1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.1.11:
3 * enhancement: Add sb-bsd-sockets:socket-shutdown, for calling
4 shutdown(3). (thanks to Jan Moringen, lp#1207483)
5 * enhancement: document extensible sequences. (thanks to Jan Moringen,
7 * optimization: EQUAL and EQUALP transforms are smarter.
8 (thanks to Elias Martenson, lp#1220084)
9 * optimization: CHAR-EQUAL is faster for constant and base-char arguments.
10 * bug fix: probe-file now can access symlinks to pipes and sockets in
11 /proc/pid/fd on Linux. (reported by Eric Schulte)
12 * bug fix: SBCL can now be built on Solaris x86-64.
13 * bug fix: Floating point exceptions do not persist on Solaris anymore.
14 * bug fix: (setf . a) is pprinted correctly (reported by Douglas Katzman).
15 * bug fix: handle compiler-error in LOAD when it's not run from inside EVAL.
17 * bug fix: SB-GMP:MPZ-POW no longer segfaults given a non-bignum base.
18 (thanks to Stephan Frank)
19 * bug fix: space allocation of result bignums in SB-GMP is more accurate.
20 (thanks to Stephan Frank, lp#1206191)
22 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
23 * enhancement: support building the manual under texinfo version 5.
25 * enhancement: Windows builds no longer display the "Kitten of Death" message.
26 A warning is instead appended to the regular banner, and may be muted with
27 --noinform. (lp#728247)
28 * enhancement: support building under new linker handling of syscalls under
29 NetBSD. (thanks to Robert Swindells)
30 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
31 (regression since 1.1.9)
32 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
33 compiler macro. (thanks to Douglas Katzman).
34 * bug fix: signal a warning when defining a setf-function when a
35 setf-expander is already present. (thanks to Douglas Katzman).
36 * bug fix: improved threading on PPC.
37 * bug fix: ROOM works again on Windows. (lp#1206456)
38 * bug fix: Streams were flushed even when there was one byte still left in
39 the buffer. (lp#910213)
40 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
41 either NIL or :ERROR. (reported by Jan Moringen)
43 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
44 * enhancement: ASDF has been updated to 3.0.2.
45 * optimization: stack frames are packed more efficiently on x86oids, which
46 ought to reduce the frequency of Methuselahn conservative references (it
47 certainly helps with gc.impure.lisp / BUG-936304 on x86).
48 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
49 recognized in modular arithmetic contexts, and compile to native negate,
50 rather than going through bignums only to keep the low bits.
51 * bug fix: Compiling potential modularic arithmetic forms does not cause type
52 errors when some integer types lack lower or upper bounds. (lp#1199127)
53 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
54 bitwidth before being used in a non-modular context. (lp#1199428)
55 * bug fix: Multiple catch/unwind blocks in a single function are now
56 allocated in the right stack order on win32. (lp#1072739)
58 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
59 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
60 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
61 * enhancement: disassemble now annotates some previously missing static
62 functions, like LENGTH.
63 * enhancement: clean.sh now also cleans doc/internals.
64 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
65 print a symbol with a package prefix.
66 * enhancement: The debugger and backtracing are more robust against buggy
68 * optimization: calls to static functions on x86-64 use less instructions.
69 * optimization: compute encode-universal-time at compile time when possible.
70 * optimization: when referencing internal functions as #'x, don't go through
71 an indirect fdefn structure.
72 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
73 * optimization: (mod fixnum) type-checks are performed using one unsigned
74 comparison, instead of two.
75 * optimization: enable more modular arithmetic transforms in the presence of
77 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
78 when the result is known to be negative.
79 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
80 * optimization: comparisons between rationals and constant floats or between
81 integers and constant ratios are now converted to rationals/integers at
83 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
84 * bug fix: problems with NCONC type derivation (reported by Jerry James).
85 * bug fix: EXPT type derivation no longer constructs bogus floating-point
86 types. (reported by Vsevolod Dyomkin)
87 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
88 addrinfo. (lp#1187041, patch by Jerry James)
89 * bug fix: uninitialized type-error conditions can now be printed.
91 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
92 listening, allowing several tests to run in parallel.
93 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
94 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
96 * bug fix: Specialised SIMD-PACK types can be negated.
97 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
98 reported by Eric Marsden)
99 * bug fix: FP return values from foreign calls are always rounded to single
100 or double float precision on x87.
101 * bug fix: Known-safe vector access on x86oids should not fail spuriously
102 when the index is of the form (+ x constant-positive-integer).
103 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
104 * bug fix: backtrace printer no longer tries to create very large lists when
105 the arg-count register is clobberred by other code. (lp#1192929)
106 * bug fix: x86 should never signal an FP exception while boxing an FP value,
107 a situation that lands us into ldb.
109 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
110 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
111 ROOM, plus a few SB-INTROSPECT functions) has been completely
112 rewritten; it may now exhibit different bugs than before.
113 * new feature: minimal runtime/compiler intrastructure support for SSE
114 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
115 feature :sb-simd-pack. This should enable intrinsics extensions as
116 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
117 for maintaining a branch for so long.
118 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
119 the working directory of the spawned process.
120 (lp#791800) (patch by Matthias Benkard)
121 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
122 stack-allocated on PPC.
123 * enhancement: "fixed objects" can now be stack-allocated on PPC.
124 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
125 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
126 also returns VOPs which do not translate any functions, and finds
127 defoptimizer types ir2convert and stack-allocate-result.
128 * enhancement: better type derivation for APPEND, NCONC, LIST.
130 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
131 heap in a manner similar to the GC rather than its previous ad-hoc
132 scheme, and is therefore no less and possibly more accurate.
133 * fixes and enhancements related to Unicode:
134 ** the character database information has been updated to Unicode 6.2;
135 ** support for canonical and compatibility decomposition of characters has
136 been added, along with support for primary composition;
137 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
138 NFKD) has been included;
139 ** querying the character database for code points not defined by Unicode
140 gives less wrong answers (lp#1178038, reported by Ken Harris)
141 * enhancement: print intermediate evaluation results for some ASSERTed
142 expressions. (lp#789497) (patch by Alexandra Barchunova)
143 * enhancement: x86-64 disassemblies are annotated with unboxed constant
144 values when there are references to (RIP-relative) unboxed constants.
145 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
146 of quadratically with the size of the input in the worst case.
148 * bug fix: handle errors when initializing *default-pathname-defaults*,
149 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
150 decoding errors, or directories being deleted.
151 * bug fix: Loading a core with a discontiguous dynamic space now correctly
152 computes the amount of dynamic space used.
153 * bug fix: disassembler missing ",8" on SHLD
154 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
155 that provide an "invalid" stack frame link for the signal handler
156 itself now use the saved-fp-and-pc mechanism to pick up from the stack
157 frame in the interrupt (signal) context. This is known to affect
158 threaded FreeBSD/x86-64.
159 * bug fix: some LOOP statements couldn't be compiled.
161 * bug fix: sb-sequence:dosequence works on literal vectors.
162 * bug fix: errors in generic arithmetic show the assembly routine's
163 caller on x86 and x86-64. (lp#800343)
164 * bug fix: Compile-time type errors should never result in COMPILE-FILE
166 * bug fix: Known bad local calls do not cause strange failures when
167 emitting or dumping code. (lp#504121)
168 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
169 codegen errors: type checks are inserted as necessary. (lp#1177703)
170 * bug fix: Unsigned modular arithmetic is correctly converted into signed
171 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
172 * bug fix: a combination of inlined local function with &optional and
173 recursion no longer causes undescriptive compiler errors. (lp#1180992)
174 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
175 when testing for non-zero-ness.
176 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
178 * bug fix: Type mismatch for the value of conditional expressions are
179 correctly reported when detected at compile-time, instead of complaining
180 about a constant NIL (similar for non-EQ-comparable catch tags).
181 * bug fix: Referring to INLINE global functions as values should not result
182 in a compilation failure. (lp#1035721)
183 * optimization: faster ISQRT on fixnums and small bignums
184 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
185 * optimization: On x86-64, the number of multi-byte NOP instructions used
186 for code alignment is now always minimal.
187 * optimization: On 64-bit targets, the compiler generates much faster
188 code for type checks for types known at compile time that are smaller
189 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
190 their COMPLEX variants.
191 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
192 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
193 * optimization: ROOM no longer conses so egregiously on non-x86oid
195 * optimization: associative bitwise operations reassociate patterns like
196 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
198 * optimization: quasiquote expressions now perform more constant folding,
199 instead of consing equal lists at runtime. (lp#1026439)
200 * optimization: local call analysis of inlined higher-order function
201 should converge more quickly, resulting in better code for complex
203 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
204 integer constants are handled more cleverly, especially when they
205 can be represented as sign-extended (signed-byte 32). (Based on a
206 patch by Douglas Katzman)
207 * optimization: IF/IF conversion should reliably result in sane code
208 when (some of) the results of the inner IF are always false or
210 * optimization: On x86oids, variable right shifts of machine words are
211 compiled into straight SAR/SHR, instead of going through the generic
214 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
215 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
217 * bug fix: :allocation slot option works for condition slots
219 * bug fix: redefining conditions does not lead to multiple evaluations of
220 hairy slot initfunctions anymore (lp#1164969)
221 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
223 * bug fix: function constants now work as initforms and default initarg
224 values of conditions (lp#539517)
225 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
226 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
227 * bug fix: no more bogus ## references when pretty printing backquoted
228 forms with non-trivial structure sharing. (lp#1161218)
229 * bug fix: Don't signal an error on (setf (documentation nil 'function)
230 "doc"). Signal a style-warning instead when trying to set documentation
231 of NIL for all other documentation types. (Reported by Zach
232 Beane; regression since 2e52fa05.)
233 * bug fix: modular arithmetic involving large constants and conditionals
234 should no longer result in spurious dead code elimination. (Reported by
236 * bug fix: our mach exception handler can seemingly called very early in
237 the program execution process on OS X 10.8.0. Try and handle that case
238 robustly, without potentially leaking mach ports too much.
239 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
241 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
242 * enhancement: the continuable error when defknown-ing over extant
243 fndb entries can be ignored by passing :overwrite-fndb-silently t
244 as a keyword argument to sb-c:defknown (after attributes). Useful
245 to allow defknown to be re-loaded. Use with :allow-other-keys t
246 for backward compatibility.
247 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
249 * bug fix: Prevent a make-array transform from modifying source forms
250 causing problems for inlined code. Thanks to Bart Botta.
251 (regression since 1.0.42.11-bis)
252 * bug fix: clear-output calls the correct gray stream routine,
253 sb-gray:stream-clear-output. (lp#1153257)
254 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
256 * bug fix: Better error messages for package operations (lp#1154776)
257 * bug fix: delete-package on a nonexistent package should signal a cerror.
258 (regression since 1.0.37.44).
259 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
260 (lp#1154946, lp#1072112)
261 * bug fix: compiling make-array no longer signals an error when the
262 element-type is an uknown type, a warning is issued instead.
263 Thanks to James Kalenius (lp#1156095)
264 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
265 produces wrong results for some inputs. (Thanks to Jan Moringen.)
268 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
269 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
271 * new feature: package local nicknames. See manual for details.
272 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
273 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
274 * enhancement: easier to use restarts for resolving name-conflicts
275 resulting from IMPORT, EXPORT, or USE-PACKAGE.
276 * enhancement: variant DEFPACKAGE forms now signal a full error with
277 restarts provided for resolving the situation. (lp#891351)
278 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
279 DEFPACKAGE forms can now signal a full error with restarts provided for
280 resolving the situation. See manual for details. (lp#891351)
281 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
282 (Thanks to Anton Kovalenko.) (lp#1102748)
283 * enhancement: backtrace improvements
284 ** secondary CLOS dispatch functions have better debug names (lp#503081)
285 ** easier to read method names in backtraces. See
286 SB-DEBUG:*METHOD-FRAME-STYLE*.
287 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
288 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
289 SB-DEBUG:BACKTRACE-AS-LIST.
290 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
291 information is available in less intrusive form as frame annotations.
292 * enhancement: SB-POSIX now provides MAP-ANON.
293 * enhancement: test-suite results are colorized, failures in red, unexpected
294 success in green. Works on Windows and on terminals with ANSI escape code
295 support. Can be disabled with --no-color.
296 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
297 (thanks to James M. Lawrence)
298 * bug fix: no more unused variable style warnings from RESTART-CASE
299 macroexpansion (lp#1113859)
300 * bug fix: no more unused variable style warnings when loading
301 sb-bsd-sockets.asd (lp#1114681)
302 * bug fix: deleting a package removes it from implementation-package
303 lists of other packages.
304 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
305 This does not fix the occasional "interrupt already pending" issue, though.
306 * bug fix: (setf (documentation 'x 'function)) and
307 (setf (documentation #'x t)) set documentation in different places.
308 (regression since 1.0.43.63)
309 * bug fix: build on newer glibc. (lp#1095036)
311 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
312 * optimization: LOOP expressions using "of-type character" have slightly
313 more efficient expansions.
314 * bug fix: very long (or infinite) constant lists in DOLIST do not result
315 in very long compile times or heap exhaustion anymore. (lp#1095488)
316 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
317 * bug fix: adjust-array ignored :initial-element for simple-vectors.
319 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
320 longer cause infinite loops (on circular data) or violate eqlity
321 constraints. (lp#1099708)
322 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
324 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
325 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
327 * enhancement: support for C-c to interrupt the foreground thread
328 on Windows. (Thanks to Anton Kovalenko.)
329 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
330 * enhancement: Safepoint builds on POSIX platforms can now optionally be
331 built without pseudo-atomic sequences and their run-time overhead.
332 * enhancement: Threads created outside of Lisp can enter Lisp through
333 alien callbacks and appear as Lisp threads for the duration of that
334 function invocation. On safepoint builds only.
335 * enhancement: Miscellaneous improvements to namestrings and underlying
336 calls to OS functions for file system access on Windows. (Thanks to
338 * enhancement: The MSI installer support for Windows now uses Windows
339 Installer XML at least version 3.5 and includes various usability
340 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
341 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
342 on Windows. (Thanks to Anton Kovalenko.)
343 * enhancement: The Windows backend now supports the x86-64 platform.
344 (Thanks to Anton Kovalenko.)
345 * bug fix: fasls are now once again directly executable (on platforms
346 supporting shebang lines, with a suitably-installed sbcl).
347 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
348 * bug fix: Fix CAS access to slots of direct instances of structure classes
349 in the presence of subclasses sharing the same conc-name.
350 * bug fix: Logical pathname namestrings on Windows have been changed to
351 be lower-case, to minimize differences between POSIX and Windows.
353 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
354 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
355 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
356 (NT 5.0) is no longer being maintained.
357 * notice: Starting with this version, SBCL on Windows no longer supports
358 building with disabled thread support.
359 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
360 * enhancement: New feature sb-dynamic-core allows the runtime to be
361 rebuilt or relocated without requiring changes to the core file on
362 all linkage table platforms. Required on Windows. (Thanks to Anton
364 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
365 * enhancement: I/O on Windows unnamed pipes is interruptible
366 asynchronously using interrupt-thread, timers when running on Windows NT
367 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
369 * enhancement: Support for the experimental safepoint-based stop-the-world
370 protocol on the PowerPC platform.
371 * bug fix: Non-blocking reads from the Windows console were not necessarily
372 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
373 * bug fix: stability of threads on Windows has been improved upon through
374 an updated stop-the-world protocol (thanks to Anton Kovalenko).
376 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
377 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
378 (COMPILE and COMPILE-FILE still do.)
379 * optimization: the SPARC backend now supports the precise generational
380 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
381 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
382 * enhancement: add experimental support for the SB-THREAD feature and the
383 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
384 Threads are enabled by default, and this version of SBCL is considered
385 to be the last and final release to officially support building with
387 * optimization: The compiler no longer rotates loops in some cases where
388 this transformation actually lead to worse code being generated.
389 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
390 symbol-macros by lexical bindings.
391 * bug fix: stack allocation was prevented by high DEBUG declaration in
393 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
394 (thanks to SANO Masatoshi)
395 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
396 :JUNK-ALLOWED was true.
397 * bug fix: type derivation inferred overly conservative types for
398 unions of array types. (lp#1050768)
400 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
401 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
402 source annotation of DISASSEMBLE output. Defaults to T.
403 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
404 WAIT-P argument added to WITH-RECURSIVE-LOCK.
405 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
407 * enhancement: Optional features (not enabled by default) allow the
408 use of signals for inter-thread synchronization to be reduced on certain
409 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
410 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
411 to test these experimental features. Known remaining bugs include minor
412 thread safety issues, less timely freeing of memory by GC, and certain
413 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
414 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
415 comparisons, particularly on almost-sorted inputs.
416 * bug fix: Reading floats with large exponents no longer takes too much time
417 before reporting that the exponent is too large.
418 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
419 correctly when the received datagram is larger than the provided buffer.
420 (lp#1023438, thanks to Robert Uhl)
421 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
422 a SYMBOL-VALUE form with a constant symbol argument.
423 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
424 into a DEFCAS defined place was used as the place.
425 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
426 for from bit-vectors.
427 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
428 lead to internal errors or crashes (lp#1058799).
429 * documentation: a section on random number generation has been added to the
432 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
433 * enhancement: implicit generic function warnings now specify the package
434 in which the new generic function is being created.
435 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
436 updates of CAS-able places (similar to Clojure's swap!).
437 * enhancement: run-program no longer decodes and re-encodes environment when
438 :environment argument is not provided. (lp#985904)
439 * enhancement: errors during compiler-macro expansion no longer cause
440 runtime errors, only a compile-time warning, otherwise behaving as if
441 the compiler macro had declined to expand.
442 * optimization: On x86-64, code alignment of block headers is done with
443 multi-byte NOPs now instead of repetitions of the single-byte NOP.
444 * optimization: MAP-INTO is substantially faster when the target sequence is
445 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
446 thanks to James M. Lawrence)
447 * optimization: the compiler no longer heap-conses to check exits in cases
448 where the exit function is dynamic extent, or when it can prove the exit
449 function cannot escape. (lp#1002534)
450 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
451 element type, and vectors that aren't SIMPLE-ARRAYs.
452 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
453 speed (around 1/3 the time in some cases), and a little better in terms of
454 comparison calls. (Thanks to Takeru Ohta)
455 * bug fix: On SPARC, a limitation on the number of code constants emittable
456 by the compiler has been lifted, allowing certain long functions to
457 compiled and assembled which had previously been unsupported; fixes
458 cl-bench on this ISA (lp#1008996).
459 * bug fix: potential for infinite recursion during compilation of CLOS slot
460 typechecks when dependency graph had loops. (lp#1001799)
461 * bug fix: error forms reported with some program-errors were not escaped
463 * bug fix: functions from EVAL are now on more equal footing with functions
464 from COMPILE. (lp#1000783, lp#851170, lp#922408)
465 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
466 objects as its :METHOD-COMBINATION argument, not just lists designating
467 method combinations. (lp#936513)
468 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
470 * bug fix: restore build on solaris/sparc. (lp#1008506)
471 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
472 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
473 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
474 as keyword arguments no longer accidentally match unevaluated symbols
476 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
477 parameter was zero, now it signals an error. (lp#905817, fixed since
479 * bug fix: run-program with :pty t no longer makes the pty as the process's
481 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
484 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
485 * RANDOM enhancements and bug fixes:
486 ** bug fix: the range and distribution of random integers could be
487 catastrophically wrong when the compiler derived the type of its
488 argument as a disjoint set of small integers.
489 ** bug fix: the distribution of random integers is now completely
490 uniform even when the specified limit is not a power of two.
491 (Previously some values could be about 0.1 % more probable than
492 others in the worst case.) (lp#309467)
493 ** RANDOM on large integer arguments is generally faster and conses
494 less than before; this is visible for fixnums above a length of
495 about 24 bits, but extremely so for bignums: the old implementation
496 used time and space quadratical in the size of the argument there,
497 the new one is linear.
498 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
499 main entry point, SB-EXT:QUIT is deprecated.
500 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
501 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
502 * enhancement: FASL loading no longer grabs the world-lock.
503 * enhancement: GENCGC reclaims space more aggressively when objects being
504 allocated are a large fraction of the total available heap space.
506 * enhancement: backtraces show the correct number of arguments for frames
507 called with too many arguments.
508 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
510 * enhancement: ASDF has been updated 2.21.
511 * optimization: fewer uses of full calls to signed modular functions.
513 * optimization: typechecking alien values is typically 5 x faster.
514 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
516 * bug fix: file compilation performance issues when dumping subtypes
517 of CHARACTER (lp#994487)
518 * bug fix: fixed disassembly of some SSE instructions on x86-64.
519 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
520 OPEN. (lp#969352, thanks to Kambiz Darabi)
521 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
523 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
524 classoid even if X was not the proper name of the class. (lp#941102)
525 * bug fix: declaration leakage between lexical environments due to careless
526 use of NCONC in MAKE-LEXENV. (lp#924276)
527 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
528 *default-pathname-defaults* contains NAME or TYPE components.
529 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
530 from CL package, e.g. (loop . 10).
531 * bug fix: run-program with existent or non-existent files for :output or
532 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
533 returns NIL instead of signalling an obscure error.
534 * bug fix: fix miscompilation of some logand forms with large constant
535 arguments. (lp#974406)
536 * bug fix: account for funcallable-instance objects properly in ROOM.
537 * bug fix: incorrect octets reported for c-string decoding errors.
539 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
541 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
542 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
543 allowing faster release of memory back to the OS. (lp#991293)
544 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
545 existing deadline for the dynamic scope of its body.
546 * bug fix: compiler-internal interval arithmetic needed to be more
547 conservative about open intervals when operated on by monotonic but not
548 strictly-monotonic functions. (lp#975528)
549 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
550 it's also slightly faster. (lp#998926)
551 * bug fix: better error messages for malformed declarations.
553 * bug fix: define-condition didn't return the name of the defined condition.
555 ** improved docstrings: REPLACE (lp#965592)
557 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
558 * bug fix: fix copy-structure. When copying from stack to heap, garbage
559 could end up in the heap making GC unhappy.
560 (Thanks to James Knight, lp#911027)
562 ** SBCL can now be built using Clang.
563 ** ASDF has been updated 2.20.
564 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
565 * bug fix: don't complain about a too-hairy lexical environment for inlining
566 when the function has never been requested for inlining. (lp#963530)
568 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
569 * enhancements to building SBCL using make.sh:
570 ** --fancy can be specified to enable all supported feature enhancements.
571 ** --with-<feature> and --without-<feature> can be used to specify
572 which features to build with.
573 ** --arch option can be used to specify the architecture to build for.
574 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
575 full-blows cross-compilation.)
576 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
577 which allows specifying name of the default interning package for the
579 * enhancement: when *READ-EVAL* is true, arrays with element type other than
580 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
581 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
582 null alien when malloc() fails. (lp#891268)
583 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
584 conditions can be conveniently accessed through function with the same
585 name, analogously to CONTINUE.
586 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
587 from the printer by type, causing an error marker to be printed instead.
588 (Thanks to Attila Lendvai)
589 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
590 generally behave better when errors occur during printing.
591 * enhancement: the test runner now takes a --report-skipped-tests argument
592 to report the individual tests skipped as well as the number of skipped
594 * enhancement: undefined functions now appear in backtraces as ("undefined
595 function") instead of ("bogus stack frame") on x86oids.
596 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
597 deadlock errors are reported in an easier-to-decipher manner.
598 * enhancement: DESCRIBE on type designators reports the expansion in more
600 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
601 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
602 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
603 * enhancement: better disassembly of segment-prefixes on x86 and other
604 instruction prefixes (e.g. LOCK) on x86 and x86-64.
605 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
606 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
607 * optimization: SUBSEQ on vectors of unknown element type is substantially
609 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
610 be stack-allocated. (lp#902351)
611 * optimization: the compiler is smarter about representation selection for
612 floating point constants used in full calls.
613 * optimization: the compiler no longer refuses to coerce large fixnums to
614 single floats inline, except on x86 where this limitation is still
616 * optimization: truncation operations on integers with constant divisor
617 arguments 1 and -1 are optimized away.
618 * bug fix: deadlock detection could report the same deadlock twice, for
619 two different threads. Now a single deadlock is reported exactly once.
620 * bug fix: interval-arithmetic division during type derivation did not
621 account for signed zeros.
622 * bug fix: compiler error when typechecking a call to a function with
623 non-constant keyword arguments.
624 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
625 * bug fix: condition slot accessors no longer cause undefined function
626 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
627 form that defines them. (lp#896379)
628 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
630 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
631 bogusly report NIL, T.
632 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
633 required arguments ignored and performed assignments to others.
635 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
636 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
637 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
638 * bug fix: redefining a function whose previous definition contained an
639 unknown type no longer causes a style-warning. (lp#806243)
640 * bug fix: undefined functions now appear in backtraces as ("undefined
641 function") instead of ("bogus stack frame") on non-x86oids.
642 * bug fix: backtraces are no longer cut off at ("undefined function") when
643 called under certain circumstances (involving a caller-allocated stack
645 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
646 systems. (regression since 1.0.53)
647 * bug fix: GC deadlocks from dladdr() on certain platforms.
648 * bug fix: broken standard streams no longer automatically cause recursive
649 errors on debugger entry.
650 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
651 (regression since 1.0.53)
652 * bug fix: attempts to stack allocate a required argument to a function with
653 an external entry point caused compiler-errors.
654 * bug fix: compiler notes for failed stack allocation for a function argument
655 no longer claim to be unable to stack allocate the function.
656 * bug fix: COERCE now signals a type-error on several coercions to
657 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
658 * bug fix: missing failure-to-stack-allocate compiler notes for some
659 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
660 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
662 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
664 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
665 * minor incompatible changes:
666 ** RENAME-FILE on a symbolic links used to rename the linked-to file
668 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
669 directory, but now signal an error instead. Use TRUENAME to resolve the
670 pathname if you wish to delete the linked directory, and DELETE-FILE if
671 you wish to delete the
672 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
673 symbols associated with it will trigger a compile-time warning.
674 * thread-related enhancements:
675 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
676 Many thanks to generous donors!)
677 ** Threading is now more reliable on non-Linux platforms. We still don't
678 consider threads on non-Linux platforms good enough to enable them by
679 default, but they're in a clearly better shape now.
680 ** Deadlines supported now on all platforms.
681 ** All blocking functions in the threading API now have a :TIMEOUT
683 ** Semaphore notification objects have been added to SB-THREAD.
684 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
685 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
686 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
687 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
688 using an API anologous to defining new SETFable places.
689 * GC-related enhancements and bug fixes:
690 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
691 and Gb suffixes. Default is megabytes as before.
692 ** on GENCGC targets, the default dynamic space size is now 512Mb for
693 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
694 exception, defaulting to mere 444Mb to fit under default ulimits.) The
695 new defaults are in place to prevent hitting swap on low-end systems.
696 Use build-time option --dynamic-space-size to build an SBCL with
697 another default, or the runtime option to adjust the size at startup: a
698 good size is at most equal to the amount of physical memory the system
700 ** on GENCGC targets, nursery and generation sizes now default to 5% of
702 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
703 refuses to create SIMPLE-FUN objects.
704 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
706 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
707 validation of pointer objects as GENCGC does, instead of a
708 comparatively weak bounds-check against the heap spaces.
709 * SB-BSD-SOCKETS bug fixes:
710 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
711 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
712 systems with getaddrinfo().
713 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
714 safe outside systems with getaddrinfo().
715 * enhancement: ASDF has been updated 2.019.
716 * enhancement: special-case TCO prevention for functions which never return
717 extended to untrusted types, keeping one more frame's worth of debug
718 information around in many cases.
719 * enhancement: debug-names of anonymous and local function are more
720 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
721 * enhancement: on win32, ABS of complex floats guards better against
722 overflows. (lp#888410)
723 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
724 process exiting with code 1. (lp#676987)
725 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
726 the system where on the filesystem the SBCL sources themselves are
727 located. (Thanks to Zach Beane)
728 * enhancement: the compiler is now able to derive tighter bounds for
729 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
730 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
731 correctly, even on wide-fixnum builds. (lp#887220)
732 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
733 resolved to directories.
734 * bug fix: type mismatch when assigning to lexical variables no longer
735 result in fasl-dumping internal type objects. (lp#890750)
736 * bug fix: type mismatch on (SETF AREF) and function return values no
737 longer result in fasl-dumping internal type objects.
738 * bug fix: With several combinations of argument types, for example (EXPT
739 <integer> <(complex double)>), EXPT now uses double-precision throughout
740 instead of partially calculating only to single-precision. (lp#741564;
741 thanks to Lutz Euler)
742 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
743 objects when interrupted by GC on PPC.
745 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
746 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
747 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
748 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
749 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
750 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
751 targets is now 63 bits (up from 61).
752 * enhancement: DESCRIBE now reports a lambda-list and source location
753 for complext setf-expanders.
754 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
755 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
756 of multiple-valued places to be set to NIL, instead of signalling an
757 error (per a careful reading of CLHS 5.1.2.3).
758 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
759 * bug fix: repair crash in x86oid darwin signal handling emulation
760 when built with certain compilers.
