1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.1.14:
3 * enhancement: sb-ext:save-lisp-and-die on Windows now accepts
4 :application-type argument, which can be :console or :gui. :gui allows
5 having GUI applications without an automatically appearing console window.
6 * bug fix: Windows applications without the console window no longer misbehave.
7 (patch by Wilfredo Velazquez, lp#1256034).
9 changes in sbcl-1.1.14 relative to sbcl-1.1.13:
10 * optimization: complicated TYPEP tests are less opaque to the type
11 propagation pass. (lp#1229340)
12 * optimization: [N]BUTLAST perform a single pass over the list. (lp#1245697)
13 * optimization: EQUALP on structures with raw slots (double-float/complex)
14 no longer conses and is faster.
15 * optimization: RESTART-CASE expands to more compact code.
16 Thanks to Jan Moringen. (lp#1249055)
17 * enhancement: Top-level defmethod without defgeneric no longer causes
18 undefined-function warnings in subsequent forms. (lp#503095)
19 * enhancement: Better error messages for system errors on Windows.
20 * enhancement: run-sbcl.sh is usefully handled by rlwrap. Thanks to William
22 * enhancement: new function SB-EXT:ASSERT-VERSION->= accepts a version
23 specification (multiple integer arguments) and signals a continuable error
24 if the current SBCL version is lower (older) than the specification.
26 * enhancement: better ARRAY-RANK result derivation. (lp#1252108)
27 * bug fix: EQUALP now compares correctly structures with raw slots larger
29 * bug fix: contribs couldn't be built on Windows with MinGW.
30 * bug fix: Better pathname handling on Windows. (lp#922117)
31 * bug fix: OPEN reports a more meaningful error when an existing file is
32 opened for output with :if-exists :new-version. Thanks to Philip
33 Munksgaard. (lp#455381)
34 * bug fix: DEFSTRUCTs with NIL as a slot name no longer cause strange
35 CLOS-related errors. (lp#633911)
36 * bug fix: GC deadlocks caused by concurrent consing on Windows.
38 changes in sbcl-1.1.13 relative to sbcl-1.1.12:
39 * optimization: better distribution of SXHASH over small conses of related
41 * other improvements to SXHASH:
42 ** use the whole of the positive-fixnum range for SXHASH of fixnums
43 * enhancement: The error message when calling an undefined alien function
44 includes the name of the function on x86-64.
45 * enhancement: sb-ext:run-program now supports :environment on Windows.
46 * enhancement: ASDF is no longer required to load contribs at runtime.
48 * enhancement: when called with a symbol, FIND-RESTART no longer calls
49 COMPUTE-RESTARTS, making it faster and cons less (lp#769615)
50 * enhancement: FIND-RESTART and COMPUTE-RESTARTS handle huge restart
51 clusters better in some cases
52 * enhancement: SOME/ANY/other quantification higher-order functions no
53 longer cons. (lp#1070635)
54 * bug fix: forward references to classes in fasls can now be loaded.
56 * bug fix: don't warn on a interpreted->compiled function redefinition
57 from the same location. (patch by Douglas Katzman, lp#1042405)
58 * bug fix: Create vectors of proper internal length when reading literal
59 vectors from FASLs. (Reported by Jan Moringen)
60 * bug fix: COMPILE can now successfully compile setf functions.
61 (Reported by Douglas Katzman)
62 * bug fix: run-program performs more correct escaping of arguments on
64 * bug fix: function-lambda-expression on generic functions returns the
66 * bug fix: (the [type] [constant]) now warns when [constant] matches
67 [type] except for the number of values. (Reported by Nathan Trapuzzano
69 * bug fix: signal errors in required cases of slot-definition initialization
71 * bug fix: run-sbcl.sh works better in the presence of symlinks on OS X.
72 (thanks to Stelian Ionescu, lp#1242643)
73 * bug fix: when given a restart object, FIND-RESTART checks whether the
74 restart is active and, when a condition is supplied, whether the restart
75 is associated to a different condition (lp#774410)
77 changes in sbcl-1.1.12 relative to sbcl-1.1.11:
78 * enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
79 shutdown(3). (thanks to Jan Moringen, lp#1207483)
80 * enhancement: document extensible sequences. (thanks to Jan Moringen,
82 * optimization: EQUAL and EQUALP transforms are smarter.
83 (thanks to Elias Martenson, lp#1220084)
84 * optimization: CHAR-EQUAL is faster for constant and base-char arguments.
85 * bug fix: probe-file now can access symlinks to pipes and sockets in
86 /proc/pid/fd on Linux. (reported by Eric Schulte)
87 * bug fix: SBCL can now be built on Solaris x86-64.
88 * bug fix: Floating point exceptions do not persist on Solaris anymore.
89 * bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
90 * bug fix: handle compiler-error in LOAD when it's not run from inside EVAL.
92 * bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base.
93 (thanks to Stephan Frank)
94 * bug fix: space allocation of result bignums in SB-GMP is more accurate.
95 (thanks to Stephan Frank, lp#1206191)
96 * bug fix: sb-safepoint can now reliably handle signal interruptions of
97 foreign code. (lp#1133018)
98 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
99 constructors no longer fails to merge actual and default initargs
100 (thanks to Jan Moringen, lp#1179858)
101 * bug fix: the compiler-macro for MAKE-INSTANCE when emitting "fallback"
102 constructors handles non-KEYWORD initialization arguments more correctly.
103 * bug fix: loading the SB-SIMPLE-STREAMS contributed module no longer
104 clobbers FILE-NAMESTRING. (thanks to Anton Kovalenko, lp#884603)
105 * bug fix: class definitions with CPLs inconsistent with their metaclasses
106 are less likely to destroy the object system's integrity. (lp#309076)
107 * bug fix: restart clause parsing in RESTART-CASE is more in line with the
108 standard. (lp#1203585, thanks to Jan Moringen)
109 * bug fix: silence a note from RESTART-CASE under high-SPEED optimization
110 settings. (lp#1023721)
111 * bug fix: getting the order of arguments to
112 SB-MOP:SET-FUNCALLABLE-INSTANCE-FUNCTION wrong produces a sensible error
113 rather than a failed AVER. (reported by Paul Nathan)
114 * bug fix: Parsing of &optional/&key/&rest arguments now never overwrites
115 arguments during copying on x86 and x86-64; it may still happen on other
116 platforms when there are more fixed arguments than stack slots.
117 (reported by Jan Moringen)
119 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
120 * enhancement: support building the manual under texinfo version 5.
122 * enhancement: Windows builds no longer display the "Kitten of Death" message.
123 A warning is instead appended to the regular banner, and may be muted with
124 --noinform. (lp#728247)
125 * enhancement: support building under new linker handling of syscalls under
126 NetBSD. (thanks to Robert Swindells)
127 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
128 (regression since 1.1.9)
129 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
130 compiler macro. (thanks to Douglas Katzman).
131 * bug fix: signal a warning when defining a setf-function when a
132 setf-expander is already present. (thanks to Douglas Katzman).
133 * bug fix: improved threading on PPC.
134 * bug fix: ROOM works again on Windows. (lp#1206456)
135 * bug fix: Streams were flushed even when there was one byte still left in
136 the buffer. (lp#910213)
137 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
138 either NIL or :ERROR. (reported by Jan Moringen)
140 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
141 * enhancement: ASDF has been updated to 3.0.2.
142 * optimization: stack frames are packed more efficiently on x86oids, which
143 ought to reduce the frequency of Methuselahn conservative references (it
144 certainly helps with gc.impure.lisp / BUG-936304 on x86).
145 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
146 recognized in modular arithmetic contexts, and compile to native negate,
147 rather than going through bignums only to keep the low bits.
148 * bug fix: Compiling potential modularic arithmetic forms does not cause type
149 errors when some integer types lack lower or upper bounds. (lp#1199127)
150 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
151 bitwidth before being used in a non-modular context. (lp#1199428)
152 * bug fix: Multiple catch/unwind blocks in a single function are now
153 allocated in the right stack order on win32. (lp#1072739)
155 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
156 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
157 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
158 * enhancement: disassemble now annotates some previously missing static
159 functions, like LENGTH.
160 * enhancement: clean.sh now also cleans doc/internals.
161 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
162 print a symbol with a package prefix.
163 * enhancement: The debugger and backtracing are more robust against buggy
164 PRINT-OBJECT methods.
165 * optimization: calls to static functions on x86-64 use less instructions.
166 * optimization: compute encode-universal-time at compile time when possible.
167 * optimization: when referencing internal functions as #'x, don't go through
168 an indirect fdefn structure.
169 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
170 * optimization: (mod fixnum) type-checks are performed using one unsigned
171 comparison, instead of two.
172 * optimization: enable more modular arithmetic transforms in the presence of
174 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
175 when the result is known to be negative.
176 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
177 * optimization: comparisons between rationals and constant floats or between
178 integers and constant ratios are now converted to rationals/integers at
180 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
181 * bug fix: problems with NCONC type derivation (reported by Jerry James).
182 * bug fix: EXPT type derivation no longer constructs bogus floating-point
183 types. (reported by Vsevolod Dyomkin)
184 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
185 addrinfo. (lp#1187041, patch by Jerry James)
186 * bug fix: uninitialized type-error conditions can now be printed.
188 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
189 listening, allowing several tests to run in parallel.
190 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
191 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
193 * bug fix: Specialised SIMD-PACK types can be negated.
194 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
195 reported by Eric Marsden)
196 * bug fix: FP return values from foreign calls are always rounded to single
197 or double float precision on x87.
198 * bug fix: Known-safe vector access on x86oids should not fail spuriously
199 when the index is of the form (+ x constant-positive-integer).
200 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
201 * bug fix: backtrace printer no longer tries to create very large lists when
202 the arg-count register is clobberred by other code. (lp#1192929)
203 * bug fix: x86 should never signal an FP exception while boxing an FP value,
204 a situation that lands us into ldb.
206 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
207 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
208 ROOM, plus a few SB-INTROSPECT functions) has been completely
209 rewritten; it may now exhibit different bugs than before.
210 * new feature: minimal runtime/compiler intrastructure support for SSE
211 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
212 feature :sb-simd-pack. This should enable intrinsics extensions as
213 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
214 for maintaining a branch for so long.
215 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
216 the working directory of the spawned process.
217 (lp#791800) (patch by Matthias Benkard)
218 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
219 stack-allocated on PPC.
220 * enhancement: "fixed objects" can now be stack-allocated on PPC.
221 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
222 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
223 also returns VOPs which do not translate any functions, and finds
224 defoptimizer types ir2convert and stack-allocate-result.
225 * enhancement: better type derivation for APPEND, NCONC, LIST.
227 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
228 heap in a manner similar to the GC rather than its previous ad-hoc
229 scheme, and is therefore no less and possibly more accurate.
230 * fixes and enhancements related to Unicode:
231 ** the character database information has been updated to Unicode 6.2;
232 ** support for canonical and compatibility decomposition of characters has
233 been added, along with support for primary composition;
234 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
235 NFKD) has been included;
236 ** querying the character database for code points not defined by Unicode
237 gives less wrong answers (lp#1178038, reported by Ken Harris)
238 * enhancement: print intermediate evaluation results for some ASSERTed
239 expressions. (lp#789497) (patch by Alexandra Barchunova)
240 * enhancement: x86-64 disassemblies are annotated with unboxed constant
241 values when there are references to (RIP-relative) unboxed constants.
242 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
243 of quadratically with the size of the input in the worst case.
245 * bug fix: handle errors when initializing *default-pathname-defaults*,
246 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
247 decoding errors, or directories being deleted.
248 * bug fix: Loading a core with a discontiguous dynamic space now correctly
249 computes the amount of dynamic space used.
250 * bug fix: disassembler missing ",8" on SHLD
251 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
252 that provide an "invalid" stack frame link for the signal handler
253 itself now use the saved-fp-and-pc mechanism to pick up from the stack
254 frame in the interrupt (signal) context. This is known to affect
255 threaded FreeBSD/x86-64.
256 * bug fix: some LOOP statements couldn't be compiled.
258 * bug fix: sb-sequence:dosequence works on literal vectors.
259 * bug fix: errors in generic arithmetic show the assembly routine's
260 caller on x86 and x86-64. (lp#800343)
261 * bug fix: Compile-time type errors should never result in COMPILE-FILE
263 * bug fix: Known bad local calls do not cause strange failures when
264 emitting or dumping code. (lp#504121)
265 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
266 codegen errors: type checks are inserted as necessary. (lp#1177703)
267 * bug fix: Unsigned modular arithmetic is correctly converted into signed
268 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
269 * bug fix: a combination of inlined local function with &optional and
270 recursion no longer causes undescriptive compiler errors. (lp#1180992)
271 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
272 when testing for non-zero-ness.
273 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
275 * bug fix: Type mismatch for the value of conditional expressions are
276 correctly reported when detected at compile-time, instead of complaining
277 about a constant NIL (similar for non-EQ-comparable catch tags).
278 * bug fix: Referring to INLINE global functions as values should not result
279 in a compilation failure. (lp#1035721)
280 * optimization: faster ISQRT on fixnums and small bignums
281 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
282 * optimization: On x86-64, the number of multi-byte NOP instructions used
283 for code alignment is now always minimal.
284 * optimization: On 64-bit targets, the compiler generates much faster
285 code for type checks for types known at compile time that are smaller
286 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
287 their COMPLEX variants.
288 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
289 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
290 * optimization: ROOM no longer conses so egregiously on non-x86oid
292 * optimization: associative bitwise operations reassociate patterns like
293 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
295 * optimization: quasiquote expressions now perform more constant folding,
296 instead of consing equal lists at runtime. (lp#1026439)
297 * optimization: local call analysis of inlined higher-order function
298 should converge more quickly, resulting in better code for complex
300 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
301 integer constants are handled more cleverly, especially when they
302 can be represented as sign-extended (signed-byte 32). (Based on a
303 patch by Douglas Katzman)
304 * optimization: IF/IF conversion should reliably result in sane code
305 when (some of) the results of the inner IF are always false or
307 * optimization: On x86oids, variable right shifts of machine words are
308 compiled into straight SAR/SHR, instead of going through the generic
311 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
312 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
314 * bug fix: :allocation slot option works for condition slots
316 * bug fix: redefining conditions does not lead to multiple evaluations of
317 hairy slot initfunctions anymore (lp#1164969)
318 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
320 * bug fix: function constants now work as initforms and default initarg
321 values of conditions (lp#539517)
322 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
323 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
324 * bug fix: no more bogus ## references when pretty printing backquoted
325 forms with non-trivial structure sharing. (lp#1161218)
326 * bug fix: Don't signal an error on (setf (documentation nil 'function)
327 "doc"). Signal a style-warning instead when trying to set documentation
328 of NIL for all other documentation types. (Reported by Zach
329 Beane; regression since 2e52fa05.)
330 * bug fix: modular arithmetic involving large constants and conditionals
331 should no longer result in spurious dead code elimination. (Reported by
333 * bug fix: our mach exception handler can seemingly called very early in
334 the program execution process on OS X 10.8.0. Try and handle that case
335 robustly, without potentially leaking mach ports too much.
336 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
338 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
339 * enhancement: the continuable error when defknown-ing over extant
340 fndb entries can be ignored by passing :overwrite-fndb-silently t
341 as a keyword argument to sb-c:defknown (after attributes). Useful
342 to allow defknown to be re-loaded. Use with :allow-other-keys t
343 for backward compatibility.
344 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
346 * bug fix: Prevent a make-array transform from modifying source forms
347 causing problems for inlined code. Thanks to Bart Botta.
348 (regression since 1.0.42.11-bis)
349 * bug fix: clear-output calls the correct gray stream routine,
350 sb-gray:stream-clear-output. (lp#1153257)
351 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
353 * bug fix: Better error messages for package operations (lp#1154776)
354 * bug fix: delete-package on a nonexistent package should signal a cerror.
355 (regression since 1.0.37.44).
356 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
357 (lp#1154946, lp#1072112)
358 * bug fix: compiling make-array no longer signals an error when the
359 element-type is an uknown type, a warning is issued instead.
360 Thanks to James Kalenius (lp#1156095)
361 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
362 produces wrong results for some inputs. (Thanks to Jan Moringen.)
365 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
366 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
368 * new feature: package local nicknames. See manual for details.
369 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
370 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
371 * enhancement: easier to use restarts for resolving name-conflicts
372 resulting from IMPORT, EXPORT, or USE-PACKAGE.
373 * enhancement: variant DEFPACKAGE forms now signal a full error with
374 restarts provided for resolving the situation. (lp#891351)
375 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
376 DEFPACKAGE forms can now signal a full error with restarts provided for
377 resolving the situation. See manual for details. (lp#891351)
378 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
379 (Thanks to Anton Kovalenko.) (lp#1102748)
380 * enhancement: backtrace improvements
381 ** secondary CLOS dispatch functions have better debug names (lp#503081)
382 ** easier to read method names in backtraces. See
383 SB-DEBUG:*METHOD-FRAME-STYLE*.
384 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
385 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
386 SB-DEBUG:BACKTRACE-AS-LIST.
387 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
388 information is available in less intrusive form as frame annotations.
389 * enhancement: SB-POSIX now provides MAP-ANON.
390 * enhancement: test-suite results are colorized, failures in red, unexpected
391 success in green. Works on Windows and on terminals with ANSI escape code
392 support. Can be disabled with --no-color.
393 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
394 (thanks to James M. Lawrence)
395 * bug fix: no more unused variable style warnings from RESTART-CASE
396 macroexpansion (lp#1113859)
397 * bug fix: no more unused variable style warnings when loading
398 sb-bsd-sockets.asd (lp#1114681)
399 * bug fix: deleting a package removes it from implementation-package
400 lists of other packages.
401 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
402 This does not fix the occasional "interrupt already pending" issue, though.
403 * bug fix: (setf (documentation 'x 'function)) and
404 (setf (documentation #'x t)) set documentation in different places.
405 (regression since 1.0.43.63)
406 * bug fix: build on newer glibc. (lp#1095036)
408 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
409 * optimization: LOOP expressions using "of-type character" have slightly
410 more efficient expansions.
411 * bug fix: very long (or infinite) constant lists in DOLIST do not result
412 in very long compile times or heap exhaustion anymore. (lp#1095488)
413 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
414 * bug fix: adjust-array ignored :initial-element for simple-vectors.
416 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
417 longer cause infinite loops (on circular data) or violate eqlity
418 constraints. (lp#1099708)
419 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
421 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
422 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
424 * enhancement: support for C-c to interrupt the foreground thread
425 on Windows. (Thanks to Anton Kovalenko.)
426 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
427 * enhancement: Safepoint builds on POSIX platforms can now optionally be
428 built without pseudo-atomic sequences and their run-time overhead.
429 * enhancement: Threads created outside of Lisp can enter Lisp through
430 alien callbacks and appear as Lisp threads for the duration of that
431 function invocation. On safepoint builds only.
432 * enhancement: Miscellaneous improvements to namestrings and underlying
433 calls to OS functions for file system access on Windows. (Thanks to
435 * enhancement: The MSI installer support for Windows now uses Windows
436 Installer XML at least version 3.5 and includes various usability
437 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
438 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
439 on Windows. (Thanks to Anton Kovalenko.)
440 * enhancement: The Windows backend now supports the x86-64 platform.
441 (Thanks to Anton Kovalenko.)
442 * bug fix: fasls are now once again directly executable (on platforms
443 supporting shebang lines, with a suitably-installed sbcl).
444 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
445 * bug fix: Fix CAS access to slots of direct instances of structure classes
446 in the presence of subclasses sharing the same conc-name.
447 * bug fix: Logical pathname namestrings on Windows have been changed to
448 be lower-case, to minimize differences between POSIX and Windows.
450 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
451 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
452 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
453 (NT 5.0) is no longer being maintained.
454 * notice: Starting with this version, SBCL on Windows no longer supports
455 building with disabled thread support.
456 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
457 * enhancement: New feature sb-dynamic-core allows the runtime to be
458 rebuilt or relocated without requiring changes to the core file on
459 all linkage table platforms. Required on Windows. (Thanks to Anton
461 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
462 * enhancement: I/O on Windows unnamed pipes is interruptible
463 asynchronously using interrupt-thread, timers when running on Windows NT
464 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
466 * enhancement: Support for the experimental safepoint-based stop-the-world
467 protocol on the PowerPC platform.
468 * bug fix: Non-blocking reads from the Windows console were not necessarily
469 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
470 * bug fix: stability of threads on Windows has been improved upon through
471 an updated stop-the-world protocol (thanks to Anton Kovalenko).
473 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
474 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
475 (COMPILE and COMPILE-FILE still do.)
476 * optimization: the SPARC backend now supports the precise generational
477 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
478 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
479 * enhancement: add experimental support for the SB-THREAD feature and the
480 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
481 Threads are enabled by default, and this version of SBCL is considered
482 to be the last and final release to officially support building with
484 * optimization: The compiler no longer rotates loops in some cases where
485 this transformation actually lead to worse code being generated.
486 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
487 symbol-macros by lexical bindings.
488 * bug fix: stack allocation was prevented by high DEBUG declaration in
490 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
491 (thanks to SANO Masatoshi)
492 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
493 :JUNK-ALLOWED was true.
494 * bug fix: type derivation inferred overly conservative types for
495 unions of array types. (lp#1050768)
497 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
498 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
499 source annotation of DISASSEMBLE output. Defaults to T.
500 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
501 WAIT-P argument added to WITH-RECURSIVE-LOCK.
502 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
504 * enhancement: Optional features (not enabled by default) allow the
505 use of signals for inter-thread synchronization to be reduced on certain
506 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
507 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
508 to test these experimental features. Known remaining bugs include minor
509 thread safety issues, less timely freeing of memory by GC, and certain
510 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
511 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
512 comparisons, particularly on almost-sorted inputs.
513 * bug fix: Reading floats with large exponents no longer takes too much time
514 before reporting that the exponent is too large.
515 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
516 correctly when the received datagram is larger than the provided buffer.
517 (lp#1023438, thanks to Robert Uhl)
518 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
519 a SYMBOL-VALUE form with a constant symbol argument.
520 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
521 into a DEFCAS defined place was used as the place.
522 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
523 for from bit-vectors.
524 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
525 lead to internal errors or crashes (lp#1058799).
526 * documentation: a section on random number generation has been added to the
529 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
530 * enhancement: implicit generic function warnings now specify the package
531 in which the new generic function is being created.
532 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
533 updates of CAS-able places (similar to Clojure's swap!).
534 * enhancement: run-program no longer decodes and re-encodes environment when
535 :environment argument is not provided. (lp#985904)
536 * enhancement: errors during compiler-macro expansion no longer cause
537 runtime errors, only a compile-time warning, otherwise behaving as if
538 the compiler macro had declined to expand.
539 * optimization: On x86-64, code alignment of block headers is done with
540 multi-byte NOPs now instead of repetitions of the single-byte NOP.
541 * optimization: MAP-INTO is substantially faster when the target sequence is
542 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
543 thanks to James M. Lawrence)
544 * optimization: the compiler no longer heap-conses to check exits in cases
545 where the exit function is dynamic extent, or when it can prove the exit
546 function cannot escape. (lp#1002534)
547 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
548 element type, and vectors that aren't SIMPLE-ARRAYs.
549 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
550 speed (around 1/3 the time in some cases), and a little better in terms of
551 comparison calls. (Thanks to Takeru Ohta)
552 * bug fix: On SPARC, a limitation on the number of code constants emittable
553 by the compiler has been lifted, allowing certain long functions to
554 compiled and assembled which had previously been unsupported; fixes
555 cl-bench on this ISA (lp#1008996).
556 * bug fix: potential for infinite recursion during compilation of CLOS slot
557 typechecks when dependency graph had loops. (lp#1001799)
558 * bug fix: error forms reported with some program-errors were not escaped
560 * bug fix: functions from EVAL are now on more equal footing with functions
561 from COMPILE. (lp#1000783, lp#851170, lp#922408)
562 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
563 objects as its :METHOD-COMBINATION argument, not just lists designating
564 method combinations. (lp#936513)
565 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
567 * bug fix: restore build on solaris/sparc. (lp#1008506)
568 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
569 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
570 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
571 as keyword arguments no longer accidentally match unevaluated symbols
573 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
574 parameter was zero, now it signals an error. (lp#905817, fixed since
576 * bug fix: run-program with :pty t no longer makes the pty as the process's
578 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
581 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
582 * RANDOM enhancements and bug fixes:
583 ** bug fix: the range and distribution of random integers could be
584 catastrophically wrong when the compiler derived the type of its
585 argument as a disjoint set of small integers.
586 ** bug fix: the distribution of random integers is now completely
587 uniform even when the specified limit is not a power of two.
588 (Previously some values could be about 0.1 % more probable than
589 others in the worst case.) (lp#309467)
590 ** RANDOM on large integer arguments is generally faster and conses
591 less than before; this is visible for fixnums above a length of
592 about 24 bits, but extremely so for bignums: the old implementation
593 used time and space quadratical in the size of the argument there,
594 the new one is linear.
595 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
596 main entry point, SB-EXT:QUIT is deprecated.
597 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
598 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
599 * enhancement: FASL loading no longer grabs the world-lock.
600 * enhancement: GENCGC reclaims space more aggressively when objects being
601 allocated are a large fraction of the total available heap space.
603 * enhancement: backtraces show the correct number of arguments for frames
604 called with too many arguments.
605 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
607 * enhancement: ASDF has been updated 2.21.
608 * optimization: fewer uses of full calls to signed modular functions.
610 * optimization: typechecking alien values is typically 5 x faster.
611 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
613 * bug fix: file compilation performance issues when dumping subtypes
614 of CHARACTER (lp#994487)
615 * bug fix: fixed disassembly of some SSE instructions on x86-64.
616 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
617 OPEN. (lp#969352, thanks to Kambiz Darabi)
618 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
620 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
621 classoid even if X was not the proper name of the class. (lp#941102)
622 * bug fix: declaration leakage between lexical environments due to careless
623 use of NCONC in MAKE-LEXENV. (lp#924276)
624 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
625 *default-pathname-defaults* contains NAME or TYPE components.
626 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
627 from CL package, e.g. (loop . 10).
628 * bug fix: run-program with existent or non-existent files for :output or
629 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
630 returns NIL instead of signalling an obscure error.
631 * bug fix: fix miscompilation of some logand forms with large constant
632 arguments. (lp#974406)
633 * bug fix: account for funcallable-instance objects properly in ROOM.
634 * bug fix: incorrect octets reported for c-string decoding errors.
636 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
638 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
639 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
640 allowing faster release of memory back to the OS. (lp#991293)
641 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
642 existing deadline for the dynamic scope of its body.
643 * bug fix: compiler-internal interval arithmetic needed to be more
644 conservative about open intervals when operated on by monotonic but not
645 strictly-monotonic functions. (lp#975528)
646 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
647 it's also slightly faster. (lp#998926)
648 * bug fix: better error messages for malformed declarations.
650 * bug fix: define-condition didn't return the name of the defined condition.
652 ** improved docstrings: REPLACE (lp#965592)
654 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
655 * bug fix: fix copy-structure. When copying from stack to heap, garbage
656 could end up in the heap making GC unhappy.
657 (Thanks to James Knight, lp#911027)
659 ** SBCL can now be built using Clang.
660 ** ASDF has been updated 2.20.
661 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
662 * bug fix: don't complain about a too-hairy lexical environment for inlining
663 when the function has never been requested for inlining. (lp#963530)
665 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
666 * enhancements to building SBCL using make.sh:
667 ** --fancy can be specified to enable all supported feature enhancements.
668 ** --with-<feature> and --without-<feature> can be used to specify
669 which features to build with.
670 ** --arch option can be used to specify the architecture to build for.
671 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
672 full-blows cross-compilation.)
673 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
674 which allows specifying name of the default interning package for the
676 * enhancement: when *READ-EVAL* is true, arrays with element type other than
677 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
678 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
679 null alien when malloc() fails. (lp#891268)
680 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
681 conditions can be conveniently accessed through function with the same
682 name, analogously to CONTINUE.
683 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
684 from the printer by type, causing an error marker to be printed instead.
685 (Thanks to Attila Lendvai)
686 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
687 generally behave better when errors occur during printing.
688 * enhancement: the test runner now takes a --report-skipped-tests argument
689 to report the individual tests skipped as well as the number of skipped
691 * enhancement: undefined functions now appear in backtraces as ("undefined
692 function") instead of ("bogus stack frame") on x86oids.
693 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
694 deadlock errors are reported in an easier-to-decipher manner.
695 * enhancement: DESCRIBE on type designators reports the expansion in more
697 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
698 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
699 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
700 * enhancement: better disassembly of segment-prefixes on x86 and other
701 instruction prefixes (e.g. LOCK) on x86 and x86-64.
702 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
703 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
704 * optimization: SUBSEQ on vectors of unknown element type is substantially
706 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
707 be stack-allocated. (lp#902351)
708 * optimization: the compiler is smarter about representation selection for
709 floating point constants used in full calls.
710 * optimization: the compiler no longer refuses to coerce large fixnums to
711 single floats inline, except on x86 where this limitation is still
713 * optimization: truncation operations on integers with constant divisor
714 arguments 1 and -1 are optimized away.
715 * bug fix: deadlock detection could report the same deadlock twice, for
716 two different threads. Now a single deadlock is reported exactly once.
717 * bug fix: interval-arithmetic division during type derivation did not
718 account for signed zeros.
719 * bug fix: compiler error when typechecking a call to a function with
720 non-constant keyword arguments.
721 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
722 * bug fix: condition slot accessors no longer cause undefined function
723 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
724 form that defines them. (lp#896379)
725 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
727 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
728 bogusly report NIL, T.
729 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
730 required arguments ignored and performed assignments to others.
732 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
733 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
734 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
735 * bug fix: redefining a function whose previous definition contained an
736 unknown type no longer causes a style-warning. (lp#806243)
737 * bug fix: undefined functions now appear in backtraces as ("undefined
738 function") instead of ("bogus stack frame") on non-x86oids.
739 * bug fix: backtraces are no longer cut off at ("undefined function") when
740 called under certain circumstances (involving a caller-allocated stack
742 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
743 systems. (regression since 1.0.53)
744 * bug fix: GC deadlocks from dladdr() on certain platforms.
745 * bug fix: broken standard streams no longer automatically cause recursive
746 errors on debugger entry.
747 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
748 (regression since 1.0.53)
749 * bug fix: attempts to stack allocate a required argument to a function with
750 an external entry point caused compiler-errors.
751 * bug fix: compiler notes for failed stack allocation for a function argument
752 no longer claim to be unable to stack allocate the function.
753 * bug fix: COERCE now signals a type-error on several coercions to
754 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
755 * bug fix: missing failure-to-stack-allocate compiler notes for some
756 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
757 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
759 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
761 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
762 * minor incompatible changes:
763 ** RENAME-FILE on a symbolic links used to rename the linked-to file
765 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
766 directory, but now signal an error instead. Use TRUENAME to resolve the
767 pathname if you wish to delete the linked directory, and DELETE-FILE if
768 you wish to delete the
769 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
770 symbols associated with it will trigger a compile-time warning.
771 * thread-related enhancements:
772 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
773 Many thanks to generous donors!)
774 ** Threading is now more reliable on non-Linux platforms. We still don't
775 consider threads on non-Linux platforms good enough to enable them by
776 default, but they're in a clearly better shape now.
777 ** Deadlines supported now on all platforms.
778 ** All blocking functions in the threading API now have a :TIMEOUT
780 ** Semaphore notification objects have been added to SB-THREAD.
781 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
782 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
783 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
784 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
785 using an API anologous to defining new SETFable places.
786 * GC-related enhancements and bug fixes:
787 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
788 and Gb suffixes. Default is megabytes as before.
789 ** on GENCGC targets, the default dynamic space size is now 512Mb for
790 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
791 exception, defaulting to mere 444Mb to fit under default ulimits.) The
792 new defaults are in place to prevent hitting swap on low-end systems.
793 Use build-time option --dynamic-space-size to build an SBCL with
794 another default, or the runtime option to adjust the size at startup: a
795 good size is at most equal to the amount of physical memory the system
797 ** on GENCGC targets, nursery and generation sizes now default to 5% of
799 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
800 refuses to create SIMPLE-FUN objects.
801 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
803 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
804 validation of pointer objects as GENCGC does, instead of a
805 comparatively weak bounds-check against the heap spaces.
806 * SB-BSD-SOCKETS bug fixes:
807 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
808 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
809 systems with getaddrinfo().
810 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
811 safe outside systems with getaddrinfo().
812 * enhancement: ASDF has been updated 2.019.
813 * enhancement: special-case TCO prevention for functions which never return
814 extended to untrusted types, keeping one more frame's worth of debug
815 information around in many cases.
816 * enhancement: debug-names of anonymous and local function are more
817 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
818 * enhancement: on win32, ABS of complex floats guards better against
819 overflows. (lp#888410)
820 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
821 process exiting with code 1. (lp#676987)
822 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
823 the system where on the filesystem the SBCL sources themselves are
824 located. (Thanks to Zach Beane)
825 * enhancement: the compiler is now able to derive tighter bounds for
826 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
827 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
828 correctly, even on wide-fixnum builds. (lp#887220)
829 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
830 resolved to directories.
831 * bug fix: type mismatch when assigning to lexical variables no longer
832 result in fasl-dumping internal type objects. (lp#890750)
833 * bug fix: type mismatch on (SETF AREF) and function return values no
834 longer result in fasl-dumping internal type objects.
835 * bug fix: With several combinations of argument types, for example (EXPT
836 <integer> <(complex double)>), EXPT now uses double-precision throughout
837 instead of partially calculating only to single-precision. (lp#741564;
838 thanks to Lutz Euler)
839 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
840 objects when interrupted by GC on PPC.
842 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
843 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
844 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
845 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
846 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
847 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
848 targets is now 63 bits (up from 61).
849 * enhancement: DESCRIBE now reports a lambda-list and source location
850 for complext setf-expanders.
851 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
852 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
853 of multiple-valued places to be set to NIL, instead of signalling an
854 error (per a careful reading of CLHS 5.1.2.3).
855 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
856 * bug fix: repair crash in x86oid darwin signal handling emulation
857 when built with certain compilers.
858 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
859 rotation arguments on x86-64. (lp#882151)
860 * bug fix: low-level control flow optimisations could result in bogus
861 code in functions with tail and non-tail calls to local functions on
863 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
864 to emit literal characters > (code-char 4095), for comparisons with
866 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
867 on 64 bit platforms. (lp#881445)
868 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
869 delete the wrong file when using relative pathnames. (lp#882877)
870 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
871 sequences and :KEY NIL.
