (lp#384801)
1242 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
1243 of specified length could confuse the type derivation in unsafe code.
1245 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1246 fork with multiple Lisp threads running is made on every platform,
1247 not just Darwin. (lp#451111)
1248 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1249 around when core was saved, which could cause undefined behaviour when the
1251 * bug fix: Allow UNTRACE of functions that are no longer defined
1252 (lp#667657, thanks to Attila Lendvai)
1253 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1254 compile-time warning (lp#664373, thanks to Stas Boukarev)
1256 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1257 * incompatible change: FD-STREAMS no longer participate in the serve-event
1258 event-loop by default. (lp#316072)
1259 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1260 affects streams from CL:OPEN.
1261 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1262 default, but this is liable to change: applications needing serve-event
1263 for socket streams should explicitly request it using :SERVE-EVENTS T
1265 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1267 * enhancement: CLOS effective method functions and defclass slot typechecking
1268 function now have debug names for use in backtraces and profiles.
1269 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1271 * enhancement: symbols are printed using fully qualified names in several
1272 error and warning messages which are often associated with package
1273 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1274 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1275 thanks to Andrew Golding)
1276 * bug fix: reading /proc files on Linux works. (lp#425199)
1277 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1279 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1280 breaking code that tried to write the value of a printer control variable.
1281 (lp#581564, thanks to Stas Boukarev)
1282 * bug fix: WRITE compiler macro did not handle output stream designators
1283 correctly. (lp#598374, thanks to Stas Boukarev)
1284 * bug fix: better availability of names of foreign functions in backtraces
1285 on Linux. (lp#626962, thanks to Stas Boukarev)
1286 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1287 lp#627581, thanks to Josh Elsasser and Jim Wise)
1288 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1289 thanks to Josh Elsasser)
1290 * bug fix: using aliases for builtin classes as defmethod specializers
1291 without adding DEFTYPEs for them works. (lp#618387)
1292 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1294 * bug fix: legally dynamic-extent lists and vectors used as
1295 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1296 * bug fix: inline-expansion creating references to dead lambda-variables
1297 (lp#454681, thanks to Alexey Dejneka)
1298 * bug fix: better error message for bogus numerical arguments to RANDOM.
1299 (lp#598986, thanks to Stas Boukarev)
1300 * bug fix: the compiler occasionally inlined references from incompatible
1301 environments occurs. (lp#308951)
1302 * bug fix: the compiler threw an error when trying to compile a local
1303 function (labels or flet) known to take a specialized complex argument.
1304 (not in launchpad, reported by sykopomp in #lispgames)
1305 * bug fix: package-locks failed to protect against compile-time effects of
1306 DEFUN when the symbol previously had a macro definition. (lp#576637)
1307 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1308 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1309 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1310 * bug fix: evaluation in debugger REPL works using the global context when
1311 in frames that do not have sufficient debug information.
1312 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1314 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1316 * bug fix: interrupt taking longer than the requested period caused SLEEP
1317 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1319 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1321 ** Cross-compilation host is now specified to make.sh using
1322 command-line argument --xc-host=<command> instead of a positional
1323 argument. (thanks to Daniel Herring)
1324 ** Install location can be specified to make.sh using command-line
1325 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1326 * optimization: The default implementation of
1327 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1328 * enhancement: Explicit memory barrier operations are now available for use
1329 by multithreaded code. See documentation for details.
1330 * enhancement: Experimental support for threading on Linux/PPC.
1331 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1332 * bug fix: EXPT signals an error if first argument is a zero and second
1333 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1334 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1335 (lp#576594, thanks to Roman Marynchak)
1336 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1337 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1339 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1340 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1341 cached, leading to many fewer expensive calls to
1342 COMPUTE-APPLICABLE-METHODS.
1343 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1344 CLASS argument, search for and call an appropriate optimized ctor function
1346 * bug fix: WRITE always returns the correct value.
1348 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1349 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1350 * bug fix: Name conflicts between symbols passed as arguments to a single
1351 call to IMPORT no longer add multiple symbols with the same name to the
1352 package (detectable via DO-SYMBOLS).
1353 * bug fix: support building without the dlshim on darwin x86 and x86-64
1355 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1357 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1358 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1360 * bug fix: linkage-table entries on PPC now no longer overflow their
1361 space allocation (potentially causing crashes if they are written out
1363 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1364 platforms, preventing the GC from seeing stale pointers on the control
1365 stack in subsequent GCs (which would, and does, break invariants).
1366 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1367 * bug fix: Literal characters with code points greater than about 32767
1368 now work on PPC UNICODE builds.
1369 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1370 high order bits are explicitly cleared out. In some contrived situations,
1371 this could lead to wrong results in mixed real/complex float arithmetic.
1372 * bug fix: Fix function/macro redefinition warnings when building with
1373 clisp. (lp#576787, thanks to Josh Elsasser)
1374 * new platform: experimental support for ppc/openbsd (thanks to Josh
1376 * bug fix: Floating-point traps now work on ppc/linux.
1378 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1379 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1380 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1381 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1382 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1383 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1384 SB-THREAD:GRAB-MUTEX.
1385 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1386 contain additional data structures and tools for concurrent programming;
1387 at the moment it contains a lock-free queue, and a lock-free mailbox
1389 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1390 GET-MUTEX but takes &key rather than &optional parameters. Also added
1391 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1393 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1394 SB-THREAD:WAIT-ON-SEMAPHORE.
1395 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1397 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1398 conditions to defer the deadline for forever.
1399 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1401 * enhancement: errors from NO-APPLICABLE-METHOD and
1402 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1403 generic function call.
1404 * enhancement: SB-BSD-SOCKET improvements
1405 ** sockets and socket streams now have a more informative printed
1406 representation based on the corresponding SOCKET-NAME and
1408 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1410 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1411 CL:CLOSE when appropriate, and no longer disassociates the stream
1412 from the socket if close failed. (lp#543951)
1413 * improvements to the instrumenting profiler
1414 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1415 ** optimization: counters no longer use locks for the overflow mode.
1416 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1417 incurred an off-by-one miscount.
1418 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1419 * enhancement: improved DEFMETHOD pretty-printing.
1420 * enhancement: perform range reduction when arguments are too large for
1421 x87's transcendentals (instead of returning 0). (lp#327192)
1422 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1423 some of CL-PPCRE's macros. (lp#570079)
1424 * enhancement: our machine code is slightly less hostile to valgrind on
1426 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1427 to Robert Swindells and Aleksej Saushev)
1428 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1429 * bug fix: a rare case of startup-time page table corruption.
1430 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1431 to timeouts could be left in an inconsistent state.
1432 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1433 * bug fix: misoptimization of multiplication by one in
1434 (SB-C::FLOAT-ACCURACY 0) policies.
1435 * bug fix: miscounts in SB-PROFILE.
1436 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1437 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1438 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1439 up itself" (March 2010) for further details.
1440 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1441 against length of the list if the element is found before the specified
1442 END is reached. (thanks to Alec Berryman, lp#554385)
1443 * bug fix: errors signalled during package graph modification no longer
1444 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1445 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1446 :SB-DOC feature. (lp#552564)
1447 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1448 * bug fix: more robust runtime executable path detection. (lp#375549)
1449 * bug fix: GCD always returns positive values. (lp#413680)
1450 * bug fix: Converting division to multiplication by reciprocal handles
1452 * bug fix: We were too eager in eliding range reduction tests on x87.
1453 The maximal magnitude is 2^63, not 2^64.
1454 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1456 * bug fix: Maybe restore buildability on Alpha.
1457 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1459 * bug fix: RANDOM-STATE can be printed readably again.
1460 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1461 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1462 types) could result in type mismatches during compilation.
1464 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1465 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1466 stack frame thrown from.
1467 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1468 compiler optimization qualities inside dynamic extent of its body.
1469 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1470 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1472 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1473 constraint propgation, allowing better compilation eg. when used to
1474 access structures with WITH-SLOTS. (lp#520366)
1475 * optimization: the compiler is now more aware of the type of the underlying
1476 storage vector for multidimensional simple arrays resulting in better code
1477 for accessing such arrays.
1478 * optimization: passing NIL as the environment argument to TYPEP no longer
1479 inhibits optimizing it. (lp#309788)
1480 * optimization: more efficient register usage when handling single-float
1481 arguments on x86-64. (thanks to Lutz Euler)
1482 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1483 pre-allocated temporary vectors. (lp#496249)
1484 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1485 in :INITIAL-CONTENTS. (lp#523612)
1486 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1487 functions. (lp#524707)
1488 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1489 WITH-SLOTS usages during compilation.
1490 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1491 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1492 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1493 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1494 instruction (tested on x86oid linux with ud2-breakpoints).
1495 * bug fix: slam.sh now works on win32.
1496 * bug fix: better differences of numeric types. (lp#309124)
1497 * bug fix: arrays declared intersection and union types can have their
1498 upgraded element type derived. (lp#316078)
1499 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
1500 threads started during profiling. (lp#472499)
1501 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
1503 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
1504 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
1505 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
1506 values instead of signaling an error. (lp#309093)
1507 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
1509 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
1510 declarations (lp#497321)
1511 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1512 and failed to detect circular lists (lp#452008)
1513 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1515 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1516 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1517 due to it, so that handlers can run.
1518 * bug fix: reparsing undefined types if they have become defined since
1519 parsing. (lp#309128)
1520 * bug fix: missing &REST type in a proclamation for a function with both
1521 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1522 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1523 expanded calls (lp#542174)
1524 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1525 than just at toplevel form.
1527 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1528 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1529 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1530 but work on type specifiers.
1531 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1532 to name a type specifier.
1533 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1534 specifier is valid where "valid" basically means "would be accepted as
1535 second argument of TYPEP".
1536 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1537 returns the function's declared, or derived FTYPE.
1538 * new feature: SB-POSIX now supports accessing the d_ino member of
1539 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1540 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1541 provide for seeding a RANDOM-STATE object with user-provided data or
1542 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1543 attempt to initialize the returned state from the operating system's
1544 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1545 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1546 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1547 * bug fix: Fix grammar and style issues for the docstrings of
1548 printer-related variables and functions. (Thanks to mon_key; launchpad
1550 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1552 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1553 in a row even though a handler defered the deadline long into the
1555 * bug fix: A deadline handler was run without interrupts enabled for a
1556 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1557 in infinitely spinning, non-killable threads.
1558 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1559 before reaching the erring stack frame.
1560 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1561 real power. (launchpad bug lp#525949)
1562 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1563 GENCGC platforms. (launchpad bug lp#529014)
1564 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1565 (launchpad bug lp#525916)
1566 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1567 (Thanks to Robert Goldman)
1569 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1570 * optimization: ROUND with a single single-float or double-float argument
1571 is properly inlined when possible.
1572 * optimization: Slightly better code is generated for integer<->float
1573 conversions and for single-float<->double-float conversions on x86-64.
1574 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1575 code for 32-bit and 64-bit rotations on x86-64.
1576 * bug fix: The install script changes the ownership of directories as well
1577 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1578 launchpad bug lp#508485)
1579 * bug fix: TRUNCATE with a single single-float or double-float argument is
1580 properly inlined when possible. (launchpad bug lp#489388)
1581 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1582 no longer causes a compiler error on x86 and ppc.
1583 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1584 always relative to *READTABLE* rather than the passed argument.
1586 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1587 * minor incompatible change: threading support is now enabled by default
1589 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1591 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1592 are now caught and reported just like errors during macroexpansion.
1593 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1594 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1595 * enhancement: ASDF systems can now depends on SB-QUEUE.
1596 * fixes and improvements related to Unicode and external formats:
1597 ** bug fix: error handling and restart usage in the ucs-2 external format
1599 ** there is now an implementation of the ucs-4 external format.
1600 ** the utf-16 and utf-32 external formats are supported.
1601 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1602 in the environment. setenv() and unsetenv() are also provided. (reported by
1603 Fare Rideau; launchpad bug lp#460455)
1604 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1605 loading. This ensures sensible errors for .FASL files from other
1606 implementations on case-insensitive filesystems. (reported by Willem
1607 Broekema; launchpad bug lp#489417)
1608 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1609 Willem Broekema; launchpad bug lp#489698).
1610 * bug fix: some minor code rearrangements to reenable warning-free building
1611 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1612 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1614 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1617 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1618 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1619 * improvement: support O_LARGEFILE access to files larger than 2GB on
1620 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1621 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1622 definitions for methods specializing on the passed class itself.
1623 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1624 definitions for methods specializing on the passed class itself, or on
1626 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1627 about itself during the build (e.g. for M-? in Slime), if this flag is
1628 enabled in customize-target-features.lisp. This will increase the core
1629 size by about 5-6mb, though, so it's mostly interesting to SBCL
1631 * new feature: various GENCGC tuning parameters have been experimentally
1632 documented and exported from SB-EXT. See documentation for details.
1633 * fixes and improvements related to Unicode and external formats:
1634 ** the Unicode character database has been upgraded to the
1635 Unicode 5.2 standard, giving names and properties to a number of new
1636 characters, and providing a few extra characters with case
1638 ** improvement: restarts for providing replacement input/output on coding
1639 errors for fd-stream external formats.
1640 ** improvement: where :<encoding> is a keyword corresponding to an
1641 external format the system supports, it is now possible to specify
1642 (:<encoding> :replacement <character>) as an external format which will
1643 automatically substitute <character> on encoding or decoding errors for
1644 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1646 ** improvement: the file streams underlying the standard streams (such as
1647 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1648 which uses the replacement mechanism to handle encoding errors,
1649 preventing various infinite error chains and unrecoverable I/O
1651 ** minor incompatible change: the utf-8 external format now correctly
1652 refuses to encode Lisp characters in the surrogate range (char-codes
1653 between #xd800 and #xdfff).
1654 ** fix a typo preventing conversion of strings into octet vectors
1655 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1657 ** fix a bug in the octet multibyte handling of decoding errors and the
1658 USE-VALUE restart. (launchpad bug lp#314939)
1659 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1660 restart on fd-stream decoding errors.
1661 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1662 error is near the end of file.
1663 ** fix a double-error case in unibyte octet conversions, when the first
1664 use of USE-VALUE is ignored.
1665 ** fix bugs in handling of undefined code points in unibyte encodings.
1666 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1667 streams after an UNREAD-CHAR.
1668 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1669 object is allocated in a boxed region of dynamic space.
1670 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1671 fork with multiple Lisp threads running is made, instead of going
1672 ahead with unpredictable consequences. (reported by Leslie Polzer)
1673 * bug fix: uses of slot accessors on specialized method parameters within
1674 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1675 error while finalizing the class. This fix may cause classes with slot
1676 accessors to be finalized later than previously. (reported by Lars Rune
1677 Nøstdal; launchpad bug lp#473699)
1678 * bug fix: restore buildability on the MIPS platform. (regression from
1679 1.0.30.38, reported by Samium Gromoff)
1680 * bug fix: inspecting closures is less likely to fail with a type error.
1681 * bug fix: no timer starvation when setting the system clock back.
1682 (launchpad bug lp#460283)
1683 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1684 standard pprint dispatch table as specified by CLHS.
1685 * bug fix: give CLISP a hint about a type declaration to enable it to build
1686 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1688 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1689 (reported by Attila Lendvai; launchpad bug lp#310132)
1690 * bug fix: distinguish in type specifiers between arrays that might be
1691 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1692 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1693 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1694 * bug fix: setting the value of a symbol-macro within a method in the
1695 presence of type declarations works properly again. (reported by Iban
1696 Hatchondo; launchpad bug lp#485019)
1698 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1699 * optimization: faster FIND and POSITION on strings of unknown element type
1700 in high SPEED policies. (thanks to Karol Swietlicki)
1701 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1703 * improvement: better error signalling for bogus parameter specializer names
1704 in DEFMETHOD forms (reported by Pluijzer)
1705 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1707 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1709 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1710 removes previous default initargs (reported by Lars Rune Nøstdal and
1712 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1713 lambda-lists. (reported by Peter Seibel)
1714 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1715 correctly when starting from an executable core without saved runtime
1716 options (reported by Faré Rideau, thanks to Zach Beane)
1717 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1718 an optimization note instead. (reported by Martin Cracauer)
1719 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1720 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1721 new process group if it doesn't need to share stdin with the sbcl
1722 process. (thanks to Leslie Polzer)
1723 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1724 (reported by Stanislaw Halik)
1726 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1727 * improvement: stack allocation is should now be possible in all nested
1728 inlining cases: failure to stack allocate when equivalent code is manually
1729 open coded is now considered a bug.
1730 * improvements related to Unicode:
1731 ** the Unicode character database has been upgraded to the
1732 Unicode 5.1 standard, giving names and properties to a number of new
1733 characters, and providing a few extra characters with case
1735 ** the system now recognizes and produces names for Unicode Hangul
1736 syllable characters.
1737 ** the EBCDIC-US external-format is now supported for octet operations
1738 (as well as for stream operations).
1739 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1740 be used to output toplevel compile-time effects into a separate .CFASL
1742 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1743 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1745 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1747 * optimization: division of floating point numbers by constants uses
1748 multiplication by reciprocal when an exact reciprocal exists.
1749 * optimization: multiplication of single- and double-floats floats by
1750 constant two has been optimized.
1751 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1752 sufficient type information is available. (thanks to Leslie Polzer)
1753 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1754 known structure objects are as efficient as defstruct generated accessors.
1755 * optimization: unused vector creation can now be optimized away.
1756 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1757 * improvement: a STYLE-WARNING is signalled when a generic function
1758 clobbers an earlier FTYPE proclamation.
1759 * improvement: the compiler is able to track the effective type of
1760 generic function across method addition and removal even in the
1761 absence of an explicit DEFGENERIC.
1762 * improvement: DESCRIBE now reports on symbols naming undefined
1763 but assumed or declared function as well.
1764 * improvement: recompilation of systems using SB-GROVEL now works
1765 (thanks to Leslie Polzer)
1766 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1767 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1769 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1770 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1771 well as user defined declaration names.
1772 ** VARIABLE-INFORMATION is now aware of alien variables.
1773 * improvement: improved address space layout on OpenBSD (thanks to Josh
1775 * improvement: pretty-printing of various Lisp forms has been improved
1776 (thanks to Tobias Rittweiler)
1777 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1778 unused were deleted in safe code. (reported by John Fremlin)
1779 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1781 * bug fix: some out-of-line array predicates were missing (reported by
1783 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1785 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1786 (thanks to Larry D'Anna)
1787 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1788 as well. (reported by Josh Elsasser)
1789 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1790 leading to possible attempts to delete the same file twice. See docstring
1791 on DELETE-FILE for details. (reported by John Fremlin)
1792 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1793 designator argument, rather than its truename. (reported by Luis
1795 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1796 information about some array types. (thanks to Luis Oliveira)
1797 * bug fix: moderately complex combinations of inline expansions could
1798 be miscompiled if the result was declared to be dynamic extent.
1799 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1800 form (+ <variable> <integer>) were miscompiled under certain
1802 * bug fix: in some cases no compiler note about failure to stack allocate
1803 was emitted, even if the objects were in fact heap allocated.
1804 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1805 allocation could cause objects users might reasonably expect to
1806 be heap allocated to be stack allocated.
1807 * bug fix: DESCRIBE signalled an error for generic functions under
1808 certain circumstances. (thanks to Leslie Polzer)
1809 * bug fix: Fixed spelling of an error message.
1811 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1812 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1813 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1814 of SB-THREAD:THREAD-ERROR-THREAD.
1815 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1816 * new feature: docstrings for local and anonymous functions are no longer
1817 discarded. (thanks to Leslie Polzer)
1818 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1819 values in other threads.
1820 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1821 about object allocation.
1822 * optimization: division of a real float by a complex float is implemented
1823 with a specialised code sequence.
1824 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1825 keywords is an order of magnitude faster.
1826 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1827 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1828 methods, and similarly for non-standard metaclass classes as long as there
1829 are no methods additional on MAKE-INSTANCE.
1830 * optimization: more efficient type-checks for FIXNUMs when the value
1831 is known to be a signed word on x86 and x86-64.
1832 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1833 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1835 * optimization: compiler is smarter about delegating argument type checks to
1837 * optimization: several character functions are now compiled somewhat more
1838 efficiently. (reported by Lynn Quam)
1839 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1840 * improvement: less unsafe constant folding in floating point arithmetic,
1841 especially for mixed complex/real -float operations.
1842 * optimization: constant double and single floats are stored in native
1843 unboxed format on x86[-64].
1844 * optimization: smarter code for arithmetic operations with constant floats,
1845 complex floats, or integers on x86[-64].
1846 * optimization: smarter code for conjugate/multiplication of float complexes
1847 and abs/negate of floats on x86-64.
1848 * optimization: more efficient complex float and real float operations on
1850 * improvement: complex float division is slightly more stable.
1851 * improvement: DESCRIBE output has been reworked to be easier to read and
1852 contains more pertinent information.
1853 * improvement: failure to provide requested stack allocation compiler notes
1854 provided in all cases (requested stack allocation not happening without a
1855 note being issued is now considered a bug.)
1856 * bug fix: SB-POSIX exports the documented types and functions
1857 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1858 types. (reported by "abhi")
1859 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1860 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1861 (thanks to Paul Khuong)
1862 * bug fix: looping around HANDLER-CASE could silently consume stack space
1863 on each iteration. (reported by "foobar")
1864 * bug fix: better error signalling when calls to functions seeking elements
1865 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1866 (reported by Tobias Rittweiler)
1867 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1868 directory components now works as it used to. (various prolems reported by
1869 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1870 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1871 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1872 * bug fix: bogus undefined variable warnings from fopcompiled references to
1873 global variables. (thanks to Lars Rune Nøstdal)
1874 * bug fix: foreign function names should now appear in backtraces on
1875 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1876 * bug fix: SETF compiler macro documentation strings are not discarded
1878 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1879 (thanks to Alex Plotnick)
1880 * bug fix: SLEEP accepts large integer arguments, truncating them to
1881 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1882 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1883 * bug fix: compiler notes for expensive slot type checks could be emitted
1884 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1886 changes in sbcl-1.0.29 relative to 1.0.28:
1887 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1888 https://bugs.launchpad.net/sbcl
1889 Bugs can be reported directly there, or by sending email to
1890 sbcl-bugs@lists.sourceforge.net
1891 (no subscription required.)
1892 * minor incompatible change: under weak type checking policy integer
1893 types are weakened less aggressively.
1894 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1895 allowed to return, which causes SBCL to quit with exit status 0. Previously
1896 if the function returned with a small integer return value, that value
1897 was accidentally reused as the exit status.
1898 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1899 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1900 :HASH-FUNCTION argument. Refer to user manual for details.
1901 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1903 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1904 microseconds since the Unix epoch on all platforms.
1905 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1906 allows the compiler to safely elide boundedness checks for special
1908 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1909 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1910 efficiency measure for threaded platforms, but also valueable in
1912 * new feature: UNC pathnames are now understood by the system on Windows.
1913 * optimization: the compiler uses a specialized version of FILL when the
1914 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1916 * optimization: accesses to potentially non-simple arrays where element type
1917 is known are 50% faster.
1918 * optimization: compiler now generates faster array typechecking code.
1919 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1921 * optimization: multidimensional array accesses in the absence of type
1922 information regarding array rank are approximately 10% faster due to
1923 open coding of ARRAY-RANK.
1924 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1925 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1927 * optimization: result of call to VECTOR can now be stack allocated.
1928 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1929 as long as the resulting array is one-dimensional and has a known
1930 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1931 length of the list matches the known length of the vector does not
1932 allocate the list as an intermediate step. Ditto for VECTOR and simple
1934 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1935 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1936 known element type, and is known to be simple and one dimensional.
1937 * improvement: SBCL now emits a compiler note where stack allocation was
1938 requested but could not be provided (not in all cases, unfortunately)
1939 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1940 * improvement: pretty-printing loop has been implemented properly. (thanks
1941 to Tobias Rittweiler)
1942 * documentation: CLOS slot typechecing policy has been documented.
1943 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1944 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1945 pointer, leading to memory faults. (thanks to Bart Botta)
1946 * bug fix: better floating point exception handling on x86/OpenBSD.
1947 (thanks to Josh Elsasser)
1948 * bug fix: exit status from QUIT when called under --script was lost
1949 (reported by Hubert Kauker)
1950 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1951 same implementation of FILL to initialize the array, even if a more
1952 efficient one was available (reported by Stas Boukarev, thanks to
1954 * bug fix: potential miscompilation of array stack allocation on x86 and
1955 x86-64. (reported by Time Tossavainen)
1956 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1957 result in their subforms being treated as top level forms. (reported by
1959 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1960 than a machine register could leave garbage in the high bits of the
1961 result register (bug 316325).
1962 * bug fix: disable address space randomization Linux/x86-64 as well,
1963 not just x86-64. (reported by Ken Olum)
1964 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1965 generate incorrect code.
1966 * bug fix: #201; type inference for CONS and ARRAY types could derive
1967 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1968 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1969 could not be assigned to or bound with PROGV. (reported by Lorenz
1971 * bug fix: the value of CL:- in the inspector was the previous expression
1972 evaluated rather than the expression being evaluated.
1973 * bug fix: constants can no longer be locally declared special.
1974 * bug fix: signals delivered to threads started from foreign land (read:
1975 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1976 thread by blocking all signals and resignalling.
1977 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1978 from :INITFORM, if any.
1980 changes in sbcl-1.0.28 relative to 1.0.27:
1981 * a number of bugs in cross-compilation have been fixed, with the ultimate
1982 result that building under (at least) clisp should be much more reliable.
1983 * minor incompatible changes: echo-streams now propagate unread-char to the
1984 underlying input stream, and no longer permit unreading more than one
1986 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1987 frames, allowing for instance more reliable backtraces.
1988 * improvement: the debugger REPL can now reference lexical variables
1989 by name directly for code compiled with (DEBUG 3).
1990 * improvement: errors from malformed declarations now have better source
1991 paths associated with them. (thanks to Tobias Rittweiler)
1992 * optimization: faster local calls on x86/x86-64
1993 * bug fix: some error messages for out-of-bound array indexes confused the
1994 index and the bound. (thanks to Stas Boukarev)
1995 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1997 * bug fix: running regressions tests in shells without OSTYPE set now works.
1998 (reported by Harald Hanche-Olsen)
1999 * bug fix: more robust static space exhaustion signalling from
2000 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
2001 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
2002 docstring away instead of storing it under names such as (LAMBDA (X)).
2003 (reported by Leslie Polzer)
2004 * bug fix: timers could go off in the wrong order, be delayed indefinitely
2005 (thanks to Ole Arndt for the patch)
2006 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
2007 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
2008 potentially-invalid effective methods in its cache.
2009 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
2010 instances as well (thanks to Paul Khuong)
2011 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
2012 SB-POSIX:WAITPID and their C equivalents.
2013 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
2015 changes in sbcl-1.0.27 relative to 1.0.26:
2016 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
2017 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
2018 * improvement: the system either recovers from stack exhaustion or dies
2019 properly as opposed to leaving the user uncertain of whether the handler
2020 trampled on some random memory next to the stack or having to rely on
2021 --lose-on-corruption (which is still a good idea to use in production
2022 because stack exhaustion can happen in signal handlers which will likely
2024 * bug fix: fix gc related interrupt handling bug on ppc (regression from
2025 1.0.25.37, reported by Harald Hanche-Olsen)
2026 * bug fix: work around signal delivery bug in darwin (regression from
2027 1.0.25.44, reported by Sidney Markowitz)
2028 * bug fix: fix ERROR leaking memory (reported by David Thompson)
2030 changes in sbcl-1.0.26 relative to 1.0.25:
2031 * incompatible change: an interruption (be it a function passed to
2032 INTERRUPT-THREAD or a timer function) runs in an environment where
2033 interrupts can be enabled. The interruption can use
2034 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
2035 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
2036 potentially running out of stack. Keep in mind that in the absence
2037 of WITHOUT-INTERRUPTS some potentially blocking operation such as
2038 acquiring a lock can enable interrupts.
2039 * incompatible change: GC-OFF and GC-ON are removed, as they were
2040 always unsafe. Use WITHOUT-GCING instead.