761 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
762 rotation arguments on x86-64. (lp#882151)
763 * bug fix: low-level control flow optimisations could result in bogus
764 code in functions with tail and non-tail calls to local functions on
766 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
767 to emit literal characters > (code-char 4095), for comparisons with
769 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
770 on 64 bit platforms. (lp#881445)
771 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
772 delete the wrong file when using relative pathnames. (lp#882877)
773 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
774 sequences and :KEY NIL.
776 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
777 * enhancement: ASDF has been updated to version 2.017.
778 * enhancement: the --core command line option now accepts binaries with
780 * enhancement: when built with :sb-core-compression, core files (regular
781 or executable) can be compressed with zlib. Use the :COMPRESSION
782 argument to SAVE-LISP-AND-DIE to specify a compression level.
783 * enhancement: --[no-]merge-core-pages determines whether the runtime
784 hints the operating system that identical core pages between SBCL
785 processes should share the same physical memory. Default is to only
786 enable this for compressed cores.
787 * optimization: SLEEP no longer conses.
788 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
789 or bit-vectors when using the standard pretty-print dispatch table.
790 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
792 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
793 AREF, CHAR, etc. (lp#826971)
794 * bug fix: compiler-errors causes by integer arguments with composed of
795 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
796 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
797 expressions. (lp#770184)
798 * bug fix: complex single float literals are correctly aligned when used
799 as arguments of arithmetic operators.
800 * bug fix: on 32-bit platforms, rounding of double floats larger than a
801 fixnum is correct. (reported by Peter Keller)
802 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
803 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
805 * bug fix: redefining classes such that slots with custom allocation are
806 added or removed works again.
808 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
809 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
810 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
811 MAKE-SOCKET-STREAM if using SERVE-EVENT.
812 * enhancement: added support for socket keepalive timeout intervals
813 and probe counts on Linux.
814 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
815 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
816 * enhancement: added new toplevel options --quit and --non-interactive
818 * enhancement: the Windows port of SBCL now builds and runs on Wine
819 (thanks to Anton Kovalenko).
820 * enhancement: more, and more correct, SSE instruction definitions on
821 x86-64 (thanks to Alexander Gavrilov).
822 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
823 to help the processor execute spin loops, when applicable. Currently
824 implemented for x86 and x86-64.
825 * optimization: unsigned integer divisions by a constant are implemented
826 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
827 * optimization: improved type-derivation for LOAD-TIME-VALUE.
828 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
829 instructions. (lp#814688)
830 * bug fix: COERCE to unfinalized extended sequence classes now works.
831 (reported by Jan Moringen; lp#815155)
832 * bug fix: a compiler error during typecheck generation, reported by Eric
834 * bug fix: obsolete instance protocol fires when shared slots are added
836 * bug fix: fixed-format floating point printing with scaling factors.
838 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
839 backtraces. (lp#818460)
840 * bug fix: better backtraces for interrupted syscall frames on x86.
842 * bug fix: SSE comparison instructions can be disassembled even when one
843 operand is in memory. (lp#814702)
844 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
845 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
846 type information associated with the VALUES form.
847 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
849 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
850 first write (lp#561642).
851 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
852 * bug fix: bound propagation involving conversion of large bignums to
853 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
855 * bug fix: &REST to &MORE conversion still works in unsafe call to known
856 functions; reported by Lutz Euler (lp#826459).
857 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
860 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
861 * enhancement: errors from FD handlers now provide a restart to remove
862 the offending handler.
863 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
865 * enhancement: location of user or system initialization file can now easily
866 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
867 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
868 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
869 the thunk, as a keyword argument, :arguments.
870 * enhancement: constraint propagation is simplified (and sped up) when
871 COMPILATION-SPEED > SPEED.
872 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
873 * enhancement: debugger understands &MORE arguments better.
874 * optimization: extracting bits of a single-float on x86-64 has been
875 optimized. (lp#555201)
876 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
877 when (> SPEED SPACE).
878 * optimization: local call trampolines (x86 and x86-64) are emitted
880 * optimization: implicit value cells for dynamic-extent closed-over bindings
881 on x86 and x86-64 can hold unboxed values as well.
882 * meta-optimization: improved compilation speed, especially for large
883 functions. (lp#792363 and lp#394206)
884 * bug fix: bound derivation for floating point operations is now more
885 careful about rounding possibly closing open bounds. (lp#793771)
886 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
887 backwards incompatible change in 1.0.48.27)
888 * bug fix: occasional debugger errors in when a type-error occured in a
889 function with dynamic-extent &rest list.
890 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
891 boa-construtors can be used to initialized structure slots.
892 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
893 (lp#795705, regression)
894 * bug fix: DIRECTORY works better on logical pathnames.
895 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
896 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
897 * bug fix: the compiler no longer constant-folds NaNs in
898 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
899 * bug fix: FORMAT now handles floating point rounding correct, eg.
900 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
902 * bug fix: style warning during lambda-list introspection of generic
903 functions with both optional and key argments.
904 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
906 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
909 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
910 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
911 interrupts for its body.
912 * enhancement: source locations are now available for files loaded as
913 source, compile-time-too evaluation, and initialization files.
914 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
915 virtual source-file information, eg. overriding input-file of COMPILE-FILE
916 when a temporary file is used for compilation.
917 * enhancement: ASDF has been updated to version 2.015.3.
918 * enhancement: backtraces involving frames from the default evaluator are
920 * enhancement: RUN-PROGRAM works with user-defined binary input and output
922 * enhancement: more informative compile-time warnings and runtime errors for
923 type-errors detected at compile-time.
924 * enhancement: deadlock detection for mutexes and spinlocks.
925 * enhancement: dynamic-extent for &rest lists stack allocate only their
926 spines, not their argumets. While portable code should not rely on this,
927 particularly in combination with inlining, it should make dynamic-extent
928 easier to use safely.
929 * enhancement: SB-POSIX improvements:
930 ** WNOHANG and WUNTRACED are exported.
931 ** SYSCALL-ERROR now also provides the name of the failing system call.
932 * enhancement: --script improvements:
933 ** errors on standard input, output, and error streams are handled and
934 cause scripts to exit silently, making them easier to use in shell
936 ** backtraces from scripts now go to standard error instead of the
937 terminal even if one is available.
938 ** --script can be an argument, causing the script to be loaded from
940 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
941 strings to foreign memory.
942 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
943 a file, making it easier to understand heap dynamics.
944 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
945 allows the compiler to automatically elide rest-list allocation so long as
946 the call sites are in functions that the compiler knows cannot escape.
948 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
949 especially in safe code when none of the required arguments have changed
951 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
952 uninterruptible, as well as blocking reads from socket streams created
953 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
954 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
955 from the to-char if the from-char is not a dispatch-macro character.
956 * bug fix: references to undefined variables in function calls that are
957 optimized away now signal a runtime error. (lp#722734)
958 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
959 types from a function defined in the same file. (regression from
961 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
963 * bug fix: spurious errors during QUIT when standard streams were closed.
965 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
966 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
967 years, is now no longer supported.
968 * enhancement: read() and write() have been added to SB-POSIX.
969 * enhancement: types of DEFSTRUCT constructors are proclaimed more
970 accurately, allowing better typechecking of call-sites.
971 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
972 are no longer caught. (reverted to pre 1.0.34 behaviour)
973 * optimization: slightly faster ISQRT. (lp#713343)
974 * bug fix: better support for Solaris /bin/sh in sh-based tests.
975 * bug fix: TRACE behaves better when attempting to trace undefined
976 functions. (lp#740717)
977 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
978 to (FUNCALL #'(LAMBDA ...) ...).
979 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
980 a compile-time error. (lp#720382)
981 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
983 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
984 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
985 optimization. (regression from 1.0.45.18/1.0.46.15)
986 * bug fix: package locks did not protects against compile-time side-effects
987 of DEFUN. (lp#675584)
988 * bug fix: --dynamic-space-size argument is validated more carefully.
990 * bug fix: memory fault from printing a malformed simple-condition.
992 * bug fix: redefining classes so that slot-definition classes change now
993 engages the obsolete instance protocol. (lp#766271)
994 * bug fix: constant improper lists could break source coverage recording.
996 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
999 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
1000 * bug fix: fix mach port rights leaks in mach exception handling code on
1001 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
1003 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
1004 * enhancement: redefinition warnings for macros from different files. (lp#434657)
1005 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
1006 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
1007 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
1008 processed using EVAL -- now the appropriate toplevel form is reported instead.
1009 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
1010 declarations. (lp#726331)
1011 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
1012 that NIL/NULL is excluded from the type.
1013 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
1015 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
1016 and its compatriots.
1017 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
1018 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
1019 stack-allocated values out of their dynamic-extent. (lp#310175)
1020 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
1021 x86-64 builds caused a type-error.
1022 * bug fix: calling COMPILE with something else than a lambda-expression as the
1023 second argument reports a more sensible error. (lp#718905)
1024 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
1025 are detected. (lp#520607)
1026 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
1028 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
1029 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
1030 methods. (regression from 1.0.45.18)
1031 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
1032 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
1033 * bug fix: several foreign functions accepting string also accepted NIL and
1034 consequently caused a memory fault at 0 now signal a type-error instead.
1036 * bug fix: under rare circumstances, constraint propagation could rewrite a
1037 variable reference to refer to a variable not in scope, causing an error
1038 during physical environment analysis when attempting to close over the
1039 variable. (lp#551227)
1040 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
1042 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
1043 * enhancement: largefile support on Solaris.
1044 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
1045 arguments (lp#710017)
1046 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
1047 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
1049 * optimization: ERROR and CERROR are approximately 5 times faster.
1050 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
1051 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
1052 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
1053 up instance creation in those cases.
1054 * optimization: arithmetic operations with multiple constant arguments in now
1055 have them reduced at compile-time. (lp#676414)
1056 * optimization: determining current character position on string-streams for
1057 pretty-printing was overly slow.
1058 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
1059 lifetime analysis to overwrite closed-over variables (lp#681092).
1060 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
1061 were not handled correctly (lp#713063).
1062 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
1064 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
1065 mistake. (lp#667297).
1066 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
1067 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
1068 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
1069 unintern the wrong symbol with the same name. (lp#693796)
1070 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
1071 making it possible to restore the initial table if it has been messed up.
1074 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
1075 * enhancement: ~/ and ~user/ are treated specially in pathnames.
1076 Refer to documentation for details.
1077 * enhancement: ASDF has been updated to version 2.010.
1078 * optimization: mutated closed-over variables that are only accessed by
1079 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
1080 declared to be DYNAMIC-EXTENT) are stored directly in their containing
1081 stack frame, rather than allocating a VALUE-CELL (lp#586103).
1082 * optimization: UNWIND-PROTECT cleanup functions are now declared
1084 * bug fix: backtracing function with &REST arguments now shows the full
1085 argument list. (lp#310173)
1086 * bug fix: return types for functions with complex lambda-lists are now
1087 derived properly (lp#384892)
1088 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
1089 long string arguments slowed the compiler down to a crawl.
1090 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
1091 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
1092 in the DEFMETHOD body.
1093 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
1094 messages, being instead replaced with the corresponding function name.
1095 * bug fix: don't derive overly complex unions of numeric types for arithmetic
1096 operators. (lp#309448)
1098 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
1099 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
1100 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
1101 * enhancement: ALLOCATION-INFORMATION also provides the page the object
1103 * enhancement: default dynamic-space size can be configured at build-time
1104 without touching source, using the --dynamic-space-size argument to make.sh.
1105 * enhancement: DESCRIBE recognizes symbols naming optimization policy
1106 qualities, and mentions ALWAYS-BOUND declarations.
1107 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
1109 * enhancement: ASDF has been updated to 2.009.
1110 * enhancement: the system detects known type-erros in calls better,
1111 signalling a full warning about violated proclaimed FTYPEs and violations
1112 of derived FTYPEs within the same file, including self-calls.
1113 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
1114 * optimization: constant-folding exploits numeric and character types, in
1115 addition member types.
1116 * optimization: numeric, character and member types that are inhabited by
1117 exactly one value are tested with EQL.
1118 * optimization: more conditional branches are eliminated during IR1.
1119 Branches are simplified before performing if/if-conversion, and simple
1120 equivalent branches (that only read the same constant or variable) are
1122 * improvements to the Windows port:
1123 ** change: canonical unparsing form for pathname namestrings now uses / as
1124 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
1125 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
1126 on Windows. (thanks to Kalyanov Dmitry)
1127 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
1129 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
1130 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
1131 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
1132 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
1134 * bug fix: interrupts arriving during CL:OPEN caused an error.
1135 * bug fix: overeager character buffering could cause input to block
1136 spuriously when reading from a pipe (lp#643686)
1137 * bug fix: more efficient timer expiry should avoid starvation on systems
1138 where number of SIGALRMs per second is restricted. (lp#375515)
1139 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
1140 * bug fix: compile-times no longer scale linearly with the size of
1141 quoted lists in source-code. (lp#654289)
1142 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
1143 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
1144 so badly. (lp#654485)
1145 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
1146 an error for eg. STRUCTURE. (lp#458015)
1147 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
1148 (lp#613871, thanks to Roman Marynchak)
1149 * bug fix: more reliable &REST list type derivation. (lp#655203)
1150 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
1151 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
1152 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
1153 also declared NOTINLINE. (lp#655581)
1154 * bug fix: the compiler could attempt to emit constant left shifts of
1155 greater value than n-word-bits. (lp#309063)
1156 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
1157 type information for the function being set. (lp#659220)
1158 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
1159 containing self-calls were recompiled with a new signature, and failed
1160 to warn when a self-call using the old signature was left in. (lp#655126)
1161 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
1162 :DEFAULT when the default external had character size other than 8 bits.
1164 * bug fix: derived types of functions in the same file were implicitly
1165 trusted, leading to potential heap corruption when those function were
1166 defined incompatibly. (lp#657499)
1167 * bug fix: existing ASDF source registries are ignored when building
1168 contribs (lp#659105)
1169 * bug fix: short-form DEFSETF checks that the second argument is a symbol
1170 (lp#655824, thanks to Roman Marynchak)
1171 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
1172 package-lock violation was detected. (lp#660752)
1173 * bug fix: the system can store different docstrings for a single function
1174 under different names. (lp#661631, regression from 1.0.29.24)
1175 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
1176 properly. (lp#384801)
1177 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
1178 of specified length could confuse the type derivation in unsafe code.
1180 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1181 fork with multiple Lisp threads running is made on every platform,
1182 not just Darwin. (lp#451111)
1183 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1184 around when core was saved, which could cause undefined behaviour when the
1186 * bug fix: Allow UNTRACE of functions that are no longer defined
1187 (lp#667657, thanks to Attila Lendvai)
1188 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1189 compile-time warning (lp#664373, thanks to Stas Boukarev)
1191 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1192 * incompatible change: FD-STREAMS no longer participate in the serve-event
1193 event-loop by default. (lp#316072)
1194 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1195 affects streams from CL:OPEN.
1196 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1197 default, but this is liable to change: applications needing serve-event
1198 for socket streams should explicitly request it using :SERVE-EVENTS T
1200 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1202 * enhancement: CLOS effective method functions and defclass slot typechecking
1203 function now have debug names for use in backtraces and profiles.
1204 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1206 * enhancement: symbols are printed using fully qualified names in several
1207 error and warning messages which are often associated with package
1208 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1209 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1210 thanks to Andrew Golding)
1211 * bug fix: reading /proc files on Linux works. (lp#425199)
1212 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1214 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1215 breaking code that tried to write the value of a printer control variable.
1216 (lp#581564, thanks to Stas Boukarev)
1217 * bug fix: WRITE compiler macro did not handle output stream designators
1218 correctly. (lp#598374, thanks to Stas Boukarev)
1219 * bug fix: better availability of names of foreign functions in backtraces
1220 on Linux. (lp#626962, thanks to Stas Boukarev)
1221 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1222 lp#627581, thanks to Josh Elsasser and Jim Wise)
1223 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1224 thanks to Josh Elsasser)
1225 * bug fix: using aliases for builtin classes as defmethod specializers
1226 without adding DEFTYPEs for them works. (lp#618387)
1227 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1229 * bug fix: legally dynamic-extent lists and vectors used as
1230 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1231 * bug fix: inline-expansion creating references to dead lambda-variables
1232 (lp#454681, thanks to Alexey Dejneka)
1233 * bug fix: better error message for bogus numerical arguments to RANDOM.
1234 (lp#598986, thanks to Stas Boukarev)
1235 * bug fix: the compiler occasionally inlined references from incompatible
1236 environments occurs. (lp#308951)
1237 * bug fix: the compiler threw an error when trying to compile a local
1238 function (labels or flet) known to take a specialized complex argument.
1239 (not in launchpad, reported by sykopomp in #lispgames)
1240 * bug fix: package-locks failed to protect against compile-time effects of
1241 DEFUN when the symbol previously had a macro definition. (lp#576637)
1242 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1243 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1244 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1245 * bug fix: evaluation in debugger REPL works using the global context when
1246 in frames that do not have sufficient debug information.
1247 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1249 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1251 * bug fix: interrupt taking longer than the requested period caused SLEEP
1252 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1254 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1256 ** Cross-compilation host is now specified to make.sh using
1257 command-line argument --xc-host=<command> instead of a positional
1258 argument. (thanks to Daniel Herring)
1259 ** Install location can be specified to make.sh using command-line
1260 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1261 * optimization: The default implementation of
1262 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1263 * enhancement: Explicit memory barrier operations are now available for use
1264 by multithreaded code. See documentation for details.
1265 * enhancement: Experimental support for threading on Linux/PPC.
1266 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1267 * bug fix: EXPT signals an error if first argument is a zero and second
1268 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1269 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1270 (lp#576594, thanks to Roman Marynchak)
1271 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1272 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1274 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1275 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1276 cached, leading to many fewer expensive calls to
1277 COMPUTE-APPLICABLE-METHODS.
1278 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1279 CLASS argument, search for and call an appropriate optimized ctor function
1281 * bug fix: WRITE always returns the correct value.
1283 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1284 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1285 * bug fix: Name conflicts between symbols passed as arguments to a single
1286 call to IMPORT no longer add multiple symbols with the same name to the
1287 package (detectable via DO-SYMBOLS).
1288 * bug fix: support building without the dlshim on darwin x86 and x86-64
1290 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1292 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1293 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1295 * bug fix: linkage-table entries on PPC now no longer overflow their
1296 space allocation (potentially causing crashes if they are written out
1298 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1299 platforms, preventing the GC from seeing stale pointers on the control
1300 stack in subsequent GCs (which would, and does, break invariants).
1301 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1302 * bug fix: Literal characters with code points greater than about 32767
1303 now work on PPC UNICODE builds.
1304 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1305 high order bits are explicitly cleared out. In some contrived situations,
1306 this could lead to wrong results in mixed real/complex float arithmetic.
1307 * bug fix: Fix function/macro redefinition warnings when building with
1308 clisp. (lp#576787, thanks to Josh Elsasser)
1309 * new platform: experimental support for ppc/openbsd (thanks to Josh
1311 * bug fix: Floating-point traps now work on ppc/linux.
1313 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1314 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1315 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1316 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1317 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1318 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1319 SB-THREAD:GRAB-MUTEX.
1320 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1321 contain additional data structures and tools for concurrent programming;
1322 at the moment it contains a lock-free queue, and a lock-free mailbox
1324 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1325 GET-MUTEX but takes &key rather than &optional parameters. Also added
1326 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1328 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1329 SB-THREAD:WAIT-ON-SEMAPHORE.
1330 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1332 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1333 conditions to defer the deadline for forever.
1334 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1336 * enhancement: errors from NO-APPLICABLE-METHOD and
1337 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1338 generic function call.
1339 * enhancement: SB-BSD-SOCKET improvements
1340 ** sockets and socket streams now have a more informative printed
1341 representation based on the corresponding SOCKET-NAME and
1343 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1345 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1346 CL:CLOSE when appropriate, and no longer disassociates the stream
1347 from the socket if close failed. (lp#543951)
1348 * improvements to the instrumenting profiler
1349 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1350 ** optimization: counters no longer use locks for the overflow mode.
1351 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1352 incurred an off-by-one miscount.
1353 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1354 * enhancement: improved DEFMETHOD pretty-printing.
1355 * enhancement: perform range reduction when arguments are too large for
1356 x87's transcendentals (instead of returning 0). (lp#327192)
1357 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1358 some of CL-PPCRE's macros. (lp#570079)
1359 * enhancement: our machine code is slightly less hostile to valgrind on
1361 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1362 to Robert Swindells and Aleksej Saushev)
1363 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1364 * bug fix: a rare case of startup-time page table corruption.
1365 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1366 to timeouts could be left in an inconsistent state.
1367 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1368 * bug fix: misoptimization of multiplication by one in
1369 (SB-C::FLOAT-ACCURACY 0) policies.
1370 * bug fix: miscounts in SB-PROFILE.
1371 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1372 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1373 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1374 up itself" (March 2010) for further details.
1375 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1376 against length of the list if the element is found before the specified
1377 END is reached. (thanks to Alec Berryman, lp#554385)
1378 * bug fix: errors signalled during package graph modification no longer
1379 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1380 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1381 :SB-DOC feature. (lp#552564)
1382 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1383 * bug fix: more robust runtime executable path detection. (lp#375549)
1384 * bug fix: GCD always returns positive values. (lp#413680)
1385 * bug fix: Converting division to multiplication by reciprocal handles
1387 * bug fix: We were too eager in eliding range reduction tests on x87.
1388 The maximal magnitude is 2^63, not 2^64.
1389 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1391 * bug fix: Maybe restore buildability on Alpha.
1392 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1394 * bug fix: RANDOM-STATE can be printed readably again.
1395 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1396 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1397 types) could result in type mismatches during compilation.
1399 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1400 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1401 stack frame thrown from.
1402 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1403 compiler optimization qualities inside dynamic extent of its body.
1404 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1405 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1407 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1408 constraint propgation, allowing better compilation eg. when used to
1409 access structures with WITH-SLOTS. (lp#520366)
1410 * optimization: the compiler is now more aware of the type of the underlying
1411 storage vector for multidimensional simple arrays resulting in better code
1412 for accessing such arrays.
1413 * optimization: passing NIL as the environment argument to TYPEP no longer
1414 inhibits optimizing it. (lp#309788)
1415 * optimization: more efficient register usage when handling single-float
1416 arguments on x86-64. (thanks to Lutz Euler)
1417 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1418 pre-allocated temporary vectors. (lp#496249)
1419 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1420 in :INITIAL-CONTENTS. (lp#523612)
1421 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1422 functions. (lp#524707)
1423 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1424 WITH-SLOTS usages during compilation.
1425 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1426 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1427 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1428 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1429 instruction (tested on x86oid linux with ud2-breakpoints).
1430 * bug fix: slam.sh now works on win32.
1431 * bug fix: better differences of numeric types. (lp#309124)
1432 * bug fix: arrays declared intersection and union types can have their
1433 upgraded element type derived. (lp#316078)
1434 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
1435 threads started during profiling. (lp#472499)
1436 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
1438 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
1439 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
1440 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
1441 values instead of signaling an error. (lp#309093)
1442 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
1444 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
1445 declarations (lp#497321)
1446 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1447 and failed to detect circular lists (lp#452008)
1448 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1450 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1451 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1452 due to it, so that handlers can run.
1453 * bug fix: reparsing undefined types if they have become defined since
1454 parsing. (lp#309128)
1455 * bug fix: missing &REST type in a proclamation for a function with both
1456 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1457 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1458 expanded calls (lp#542174)
1459 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1460 than just at toplevel form.
1462 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1463 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1464 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1465 but work on type specifiers.
1466 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1467 to name a type specifier.
1468 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1469 specifier is valid where "valid" basically means "would be accepted as
1470 second argument of TYPEP".
1471 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1472 returns the function's declared, or derived FTYPE.
1473 * new feature: SB-POSIX now supports accessing the d_ino member of
1474 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1475 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1476 provide for seeding a RANDOM-STATE object with user-provided data or
1477 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1478 attempt to initialize the returned state from the operating system's
1479 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1480 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1481 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1482 * bug fix: Fix grammar and style issues for the docstrings of
1483 printer-related variables and functions. (Thanks to mon_key; launchpad
1485 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1487 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1488 in a row even though a handler defered the deadline long into the
1490 * bug fix: A deadline handler was run without interrupts enabled for a
1491 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1492 in infinitely spinning, non-killable threads.
1493 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1494 before reaching the erring stack frame.
1495 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1496 real power. (launchpad bug lp#525949)
1497 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1498 GENCGC platforms. (launchpad bug lp#529014)
1499 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1500 (launchpad bug lp#525916)
1501 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1502 (Thanks to Robert Goldman)
1504 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1505 * optimization: ROUND with a single single-float or double-float argument
1506 is properly inlined when possible.
1507 * optimization: Slightly better code is generated for integer<->float
1508 conversions and for single-float<->double-float conversions on x86-64.
1509 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1510 code for 32-bit and 64-bit rotations on x86-64.
1511 * bug fix: The install script changes the ownership of directories as well
1512 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1513 launchpad bug lp#508485)
1514 * bug fix: TRUNCATE with a single single-float or double-float argument is
1515 properly inlined when possible. (launchpad bug lp#489388)
1516 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1517 no longer causes a compiler error on x86 and ppc.
1518 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1519 always relative to *READTABLE* rather than the passed argument.
1521 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1522 * minor incompatible change: threading support is now enabled by default
1524 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1526 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1527 are now caught and reported just like errors during macroexpansion.
1528 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1529 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1530 * enhancement: ASDF systems can now depends on SB-QUEUE.
1531 * fixes and improvements related to Unicode and external formats:
1532 ** bug fix: error handling and restart usage in the ucs-2 external format
1534 ** there is now an implementation of the ucs-4 external format.
1535 ** the utf-16 and utf-32 external formats are supported.
1536 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1537 in the environment. setenv() and unsetenv() are also provided. (reported by
1538 Fare Rideau; launchpad bug lp#460455)
1539 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1540 loading. This ensures sensible errors for .FASL files from other
1541 implementations on case-insensitive filesystems. (reported by Willem
1542 Broekema; launchpad bug lp#489417)
1543 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1544 Willem Broekema; launchpad bug lp#489698).
1545 * bug fix: some minor code rearrangements to reenable warning-free building
1546 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1547 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1549 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1552 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1553 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1554 * improvement: support O_LARGEFILE access to files larger than 2GB on
1555 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1556 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1557 definitions for methods specializing on the passed class itself.
1558 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1559 definitions for methods specializing on the passed class itself, or on
1561 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1562 about itself during the build (e.g. for M-? in Slime), if this flag is
1563 enabled in customize-target-features.lisp. This will increase the core
1564 size by about 5-6mb, though, so it's mostly interesting to SBCL
1566 * new feature: various GENCGC tuning parameters have been experimentally
1567 documented and exported from SB-EXT. See documentation for details.
1568 * fixes and improvements related to Unicode and external formats:
1569 ** the Unicode character database has been upgraded to the
1570 Unicode 5.2 standard, giving names and properties to a number of new
1571 characters, and providing a few extra characters with case
1573 ** improvement: restarts for providing replacement input/output on coding
1574 errors for fd-stream external formats.
1575 ** improvement: where :<encoding> is a keyword corresponding to an
1576 external format the system supports, it is now possible to specify
1577 (:<encoding> :replacement <character>) as an external format which will
1578 automatically substitute <character> on encoding or decoding errors for
1579 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1581 ** improvement: the file streams underlying the standard streams (such as
1582 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1583 which uses the replacement mechanism to handle encoding errors,
1584 preventing various infinite error chains and unrecoverable I/O
1586 ** minor incompatible change: the utf-8 external format now correctly
1587 refuses to encode Lisp characters in the surrogate range (char-codes
1588 between #xd800 and #xdfff).
1589 ** fix a typo preventing conversion of strings into octet vectors
1590 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1592 ** fix a bug in the octet multibyte handling of decoding errors and the
1593 USE-VALUE restart. (launchpad bug lp#314939)
1594 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1595 restart on fd-stream decoding errors.
1596 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1597 error is near the end of file.
1598 ** fix a double-error case in unibyte octet conversions, when the first
1599 use of USE-VALUE is ignored.
1600 ** fix bugs in handling of undefined code points in unibyte encodings.
1601 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1602 streams after an UNREAD-CHAR.
1603 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1604 object is allocated in a boxed region of dynamic space.
1605 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1606 fork with multiple Lisp threads running is made, instead of going
1607 ahead with unpredictable consequences. (reported by Leslie Polzer)
1608 * bug fix: uses of slot accessors on specialized method parameters within
1609 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1610 error while finalizing the class. This fix may cause classes with slot
1611 accessors to be finalized later than previously. (reported by Lars Rune
1612 Nøstdal; launchpad bug lp#473699)
1613 * bug fix: restore buildability on the MIPS platform. (regression from
1614 1.0.30.38, reported by Samium Gromoff)
1615 * bug fix: inspecting closures is less likely to fail with a type error.
1616 * bug fix: no timer starvation when setting the system clock back.
1617 (launchpad bug lp#460283)
1618 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1619 standard pprint dispatch table as specified by CLHS.