873 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
874 * enhancement: ASDF has been updated to version 2.017.
875 * enhancement: the --core command line option now accepts binaries with
877 * enhancement: when built with :sb-core-compression, core files (regular
878 or executable) can be compressed with zlib. Use the :COMPRESSION
879 argument to SAVE-LISP-AND-DIE to specify a compression level.
880 * enhancement: --[no-]merge-core-pages determines whether the runtime
881 hints the operating system that identical core pages between SBCL
882 processes should share the same physical memory. Default is to only
883 enable this for compressed cores.
884 * optimization: SLEEP no longer conses.
885 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
886 or bit-vectors when using the standard pretty-print dispatch table.
887 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
889 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
890 AREF, CHAR, etc. (lp#826971)
891 * bug fix: compiler-errors causes by integer arguments with composed of
892 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
893 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
894 expressions. (lp#770184)
895 * bug fix: complex single float literals are correctly aligned when used
896 as arguments of arithmetic operators.
897 * bug fix: on 32-bit platforms, rounding of double floats larger than a
898 fixnum is correct. (reported by Peter Keller)
899 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
900 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
902 * bug fix: redefining classes such that slots with custom allocation are
903 added or removed works again.
905 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
906 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
907 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
908 MAKE-SOCKET-STREAM if using SERVE-EVENT.
909 * enhancement: added support for socket keepalive timeout intervals
910 and probe counts on Linux.
911 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
912 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
913 * enhancement: added new toplevel options --quit and --non-interactive
915 * enhancement: the Windows port of SBCL now builds and runs on Wine
916 (thanks to Anton Kovalenko).
917 * enhancement: more, and more correct, SSE instruction definitions on
918 x86-64 (thanks to Alexander Gavrilov).
919 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
920 to help the processor execute spin loops, when applicable. Currently
921 implemented for x86 and x86-64.
922 * optimization: unsigned integer divisions by a constant are implemented
923 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
924 * optimization: improved type-derivation for LOAD-TIME-VALUE.
925 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
926 instructions. (lp#814688)
927 * bug fix: COERCE to unfinalized extended sequence classes now works.
928 (reported by Jan Moringen; lp#815155)
929 * bug fix: a compiler error during typecheck generation, reported by Eric
931 * bug fix: obsolete instance protocol fires when shared slots are added
933 * bug fix: fixed-format floating point printing with scaling factors.
935 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
936 backtraces. (lp#818460)
937 * bug fix: better backtraces for interrupted syscall frames on x86.
939 * bug fix: SSE comparison instructions can be disassembled even when one
940 operand is in memory. (lp#814702)
941 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
942 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
943 type information associated with the VALUES form.
944 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
946 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
947 first write (lp#561642).
948 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
949 * bug fix: bound propagation involving conversion of large bignums to
950 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
952 * bug fix: &REST to &MORE conversion still works in unsafe call to known
953 functions; reported by Lutz Euler (lp#826459).
954 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
957 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
958 * enhancement: errors from FD handlers now provide a restart to remove
959 the offending handler.
960 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
962 * enhancement: location of user or system initialization file can now easily
963 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
964 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
965 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
966 the thunk, as a keyword argument, :arguments.
967 * enhancement: constraint propagation is simplified (and sped up) when
968 COMPILATION-SPEED > SPEED.
969 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
970 * enhancement: debugger understands &MORE arguments better.
971 * optimization: extracting bits of a single-float on x86-64 has been
972 optimized. (lp#555201)
973 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
974 when (> SPEED SPACE).
975 * optimization: local call trampolines (x86 and x86-64) are emitted
977 * optimization: implicit value cells for dynamic-extent closed-over bindings
978 on x86 and x86-64 can hold unboxed values as well.
979 * meta-optimization: improved compilation speed, especially for large
980 functions. (lp#792363 and lp#394206)
981 * bug fix: bound derivation for floating point operations is now more
982 careful about rounding possibly closing open bounds. (lp#793771)
983 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
984 backwards incompatible change in 1.0.48.27)
985 * bug fix: occasional debugger errors in when a type-error occured in a
986 function with dynamic-extent &rest list.
987 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
988 boa-construtors can be used to initialized structure slots.
989 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
990 (lp#795705, regression)
991 * bug fix: DIRECTORY works better on logical pathnames.
992 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
993 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
994 * bug fix: the compiler no longer constant-folds NaNs in
995 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
996 * bug fix: FORMAT now handles floating point rounding correct, eg.
997 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
999 * bug fix: style warning during lambda-list introspection of generic
1000 functions with both optional and key argments.
1001 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
1002 folding. (lp#729765)
1003 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
1006 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
1007 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
1008 interrupts for its body.
1009 * enhancement: source locations are now available for files loaded as
1010 source, compile-time-too evaluation, and initialization files.
1011 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
1012 virtual source-file information, eg. overriding input-file of COMPILE-FILE
1013 when a temporary file is used for compilation.
1014 * enhancement: ASDF has been updated to version 2.015.3.
1015 * enhancement: backtraces involving frames from the default evaluator are
1017 * enhancement: RUN-PROGRAM works with user-defined binary input and output
1019 * enhancement: more informative compile-time warnings and runtime errors for
1020 type-errors detected at compile-time.
1021 * enhancement: deadlock detection for mutexes and spinlocks.
1022 * enhancement: dynamic-extent for &rest lists stack allocate only their
1023 spines, not their argumets. While portable code should not rely on this,
1024 particularly in combination with inlining, it should make dynamic-extent
1025 easier to use safely.
1026 * enhancement: SB-POSIX improvements:
1027 ** WNOHANG and WUNTRACED are exported.
1028 ** SYSCALL-ERROR now also provides the name of the failing system call.
1029 * enhancement: --script improvements:
1030 ** errors on standard input, output, and error streams are handled and
1031 cause scripts to exit silently, making them easier to use in shell
1033 ** backtraces from scripts now go to standard error instead of the
1034 terminal even if one is available.
1035 ** --script can be an argument, causing the script to be loaded from
1037 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
1038 strings to foreign memory.
1039 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
1040 a file, making it easier to understand heap dynamics.
1041 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
1042 allows the compiler to automatically elide rest-list allocation so long as
1043 the call sites are in functions that the compiler knows cannot escape.
1045 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
1046 especially in safe code when none of the required arguments have changed
1048 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
1049 uninterruptible, as well as blocking reads from socket streams created
1050 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
1051 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
1052 from the to-char if the from-char is not a dispatch-macro character.
1053 * bug fix: references to undefined variables in function calls that are
1054 optimized away now signal a runtime error. (lp#722734)
1055 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
1056 types from a function defined in the same file. (regression from
1058 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
1060 * bug fix: spurious errors during QUIT when standard streams were closed.
1062 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
1063 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
1064 years, is now no longer supported.
1065 * enhancement: read() and write() have been added to SB-POSIX.
1066 * enhancement: types of DEFSTRUCT constructors are proclaimed more
1067 accurately, allowing better typechecking of call-sites.
1068 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
1069 are no longer caught. (reverted to pre 1.0.34 behaviour)
1070 * optimization: slightly faster ISQRT. (lp#713343)
1071 * bug fix: better support for Solaris /bin/sh in sh-based tests.
1072 * bug fix: TRACE behaves better when attempting to trace undefined
1073 functions. (lp#740717)
1074 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
1075 to (FUNCALL #'(LAMBDA ...) ...).
1076 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
1077 a compile-time error. (lp#720382)
1078 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
1080 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
1081 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
1082 optimization. (regression from 1.0.45.18/1.0.46.15)
1083 * bug fix: package locks did not protects against compile-time side-effects
1084 of DEFUN. (lp#675584)
1085 * bug fix: --dynamic-space-size argument is validated more carefully.
1087 * bug fix: memory fault from printing a malformed simple-condition.
1089 * bug fix: redefining classes so that slot-definition classes change now
1090 engages the obsolete instance protocol. (lp#766271)
1091 * bug fix: constant improper lists could break source coverage recording.
1093 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
1094 could exhaust stack.
1096 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
1097 * bug fix: fix mach port rights leaks in mach exception handling code on
1098 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
1100 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
1101 * enhancement: redefinition warnings for macros from different files. (lp#434657)
1102 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
1103 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
1104 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
1105 processed using EVAL -- now the appropriate toplevel form is reported instead.
1106 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
1107 declarations. (lp#726331)
1108 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
1109 that NIL/NULL is excluded from the type.
1110 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
1112 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
1113 and its compatriots.
1114 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
1115 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
1116 stack-allocated values out of their dynamic-extent. (lp#310175)
1117 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
1118 x86-64 builds caused a type-error.
1119 * bug fix: calling COMPILE with something else than a lambda-expression as the
1120 second argument reports a more sensible error. (lp#718905)
1121 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
1122 are detected. (lp#520607)
1123 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
1125 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
1126 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
1127 methods. (regression from 1.0.45.18)
1128 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
1129 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
1130 * bug fix: several foreign functions accepting string also accepted NIL and
1131 consequently caused a memory fault at 0 now signal a type-error instead.
1133 * bug fix: under rare circumstances, constraint propagation could rewrite a
1134 variable reference to refer to a variable not in scope, causing an error
1135 during physical environment analysis when attempting to close over the
1136 variable. (lp#551227)
1137 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
1139 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
1140 * enhancement: largefile support on Solaris.
1141 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
1142 arguments (lp#710017)
1143 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
1144 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
1146 * optimization: ERROR and CERROR are approximately 5 times faster.
1147 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
1148 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
1149 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
1150 up instance creation in those cases.
1151 * optimization: arithmetic operations with multiple constant arguments in now
1152 have them reduced at compile-time. (lp#676414)
1153 * optimization: determining current character position on string-streams for
1154 pretty-printing was overly slow.
1155 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
1156 lifetime analysis to overwrite closed-over variables (lp#681092).
1157 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
1158 were not handled correctly (lp#713063).
1159 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
1161 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
1162 mistake. (lp#667297).
1163 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
1164 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
1165 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
1166 unintern the wrong symbol with the same name. (lp#693796)
1167 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
1168 making it possible to restore the initial table if it has been messed up.
1171 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
1172 * enhancement: ~/ and ~user/ are treated specially in pathnames.
1173 Refer to documentation for details.
1174 * enhancement: ASDF has been updated to version 2.010.
1175 * optimization: mutated closed-over variables that are only accessed by
1176 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
1177 declared to be DYNAMIC-EXTENT) are stored directly in their containing
1178 stack frame, rather than allocating a VALUE-CELL (lp#586103).
1179 * optimization: UNWIND-PROTECT cleanup functions are now declared
1181 * bug fix: backtracing function with &REST arguments now shows the full
1182 argument list. (lp#310173)
1183 * bug fix: return types for functions with complex lambda-lists are now
1184 derived properly (lp#384892)
1185 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
1186 long string arguments slowed the compiler down to a crawl.
1187 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
1188 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
1189 in the DEFMETHOD body.
1190 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
1191 messages, being instead replaced with the corresponding function name.
1192 * bug fix: don't derive overly complex unions of numeric types for arithmetic
1193 operators. (lp#309448)
1195 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
1196 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
1197 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
1198 * enhancement: ALLOCATION-INFORMATION also provides the page the object
1200 * enhancement: default dynamic-space size can be configured at build-time
1201 without touching source, using the --dynamic-space-size argument to make.sh.
1202 * enhancement: DESCRIBE recognizes symbols naming optimization policy
1203 qualities, and mentions ALWAYS-BOUND declarations.
1204 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
1206 * enhancement: ASDF has been updated to 2.009.
1207 * enhancement: the system detects known type-erros in calls better,
1208 signalling a full warning about violated proclaimed FTYPEs and violations
1209 of derived FTYPEs within the same file, including self-calls.
1210 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
1211 * optimization: constant-folding exploits numeric and character types, in
1212 addition member types.
1213 * optimization: numeric, character and member types that are inhabited by
1214 exactly one value are tested with EQL.
1215 * optimization: more conditional branches are eliminated during IR1.
1216 Branches are simplified before performing if/if-conversion, and simple
1217 equivalent branches (that only read the same constant or variable) are
1219 * improvements to the Windows port:
1220 ** change: canonical unparsing form for pathname namestrings now uses / as
1221 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
1222 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
1223 on Windows. (thanks to Kalyanov Dmitry)
1224 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
1226 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
1227 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
1228 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
1229 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
1231 * bug fix: interrupts arriving during CL:OPEN caused an error.
1232 * bug fix: overeager character buffering could cause input to block
1233 spuriously when reading from a pipe (lp#643686)
1234 * bug fix: more efficient timer expiry should avoid starvation on systems
1235 where number of SIGALRMs per second is restricted. (lp#375515)
1236 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
1237 * bug fix: compile-times no longer scale linearly with the size of
1238 quoted lists in source-code. (lp#654289)
1239 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
1240 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
1241 so badly. (lp#654485)
1242 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
1243 an error for eg. STRUCTURE. (lp#458015)
1244 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
1245 (lp#613871, thanks to Roman Marynchak)
1246 * bug fix: more reliable &REST list type derivation. (lp#655203)
1247 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
1248 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
1249 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
1250 also declared NOTINLINE. (lp#655581)
1251 * bug fix: the compiler could attempt to emit constant left shifts of
1252 greater value than n-word-bits. (lp#309063)
1253 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
1254 type information for the function being set. (lp#659220)
1255 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
1256 containing self-calls were recompiled with a new signature, and failed
1257 to warn when a self-call using the old signature was left in. (lp#655126)
1258 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
1259 :DEFAULT when the default external had character size other than 8 bits.
1261 * bug fix: derived types of functions in the same file were implicitly
1262 trusted, leading to potential heap corruption when those function were
1263 defined incompatibly. (lp#657499)
1264 * bug fix: existing ASDF source registries are ignored when building
1265 contribs (lp#659105)
1266 * bug fix: short-form DEFSETF checks that the second argument is a symbol
1267 (lp#655824, thanks to Roman Marynchak)
1268 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
1269 package-lock violation was detected. (lp#660752)
1270 * bug fix: the system can store different docstrings for a single function
1271 under different names. (lp#661631, regression from 1.0.29.24)
1272 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
1273 properly. (lp#384801)
1274 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
1275 of specified length could confuse the type derivation in unsafe code.
1277 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1278 fork with multiple Lisp threads running is made on every platform,
1279 not just Darwin. (lp#451111)
1280 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1281 around when core was saved, which could cause undefined behaviour when the
1283 * bug fix: Allow UNTRACE of functions that are no longer defined
1284 (lp#667657, thanks to Attila Lendvai)
1285 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1286 compile-time warning (lp#664373, thanks to Stas Boukarev)
1288 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1289 * incompatible change: FD-STREAMS no longer participate in the serve-event
1290 event-loop by default. (lp#316072)
1291 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1292 affects streams from CL:OPEN.
1293 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1294 default, but this is liable to change: applications needing serve-event
1295 for socket streams should explicitly request it using :SERVE-EVENTS T
1297 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1299 * enhancement: CLOS effective method functions and defclass slot typechecking
1300 function now have debug names for use in backtraces and profiles.
1301 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1303 * enhancement: symbols are printed using fully qualified names in several
1304 error and warning messages which are often associated with package
1305 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1306 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1307 thanks to Andrew Golding)
1308 * bug fix: reading /proc files on Linux works. (lp#425199)
1309 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1311 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1312 breaking code that tried to write the value of a printer control variable.
1313 (lp#581564, thanks to Stas Boukarev)
1314 * bug fix: WRITE compiler macro did not handle output stream designators
1315 correctly. (lp#598374, thanks to Stas Boukarev)
1316 * bug fix: better availability of names of foreign functions in backtraces
1317 on Linux. (lp#626962, thanks to Stas Boukarev)
1318 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1319 lp#627581, thanks to Josh Elsasser and Jim Wise)
1320 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1321 thanks to Josh Elsasser)
1322 * bug fix: using aliases for builtin classes as defmethod specializers
1323 without adding DEFTYPEs for them works. (lp#618387)
1324 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1326 * bug fix: legally dynamic-extent lists and vectors used as
1327 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1328 * bug fix: inline-expansion creating references to dead lambda-variables
1329 (lp#454681, thanks to Alexey Dejneka)
1330 * bug fix: better error message for bogus numerical arguments to RANDOM.
1331 (lp#598986, thanks to Stas Boukarev)
1332 * bug fix: the compiler occasionally inlined references from incompatible
1333 environments occurs. (lp#308951)
1334 * bug fix: the compiler threw an error when trying to compile a local
1335 function (labels or flet) known to take a specialized complex argument.
1336 (not in launchpad, reported by sykopomp in #lispgames)
1337 * bug fix: package-locks failed to protect against compile-time effects of
1338 DEFUN when the symbol previously had a macro definition. (lp#576637)
1339 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1340 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1341 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1342 * bug fix: evaluation in debugger REPL works using the global context when
1343 in frames that do not have sufficient debug information.
1344 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1346 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1348 * bug fix: interrupt taking longer than the requested period caused SLEEP
1349 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1351 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1353 ** Cross-compilation host is now specified to make.sh using
1354 command-line argument --xc-host=<command> instead of a positional
1355 argument. (thanks to Daniel Herring)
1356 ** Install location can be specified to make.sh using command-line
1357 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1358 * optimization: The default implementation of
1359 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1360 * enhancement: Explicit memory barrier operations are now available for use
1361 by multithreaded code. See documentation for details.
1362 * enhancement: Experimental support for threading on Linux/PPC.
1363 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1364 * bug fix: EXPT signals an error if first argument is a zero and second
1365 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1366 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1367 (lp#576594, thanks to Roman Marynchak)
1368 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1369 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1371 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1372 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1373 cached, leading to many fewer expensive calls to
1374 COMPUTE-APPLICABLE-METHODS.
1375 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1376 CLASS argument, search for and call an appropriate optimized ctor function
1378 * bug fix: WRITE always returns the correct value.
1380 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1381 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1382 * bug fix: Name conflicts between symbols passed as arguments to a single
1383 call to IMPORT no longer add multiple symbols with the same name to the
1384 package (detectable via DO-SYMBOLS).
1385 * bug fix: support building without the dlshim on darwin x86 and x86-64
1387 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1389 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1390 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1392 * bug fix: linkage-table entries on PPC now no longer overflow their
1393 space allocation (potentially causing crashes if they are written out
1395 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1396 platforms, preventing the GC from seeing stale pointers on the control
1397 stack in subsequent GCs (which would, and does, break invariants).
1398 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1399 * bug fix: Literal characters with code points greater than about 32767
1400 now work on PPC UNICODE builds.
1401 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1402 high order bits are explicitly cleared out. In some contrived situations,
1403 this could lead to wrong results in mixed real/complex float arithmetic.
1404 * bug fix: Fix function/macro redefinition warnings when building with
1405 clisp. (lp#576787, thanks to Josh Elsasser)
1406 * new platform: experimental support for ppc/openbsd (thanks to Josh
1408 * bug fix: Floating-point traps now work on ppc/linux.
1410 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1411 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1412 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1413 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1414 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1415 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1416 SB-THREAD:GRAB-MUTEX.
1417 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1418 contain additional data structures and tools for concurrent programming;
1419 at the moment it contains a lock-free queue, and a lock-free mailbox
1421 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1422 GET-MUTEX but takes &key rather than &optional parameters. Also added
1423 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1425 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1426 SB-THREAD:WAIT-ON-SEMAPHORE.
1427 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1429 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1430 conditions to defer the deadline for forever.
1431 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1433 * enhancement: errors from NO-APPLICABLE-METHOD and
1434 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1435 generic function call.
1436 * enhancement: SB-BSD-SOCKET improvements
1437 ** sockets and socket streams now have a more informative printed
1438 representation based on the corresponding SOCKET-NAME and
1440 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1442 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1443 CL:CLOSE when appropriate, and no longer disassociates the stream
1444 from the socket if close failed. (lp#543951)
1445 * improvements to the instrumenting profiler
1446 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1447 ** optimization: counters no longer use locks for the overflow mode.
1448 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1449 incurred an off-by-one miscount.
1450 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1451 * enhancement: improved DEFMETHOD pretty-printing.
1452 * enhancement: perform range reduction when arguments are too large for
1453 x87's transcendentals (instead of returning 0). (lp#327192)
1454 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1455 some of CL-PPCRE's macros. (lp#570079)
1456 * enhancement: our machine code is slightly less hostile to valgrind on
1458 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1459 to Robert Swindells and Aleksej Saushev)
1460 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1461 * bug fix: a rare case of startup-time page table corruption.
1462 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1463 to timeouts could be left in an inconsistent state.
1464 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1465 * bug fix: misoptimization of multiplication by one in
1466 (SB-C::FLOAT-ACCURACY 0) policies.
1467 * bug fix: miscounts in SB-PROFILE.
1468 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1469 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1470 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1471 up itself" (March 2010) for further details.
1472 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1473 against length of the list if the element is found before the specified
1474 END is reached. (thanks to Alec Berryman, lp#554385)
1475 * bug fix: errors signalled during package graph modification no longer
1476 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1477 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1478 :SB-DOC feature. (lp#552564)
1479 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1480 * bug fix: more robust runtime executable path detection. (lp#375549)
1481 * bug fix: GCD always returns positive values. (lp#413680)
1482 * bug fix: Converting division to multiplication by reciprocal handles
1484 * bug fix: We were too eager in eliding range reduction tests on x87.
1485 The maximal magnitude is 2^63, not 2^64.
1486 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1488 * bug fix: Maybe restore buildability on Alpha.
1489 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1491 * bug fix: RANDOM-STATE can be printed readably again.
1492 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1493 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1494 types) could result in type mismatches during compilation.
1496 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1497 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1498 stack frame thrown from.
1499 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1500 compiler optimization qualities inside dynamic extent of its body.
1501 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1502 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1504 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1505 constraint propgation, allowing better compilation eg. when used to
1506 access structures with WITH-SLOTS. (lp#520366)
1507 * optimization: the compiler is now more aware of the type of the underlying
1508 storage vector for multidimensional simple arrays resulting in better code
1509 for accessing such arrays.
1510 * optimization: passing NIL as the environment argument to TYPEP no longer
1511 inhibits optimizing it. (lp#309788)
1512 * optimization: more efficient register usage when handling single-float
1513 arguments on x86-64. (thanks to Lutz Euler)
1514 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1515 pre-allocated temporary vectors. (lp#496249)
1516 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1517 in :INITIAL-CONTENTS. (lp#523612)
1518 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1519 functions. (lp#524707)
1520 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1521 WITH-SLOTS usages during compilation.
1522 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1523 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1524 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1525 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1526 instruction (tested on x86oid linux with ud2-breakpoints).
1527 * bug fix: slam.sh now works on win32.
1528 * bug fix: better differences of numeric types. (lp#309124)
1529 * bug fix: arrays declared intersection and union types can have their
1530 upgraded element type derived. (lp#316078)
1531 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
1532 threads started during profiling. (lp#472499)
1533 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
1535 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
1536 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
1537 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
1538 values instead of signaling an error. (lp#309093)
1539 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
1541 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
1542 declarations (lp#497321)
1543 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1544 and failed to detect circular lists (lp#452008)
1545 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1547 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1548 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1549 due to it, so that handlers can run.
1550 * bug fix: reparsing undefined types if they have become defined since
1551 parsing. (lp#309128)
1552 * bug fix: missing &REST type in a proclamation for a function with both
1553 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1554 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1555 expanded calls (lp#542174)
1556 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1557 than just at toplevel form.
1559 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1560 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1561 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1562 but work on type specifiers.
1563 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1564 to name a type specifier.
1565 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1566 specifier is valid where "valid" basically means "would be accepted as
1567 second argument of TYPEP".
1568 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1569 returns the function's declared, or derived FTYPE.
1570 * new feature: SB-POSIX now supports accessing the d_ino member of
1571 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1572 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1573 provide for seeding a RANDOM-STATE object with user-provided data or
1574 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1575 attempt to initialize the returned state from the operating system's
1576 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1577 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1578 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1579 * bug fix: Fix grammar and style issues for the docstrings of
1580 printer-related variables and functions. (Thanks to mon_key; launchpad
1582 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1584 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1585 in a row even though a handler defered the deadline long into the
1587 * bug fix: A deadline handler was run without interrupts enabled for a
1588 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1589 in infinitely spinning, non-killable threads.
1590 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1591 before reaching the erring stack frame.
1592 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1593 real power. (launchpad bug lp#525949)
1594 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1595 GENCGC platforms. (launchpad bug lp#529014)
1596 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1597 (launchpad bug lp#525916)
1598 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1599 (Thanks to Robert Goldman)
1601 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1602 * optimization: ROUND with a single single-float or double-float argument
1603 is properly inlined when possible.
1604 * optimization: Slightly better code is generated for integer<->float
1605 conversions and for single-float<->double-float conversions on x86-64.
1606 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1607 code for 32-bit and 64-bit rotations on x86-64.
1608 * bug fix: The install script changes the ownership of directories as well
1609 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1610 launchpad bug lp#508485)
1611 * bug fix: TRUNCATE with a single single-float or double-float argument is
1612 properly inlined when possible. (launchpad bug lp#489388)
1613 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1614 no longer causes a compiler error on x86 and ppc.
1615 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1616 always relative to *READTABLE* rather than the passed argument.
1618 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1619 * minor incompatible change: threading support is now enabled by default
1621 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1623 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1624 are now caught and reported just like errors during macroexpansion.
1625 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1626 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1627 * enhancement: ASDF systems can now depends on SB-QUEUE.
1628 * fixes and improvements related to Unicode and external formats:
1629 ** bug fix: error handling and restart usage in the ucs-2 external format
1631 ** there is now an implementation of the ucs-4 external format.
1632 ** the utf-16 and utf-32 external formats are supported.
1633 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1634 in the environment. setenv() and unsetenv() are also provided. (reported by
1635 Fare Rideau; launchpad bug lp#460455)
1636 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1637 loading. This ensures sensible errors for .FASL files from other
1638 implementations on case-insensitive filesystems. (reported by Willem
1639 Broekema; launchpad bug lp#489417)
1640 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1641 Willem Broekema; launchpad bug lp#489698).
1642 * bug fix: some minor code rearrangements to reenable warning-free building
1643 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1644 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1646 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1649 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1650 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1651 * improvement: support O_LARGEFILE access to files larger than 2GB on
1652 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1653 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1654 definitions for methods specializing on the passed class itself.
1655 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1656 definitions for methods specializing on the passed class itself, or on
1658 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1659 about itself during the build (e.g. for M-? in Slime), if this flag is
1660 enabled in customize-target-features.lisp. This will increase the core
1661 size by about 5-6mb, though, so it's mostly interesting to SBCL
1663 * new feature: various GENCGC tuning parameters have been experimentally
1664 documented and exported from SB-EXT. See documentation for details.
1665 * fixes and improvements related to Unicode and external formats:
1666 ** the Unicode character database has been upgraded to the
1667 Unicode 5.2 standard, giving names and properties to a number of new
1668 characters, and providing a few extra characters with case
1670 ** improvement: restarts for providing replacement input/output on coding
1671 errors for fd-stream external formats.
1672 ** improvement: where :<encoding> is a keyword corresponding to an
1673 external format the system supports, it is now possible to specify
1674 (:<encoding> :replacement <character>) as an external format which will
1675 automatically substitute <character> on encoding or decoding errors for
1676 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1678 ** improvement: the file streams underlying the standard streams (such as
1679 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1680 which uses the replacement mechanism to handle encoding errors,
1681 preventing various infinite error chains and unrecoverable I/O
1683 ** minor incompatible change: the utf-8 external format now correctly
1684 refuses to encode Lisp characters in the surrogate range (char-codes
1685 between #xd800 and #xdfff).
1686 ** fix a typo preventing conversion of strings into octet vectors
1687 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1689 ** fix a bug in the octet multibyte handling of decoding errors and the
1690 USE-VALUE restart. (launchpad bug lp#314939)
1691 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1692 restart on fd-stream decoding errors.
1693 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1694 error is near the end of file.
1695 ** fix a double-error case in unibyte octet conversions, when the first
1696 use of USE-VALUE is ignored.
1697 ** fix bugs in handling of undefined code points in unibyte encodings.
1698 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1699 streams after an UNREAD-CHAR.
1700 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1701 object is allocated in a boxed region of dynamic space.
1702 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1703 fork with multiple Lisp threads running is made, instead of going
1704 ahead with unpredictable consequences. (reported by Leslie Polzer)
1705 * bug fix: uses of slot accessors on specialized method parameters within
1706 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1707 error while finalizing the class. This fix may cause classes with slot
1708 accessors to be finalized later than previously. (reported by Lars Rune
1709 Nøstdal; launchpad bug lp#473699)
1710 * bug fix: restore buildability on the MIPS platform. (regression from
1711 1.0.30.38, reported by Samium Gromoff)
1712 * bug fix: inspecting closures is less likely to fail with a type error.
1713 * bug fix: no timer starvation when setting the system clock back.
1714 (launchpad bug lp#460283)
1715 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1716 standard pprint dispatch table as specified by CLHS.
1717 * bug fix: give CLISP a hint about a type declaration to enable it to build
1718 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1720 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1721 (reported by Attila Lendvai; launchpad bug lp#310132)
1722 * bug fix: distinguish in type specifiers between arrays that might be
1723 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1724 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1725 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1726 * bug fix: setting the value of a symbol-macro within a method in the
1727 presence of type declarations works properly again. (reported by Iban
1728 Hatchondo; launchpad bug lp#485019)
1730 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1731 * optimization: faster FIND and POSITION on strings of unknown element type
1732 in high SPEED policies. (thanks to Karol Swietlicki)
1733 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1735 * improvement: better error signalling for bogus parameter specializer names
1736 in DEFMETHOD forms (reported by Pluijzer)
1737 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1739 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1741 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1742 removes previous default initargs (reported by Lars Rune Nøstdal and
1744 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1745 lambda-lists. (reported by Peter Seibel)
1746 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1747 correctly when starting from an executable core without saved runtime
1748 options (reported by Faré Rideau, thanks to Zach Beane)
1749 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1750 an optimization note instead. (reported by Martin Cracauer)
1751 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1752 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1753 new process group if it doesn't need to share stdin with the sbcl
1754 process. (thanks to Leslie Polzer)
1755 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1756 (reported by Stanislaw Halik)
1758 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1759 * improvement: stack allocation is should now be possible in all nested
1760 inlining cases: failure to stack allocate when equivalent code is manually
1761 open coded is now considered a bug.
1762 * improvements related to Unicode:
1763 ** the Unicode character database has been upgraded to the
1764 Unicode 5.1 standard, giving names and properties to a number of new
1765 characters, and providing a few extra characters with case
1767 ** the system now recognizes and produces names for Unicode Hangul
1768 syllable characters.
1769 ** the EBCDIC-US external-format is now supported for octet operations
1770 (as well as for stream operations).
1771 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1772 be used to output toplevel compile-time effects into a separate .CFASL
1774 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1775 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1777 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1779 * optimization: division of floating point numbers by constants uses
1780 multiplication by reciprocal when an exact reciprocal exists.
1781 * optimization: multiplication of single- and double-floats floats by
1782 constant two has been optimized.
1783 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1784 sufficient type information is available. (thanks to Leslie Polzer)
1785 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1786 known structure objects are as efficient as defstruct generated accessors.
1787 * optimization: unused vector creation can now be optimized away.
1788 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1789 * improvement: a STYLE-WARNING is signalled when a generic function
1790 clobbers an earlier FTYPE proclamation.
1791 * improvement: the compiler is able to track the effective type of
1792 generic function across method addition and removal even in the
1793 absence of an explicit DEFGENERIC.
1794 * improvement: DESCRIBE now reports on symbols naming undefined
1795 but assumed or declared function as well.
1796 * improvement: recompilation of systems using SB-GROVEL now works
1797 (thanks to Leslie Polzer)
1798 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1799 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1801 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1802 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1803 well as user defined declaration names.
1804 ** VARIABLE-INFORMATION is now aware of alien variables.
1805 * improvement: improved address space layout on OpenBSD (thanks to Josh
1807 * improvement: pretty-printing of various Lisp forms has been improved
1808 (thanks to Tobias Rittweiler)
1809 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1810 unused were deleted in safe code. (reported by John Fremlin)
1811 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1813 * bug fix: some out-of-line array predicates were missing (reported by
1815 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1817 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1818 (thanks to Larry D'Anna)
1819 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1820 as well. (reported by Josh Elsasser)
1821 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1822 leading to possible attempts to delete the same file twice. See docstring
1823 on DELETE-FILE for details. (reported by John Fremlin)
1824 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1825 designator argument, rather than its truename. (reported by Luis
1827 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1828 information about some array types. (thanks to Luis Oliveira)
1829 * bug fix: moderately complex combinations of inline expansions could
1830 be miscompiled if the result was declared to be dynamic extent.
1831 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1832 form (+ <variable> <integer>) were miscompiled under certain
1834 * bug fix: in some cases no compiler note about failure to stack allocate
1835 was emitted, even if the objects were in fact heap allocated.
1836 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1837 allocation could cause objects users might reasonably expect to
1838 be heap allocated to be stack allocated.
1839 * bug fix: DESCRIBE signalled an error for generic functions under
1840 certain circumstances. (thanks to Leslie Polzer)
1841 * bug fix: Fixed spelling of an error message.
1843 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1844 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1845 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1846 of SB-THREAD:THREAD-ERROR-THREAD.
1847 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1848 * new feature: docstrings for local and anonymous functions are no longer
1849 discarded. (thanks to Leslie Polzer)
1850 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1851 values in other threads.
1852 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1853 about object allocation.
1854 * optimization: division of a real float by a complex float is implemented
1855 with a specialised code sequence.
1856 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1857 keywords is an order of magnitude faster.
1858 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1859 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1860 methods, and similarly for non-standard metaclass classes as long as there
1861 are no methods additional on MAKE-INSTANCE.
1862 * optimization: more efficient type-checks for FIXNUMs when the value
1863 is known to be a signed word on x86 and x86-64.
1864 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1865 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1867 * optimization: compiler is smarter about delegating argument type checks to
1869 * optimization: several character functions are now compiled somewhat more
1870 efficiently. (reported by Lynn Quam)
1871 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1872 * improvement: less unsafe constant folding in floating point arithmetic,
1873 especially for mixed complex/real -float operations.
1874 * optimization: constant double and single floats are stored in native
1875 unboxed format on x86[-64].
1876 * optimization: smarter code for arithmetic operations with constant floats,
1877 complex floats, or integers on x86[-64].