2041 * new feature: runtime option --disable-ldb
2042 * new feature: runtime option --lose-on-corruption to die at the
2043 slightest hint of possibly non-recoverable errors: running out of
2044 memory, stack, alien stack, binding stack, encountering a memory
2045 fault, etc. In the absence of --lose-on-corruption a warning is
2047 * enhancement: detect binding stack exhaustion
2048 * enhancement: detect alien stack exhaustion on x86/x86-64
2049 * improvement: generally more stable and reliable interrupt handling
2050 * improvement: there is a per thread interruption queue,
2051 interruptions are executed in order of arrival
2052 * improvement: a repeating timer reschedules itself when the it has
2053 finished, but expiration times are spaced equally. If an
2054 expiration time is in the past it will trigger after a short grace
2055 period that may give a chance to other things to run.
2056 * optimization: slightly faster gc on multithreaded builds
2057 * optimization: faster WITHOUT-GCING
2058 * bug fix: when JOIN-THREAD signals an error, do it when not holding
2059 important locks so that the debugger/handler doesn't produce
2060 recursive errors or deadlock.
2061 * bug fix: real-time signals are not used anymore, so no more
2062 hanging when the system wide real-time signal queue gets full.
2063 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
2065 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
2066 * bug fix: fix random memory faults related to interrupts on alpha
2067 * bug fix: fix random memory faults related to interrupts on sparc
2068 * bug fix: fix deadlocks related to starting threads
2069 * bug fix: fix deadlines on locks on futex platforms
2070 * bug fix: restore errno in signal handlers
2071 * bug fix: fix deadlocks related to hash tables
2072 * bug fix: fix deadlocks in pcl
2074 changes in sbcl-1.0.25 relative to 1.0.24:
2075 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
2076 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
2077 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
2078 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
2079 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
2080 better name and does not return values so stale on multiprocessor systems.
2081 Also, HOLDING-MUTEX-P was added for about the only sane usage of
2083 * improvement: unithread builds keep track of MUTEX-VALUE.
2084 * improvement: reading from a TWO-WAY-STREAM does not touch the output
2085 stream anymore making it thread safe to have a concurrent reader and
2086 a writer, for instance, in a pipe.
2087 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
2088 arguments, making compiler-macros for SETF-functions able to inspect
2089 their constant arguments.
2090 * improvement: COMPILE-FILE reports times with millisecond accuracy
2091 (thanks to Luis Oliveira)
2092 * optimization: CHAR-CODE type derivation has been improved, making
2093 TYPEP elimination on subtypes of CHARACTER work better. (reported
2094 by Tobias Rittweiler, patch by Paul Khuong)
2095 * bug fix: setting alien structure fields of type struct by value now
2096 computes the right offset for the memory copy.
2097 * bug fix: compilation problem involving inlined calls to aliens with
2098 result type VOID. (reported by Ken Olum)
2099 * bug fix: #235a; sequential inline expasion in different policies no
2100 longer reuses the functional from the previous expansion site.
2101 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
2102 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
2103 * bug fix: named ENUMs in multiply-referenced alien record types no longer
2104 cause an implied type redefinition. Regression from 1.0.21.29.
2105 * bug fix: sign-extension of small signed return values now works with C
2106 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
2107 * improvements to the Windows port:
2108 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
2109 Westfold, thanks to Rudi Schlatte)
2111 changes in sbcl-1.0.24 relative to 1.0.23:
2112 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
2113 vector of a multidimensional SIMPLE-ARRAY.
2114 * new feature: the system now signals a continuable error if standard
2115 readtable modification is attempted. (thanks to Tobias Rittweiler)
2116 * new feature: DIRECTORY has been extended with a non-standard keyword
2117 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
2118 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
2119 has been robustified and documented better. (thanks to Robert Goldman)
2120 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
2121 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
2122 * tradeoff: constant FORMAT control strings are now compiled unless
2123 SPACE > SPEED (previously only when SPEED > SPACE.)
2124 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
2126 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
2128 * bug fix: lexical type declarations are now correctly reported by
2129 SB-CLTL2. (reported by Larry D'Anna)
2130 * bug fix: STRING-TO-OCTETS did not handle :START properly when
2131 using UTF-8 as external format. (thanks to Luis Oliveira)
2132 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
2133 are signalled correctly. (thanks to Stas Boukarev)
2134 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
2135 designator. (thanks to Tobias Rittweiler)
2136 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
2137 designator, and returns T instead of the function. (thanks to
2139 * bug fix: direct superclasses of STANDARD-CLASS and
2140 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
2141 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
2142 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
2143 when no class with the named slot yet exists no longer causes a
2144 compile-time style-warning.
2145 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
2146 in safe code. (reported by Didier Verna)
2147 * bug fix: #430; nested structure constructors can stack allocate.
2148 * bug fix: on some 64-bit platforms dynamic space size was truncated
2149 to #xffff0000 bytes. (reported by Benjamin Lambert)
2150 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
2151 REPL unusable. (reported by Daniel Herring)
2152 * bug fix: return values of READ-SEQUENCE did not take :START into
2153 account on file streams, regressions since 1.0.12.22. (reported by
2154 Thomas Russ, patch by Paul Khuong)
2155 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
2156 method specializer used to confuse permuation vector optimization.
2157 * bug fix: system inserted bogus implicit type declarations for local
2158 special variables in DEFMETHOD bodies.
2159 * bug fix: #354; duplicated frames in backtraces due to
2160 non-tail-call-optimized XEPs to functions with return type NIL
2162 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
2163 initializes structure object slots according to DEFSTRUCT initforms,
2164 and DEFSTRUCT forms :INCLUDEind structure classes defined using
2165 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
2166 (reported by Bruno Haible and Stephen Wilson)
2167 * bug fix: #395; fill-pointer output streams used now support
2168 element-type BASE-CHAR as well.
2169 * bug fix: compiler error when attempting to derive return value of
2170 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
2172 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
2174 * bug fix: Mac OS X binaries should now be portable between Leopard
2177 changes in sbcl-1.0.23 relative to 1.0.22:
2178 * enhancement: when disassembling method functions, disassembly
2179 for the associated fast function is also produced.
2180 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
2182 * optimization: printing with *PRINT-PRETTY* true is now more
2183 efficient as long as the object being printed doesn't require
2184 special handling by the pretty printer.
2185 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
2186 now interact correctly with type declarations.
2187 * partial bug fix: PCL detects infinite recursion during wrapper
2188 validation. (thanks to Attila Lendvai)
2189 * bug fix: #426; nested function calls are inlined properly.
2190 Previously if FOO was an inline function, in calls of the form
2191 (FOO (FOO ...)) the outer call was not inlined.
2192 * bug fix: long long arguments passed in registers to alien
2193 functions on PowerPC Linux and NetBSD are now handled correctly
2194 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
2196 changes in sbcl-1.0.22 relative to 1.0.21:
2197 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
2198 for the shared object in the current directory, but passes the native
2199 namestring of the designated pathname to the operation system's shared
2200 object loading function as-it.
2201 * minor incompatible change: --disable-debugger toplevel option now takes
2202 effect before processing of initialization files and --eval or --load
2204 * new feature: new commandline argument: --script, which supports
2205 shebang lines. See documentation for details. (based on work by
2207 * new feature: SAVE-LISP-AND-DIE can save current values of
2208 --dynamic-space-size and --control-stack-size in the executable core,
2209 causing it to skip normal runtime option processing. See documentation
2210 for details. (thanks to Zach Beane)
2211 * enhancement: inoccous calls to EVAL or generic functions dispatching
2212 on subclasses of eg. STREAM no longer cause compiler notes to appear.
2213 * enhancement: the system no longer resignals errors from --load and
2214 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
2215 associated with the original error to be lost. (thanks to Ariel
2217 * enhancement: :DONT-SAVE keyword argument has been added to
2218 LOAD-SHARED-OBJECT for controlling interaction with
2219 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
2220 the effects of an earlier LOAD-SHARED-OBJECT call.
2221 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
2222 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
2223 provided. (reported by Cedric St-Jean)
2224 * bug fix: circularity handling in the reader did not treat raw
2225 structure slots correctly. (reported by Cedric St-Jean)
2226 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
2227 file descriptors when there were none.
2228 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
2229 was broken. (reporteed by Willem Broekema)
2230 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
2231 pathnames without a directory.
2232 * bug fix: COMPILE-FILE did not warn about undefined variable
2233 references at toplevel, and LOAD of the resulting fasl did
2234 not signal an error.
2235 * bug fix: functions with non-required arguments used to end up with
2236 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
2237 * bug fix: redefining a function with non-required arguments didn't
2238 update the system's knowledge about its call signature properly.
2239 * bug fix: fixed #431; incompatible alien record type redefinitions
2240 are detected and handled. (reported by Neil Haven)
2241 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
2242 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
2244 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2245 after alien stack frames.
2246 * bug fix: strings passed to mk{s,d}temp lacked null termination
2248 changes in sbcl-1.0.21 relative to 1.0.20:
2249 * new feature: the compiler is able to track the effective type of a
2250 generic function across method addition and removal.
2251 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2252 appropriately typed structure slots without locking.
2253 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2254 information like those gathered by TIME using a programming-friendly
2256 * new feature: TIME reports time taken even if the form performs a
2257 non-local transfer of control.
2258 * enhancement: reduced conservativism on GENCGC platforms: on
2259 average 45% less pages pinned (measured from SBCL self build).
2260 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2261 mutate constant symbols or violate declaimed type of the symbol.
2262 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2263 sleeping on the semaphore in heavily contested semaphores.
2264 * bug fix: semaphores and condition variables were not interrupt
2266 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2267 owned by other threads anymore.
2268 * bug fix: FIND on lists called KEY outside the specified
2269 subsequence. (reported by budden)
2270 * bug fix: LOG doesn't use single-float intermediate results when
2271 given mixed integer and double-float arguments, leading to better
2272 precision. (reported by Bob Felts)
2273 * bug fix: LOG with base zero returned values of inconsistent type.
2275 changes in sbcl-1.0.20 relative to 1.0.19:
2276 * minor incompatible change: OPTIMIZE qualities
2277 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2278 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2279 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2280 * documentation: some slot access efficiency guidelines have been
2281 added to the user manual.
2282 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2283 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2284 as ASSOC and MEMEBER.
2285 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2286 to more efficient EQ-comparison versions more often.
2287 * optimization: enhanced derivation of DOLIST iteration variable type
2289 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2291 * optimization: runtime lookup of function definitions can be
2292 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2293 * optimization: compiler is able to derive the return type of
2294 (AREF (THE STRING X) Y) as being CHARACTER.
2295 * optimization: CLRHASH on empty hash-tables no longer does pointless
2296 work. (thanks to Alec Berryman)
2297 * optimization: REPLACE deftransforms don't punt when :START1 or
2299 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2300 no longer emits a code deletion note. (reported by Andrew
2302 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2303 functions with an odd number of &OPTIONAL arguments, a &REST
2304 argument, and one or more &KEY arguments at the call site.
2305 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2306 arguments appeared at call sites as well.
2307 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2308 READ-LINE &co can no longer read from them afterwards. (reported
2310 * bug fix: fixed #427: unused local aliens no longer cause compiler
2311 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2313 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2314 alien-stack leakage. (reported by Andy Hefner)
2315 * bug fix: PROGV signals an error when an attempt to violate declared
2316 type of a variable or bind a constant is made.
2317 * bug fix: SET signals an error when an attempt to violate declared
2318 type of a variable is made.
2319 * bug fix: restart computation during the execution of a restart
2320 test function no longer causes infinite recursion. (reported by
2322 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2323 signals an error. (thanks to Pierre Mai)
2324 * bug fix: EXPORT left symbol unexported in conflict situations.
2325 (thanks to Michael Weber)
2326 * bug fix: correctly handle name conflicts involving CL:NIL.
2327 (thanks to Michael Weber)
2328 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2329 conflicts arising from USEing package with conflicting symbols
2330 correctly. (thanks to Michael Weber)
2332 changes in sbcl-1.0.19 relative to 1.0.18:
2333 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2334 warnings that go otherwise unhandled will be muffled if they are
2335 of the type that's the value of this variable.
2336 * optimization: stack allocation is slightly more efficient on x86
2338 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2339 where a raw slot always is initialized using the initform whose
2340 type is not know sufficiently well a compile-time are now compiled
2341 correctly. (reported by John Morrison)
2342 * bug fix: compiler no longer makes erronous assumptions in the
2343 presence of non-foldable SATISFIES types.
2344 * bug fix: stack analysis missed cleanups of dynamic-extent
2345 arguments in non-let-converted calls to local functions.
2346 * improvements to the Windows port:
2347 ** adjusted address spaces for building on both Win32 and
2348 Win64. (thanks for John Connors)
2349 * fixed some bugs revealed by Paul Dietz' test suite:
2350 ** interval arithmetic during type derivation used inexact integer
2351 to single-float coercions.
2352 ** arithmetic operations involving large integers and single
2353 floats give the same results in compiled and interpreted code.
2354 ** deriving the result type of COERCE no longer signals an error
2355 if the derived type of the second argument is a MEMBER type
2356 containing invalid type specifiers.
2357 ** ADJOIN with constant NIL as second argument works correctly.
2358 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2360 changes in sbcl-1.0.18 relative to 1.0.17:
2361 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2362 profiles only the current thread.
2363 * minor incompatible change: changes to SYMBOL-VALUE of constants
2364 defined with DEFCONSTANT now signal an error.
2365 * enhancement: SB-SPROF now has support for wallclock profiling,
2366 and is also able to profile specific threads. REPORT output
2367 has also additional sorting options.
2368 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2370 * optimization: structure allocation has been improved
2371 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2372 ** out of line constructors are ~10% faster.
2373 ** inline constructors are ~15% faster.
2374 ** inline constructors are capable of dynamic extent allocation
2375 (generally on x86 and x86-64, in some cases on other platforms
2377 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2379 * optimization: file compiler is now able to coalesce non-circular
2380 lists, non-base strings, and bit-vectors. Additionally, constants
2381 are never referenced through SYMBOL-VALUE at runtime.
2382 * optimization: code defining methods on PRINT-OBJECT (and other
2383 generic functions in the COMMON-LISP package) now loads faster.
2384 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2386 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2387 fasl is now deleted. (reported by Attila Lendvai)
2388 * bug fix: READ-LINE always returned NIL for the last line in files.
2389 (reported by Yoshinori Tahara)
2390 * bug fix: more accurate disassembly annotations of foreign function
2391 calls. (thanks to Andy Hefner)
2392 * bug fix: trimming non-simple strings and non-string string
2393 designators when the there is nothing to trim works properly.
2394 (thanks to James Knight)
2395 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2396 (thanks to Travis Cross)
2397 * fixed some bugs revealed by Paul Dietz' test suite:
2398 ** NIL is a valid function name (regression at 1.0.13.38)
2399 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2400 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2401 fill pointers properly (regression at 1.0.12.23)
2402 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2403 displacement indices properly (regression at 1.0.12.23)
2405 changes in sbcl-1.0.17 relative to 1.0.16:
2406 * temporary regression: user code can no longer allocate closure
2407 variable storage on stack, due to bug 419 without explicitly
2408 requesting it. Please consult sbcl-devel for advice if you need to
2409 use this feature in the meanwhile.
2410 * new feature: runtime argument --control-stack-size can be used to
2411 adjust thread default control stack size.
2412 * enhancement: improved TIME output
2413 ** all times are reported using the measured accuracy (milliseconds
2414 for real and GC times, microseconds for everything else.)
2415 ** processor cycle counts on x86 and x86-64.
2416 ** interpreted forms are counted for both evaluator modes.
2417 ** number of lambdas converted by the compiler is reported.
2418 ** CPU percentage report (computed from real and total run time.)
2419 ** more comprehensive run time reporting, using a condenced format
2420 ** interperted form, lambda, and page fault counts are omitted
2422 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2424 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2425 * optimization: two argument forms of LAST are upto ~10% faster
2426 in normal SPEED policies.
2427 * optimization: NCONC no longer needs to heap cons its &REST list
2428 in normal SPEED policies.
2429 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2430 to Sidney Markowitz)
2431 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2432 regression since 1.0.9.1. (thanks to Eric Marsden)
2433 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2434 since 1.0.15.36. (thanks to Paul Khuong)
2435 * bug fix: LAST when always returned the whole list when given a bignum
2436 as the second argument.
2437 * bug fix: dynamic extent allocation of nested lists and vectors
2438 could leak to otherwise accessible parts.
2439 * bug fix: invalid optimization of heap-allocated alien variable
2441 * bug fix: fasl header checking is less vulnerable to different
2442 platform word lengths.
2443 * bug fix: more correct assembler syntax for GNU binutils
2444 2.18.50.0.4 support. (thanks to Marijn Schouten)
2445 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2447 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2448 declarations) successfully. (reported by Attila Lendvai)
2450 changes in sbcl-1.0.16 relative to 1.0.15:
2451 * minor incompatible change: revert the changes to sb-posix's error
2452 signaling added in 1.0.14.
2453 * minor incompatible change: change PROBE-FILE back to returning
2454 NIL whenever we can't get a truename, as was the case before 1.0.14.
2455 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2456 inherits from ERROR instead of just CONDITION.
2457 * new feature: SB-INTROSPECT can provide source locations for instances
2458 as well. (thanks to Tobias Rittweiler)
2459 * optimization: binding special variables now generates smaller code
2460 on threaded platforms.
2461 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2462 and cases where no :TEST is given but the compiler can infer that
2463 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2464 * optimization: better LOGNOT on fixnums.
2465 * optimization: modular arithmetic for a particular requested width
2466 is implemented using a tagged representation unless a better
2467 representation is available.
2468 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2469 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2470 for wellformedness and returns a specialized vector. (reported by
2471 Francois-Rene Rideau)
2472 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2473 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2474 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2475 unscheduling timer at the same time as another timer fires.
2476 * bug fix: don't reschedule timers for dead threads.
2477 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2478 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2479 bogus errors if select() was interrupted.
2480 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2482 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2483 * enhancement: cleaner backtraces for interactive interrupts, as
2484 well as other cases where the interesting frames used to be
2485 obscured by interrupt handling frames.
2486 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2487 now supported, and tracing a whole package using (TRACE "FOO") now
2488 traces SETF-functions as well.
2489 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2490 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2491 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2492 * unreadably printed representation of hash-tables now includes
2494 * bug fix: partially fixed #188: type propagation from assignments
2495 is now more efficient.
2496 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
2497 'DOUBLE-FLOAT) are not flushable.
2498 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
2499 full address of the object, and none of the tag bits.
2500 * bug fix: readably printing hash-tables now respects other printer
2501 control variables. (reported by Cedric St-Jean)
2502 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
2503 keyword with MAKE-HASH-TABLE.
2504 * bug fix: export SB-POSIX:MKSTEMP.
2505 * bug fix: SORT was not interrupt safe.
2506 * bug fix: XREF accounts for the last node of each basic-block as
2508 * bug fix: MAKE-INSTANCE optimizations interacted badly with
2509 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
2510 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2511 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2512 create obsolete instances in the case of redefinition or
2513 obsoletion of a superclass. (thanks to Andy Hefner)
2514 * bug fix: Support for the Alpha architecture has been revived; it had
2515 suffered somewhat from lack of maintenance since sbcl-1.0.
2516 * improvements to the Windows port:
2517 ** The system detects the codepage to use at startup, instead of
2518 using the value from the saved core. (thanks to Kei Suzuki)
2520 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2521 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2522 (see documentation for details.)
2523 * revived support for OpenBSD (contributed by Josh Elsasser)
2524 * partially fixed bug #108: ROOM no longer suffers from occasional
2525 (AVER (SAP= CURRENT END)) failures.
2526 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2527 bodies no longer cause a WARNING to be signalled. (reported by
2529 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2530 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2531 the bug in TRUNCATE.) (reported by Michael Weber)
2532 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2533 no samples. (reported by Andy Hefner)
2534 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2535 no longer appear as (NIL ...) frames in backtraces.
2536 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2537 is now actually exported from SB-EXT as documented. (reported by
2539 * bug fix: sb-aclrepl now correctly understands how to inspect
2540 single-floats on 64-bit platforms where single-floats are not boxed.
2541 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2542 yet been finalized. (reported by Levente Meszaros)
2543 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2544 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2545 SBCL-specific optimize qualities.
2547 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2548 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2549 an executable in the search path, and does so in the child
2550 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2551 been removed; it can be found in the CVS history, for somebody who
2552 needs that search behavior (see the manual).
2553 * minor incompatible change: compiler policy re. weakening type
2554 checks has changed: now type checks are weakened only if SAFETY < 2
2556 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2557 unparsing of directory pathnames as files. Analogously,
2558 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2559 filename to parse into a directory pathname.
2560 * enhancement: implicit generic function creation now signals a
2561 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2562 users can bind handlers for and muffle around calls to LOAD.
2563 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2564 to be used (using the default stream external format), and allows
2565 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2566 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2567 strings and vectors whose element-type or simplicity is not fully
2568 known at compile-time.
2569 * optimization: STRING-TRIM and related functions no longer allocate
2570 a new string when no trimming needs to be performed. These functions
2571 are also faster than before when the input string has been declared
2573 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2574 * optimization: READ-LINE is significantly faster for files containing
2576 * optimization: non-open coded uses of character comparison operators
2577 (e.g. char=) no longer cons when called with more than one parameter
2578 on platforms supporting dynamic-extent allocation.
2579 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2580 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2581 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2583 * bug fix: some sequence functions elided bounds checking when
2585 * bug fix: too liberal weakening of union-type checks when SPEED >
2587 * bug fix: more bogus fixnum declarations in ROOM implementation
2590 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2591 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2592 :SYNCHRONIZED argument, which makes the hash-table safe for
2593 concurrent accesses (but not iteration.) See also:
2594 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2595 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2596 * optimization: CONCATENATE on strings is an order of magnitude faster
2597 in code compiled with (> SPEED SPACE).
2598 * optimization: SUBSEQ is ~50% faster on lists.
2599 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2600 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2601 END is smaller then START.
2602 * bug fix: SB-PROFILE will no longer report extra consing for nested
2603 calls to profiled functions.
2604 * bug fix: ROOM implementation had bogus fixnum declarations which
2605 could cause type-errors when calling ROOM on large images.
2606 * bug fix: if file compilation is aborted, the partial fasl is now
2607 deleted, and COMPILE-FILE returns NIL as the primary value.
2608 * bug fix: number of thread safety issues relating to SBCL's internal
2609 hash-table usage have been fixed.
2610 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2611 be returned from its body when the values were being returned
2612 using unknown-values return convection and the W-P-O was wrapped
2613 inside an UNWIND-PROTECT.
2614 * bug fix: sb-posix should now compile again under Windows, enabling
2615 slime to work again.
2617 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2618 * incompatible change: hash-table accessor functions are no longer
2619 automatically protected by locks. Concurrent accesses on the same hash-table
2620 from multiple threads can give inconsistent results or even corrupt the
2621 hash-table completely. Multi-threaded applications should do their own
2622 locking at the correct granularity. In the current implementation it is
2623 still safe to have multiple readers access the same table, but it's not
2624 guaranteed that this property will be maintained in future releases.
2625 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2626 and will signal an error at runtime.
2627 * enhancement: SB-THREAD package now exports a semaphore interface.
2628 * enhancement: CONS can now stack-allocate on x86 and
2629 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2631 * enhancement: nested lists can now be stack allocated on
2632 platforms providing stack allocation support.
2633 * enhancement: dynamic-extent support has been extended to support
2634 cases where there are multiple possible sources for the stack
2636 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2637 if the mutex is uncontested on Linux.
2638 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2639 as specified by the CLHS. (thanks to Tobias Rittweiler)
2640 * bug fix: NaN comparison now works on x86-64.
2641 * bug fix: CLOSE :ABORT T on a stream with pending output now
2643 * bug fix: instances of non-standard metaclasses using standard
2644 instance structure protocol sometimes missed the slot type checks
2646 * bug fix: known functions can be inlined in high-debug code.
2648 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2649 * minor incompatible change: the MSI installer on Windows no longer
2650 associates .lisp and .fasl files with the installed SBCL.
2651 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2652 on Windows. (thanks to Luis Oliviera)
2653 * new feature: SB-CLTL2 contrib module now implements
2654 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2655 * optimization: scavenging weak pointers is now more efficient,
2656 requiring O(1) instead of O(N) per weak pointer to identify
2657 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2658 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2659 method bodies using constant slot-names when the first argument is
2660 a specializer parameter for the method.
2661 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2662 names, when the class of the instance is a direct instance
2663 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2664 as slow as the constant slot-name case.)
2665 * optimization: member type construction is now O(N) instead
2667 * optimization: UNION and NUNION are now O(N+M) for large
2668 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2670 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2671 now more readable in environments like Slime which display it.
2672 (thanks to Tobias C. Rittweiler)
2673 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2674 was able to infer the correct argument type for the object on which
2675 the CAS operation was being performed.
2676 * bug fix: copy propagation interfered with parallel assignment
2677 semantics in local calls. (reported by Paul Khuong)
2678 * bug fix: the signed modular fixnum shift compiled to wrong code on
2679 x86 and x86-64. (spotted by a slight modification to some of
2682 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2683 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2684 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2685 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2687 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2688 and generic function now print the object identity for anonymous
2689 instances. (thanks to Attila Lendvai)
2690 * enhancement: as an extension to MOP, SBCL now supports SETF of
2691 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2692 (thanks to Attila Lendvai)
2693 * enhancement: sb-cover has an alternate annotation mode which puts
2694 the form annotations at the car of the form, instead of annotating
2695 it completely. The benefit of this mode is that it shows better
2696 which forms were instrumented by the compiler.
2697 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2698 by printer control variables. (reported by Dan Corkill)
2699 * bug fix: system leaked memory when delayed output was performed by
2700 the OS in smaller chunks then expected. (thanks to David Smith)
2701 * bug fix: system leaked memory when file streams were not closed
2703 * bug fix: large objects written to slow streams that were modified
2704 after the write could end up with the modified state written to
2705 the underlying file descriptor.
2706 * bug fix: multiple threads operating in parallel on the same stream
2707 could cause buffer-overflows.
2708 * bug fix: source location information is stored correctly
2709 (broken since 1.0.6). This bug would generally show up as the
2710 Slime debugger highlighting the wrong form when the sldb-show-source
2712 * bug fix: Branch forms are again annotated as branches in the sb-cover
2714 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2715 on x86-64. (reported by Gregory Vanuxem)
2716 * bug fix: EQUALP could return wrong results for structures with raw
2717 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2718 word). (reported by Vjacheslav Fyodorov)
2719 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2722 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2723 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2724 atomic compare-and-swap operations on threaded platforms.
2725 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2726 allows assigning a global minimum value to optimization qualities
2727 (overriding proclamations and declarations).
2728 * enhancement: closed over variables can be stack-allocated on x86
2730 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2732 * optimization: slot definition lookup is now O(1). This speeds up
2733 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2734 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2735 * optimization: ASSOC and MEMBER can now be open-coded for all
2736 combinations of keyword arguments when second argument is constant
2737 and SPEED >= SPACE. In other cases a specialized version is
2739 * bug fix: using obsoleted structure instances with TYPEP and
2740 generic functions now signals a sensible error.
2741 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2742 (reported by Kristoffer Kvello)
2743 * bug fix: backtrace construction is now more careful when making
2744 lisp-objects from pointers on the stack, to avoid creating bogus
2745 objects that can be seen by the GC.
2746 * bug fix: defaulting of values in contexts expecting more than 7
2747 variables now works on x86-64. (reported by Christopher Laux)
2748 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2750 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2751 as the property-list of a symbol.
2752 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2753 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2754 situations requested, are once again file-compileable. (reported
2757 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2758 * MOP improvement: support for user-defined subclasses of
2759 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2760 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2761 the expansion of DEFMETHOD, is responsible for generating a form
2762 which creates a list of specializers when evaluated. Additional
2763 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2764 debugging and introspective support.
2765 * minor incompatible change: the (unsupported) spinlock interface
2766 has changed: free spinlock now has the value NIL, and a held spinlock
2767 has the owning thread as its value.
2768 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2769 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2771 * enhancement: name of a socket-stream is now "a socket" instead of
2772 "a constant string".
2773 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2774 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2775 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2776 for generic functions. (Thanks to Tobias C. Rittweiler)
2777 * optimization: bignum printing speed has been improved by 20-40%
2778 (depending on the bignum size.)