1620 * bug fix: give CLISP a hint about a type declaration to enable it to build
1621 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1623 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1624 (reported by Attila Lendvai; launchpad bug lp#310132)
1625 * bug fix: distinguish in type specifiers between arrays that might be
1626 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1627 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1628 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1629 * bug fix: setting the value of a symbol-macro within a method in the
1630 presence of type declarations works properly again. (reported by Iban
1631 Hatchondo; launchpad bug lp#485019)
1633 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1634 * optimization: faster FIND and POSITION on strings of unknown element type
1635 in high SPEED policies. (thanks to Karol Swietlicki)
1636 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1638 * improvement: better error signalling for bogus parameter specializer names
1639 in DEFMETHOD forms (reported by Pluijzer)
1640 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1642 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1644 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1645 removes previous default initargs (reported by Lars Rune Nøstdal and
1647 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1648 lambda-lists. (reported by Peter Seibel)
1649 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1650 correctly when starting from an executable core without saved runtime
1651 options (reported by Faré Rideau, thanks to Zach Beane)
1652 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1653 an optimization note instead. (reported by Martin Cracauer)
1654 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1655 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1656 new process group if it doesn't need to share stdin with the sbcl
1657 process. (thanks to Leslie Polzer)
1658 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1659 (reported by Stanislaw Halik)
1661 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1662 * improvement: stack allocation is should now be possible in all nested
1663 inlining cases: failure to stack allocate when equivalent code is manually
1664 open coded is now considered a bug.
1665 * improvements related to Unicode:
1666 ** the Unicode character database has been upgraded to the
1667 Unicode 5.1 standard, giving names and properties to a number of new
1668 characters, and providing a few extra characters with case
1670 ** the system now recognizes and produces names for Unicode Hangul
1671 syllable characters.
1672 ** the EBCDIC-US external-format is now supported for octet operations
1673 (as well as for stream operations).
1674 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1675 be used to output toplevel compile-time effects into a separate .CFASL
1677 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1678 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1680 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1682 * optimization: division of floating point numbers by constants uses
1683 multiplication by reciprocal when an exact reciprocal exists.
1684 * optimization: multiplication of single- and double-floats floats by
1685 constant two has been optimized.
1686 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1687 sufficient type information is available. (thanks to Leslie Polzer)
1688 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1689 known structure objects are as efficient as defstruct generated accessors.
1690 * optimization: unused vector creation can now be optimized away.
1691 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1692 * improvement: a STYLE-WARNING is signalled when a generic function
1693 clobbers an earlier FTYPE proclamation.
1694 * improvement: the compiler is able to track the effective type of
1695 generic function across method addition and removal even in the
1696 absence of an explicit DEFGENERIC.
1697 * improvement: DESCRIBE now reports on symbols naming undefined
1698 but assumed or declared function as well.
1699 * improvement: recompilation of systems using SB-GROVEL now works
1700 (thanks to Leslie Polzer)
1701 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1702 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1704 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1705 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1706 well as user defined declaration names.
1707 ** VARIABLE-INFORMATION is now aware of alien variables.
1708 * improvement: improved address space layout on OpenBSD (thanks to Josh
1710 * improvement: pretty-printing of various Lisp forms has been improved
1711 (thanks to Tobias Rittweiler)
1712 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1713 unused were deleted in safe code. (reported by John Fremlin)
1714 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1716 * bug fix: some out-of-line array predicates were missing (reported by
1718 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1720 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1721 (thanks to Larry D'Anna)
1722 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1723 as well. (reported by Josh Elsasser)
1724 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1725 leading to possible attempts to delete the same file twice. See docstring
1726 on DELETE-FILE for details. (reported by John Fremlin)
1727 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1728 designator argument, rather than its truename. (reported by Luis
1730 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1731 information about some array types. (thanks to Luis Oliveira)
1732 * bug fix: moderately complex combinations of inline expansions could
1733 be miscompiled if the result was declared to be dynamic extent.
1734 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1735 form (+ <variable> <integer>) were miscompiled under certain
1737 * bug fix: in some cases no compiler note about failure to stack allocate
1738 was emitted, even if the objects were in fact heap allocated.
1739 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1740 allocation could cause objects users might reasonably expect to
1741 be heap allocated to be stack allocated.
1742 * bug fix: DESCRIBE signalled an error for generic functions under
1743 certain circumstances. (thanks to Leslie Polzer)
1744 * bug fix: Fixed spelling of an error message.
1746 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1747 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1748 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1749 of SB-THREAD:THREAD-ERROR-THREAD.
1750 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1751 * new feature: docstrings for local and anonymous functions are no longer
1752 discarded. (thanks to Leslie Polzer)
1753 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1754 values in other threads.
1755 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1756 about object allocation.
1757 * optimization: division of a real float by a complex float is implemented
1758 with a specialised code sequence.
1759 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1760 keywords is an order of magnitude faster.
1761 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1762 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1763 methods, and similarly for non-standard metaclass classes as long as there
1764 are no methods additional on MAKE-INSTANCE.
1765 * optimization: more efficient type-checks for FIXNUMs when the value
1766 is known to be a signed word on x86 and x86-64.
1767 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1768 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1770 * optimization: compiler is smarter about delegating argument type checks to
1772 * optimization: several character functions are now compiled somewhat more
1773 efficiently. (reported by Lynn Quam)
1774 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1775 * improvement: less unsafe constant folding in floating point arithmetic,
1776 especially for mixed complex/real -float operations.
1777 * optimization: constant double and single floats are stored in native
1778 unboxed format on x86[-64].
1779 * optimization: smarter code for arithmetic operations with constant floats,
1780 complex floats, or integers on x86[-64].
1781 * optimization: smarter code for conjugate/multiplication of float complexes
1782 and abs/negate of floats on x86-64.
1783 * optimization: more efficient complex float and real float operations on
1785 * improvement: complex float division is slightly more stable.
1786 * improvement: DESCRIBE output has been reworked to be easier to read and
1787 contains more pertinent information.
1788 * improvement: failure to provide requested stack allocation compiler notes
1789 provided in all cases (requested stack allocation not happening without a
1790 note being issued is now considered a bug.)
1791 * bug fix: SB-POSIX exports the documented types and functions
1792 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1793 types. (reported by "abhi")
1794 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1795 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1796 (thanks to Paul Khuong)
1797 * bug fix: looping around HANDLER-CASE could silently consume stack space
1798 on each iteration. (reported by "foobar")
1799 * bug fix: better error signalling when calls to functions seeking elements
1800 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1801 (reported by Tobias Rittweiler)
1802 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1803 directory components now works as it used to. (various prolems reported by
1804 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1805 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1806 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1807 * bug fix: bogus undefined variable warnings from fopcompiled references to
1808 global variables. (thanks to Lars Rune Nøstdal)
1809 * bug fix: foreign function names should now appear in backtraces on
1810 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1811 * bug fix: SETF compiler macro documentation strings are not discarded
1813 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1814 (thanks to Alex Plotnick)
1815 * bug fix: SLEEP accepts large integer arguments, truncating them to
1816 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1817 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1818 * bug fix: compiler notes for expensive slot type checks could be emitted
1819 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1821 changes in sbcl-1.0.29 relative to 1.0.28:
1822 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1823 https://bugs.launchpad.net/sbcl
1824 Bugs can be reported directly there, or by sending email to
1825 sbcl-bugs@lists.sourceforge.net
1826 (no subscription required.)
1827 * minor incompatible change: under weak type checking policy integer
1828 types are weakened less aggressively.
1829 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1830 allowed to return, which causes SBCL to quit with exit status 0. Previously
1831 if the function returned with a small integer return value, that value
1832 was accidentally reused as the exit status.
1833 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1834 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1835 :HASH-FUNCTION argument. Refer to user manual for details.
1836 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1838 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1839 microseconds since the Unix epoch on all platforms.
1840 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1841 allows the compiler to safely elide boundedness checks for special
1843 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1844 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1845 efficiency measure for threaded platforms, but also valueable in
1847 * new feature: UNC pathnames are now understood by the system on Windows.
1848 * optimization: the compiler uses a specialized version of FILL when the
1849 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1851 * optimization: accesses to potentially non-simple arrays where element type
1852 is known are 50% faster.
1853 * optimization: compiler now generates faster array typechecking code.
1854 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1856 * optimization: multidimensional array accesses in the absence of type
1857 information regarding array rank are approximately 10% faster due to
1858 open coding of ARRAY-RANK.
1859 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1860 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1862 * optimization: result of call to VECTOR can now be stack allocated.
1863 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1864 as long as the resulting array is one-dimensional and has a known
1865 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1866 length of the list matches the known length of the vector does not
1867 allocate the list as an intermediate step. Ditto for VECTOR and simple
1869 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1870 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1871 known element type, and is known to be simple and one dimensional.
1872 * improvement: SBCL now emits a compiler note where stack allocation was
1873 requested but could not be provided (not in all cases, unfortunately)
1874 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1875 * improvement: pretty-printing loop has been implemented properly. (thanks
1876 to Tobias Rittweiler)
1877 * documentation: CLOS slot typechecing policy has been documented.
1878 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1879 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1880 pointer, leading to memory faults. (thanks to Bart Botta)
1881 * bug fix: better floating point exception handling on x86/OpenBSD.
1882 (thanks to Josh Elsasser)
1883 * bug fix: exit status from QUIT when called under --script was lost
1884 (reported by Hubert Kauker)
1885 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1886 same implementation of FILL to initialize the array, even if a more
1887 efficient one was available (reported by Stas Boukarev, thanks to
1889 * bug fix: potential miscompilation of array stack allocation on x86 and
1890 x86-64. (reported by Time Tossavainen)
1891 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1892 result in their subforms being treated as top level forms. (reported by
1894 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1895 than a machine register could leave garbage in the high bits of the
1896 result register (bug 316325).
1897 * bug fix: disable address space randomization Linux/x86-64 as well,
1898 not just x86-64. (reported by Ken Olum)
1899 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1900 generate incorrect code.
1901 * bug fix: #201; type inference for CONS and ARRAY types could derive
1902 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1903 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1904 could not be assigned to or bound with PROGV. (reported by Lorenz
1906 * bug fix: the value of CL:- in the inspector was the previous expression
1907 evaluated rather than the expression being evaluated.
1908 * bug fix: constants can no longer be locally declared special.
1909 * bug fix: signals delivered to threads started from foreign land (read:
1910 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1911 thread by blocking all signals and resignalling.
1912 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1913 from :INITFORM, if any.
1915 changes in sbcl-1.0.28 relative to 1.0.27:
1916 * a number of bugs in cross-compilation have been fixed, with the ultimate
1917 result that building under (at least) clisp should be much more reliable.
1918 * minor incompatible changes: echo-streams now propagate unread-char to the
1919 underlying input stream, and no longer permit unreading more than one
1921 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1922 frames, allowing for instance more reliable backtraces.
1923 * improvement: the debugger REPL can now reference lexical variables
1924 by name directly for code compiled with (DEBUG 3).
1925 * improvement: errors from malformed declarations now have better source
1926 paths associated with them. (thanks to Tobias Rittweiler)
1927 * optimization: faster local calls on x86/x86-64
1928 * bug fix: some error messages for out-of-bound array indexes confused the
1929 index and the bound. (thanks to Stas Boukarev)
1930 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1932 * bug fix: running regressions tests in shells without OSTYPE set now works.
1933 (reported by Harald Hanche-Olsen)
1934 * bug fix: more robust static space exhaustion signalling from
1935 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1936 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1937 docstring away instead of storing it under names such as (LAMBDA (X)).
1938 (reported by Leslie Polzer)
1939 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1940 (thanks to Ole Arndt for the patch)
1941 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1942 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1943 potentially-invalid effective methods in its cache.
1944 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1945 instances as well (thanks to Paul Khuong)
1946 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1947 SB-POSIX:WAITPID and their C equivalents.
1948 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1950 changes in sbcl-1.0.27 relative to 1.0.26:
1951 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1952 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1953 * improvement: the system either recovers from stack exhaustion or dies
1954 properly as opposed to leaving the user uncertain of whether the handler
1955 trampled on some random memory next to the stack or having to rely on
1956 --lose-on-corruption (which is still a good idea to use in production
1957 because stack exhaustion can happen in signal handlers which will likely
1959 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1960 1.0.25.37, reported by Harald Hanche-Olsen)
1961 * bug fix: work around signal delivery bug in darwin (regression from
1962 1.0.25.44, reported by Sidney Markowitz)
1963 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1965 changes in sbcl-1.0.26 relative to 1.0.25:
1966 * incompatible change: an interruption (be it a function passed to
1967 INTERRUPT-THREAD or a timer function) runs in an environment where
1968 interrupts can be enabled. The interruption can use
1969 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1970 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1971 potentially running out of stack. Keep in mind that in the absence
1972 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1973 acquiring a lock can enable interrupts.
1974 * incompatible change: GC-OFF and GC-ON are removed, as they were
1975 always unsafe. Use WITHOUT-GCING instead.
1976 * new feature: runtime option --disable-ldb
1977 * new feature: runtime option --lose-on-corruption to die at the
1978 slightest hint of possibly non-recoverable errors: running out of
1979 memory, stack, alien stack, binding stack, encountering a memory
1980 fault, etc. In the absence of --lose-on-corruption a warning is
1982 * enhancement: detect binding stack exhaustion
1983 * enhancement: detect alien stack exhaustion on x86/x86-64
1984 * improvement: generally more stable and reliable interrupt handling
1985 * improvement: there is a per thread interruption queue,
1986 interruptions are executed in order of arrival
1987 * improvement: a repeating timer reschedules itself when the it has
1988 finished, but expiration times are spaced equally. If an
1989 expiration time is in the past it will trigger after a short grace
1990 period that may give a chance to other things to run.
1991 * optimization: slightly faster gc on multithreaded builds
1992 * optimization: faster WITHOUT-GCING
1993 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1994 important locks so that the debugger/handler doesn't produce
1995 recursive errors or deadlock.
1996 * bug fix: real-time signals are not used anymore, so no more
1997 hanging when the system wide real-time signal queue gets full.
1998 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
2000 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
2001 * bug fix: fix random memory faults related to interrupts on alpha
2002 * bug fix: fix random memory faults related to interrupts on sparc
2003 * bug fix: fix deadlocks related to starting threads
2004 * bug fix: fix deadlines on locks on futex platforms
2005 * bug fix: restore errno in signal handlers
2006 * bug fix: fix deadlocks related to hash tables
2007 * bug fix: fix deadlocks in pcl
2009 changes in sbcl-1.0.25 relative to 1.0.24:
2010 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
2011 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
2012 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
2013 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
2014 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
2015 better name and does not return values so stale on multiprocessor systems.
2016 Also, HOLDING-MUTEX-P was added for about the only sane usage of
2018 * improvement: unithread builds keep track of MUTEX-VALUE.
2019 * improvement: reading from a TWO-WAY-STREAM does not touch the output
2020 stream anymore making it thread safe to have a concurrent reader and
2021 a writer, for instance, in a pipe.
2022 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
2023 arguments, making compiler-macros for SETF-functions able to inspect
2024 their constant arguments.
2025 * improvement: COMPILE-FILE reports times with millisecond accuracy
2026 (thanks to Luis Oliveira)
2027 * optimization: CHAR-CODE type derivation has been improved, making
2028 TYPEP elimination on subtypes of CHARACTER work better. (reported
2029 by Tobias Rittweiler, patch by Paul Khuong)
2030 * bug fix: setting alien structure fields of type struct by value now
2031 computes the right offset for the memory copy.
2032 * bug fix: compilation problem involving inlined calls to aliens with
2033 result type VOID. (reported by Ken Olum)
2034 * bug fix: #235a; sequential inline expasion in different policies no
2035 longer reuses the functional from the previous expansion site.
2036 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
2037 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
2038 * bug fix: named ENUMs in multiply-referenced alien record types no longer
2039 cause an implied type redefinition. Regression from 1.0.21.29.
2040 * bug fix: sign-extension of small signed return values now works with C
2041 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
2042 * improvements to the Windows port:
2043 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
2044 Westfold, thanks to Rudi Schlatte)
2046 changes in sbcl-1.0.24 relative to 1.0.23:
2047 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
2048 vector of a multidimensional SIMPLE-ARRAY.
2049 * new feature: the system now signals a continuable error if standard
2050 readtable modification is attempted. (thanks to Tobias Rittweiler)
2051 * new feature: DIRECTORY has been extended with a non-standard keyword
2052 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
2053 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
2054 has been robustified and documented better. (thanks to Robert Goldman)
2055 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
2056 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
2057 * tradeoff: constant FORMAT control strings are now compiled unless
2058 SPACE > SPEED (previously only when SPEED > SPACE.)
2059 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
2061 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
2063 * bug fix: lexical type declarations are now correctly reported by
2064 SB-CLTL2. (reported by Larry D'Anna)
2065 * bug fix: STRING-TO-OCTETS did not handle :START properly when
2066 using UTF-8 as external format. (thanks to Luis Oliveira)
2067 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
2068 are signalled correctly. (thanks to Stas Boukarev)
2069 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
2070 designator. (thanks to Tobias Rittweiler)
2071 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
2072 designator, and returns T instead of the function. (thanks to
2074 * bug fix: direct superclasses of STANDARD-CLASS and
2075 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
2076 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
2077 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
2078 when no class with the named slot yet exists no longer causes a
2079 compile-time style-warning.
2080 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
2081 in safe code. (reported by Didier Verna)
2082 * bug fix: #430; nested structure constructors can stack allocate.
2083 * bug fix: on some 64-bit platforms dynamic space size was truncated
2084 to #xffff0000 bytes. (reported by Benjamin Lambert)
2085 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
2086 REPL unusable. (reported by Daniel Herring)
2087 * bug fix: return values of READ-SEQUENCE did not take :START into
2088 account on file streams, regressions since 1.0.12.22. (reported by
2089 Thomas Russ, patch by Paul Khuong)
2090 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
2091 method specializer used to confuse permuation vector optimization.
2092 * bug fix: system inserted bogus implicit type declarations for local
2093 special variables in DEFMETHOD bodies.
2094 * bug fix: #354; duplicated frames in backtraces due to
2095 non-tail-call-optimized XEPs to functions with return type NIL
2097 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
2098 initializes structure object slots according to DEFSTRUCT initforms,
2099 and DEFSTRUCT forms :INCLUDEind structure classes defined using
2100 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
2101 (reported by Bruno Haible and Stephen Wilson)
2102 * bug fix: #395; fill-pointer output streams used now support
2103 element-type BASE-CHAR as well.
2104 * bug fix: compiler error when attempting to derive return value of
2105 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
2107 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
2109 * bug fix: Mac OS X binaries should now be portable between Leopard
2112 changes in sbcl-1.0.23 relative to 1.0.22:
2113 * enhancement: when disassembling method functions, disassembly
2114 for the associated fast function is also produced.
2115 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
2117 * optimization: printing with *PRINT-PRETTY* true is now more
2118 efficient as long as the object being printed doesn't require
2119 special handling by the pretty printer.
2120 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
2121 now interact correctly with type declarations.
2122 * partial bug fix: PCL detects infinite recursion during wrapper
2123 validation. (thanks to Attila Lendvai)
2124 * bug fix: #426; nested function calls are inlined properly.
2125 Previously if FOO was an inline function, in calls of the form
2126 (FOO (FOO ...)) the outer call was not inlined.
2127 * bug fix: long long arguments passed in registers to alien
2128 functions on PowerPC Linux and NetBSD are now handled correctly
2129 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
2131 changes in sbcl-1.0.22 relative to 1.0.21:
2132 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
2133 for the shared object in the current directory, but passes the native
2134 namestring of the designated pathname to the operation system's shared
2135 object loading function as-it.
2136 * minor incompatible change: --disable-debugger toplevel option now takes
2137 effect before processing of initialization files and --eval or --load
2139 * new feature: new commandline argument: --script, which supports
2140 shebang lines. See documentation for details. (based on work by
2142 * new feature: SAVE-LISP-AND-DIE can save current values of
2143 --dynamic-space-size and --control-stack-size in the executable core,
2144 causing it to skip normal runtime option processing. See documentation
2145 for details. (thanks to Zach Beane)
2146 * enhancement: inoccous calls to EVAL or generic functions dispatching
2147 on subclasses of eg. STREAM no longer cause compiler notes to appear.
2148 * enhancement: the system no longer resignals errors from --load and
2149 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
2150 associated with the original error to be lost. (thanks to Ariel
2152 * enhancement: :DONT-SAVE keyword argument has been added to
2153 LOAD-SHARED-OBJECT for controlling interaction with
2154 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
2155 the effects of an earlier LOAD-SHARED-OBJECT call.
2156 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
2157 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
2158 provided. (reported by Cedric St-Jean)
2159 * bug fix: circularity handling in the reader did not treat raw
2160 structure slots correctly. (reported by Cedric St-Jean)
2161 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
2162 file descriptors when there were none.
2163 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
2164 was broken. (reporteed by Willem Broekema)
2165 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
2166 pathnames without a directory.
2167 * bug fix: COMPILE-FILE did not warn about undefined variable
2168 references at toplevel, and LOAD of the resulting fasl did
2169 not signal an error.
2170 * bug fix: functions with non-required arguments used to end up with
2171 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
2172 * bug fix: redefining a function with non-required arguments didn't
2173 update the system's knowledge about its call signature properly.
2174 * bug fix: fixed #431; incompatible alien record type redefinitions
2175 are detected and handled. (reported by Neil Haven)
2176 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
2177 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
2179 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2180 after alien stack frames.
2181 * bug fix: strings passed to mk{s,d}temp lacked null termination
2183 changes in sbcl-1.0.21 relative to 1.0.20:
2184 * new feature: the compiler is able to track the effective type of a
2185 generic function across method addition and removal.
2186 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2187 appropriately typed structure slots without locking.
2188 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2189 information like those gathered by TIME using a programming-friendly
2191 * new feature: TIME reports time taken even if the form performs a
2192 non-local transfer of control.
2193 * enhancement: reduced conservativism on GENCGC platforms: on
2194 average 45% less pages pinned (measured from SBCL self build).
2195 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2196 mutate constant symbols or violate declaimed type of the symbol.
2197 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2198 sleeping on the semaphore in heavily contested semaphores.
2199 * bug fix: semaphores and condition variables were not interrupt
2201 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2202 owned by other threads anymore.
2203 * bug fix: FIND on lists called KEY outside the specified
2204 subsequence. (reported by budden)
2205 * bug fix: LOG doesn't use single-float intermediate results when
2206 given mixed integer and double-float arguments, leading to better
2207 precision. (reported by Bob Felts)
2208 * bug fix: LOG with base zero returned values of inconsistent type.
2210 changes in sbcl-1.0.20 relative to 1.0.19:
2211 * minor incompatible change: OPTIMIZE qualities
2212 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2213 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2214 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2215 * documentation: some slot access efficiency guidelines have been
2216 added to the user manual.
2217 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2218 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2219 as ASSOC and MEMEBER.
2220 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2221 to more efficient EQ-comparison versions more often.
2222 * optimization: enhanced derivation of DOLIST iteration variable type
2224 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2226 * optimization: runtime lookup of function definitions can be
2227 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2228 * optimization: compiler is able to derive the return type of
2229 (AREF (THE STRING X) Y) as being CHARACTER.
2230 * optimization: CLRHASH on empty hash-tables no longer does pointless
2231 work. (thanks to Alec Berryman)
2232 * optimization: REPLACE deftransforms don't punt when :START1 or
2234 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2235 no longer emits a code deletion note. (reported by Andrew
2237 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2238 functions with an odd number of &OPTIONAL arguments, a &REST
2239 argument, and one or more &KEY arguments at the call site.
2240 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2241 arguments appeared at call sites as well.
2242 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2243 READ-LINE &co can no longer read from them afterwards. (reported
2245 * bug fix: fixed #427: unused local aliens no longer cause compiler
2246 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2248 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2249 alien-stack leakage. (reported by Andy Hefner)
2250 * bug fix: PROGV signals an error when an attempt to violate declared
2251 type of a variable or bind a constant is made.
2252 * bug fix: SET signals an error when an attempt to violate declared
2253 type of a variable is made.
2254 * bug fix: restart computation during the execution of a restart
2255 test function no longer causes infinite recursion. (reported by
2257 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2258 signals an error. (thanks to Pierre Mai)
2259 * bug fix: EXPORT left symbol unexported in conflict situations.
2260 (thanks to Michael Weber)
2261 * bug fix: correctly handle name conflicts involving CL:NIL.
2262 (thanks to Michael Weber)
2263 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2264 conflicts arising from USEing package with conflicting symbols
2265 correctly. (thanks to Michael Weber)
2267 changes in sbcl-1.0.19 relative to 1.0.18:
2268 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2269 warnings that go otherwise unhandled will be muffled if they are
2270 of the type that's the value of this variable.
2271 * optimization: stack allocation is slightly more efficient on x86
2273 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2274 where a raw slot always is initialized using the initform whose
2275 type is not know sufficiently well a compile-time are now compiled
2276 correctly. (reported by John Morrison)
2277 * bug fix: compiler no longer makes erronous assumptions in the
2278 presence of non-foldable SATISFIES types.
2279 * bug fix: stack analysis missed cleanups of dynamic-extent
2280 arguments in non-let-converted calls to local functions.
2281 * improvements to the Windows port:
2282 ** adjusted address spaces for building on both Win32 and
2283 Win64. (thanks for John Connors)
2284 * fixed some bugs revealed by Paul Dietz' test suite:
2285 ** interval arithmetic during type derivation used inexact integer
2286 to single-float coercions.
2287 ** arithmetic operations involving large integers and single
2288 floats give the same results in compiled and interpreted code.
2289 ** deriving the result type of COERCE no longer signals an error
2290 if the derived type of the second argument is a MEMBER type
2291 containing invalid type specifiers.
2292 ** ADJOIN with constant NIL as second argument works correctly.
2293 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2295 changes in sbcl-1.0.18 relative to 1.0.17:
2296 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2297 profiles only the current thread.
2298 * minor incompatible change: changes to SYMBOL-VALUE of constants
2299 defined with DEFCONSTANT now signal an error.
2300 * enhancement: SB-SPROF now has support for wallclock profiling,
2301 and is also able to profile specific threads. REPORT output
2302 has also additional sorting options.
2303 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2305 * optimization: structure allocation has been improved
2306 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2307 ** out of line constructors are ~10% faster.
2308 ** inline constructors are ~15% faster.
2309 ** inline constructors are capable of dynamic extent allocation
2310 (generally on x86 and x86-64, in some cases on other platforms
2312 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2314 * optimization: file compiler is now able to coalesce non-circular
2315 lists, non-base strings, and bit-vectors. Additionally, constants
2316 are never referenced through SYMBOL-VALUE at runtime.
2317 * optimization: code defining methods on PRINT-OBJECT (and other
2318 generic functions in the COMMON-LISP package) now loads faster.
2319 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2321 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2322 fasl is now deleted. (reported by Attila Lendvai)
2323 * bug fix: READ-LINE always returned NIL for the last line in files.
2324 (reported by Yoshinori Tahara)
2325 * bug fix: more accurate disassembly annotations of foreign function
2326 calls. (thanks to Andy Hefner)
2327 * bug fix: trimming non-simple strings and non-string string
2328 designators when the there is nothing to trim works properly.
2329 (thanks to James Knight)
2330 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2331 (thanks to Travis Cross)
2332 * fixed some bugs revealed by Paul Dietz' test suite:
2333 ** NIL is a valid function name (regression at 1.0.13.38)
2334 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2335 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2336 fill pointers properly (regression at 1.0.12.23)
2337 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2338 displacement indices properly (regression at 1.0.12.23)
2340 changes in sbcl-1.0.17 relative to 1.0.16:
2341 * temporary regression: user code can no longer allocate closure
2342 variable storage on stack, due to bug 419 without explicitly
2343 requesting it. Please consult sbcl-devel for advice if you need to
2344 use this feature in the meanwhile.
2345 * new feature: runtime argument --control-stack-size can be used to
2346 adjust thread default control stack size.
2347 * enhancement: improved TIME output
2348 ** all times are reported using the measured accuracy (milliseconds
2349 for real and GC times, microseconds for everything else.)
2350 ** processor cycle counts on x86 and x86-64.
2351 ** interpreted forms are counted for both evaluator modes.
2352 ** number of lambdas converted by the compiler is reported.
2353 ** CPU percentage report (computed from real and total run time.)
2354 ** more comprehensive run time reporting, using a condenced format
2355 ** interperted form, lambda, and page fault counts are omitted
2357 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2359 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2360 * optimization: two argument forms of LAST are upto ~10% faster
2361 in normal SPEED policies.
2362 * optimization: NCONC no longer needs to heap cons its &REST list
2363 in normal SPEED policies.
2364 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2365 to Sidney Markowitz)
2366 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2367 regression since 1.0.9.1. (thanks to Eric Marsden)
2368 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2369 since 1.0.15.36. (thanks to Paul Khuong)
2370 * bug fix: LAST when always returned the whole list when given a bignum
2371 as the second argument.
2372 * bug fix: dynamic extent allocation of nested lists and vectors
2373 could leak to otherwise accessible parts.
2374 * bug fix: invalid optimization of heap-allocated alien variable
2376 * bug fix: fasl header checking is less vulnerable to different
2377 platform word lengths.
2378 * bug fix: more correct assembler syntax for GNU binutils
2379 2.18.50.0.4 support. (thanks to Marijn Schouten)
2380 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2382 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2383 declarations) successfully. (reported by Attila Lendvai)
2385 changes in sbcl-1.0.16 relative to 1.0.15:
2386 * minor incompatible change: revert the changes to sb-posix's error
2387 signaling added in 1.0.14.