1878 * optimization: smarter code for conjugate/multiplication of float complexes
1879 and abs/negate of floats on x86-64.
1880 * optimization: more efficient complex float and real float operations on
1882 * improvement: complex float division is slightly more stable.
1883 * improvement: DESCRIBE output has been reworked to be easier to read and
1884 contains more pertinent information.
1885 * improvement: failure to provide requested stack allocation compiler notes
1886 provided in all cases (requested stack allocation not happening without a
1887 note being issued is now considered a bug.)
1888 * bug fix: SB-POSIX exports the documented types and functions
1889 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1890 types. (reported by "abhi")
1891 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1892 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1893 (thanks to Paul Khuong)
1894 * bug fix: looping around HANDLER-CASE could silently consume stack space
1895 on each iteration. (reported by "foobar")
1896 * bug fix: better error signalling when calls to functions seeking elements
1897 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1898 (reported by Tobias Rittweiler)
1899 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1900 directory components now works as it used to. (various prolems reported by
1901 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1902 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1903 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1904 * bug fix: bogus undefined variable warnings from fopcompiled references to
1905 global variables. (thanks to Lars Rune Nøstdal)
1906 * bug fix: foreign function names should now appear in backtraces on
1907 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1908 * bug fix: SETF compiler macro documentation strings are not discarded
1910 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1911 (thanks to Alex Plotnick)
1912 * bug fix: SLEEP accepts large integer arguments, truncating them to
1913 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1914 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1915 * bug fix: compiler notes for expensive slot type checks could be emitted
1916 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1918 changes in sbcl-1.0.29 relative to 1.0.28:
1919 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1920 https://bugs.launchpad.net/sbcl
1921 Bugs can be reported directly there, or by sending email to
1922 sbcl-bugs@lists.sourceforge.net
1923 (no subscription required.)
1924 * minor incompatible change: under weak type checking policy integer
1925 types are weakened less aggressively.
1926 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1927 allowed to return, which causes SBCL to quit with exit status 0. Previously
1928 if the function returned with a small integer return value, that value
1929 was accidentally reused as the exit status.
1930 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1931 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1932 :HASH-FUNCTION argument. Refer to user manual for details.
1933 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1935 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1936 microseconds since the Unix epoch on all platforms.
1937 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1938 allows the compiler to safely elide boundedness checks for special
1940 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1941 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1942 efficiency measure for threaded platforms, but also valueable in
1944 * new feature: UNC pathnames are now understood by the system on Windows.
1945 * optimization: the compiler uses a specialized version of FILL when the
1946 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1948 * optimization: accesses to potentially non-simple arrays where element type
1949 is known are 50% faster.
1950 * optimization: compiler now generates faster array typechecking code.
1951 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1953 * optimization: multidimensional array accesses in the absence of type
1954 information regarding array rank are approximately 10% faster due to
1955 open coding of ARRAY-RANK.
1956 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1957 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1959 * optimization: result of call to VECTOR can now be stack allocated.
1960 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1961 as long as the resulting array is one-dimensional and has a known
1962 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1963 length of the list matches the known length of the vector does not
1964 allocate the list as an intermediate step. Ditto for VECTOR and simple
1966 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1967 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1968 known element type, and is known to be simple and one dimensional.
1969 * improvement: SBCL now emits a compiler note where stack allocation was
1970 requested but could not be provided (not in all cases, unfortunately)
1971 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1972 * improvement: pretty-printing loop has been implemented properly. (thanks
1973 to Tobias Rittweiler)
1974 * documentation: CLOS slot typechecing policy has been documented.
1975 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1976 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1977 pointer, leading to memory faults. (thanks to Bart Botta)
1978 * bug fix: better floating point exception handling on x86/OpenBSD.
1979 (thanks to Josh Elsasser)
1980 * bug fix: exit status from QUIT when called under --script was lost
1981 (reported by Hubert Kauker)
1982 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1983 same implementation of FILL to initialize the array, even if a more
1984 efficient one was available (reported by Stas Boukarev, thanks to
1986 * bug fix: potential miscompilation of array stack allocation on x86 and
1987 x86-64. (reported by Time Tossavainen)
1988 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1989 result in their subforms being treated as top level forms. (reported by
1991 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1992 than a machine register could leave garbage in the high bits of the
1993 result register (bug 316325).
1994 * bug fix: disable address space randomization Linux/x86-64 as well,
1995 not just x86-64. (reported by Ken Olum)
1996 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1997 generate incorrect code.
1998 * bug fix: #201; type inference for CONS and ARRAY types could derive
1999 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
2000 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
2001 could not be assigned to or bound with PROGV. (reported by Lorenz
2003 * bug fix: the value of CL:- in the inspector was the previous expression
2004 evaluated rather than the expression being evaluated.
2005 * bug fix: constants can no longer be locally declared special.
2006 * bug fix: signals delivered to threads started from foreign land (read:
2007 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
2008 thread by blocking all signals and resignalling.
2009 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
2010 from :INITFORM, if any.
2012 changes in sbcl-1.0.28 relative to 1.0.27:
2013 * a number of bugs in cross-compilation have been fixed, with the ultimate
2014 result that building under (at least) clisp should be much more reliable.
2015 * minor incompatible changes: echo-streams now propagate unread-char to the
2016 underlying input stream, and no longer permit unreading more than one
2018 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
2019 frames, allowing for instance more reliable backtraces.
2020 * improvement: the debugger REPL can now reference lexical variables
2021 by name directly for code compiled with (DEBUG 3).
2022 * improvement: errors from malformed declarations now have better source
2023 paths associated with them. (thanks to Tobias Rittweiler)
2024 * optimization: faster local calls on x86/x86-64
2025 * bug fix: some error messages for out-of-bound array indexes confused the
2026 index and the bound. (thanks to Stas Boukarev)
2027 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
2029 * bug fix: running regressions tests in shells without OSTYPE set now works.
2030 (reported by Harald Hanche-Olsen)
2031 * bug fix: more robust static space exhaustion signalling from
2032 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
2033 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
2034 docstring away instead of storing it under names such as (LAMBDA (X)).
2035 (reported by Leslie Polzer)
2036 * bug fix: timers could go off in the wrong order, be delayed indefinitely
2037 (thanks to Ole Arndt for the patch)
2038 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
2039 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
2040 potentially-invalid effective methods in its cache.
2041 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
2042 instances as well (thanks to Paul Khuong)
2043 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
2044 SB-POSIX:WAITPID and their C equivalents.
2045 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
2047 changes in sbcl-1.0.27 relative to 1.0.26:
2048 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
2049 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
2050 * improvement: the system either recovers from stack exhaustion or dies
2051 properly as opposed to leaving the user uncertain of whether the handler
2052 trampled on some random memory next to the stack or having to rely on
2053 --lose-on-corruption (which is still a good idea to use in production
2054 because stack exhaustion can happen in signal handlers which will likely
2056 * bug fix: fix gc related interrupt handling bug on ppc (regression from
2057 1.0.25.37, reported by Harald Hanche-Olsen)
2058 * bug fix: work around signal delivery bug in darwin (regression from
2059 1.0.25.44, reported by Sidney Markowitz)
2060 * bug fix: fix ERROR leaking memory (reported by David Thompson)
2062 changes in sbcl-1.0.26 relative to 1.0.25:
2063 * incompatible change: an interruption (be it a function passed to
2064 INTERRUPT-THREAD or a timer function) runs in an environment where
2065 interrupts can be enabled. The interruption can use
2066 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
2067 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
2068 potentially running out of stack. Keep in mind that in the absence
2069 of WITHOUT-INTERRUPTS some potentially blocking operation such as
2070 acquiring a lock can enable interrupts.
2071 * incompatible change: GC-OFF and GC-ON are removed, as they were
2072 always unsafe. Use WITHOUT-GCING instead.
2073 * new feature: runtime option --disable-ldb
2074 * new feature: runtime option --lose-on-corruption to die at the
2075 slightest hint of possibly non-recoverable errors: running out of
2076 memory, stack, alien stack, binding stack, encountering a memory
2077 fault, etc. In the absence of --lose-on-corruption a warning is
2079 * enhancement: detect binding stack exhaustion
2080 * enhancement: detect alien stack exhaustion on x86/x86-64
2081 * improvement: generally more stable and reliable interrupt handling
2082 * improvement: there is a per thread interruption queue,
2083 interruptions are executed in order of arrival
2084 * improvement: a repeating timer reschedules itself when the it has
2085 finished, but expiration times are spaced equally. If an
2086 expiration time is in the past it will trigger after a short grace
2087 period that may give a chance to other things to run.
2088 * optimization: slightly faster gc on multithreaded builds
2089 * optimization: faster WITHOUT-GCING
2090 * bug fix: when JOIN-THREAD signals an error, do it when not holding
2091 important locks so that the debugger/handler doesn't produce
2092 recursive errors or deadlock.
2093 * bug fix: real-time signals are not used anymore, so no more
2094 hanging when the system wide real-time signal queue gets full.
2095 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
2097 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
2098 * bug fix: fix random memory faults related to interrupts on alpha
2099 * bug fix: fix random memory faults related to interrupts on sparc
2100 * bug fix: fix deadlocks related to starting threads
2101 * bug fix: fix deadlines on locks on futex platforms
2102 * bug fix: restore errno in signal handlers
2103 * bug fix: fix deadlocks related to hash tables
2104 * bug fix: fix deadlocks in pcl
2106 changes in sbcl-1.0.25 relative to 1.0.24:
2107 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
2108 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
2109 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
2110 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
2111 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
2112 better name and does not return values so stale on multiprocessor systems.
2113 Also, HOLDING-MUTEX-P was added for about the only sane usage of
2115 * improvement: unithread builds keep track of MUTEX-VALUE.
2116 * improvement: reading from a TWO-WAY-STREAM does not touch the output
2117 stream anymore making it thread safe to have a concurrent reader and
2118 a writer, for instance, in a pipe.
2119 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
2120 arguments, making compiler-macros for SETF-functions able to inspect
2121 their constant arguments.
2122 * improvement: COMPILE-FILE reports times with millisecond accuracy
2123 (thanks to Luis Oliveira)
2124 * optimization: CHAR-CODE type derivation has been improved, making
2125 TYPEP elimination on subtypes of CHARACTER work better. (reported
2126 by Tobias Rittweiler, patch by Paul Khuong)
2127 * bug fix: setting alien structure fields of type struct by value now
2128 computes the right offset for the memory copy.
2129 * bug fix: compilation problem involving inlined calls to aliens with
2130 result type VOID. (reported by Ken Olum)
2131 * bug fix: #235a; sequential inline expasion in different policies no
2132 longer reuses the functional from the previous expansion site.
2133 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
2134 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
2135 * bug fix: named ENUMs in multiply-referenced alien record types no longer
2136 cause an implied type redefinition. Regression from 1.0.21.29.
2137 * bug fix: sign-extension of small signed return values now works with C
2138 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
2139 * improvements to the Windows port:
2140 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
2141 Westfold, thanks to Rudi Schlatte)
2143 changes in sbcl-1.0.24 relative to 1.0.23:
2144 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
2145 vector of a multidimensional SIMPLE-ARRAY.
2146 * new feature: the system now signals a continuable error if standard
2147 readtable modification is attempted. (thanks to Tobias Rittweiler)
2148 * new feature: DIRECTORY has been extended with a non-standard keyword
2149 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
2150 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
2151 has been robustified and documented better. (thanks to Robert Goldman)
2152 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
2153 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
2154 * tradeoff: constant FORMAT control strings are now compiled unless
2155 SPACE > SPEED (previously only when SPEED > SPACE.)
2156 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
2158 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
2160 * bug fix: lexical type declarations are now correctly reported by
2161 SB-CLTL2. (reported by Larry D'Anna)
2162 * bug fix: STRING-TO-OCTETS did not handle :START properly when
2163 using UTF-8 as external format. (thanks to Luis Oliveira)
2164 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
2165 are signalled correctly. (thanks to Stas Boukarev)
2166 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
2167 designator. (thanks to Tobias Rittweiler)
2168 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
2169 designator, and returns T instead of the function. (thanks to
2171 * bug fix: direct superclasses of STANDARD-CLASS and
2172 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
2173 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
2174 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
2175 when no class with the named slot yet exists no longer causes a
2176 compile-time style-warning.
2177 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
2178 in safe code. (reported by Didier Verna)
2179 * bug fix: #430; nested structure constructors can stack allocate.
2180 * bug fix: on some 64-bit platforms dynamic space size was truncated
2181 to #xffff0000 bytes. (reported by Benjamin Lambert)
2182 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
2183 REPL unusable. (reported by Daniel Herring)
2184 * bug fix: return values of READ-SEQUENCE did not take :START into
2185 account on file streams, regressions since 1.0.12.22. (reported by
2186 Thomas Russ, patch by Paul Khuong)
2187 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
2188 method specializer used to confuse permuation vector optimization.
2189 * bug fix: system inserted bogus implicit type declarations for local
2190 special variables in DEFMETHOD bodies.
2191 * bug fix: #354; duplicated frames in backtraces due to
2192 non-tail-call-optimized XEPs to functions with return type NIL
2194 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
2195 initializes structure object slots according to DEFSTRUCT initforms,
2196 and DEFSTRUCT forms :INCLUDEind structure classes defined using
2197 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
2198 (reported by Bruno Haible and Stephen Wilson)
2199 * bug fix: #395; fill-pointer output streams used now support
2200 element-type BASE-CHAR as well.
2201 * bug fix: compiler error when attempting to derive return value of
2202 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
2204 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
2206 * bug fix: Mac OS X binaries should now be portable between Leopard
2209 changes in sbcl-1.0.23 relative to 1.0.22:
2210 * enhancement: when disassembling method functions, disassembly
2211 for the associated fast function is also produced.
2212 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
2214 * optimization: printing with *PRINT-PRETTY* true is now more
2215 efficient as long as the object being printed doesn't require
2216 special handling by the pretty printer.
2217 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
2218 now interact correctly with type declarations.
2219 * partial bug fix: PCL detects infinite recursion during wrapper
2220 validation. (thanks to Attila Lendvai)
2221 * bug fix: #426; nested function calls are inlined properly.
2222 Previously if FOO was an inline function, in calls of the form
2223 (FOO (FOO ...)) the outer call was not inlined.
2224 * bug fix: long long arguments passed in registers to alien
2225 functions on PowerPC Linux and NetBSD are now handled correctly
2226 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
2228 changes in sbcl-1.0.22 relative to 1.0.21:
2229 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
2230 for the shared object in the current directory, but passes the native
2231 namestring of the designated pathname to the operation system's shared
2232 object loading function as-it.
2233 * minor incompatible change: --disable-debugger toplevel option now takes
2234 effect before processing of initialization files and --eval or --load
2236 * new feature: new commandline argument: --script, which supports
2237 shebang lines. See documentation for details. (based on work by
2239 * new feature: SAVE-LISP-AND-DIE can save current values of
2240 --dynamic-space-size and --control-stack-size in the executable core,
2241 causing it to skip normal runtime option processing. See documentation
2242 for details. (thanks to Zach Beane)
2243 * enhancement: inoccous calls to EVAL or generic functions dispatching
2244 on subclasses of eg. STREAM no longer cause compiler notes to appear.
2245 * enhancement: the system no longer resignals errors from --load and
2246 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
2247 associated with the original error to be lost. (thanks to Ariel
2249 * enhancement: :DONT-SAVE keyword argument has been added to
2250 LOAD-SHARED-OBJECT for controlling interaction with
2251 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
2252 the effects of an earlier LOAD-SHARED-OBJECT call.
2253 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
2254 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
2255 provided. (reported by Cedric St-Jean)
2256 * bug fix: circularity handling in the reader did not treat raw
2257 structure slots correctly. (reported by Cedric St-Jean)
2258 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
2259 file descriptors when there were none.
2260 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
2261 was broken. (reporteed by Willem Broekema)
2262 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
2263 pathnames without a directory.
2264 * bug fix: COMPILE-FILE did not warn about undefined variable
2265 references at toplevel, and LOAD of the resulting fasl did
2266 not signal an error.
2267 * bug fix: functions with non-required arguments used to end up with
2268 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
2269 * bug fix: redefining a function with non-required arguments didn't
2270 update the system's knowledge about its call signature properly.
2271 * bug fix: fixed #431; incompatible alien record type redefinitions
2272 are detected and handled. (reported by Neil Haven)
2273 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
2274 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
2276 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2277 after alien stack frames.
2278 * bug fix: strings passed to mk{s,d}temp lacked null termination
2280 changes in sbcl-1.0.21 relative to 1.0.20:
2281 * new feature: the compiler is able to track the effective type of a
2282 generic function across method addition and removal.
2283 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2284 appropriately typed structure slots without locking.
2285 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2286 information like those gathered by TIME using a programming-friendly
2288 * new feature: TIME reports time taken even if the form performs a
2289 non-local transfer of control.
2290 * enhancement: reduced conservativism on GENCGC platforms: on
2291 average 45% less pages pinned (measured from SBCL self build).
2292 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2293 mutate constant symbols or violate declaimed type of the symbol.
2294 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2295 sleeping on the semaphore in heavily contested semaphores.
2296 * bug fix: semaphores and condition variables were not interrupt
2298 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2299 owned by other threads anymore.
2300 * bug fix: FIND on lists called KEY outside the specified
2301 subsequence. (reported by budden)
2302 * bug fix: LOG doesn't use single-float intermediate results when
2303 given mixed integer and double-float arguments, leading to better
2304 precision. (reported by Bob Felts)
2305 * bug fix: LOG with base zero returned values of inconsistent type.
2307 changes in sbcl-1.0.20 relative to 1.0.19:
2308 * minor incompatible change: OPTIMIZE qualities
2309 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2310 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2311 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2312 * documentation: some slot access efficiency guidelines have been
2313 added to the user manual.
2314 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2315 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2316 as ASSOC and MEMEBER.
2317 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2318 to more efficient EQ-comparison versions more often.
2319 * optimization: enhanced derivation of DOLIST iteration variable type
2321 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2323 * optimization: runtime lookup of function definitions can be
2324 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2325 * optimization: compiler is able to derive the return type of
2326 (AREF (THE STRING X) Y) as being CHARACTER.
2327 * optimization: CLRHASH on empty hash-tables no longer does pointless
2328 work. (thanks to Alec Berryman)
2329 * optimization: REPLACE deftransforms don't punt when :START1 or
2331 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2332 no longer emits a code deletion note. (reported by Andrew
2334 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2335 functions with an odd number of &OPTIONAL arguments, a &REST
2336 argument, and one or more &KEY arguments at the call site.
2337 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2338 arguments appeared at call sites as well.
2339 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2340 READ-LINE &co can no longer read from them afterwards. (reported
2342 * bug fix: fixed #427: unused local aliens no longer cause compiler
2343 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2345 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2346 alien-stack leakage. (reported by Andy Hefner)
2347 * bug fix: PROGV signals an error when an attempt to violate declared
2348 type of a variable or bind a constant is made.
2349 * bug fix: SET signals an error when an attempt to violate declared
2350 type of a variable is made.
2351 * bug fix: restart computation during the execution of a restart
2352 test function no longer causes infinite recursion. (reported by
2354 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2355 signals an error. (thanks to Pierre Mai)
2356 * bug fix: EXPORT left symbol unexported in conflict situations.
2357 (thanks to Michael Weber)
2358 * bug fix: correctly handle name conflicts involving CL:NIL.
2359 (thanks to Michael Weber)
2360 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2361 conflicts arising from USEing package with conflicting symbols
2362 correctly. (thanks to Michael Weber)
2364 changes in sbcl-1.0.19 relative to 1.0.18:
2365 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2366 warnings that go otherwise unhandled will be muffled if they are
2367 of the type that's the value of this variable.
2368 * optimization: stack allocation is slightly more efficient on x86
2370 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2371 where a raw slot always is initialized using the initform whose
2372 type is not know sufficiently well a compile-time are now compiled
2373 correctly. (reported by John Morrison)
2374 * bug fix: compiler no longer makes erronous assumptions in the
2375 presence of non-foldable SATISFIES types.
2376 * bug fix: stack analysis missed cleanups of dynamic-extent
2377 arguments in non-let-converted calls to local functions.
2378 * improvements to the Windows port:
2379 ** adjusted address spaces for building on both Win32 and
2380 Win64. (thanks for John Connors)
2381 * fixed some bugs revealed by Paul Dietz' test suite:
2382 ** interval arithmetic during type derivation used inexact integer
2383 to single-float coercions.
2384 ** arithmetic operations involving large integers and single
2385 floats give the same results in compiled and interpreted code.
2386 ** deriving the result type of COERCE no longer signals an error
2387 if the derived type of the second argument is a MEMBER type
2388 containing invalid type specifiers.
2389 ** ADJOIN with constant NIL as second argument works correctly.
2390 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2392 changes in sbcl-1.0.18 relative to 1.0.17:
2393 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2394 profiles only the current thread.
2395 * minor incompatible change: changes to SYMBOL-VALUE of constants
2396 defined with DEFCONSTANT now signal an error.
2397 * enhancement: SB-SPROF now has support for wallclock profiling,
2398 and is also able to profile specific threads. REPORT output
2399 has also additional sorting options.
2400 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2402 * optimization: structure allocation has been improved
2403 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2404 ** out of line constructors are ~10% faster.
2405 ** inline constructors are ~15% faster.
2406 ** inline constructors are capable of dynamic extent allocation
2407 (generally on x86 and x86-64, in some cases on other platforms
2409 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2411 * optimization: file compiler is now able to coalesce non-circular
2412 lists, non-base strings, and bit-vectors. Additionally, constants
2413 are never referenced through SYMBOL-VALUE at runtime.
2414 * optimization: code defining methods on PRINT-OBJECT (and other
2415 generic functions in the COMMON-LISP package) now loads faster.
2416 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2418 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2419 fasl is now deleted. (reported by Attila Lendvai)
2420 * bug fix: READ-LINE always returned NIL for the last line in files.
2421 (reported by Yoshinori Tahara)
2422 * bug fix: more accurate disassembly annotations of foreign function
2423 calls. (thanks to Andy Hefner)
2424 * bug fix: trimming non-simple strings and non-string string
2425 designators when the there is nothing to trim works properly.
2426 (thanks to James Knight)
2427 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2428 (thanks to Travis Cross)
2429 * fixed some bugs revealed by Paul Dietz' test suite:
2430 ** NIL is a valid function name (regression at 1.0.13.38)
2431 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2432 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2433 fill pointers properly (regression at 1.0.12.23)
2434 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2435 displacement indices properly (regression at 1.0.12.23)
2437 changes in sbcl-1.0.17 relative to 1.0.16:
2438 * temporary regression: user code can no longer allocate closure
2439 variable storage on stack, due to bug 419 without explicitly
2440 requesting it. Please consult sbcl-devel for advice if you need to
2441 use this feature in the meanwhile.
2442 * new feature: runtime argument --control-stack-size can be used to
2443 adjust thread default control stack size.
2444 * enhancement: improved TIME output
2445 ** all times are reported using the measured accuracy (milliseconds
2446 for real and GC times, microseconds for everything else.)
2447 ** processor cycle counts on x86 and x86-64.
2448 ** interpreted forms are counted for both evaluator modes.
2449 ** number of lambdas converted by the compiler is reported.
2450 ** CPU percentage report (computed from real and total run time.)
2451 ** more comprehensive run time reporting, using a condenced format
2452 ** interperted form, lambda, and page fault counts are omitted
2454 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2456 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2457 * optimization: two argument forms of LAST are upto ~10% faster
2458 in normal SPEED policies.
2459 * optimization: NCONC no longer needs to heap cons its &REST list
2460 in normal SPEED policies.
2461 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2462 to Sidney Markowitz)
2463 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2464 regression since 1.0.9.1. (thanks to Eric Marsden)
2465 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2466 since 1.0.15.36. (thanks to Paul Khuong)
2467 * bug fix: LAST when always returned the whole list when given a bignum
2468 as the second argument.
2469 * bug fix: dynamic extent allocation of nested lists and vectors
2470 could leak to otherwise accessible parts.
2471 * bug fix: invalid optimization of heap-allocated alien variable
2473 * bug fix: fasl header checking is less vulnerable to different
2474 platform word lengths.
2475 * bug fix: more correct assembler syntax for GNU binutils
2476 2.18.50.0.4 support. (thanks to Marijn Schouten)
2477 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2479 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2480 declarations) successfully. (reported by Attila Lendvai)
2482 changes in sbcl-1.0.16 relative to 1.0.15:
2483 * minor incompatible change: revert the changes to sb-posix's error
2484 signaling added in 1.0.14.
2485 * minor incompatible change: change PROBE-FILE back to returning
2486 NIL whenever we can't get a truename, as was the case before 1.0.14.
2487 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2488 inherits from ERROR instead of just CONDITION.
2489 * new feature: SB-INTROSPECT can provide source locations for instances
2490 as well. (thanks to Tobias Rittweiler)
2491 * optimization: binding special variables now generates smaller code
2492 on threaded platforms.
2493 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2494 and cases where no :TEST is given but the compiler can infer that
2495 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2496 * optimization: better LOGNOT on fixnums.
2497 * optimization: modular arithmetic for a particular requested width
2498 is implemented using a tagged representation unless a better
2499 representation is available.
2500 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2501 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2502 for wellformedness and returns a specialized vector. (reported by
2503 Francois-Rene Rideau)
2504 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2505 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2506 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2507 unscheduling timer at the same time as another timer fires.
2508 * bug fix: don't reschedule timers for dead threads.
2509 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2510 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2511 bogus errors if select() was interrupted.
2512 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2514 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2515 * enhancement: cleaner backtraces for interactive interrupts, as
2516 well as other cases where the interesting frames used to be
2517 obscured by interrupt handling frames.
2518 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2519 now supported, and tracing a whole package using (TRACE "FOO") now
2520 traces SETF-functions as well.
2521 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2522 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2523 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2524 * unreadably printed representation of hash-tables now includes
2526 * bug fix: partially fixed #188: type propagation from assignments
2527 is now more efficient.
2528 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
2529 'DOUBLE-FLOAT) are not flushable.
2530 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
2531 full address of the object, and none of the tag bits.
2532 * bug fix: readably printing hash-tables now respects other printer
2533 control variables. (reported by Cedric St-Jean)
2534 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
2535 keyword with MAKE-HASH-TABLE.
2536 * bug fix: export SB-POSIX:MKSTEMP.
2537 * bug fix: SORT was not interrupt safe.
2538 * bug fix: XREF accounts for the last node of each basic-block as
2540 * bug fix: MAKE-INSTANCE optimizations interacted badly with
2541 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
2542 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2543 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2544 create obsolete instances in the case of redefinition or
2545 obsoletion of a superclass. (thanks to Andy Hefner)
2546 * bug fix: Support for the Alpha architecture has been revived; it had
2547 suffered somewhat from lack of maintenance since sbcl-1.0.
2548 * improvements to the Windows port:
2549 ** The system detects the codepage to use at startup, instead of
2550 using the value from the saved core. (thanks to Kei Suzuki)
2552 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2553 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2554 (see documentation for details.)
2555 * revived support for OpenBSD (contributed by Josh Elsasser)
2556 * partially fixed bug #108: ROOM no longer suffers from occasional
2557 (AVER (SAP= CURRENT END)) failures.
2558 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2559 bodies no longer cause a WARNING to be signalled. (reported by
2561 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2562 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2563 the bug in TRUNCATE.) (reported by Michael Weber)
2564 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2565 no samples. (reported by Andy Hefner)
2566 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2567 no longer appear as (NIL ...) frames in backtraces.
2568 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2569 is now actually exported from SB-EXT as documented. (reported by
2571 * bug fix: sb-aclrepl now correctly understands how to inspect
2572 single-floats on 64-bit platforms where single-floats are not boxed.
2573 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2574 yet been finalized. (reported by Levente Meszaros)
2575 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2576 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2577 SBCL-specific optimize qualities.
2579 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2580 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2581 an executable in the search path, and does so in the child
2582 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2583 been removed; it can be found in the CVS history, for somebody who
2584 needs that search behavior (see the manual).
2585 * minor incompatible change: compiler policy re. weakening type
2586 checks has changed: now type checks are weakened only if SAFETY < 2
2588 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2589 unparsing of directory pathnames as files. Analogously,
2590 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2591 filename to parse into a directory pathname.
2592 * enhancement: implicit generic function creation now signals a
2593 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2594 users can bind handlers for and muffle around calls to LOAD.
2595 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2596 to be used (using the default stream external format), and allows
2597 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2598 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2599 strings and vectors whose element-type or simplicity is not fully
2600 known at compile-time.
2601 * optimization: STRING-TRIM and related functions no longer allocate
2602 a new string when no trimming needs to be performed. These functions
2603 are also faster than before when the input string has been declared
2605 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2606 * optimization: READ-LINE is significantly faster for files containing
2608 * optimization: non-open coded uses of character comparison operators
2609 (e.g. char=) no longer cons when called with more than one parameter
2610 on platforms supporting dynamic-extent allocation.
2611 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2612 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2613 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2615 * bug fix: some sequence functions elided bounds checking when
2617 * bug fix: too liberal weakening of union-type checks when SPEED >
2619 * bug fix: more bogus fixnum declarations in ROOM implementation
2622 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2623 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2624 :SYNCHRONIZED argument, which makes the hash-table safe for
2625 concurrent accesses (but not iteration.) See also:
2626 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2627 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2628 * optimization: CONCATENATE on strings is an order of magnitude faster
2629 in code compiled with (> SPEED SPACE).
2630 * optimization: SUBSEQ is ~50% faster on lists.
2631 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2632 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2633 END is smaller then START.
2634 * bug fix: SB-PROFILE will no longer report extra consing for nested
2635 calls to profiled functions.
2636 * bug fix: ROOM implementation had bogus fixnum declarations which
2637 could cause type-errors when calling ROOM on large images.
2638 * bug fix: if file compilation is aborted, the partial fasl is now
2639 deleted, and COMPILE-FILE returns NIL as the primary value.
2640 * bug fix: number of thread safety issues relating to SBCL's internal
2641 hash-table usage have been fixed.
2642 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2643 be returned from its body when the values were being returned
2644 using unknown-values return convection and the W-P-O was wrapped
2645 inside an UNWIND-PROTECT.
2646 * bug fix: sb-posix should now compile again under Windows, enabling
2647 slime to work again.
2649 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2650 * incompatible change: hash-table accessor functions are no longer
2651 automatically protected by locks. Concurrent accesses on the same hash-table
2652 from multiple threads can give inconsistent results or even corrupt the
2653 hash-table completely. Multi-threaded applications should do their own
2654 locking at the correct granularity. In the current implementation it is
2655 still safe to have multiple readers access the same table, but it's not
2656 guaranteed that this property will be maintained in future releases.
2657 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2658 and will signal an error at runtime.
2659 * enhancement: SB-THREAD package now exports a semaphore interface.
2660 * enhancement: CONS can now stack-allocate on x86 and
2661 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2663 * enhancement: nested lists can now be stack allocated on
2664 platforms providing stack allocation support.
2665 * enhancement: dynamic-extent support has been extended to support
2666 cases where there are multiple possible sources for the stack
2668 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2669 if the mutex is uncontested on Linux.
2670 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2671 as specified by the CLHS. (thanks to Tobias Rittweiler)
2672 * bug fix: NaN comparison now works on x86-64.
2673 * bug fix: CLOSE :ABORT T on a stream with pending output now
2675 * bug fix: instances of non-standard metaclasses using standard
2676 instance structure protocol sometimes missed the slot type checks
2678 * bug fix: known functions can be inlined in high-debug code.
2680 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2681 * minor incompatible change: the MSI installer on Windows no longer
2682 associates .lisp and .fasl files with the installed SBCL.
2683 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2684 on Windows. (thanks to Luis Oliviera)
2685 * new feature: SB-CLTL2 contrib module now implements
2686 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2687 * optimization: scavenging weak pointers is now more efficient,
2688 requiring O(1) instead of O(N) per weak pointer to identify
2689 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2690 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2691 method bodies using constant slot-names when the first argument is
2692 a specializer parameter for the method.
2693 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2694 names, when the class of the instance is a direct instance
2695 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2696 as slow as the constant slot-name case.)
2697 * optimization: member type construction is now O(N) instead
2699 * optimization: UNION and NUNION are now O(N+M) for large
2700 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2702 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2703 now more readable in environments like Slime which display it.
2704 (thanks to Tobias C. Rittweiler)
2705 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2706 was able to infer the correct argument type for the object on which
2707 the CAS operation was being performed.
2708 * bug fix: copy propagation interfered with parallel assignment
2709 semantics in local calls. (reported by Paul Khuong)
2710 * bug fix: the signed modular fixnum shift compiled to wrong code on
2711 x86 and x86-64. (spotted by a slight modification to some of
2714 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2715 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2716 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2717 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2719 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2720 and generic function now print the object identity for anonymous
2721 instances. (thanks to Attila Lendvai)
2722 * enhancement: as an extension to MOP, SBCL now supports SETF of
2723 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2724 (thanks to Attila Lendvai)
2725 * enhancement: sb-cover has an alternate annotation mode which puts
2726 the form annotations at the car of the form, instead of annotating
2727 it completely. The benefit of this mode is that it shows better
2728 which forms were instrumented by the compiler.
2729 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2730 by printer control variables. (reported by Dan Corkill)
2731 * bug fix: system leaked memory when delayed output was performed by
2732 the OS in smaller chunks then expected. (thanks to David Smith)
2733 * bug fix: system leaked memory when file streams were not closed
2735 * bug fix: large objects written to slow streams that were modified
2736 after the write could end up with the modified state written to
2737 the underlying file descriptor.
2738 * bug fix: multiple threads operating in parallel on the same stream
2739 could cause buffer-overflows.
2740 * bug fix: source location information is stored correctly
2741 (broken since 1.0.6). This bug would generally show up as the
2742 Slime debugger highlighting the wrong form when the sldb-show-source
2744 * bug fix: Branch forms are again annotated as branches in the sb-cover
2746 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2747 on x86-64. (reported by Gregory Vanuxem)
2748 * bug fix: EQUALP could return wrong results for structures with raw
2749 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2750 word). (reported by Vjacheslav Fyodorov)
2751 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2754 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2755 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2756 atomic compare-and-swap operations on threaded platforms.
2757 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2758 allows assigning a global minimum value to optimization qualities
2759 (overriding proclamations and declarations).