2779 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2781 * bug fix: the cache used by the CLOS to store precomputed effective
2782 methods, slot offsets, and constant return values is now thread and
2784 * bug fix: generic function dispatch function updating is now thread
2785 and interrupt safe (in the sense that the known issues have been
2787 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2788 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2789 * bug fix: asdf systems with dependencies to the SB-POSIX or
2790 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2791 * bug fix: interrupt safety of applicable method computation has been
2794 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2795 * new contrib: sb-cover, an experimental code coverage tool, is included
2796 as a contrib module.
2797 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2798 significantly faster.
2799 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2800 produce more efficient code on x86-64 if the compiler can determine
2801 that (+ INDEX <constant>) does not require a bounds check and FOO
2802 has an element type at least 8 bits wide.
2803 * enhancement: a new, experimental synchronous timeout facility is
2804 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2805 * enhancement: when a symbol name conflict error arises, the
2806 conflicting symbols are always printed with a package prefix.
2807 (thanks to Kevin Reid)
2808 * enhancement: stepping is now once again supported on the SPARC and
2809 MIPS platforms. (It is also now more likely to work on CheneyGC
2811 * enhancement: sb-sprof can now also track and report accurate call
2813 * bug fixes: the treatment of non-standard subclasses of
2814 SB-MOP:SPECIALIZER is more correct.
2815 * incompatible change: PURIFY no longer copies the data from the
2816 dynamic space into the static and read-only spaces on platforms
2817 that use the generational garbage collector
2818 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2820 * bug fix: GC race condition occasionally resulting in crashes with
2821 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2823 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2825 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2826 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2827 * bug fix: an asynchronous interrupt could previously leave the
2828 system running with GC inhibited.
2829 * bug fix: a DECLARE form evaluated at top-level now causes an error
2830 rather than silently (or verbosely) returning NIL.
2831 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2832 result in a error being signalled due to source form lookup errors.
2833 (reported by Peter Graves)
2835 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2836 * incompatible change: removed writer methods for host-ent-name,
2837 host-ent-addresses -- changing the values did not update the DNS
2839 * minor incompatible change: changed experimental JOIN-THREAD interface
2840 * documentation: the manual now lists reader and writer methods
2841 in class slot documentation sections. (thanks to Richard M Kreuter)
2842 * documentation: unwinding from asyncronous events has been
2843 documented as unsafe.
2844 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2845 in multithreaded application code.
2846 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2847 platforms. (thanks to James Anderson for the optimization hint)
2848 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2850 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2851 variants no longer cons.
2852 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2853 their NOT- variants no longer cons.
2854 * optimization: EQUAL hash tables no longer use SXHASH for objects
2855 of all data types, but instead use an EQL hash for types for which
2856 EQUAL is the same as EQL.
2857 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2858 are significantly faster.
2859 * optimization: new STRING-OUTPUT-STREAM implementation is much
2860 faster for large outputs and conses 30% less on average.
2861 * enhancement: XREF information is now collected for references made
2862 to global variables using SYMBOL-VALUE and a constant argument.
2863 * enhancement: SIGINT now causes a specific condition
2864 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2865 * bug fix: FILE-POSITION used to signal an error in some cases where
2866 ANSI requires it to return NIL.
2867 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2868 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2869 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2871 * bug fix: bad type declaration in the CLOS implementation has
2872 been fixed. (reported by James Anderson)
2873 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2874 (thanks to Lutz Euler)
2875 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2876 required by the CLHS. (reported by Samium Gromoff)
2877 * bug fix: dead unbound variable references now signal an error.
2878 (reported by Marco Monteiro)
2879 * bug fix: / with an unused value was being deleted in safe code.
2880 (thanks to Marco Monteiro and Kevin Reid)
2881 * bug fix: number of characters that can be written onto a single
2882 line in a file is unlimited.
2883 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2884 been fixed by inhibiting interrupts for when GC is disabled.
2885 * bug fix: some interrupt safety issues with GETHASH, (SETF
2886 GETHASH), CLRHASH and REMHASH have been fixed.
2887 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2888 specifier no longer causes infinite recursion.
2889 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2890 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2891 * bug fix: an &environment argument with the correct variable information
2892 is passed to macros that are expanded during byte compilation.
2893 (reported by Samium Gromoff)
2894 * bug fix: a logic error was causing the hash function for bignums to
2895 have excessive amounts of collisions. (reported by Faré Rideau)
2896 * bug fix: modifying the contents of an array could change the return
2897 value of SXHASH on that array, which is only allowed for strings
2898 and bit vectors. (bug introduced in 0.9.16)
2899 * improvement: the x86-64/darwin port now passes all tests (except
2900 for the debugger tests) but should still be considered
2901 experimental until this is fixed.
2902 * improvement: a style-warning is signaled for CASE (etc) clauses with
2903 duplicate keys. (thanks to Kevin Reid)
2904 * improvement: macos/x86 and macos/x86-64 now use mach exception
2905 handlers for dealing with illegal instructions (for trapping and
2906 error handling) and memory protection violations (for GC).
2908 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2909 * new platform: experimental support for x86-64/darwin (MacOS).
2910 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2911 and getnameinfo sockets functions are used instead of gethostbyaddr
2912 and gethostbyname, on platforms where the newer functions are available.
2913 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2915 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2916 don't print the startup banner, but behave as if --noinform was passed
2917 as a command line argument. (thanks to Kevin Reid)
2918 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2919 * optimization: code using alien values with undeclared types is much faster.
2920 * optimization: the compiler is now able to open code SEARCH in more cases.
2921 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2922 * bug fix: using standardized COMMON-LISP special variables as loop
2923 variables no longer signals bogus package lock violations. (reported
2925 * bug fix: declaring local loop variables to be of a range-limited type
2926 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2927 (reported by Andras Simon)
2928 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2929 bugs remain on x86-64.)
2930 * bug fix: the #= and ## reader macros now interact reasonably with
2931 funcallable instances.
2932 * bug fix: type-checks for function arguments were compiled using the
2933 compiler policy settings of the wrong lexical environment (in 1.0.2
2935 * bug fix: SHADOW accepts characters as string designators, as required
2936 by the spec (thanks to Eric Marsden)
2937 * bug fix: fixed GC safety issues when foreign functions are called with
2938 non-base strings as arguments
2939 * bug fix: more consistent error output for fatal-compiler-warnings, like
2941 * bug fix: functions with proper names were showing up as NIL in
2942 backtraces (reported by Edi Weitz, regression in 1.0.2)
2944 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2945 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2946 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2947 produce more efficient code on the x86 if the compiler can determine
2948 that (+ INDEX <constant>) does not require a bounds check and FOO
2949 has an element type at least 8 bits wide.
2950 * bug fix: references to undefined variables are handled the same way
2951 in toplevel forms as in the normal compiler
2952 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2954 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2955 (thanks to Jon Buller)
2956 * improvement: faster compilation times for complex functions
2957 * improvement: added readlink support to SB-POSIX (thanks to Richard
2960 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2961 * improvement: experimental support for mach exception handling on
2962 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2964 * improvement: support for GBK external format.
2965 (thanks to Chun Tian (binghe))
2966 * improvement: the debugger now displays variables that have been closed
2967 over, in code compiled with (DEBUG 2) or higher
2968 * improvement: support for executable cores on NetBSD (thanks to
2970 * new feature: added a RESTART-FRAME debugger command
2971 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2972 be used to provide an implementation for FILE-POSITION on Gray streams
2973 (thanks to Eric Marsden)
2974 * new feature: add syslog, openlog and closelog support to SB-POSIX
2975 (thanks to Richard Kreuter)
2976 * optimization: the function call overhead in code compiled with
2977 a high DEBUG optimization setting is significantly
2978 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2979 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2980 (thanks to Tony Martinez)
2981 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2982 evaluated once (reported by Kevin Reid)
2983 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2984 works again (thanks to Kilian Sprotte)
2985 * bug fix: an error is signaled for tagbodies with duplicate tags
2986 (thanks to Stephen Wilson)
2987 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2988 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2989 stack frames from alien callbacks.
2990 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2991 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2992 65k pages (thanks to David Woodhouse)
2993 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2995 changes in sbcl-1.0.1 relative to sbcl-1.0:
2996 * new platform: FreeBSD/x86-64, including support for threading.
2997 * new feature: the compiler stores cross-referencing information
2998 about function calls (who-calls), macroexpansion (who-macroexpands)
2999 and special variables (who-binds, who-sets, who-references) for code
3000 compiled with (< SPACE 3). This information is available through the
3001 sb-introspect contrib.
3002 * new feature: users may subclass SEQUENCE, and have instances of
3003 these classes interoperate with standard Common Lisp functions if
3004 a number of methods are defined. (This feature is experimental
3005 and the interface subject to change based on feedback from SBCL
3006 users and the general community)
3007 * improvement: sb-sprof traces call stacks to an arbitrary depth on
3008 x86/x86-64, rather than the previous fixed depth of 8
3009 * improvement: another pthread back-end of mutex "pthread-futex".
3010 * bug fix: non-ascii command-line arguments are processed correctly
3011 (thanks to Yaroslav Kavenchuk)
3012 * bug fix: non-required arguments were not passed correctly when a method
3013 defined using DEFMETHOD was called from a mop-generated method using
3014 CALL-NEXT-METHOD (reported by Pascal Costanza)
3015 * bug fix: recursion is now permitted in accessors through
3016 SLOT-UNBOUND. (reported by Pascal Costanza)
3017 * bug fix: an error was signaled at startup if the HOME environment
3018 variable was defined, but had an empty value (reported by Peter Van Eynde)
3019 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
3020 signal a PROGRAM-ERROR, not a BUG.
3021 * bug fix: SB-POSIX:READDIR works when built with large file support.
3022 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
3024 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
3025 for better automatic indentation support. (thanks to Matt Pillsbury)
3026 * optimization: loading generic functions no longer takes O(n^2) time,
3027 proportional to the amount of methods in the generic function
3028 (reported by Todd Sabin and Jeremy Brown)
3029 * optimization: the FIND and POSITION family of sequence functions
3030 are significantly faster on arrays whose element types have been
3032 * improvements to the Windows port:
3033 ** Intermittent heap corruption problems have been fixed. (thanks
3034 to Alastair Bridgewater)
3035 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
3037 ** Lisp is able to unwind foreign exception frames from alien
3038 callbacks. (thanks to Alastair Bridgewater)
3040 changes in sbcl-1.0 relative to sbcl-0.9.18:
3041 * improvement: experimental support for threading on FreeBSD/x86.
3042 (thanks to NIIMI Satoshi)
3043 * improvement: runtime option --dynamic-space-size can be used
3044 to set the size of the dynamic space reserved on startup.
3045 * improvement: floating point modes in effect are now saved in
3046 core, and restored on startup.
3047 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
3048 startup, not time since first call to GET-INTERNAL-REAL-TIME.
3049 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
3050 threads are not running after *SAVE-HOOKS* have run.
3051 * improvement: writes to CLOS instance slots are type-checked in code
3052 compiled with (SAFETY 3)
3053 * improvement: floating-point exception handling on FreeBSD (thanks to
3055 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
3056 (thanks to Zach Beane)
3057 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
3059 * improvement: added support for the Shift-JIS external format.
3060 (contributed by NIIMI Satoshi)
3061 * improvement: callbacks are supported on Linux/PPC. (thanks to
3063 * bug fix: compiler bug triggered by a (non-standard) VALUES
3064 declaration in a LET* was fixed. (reported by Kaersten Poeck)
3065 * bug fix: file compiler no longer confuses validated and already
3066 dumped structurres. (reported by Kaersten Poeck)
3067 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
3068 fill-pointer signals a type-error as required. (thanks to
3070 * bug fix: disassemly of funcallable instances works.
3071 * bug fix: single stepping on PPC.
3072 * bug fix: fix thread-safety problems in the type system (generally
3073 manifesting as nonsensical errors like "STRING is a bad type specifier
3074 for sequences" or "The value 1 is not of type FIXNUM")
3075 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
3076 (reported by Josip Gracin)
3077 * bug fix: an error is signaled for attempts to displace arrays with
3078 incompatible element types (thanks to Mario Mommer)
3079 * bug fix: more correct handling of wide characters in debug info
3080 (bug reported by Attila Lendvai and fixed by Juho Snellman)
3081 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
3082 and don't cause extra consing
3083 * optimization: MAP and MAP-INTO are significantly faster on vectors
3084 whose elements types have been declared.
3085 * Improvements to SB-SPROF:
3086 ** Support for allocation profiling
3087 ** Reduced profiling overhead, especially for long profiling runs
3088 * Improvements to the Windows port:
3089 ** floating point exceptions are now reported correctly.
3090 ** stack exhaustion detection works partially.
3091 ** more accurate GET-INTERNAL-REAL-TIME.
3092 ** better RUN-PROGRAM behaviour in case of errors in the child
3094 ** PROBE-FILE now simplifies pathnames correctly.
3095 ** DIRECTORY now works correctly with :WILD-INFERIORS.
3096 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
3097 1st 1970 (although time timezone data will be unreliable).
3098 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
3100 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
3101 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
3102 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
3104 * bug fix: two potential GC deadlocks affecting threaded builds.
3105 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
3106 returns T (reported by Anton Kazennikov)
3107 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
3108 with non-variable places
3109 * bug fix: remove a race condition in the setting of
3110 funcallable-instance functions, this should make threaded CLOS
3111 code more stable against memory faults.
3112 * bug fix: corruption of specials when unbinding is interrupted by an
3113 asynchronous unwind (reported by Hannu Koivisto)
3114 * improvement: the debugger will now also display local variables that
3115 are only used once, for code compiled with a DEBUG optimization quality
3118 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
3119 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
3120 * incompatible change: External-format support for FFI calls. The
3121 SB-ALIEN:C-STRING no longer implies an ASCII
3122 external-format. Instead the string is subject to external-format
3123 conversion. Additionally return values of type SB-ALIEN:C-STRING
3124 are by default of type (SIMPLE-ARRAY CHARACTER), not
3125 SIMPLE-BASE-STRING. For an alien type that behaves like the old
3126 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
3127 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
3128 * incompatible change: SB-EXT package no longer contains the
3129 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
3130 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
3132 * incompatible change: the single-stepper is no longer available
3133 on Alpha, Mips and Sparc platforms.
3134 * minor incompatible change: the direct superclasses of
3135 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
3136 not (STANDARD-OBJECT FUNCTION). This makes the
3137 class-precedence-lists of GENERIC-FUNCTION and
3138 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
3140 * minor incompatible change: the default stream external format on
3141 non-unicode SBCL is no longer detected from the locale, but is always
3143 * new feature: Add a version of evaluator that uses an interpreter instead
3144 of the compiler. EVAL still uses the compiler by default, to switch it
3145 to use the interpreter, set the value of the variable
3146 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
3147 * minor incompatible change: the single-stepper REPL has been merged
3148 with the normal debugger (see the "Stepping" heading of the debugger help
3149 for more details). The debugger command STEP will no longer switch
3150 to the single-stepper REPL.
3151 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
3152 for a type now works.
3153 * bug fix: loading of default sysinit file works. (thanks to Leonid
3155 * bug fix: better detection of circularities in the file-compiler.
3156 (reported by Marco Monteiro)
3157 * bug fix: the CL pathname functions now work with files that have
3158 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
3159 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
3160 systems with Unix98 pty semantics.
3161 * bug fix: ASDF-INSTALL will now work with bsd tar.
3162 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
3164 * bug fix: timers expiring in dead threads no longer cause a
3165 type-error (reported by Paul "Nonny Mouse").
3166 * bug fix: thanks to more lightweight single-stepper instrumentation,
3167 code compiled with (DEBUG 3) will compile and execute significantly faster,
3168 and will have more accurate type-inferencing than before
3169 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
3170 whose bindings are modified
3171 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
3172 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
3173 ** replace dummy implementations of CL:MACHINE-INSTANCE and
3174 CL:SOFTWARE-VERSION with proper version
3176 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
3177 * feature: implemented the READER-METHOD-CLASS and
3178 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
3179 as specified by AMOP.
3180 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
3182 * optimization: faster LOGCOUNT implementation on x86 and x86-64
3183 (thanks to Lutz Euler)
3184 * optimization: hashing of general arrays and vectors has been
3185 improved. (reported by Any Fingerhut)
3186 * enhancement: SB-INTROSPECT is now able to find definitions of
3187 profiled functions. (thanks to Troels Henriksen)
3188 * enhancement: compiler-macro expansion applies now to FUNCALL forms
3189 as well, allowing compiler-macros for SETF-functions to expand.
3190 * enhancement: step-instrumentation no longer wraps known
3191 single-value functions with multiple-value context, allowing
3192 better type inference.
3193 * fixed bug #337: use of MAKE-METHOD in method combination now works
3194 even in the presence of user-defined method classes. (reported by
3195 Bruno Haible and Pascal Costanza)
3196 * fixed bug #339(c): if there are applicable methods not part of any
3197 long-form method-combination group, call INVALID-METHOD-ERROR.
3198 (reported by Bruno Haible)
3199 * fixed bug #361: the :FUNCTION initarg in the protocol for
3200 initialization of methods can now be used to override
3201 internally-produced optimized functions. (reported by Bruno
3203 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
3204 system-provided lambda expression no longer cause warnings about
3205 unbound #:|pv-table| symbols.
3206 * bug fix: improved the handling of type declarations and the
3207 detection of violations for keyword arguments with non-constant
3209 * bug fix: potentially erronous calls to PATHNAME and
3210 MERGE-PATHNAMES were being flushed in some cases.
3211 (reported by Richard Kreuter)
3212 * bug fix: compiled calls to TYPEP were mishandling obsolete
3213 instances. (reported by James Bielman and Attila Lendvai)
3214 * bug fix: format strings with ~> without matching ~< no longer
3215 trigger an AVER, but signal an understandable error instead.
3216 (reported by Antonio Martinez)
3217 * bug fix: specifying an output-file without a pathname-type for
3218 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
3219 of input-file instead of "fasl". (reported by Robert Dodier)
3220 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
3221 (reported by James Y Knight).
3222 * bug fix: compiler-macros-function did not consider the environment
3223 argument for shadowing by local functions.
3224 * bug fix: compiler-macros expansion was inhibited by local INLINE
3226 * bug fix: inline expansions of known functions were subject to
3227 step-instrumentation in high debug policies, leading to problems
3228 with type-inference.
3229 * bug fix: compiler failed to differentiate between different CONS
3230 types in some cases.
3231 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
3232 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
3233 * bug fix: #368: incorrect use of expressed vs. upgraded array
3235 * bug fix: #306a: more precise unions of array types.
3236 * thread-safety improvements:
3237 ** CONDITION-WAIT could return early on Linux, if the thread was
3238 interrupted and subsequently continued with SIGCONT.
3239 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
3241 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
3242 * added support for the ucs-2 external format. (contributed by Ivan
3244 * minor incompatible change: pretty printing of objects of type
3245 (cons symbol) is, in the default pprint-dispatch-table, now
3246 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3248 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3249 called later in a class's lifetime, possibly as late as when the
3250 first instance of the class is created. Previously,
3251 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3252 class became finalizeable.
3253 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3254 for multibyte external-format streams. (thanks to "vbzoli")
3255 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3256 with :ALLOCATION :CLASS inherited from superclasses of the
3258 * fixed bug: anonymous classes can now be created using the :NAME
3259 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3260 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3261 * fixed bug: core-files saved with :EXECUTABLE T can again be
3262 executed when SBCL_HOME isn't set. (reported by James Knight)
3263 * fixed bug: toplevel LOCALLY forms with declarations could
3264 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3265 * fixed bug: printing from several different threads using different
3266 values of *print-case* could cause invalid output, due to
3267 some internal special variables of the printer not being bound
3268 thread-locally (reported by Max Mikhanosha)
3269 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3270 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3271 (reported by Pascal Costanza)
3272 * fixed bug: FINALIZE-INHERITANCE is called from
3273 REINITIALIZE-INSTANCE on classes when the class has previously
3274 been finalized, as required by AMOP.
3275 * minor code generation optimizations:
3276 ** better register allocation in CLOS dispatching functions
3277 ** overflow detection when coercing signed bytes to fixnums on x86-64
3278 ** is now implemented with one IMUL instruction instead of three shifts
3279 ** more efficient bit-vector access on x86 and x86-64
3280 ** more efficient access to raw structure slots on x86 and x86-64
3281 * fixed some bugs revealed by Paul Dietz' test suite:
3282 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3283 return its argument.
3285 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3286 * feature: thread support on Solaris/x86, and experimental thread support
3288 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3290 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3291 default method for SLOT-UNBOUND.
3292 * minor incompatible change: prevent the user from specializing the
3293 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3294 somewhat counter to the intent of the protocol, I (CSR) think, and
3295 additionally it just doesn't work in SBCL as currently
3296 implemented, thanks to optimizations (that are always valid for
3297 the other three SLOT-VALUEish functions, but not for the setter).
3298 * minor incompatible change: the :SB-LDB feature is now enabled by
3299 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3300 the low-level debugger.
3301 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3302 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3303 down to an SB-SYS:FD-STREAM, allowing direct communication in
3304 more cases. Temporary files and pipes are still used as a fallback
3306 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3307 on the non-reentrant C functions localtime(3) and gmtime(3).
3308 * bug fix: global optimization policy was not visible in LOCALLY and
3310 * bug fix: class objects can be used as specializers in methods.
3311 (reported by Pascal Costanza)
3312 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3313 with a type error. (reported by blitz_ on #lisp)
3314 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3315 failed with a type error. (reported by Pascal Bourguignon)
3316 * bug fix: merging pathnames against defaults with :DIRECTORY
3317 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3318 (reported by James Y Knight)
3319 * bug fix: saving large (>2GB) cores on x86-64 now works
3320 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3321 constant index and a (simple-array (signed-byte 32)) array
3322 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3323 error (patch by Robert J. Macomber)
3324 * feature: TIME now displays the amount of run-time spent in GC
3325 * bug fix: The debugger now does a better job of respecting
3326 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3327 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3328 workaround for bug 403.)
3329 * bug fix: floating point exception handling now works on FreeBSD
3330 (thanks to NIIMI Satoshi)
3331 * fixed some bugs revealed by Paul Dietz' test suite:
3332 ** MISC.641: LET-conversion were not supposed to work in late
3334 * improvements to the Win32/x86 port:
3335 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3336 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3338 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3339 * new feature: source path information is generated for macro-expansion
3340 errors for use in IDE's like Slime (thanks to Helmut Eller)
3341 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3342 * bug fix: compiler does not loop forever on an invalid type in
3344 * improvement: compilation of most CLOS applications is significantly
3346 * optimization: added a limited bytecode compiler for simple toplevel
3347 forms, speeding up compilation and FASL loading
3348 * bug fix: the statistical profiler now properly distinguishes anonymous
3351 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3352 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3353 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3354 into subclasses of the finalized class. Now user calls to
3355 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3356 system return before any subclasses are finalized.
3357 * minor incompatible change: The reader no longer ignores errors
3358 regarding non-existent packages in #+ and #- feature tests.
3359 * new feature: command line options --no-sysinit, --no-userinit to
3360 inhibit loading the corresponding init files
3361 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3362 for sending data through UDP sockets (thanks to François-René Rideau)
3363 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3364 error is signalled instead (thanks to François-René Rideau)
3365 * minor incompatible change: Error signalling behaviour of lexical
3366 operations violating package locks has changed slightly. Refer to
3367 documentation on package locks for details.
3368 * enhancement: EVAL can process IF-expressions without resorting to the
3370 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3371 constant-folded properly due to missing out-of-line functions.
3372 (reported by Mika Pihlajamäki)
3373 * bug fix: LISTEN sometimes returned T even in cases where no data was
3374 immediately available from the stream
3375 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3376 were reversed. (reported by Levente Mészáros)
3377 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3378 when given a vector displaced to an adjustable array. (reported
3380 * bug fix: derivation of float boundaries from numbers outside the
3381 appropriate float range (reported by John Wiseman)
3382 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3384 * bug fix: precomputing cache entries for generic functions with
3385 some subclasses of specializers as yet invalid does not attempt to
3386 fill a cache line with a negative offset. (reported by Levente
3388 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3389 allow condition class objects as arguments to DOCUMENTATION and
3390 (SETF DOCUMENTATION); only find and set documentation for
3391 structure names for the STRUCTURE doc-type. (suggested by Gary
3393 * improvements to the Win32/x86 port:
3394 ** (user-homedir-pathname) and default initialization file
3395 locations now know about the user's "Documents and Settings"
3396 directory (thanks to Yaroslav Kavenchuk)
3397 ** run-program is implemented (thanks to Mike Thomas)
3398 ** sockets support (thanks to Timothy Ritchey)
3399 ** better backtrace support (thanks to Alastair Bridgewater)
3400 ** sb-grovel supported
3401 ** asdf-install and sb-posix work somewhat
3402 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3403 * improvements to the Solaris/x86 port:
3404 ** works on Solaris 11/Solaris Express
3405 ** floating-point exception handling support
3406 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3407 * fixed some bugs revealed by Paul Dietz' test suite:
3408 ** REMOVE-METHOD returns its generic function argument even when
3409 the method is not one of the generic functions' methods.
3410 ** objects declared as MEMBER types can be admissible arguments to
3411 structure accessors.
3412 ** printing characters should simply be printed by the FORMAT ~:C
3414 ** compiler failure when compiling functions with hairy constant
3415 defaults for optional parameters.
3416 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3417 function, which is already optimized.
3419 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3420 * new platform: experimental support for SBCL x86/Darwin, including
3421 MacOS X 10.4.5 on Intel.
3422 * new feature: Unicode character names are now known to the system
3423 (through CHAR-NAME and NAME-CHAR).
3424 * new feature: the filesystem location of SBCL's core file is
3425 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3426 * minor incompatible change: the contrib modules SB-POSIX and
3427 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3428 this change is to make it easier to distribute
3429 location-independent binaries.
3430 * bug fix: as implied by AMOP, standardized classes no longer have
3431 slots named by external symbols of public packages. (reported by
3433 * optimization: calling functions via constant symbols -- as in
3434 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3435 via the function object as in (FUNCALL #'FOO).
3436 * optimization: on x86 and x86-64, the calling convention for the
3437 case of dealing with an unknown number of values has been altered
3438 to be friendlier to the prediction heuristics implemented,
3439 particularly with reference to CALL and RET pairing. (thanks to
3440 Alastair Bridgewater)
3441 * optimization: on x86, the code for access to thread-local symbol
3442 values and binding/unbinding of thread-local symbols is smaller.
3443 (thanks to Alastair Bridgewater)
3444 * enhancement: CONSTANTP is now able to determine constantness of
3445 more complex forms, including calls to constant-foldable standardized
3446 functions and some special forms beyond QUOTE.
3447 * fixed bug: occasional GC crashes on Solaris/x86
3448 * optimization: x86-64 supports stack allocation of results of simple
3449 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3450 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3451 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3452 (thanks to James Knight)
3453 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3454 by the standard (thanks to Stephen Compall)
3456 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3457 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3458 be used for bundling the runtime and the core file into one
3459 executable binary. This feature is not currently supported on all SBCL
3460 platforms. (thanks to James Bielman and NIIMI Satoshi)
3461 * new feature: a generational or ephemeral garbage collector is now
3462 the default on the PowerPC platform (both Linux and Darwin). The
3463 old Cheney (stop and copy) collector is a build-time option.
3464 (thanks to Cyrus Harmon, after Raymond Toy)
3465 * minor incompatible change: the method by which SBCL finds its
3466 contributed modules has changed; it no longer relies on symbolic
3467 links from an $SBCL_HOME/systems directory, but searches directly
3468 in the subdirectories of $SBCL_HOME.
3469 * enhancement: the dynamic heap size on the Linux/PPC platform is
3470 markedly larger, even using the older Cheney garbage collector.
3471 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3472 certain complicated string types. (reported by Gary King)
3473 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3474 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3475 * fixed bug: DOCUMENTATION on structures no longer signals an
3476 error if no structure type of the right name exists. (reported by
3478 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3479 applicable non-standard primary or :AROUND method on
3480 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3481 no longer cause unbound variable errors. (reported by Kevin Reid)
3482 * fixed bug: metacircle resolution in cases where methods have slots
3483 added before the slots from STANDARD-METHOD. (reported by Jean
3485 * fixed bug: the Power PC assembly code for calling into lisp
3486 sometimes computed its return address wrongly (depending on the
3487 15th bit of the address, fixed at link time). This used to
3488 manifest itself in a segmentation violation while building PCL.
3489 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3490 many others over the years)
3491 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3492 the stack pointer (treated as a signed integer) is negative.