2388 * minor incompatible change: change PROBE-FILE back to returning
2389 NIL whenever we can't get a truename, as was the case before 1.0.14.
2390 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2391 inherits from ERROR instead of just CONDITION.
2392 * new feature: SB-INTROSPECT can provide source locations for instances
2393 as well. (thanks to Tobias Rittweiler)
2394 * optimization: binding special variables now generates smaller code
2395 on threaded platforms.
2396 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2397 and cases where no :TEST is given but the compiler can infer that
2398 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2399 * optimization: better LOGNOT on fixnums.
2400 * optimization: modular arithmetic for a particular requested width
2401 is implemented using a tagged representation unless a better
2402 representation is available.
2403 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2404 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2405 for wellformedness and returns a specialized vector. (reported by
2406 Francois-Rene Rideau)
2407 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2408 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2409 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2410 unscheduling timer at the same time as another timer fires.
2411 * bug fix: don't reschedule timers for dead threads.
2412 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2413 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2414 bogus errors if select() was interrupted.
2415 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2417 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2418 * enhancement: cleaner backtraces for interactive interrupts, as
2419 well as other cases where the interesting frames used to be
2420 obscured by interrupt handling frames.
2421 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2422 now supported, and tracing a whole package using (TRACE "FOO") now
2423 traces SETF-functions as well.
2424 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2425 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2426 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2427 * unreadably printed representation of hash-tables now includes
2429 * bug fix: partially fixed #188: type propagation from assignments
2430 is now more efficient.
2431 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
2432 'DOUBLE-FLOAT) are not flushable.
2433 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
2434 full address of the object, and none of the tag bits.
2435 * bug fix: readably printing hash-tables now respects other printer
2436 control variables. (reported by Cedric St-Jean)
2437 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
2438 keyword with MAKE-HASH-TABLE.
2439 * bug fix: export SB-POSIX:MKSTEMP.
2440 * bug fix: SORT was not interrupt safe.
2441 * bug fix: XREF accounts for the last node of each basic-block as
2443 * bug fix: MAKE-INSTANCE optimizations interacted badly with
2444 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
2445 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2446 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2447 create obsolete instances in the case of redefinition or
2448 obsoletion of a superclass. (thanks to Andy Hefner)
2449 * bug fix: Support for the Alpha architecture has been revived; it had
2450 suffered somewhat from lack of maintenance since sbcl-1.0.
2451 * improvements to the Windows port:
2452 ** The system detects the codepage to use at startup, instead of
2453 using the value from the saved core. (thanks to Kei Suzuki)
2455 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2456 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2457 (see documentation for details.)
2458 * revived support for OpenBSD (contributed by Josh Elsasser)
2459 * partially fixed bug #108: ROOM no longer suffers from occasional
2460 (AVER (SAP= CURRENT END)) failures.
2461 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2462 bodies no longer cause a WARNING to be signalled. (reported by
2464 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2465 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2466 the bug in TRUNCATE.) (reported by Michael Weber)
2467 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2468 no samples. (reported by Andy Hefner)
2469 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2470 no longer appear as (NIL ...) frames in backtraces.
2471 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2472 is now actually exported from SB-EXT as documented. (reported by
2474 * bug fix: sb-aclrepl now correctly understands how to inspect
2475 single-floats on 64-bit platforms where single-floats are not boxed.
2476 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2477 yet been finalized. (reported by Levente Meszaros)
2478 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2479 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2480 SBCL-specific optimize qualities.
2482 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2483 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2484 an executable in the search path, and does so in the child
2485 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2486 been removed; it can be found in the CVS history, for somebody who
2487 needs that search behavior (see the manual).
2488 * minor incompatible change: compiler policy re. weakening type
2489 checks has changed: now type checks are weakened only if SAFETY < 2
2491 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2492 unparsing of directory pathnames as files. Analogously,
2493 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2494 filename to parse into a directory pathname.
2495 * enhancement: implicit generic function creation now signals a
2496 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2497 users can bind handlers for and muffle around calls to LOAD.
2498 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2499 to be used (using the default stream external format), and allows
2500 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2501 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2502 strings and vectors whose element-type or simplicity is not fully
2503 known at compile-time.
2504 * optimization: STRING-TRIM and related functions no longer allocate
2505 a new string when no trimming needs to be performed. These functions
2506 are also faster than before when the input string has been declared
2508 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2509 * optimization: READ-LINE is significantly faster for files containing
2511 * optimization: non-open coded uses of character comparison operators
2512 (e.g. char=) no longer cons when called with more than one parameter
2513 on platforms supporting dynamic-extent allocation.
2514 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2515 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2516 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2518 * bug fix: some sequence functions elided bounds checking when
2520 * bug fix: too liberal weakening of union-type checks when SPEED >
2522 * bug fix: more bogus fixnum declarations in ROOM implementation
2525 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2526 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2527 :SYNCHRONIZED argument, which makes the hash-table safe for
2528 concurrent accesses (but not iteration.) See also:
2529 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2530 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2531 * optimization: CONCATENATE on strings is an order of magnitude faster
2532 in code compiled with (> SPEED SPACE).
2533 * optimization: SUBSEQ is ~50% faster on lists.
2534 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2535 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2536 END is smaller then START.
2537 * bug fix: SB-PROFILE will no longer report extra consing for nested
2538 calls to profiled functions.
2539 * bug fix: ROOM implementation had bogus fixnum declarations which
2540 could cause type-errors when calling ROOM on large images.
2541 * bug fix: if file compilation is aborted, the partial fasl is now
2542 deleted, and COMPILE-FILE returns NIL as the primary value.
2543 * bug fix: number of thread safety issues relating to SBCL's internal
2544 hash-table usage have been fixed.
2545 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2546 be returned from its body when the values were being returned
2547 using unknown-values return convection and the W-P-O was wrapped
2548 inside an UNWIND-PROTECT.
2549 * bug fix: sb-posix should now compile again under Windows, enabling
2550 slime to work again.
2552 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2553 * incompatible change: hash-table accessor functions are no longer
2554 automatically protected by locks. Concurrent accesses on the same hash-table
2555 from multiple threads can give inconsistent results or even corrupt the
2556 hash-table completely. Multi-threaded applications should do their own
2557 locking at the correct granularity. In the current implementation it is
2558 still safe to have multiple readers access the same table, but it's not
2559 guaranteed that this property will be maintained in future releases.
2560 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2561 and will signal an error at runtime.
2562 * enhancement: SB-THREAD package now exports a semaphore interface.
2563 * enhancement: CONS can now stack-allocate on x86 and
2564 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2566 * enhancement: nested lists can now be stack allocated on
2567 platforms providing stack allocation support.
2568 * enhancement: dynamic-extent support has been extended to support
2569 cases where there are multiple possible sources for the stack
2571 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2572 if the mutex is uncontested on Linux.
2573 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2574 as specified by the CLHS. (thanks to Tobias Rittweiler)
2575 * bug fix: NaN comparison now works on x86-64.
2576 * bug fix: CLOSE :ABORT T on a stream with pending output now
2578 * bug fix: instances of non-standard metaclasses using standard
2579 instance structure protocol sometimes missed the slot type checks
2581 * bug fix: known functions can be inlined in high-debug code.
2583 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2584 * minor incompatible change: the MSI installer on Windows no longer
2585 associates .lisp and .fasl files with the installed SBCL.
2586 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2587 on Windows. (thanks to Luis Oliviera)
2588 * new feature: SB-CLTL2 contrib module now implements
2589 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2590 * optimization: scavenging weak pointers is now more efficient,
2591 requiring O(1) instead of O(N) per weak pointer to identify
2592 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2593 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2594 method bodies using constant slot-names when the first argument is
2595 a specializer parameter for the method.
2596 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2597 names, when the class of the instance is a direct instance
2598 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2599 as slow as the constant slot-name case.)
2600 * optimization: member type construction is now O(N) instead
2602 * optimization: UNION and NUNION are now O(N+M) for large
2603 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2605 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2606 now more readable in environments like Slime which display it.
2607 (thanks to Tobias C. Rittweiler)
2608 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2609 was able to infer the correct argument type for the object on which
2610 the CAS operation was being performed.
2611 * bug fix: copy propagation interfered with parallel assignment
2612 semantics in local calls. (reported by Paul Khuong)
2613 * bug fix: the signed modular fixnum shift compiled to wrong code on
2614 x86 and x86-64. (spotted by a slight modification to some of
2617 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2618 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2619 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2620 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2622 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2623 and generic function now print the object identity for anonymous
2624 instances. (thanks to Attila Lendvai)
2625 * enhancement: as an extension to MOP, SBCL now supports SETF of
2626 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2627 (thanks to Attila Lendvai)
2628 * enhancement: sb-cover has an alternate annotation mode which puts
2629 the form annotations at the car of the form, instead of annotating
2630 it completely. The benefit of this mode is that it shows better
2631 which forms were instrumented by the compiler.
2632 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2633 by printer control variables. (reported by Dan Corkill)
2634 * bug fix: system leaked memory when delayed output was performed by
2635 the OS in smaller chunks then expected. (thanks to David Smith)
2636 * bug fix: system leaked memory when file streams were not closed
2638 * bug fix: large objects written to slow streams that were modified
2639 after the write could end up with the modified state written to
2640 the underlying file descriptor.
2641 * bug fix: multiple threads operating in parallel on the same stream
2642 could cause buffer-overflows.
2643 * bug fix: source location information is stored correctly
2644 (broken since 1.0.6). This bug would generally show up as the
2645 Slime debugger highlighting the wrong form when the sldb-show-source
2647 * bug fix: Branch forms are again annotated as branches in the sb-cover
2649 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2650 on x86-64. (reported by Gregory Vanuxem)
2651 * bug fix: EQUALP could return wrong results for structures with raw
2652 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2653 word). (reported by Vjacheslav Fyodorov)
2654 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2657 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2658 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2659 atomic compare-and-swap operations on threaded platforms.
2660 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2661 allows assigning a global minimum value to optimization qualities
2662 (overriding proclamations and declarations).
2663 * enhancement: closed over variables can be stack-allocated on x86
2665 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2667 * optimization: slot definition lookup is now O(1). This speeds up
2668 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2669 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2670 * optimization: ASSOC and MEMBER can now be open-coded for all
2671 combinations of keyword arguments when second argument is constant
2672 and SPEED >= SPACE. In other cases a specialized version is
2674 * bug fix: using obsoleted structure instances with TYPEP and
2675 generic functions now signals a sensible error.
2676 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2677 (reported by Kristoffer Kvello)
2678 * bug fix: backtrace construction is now more careful when making
2679 lisp-objects from pointers on the stack, to avoid creating bogus
2680 objects that can be seen by the GC.
2681 * bug fix: defaulting of values in contexts expecting more than 7
2682 variables now works on x86-64. (reported by Christopher Laux)
2683 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2685 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2686 as the property-list of a symbol.
2687 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2688 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2689 situations requested, are once again file-compileable. (reported
2692 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2693 * MOP improvement: support for user-defined subclasses of
2694 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2695 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2696 the expansion of DEFMETHOD, is responsible for generating a form
2697 which creates a list of specializers when evaluated. Additional
2698 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2699 debugging and introspective support.
2700 * minor incompatible change: the (unsupported) spinlock interface
2701 has changed: free spinlock now has the value NIL, and a held spinlock
2702 has the owning thread as its value.
2703 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2704 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2706 * enhancement: name of a socket-stream is now "a socket" instead of
2707 "a constant string".
2708 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2709 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2710 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2711 for generic functions. (Thanks to Tobias C. Rittweiler)
2712 * optimization: bignum printing speed has been improved by 20-40%
2713 (depending on the bignum size.)
2714 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2716 * bug fix: the cache used by the CLOS to store precomputed effective
2717 methods, slot offsets, and constant return values is now thread and
2719 * bug fix: generic function dispatch function updating is now thread
2720 and interrupt safe (in the sense that the known issues have been
2722 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2723 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2724 * bug fix: asdf systems with dependencies to the SB-POSIX or
2725 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2726 * bug fix: interrupt safety of applicable method computation has been
2729 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2730 * new contrib: sb-cover, an experimental code coverage tool, is included
2731 as a contrib module.
2732 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2733 significantly faster.
2734 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2735 produce more efficient code on x86-64 if the compiler can determine
2736 that (+ INDEX <constant>) does not require a bounds check and FOO
2737 has an element type at least 8 bits wide.
2738 * enhancement: a new, experimental synchronous timeout facility is
2739 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2740 * enhancement: when a symbol name conflict error arises, the
2741 conflicting symbols are always printed with a package prefix.
2742 (thanks to Kevin Reid)
2743 * enhancement: stepping is now once again supported on the SPARC and
2744 MIPS platforms. (It is also now more likely to work on CheneyGC
2746 * enhancement: sb-sprof can now also track and report accurate call
2748 * bug fixes: the treatment of non-standard subclasses of
2749 SB-MOP:SPECIALIZER is more correct.
2750 * incompatible change: PURIFY no longer copies the data from the
2751 dynamic space into the static and read-only spaces on platforms
2752 that use the generational garbage collector
2753 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2755 * bug fix: GC race condition occasionally resulting in crashes with
2756 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2758 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2760 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2761 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2762 * bug fix: an asynchronous interrupt could previously leave the
2763 system running with GC inhibited.
2764 * bug fix: a DECLARE form evaluated at top-level now causes an error
2765 rather than silently (or verbosely) returning NIL.
2766 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2767 result in a error being signalled due to source form lookup errors.
2768 (reported by Peter Graves)
2770 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2771 * incompatible change: removed writer methods for host-ent-name,
2772 host-ent-addresses -- changing the values did not update the DNS
2774 * minor incompatible change: changed experimental JOIN-THREAD interface
2775 * documentation: the manual now lists reader and writer methods
2776 in class slot documentation sections. (thanks to Richard M Kreuter)
2777 * documentation: unwinding from asyncronous events has been
2778 documented as unsafe.
2779 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2780 in multithreaded application code.
2781 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2782 platforms. (thanks to James Anderson for the optimization hint)
2783 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2785 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2786 variants no longer cons.
2787 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2788 their NOT- variants no longer cons.
2789 * optimization: EQUAL hash tables no longer use SXHASH for objects
2790 of all data types, but instead use an EQL hash for types for which
2791 EQUAL is the same as EQL.
2792 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2793 are significantly faster.
2794 * optimization: new STRING-OUTPUT-STREAM implementation is much
2795 faster for large outputs and conses 30% less on average.
2796 * enhancement: XREF information is now collected for references made
2797 to global variables using SYMBOL-VALUE and a constant argument.
2798 * enhancement: SIGINT now causes a specific condition
2799 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2800 * bug fix: FILE-POSITION used to signal an error in some cases where
2801 ANSI requires it to return NIL.
2802 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2803 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2804 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2806 * bug fix: bad type declaration in the CLOS implementation has
2807 been fixed. (reported by James Anderson)
2808 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2809 (thanks to Lutz Euler)
2810 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2811 required by the CLHS. (reported by Samium Gromoff)
2812 * bug fix: dead unbound variable references now signal an error.
2813 (reported by Marco Monteiro)
2814 * bug fix: / with an unused value was being deleted in safe code.
2815 (thanks to Marco Monteiro and Kevin Reid)
2816 * bug fix: number of characters that can be written onto a single
2817 line in a file is unlimited.
2818 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2819 been fixed by inhibiting interrupts for when GC is disabled.
2820 * bug fix: some interrupt safety issues with GETHASH, (SETF
2821 GETHASH), CLRHASH and REMHASH have been fixed.
2822 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2823 specifier no longer causes infinite recursion.
2824 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2825 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2826 * bug fix: an &environment argument with the correct variable information
2827 is passed to macros that are expanded during byte compilation.
2828 (reported by Samium Gromoff)
2829 * bug fix: a logic error was causing the hash function for bignums to
2830 have excessive amounts of collisions. (reported by Faré Rideau)
2831 * bug fix: modifying the contents of an array could change the return
2832 value of SXHASH on that array, which is only allowed for strings
2833 and bit vectors. (bug introduced in 0.9.16)
2834 * improvement: the x86-64/darwin port now passes all tests (except
2835 for the debugger tests) but should still be considered
2836 experimental until this is fixed.
2837 * improvement: a style-warning is signaled for CASE (etc) clauses with
2838 duplicate keys. (thanks to Kevin Reid)
2839 * improvement: macos/x86 and macos/x86-64 now use mach exception
2840 handlers for dealing with illegal instructions (for trapping and
2841 error handling) and memory protection violations (for GC).
2843 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2844 * new platform: experimental support for x86-64/darwin (MacOS).
2845 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2846 and getnameinfo sockets functions are used instead of gethostbyaddr
2847 and gethostbyname, on platforms where the newer functions are available.
2848 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2850 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2851 don't print the startup banner, but behave as if --noinform was passed
2852 as a command line argument. (thanks to Kevin Reid)
2853 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2854 * optimization: code using alien values with undeclared types is much faster.
2855 * optimization: the compiler is now able to open code SEARCH in more cases.
2856 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2857 * bug fix: using standardized COMMON-LISP special variables as loop
2858 variables no longer signals bogus package lock violations. (reported
2860 * bug fix: declaring local loop variables to be of a range-limited type
2861 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2862 (reported by Andras Simon)
2863 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2864 bugs remain on x86-64.)
2865 * bug fix: the #= and ## reader macros now interact reasonably with
2866 funcallable instances.
2867 * bug fix: type-checks for function arguments were compiled using the
2868 compiler policy settings of the wrong lexical environment (in 1.0.2
2870 * bug fix: SHADOW accepts characters as string designators, as required
2871 by the spec (thanks to Eric Marsden)
2872 * bug fix: fixed GC safety issues when foreign functions are called with
2873 non-base strings as arguments
2874 * bug fix: more consistent error output for fatal-compiler-warnings, like
2876 * bug fix: functions with proper names were showing up as NIL in
2877 backtraces (reported by Edi Weitz, regression in 1.0.2)
2879 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2880 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2881 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2882 produce more efficient code on the x86 if the compiler can determine
2883 that (+ INDEX <constant>) does not require a bounds check and FOO
2884 has an element type at least 8 bits wide.
2885 * bug fix: references to undefined variables are handled the same way
2886 in toplevel forms as in the normal compiler
2887 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2889 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2890 (thanks to Jon Buller)
2891 * improvement: faster compilation times for complex functions
2892 * improvement: added readlink support to SB-POSIX (thanks to Richard
2895 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2896 * improvement: experimental support for mach exception handling on
2897 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2899 * improvement: support for GBK external format.
2900 (thanks to Chun Tian (binghe))
2901 * improvement: the debugger now displays variables that have been closed
2902 over, in code compiled with (DEBUG 2) or higher
2903 * improvement: support for executable cores on NetBSD (thanks to
2905 * new feature: added a RESTART-FRAME debugger command
2906 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2907 be used to provide an implementation for FILE-POSITION on Gray streams
2908 (thanks to Eric Marsden)
2909 * new feature: add syslog, openlog and closelog support to SB-POSIX
2910 (thanks to Richard Kreuter)
2911 * optimization: the function call overhead in code compiled with
2912 a high DEBUG optimization setting is significantly
2913 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2914 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2915 (thanks to Tony Martinez)
2916 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2917 evaluated once (reported by Kevin Reid)
2918 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2919 works again (thanks to Kilian Sprotte)
2920 * bug fix: an error is signaled for tagbodies with duplicate tags
2921 (thanks to Stephen Wilson)
2922 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2923 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2924 stack frames from alien callbacks.
2925 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2926 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2927 65k pages (thanks to David Woodhouse)
2928 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2930 changes in sbcl-1.0.1 relative to sbcl-1.0:
2931 * new platform: FreeBSD/x86-64, including support for threading.
2932 * new feature: the compiler stores cross-referencing information
2933 about function calls (who-calls), macroexpansion (who-macroexpands)
2934 and special variables (who-binds, who-sets, who-references) for code
2935 compiled with (< SPACE 3). This information is available through the
2936 sb-introspect contrib.
2937 * new feature: users may subclass SEQUENCE, and have instances of
2938 these classes interoperate with standard Common Lisp functions if
2939 a number of methods are defined. (This feature is experimental
2940 and the interface subject to change based on feedback from SBCL
2941 users and the general community)
2942 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2943 x86/x86-64, rather than the previous fixed depth of 8
2944 * improvement: another pthread back-end of mutex "pthread-futex".
2945 * bug fix: non-ascii command-line arguments are processed correctly
2946 (thanks to Yaroslav Kavenchuk)
2947 * bug fix: non-required arguments were not passed correctly when a method
2948 defined using DEFMETHOD was called from a mop-generated method using
2949 CALL-NEXT-METHOD (reported by Pascal Costanza)
2950 * bug fix: recursion is now permitted in accessors through
2951 SLOT-UNBOUND. (reported by Pascal Costanza)
2952 * bug fix: an error was signaled at startup if the HOME environment
2953 variable was defined, but had an empty value (reported by Peter Van Eynde)
2954 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2955 signal a PROGRAM-ERROR, not a BUG.
2956 * bug fix: SB-POSIX:READDIR works when built with large file support.
2957 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2959 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2960 for better automatic indentation support. (thanks to Matt Pillsbury)
2961 * optimization: loading generic functions no longer takes O(n^2) time,
2962 proportional to the amount of methods in the generic function
2963 (reported by Todd Sabin and Jeremy Brown)
2964 * optimization: the FIND and POSITION family of sequence functions
2965 are significantly faster on arrays whose element types have been
2967 * improvements to the Windows port:
2968 ** Intermittent heap corruption problems have been fixed. (thanks
2969 to Alastair Bridgewater)
2970 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2972 ** Lisp is able to unwind foreign exception frames from alien
2973 callbacks. (thanks to Alastair Bridgewater)
2975 changes in sbcl-1.0 relative to sbcl-0.9.18:
2976 * improvement: experimental support for threading on FreeBSD/x86.
2977 (thanks to NIIMI Satoshi)
2978 * improvement: runtime option --dynamic-space-size can be used
2979 to set the size of the dynamic space reserved on startup.
2980 * improvement: floating point modes in effect are now saved in
2981 core, and restored on startup.
2982 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2983 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2984 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2985 threads are not running after *SAVE-HOOKS* have run.
2986 * improvement: writes to CLOS instance slots are type-checked in code
2987 compiled with (SAFETY 3)
2988 * improvement: floating-point exception handling on FreeBSD (thanks to
2990 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2991 (thanks to Zach Beane)
2992 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2994 * improvement: added support for the Shift-JIS external format.
2995 (contributed by NIIMI Satoshi)
2996 * improvement: callbacks are supported on Linux/PPC. (thanks to
2998 * bug fix: compiler bug triggered by a (non-standard) VALUES
2999 declaration in a LET* was fixed. (reported by Kaersten Poeck)
3000 * bug fix: file compiler no longer confuses validated and already
3001 dumped structurres. (reported by Kaersten Poeck)
3002 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
3003 fill-pointer signals a type-error as required. (thanks to
3005 * bug fix: disassemly of funcallable instances works.
3006 * bug fix: single stepping on PPC.
3007 * bug fix: fix thread-safety problems in the type system (generally
3008 manifesting as nonsensical errors like "STRING is a bad type specifier
3009 for sequences" or "The value 1 is not of type FIXNUM")
3010 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
3011 (reported by Josip Gracin)
3012 * bug fix: an error is signaled for attempts to displace arrays with
3013 incompatible element types (thanks to Mario Mommer)
3014 * bug fix: more correct handling of wide characters in debug info
3015 (bug reported by Attila Lendvai and fixed by Juho Snellman)
3016 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
3017 and don't cause extra consing
3018 * optimization: MAP and MAP-INTO are significantly faster on vectors
3019 whose elements types have been declared.
3020 * Improvements to SB-SPROF:
3021 ** Support for allocation profiling
3022 ** Reduced profiling overhead, especially for long profiling runs
3023 * Improvements to the Windows port:
3024 ** floating point exceptions are now reported correctly.
3025 ** stack exhaustion detection works partially.
3026 ** more accurate GET-INTERNAL-REAL-TIME.
3027 ** better RUN-PROGRAM behaviour in case of errors in the child
3029 ** PROBE-FILE now simplifies pathnames correctly.
3030 ** DIRECTORY now works correctly with :WILD-INFERIORS.
3031 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
3032 1st 1970 (although time timezone data will be unreliable).
3033 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
3035 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
3036 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
3037 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
3039 * bug fix: two potential GC deadlocks affecting threaded builds.
3040 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
3041 returns T (reported by Anton Kazennikov)
3042 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
3043 with non-variable places
3044 * bug fix: remove a race condition in the setting of
3045 funcallable-instance functions, this should make threaded CLOS
3046 code more stable against memory faults.
3047 * bug fix: corruption of specials when unbinding is interrupted by an
3048 asynchronous unwind (reported by Hannu Koivisto)
3049 * improvement: the debugger will now also display local variables that
3050 are only used once, for code compiled with a DEBUG optimization quality
3053 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
3054 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
3055 * incompatible change: External-format support for FFI calls. The
3056 SB-ALIEN:C-STRING no longer implies an ASCII
3057 external-format. Instead the string is subject to external-format
3058 conversion. Additionally return values of type SB-ALIEN:C-STRING
3059 are by default of type (SIMPLE-ARRAY CHARACTER), not
3060 SIMPLE-BASE-STRING. For an alien type that behaves like the old
3061 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
3062 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
3063 * incompatible change: SB-EXT package no longer contains the
3064 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
3065 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
3067 * incompatible change: the single-stepper is no longer available
3068 on Alpha, Mips and Sparc platforms.
3069 * minor incompatible change: the direct superclasses of
3070 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
3071 not (STANDARD-OBJECT FUNCTION). This makes the
3072 class-precedence-lists of GENERIC-FUNCTION and
3073 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
3075 * minor incompatible change: the default stream external format on
3076 non-unicode SBCL is no longer detected from the locale, but is always
3078 * new feature: Add a version of evaluator that uses an interpreter instead
3079 of the compiler. EVAL still uses the compiler by default, to switch it
3080 to use the interpreter, set the value of the variable
3081 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
3082 * minor incompatible change: the single-stepper REPL has been merged
3083 with the normal debugger (see the "Stepping" heading of the debugger help
3084 for more details). The debugger command STEP will no longer switch
3085 to the single-stepper REPL.
3086 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
3087 for a type now works.
3088 * bug fix: loading of default sysinit file works. (thanks to Leonid
3090 * bug fix: better detection of circularities in the file-compiler.
3091 (reported by Marco Monteiro)
3092 * bug fix: the CL pathname functions now work with files that have
3093 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
3094 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
3095 systems with Unix98 pty semantics.
3096 * bug fix: ASDF-INSTALL will now work with bsd tar.
3097 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
3099 * bug fix: timers expiring in dead threads no longer cause a
3100 type-error (reported by Paul "Nonny Mouse").
3101 * bug fix: thanks to more lightweight single-stepper instrumentation,
3102 code compiled with (DEBUG 3) will compile and execute significantly faster,
3103 and will have more accurate type-inferencing than before
3104 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
3105 whose bindings are modified
3106 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
3107 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
3108 ** replace dummy implementations of CL:MACHINE-INSTANCE and
3109 CL:SOFTWARE-VERSION with proper version
3111 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
3112 * feature: implemented the READER-METHOD-CLASS and
3113 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
3114 as specified by AMOP.
3115 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
3117 * optimization: faster LOGCOUNT implementation on x86 and x86-64
3118 (thanks to Lutz Euler)
3119 * optimization: hashing of general arrays and vectors has been
3120 improved. (reported by Any Fingerhut)
3121 * enhancement: SB-INTROSPECT is now able to find definitions of
3122 profiled functions. (thanks to Troels Henriksen)
3123 * enhancement: compiler-macro expansion applies now to FUNCALL forms
3124 as well, allowing compiler-macros for SETF-functions to expand.
3125 * enhancement: step-instrumentation no longer wraps known
3126 single-value functions with multiple-value context, allowing
3127 better type inference.
3128 * fixed bug #337: use of MAKE-METHOD in method combination now works
3129 even in the presence of user-defined method classes. (reported by
3130 Bruno Haible and Pascal Costanza)
3131 * fixed bug #339(c): if there are applicable methods not part of any
3132 long-form method-combination group, call INVALID-METHOD-ERROR.
3133 (reported by Bruno Haible)
3134 * fixed bug #361: the :FUNCTION initarg in the protocol for
3135 initialization of methods can now be used to override
3136 internally-produced optimized functions. (reported by Bruno
3138 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
3139 system-provided lambda expression no longer cause warnings about
3140 unbound #:|pv-table| symbols.
3141 * bug fix: improved the handling of type declarations and the
3142 detection of violations for keyword arguments with non-constant
3144 * bug fix: potentially erronous calls to PATHNAME and
3145 MERGE-PATHNAMES were being flushed in some cases.
3146 (reported by Richard Kreuter)
3147 * bug fix: compiled calls to TYPEP were mishandling obsolete
3148 instances. (reported by James Bielman and Attila Lendvai)
3149 * bug fix: format strings with ~> without matching ~< no longer
3150 trigger an AVER, but signal an understandable error instead.
3151 (reported by Antonio Martinez)
3152 * bug fix: specifying an output-file without a pathname-type for
3153 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
3154 of input-file instead of "fasl". (reported by Robert Dodier)
3155 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
3156 (reported by James Y Knight).