2760 * enhancement: closed over variables can be stack-allocated on x86
2762 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2764 * optimization: slot definition lookup is now O(1). This speeds up
2765 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2766 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2767 * optimization: ASSOC and MEMBER can now be open-coded for all
2768 combinations of keyword arguments when second argument is constant
2769 and SPEED >= SPACE. In other cases a specialized version is
2771 * bug fix: using obsoleted structure instances with TYPEP and
2772 generic functions now signals a sensible error.
2773 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2774 (reported by Kristoffer Kvello)
2775 * bug fix: backtrace construction is now more careful when making
2776 lisp-objects from pointers on the stack, to avoid creating bogus
2777 objects that can be seen by the GC.
2778 * bug fix: defaulting of values in contexts expecting more than 7
2779 variables now works on x86-64. (reported by Christopher Laux)
2780 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2782 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2783 as the property-list of a symbol.
2784 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2785 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2786 situations requested, are once again file-compileable. (reported
2789 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2790 * MOP improvement: support for user-defined subclasses of
2791 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2792 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2793 the expansion of DEFMETHOD, is responsible for generating a form
2794 which creates a list of specializers when evaluated. Additional
2795 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2796 debugging and introspective support.
2797 * minor incompatible change: the (unsupported) spinlock interface
2798 has changed: free spinlock now has the value NIL, and a held spinlock
2799 has the owning thread as its value.
2800 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2801 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2803 * enhancement: name of a socket-stream is now "a socket" instead of
2804 "a constant string".
2805 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2806 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2807 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2808 for generic functions. (Thanks to Tobias C. Rittweiler)
2809 * optimization: bignum printing speed has been improved by 20-40%
2810 (depending on the bignum size.)
2811 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2813 * bug fix: the cache used by the CLOS to store precomputed effective
2814 methods, slot offsets, and constant return values is now thread and
2816 * bug fix: generic function dispatch function updating is now thread
2817 and interrupt safe (in the sense that the known issues have been
2819 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2820 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2821 * bug fix: asdf systems with dependencies to the SB-POSIX or
2822 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2823 * bug fix: interrupt safety of applicable method computation has been
2826 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2827 * new contrib: sb-cover, an experimental code coverage tool, is included
2828 as a contrib module.
2829 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2830 significantly faster.
2831 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2832 produce more efficient code on x86-64 if the compiler can determine
2833 that (+ INDEX <constant>) does not require a bounds check and FOO
2834 has an element type at least 8 bits wide.
2835 * enhancement: a new, experimental synchronous timeout facility is
2836 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2837 * enhancement: when a symbol name conflict error arises, the
2838 conflicting symbols are always printed with a package prefix.
2839 (thanks to Kevin Reid)
2840 * enhancement: stepping is now once again supported on the SPARC and
2841 MIPS platforms. (It is also now more likely to work on CheneyGC
2843 * enhancement: sb-sprof can now also track and report accurate call
2845 * bug fixes: the treatment of non-standard subclasses of
2846 SB-MOP:SPECIALIZER is more correct.
2847 * incompatible change: PURIFY no longer copies the data from the
2848 dynamic space into the static and read-only spaces on platforms
2849 that use the generational garbage collector
2850 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2852 * bug fix: GC race condition occasionally resulting in crashes with
2853 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2855 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2857 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2858 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2859 * bug fix: an asynchronous interrupt could previously leave the
2860 system running with GC inhibited.
2861 * bug fix: a DECLARE form evaluated at top-level now causes an error
2862 rather than silently (or verbosely) returning NIL.
2863 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2864 result in a error being signalled due to source form lookup errors.
2865 (reported by Peter Graves)
2867 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2868 * incompatible change: removed writer methods for host-ent-name,
2869 host-ent-addresses -- changing the values did not update the DNS
2871 * minor incompatible change: changed experimental JOIN-THREAD interface
2872 * documentation: the manual now lists reader and writer methods
2873 in class slot documentation sections. (thanks to Richard M Kreuter)
2874 * documentation: unwinding from asyncronous events has been
2875 documented as unsafe.
2876 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2877 in multithreaded application code.
2878 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2879 platforms. (thanks to James Anderson for the optimization hint)
2880 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2882 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2883 variants no longer cons.
2884 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2885 their NOT- variants no longer cons.
2886 * optimization: EQUAL hash tables no longer use SXHASH for objects
2887 of all data types, but instead use an EQL hash for types for which
2888 EQUAL is the same as EQL.
2889 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2890 are significantly faster.
2891 * optimization: new STRING-OUTPUT-STREAM implementation is much
2892 faster for large outputs and conses 30% less on average.
2893 * enhancement: XREF information is now collected for references made
2894 to global variables using SYMBOL-VALUE and a constant argument.
2895 * enhancement: SIGINT now causes a specific condition
2896 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2897 * bug fix: FILE-POSITION used to signal an error in some cases where
2898 ANSI requires it to return NIL.
2899 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2900 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2901 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2903 * bug fix: bad type declaration in the CLOS implementation has
2904 been fixed. (reported by James Anderson)
2905 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2906 (thanks to Lutz Euler)
2907 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2908 required by the CLHS. (reported by Samium Gromoff)
2909 * bug fix: dead unbound variable references now signal an error.
2910 (reported by Marco Monteiro)
2911 * bug fix: / with an unused value was being deleted in safe code.
2912 (thanks to Marco Monteiro and Kevin Reid)
2913 * bug fix: number of characters that can be written onto a single
2914 line in a file is unlimited.
2915 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2916 been fixed by inhibiting interrupts for when GC is disabled.
2917 * bug fix: some interrupt safety issues with GETHASH, (SETF
2918 GETHASH), CLRHASH and REMHASH have been fixed.
2919 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2920 specifier no longer causes infinite recursion.
2921 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2922 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2923 * bug fix: an &environment argument with the correct variable information
2924 is passed to macros that are expanded during byte compilation.
2925 (reported by Samium Gromoff)
2926 * bug fix: a logic error was causing the hash function for bignums to
2927 have excessive amounts of collisions. (reported by Faré Rideau)
2928 * bug fix: modifying the contents of an array could change the return
2929 value of SXHASH on that array, which is only allowed for strings
2930 and bit vectors. (bug introduced in 0.9.16)
2931 * improvement: the x86-64/darwin port now passes all tests (except
2932 for the debugger tests) but should still be considered
2933 experimental until this is fixed.
2934 * improvement: a style-warning is signaled for CASE (etc) clauses with
2935 duplicate keys. (thanks to Kevin Reid)
2936 * improvement: macos/x86 and macos/x86-64 now use mach exception
2937 handlers for dealing with illegal instructions (for trapping and
2938 error handling) and memory protection violations (for GC).
2940 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2941 * new platform: experimental support for x86-64/darwin (MacOS).
2942 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2943 and getnameinfo sockets functions are used instead of gethostbyaddr
2944 and gethostbyname, on platforms where the newer functions are available.
2945 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2947 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2948 don't print the startup banner, but behave as if --noinform was passed
2949 as a command line argument. (thanks to Kevin Reid)
2950 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2951 * optimization: code using alien values with undeclared types is much faster.
2952 * optimization: the compiler is now able to open code SEARCH in more cases.
2953 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2954 * bug fix: using standardized COMMON-LISP special variables as loop
2955 variables no longer signals bogus package lock violations. (reported
2957 * bug fix: declaring local loop variables to be of a range-limited type
2958 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2959 (reported by Andras Simon)
2960 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2961 bugs remain on x86-64.)
2962 * bug fix: the #= and ## reader macros now interact reasonably with
2963 funcallable instances.
2964 * bug fix: type-checks for function arguments were compiled using the
2965 compiler policy settings of the wrong lexical environment (in 1.0.2
2967 * bug fix: SHADOW accepts characters as string designators, as required
2968 by the spec (thanks to Eric Marsden)
2969 * bug fix: fixed GC safety issues when foreign functions are called with
2970 non-base strings as arguments
2971 * bug fix: more consistent error output for fatal-compiler-warnings, like
2973 * bug fix: functions with proper names were showing up as NIL in
2974 backtraces (reported by Edi Weitz, regression in 1.0.2)
2976 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2977 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2978 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2979 produce more efficient code on the x86 if the compiler can determine
2980 that (+ INDEX <constant>) does not require a bounds check and FOO
2981 has an element type at least 8 bits wide.
2982 * bug fix: references to undefined variables are handled the same way
2983 in toplevel forms as in the normal compiler
2984 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2986 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2987 (thanks to Jon Buller)
2988 * improvement: faster compilation times for complex functions
2989 * improvement: added readlink support to SB-POSIX (thanks to Richard
2992 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2993 * improvement: experimental support for mach exception handling on
2994 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2996 * improvement: support for GBK external format.
2997 (thanks to Chun Tian (binghe))
2998 * improvement: the debugger now displays variables that have been closed
2999 over, in code compiled with (DEBUG 2) or higher
3000 * improvement: support for executable cores on NetBSD (thanks to
3002 * new feature: added a RESTART-FRAME debugger command
3003 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
3004 be used to provide an implementation for FILE-POSITION on Gray streams
3005 (thanks to Eric Marsden)
3006 * new feature: add syslog, openlog and closelog support to SB-POSIX
3007 (thanks to Richard Kreuter)
3008 * optimization: the function call overhead in code compiled with
3009 a high DEBUG optimization setting is significantly
3010 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
3011 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
3012 (thanks to Tony Martinez)
3013 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
3014 evaluated once (reported by Kevin Reid)
3015 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
3016 works again (thanks to Kilian Sprotte)
3017 * bug fix: an error is signaled for tagbodies with duplicate tags
3018 (thanks to Stephen Wilson)
3019 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
3020 * bug fix: Win32 port can now handle foreign code unwinding Lisp
3021 stack frames from alien callbacks.
3022 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
3023 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
3024 65k pages (thanks to David Woodhouse)
3025 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
3027 changes in sbcl-1.0.1 relative to sbcl-1.0:
3028 * new platform: FreeBSD/x86-64, including support for threading.
3029 * new feature: the compiler stores cross-referencing information
3030 about function calls (who-calls), macroexpansion (who-macroexpands)
3031 and special variables (who-binds, who-sets, who-references) for code
3032 compiled with (< SPACE 3). This information is available through the
3033 sb-introspect contrib.
3034 * new feature: users may subclass SEQUENCE, and have instances of
3035 these classes interoperate with standard Common Lisp functions if
3036 a number of methods are defined. (This feature is experimental
3037 and the interface subject to change based on feedback from SBCL
3038 users and the general community)
3039 * improvement: sb-sprof traces call stacks to an arbitrary depth on
3040 x86/x86-64, rather than the previous fixed depth of 8
3041 * improvement: another pthread back-end of mutex "pthread-futex".
3042 * bug fix: non-ascii command-line arguments are processed correctly
3043 (thanks to Yaroslav Kavenchuk)
3044 * bug fix: non-required arguments were not passed correctly when a method
3045 defined using DEFMETHOD was called from a mop-generated method using
3046 CALL-NEXT-METHOD (reported by Pascal Costanza)
3047 * bug fix: recursion is now permitted in accessors through
3048 SLOT-UNBOUND. (reported by Pascal Costanza)
3049 * bug fix: an error was signaled at startup if the HOME environment
3050 variable was defined, but had an empty value (reported by Peter Van Eynde)
3051 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
3052 signal a PROGRAM-ERROR, not a BUG.
3053 * bug fix: SB-POSIX:READDIR works when built with large file support.
3054 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
3056 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
3057 for better automatic indentation support. (thanks to Matt Pillsbury)
3058 * optimization: loading generic functions no longer takes O(n^2) time,
3059 proportional to the amount of methods in the generic function
3060 (reported by Todd Sabin and Jeremy Brown)
3061 * optimization: the FIND and POSITION family of sequence functions
3062 are significantly faster on arrays whose element types have been
3064 * improvements to the Windows port:
3065 ** Intermittent heap corruption problems have been fixed. (thanks
3066 to Alastair Bridgewater)
3067 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
3069 ** Lisp is able to unwind foreign exception frames from alien
3070 callbacks. (thanks to Alastair Bridgewater)
3072 changes in sbcl-1.0 relative to sbcl-0.9.18:
3073 * improvement: experimental support for threading on FreeBSD/x86.
3074 (thanks to NIIMI Satoshi)
3075 * improvement: runtime option --dynamic-space-size can be used
3076 to set the size of the dynamic space reserved on startup.
3077 * improvement: floating point modes in effect are now saved in
3078 core, and restored on startup.
3079 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
3080 startup, not time since first call to GET-INTERNAL-REAL-TIME.
3081 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
3082 threads are not running after *SAVE-HOOKS* have run.
3083 * improvement: writes to CLOS instance slots are type-checked in code
3084 compiled with (SAFETY 3)
3085 * improvement: floating-point exception handling on FreeBSD (thanks to
3087 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
3088 (thanks to Zach Beane)
3089 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
3091 * improvement: added support for the Shift-JIS external format.
3092 (contributed by NIIMI Satoshi)
3093 * improvement: callbacks are supported on Linux/PPC. (thanks to
3095 * bug fix: compiler bug triggered by a (non-standard) VALUES
3096 declaration in a LET* was fixed. (reported by Kaersten Poeck)
3097 * bug fix: file compiler no longer confuses validated and already
3098 dumped structurres. (reported by Kaersten Poeck)
3099 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
3100 fill-pointer signals a type-error as required. (thanks to
3102 * bug fix: disassemly of funcallable instances works.
3103 * bug fix: single stepping on PPC.
3104 * bug fix: fix thread-safety problems in the type system (generally
3105 manifesting as nonsensical errors like "STRING is a bad type specifier
3106 for sequences" or "The value 1 is not of type FIXNUM")
3107 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
3108 (reported by Josip Gracin)
3109 * bug fix: an error is signaled for attempts to displace arrays with
3110 incompatible element types (thanks to Mario Mommer)
3111 * bug fix: more correct handling of wide characters in debug info
3112 (bug reported by Attila Lendvai and fixed by Juho Snellman)
3113 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
3114 and don't cause extra consing
3115 * optimization: MAP and MAP-INTO are significantly faster on vectors
3116 whose elements types have been declared.
3117 * Improvements to SB-SPROF:
3118 ** Support for allocation profiling
3119 ** Reduced profiling overhead, especially for long profiling runs
3120 * Improvements to the Windows port:
3121 ** floating point exceptions are now reported correctly.
3122 ** stack exhaustion detection works partially.
3123 ** more accurate GET-INTERNAL-REAL-TIME.
3124 ** better RUN-PROGRAM behaviour in case of errors in the child
3126 ** PROBE-FILE now simplifies pathnames correctly.
3127 ** DIRECTORY now works correctly with :WILD-INFERIORS.
3128 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
3129 1st 1970 (although time timezone data will be unreliable).
3130 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
3132 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
3133 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
3134 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
3136 * bug fix: two potential GC deadlocks affecting threaded builds.
3137 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
3138 returns T (reported by Anton Kazennikov)
3139 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
3140 with non-variable places
3141 * bug fix: remove a race condition in the setting of
3142 funcallable-instance functions, this should make threaded CLOS
3143 code more stable against memory faults.
3144 * bug fix: corruption of specials when unbinding is interrupted by an
3145 asynchronous unwind (reported by Hannu Koivisto)
3146 * improvement: the debugger will now also display local variables that
3147 are only used once, for code compiled with a DEBUG optimization quality
3150 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
3151 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
3152 * incompatible change: External-format support for FFI calls. The
3153 SB-ALIEN:C-STRING no longer implies an ASCII
3154 external-format. Instead the string is subject to external-format
3155 conversion. Additionally return values of type SB-ALIEN:C-STRING
3156 are by default of type (SIMPLE-ARRAY CHARACTER), not
3157 SIMPLE-BASE-STRING. For an alien type that behaves like the old
3158 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
3159 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
3160 * incompatible change: SB-EXT package no longer contains the
3161 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
3162 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
3164 * incompatible change: the single-stepper is no longer available
3165 on Alpha, Mips and Sparc platforms.
3166 * minor incompatible change: the direct superclasses of
3167 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
3168 not (STANDARD-OBJECT FUNCTION). This makes the
3169 class-precedence-lists of GENERIC-FUNCTION and
3170 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
3172 * minor incompatible change: the default stream external format on
3173 non-unicode SBCL is no longer detected from the locale, but is always
3175 * new feature: Add a version of evaluator that uses an interpreter instead
3176 of the compiler. EVAL still uses the compiler by default, to switch it
3177 to use the interpreter, set the value of the variable
3178 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
3179 * minor incompatible change: the single-stepper REPL has been merged
3180 with the normal debugger (see the "Stepping" heading of the debugger help
3181 for more details). The debugger command STEP will no longer switch
3182 to the single-stepper REPL.
3183 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
3184 for a type now works.
3185 * bug fix: loading of default sysinit file works. (thanks to Leonid
3187 * bug fix: better detection of circularities in the file-compiler.
3188 (reported by Marco Monteiro)
3189 * bug fix: the CL pathname functions now work with files that have
3190 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
3191 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
3192 systems with Unix98 pty semantics.
3193 * bug fix: ASDF-INSTALL will now work with bsd tar.
3194 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
3196 * bug fix: timers expiring in dead threads no longer cause a
3197 type-error (reported by Paul "Nonny Mouse").
3198 * bug fix: thanks to more lightweight single-stepper instrumentation,
3199 code compiled with (DEBUG 3) will compile and execute significantly faster,
3200 and will have more accurate type-inferencing than before
3201 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
3202 whose bindings are modified
3203 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
3204 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
3205 ** replace dummy implementations of CL:MACHINE-INSTANCE and
3206 CL:SOFTWARE-VERSION with proper version
3208 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
3209 * feature: implemented the READER-METHOD-CLASS and
3210 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
3211 as specified by AMOP.
3212 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
3214 * optimization: faster LOGCOUNT implementation on x86 and x86-64
3215 (thanks to Lutz Euler)
3216 * optimization: hashing of general arrays and vectors has been
3217 improved. (reported by Any Fingerhut)
3218 * enhancement: SB-INTROSPECT is now able to find definitions of
3219 profiled functions. (thanks to Troels Henriksen)
3220 * enhancement: compiler-macro expansion applies now to FUNCALL forms
3221 as well, allowing compiler-macros for SETF-functions to expand.
3222 * enhancement: step-instrumentation no longer wraps known
3223 single-value functions with multiple-value context, allowing
3224 better type inference.
3225 * fixed bug #337: use of MAKE-METHOD in method combination now works
3226 even in the presence of user-defined method classes. (reported by
3227 Bruno Haible and Pascal Costanza)
3228 * fixed bug #339(c): if there are applicable methods not part of any
3229 long-form method-combination group, call INVALID-METHOD-ERROR.
3230 (reported by Bruno Haible)
3231 * fixed bug #361: the :FUNCTION initarg in the protocol for
3232 initialization of methods can now be used to override
3233 internally-produced optimized functions. (reported by Bruno
3235 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
3236 system-provided lambda expression no longer cause warnings about
3237 unbound #:|pv-table| symbols.
3238 * bug fix: improved the handling of type declarations and the
3239 detection of violations for keyword arguments with non-constant
3241 * bug fix: potentially erronous calls to PATHNAME and
3242 MERGE-PATHNAMES were being flushed in some cases.
3243 (reported by Richard Kreuter)
3244 * bug fix: compiled calls to TYPEP were mishandling obsolete
3245 instances. (reported by James Bielman and Attila Lendvai)
3246 * bug fix: format strings with ~> without matching ~< no longer
3247 trigger an AVER, but signal an understandable error instead.
3248 (reported by Antonio Martinez)
3249 * bug fix: specifying an output-file without a pathname-type for
3250 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
3251 of input-file instead of "fasl". (reported by Robert Dodier)
3252 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
3253 (reported by James Y Knight).
3254 * bug fix: compiler-macros-function did not consider the environment
3255 argument for shadowing by local functions.
3256 * bug fix: compiler-macros expansion was inhibited by local INLINE
3258 * bug fix: inline expansions of known functions were subject to
3259 step-instrumentation in high debug policies, leading to problems
3260 with type-inference.
3261 * bug fix: compiler failed to differentiate between different CONS
3262 types in some cases.
3263 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
3264 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
3265 * bug fix: #368: incorrect use of expressed vs. upgraded array
3267 * bug fix: #306a: more precise unions of array types.
3268 * thread-safety improvements:
3269 ** CONDITION-WAIT could return early on Linux, if the thread was
3270 interrupted and subsequently continued with SIGCONT.
3271 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
3273 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
3274 * added support for the ucs-2 external format. (contributed by Ivan
3276 * minor incompatible change: pretty printing of objects of type
3277 (cons symbol) is, in the default pprint-dispatch-table, now
3278 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3280 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3281 called later in a class's lifetime, possibly as late as when the
3282 first instance of the class is created. Previously,
3283 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3284 class became finalizeable.
3285 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3286 for multibyte external-format streams. (thanks to "vbzoli")
3287 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3288 with :ALLOCATION :CLASS inherited from superclasses of the
3290 * fixed bug: anonymous classes can now be created using the :NAME
3291 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3292 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3293 * fixed bug: core-files saved with :EXECUTABLE T can again be
3294 executed when SBCL_HOME isn't set. (reported by James Knight)
3295 * fixed bug: toplevel LOCALLY forms with declarations could
3296 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3297 * fixed bug: printing from several different threads using different
3298 values of *print-case* could cause invalid output, due to
3299 some internal special variables of the printer not being bound
3300 thread-locally (reported by Max Mikhanosha)
3301 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3302 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3303 (reported by Pascal Costanza)
3304 * fixed bug: FINALIZE-INHERITANCE is called from
3305 REINITIALIZE-INSTANCE on classes when the class has previously
3306 been finalized, as required by AMOP.
3307 * minor code generation optimizations:
3308 ** better register allocation in CLOS dispatching functions
3309 ** overflow detection when coercing signed bytes to fixnums on x86-64
3310 ** is now implemented with one IMUL instruction instead of three shifts
3311 ** more efficient bit-vector access on x86 and x86-64
3312 ** more efficient access to raw structure slots on x86 and x86-64
3313 * fixed some bugs revealed by Paul Dietz' test suite:
3314 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3315 return its argument.
3317 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3318 * feature: thread support on Solaris/x86, and experimental thread support
3320 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3322 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3323 default method for SLOT-UNBOUND.
3324 * minor incompatible change: prevent the user from specializing the
3325 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3326 somewhat counter to the intent of the protocol, I (CSR) think, and
3327 additionally it just doesn't work in SBCL as currently
3328 implemented, thanks to optimizations (that are always valid for
3329 the other three SLOT-VALUEish functions, but not for the setter).
3330 * minor incompatible change: the :SB-LDB feature is now enabled by
3331 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3332 the low-level debugger.
3333 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3334 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3335 down to an SB-SYS:FD-STREAM, allowing direct communication in
3336 more cases. Temporary files and pipes are still used as a fallback
3338 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3339 on the non-reentrant C functions localtime(3) and gmtime(3).
3340 * bug fix: global optimization policy was not visible in LOCALLY and
3342 * bug fix: class objects can be used as specializers in methods.
3343 (reported by Pascal Costanza)
3344 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3345 with a type error. (reported by blitz_ on #lisp)
3346 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3347 failed with a type error. (reported by Pascal Bourguignon)
3348 * bug fix: merging pathnames against defaults with :DIRECTORY
3349 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3350 (reported by James Y Knight)
3351 * bug fix: saving large (>2GB) cores on x86-64 now works
3352 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3353 constant index and a (simple-array (signed-byte 32)) array
3354 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3355 error (patch by Robert J. Macomber)
3356 * feature: TIME now displays the amount of run-time spent in GC
3357 * bug fix: The debugger now does a better job of respecting
3358 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3359 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3360 workaround for bug 403.)
3361 * bug fix: floating point exception handling now works on FreeBSD
3362 (thanks to NIIMI Satoshi)
3363 * fixed some bugs revealed by Paul Dietz' test suite:
3364 ** MISC.641: LET-conversion were not supposed to work in late
3366 * improvements to the Win32/x86 port:
3367 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3368 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3370 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3371 * new feature: source path information is generated for macro-expansion
3372 errors for use in IDE's like Slime (thanks to Helmut Eller)
3373 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3374 * bug fix: compiler does not loop forever on an invalid type in
3376 * improvement: compilation of most CLOS applications is significantly
3378 * optimization: added a limited bytecode compiler for simple toplevel
3379 forms, speeding up compilation and FASL loading
3380 * bug fix: the statistical profiler now properly distinguishes anonymous
3383 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3384 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3385 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3386 into subclasses of the finalized class. Now user calls to
3387 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3388 system return before any subclasses are finalized.
3389 * minor incompatible change: The reader no longer ignores errors
3390 regarding non-existent packages in #+ and #- feature tests.
3391 * new feature: command line options --no-sysinit, --no-userinit to
3392 inhibit loading the corresponding init files
3393 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3394 for sending data through UDP sockets (thanks to François-René Rideau)
3395 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3396 error is signalled instead (thanks to François-René Rideau)
3397 * minor incompatible change: Error signalling behaviour of lexical
3398 operations violating package locks has changed slightly. Refer to
3399 documentation on package locks for details.
3400 * enhancement: EVAL can process IF-expressions without resorting to the
3402 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3403 constant-folded properly due to missing out-of-line functions.
3404 (reported by Mika Pihlajamäki)
3405 * bug fix: LISTEN sometimes returned T even in cases where no data was
3406 immediately available from the stream
3407 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3408 were reversed. (reported by Levente Mészáros)
3409 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3410 when given a vector displaced to an adjustable array. (reported
3412 * bug fix: derivation of float boundaries from numbers outside the
3413 appropriate float range (reported by John Wiseman)
3414 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3416 * bug fix: precomputing cache entries for generic functions with
3417 some subclasses of specializers as yet invalid does not attempt to
3418 fill a cache line with a negative offset. (reported by Levente
3420 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3421 allow condition class objects as arguments to DOCUMENTATION and
3422 (SETF DOCUMENTATION); only find and set documentation for
3423 structure names for the STRUCTURE doc-type. (suggested by Gary
3425 * improvements to the Win32/x86 port:
3426 ** (user-homedir-pathname) and default initialization file
3427 locations now know about the user's "Documents and Settings"
3428 directory (thanks to Yaroslav Kavenchuk)
3429 ** run-program is implemented (thanks to Mike Thomas)
3430 ** sockets support (thanks to Timothy Ritchey)
3431 ** better backtrace support (thanks to Alastair Bridgewater)
3432 ** sb-grovel supported
3433 ** asdf-install and sb-posix work somewhat
3434 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3435 * improvements to the Solaris/x86 port:
3436 ** works on Solaris 11/Solaris Express
3437 ** floating-point exception handling support
3438 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3439 * fixed some bugs revealed by Paul Dietz' test suite:
3440 ** REMOVE-METHOD returns its generic function argument even when
3441 the method is not one of the generic functions' methods.
3442 ** objects declared as MEMBER types can be admissible arguments to
3443 structure accessors.
3444 ** printing characters should simply be printed by the FORMAT ~:C
3446 ** compiler failure when compiling functions with hairy constant
3447 defaults for optional parameters.
3448 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3449 function, which is already optimized.
3451 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3452 * new platform: experimental support for SBCL x86/Darwin, including
3453 MacOS X 10.4.5 on Intel.
3454 * new feature: Unicode character names are now known to the system
3455 (through CHAR-NAME and NAME-CHAR).
3456 * new feature: the filesystem location of SBCL's core file is
3457 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3458 * minor incompatible change: the contrib modules SB-POSIX and
3459 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3460 this change is to make it easier to distribute
3461 location-independent binaries.
3462 * bug fix: as implied by AMOP, standardized classes no longer have
3463 slots named by external symbols of public packages. (reported by
3465 * optimization: calling functions via constant symbols -- as in
3466 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3467 via the function object as in (FUNCALL #'FOO).
3468 * optimization: on x86 and x86-64, the calling convention for the
3469 case of dealing with an unknown number of values has been altered
3470 to be friendlier to the prediction heuristics implemented,
3471 particularly with reference to CALL and RET pairing. (thanks to
3472 Alastair Bridgewater)
3473 * optimization: on x86, the code for access to thread-local symbol
3474 values and binding/unbinding of thread-local symbols is smaller.
3475 (thanks to Alastair Bridgewater)
3476 * enhancement: CONSTANTP is now able to determine constantness of
3477 more complex forms, including calls to constant-foldable standardized
3478 functions and some special forms beyond QUOTE.
3479 * fixed bug: occasional GC crashes on Solaris/x86
3480 * optimization: x86-64 supports stack allocation of results of simple
3481 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3482 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3483 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3484 (thanks to James Knight)
3485 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3486 by the standard (thanks to Stephen Compall)
3488 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3489 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3490 be used for bundling the runtime and the core file into one
3491 executable binary. This feature is not currently supported on all SBCL
3492 platforms. (thanks to James Bielman and NIIMI Satoshi)
3493 * new feature: a generational or ephemeral garbage collector is now
3494 the default on the PowerPC platform (both Linux and Darwin). The
3495 old Cheney (stop and copy) collector is a build-time option.
3496 (thanks to Cyrus Harmon, after Raymond Toy)
3497 * minor incompatible change: the method by which SBCL finds its
3498 contributed modules has changed; it no longer relies on symbolic
3499 links from an $SBCL_HOME/systems directory, but searches directly
3500 in the subdirectories of $SBCL_HOME.
3501 * enhancement: the dynamic heap size on the Linux/PPC platform is
3502 markedly larger, even using the older Cheney garbage collector.
3503 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3504 certain complicated string types. (reported by Gary King)
3505 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3506 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3507 * fixed bug: DOCUMENTATION on structures no longer signals an
3508 error if no structure type of the right name exists. (reported by
3510 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3511 applicable non-standard primary or :AROUND method on
3512 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3513 no longer cause unbound variable errors. (reported by Kevin Reid)
3514 * fixed bug: metacircle resolution in cases where methods have slots
3515 added before the slots from STANDARD-METHOD. (reported by Jean
3517 * fixed bug: the Power PC assembly code for calling into lisp
3518 sometimes computed its return address wrongly (depending on the
3519 15th bit of the address, fixed at link time). This used to
3520 manifest itself in a segmentation violation while building PCL.
3521 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3522 many others over the years)
3523 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3524 the stack pointer (treated as a signed integer) is negative.
3525 (thanks to Peter van Eynde)
3527 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3528 * new platform: experimental support for the Windows operating
3529 system has been added. (thanks to Alastair Bridgewater)
3530 * fixed several bugs in and robustified the PPC FFI (including
3531 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
3532 * bug fix: allow non-simple string symbol names (reported by Paul
3534 * bug fix: interrupt handling on NetBSD (thanks to Richard M
3536 * bug fix: saving a core corrupted callbacks on x86/x86-64
3537 * bug fix: closed a loophole in metacircularity detection and
3538 grounding in the PCL implementation of CLOS.
3539 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
3540 (reported by tomppa on #lisp)
3541 * bug fix: clear the direction flag on Lisp -> C transitions, as
3542 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3543 (reported by Andrej Grozin and Hendrik Maryns)
3544 * optimization: major improvements to GC efficiency on GENCGC platforms
3545 * optimization: faster implementation of EQUAL
3546 * optimization: emit more efficient opcodes for some common
3547 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3548 * optimization: several other minor code-generation improvements on x86-64
3549 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3551 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3552 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3553 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3554 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3555 by ANSI as a generic function, and for consistency (SETF
3556 GENERIC-FUNCTION-NAME) is treated likewise.
3557 * fixed bug #233.b: make constraint propagation notice when a variable
3558 value is changed after it is referenced but before it is used
3559 * fixed bug #296: no more arbitrary behaviour from filenames with
3560 odd characters as --load arguments. (reported by Adam Warner)
3561 * fixed bug #390: :CHARACTER-SET pathname components now work as
3562 expected. (reported by Tim Daly Jr)
3563 * fixed bug #391: complicated :TYPE intersections in slot
3564 definitions no longer cause an error in PCL internals.
3565 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3566 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3567 returning the number of octets which would be written to the
3568 file-stream. (thanks to Robert J. Macomber)
3569 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3570 arguments to the internal stream functions. (thanks to David
3572 * bug fix: stack exhaustion is now handled on the x86/SunOS
3573 platform. (thanks to Daisuke Homma)
3574 * bug fix: more accurate ROOM results on GENCGC platforms
3575 * optimization: improved type inference for arithmetic-for
3576 index variables in LOOP
3577 * optimization: faster floating-point SQRT on x86-64
3578 * fixed some bugs revealed by Paul Dietz' test suite:
3579 ** DOCUMENTATION returns NIL instead of "" for method combinations
3580 that don't have a docstring
3582 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3583 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3584 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3585 therefore are not customizeable by user code (as seems to be at
3586 least permitted and maybe required by AMOP). As a consolation,
3587 however, the SBCL implementation of these functions now calls
3588 REINITIALIZE-INSTANCE as specified by AMOP.
3589 * bug fix: slot-definition documentation is propagated as per ANSI
3590 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3591 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3592 argument, as do eslotd initialization methods. (from Pascal
3593 Costanza's "Closer" project)
3594 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3595 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3597 * bug fix: it is now possible to have more than one subclass of
3598 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3599 (reported by Bruno Haible, Pascal Costanza and others)
3600 * bug fix: the dependent update protocol now works for generic
3601 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3602 and Pascal Costanza)
3603 * bug fix: condition-class instances corresponding to
3604 DEFINE-CONDITION forms are now created eagerly. (reported by
3605 Kalle Olavi Niemitalo on comp.lang.lisp)
3606 * bug fix: floating point printing is more accurate in some
3607 circumstances. (thanks to Simon Alexander)
3608 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3609 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3610 * bug fix: callbacks on OS X now preserve stack-alignment.
3611 (thanks to Cyrus Harmon)
3612 * enhancement: the x86-64 disassembler is much better at
3613 disassembling SSE instructions. (thanks to Lutz Euler)
3614 * enhancement: CHECK-TYPE on a variable now allows type-inference
3615 (thanks to Vincent Arkesteijn)
3616 * optimization: improved performance of EUC-JP external format.
3617 (thanks to NIIMI Satoshi)
3618 * optimization: performance improvements to IO on file streams of
3619 :ELEMENT-TYPE CHARACTER
3620 * optimization: much faster memory allocation on x86-64
3621 * optimization: faster garbage collections (latency and throughput)
3623 * optimization: faster bignum subtraction and division on x86 and x86-64
3624 (thanks to Lutz Euler)
3625 * optimization: more accurate type-inference for loops that use a
3626 floating point index variable or a negative step.