3493 (thanks to Peter van Eynde)
3495 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3496 * new platform: experimental support for the Windows operating
3497 system has been added. (thanks to Alastair Bridgewater)
3498 * fixed several bugs in and robustified the PPC FFI (including
3499 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
3500 * bug fix: allow non-simple string symbol names (reported by Paul
3502 * bug fix: interrupt handling on NetBSD (thanks to Richard M
3504 * bug fix: saving a core corrupted callbacks on x86/x86-64
3505 * bug fix: closed a loophole in metacircularity detection and
3506 grounding in the PCL implementation of CLOS.
3507 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
3508 (reported by tomppa on #lisp)
3509 * bug fix: clear the direction flag on Lisp -> C transitions, as
3510 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3511 (reported by Andrej Grozin and Hendrik Maryns)
3512 * optimization: major improvements to GC efficiency on GENCGC platforms
3513 * optimization: faster implementation of EQUAL
3514 * optimization: emit more efficient opcodes for some common
3515 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3516 * optimization: several other minor code-generation improvements on x86-64
3517 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3519 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3520 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3521 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3522 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3523 by ANSI as a generic function, and for consistency (SETF
3524 GENERIC-FUNCTION-NAME) is treated likewise.
3525 * fixed bug #233.b: make constraint propagation notice when a variable
3526 value is changed after it is referenced but before it is used
3527 * fixed bug #296: no more arbitrary behaviour from filenames with
3528 odd characters as --load arguments. (reported by Adam Warner)
3529 * fixed bug #390: :CHARACTER-SET pathname components now work as
3530 expected. (reported by Tim Daly Jr)
3531 * fixed bug #391: complicated :TYPE intersections in slot
3532 definitions no longer cause an error in PCL internals.
3533 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3534 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3535 returning the number of octets which would be written to the
3536 file-stream. (thanks to Robert J. Macomber)
3537 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3538 arguments to the internal stream functions. (thanks to David
3540 * bug fix: stack exhaustion is now handled on the x86/SunOS
3541 platform. (thanks to Daisuke Homma)
3542 * bug fix: more accurate ROOM results on GENCGC platforms
3543 * optimization: improved type inference for arithmetic-for
3544 index variables in LOOP
3545 * optimization: faster floating-point SQRT on x86-64
3546 * fixed some bugs revealed by Paul Dietz' test suite:
3547 ** DOCUMENTATION returns NIL instead of "" for method combinations
3548 that don't have a docstring
3550 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3551 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3552 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3553 therefore are not customizeable by user code (as seems to be at
3554 least permitted and maybe required by AMOP). As a consolation,
3555 however, the SBCL implementation of these functions now calls
3556 REINITIALIZE-INSTANCE as specified by AMOP.
3557 * bug fix: slot-definition documentation is propagated as per ANSI
3558 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3559 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3560 argument, as do eslotd initialization methods. (from Pascal
3561 Costanza's "Closer" project)
3562 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3563 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3565 * bug fix: it is now possible to have more than one subclass of
3566 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3567 (reported by Bruno Haible, Pascal Costanza and others)
3568 * bug fix: the dependent update protocol now works for generic
3569 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3570 and Pascal Costanza)
3571 * bug fix: condition-class instances corresponding to
3572 DEFINE-CONDITION forms are now created eagerly. (reported by
3573 Kalle Olavi Niemitalo on comp.lang.lisp)
3574 * bug fix: floating point printing is more accurate in some
3575 circumstances. (thanks to Simon Alexander)
3576 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3577 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3578 * bug fix: callbacks on OS X now preserve stack-alignment.
3579 (thanks to Cyrus Harmon)
3580 * enhancement: the x86-64 disassembler is much better at
3581 disassembling SSE instructions. (thanks to Lutz Euler)
3582 * enhancement: CHECK-TYPE on a variable now allows type-inference
3583 (thanks to Vincent Arkesteijn)
3584 * optimization: improved performance of EUC-JP external format.
3585 (thanks to NIIMI Satoshi)
3586 * optimization: performance improvements to IO on file streams of
3587 :ELEMENT-TYPE CHARACTER
3588 * optimization: much faster memory allocation on x86-64
3589 * optimization: faster garbage collections (latency and throughput)
3591 * optimization: faster bignum subtraction and division on x86 and x86-64
3592 (thanks to Lutz Euler)
3593 * optimization: more accurate type-inference for loops that use a
3594 floating point index variable or a negative step.
3596 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3597 * bug fix: add a workaround to SBCL looping infinitely at startup on
3598 Linux kernels with apparently buggy implementations of personality().
3599 (thanks to Svein Ove Aas)
3600 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3601 (thanks to David Lichteblau)
3602 * bug fix: local bindings shadow global symbol macros for
3603 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3604 * optimization: non-open coded uses of numeric comparison operators
3605 (e.g. >) no longer cons when called with more than one parameter
3606 on platforms supporting dynamic-extent allocation.
3607 * enhancement: saving cores with foreign code loaded is now supported
3608 on MIPS/Linux in addition to the previously supported platforms.
3609 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3610 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3611 * bug fix: division by zero in sb-sprof when no samples were collected
3612 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3613 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3614 (thanks to Alexander Kjeldaas)
3615 * new feature: ignoring the return values of destructive functions
3616 like NREVERSE signals a compile-time style-warning.
3617 (thanks to Kevin Reid)
3618 * new feature: the alignment of alien structure fields can be
3619 explicitly specified. (thanks to Cyrus Harmon)
3620 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3621 and dump core on SIGQUIT
3623 ** incompatible change: threads do not inherit values of specials
3624 from their parents (see manual)
3625 ** bug fix: threads stacks belonging to dead threads are freed by the
3626 next exiting thread, no need to gc to collect thread stacks anymore
3627 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3628 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3629 ** bug fix: dynamic variable and thread start related gc lossage
3630 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3632 * fixed some bugs revealed by Paul Dietz' test suite:
3633 ** SUBTYPEP is slightly more accurate on heinously complicated
3634 CONS types where some of the members have uncertain (in the
3635 NIL, NIL sense) type relationships to each other.
3637 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3638 no longer purified unless :PURIFY T is explicitly specified.
3639 ** Non-purified cores are significantly smaller than before
3641 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3642 * new feature: timers based on Zach Beane's excellent timer package
3643 * added support for the following external formats: koi8-u,
3644 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3645 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3646 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3647 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3648 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3649 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3650 * incompatible change: a threaded SBCL will no longer revert to
3651 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3652 * bug fix: interrupts are disabled until startup is complete; no
3653 more sigsegvs when receiving a signal to soon
3654 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3656 * bug fix: add a workaround for the memory randomization features in
3657 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3658 workaround will only be in effect on systems with the proc filesystem
3660 * bug fix: printing objects of type HASH-TABLE signals a
3661 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3663 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3664 have been running for over 50 days. (reported by Gilbert Baumann)
3665 * bug fix: the logic for getting names of functions gets less
3666 confused when confronded with alternate-metaclass
3667 funcallable-instances. (reported by Cyrus Harmon)
3668 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3669 consistent, even on internal alternate-metaclass objects.
3670 * bug fix: flush closure information collected by physical
3671 environment analysis prepass before the main pass. (bug reported
3673 * bug fix: compiler pack phase does not modify a hashtable, which is
3674 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3675 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3676 may be expanded. (reported by Alexander <malishev> on c.l.l)
3677 * bug fix: no more style-warnings when compiling code using LAST
3678 under high-SPEED low-SPACE settings. (reported by David Wallin
3680 * fixed some incompatibilities between SBCL's MOP and the MOP
3682 ** the METAOBJECT class is now implemented;
3683 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3684 STANDARD-OBJECT, as required;
3685 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3686 now compatible (as required by VALIDATE-SUPERCLASS); there
3687 remains a consistency requirement over the presence or absence
3688 of the FUNCTION class in the superclass list of finalized
3689 classes; see the manual for more details;
3690 ** the :AROUND method for COMPUTE-SLOTS on
3691 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3692 requested slot ordering.
3694 ** bug fix: parent thread now can be gc'ed even with a live
3696 ** bug fix: binding a special with PROGV to no value is not
3697 the same as that symbol not having been bound (thanks to
3699 ** bug fix: binding specials is thread safe (thanks to
3701 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3702 and SB-SPROF do not die with 'no handler for signal XX in
3703 interrupt_handle_now(..)' anymore
3704 ** bug fix: WITH-TIMEOUT works with multiple running threads
3705 * fixed some bugs revealed by Paul Dietz' test suite:
3706 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3707 the :method-class keyword argument.
3709 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3710 * new port: the Solaris operating system on x86 processors is now
3711 mostly supported, though some rough edges in the environment
3712 remain. (thanks to Daisuke Homma)
3713 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3714 space for its heap. (thanks to Thiemo Seufer)
3715 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3716 closures. (thanks to Thiemo Seufer)
3717 * minor incompatible change: eof selects abort in the debugger.
3718 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3719 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3721 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3722 deprecated, and will go away in a future revision of SBCL.
3723 * minor incompatible change: GC-ON and GC-OFF are no longer
3724 implemented with a counter, it does not matter how many times gc
3725 is switched on or off
3726 * bug fix: discriminating functions for generic function classes
3727 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3728 make invalid assumptions about method precedence order. (reported
3730 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3731 platforms. (thanks to Thiemo Seufer)
3732 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3733 * bug fix: correct pathname printing with printer escaping is on.
3734 (thanks to Kevin Reid)
3735 * bug fix: complex VOP definitions in "user-space" no longer trigger
3736 package locks. (reported by Zach Beane)
3737 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3738 for funcallable-instance functions, and is no different from
3740 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3741 characters in the current readtable. (reported by Nicholas Neuss)
3742 * bug fix: SUBTYPEP on various CONS types returns more a more
3743 accurate acknowledgment of its certainty.
3744 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3745 lists in some cases. This partially fixes bug 384.
3746 * flush all standard streams before prompting in the REPL and the
3748 * bug fix: signal handling and triggering gc do not conflict
3749 directly anymore, in particular a high frequency sb-sprof does
3750 not prevent gc from running
3751 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3752 approximation for timezone and DST information between the
3753 universal time epoch and the smallest negative 32-bit time_t.
3754 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3755 year 1899 so long as the encoded time is non-negative.
3756 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3757 the correct answer for non-constant rotate amounts when performing
3758 an inline 32-bit rotation.
3760 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3761 there is only one thread in the session
3762 ** bug fix: memory leak for streams created in one thread and
3763 written to in another
3764 ** bug fix: lockup when compiled with gcc4
3765 ** bug fix: race that allows the gc to be triggered when gc is
3767 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3768 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3770 ** bug fix: finished threads are gc'ed properly
3771 * fixed some bugs revealed by Paul Dietz' test suite:
3772 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3773 has arguments with a different set of applicable methods from
3774 the orignal arguments.
3775 ** The type error thrown by MAP now has a correct expected-type
3777 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3778 name a compiled function.
3779 ** Three MISC tests where a large bignum was improperly coerced to
3780 a float that couldn't represent that bignum during type
3781 derivation were fixed.
3782 ** SUBTYPEP can now handle types involving the negation of a
3783 list-form FUNCTION type.
3784 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3785 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3786 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3788 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3789 * New feature: Experimental support for bivalent streams: streams
3790 opened with :element-type :default now allow character and binary
3791 (unsigned-byte 8) I/O
3792 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3793 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3795 * bug fix: no more highly sporadic "couldn't check whether ~S is
3796 readable" when reading a stream and an interrupt hits in the middle
3797 of a select system call
3798 * compiler better recognizes complex arrays (reported by Eduardo
3800 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3801 for variables on SBCL built with linkage-tables. (reported by Luis
3803 * various error reporting improvements.
3804 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3805 (Thanks to Thiemo Seufer)
3806 * bug fix: nested reader invokations work correctly
3807 * bug fix: it is possible to have simultaneous references to foreign
3808 code and foreign data with the same name.
3810 ** added x86-64 support
3811 ** incompatible change: the threading api now works with thread
3812 objects instead of thread ids
3813 ** bug fix: threads are protected from signals and interruption when
3814 starting up or going down
3815 ** bug fix: a race where an exiting thread could lose its stack to gc
3816 ** bug fix: don't halt on infinite error in threads if possible
3817 ** fixed numerous gc deadlocks introduced in the pthread merge
3818 ** bug fix: fixed thread safety issues in read and print
3819 ** bug fix: debugger doesn't hang on session lock if interrupted at
3820 an inappropriate moment
3821 ** bug fix: run-program is now thread safe(r)
3822 ** bug fix: inner with-recursive-lock no longer releases the mutex
3823 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3824 * fixed some bugs revealed by Paul Dietz' test suite:
3825 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3826 EXPECTED-TYPE slots filled.
3827 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3829 ** MAKE-CONDITION accepts classes as type-designators.
3830 ** COMPILE may never return NIL.
3831 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3832 range before calling Unix time functions
3834 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3835 * numerous signal handling fixes to increase stability
3836 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3837 * minor incompatible change: we now correctly canonize default
3838 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3839 as per the MOP, rather than the historical (INITARG INITFUNCTION
3840 INITFORM). (reported by Bruno Haible)
3841 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3842 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3843 for more information.
3844 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3845 pathname is a directory pathname.
3846 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3847 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3849 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3850 :METACLASS argument in addition to a class name. (reported by
3851 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3852 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3853 (reported by Bruno Haible; patch from Gerd Moellmann)
3854 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3856 * bug fix: more cleanups to the floating point exception handling on
3857 x86-64 (thanks to James Knight)
3858 * bug fix: the compiler does not try to constant fold calls of
3859 COERCE and BIT-* functions when they return freshly constructed
3860 objects. (reported by Nikodemus Siivola and Paul Dietz)
3861 * optimization: improved the MIPS versions of generic (in the
3862 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3863 * optimization: direct conversion of (unsigned-byte 32) to floats on
3864 the PowerPC platform.
3865 * optimization: structure instances with raw slots now use less
3866 memory, and probably show better memory locality. (thanks to
3868 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3869 are treated as requests for stack allocation on the x86-64,
3870 Alpha-32, PPC and SPARC platforms.
3871 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3872 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3873 (thanks to Tony Martinez)
3875 ** gcing a dead thread can no longer lead to lockups
3876 ** threads block signals until they are set up properly
3877 ** errno is no longer shared by threads
3878 ** interrupt-thread restores the eflags register on x86
3879 ** fixed some lockups due to gc/thread interaction
3880 * fixed some bugs revealed by Paul Dietz' test suite:
3881 ** invalid dotted lists no longer raise a read error when
3882 *READ-SUPPRESS* is T
3883 ** signal an error if a symbol that names a declaration is used
3884 as the name of a type, or vice versa
3885 ** allow using the (declare (typespec var*)) abbreviation for
3886 (declare (type typespec var*)) with all type specifiers
3887 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3888 ** always return NIL from PPRINT-POP when OBJECT is NIL
3889 ** don't signal errors when pretty-printing malformed LABELS,
3890 FLET or MACROLET forms
3891 ** declarations in a DOLIST body are also in scope for the
3893 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3895 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3898 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3899 * fixed cross-compiler leakages that prevented building a 32-bit
3900 target with a 64-bit host compiler.
3901 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3902 opened with :IF-EXISTS :OVERWRITE.
3903 * fixed bug 281: error for an invalid qualifier in a short-form method
3904 combination method is not signalled until the faulty method is called.
3905 * bug fix: iteration variable type inferrer failed to deal with open
3906 intervals. (reported by Alan Shields)
3907 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3908 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3909 or more runtime options were provided to the sbcl binary.
3910 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3911 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3912 * optimization: there's now a fast-path for fixnum arguments in the
3913 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3914 * optimization: the code generated on x86-64 is more compact thanks
3915 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3916 * bug fix: floating-point exception handling now partly works on
3917 x86-64. (Thanks to James Knight)
3918 * improvement to the MIPS backend from Thiemo Seufer: C-style
3919 64-bit long long arguments and return values to alien functions
3921 * fixed some bugs revealed by Paul Dietz' test suite:
3922 ** the type-error signalled from WARN has a filled-in DATUM slot.
3923 ** the type-error required when a stream is not associated with
3924 a file has the stream as its datum.
3925 ** type-errors on single-floats on x86-64 no longer have
3926 :INVALID-OBJECT as the datum
3927 ** the type-errors signalled for invalid function names now have
3928 a correct expected type
3929 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3930 for structures defined with a :TYPE. Documentation strings for
3931 typed structures are no longer immediately discarded
3932 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3933 broadcast streams and synonym streams. FILE-LENGTH now also works
3934 on broadcast streams.
3936 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3937 * incompatible change: the --noprogrammer option, deprecated since
3938 version 0.7.5, has been removed. Please use the equivalent
3939 --disable-debugger option instead.
3940 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3942 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3943 inoperational for a while now) has been completely removed.
3944 * null lexical environments are now printed as #<NULL-LEXENV>,
3945 significantly reducing the amount of clutter in typical backtraces.
3946 * documentation on weak pointers, finalization, and after GC hooks
3947 has been added to the manual.
3948 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3949 as other specialized array types, is much faster. SUBSEQ and
3950 COPY-SEQ on such arrays have also been sped up.
3951 * optimization: EQL is now more efficient when at least other argument
3952 is known to be of type (OR FIXNUM (NOT NUMBER)).
3953 * fixed bug: the runtime is now less vulnerable to changes in the
3954 size of the SBCL object on OS X, and virtual memory is reserved for
3955 all spaces that need to be at a fixed address.
3956 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3957 * fixed bug: finalizers and after GC hooks that cause consing are now
3959 * fixed bug: compiler error messages and summaries are now printed to
3960 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3961 * fixed inference of the upper bound of an iteration variable.
3962 (reported by Rajat Datta).
3963 * fixed bug 211e: calling local functions with duplicated constant
3964 keyword argument no longer causes a bogus style warning about an
3966 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3967 ftype declaration to be disregarded. (reported by Dave Roberts)
3968 * fixed bug 373: caused by erronous compilation of references to alien
3969 variables in the runtime on ppc/darwin.
3970 * fixed bug 376: CONJUGATE type deriver.
3971 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3972 (reported by Baughn on #lisp)
3973 * a cross-compiler bug on non-x86 platforms has been identified and
3974 fixed. (thanks to Bruno Haible)
3975 * improvements to the MIPS runtime code for increased stability.
3976 (thanks to Thiemo Seufer)
3977 * increased the maximimum compact environment size to allow
3978 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3979 * partial workaround for bug 135: don't name the function we're
3980 calling for hairy cases of EVAL, so as not to accumulate one environment
3981 entry per call to EVAL. (reported by Kevin Reid)
3982 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3983 * optimization: type testing for non-vector arrays should be faster.
3984 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3986 * bug fix: setting 31st element of a bit vector to zero did not work
3988 * bug fix: redefining a class definition which failed due to a
3989 previous accessor / function clash now works (but see BUGS entry
3990 #380 for more problems in this area). (thanks to Zach Beane)
3991 * the long form of DEFINE-METHOD-COMBINATION disables method group
3992 checking when given a single method group with pattern *. (thanks
3994 * on x86 compiler supports stack allocation of results of simple
3995 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3996 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3997 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3998 * fixed some bugs related to Unicode integration:
3999 ** the restarts for recovering from input and output encoding
4000 errors only appear when there is in fact such an error to
4002 * fixed some bugs revealed by Paul Dietz' test suite:
4003 ** MISC.549 and similar: late transformation of unsafe type
4004 assertions into derived types caused unexpected code
4006 ** SCALE-FLOAT type deriver is less wrong.
4007 ** type derivers for EXP, LOG and similar functions compute result
4008 types for complex arguments better.
4009 ** (MISC.563) CONJUGATE type deriver works for very restricted
4011 ** out-of-line type testers for character strings are available.
4012 ** EQUAL compiler transform understands specialness of objects
4014 ** accessing double-floats stored on the stack now works on x86-64.
4015 ** debugger internals could sometimes create invalid lispobjs,
4016 resulting in GC crashes.
4017 ** MISC.548: type check weakening can convert required type into
4019 ** initialization forms for bindings are not in scope of free special
4022 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
4023 * incompatible change: thread support for non-NPTL systems has
4024 been removed - locking is buggy and unreliable. A threaded
4025 SBCL build will now warn at startup and refuse to create
4026 new threads, unless futex support is detected in the kernel
4027 * incompatible change: the top level REPL now has only an ABORT
4028 restart associated with it, not TOPLEVEL and ABORT as it used to.
4029 TOP and TOPLEVEL are now available as debugger commands for
4030 returning to the top level.
4031 * incompatible change: forms evaluated in the REPL now use the
4032 global optimization policy.
4033 * incompatible change: user- and system-initialization files are
4034 no longer processed with LOAD, but by READ and EVAL; hence the
4035 global optimization policy, startup package, readtable, etc,
4037 * The .fasl file format number has been incremented because of
4038 various incompatible changes.
4039 * internal entry point details and argument counts no longer appear
4040 in backtraces unless explicitly requested by setting
4041 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
4042 * built-in and standard functions no longer have names like "top
4043 level local call to FOO".
4044 * fixed bug 32: functions defined in non-null lexical environments
4045 now have more legible printed representation
4046 * fixed bug 33: functions defined in non-null lexical environemnts
4047 are now more amenable to inspection by INSPECT.
4048 * workaround for bug 354: XEPs no longer appear in backtraces unless
4049 explicitly requested.
4050 * fixed bug: receiving the signal which results from attempting to
4051 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
4052 SIGBUS on other *BSDs) on architectures where the C stack is also
4053 the Lisp stack (x86 and x86-64) from foreign code no longer leads
4054 to debugger confusion or wild instability. (reported by Cheuksan
4056 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
4057 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
4058 (reported by Lutz Euler)
4059 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
4060 compiled code. (reported by Paul Dietz)
4061 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
4062 specialized parameter to a method to something that is not TYPEP
4063 the specializer is now possible.
4064 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
4065 face of package deletion.
4066 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
4067 pathname. (reported by David Tolpin on c.l.l)
4068 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
4069 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
4070 STRING-STREAM and FILE-STREAM, respectively.
4071 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
4072 than previously; in addition, its test suite is now run on build.
4073 (thanks to Luke Gorrie)
4074 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
4075 * optimization: added a immediate representation for single-floats
4077 * fixed some bugs revealed by Paul Dietz' test suite:
4078 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
4079 ** attempting to create a package with a colliding nickname causes
4080 correctable errors to be signalled.
4081 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
4082 ** several x86-64 backend bugs related to sign-extension of immediate
4085 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
4086 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
4087 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
4089 * fixed loading of multiply forward-referenced layouts.
4090 (thanks to Cheuksan Wang)
4091 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
4092 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
4093 (see COMPILE-FILE documentation for details of :PRINT option)
4094 * fixed bugs 19 and 317: fixed-format floating point printing is
4095 more accurate. This also fixes a bug reported by Adam Warner
4096 related to the ~@F format directive.
4097 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
4099 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
4100 dispatch table if the from-char is a dispatch macro character.
4101 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
4102 by the wordsize no longer ignore the last word. (reported by Lutz
4104 * fixed bug in type checking of dynamic-extent variables. (reported
4106 * optimization: sequence traversal functions use their freedom to
4107 coerce function designators to functions.
4108 * optimization: code with many calls to CLOS methods specialized on
4109 CLOS classes has had redundant type checks removed.
4110 * optimization: added declarations to speed up operations that access
4111 the internal character database (for example STRING-UPCASE)
4112 * optimization: comparison operations between floats and sufficiently small
4113 fixnums no longer create extra rationals
4114 * fixed some bugs related to Unicode integration:
4115 ** portions of multibyte characters at the end of buffers for
4116 character-based file input are correctly transferred to the
4117 start of the buffer at the next read.
4118 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
4119 passing it through to OPEN.
4120 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
4121 argument given to internal calls to OPEN.
4122 ** the built-in comment readers (introduced by character sequences
4123 ";" and "#|") are more forgiving to encoding errors; they will
4124 STYLE-WARN and then attempt to resync the stream at a character
4125 boundary. (thanks to Teemu Kalvas)
4126 * fixed some bugs in the x86-64 port:
4127 ** Negative short int return values from c-calls are sign-extended
4129 ** The stack is aligned to 16-bytes for c-calls, as required by
4130 the ABI. (thanks to Cheuksan Wang)
4131 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
4132 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
4133 for enums. (thanks to Vincent Arkesteijn)
4134 ** Multiple small optimizations and bugfixes for floating point
4136 * fixed some bugs revealed by Paul Dietz' test suite:
4137 ** Space, Tab, Linefeed, Return and Page have the invalid
4138 secondary constituent character trait.
4139 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
4141 ** WITH-INPUT-FROM-STRING should only update the index place on
4143 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
4144 works more reliably.
4145 ** Bit-array operations (BIT-AND and similar) worked incorrectly
4146 with one-dimensional arrays with fill pointers.
4147 ** TYPE-OF failed on a complex with an integer realpart and a
4149 ** compiler failure during type inference for the code of form
4150 (IF (EQL X (THE ...)) ...) (MISC.535).
4152 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
4153 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
4154 platform. The port supports 61-bit fixnums, large memory spaces
4155 and reloading shared object files.
4156 * enhancement: saving cores with foreign code loaded is now
4157 supported on ppc/Darwin in addition to the previously supported
4159 * enhancement: the statistical profiler now walks deeper into the
4160 call stack for more meaningful call-graphs and accrued time
4161 reports (x86/x86-64 only). It also now reports time spent in
4163 * enhancement: it is now possible to trace most individual methods
4164 of a generic function in addition to tracing the generic function
4166 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
4168 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
4169 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
4170 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
4171 produces an error. (thanks to Vincent Arkesteijn)
4172 * bug fix: NAMESTRING on pathnames with :WILD components in their
4173 directories works correctly. (thanks to Artem V. Andreev)
4174 * fixed bug 125: compiler preserves identity of closures. (reported
4176 * bug fixed: functions with &REST arguments sometimes failed with
4177 "Undefined function" when compiled with (DEBUG 3). (reported by
4179 * bug fix: overflow during compiling of setting element of a bit
4180 vector with constant index and value. (reported by Timmy Douglas)
4181 * build fix: fixed the dependence on *LOAD-PATHNAME* and
4182 *COMPILE-FILE-PATHNAME* being absolute pathnames.
4183 * on x86 compiler partially supports stack allocation of dynamic-extent
4185 * GO and RETURN-FROM do not check the extent of their exit points
4186 when compiled with SAFETY 0.
4187 * fixed some bugs related to Unicode integration:
4188 ** encoding and decoding errors are now much more robustly
4189 handled; it should now be possible to recover even from invalid
4190 input or output to the terminal. (thanks to Teemu Kalvas)
4191 ** provided a first cut at implementing STRING-TO-OCTETS and
4192 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
4193 ** altered the SB-MD5 contributed module slightly, changing the
4194 interface just enough for it to be supportable for builds where
4195 lisp characters are not eight bits.
4196 * fixed some bugs revealed by Paul Dietz' test suite:
4197 ** the FORMATTER-generated functions for ~V[ conditionals require
4198 the correct number of arguments.
4199 ** READ-FROM-STRING returns the mandated second value when applied
4200 to displaced strings.
4201 ** the #\Rubout and #\Backspace characters are treated as invalid
4202 constituent characters by the tokenizer.
4204 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
4205 * new feature: reloading changed shared object files with
4206 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4207 * new feature: references to foreign variables and functions
4208 can now be compiled and loaded before the corresponding shared
4209 object file is loaded, as long as the foreign definitions are
4210 available at runtime.
4211 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
4212 supported. (thanks to Dan Debertin)
4213 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
4214 just keywords. (thanks to Vincent Arkesteijn)
4215 * fixed bug #331: structure-class instances corresponding to
4216 DEFSTRUCT forms are now created eagerly.
4217 * fixed bug #345: backtraces from calls to undefined functions work
4218 on x86 as well. Related bug #61 is now also partially fixed on x86
4219 (backtraces from throws to unknown catch tags.)
4220 * bug fix: lambda-list parsing is now stricter vrt. order and number
4221 of lambda-list keywords.
4222 * bug fix: as specified by AMOP, an error is signalled if a
4223 class-option appears multiple times in a DEFCLASS form. (reported
4225 * bug fix: RANDOM can be compiled when the compiler derives the type
4226 of its numeric argument as a disjoint set of small integers.