3157 * bug fix: compiler-macros-function did not consider the environment
3158 argument for shadowing by local functions.
3159 * bug fix: compiler-macros expansion was inhibited by local INLINE
3161 * bug fix: inline expansions of known functions were subject to
3162 step-instrumentation in high debug policies, leading to problems
3163 with type-inference.
3164 * bug fix: compiler failed to differentiate between different CONS
3165 types in some cases.
3166 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
3167 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
3168 * bug fix: #368: incorrect use of expressed vs. upgraded array
3170 * bug fix: #306a: more precise unions of array types.
3171 * thread-safety improvements:
3172 ** CONDITION-WAIT could return early on Linux, if the thread was
3173 interrupted and subsequently continued with SIGCONT.
3174 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
3176 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
3177 * added support for the ucs-2 external format. (contributed by Ivan
3179 * minor incompatible change: pretty printing of objects of type
3180 (cons symbol) is, in the default pprint-dispatch-table, now
3181 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3183 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3184 called later in a class's lifetime, possibly as late as when the
3185 first instance of the class is created. Previously,
3186 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3187 class became finalizeable.
3188 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3189 for multibyte external-format streams. (thanks to "vbzoli")
3190 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3191 with :ALLOCATION :CLASS inherited from superclasses of the
3193 * fixed bug: anonymous classes can now be created using the :NAME
3194 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3195 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3196 * fixed bug: core-files saved with :EXECUTABLE T can again be
3197 executed when SBCL_HOME isn't set. (reported by James Knight)
3198 * fixed bug: toplevel LOCALLY forms with declarations could
3199 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3200 * fixed bug: printing from several different threads using different
3201 values of *print-case* could cause invalid output, due to
3202 some internal special variables of the printer not being bound
3203 thread-locally (reported by Max Mikhanosha)
3204 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3205 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3206 (reported by Pascal Costanza)
3207 * fixed bug: FINALIZE-INHERITANCE is called from
3208 REINITIALIZE-INSTANCE on classes when the class has previously
3209 been finalized, as required by AMOP.
3210 * minor code generation optimizations:
3211 ** better register allocation in CLOS dispatching functions
3212 ** overflow detection when coercing signed bytes to fixnums on x86-64
3213 ** is now implemented with one IMUL instruction instead of three shifts
3214 ** more efficient bit-vector access on x86 and x86-64
3215 ** more efficient access to raw structure slots on x86 and x86-64
3216 * fixed some bugs revealed by Paul Dietz' test suite:
3217 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3218 return its argument.
3220 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3221 * feature: thread support on Solaris/x86, and experimental thread support
3223 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3225 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3226 default method for SLOT-UNBOUND.
3227 * minor incompatible change: prevent the user from specializing the
3228 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3229 somewhat counter to the intent of the protocol, I (CSR) think, and
3230 additionally it just doesn't work in SBCL as currently
3231 implemented, thanks to optimizations (that are always valid for
3232 the other three SLOT-VALUEish functions, but not for the setter).
3233 * minor incompatible change: the :SB-LDB feature is now enabled by
3234 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3235 the low-level debugger.
3236 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3237 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3238 down to an SB-SYS:FD-STREAM, allowing direct communication in
3239 more cases. Temporary files and pipes are still used as a fallback
3241 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3242 on the non-reentrant C functions localtime(3) and gmtime(3).
3243 * bug fix: global optimization policy was not visible in LOCALLY and
3245 * bug fix: class objects can be used as specializers in methods.
3246 (reported by Pascal Costanza)
3247 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3248 with a type error. (reported by blitz_ on #lisp)
3249 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3250 failed with a type error. (reported by Pascal Bourguignon)
3251 * bug fix: merging pathnames against defaults with :DIRECTORY
3252 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3253 (reported by James Y Knight)
3254 * bug fix: saving large (>2GB) cores on x86-64 now works
3255 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3256 constant index and a (simple-array (signed-byte 32)) array
3257 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3258 error (patch by Robert J. Macomber)
3259 * feature: TIME now displays the amount of run-time spent in GC
3260 * bug fix: The debugger now does a better job of respecting
3261 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3262 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3263 workaround for bug 403.)
3264 * bug fix: floating point exception handling now works on FreeBSD
3265 (thanks to NIIMI Satoshi)
3266 * fixed some bugs revealed by Paul Dietz' test suite:
3267 ** MISC.641: LET-conversion were not supposed to work in late
3269 * improvements to the Win32/x86 port:
3270 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3271 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3273 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3274 * new feature: source path information is generated for macro-expansion
3275 errors for use in IDE's like Slime (thanks to Helmut Eller)
3276 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3277 * bug fix: compiler does not loop forever on an invalid type in
3279 * improvement: compilation of most CLOS applications is significantly
3281 * optimization: added a limited bytecode compiler for simple toplevel
3282 forms, speeding up compilation and FASL loading
3283 * bug fix: the statistical profiler now properly distinguishes anonymous
3286 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3287 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3288 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3289 into subclasses of the finalized class. Now user calls to
3290 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3291 system return before any subclasses are finalized.
3292 * minor incompatible change: The reader no longer ignores errors
3293 regarding non-existent packages in #+ and #- feature tests.
3294 * new feature: command line options --no-sysinit, --no-userinit to
3295 inhibit loading the corresponding init files
3296 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3297 for sending data through UDP sockets (thanks to François-René Rideau)
3298 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3299 error is signalled instead (thanks to François-René Rideau)
3300 * minor incompatible change: Error signalling behaviour of lexical
3301 operations violating package locks has changed slightly. Refer to
3302 documentation on package locks for details.
3303 * enhancement: EVAL can process IF-expressions without resorting to the
3305 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3306 constant-folded properly due to missing out-of-line functions.
3307 (reported by Mika Pihlajamäki)
3308 * bug fix: LISTEN sometimes returned T even in cases where no data was
3309 immediately available from the stream
3310 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3311 were reversed. (reported by Levente Mészáros)
3312 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3313 when given a vector displaced to an adjustable array. (reported
3315 * bug fix: derivation of float boundaries from numbers outside the
3316 appropriate float range (reported by John Wiseman)
3317 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3319 * bug fix: precomputing cache entries for generic functions with
3320 some subclasses of specializers as yet invalid does not attempt to
3321 fill a cache line with a negative offset. (reported by Levente
3323 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3324 allow condition class objects as arguments to DOCUMENTATION and
3325 (SETF DOCUMENTATION); only find and set documentation for
3326 structure names for the STRUCTURE doc-type. (suggested by Gary
3328 * improvements to the Win32/x86 port:
3329 ** (user-homedir-pathname) and default initialization file
3330 locations now know about the user's "Documents and Settings"
3331 directory (thanks to Yaroslav Kavenchuk)
3332 ** run-program is implemented (thanks to Mike Thomas)
3333 ** sockets support (thanks to Timothy Ritchey)
3334 ** better backtrace support (thanks to Alastair Bridgewater)
3335 ** sb-grovel supported
3336 ** asdf-install and sb-posix work somewhat
3337 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3338 * improvements to the Solaris/x86 port:
3339 ** works on Solaris 11/Solaris Express
3340 ** floating-point exception handling support
3341 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3342 * fixed some bugs revealed by Paul Dietz' test suite:
3343 ** REMOVE-METHOD returns its generic function argument even when
3344 the method is not one of the generic functions' methods.
3345 ** objects declared as MEMBER types can be admissible arguments to
3346 structure accessors.
3347 ** printing characters should simply be printed by the FORMAT ~:C
3349 ** compiler failure when compiling functions with hairy constant
3350 defaults for optional parameters.
3351 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3352 function, which is already optimized.
3354 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3355 * new platform: experimental support for SBCL x86/Darwin, including
3356 MacOS X 10.4.5 on Intel.
3357 * new feature: Unicode character names are now known to the system
3358 (through CHAR-NAME and NAME-CHAR).
3359 * new feature: the filesystem location of SBCL's core file is
3360 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3361 * minor incompatible change: the contrib modules SB-POSIX and
3362 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3363 this change is to make it easier to distribute
3364 location-independent binaries.
3365 * bug fix: as implied by AMOP, standardized classes no longer have
3366 slots named by external symbols of public packages. (reported by
3368 * optimization: calling functions via constant symbols -- as in
3369 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3370 via the function object as in (FUNCALL #'FOO).
3371 * optimization: on x86 and x86-64, the calling convention for the
3372 case of dealing with an unknown number of values has been altered
3373 to be friendlier to the prediction heuristics implemented,
3374 particularly with reference to CALL and RET pairing. (thanks to
3375 Alastair Bridgewater)
3376 * optimization: on x86, the code for access to thread-local symbol
3377 values and binding/unbinding of thread-local symbols is smaller.
3378 (thanks to Alastair Bridgewater)
3379 * enhancement: CONSTANTP is now able to determine constantness of
3380 more complex forms, including calls to constant-foldable standardized
3381 functions and some special forms beyond QUOTE.
3382 * fixed bug: occasional GC crashes on Solaris/x86
3383 * optimization: x86-64 supports stack allocation of results of simple
3384 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3385 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3386 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3387 (thanks to James Knight)
3388 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3389 by the standard (thanks to Stephen Compall)
3391 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3392 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3393 be used for bundling the runtime and the core file into one
3394 executable binary. This feature is not currently supported on all SBCL
3395 platforms. (thanks to James Bielman and NIIMI Satoshi)
3396 * new feature: a generational or ephemeral garbage collector is now
3397 the default on the PowerPC platform (both Linux and Darwin). The
3398 old Cheney (stop and copy) collector is a build-time option.
3399 (thanks to Cyrus Harmon, after Raymond Toy)
3400 * minor incompatible change: the method by which SBCL finds its
3401 contributed modules has changed; it no longer relies on symbolic
3402 links from an $SBCL_HOME/systems directory, but searches directly
3403 in the subdirectories of $SBCL_HOME.
3404 * enhancement: the dynamic heap size on the Linux/PPC platform is
3405 markedly larger, even using the older Cheney garbage collector.
3406 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3407 certain complicated string types. (reported by Gary King)
3408 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3409 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3410 * fixed bug: DOCUMENTATION on structures no longer signals an
3411 error if no structure type of the right name exists. (reported by
3413 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3414 applicable non-standard primary or :AROUND method on
3415 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3416 no longer cause unbound variable errors. (reported by Kevin Reid)
3417 * fixed bug: metacircle resolution in cases where methods have slots
3418 added before the slots from STANDARD-METHOD. (reported by Jean
3420 * fixed bug: the Power PC assembly code for calling into lisp
3421 sometimes computed its return address wrongly (depending on the
3422 15th bit of the address, fixed at link time). This used to
3423 manifest itself in a segmentation violation while building PCL.
3424 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3425 many others over the years)
3426 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3427 the stack pointer (treated as a signed integer) is negative.
3428 (thanks to Peter van Eynde)
3430 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3431 * new platform: experimental support for the Windows operating
3432 system has been added. (thanks to Alastair Bridgewater)
3433 * fixed several bugs in and robustified the PPC FFI (including
3434 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
3435 * bug fix: allow non-simple string symbol names (reported by Paul
3437 * bug fix: interrupt handling on NetBSD (thanks to Richard M
3439 * bug fix: saving a core corrupted callbacks on x86/x86-64
3440 * bug fix: closed a loophole in metacircularity detection and
3441 grounding in the PCL implementation of CLOS.
3442 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
3443 (reported by tomppa on #lisp)
3444 * bug fix: clear the direction flag on Lisp -> C transitions, as
3445 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3446 (reported by Andrej Grozin and Hendrik Maryns)
3447 * optimization: major improvements to GC efficiency on GENCGC platforms
3448 * optimization: faster implementation of EQUAL
3449 * optimization: emit more efficient opcodes for some common
3450 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3451 * optimization: several other minor code-generation improvements on x86-64
3452 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3454 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3455 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3456 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3457 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3458 by ANSI as a generic function, and for consistency (SETF
3459 GENERIC-FUNCTION-NAME) is treated likewise.
3460 * fixed bug #233.b: make constraint propagation notice when a variable
3461 value is changed after it is referenced but before it is used
3462 * fixed bug #296: no more arbitrary behaviour from filenames with
3463 odd characters as --load arguments. (reported by Adam Warner)
3464 * fixed bug #390: :CHARACTER-SET pathname components now work as
3465 expected. (reported by Tim Daly Jr)
3466 * fixed bug #391: complicated :TYPE intersections in slot
3467 definitions no longer cause an error in PCL internals.
3468 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3469 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3470 returning the number of octets which would be written to the
3471 file-stream. (thanks to Robert J. Macomber)
3472 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3473 arguments to the internal stream functions. (thanks to David
3475 * bug fix: stack exhaustion is now handled on the x86/SunOS
3476 platform. (thanks to Daisuke Homma)
3477 * bug fix: more accurate ROOM results on GENCGC platforms
3478 * optimization: improved type inference for arithmetic-for
3479 index variables in LOOP
3480 * optimization: faster floating-point SQRT on x86-64
3481 * fixed some bugs revealed by Paul Dietz' test suite:
3482 ** DOCUMENTATION returns NIL instead of "" for method combinations
3483 that don't have a docstring
3485 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3486 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3487 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3488 therefore are not customizeable by user code (as seems to be at
3489 least permitted and maybe required by AMOP). As a consolation,
3490 however, the SBCL implementation of these functions now calls
3491 REINITIALIZE-INSTANCE as specified by AMOP.
3492 * bug fix: slot-definition documentation is propagated as per ANSI
3493 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3494 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3495 argument, as do eslotd initialization methods. (from Pascal
3496 Costanza's "Closer" project)
3497 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3498 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3500 * bug fix: it is now possible to have more than one subclass of
3501 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3502 (reported by Bruno Haible, Pascal Costanza and others)
3503 * bug fix: the dependent update protocol now works for generic
3504 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3505 and Pascal Costanza)
3506 * bug fix: condition-class instances corresponding to
3507 DEFINE-CONDITION forms are now created eagerly. (reported by
3508 Kalle Olavi Niemitalo on comp.lang.lisp)
3509 * bug fix: floating point printing is more accurate in some
3510 circumstances. (thanks to Simon Alexander)
3511 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3512 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3513 * bug fix: callbacks on OS X now preserve stack-alignment.
3514 (thanks to Cyrus Harmon)
3515 * enhancement: the x86-64 disassembler is much better at
3516 disassembling SSE instructions. (thanks to Lutz Euler)
3517 * enhancement: CHECK-TYPE on a variable now allows type-inference
3518 (thanks to Vincent Arkesteijn)
3519 * optimization: improved performance of EUC-JP external format.
3520 (thanks to NIIMI Satoshi)
3521 * optimization: performance improvements to IO on file streams of
3522 :ELEMENT-TYPE CHARACTER
3523 * optimization: much faster memory allocation on x86-64
3524 * optimization: faster garbage collections (latency and throughput)
3526 * optimization: faster bignum subtraction and division on x86 and x86-64
3527 (thanks to Lutz Euler)
3528 * optimization: more accurate type-inference for loops that use a
3529 floating point index variable or a negative step.
3531 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3532 * bug fix: add a workaround to SBCL looping infinitely at startup on
3533 Linux kernels with apparently buggy implementations of personality().
3534 (thanks to Svein Ove Aas)
3535 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3536 (thanks to David Lichteblau)
3537 * bug fix: local bindings shadow global symbol macros for
3538 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3539 * optimization: non-open coded uses of numeric comparison operators
3540 (e.g. >) no longer cons when called with more than one parameter
3541 on platforms supporting dynamic-extent allocation.
3542 * enhancement: saving cores with foreign code loaded is now supported
3543 on MIPS/Linux in addition to the previously supported platforms.
3544 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3545 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3546 * bug fix: division by zero in sb-sprof when no samples were collected
3547 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3548 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3549 (thanks to Alexander Kjeldaas)
3550 * new feature: ignoring the return values of destructive functions
3551 like NREVERSE signals a compile-time style-warning.
3552 (thanks to Kevin Reid)
3553 * new feature: the alignment of alien structure fields can be
3554 explicitly specified. (thanks to Cyrus Harmon)
3555 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3556 and dump core on SIGQUIT
3558 ** incompatible change: threads do not inherit values of specials
3559 from their parents (see manual)
3560 ** bug fix: threads stacks belonging to dead threads are freed by the
3561 next exiting thread, no need to gc to collect thread stacks anymore
3562 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3563 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3564 ** bug fix: dynamic variable and thread start related gc lossage
3565 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3567 * fixed some bugs revealed by Paul Dietz' test suite:
3568 ** SUBTYPEP is slightly more accurate on heinously complicated
3569 CONS types where some of the members have uncertain (in the
3570 NIL, NIL sense) type relationships to each other.
3572 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3573 no longer purified unless :PURIFY T is explicitly specified.
3574 ** Non-purified cores are significantly smaller than before
3576 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3577 * new feature: timers based on Zach Beane's excellent timer package
3578 * added support for the following external formats: koi8-u,
3579 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3580 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3581 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3582 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3583 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3584 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3585 * incompatible change: a threaded SBCL will no longer revert to
3586 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3587 * bug fix: interrupts are disabled until startup is complete; no
3588 more sigsegvs when receiving a signal to soon
3589 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3591 * bug fix: add a workaround for the memory randomization features in
3592 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3593 workaround will only be in effect on systems with the proc filesystem
3595 * bug fix: printing objects of type HASH-TABLE signals a
3596 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3598 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3599 have been running for over 50 days. (reported by Gilbert Baumann)
3600 * bug fix: the logic for getting names of functions gets less
3601 confused when confronded with alternate-metaclass
3602 funcallable-instances. (reported by Cyrus Harmon)
3603 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3604 consistent, even on internal alternate-metaclass objects.
3605 * bug fix: flush closure information collected by physical
3606 environment analysis prepass before the main pass. (bug reported
3608 * bug fix: compiler pack phase does not modify a hashtable, which is
3609 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3610 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3611 may be expanded. (reported by Alexander <malishev> on c.l.l)
3612 * bug fix: no more style-warnings when compiling code using LAST
3613 under high-SPEED low-SPACE settings. (reported by David Wallin
3615 * fixed some incompatibilities between SBCL's MOP and the MOP
3617 ** the METAOBJECT class is now implemented;
3618 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3619 STANDARD-OBJECT, as required;
3620 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3621 now compatible (as required by VALIDATE-SUPERCLASS); there
3622 remains a consistency requirement over the presence or absence
3623 of the FUNCTION class in the superclass list of finalized
3624 classes; see the manual for more details;
3625 ** the :AROUND method for COMPUTE-SLOTS on
3626 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3627 requested slot ordering.
3629 ** bug fix: parent thread now can be gc'ed even with a live
3631 ** bug fix: binding a special with PROGV to no value is not
3632 the same as that symbol not having been bound (thanks to
3634 ** bug fix: binding specials is thread safe (thanks to
3636 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3637 and SB-SPROF do not die with 'no handler for signal XX in
3638 interrupt_handle_now(..)' anymore
3639 ** bug fix: WITH-TIMEOUT works with multiple running threads
3640 * fixed some bugs revealed by Paul Dietz' test suite:
3641 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3642 the :method-class keyword argument.
3644 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3645 * new port: the Solaris operating system on x86 processors is now
3646 mostly supported, though some rough edges in the environment
3647 remain. (thanks to Daisuke Homma)
3648 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3649 space for its heap. (thanks to Thiemo Seufer)
3650 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3651 closures. (thanks to Thiemo Seufer)
3652 * minor incompatible change: eof selects abort in the debugger.
3653 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3654 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3656 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3657 deprecated, and will go away in a future revision of SBCL.
3658 * minor incompatible change: GC-ON and GC-OFF are no longer
3659 implemented with a counter, it does not matter how many times gc
3660 is switched on or off
3661 * bug fix: discriminating functions for generic function classes
3662 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3663 make invalid assumptions about method precedence order. (reported
3665 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3666 platforms. (thanks to Thiemo Seufer)
3667 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3668 * bug fix: correct pathname printing with printer escaping is on.
3669 (thanks to Kevin Reid)
3670 * bug fix: complex VOP definitions in "user-space" no longer trigger
3671 package locks. (reported by Zach Beane)
3672 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3673 for funcallable-instance functions, and is no different from
3675 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3676 characters in the current readtable. (reported by Nicholas Neuss)
3677 * bug fix: SUBTYPEP on various CONS types returns more a more
3678 accurate acknowledgment of its certainty.
3679 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3680 lists in some cases. This partially fixes bug 384.
3681 * flush all standard streams before prompting in the REPL and the
3683 * bug fix: signal handling and triggering gc do not conflict
3684 directly anymore, in particular a high frequency sb-sprof does
3685 not prevent gc from running
3686 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3687 approximation for timezone and DST information between the
3688 universal time epoch and the smallest negative 32-bit time_t.
3689 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3690 year 1899 so long as the encoded time is non-negative.
3691 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3692 the correct answer for non-constant rotate amounts when performing
3693 an inline 32-bit rotation.
3695 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3696 there is only one thread in the session
3697 ** bug fix: memory leak for streams created in one thread and
3698 written to in another
3699 ** bug fix: lockup when compiled with gcc4
3700 ** bug fix: race that allows the gc to be triggered when gc is
3702 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3703 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3705 ** bug fix: finished threads are gc'ed properly
3706 * fixed some bugs revealed by Paul Dietz' test suite:
3707 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3708 has arguments with a different set of applicable methods from
3709 the orignal arguments.
3710 ** The type error thrown by MAP now has a correct expected-type
3712 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3713 name a compiled function.
3714 ** Three MISC tests where a large bignum was improperly coerced to
3715 a float that couldn't represent that bignum during type
3716 derivation were fixed.
3717 ** SUBTYPEP can now handle types involving the negation of a
3718 list-form FUNCTION type.
3719 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3720 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3721 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3723 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3724 * New feature: Experimental support for bivalent streams: streams
3725 opened with :element-type :default now allow character and binary
3726 (unsigned-byte 8) I/O
3727 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3728 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3730 * bug fix: no more highly sporadic "couldn't check whether ~S is
3731 readable" when reading a stream and an interrupt hits in the middle
3732 of a select system call
3733 * compiler better recognizes complex arrays (reported by Eduardo
3735 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3736 for variables on SBCL built with linkage-tables. (reported by Luis
3738 * various error reporting improvements.
3739 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3740 (Thanks to Thiemo Seufer)
3741 * bug fix: nested reader invokations work correctly
3742 * bug fix: it is possible to have simultaneous references to foreign
3743 code and foreign data with the same name.
3745 ** added x86-64 support
3746 ** incompatible change: the threading api now works with thread
3747 objects instead of thread ids
3748 ** bug fix: threads are protected from signals and interruption when
3749 starting up or going down
3750 ** bug fix: a race where an exiting thread could lose its stack to gc
3751 ** bug fix: don't halt on infinite error in threads if possible
3752 ** fixed numerous gc deadlocks introduced in the pthread merge
3753 ** bug fix: fixed thread safety issues in read and print
3754 ** bug fix: debugger doesn't hang on session lock if interrupted at
3755 an inappropriate moment
3756 ** bug fix: run-program is now thread safe(r)
3757 ** bug fix: inner with-recursive-lock no longer releases the mutex
3758 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3759 * fixed some bugs revealed by Paul Dietz' test suite:
3760 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3761 EXPECTED-TYPE slots filled.
3762 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3764 ** MAKE-CONDITION accepts classes as type-designators.
3765 ** COMPILE may never return NIL.
3766 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3767 range before calling Unix time functions
3769 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3770 * numerous signal handling fixes to increase stability
3771 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3772 * minor incompatible change: we now correctly canonize default
3773 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3774 as per the MOP, rather than the historical (INITARG INITFUNCTION
3775 INITFORM). (reported by Bruno Haible)
3776 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3777 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3778 for more information.
3779 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3780 pathname is a directory pathname.
3781 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3782 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3784 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3785 :METACLASS argument in addition to a class name. (reported by
3786 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3787 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3788 (reported by Bruno Haible; patch from Gerd Moellmann)
3789 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3791 * bug fix: more cleanups to the floating point exception handling on
3792 x86-64 (thanks to James Knight)
3793 * bug fix: the compiler does not try to constant fold calls of
3794 COERCE and BIT-* functions when they return freshly constructed
3795 objects. (reported by Nikodemus Siivola and Paul Dietz)
3796 * optimization: improved the MIPS versions of generic (in the
3797 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3798 * optimization: direct conversion of (unsigned-byte 32) to floats on
3799 the PowerPC platform.
3800 * optimization: structure instances with raw slots now use less
3801 memory, and probably show better memory locality. (thanks to
3803 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3804 are treated as requests for stack allocation on the x86-64,
3805 Alpha-32, PPC and SPARC platforms.
3806 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3807 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3808 (thanks to Tony Martinez)
3810 ** gcing a dead thread can no longer lead to lockups
3811 ** threads block signals until they are set up properly
3812 ** errno is no longer shared by threads
3813 ** interrupt-thread restores the eflags register on x86
3814 ** fixed some lockups due to gc/thread interaction
3815 * fixed some bugs revealed by Paul Dietz' test suite:
3816 ** invalid dotted lists no longer raise a read error when
3817 *READ-SUPPRESS* is T
3818 ** signal an error if a symbol that names a declaration is used
3819 as the name of a type, or vice versa
3820 ** allow using the (declare (typespec var*)) abbreviation for
3821 (declare (type typespec var*)) with all type specifiers
3822 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3823 ** always return NIL from PPRINT-POP when OBJECT is NIL
3824 ** don't signal errors when pretty-printing malformed LABELS,
3825 FLET or MACROLET forms
3826 ** declarations in a DOLIST body are also in scope for the
3828 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3830 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3833 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3834 * fixed cross-compiler leakages that prevented building a 32-bit
3835 target with a 64-bit host compiler.
3836 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3837 opened with :IF-EXISTS :OVERWRITE.
3838 * fixed bug 281: error for an invalid qualifier in a short-form method
3839 combination method is not signalled until the faulty method is called.
3840 * bug fix: iteration variable type inferrer failed to deal with open
3841 intervals. (reported by Alan Shields)
3842 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3843 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3844 or more runtime options were provided to the sbcl binary.
3845 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3846 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3847 * optimization: there's now a fast-path for fixnum arguments in the
3848 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3849 * optimization: the code generated on x86-64 is more compact thanks
3850 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3851 * bug fix: floating-point exception handling now partly works on
3852 x86-64. (Thanks to James Knight)
3853 * improvement to the MIPS backend from Thiemo Seufer: C-style
3854 64-bit long long arguments and return values to alien functions
3856 * fixed some bugs revealed by Paul Dietz' test suite:
3857 ** the type-error signalled from WARN has a filled-in DATUM slot.
3858 ** the type-error required when a stream is not associated with
3859 a file has the stream as its datum.
3860 ** type-errors on single-floats on x86-64 no longer have
3861 :INVALID-OBJECT as the datum
3862 ** the type-errors signalled for invalid function names now have
3863 a correct expected type
3864 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3865 for structures defined with a :TYPE. Documentation strings for
3866 typed structures are no longer immediately discarded
3867 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3868 broadcast streams and synonym streams. FILE-LENGTH now also works
3869 on broadcast streams.
3871 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3872 * incompatible change: the --noprogrammer option, deprecated since
3873 version 0.7.5, has been removed. Please use the equivalent
3874 --disable-debugger option instead.
3875 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3877 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3878 inoperational for a while now) has been completely removed.
3879 * null lexical environments are now printed as #<NULL-LEXENV>,
3880 significantly reducing the amount of clutter in typical backtraces.
3881 * documentation on weak pointers, finalization, and after GC hooks
3882 has been added to the manual.
3883 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3884 as other specialized array types, is much faster. SUBSEQ and
3885 COPY-SEQ on such arrays have also been sped up.
3886 * optimization: EQL is now more efficient when at least other argument
3887 is known to be of type (OR FIXNUM (NOT NUMBER)).
3888 * fixed bug: the runtime is now less vulnerable to changes in the
3889 size of the SBCL object on OS X, and virtual memory is reserved for
3890 all spaces that need to be at a fixed address.
3891 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3892 * fixed bug: finalizers and after GC hooks that cause consing are now
3894 * fixed bug: compiler error messages and summaries are now printed to
3895 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3896 * fixed inference of the upper bound of an iteration variable.
3897 (reported by Rajat Datta).
3898 * fixed bug 211e: calling local functions with duplicated constant
3899 keyword argument no longer causes a bogus style warning about an
3901 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3902 ftype declaration to be disregarded. (reported by Dave Roberts)
3903 * fixed bug 373: caused by erronous compilation of references to alien
3904 variables in the runtime on ppc/darwin.
3905 * fixed bug 376: CONJUGATE type deriver.
3906 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3907 (reported by Baughn on #lisp)
3908 * a cross-compiler bug on non-x86 platforms has been identified and
3909 fixed. (thanks to Bruno Haible)
3910 * improvements to the MIPS runtime code for increased stability.
3911 (thanks to Thiemo Seufer)
3912 * increased the maximimum compact environment size to allow
3913 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3914 * partial workaround for bug 135: don't name the function we're
3915 calling for hairy cases of EVAL, so as not to accumulate one environment
3916 entry per call to EVAL. (reported by Kevin Reid)
3917 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3918 * optimization: type testing for non-vector arrays should be faster.