3628 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3629 * bug fix: add a workaround to SBCL looping infinitely at startup on
3630 Linux kernels with apparently buggy implementations of personality().
3631 (thanks to Svein Ove Aas)
3632 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3633 (thanks to David Lichteblau)
3634 * bug fix: local bindings shadow global symbol macros for
3635 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3636 * optimization: non-open coded uses of numeric comparison operators
3637 (e.g. >) no longer cons when called with more than one parameter
3638 on platforms supporting dynamic-extent allocation.
3639 * enhancement: saving cores with foreign code loaded is now supported
3640 on MIPS/Linux in addition to the previously supported platforms.
3641 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3642 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3643 * bug fix: division by zero in sb-sprof when no samples were collected
3644 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3645 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3646 (thanks to Alexander Kjeldaas)
3647 * new feature: ignoring the return values of destructive functions
3648 like NREVERSE signals a compile-time style-warning.
3649 (thanks to Kevin Reid)
3650 * new feature: the alignment of alien structure fields can be
3651 explicitly specified. (thanks to Cyrus Harmon)
3652 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3653 and dump core on SIGQUIT
3655 ** incompatible change: threads do not inherit values of specials
3656 from their parents (see manual)
3657 ** bug fix: threads stacks belonging to dead threads are freed by the
3658 next exiting thread, no need to gc to collect thread stacks anymore
3659 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3660 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3661 ** bug fix: dynamic variable and thread start related gc lossage
3662 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3664 * fixed some bugs revealed by Paul Dietz' test suite:
3665 ** SUBTYPEP is slightly more accurate on heinously complicated
3666 CONS types where some of the members have uncertain (in the
3667 NIL, NIL sense) type relationships to each other.
3669 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3670 no longer purified unless :PURIFY T is explicitly specified.
3671 ** Non-purified cores are significantly smaller than before
3673 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3674 * new feature: timers based on Zach Beane's excellent timer package
3675 * added support for the following external formats: koi8-u,
3676 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3677 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3678 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3679 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3680 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3681 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3682 * incompatible change: a threaded SBCL will no longer revert to
3683 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3684 * bug fix: interrupts are disabled until startup is complete; no
3685 more sigsegvs when receiving a signal to soon
3686 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3688 * bug fix: add a workaround for the memory randomization features in
3689 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3690 workaround will only be in effect on systems with the proc filesystem
3692 * bug fix: printing objects of type HASH-TABLE signals a
3693 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3695 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3696 have been running for over 50 days. (reported by Gilbert Baumann)
3697 * bug fix: the logic for getting names of functions gets less
3698 confused when confronded with alternate-metaclass
3699 funcallable-instances. (reported by Cyrus Harmon)
3700 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3701 consistent, even on internal alternate-metaclass objects.
3702 * bug fix: flush closure information collected by physical
3703 environment analysis prepass before the main pass. (bug reported
3705 * bug fix: compiler pack phase does not modify a hashtable, which is
3706 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3707 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3708 may be expanded. (reported by Alexander <malishev> on c.l.l)
3709 * bug fix: no more style-warnings when compiling code using LAST
3710 under high-SPEED low-SPACE settings. (reported by David Wallin
3712 * fixed some incompatibilities between SBCL's MOP and the MOP
3714 ** the METAOBJECT class is now implemented;
3715 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3716 STANDARD-OBJECT, as required;
3717 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3718 now compatible (as required by VALIDATE-SUPERCLASS); there
3719 remains a consistency requirement over the presence or absence
3720 of the FUNCTION class in the superclass list of finalized
3721 classes; see the manual for more details;
3722 ** the :AROUND method for COMPUTE-SLOTS on
3723 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3724 requested slot ordering.
3726 ** bug fix: parent thread now can be gc'ed even with a live
3728 ** bug fix: binding a special with PROGV to no value is not
3729 the same as that symbol not having been bound (thanks to
3731 ** bug fix: binding specials is thread safe (thanks to
3733 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3734 and SB-SPROF do not die with 'no handler for signal XX in
3735 interrupt_handle_now(..)' anymore
3736 ** bug fix: WITH-TIMEOUT works with multiple running threads
3737 * fixed some bugs revealed by Paul Dietz' test suite:
3738 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3739 the :method-class keyword argument.
3741 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3742 * new port: the Solaris operating system on x86 processors is now
3743 mostly supported, though some rough edges in the environment
3744 remain. (thanks to Daisuke Homma)
3745 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3746 space for its heap. (thanks to Thiemo Seufer)
3747 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3748 closures. (thanks to Thiemo Seufer)
3749 * minor incompatible change: eof selects abort in the debugger.
3750 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3751 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3753 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3754 deprecated, and will go away in a future revision of SBCL.
3755 * minor incompatible change: GC-ON and GC-OFF are no longer
3756 implemented with a counter, it does not matter how many times gc
3757 is switched on or off
3758 * bug fix: discriminating functions for generic function classes
3759 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3760 make invalid assumptions about method precedence order. (reported
3762 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3763 platforms. (thanks to Thiemo Seufer)
3764 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3765 * bug fix: correct pathname printing with printer escaping is on.
3766 (thanks to Kevin Reid)
3767 * bug fix: complex VOP definitions in "user-space" no longer trigger
3768 package locks. (reported by Zach Beane)
3769 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3770 for funcallable-instance functions, and is no different from
3772 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3773 characters in the current readtable. (reported by Nicholas Neuss)
3774 * bug fix: SUBTYPEP on various CONS types returns more a more
3775 accurate acknowledgment of its certainty.
3776 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3777 lists in some cases. This partially fixes bug 384.
3778 * flush all standard streams before prompting in the REPL and the
3780 * bug fix: signal handling and triggering gc do not conflict
3781 directly anymore, in particular a high frequency sb-sprof does
3782 not prevent gc from running
3783 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3784 approximation for timezone and DST information between the
3785 universal time epoch and the smallest negative 32-bit time_t.
3786 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3787 year 1899 so long as the encoded time is non-negative.
3788 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3789 the correct answer for non-constant rotate amounts when performing
3790 an inline 32-bit rotation.
3792 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3793 there is only one thread in the session
3794 ** bug fix: memory leak for streams created in one thread and
3795 written to in another
3796 ** bug fix: lockup when compiled with gcc4
3797 ** bug fix: race that allows the gc to be triggered when gc is
3799 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3800 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3802 ** bug fix: finished threads are gc'ed properly
3803 * fixed some bugs revealed by Paul Dietz' test suite:
3804 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3805 has arguments with a different set of applicable methods from
3806 the orignal arguments.
3807 ** The type error thrown by MAP now has a correct expected-type
3809 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3810 name a compiled function.
3811 ** Three MISC tests where a large bignum was improperly coerced to
3812 a float that couldn't represent that bignum during type
3813 derivation were fixed.
3814 ** SUBTYPEP can now handle types involving the negation of a
3815 list-form FUNCTION type.
3816 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3817 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3818 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3820 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3821 * New feature: Experimental support for bivalent streams: streams
3822 opened with :element-type :default now allow character and binary
3823 (unsigned-byte 8) I/O
3824 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3825 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3827 * bug fix: no more highly sporadic "couldn't check whether ~S is
3828 readable" when reading a stream and an interrupt hits in the middle
3829 of a select system call
3830 * compiler better recognizes complex arrays (reported by Eduardo
3832 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3833 for variables on SBCL built with linkage-tables. (reported by Luis
3835 * various error reporting improvements.
3836 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3837 (Thanks to Thiemo Seufer)
3838 * bug fix: nested reader invokations work correctly
3839 * bug fix: it is possible to have simultaneous references to foreign
3840 code and foreign data with the same name.
3842 ** added x86-64 support
3843 ** incompatible change: the threading api now works with thread
3844 objects instead of thread ids
3845 ** bug fix: threads are protected from signals and interruption when
3846 starting up or going down
3847 ** bug fix: a race where an exiting thread could lose its stack to gc
3848 ** bug fix: don't halt on infinite error in threads if possible
3849 ** fixed numerous gc deadlocks introduced in the pthread merge
3850 ** bug fix: fixed thread safety issues in read and print
3851 ** bug fix: debugger doesn't hang on session lock if interrupted at
3852 an inappropriate moment
3853 ** bug fix: run-program is now thread safe(r)
3854 ** bug fix: inner with-recursive-lock no longer releases the mutex
3855 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3856 * fixed some bugs revealed by Paul Dietz' test suite:
3857 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3858 EXPECTED-TYPE slots filled.
3859 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3861 ** MAKE-CONDITION accepts classes as type-designators.
3862 ** COMPILE may never return NIL.
3863 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3864 range before calling Unix time functions
3866 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3867 * numerous signal handling fixes to increase stability
3868 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3869 * minor incompatible change: we now correctly canonize default
3870 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3871 as per the MOP, rather than the historical (INITARG INITFUNCTION
3872 INITFORM). (reported by Bruno Haible)
3873 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3874 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3875 for more information.
3876 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3877 pathname is a directory pathname.
3878 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3879 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3881 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3882 :METACLASS argument in addition to a class name. (reported by
3883 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3884 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3885 (reported by Bruno Haible; patch from Gerd Moellmann)
3886 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3888 * bug fix: more cleanups to the floating point exception handling on
3889 x86-64 (thanks to James Knight)
3890 * bug fix: the compiler does not try to constant fold calls of
3891 COERCE and BIT-* functions when they return freshly constructed
3892 objects. (reported by Nikodemus Siivola and Paul Dietz)
3893 * optimization: improved the MIPS versions of generic (in the
3894 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3895 * optimization: direct conversion of (unsigned-byte 32) to floats on
3896 the PowerPC platform.
3897 * optimization: structure instances with raw slots now use less
3898 memory, and probably show better memory locality. (thanks to
3900 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3901 are treated as requests for stack allocation on the x86-64,
3902 Alpha-32, PPC and SPARC platforms.
3903 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3904 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3905 (thanks to Tony Martinez)
3907 ** gcing a dead thread can no longer lead to lockups
3908 ** threads block signals until they are set up properly
3909 ** errno is no longer shared by threads
3910 ** interrupt-thread restores the eflags register on x86
3911 ** fixed some lockups due to gc/thread interaction
3912 * fixed some bugs revealed by Paul Dietz' test suite:
3913 ** invalid dotted lists no longer raise a read error when
3914 *READ-SUPPRESS* is T
3915 ** signal an error if a symbol that names a declaration is used
3916 as the name of a type, or vice versa
3917 ** allow using the (declare (typespec var*)) abbreviation for
3918 (declare (type typespec var*)) with all type specifiers
3919 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3920 ** always return NIL from PPRINT-POP when OBJECT is NIL
3921 ** don't signal errors when pretty-printing malformed LABELS,
3922 FLET or MACROLET forms
3923 ** declarations in a DOLIST body are also in scope for the
3925 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3927 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3930 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3931 * fixed cross-compiler leakages that prevented building a 32-bit
3932 target with a 64-bit host compiler.
3933 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3934 opened with :IF-EXISTS :OVERWRITE.
3935 * fixed bug 281: error for an invalid qualifier in a short-form method
3936 combination method is not signalled until the faulty method is called.
3937 * bug fix: iteration variable type inferrer failed to deal with open
3938 intervals. (reported by Alan Shields)
3939 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3940 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3941 or more runtime options were provided to the sbcl binary.
3942 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3943 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3944 * optimization: there's now a fast-path for fixnum arguments in the
3945 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3946 * optimization: the code generated on x86-64 is more compact thanks
3947 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3948 * bug fix: floating-point exception handling now partly works on
3949 x86-64. (Thanks to James Knight)
3950 * improvement to the MIPS backend from Thiemo Seufer: C-style
3951 64-bit long long arguments and return values to alien functions
3953 * fixed some bugs revealed by Paul Dietz' test suite:
3954 ** the type-error signalled from WARN has a filled-in DATUM slot.
3955 ** the type-error required when a stream is not associated with
3956 a file has the stream as its datum.
3957 ** type-errors on single-floats on x86-64 no longer have
3958 :INVALID-OBJECT as the datum
3959 ** the type-errors signalled for invalid function names now have
3960 a correct expected type
3961 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3962 for structures defined with a :TYPE. Documentation strings for
3963 typed structures are no longer immediately discarded
3964 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3965 broadcast streams and synonym streams. FILE-LENGTH now also works
3966 on broadcast streams.
3968 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3969 * incompatible change: the --noprogrammer option, deprecated since
3970 version 0.7.5, has been removed. Please use the equivalent
3971 --disable-debugger option instead.
3972 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3974 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3975 inoperational for a while now) has been completely removed.
3976 * null lexical environments are now printed as #<NULL-LEXENV>,
3977 significantly reducing the amount of clutter in typical backtraces.
3978 * documentation on weak pointers, finalization, and after GC hooks
3979 has been added to the manual.
3980 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3981 as other specialized array types, is much faster. SUBSEQ and
3982 COPY-SEQ on such arrays have also been sped up.
3983 * optimization: EQL is now more efficient when at least other argument
3984 is known to be of type (OR FIXNUM (NOT NUMBER)).
3985 * fixed bug: the runtime is now less vulnerable to changes in the
3986 size of the SBCL object on OS X, and virtual memory is reserved for
3987 all spaces that need to be at a fixed address.
3988 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3989 * fixed bug: finalizers and after GC hooks that cause consing are now
3991 * fixed bug: compiler error messages and summaries are now printed to
3992 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3993 * fixed inference of the upper bound of an iteration variable.
3994 (reported by Rajat Datta).
3995 * fixed bug 211e: calling local functions with duplicated constant
3996 keyword argument no longer causes a bogus style warning about an
3998 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3999 ftype declaration to be disregarded. (reported by Dave Roberts)
4000 * fixed bug 373: caused by erronous compilation of references to alien
4001 variables in the runtime on ppc/darwin.
4002 * fixed bug 376: CONJUGATE type deriver.
4003 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
4004 (reported by Baughn on #lisp)
4005 * a cross-compiler bug on non-x86 platforms has been identified and
4006 fixed. (thanks to Bruno Haible)
4007 * improvements to the MIPS runtime code for increased stability.
4008 (thanks to Thiemo Seufer)
4009 * increased the maximimum compact environment size to allow
4010 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
4011 * partial workaround for bug 135: don't name the function we're
4012 calling for hairy cases of EVAL, so as not to accumulate one environment
4013 entry per call to EVAL. (reported by Kevin Reid)
4014 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
4015 * optimization: type testing for non-vector arrays should be faster.
4016 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
4018 * bug fix: setting 31st element of a bit vector to zero did not work
4020 * bug fix: redefining a class definition which failed due to a
4021 previous accessor / function clash now works (but see BUGS entry
4022 #380 for more problems in this area). (thanks to Zach Beane)
4023 * the long form of DEFINE-METHOD-COMBINATION disables method group
4024 checking when given a single method group with pattern *. (thanks
4026 * on x86 compiler supports stack allocation of results of simple
4027 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
4028 * support for building and running on Mac OS X 10.4 "Tiger" has been added
4029 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
4030 * fixed some bugs related to Unicode integration:
4031 ** the restarts for recovering from input and output encoding
4032 errors only appear when there is in fact such an error to
4034 * fixed some bugs revealed by Paul Dietz' test suite:
4035 ** MISC.549 and similar: late transformation of unsafe type
4036 assertions into derived types caused unexpected code
4038 ** SCALE-FLOAT type deriver is less wrong.
4039 ** type derivers for EXP, LOG and similar functions compute result
4040 types for complex arguments better.
4041 ** (MISC.563) CONJUGATE type deriver works for very restricted
4043 ** out-of-line type testers for character strings are available.
4044 ** EQUAL compiler transform understands specialness of objects
4046 ** accessing double-floats stored on the stack now works on x86-64.
4047 ** debugger internals could sometimes create invalid lispobjs,
4048 resulting in GC crashes.
4049 ** MISC.548: type check weakening can convert required type into
4051 ** initialization forms for bindings are not in scope of free special
4054 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
4055 * incompatible change: thread support for non-NPTL systems has
4056 been removed - locking is buggy and unreliable. A threaded
4057 SBCL build will now warn at startup and refuse to create
4058 new threads, unless futex support is detected in the kernel
4059 * incompatible change: the top level REPL now has only an ABORT
4060 restart associated with it, not TOPLEVEL and ABORT as it used to.
4061 TOP and TOPLEVEL are now available as debugger commands for
4062 returning to the top level.
4063 * incompatible change: forms evaluated in the REPL now use the
4064 global optimization policy.
4065 * incompatible change: user- and system-initialization files are
4066 no longer processed with LOAD, but by READ and EVAL; hence the
4067 global optimization policy, startup package, readtable, etc,
4069 * The .fasl file format number has been incremented because of
4070 various incompatible changes.
4071 * internal entry point details and argument counts no longer appear
4072 in backtraces unless explicitly requested by setting
4073 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
4074 * built-in and standard functions no longer have names like "top
4075 level local call to FOO".
4076 * fixed bug 32: functions defined in non-null lexical environments
4077 now have more legible printed representation
4078 * fixed bug 33: functions defined in non-null lexical environemnts
4079 are now more amenable to inspection by INSPECT.
4080 * workaround for bug 354: XEPs no longer appear in backtraces unless
4081 explicitly requested.
4082 * fixed bug: receiving the signal which results from attempting to
4083 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
4084 SIGBUS on other *BSDs) on architectures where the C stack is also
4085 the Lisp stack (x86 and x86-64) from foreign code no longer leads
4086 to debugger confusion or wild instability. (reported by Cheuksan
4088 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
4089 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
4090 (reported by Lutz Euler)
4091 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
4092 compiled code. (reported by Paul Dietz)
4093 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
4094 specialized parameter to a method to something that is not TYPEP
4095 the specializer is now possible.
4096 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
4097 face of package deletion.
4098 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
4099 pathname. (reported by David Tolpin on c.l.l)
4100 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
4101 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
4102 STRING-STREAM and FILE-STREAM, respectively.
4103 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
4104 than previously; in addition, its test suite is now run on build.
4105 (thanks to Luke Gorrie)
4106 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
4107 * optimization: added a immediate representation for single-floats
4109 * fixed some bugs revealed by Paul Dietz' test suite:
4110 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
4111 ** attempting to create a package with a colliding nickname causes
4112 correctable errors to be signalled.
4113 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
4114 ** several x86-64 backend bugs related to sign-extension of immediate
4117 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
4118 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
4119 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
4121 * fixed loading of multiply forward-referenced layouts.
4122 (thanks to Cheuksan Wang)
4123 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
4124 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
4125 (see COMPILE-FILE documentation for details of :PRINT option)
4126 * fixed bugs 19 and 317: fixed-format floating point printing is
4127 more accurate. This also fixes a bug reported by Adam Warner
4128 related to the ~@F format directive.
4129 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
4131 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
4132 dispatch table if the from-char is a dispatch macro character.
4133 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
4134 by the wordsize no longer ignore the last word. (reported by Lutz
4136 * fixed bug in type checking of dynamic-extent variables. (reported
4138 * optimization: sequence traversal functions use their freedom to
4139 coerce function designators to functions.
4140 * optimization: code with many calls to CLOS methods specialized on
4141 CLOS classes has had redundant type checks removed.
4142 * optimization: added declarations to speed up operations that access
4143 the internal character database (for example STRING-UPCASE)
4144 * optimization: comparison operations between floats and sufficiently small
4145 fixnums no longer create extra rationals
4146 * fixed some bugs related to Unicode integration:
4147 ** portions of multibyte characters at the end of buffers for
4148 character-based file input are correctly transferred to the
4149 start of the buffer at the next read.
4150 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
4151 passing it through to OPEN.
4152 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
4153 argument given to internal calls to OPEN.
4154 ** the built-in comment readers (introduced by character sequences
4155 ";" and "#|") are more forgiving to encoding errors; they will
4156 STYLE-WARN and then attempt to resync the stream at a character
4157 boundary. (thanks to Teemu Kalvas)
4158 * fixed some bugs in the x86-64 port:
4159 ** Negative short int return values from c-calls are sign-extended
4161 ** The stack is aligned to 16-bytes for c-calls, as required by
4162 the ABI. (thanks to Cheuksan Wang)
4163 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
4164 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
4165 for enums. (thanks to Vincent Arkesteijn)
4166 ** Multiple small optimizations and bugfixes for floating point
4168 * fixed some bugs revealed by Paul Dietz' test suite:
4169 ** Space, Tab, Linefeed, Return and Page have the invalid
4170 secondary constituent character trait.
4171 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
4173 ** WITH-INPUT-FROM-STRING should only update the index place on
4175 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
4176 works more reliably.
4177 ** Bit-array operations (BIT-AND and similar) worked incorrectly
4178 with one-dimensional arrays with fill pointers.
4179 ** TYPE-OF failed on a complex with an integer realpart and a
4181 ** compiler failure during type inference for the code of form
4182 (IF (EQL X (THE ...)) ...) (MISC.535).
4184 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
4185 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
4186 platform. The port supports 61-bit fixnums, large memory spaces
4187 and reloading shared object files.
4188 * enhancement: saving cores with foreign code loaded is now
4189 supported on ppc/Darwin in addition to the previously supported
4191 * enhancement: the statistical profiler now walks deeper into the
4192 call stack for more meaningful call-graphs and accrued time
4193 reports (x86/x86-64 only). It also now reports time spent in
4195 * enhancement: it is now possible to trace most individual methods
4196 of a generic function in addition to tracing the generic function
4198 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
4200 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
4201 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
4202 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
4203 produces an error. (thanks to Vincent Arkesteijn)
4204 * bug fix: NAMESTRING on pathnames with :WILD components in their
4205 directories works correctly. (thanks to Artem V. Andreev)
4206 * fixed bug 125: compiler preserves identity of closures. (reported
4208 * bug fixed: functions with &REST arguments sometimes failed with
4209 "Undefined function" when compiled with (DEBUG 3). (reported by
4211 * bug fix: overflow during compiling of setting element of a bit
4212 vector with constant index and value. (reported by Timmy Douglas)
4213 * build fix: fixed the dependence on *LOAD-PATHNAME* and
4214 *COMPILE-FILE-PATHNAME* being absolute pathnames.
4215 * on x86 compiler partially supports stack allocation of dynamic-extent
4217 * GO and RETURN-FROM do not check the extent of their exit points
4218 when compiled with SAFETY 0.
4219 * fixed some bugs related to Unicode integration:
4220 ** encoding and decoding errors are now much more robustly
4221 handled; it should now be possible to recover even from invalid
4222 input or output to the terminal. (thanks to Teemu Kalvas)
4223 ** provided a first cut at implementing STRING-TO-OCTETS and
4224 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
4225 ** altered the SB-MD5 contributed module slightly, changing the
4226 interface just enough for it to be supportable for builds where
4227 lisp characters are not eight bits.
4228 * fixed some bugs revealed by Paul Dietz' test suite:
4229 ** the FORMATTER-generated functions for ~V[ conditionals require
4230 the correct number of arguments.
4231 ** READ-FROM-STRING returns the mandated second value when applied
4232 to displaced strings.
4233 ** the #\Rubout and #\Backspace characters are treated as invalid
4234 constituent characters by the tokenizer.
4236 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
4237 * new feature: reloading changed shared object files with
4238 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4239 * new feature: references to foreign variables and functions
4240 can now be compiled and loaded before the corresponding shared
4241 object file is loaded, as long as the foreign definitions are
4242 available at runtime.
4243 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
4244 supported. (thanks to Dan Debertin)
4245 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
4246 just keywords. (thanks to Vincent Arkesteijn)
4247 * fixed bug #331: structure-class instances corresponding to
4248 DEFSTRUCT forms are now created eagerly.
4249 * fixed bug #345: backtraces from calls to undefined functions work
4250 on x86 as well. Related bug #61 is now also partially fixed on x86
4251 (backtraces from throws to unknown catch tags.)
4252 * bug fix: lambda-list parsing is now stricter vrt. order and number
4253 of lambda-list keywords.
4254 * bug fix: as specified by AMOP, an error is signalled if a
4255 class-option appears multiple times in a DEFCLASS form. (reported
4257 * bug fix: RANDOM can be compiled when the compiler derives the type
4258 of its numeric argument as a disjoint set of small integers.
4259 (reported by Paul Dietz)
4260 * bug fix: starting a core saved with shared objects loaded when
4261 those objects are not available no longer causes threaded SBCL to
4262 hang. (reported by Sean Ross)
4263 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
4265 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
4266 argument, which must always be NIL. (reported by Kalle Niemitalo)
4267 * bug fix: printing 1.0d+23 no longer results in an error.
4268 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
4269 * bug fix: structure slot setters preserve evaluation order. (thanks
4271 * fixed some bugs related to Unicode integration:
4272 ** RUN-PROGRAM can allow its child to take input from a Lisp
4273 stream. (reported by Stefan Scholl)
4274 ** ASDF-INSTALL successfully downloads .tar.gz files in all
4275 locales. (reported by Ken Causey)
4276 * fixed some bugs revealed by Paul Dietz' test suite:
4277 ** INCF, DECF and REMF evaluate their place form as specified in
4279 ** FORMATTER expands ~{ ~} iteration directives with V or #
4280 parameters correctly.
4281 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4282 consequent uses no arguments correctly.
4283 ** the system has a partial understanding of the (COMPLEX RATIO)
4285 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4288 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4289 * new feature: a build-time option (controlled by the :SB-UNICODE
4290 keyword feature, enabled by default) for building the system with
4291 support for the entire 21-bit character space defined by the
4293 * new feature: the system now has rudimentary external-format
4294 support; the primary user-visible change at this time is that
4295 characters with the high bit set (such as lower-case-e-acute) will
4296 print correctly to a terminal in a UTF-8 environment.
4297 * minor incompatible change: BASE-CHAR no longer names a class;
4298 however, CHARACTER continues to do so, as required by ANSI.
4299 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4300 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4301 has been moved to the SB-EXT package (temporarily re-exported from
4303 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4304 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4306 * fixed bug #351: better error-handlind and reporting for malformed
4308 * fixed bug #350: bignum-printing is now more memory-efficient,
4309 allowing printing of very large bignums, eg. (expt 2 10000000).
4310 (reported by Bruno Haible)
4311 * fixed bug #302: better primitive-type selection for intersection
4313 * fixed bug #308: non-graphic characters now all have names, as
4314 required. (reported by Bruno Haible)
4315 * bug fix: redefining a class with different superclasses now correctly
4316 removes it from the direct-subclasses of its previous superclasses.
4317 (reported by David Morse)
4318 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4319 new value now works. (reported by Bruno Haible)
4320 * bug fix: correct canonicalization of multiple non-standard slot
4321 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4322 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4323 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4324 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4325 now exists, an signals an error.
4326 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4327 during macroexpansion for non-iteration variables as well. (reported
4328 by Bruno Haible for CMUCL)
4329 * bug fix: Cyclic structures and unprintable objects in compiler
4330 messages no longer cause errors. (reported by Bruno Haible)
4331 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4332 and READ-FROM-STRING all now return a primary value of NIL if
4333 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4334 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4335 (reported by Bruno Haible for CMUCL)
4336 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4337 do not designate a condition. (reported by Bruno Haible for
4339 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4340 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4341 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4342 permitting resolution in favour of any of the conflicting symbols.
4343 (reported by Bruno Haible for CMUCL)
4344 * bug fix: EQUAL compiler optimizations is less aggressive on
4345 strings which can potentially compare true despite having distinct
4346 specialized array element types.
4347 * bug fix: unit enumerations can be defined without dividing by
4348 zero. (thanks to Vincent Arkesteijn)
4349 * FORMAT compile-time argument count checking has been enhanced.
4350 (report from Bruno Haible for CMUCL)
4351 * a partial workaround for the bug 262: the compiler does not try to
4352 inline-expand a local function doing RETURN-FROM from a deleted
4353 BLOCK. (thanks to Peter Denno for the bug report and to David
4354 Wragg for the simple test case)
4355 * fixed some bugs revealed by Paul Dietz' test suite:
4356 ** RENAME-PACKAGE allows all package designators as new package
4358 ** constraint propagation and lambda variable substitution are
4359 more cautious in dealing with partially deleted code.
4360 ** compiler sometimes lost reoptimization passes.
4361 ** CERROR, given a condition as condition designator, passes its
4362 remaining arguments to the continue format control without
4364 ** Case-altering FORMAT directives work correctly on non-ASCII
4366 ** The REAL type specifier handles bounds outside the floating
4367 point ranges without signalling FLOATING-POINT-OVERFLOW.
4368 ** Functions with IR1-transformations can create intercomponent
4369 references to global functions.
4370 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4372 ** FORMAT ~R treats a nil value for its first parameter correctly.
4374 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4375 * enhancement: saving cores with foreign code loaded is now
4376 supported on x86/NetBSD and sparc/Linux in addition to the previously
4377 supported platforms.
4378 * bug fix: on some platforms repeated installations caused multiple
4379 copies of HTML documentation to be installed -- should not happen
4380 any more. (reported by Stefan Scholl)
4381 * bug fix: parsing self-recursive alien record types multiple times
4382 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4383 original patch by Helmut Eller for CMUCL)
4384 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4385 (thanks to Richard Kreuter)
4386 * bug fix: defining classes whose accessors are methods on existing
4387 generic functions in other (locked) packages no longer signals
4388 bogus package lock violations. (reported by François-René Rideau)
4389 * bug fix: special variables as DEFMETHOD parameters no longer have
4390 associated bogus type declarations. (reported by David Wragg and
4392 * bug fix: read-write consistency on streams of element-type
4393 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4394 * bug fix: redefiniton of the only method of a generic function with
4395 no DEFGENERIC no longer emits a full WARNING. In addition,
4396 redefinition of generic functions with no DEFGENERIC to an
4397 incompatible lambda list now signals an error. (thanks to Zach
4399 * bug fix: DEFGENERIC now works even when there's a function of the
4400 same name in an enclosing lexical environment. (thanks to Zach
4402 * fixed compiler failure, caused by instrumenting code during
4403 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4404 * optimization: added loop analysis and improved register allocation
4405 * fixed some bugs revealed by Paul Dietz' test suite:
4406 ** POSITION on displaced vectors with non-zero displacement
4407 returns the right answer.
4408 ** (SIMPLE-STRING) is a valid type specifier for sequence
4410 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4412 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4413 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4415 ** The justification version of the FORMAT ~< directive treats
4416 non-zero minpad parameter correctly.
4418 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4419 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4420 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4421 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4422 the supported interface.
4423 * new feature: Single-stepping of code compiled with DEBUG 2 or
4424 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4425 * new feature: saving cores with foreign code loaded is now
4426 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4427 Timothy Moore's work for CMUCL)
4428 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4429 parameters to * instead of NIL if no initform is supplied.
4430 (reported by Johan Bockgaard)
4431 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4432 correctly when FUNCALL appears as the car of the form. Note:
4433 despite this FUNCALL forms are not currently subject to
4434 compiler-macro expansion. (port of Raymond Toy's fix for the
4435 same from CMUCL, reported by Johan Bockgaard)
4436 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4437 (thanks for Teemu Kalvas)
4438 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4439 case instead of terminating the iteration (thanks for Julian
4440 Squires, Sean Champ and Raymond Toy)
4441 * bug fix: incorrect expansion of defgeneric that caused a style
4442 warning. (thanks for Zach Beane)
4443 * bug fix: slot accessor effective method computation works properly
4444 for classes with multiple non-standard applicable methods on
4445 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4446 * on x86 compiler supports stack allocation of results of LIST and
4447 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4448 CMUCL implementation by Gerd Moellmann)
4449 * fixed some bugs revealed by Paul Dietz' test suite:
4450 ** FORMAT strings with both the ~<~:;~> form of the justification
4451 directive and pretty-printing directives cause an error.
4453 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4454 * incompatible change: the internal functions
4455 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4456 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4457 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4458 instead of the old functions.
4459 * new feature: on platforms where "dladdr" is available foreign
4460 function names now appear in backtraces. (based on Helmut Eller's
4462 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4463 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4465 * documentation: ASDF manual is now distributed with SBCL.
4466 * bug fix: SBCL can now load its contributed modules with REQUIRE
4467 even if the system-provided entries have been removed from
4468 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4470 * bug fix: backtraces involving undefined functions or assembly
4471 routines are more informative. (thanks to Brian Downing)
4472 * bug fix: mutually referent alien structures now work correctly.
4473 (reported by Rick Taube)
4474 * bug fix: structures defined by WITH-ALIEN can be referred to
4475 within other definitions in the same WITH-ALIEN.
4476 * bug fix: division operators (MOD, TRUNCATE and the like) with
4477 constant zero divisors and integer dividends no longer generate
4479 * bug fix: provide default methods for INPUT-STREAM-P and
4480 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4481 * bug fix: improve the detection and resolution of MOP metacycles
4482 (where effective method computation depends on the generic function
4483 having its effective method computed). (reported by Bruno Haible)
4484 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4485 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4486 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4487 * bug fix: pathnames with relative directory components can be
4488 represented relative to default pathnames.
4489 * optimization: in taking the GCD of bignums, reduce the two bignums
4490 to approximately the same size (using Euclid's algorithm) before
4491 applying the more sophisticated binary GCD. (thanks to Juho
4493 * optimization: COUNT on bitvectors now operates word-at-a-time.
4494 * optimization: ASH with a positive, but not necessarily constant,
4495 (leftwards) shift, when in a modular context, is compiled to a
4497 * fixed some bugs revealed by Paul Dietz' test suite:
4498 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4499 if the corresponding argument is NIL.
4500 ** FORMAT directives accepting a minpad parameter treat negative
4502 ** literal commas as character parameters to FORMAT directives are
4504 ** literal spaces directly after ~<Newline> directives within a
4505 format-logical-block (~:< ~@:>) do not induce :FILL-style
4506 conditional newlines.
4507 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4508 as specified: it no longer includes conditional newlines).
4509 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4511 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4512 :PER-LINE-PREFIX argument does not evaluate to a string.
4514 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4515 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4516 the manual for details; for now, package locks can be disabled by
4517 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4518 if no major problems are found then it is likely that they will be
4519 compiled in unconditionally.
4520 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4521 unsupported operators on all platforms. To load a shared library
4522 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4523 object file, link it into a shared library outside of SBCL and
4524 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4526 * bug workaround: ROOM T and the GC were not working together
4527 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4528 reporting facility aren't preserved. That reporting has been
4529 disabled, so now until and unless someone figures out how to make it
4530 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
4531 * minor incompatible change: as threatened around sbcl-0.8.0, the
4532 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
4533 The symbols are also exported from SB-PCL for backwards
4534 compatibility, but more so than before SB-PCL should be treated as
4535 an implementation-internal package.