4227 (reported by Paul Dietz)
4228 * bug fix: starting a core saved with shared objects loaded when
4229 those objects are not available no longer causes threaded SBCL to
4230 hang. (reported by Sean Ross)
4231 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
4233 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
4234 argument, which must always be NIL. (reported by Kalle Niemitalo)
4235 * bug fix: printing 1.0d+23 no longer results in an error.
4236 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
4237 * bug fix: structure slot setters preserve evaluation order. (thanks
4239 * fixed some bugs related to Unicode integration:
4240 ** RUN-PROGRAM can allow its child to take input from a Lisp
4241 stream. (reported by Stefan Scholl)
4242 ** ASDF-INSTALL successfully downloads .tar.gz files in all
4243 locales. (reported by Ken Causey)
4244 * fixed some bugs revealed by Paul Dietz' test suite:
4245 ** INCF, DECF and REMF evaluate their place form as specified in
4247 ** FORMATTER expands ~{ ~} iteration directives with V or #
4248 parameters correctly.
4249 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4250 consequent uses no arguments correctly.
4251 ** the system has a partial understanding of the (COMPLEX RATIO)
4253 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4256 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4257 * new feature: a build-time option (controlled by the :SB-UNICODE
4258 keyword feature, enabled by default) for building the system with
4259 support for the entire 21-bit character space defined by the
4261 * new feature: the system now has rudimentary external-format
4262 support; the primary user-visible change at this time is that
4263 characters with the high bit set (such as lower-case-e-acute) will
4264 print correctly to a terminal in a UTF-8 environment.
4265 * minor incompatible change: BASE-CHAR no longer names a class;
4266 however, CHARACTER continues to do so, as required by ANSI.
4267 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4268 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4269 has been moved to the SB-EXT package (temporarily re-exported from
4271 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4272 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4274 * fixed bug #351: better error-handlind and reporting for malformed
4276 * fixed bug #350: bignum-printing is now more memory-efficient,
4277 allowing printing of very large bignums, eg. (expt 2 10000000).
4278 (reported by Bruno Haible)
4279 * fixed bug #302: better primitive-type selection for intersection
4281 * fixed bug #308: non-graphic characters now all have names, as
4282 required. (reported by Bruno Haible)
4283 * bug fix: redefining a class with different superclasses now correctly
4284 removes it from the direct-subclasses of its previous superclasses.
4285 (reported by David Morse)
4286 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4287 new value now works. (reported by Bruno Haible)
4288 * bug fix: correct canonicalization of multiple non-standard slot
4289 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4290 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4291 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4292 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4293 now exists, an signals an error.
4294 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4295 during macroexpansion for non-iteration variables as well. (reported
4296 by Bruno Haible for CMUCL)
4297 * bug fix: Cyclic structures and unprintable objects in compiler
4298 messages no longer cause errors. (reported by Bruno Haible)
4299 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4300 and READ-FROM-STRING all now return a primary value of NIL if
4301 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4302 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4303 (reported by Bruno Haible for CMUCL)
4304 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4305 do not designate a condition. (reported by Bruno Haible for
4307 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4308 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4309 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4310 permitting resolution in favour of any of the conflicting symbols.
4311 (reported by Bruno Haible for CMUCL)
4312 * bug fix: EQUAL compiler optimizations is less aggressive on
4313 strings which can potentially compare true despite having distinct
4314 specialized array element types.
4315 * bug fix: unit enumerations can be defined without dividing by
4316 zero. (thanks to Vincent Arkesteijn)
4317 * FORMAT compile-time argument count checking has been enhanced.
4318 (report from Bruno Haible for CMUCL)
4319 * a partial workaround for the bug 262: the compiler does not try to
4320 inline-expand a local function doing RETURN-FROM from a deleted
4321 BLOCK. (thanks to Peter Denno for the bug report and to David
4322 Wragg for the simple test case)
4323 * fixed some bugs revealed by Paul Dietz' test suite:
4324 ** RENAME-PACKAGE allows all package designators as new package
4326 ** constraint propagation and lambda variable substitution are
4327 more cautious in dealing with partially deleted code.
4328 ** compiler sometimes lost reoptimization passes.
4329 ** CERROR, given a condition as condition designator, passes its
4330 remaining arguments to the continue format control without
4332 ** Case-altering FORMAT directives work correctly on non-ASCII
4334 ** The REAL type specifier handles bounds outside the floating
4335 point ranges without signalling FLOATING-POINT-OVERFLOW.
4336 ** Functions with IR1-transformations can create intercomponent
4337 references to global functions.
4338 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4340 ** FORMAT ~R treats a nil value for its first parameter correctly.
4342 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4343 * enhancement: saving cores with foreign code loaded is now
4344 supported on x86/NetBSD and sparc/Linux in addition to the previously
4345 supported platforms.
4346 * bug fix: on some platforms repeated installations caused multiple
4347 copies of HTML documentation to be installed -- should not happen
4348 any more. (reported by Stefan Scholl)
4349 * bug fix: parsing self-recursive alien record types multiple times
4350 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4351 original patch by Helmut Eller for CMUCL)
4352 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4353 (thanks to Richard Kreuter)
4354 * bug fix: defining classes whose accessors are methods on existing
4355 generic functions in other (locked) packages no longer signals
4356 bogus package lock violations. (reported by François-René Rideau)
4357 * bug fix: special variables as DEFMETHOD parameters no longer have
4358 associated bogus type declarations. (reported by David Wragg and
4360 * bug fix: read-write consistency on streams of element-type
4361 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4362 * bug fix: redefiniton of the only method of a generic function with
4363 no DEFGENERIC no longer emits a full WARNING. In addition,
4364 redefinition of generic functions with no DEFGENERIC to an
4365 incompatible lambda list now signals an error. (thanks to Zach
4367 * bug fix: DEFGENERIC now works even when there's a function of the
4368 same name in an enclosing lexical environment. (thanks to Zach
4370 * fixed compiler failure, caused by instrumenting code during
4371 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4372 * optimization: added loop analysis and improved register allocation
4373 * fixed some bugs revealed by Paul Dietz' test suite:
4374 ** POSITION on displaced vectors with non-zero displacement
4375 returns the right answer.
4376 ** (SIMPLE-STRING) is a valid type specifier for sequence
4378 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4380 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4381 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4383 ** The justification version of the FORMAT ~< directive treats
4384 non-zero minpad parameter correctly.
4386 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4387 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4388 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4389 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4390 the supported interface.
4391 * new feature: Single-stepping of code compiled with DEBUG 2 or
4392 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4393 * new feature: saving cores with foreign code loaded is now
4394 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4395 Timothy Moore's work for CMUCL)
4396 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4397 parameters to * instead of NIL if no initform is supplied.
4398 (reported by Johan Bockgaard)
4399 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4400 correctly when FUNCALL appears as the car of the form. Note:
4401 despite this FUNCALL forms are not currently subject to
4402 compiler-macro expansion. (port of Raymond Toy's fix for the
4403 same from CMUCL, reported by Johan Bockgaard)
4404 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4405 (thanks for Teemu Kalvas)
4406 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4407 case instead of terminating the iteration (thanks for Julian
4408 Squires, Sean Champ and Raymond Toy)
4409 * bug fix: incorrect expansion of defgeneric that caused a style
4410 warning. (thanks for Zach Beane)
4411 * bug fix: slot accessor effective method computation works properly
4412 for classes with multiple non-standard applicable methods on
4413 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4414 * on x86 compiler supports stack allocation of results of LIST and
4415 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4416 CMUCL implementation by Gerd Moellmann)
4417 * fixed some bugs revealed by Paul Dietz' test suite:
4418 ** FORMAT strings with both the ~<~:;~> form of the justification
4419 directive and pretty-printing directives cause an error.
4421 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4422 * incompatible change: the internal functions
4423 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4424 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4425 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4426 instead of the old functions.
4427 * new feature: on platforms where "dladdr" is available foreign
4428 function names now appear in backtraces. (based on Helmut Eller's
4430 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4431 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4433 * documentation: ASDF manual is now distributed with SBCL.
4434 * bug fix: SBCL can now load its contributed modules with REQUIRE
4435 even if the system-provided entries have been removed from
4436 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4438 * bug fix: backtraces involving undefined functions or assembly
4439 routines are more informative. (thanks to Brian Downing)
4440 * bug fix: mutually referent alien structures now work correctly.
4441 (reported by Rick Taube)
4442 * bug fix: structures defined by WITH-ALIEN can be referred to
4443 within other definitions in the same WITH-ALIEN.
4444 * bug fix: division operators (MOD, TRUNCATE and the like) with
4445 constant zero divisors and integer dividends no longer generate
4447 * bug fix: provide default methods for INPUT-STREAM-P and
4448 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4449 * bug fix: improve the detection and resolution of MOP metacycles
4450 (where effective method computation depends on the generic function
4451 having its effective method computed). (reported by Bruno Haible)
4452 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4453 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4454 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4455 * bug fix: pathnames with relative directory components can be
4456 represented relative to default pathnames.
4457 * optimization: in taking the GCD of bignums, reduce the two bignums
4458 to approximately the same size (using Euclid's algorithm) before
4459 applying the more sophisticated binary GCD. (thanks to Juho
4461 * optimization: COUNT on bitvectors now operates word-at-a-time.
4462 * optimization: ASH with a positive, but not necessarily constant,
4463 (leftwards) shift, when in a modular context, is compiled to a
4465 * fixed some bugs revealed by Paul Dietz' test suite:
4466 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4467 if the corresponding argument is NIL.
4468 ** FORMAT directives accepting a minpad parameter treat negative
4470 ** literal commas as character parameters to FORMAT directives are
4472 ** literal spaces directly after ~<Newline> directives within a
4473 format-logical-block (~:< ~@:>) do not induce :FILL-style
4474 conditional newlines.
4475 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4476 as specified: it no longer includes conditional newlines).
4477 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4479 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4480 :PER-LINE-PREFIX argument does not evaluate to a string.
4482 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4483 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4484 the manual for details; for now, package locks can be disabled by
4485 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4486 if no major problems are found then it is likely that they will be
4487 compiled in unconditionally.
4488 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4489 unsupported operators on all platforms. To load a shared library
4490 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4491 object file, link it into a shared library outside of SBCL and
4492 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4494 * bug workaround: ROOM T and the GC were not working together
4495 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4496 reporting facility aren't preserved. That reporting has been
4497 disabled, so now until and unless someone figures out how to make it
4498 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
4499 * minor incompatible change: as threatened around sbcl-0.8.0, the
4500 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
4501 The symbols are also exported from SB-PCL for backwards
4502 compatibility, but more so than before SB-PCL should be treated as
4503 an implementation-internal package.
4504 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
4506 * the SB-SPROF contrib now works on (most) non-x86 architectures.
4507 It is known as of this release not to work on the Alpha, however.
4508 * fixed bug #167: errors signalled due to illegal syntax in method
4509 bodies are now more legible.
4510 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4511 designators and can hence be used with TYPEP.
4512 * fixed bug #333: CHECK-TYPE now ensures that the type error
4513 signalled, if any, has the right object to be accessed by
4514 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4515 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4516 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4518 * fixed bug #334: programmatic addition of slots using specialized
4519 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4520 and :ALLOCATION :CLASS slots.
4521 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4522 float exponents. (rereported by Peter Seibel)
4523 * fixed a bug: #\Space (and other whitespace characters) are no
4524 longer considered to be macro characters in standard syntax by
4525 GET-MACRO-CHARACTER.
4526 * fixed bug: initialization of condition class metaobjects no longer
4527 causes an instance of the condition to be created. (reported by
4529 * fixed bug: it is now possible to have slots such that
4530 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4531 description is neither :INSTANCE nor :CLASS.
4532 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4533 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4534 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4535 non-standard SLOT-DEFINITION-ALLOCATION values.
4536 * fixed bugs: various race conditions handling exiting threads.
4537 CL-PPCRE's thread torture test now passes.
4538 * fixed arguably-a-bug: GC time proportional to number of threads in
4539 system even when most of them are idle
4540 * optimization: improved performance of BIT and SBIT on bit-vectors.
4541 * .fasl file incompatibility: The fasl file version number has
4542 been incremented because of changes associated with package locks.
4544 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4545 * minor incompatible change: the system no longer provides
4546 optimization hints (conditions which are TYPEP
4547 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4548 mode; these hints are still emitted when higher SPEED optimization
4550 * new contrib module: a sampling profiler (profiling by statistical
4551 sampling, rather than by instrumenting functions) is available as
4552 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4553 * the behaviour of the standard function ED is now customizeable by
4554 third parties through a hook variable: see ED's documentation
4555 string for information on the protocol.
4556 * the compiler no longer emits efficiency notes for (FUNCALL X)
4557 when the type of X is uncertain under default optimization
4559 * fixed bug 276: mutating a binding of a specialized parameter to a
4560 method to something that is not TYPEP the specializer is now
4562 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4563 exhibit the required behaviour on the x86 platform. (thanks to
4564 Peter van Eynde, Eric Marsden and Bruno Haible)
4565 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4566 even for difficult arguments. (reported by Peter Graves)
4567 * fixed bug 141a: the backquote printer now descends quoted
4569 * fixed another bug in backquote printing: no more destructive
4570 modification of the form's list structure. (reported by Brian
4572 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4573 move between its address being taken and the call to
4574 interrupt_thread, fixing a crashing race condition.
4575 * the SB-POSIX contrib implementation has been adjusted so that it
4576 no longer exhibits ridiculously poor performance when constructing
4577 instances corresponding to C structs.
4579 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4580 * minor incompatible change: the sb-grovel contrib now treats C
4581 structures as alien (in the sense of SB-ALIEN) objects rather than
4582 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4583 has implications for memory management of client code
4584 (sb-grovel-returned objects must now be manually managed) and for
4585 type safety (alien objects now have full types).
4586 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4587 used to control emission of compiler diagnostics, rather than the
4588 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4589 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4590 quality should be considered deprecated.
4591 * install.sh now installs the user manual as well
4592 * (not quite a new documentable feature, but worth considering in
4593 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4594 beginnings of a semantically meaningful condition hierarchy is
4595 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4597 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4598 designator as the defaults argument.
4599 * fixed bug: Displaced arrays whose displaced-to array has become
4600 too small now cause ARRAY-DIMENSION to signal an error, providing
4601 for safer bounds-checking. (reported by Bruno Haible)
4602 * fixed bug: DEFCLASS slot definitions with identical :READER and
4603 :WRITER names now signal a reasonable error. (reported by Thomas
4605 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4607 * fixed bug: Invalid slot specification errors now print correctly.
4608 (thanks to Zach Beane)
4609 * fixed bug 320: Shared to local slot value transfers in class
4610 redefinitions now happen corrently from superclasses as
4611 well. (reported by Bruno Haible)
4612 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4614 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4615 improper lists correctly. (reported by Bruno Haible)
4616 * fixed bug 313: source-transform for <fun-name> was erroneously
4617 applied to a call of a value of a variable with name <fun-name>.
4618 (reported by Antonio Menezes Leitao)
4619 * fixed bug 307: The obsolete instance protocol ensures that
4620 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4621 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4622 remove dead unknown-values globs from the middle of the stack.
4623 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4624 easier to resume long computations after using *BREAK-ON-SIGNALS*
4625 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4626 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4627 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4628 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4629 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4630 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4632 * fixed a (fairly theoretical) bug in string printing: if
4633 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4634 does not have array-element-type equal to the most general string
4636 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4637 function name. (thanks to Nikodemus Siivola)
4638 * fixed bug: compile-time format string checker failed on
4639 non-closed ~{. (reported by Thomas F Burdick)
4640 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4641 don't warn on legal loop code involving more than one aggregate
4642 boolean. (thanks to Nikodemus Siivola)
4643 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4644 in keyword position to MAKE-PACKAGE was not being reported as
4646 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4647 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4649 * fixed bugs 280 and 312: the checking for multiple definitions in a
4650 file is less likely to become confused by uses of inline
4652 * fixed bug: the #S reader macro performs the keyword coercion
4653 specified for slot names. (reported by Kalle Niemitalo)
4654 * fixed bug: lambda lists may contain symbols whose names start with
4655 & but are not lambda-list-keywords; their occurrence triggers a
4657 * fixed bug 321: define-method-combination argument lambda lists do
4658 not cause invalid code to be generated when &optional or &aux
4659 variables have default values. (reported by Bruno Haible)
4660 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4661 have CLOS classes; this appears also to have fixed reported
4662 instability in stack exhaustion detection.
4663 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4664 MUFFLE-WARNING when no associated restart is present is now
4666 * optimization: rearranged the expansion of various defining macros
4667 so that each expands into only one top-level form in a
4668 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4670 * optimization: used a previously little-used slot in symbols to
4671 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4673 * fixed some bugs revealed by Paul Dietz' test suite:
4674 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4676 ** Fixed an optimization bug related to inheritance of initforms
4677 from local to shared slots.
4678 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4679 ** CAST optimizer forgot to flush argument derived type.
4680 ** print/read consistency on floats is now orders of magnitude
4681 more likely. (thanks also to Bruno Haible for a similar report
4683 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4684 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4685 for objects of type REAL. Make it so.
4686 ** SXHASH is specified (infelicitously) to respect similarity,
4687 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4688 it so. (thanks to Markus Ziegler)
4689 ** on the Alpha, the compiler succeeds in compiling functions
4690 returning a known number of arguments greater than 63.
4691 ** fixed handling of invalid NIL arguments in keyword position
4693 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4695 ** provided a readably-printable representation for RANDOM-STATE
4697 ** ensured that pathnames, where they have a namestring, always
4698 print using #P"..." syntax.
4700 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4701 * Support for the forthcoming 2.0 version of the NetBSD kernel
4702 running on x86 hardware has been added. (thanks to Perry
4703 E. Metzger most immediately, and others for their past work)
4704 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4705 current release version; SBCL's OpenBSD support had been broken
4706 since about the time of OpenBSD's switch to ELF binary format.)
4707 * [placeholder for DX summary]
4708 ** user code with &REST lists declared dynamic-extent, under high
4709 speed or space and low safety and debug optimization policy.
4710 * The manual has been converted to Texinfo format and the debugger
4711 chapter from the cmucl manual has been added.
4712 * A facility has been added to extract documentation strings from
4713 sbcl and store them as Texinfo-formatted snippets for inclusion in
4714 the manual (via Texinfo's @include directive)
4715 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4716 the test case to Dave Roberts)
4717 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4718 pointers. (reported by Sean Ross)
4719 * bug fix: PROFILE output is printed nicely even for large numerical
4720 values. (thanks to Zach Beane)
4721 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4722 greater than 32 handle EOF correctly.
4723 * bug fix: on X86 an immediate argument of the IMUL instruction is
4724 correctly printed in disassembly. (thanks to Lutz Euler)
4725 * bug fix: class slots in redefined classes preserve their old
4726 values. (thanks to Bruno Haible and Nikodemus Siivola)
4727 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4728 succeeds. (reported by Marco Baringer)
4729 * fixed some bugs revealed by Paul Dietz' test suite:
4730 ** READ-SEQUENCE now works on ECHO-STREAMs.
4731 ** RATIONALIZE works more according to its specification. (thanks
4734 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4735 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4736 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4737 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4738 should matter to you only if you rebind the printer control
4739 variables and then find you want different bindings in the
4740 debugger than in the ordinary execution of your program.)
4741 * The runtime build system has been tweaked to support building
4742 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4743 assembler and linker. (thanks to Nikodemus Siivola)
4744 * Unbound, undefined, undeclared variables now trigger full
4745 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4746 more often programmer error than deliberate exploitation of undefined
4748 * optimization: the hash algorithm for strings has changed to one
4749 that is less vulnerable to spurious collisions. (thanks to Juho
4751 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4752 needless bounds checking. (thanks to Juho Snellman)
4753 * optimization: implemented multiplication as a modular
4754 (UNSIGNED-BYTE 32) operation on the PPC backend.
4755 * fixed some bugs revealed by Paul Dietz' test suite:
4756 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4758 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4759 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4760 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4762 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4764 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4766 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4767 their output stream on EOF from read.
4768 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4769 have been read to end-of-file.
4770 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4772 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4773 description of determination of which consecutive characters
4775 ** Printing the "Space" character with escaping on now yields "#\\ ",
4776 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4777 ** Reading floating-point numbers with *READ-BASE* set to a number
4778 less than 10 works correctly.
4779 ** Reading floating-point numbers with *READ-BASE* set to a number
4780 more than 10 works correctly.
4781 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4782 the readtable currently in effect.
4784 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4785 * minor incompatible change: parsing of namestrings on a physical
4786 (Unix) host has changed; numbers after the final #\. in a
4787 namestring are no longer interpreted as a version field. This is
4788 intented to be largely invisible to the user, except that the
4789 meaning of the namestring "*.*.*" has changed: it now refers to a
4790 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4791 should usually be replaced by
4792 (make-pathname :name :wild :type :wild :version :wild)
4793 with the added benefit that this is more likely to be portable.
4794 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4795 option to OPEN now signals an error if the file being opened
4796 exists; this may have an impact on existing code.
4797 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4798 signals received, on the PowerPC platforms (both Linux and
4799 Darwin). (thanks to Pierre Mai for pointing out the location of
4801 * several fixes on OS X: The system now builds and runs cleanly on
4802 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4803 (thanks to Brian Mastenbrook)
4804 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4805 second-resolution: integer multiples of 1/3600 between -24 and 24.
4806 (thanks to Vincent Arkesteijn)
4807 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4808 type when called with 1 argument; PEEK-CHAR checked type of
4809 PEEK-TYPE only after having read first character from a
4810 stream. (reported by Peter Graves)
4811 * bug fix: the garbage collector now has much better locality
4812 behaviour, and in particular no longer treats all memory as being
4813 exhausted when many small objects point to each other in a deeply
4815 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4816 recognized as being TYPEP their class.
4817 * bug fix: the PUSHNEW documentation string has been corrected.
4818 (thanks to Vincent Arkesteijn)
4819 * bug fix: defaulting of the value for the last of an atypically
4820 large number of multiple values being bound was not being
4821 performed correctly on the Alpha or PPC platforms
4822 * optimization: implemented multiplication as a modular
4823 (UNSIGNED-BYTE 32) operation on the x86 backend.
4824 * optimization: SEARCH on simple-base-strings can now be open-coded.
4825 (see also contrib/compiler-extras.lisp for inspiration for
4826 teaching the compiler about the Boyer-Moore algorithm).
4827 * value, returned by MAX (and MIN) called with several EQUALP, but
4828 not EQL, arguments now does not depend on compiler settings.
4829 * fixed some bugs revealed by Paul Dietz' test suite:
4830 ** in stack analysis liveness information is propagated from
4831 non-local entry points.
4832 ** pathwise CAST removing failed when the CAST node did not start
4834 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4835 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4837 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4838 host is already defined.
4839 ** RENAME-FILE works on streams instead of signalling an internal
4841 ** PEEK-CHAR uses the current readtable when determining whether
4842 or not a character is whitespace.
4843 ** MERGE-PATHNAMES handles the case when the pathname does not
4844 specify a name while the default-pathname specifies a version.
4845 ** Pathnames now stand a better chance of respecting print/read
4847 ** Attempting to use standardized file system operators with a
4848 pathname with invalid :DIRECTORY components signals a
4850 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4852 ** DIRECTORY on logical pathnames is more correct.
4853 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4854 signal a TYPE-ERROR if their argument is not a stream.
4855 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4856 designator argument does not designate a stream.
4857 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4858 examining the synonym.
4859 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4861 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4862 element-type larger than ([UN]SIGNED-BYTE 32).
4864 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4865 * When built with the :SB-FUTEX feature, threaded builds now take
4866 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4867 for faster/more reliable mutex and condition variable support.
4868 * Incompatible change (but one you probably shouldn't have been using
4869 anyway): the interface and code for arbitrating between multiple
4870 threads in the same user session has been redesigned.
4871 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4872 error when called without an explicit environment argument.
4873 (thanks to Nikodemus Siivola)
4874 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4875 confused about their position. (thanks to Adam Warner and Gerd
4877 * bug fix: Pretty printing backquoted forms with unquotations in the
4878 argument list position of various code constructs such as LAMBDA
4879 now works correctly. (reported by Paul Dietz)
4880 * bug fix: Pretty printing unquotations no longer loses all
4881 stream position information.
4882 * optimization: performance of string output streams is now less
4883 poor for multiple small sequence writes.
4884 * optimization: performance of CSUBTYPEP in the presence of complex
4885 expressions involving CONS and NOT many times has been improved.
4886 (reported by Paul Dietz)
4887 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4889 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4890 streams for the REPL, for the debugger, and so on. (thanks to
4892 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4893 * fixed some bugs revealed by Paul Dietz' test suite:
4894 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4895 is ignored if it is too small, rather than propagating through
4896 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4897 ** extremely complex negations of CONS types were not being
4898 sufficiently canonicalized, leading to inconsistencies in
4900 ** VALUES tranformer lost derived type.
4902 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4903 * fixed a bootstrapping bug: the build process no longer assumes
4904 that the various BOOLE-related constants have the same value in
4905 host and target lisps. (noted by Paul Dietz' test suite on an
4906 SBCL binary built from CLISP)
4907 * The system can now be dynamically linked on the MIPS platform,
4908 which enables dynamic loading of foreign code from Lisp. (thanks
4909 to Ralf Baechle for discussions on the MIPS ABI)
4910 * The system now records debugging information for its own source
4911 files in a filesystem-position-independent manner, relative to
4912 the "SYS" logical host.
4913 * fixed a compiler bug: MV-LET convertion did not check references
4914 to the "max args" entry point. (reported by Brian Downing)
4915 * tweaked disassembly notes to be less confident about proclaiming
4916 some instruction as an LRA. (thanks to Brian Downing)
4917 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4918 now each have their own history, command character, and other
4919 characteristics. (thanks to David Lichteblau)
4920 * fixed some bugs revealed by Paul Dietz' test suite:
4921 ** compiler failure in compiling LOGAND expressions including a
4923 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4924 shift greater than 32.
4925 ** FLUSH-DEST did not mark blocks for type check regeneration.
4926 ** HANDLER-CASE failed to accept declarations in handler clauses
4927 in some circumstances.
4929 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4930 * New code in contrib/sb-introspect (still probably not entirely
4931 stable yet) provides some support for smart Lisp development
4932 environments like SLIME.
4933 * The conditions signalled for errors occurring when loading .fasl
4934 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4935 in a way which should help ASDF recover gracefully.
4936 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4937 stuff has been cleaned up. If you code contrib/ stuff, this might
4938 affect you, and you can look at contrib/README, contrib/STANDARDS,
4939 and/or the 0.8.4.27 diff to check.
4940 * In full calls the compiler now does not generate checks for declared
4941 argument types for all arguments.
4942 * various threading fixes
4943 ** and some experimental patches which didn't make it into
4944 the main tree for this release, but which are shipped in
4945 contrib/experimental-thread.patch as a possible fix for some
4946 failures (deadlock, spinning...) in GC-intensive multithreaded
4948 * fixed PPC build problem (source code incompatibility of different
4949 library versions): added offsetof() hackery which attempts to divine
4950 where glibc maintainers put uc_mcontext today
4951 * fixed bug 282: compiler does not trust type assertions while passing
4952 arguments to a full call.
4953 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4954 &OPTIONAL VALUES type parameter.
4955 * fix bug 214: algorithm for noting rejected templates is now more
4956 similar to that of template seletion. (also reported by rydis on
4958 * fixed bug 141b: printing backquoted information readably and prettily
4959 inserts a space where necessary.
4960 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4961 (CHARACTER 10) are now reported as errors, rather than propagated
4962 as unknown types. (reported by piso on #lisp)
4963 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4964 with values NIL and :ERROR. (thanks to Milan Zamazal)
4965 * fixed bug 191c: CLOS now does proper keyword argument checking as
4966 described in CLHS 7.6.5 and 7.6.5.1.
4967 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4968 longer raise an error; further, using a list as a for-as-arithmetic
4969 counter now raises a meaningful error.
4970 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4971 now understood by sequence creation functions such as MAKE-SEQUENCE
4973 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4974 a STRING-INPUT-STREAM.
4975 * compiler enhancement: SIGNUM is now better able to derive the type
4977 * type declarations inside WITH-SLOTS are checked. (reported by
4979 * fixed some bugs revealed by Paul Dietz' test suite:
4980 ** incorrect optimization of TRUNCATE for a positive first
4981 argument and negative second.
4982 ** compiler failure in let-convertion during flushing dead code.