3919 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3921 * bug fix: setting 31st element of a bit vector to zero did not work
3923 * bug fix: redefining a class definition which failed due to a
3924 previous accessor / function clash now works (but see BUGS entry
3925 #380 for more problems in this area). (thanks to Zach Beane)
3926 * the long form of DEFINE-METHOD-COMBINATION disables method group
3927 checking when given a single method group with pattern *. (thanks
3929 * on x86 compiler supports stack allocation of results of simple
3930 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3931 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3932 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3933 * fixed some bugs related to Unicode integration:
3934 ** the restarts for recovering from input and output encoding
3935 errors only appear when there is in fact such an error to
3937 * fixed some bugs revealed by Paul Dietz' test suite:
3938 ** MISC.549 and similar: late transformation of unsafe type
3939 assertions into derived types caused unexpected code
3941 ** SCALE-FLOAT type deriver is less wrong.
3942 ** type derivers for EXP, LOG and similar functions compute result
3943 types for complex arguments better.
3944 ** (MISC.563) CONJUGATE type deriver works for very restricted
3946 ** out-of-line type testers for character strings are available.
3947 ** EQUAL compiler transform understands specialness of objects
3949 ** accessing double-floats stored on the stack now works on x86-64.
3950 ** debugger internals could sometimes create invalid lispobjs,
3951 resulting in GC crashes.
3952 ** MISC.548: type check weakening can convert required type into
3954 ** initialization forms for bindings are not in scope of free special
3957 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3958 * incompatible change: thread support for non-NPTL systems has
3959 been removed - locking is buggy and unreliable. A threaded
3960 SBCL build will now warn at startup and refuse to create
3961 new threads, unless futex support is detected in the kernel
3962 * incompatible change: the top level REPL now has only an ABORT
3963 restart associated with it, not TOPLEVEL and ABORT as it used to.
3964 TOP and TOPLEVEL are now available as debugger commands for
3965 returning to the top level.
3966 * incompatible change: forms evaluated in the REPL now use the
3967 global optimization policy.
3968 * incompatible change: user- and system-initialization files are
3969 no longer processed with LOAD, but by READ and EVAL; hence the
3970 global optimization policy, startup package, readtable, etc,
3972 * The .fasl file format number has been incremented because of
3973 various incompatible changes.
3974 * internal entry point details and argument counts no longer appear
3975 in backtraces unless explicitly requested by setting
3976 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3977 * built-in and standard functions no longer have names like "top
3978 level local call to FOO".
3979 * fixed bug 32: functions defined in non-null lexical environments
3980 now have more legible printed representation
3981 * fixed bug 33: functions defined in non-null lexical environemnts
3982 are now more amenable to inspection by INSPECT.
3983 * workaround for bug 354: XEPs no longer appear in backtraces unless
3984 explicitly requested.
3985 * fixed bug: receiving the signal which results from attempting to
3986 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3987 SIGBUS on other *BSDs) on architectures where the C stack is also
3988 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3989 to debugger confusion or wild instability. (reported by Cheuksan
3991 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3992 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3993 (reported by Lutz Euler)
3994 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3995 compiled code. (reported by Paul Dietz)
3996 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3997 specialized parameter to a method to something that is not TYPEP
3998 the specializer is now possible.
3999 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
4000 face of package deletion.
4001 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
4002 pathname. (reported by David Tolpin on c.l.l)
4003 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
4004 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
4005 STRING-STREAM and FILE-STREAM, respectively.
4006 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
4007 than previously; in addition, its test suite is now run on build.
4008 (thanks to Luke Gorrie)
4009 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
4010 * optimization: added a immediate representation for single-floats
4012 * fixed some bugs revealed by Paul Dietz' test suite:
4013 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
4014 ** attempting to create a package with a colliding nickname causes
4015 correctable errors to be signalled.
4016 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
4017 ** several x86-64 backend bugs related to sign-extension of immediate
4020 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
4021 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
4022 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
4024 * fixed loading of multiply forward-referenced layouts.
4025 (thanks to Cheuksan Wang)
4026 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
4027 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
4028 (see COMPILE-FILE documentation for details of :PRINT option)
4029 * fixed bugs 19 and 317: fixed-format floating point printing is
4030 more accurate. This also fixes a bug reported by Adam Warner
4031 related to the ~@F format directive.
4032 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
4034 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
4035 dispatch table if the from-char is a dispatch macro character.
4036 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
4037 by the wordsize no longer ignore the last word. (reported by Lutz
4039 * fixed bug in type checking of dynamic-extent variables. (reported
4041 * optimization: sequence traversal functions use their freedom to
4042 coerce function designators to functions.
4043 * optimization: code with many calls to CLOS methods specialized on
4044 CLOS classes has had redundant type checks removed.
4045 * optimization: added declarations to speed up operations that access
4046 the internal character database (for example STRING-UPCASE)
4047 * optimization: comparison operations between floats and sufficiently small
4048 fixnums no longer create extra rationals
4049 * fixed some bugs related to Unicode integration:
4050 ** portions of multibyte characters at the end of buffers for
4051 character-based file input are correctly transferred to the
4052 start of the buffer at the next read.
4053 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
4054 passing it through to OPEN.
4055 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
4056 argument given to internal calls to OPEN.
4057 ** the built-in comment readers (introduced by character sequences
4058 ";" and "#|") are more forgiving to encoding errors; they will
4059 STYLE-WARN and then attempt to resync the stream at a character
4060 boundary. (thanks to Teemu Kalvas)
4061 * fixed some bugs in the x86-64 port:
4062 ** Negative short int return values from c-calls are sign-extended
4064 ** The stack is aligned to 16-bytes for c-calls, as required by
4065 the ABI. (thanks to Cheuksan Wang)
4066 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
4067 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
4068 for enums. (thanks to Vincent Arkesteijn)
4069 ** Multiple small optimizations and bugfixes for floating point
4071 * fixed some bugs revealed by Paul Dietz' test suite:
4072 ** Space, Tab, Linefeed, Return and Page have the invalid
4073 secondary constituent character trait.
4074 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
4076 ** WITH-INPUT-FROM-STRING should only update the index place on
4078 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
4079 works more reliably.
4080 ** Bit-array operations (BIT-AND and similar) worked incorrectly
4081 with one-dimensional arrays with fill pointers.
4082 ** TYPE-OF failed on a complex with an integer realpart and a
4084 ** compiler failure during type inference for the code of form
4085 (IF (EQL X (THE ...)) ...) (MISC.535).
4087 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
4088 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
4089 platform. The port supports 61-bit fixnums, large memory spaces
4090 and reloading shared object files.
4091 * enhancement: saving cores with foreign code loaded is now
4092 supported on ppc/Darwin in addition to the previously supported
4094 * enhancement: the statistical profiler now walks deeper into the
4095 call stack for more meaningful call-graphs and accrued time
4096 reports (x86/x86-64 only). It also now reports time spent in
4098 * enhancement: it is now possible to trace most individual methods
4099 of a generic function in addition to tracing the generic function
4101 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
4103 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
4104 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
4105 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
4106 produces an error. (thanks to Vincent Arkesteijn)
4107 * bug fix: NAMESTRING on pathnames with :WILD components in their
4108 directories works correctly. (thanks to Artem V. Andreev)
4109 * fixed bug 125: compiler preserves identity of closures. (reported
4111 * bug fixed: functions with &REST arguments sometimes failed with
4112 "Undefined function" when compiled with (DEBUG 3). (reported by
4114 * bug fix: overflow during compiling of setting element of a bit
4115 vector with constant index and value. (reported by Timmy Douglas)
4116 * build fix: fixed the dependence on *LOAD-PATHNAME* and
4117 *COMPILE-FILE-PATHNAME* being absolute pathnames.
4118 * on x86 compiler partially supports stack allocation of dynamic-extent
4120 * GO and RETURN-FROM do not check the extent of their exit points
4121 when compiled with SAFETY 0.
4122 * fixed some bugs related to Unicode integration:
4123 ** encoding and decoding errors are now much more robustly
4124 handled; it should now be possible to recover even from invalid
4125 input or output to the terminal. (thanks to Teemu Kalvas)
4126 ** provided a first cut at implementing STRING-TO-OCTETS and
4127 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
4128 ** altered the SB-MD5 contributed module slightly, changing the
4129 interface just enough for it to be supportable for builds where
4130 lisp characters are not eight bits.
4131 * fixed some bugs revealed by Paul Dietz' test suite:
4132 ** the FORMATTER-generated functions for ~V[ conditionals require
4133 the correct number of arguments.
4134 ** READ-FROM-STRING returns the mandated second value when applied
4135 to displaced strings.
4136 ** the #\Rubout and #\Backspace characters are treated as invalid
4137 constituent characters by the tokenizer.
4139 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
4140 * new feature: reloading changed shared object files with
4141 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4142 * new feature: references to foreign variables and functions
4143 can now be compiled and loaded before the corresponding shared
4144 object file is loaded, as long as the foreign definitions are
4145 available at runtime.
4146 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
4147 supported. (thanks to Dan Debertin)
4148 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
4149 just keywords. (thanks to Vincent Arkesteijn)
4150 * fixed bug #331: structure-class instances corresponding to
4151 DEFSTRUCT forms are now created eagerly.
4152 * fixed bug #345: backtraces from calls to undefined functions work
4153 on x86 as well. Related bug #61 is now also partially fixed on x86
4154 (backtraces from throws to unknown catch tags.)
4155 * bug fix: lambda-list parsing is now stricter vrt. order and number
4156 of lambda-list keywords.
4157 * bug fix: as specified by AMOP, an error is signalled if a
4158 class-option appears multiple times in a DEFCLASS form. (reported
4160 * bug fix: RANDOM can be compiled when the compiler derives the type
4161 of its numeric argument as a disjoint set of small integers.
4162 (reported by Paul Dietz)
4163 * bug fix: starting a core saved with shared objects loaded when
4164 those objects are not available no longer causes threaded SBCL to
4165 hang. (reported by Sean Ross)
4166 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
4168 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
4169 argument, which must always be NIL. (reported by Kalle Niemitalo)
4170 * bug fix: printing 1.0d+23 no longer results in an error.
4171 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
4172 * bug fix: structure slot setters preserve evaluation order. (thanks
4174 * fixed some bugs related to Unicode integration:
4175 ** RUN-PROGRAM can allow its child to take input from a Lisp
4176 stream. (reported by Stefan Scholl)
4177 ** ASDF-INSTALL successfully downloads .tar.gz files in all
4178 locales. (reported by Ken Causey)
4179 * fixed some bugs revealed by Paul Dietz' test suite:
4180 ** INCF, DECF and REMF evaluate their place form as specified in
4182 ** FORMATTER expands ~{ ~} iteration directives with V or #
4183 parameters correctly.
4184 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4185 consequent uses no arguments correctly.
4186 ** the system has a partial understanding of the (COMPLEX RATIO)
4188 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4191 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4192 * new feature: a build-time option (controlled by the :SB-UNICODE
4193 keyword feature, enabled by default) for building the system with
4194 support for the entire 21-bit character space defined by the
4196 * new feature: the system now has rudimentary external-format
4197 support; the primary user-visible change at this time is that
4198 characters with the high bit set (such as lower-case-e-acute) will
4199 print correctly to a terminal in a UTF-8 environment.
4200 * minor incompatible change: BASE-CHAR no longer names a class;
4201 however, CHARACTER continues to do so, as required by ANSI.
4202 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4203 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4204 has been moved to the SB-EXT package (temporarily re-exported from
4206 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4207 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4209 * fixed bug #351: better error-handlind and reporting for malformed
4211 * fixed bug #350: bignum-printing is now more memory-efficient,
4212 allowing printing of very large bignums, eg. (expt 2 10000000).
4213 (reported by Bruno Haible)
4214 * fixed bug #302: better primitive-type selection for intersection
4216 * fixed bug #308: non-graphic characters now all have names, as
4217 required. (reported by Bruno Haible)
4218 * bug fix: redefining a class with different superclasses now correctly
4219 removes it from the direct-subclasses of its previous superclasses.
4220 (reported by David Morse)
4221 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4222 new value now works. (reported by Bruno Haible)
4223 * bug fix: correct canonicalization of multiple non-standard slot
4224 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4225 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4226 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4227 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4228 now exists, an signals an error.
4229 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4230 during macroexpansion for non-iteration variables as well. (reported
4231 by Bruno Haible for CMUCL)
4232 * bug fix: Cyclic structures and unprintable objects in compiler
4233 messages no longer cause errors. (reported by Bruno Haible)
4234 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4235 and READ-FROM-STRING all now return a primary value of NIL if
4236 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4237 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4238 (reported by Bruno Haible for CMUCL)
4239 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4240 do not designate a condition. (reported by Bruno Haible for
4242 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4243 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4244 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4245 permitting resolution in favour of any of the conflicting symbols.
4246 (reported by Bruno Haible for CMUCL)
4247 * bug fix: EQUAL compiler optimizations is less aggressive on
4248 strings which can potentially compare true despite having distinct
4249 specialized array element types.
4250 * bug fix: unit enumerations can be defined without dividing by
4251 zero. (thanks to Vincent Arkesteijn)
4252 * FORMAT compile-time argument count checking has been enhanced.
4253 (report from Bruno Haible for CMUCL)
4254 * a partial workaround for the bug 262: the compiler does not try to
4255 inline-expand a local function doing RETURN-FROM from a deleted
4256 BLOCK. (thanks to Peter Denno for the bug report and to David
4257 Wragg for the simple test case)
4258 * fixed some bugs revealed by Paul Dietz' test suite:
4259 ** RENAME-PACKAGE allows all package designators as new package
4261 ** constraint propagation and lambda variable substitution are
4262 more cautious in dealing with partially deleted code.
4263 ** compiler sometimes lost reoptimization passes.
4264 ** CERROR, given a condition as condition designator, passes its
4265 remaining arguments to the continue format control without
4267 ** Case-altering FORMAT directives work correctly on non-ASCII
4269 ** The REAL type specifier handles bounds outside the floating
4270 point ranges without signalling FLOATING-POINT-OVERFLOW.
4271 ** Functions with IR1-transformations can create intercomponent
4272 references to global functions.
4273 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4275 ** FORMAT ~R treats a nil value for its first parameter correctly.
4277 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4278 * enhancement: saving cores with foreign code loaded is now
4279 supported on x86/NetBSD and sparc/Linux in addition to the previously
4280 supported platforms.
4281 * bug fix: on some platforms repeated installations caused multiple
4282 copies of HTML documentation to be installed -- should not happen
4283 any more. (reported by Stefan Scholl)
4284 * bug fix: parsing self-recursive alien record types multiple times
4285 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4286 original patch by Helmut Eller for CMUCL)
4287 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4288 (thanks to Richard Kreuter)
4289 * bug fix: defining classes whose accessors are methods on existing
4290 generic functions in other (locked) packages no longer signals
4291 bogus package lock violations. (reported by François-René Rideau)
4292 * bug fix: special variables as DEFMETHOD parameters no longer have
4293 associated bogus type declarations. (reported by David Wragg and
4295 * bug fix: read-write consistency on streams of element-type
4296 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4297 * bug fix: redefiniton of the only method of a generic function with
4298 no DEFGENERIC no longer emits a full WARNING. In addition,
4299 redefinition of generic functions with no DEFGENERIC to an
4300 incompatible lambda list now signals an error. (thanks to Zach
4302 * bug fix: DEFGENERIC now works even when there's a function of the
4303 same name in an enclosing lexical environment. (thanks to Zach
4305 * fixed compiler failure, caused by instrumenting code during
4306 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4307 * optimization: added loop analysis and improved register allocation
4308 * fixed some bugs revealed by Paul Dietz' test suite:
4309 ** POSITION on displaced vectors with non-zero displacement
4310 returns the right answer.
4311 ** (SIMPLE-STRING) is a valid type specifier for sequence
4313 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4315 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4316 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4318 ** The justification version of the FORMAT ~< directive treats
4319 non-zero minpad parameter correctly.
4321 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4322 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4323 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4324 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4325 the supported interface.
4326 * new feature: Single-stepping of code compiled with DEBUG 2 or
4327 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4328 * new feature: saving cores with foreign code loaded is now
4329 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4330 Timothy Moore's work for CMUCL)
4331 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4332 parameters to * instead of NIL if no initform is supplied.
4333 (reported by Johan Bockgaard)
4334 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4335 correctly when FUNCALL appears as the car of the form. Note:
4336 despite this FUNCALL forms are not currently subject to
4337 compiler-macro expansion. (port of Raymond Toy's fix for the
4338 same from CMUCL, reported by Johan Bockgaard)
4339 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4340 (thanks for Teemu Kalvas)
4341 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4342 case instead of terminating the iteration (thanks for Julian
4343 Squires, Sean Champ and Raymond Toy)
4344 * bug fix: incorrect expansion of defgeneric that caused a style
4345 warning. (thanks for Zach Beane)
4346 * bug fix: slot accessor effective method computation works properly
4347 for classes with multiple non-standard applicable methods on
4348 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4349 * on x86 compiler supports stack allocation of results of LIST and
4350 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4351 CMUCL implementation by Gerd Moellmann)
4352 * fixed some bugs revealed by Paul Dietz' test suite:
4353 ** FORMAT strings with both the ~<~:;~> form of the justification
4354 directive and pretty-printing directives cause an error.
4356 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4357 * incompatible change: the internal functions
4358 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4359 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4360 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4361 instead of the old functions.
4362 * new feature: on platforms where "dladdr" is available foreign
4363 function names now appear in backtraces. (based on Helmut Eller's
4365 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4366 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4368 * documentation: ASDF manual is now distributed with SBCL.
4369 * bug fix: SBCL can now load its contributed modules with REQUIRE
4370 even if the system-provided entries have been removed from
4371 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4373 * bug fix: backtraces involving undefined functions or assembly
4374 routines are more informative. (thanks to Brian Downing)
4375 * bug fix: mutually referent alien structures now work correctly.
4376 (reported by Rick Taube)
4377 * bug fix: structures defined by WITH-ALIEN can be referred to
4378 within other definitions in the same WITH-ALIEN.
4379 * bug fix: division operators (MOD, TRUNCATE and the like) with
4380 constant zero divisors and integer dividends no longer generate
4382 * bug fix: provide default methods for INPUT-STREAM-P and
4383 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4384 * bug fix: improve the detection and resolution of MOP metacycles
4385 (where effective method computation depends on the generic function
4386 having its effective method computed). (reported by Bruno Haible)
4387 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4388 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4389 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4390 * bug fix: pathnames with relative directory components can be
4391 represented relative to default pathnames.
4392 * optimization: in taking the GCD of bignums, reduce the two bignums
4393 to approximately the same size (using Euclid's algorithm) before
4394 applying the more sophisticated binary GCD. (thanks to Juho
4396 * optimization: COUNT on bitvectors now operates word-at-a-time.
4397 * optimization: ASH with a positive, but not necessarily constant,
4398 (leftwards) shift, when in a modular context, is compiled to a
4400 * fixed some bugs revealed by Paul Dietz' test suite:
4401 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4402 if the corresponding argument is NIL.
4403 ** FORMAT directives accepting a minpad parameter treat negative
4405 ** literal commas as character parameters to FORMAT directives are
4407 ** literal spaces directly after ~<Newline> directives within a
4408 format-logical-block (~:< ~@:>) do not induce :FILL-style
4409 conditional newlines.
4410 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4411 as specified: it no longer includes conditional newlines).
4412 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4414 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4415 :PER-LINE-PREFIX argument does not evaluate to a string.
4417 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4418 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4419 the manual for details; for now, package locks can be disabled by
4420 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4421 if no major problems are found then it is likely that they will be
4422 compiled in unconditionally.
4423 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4424 unsupported operators on all platforms. To load a shared library
4425 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4426 object file, link it into a shared library outside of SBCL and
4427 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4429 * bug workaround: ROOM T and the GC were not working together
4430 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4431 reporting facility aren't preserved. That reporting has been
4432 disabled, so now until and unless someone figures out how to make it
4433 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
4434 * minor incompatible change: as threatened around sbcl-0.8.0, the
4435 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
4436 The symbols are also exported from SB-PCL for backwards
4437 compatibility, but more so than before SB-PCL should be treated as
4438 an implementation-internal package.
4439 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
4441 * the SB-SPROF contrib now works on (most) non-x86 architectures.
4442 It is known as of this release not to work on the Alpha, however.
4443 * fixed bug #167: errors signalled due to illegal syntax in method
4444 bodies are now more legible.
4445 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4446 designators and can hence be used with TYPEP.
4447 * fixed bug #333: CHECK-TYPE now ensures that the type error
4448 signalled, if any, has the right object to be accessed by
4449 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4450 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4451 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4453 * fixed bug #334: programmatic addition of slots using specialized
4454 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4455 and :ALLOCATION :CLASS slots.
4456 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4457 float exponents. (rereported by Peter Seibel)
4458 * fixed a bug: #\Space (and other whitespace characters) are no
4459 longer considered to be macro characters in standard syntax by
4460 GET-MACRO-CHARACTER.
4461 * fixed bug: initialization of condition class metaobjects no longer
4462 causes an instance of the condition to be created. (reported by
4464 * fixed bug: it is now possible to have slots such that
4465 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4466 description is neither :INSTANCE nor :CLASS.
4467 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4468 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4469 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4470 non-standard SLOT-DEFINITION-ALLOCATION values.
4471 * fixed bugs: various race conditions handling exiting threads.
4472 CL-PPCRE's thread torture test now passes.
4473 * fixed arguably-a-bug: GC time proportional to number of threads in
4474 system even when most of them are idle
4475 * optimization: improved performance of BIT and SBIT on bit-vectors.
4476 * .fasl file incompatibility: The fasl file version number has
4477 been incremented because of changes associated with package locks.
4479 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4480 * minor incompatible change: the system no longer provides
4481 optimization hints (conditions which are TYPEP
4482 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4483 mode; these hints are still emitted when higher SPEED optimization
4485 * new contrib module: a sampling profiler (profiling by statistical
4486 sampling, rather than by instrumenting functions) is available as
4487 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4488 * the behaviour of the standard function ED is now customizeable by
4489 third parties through a hook variable: see ED's documentation
4490 string for information on the protocol.
4491 * the compiler no longer emits efficiency notes for (FUNCALL X)
4492 when the type of X is uncertain under default optimization
4494 * fixed bug 276: mutating a binding of a specialized parameter to a
4495 method to something that is not TYPEP the specializer is now
4497 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4498 exhibit the required behaviour on the x86 platform. (thanks to
4499 Peter van Eynde, Eric Marsden and Bruno Haible)
4500 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4501 even for difficult arguments. (reported by Peter Graves)
4502 * fixed bug 141a: the backquote printer now descends quoted
4504 * fixed another bug in backquote printing: no more destructive
4505 modification of the form's list structure. (reported by Brian
4507 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4508 move between its address being taken and the call to
4509 interrupt_thread, fixing a crashing race condition.
4510 * the SB-POSIX contrib implementation has been adjusted so that it
4511 no longer exhibits ridiculously poor performance when constructing
4512 instances corresponding to C structs.
4514 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4515 * minor incompatible change: the sb-grovel contrib now treats C
4516 structures as alien (in the sense of SB-ALIEN) objects rather than
4517 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4518 has implications for memory management of client code
4519 (sb-grovel-returned objects must now be manually managed) and for
4520 type safety (alien objects now have full types).
4521 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4522 used to control emission of compiler diagnostics, rather than the
4523 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4524 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4525 quality should be considered deprecated.
4526 * install.sh now installs the user manual as well
4527 * (not quite a new documentable feature, but worth considering in
4528 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4529 beginnings of a semantically meaningful condition hierarchy is
4530 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4532 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4533 designator as the defaults argument.
4534 * fixed bug: Displaced arrays whose displaced-to array has become
4535 too small now cause ARRAY-DIMENSION to signal an error, providing
4536 for safer bounds-checking. (reported by Bruno Haible)
4537 * fixed bug: DEFCLASS slot definitions with identical :READER and
4538 :WRITER names now signal a reasonable error. (reported by Thomas
4540 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4542 * fixed bug: Invalid slot specification errors now print correctly.
4543 (thanks to Zach Beane)
4544 * fixed bug 320: Shared to local slot value transfers in class
4545 redefinitions now happen corrently from superclasses as
4546 well. (reported by Bruno Haible)
4547 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4549 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4550 improper lists correctly. (reported by Bruno Haible)
4551 * fixed bug 313: source-transform for <fun-name> was erroneously
4552 applied to a call of a value of a variable with name <fun-name>.
4553 (reported by Antonio Menezes Leitao)
4554 * fixed bug 307: The obsolete instance protocol ensures that
4555 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4556 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4557 remove dead unknown-values globs from the middle of the stack.
4558 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4559 easier to resume long computations after using *BREAK-ON-SIGNALS*
4560 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4561 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4562 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4563 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4564 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4565 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4567 * fixed a (fairly theoretical) bug in string printing: if
4568 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4569 does not have array-element-type equal to the most general string
4571 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4572 function name. (thanks to Nikodemus Siivola)
4573 * fixed bug: compile-time format string checker failed on
4574 non-closed ~{. (reported by Thomas F Burdick)
4575 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4576 don't warn on legal loop code involving more than one aggregate
4577 boolean. (thanks to Nikodemus Siivola)
4578 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4579 in keyword position to MAKE-PACKAGE was not being reported as
4581 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4582 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4584 * fixed bugs 280 and 312: the checking for multiple definitions in a
4585 file is less likely to become confused by uses of inline
4587 * fixed bug: the #S reader macro performs the keyword coercion
4588 specified for slot names. (reported by Kalle Niemitalo)
4589 * fixed bug: lambda lists may contain symbols whose names start with
4590 & but are not lambda-list-keywords; their occurrence triggers a
4592 * fixed bug 321: define-method-combination argument lambda lists do
4593 not cause invalid code to be generated when &optional or &aux
4594 variables have default values. (reported by Bruno Haible)
4595 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4596 have CLOS classes; this appears also to have fixed reported
4597 instability in stack exhaustion detection.
4598 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4599 MUFFLE-WARNING when no associated restart is present is now
4601 * optimization: rearranged the expansion of various defining macros
4602 so that each expands into only one top-level form in a
4603 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4605 * optimization: used a previously little-used slot in symbols to
4606 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4608 * fixed some bugs revealed by Paul Dietz' test suite:
4609 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4611 ** Fixed an optimization bug related to inheritance of initforms
4612 from local to shared slots.
4613 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4614 ** CAST optimizer forgot to flush argument derived type.
4615 ** print/read consistency on floats is now orders of magnitude
4616 more likely. (thanks also to Bruno Haible for a similar report
4618 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4619 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4620 for objects of type REAL. Make it so.
4621 ** SXHASH is specified (infelicitously) to respect similarity,
4622 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4623 it so. (thanks to Markus Ziegler)
4624 ** on the Alpha, the compiler succeeds in compiling functions
4625 returning a known number of arguments greater than 63.
4626 ** fixed handling of invalid NIL arguments in keyword position
4628 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4630 ** provided a readably-printable representation for RANDOM-STATE
4632 ** ensured that pathnames, where they have a namestring, always
4633 print using #P"..." syntax.
4635 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4636 * Support for the forthcoming 2.0 version of the NetBSD kernel
4637 running on x86 hardware has been added. (thanks to Perry
4638 E. Metzger most immediately, and others for their past work)
4639 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4640 current release version; SBCL's OpenBSD support had been broken
4641 since about the time of OpenBSD's switch to ELF binary format.)
4642 * [placeholder for DX summary]
4643 ** user code with &REST lists declared dynamic-extent, under high
4644 speed or space and low safety and debug optimization policy.
4645 * The manual has been converted to Texinfo format and the debugger
4646 chapter from the cmucl manual has been added.
4647 * A facility has been added to extract documentation strings from
4648 sbcl and store them as Texinfo-formatted snippets for inclusion in
4649 the manual (via Texinfo's @include directive)
4650 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4651 the test case to Dave Roberts)
4652 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4653 pointers. (reported by Sean Ross)
4654 * bug fix: PROFILE output is printed nicely even for large numerical
4655 values. (thanks to Zach Beane)
4656 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4657 greater than 32 handle EOF correctly.
4658 * bug fix: on X86 an immediate argument of the IMUL instruction is
4659 correctly printed in disassembly. (thanks to Lutz Euler)
4660 * bug fix: class slots in redefined classes preserve their old
4661 values. (thanks to Bruno Haible and Nikodemus Siivola)
4662 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4663 succeeds. (reported by Marco Baringer)
4664 * fixed some bugs revealed by Paul Dietz' test suite:
4665 ** READ-SEQUENCE now works on ECHO-STREAMs.
4666 ** RATIONALIZE works more according to its specification. (thanks
4669 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4670 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4671 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4672 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4673 should matter to you only if you rebind the printer control
4674 variables and then find you want different bindings in the
4675 debugger than in the ordinary execution of your program.)
4676 * The runtime build system has been tweaked to support building
4677 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4678 assembler and linker. (thanks to Nikodemus Siivola)
4679 * Unbound, undefined, undeclared variables now trigger full
4680 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4681 more often programmer error than deliberate exploitation of undefined
4683 * optimization: the hash algorithm for strings has changed to one
4684 that is less vulnerable to spurious collisions. (thanks to Juho
4686 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4687 needless bounds checking. (thanks to Juho Snellman)
4688 * optimization: implemented multiplication as a modular
4689 (UNSIGNED-BYTE 32) operation on the PPC backend.