4536 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
4538 * the SB-SPROF contrib now works on (most) non-x86 architectures.
4539 It is known as of this release not to work on the Alpha, however.
4540 * fixed bug #167: errors signalled due to illegal syntax in method
4541 bodies are now more legible.
4542 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4543 designators and can hence be used with TYPEP.
4544 * fixed bug #333: CHECK-TYPE now ensures that the type error
4545 signalled, if any, has the right object to be accessed by
4546 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4547 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4548 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4550 * fixed bug #334: programmatic addition of slots using specialized
4551 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4552 and :ALLOCATION :CLASS slots.
4553 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4554 float exponents. (rereported by Peter Seibel)
4555 * fixed a bug: #\Space (and other whitespace characters) are no
4556 longer considered to be macro characters in standard syntax by
4557 GET-MACRO-CHARACTER.
4558 * fixed bug: initialization of condition class metaobjects no longer
4559 causes an instance of the condition to be created. (reported by
4561 * fixed bug: it is now possible to have slots such that
4562 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4563 description is neither :INSTANCE nor :CLASS.
4564 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4565 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4566 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4567 non-standard SLOT-DEFINITION-ALLOCATION values.
4568 * fixed bugs: various race conditions handling exiting threads.
4569 CL-PPCRE's thread torture test now passes.
4570 * fixed arguably-a-bug: GC time proportional to number of threads in
4571 system even when most of them are idle
4572 * optimization: improved performance of BIT and SBIT on bit-vectors.
4573 * .fasl file incompatibility: The fasl file version number has
4574 been incremented because of changes associated with package locks.
4576 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4577 * minor incompatible change: the system no longer provides
4578 optimization hints (conditions which are TYPEP
4579 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4580 mode; these hints are still emitted when higher SPEED optimization
4582 * new contrib module: a sampling profiler (profiling by statistical
4583 sampling, rather than by instrumenting functions) is available as
4584 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4585 * the behaviour of the standard function ED is now customizeable by
4586 third parties through a hook variable: see ED's documentation
4587 string for information on the protocol.
4588 * the compiler no longer emits efficiency notes for (FUNCALL X)
4589 when the type of X is uncertain under default optimization
4591 * fixed bug 276: mutating a binding of a specialized parameter to a
4592 method to something that is not TYPEP the specializer is now
4594 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4595 exhibit the required behaviour on the x86 platform. (thanks to
4596 Peter van Eynde, Eric Marsden and Bruno Haible)
4597 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4598 even for difficult arguments. (reported by Peter Graves)
4599 * fixed bug 141a: the backquote printer now descends quoted
4601 * fixed another bug in backquote printing: no more destructive
4602 modification of the form's list structure. (reported by Brian
4604 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4605 move between its address being taken and the call to
4606 interrupt_thread, fixing a crashing race condition.
4607 * the SB-POSIX contrib implementation has been adjusted so that it
4608 no longer exhibits ridiculously poor performance when constructing
4609 instances corresponding to C structs.
4611 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4612 * minor incompatible change: the sb-grovel contrib now treats C
4613 structures as alien (in the sense of SB-ALIEN) objects rather than
4614 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4615 has implications for memory management of client code
4616 (sb-grovel-returned objects must now be manually managed) and for
4617 type safety (alien objects now have full types).
4618 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4619 used to control emission of compiler diagnostics, rather than the
4620 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4621 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4622 quality should be considered deprecated.
4623 * install.sh now installs the user manual as well
4624 * (not quite a new documentable feature, but worth considering in
4625 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4626 beginnings of a semantically meaningful condition hierarchy is
4627 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4629 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4630 designator as the defaults argument.
4631 * fixed bug: Displaced arrays whose displaced-to array has become
4632 too small now cause ARRAY-DIMENSION to signal an error, providing
4633 for safer bounds-checking. (reported by Bruno Haible)
4634 * fixed bug: DEFCLASS slot definitions with identical :READER and
4635 :WRITER names now signal a reasonable error. (reported by Thomas
4637 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4639 * fixed bug: Invalid slot specification errors now print correctly.
4640 (thanks to Zach Beane)
4641 * fixed bug 320: Shared to local slot value transfers in class
4642 redefinitions now happen corrently from superclasses as
4643 well. (reported by Bruno Haible)
4644 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4646 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4647 improper lists correctly. (reported by Bruno Haible)
4648 * fixed bug 313: source-transform for <fun-name> was erroneously
4649 applied to a call of a value of a variable with name <fun-name>.
4650 (reported by Antonio Menezes Leitao)
4651 * fixed bug 307: The obsolete instance protocol ensures that
4652 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4653 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4654 remove dead unknown-values globs from the middle of the stack.
4655 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4656 easier to resume long computations after using *BREAK-ON-SIGNALS*
4657 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4658 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4659 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4660 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4661 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4662 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4664 * fixed a (fairly theoretical) bug in string printing: if
4665 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4666 does not have array-element-type equal to the most general string
4668 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4669 function name. (thanks to Nikodemus Siivola)
4670 * fixed bug: compile-time format string checker failed on
4671 non-closed ~{. (reported by Thomas F Burdick)
4672 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4673 don't warn on legal loop code involving more than one aggregate
4674 boolean. (thanks to Nikodemus Siivola)
4675 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4676 in keyword position to MAKE-PACKAGE was not being reported as
4678 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4679 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4681 * fixed bugs 280 and 312: the checking for multiple definitions in a
4682 file is less likely to become confused by uses of inline
4684 * fixed bug: the #S reader macro performs the keyword coercion
4685 specified for slot names. (reported by Kalle Niemitalo)
4686 * fixed bug: lambda lists may contain symbols whose names start with
4687 & but are not lambda-list-keywords; their occurrence triggers a
4689 * fixed bug 321: define-method-combination argument lambda lists do
4690 not cause invalid code to be generated when &optional or &aux
4691 variables have default values. (reported by Bruno Haible)
4692 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4693 have CLOS classes; this appears also to have fixed reported
4694 instability in stack exhaustion detection.
4695 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4696 MUFFLE-WARNING when no associated restart is present is now
4698 * optimization: rearranged the expansion of various defining macros
4699 so that each expands into only one top-level form in a
4700 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4702 * optimization: used a previously little-used slot in symbols to
4703 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4705 * fixed some bugs revealed by Paul Dietz' test suite:
4706 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4708 ** Fixed an optimization bug related to inheritance of initforms
4709 from local to shared slots.
4710 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4711 ** CAST optimizer forgot to flush argument derived type.
4712 ** print/read consistency on floats is now orders of magnitude
4713 more likely. (thanks also to Bruno Haible for a similar report
4715 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4716 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4717 for objects of type REAL. Make it so.
4718 ** SXHASH is specified (infelicitously) to respect similarity,
4719 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4720 it so. (thanks to Markus Ziegler)
4721 ** on the Alpha, the compiler succeeds in compiling functions
4722 returning a known number of arguments greater than 63.
4723 ** fixed handling of invalid NIL arguments in keyword position
4725 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4727 ** provided a readably-printable representation for RANDOM-STATE
4729 ** ensured that pathnames, where they have a namestring, always
4730 print using #P"..." syntax.
4732 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4733 * Support for the forthcoming 2.0 version of the NetBSD kernel
4734 running on x86 hardware has been added. (thanks to Perry
4735 E. Metzger most immediately, and others for their past work)
4736 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4737 current release version; SBCL's OpenBSD support had been broken
4738 since about the time of OpenBSD's switch to ELF binary format.)
4739 * [placeholder for DX summary]
4740 ** user code with &REST lists declared dynamic-extent, under high
4741 speed or space and low safety and debug optimization policy.
4742 * The manual has been converted to Texinfo format and the debugger
4743 chapter from the cmucl manual has been added.
4744 * A facility has been added to extract documentation strings from
4745 sbcl and store them as Texinfo-formatted snippets for inclusion in
4746 the manual (via Texinfo's @include directive)
4747 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4748 the test case to Dave Roberts)
4749 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4750 pointers. (reported by Sean Ross)
4751 * bug fix: PROFILE output is printed nicely even for large numerical
4752 values. (thanks to Zach Beane)
4753 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4754 greater than 32 handle EOF correctly.
4755 * bug fix: on X86 an immediate argument of the IMUL instruction is
4756 correctly printed in disassembly. (thanks to Lutz Euler)
4757 * bug fix: class slots in redefined classes preserve their old
4758 values. (thanks to Bruno Haible and Nikodemus Siivola)
4759 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4760 succeeds. (reported by Marco Baringer)
4761 * fixed some bugs revealed by Paul Dietz' test suite:
4762 ** READ-SEQUENCE now works on ECHO-STREAMs.
4763 ** RATIONALIZE works more according to its specification. (thanks
4766 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4767 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4768 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4769 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4770 should matter to you only if you rebind the printer control
4771 variables and then find you want different bindings in the
4772 debugger than in the ordinary execution of your program.)
4773 * The runtime build system has been tweaked to support building
4774 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4775 assembler and linker. (thanks to Nikodemus Siivola)
4776 * Unbound, undefined, undeclared variables now trigger full
4777 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4778 more often programmer error than deliberate exploitation of undefined
4780 * optimization: the hash algorithm for strings has changed to one
4781 that is less vulnerable to spurious collisions. (thanks to Juho
4783 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4784 needless bounds checking. (thanks to Juho Snellman)
4785 * optimization: implemented multiplication as a modular
4786 (UNSIGNED-BYTE 32) operation on the PPC backend.
4787 * fixed some bugs revealed by Paul Dietz' test suite:
4788 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4790 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4791 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4792 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4794 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4796 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4798 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4799 their output stream on EOF from read.
4800 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4801 have been read to end-of-file.
4802 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4804 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4805 description of determination of which consecutive characters
4807 ** Printing the "Space" character with escaping on now yields "#\\ ",
4808 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4809 ** Reading floating-point numbers with *READ-BASE* set to a number
4810 less than 10 works correctly.
4811 ** Reading floating-point numbers with *READ-BASE* set to a number
4812 more than 10 works correctly.
4813 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4814 the readtable currently in effect.
4816 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4817 * minor incompatible change: parsing of namestrings on a physical
4818 (Unix) host has changed; numbers after the final #\. in a
4819 namestring are no longer interpreted as a version field. This is
4820 intented to be largely invisible to the user, except that the
4821 meaning of the namestring "*.*.*" has changed: it now refers to a
4822 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4823 should usually be replaced by
4824 (make-pathname :name :wild :type :wild :version :wild)
4825 with the added benefit that this is more likely to be portable.
4826 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4827 option to OPEN now signals an error if the file being opened
4828 exists; this may have an impact on existing code.
4829 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4830 signals received, on the PowerPC platforms (both Linux and
4831 Darwin). (thanks to Pierre Mai for pointing out the location of
4833 * several fixes on OS X: The system now builds and runs cleanly on
4834 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4835 (thanks to Brian Mastenbrook)
4836 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4837 second-resolution: integer multiples of 1/3600 between -24 and 24.
4838 (thanks to Vincent Arkesteijn)
4839 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4840 type when called with 1 argument; PEEK-CHAR checked type of
4841 PEEK-TYPE only after having read first character from a
4842 stream. (reported by Peter Graves)
4843 * bug fix: the garbage collector now has much better locality
4844 behaviour, and in particular no longer treats all memory as being
4845 exhausted when many small objects point to each other in a deeply
4847 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4848 recognized as being TYPEP their class.
4849 * bug fix: the PUSHNEW documentation string has been corrected.
4850 (thanks to Vincent Arkesteijn)
4851 * bug fix: defaulting of the value for the last of an atypically
4852 large number of multiple values being bound was not being
4853 performed correctly on the Alpha or PPC platforms
4854 * optimization: implemented multiplication as a modular
4855 (UNSIGNED-BYTE 32) operation on the x86 backend.
4856 * optimization: SEARCH on simple-base-strings can now be open-coded.
4857 (see also contrib/compiler-extras.lisp for inspiration for
4858 teaching the compiler about the Boyer-Moore algorithm).
4859 * value, returned by MAX (and MIN) called with several EQUALP, but
4860 not EQL, arguments now does not depend on compiler settings.
4861 * fixed some bugs revealed by Paul Dietz' test suite:
4862 ** in stack analysis liveness information is propagated from
4863 non-local entry points.
4864 ** pathwise CAST removing failed when the CAST node did not start
4866 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4867 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4869 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4870 host is already defined.
4871 ** RENAME-FILE works on streams instead of signalling an internal
4873 ** PEEK-CHAR uses the current readtable when determining whether
4874 or not a character is whitespace.
4875 ** MERGE-PATHNAMES handles the case when the pathname does not
4876 specify a name while the default-pathname specifies a version.
4877 ** Pathnames now stand a better chance of respecting print/read
4879 ** Attempting to use standardized file system operators with a
4880 pathname with invalid :DIRECTORY components signals a
4882 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4884 ** DIRECTORY on logical pathnames is more correct.
4885 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4886 signal a TYPE-ERROR if their argument is not a stream.
4887 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4888 designator argument does not designate a stream.
4889 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4890 examining the synonym.
4891 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4893 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4894 element-type larger than ([UN]SIGNED-BYTE 32).
4896 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4897 * When built with the :SB-FUTEX feature, threaded builds now take
4898 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4899 for faster/more reliable mutex and condition variable support.
4900 * Incompatible change (but one you probably shouldn't have been using
4901 anyway): the interface and code for arbitrating between multiple
4902 threads in the same user session has been redesigned.
4903 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4904 error when called without an explicit environment argument.
4905 (thanks to Nikodemus Siivola)
4906 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4907 confused about their position. (thanks to Adam Warner and Gerd
4909 * bug fix: Pretty printing backquoted forms with unquotations in the
4910 argument list position of various code constructs such as LAMBDA
4911 now works correctly. (reported by Paul Dietz)
4912 * bug fix: Pretty printing unquotations no longer loses all
4913 stream position information.
4914 * optimization: performance of string output streams is now less
4915 poor for multiple small sequence writes.
4916 * optimization: performance of CSUBTYPEP in the presence of complex
4917 expressions involving CONS and NOT many times has been improved.
4918 (reported by Paul Dietz)
4919 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4921 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4922 streams for the REPL, for the debugger, and so on. (thanks to
4924 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4925 * fixed some bugs revealed by Paul Dietz' test suite:
4926 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4927 is ignored if it is too small, rather than propagating through
4928 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4929 ** extremely complex negations of CONS types were not being
4930 sufficiently canonicalized, leading to inconsistencies in
4932 ** VALUES tranformer lost derived type.
4934 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4935 * fixed a bootstrapping bug: the build process no longer assumes
4936 that the various BOOLE-related constants have the same value in
4937 host and target lisps. (noted by Paul Dietz' test suite on an
4938 SBCL binary built from CLISP)
4939 * The system can now be dynamically linked on the MIPS platform,
4940 which enables dynamic loading of foreign code from Lisp. (thanks
4941 to Ralf Baechle for discussions on the MIPS ABI)
4942 * The system now records debugging information for its own source
4943 files in a filesystem-position-independent manner, relative to
4944 the "SYS" logical host.
4945 * fixed a compiler bug: MV-LET convertion did not check references
4946 to the "max args" entry point. (reported by Brian Downing)
4947 * tweaked disassembly notes to be less confident about proclaiming
4948 some instruction as an LRA. (thanks to Brian Downing)
4949 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4950 now each have their own history, command character, and other
4951 characteristics. (thanks to David Lichteblau)
4952 * fixed some bugs revealed by Paul Dietz' test suite:
4953 ** compiler failure in compiling LOGAND expressions including a
4955 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4956 shift greater than 32.
4957 ** FLUSH-DEST did not mark blocks for type check regeneration.
4958 ** HANDLER-CASE failed to accept declarations in handler clauses
4959 in some circumstances.
4961 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4962 * New code in contrib/sb-introspect (still probably not entirely
4963 stable yet) provides some support for smart Lisp development
4964 environments like SLIME.
4965 * The conditions signalled for errors occurring when loading .fasl
4966 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4967 in a way which should help ASDF recover gracefully.
4968 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4969 stuff has been cleaned up. If you code contrib/ stuff, this might
4970 affect you, and you can look at contrib/README, contrib/STANDARDS,
4971 and/or the 0.8.4.27 diff to check.
4972 * In full calls the compiler now does not generate checks for declared
4973 argument types for all arguments.
4974 * various threading fixes
4975 ** and some experimental patches which didn't make it into
4976 the main tree for this release, but which are shipped in
4977 contrib/experimental-thread.patch as a possible fix for some
4978 failures (deadlock, spinning...) in GC-intensive multithreaded
4980 * fixed PPC build problem (source code incompatibility of different
4981 library versions): added offsetof() hackery which attempts to divine
4982 where glibc maintainers put uc_mcontext today
4983 * fixed bug 282: compiler does not trust type assertions while passing
4984 arguments to a full call.
4985 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4986 &OPTIONAL VALUES type parameter.
4987 * fix bug 214: algorithm for noting rejected templates is now more
4988 similar to that of template seletion. (also reported by rydis on
4990 * fixed bug 141b: printing backquoted information readably and prettily
4991 inserts a space where necessary.
4992 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4993 (CHARACTER 10) are now reported as errors, rather than propagated
4994 as unknown types. (reported by piso on #lisp)
4995 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4996 with values NIL and :ERROR. (thanks to Milan Zamazal)
4997 * fixed bug 191c: CLOS now does proper keyword argument checking as
4998 described in CLHS 7.6.5 and 7.6.5.1.
4999 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
5000 longer raise an error; further, using a list as a for-as-arithmetic
5001 counter now raises a meaningful error.
5002 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
5003 now understood by sequence creation functions such as MAKE-SEQUENCE
5005 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
5006 a STRING-INPUT-STREAM.
5007 * compiler enhancement: SIGNUM is now better able to derive the type
5009 * type declarations inside WITH-SLOTS are checked. (reported by
5011 * fixed some bugs revealed by Paul Dietz' test suite:
5012 ** incorrect optimization of TRUNCATE for a positive first
5013 argument and negative second.
5014 ** compiler failure in let-convertion during flushing dead code.
5015 ** compiler failure while deriving type of TRUNCATE on an
5016 interval, containing 0.
5017 ** ASH of a negative bignum by a negative bignum count now returns
5019 ** intersection of CONS types now canonicalizes properly, fixing
5020 inconsistencies in SUBTYPEP.
5022 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
5023 * incompatible change: The --disable-debugger command line
5024 option now clobbers the debugger at a more fundamental
5025 level, by redefining #'INVOKE-DEBUGGER instead of by
5026 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
5027 is specified by ANSI to ignore *DEBUGGER-HOOK* and
5028 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
5029 enter the debugger REPL and then suffer recursive errors
5030 because *DEBUG-IO* is also messed up in --disable-debugger mode;
5031 while under the new system, BREAK in --disable-debugger mode
5032 terminates the system just as an unhandled error would.
5033 * fixed compiler performance when processing loops with a step >1;
5034 * bug fix: DOCUMENTATION now retrieves generic function
5035 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
5036 support has been systematized, and now supports the methods
5037 specified by ANSI, along with a default method and a method for
5038 slot documentation. (reported by Nathan Froyd)
5039 * bug fix: effective methods associated with a generic function are
5040 no longer cached over a change of that generic function's method
5041 combination. (reported by Andreas Fuchs)
5042 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
5043 names a non-existent directory. (thanks to Andreas Fuchs)
5044 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
5045 the PPC platform, lead to stack corruption; this has been fixed.
5046 (reported by Rainer Joswig)
5047 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
5048 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
5049 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
5050 arithmetic in general, is now much more reliable on the PPC
5052 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
5053 platform now returns the right answer.
5054 * optimization: restored some effective method precomputation in
5055 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
5056 precomputation is now tunable.
5057 * optimization: compiler-internal data structure use has been
5058 reviewed, and changes have been made that should improve the
5059 performance of the compiler by about 20%.
5060 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
5061 simple-base-strings and simple-bit-vectors is improved.
5062 * optimization: the optimization of 32-bit logical and arithmetic
5063 functions introduced in version 0.8.3 on the x86 has been
5064 implemented on the mips, ppc and sparc platforms; an
5065 implementation of the same facility, but for 64-bit arithmetic,
5066 has been added for the alpha.
5067 * microoptimization: the compiler is better able to make use of the
5068 x86 LEA instruction for multiplication by constants.
5069 * bug fix: in some situations compiler did not report usage of
5070 generic arithmetic in (SPEED 3) policy.
5071 * bug 145b fix: compiler used wrong type specifier while converting
5072 MEMBER-types to numeric.
5073 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
5075 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
5076 index argument now works properly on the Alpha platform.
5077 * bug fix: floating point exception treatment on the Alpha platform
5079 * bug fix: FILE-POSITION works much better on string input and
5080 output streams. (thanks to Nikodemus Siivola)
5081 * bug fix: many threading/garbage collection symptoms sorted.
5082 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
5083 might be pseudo-atomic.
5084 * internal change: Stopping for GC is now done with signals not
5085 ptrace. GC is now done in whichever thread wanted it, instead of
5087 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
5089 * bug fix: result form in DO is not contained in the implicit
5091 * incompatible change: ICR structure is changed; the value part of
5092 CONTINUATION is now called LVAR; corresponding functions are
5093 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
5094 * added type deriver for ISQRT (thanks to Robert E. Brown).
5095 * bug fix: better support for loading from the command line when an
5096 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
5098 * fixed some bugs revealed by Paul Dietz' test suite:
5099 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
5100 ** ROUND and FROUND now give the right answer when given very
5101 small float arguments.
5102 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
5104 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
5105 ** (GCD 0 <negative-integer>) returned <negative-integer>.
5106 ** LCM should return a non-negative integer.
5107 ** PARSE-INTEGER returned the index of a terminator instead of the
5108 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
5109 ** PARSE-INTEGER returned an incorrect index being applied to a
5111 ** LCM with two arguments of 0 returns 0 rather than signalling
5113 ** unsigned addition of a 32-bit constant with the high bit set no
5114 longer causes an internal compiler error on the x86.
5115 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
5116 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
5117 with negative last argument.
5118 ** byte specifiers with zero size and position no longer cause
5119 an error during type derivation.
5120 ** bignum multiplication on the Alpha platform now returns the
5122 * porting: The system now builds on SuSE AMD64, although it still
5123 generates a 32-bit binary.
5124 * .fasl file incompatibility: The fasl file version number has
5125 been incremented (because of the changes to internal compiler
5126 data structures referred to above).
5128 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
5129 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
5130 more accurately, on the Darwin kernel running on PowerPC hardware.
5131 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
5132 * Compiler code deletion notes now signal a condition of type
5133 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
5134 an associated MUFFLE-WARNING restart.
5135 * The compiler now performs limited argument count validation of
5136 constant format strings in FORMAT, and where appropriate in ERROR,
5137 CERROR and WARN. (thanks to Gerd Moellmann)
5138 * New ASDF-INSTALL contrib can be used for automatic download and
5139 installation of third-party Lisp code from CCLAN or other sites
5141 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
5142 which forces another thread to execute a function supplied by the
5144 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
5145 now accept and act upon their :ELEMENT-TYPE keyword argument.
5146 (reported by Martin Atzmueller, Edi Weitz)
5147 * bug fix: FILE-POSITION now accepts position designators up to
5148 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
5149 is the greater. (thanks to Patrik Nordebo)
5150 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
5151 Kalle Olavi Niemitalo)
5152 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
5153 printable. (reported by Eric Marsden)
5154 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
5155 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
5156 * x86 bug fix in control stack exhaustion checking: now shows backtrace
5157 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
5158 (thanks to Stig Sandoe)
5159 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
5160 UNREAD-CHAR now correctly includes the unread character in the
5161 target sequence. (thanks to Gerd Moellmann)
5162 * bug fix in threaded builds: the system can now be suspended and
5163 resumed by shell job control with minimal disruption.
5164 * bug fixes in times and timezones >2038AD
5165 * better handling of "where is GNU make?" problem in build scripts
5166 (thanks to Nikodemus Siivola)
5167 * new optimization: inside a named function any reference to a
5168 function with the same name is considered to be a self-reference;
5169 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
5170 optimization quality.
5171 * new optimization on x86: logical functions and + now have
5172 optimized (UNSIGNED-BYTE 32) versions, which are automatically
5173 used when the result is truncated to 32 bits.
5174 * VALUES declaration is partially enabled.
5175 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
5176 * fixed some bugs revealed by Paul Dietz' test suite:
5177 ** The system now obeys the constraint imposed by
5178 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
5179 types form a lattice under type intersection.
5180 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
5181 ** ASSOC now ignores NIL elements in an alist.
5182 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
5183 and (1+ MOST-POSITIVE-FIXNUM) answers.
5184 ** The addition of a method with invalid qualifiers to a generic
5185 function does not cause an error to be signalled immediately;
5186 a warning is signalled, and the error is generated only on
5187 calling the generic function.
5188 * changed .fasl file version number, in part to add type codes for
5189 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
5190 obscure ANSI requirements
5192 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
5193 * fixed bug 148: failure to inline-expand a local function left
5194 garbage, confusing the compiler.
5195 * fixed bugs 3cd: structure slot readers perform type check if the
5196 slot can have an invalid value (i.e. it is either not initialized
5197 or can be written with a less specific slot writer).
5198 * bug fix: the compiler now traps array references to elements off
5199 the end of an array; previously, the bounds checking in some
5200 circumstances could go off-by-one.
5201 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
5203 * type declarations for array element types now obey the description
5204 on the CLHS page "Declaration TYPE", as per discussions on
5205 sbcl-help around 2003-05-08. This means that a declaration
5206 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
5207 declaration, all references to BAR will be asserted or assumed
5208 (with THE, so dependent on compiler policy) to involve objects of
5209 type FOO. Note that no such declaration is implied in
5210 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
5211 * declared types of functions from the "Conditions"
5212 chapter. (reported by Paul Dietz)
5213 * bug fix: CERROR accepts a function as its first argument.
5214 * bug fix: NTH an NTHCDR accept a bignum as index
5215 arguments. (reported by Adam Warner)
5216 * optimization: character compare routines now optimize comparing
5217 against a constant character. (reported by Gilbert Baumann)
5218 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
5219 argument now works properly on the MIPS platform.
5220 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
5221 * repeated evaluation of the same DEFSTRUCT, a slot of which is
5222 declared to have a functional type, does not cause an error
5224 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
5225 many :DEFAULT-INITARGS. (reported by Istvan Marko)
5226 * fixed bug: if last continuation of a deleted block has a
5227 destination, this destination should be deleted too. (reported by
5229 * fixed a bug in the bootstrap process: the host compiler's values
5230 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
5231 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
5232 test case from Patrik Nordebo)
5233 * improved the ability of the disassembler on the PPC platform to
5234 provide helpful disassembly notes.
5235 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
5236 the class in more cases than previously.
5237 * bug fix: FILE-POSITION now understands :START and :END for
5238 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
5239 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
5240 8) data. (thanks to David Lichteblau)
5241 * bug fix: it is possible to add a method to a generic function
5242 without lambda list.
5243 * bug fix: reader failed to signal END-OF-FILE inside an
5244 object representation. (reported by Nikodemus Siivola)
5245 * fixed some bugs revealed by Paul Dietz' test suite:
5246 ** LAST and [N]BUTLAST should accept a bignum.
5247 ** condition slot accessors are methods.
5248 ** (VECTOR NIL) is a subtype of STRING.
5250 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
5251 * minor incompatible change: some nonsensical specialized lambda
5252 lists (used in DEFMETHOD) which were previously ignored now signal
5254 * minor incompatible change: the system is now aware of the types of
5255 variables in the COMMON-LISP package, and will signal errors for
5256 most violations of these type constraints (where previously they
5257 were silently accepted).
5258 * minor incompatible change: COMPILE-FILE now uses the freedom
5259 afforded (ANSI 3.2.2.3) to use derived function types for
5260 functions defined in the same file. This also permits the system
5261 to warn on static type mismatches and function
5262 redefinition. (Currently it does not work with high DEBUG level.)
5263 * minor incompatible change: VALUES declaration is disabled.
5264 * When issuing notes, the compiler now signals a condition of type
5265 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
5266 restart for use in user handlers. It is expected that the
5267 COMPILER-NOTE condition will eventually become a condition
5268 supertype to a hierarchy of note types, which will then be
5269 handleable in a similar fashion. However, at the moment, no such
5270 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
5271 but it's an implementation detail, not a classification for the
5273 * Changes in type checking closed the following bugs:
5274 ** type checking of unused values (192b, 194d, 203);
5275 ** template selection based on unsafe type assertions (192c, 236);
5276 ** type checking in branches (194bc).
5277 * A short form of VALUES type specifier has ANSI meaning (it has
5278 increased the number of situations when SBCL cannot perform type
5280 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5281 keywords or constants is permissible.
5282 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5283 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5284 classes. (thanks to Antonio Martinez)
5285 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5286 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5287 argument to a pretty-print stream. Instead, it leaves any such
5288 operations to DESCRIBE-OBJECT methods.
5289 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5291 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5292 lambda lists. (thanks to David Lichteblau)
5293 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5294 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5295 (thanks to Gerd Moellmann)
5296 * fixed bug 246: increased compilation speed of long
5297 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5299 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5301 * DEFCONSTANT now throws a condition of type
5302 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5303 constant to a non-EQL value; CONTINUE and ABORT restarts
5304 respectively change and preserve the value.
5305 * fixed bug 63: The code walker, part of the implementation of CLOS,
5306 is now better at handling symbol macros.
5307 * bug fix: There is no longer an internal implementation type named
5308 CL:LENGTH. (reported by Raymond Toy)
5309 * bug fix: In macro-like defining macros/special operators the
5310 implicit block does not enclose the lambda list.
5311 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5312 enclosed in parentheses) are not suitable as type specifiers, and
5313 their use properly signals an error now.
5314 * bug fix: An argument count mismatch for a type specifier in code
5315 being compiled no longer causes an unhandled error at compile
5316 time, but signals a compile-time warning.
5317 * fixed simple vector readable printing
5318 * bug fix: DESCRIBE takes more care over whether the class
5319 precedence list slot of a class is bound before accessing it.
5320 (reported by Markus Krummenacker)
5321 * bug fix: FORMATTER can successfully compile pretty-printer format
5322 strings which use variants of the ~* directive inside.
5323 * bug fix: SEARCH now applies its TEST predicate to the elements of
5324 the arguments in the correct order. (thanks to Wolfhard Buss)
5325 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5326 in type inference. (thanks to Robert E. Brown)
5327 * bug fix: Reading in symbols with an explicit package name of ""
5328 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5329 * fixed some bugs revealed by Paul Dietz' test suite:
5330 ** NIL is now allowed as a structure slot name.
5331 ** Arbitrary numbers, not just REALs, are allowed in certain
5332 circumstances in LOOP for-as-arithmetic clauses.
5333 ** Multiple class redefinitions before slot access no longer
5334 causes a type error.
5335 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5336 association between the name and a class.
5337 ** Generic functions with non-standard method-combination and over
5338 five methods all of which return constants no longer return NIL
5339 after the first few invocations. (thanks to Gerd Moellmann)
5340 ** CALL-NEXT-METHOD with no arguments now passes the original
5341 values of the arguments, even in the presence of assignment.
5342 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5344 ** DISASSEMBLE works with closures and funcallable instances.
5345 ** ADD-METHOD now returns the generic function, not the new method.
5346 ** FIND-METHOD signals an error if the lengths of the specializers
5347 is incompatible with the generic function, even if the ERRORP
5349 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5350 which its argument is a member.
5351 ** DEFCLASS only redefines the class named by its class-name
5352 argument if that name is the proper name of the class;
5353 otherwise, it creates a new class.
5354 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5355 of the UNBOUND-SLOT condition to the name of the slot.
5356 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5357 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5358 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5359 SLOT-MAKUNBOUND in the specified fashion.
5361 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5362 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5363 cross-compilation host. As a consequence, we can now bootstrap our
5364 way up to SBCL starting with a bare gcc toolchain and human-readable
5365 source code (first the source to CLISP, then the source to SBCL).
5366 * A contributed module containing a partial implementation of the
5367 simple-streams interface has been included. (thanks to Rudi
5369 * A contributed module implementing the RFC1321 Message Digest
5370 Algorithm, known as MD5, has been included.
5371 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5372 no longer has any effect, as the code controlled by this feature
5373 has been deleted. (As far as we know, no-one has ever built using
5374 this feature, and its semantics were confused in any case).
5375 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5376 work on conditions (as required by the ANSI specification),
5377 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5378 expected behaviour on conditions. Users should note, however,
5379 that such behaviour is not required by the ANSI specification,
5380 and so use of this behaviour may render their code unportable.
5381 * fixed some bugs revealed by Paul Dietz' test suite:
5382 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5384 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5385 ** SXHASH on condition objects no longer returns NIL.
5386 ** :ALLOCATION :CLASS slots are better treated; their values are
5387 updated on class redefinition, and initforms inherited from
5388 superclasses are applied.
5389 ** REMOVE-METHOD returns its generic function argument even when
5390 no method was removed.
5391 ** SHARED-INITIALIZE now initializes the values of the requested
5392 slots, including those with :ALLOCATION :CLASS.
5393 ** ALLOCATE-INSTANCE now works on structure classes defined via
5394 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5396 ** SLOT-EXISTS-P now works on conditions, as well as structures
5398 ** MAKE-LOAD-FORM now has the required methods on
5399 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5400 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5401 keyword, and now implements the SLOT-NAMES argument.
5402 ** methods with &OPTIONAL arguments no longer allow too many
5403 arguments to be passed in the call without error.
5404 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5405 option is consistent with the required arguments of the generic
5406 function lambda list.
5407 * bug fix: REQUIRE accepts a string designator. (Thanks to
5409 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5410 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5411 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5412 * bug fix: The compiler now checks for duplicated variables in macro
5414 * bug fix: SETQ on globals returns the correct value.
5415 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5416 not a COMPILER-ERROR (followed by some other strange error on
5417 choosing the CONTINUE restart).
5418 * bug fix: make.sh and friends are now more consistent in the way that
5419 they look for GNU "make".
5421 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5422 * experimental native threads support (on x86 Linux >=2.4 only).
5423 This is not compiled in by default: you need to add :SB-THREAD to
5424 the target features. See the "Beyond ANSI" chapter of the manual
5426 * fix for longstanding nonANSIism: The old distinction between
5427 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5428 The return value from CL:FIND-CLASS is now a CLOS class, and
5429 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5430 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5431 * An interface to the MetaObject Protocol, as described in Kiczales,
5432 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5433 MIT Press, 1991, is available from the SB-MOP package.