4983 ** compiler failure while deriving type of TRUNCATE on an
4984 interval, containing 0.
4985 ** ASH of a negative bignum by a negative bignum count now returns
4987 ** intersection of CONS types now canonicalizes properly, fixing
4988 inconsistencies in SUBTYPEP.
4990 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4991 * incompatible change: The --disable-debugger command line
4992 option now clobbers the debugger at a more fundamental
4993 level, by redefining #'INVOKE-DEBUGGER instead of by
4994 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4995 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4996 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4997 enter the debugger REPL and then suffer recursive errors
4998 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4999 while under the new system, BREAK in --disable-debugger mode
5000 terminates the system just as an unhandled error would.
5001 * fixed compiler performance when processing loops with a step >1;
5002 * bug fix: DOCUMENTATION now retrieves generic function
5003 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
5004 support has been systematized, and now supports the methods
5005 specified by ANSI, along with a default method and a method for
5006 slot documentation. (reported by Nathan Froyd)
5007 * bug fix: effective methods associated with a generic function are
5008 no longer cached over a change of that generic function's method
5009 combination. (reported by Andreas Fuchs)
5010 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
5011 names a non-existent directory. (thanks to Andreas Fuchs)
5012 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
5013 the PPC platform, lead to stack corruption; this has been fixed.
5014 (reported by Rainer Joswig)
5015 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
5016 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
5017 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
5018 arithmetic in general, is now much more reliable on the PPC
5020 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
5021 platform now returns the right answer.
5022 * optimization: restored some effective method precomputation in
5023 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
5024 precomputation is now tunable.
5025 * optimization: compiler-internal data structure use has been
5026 reviewed, and changes have been made that should improve the
5027 performance of the compiler by about 20%.
5028 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
5029 simple-base-strings and simple-bit-vectors is improved.
5030 * optimization: the optimization of 32-bit logical and arithmetic
5031 functions introduced in version 0.8.3 on the x86 has been
5032 implemented on the mips, ppc and sparc platforms; an
5033 implementation of the same facility, but for 64-bit arithmetic,
5034 has been added for the alpha.
5035 * microoptimization: the compiler is better able to make use of the
5036 x86 LEA instruction for multiplication by constants.
5037 * bug fix: in some situations compiler did not report usage of
5038 generic arithmetic in (SPEED 3) policy.
5039 * bug 145b fix: compiler used wrong type specifier while converting
5040 MEMBER-types to numeric.
5041 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
5043 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
5044 index argument now works properly on the Alpha platform.
5045 * bug fix: floating point exception treatment on the Alpha platform
5047 * bug fix: FILE-POSITION works much better on string input and
5048 output streams. (thanks to Nikodemus Siivola)
5049 * bug fix: many threading/garbage collection symptoms sorted.
5050 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
5051 might be pseudo-atomic.
5052 * internal change: Stopping for GC is now done with signals not
5053 ptrace. GC is now done in whichever thread wanted it, instead of
5055 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
5057 * bug fix: result form in DO is not contained in the implicit
5059 * incompatible change: ICR structure is changed; the value part of
5060 CONTINUATION is now called LVAR; corresponding functions are
5061 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
5062 * added type deriver for ISQRT (thanks to Robert E. Brown).
5063 * bug fix: better support for loading from the command line when an
5064 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
5066 * fixed some bugs revealed by Paul Dietz' test suite:
5067 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
5068 ** ROUND and FROUND now give the right answer when given very
5069 small float arguments.
5070 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
5072 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
5073 ** (GCD 0 <negative-integer>) returned <negative-integer>.
5074 ** LCM should return a non-negative integer.
5075 ** PARSE-INTEGER returned the index of a terminator instead of the
5076 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
5077 ** PARSE-INTEGER returned an incorrect index being applied to a
5079 ** LCM with two arguments of 0 returns 0 rather than signalling
5081 ** unsigned addition of a 32-bit constant with the high bit set no
5082 longer causes an internal compiler error on the x86.
5083 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
5084 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
5085 with negative last argument.
5086 ** byte specifiers with zero size and position no longer cause
5087 an error during type derivation.
5088 ** bignum multiplication on the Alpha platform now returns the
5090 * porting: The system now builds on SuSE AMD64, although it still
5091 generates a 32-bit binary.
5092 * .fasl file incompatibility: The fasl file version number has
5093 been incremented (because of the changes to internal compiler
5094 data structures referred to above).
5096 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
5097 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
5098 more accurately, on the Darwin kernel running on PowerPC hardware.
5099 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
5100 * Compiler code deletion notes now signal a condition of type
5101 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
5102 an associated MUFFLE-WARNING restart.
5103 * The compiler now performs limited argument count validation of
5104 constant format strings in FORMAT, and where appropriate in ERROR,
5105 CERROR and WARN. (thanks to Gerd Moellmann)
5106 * New ASDF-INSTALL contrib can be used for automatic download and
5107 installation of third-party Lisp code from CCLAN or other sites
5109 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
5110 which forces another thread to execute a function supplied by the
5112 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
5113 now accept and act upon their :ELEMENT-TYPE keyword argument.
5114 (reported by Martin Atzmueller, Edi Weitz)
5115 * bug fix: FILE-POSITION now accepts position designators up to
5116 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
5117 is the greater. (thanks to Patrik Nordebo)
5118 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
5119 Kalle Olavi Niemitalo)
5120 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
5121 printable. (reported by Eric Marsden)
5122 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
5123 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
5124 * x86 bug fix in control stack exhaustion checking: now shows backtrace
5125 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
5126 (thanks to Stig Sandoe)
5127 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
5128 UNREAD-CHAR now correctly includes the unread character in the
5129 target sequence. (thanks to Gerd Moellmann)
5130 * bug fix in threaded builds: the system can now be suspended and
5131 resumed by shell job control with minimal disruption.
5132 * bug fixes in times and timezones >2038AD
5133 * better handling of "where is GNU make?" problem in build scripts
5134 (thanks to Nikodemus Siivola)
5135 * new optimization: inside a named function any reference to a
5136 function with the same name is considered to be a self-reference;
5137 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
5138 optimization quality.
5139 * new optimization on x86: logical functions and + now have
5140 optimized (UNSIGNED-BYTE 32) versions, which are automatically
5141 used when the result is truncated to 32 bits.
5142 * VALUES declaration is partially enabled.
5143 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
5144 * fixed some bugs revealed by Paul Dietz' test suite:
5145 ** The system now obeys the constraint imposed by
5146 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
5147 types form a lattice under type intersection.
5148 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
5149 ** ASSOC now ignores NIL elements in an alist.
5150 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
5151 and (1+ MOST-POSITIVE-FIXNUM) answers.
5152 ** The addition of a method with invalid qualifiers to a generic
5153 function does not cause an error to be signalled immediately;
5154 a warning is signalled, and the error is generated only on
5155 calling the generic function.
5156 * changed .fasl file version number, in part to add type codes for
5157 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
5158 obscure ANSI requirements
5160 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
5161 * fixed bug 148: failure to inline-expand a local function left
5162 garbage, confusing the compiler.
5163 * fixed bugs 3cd: structure slot readers perform type check if the
5164 slot can have an invalid value (i.e. it is either not initialized
5165 or can be written with a less specific slot writer).
5166 * bug fix: the compiler now traps array references to elements off
5167 the end of an array; previously, the bounds checking in some
5168 circumstances could go off-by-one.
5169 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
5171 * type declarations for array element types now obey the description
5172 on the CLHS page "Declaration TYPE", as per discussions on
5173 sbcl-help around 2003-05-08. This means that a declaration
5174 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
5175 declaration, all references to BAR will be asserted or assumed
5176 (with THE, so dependent on compiler policy) to involve objects of
5177 type FOO. Note that no such declaration is implied in
5178 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
5179 * declared types of functions from the "Conditions"
5180 chapter. (reported by Paul Dietz)
5181 * bug fix: CERROR accepts a function as its first argument.
5182 * bug fix: NTH an NTHCDR accept a bignum as index
5183 arguments. (reported by Adam Warner)
5184 * optimization: character compare routines now optimize comparing
5185 against a constant character. (reported by Gilbert Baumann)
5186 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
5187 argument now works properly on the MIPS platform.
5188 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
5189 * repeated evaluation of the same DEFSTRUCT, a slot of which is
5190 declared to have a functional type, does not cause an error
5192 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
5193 many :DEFAULT-INITARGS. (reported by Istvan Marko)
5194 * fixed bug: if last continuation of a deleted block has a
5195 destination, this destination should be deleted too. (reported by
5197 * fixed a bug in the bootstrap process: the host compiler's values
5198 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
5199 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
5200 test case from Patrik Nordebo)
5201 * improved the ability of the disassembler on the PPC platform to
5202 provide helpful disassembly notes.
5203 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
5204 the class in more cases than previously.
5205 * bug fix: FILE-POSITION now understands :START and :END for
5206 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
5207 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
5208 8) data. (thanks to David Lichteblau)
5209 * bug fix: it is possible to add a method to a generic function
5210 without lambda list.
5211 * bug fix: reader failed to signal END-OF-FILE inside an
5212 object representation. (reported by Nikodemus Siivola)
5213 * fixed some bugs revealed by Paul Dietz' test suite:
5214 ** LAST and [N]BUTLAST should accept a bignum.
5215 ** condition slot accessors are methods.
5216 ** (VECTOR NIL) is a subtype of STRING.
5218 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
5219 * minor incompatible change: some nonsensical specialized lambda
5220 lists (used in DEFMETHOD) which were previously ignored now signal
5222 * minor incompatible change: the system is now aware of the types of
5223 variables in the COMMON-LISP package, and will signal errors for
5224 most violations of these type constraints (where previously they
5225 were silently accepted).
5226 * minor incompatible change: COMPILE-FILE now uses the freedom
5227 afforded (ANSI 3.2.2.3) to use derived function types for
5228 functions defined in the same file. This also permits the system
5229 to warn on static type mismatches and function
5230 redefinition. (Currently it does not work with high DEBUG level.)
5231 * minor incompatible change: VALUES declaration is disabled.
5232 * When issuing notes, the compiler now signals a condition of type
5233 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
5234 restart for use in user handlers. It is expected that the
5235 COMPILER-NOTE condition will eventually become a condition
5236 supertype to a hierarchy of note types, which will then be
5237 handleable in a similar fashion. However, at the moment, no such
5238 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
5239 but it's an implementation detail, not a classification for the
5241 * Changes in type checking closed the following bugs:
5242 ** type checking of unused values (192b, 194d, 203);
5243 ** template selection based on unsafe type assertions (192c, 236);
5244 ** type checking in branches (194bc).
5245 * A short form of VALUES type specifier has ANSI meaning (it has
5246 increased the number of situations when SBCL cannot perform type
5248 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5249 keywords or constants is permissible.
5250 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5251 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5252 classes. (thanks to Antonio Martinez)
5253 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5254 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5255 argument to a pretty-print stream. Instead, it leaves any such
5256 operations to DESCRIBE-OBJECT methods.
5257 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5259 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5260 lambda lists. (thanks to David Lichteblau)
5261 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5262 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5263 (thanks to Gerd Moellmann)
5264 * fixed bug 246: increased compilation speed of long
5265 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5267 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5269 * DEFCONSTANT now throws a condition of type
5270 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5271 constant to a non-EQL value; CONTINUE and ABORT restarts
5272 respectively change and preserve the value.
5273 * fixed bug 63: The code walker, part of the implementation of CLOS,
5274 is now better at handling symbol macros.
5275 * bug fix: There is no longer an internal implementation type named
5276 CL:LENGTH. (reported by Raymond Toy)
5277 * bug fix: In macro-like defining macros/special operators the
5278 implicit block does not enclose the lambda list.
5279 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5280 enclosed in parentheses) are not suitable as type specifiers, and
5281 their use properly signals an error now.
5282 * bug fix: An argument count mismatch for a type specifier in code
5283 being compiled no longer causes an unhandled error at compile
5284 time, but signals a compile-time warning.
5285 * fixed simple vector readable printing
5286 * bug fix: DESCRIBE takes more care over whether the class
5287 precedence list slot of a class is bound before accessing it.
5288 (reported by Markus Krummenacker)
5289 * bug fix: FORMATTER can successfully compile pretty-printer format
5290 strings which use variants of the ~* directive inside.
5291 * bug fix: SEARCH now applies its TEST predicate to the elements of
5292 the arguments in the correct order. (thanks to Wolfhard Buss)
5293 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5294 in type inference. (thanks to Robert E. Brown)
5295 * bug fix: Reading in symbols with an explicit package name of ""
5296 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5297 * fixed some bugs revealed by Paul Dietz' test suite:
5298 ** NIL is now allowed as a structure slot name.
5299 ** Arbitrary numbers, not just REALs, are allowed in certain
5300 circumstances in LOOP for-as-arithmetic clauses.
5301 ** Multiple class redefinitions before slot access no longer
5302 causes a type error.
5303 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5304 association between the name and a class.
5305 ** Generic functions with non-standard method-combination and over
5306 five methods all of which return constants no longer return NIL
5307 after the first few invocations. (thanks to Gerd Moellmann)
5308 ** CALL-NEXT-METHOD with no arguments now passes the original
5309 values of the arguments, even in the presence of assignment.
5310 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5312 ** DISASSEMBLE works with closures and funcallable instances.
5313 ** ADD-METHOD now returns the generic function, not the new method.
5314 ** FIND-METHOD signals an error if the lengths of the specializers
5315 is incompatible with the generic function, even if the ERRORP
5317 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5318 which its argument is a member.
5319 ** DEFCLASS only redefines the class named by its class-name
5320 argument if that name is the proper name of the class;
5321 otherwise, it creates a new class.
5322 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5323 of the UNBOUND-SLOT condition to the name of the slot.
5324 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5325 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5326 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5327 SLOT-MAKUNBOUND in the specified fashion.
5329 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5330 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5331 cross-compilation host. As a consequence, we can now bootstrap our
5332 way up to SBCL starting with a bare gcc toolchain and human-readable
5333 source code (first the source to CLISP, then the source to SBCL).
5334 * A contributed module containing a partial implementation of the
5335 simple-streams interface has been included. (thanks to Rudi
5337 * A contributed module implementing the RFC1321 Message Digest
5338 Algorithm, known as MD5, has been included.
5339 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5340 no longer has any effect, as the code controlled by this feature
5341 has been deleted. (As far as we know, no-one has ever built using
5342 this feature, and its semantics were confused in any case).
5343 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5344 work on conditions (as required by the ANSI specification),
5345 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5346 expected behaviour on conditions. Users should note, however,
5347 that such behaviour is not required by the ANSI specification,
5348 and so use of this behaviour may render their code unportable.
5349 * fixed some bugs revealed by Paul Dietz' test suite:
5350 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5352 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5353 ** SXHASH on condition objects no longer returns NIL.
5354 ** :ALLOCATION :CLASS slots are better treated; their values are
5355 updated on class redefinition, and initforms inherited from
5356 superclasses are applied.
5357 ** REMOVE-METHOD returns its generic function argument even when
5358 no method was removed.
5359 ** SHARED-INITIALIZE now initializes the values of the requested
5360 slots, including those with :ALLOCATION :CLASS.
5361 ** ALLOCATE-INSTANCE now works on structure classes defined via
5362 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5364 ** SLOT-EXISTS-P now works on conditions, as well as structures
5366 ** MAKE-LOAD-FORM now has the required methods on
5367 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5368 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5369 keyword, and now implements the SLOT-NAMES argument.
5370 ** methods with &OPTIONAL arguments no longer allow too many
5371 arguments to be passed in the call without error.
5372 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5373 option is consistent with the required arguments of the generic
5374 function lambda list.
5375 * bug fix: REQUIRE accepts a string designator. (Thanks to
5377 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5378 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5379 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5380 * bug fix: The compiler now checks for duplicated variables in macro
5382 * bug fix: SETQ on globals returns the correct value.
5383 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5384 not a COMPILER-ERROR (followed by some other strange error on
5385 choosing the CONTINUE restart).
5386 * bug fix: make.sh and friends are now more consistent in the way that
5387 they look for GNU "make".
5389 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5390 * experimental native threads support (on x86 Linux >=2.4 only).
5391 This is not compiled in by default: you need to add :SB-THREAD to
5392 the target features. See the "Beyond ANSI" chapter of the manual
5394 * fix for longstanding nonANSIism: The old distinction between
5395 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5396 The return value from CL:FIND-CLASS is now a CLOS class, and
5397 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5398 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5399 * An interface to the MetaObject Protocol, as described in Kiczales,
5400 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5401 MIT Press, 1991, is available from the SB-MOP package.
5402 * incompatible change: the SB-PCL package should now be considered
5403 a private implementation detail, and no longer a semi-private MOP
5405 * minor incompatible change: due to rearrangement for threads, the
5406 control stack and binding stack are now allocated at arbitrary
5407 addresses instead of being hardcoded per-port. Users affected by
5408 this probably have to be doing advanced things with shared
5409 libraries, and will know who they are.
5410 * minor incompatible change: Previously, all --eval forms used were
5411 processed with READ before any of them were processed with EVAL.
5412 Now each --eval form is processed with both READ and EVAL before
5413 the next --eval form is processed. (Thus package operations like
5414 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5415 work as the user might reasonably expect.)
5416 * minor incompatible change: *STANDARD-INPUT* is now only an
5417 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5419 * minor incompatible change: Y-OR-N-P is now character-oriented,
5420 not line oriented. Also, YES-OR-NO-P now works without errors.
5421 (thanks to Antonio Martinez)
5422 * sb-aclrepl module improvements: an integrated inspector, added
5423 repl features, and a bug fix to :trace command.
5424 * Known functions, which cannot be open coded by the backend, are
5425 considered to be able to check types of their arguments. (fixing
5426 a bug report by Nathan J. Froyd)
5427 * fixed a bug in computing method discriminating functions: It is
5428 now possible to define methods specialized on classes which have
5429 forward-referenced superclasses. (thanks to Gerd Moellmann)
5430 * fixed evaluation order in optional entries (reported by Gilbert
5432 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5433 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5434 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5435 required-by-AMOP NAME argument, as well as CLASS and
5436 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5437 * fixed bug 20: DEFMETHOD can define methods using names that are
5438 not the proper names of classes to designate class specializers.
5439 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5440 Unix file descriptors, instead of blowing up. (thanks to Antonio
5442 * Garbage collection refactoring: user-visible change is that a
5443 call to the GC function during WITHOUT-GCING will not do garbage
5444 collection until the end of the WITHOUT-GCING. If you were doing
5445 this you were probably losing anyway.
5446 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5447 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5448 TYPEP the latter but not the former.
5449 * The compiler issues a full WARNING for calls to undefined functions
5450 with names from the CL package.
5451 * MAP-INTO for a vector destination is open coded. (reported by
5452 Brian Downing on c.l.l)
5453 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5454 documentation string.
5455 * fixed some bugs revealed by Paul Dietz' test suite:
5456 ** COPY-ALIST now signals an error if its argument is a dotted
5458 ** Condition slots are now accessed more correctly in the presence
5459 of multiple initargs for a given slot.
5460 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5461 exclude restarts of the same name associated with a different
5463 ** DEFCLASS of forward-referenced classes with another
5464 forward-referenced class in the superclasses list no longer
5466 ** Condition slots are now initialized once each, not multiple
5467 times. (thanks to Gerd Moellmann)
5468 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5470 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5471 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5472 arguments contain duplicated elements.
5473 ** RESTART-CASE understands local macros.
5474 ** RESTART-CASE associates exactly its own restarts with a condition.
5475 ** ENDP in safe mode checks its argument to be of type LIST.
5476 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5477 in question is unbound.
5478 ** Optimized MAKE-INSTANCE functions no longer cause internal
5479 assertion failures in the presence of duplicate initargs.
5480 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5481 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5482 propagated even in the ctor optimized implementation of
5484 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5486 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5487 * a better implementation of SXHASH on (simple) bit vectors,
5488 measured both in execution speed and in distribution of results
5489 over the positive fixnums, has been installed. Likewise, a better
5490 implementation of EQUAL for simple bit vectors is now available.
5491 * fixed CEILING optimization for a divisor of form 2^k.
5492 * fixed bug 240 (emitting extra style warnings "using the lexical
5493 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5494 by Antonio Martinez)
5495 * fixed SXHASH, giving different results for NIL depending on type
5496 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
5497 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
5498 variable. (found by Rolf Wester)
5499 * SBCL does not ignore type declarations for special
5500 variables. (reported by rif on c.l.l 2003-03-05)
5501 * some bug fixes in contrib/sb-aclrepl/
5502 * fixed some bugs revealed by Paul Dietz' test suite:
5503 ** a bug in the CONS type specifier, whereby the CAR and CDR
5504 types got intertwined, has been fixed;
5505 ** the type system is now able to reason about the interaction
5506 between INTEGER and RATIO types more completely;
5507 ** APPEND, [N]REVERSE and NRECONC check that those their
5508 arguments, which must be proper lists, are really so;
5509 ** An array specialized to be unable to hold elements has been
5510 implemented, as required -- yes, really -- by ANSI;
5511 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5512 on malformed property lists;
5514 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5515 * incompatible packaging change: in line with Unix convention,
5516 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5517 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5518 * REQUIRE and PROVIDE are now optionally capable of doing something
5519 useful. See the documentation string for REQUIRE.
5520 * infrastructure for a managed SBCL contrib system: contributed
5521 modules in this release include:
5522 ** the ASDF system definition facility;
5523 ** an interface to the BSD Sockets API;
5524 ** an ACL-like convenience interface to the repl;
5525 (thanks to Kevin Rosenberg)
5526 ** an implementation of ROTATE-BYTE, with efficient implementation
5528 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5529 gives a closer approximation to the right answer than previously.
5530 (thanks to Raymond Toy)
5531 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5532 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5533 optional environment arguments, as required by ANSI.
5534 * fixed bugs in other functions taking environment objects, allowing
5535 calls with an explicit NIL environment argument to be compiled
5537 * fixed bug 228: primary return values from
5538 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5539 COMPILE or FUNCTION.
5540 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5541 :TYPE will no longer signal errors on innocuous objects.
5542 * fixed bug 231b: SETQ is better at respecting type declarations in
5543 the lexical environment.
5544 * fixed a bug in DEFCLASS: classes named by symbols with no or
5545 unprintable packages can now be defined.
5546 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5547 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5548 * fixed compiler failure related to checking types of functions.
5549 (reported by Robert E. Brown)
5550 * the compiler is now much more consistent in its error-checking
5551 treatment of bounding index arguments to sequence functions: in
5552 (SAFETY 3) code, errors will be signalled in almost all cases if
5553 invalid sequence bounding indices are passed to functions defined
5554 by ANSI to operate on sequences.
5555 * fixed a bug in the build procedure: documentation of SBCL-specific
5556 packages is now preserved and available in the final Lisp image.
5557 * lifted FDEFINITION lookup out of loops in the implementation of
5558 many list operations. (thanks to Robert E. Brown)
5559 * fixed a bug in the reader: the #n# reader macro now works for
5560 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5561 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5562 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5563 E. Brown and Tony Martinez respectively)
5564 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5565 SLOT-BOUNDP: in particular, it is now able to optimize them much
5566 better, and is now not vulnerable to having packages renamed.
5567 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5568 always called when a slot is not present in an instance. (thanks
5570 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5571 longer signal an error on unreading a character following EOF on
5572 the previous constituent stream. (thanks to Tony Martinez)
5573 * fixed some bugs revealed by Paul Dietz' test suite:
5574 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5575 not just nonnegative fixnums;
5576 ** the logical bit-array operators such as BIT-AND now accept an
5577 explicit NIL for their "opt-arg" argument (to indicate a
5578 freshly-consed result bit-array);
5579 ** ELT now signals an error on an invalid sequence index in safe
5581 ** the type system is now cleverer about negations of numeric
5582 types, and consequently understands the BIGNUM and RATIO types
5584 ** the type system is now cleverer about the interaction between
5585 INTEGER and RATIO types: while bugs still remain, many more
5586 cases are accurately computed;
5587 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5588 if it is in the last clause;
5589 ** CONSTANTLY now correctly returns a side-effect-free function in
5591 ** DECLARE is no longer treated as a special-operator; in
5592 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5593 * incremented fasl file version number due to the change in the
5594 DEFSTRUCT-SLOT-DESCRIPTION structure.
5596 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5597 * minor incompatible change: code processed by the "interpreter" or
5598 EVAL now has a compilation optimization policy of (DEBUG 2)
5599 (changed from (DEBUG 1)) to improve debuggability of interactive
5600 development, and to allow the use of the debug RETURN command in
5602 * an experimental implementation of the RETURN command for the
5603 debugger has been included. (thanks to Frederik Kuivinen)
5604 * fixed bug 62: constraints were not propagated into a loop.
5605 * fixed bug in embedded calls of SORT (reported and investigated by
5607 * fixed some bugs revealed by Paul Dietz' test suite:
5608 ** printing and reading of arrays with some dimensions having
5609 length 0 (thanks to Gerd Moellmann);
5610 ** BOA constructor with &AUX argument without a default value does
5611 not cause a type error;
5612 ** CONSTANTP now returns true for all self-evaluating objects.
5614 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5615 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5616 accessors that are related by inheritance, as specified in the
5617 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5618 Valtteri Vuorikoski)
5619 * The compiler is now able to inline functions that were defined in
5620 a complex lexical environment (e.g. inside a MACROLET).
5621 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5623 * Support for the upcoming FreeBSD-5.0 release has been included.
5624 (thanks to Dag-Erling Smorgrav)
5625 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5626 effect when it is not in a toplevel context.
5627 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5628 stand a better chance of being correct. (thanks to Gerd
5630 * fixed bug in COERCE, which now signals an error on coercing a
5631 rational to a bounded real type which excludes the expected
5633 * The compiler is now able to derive types more accurately from the
5634 COERCE and COMPILE functions.
5635 * fixed bug 223: functional binding is considered to be constant
5636 only for symbols in the CL package.
5637 * fixed bug 231: SETQ did not check the type of a variable being set
5638 (reported by Robert E. Brown)
5639 * A new optimization for MAKE-INSTANCE has been included, fixing
5640 various bugs (including relating to :ALLOCATION :CLASS slots and
5641 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5643 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5644 ** As required by ANSI, LOOP now disallows anonymous collection
5645 clauses such as COLLECT I in conjunction with aggregate boolean
5646 clauses such as THEREIS (= I 1);
5647 ** LOOP now signals an error when any variable is reused in the
5648 same loop (including the potentially useful construct analogous
5649 to WITH A = 1 WITH A = (1+ A);
5650 ** IT is only a special loop symbol within the first clause of a
5651 conditional loop clause;
5652 ** LOOP with a typed iteration variable over a hashtable now
5653 signals a type error iff it should.
5654 * fixed some other bugs revealed by Paul Dietz' test suite:
5655 ** FILE-STREAM now names the class previously known as FD-STREAM;
5656 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5657 argument) no longer signals an error;
5658 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5659 of the slot symbol, rather than using the current package
5660 ((:CONC-NAME "") continues to intern the slot's name in the
5662 * incremented fasl file version number, because of the incompatible
5663 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5664 of the new implementation of DEFINE-COMPILER-MACRO.
5666 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5667 * Support for building SBCL for MIPS platforms running in
5668 little-endian mode has now been checked in, and basic
5669 functionality on said platforms verified.
5670 * minor incompatible change: PCL now records the pathname of a file
5671 in which methods and the like are defined, rather than its
5673 * minor incompatible change: TRUENAME now considers the truename of
5674 a file naming a directory to be the pathname with :DIRECTORY
5675 component indicating that directory.
5676 * minor incompatible change: a NAMED clause in the extended form of
5677 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5678 reason for the previous behaviour is unclear.