4690 * fixed some bugs revealed by Paul Dietz' test suite:
4691 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4693 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4694 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4695 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4697 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4699 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4701 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4702 their output stream on EOF from read.
4703 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4704 have been read to end-of-file.
4705 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4707 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4708 description of determination of which consecutive characters
4710 ** Printing the "Space" character with escaping on now yields "#\\ ",
4711 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4712 ** Reading floating-point numbers with *READ-BASE* set to a number
4713 less than 10 works correctly.
4714 ** Reading floating-point numbers with *READ-BASE* set to a number
4715 more than 10 works correctly.
4716 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4717 the readtable currently in effect.
4719 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4720 * minor incompatible change: parsing of namestrings on a physical
4721 (Unix) host has changed; numbers after the final #\. in a
4722 namestring are no longer interpreted as a version field. This is
4723 intented to be largely invisible to the user, except that the
4724 meaning of the namestring "*.*.*" has changed: it now refers to a
4725 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4726 should usually be replaced by
4727 (make-pathname :name :wild :type :wild :version :wild)
4728 with the added benefit that this is more likely to be portable.
4729 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4730 option to OPEN now signals an error if the file being opened
4731 exists; this may have an impact on existing code.
4732 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4733 signals received, on the PowerPC platforms (both Linux and
4734 Darwin). (thanks to Pierre Mai for pointing out the location of
4736 * several fixes on OS X: The system now builds and runs cleanly on
4737 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4738 (thanks to Brian Mastenbrook)
4739 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4740 second-resolution: integer multiples of 1/3600 between -24 and 24.
4741 (thanks to Vincent Arkesteijn)
4742 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4743 type when called with 1 argument; PEEK-CHAR checked type of
4744 PEEK-TYPE only after having read first character from a
4745 stream. (reported by Peter Graves)
4746 * bug fix: the garbage collector now has much better locality
4747 behaviour, and in particular no longer treats all memory as being
4748 exhausted when many small objects point to each other in a deeply
4750 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4751 recognized as being TYPEP their class.
4752 * bug fix: the PUSHNEW documentation string has been corrected.
4753 (thanks to Vincent Arkesteijn)
4754 * bug fix: defaulting of the value for the last of an atypically
4755 large number of multiple values being bound was not being
4756 performed correctly on the Alpha or PPC platforms
4757 * optimization: implemented multiplication as a modular
4758 (UNSIGNED-BYTE 32) operation on the x86 backend.
4759 * optimization: SEARCH on simple-base-strings can now be open-coded.
4760 (see also contrib/compiler-extras.lisp for inspiration for
4761 teaching the compiler about the Boyer-Moore algorithm).
4762 * value, returned by MAX (and MIN) called with several EQUALP, but
4763 not EQL, arguments now does not depend on compiler settings.
4764 * fixed some bugs revealed by Paul Dietz' test suite:
4765 ** in stack analysis liveness information is propagated from
4766 non-local entry points.
4767 ** pathwise CAST removing failed when the CAST node did not start
4769 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4770 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4772 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4773 host is already defined.
4774 ** RENAME-FILE works on streams instead of signalling an internal
4776 ** PEEK-CHAR uses the current readtable when determining whether
4777 or not a character is whitespace.
4778 ** MERGE-PATHNAMES handles the case when the pathname does not
4779 specify a name while the default-pathname specifies a version.
4780 ** Pathnames now stand a better chance of respecting print/read
4782 ** Attempting to use standardized file system operators with a
4783 pathname with invalid :DIRECTORY components signals a
4785 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4787 ** DIRECTORY on logical pathnames is more correct.
4788 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4789 signal a TYPE-ERROR if their argument is not a stream.
4790 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4791 designator argument does not designate a stream.
4792 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4793 examining the synonym.
4794 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4796 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4797 element-type larger than ([UN]SIGNED-BYTE 32).
4799 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4800 * When built with the :SB-FUTEX feature, threaded builds now take
4801 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4802 for faster/more reliable mutex and condition variable support.
4803 * Incompatible change (but one you probably shouldn't have been using
4804 anyway): the interface and code for arbitrating between multiple
4805 threads in the same user session has been redesigned.
4806 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4807 error when called without an explicit environment argument.
4808 (thanks to Nikodemus Siivola)
4809 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4810 confused about their position. (thanks to Adam Warner and Gerd
4812 * bug fix: Pretty printing backquoted forms with unquotations in the
4813 argument list position of various code constructs such as LAMBDA
4814 now works correctly. (reported by Paul Dietz)
4815 * bug fix: Pretty printing unquotations no longer loses all
4816 stream position information.
4817 * optimization: performance of string output streams is now less
4818 poor for multiple small sequence writes.
4819 * optimization: performance of CSUBTYPEP in the presence of complex
4820 expressions involving CONS and NOT many times has been improved.
4821 (reported by Paul Dietz)
4822 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4824 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4825 streams for the REPL, for the debugger, and so on. (thanks to
4827 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4828 * fixed some bugs revealed by Paul Dietz' test suite:
4829 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4830 is ignored if it is too small, rather than propagating through
4831 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4832 ** extremely complex negations of CONS types were not being
4833 sufficiently canonicalized, leading to inconsistencies in
4835 ** VALUES tranformer lost derived type.
4837 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4838 * fixed a bootstrapping bug: the build process no longer assumes
4839 that the various BOOLE-related constants have the same value in
4840 host and target lisps. (noted by Paul Dietz' test suite on an
4841 SBCL binary built from CLISP)
4842 * The system can now be dynamically linked on the MIPS platform,
4843 which enables dynamic loading of foreign code from Lisp. (thanks
4844 to Ralf Baechle for discussions on the MIPS ABI)
4845 * The system now records debugging information for its own source
4846 files in a filesystem-position-independent manner, relative to
4847 the "SYS" logical host.
4848 * fixed a compiler bug: MV-LET convertion did not check references
4849 to the "max args" entry point. (reported by Brian Downing)
4850 * tweaked disassembly notes to be less confident about proclaiming
4851 some instruction as an LRA. (thanks to Brian Downing)
4852 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4853 now each have their own history, command character, and other
4854 characteristics. (thanks to David Lichteblau)
4855 * fixed some bugs revealed by Paul Dietz' test suite:
4856 ** compiler failure in compiling LOGAND expressions including a
4858 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4859 shift greater than 32.
4860 ** FLUSH-DEST did not mark blocks for type check regeneration.
4861 ** HANDLER-CASE failed to accept declarations in handler clauses
4862 in some circumstances.
4864 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4865 * New code in contrib/sb-introspect (still probably not entirely
4866 stable yet) provides some support for smart Lisp development
4867 environments like SLIME.
4868 * The conditions signalled for errors occurring when loading .fasl
4869 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4870 in a way which should help ASDF recover gracefully.
4871 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4872 stuff has been cleaned up. If you code contrib/ stuff, this might
4873 affect you, and you can look at contrib/README, contrib/STANDARDS,
4874 and/or the 0.8.4.27 diff to check.
4875 * In full calls the compiler now does not generate checks for declared
4876 argument types for all arguments.
4877 * various threading fixes
4878 ** and some experimental patches which didn't make it into
4879 the main tree for this release, but which are shipped in
4880 contrib/experimental-thread.patch as a possible fix for some
4881 failures (deadlock, spinning...) in GC-intensive multithreaded
4883 * fixed PPC build problem (source code incompatibility of different
4884 library versions): added offsetof() hackery which attempts to divine
4885 where glibc maintainers put uc_mcontext today
4886 * fixed bug 282: compiler does not trust type assertions while passing
4887 arguments to a full call.
4888 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4889 &OPTIONAL VALUES type parameter.
4890 * fix bug 214: algorithm for noting rejected templates is now more
4891 similar to that of template seletion. (also reported by rydis on
4893 * fixed bug 141b: printing backquoted information readably and prettily
4894 inserts a space where necessary.
4895 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4896 (CHARACTER 10) are now reported as errors, rather than propagated
4897 as unknown types. (reported by piso on #lisp)
4898 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4899 with values NIL and :ERROR. (thanks to Milan Zamazal)
4900 * fixed bug 191c: CLOS now does proper keyword argument checking as
4901 described in CLHS 7.6.5 and 7.6.5.1.
4902 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4903 longer raise an error; further, using a list as a for-as-arithmetic
4904 counter now raises a meaningful error.
4905 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4906 now understood by sequence creation functions such as MAKE-SEQUENCE
4908 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4909 a STRING-INPUT-STREAM.
4910 * compiler enhancement: SIGNUM is now better able to derive the type
4912 * type declarations inside WITH-SLOTS are checked. (reported by
4914 * fixed some bugs revealed by Paul Dietz' test suite:
4915 ** incorrect optimization of TRUNCATE for a positive first
4916 argument and negative second.
4917 ** compiler failure in let-convertion during flushing dead code.
4918 ** compiler failure while deriving type of TRUNCATE on an
4919 interval, containing 0.
4920 ** ASH of a negative bignum by a negative bignum count now returns
4922 ** intersection of CONS types now canonicalizes properly, fixing
4923 inconsistencies in SUBTYPEP.
4925 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4926 * incompatible change: The --disable-debugger command line
4927 option now clobbers the debugger at a more fundamental
4928 level, by redefining #'INVOKE-DEBUGGER instead of by
4929 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4930 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4931 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4932 enter the debugger REPL and then suffer recursive errors
4933 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4934 while under the new system, BREAK in --disable-debugger mode
4935 terminates the system just as an unhandled error would.
4936 * fixed compiler performance when processing loops with a step >1;
4937 * bug fix: DOCUMENTATION now retrieves generic function
4938 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4939 support has been systematized, and now supports the methods
4940 specified by ANSI, along with a default method and a method for
4941 slot documentation. (reported by Nathan Froyd)
4942 * bug fix: effective methods associated with a generic function are
4943 no longer cached over a change of that generic function's method
4944 combination. (reported by Andreas Fuchs)
4945 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4946 names a non-existent directory. (thanks to Andreas Fuchs)
4947 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4948 the PPC platform, lead to stack corruption; this has been fixed.
4949 (reported by Rainer Joswig)
4950 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4951 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4952 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4953 arithmetic in general, is now much more reliable on the PPC
4955 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4956 platform now returns the right answer.
4957 * optimization: restored some effective method precomputation in
4958 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4959 precomputation is now tunable.
4960 * optimization: compiler-internal data structure use has been
4961 reviewed, and changes have been made that should improve the
4962 performance of the compiler by about 20%.
4963 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4964 simple-base-strings and simple-bit-vectors is improved.
4965 * optimization: the optimization of 32-bit logical and arithmetic
4966 functions introduced in version 0.8.3 on the x86 has been
4967 implemented on the mips, ppc and sparc platforms; an
4968 implementation of the same facility, but for 64-bit arithmetic,
4969 has been added for the alpha.
4970 * microoptimization: the compiler is better able to make use of the
4971 x86 LEA instruction for multiplication by constants.
4972 * bug fix: in some situations compiler did not report usage of
4973 generic arithmetic in (SPEED 3) policy.
4974 * bug 145b fix: compiler used wrong type specifier while converting
4975 MEMBER-types to numeric.
4976 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4978 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4979 index argument now works properly on the Alpha platform.
4980 * bug fix: floating point exception treatment on the Alpha platform
4982 * bug fix: FILE-POSITION works much better on string input and
4983 output streams. (thanks to Nikodemus Siivola)
4984 * bug fix: many threading/garbage collection symptoms sorted.
4985 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4986 might be pseudo-atomic.
4987 * internal change: Stopping for GC is now done with signals not
4988 ptrace. GC is now done in whichever thread wanted it, instead of
4990 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4992 * bug fix: result form in DO is not contained in the implicit
4994 * incompatible change: ICR structure is changed; the value part of
4995 CONTINUATION is now called LVAR; corresponding functions are
4996 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4997 * added type deriver for ISQRT (thanks to Robert E. Brown).
4998 * bug fix: better support for loading from the command line when an
4999 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
5001 * fixed some bugs revealed by Paul Dietz' test suite:
5002 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
5003 ** ROUND and FROUND now give the right answer when given very
5004 small float arguments.
5005 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
5007 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
5008 ** (GCD 0 <negative-integer>) returned <negative-integer>.
5009 ** LCM should return a non-negative integer.
5010 ** PARSE-INTEGER returned the index of a terminator instead of the
5011 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
5012 ** PARSE-INTEGER returned an incorrect index being applied to a
5014 ** LCM with two arguments of 0 returns 0 rather than signalling
5016 ** unsigned addition of a 32-bit constant with the high bit set no
5017 longer causes an internal compiler error on the x86.
5018 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
5019 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
5020 with negative last argument.
5021 ** byte specifiers with zero size and position no longer cause
5022 an error during type derivation.
5023 ** bignum multiplication on the Alpha platform now returns the
5025 * porting: The system now builds on SuSE AMD64, although it still
5026 generates a 32-bit binary.
5027 * .fasl file incompatibility: The fasl file version number has
5028 been incremented (because of the changes to internal compiler
5029 data structures referred to above).
5031 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
5032 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
5033 more accurately, on the Darwin kernel running on PowerPC hardware.
5034 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
5035 * Compiler code deletion notes now signal a condition of type
5036 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
5037 an associated MUFFLE-WARNING restart.
5038 * The compiler now performs limited argument count validation of
5039 constant format strings in FORMAT, and where appropriate in ERROR,
5040 CERROR and WARN. (thanks to Gerd Moellmann)
5041 * New ASDF-INSTALL contrib can be used for automatic download and
5042 installation of third-party Lisp code from CCLAN or other sites
5044 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
5045 which forces another thread to execute a function supplied by the
5047 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
5048 now accept and act upon their :ELEMENT-TYPE keyword argument.
5049 (reported by Martin Atzmueller, Edi Weitz)
5050 * bug fix: FILE-POSITION now accepts position designators up to
5051 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
5052 is the greater. (thanks to Patrik Nordebo)
5053 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
5054 Kalle Olavi Niemitalo)
5055 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
5056 printable. (reported by Eric Marsden)
5057 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
5058 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
5059 * x86 bug fix in control stack exhaustion checking: now shows backtrace
5060 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
5061 (thanks to Stig Sandoe)
5062 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
5063 UNREAD-CHAR now correctly includes the unread character in the
5064 target sequence. (thanks to Gerd Moellmann)
5065 * bug fix in threaded builds: the system can now be suspended and
5066 resumed by shell job control with minimal disruption.
5067 * bug fixes in times and timezones >2038AD
5068 * better handling of "where is GNU make?" problem in build scripts
5069 (thanks to Nikodemus Siivola)
5070 * new optimization: inside a named function any reference to a
5071 function with the same name is considered to be a self-reference;
5072 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
5073 optimization quality.
5074 * new optimization on x86: logical functions and + now have
5075 optimized (UNSIGNED-BYTE 32) versions, which are automatically
5076 used when the result is truncated to 32 bits.
5077 * VALUES declaration is partially enabled.
5078 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
5079 * fixed some bugs revealed by Paul Dietz' test suite:
5080 ** The system now obeys the constraint imposed by
5081 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
5082 types form a lattice under type intersection.
5083 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
5084 ** ASSOC now ignores NIL elements in an alist.
5085 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
5086 and (1+ MOST-POSITIVE-FIXNUM) answers.
5087 ** The addition of a method with invalid qualifiers to a generic
5088 function does not cause an error to be signalled immediately;
5089 a warning is signalled, and the error is generated only on
5090 calling the generic function.
5091 * changed .fasl file version number, in part to add type codes for
5092 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
5093 obscure ANSI requirements
5095 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
5096 * fixed bug 148: failure to inline-expand a local function left
5097 garbage, confusing the compiler.
5098 * fixed bugs 3cd: structure slot readers perform type check if the
5099 slot can have an invalid value (i.e. it is either not initialized
5100 or can be written with a less specific slot writer).
5101 * bug fix: the compiler now traps array references to elements off
5102 the end of an array; previously, the bounds checking in some
5103 circumstances could go off-by-one.
5104 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
5106 * type declarations for array element types now obey the description
5107 on the CLHS page "Declaration TYPE", as per discussions on
5108 sbcl-help around 2003-05-08. This means that a declaration
5109 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
5110 declaration, all references to BAR will be asserted or assumed
5111 (with THE, so dependent on compiler policy) to involve objects of
5112 type FOO. Note that no such declaration is implied in
5113 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
5114 * declared types of functions from the "Conditions"
5115 chapter. (reported by Paul Dietz)
5116 * bug fix: CERROR accepts a function as its first argument.
5117 * bug fix: NTH an NTHCDR accept a bignum as index
5118 arguments. (reported by Adam Warner)
5119 * optimization: character compare routines now optimize comparing
5120 against a constant character. (reported by Gilbert Baumann)
5121 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
5122 argument now works properly on the MIPS platform.
5123 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
5124 * repeated evaluation of the same DEFSTRUCT, a slot of which is
5125 declared to have a functional type, does not cause an error
5127 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
5128 many :DEFAULT-INITARGS. (reported by Istvan Marko)
5129 * fixed bug: if last continuation of a deleted block has a
5130 destination, this destination should be deleted too. (reported by
5132 * fixed a bug in the bootstrap process: the host compiler's values
5133 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
5134 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
5135 test case from Patrik Nordebo)
5136 * improved the ability of the disassembler on the PPC platform to
5137 provide helpful disassembly notes.
5138 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
5139 the class in more cases than previously.
5140 * bug fix: FILE-POSITION now understands :START and :END for
5141 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
5142 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
5143 8) data. (thanks to David Lichteblau)
5144 * bug fix: it is possible to add a method to a generic function
5145 without lambda list.
5146 * bug fix: reader failed to signal END-OF-FILE inside an
5147 object representation. (reported by Nikodemus Siivola)
5148 * fixed some bugs revealed by Paul Dietz' test suite:
5149 ** LAST and [N]BUTLAST should accept a bignum.
5150 ** condition slot accessors are methods.
5151 ** (VECTOR NIL) is a subtype of STRING.
5153 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
5154 * minor incompatible change: some nonsensical specialized lambda
5155 lists (used in DEFMETHOD) which were previously ignored now signal
5157 * minor incompatible change: the system is now aware of the types of
5158 variables in the COMMON-LISP package, and will signal errors for
5159 most violations of these type constraints (where previously they
5160 were silently accepted).
5161 * minor incompatible change: COMPILE-FILE now uses the freedom
5162 afforded (ANSI 3.2.2.3) to use derived function types for
5163 functions defined in the same file. This also permits the system
5164 to warn on static type mismatches and function
5165 redefinition. (Currently it does not work with high DEBUG level.)
5166 * minor incompatible change: VALUES declaration is disabled.
5167 * When issuing notes, the compiler now signals a condition of type
5168 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
5169 restart for use in user handlers. It is expected that the
5170 COMPILER-NOTE condition will eventually become a condition
5171 supertype to a hierarchy of note types, which will then be
5172 handleable in a similar fashion. However, at the moment, no such
5173 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
5174 but it's an implementation detail, not a classification for the
5176 * Changes in type checking closed the following bugs:
5177 ** type checking of unused values (192b, 194d, 203);
5178 ** template selection based on unsafe type assertions (192c, 236);
5179 ** type checking in branches (194bc).
5180 * A short form of VALUES type specifier has ANSI meaning (it has
5181 increased the number of situations when SBCL cannot perform type
5183 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5184 keywords or constants is permissible.
5185 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5186 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5187 classes. (thanks to Antonio Martinez)
5188 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5189 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5190 argument to a pretty-print stream. Instead, it leaves any such
5191 operations to DESCRIBE-OBJECT methods.
5192 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5194 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5195 lambda lists. (thanks to David Lichteblau)
5196 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5197 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5198 (thanks to Gerd Moellmann)
5199 * fixed bug 246: increased compilation speed of long
5200 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5202 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5204 * DEFCONSTANT now throws a condition of type
5205 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5206 constant to a non-EQL value; CONTINUE and ABORT restarts
5207 respectively change and preserve the value.
5208 * fixed bug 63: The code walker, part of the implementation of CLOS,
5209 is now better at handling symbol macros.
5210 * bug fix: There is no longer an internal implementation type named
5211 CL:LENGTH. (reported by Raymond Toy)
5212 * bug fix: In macro-like defining macros/special operators the
5213 implicit block does not enclose the lambda list.
5214 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5215 enclosed in parentheses) are not suitable as type specifiers, and
5216 their use properly signals an error now.
5217 * bug fix: An argument count mismatch for a type specifier in code
5218 being compiled no longer causes an unhandled error at compile
5219 time, but signals a compile-time warning.
5220 * fixed simple vector readable printing
5221 * bug fix: DESCRIBE takes more care over whether the class
5222 precedence list slot of a class is bound before accessing it.
5223 (reported by Markus Krummenacker)
5224 * bug fix: FORMATTER can successfully compile pretty-printer format
5225 strings which use variants of the ~* directive inside.
5226 * bug fix: SEARCH now applies its TEST predicate to the elements of
5227 the arguments in the correct order. (thanks to Wolfhard Buss)
5228 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5229 in type inference. (thanks to Robert E. Brown)
5230 * bug fix: Reading in symbols with an explicit package name of ""
5231 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5232 * fixed some bugs revealed by Paul Dietz' test suite:
5233 ** NIL is now allowed as a structure slot name.
5234 ** Arbitrary numbers, not just REALs, are allowed in certain
5235 circumstances in LOOP for-as-arithmetic clauses.
5236 ** Multiple class redefinitions before slot access no longer
5237 causes a type error.
5238 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5239 association between the name and a class.
5240 ** Generic functions with non-standard method-combination and over
5241 five methods all of which return constants no longer return NIL
5242 after the first few invocations. (thanks to Gerd Moellmann)
5243 ** CALL-NEXT-METHOD with no arguments now passes the original
5244 values of the arguments, even in the presence of assignment.
5245 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5247 ** DISASSEMBLE works with closures and funcallable instances.
5248 ** ADD-METHOD now returns the generic function, not the new method.
5249 ** FIND-METHOD signals an error if the lengths of the specializers
5250 is incompatible with the generic function, even if the ERRORP
5252 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5253 which its argument is a member.
5254 ** DEFCLASS only redefines the class named by its class-name
5255 argument if that name is the proper name of the class;
5256 otherwise, it creates a new class.
5257 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5258 of the UNBOUND-SLOT condition to the name of the slot.
5259 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5260 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5261 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5262 SLOT-MAKUNBOUND in the specified fashion.
5264 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5265 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5266 cross-compilation host. As a consequence, we can now bootstrap our
5267 way up to SBCL starting with a bare gcc toolchain and human-readable
5268 source code (first the source to CLISP, then the source to SBCL).
5269 * A contributed module containing a partial implementation of the
5270 simple-streams interface has been included. (thanks to Rudi
5272 * A contributed module implementing the RFC1321 Message Digest
5273 Algorithm, known as MD5, has been included.
5274 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5275 no longer has any effect, as the code controlled by this feature
5276 has been deleted. (As far as we know, no-one has ever built using
5277 this feature, and its semantics were confused in any case).
5278 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5279 work on conditions (as required by the ANSI specification),
5280 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5281 expected behaviour on conditions. Users should note, however,
5282 that such behaviour is not required by the ANSI specification,
5283 and so use of this behaviour may render their code unportable.
5284 * fixed some bugs revealed by Paul Dietz' test suite:
5285 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5287 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5288 ** SXHASH on condition objects no longer returns NIL.
5289 ** :ALLOCATION :CLASS slots are better treated; their values are
5290 updated on class redefinition, and initforms inherited from
5291 superclasses are applied.
5292 ** REMOVE-METHOD returns its generic function argument even when
5293 no method was removed.
5294 ** SHARED-INITIALIZE now initializes the values of the requested
5295 slots, including those with :ALLOCATION :CLASS.
5296 ** ALLOCATE-INSTANCE now works on structure classes defined via
5297 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5299 ** SLOT-EXISTS-P now works on conditions, as well as structures
5301 ** MAKE-LOAD-FORM now has the required methods on
5302 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5303 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5304 keyword, and now implements the SLOT-NAMES argument.
5305 ** methods with &OPTIONAL arguments no longer allow too many
5306 arguments to be passed in the call without error.
5307 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5308 option is consistent with the required arguments of the generic
5309 function lambda list.
5310 * bug fix: REQUIRE accepts a string designator. (Thanks to
5312 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5313 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5314 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5315 * bug fix: The compiler now checks for duplicated variables in macro
5317 * bug fix: SETQ on globals returns the correct value.
5318 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5319 not a COMPILER-ERROR (followed by some other strange error on
5320 choosing the CONTINUE restart).
5321 * bug fix: make.sh and friends are now more consistent in the way that
5322 they look for GNU "make".
5324 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5325 * experimental native threads support (on x86 Linux >=2.4 only).
5326 This is not compiled in by default: you need to add :SB-THREAD to
5327 the target features. See the "Beyond ANSI" chapter of the manual
5329 * fix for longstanding nonANSIism: The old distinction between
5330 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5331 The return value from CL:FIND-CLASS is now a CLOS class, and
5332 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5333 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5334 * An interface to the MetaObject Protocol, as described in Kiczales,
5335 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5336 MIT Press, 1991, is available from the SB-MOP package.
5337 * incompatible change: the SB-PCL package should now be considered
5338 a private implementation detail, and no longer a semi-private MOP
5340 * minor incompatible change: due to rearrangement for threads, the
5341 control stack and binding stack are now allocated at arbitrary
5342 addresses instead of being hardcoded per-port. Users affected by
5343 this probably have to be doing advanced things with shared
5344 libraries, and will know who they are.
5345 * minor incompatible change: Previously, all --eval forms used were
5346 processed with READ before any of them were processed with EVAL.
5347 Now each --eval form is processed with both READ and EVAL before
5348 the next --eval form is processed. (Thus package operations like
5349 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5350 work as the user might reasonably expect.)
5351 * minor incompatible change: *STANDARD-INPUT* is now only an
5352 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5354 * minor incompatible change: Y-OR-N-P is now character-oriented,
5355 not line oriented. Also, YES-OR-NO-P now works without errors.
5356 (thanks to Antonio Martinez)
5357 * sb-aclrepl module improvements: an integrated inspector, added
5358 repl features, and a bug fix to :trace command.
5359 * Known functions, which cannot be open coded by the backend, are
5360 considered to be able to check types of their arguments. (fixing
5361 a bug report by Nathan J. Froyd)
5362 * fixed a bug in computing method discriminating functions: It is
5363 now possible to define methods specialized on classes which have
5364 forward-referenced superclasses. (thanks to Gerd Moellmann)
5365 * fixed evaluation order in optional entries (reported by Gilbert
5367 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5368 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5369 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5370 required-by-AMOP NAME argument, as well as CLASS and
5371 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5372 * fixed bug 20: DEFMETHOD can define methods using names that are
5373 not the proper names of classes to designate class specializers.
5374 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5375 Unix file descriptors, instead of blowing up. (thanks to Antonio
5377 * Garbage collection refactoring: user-visible change is that a
5378 call to the GC function during WITHOUT-GCING will not do garbage
5379 collection until the end of the WITHOUT-GCING. If you were doing
5380 this you were probably losing anyway.
5381 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5382 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5383 TYPEP the latter but not the former.
5384 * The compiler issues a full WARNING for calls to undefined functions
5385 with names from the CL package.
5386 * MAP-INTO for a vector destination is open coded. (reported by
5387 Brian Downing on c.l.l)
5388 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5389 documentation string.
5390 * fixed some bugs revealed by Paul Dietz' test suite:
5391 ** COPY-ALIST now signals an error if its argument is a dotted
5393 ** Condition slots are now accessed more correctly in the presence
5394 of multiple initargs for a given slot.
5395 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5396 exclude restarts of the same name associated with a different
5398 ** DEFCLASS of forward-referenced classes with another
5399 forward-referenced class in the superclasses list no longer
5401 ** Condition slots are now initialized once each, not multiple
5402 times. (thanks to Gerd Moellmann)
5403 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5405 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5406 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5407 arguments contain duplicated elements.
5408 ** RESTART-CASE understands local macros.
5409 ** RESTART-CASE associates exactly its own restarts with a condition.
5410 ** ENDP in safe mode checks its argument to be of type LIST.
5411 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5412 in question is unbound.
5413 ** Optimized MAKE-INSTANCE functions no longer cause internal
5414 assertion failures in the presence of duplicate initargs.
5415 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5416 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5417 propagated even in the ctor optimized implementation of
5419 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5421 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5422 * a better implementation of SXHASH on (simple) bit vectors,
5423 measured both in execution speed and in distribution of results
5424 over the positive fixnums, has been installed. Likewise, a better
5425 implementation of EQUAL for simple bit vectors is now available.
5426 * fixed CEILING optimization for a divisor of form 2^k.