5434 * incompatible change: the SB-PCL package should now be considered
5435 a private implementation detail, and no longer a semi-private MOP
5437 * minor incompatible change: due to rearrangement for threads, the
5438 control stack and binding stack are now allocated at arbitrary
5439 addresses instead of being hardcoded per-port. Users affected by
5440 this probably have to be doing advanced things with shared
5441 libraries, and will know who they are.
5442 * minor incompatible change: Previously, all --eval forms used were
5443 processed with READ before any of them were processed with EVAL.
5444 Now each --eval form is processed with both READ and EVAL before
5445 the next --eval form is processed. (Thus package operations like
5446 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5447 work as the user might reasonably expect.)
5448 * minor incompatible change: *STANDARD-INPUT* is now only an
5449 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5451 * minor incompatible change: Y-OR-N-P is now character-oriented,
5452 not line oriented. Also, YES-OR-NO-P now works without errors.
5453 (thanks to Antonio Martinez)
5454 * sb-aclrepl module improvements: an integrated inspector, added
5455 repl features, and a bug fix to :trace command.
5456 * Known functions, which cannot be open coded by the backend, are
5457 considered to be able to check types of their arguments. (fixing
5458 a bug report by Nathan J. Froyd)
5459 * fixed a bug in computing method discriminating functions: It is
5460 now possible to define methods specialized on classes which have
5461 forward-referenced superclasses. (thanks to Gerd Moellmann)
5462 * fixed evaluation order in optional entries (reported by Gilbert
5464 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5465 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5466 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5467 required-by-AMOP NAME argument, as well as CLASS and
5468 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5469 * fixed bug 20: DEFMETHOD can define methods using names that are
5470 not the proper names of classes to designate class specializers.
5471 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5472 Unix file descriptors, instead of blowing up. (thanks to Antonio
5474 * Garbage collection refactoring: user-visible change is that a
5475 call to the GC function during WITHOUT-GCING will not do garbage
5476 collection until the end of the WITHOUT-GCING. If you were doing
5477 this you were probably losing anyway.
5478 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5479 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5480 TYPEP the latter but not the former.
5481 * The compiler issues a full WARNING for calls to undefined functions
5482 with names from the CL package.
5483 * MAP-INTO for a vector destination is open coded. (reported by
5484 Brian Downing on c.l.l)
5485 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5486 documentation string.
5487 * fixed some bugs revealed by Paul Dietz' test suite:
5488 ** COPY-ALIST now signals an error if its argument is a dotted
5490 ** Condition slots are now accessed more correctly in the presence
5491 of multiple initargs for a given slot.
5492 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5493 exclude restarts of the same name associated with a different
5495 ** DEFCLASS of forward-referenced classes with another
5496 forward-referenced class in the superclasses list no longer
5498 ** Condition slots are now initialized once each, not multiple
5499 times. (thanks to Gerd Moellmann)
5500 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5502 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5503 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5504 arguments contain duplicated elements.
5505 ** RESTART-CASE understands local macros.
5506 ** RESTART-CASE associates exactly its own restarts with a condition.
5507 ** ENDP in safe mode checks its argument to be of type LIST.
5508 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5509 in question is unbound.
5510 ** Optimized MAKE-INSTANCE functions no longer cause internal
5511 assertion failures in the presence of duplicate initargs.
5512 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5513 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5514 propagated even in the ctor optimized implementation of
5516 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5518 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5519 * a better implementation of SXHASH on (simple) bit vectors,
5520 measured both in execution speed and in distribution of results
5521 over the positive fixnums, has been installed. Likewise, a better
5522 implementation of EQUAL for simple bit vectors is now available.
5523 * fixed CEILING optimization for a divisor of form 2^k.
5524 * fixed bug 240 (emitting extra style warnings "using the lexical
5525 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5526 by Antonio Martinez)
5527 * fixed SXHASH, giving different results for NIL depending on type
5528 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
5529 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
5530 variable. (found by Rolf Wester)
5531 * SBCL does not ignore type declarations for special
5532 variables. (reported by rif on c.l.l 2003-03-05)
5533 * some bug fixes in contrib/sb-aclrepl/
5534 * fixed some bugs revealed by Paul Dietz' test suite:
5535 ** a bug in the CONS type specifier, whereby the CAR and CDR
5536 types got intertwined, has been fixed;
5537 ** the type system is now able to reason about the interaction
5538 between INTEGER and RATIO types more completely;
5539 ** APPEND, [N]REVERSE and NRECONC check that those their
5540 arguments, which must be proper lists, are really so;
5541 ** An array specialized to be unable to hold elements has been
5542 implemented, as required -- yes, really -- by ANSI;
5543 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5544 on malformed property lists;
5546 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5547 * incompatible packaging change: in line with Unix convention,
5548 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5549 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5550 * REQUIRE and PROVIDE are now optionally capable of doing something
5551 useful. See the documentation string for REQUIRE.
5552 * infrastructure for a managed SBCL contrib system: contributed
5553 modules in this release include:
5554 ** the ASDF system definition facility;
5555 ** an interface to the BSD Sockets API;
5556 ** an ACL-like convenience interface to the repl;
5557 (thanks to Kevin Rosenberg)
5558 ** an implementation of ROTATE-BYTE, with efficient implementation
5560 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5561 gives a closer approximation to the right answer than previously.
5562 (thanks to Raymond Toy)
5563 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5564 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5565 optional environment arguments, as required by ANSI.
5566 * fixed bugs in other functions taking environment objects, allowing
5567 calls with an explicit NIL environment argument to be compiled
5569 * fixed bug 228: primary return values from
5570 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5571 COMPILE or FUNCTION.
5572 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5573 :TYPE will no longer signal errors on innocuous objects.
5574 * fixed bug 231b: SETQ is better at respecting type declarations in
5575 the lexical environment.
5576 * fixed a bug in DEFCLASS: classes named by symbols with no or
5577 unprintable packages can now be defined.
5578 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5579 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5580 * fixed compiler failure related to checking types of functions.
5581 (reported by Robert E. Brown)
5582 * the compiler is now much more consistent in its error-checking
5583 treatment of bounding index arguments to sequence functions: in
5584 (SAFETY 3) code, errors will be signalled in almost all cases if
5585 invalid sequence bounding indices are passed to functions defined
5586 by ANSI to operate on sequences.
5587 * fixed a bug in the build procedure: documentation of SBCL-specific
5588 packages is now preserved and available in the final Lisp image.
5589 * lifted FDEFINITION lookup out of loops in the implementation of
5590 many list operations. (thanks to Robert E. Brown)
5591 * fixed a bug in the reader: the #n# reader macro now works for
5592 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5593 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5594 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5595 E. Brown and Tony Martinez respectively)
5596 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5597 SLOT-BOUNDP: in particular, it is now able to optimize them much
5598 better, and is now not vulnerable to having packages renamed.
5599 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5600 always called when a slot is not present in an instance. (thanks
5602 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5603 longer signal an error on unreading a character following EOF on
5604 the previous constituent stream. (thanks to Tony Martinez)
5605 * fixed some bugs revealed by Paul Dietz' test suite:
5606 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5607 not just nonnegative fixnums;
5608 ** the logical bit-array operators such as BIT-AND now accept an
5609 explicit NIL for their "opt-arg" argument (to indicate a
5610 freshly-consed result bit-array);
5611 ** ELT now signals an error on an invalid sequence index in safe
5613 ** the type system is now cleverer about negations of numeric
5614 types, and consequently understands the BIGNUM and RATIO types
5616 ** the type system is now cleverer about the interaction between
5617 INTEGER and RATIO types: while bugs still remain, many more
5618 cases are accurately computed;
5619 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5620 if it is in the last clause;
5621 ** CONSTANTLY now correctly returns a side-effect-free function in
5623 ** DECLARE is no longer treated as a special-operator; in
5624 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5625 * incremented fasl file version number due to the change in the
5626 DEFSTRUCT-SLOT-DESCRIPTION structure.
5628 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5629 * minor incompatible change: code processed by the "interpreter" or
5630 EVAL now has a compilation optimization policy of (DEBUG 2)
5631 (changed from (DEBUG 1)) to improve debuggability of interactive
5632 development, and to allow the use of the debug RETURN command in
5634 * an experimental implementation of the RETURN command for the
5635 debugger has been included. (thanks to Frederik Kuivinen)
5636 * fixed bug 62: constraints were not propagated into a loop.
5637 * fixed bug in embedded calls of SORT (reported and investigated by
5639 * fixed some bugs revealed by Paul Dietz' test suite:
5640 ** printing and reading of arrays with some dimensions having
5641 length 0 (thanks to Gerd Moellmann);
5642 ** BOA constructor with &AUX argument without a default value does
5643 not cause a type error;
5644 ** CONSTANTP now returns true for all self-evaluating objects.
5646 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5647 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5648 accessors that are related by inheritance, as specified in the
5649 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5650 Valtteri Vuorikoski)
5651 * The compiler is now able to inline functions that were defined in
5652 a complex lexical environment (e.g. inside a MACROLET).
5653 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5655 * Support for the upcoming FreeBSD-5.0 release has been included.
5656 (thanks to Dag-Erling Smorgrav)
5657 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5658 effect when it is not in a toplevel context.
5659 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5660 stand a better chance of being correct. (thanks to Gerd
5662 * fixed bug in COERCE, which now signals an error on coercing a
5663 rational to a bounded real type which excludes the expected
5665 * The compiler is now able to derive types more accurately from the
5666 COERCE and COMPILE functions.
5667 * fixed bug 223: functional binding is considered to be constant
5668 only for symbols in the CL package.
5669 * fixed bug 231: SETQ did not check the type of a variable being set
5670 (reported by Robert E. Brown)
5671 * A new optimization for MAKE-INSTANCE has been included, fixing
5672 various bugs (including relating to :ALLOCATION :CLASS slots and
5673 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5675 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5676 ** As required by ANSI, LOOP now disallows anonymous collection
5677 clauses such as COLLECT I in conjunction with aggregate boolean
5678 clauses such as THEREIS (= I 1);
5679 ** LOOP now signals an error when any variable is reused in the
5680 same loop (including the potentially useful construct analogous
5681 to WITH A = 1 WITH A = (1+ A);
5682 ** IT is only a special loop symbol within the first clause of a
5683 conditional loop clause;
5684 ** LOOP with a typed iteration variable over a hashtable now
5685 signals a type error iff it should.
5686 * fixed some other bugs revealed by Paul Dietz' test suite:
5687 ** FILE-STREAM now names the class previously known as FD-STREAM;
5688 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5689 argument) no longer signals an error;
5690 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5691 of the slot symbol, rather than using the current package
5692 ((:CONC-NAME "") continues to intern the slot's name in the
5694 * incremented fasl file version number, because of the incompatible
5695 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5696 of the new implementation of DEFINE-COMPILER-MACRO.
5698 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5699 * Support for building SBCL for MIPS platforms running in
5700 little-endian mode has now been checked in, and basic
5701 functionality on said platforms verified.
5702 * minor incompatible change: PCL now records the pathname of a file
5703 in which methods and the like are defined, rather than its
5705 * minor incompatible change: TRUENAME now considers the truename of
5706 a file naming a directory to be the pathname with :DIRECTORY
5707 component indicating that directory.
5708 * minor incompatible change: a NAMED clause in the extended form of
5709 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5710 reason for the previous behaviour is unclear.
5711 * more systematization and improvement of CLOS and MOP conformance
5712 in PCL (thanks to Gerd Moellman and Pierre Mai):
5713 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5715 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5716 primary methods with no specializers;
5717 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5719 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5720 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5721 FORWARD-REFERENCED-CLASSes; error reporting on
5722 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5724 ** SXHASH on CLOS instances now uses a slot internal to the
5725 instance to return different numbers on distinct instances,
5726 while preserving the same return value through invocations of
5728 ** DEFMETHOD signals errors when methods with longer incongruent
5729 lambda lists are added to generic functions;
5730 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5731 CLASS, as specified in AMOP;
5732 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5733 on the order returned by the primary method for classes of
5734 class STANDARD-CLASS;
5735 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5736 * fixed some bugs shown by Paul Dietz' test suite:
5737 ** DOLIST puts its body in TAGBODY;
5738 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5740 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5741 value producing form;
5742 ** if more variables are given to PROGV than values, extra
5743 variables are bound and made to have no value;
5744 ** NSUBSTITUTE on list arguments gets the right answer with
5746 ** ELT signals an error of type TYPE-ERROR when the index argument
5747 is not a valid sequence index;
5748 ** LOOP signals (at macroexpansion time) an error of type
5749 PROGRAM-ERROR when duplicate variable names are found;
5750 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5751 ** FUNCALL of special-operators now cause an error of type
5753 ** PSETQ now works as required in the presence of side-effecting
5754 symbol-macro places;
5755 ** NCONC accepts any object as its last argument;
5756 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5758 ** loop-for-as-package does not require a package to be explicitely
5760 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5762 * fixed bug 166: compiler preserves "there is a way to go"
5763 invariant when deleting code.
5764 * fixed bug 172: macro lambda lists with required arguments after
5765 &REST arguments now cause an error to be signalled. (thanks to
5767 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5768 bug. (thanks to Matthew Danish)
5769 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5771 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5772 arguments are lexically rebound. (thanks to Gerd Moellmann and
5774 * fixed bug 194: error messages are now more informative when there
5775 is no primary method applicable in a call to a generic
5776 function. (thanks to Gerd Moellmann)
5777 * fixed bug in command line argument checking (thanks to Julian
5779 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5780 (thanks to Matthew Danish)
5781 * incremented fasl file version number, because of the
5782 SXHASH-related changes in the layout of CLOS data structures
5784 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5785 * minor incompatible change: The runtime (the Unix executable named
5786 "sbcl") is now much pickier about the .core files it will load.
5787 Essentially it now requires .core files to descend from the same
5788 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5789 as the runtime does. (The intent is to prevent the crashes which
5790 can occur, and which can even be reported as mysterious failures,
5791 when people patch the sources or change the build parameters
5792 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5793 sbcl and .core files.)
5794 * fixed bug: VALUES-LIST is no longer optimized away.
5795 * fixed bug 142: The FFI conversion of C string values to Lisp
5796 string values no longer conses excessively. (thanks to Nathan
5797 Froyd porting Raymond Toy's fix to CMU CL)
5798 * began to systematize and improve MOP conformance in PCL (thanks to
5799 Nathan Froyd, Gerd Moellman and Pierre Mai):
5800 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5802 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5803 ** FINALIZE-INHERITANCE is now called on class finalization;
5804 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5805 argument precedence order.
5806 * fixed bug 202: The compiler no longer fails on functions whose
5807 derived types contradict their declared type.
5808 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5809 so it can be non-toplevel.
5810 * The fasl file version number has changed (because of the new
5811 implementation of DEFMACRO).
5812 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5813 safe code, that any length requirement by their type-specifier
5814 argument is valid. The exceptions to this are described in bug
5816 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5817 functions now check the types of their inputs as required by ANSI.
5818 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5819 introduced symbol is DECLAREd to be SPECIAL.
5820 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5821 * fixed bug: :COUNT argument to sequence functions may be negative
5822 * fixed bug: body of DO-SYMBOLS may contain declarations
5823 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5824 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5825 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5826 symbol macro only once
5827 * fixed printing of call frame when argument list is unavailable
5828 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5829 * compiler no longer signals WARNING on unknown keyword
5832 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5833 * A beta-quality port to the mips architecture running Linux,
5834 based on the old CMUCL backend, has been made. It has been tested
5835 on a big-endian kernel, and works sufficiently well to be able to
5836 rebuild itself; it has not been tested in little-endian mode.
5837 * fixed an inconsistency between gencgc.c and purify.c which made
5838 dumping/loading .core files unreliable
5839 * fixed bug 120a: The compiler now deals correctly with IFs where
5840 the consequent is the same as the alternative, instead of
5841 misderiving the return type. (thanks to Alexey Dejneka)
5842 * fixed bug 113: Logical pathnames are now dumpable (the logical
5843 host is resolved at load-time, throwing an error if it is not
5845 * fixed bug 174: FORMAT's error message is slightly clearer when a
5846 non-printing character is used in a format directive.
5847 * fixed several bugs in compiler checking of type declarations, i.e.
5848 violations of the Python "declarations are assertions" principle
5849 (thanks to Alexey Dejneka)
5850 * fixed several bugs in PCL's error checking (thanks to Gerd
5852 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5854 * fixed bug in compilation of functions as first class values
5855 (thanks to Antonio Martinez-Shotton)
5856 * The compiler's handling TYPE-ERRORs which it can prove will
5857 inevitably happen at runtime has been cleaned up and corrected
5858 in several ways. (thanks to Alexey Dejneka)
5859 * improved argument type checking for various basic arithmetic
5860 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5861 lavished on them in the past that they can be compiled in many
5862 ways in different special cases
5863 * fixed bug 181: compiler checks validity of user supplied type
5865 * cleaned up code flushing in optimization: Function calls which
5866 should signal errors for safety purposes (e.g. which ANSI says
5867 should signal errors when their arguments are of incorrect type)
5868 are no longer optimized away.
5869 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5870 * incremented fasl file version number, because changes in the
5871 implementation of sequence functions like COERCE caused
5872 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5873 in old inline expansions) to become undefined. (Actually these
5874 changes were later undone, so we might very well be binary
5875 compatible with 0.7.7 after all, but leaving the version number
5876 incremented seemed like the simplest and most conservative
5879 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5880 * An alpha-quality port to the parisc architecture running Linux,
5881 based on the old CMUCL backend, has been made. This, even more so
5882 than the other backends, should be considered still a work in
5883 progress; known problems include that the Linux kernel in 64-bit
5884 mode does not propagate the correct sigcontext structure to
5885 userspace, and consequently SBCL on a parisc64 kernel will not
5887 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5888 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5889 suppressed.) Also now that the compiler is looking at declarations
5890 in the environment, it checks optimization declarations as well,
5891 and suppresses inlining when (> DEBUG SPEED).
5892 * More fixes have been made to treatment of floating point exception
5893 treatment and other Unix signals. In particular, floating point
5894 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5895 * The detection and handling of control stack exhaustion (infinite
5896 or very deeply nested recursion) has changed. Stack exhaustion
5897 detection is now done by write-protecting pages at the OS level
5898 and applies at all optimization settings; when found, a
5899 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5900 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5901 be caught using IGNORE-ERRORS.
5902 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5903 correctly when transforming recursive LABELS functions to LETs.
5904 (thanks to Alexey Dejneka)
5905 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5906 that are names of constants or global variables.
5907 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5908 alien routines with docstrings.
5909 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5910 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5912 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5913 (thanks to Eric Marsden)
5914 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5915 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5916 * Bug fix: The SPARC backend can now compile functions involving
5917 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5918 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5919 to a functions expecting a PATHNAME-DESIGNATOR.
5920 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5921 lambda lists. (thanks to Alexey Dejneka)
5922 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5923 functions so that EXPORTing the name of the class doesn't cause
5924 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5925 to Antonio Martinez for reporting this)
5926 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5927 constant-folded without failing an assertion. (thanks to Einar
5928 Floystad Dorum for reporting this)
5929 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5930 types are now dealt with more correctly by the compiler.
5931 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5932 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5933 behaviour analogous to RENAME-FILE. This puts its behaviour more
5934 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5936 * The fasl file version number has changed again. (because of the
5937 bug fix involving the names of PCL MAKE-INSTANCE functions)
5939 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5940 * bug fix: Floating point exceptions are treated much more
5941 consistently on the x86/Linux and PPC/Linux platforms.
5942 * Array initialization with :INITIAL-ELEMENT is now much faster for
5943 cases when the compiler cannot open code the array creation, but
5944 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5945 array accesses have also seen a speed increase.
5946 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5947 specified. (This was at the root of some bad interactions between
5948 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5950 * bug fix: Internal error arguments for undefined functions are now
5951 computed correctly on the PPC/Linux platform.
5952 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5953 Raymond Toy's patch for CMU CL)
5954 * Support for the Solaris 9 operating environment has been included
5955 (thanks to Daniel Merritt)
5956 * A very ugly but hopefully complete draft of the missing FFI chapter
5957 of the manual has been created by reformatting the corresponding
5958 CMU CL manual chapter into (currently very ugly and incoherent)
5959 DocBook and bringing it up to date for SBCL behavior. Thus, the
5960 manual is now essentially complete, at least by my extreme
5961 once-and-only-once standards, whereby it's acceptable to refer to
5962 the doc strings of SB-EXT functions as the primary documentation.
5963 * The fasl file version number has changed again, due to cleanup of
5964 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5965 is no longer a static symbol.)
5967 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5968 * SBCL now builds with OpenMCL (version 0.12) as the
5969 cross-compilation host; also, more progress has been made toward
5970 bootstrapping under CLISP.
5971 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5973 * bug 158 fixed: The compiler can now deal with integer loop
5974 increments different from 1; fixing this turned out also to fix
5976 * bug 169 fixed: no more bogus warnings about using lexical bindings
5977 despite the presence of perfectly good SPECIAL declarations (thanks
5978 to David Lichteblau)
5979 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5980 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5981 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5983 * bug 180 fixed: Method combination specifications no longer ignore
5984 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5985 * bug fix: Structure type predicate functions now check their argument
5986 count as they should.
5987 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5988 correctly. (thanks to Pierre Mai)
5989 * minor incompatible change: The --noprogrammer option is deprecated
5990 in favor of the new --disable-debugger option, which is very similar.
5991 (The major difference is that it takes effect at a slightly different
5992 time at startup, causing handling of errors in --sysinit and
5993 --userinit files will be affected differently.) The
5994 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5995 been added to allow this functionality to be controlled from ordinary
5996 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5997 maintainers, who might want to run non-interactive scripts to
5998 build SBCL cores which will later be used interactively.)
5999 * minor incompatible change: The LOAD function no longer, when given
6000 a wild pathname to load, loads all files matching that pathname.
6001 Instead, an error of type FILE-ERROR is signalled.
6003 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
6004 * bug 147 fixed: The compiler preserves its block link/count
6005 invariants more correctly now so that it doesn't crash. (thanks
6007 * Dynamic loading of object files in OpenBSD is now supported. (thanks
6009 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
6010 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
6011 no-value-for-this-character as NIL (as specified by ANSI).
6012 * HOST-NAMESTRING on physical pathnames now returns a string that is
6013 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
6014 (thanks to Christophe Rhodes)
6015 * The Alpha port handles icache flushing more correctly. (thanks to
6017 * More progress has been made toward bootstrapping under CLISP. (thanks
6018 to Christophe Rhodes)
6019 * The fasl file format has changed again, because dynamic loading
6020 on OpenBSD (which has non-ELF object files) motivated some cleanups
6021 in the way that foreign symbols are transformed and passed around.
6022 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
6023 is no longer treated as whitespace by the reader, but instead as
6024 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
6025 |A
\7fB|, instead of A as it used to.
6027 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
6028 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
6029 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
6030 * SBCL now runs on the PPC archtiecture under Linux. It actually did
6031 this as of 0.7.1.45, but was left out of the previous news section
6032 (thanks to Dan Barlow)
6033 * SBCL now runs on the Solaris operating system on SPARC architectures
6034 (thanks to Christophe Rhodes's port of the CMUCL runtime)
6035 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
6036 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
6037 * SPARC backend cleanups, allowing builds of cores optimized for V8
6038 and V9 SPARCS, and also emission of code targeted to a particular
6039 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
6041 * SBCL is closer to bootstrapping under CLISP, thanks to various
6042 fixes by Christophe Rhodes.
6043 * The fasl file format has changed again, to allow the compiler's
6044 INFO database to support symbol macros.
6045 * The user manual (in doc/) is formatted into HTML more nicely.
6046 (thanks to coreythomas)
6047 * The system is smarter about SUBTYPEP relationships, especially
6048 those involving NOT types (including types such as ATOM which are
6049 represented internally using NOT types). Thus SUBTYPEP is less
6050 likely to return (VALUES NIL NIL) in general, and in particular
6051 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
6053 * The fasl file format has changed again, because the internal
6054 representation of types now includes a new slot to support the new
6055 SUBTYPEP-of-NOT-types logic.
6056 * (not a change in the main branch of SBCL, but a related prototype
6057 which can hopefully be merged into the main branch of SBCL in the
6058 future:) Brian Spilsbury has produced a Unicode-enabled variant of
6059 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
6060 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
6061 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
6062 dispatch macro character combinations. (thanks to Alexey Dejneka)
6063 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
6064 that superficially look like logical namestrings correctly.
6065 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
6067 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
6068 default supplied-p) for &optional and &key arguments. (thanks to
6071 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
6072 * incompatible change: The compiler is now less aggressive about
6073 tail call optimization, doing it only when (> SPACE DEBUG) or
6074 (> SPEED DEBUG). (This is an incompatible change because there are
6075 programs which relied on the old CMU-CL-style behavior to optimize
6076 away their unbounded recursion which will now die of stack overflow.)
6077 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
6078 for non-GENCGC systems has been increased to 20M (since that
6079 seems much closer to the likely performance optimum for modern
6080 systems than the old 4M value was)
6081 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
6082 and *DEBUG-PRINT-LEVEL*
6083 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
6084 of CMU CL's support for SPARC, and various endianness and other
6085 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
6086 * new syntactic sugar for the Unix command line: --load foo.bar is now
6087 an alternate notation for --eval '(load "foo.bar")'.
6089 ** The system now detects stack overflow and handles it gracefully,
6090 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
6091 optimization settings. (This is a good thing in general, and
6092 its introduction in this version should be particularly timely
6093 for anyone whose code fails because of suppression of tail
6095 ** The system now hunts for the C variable "environ" in a more
6096 devious way, to avoid segfaults when the C library version differs
6097 between compile time and run time. (thanks to Christophe Rhodes)
6098 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
6099 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
6100 ** The compiler no longer issues bogus style warnings for undefined
6101 classes in the same source file as the DEFCLASSes which defined
6102 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
6104 ** fixes in CONDITION class precedence list for undefined function
6105 errors (thanks to Alexei Dejneka)
6106 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
6107 correctly. (thanks to Dan Barlow)
6108 ** portability fixes aiming at bootstrapping under CLISP (thanks
6109 to Dave McDonald and Christophe Rhodes)
6110 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
6111 ** fixes in type translation and and type inference (thanks to
6113 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
6114 ** various fixes in the new ports (thanks to Dan Barlow)
6115 * several changes related to debugging:
6116 ** suppression of tail recursion, as noted above
6117 ** stack overflow detection, as noted above
6118 ** The default implementation of TRACE has changed. :ENCAPSULATE T
6119 is now the default. (For some time encapsulation has been more
6120 reliable than the breakpoint-based :ENCAPSULATE NIL
6121 implementation, at least on X86 systems; and I just noticed that
6122 encapsulation also seems closer to the spirit of the ANSI
6125 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
6127 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
6128 up properly again. (There was a packaging bug in 0.7.0 which
6129 left their definitions in SB-SYS::LOAD-FOREIGN and
6130 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
6131 vital for most things which interface to C-level interfaces,
6132 like extensions working with sockets or databases or
6133 Perl-compatible regexes or whatever, and the need to fix
6134 this bug is the main reason that 0.7.1 was released so
6136 ** DEFGENERIC is now choosier about the methods it redefines, so that
6137 reLOADing a previously-LOADed file containing DEFGENERICs does
6138 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
6139 cycle now works as it should. (thanks to Alexey Dejneka)
6140 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
6141 fixed by Christophe Rhodes. (He actually submitted this patch
6142 months ago, and I delayed until after 0.7.0.)
6143 ** Bug 111 (internal compiler confusion about runtime checks on
6144 FUNCTION types) was fixed by Alexey Dejneka.
6145 * Some internal cleanups (getting rid of variables which aren't
6146 needed now that the byte interpreter is gone) caused the fasl
6147 file format number to change again.
6149 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
6150 * major incompatible change: The default fasl file extension, i.e. the
6151 default extension for files produced by COMPILE-FILE, has changed
6152 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
6154 ** There are many changes in the implementation of the compiler.
6155 SBCL is now essentially a compiler-only implementation of ANSI
6156 Common Lisp. EVAL still "interprets" a few special cases, but
6157 almost all the interesting cases are handled by creating
6158 a LAMBDA expression, calling COMPILE on it, then calling
6159 FUNCALL on the result.
6160 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
6161 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
6162 Since the code is newer, there might still be some new bugs
6163 (though not as many as before Martin Atzmueller's fixes:-). But
6164 the new code is substantially simpler and clearer, and hopefully
6165 any remaining bugs will be simpler, less fundamental, and more
6166 fixable then the bugs in the old code.
6167 ** The revised compiler is still a little unsteady on its feet.
6169 *** The debugging information it produces (particularly the names
6170 of FUNCTION objects) is sometimes much less useful than what
6171 the old compiler produced.
6172 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
6173 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
6174 within a MACROLET) has been temporarily weakened.
6175 ** There are new compiler optimizations for various functions:
6176 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
6177 FIND-IF-NOT, POSITION-IF-NOT, and FILL
6178 *** the math functions TRUNCATE, FLOOR, and CEILING
6179 *** the function-of-all-trades COERCE
6180 Mostly these should be transparent, but there's one
6181 potentially-annoying problem (bug 117): when the compiler
6182 inline-expands a function and does type analysis on the result,
6183 it can create control paths which have type mismatches, and
6184 when it can't prove that those control paths aren't taken,
6185 it will issue WARNINGs about the type mismatches. This is
6186 a particular problem in practice for the new sequence functions.
6187 It's not clear how this should be fixed, and for now, a
6188 workaround is given in the entry for 117 in the BUGS file.
6189 ** (Because of the interaction between the two previous items --
6190 occasional inlining problems and new inline expansions -- some
6191 of the new sequence function optimizations won't really kick in
6192 completely until debugging information, and then inlining, are
6193 straightened out in some future version.)
6194 * minor incompatible changes:
6195 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
6196 DIRECTORY no longer implicitly promotes NIL slots of its
6197 pathname argument to :WILD. In particular, when you ask for the
6198 contents of a directory (which you used to be able to do without
6199 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
6200 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
6201 ** changes in behavior that ANSI explicitly defines to be
6202 implementation dependent:
6203 *** The new compiler-only implementation still conforms with ANSI,
6204 but acts a little different than before. Besides the obvious
6205 changes in performance tradeoffs (that the cost per form passed
6206 to EVAL has gone up, and the cost per form executed by EVAL
6207 has gone down), the behavior of the system changes a little
6208 because there are no longer any interpreted function objects.
6209 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
6210 e.g. doing COMPILE on the output of interactive DEFUN is
6212 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
6214 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
6215 has changed from (:CL) to NIL.
6216 *** The CHAR-NAME of unprintable ASCII characters which, unlike
6217 e.g. #\Newline and #\Tab, don't have names specified in the
6218 ANSI Common Lisp standard, is now based on their ASCII symbolic
6219 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
6220 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
6221 are no longer used for output.
6222 ** changes in internal implementation constants:
6223 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
6224 4 million. (If your application spends a lot of time GCing and
6225 you have a lot of RAM, you might want to experiment with
6226 increasing it even more.)
6227 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
6228 However, almost all old code should still continue to work without
6229 immediate update, as SB-C-CALL is now a (deprecated) nickname
6231 ** Old operator names in the style DEF-FOO are now deprecated in
6232 favor of new corresponding names DEFINE-FOO, for consistency with
6233 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
6234 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
6235 internal symbols, but a few supported extensions like
6236 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
6237 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
6238 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
6239 etc. as you get deeper into recursive calls to the debugger
6240 command loop, instead of the old "5]", "5]]", "5]]]"
6241 sequence. (I was motivated to do this when squabbles between
6242 ILISP and SBCL left me very deeply nested in the debugger. In the
6243 short term, this change will probably provoke more ILISP/SBCL
6244 squabbles, but hopefully it will be an improvement in the long run.)
6245 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
6246 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
6247 function, since declaiming return types involving aliens is
6248 (1) annoyingly messy to do by hand and (2) vital to efficient
6249 compilation of code which calls such functions.
6250 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
6251 longer reexported by the SB-EXT package. They're solely useful
6252 for alien code, so it seems more logical that you should get
6253 them from the SB-ALIEN package, not in SB-EXT.
6254 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
6255 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
6256 features. Instead, the code that they used to control is always
6257 built into the system.
6258 * many other bug fixes
6259 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
6260 advantage of the new EVAL-WHEN stuff and to clean them up in
6261 general, and they are now more ANSI-compliant in a number of
6262 ways. Martin Atzmueller is responsible for a lot of this.
6263 ** Besides the cleanups discussed above, Martin Atzmueller fixed
6265 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
6266 *** correct ERROR type for various file operations
6267 *** some fixes for Lisp streams
6268 *** DEFMETHOD syntax checking
6269 *** changing old weird representation of debug information as
6270 strings (which, among their other deficiencies, don't transform
6271 correctly when you rename packages, and don't change their
6272 print representation when you change things like *PACKAGE*
6273 and *PRINT-LENGTH*) to symbols and lists of symbols
6274 He also made several improvements and fixed several bugs in DESCRIBE.
6275 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6277 *** misbehavior of WRITE-STRING/WRITE-LINE
6278 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6279 and several other LOOP problems as well
6280 *** DIRECTORY when similar filenames are present
6281 *** DEFGENERIC with :METHOD options
6282 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6283 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6284 *** argument ordering in FIND with :TEST option
6285 *** mishandled package designator argument in APROPOS-LIST
6286 *** various problems in the backquote readmacro
6287 *** a bug in APROPOS
6288 *** probably some others that I'm not describing very well here,
6289 since the CVS log documents them by reference to sbcl-devel
6290 messages, and the SourceForge archives aren't working well.:-(
6291 ** Dan Barlow improved the Alpha port (and is making progress on the
6292 PPC port, for those of you who think different).
6293 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6294 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6295 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6296 continues to work on the SPARC port (for those of you in a position
6297 to look down upon our little PC-compatible boxes from a great height).
6298 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6299 and uses that copy, rather than the current dynamic value, when
6300 it's trying to decide whether to truncate output. Thus e.g.
6301 (let ((*print-lines* 50))
6302 (pprint-logical-block (stream nil)
6304 (let ((*print-lines* 8))
6305 (print (aref possiblybigthings i) stream)))))
6306 should now truncate the logical block only at 50 lines, instead of
6307 often truncating it at 8 lines, as it did before.