5679 * more systematization and improvement of CLOS and MOP conformance
5680 in PCL (thanks to Gerd Moellman and Pierre Mai):
5681 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5683 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5684 primary methods with no specializers;
5685 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5687 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5688 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5689 FORWARD-REFERENCED-CLASSes; error reporting on
5690 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5692 ** SXHASH on CLOS instances now uses a slot internal to the
5693 instance to return different numbers on distinct instances,
5694 while preserving the same return value through invocations of
5696 ** DEFMETHOD signals errors when methods with longer incongruent
5697 lambda lists are added to generic functions;
5698 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5699 CLASS, as specified in AMOP;
5700 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5701 on the order returned by the primary method for classes of
5702 class STANDARD-CLASS;
5703 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5704 * fixed some bugs shown by Paul Dietz' test suite:
5705 ** DOLIST puts its body in TAGBODY;
5706 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5708 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5709 value producing form;
5710 ** if more variables are given to PROGV than values, extra
5711 variables are bound and made to have no value;
5712 ** NSUBSTITUTE on list arguments gets the right answer with
5714 ** ELT signals an error of type TYPE-ERROR when the index argument
5715 is not a valid sequence index;
5716 ** LOOP signals (at macroexpansion time) an error of type
5717 PROGRAM-ERROR when duplicate variable names are found;
5718 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5719 ** FUNCALL of special-operators now cause an error of type
5721 ** PSETQ now works as required in the presence of side-effecting
5722 symbol-macro places;
5723 ** NCONC accepts any object as its last argument;
5724 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5726 ** loop-for-as-package does not require a package to be explicitely
5728 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5730 * fixed bug 166: compiler preserves "there is a way to go"
5731 invariant when deleting code.
5732 * fixed bug 172: macro lambda lists with required arguments after
5733 &REST arguments now cause an error to be signalled. (thanks to
5735 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5736 bug. (thanks to Matthew Danish)
5737 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5739 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5740 arguments are lexically rebound. (thanks to Gerd Moellmann and
5742 * fixed bug 194: error messages are now more informative when there
5743 is no primary method applicable in a call to a generic
5744 function. (thanks to Gerd Moellmann)
5745 * fixed bug in command line argument checking (thanks to Julian
5747 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5748 (thanks to Matthew Danish)
5749 * incremented fasl file version number, because of the
5750 SXHASH-related changes in the layout of CLOS data structures
5752 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5753 * minor incompatible change: The runtime (the Unix executable named
5754 "sbcl") is now much pickier about the .core files it will load.
5755 Essentially it now requires .core files to descend from the same
5756 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5757 as the runtime does. (The intent is to prevent the crashes which
5758 can occur, and which can even be reported as mysterious failures,
5759 when people patch the sources or change the build parameters
5760 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5761 sbcl and .core files.)
5762 * fixed bug: VALUES-LIST is no longer optimized away.
5763 * fixed bug 142: The FFI conversion of C string values to Lisp
5764 string values no longer conses excessively. (thanks to Nathan
5765 Froyd porting Raymond Toy's fix to CMU CL)
5766 * began to systematize and improve MOP conformance in PCL (thanks to
5767 Nathan Froyd, Gerd Moellman and Pierre Mai):
5768 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5770 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5771 ** FINALIZE-INHERITANCE is now called on class finalization;
5772 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5773 argument precedence order.
5774 * fixed bug 202: The compiler no longer fails on functions whose
5775 derived types contradict their declared type.
5776 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5777 so it can be non-toplevel.
5778 * The fasl file version number has changed (because of the new
5779 implementation of DEFMACRO).
5780 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5781 safe code, that any length requirement by their type-specifier
5782 argument is valid. The exceptions to this are described in bug
5784 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5785 functions now check the types of their inputs as required by ANSI.
5786 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5787 introduced symbol is DECLAREd to be SPECIAL.
5788 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5789 * fixed bug: :COUNT argument to sequence functions may be negative
5790 * fixed bug: body of DO-SYMBOLS may contain declarations
5791 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5792 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5793 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5794 symbol macro only once
5795 * fixed printing of call frame when argument list is unavailable
5796 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5797 * compiler no longer signals WARNING on unknown keyword
5800 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5801 * A beta-quality port to the mips architecture running Linux,
5802 based on the old CMUCL backend, has been made. It has been tested
5803 on a big-endian kernel, and works sufficiently well to be able to
5804 rebuild itself; it has not been tested in little-endian mode.
5805 * fixed an inconsistency between gencgc.c and purify.c which made
5806 dumping/loading .core files unreliable
5807 * fixed bug 120a: The compiler now deals correctly with IFs where
5808 the consequent is the same as the alternative, instead of
5809 misderiving the return type. (thanks to Alexey Dejneka)
5810 * fixed bug 113: Logical pathnames are now dumpable (the logical
5811 host is resolved at load-time, throwing an error if it is not
5813 * fixed bug 174: FORMAT's error message is slightly clearer when a
5814 non-printing character is used in a format directive.
5815 * fixed several bugs in compiler checking of type declarations, i.e.
5816 violations of the Python "declarations are assertions" principle
5817 (thanks to Alexey Dejneka)
5818 * fixed several bugs in PCL's error checking (thanks to Gerd
5820 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5822 * fixed bug in compilation of functions as first class values
5823 (thanks to Antonio Martinez-Shotton)
5824 * The compiler's handling TYPE-ERRORs which it can prove will
5825 inevitably happen at runtime has been cleaned up and corrected
5826 in several ways. (thanks to Alexey Dejneka)
5827 * improved argument type checking for various basic arithmetic
5828 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5829 lavished on them in the past that they can be compiled in many
5830 ways in different special cases
5831 * fixed bug 181: compiler checks validity of user supplied type
5833 * cleaned up code flushing in optimization: Function calls which
5834 should signal errors for safety purposes (e.g. which ANSI says
5835 should signal errors when their arguments are of incorrect type)
5836 are no longer optimized away.
5837 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5838 * incremented fasl file version number, because changes in the
5839 implementation of sequence functions like COERCE caused
5840 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5841 in old inline expansions) to become undefined. (Actually these
5842 changes were later undone, so we might very well be binary
5843 compatible with 0.7.7 after all, but leaving the version number
5844 incremented seemed like the simplest and most conservative
5847 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5848 * An alpha-quality port to the parisc architecture running Linux,
5849 based on the old CMUCL backend, has been made. This, even more so
5850 than the other backends, should be considered still a work in
5851 progress; known problems include that the Linux kernel in 64-bit
5852 mode does not propagate the correct sigcontext structure to
5853 userspace, and consequently SBCL on a parisc64 kernel will not
5855 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5856 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5857 suppressed.) Also now that the compiler is looking at declarations
5858 in the environment, it checks optimization declarations as well,
5859 and suppresses inlining when (> DEBUG SPEED).
5860 * More fixes have been made to treatment of floating point exception
5861 treatment and other Unix signals. In particular, floating point
5862 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5863 * The detection and handling of control stack exhaustion (infinite
5864 or very deeply nested recursion) has changed. Stack exhaustion
5865 detection is now done by write-protecting pages at the OS level
5866 and applies at all optimization settings; when found, a
5867 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5868 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5869 be caught using IGNORE-ERRORS.
5870 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5871 correctly when transforming recursive LABELS functions to LETs.
5872 (thanks to Alexey Dejneka)
5873 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5874 that are names of constants or global variables.
5875 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5876 alien routines with docstrings.
5877 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5878 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5880 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5881 (thanks to Eric Marsden)
5882 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5883 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5884 * Bug fix: The SPARC backend can now compile functions involving
5885 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5886 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5887 to a functions expecting a PATHNAME-DESIGNATOR.
5888 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5889 lambda lists. (thanks to Alexey Dejneka)
5890 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5891 functions so that EXPORTing the name of the class doesn't cause
5892 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5893 to Antonio Martinez for reporting this)
5894 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5895 constant-folded without failing an assertion. (thanks to Einar
5896 Floystad Dorum for reporting this)
5897 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5898 types are now dealt with more correctly by the compiler.
5899 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5900 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5901 behaviour analogous to RENAME-FILE. This puts its behaviour more
5902 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5904 * The fasl file version number has changed again. (because of the
5905 bug fix involving the names of PCL MAKE-INSTANCE functions)
5907 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5908 * bug fix: Floating point exceptions are treated much more
5909 consistently on the x86/Linux and PPC/Linux platforms.
5910 * Array initialization with :INITIAL-ELEMENT is now much faster for
5911 cases when the compiler cannot open code the array creation, but
5912 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5913 array accesses have also seen a speed increase.
5914 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5915 specified. (This was at the root of some bad interactions between
5916 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5918 * bug fix: Internal error arguments for undefined functions are now
5919 computed correctly on the PPC/Linux platform.
5920 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5921 Raymond Toy's patch for CMU CL)
5922 * Support for the Solaris 9 operating environment has been included
5923 (thanks to Daniel Merritt)
5924 * A very ugly but hopefully complete draft of the missing FFI chapter
5925 of the manual has been created by reformatting the corresponding
5926 CMU CL manual chapter into (currently very ugly and incoherent)
5927 DocBook and bringing it up to date for SBCL behavior. Thus, the
5928 manual is now essentially complete, at least by my extreme
5929 once-and-only-once standards, whereby it's acceptable to refer to
5930 the doc strings of SB-EXT functions as the primary documentation.
5931 * The fasl file version number has changed again, due to cleanup of
5932 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5933 is no longer a static symbol.)
5935 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5936 * SBCL now builds with OpenMCL (version 0.12) as the
5937 cross-compilation host; also, more progress has been made toward
5938 bootstrapping under CLISP.
5939 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5941 * bug 158 fixed: The compiler can now deal with integer loop
5942 increments different from 1; fixing this turned out also to fix
5944 * bug 169 fixed: no more bogus warnings about using lexical bindings
5945 despite the presence of perfectly good SPECIAL declarations (thanks
5946 to David Lichteblau)
5947 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5948 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5949 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5951 * bug 180 fixed: Method combination specifications no longer ignore
5952 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5953 * bug fix: Structure type predicate functions now check their argument
5954 count as they should.
5955 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5956 correctly. (thanks to Pierre Mai)
5957 * minor incompatible change: The --noprogrammer option is deprecated
5958 in favor of the new --disable-debugger option, which is very similar.
5959 (The major difference is that it takes effect at a slightly different
5960 time at startup, causing handling of errors in --sysinit and
5961 --userinit files will be affected differently.) The
5962 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5963 been added to allow this functionality to be controlled from ordinary
5964 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5965 maintainers, who might want to run non-interactive scripts to
5966 build SBCL cores which will later be used interactively.)
5967 * minor incompatible change: The LOAD function no longer, when given
5968 a wild pathname to load, loads all files matching that pathname.
5969 Instead, an error of type FILE-ERROR is signalled.
5971 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5972 * bug 147 fixed: The compiler preserves its block link/count
5973 invariants more correctly now so that it doesn't crash. (thanks
5975 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5977 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5978 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5979 no-value-for-this-character as NIL (as specified by ANSI).
5980 * HOST-NAMESTRING on physical pathnames now returns a string that is
5981 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5982 (thanks to Christophe Rhodes)
5983 * The Alpha port handles icache flushing more correctly. (thanks to
5985 * More progress has been made toward bootstrapping under CLISP. (thanks
5986 to Christophe Rhodes)
5987 * The fasl file format has changed again, because dynamic loading
5988 on OpenBSD (which has non-ELF object files) motivated some cleanups
5989 in the way that foreign symbols are transformed and passed around.
5990 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5991 is no longer treated as whitespace by the reader, but instead as
5992 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5993 |A
\7fB|, instead of A as it used to.
5995 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5996 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5997 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5998 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5999 this as of 0.7.1.45, but was left out of the previous news section
6000 (thanks to Dan Barlow)
6001 * SBCL now runs on the Solaris operating system on SPARC architectures
6002 (thanks to Christophe Rhodes's port of the CMUCL runtime)
6003 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
6004 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
6005 * SPARC backend cleanups, allowing builds of cores optimized for V8
6006 and V9 SPARCS, and also emission of code targeted to a particular
6007 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
6009 * SBCL is closer to bootstrapping under CLISP, thanks to various
6010 fixes by Christophe Rhodes.
6011 * The fasl file format has changed again, to allow the compiler's
6012 INFO database to support symbol macros.
6013 * The user manual (in doc/) is formatted into HTML more nicely.
6014 (thanks to coreythomas)
6015 * The system is smarter about SUBTYPEP relationships, especially
6016 those involving NOT types (including types such as ATOM which are
6017 represented internally using NOT types). Thus SUBTYPEP is less
6018 likely to return (VALUES NIL NIL) in general, and in particular
6019 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
6021 * The fasl file format has changed again, because the internal
6022 representation of types now includes a new slot to support the new
6023 SUBTYPEP-of-NOT-types logic.
6024 * (not a change in the main branch of SBCL, but a related prototype
6025 which can hopefully be merged into the main branch of SBCL in the
6026 future:) Brian Spilsbury has produced a Unicode-enabled variant of
6027 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
6028 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
6029 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
6030 dispatch macro character combinations. (thanks to Alexey Dejneka)
6031 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
6032 that superficially look like logical namestrings correctly.
6033 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
6035 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
6036 default supplied-p) for &optional and &key arguments. (thanks to
6039 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
6040 * incompatible change: The compiler is now less aggressive about
6041 tail call optimization, doing it only when (> SPACE DEBUG) or
6042 (> SPEED DEBUG). (This is an incompatible change because there are
6043 programs which relied on the old CMU-CL-style behavior to optimize
6044 away their unbounded recursion which will now die of stack overflow.)
6045 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
6046 for non-GENCGC systems has been increased to 20M (since that
6047 seems much closer to the likely performance optimum for modern
6048 systems than the old 4M value was)
6049 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
6050 and *DEBUG-PRINT-LEVEL*
6051 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
6052 of CMU CL's support for SPARC, and various endianness and other
6053 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
6054 * new syntactic sugar for the Unix command line: --load foo.bar is now
6055 an alternate notation for --eval '(load "foo.bar")'.
6057 ** The system now detects stack overflow and handles it gracefully,
6058 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
6059 optimization settings. (This is a good thing in general, and
6060 its introduction in this version should be particularly timely
6061 for anyone whose code fails because of suppression of tail
6063 ** The system now hunts for the C variable "environ" in a more
6064 devious way, to avoid segfaults when the C library version differs
6065 between compile time and run time. (thanks to Christophe Rhodes)
6066 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
6067 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
6068 ** The compiler no longer issues bogus style warnings for undefined
6069 classes in the same source file as the DEFCLASSes which defined
6070 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
6072 ** fixes in CONDITION class precedence list for undefined function
6073 errors (thanks to Alexei Dejneka)
6074 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
6075 correctly. (thanks to Dan Barlow)
6076 ** portability fixes aiming at bootstrapping under CLISP (thanks
6077 to Dave McDonald and Christophe Rhodes)
6078 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
6079 ** fixes in type translation and and type inference (thanks to
6081 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
6082 ** various fixes in the new ports (thanks to Dan Barlow)
6083 * several changes related to debugging:
6084 ** suppression of tail recursion, as noted above
6085 ** stack overflow detection, as noted above
6086 ** The default implementation of TRACE has changed. :ENCAPSULATE T
6087 is now the default. (For some time encapsulation has been more
6088 reliable than the breakpoint-based :ENCAPSULATE NIL
6089 implementation, at least on X86 systems; and I just noticed that
6090 encapsulation also seems closer to the spirit of the ANSI
6093 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
6095 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
6096 up properly again. (There was a packaging bug in 0.7.0 which
6097 left their definitions in SB-SYS::LOAD-FOREIGN and
6098 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
6099 vital for most things which interface to C-level interfaces,
6100 like extensions working with sockets or databases or
6101 Perl-compatible regexes or whatever, and the need to fix
6102 this bug is the main reason that 0.7.1 was released so
6104 ** DEFGENERIC is now choosier about the methods it redefines, so that
6105 reLOADing a previously-LOADed file containing DEFGENERICs does
6106 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
6107 cycle now works as it should. (thanks to Alexey Dejneka)
6108 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
6109 fixed by Christophe Rhodes. (He actually submitted this patch
6110 months ago, and I delayed until after 0.7.0.)
6111 ** Bug 111 (internal compiler confusion about runtime checks on
6112 FUNCTION types) was fixed by Alexey Dejneka.
6113 * Some internal cleanups (getting rid of variables which aren't
6114 needed now that the byte interpreter is gone) caused the fasl
6115 file format number to change again.
6117 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
6118 * major incompatible change: The default fasl file extension, i.e. the
6119 default extension for files produced by COMPILE-FILE, has changed
6120 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
6122 ** There are many changes in the implementation of the compiler.
6123 SBCL is now essentially a compiler-only implementation of ANSI
6124 Common Lisp. EVAL still "interprets" a few special cases, but
6125 almost all the interesting cases are handled by creating
6126 a LAMBDA expression, calling COMPILE on it, then calling
6127 FUNCALL on the result.
6128 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
6129 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
6130 Since the code is newer, there might still be some new bugs
6131 (though not as many as before Martin Atzmueller's fixes:-). But
6132 the new code is substantially simpler and clearer, and hopefully
6133 any remaining bugs will be simpler, less fundamental, and more
6134 fixable then the bugs in the old code.
6135 ** The revised compiler is still a little unsteady on its feet.
6137 *** The debugging information it produces (particularly the names
6138 of FUNCTION objects) is sometimes much less useful than what
6139 the old compiler produced.
6140 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
6141 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
6142 within a MACROLET) has been temporarily weakened.
6143 ** There are new compiler optimizations for various functions:
6144 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
6145 FIND-IF-NOT, POSITION-IF-NOT, and FILL
6146 *** the math functions TRUNCATE, FLOOR, and CEILING
6147 *** the function-of-all-trades COERCE
6148 Mostly these should be transparent, but there's one
6149 potentially-annoying problem (bug 117): when the compiler
6150 inline-expands a function and does type analysis on the result,
6151 it can create control paths which have type mismatches, and
6152 when it can't prove that those control paths aren't taken,
6153 it will issue WARNINGs about the type mismatches. This is
6154 a particular problem in practice for the new sequence functions.
6155 It's not clear how this should be fixed, and for now, a
6156 workaround is given in the entry for 117 in the BUGS file.
6157 ** (Because of the interaction between the two previous items --
6158 occasional inlining problems and new inline expansions -- some
6159 of the new sequence function optimizations won't really kick in
6160 completely until debugging information, and then inlining, are
6161 straightened out in some future version.)
6162 * minor incompatible changes:
6163 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
6164 DIRECTORY no longer implicitly promotes NIL slots of its
6165 pathname argument to :WILD. In particular, when you ask for the
6166 contents of a directory (which you used to be able to do without
6167 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
6168 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
6169 ** changes in behavior that ANSI explicitly defines to be
6170 implementation dependent:
6171 *** The new compiler-only implementation still conforms with ANSI,
6172 but acts a little different than before. Besides the obvious
6173 changes in performance tradeoffs (that the cost per form passed
6174 to EVAL has gone up, and the cost per form executed by EVAL
6175 has gone down), the behavior of the system changes a little
6176 because there are no longer any interpreted function objects.
6177 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
6178 e.g. doing COMPILE on the output of interactive DEFUN is
6180 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
6182 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
6183 has changed from (:CL) to NIL.
6184 *** The CHAR-NAME of unprintable ASCII characters which, unlike
6185 e.g. #\Newline and #\Tab, don't have names specified in the
6186 ANSI Common Lisp standard, is now based on their ASCII symbolic
6187 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
6188 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
6189 are no longer used for output.
6190 ** changes in internal implementation constants:
6191 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
6192 4 million. (If your application spends a lot of time GCing and
6193 you have a lot of RAM, you might want to experiment with
6194 increasing it even more.)
6195 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
6196 However, almost all old code should still continue to work without
6197 immediate update, as SB-C-CALL is now a (deprecated) nickname
6199 ** Old operator names in the style DEF-FOO are now deprecated in
6200 favor of new corresponding names DEFINE-FOO, for consistency with
6201 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
6202 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
6203 internal symbols, but a few supported extensions like
6204 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
6205 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
6206 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
6207 etc. as you get deeper into recursive calls to the debugger
6208 command loop, instead of the old "5]", "5]]", "5]]]"
6209 sequence. (I was motivated to do this when squabbles between
6210 ILISP and SBCL left me very deeply nested in the debugger. In the
6211 short term, this change will probably provoke more ILISP/SBCL
6212 squabbles, but hopefully it will be an improvement in the long run.)
6213 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
6214 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
6215 function, since declaiming return types involving aliens is
6216 (1) annoyingly messy to do by hand and (2) vital to efficient
6217 compilation of code which calls such functions.
6218 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
6219 longer reexported by the SB-EXT package. They're solely useful
6220 for alien code, so it seems more logical that you should get
6221 them from the SB-ALIEN package, not in SB-EXT.
6222 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
6223 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
6224 features. Instead, the code that they used to control is always
6225 built into the system.
6226 * many other bug fixes
6227 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
6228 advantage of the new EVAL-WHEN stuff and to clean them up in
6229 general, and they are now more ANSI-compliant in a number of
6230 ways. Martin Atzmueller is responsible for a lot of this.
6231 ** Besides the cleanups discussed above, Martin Atzmueller fixed
6233 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
6234 *** correct ERROR type for various file operations
6235 *** some fixes for Lisp streams
6236 *** DEFMETHOD syntax checking
6237 *** changing old weird representation of debug information as
6238 strings (which, among their other deficiencies, don't transform
6239 correctly when you rename packages, and don't change their
6240 print representation when you change things like *PACKAGE*
6241 and *PRINT-LENGTH*) to symbols and lists of symbols
6242 He also made several improvements and fixed several bugs in DESCRIBE.
6243 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6245 *** misbehavior of WRITE-STRING/WRITE-LINE
6246 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6247 and several other LOOP problems as well
6248 *** DIRECTORY when similar filenames are present
6249 *** DEFGENERIC with :METHOD options
6250 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6251 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6252 *** argument ordering in FIND with :TEST option
6253 *** mishandled package designator argument in APROPOS-LIST
6254 *** various problems in the backquote readmacro
6255 *** a bug in APROPOS
6256 *** probably some others that I'm not describing very well here,
6257 since the CVS log documents them by reference to sbcl-devel
6258 messages, and the SourceForge archives aren't working well.:-(
6259 ** Dan Barlow improved the Alpha port (and is making progress on the
6260 PPC port, for those of you who think different).
6261 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6262 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6263 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6264 continues to work on the SPARC port (for those of you in a position
6265 to look down upon our little PC-compatible boxes from a great height).
6266 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6267 and uses that copy, rather than the current dynamic value, when
6268 it's trying to decide whether to truncate output. Thus e.g.
6269 (let ((*print-lines* 50))
6270 (pprint-logical-block (stream nil)
6272 (let ((*print-lines* 8))
6273 (print (aref possiblybigthings i) stream)))))
6274 should now truncate the logical block only at 50 lines, instead of
6275 often truncating it at 8 lines, as it did before.
6276 * The doc/cmucl/ directory, containing old CMU CL documentation
6277 from the time of the fork, is no longer part of the base system.
6278 SourceForge has shut down its anonymous FTP service, and with it
6279 my original plan for distributing the old CMU CL documentation
6280 there. For now, if you need these files you can download an old
6281 SBCL source release and extract them from it.
6282 * The fasl file version number changed again, for dozens of reasons,
6283 some of which are apparent above.
6285 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6286 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6287 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6288 patch, so that DISASSEMBLE output is much nicer.
6289 * The code in the SB-PROFILE package now seems reasonably stable.
6290 I still haven't decided what the final interface should look like
6291 (I'd like PROFILE to interact cleanly with TRACE, since both
6292 facilities use function encapsulation) but if you have a need
6293 for profiling now, you can probably use it successfully with
6294 the current CMU-CL-style interface.
6295 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6296 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6297 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6298 link now returns the dangling link itself, and for similar
6299 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6300 link itself. (In these cases the old code signalled an error and
6301 looped endlessly, respectively.) Thus, DIRECTORY now works even
6302 in the presence of dangling and cyclic symbolic links.
6303 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6304 is now a supported extension again, since the consensus on
6305 sbcl-devel was that it can be useful for ordinary development
6306 work, not just for debugging SBCL itself.
6307 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6308 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6309 that currently-defined functions might be redefined later with
6310 different return types.
6311 * Hash tables can be printed readably, as inspired by CMU CL code
6312 of Eric Marsden and SBCL code of Martin Atzmueller.
6313 * better error handling in CLOS method combination, thanks to
6314 Martin Atzmueller porting Pierre Mai's CMU CL patches
6315 * more overflow fixes for >16Mbyte I/O buffers
6316 * A bug in READ has been fixed, so that now a single Ctrl-D
6317 character suffices to cause end-of-file on character streams.
6318 In particular, now you only need one Ctrl-D at the command
6319 line (not two) to exit SBCL.
6320 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6322 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6323 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6324 does the right thing.
6325 * The implementation of some type tests, especially for CONDITION
6326 types, is now tidier and maybe faster, due to CMU CL code
6327 originally by Douglas Crosher, ported by Martin Atzmueller.
6328 * Some math functions have been fixed, and there are new
6329 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6330 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6331 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6332 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6333 likely to be built into sbcl-0.7.0.)
6334 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6335 CL, ported to SBCL by Martin Atzmueller)
6336 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6337 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6338 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6339 * There's a new slam.sh hack to shorten the edit/compile/debug
6340 cycle for low-level changes to SBCL itself, and a new
6341 :SB-AFTER-XC-CORE target feature to control the generation of
6342 the after-xc.core file needed by slam.sh.
6343 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6344 COMPILE-FILE is no longer supported, so that now every function
6345 gets an entry point, so that block compilation looks a little
6346 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6347 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6348 returns the number of bytes consed since the system started,
6349 rather than the number consed since the first time the function
6350 was called. (The new definition parallels ANSI functions like
6351 CL:GET-INTERNAL-RUN-TIME.)
6352 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6353 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6354 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6355 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6356 * Fasl file version numbers are now independent of the target CPU,
6357 since historically most system changes which required version
6358 number changes have affected all CPUs equally. Similarly,
6359 the byte fasl file version is now equal to the ordinary
6362 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6363 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6364 is no longer recognized. I apologize for this, because it was
6365 listed in SB-EXT as a supported extension, but I found that
6366 its existing behavior was poorly specified, as well as incorrectly
6367 specified, and it looked like too much of a mess to straighten it
6368 out. I have enough on my hands trying to get ANSI stuff to work..
6369 * many patches ported from CMU CL by Martin Atzmueller, with
6370 half a dozen bug fixes in pretty-printing and the debugger, and
6371 half a dozen others elsewhere
6372 * fixed bug 13: Floating point infinities are now supported again.
6373 They might still be a little bit flaky, but thanks to bug reports
6374 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6375 as flaky as they were.
6376 * The --noprogrammer command line option is now supported. (Its
6377 behavior is slightly different in detail from what the old man
6378 page claimed it would do, but it's still appropriate under the
6379 same circumstances that the man page talks about.)
6380 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6381 are now supported, and enabled by default. Thus, the compiler can
6382 handle many floating point and complex operations much less
6383 inefficiently. (Thus e.g. you can implement a complex FFT
6385 * The compiler now detects type mismatches between DECLAIM FTYPE
6386 and DEFUN better, and implements CHECK-TYPE more correctly, and
6387 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6388 thanks to patches from Martin Atzmueller.
6389 * various fixes to make the cross-compiler more portable to
6390 ANSI-conforming-but-different cross-compilation hosts (notably
6391 Lispworks for Windows, following bug reports from Arthur Lemmens)
6392 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6393 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6394 fixed thanks to Pierre Mai's CMU CL patches.
6395 * fixes to keep the system from overflowing internal counters when
6396 it tries to use i/o buffers larger than 16M bytes
6397 * fixed bug 45a: Various internal functions required to support
6398 complex special functions have been merged from CMU CL sources.
6399 (When I was first setting up SBCL, I misunderstood a compile-time
6400 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6401 * improved support for type intersection and union, fixing bug 12
6402 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6403 more obscure bugs as well
6404 * some steps toward byte-compiling non-performance-critical
6405 parts of the system, courtesy of patches from Martin Atzmueller
6406 * Christophe Rhodes has made some debian packages of sbcl at
6407 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6408 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6409 stable, but are nonetheless usable. When he's ready, I'd be happy
6410 to add them to the SourceForge "File Releases" section. (And if
6411 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6412 * new fasl file format version number (because of changes in
6413 internal representation of (OR ..) types to accommodate the new
6414 support for (AND ..) types, among other things)
6416 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6417 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6419 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6421 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6422 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6423 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6424 * DESCRIBE now works on structure objects again.
6425 * Most function call argument type mismatches are now handled as
6426 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6427 know whether the function will be redefined before the call is
6428 executed. (The compiler could flag local calls with full WARNINGs,
6429 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6430 it doesn't keep track of enough information to know whether calls
6431 are local in this sense.)
6432 * Compiler output is now more verbose, with messages truncated
6433 later than before. (There should be some supported way for users
6434 to override the default verbosity, but I haven't decided how to
6435 provide it yet, so this behavior is still controlled by the internal
6436 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6437 src/compiler/ir1util.lisp.)
6438 * Fasl file format version numbers have increased again, because
6439 support for the Gray streams extension changes the layout of the
6440 system's STREAM objects.
6441 * The Gray subclassable streams extension now works, thanks to a
6442 patch from Martin Atzmueller.
6443 * The full LOAD-FOREIGN extension (not just the primitive
6444 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6445 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6446 but like most other programs, it defaults to copying the Unix
6447 environment from the original process instead of starting the
6448 new process in an empty environment.
6449 * Extensions which manipulate the Unix environment now support
6450 an :ENVIRONMENT keyword option which doesn't smash case or
6451 do other bad things. The CMU-CL-style :ENV option is retained
6452 for porting convenience.
6453 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6454 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6456 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6458 * A patch from Martin Atzmueller seems to have solved the SIGINT
6459 problem, and as far as we know, signal-handling now works cleanly.
6460 (If you find any new bugs, please report them!)
6461 * The system no longer defaults Lisp source file names to types
6462 ".l", ".cl", or ".lsp", but only to ".lisp".
6463 * The compiler no longer uses special default file extensions for
6464 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6465 seems to expect a single default extension for all compiled code,
6466 and there's no compelling reason to try to stretch the standard
6467 to allow two different extensions.) Instead, byte-compiled files
6468 default to the same extension as native-compiled files.
6469 * Fasl file format version numbers have increased again, because
6470 a rearrangement of internal implementation packages made some
6471 dumped symbols in old fasl files unreadable in new cores.
6472 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6473 many fewer weird special cases.
6474 * Bug #17 (differing COMPILE-FILE behavior between logical and
6475 physical pathnames) has been fixed, and some related misbehavior too,
6476 thanks to a patch from Martin Atzmueller.
6477 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6478 by Tim Moore, ported to SBCL by Martin Atzmueller.
6479 * Martin Atzmueller fixed several filesystem-related problems,
6480 including bug #36, in part by porting CMU CL patches, which were
6481 written in part by Paul Werkowski.
6482 * More compiler warnings in src/runtime/ are gone, thanks to
6483 more patches from Martin Atzmueller.
6484 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6487 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6489 * DESCRIBE now works on CONDITION objects.
6490 * The debugger now handles errors which arise when trying to print
6491 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6493 * The build system now uses an additional file, customize-target-features.lisp,
6494 to allow local modifications to the target *FEATURES* list. (The point of
6495 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6496 debugging features enabled, without having to worry about propagating it
6497 into everyone's system when I do a "cvs update".) When no
6498 customize-target-features.lisp file exists, the target *FEATURES* list
6499 should be constructed the same way as before.
6500 * fixed bugs in DEFCONSTANT ANSI-compatibility:
6501 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
6502 warn about behavior which is undefined under the ANSI spec. Note: This
6503 is specified by ANSI, but it's not very popular with programmers.
6504 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
6505 macro in the SBCL sources for an example of a workaround which you
6506 might use to make portable ANSI-standard code which does what you want.
6507 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
6508 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
6509 when it's used as a non-toplevel form. (This is required in order
6510 to implement the DEFCONSTANT-EQX macro.)
6511 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6512 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6513 funny things, due to bugs in the implementation of EVAL-WHEN
6514 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6515 non-toplevel DEFCONSTANTs are uncommon.)
6516 * The core file version number and fasl file version number have been
6517 incremented, because the old noncompliant DEFCONSTANT behavior involved
6518 calling functions which no longer exist, and because I also took the
6519 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6520 * fixed bug 1 (error handling before read-eval-print loop starts), and
6521 redid debugger restarts and related debugger commands somewhat while
6523 ** The QUIT debugger command is gone, since it did something
6524 rather different than the SB-EXT:QUIT command, and since it never
6525 worked properly outside the main toplevel read/eval/print loop.
6526 Invoking the new TOPLEVEL restart provides the same functionality.
6527 ** The GO debugger command is also gone, since you can just invoke
6528 the CONTINUE restart directly instead.
6529 ** The TOP debugger command is also gone, since it's redundant with the
6530 FRAME 0 command, and since it interfered with abbreviations for the
6532 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6534 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6535 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6536 some porting work by Martin Atzmueller)
6537 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6538 with a boatload of patches which he ported to SBCL. Now that those
6540 ** The system tries to make sure that its low-priority messages
6541 are prefixed by semicolons, to help people who like to use
6542 syntax highlighting in their ILISP buffer. (This patch
6543 was originally due to Raymond Toy.)
6544 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6545 patches originally written by Raymond Toy.
6546 ** The compiler understands coercion between single-value and
6547 multiple-VALUES type expressions better, getting rid of some very
6548 weird behavior, thanks to patches originally by Robert MacLachlan
6549 and Douglas Crosher.
6550 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6551 lambda lists, thanks to a patch originally by Pierre Mai.
6552 ** The system no longer bogusly warns about "abbreviated type
6554 ** The compiler gets less confused by inlining and RETURN-FROM,
6555 thanks to some patches originally by Tim Moore.
6556 ** The system no longer hangs when dumping circular lists to fasl
6557 files, thanks to a patch originally from Douglas Crosher.
6558 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6559 undefined function error.
6560 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6561 in structure slot initforms) for now, documented workaround instead:-|
6562 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6563 * fixed bug 5: added stubs for various Gray stream functions called
6564 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6565 installed, at least appropriate type errors are generated
6566 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6567 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6568 consistently in DEFMETHOD forms.
6569 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6570 it doesn't seem to affect SBCL after all
6571 * The C runtime system now builds with better optimization and many
6572 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6574 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6576 * The system is now under CVS at SourceForge (instead of the
6577 CVS repository on my home machine).
6578 * The new signal handling code has been tweaked to treat register
6579 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6580 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6581 downstream, e.g. in debug-int.lisp, has implicit dependencies
6582 on the unsignedness of integer representation of machine words,
6583 and that caused the system to bomb out with infinite regress
6584 when trying to recover from type errors involving signed values,
6585 e.g. (BUTLAST '(1 2 3) -1).)
6586 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6587 (This was one of the bugs Peter Van Eynde reported back in July.)
6588 * The system now uses code inspired by Colin Walters' O(N)
6589 implementation of MAP (from the cmucl-imp@cons.org mailing
6590 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6591 inline the MAP operation, and there is more than one
6592 sequence argument to the MAP call (so that it can't just
6593 do ETYPECASE once and for all based on the type of the
6594 single sequence argument). (The old non-inline implementation
6595 of the general M-argument sequence-of-length-N case required
6596 O(M*N*N) time when any of the sequence arguments were LISTs.)
6597 * The QUIT :UNIX-CODE keyword argument has been renamed to
6598 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6599 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6601 * Raymond Wiker's patches to port dynamic loading from Linux to
6602 FreeBSD have been added.
6603 * The BUGS file is now more nearly up to date, thanks in large part
6604 to Martin Atzmueller's review of it.
6605 * The debugger now flushes standard output streams before it begins
6606 its output ("debugger invoked" and so forth).
6607 * The core version number and fasl file version number have both
6608 been incremented, because of incompatible changes in the layout
6610 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6611 used to not be called for a saved Lisp image.)
6612 * Martin Atzmueller's version of a patch to fix a compiler crash,
6613 as posted on sbcl-devel 13 September 2000, has been installed.
6614 * Instead of installing Martin Atzmueller's patch for the
6615 compiler transform for SUBSEQ, I deleted the compiler transform,
6616 and transforms for some similar consing operations.
6617 * A bug in signal handling which kept TRACE from working on OpenBSD
6619 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6620 away by constant folding
6621 * The system now defines its address space constants in one place
6622 (in the Lisp sources), and propagates them automatically elsewhere
6623 (through GENESIS and the sbcl.h file). Therefore, patching the
6624 address map is less unnecessarily tedious and error-prone. The
6625 Lisp names of address space constants have also been systematized.
6626 * CVS tags like dollar-Header-dollar have been removed from
6627 the sources, because they have never saved me trouble and
6628 they've been source of trouble working with patches and other
6629 diff-related operations.
6630 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6631 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6633 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6635 * The system has been ported to OpenBSD.
6636 * The system now compiles with a simple "sh make.sh" on the systems
6637 that it's supported on. I.e., now you no longer need to tweak
6638 text in the target-features.lisp-expr and symlinks in src/runtime/
6639 by hand, the make.sh takes care of it for you.
6640 * The system is no longer so grossly inefficient when compiling code
6641 involving vectors implemented as general (not simple) vectors (VECTOR T),
6642 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6643 which dares to use the various sequence functions on non-simple
6644 vectors, takes less of a performance hit.
6645 * There is now a primitive type predicate VECTOR-T-P
6646 to test for the (VECTOR T) type, so that e.g.
6647 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6648 can now be compiled with some semblance of efficiency. (The old code
6649 turned the type declaration into a full call to %TYPEP at runtime!)
6650 * AREF on (VECTOR T) is still not fast, since it's still compiled
6651 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6652 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6653 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6654 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6655 without making full calls to SUBTYPEP at runtime.
6656 (Some analogous efficiency issues for non-simple vectors specialized to
6657 element types other than T, or for non-simple multidimensional arrays,
6658 have not been addressed. They could almost certainly be handled the
6659 same way if anyone is motivated to do so.)
6660 * The changes in array handling break binary compatibility, so
6661 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6662 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6663 instead of (VALUES T T).
6664 * By following the instructions that Dan Barlow posted to sbcl-devel
6665 on 2 July 2000, I was able to enable primitive dynamic object
6666 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6667 functionality is not implemented (since it calls ld to resolve
6668 library references automatically, requiring RUN-PROGRAM for its
6669 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6670 try to resolve library references) is now supported.
6671 * The system now flushes the standard output streams when it terminates,
6672 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6673 them at several other probably-convenient times, e.g. in each pass of
6674 the toplevel read-eval-print loop, and after evaluating a form given
6675 as an "--eval" command-line option. (These changes were motivated by a
6676 discussion of stream flushing issues on cmucl-imp in August 2000.)
6677 * The source transform for TYPEP of array types no longer assumes
6678 that an array whose element type is a not-yet-defined type
6679 is implemented as an array of T, but instead punts, so that the
6680 type will be interpreted at runtime.
6681 * There is now some support for cross-compiling in make.sh: each of
6682 the phases of make.sh has its own script. (This should be transparent
6683 to people doing ordinary, non-cross-compile builds.)
6684 * Since my laptop doesn't have hundreds of megabytes of memory like
6685 my desktop machine, I became more motivated to do some items on
6686 my to-do list in order to reduce the size of the system a little:
6687 ** Arrange for various needed-only-at-cold-init things to be
6688 uninterned after cold init. To support this, those things have
6689 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6690 symbols with such names are now uninterned after cold init).
6691 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6692 fasl files for cold load.
6693 ** Remove the old compiler structure pooling code (which used to
6694 be conditional on the target feature :SB-ALLOC) completely.
6695 ** Redo the representation of some data in cold init to be more compact.
6696 (I also looked into supporting byte compiled code at bootstrap time,
6697 which would probably reduce the size of the system a lot, but that
6698 looked too complicated, so I punted for now.)
6699 * The maximum signal nesting depth in the src/runtime/ support code has
6700 been reduced from 4096 to 256. (I don't know any reason for the very
6701 large old value. If the new smaller value turns out to break something,
6702 I'll probably just bump it back up.)
6703 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6705 * Many, many bugs reported by Peter Van Eynde have been added to
6706 the BUGS list; some have even been fixed.
6707 * While enabling dynamic object file loading, I tried to make the
6708 code easier to understand, renaming various functions and variables
6709 with less ambiguous names, and changing some function calling
6710 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6711 * While trying to figure out how to do the OpenBSD port, I tried to
6712 clean up some of the code in src/runtime/. In particular, I dropped
6713 support for non-POSIX signal handling, added various comments,
6714 tweaked the code to reduce the number of compilation warnings, and
6715 renamed some files to increase consistency.
6716 * To support the new automatic configuration functionality in make.sh,
6717 the source file target-features.lisp-expr has been replaced with the
6718 source file base-target-features.lisp-expr and the machine-generated
6719 file local-target-features.lisp-expr.
6720 * fixed a stupid quoting error in make.sh so that using CMU CL
6721 "lisp -batch" as cross-compilation host works again
6723 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6725 * DESCRIBE no longer tries to call itself recursively to describe
6726 bound/fbound values, so that it no longer fails on symbols which are
6727 bound to themselves (like keywords, T, and NIL).
6728 * DESCRIBE now works on generic functions.
6729 * The printer now prints less-screwed-up representations of closures
6730 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6731 * A private symbol is used instead of the :EMPTY keyword previously
6732 used to mark empty slots in hash tables. Thus
6733 (DEFVAR *HT* (MAKE-HASH-TABLE))
6734 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6735 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6736 now does what ANSI says that it should. (You can still get
6737 similar noncompliant behavior if bang on the hash table
6738 implementation with all the symbols you get back from
6739 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6740 This breaks binary compatibility, since tests for equality to
6741 :EMPTY are wired into things like the macroexpansion of
6742 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6744 * There's now a minimal placeholder implementation for CL:STEP,
6745 as required by ANSI.
6746 * An obscure bug in the interaction of the normal compiler, the byte
6747 compiler, inlining, and structure predicates has been patched
6748 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6749 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6751 * Missing ordinary arguments in a macro call are now detected even
6752 when the macro lambda list contains &KEY or &REST.
6753 * The debugger no longer complains about encountering the top of the
6754 stack when you type "FRAME 0" to explicitly instruct it to go to
6755 the top of the stack. And it now prints the frame you request even
6756 if it's the current frame (instead of saying "You are here.").
6757 * As specified by ANSI, the system now always prints keywords
6758 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6760 * The default initial SIZE of HASH-TABLEs is now smaller.
6761 * Type information from CLOS class dispatch is now propagated
6762 into DEFMETHOD bodies, so that e.g.
6763 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6765 is now basically equivalent to
6766 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6767 (DECLARE (TYPE SINGLE-FLOAT X))
6769 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6770 operation, without having to do run-time type dispatch.
6771 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6772 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6773 * Since I don't seem to be making big file reorganizations very often
6774 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6775 is overflowing my ability to conveniently back them up), I've finally
6776 checked the system into CVS. (The CVS repository is on my home system,
6777 not at SourceForge -- putting it on SourceForge might come later.)
6778 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6779 high-level GC-NOTIFY-FOO functions send their output. (There's
6780 still very little control of where low-level verbose GC functions
6781 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6782 less than it used to -- the GC-NOTIFY-FOO functions are now under
6783 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6784 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6785 in only one place in the source code, and propagates it automatically
6786 everywhere that it's needed. Thus e.g. when I bump the version from
6787 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6788 * The C source files now include boilerplate legalese and documentation
6789 at the head of each file (just as the Lisp source files already did).
6790 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6791 to his page will be replaced with a link to his new CLiki service.
6793 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6795 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6796 * The build process now looks for GNU make under the default name "gmake",
6797 instead of "make" as it used to. If GNU make is not available as "gmake"
6798 on your system, you can change this default behavior by setting the
6799 GNUMAKE environment variable.
6800 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6801 can build without error under CMU CL.
6803 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6805 * There is now a partial SBCL user manual (with some new text and some
6806 text cribbed from the CMU CL manual).
6807 * The beginnings of a profiler have been added (starting with the
6808 CMU CL profiler and simplifying and cleaning up). Eventually the
6809 main interface should be through the TRACE macro, but for now,
6810 it's still accessed through vaguely CMU-CL-style functions and macros
6811 exported from the package SB-PROFILE.
6812 * Some problems left over from porting CMU CL to the new
6813 cross-compilation bootstrap process have been cleaned up:
6814 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6815 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6816 part when getting rid of the compiler *BACKEND* stuff.)
6817 ** The value of *NULL-TYPE* was screwed up, because it was
6818 being initialized before the type system knew the final
6819 definition of the 'NULL type. This screwed up several key
6820 optimizations in the compiler, causing inefficiency in all sorts
6821 of places. (I found it because I wanted to understand why
6822 GET-INTERNAL-RUN-TIME was consing.)
6823 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6824 PROCLAIM FTYPE information. Unfortunately this broke binary
6825 compatibility again, since now the forms output by DEFGENERIC
6826 to refer to functions which didn't exist in 0.6.3.
6827 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6828 can use the new (as of 0.6.3) transform for SOME into MAP into
6830 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6831 values to (INTEGER 0 1000000), so that the time code will no longer
6832 occasionally get blown up by Linux returning 1000000 microseconds
6833 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6834 its output conform to the ANSI spec. (Alas, this makes its output
6835 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6836 * A full call to MAP NIL with a single sequence argument no longer conses.
6837 * fixes to problems pointed out by Martin Atzmueller:
6838 * The manual page no longer talks about multiprocessing as though
6839 it were currently supported.
6840 * The ILISP support patches have been removed from the distribution,
6841 because as of version 5.10.1, ILISP now supports SBCL without us
6842 having to maintain patches.
6843 * added a modified version of Raymond Toy's recent CMU CL patch for
6844 EQUALP comparison of HASH-TABLE
6846 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6848 * The system still can't cross-compile itself with
6849 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6850 entails), but at least it can compile more of itself that way
6851 than it used to be able to, and various buglets which were uncovered
6852 by trying to cross-compile itself that way have now been fixed.
6853 * This release breaks binary compatibility again. This time
6854 at least I've incremented the FASL file format version to 2, so that the
6855 problem can be detected reliably instead of just causing weird errors.
6856 * various new style warnings:
6857 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6858 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6859 ** using the lexical binding of a variable named in the *FOO* style
6860 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6861 as specified by ANSI.
6862 * *RANDOM-STATE* is no longer automatically initialized from
6863 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6864 default behavior of the system is to repeat its behavior every time
6865 it's run. If you'd like to change this behavior, you can always
6866 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6867 old convention there was no comparably easy way to get the system to
6868 repeat its behavior every time it was run.
6869 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6870 FTYPE declarations has been removed, in favor of their ANSI
6871 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6872 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6873 the types of their sequence arguments can be determined at compile time.
6874 This is done through a new open code expansion for MAP which eliminates
6875 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6876 argument types can be determined at compile time.
6877 * The optimizer now transforms COERCE into an identity operation when it
6878 can prove that the coerced object is already of the correct type. (This
6879 can be a win for machine generated code, including the output of other
6880 optimization transforms, such as the MAP transform above.)
6881 * Credit information has been moved from source file headers into CREDITS.
6882 * Source file headers have been made more standard.
6883 * The CASE macro now compiles without complaining even when it has
6886 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6888 * (Note that the way that the PCL macroexpansions were rewritten
6889 to accommodate the change in DEFGENERIC below breaks binary
6890 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6891 not run under sbcl-0.6.2. Once we get out of alpha releases,
6892 i.e. hit release 1.0.0, we'll probably try to maintain binary
6893 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6894 and sbcl-1.4.4. Until then, however, it might be fairly common
6895 for maintenance releases to break binary compatibility.)
6896 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6898 * The reporting of unhandled signals has been changed to print some
6899 explanatory text as well as the report form. (Previously only
6900 the report form was printed.)
6901 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6902 it defines, so that the compiler no longer issues undefined function
6903 warnings for compiled-but-not-yet-loaded generic functions.
6904 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6905 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6906 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6907 section of the ANSI spec are supported.
6908 * The "" nickname for the "KEYWORD" package has been removed.
6909 The reader still handles symbol tokens which begin with a package marker
6910 as keywords, but it doesn't expose its mechanism for doing so in the
6911 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6912 * The system now issues STYLE-WARNINGs for contradictory TYPE
6913 proclamations. (Warnings for contradictory FTYPE proclamations would
6914 be nice too, but those can't be done usefully unless the type system
6915 is made smarter about FUNCTION types.)
6916 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6917 systematized, so that "*target-*.lisp is supposed to exist only on the
6918 target and imply that there's a related file which exists on the
6919 host, and *host-*.lisp is supposed to exist only on the host and imply
6920 that there's a related file which exists on the target. This involves a
6921 lot of renaming. Hopefully the acute confusion caused by the renaming
6922 will be justified by the reduction in chronic confusion..
6923 ** runtime-type.lisp -> early-target-type.lisp
6924 ** target-type.lisp -> late-target-type.lisp
6925 ** early-host-format.lisp -> early-format.lisp
6926 ** late-host-format.lisp -> late-format.lisp
6927 ** host-error.lisp -> misc-error.lisp
6928 ** early-error.lisp -> early-target-error.lisp
6929 ** late-error.lisp -> late-target-error.lisp
6930 ** host-defboot.lisp -> early-defboot.lisp
6931 ** code/misc.lisp -> code/target-misc.lisp
6932 ** code/host-misc.lisp -> code/misc.lisp
6933 ** code/numbers.lisp -> code/target-numbers.lisp
6934 ** code/early-numbers.lisp -> numbers.lisp
6935 ** early-host-type.lisp -> early-type.lisp
6936 ** late-host-type.lisp -> late-type.lisp
6937 ** host-typep.lisp -> typep.lisp
6938 ** load.lisp -> target-load.lisp
6939 ** host-load.lisp -> load.lisp
6940 ** host-disassem.lisp -> disassem.lisp
6941 ** host-insts.lisp -> insts.lisp
6942 ** byte-comp.lisp -> target-byte-comp.lisp
6943 ** host-byte-comp.lisp -> byte-comp.lisp
6944 ** host-signal.lisp -> signal.lisp
6945 ** host-defstruct.lisp -> defstruct.lisp
6946 ** late-target-type.lisp -> deftypes-for-target.lisp
6947 Furthermore, several other previously target-only files foo.lisp (e.g.
6948 hash-table.lisp and random.lisp) have been split into a target-and-host
6949 foo.lisp file and a target-only target-foo.lisp file, with their key type
6950 definitions in the target-and-host part, so that the cross-compiler will
6951 know more about target types.
6952 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6953 gone away. In their place are various *BACKEND-FOO* variables
6954 corresponding to the slots of the old structure.
6955 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6956 into the target SBCL has been fixed.
6957 * The chill.lisp system for loading cold code into a running SBCL
6959 * Support for the CMU CL "scavenger hook" extension has been removed.
6960 (It was undocumented and unused in the CMU CL sources that SBCL was
6961 derived from, and stale in sbcl-0.6.1.)
6962 * Various errors in the cross-compiler type system were detected
6963 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6964 (enabling various consistency checks). Many of them were fixed,
6965 but some hard problems remain, so the compiler is back to
6966 running without *TYPE-SYSTEM-INITIALIZED* for now.
6967 * As part of the cross-compiler type system cleanup, I implemented
6968 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6969 * I have started adding UNCROSS calls throughout the type system
6970 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6971 on cross-compiler input files will be able to go away, and various
6973 * CONSTANTP now returns true for quoted forms (as explicitly required
6976 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6978 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6979 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6980 (MAKE-LIST -1). In the longer term, it ought to become true
6981 that declarations are assertions even at SAFETY 1. For now, it's not
6982 quite true even at SAFETY 3, but it's at least more nearly true..
6983 (Note that this change seems to increases the size of the system by
6984 O(5%) and to decrease the speed of the compiler by 20% or more.)
6985 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6986 for the problem of printing dozens of lines of distracting information
6987 about low-level system machinery as part of the top stack frame
6988 on entry to the debugger when an undefined function was called.
6989 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6990 is not reset to COMMON-LISP-USER.
6991 * Compilation of stuff related to dyncount.lisp has been made conditional
6992 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6993 smaller. The various dyncount-related symbols have been moved into
6994 a new "SB-DYNCOUNT" package.
6995 * tty-inspect.lisp has been renamed to inspect.lisp.
6996 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6997 feature has gone away. (When we eventually port to other flavors of
6998 libc and/or Unix, we'll try to make the differences between flavors
6999 invisible at the user level.)
7000 * Various other *FEATURES* tags, and/or their associated conditionals,
7001 have been removed if obsolescent, or given better documentation, or
7002 sometimes given more-mnemonic names.
7004 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
7006 * tidied up "make.sh" script
7007 * tidied up system directory structure
7008 * better "clean.sh" behavior
7009 * added doc/FOR-CMUCL-DEVELOPERS
7010 * many many small tweaks to output format, e.g. removing possibly-confusing
7011 trailing #\. character in DESCRIBE-INSTANCE
7012 * (EQUALP #\A 'A) no longer signals an error.
7013 * new hashing code, including EQUALP hashing
7014 * tidied up Lisp initialization and toplevel
7015 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
7016 * command line argument processing
7017 * added POSIX-GETENV function to deal with Unix-ish environment variables
7018 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
7019 terminating SBCL on EOF
7020 * non-verbose GC by default
7021 * There is no more "sbcl" shell script; the sbcl file is now the C
7022 runtime executable (just like CMU CL).
7023 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
7025 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
7026 symbol and package information as Lisp native symbol and package objects
7027 instead of strings naming symbols and strings naming packages. This way,
7028 whenever packages are renamed (as in warm init), debug information is
7029 transformed along with everything else.
7030 * tweaked the optimization policy declarations which control the building
7031 of SBCL itself. Now, among other things, the system no longer saves
7032 source location debugging information. (This helps two problems at once
7033 by reducing SBCL size and by keeping SBCL from trying to look for its
7034 sources -- which may not exist -- when reporting errors.)
7035 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
7036 debugging and testing purposes
7037 * cleaned up printing, making the printer call PRINT-OBJECT for
7038 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
7039 methods, giving nearly-ANSI behavior
7040 * converted almost all special variables to use *FOO* naming convention
7041 * deleted PARSE-TIME functionality, since it can be done portably
7042 * moved some files out of cold init into warm init
7043 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
7045 * regularized formatting of source files
7046 * added an install.sh script
7047 * fixed ridiculous memory usage of cross-compiler by making
7048 compiler/alloc.lisp not try to do pooling unless it can hook
7049 itself into the GC of the cross-compilation host. Now the system
7050 builds nicely on my old laptop.
7051 * added :SB-ALLOC in target-features.lisp-expr
7052 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
7053 was not implemented)
7054 * re-did condition handling and note reporting in the compiler. Notes
7055 are no longer handled by signalling conditions. Style warnings
7056 and warnings are handled more correctly and reported in such a way
7057 that it's easy to find one or the other in your output (so that you
7058 can e.g. figure out which of many problems caused COMPILE-FILE to
7060 * changed the severity of several compiler warnings from full WARNING
7061 to STYLE-WARNING in order to conform with the ANSI spec; also changed
7062 compiler note reporting so that it doesn't use the condition system
7063 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
7064 COMPILE-FILE command)
7065 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
7066 function. As a consequence, START-BLOCK and END-BLOCK declarations are
7067 no longer supported, since their implementation was deeply intertwingled
7068 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
7069 * removed bogus "support" for compiler macros named (SETF FOO), and
7070 removed the compiler macro for SETF INFO (but only after making a fool
7071 of myself on the cmucl-imp mailing list by posting a bogus patch for
7072 DEFINE-COMPILER-MACRO..)
7073 * Compiled files containing forms which have side effects on the Lisp
7074 reader (such as DEFPACKAGE forms) are now handled more correctly.
7075 (Compiler queuing of top level lambdas has been suppressed by setting
7076 *TOP-LEVEL-LAMBDA-MAX* to 0. )
7077 * deleted various currently-unused source files, e.g. gengc.lisp. They
7078 may be added back at some point e.g. when porting to other architectures,
7079 but until they are it's distracting to distribute them and to try to
7081 * deleted "UNCROSS couldn't recurse through.." style warnings, since
7082 there were so many of them they're just distractions, and UNCROSS is
7083 known to be able to handle the current sources
7084 * moved PROFILE functionality into TRACE, so that it will be clear
7085 how the wrapping and unwrapping of functions when you profile them
7086 interacts with the wrapping and unwrapping of functions when you
7087 trace them. (Actually, the functionality isn't there yet, but at least
7088 the interface specification is there. Hopefully, the functionality will
7089 arrive with some future maintenance release.)
7090 * removed host-oops.lisp
7091 * changed signature of QUIT function to allow UNIX-CODE argument
7092 * fixed READ-SEQUENCE bug
7093 * tweaked verbose GC output so that it looks more like the progress
7094 output that ANSI specifies for functions like LOAD
7095 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
7096 * added <http://sbcl.sourceforge.com> to the banner information printed by