6308 * The doc/cmucl/ directory, containing old CMU CL documentation
6309 from the time of the fork, is no longer part of the base system.
6310 SourceForge has shut down its anonymous FTP service, and with it
6311 my original plan for distributing the old CMU CL documentation
6312 there. For now, if you need these files you can download an old
6313 SBCL source release and extract them from it.
6314 * The fasl file version number changed again, for dozens of reasons,
6315 some of which are apparent above.
6317 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6318 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6319 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6320 patch, so that DISASSEMBLE output is much nicer.
6321 * The code in the SB-PROFILE package now seems reasonably stable.
6322 I still haven't decided what the final interface should look like
6323 (I'd like PROFILE to interact cleanly with TRACE, since both
6324 facilities use function encapsulation) but if you have a need
6325 for profiling now, you can probably use it successfully with
6326 the current CMU-CL-style interface.
6327 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6328 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6329 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6330 link now returns the dangling link itself, and for similar
6331 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6332 link itself. (In these cases the old code signalled an error and
6333 looped endlessly, respectively.) Thus, DIRECTORY now works even
6334 in the presence of dangling and cyclic symbolic links.
6335 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6336 is now a supported extension again, since the consensus on
6337 sbcl-devel was that it can be useful for ordinary development
6338 work, not just for debugging SBCL itself.
6339 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6340 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6341 that currently-defined functions might be redefined later with
6342 different return types.
6343 * Hash tables can be printed readably, as inspired by CMU CL code
6344 of Eric Marsden and SBCL code of Martin Atzmueller.
6345 * better error handling in CLOS method combination, thanks to
6346 Martin Atzmueller porting Pierre Mai's CMU CL patches
6347 * more overflow fixes for >16Mbyte I/O buffers
6348 * A bug in READ has been fixed, so that now a single Ctrl-D
6349 character suffices to cause end-of-file on character streams.
6350 In particular, now you only need one Ctrl-D at the command
6351 line (not two) to exit SBCL.
6352 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6354 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6355 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6356 does the right thing.
6357 * The implementation of some type tests, especially for CONDITION
6358 types, is now tidier and maybe faster, due to CMU CL code
6359 originally by Douglas Crosher, ported by Martin Atzmueller.
6360 * Some math functions have been fixed, and there are new
6361 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6362 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6363 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6364 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6365 likely to be built into sbcl-0.7.0.)
6366 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6367 CL, ported to SBCL by Martin Atzmueller)
6368 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6369 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6370 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6371 * There's a new slam.sh hack to shorten the edit/compile/debug
6372 cycle for low-level changes to SBCL itself, and a new
6373 :SB-AFTER-XC-CORE target feature to control the generation of
6374 the after-xc.core file needed by slam.sh.
6375 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6376 COMPILE-FILE is no longer supported, so that now every function
6377 gets an entry point, so that block compilation looks a little
6378 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6379 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6380 returns the number of bytes consed since the system started,
6381 rather than the number consed since the first time the function
6382 was called. (The new definition parallels ANSI functions like
6383 CL:GET-INTERNAL-RUN-TIME.)
6384 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6385 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6386 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6387 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6388 * Fasl file version numbers are now independent of the target CPU,
6389 since historically most system changes which required version
6390 number changes have affected all CPUs equally. Similarly,
6391 the byte fasl file version is now equal to the ordinary
6394 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6395 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6396 is no longer recognized. I apologize for this, because it was
6397 listed in SB-EXT as a supported extension, but I found that
6398 its existing behavior was poorly specified, as well as incorrectly
6399 specified, and it looked like too much of a mess to straighten it
6400 out. I have enough on my hands trying to get ANSI stuff to work..
6401 * many patches ported from CMU CL by Martin Atzmueller, with
6402 half a dozen bug fixes in pretty-printing and the debugger, and
6403 half a dozen others elsewhere
6404 * fixed bug 13: Floating point infinities are now supported again.
6405 They might still be a little bit flaky, but thanks to bug reports
6406 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6407 as flaky as they were.
6408 * The --noprogrammer command line option is now supported. (Its
6409 behavior is slightly different in detail from what the old man
6410 page claimed it would do, but it's still appropriate under the
6411 same circumstances that the man page talks about.)
6412 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6413 are now supported, and enabled by default. Thus, the compiler can
6414 handle many floating point and complex operations much less
6415 inefficiently. (Thus e.g. you can implement a complex FFT
6417 * The compiler now detects type mismatches between DECLAIM FTYPE
6418 and DEFUN better, and implements CHECK-TYPE more correctly, and
6419 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6420 thanks to patches from Martin Atzmueller.
6421 * various fixes to make the cross-compiler more portable to
6422 ANSI-conforming-but-different cross-compilation hosts (notably
6423 Lispworks for Windows, following bug reports from Arthur Lemmens)
6424 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6425 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6426 fixed thanks to Pierre Mai's CMU CL patches.
6427 * fixes to keep the system from overflowing internal counters when
6428 it tries to use i/o buffers larger than 16M bytes
6429 * fixed bug 45a: Various internal functions required to support
6430 complex special functions have been merged from CMU CL sources.
6431 (When I was first setting up SBCL, I misunderstood a compile-time
6432 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6433 * improved support for type intersection and union, fixing bug 12
6434 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6435 more obscure bugs as well
6436 * some steps toward byte-compiling non-performance-critical
6437 parts of the system, courtesy of patches from Martin Atzmueller
6438 * Christophe Rhodes has made some debian packages of sbcl at
6439 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6440 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6441 stable, but are nonetheless usable. When he's ready, I'd be happy
6442 to add them to the SourceForge "File Releases" section. (And if
6443 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6444 * new fasl file format version number (because of changes in
6445 internal representation of (OR ..) types to accommodate the new
6446 support for (AND ..) types, among other things)
6448 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6449 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6451 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6453 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6454 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6455 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6456 * DESCRIBE now works on structure objects again.
6457 * Most function call argument type mismatches are now handled as
6458 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6459 know whether the function will be redefined before the call is
6460 executed. (The compiler could flag local calls with full WARNINGs,
6461 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6462 it doesn't keep track of enough information to know whether calls
6463 are local in this sense.)
6464 * Compiler output is now more verbose, with messages truncated
6465 later than before. (There should be some supported way for users
6466 to override the default verbosity, but I haven't decided how to
6467 provide it yet, so this behavior is still controlled by the internal
6468 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6469 src/compiler/ir1util.lisp.)
6470 * Fasl file format version numbers have increased again, because
6471 support for the Gray streams extension changes the layout of the
6472 system's STREAM objects.
6473 * The Gray subclassable streams extension now works, thanks to a
6474 patch from Martin Atzmueller.
6475 * The full LOAD-FOREIGN extension (not just the primitive
6476 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6477 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6478 but like most other programs, it defaults to copying the Unix
6479 environment from the original process instead of starting the
6480 new process in an empty environment.
6481 * Extensions which manipulate the Unix environment now support
6482 an :ENVIRONMENT keyword option which doesn't smash case or
6483 do other bad things. The CMU-CL-style :ENV option is retained
6484 for porting convenience.
6485 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6486 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6488 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6490 * A patch from Martin Atzmueller seems to have solved the SIGINT
6491 problem, and as far as we know, signal-handling now works cleanly.
6492 (If you find any new bugs, please report them!)
6493 * The system no longer defaults Lisp source file names to types
6494 ".l", ".cl", or ".lsp", but only to ".lisp".
6495 * The compiler no longer uses special default file extensions for
6496 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6497 seems to expect a single default extension for all compiled code,
6498 and there's no compelling reason to try to stretch the standard
6499 to allow two different extensions.) Instead, byte-compiled files
6500 default to the same extension as native-compiled files.
6501 * Fasl file format version numbers have increased again, because
6502 a rearrangement of internal implementation packages made some
6503 dumped symbols in old fasl files unreadable in new cores.
6504 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6505 many fewer weird special cases.
6506 * Bug #17 (differing COMPILE-FILE behavior between logical and
6507 physical pathnames) has been fixed, and some related misbehavior too,
6508 thanks to a patch from Martin Atzmueller.
6509 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6510 by Tim Moore, ported to SBCL by Martin Atzmueller.
6511 * Martin Atzmueller fixed several filesystem-related problems,
6512 including bug #36, in part by porting CMU CL patches, which were
6513 written in part by Paul Werkowski.
6514 * More compiler warnings in src/runtime/ are gone, thanks to
6515 more patches from Martin Atzmueller.
6516 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6519 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6521 * DESCRIBE now works on CONDITION objects.
6522 * The debugger now handles errors which arise when trying to print
6523 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6525 * The build system now uses an additional file, customize-target-features.lisp,
6526 to allow local modifications to the target *FEATURES* list. (The point of
6527 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6528 debugging features enabled, without having to worry about propagating it
6529 into everyone's system when I do a "cvs update".) When no
6530 customize-target-features.lisp file exists, the target *FEATURES* list
6531 should be constructed the same way as before.
6532 * fixed bugs in DEFCONSTANT ANSI-compatibility:
6533 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
6534 warn about behavior which is undefined under the ANSI spec. Note: This
6535 is specified by ANSI, but it's not very popular with programmers.
6536 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
6537 macro in the SBCL sources for an example of a workaround which you
6538 might use to make portable ANSI-standard code which does what you want.
6539 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
6540 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
6541 when it's used as a non-toplevel form. (This is required in order
6542 to implement the DEFCONSTANT-EQX macro.)
6543 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6544 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6545 funny things, due to bugs in the implementation of EVAL-WHEN
6546 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6547 non-toplevel DEFCONSTANTs are uncommon.)
6548 * The core file version number and fasl file version number have been
6549 incremented, because the old noncompliant DEFCONSTANT behavior involved
6550 calling functions which no longer exist, and because I also took the
6551 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6552 * fixed bug 1 (error handling before read-eval-print loop starts), and
6553 redid debugger restarts and related debugger commands somewhat while
6555 ** The QUIT debugger command is gone, since it did something
6556 rather different than the SB-EXT:QUIT command, and since it never
6557 worked properly outside the main toplevel read/eval/print loop.
6558 Invoking the new TOPLEVEL restart provides the same functionality.
6559 ** The GO debugger command is also gone, since you can just invoke
6560 the CONTINUE restart directly instead.
6561 ** The TOP debugger command is also gone, since it's redundant with the
6562 FRAME 0 command, and since it interfered with abbreviations for the
6564 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6566 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6567 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6568 some porting work by Martin Atzmueller)
6569 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6570 with a boatload of patches which he ported to SBCL. Now that those
6572 ** The system tries to make sure that its low-priority messages
6573 are prefixed by semicolons, to help people who like to use
6574 syntax highlighting in their ILISP buffer. (This patch
6575 was originally due to Raymond Toy.)
6576 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6577 patches originally written by Raymond Toy.
6578 ** The compiler understands coercion between single-value and
6579 multiple-VALUES type expressions better, getting rid of some very
6580 weird behavior, thanks to patches originally by Robert MacLachlan
6581 and Douglas Crosher.
6582 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6583 lambda lists, thanks to a patch originally by Pierre Mai.
6584 ** The system no longer bogusly warns about "abbreviated type
6586 ** The compiler gets less confused by inlining and RETURN-FROM,
6587 thanks to some patches originally by Tim Moore.
6588 ** The system no longer hangs when dumping circular lists to fasl
6589 files, thanks to a patch originally from Douglas Crosher.
6590 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6591 undefined function error.
6592 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6593 in structure slot initforms) for now, documented workaround instead:-|
6594 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6595 * fixed bug 5: added stubs for various Gray stream functions called
6596 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6597 installed, at least appropriate type errors are generated
6598 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6599 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6600 consistently in DEFMETHOD forms.
6601 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6602 it doesn't seem to affect SBCL after all
6603 * The C runtime system now builds with better optimization and many
6604 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6606 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6608 * The system is now under CVS at SourceForge (instead of the
6609 CVS repository on my home machine).
6610 * The new signal handling code has been tweaked to treat register
6611 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6612 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6613 downstream, e.g. in debug-int.lisp, has implicit dependencies
6614 on the unsignedness of integer representation of machine words,
6615 and that caused the system to bomb out with infinite regress
6616 when trying to recover from type errors involving signed values,
6617 e.g. (BUTLAST '(1 2 3) -1).)
6618 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6619 (This was one of the bugs Peter Van Eynde reported back in July.)
6620 * The system now uses code inspired by Colin Walters' O(N)
6621 implementation of MAP (from the cmucl-imp@cons.org mailing
6622 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6623 inline the MAP operation, and there is more than one
6624 sequence argument to the MAP call (so that it can't just
6625 do ETYPECASE once and for all based on the type of the
6626 single sequence argument). (The old non-inline implementation
6627 of the general M-argument sequence-of-length-N case required
6628 O(M*N*N) time when any of the sequence arguments were LISTs.)
6629 * The QUIT :UNIX-CODE keyword argument has been renamed to
6630 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6631 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6633 * Raymond Wiker's patches to port dynamic loading from Linux to
6634 FreeBSD have been added.
6635 * The BUGS file is now more nearly up to date, thanks in large part
6636 to Martin Atzmueller's review of it.
6637 * The debugger now flushes standard output streams before it begins
6638 its output ("debugger invoked" and so forth).
6639 * The core version number and fasl file version number have both
6640 been incremented, because of incompatible changes in the layout
6642 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6643 used to not be called for a saved Lisp image.)
6644 * Martin Atzmueller's version of a patch to fix a compiler crash,
6645 as posted on sbcl-devel 13 September 2000, has been installed.
6646 * Instead of installing Martin Atzmueller's patch for the
6647 compiler transform for SUBSEQ, I deleted the compiler transform,
6648 and transforms for some similar consing operations.
6649 * A bug in signal handling which kept TRACE from working on OpenBSD
6651 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6652 away by constant folding
6653 * The system now defines its address space constants in one place
6654 (in the Lisp sources), and propagates them automatically elsewhere
6655 (through GENESIS and the sbcl.h file). Therefore, patching the
6656 address map is less unnecessarily tedious and error-prone. The
6657 Lisp names of address space constants have also been systematized.
6658 * CVS tags like dollar-Header-dollar have been removed from
6659 the sources, because they have never saved me trouble and
6660 they've been source of trouble working with patches and other
6661 diff-related operations.
6662 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6663 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6665 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6667 * The system has been ported to OpenBSD.
6668 * The system now compiles with a simple "sh make.sh" on the systems
6669 that it's supported on. I.e., now you no longer need to tweak
6670 text in the target-features.lisp-expr and symlinks in src/runtime/
6671 by hand, the make.sh takes care of it for you.
6672 * The system is no longer so grossly inefficient when compiling code
6673 involving vectors implemented as general (not simple) vectors (VECTOR T),
6674 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6675 which dares to use the various sequence functions on non-simple
6676 vectors, takes less of a performance hit.
6677 * There is now a primitive type predicate VECTOR-T-P
6678 to test for the (VECTOR T) type, so that e.g.
6679 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6680 can now be compiled with some semblance of efficiency. (The old code
6681 turned the type declaration into a full call to %TYPEP at runtime!)
6682 * AREF on (VECTOR T) is still not fast, since it's still compiled
6683 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6684 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6685 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6686 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6687 without making full calls to SUBTYPEP at runtime.
6688 (Some analogous efficiency issues for non-simple vectors specialized to
6689 element types other than T, or for non-simple multidimensional arrays,
6690 have not been addressed. They could almost certainly be handled the
6691 same way if anyone is motivated to do so.)
6692 * The changes in array handling break binary compatibility, so
6693 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6694 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6695 instead of (VALUES T T).
6696 * By following the instructions that Dan Barlow posted to sbcl-devel
6697 on 2 July 2000, I was able to enable primitive dynamic object
6698 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6699 functionality is not implemented (since it calls ld to resolve
6700 library references automatically, requiring RUN-PROGRAM for its
6701 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6702 try to resolve library references) is now supported.
6703 * The system now flushes the standard output streams when it terminates,
6704 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6705 them at several other probably-convenient times, e.g. in each pass of
6706 the toplevel read-eval-print loop, and after evaluating a form given
6707 as an "--eval" command-line option. (These changes were motivated by a
6708 discussion of stream flushing issues on cmucl-imp in August 2000.)
6709 * The source transform for TYPEP of array types no longer assumes
6710 that an array whose element type is a not-yet-defined type
6711 is implemented as an array of T, but instead punts, so that the
6712 type will be interpreted at runtime.
6713 * There is now some support for cross-compiling in make.sh: each of
6714 the phases of make.sh has its own script. (This should be transparent
6715 to people doing ordinary, non-cross-compile builds.)
6716 * Since my laptop doesn't have hundreds of megabytes of memory like
6717 my desktop machine, I became more motivated to do some items on
6718 my to-do list in order to reduce the size of the system a little:
6719 ** Arrange for various needed-only-at-cold-init things to be
6720 uninterned after cold init. To support this, those things have
6721 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6722 symbols with such names are now uninterned after cold init).
6723 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6724 fasl files for cold load.
6725 ** Remove the old compiler structure pooling code (which used to
6726 be conditional on the target feature :SB-ALLOC) completely.
6727 ** Redo the representation of some data in cold init to be more compact.
6728 (I also looked into supporting byte compiled code at bootstrap time,
6729 which would probably reduce the size of the system a lot, but that
6730 looked too complicated, so I punted for now.)
6731 * The maximum signal nesting depth in the src/runtime/ support code has
6732 been reduced from 4096 to 256. (I don't know any reason for the very
6733 large old value. If the new smaller value turns out to break something,
6734 I'll probably just bump it back up.)
6735 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6737 * Many, many bugs reported by Peter Van Eynde have been added to
6738 the BUGS list; some have even been fixed.
6739 * While enabling dynamic object file loading, I tried to make the
6740 code easier to understand, renaming various functions and variables
6741 with less ambiguous names, and changing some function calling
6742 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6743 * While trying to figure out how to do the OpenBSD port, I tried to
6744 clean up some of the code in src/runtime/. In particular, I dropped
6745 support for non-POSIX signal handling, added various comments,
6746 tweaked the code to reduce the number of compilation warnings, and
6747 renamed some files to increase consistency.
6748 * To support the new automatic configuration functionality in make.sh,
6749 the source file target-features.lisp-expr has been replaced with the
6750 source file base-target-features.lisp-expr and the machine-generated
6751 file local-target-features.lisp-expr.
6752 * fixed a stupid quoting error in make.sh so that using CMU CL
6753 "lisp -batch" as cross-compilation host works again
6755 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6757 * DESCRIBE no longer tries to call itself recursively to describe
6758 bound/fbound values, so that it no longer fails on symbols which are
6759 bound to themselves (like keywords, T, and NIL).
6760 * DESCRIBE now works on generic functions.
6761 * The printer now prints less-screwed-up representations of closures
6762 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6763 * A private symbol is used instead of the :EMPTY keyword previously
6764 used to mark empty slots in hash tables. Thus
6765 (DEFVAR *HT* (MAKE-HASH-TABLE))
6766 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6767 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6768 now does what ANSI says that it should. (You can still get
6769 similar noncompliant behavior if bang on the hash table
6770 implementation with all the symbols you get back from
6771 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6772 This breaks binary compatibility, since tests for equality to
6773 :EMPTY are wired into things like the macroexpansion of
6774 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6776 * There's now a minimal placeholder implementation for CL:STEP,
6777 as required by ANSI.
6778 * An obscure bug in the interaction of the normal compiler, the byte
6779 compiler, inlining, and structure predicates has been patched
6780 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6781 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6783 * Missing ordinary arguments in a macro call are now detected even
6784 when the macro lambda list contains &KEY or &REST.
6785 * The debugger no longer complains about encountering the top of the
6786 stack when you type "FRAME 0" to explicitly instruct it to go to
6787 the top of the stack. And it now prints the frame you request even
6788 if it's the current frame (instead of saying "You are here.").
6789 * As specified by ANSI, the system now always prints keywords
6790 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6792 * The default initial SIZE of HASH-TABLEs is now smaller.
6793 * Type information from CLOS class dispatch is now propagated
6794 into DEFMETHOD bodies, so that e.g.
6795 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6797 is now basically equivalent to
6798 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6799 (DECLARE (TYPE SINGLE-FLOAT X))
6801 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6802 operation, without having to do run-time type dispatch.
6803 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6804 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6805 * Since I don't seem to be making big file reorganizations very often
6806 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6807 is overflowing my ability to conveniently back them up), I've finally
6808 checked the system into CVS. (The CVS repository is on my home system,
6809 not at SourceForge -- putting it on SourceForge might come later.)
6810 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6811 high-level GC-NOTIFY-FOO functions send their output. (There's
6812 still very little control of where low-level verbose GC functions
6813 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6814 less than it used to -- the GC-NOTIFY-FOO functions are now under
6815 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6816 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6817 in only one place in the source code, and propagates it automatically
6818 everywhere that it's needed. Thus e.g. when I bump the version from
6819 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6820 * The C source files now include boilerplate legalese and documentation
6821 at the head of each file (just as the Lisp source files already did).
6822 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6823 to his page will be replaced with a link to his new CLiki service.
6825 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6827 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6828 * The build process now looks for GNU make under the default name "gmake",
6829 instead of "make" as it used to. If GNU make is not available as "gmake"
6830 on your system, you can change this default behavior by setting the
6831 GNUMAKE environment variable.
6832 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6833 can build without error under CMU CL.
6835 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6837 * There is now a partial SBCL user manual (with some new text and some
6838 text cribbed from the CMU CL manual).
6839 * The beginnings of a profiler have been added (starting with the
6840 CMU CL profiler and simplifying and cleaning up). Eventually the
6841 main interface should be through the TRACE macro, but for now,
6842 it's still accessed through vaguely CMU-CL-style functions and macros
6843 exported from the package SB-PROFILE.
6844 * Some problems left over from porting CMU CL to the new
6845 cross-compilation bootstrap process have been cleaned up:
6846 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6847 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6848 part when getting rid of the compiler *BACKEND* stuff.)
6849 ** The value of *NULL-TYPE* was screwed up, because it was
6850 being initialized before the type system knew the final
6851 definition of the 'NULL type. This screwed up several key
6852 optimizations in the compiler, causing inefficiency in all sorts
6853 of places. (I found it because I wanted to understand why
6854 GET-INTERNAL-RUN-TIME was consing.)
6855 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6856 PROCLAIM FTYPE information. Unfortunately this broke binary
6857 compatibility again, since now the forms output by DEFGENERIC
6858 to refer to functions which didn't exist in 0.6.3.
6859 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6860 can use the new (as of 0.6.3) transform for SOME into MAP into
6862 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6863 values to (INTEGER 0 1000000), so that the time code will no longer
6864 occasionally get blown up by Linux returning 1000000 microseconds
6865 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6866 its output conform to the ANSI spec. (Alas, this makes its output
6867 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6868 * A full call to MAP NIL with a single sequence argument no longer conses.
6869 * fixes to problems pointed out by Martin Atzmueller:
6870 * The manual page no longer talks about multiprocessing as though
6871 it were currently supported.
6872 * The ILISP support patches have been removed from the distribution,
6873 because as of version 5.10.1, ILISP now supports SBCL without us
6874 having to maintain patches.
6875 * added a modified version of Raymond Toy's recent CMU CL patch for
6876 EQUALP comparison of HASH-TABLE
6878 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6880 * The system still can't cross-compile itself with
6881 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6882 entails), but at least it can compile more of itself that way
6883 than it used to be able to, and various buglets which were uncovered
6884 by trying to cross-compile itself that way have now been fixed.
6885 * This release breaks binary compatibility again. This time
6886 at least I've incremented the FASL file format version to 2, so that the
6887 problem can be detected reliably instead of just causing weird errors.
6888 * various new style warnings:
6889 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6890 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6891 ** using the lexical binding of a variable named in the *FOO* style
6892 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6893 as specified by ANSI.
6894 * *RANDOM-STATE* is no longer automatically initialized from
6895 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6896 default behavior of the system is to repeat its behavior every time
6897 it's run. If you'd like to change this behavior, you can always
6898 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6899 old convention there was no comparably easy way to get the system to
6900 repeat its behavior every time it was run.
6901 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6902 FTYPE declarations has been removed, in favor of their ANSI
6903 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6904 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6905 the types of their sequence arguments can be determined at compile time.
6906 This is done through a new open code expansion for MAP which eliminates
6907 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6908 argument types can be determined at compile time.
6909 * The optimizer now transforms COERCE into an identity operation when it
6910 can prove that the coerced object is already of the correct type. (This
6911 can be a win for machine generated code, including the output of other
6912 optimization transforms, such as the MAP transform above.)
6913 * Credit information has been moved from source file headers into CREDITS.
6914 * Source file headers have been made more standard.
6915 * The CASE macro now compiles without complaining even when it has
6918 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6920 * (Note that the way that the PCL macroexpansions were rewritten
6921 to accommodate the change in DEFGENERIC below breaks binary
6922 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6923 not run under sbcl-0.6.2. Once we get out of alpha releases,
6924 i.e. hit release 1.0.0, we'll probably try to maintain binary
6925 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6926 and sbcl-1.4.4. Until then, however, it might be fairly common
6927 for maintenance releases to break binary compatibility.)
6928 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6930 * The reporting of unhandled signals has been changed to print some
6931 explanatory text as well as the report form. (Previously only
6932 the report form was printed.)
6933 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6934 it defines, so that the compiler no longer issues undefined function
6935 warnings for compiled-but-not-yet-loaded generic functions.
6936 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6937 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6938 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6939 section of the ANSI spec are supported.
6940 * The "" nickname for the "KEYWORD" package has been removed.
6941 The reader still handles symbol tokens which begin with a package marker
6942 as keywords, but it doesn't expose its mechanism for doing so in the
6943 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6944 * The system now issues STYLE-WARNINGs for contradictory TYPE
6945 proclamations. (Warnings for contradictory FTYPE proclamations would
6946 be nice too, but those can't be done usefully unless the type system
6947 is made smarter about FUNCTION types.)
6948 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6949 systematized, so that "*target-*.lisp is supposed to exist only on the
6950 target and imply that there's a related file which exists on the
6951 host, and *host-*.lisp is supposed to exist only on the host and imply
6952 that there's a related file which exists on the target. This involves a
6953 lot of renaming. Hopefully the acute confusion caused by the renaming
6954 will be justified by the reduction in chronic confusion..
6955 ** runtime-type.lisp -> early-target-type.lisp
6956 ** target-type.lisp -> late-target-type.lisp
6957 ** early-host-format.lisp -> early-format.lisp
6958 ** late-host-format.lisp -> late-format.lisp
6959 ** host-error.lisp -> misc-error.lisp
6960 ** early-error.lisp -> early-target-error.lisp
6961 ** late-error.lisp -> late-target-error.lisp
6962 ** host-defboot.lisp -> early-defboot.lisp
6963 ** code/misc.lisp -> code/target-misc.lisp
6964 ** code/host-misc.lisp -> code/misc.lisp
6965 ** code/numbers.lisp -> code/target-numbers.lisp
6966 ** code/early-numbers.lisp -> numbers.lisp
6967 ** early-host-type.lisp -> early-type.lisp
6968 ** late-host-type.lisp -> late-type.lisp
6969 ** host-typep.lisp -> typep.lisp
6970 ** load.lisp -> target-load.lisp
6971 ** host-load.lisp -> load.lisp
6972 ** host-disassem.lisp -> disassem.lisp
6973 ** host-insts.lisp -> insts.lisp
6974 ** byte-comp.lisp -> target-byte-comp.lisp
6975 ** host-byte-comp.lisp -> byte-comp.lisp
6976 ** host-signal.lisp -> signal.lisp
6977 ** host-defstruct.lisp -> defstruct.lisp
6978 ** late-target-type.lisp -> deftypes-for-target.lisp
6979 Furthermore, several other previously target-only files foo.lisp (e.g.
6980 hash-table.lisp and random.lisp) have been split into a target-and-host
6981 foo.lisp file and a target-only target-foo.lisp file, with their key type
6982 definitions in the target-and-host part, so that the cross-compiler will
6983 know more about target types.
6984 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6985 gone away. In their place are various *BACKEND-FOO* variables
6986 corresponding to the slots of the old structure.
6987 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6988 into the target SBCL has been fixed.
6989 * The chill.lisp system for loading cold code into a running SBCL
6991 * Support for the CMU CL "scavenger hook" extension has been removed.
6992 (It was undocumented and unused in the CMU CL sources that SBCL was
6993 derived from, and stale in sbcl-0.6.1.)
6994 * Various errors in the cross-compiler type system were detected
6995 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6996 (enabling various consistency checks). Many of them were fixed,
6997 but some hard problems remain, so the compiler is back to
6998 running without *TYPE-SYSTEM-INITIALIZED* for now.
6999 * As part of the cross-compiler type system cleanup, I implemented
7000 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
7001 * I have started adding UNCROSS calls throughout the type system
7002 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
7003 on cross-compiler input files will be able to go away, and various
7005 * CONSTANTP now returns true for quoted forms (as explicitly required
7008 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
7010 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
7011 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
7012 (MAKE-LIST -1). In the longer term, it ought to become true
7013 that declarations are assertions even at SAFETY 1. For now, it's not
7014 quite true even at SAFETY 3, but it's at least more nearly true..
7015 (Note that this change seems to increases the size of the system by
7016 O(5%) and to decrease the speed of the compiler by 20% or more.)
7017 * changed ALIEN printing to be much more abbreviated, as a short-term fix
7018 for the problem of printing dozens of lines of distracting information
7019 about low-level system machinery as part of the top stack frame
7020 on entry to the debugger when an undefined function was called.
7021 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
7022 is not reset to COMMON-LISP-USER.
7023 * Compilation of stuff related to dyncount.lisp has been made conditional
7024 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
7025 smaller. The various dyncount-related symbols have been moved into
7026 a new "SB-DYNCOUNT" package.
7027 * tty-inspect.lisp has been renamed to inspect.lisp.
7028 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
7029 feature has gone away. (When we eventually port to other flavors of
7030 libc and/or Unix, we'll try to make the differences between flavors
7031 invisible at the user level.)
7032 * Various other *FEATURES* tags, and/or their associated conditionals,
7033 have been removed if obsolescent, or given better documentation, or
7034 sometimes given more-mnemonic names.
7036 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
7038 * tidied up "make.sh" script
7039 * tidied up system directory structure
7040 * better "clean.sh" behavior
7041 * added doc/FOR-CMUCL-DEVELOPERS
7042 * many many small tweaks to output format, e.g. removing possibly-confusing
7043 trailing #\. character in DESCRIBE-INSTANCE
7044 * (EQUALP #\A 'A) no longer signals an error.
7045 * new hashing code, including EQUALP hashing
7046 * tidied up Lisp initialization and toplevel
7047 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
7048 * command line argument processing
7049 * added POSIX-GETENV function to deal with Unix-ish environment variables
7050 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
7051 terminating SBCL on EOF
7052 * non-verbose GC by default
7053 * There is no more "sbcl" shell script; the sbcl file is now the C
7054 runtime executable (just like CMU CL).
7055 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
7057 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
7058 symbol and package information as Lisp native symbol and package objects
7059 instead of strings naming symbols and strings naming packages. This way,
7060 whenever packages are renamed (as in warm init), debug information is
7061 transformed along with everything else.
7062 * tweaked the optimization policy declarations which control the building
7063 of SBCL itself. Now, among other things, the system no longer saves
7064 source location debugging information. (This helps two problems at once
7065 by reducing SBCL size and by keeping SBCL from trying to look for its
7066 sources -- which may not exist -- when reporting errors.)
7067 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
7068 debugging and testing purposes
7069 * cleaned up printing, making the printer call PRINT-OBJECT for
7070 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
7071 methods, giving nearly-ANSI behavior
7072 * converted almost all special variables to use *FOO* naming convention
7073 * deleted PARSE-TIME functionality, since it can be done portably
7074 * moved some files out of cold init into warm init
7075 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
7077 * regularized formatting of source files
7078 * added an install.sh script
7079 * fixed ridiculous memory usage of cross-compiler by making
7080 compiler/alloc.lisp not try to do pooling unless it can hook
7081 itself into the GC of the cross-compilation host. Now the system
7082 builds nicely on my old laptop.
7083 * added :SB-ALLOC in target-features.lisp-expr
7084 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
7085 was not implemented)
7086 * re-did condition handling and note reporting in the compiler. Notes
7087 are no longer handled by signalling conditions. Style warnings
7088 and warnings are handled more correctly and reported in such a way
7089 that it's easy to find one or the other in your output (so that you
7090 can e.g. figure out which of many problems caused COMPILE-FILE to
7092 * changed the severity of several compiler warnings from full WARNING
7093 to STYLE-WARNING in order to conform with the ANSI spec; also changed
7094 compiler note reporting so that it doesn't use the condition system
7095 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
7096 COMPILE-FILE command)
7097 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
7098 function. As a consequence, START-BLOCK and END-BLOCK declarations are
7099 no longer supported, since their implementation was deeply intertwingled
7100 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
7101 * removed bogus "support" for compiler macros named (SETF FOO), and
7102 removed the compiler macro for SETF INFO (but only after making a fool
7103 of myself on the cmucl-imp mailing list by posting a bogus patch for
7104 DEFINE-COMPILER-MACRO..)
7105 * Compiled files containing forms which have side effects on the Lisp
7106 reader (such as DEFPACKAGE forms) are now handled more correctly.
7107 (Compiler queuing of top level lambdas has been suppressed by setting
7108 *TOP-LEVEL-LAMBDA-MAX* to 0. )
7109 * deleted various currently-unused source files, e.g. gengc.lisp. They
7110 may be added back at some point e.g. when porting to other architectures,
7111 but until they are it's distracting to distribute them and to try to
7113 * deleted "UNCROSS couldn't recurse through.." style warnings, since
7114 there were so many of them they're just distractions, and UNCROSS is
7115 known to be able to handle the current sources
7116 * moved PROFILE functionality into TRACE, so that it will be clear
7117 how the wrapping and unwrapping of functions when you profile them
7118 interacts with the wrapping and unwrapping of functions when you
7119 trace them. (Actually, the functionality isn't there yet, but at least
7120 the interface specification is there. Hopefully, the functionality will
7121 arrive with some future maintenance release.)
7122 * removed host-oops.lisp
7123 * changed signature of QUIT function to allow UNIX-CODE argument
7124 * fixed READ-SEQUENCE bug
7125 * tweaked verbose GC output so that it looks more like the progress
7126 output that ANSI specifies for functions like LOAD
7127 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
7128 * added <http://sbcl.sourceforge.com> to the banner information printed by