5427 * fixed bug 240 (emitting extra style warnings "using the lexical
5428 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5429 by Antonio Martinez)
5430 * fixed SXHASH, giving different results for NIL depending on type
5431 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
5432 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
5433 variable. (found by Rolf Wester)
5434 * SBCL does not ignore type declarations for special
5435 variables. (reported by rif on c.l.l 2003-03-05)
5436 * some bug fixes in contrib/sb-aclrepl/
5437 * fixed some bugs revealed by Paul Dietz' test suite:
5438 ** a bug in the CONS type specifier, whereby the CAR and CDR
5439 types got intertwined, has been fixed;
5440 ** the type system is now able to reason about the interaction
5441 between INTEGER and RATIO types more completely;
5442 ** APPEND, [N]REVERSE and NRECONC check that those their
5443 arguments, which must be proper lists, are really so;
5444 ** An array specialized to be unable to hold elements has been
5445 implemented, as required -- yes, really -- by ANSI;
5446 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5447 on malformed property lists;
5449 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5450 * incompatible packaging change: in line with Unix convention,
5451 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5452 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5453 * REQUIRE and PROVIDE are now optionally capable of doing something
5454 useful. See the documentation string for REQUIRE.
5455 * infrastructure for a managed SBCL contrib system: contributed
5456 modules in this release include:
5457 ** the ASDF system definition facility;
5458 ** an interface to the BSD Sockets API;
5459 ** an ACL-like convenience interface to the repl;
5460 (thanks to Kevin Rosenberg)
5461 ** an implementation of ROTATE-BYTE, with efficient implementation
5463 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5464 gives a closer approximation to the right answer than previously.
5465 (thanks to Raymond Toy)
5466 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5467 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5468 optional environment arguments, as required by ANSI.
5469 * fixed bugs in other functions taking environment objects, allowing
5470 calls with an explicit NIL environment argument to be compiled
5472 * fixed bug 228: primary return values from
5473 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5474 COMPILE or FUNCTION.
5475 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5476 :TYPE will no longer signal errors on innocuous objects.
5477 * fixed bug 231b: SETQ is better at respecting type declarations in
5478 the lexical environment.
5479 * fixed a bug in DEFCLASS: classes named by symbols with no or
5480 unprintable packages can now be defined.
5481 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5482 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5483 * fixed compiler failure related to checking types of functions.
5484 (reported by Robert E. Brown)
5485 * the compiler is now much more consistent in its error-checking
5486 treatment of bounding index arguments to sequence functions: in
5487 (SAFETY 3) code, errors will be signalled in almost all cases if
5488 invalid sequence bounding indices are passed to functions defined
5489 by ANSI to operate on sequences.
5490 * fixed a bug in the build procedure: documentation of SBCL-specific
5491 packages is now preserved and available in the final Lisp image.
5492 * lifted FDEFINITION lookup out of loops in the implementation of
5493 many list operations. (thanks to Robert E. Brown)
5494 * fixed a bug in the reader: the #n# reader macro now works for
5495 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5496 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5497 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5498 E. Brown and Tony Martinez respectively)
5499 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5500 SLOT-BOUNDP: in particular, it is now able to optimize them much
5501 better, and is now not vulnerable to having packages renamed.
5502 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5503 always called when a slot is not present in an instance. (thanks
5505 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5506 longer signal an error on unreading a character following EOF on
5507 the previous constituent stream. (thanks to Tony Martinez)
5508 * fixed some bugs revealed by Paul Dietz' test suite:
5509 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5510 not just nonnegative fixnums;
5511 ** the logical bit-array operators such as BIT-AND now accept an
5512 explicit NIL for their "opt-arg" argument (to indicate a
5513 freshly-consed result bit-array);
5514 ** ELT now signals an error on an invalid sequence index in safe
5516 ** the type system is now cleverer about negations of numeric
5517 types, and consequently understands the BIGNUM and RATIO types
5519 ** the type system is now cleverer about the interaction between
5520 INTEGER and RATIO types: while bugs still remain, many more
5521 cases are accurately computed;
5522 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5523 if it is in the last clause;
5524 ** CONSTANTLY now correctly returns a side-effect-free function in
5526 ** DECLARE is no longer treated as a special-operator; in
5527 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5528 * incremented fasl file version number due to the change in the
5529 DEFSTRUCT-SLOT-DESCRIPTION structure.
5531 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5532 * minor incompatible change: code processed by the "interpreter" or
5533 EVAL now has a compilation optimization policy of (DEBUG 2)
5534 (changed from (DEBUG 1)) to improve debuggability of interactive
5535 development, and to allow the use of the debug RETURN command in
5537 * an experimental implementation of the RETURN command for the
5538 debugger has been included. (thanks to Frederik Kuivinen)
5539 * fixed bug 62: constraints were not propagated into a loop.
5540 * fixed bug in embedded calls of SORT (reported and investigated by
5542 * fixed some bugs revealed by Paul Dietz' test suite:
5543 ** printing and reading of arrays with some dimensions having
5544 length 0 (thanks to Gerd Moellmann);
5545 ** BOA constructor with &AUX argument without a default value does
5546 not cause a type error;
5547 ** CONSTANTP now returns true for all self-evaluating objects.
5549 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5550 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5551 accessors that are related by inheritance, as specified in the
5552 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5553 Valtteri Vuorikoski)
5554 * The compiler is now able to inline functions that were defined in
5555 a complex lexical environment (e.g. inside a MACROLET).
5556 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5558 * Support for the upcoming FreeBSD-5.0 release has been included.
5559 (thanks to Dag-Erling Smorgrav)
5560 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5561 effect when it is not in a toplevel context.
5562 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5563 stand a better chance of being correct. (thanks to Gerd
5565 * fixed bug in COERCE, which now signals an error on coercing a
5566 rational to a bounded real type which excludes the expected
5568 * The compiler is now able to derive types more accurately from the
5569 COERCE and COMPILE functions.
5570 * fixed bug 223: functional binding is considered to be constant
5571 only for symbols in the CL package.
5572 * fixed bug 231: SETQ did not check the type of a variable being set
5573 (reported by Robert E. Brown)
5574 * A new optimization for MAKE-INSTANCE has been included, fixing
5575 various bugs (including relating to :ALLOCATION :CLASS slots and
5576 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5578 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5579 ** As required by ANSI, LOOP now disallows anonymous collection
5580 clauses such as COLLECT I in conjunction with aggregate boolean
5581 clauses such as THEREIS (= I 1);
5582 ** LOOP now signals an error when any variable is reused in the
5583 same loop (including the potentially useful construct analogous
5584 to WITH A = 1 WITH A = (1+ A);
5585 ** IT is only a special loop symbol within the first clause of a
5586 conditional loop clause;
5587 ** LOOP with a typed iteration variable over a hashtable now
5588 signals a type error iff it should.
5589 * fixed some other bugs revealed by Paul Dietz' test suite:
5590 ** FILE-STREAM now names the class previously known as FD-STREAM;
5591 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5592 argument) no longer signals an error;
5593 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5594 of the slot symbol, rather than using the current package
5595 ((:CONC-NAME "") continues to intern the slot's name in the
5597 * incremented fasl file version number, because of the incompatible
5598 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5599 of the new implementation of DEFINE-COMPILER-MACRO.
5601 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5602 * Support for building SBCL for MIPS platforms running in
5603 little-endian mode has now been checked in, and basic
5604 functionality on said platforms verified.
5605 * minor incompatible change: PCL now records the pathname of a file
5606 in which methods and the like are defined, rather than its
5608 * minor incompatible change: TRUENAME now considers the truename of
5609 a file naming a directory to be the pathname with :DIRECTORY
5610 component indicating that directory.
5611 * minor incompatible change: a NAMED clause in the extended form of
5612 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5613 reason for the previous behaviour is unclear.
5614 * more systematization and improvement of CLOS and MOP conformance
5615 in PCL (thanks to Gerd Moellman and Pierre Mai):
5616 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5618 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5619 primary methods with no specializers;
5620 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5622 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5623 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5624 FORWARD-REFERENCED-CLASSes; error reporting on
5625 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5627 ** SXHASH on CLOS instances now uses a slot internal to the
5628 instance to return different numbers on distinct instances,
5629 while preserving the same return value through invocations of
5631 ** DEFMETHOD signals errors when methods with longer incongruent
5632 lambda lists are added to generic functions;
5633 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5634 CLASS, as specified in AMOP;
5635 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5636 on the order returned by the primary method for classes of
5637 class STANDARD-CLASS;
5638 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5639 * fixed some bugs shown by Paul Dietz' test suite:
5640 ** DOLIST puts its body in TAGBODY;
5641 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5643 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5644 value producing form;
5645 ** if more variables are given to PROGV than values, extra
5646 variables are bound and made to have no value;
5647 ** NSUBSTITUTE on list arguments gets the right answer with
5649 ** ELT signals an error of type TYPE-ERROR when the index argument
5650 is not a valid sequence index;
5651 ** LOOP signals (at macroexpansion time) an error of type
5652 PROGRAM-ERROR when duplicate variable names are found;
5653 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5654 ** FUNCALL of special-operators now cause an error of type
5656 ** PSETQ now works as required in the presence of side-effecting
5657 symbol-macro places;
5658 ** NCONC accepts any object as its last argument;
5659 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5661 ** loop-for-as-package does not require a package to be explicitely
5663 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5665 * fixed bug 166: compiler preserves "there is a way to go"
5666 invariant when deleting code.
5667 * fixed bug 172: macro lambda lists with required arguments after
5668 &REST arguments now cause an error to be signalled. (thanks to
5670 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5671 bug. (thanks to Matthew Danish)
5672 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5674 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5675 arguments are lexically rebound. (thanks to Gerd Moellmann and
5677 * fixed bug 194: error messages are now more informative when there
5678 is no primary method applicable in a call to a generic
5679 function. (thanks to Gerd Moellmann)
5680 * fixed bug in command line argument checking (thanks to Julian
5682 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5683 (thanks to Matthew Danish)
5684 * incremented fasl file version number, because of the
5685 SXHASH-related changes in the layout of CLOS data structures
5687 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5688 * minor incompatible change: The runtime (the Unix executable named
5689 "sbcl") is now much pickier about the .core files it will load.
5690 Essentially it now requires .core files to descend from the same
5691 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5692 as the runtime does. (The intent is to prevent the crashes which
5693 can occur, and which can even be reported as mysterious failures,
5694 when people patch the sources or change the build parameters
5695 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5696 sbcl and .core files.)
5697 * fixed bug: VALUES-LIST is no longer optimized away.
5698 * fixed bug 142: The FFI conversion of C string values to Lisp
5699 string values no longer conses excessively. (thanks to Nathan
5700 Froyd porting Raymond Toy's fix to CMU CL)
5701 * began to systematize and improve MOP conformance in PCL (thanks to
5702 Nathan Froyd, Gerd Moellman and Pierre Mai):
5703 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5705 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5706 ** FINALIZE-INHERITANCE is now called on class finalization;
5707 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5708 argument precedence order.
5709 * fixed bug 202: The compiler no longer fails on functions whose
5710 derived types contradict their declared type.
5711 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5712 so it can be non-toplevel.
5713 * The fasl file version number has changed (because of the new
5714 implementation of DEFMACRO).
5715 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5716 safe code, that any length requirement by their type-specifier
5717 argument is valid. The exceptions to this are described in bug
5719 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5720 functions now check the types of their inputs as required by ANSI.
5721 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5722 introduced symbol is DECLAREd to be SPECIAL.
5723 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5724 * fixed bug: :COUNT argument to sequence functions may be negative
5725 * fixed bug: body of DO-SYMBOLS may contain declarations
5726 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5727 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5728 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5729 symbol macro only once
5730 * fixed printing of call frame when argument list is unavailable
5731 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5732 * compiler no longer signals WARNING on unknown keyword
5735 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5736 * A beta-quality port to the mips architecture running Linux,
5737 based on the old CMUCL backend, has been made. It has been tested
5738 on a big-endian kernel, and works sufficiently well to be able to
5739 rebuild itself; it has not been tested in little-endian mode.
5740 * fixed an inconsistency between gencgc.c and purify.c which made
5741 dumping/loading .core files unreliable
5742 * fixed bug 120a: The compiler now deals correctly with IFs where
5743 the consequent is the same as the alternative, instead of
5744 misderiving the return type. (thanks to Alexey Dejneka)
5745 * fixed bug 113: Logical pathnames are now dumpable (the logical
5746 host is resolved at load-time, throwing an error if it is not
5748 * fixed bug 174: FORMAT's error message is slightly clearer when a
5749 non-printing character is used in a format directive.
5750 * fixed several bugs in compiler checking of type declarations, i.e.
5751 violations of the Python "declarations are assertions" principle
5752 (thanks to Alexey Dejneka)
5753 * fixed several bugs in PCL's error checking (thanks to Gerd
5755 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5757 * fixed bug in compilation of functions as first class values
5758 (thanks to Antonio Martinez-Shotton)
5759 * The compiler's handling TYPE-ERRORs which it can prove will
5760 inevitably happen at runtime has been cleaned up and corrected
5761 in several ways. (thanks to Alexey Dejneka)
5762 * improved argument type checking for various basic arithmetic
5763 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5764 lavished on them in the past that they can be compiled in many
5765 ways in different special cases
5766 * fixed bug 181: compiler checks validity of user supplied type
5768 * cleaned up code flushing in optimization: Function calls which
5769 should signal errors for safety purposes (e.g. which ANSI says
5770 should signal errors when their arguments are of incorrect type)
5771 are no longer optimized away.
5772 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5773 * incremented fasl file version number, because changes in the
5774 implementation of sequence functions like COERCE caused
5775 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5776 in old inline expansions) to become undefined. (Actually these
5777 changes were later undone, so we might very well be binary
5778 compatible with 0.7.7 after all, but leaving the version number
5779 incremented seemed like the simplest and most conservative
5782 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5783 * An alpha-quality port to the parisc architecture running Linux,
5784 based on the old CMUCL backend, has been made. This, even more so
5785 than the other backends, should be considered still a work in
5786 progress; known problems include that the Linux kernel in 64-bit
5787 mode does not propagate the correct sigcontext structure to
5788 userspace, and consequently SBCL on a parisc64 kernel will not
5790 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5791 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5792 suppressed.) Also now that the compiler is looking at declarations
5793 in the environment, it checks optimization declarations as well,
5794 and suppresses inlining when (> DEBUG SPEED).
5795 * More fixes have been made to treatment of floating point exception
5796 treatment and other Unix signals. In particular, floating point
5797 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5798 * The detection and handling of control stack exhaustion (infinite
5799 or very deeply nested recursion) has changed. Stack exhaustion
5800 detection is now done by write-protecting pages at the OS level
5801 and applies at all optimization settings; when found, a
5802 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5803 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5804 be caught using IGNORE-ERRORS.
5805 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5806 correctly when transforming recursive LABELS functions to LETs.
5807 (thanks to Alexey Dejneka)
5808 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5809 that are names of constants or global variables.
5810 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5811 alien routines with docstrings.
5812 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5813 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5815 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5816 (thanks to Eric Marsden)
5817 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5818 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5819 * Bug fix: The SPARC backend can now compile functions involving
5820 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5821 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5822 to a functions expecting a PATHNAME-DESIGNATOR.
5823 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5824 lambda lists. (thanks to Alexey Dejneka)
5825 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5826 functions so that EXPORTing the name of the class doesn't cause
5827 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5828 to Antonio Martinez for reporting this)
5829 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5830 constant-folded without failing an assertion. (thanks to Einar
5831 Floystad Dorum for reporting this)
5832 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5833 types are now dealt with more correctly by the compiler.
5834 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5835 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5836 behaviour analogous to RENAME-FILE. This puts its behaviour more
5837 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5839 * The fasl file version number has changed again. (because of the
5840 bug fix involving the names of PCL MAKE-INSTANCE functions)
5842 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5843 * bug fix: Floating point exceptions are treated much more
5844 consistently on the x86/Linux and PPC/Linux platforms.
5845 * Array initialization with :INITIAL-ELEMENT is now much faster for
5846 cases when the compiler cannot open code the array creation, but
5847 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5848 array accesses have also seen a speed increase.
5849 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5850 specified. (This was at the root of some bad interactions between
5851 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5853 * bug fix: Internal error arguments for undefined functions are now
5854 computed correctly on the PPC/Linux platform.
5855 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5856 Raymond Toy's patch for CMU CL)
5857 * Support for the Solaris 9 operating environment has been included
5858 (thanks to Daniel Merritt)
5859 * A very ugly but hopefully complete draft of the missing FFI chapter
5860 of the manual has been created by reformatting the corresponding
5861 CMU CL manual chapter into (currently very ugly and incoherent)
5862 DocBook and bringing it up to date for SBCL behavior. Thus, the
5863 manual is now essentially complete, at least by my extreme
5864 once-and-only-once standards, whereby it's acceptable to refer to
5865 the doc strings of SB-EXT functions as the primary documentation.
5866 * The fasl file version number has changed again, due to cleanup of
5867 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5868 is no longer a static symbol.)
5870 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5871 * SBCL now builds with OpenMCL (version 0.12) as the
5872 cross-compilation host; also, more progress has been made toward
5873 bootstrapping under CLISP.
5874 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5876 * bug 158 fixed: The compiler can now deal with integer loop
5877 increments different from 1; fixing this turned out also to fix
5879 * bug 169 fixed: no more bogus warnings about using lexical bindings
5880 despite the presence of perfectly good SPECIAL declarations (thanks
5881 to David Lichteblau)
5882 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5883 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5884 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5886 * bug 180 fixed: Method combination specifications no longer ignore
5887 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5888 * bug fix: Structure type predicate functions now check their argument
5889 count as they should.
5890 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5891 correctly. (thanks to Pierre Mai)
5892 * minor incompatible change: The --noprogrammer option is deprecated
5893 in favor of the new --disable-debugger option, which is very similar.
5894 (The major difference is that it takes effect at a slightly different
5895 time at startup, causing handling of errors in --sysinit and
5896 --userinit files will be affected differently.) The
5897 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5898 been added to allow this functionality to be controlled from ordinary
5899 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5900 maintainers, who might want to run non-interactive scripts to
5901 build SBCL cores which will later be used interactively.)
5902 * minor incompatible change: The LOAD function no longer, when given
5903 a wild pathname to load, loads all files matching that pathname.
5904 Instead, an error of type FILE-ERROR is signalled.
5906 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5907 * bug 147 fixed: The compiler preserves its block link/count
5908 invariants more correctly now so that it doesn't crash. (thanks
5910 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5912 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5913 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5914 no-value-for-this-character as NIL (as specified by ANSI).
5915 * HOST-NAMESTRING on physical pathnames now returns a string that is
5916 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5917 (thanks to Christophe Rhodes)
5918 * The Alpha port handles icache flushing more correctly. (thanks to
5920 * More progress has been made toward bootstrapping under CLISP. (thanks
5921 to Christophe Rhodes)
5922 * The fasl file format has changed again, because dynamic loading
5923 on OpenBSD (which has non-ELF object files) motivated some cleanups
5924 in the way that foreign symbols are transformed and passed around.
5925 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5926 is no longer treated as whitespace by the reader, but instead as
5927 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5928 |A
\7fB|, instead of A as it used to.
5930 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5931 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5932 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5933 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5934 this as of 0.7.1.45, but was left out of the previous news section
5935 (thanks to Dan Barlow)
5936 * SBCL now runs on the Solaris operating system on SPARC architectures
5937 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5938 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5939 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5940 * SPARC backend cleanups, allowing builds of cores optimized for V8
5941 and V9 SPARCS, and also emission of code targeted to a particular
5942 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5944 * SBCL is closer to bootstrapping under CLISP, thanks to various
5945 fixes by Christophe Rhodes.
5946 * The fasl file format has changed again, to allow the compiler's
5947 INFO database to support symbol macros.
5948 * The user manual (in doc/) is formatted into HTML more nicely.
5949 (thanks to coreythomas)
5950 * The system is smarter about SUBTYPEP relationships, especially
5951 those involving NOT types (including types such as ATOM which are
5952 represented internally using NOT types). Thus SUBTYPEP is less
5953 likely to return (VALUES NIL NIL) in general, and in particular
5954 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5956 * The fasl file format has changed again, because the internal
5957 representation of types now includes a new slot to support the new
5958 SUBTYPEP-of-NOT-types logic.
5959 * (not a change in the main branch of SBCL, but a related prototype
5960 which can hopefully be merged into the main branch of SBCL in the
5961 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5962 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5963 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5964 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5965 dispatch macro character combinations. (thanks to Alexey Dejneka)
5966 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5967 that superficially look like logical namestrings correctly.
5968 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5970 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5971 default supplied-p) for &optional and &key arguments. (thanks to
5974 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5975 * incompatible change: The compiler is now less aggressive about
5976 tail call optimization, doing it only when (> SPACE DEBUG) or
5977 (> SPEED DEBUG). (This is an incompatible change because there are
5978 programs which relied on the old CMU-CL-style behavior to optimize
5979 away their unbounded recursion which will now die of stack overflow.)
5980 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5981 for non-GENCGC systems has been increased to 20M (since that
5982 seems much closer to the likely performance optimum for modern
5983 systems than the old 4M value was)
5984 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5985 and *DEBUG-PRINT-LEVEL*
5986 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5987 of CMU CL's support for SPARC, and various endianness and other
5988 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5989 * new syntactic sugar for the Unix command line: --load foo.bar is now
5990 an alternate notation for --eval '(load "foo.bar")'.
5992 ** The system now detects stack overflow and handles it gracefully,
5993 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5994 optimization settings. (This is a good thing in general, and
5995 its introduction in this version should be particularly timely
5996 for anyone whose code fails because of suppression of tail
5998 ** The system now hunts for the C variable "environ" in a more
5999 devious way, to avoid segfaults when the C library version differs
6000 between compile time and run time. (thanks to Christophe Rhodes)
6001 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
6002 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
6003 ** The compiler no longer issues bogus style warnings for undefined
6004 classes in the same source file as the DEFCLASSes which defined
6005 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
6007 ** fixes in CONDITION class precedence list for undefined function
6008 errors (thanks to Alexei Dejneka)
6009 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
6010 correctly. (thanks to Dan Barlow)
6011 ** portability fixes aiming at bootstrapping under CLISP (thanks
6012 to Dave McDonald and Christophe Rhodes)
6013 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
6014 ** fixes in type translation and and type inference (thanks to
6016 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
6017 ** various fixes in the new ports (thanks to Dan Barlow)
6018 * several changes related to debugging:
6019 ** suppression of tail recursion, as noted above
6020 ** stack overflow detection, as noted above
6021 ** The default implementation of TRACE has changed. :ENCAPSULATE T
6022 is now the default. (For some time encapsulation has been more
6023 reliable than the breakpoint-based :ENCAPSULATE NIL
6024 implementation, at least on X86 systems; and I just noticed that
6025 encapsulation also seems closer to the spirit of the ANSI
6028 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
6030 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
6031 up properly again. (There was a packaging bug in 0.7.0 which
6032 left their definitions in SB-SYS::LOAD-FOREIGN and
6033 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
6034 vital for most things which interface to C-level interfaces,
6035 like extensions working with sockets or databases or
6036 Perl-compatible regexes or whatever, and the need to fix
6037 this bug is the main reason that 0.7.1 was released so
6039 ** DEFGENERIC is now choosier about the methods it redefines, so that
6040 reLOADing a previously-LOADed file containing DEFGENERICs does
6041 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
6042 cycle now works as it should. (thanks to Alexey Dejneka)
6043 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
6044 fixed by Christophe Rhodes. (He actually submitted this patch
6045 months ago, and I delayed until after 0.7.0.)
6046 ** Bug 111 (internal compiler confusion about runtime checks on
6047 FUNCTION types) was fixed by Alexey Dejneka.
6048 * Some internal cleanups (getting rid of variables which aren't
6049 needed now that the byte interpreter is gone) caused the fasl
6050 file format number to change again.
6052 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
6053 * major incompatible change: The default fasl file extension, i.e. the
6054 default extension for files produced by COMPILE-FILE, has changed
6055 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
6057 ** There are many changes in the implementation of the compiler.
6058 SBCL is now essentially a compiler-only implementation of ANSI
6059 Common Lisp. EVAL still "interprets" a few special cases, but
6060 almost all the interesting cases are handled by creating
6061 a LAMBDA expression, calling COMPILE on it, then calling
6062 FUNCALL on the result.
6063 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
6064 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
6065 Since the code is newer, there might still be some new bugs
6066 (though not as many as before Martin Atzmueller's fixes:-). But
6067 the new code is substantially simpler and clearer, and hopefully
6068 any remaining bugs will be simpler, less fundamental, and more
6069 fixable then the bugs in the old code.
6070 ** The revised compiler is still a little unsteady on its feet.
6072 *** The debugging information it produces (particularly the names
6073 of FUNCTION objects) is sometimes much less useful than what
6074 the old compiler produced.
6075 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
6076 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
6077 within a MACROLET) has been temporarily weakened.
6078 ** There are new compiler optimizations for various functions:
6079 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
6080 FIND-IF-NOT, POSITION-IF-NOT, and FILL
6081 *** the math functions TRUNCATE, FLOOR, and CEILING
6082 *** the function-of-all-trades COERCE
6083 Mostly these should be transparent, but there's one
6084 potentially-annoying problem (bug 117): when the compiler
6085 inline-expands a function and does type analysis on the result,
6086 it can create control paths which have type mismatches, and
6087 when it can't prove that those control paths aren't taken,
6088 it will issue WARNINGs about the type mismatches. This is
6089 a particular problem in practice for the new sequence functions.
6090 It's not clear how this should be fixed, and for now, a
6091 workaround is given in the entry for 117 in the BUGS file.
6092 ** (Because of the interaction between the two previous items --
6093 occasional inlining problems and new inline expansions -- some
6094 of the new sequence function optimizations won't really kick in
6095 completely until debugging information, and then inlining, are
6096 straightened out in some future version.)
6097 * minor incompatible changes:
6098 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
6099 DIRECTORY no longer implicitly promotes NIL slots of its
6100 pathname argument to :WILD. In particular, when you ask for the
6101 contents of a directory (which you used to be able to do without
6102 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
6103 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
6104 ** changes in behavior that ANSI explicitly defines to be
6105 implementation dependent:
6106 *** The new compiler-only implementation still conforms with ANSI,
6107 but acts a little different than before. Besides the obvious
6108 changes in performance tradeoffs (that the cost per form passed
6109 to EVAL has gone up, and the cost per form executed by EVAL
6110 has gone down), the behavior of the system changes a little
6111 because there are no longer any interpreted function objects.
6112 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
6113 e.g. doing COMPILE on the output of interactive DEFUN is
6115 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
6117 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
6118 has changed from (:CL) to NIL.
6119 *** The CHAR-NAME of unprintable ASCII characters which, unlike
6120 e.g. #\Newline and #\Tab, don't have names specified in the
6121 ANSI Common Lisp standard, is now based on their ASCII symbolic
6122 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
6123 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
6124 are no longer used for output.
6125 ** changes in internal implementation constants:
6126 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
6127 4 million. (If your application spends a lot of time GCing and
6128 you have a lot of RAM, you might want to experiment with
6129 increasing it even more.)
6130 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
6131 However, almost all old code should still continue to work without
6132 immediate update, as SB-C-CALL is now a (deprecated) nickname
6134 ** Old operator names in the style DEF-FOO are now deprecated in
6135 favor of new corresponding names DEFINE-FOO, for consistency with
6136 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
6137 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
6138 internal symbols, but a few supported extensions like
6139 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
6140 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
6141 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
6142 etc. as you get deeper into recursive calls to the debugger
6143 command loop, instead of the old "5]", "5]]", "5]]]"
6144 sequence. (I was motivated to do this when squabbles between
6145 ILISP and SBCL left me very deeply nested in the debugger. In the
6146 short term, this change will probably provoke more ILISP/SBCL
6147 squabbles, but hopefully it will be an improvement in the long run.)
6148 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
6149 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
6150 function, since declaiming return types involving aliens is
6151 (1) annoyingly messy to do by hand and (2) vital to efficient
6152 compilation of code which calls such functions.
6153 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
6154 longer reexported by the SB-EXT package. They're solely useful
6155 for alien code, so it seems more logical that you should get
6156 them from the SB-ALIEN package, not in SB-EXT.
6157 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
6158 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
6159 features. Instead, the code that they used to control is always
6160 built into the system.
6161 * many other bug fixes
6162 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
6163 advantage of the new EVAL-WHEN stuff and to clean them up in
6164 general, and they are now more ANSI-compliant in a number of
6165 ways. Martin Atzmueller is responsible for a lot of this.
6166 ** Besides the cleanups discussed above, Martin Atzmueller fixed
6168 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
6169 *** correct ERROR type for various file operations
6170 *** some fixes for Lisp streams
6171 *** DEFMETHOD syntax checking
6172 *** changing old weird representation of debug information as
6173 strings (which, among their other deficiencies, don't transform
6174 correctly when you rename packages, and don't change their
6175 print representation when you change things like *PACKAGE*
6176 and *PRINT-LENGTH*) to symbols and lists of symbols
6177 He also made several improvements and fixed several bugs in DESCRIBE.
6178 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6180 *** misbehavior of WRITE-STRING/WRITE-LINE
6181 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6182 and several other LOOP problems as well
6183 *** DIRECTORY when similar filenames are present
6184 *** DEFGENERIC with :METHOD options
6185 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6186 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6187 *** argument ordering in FIND with :TEST option
6188 *** mishandled package designator argument in APROPOS-LIST
6189 *** various problems in the backquote readmacro
6190 *** a bug in APROPOS
6191 *** probably some others that I'm not describing very well here,
6192 since the CVS log documents them by reference to sbcl-devel
6193 messages, and the SourceForge archives aren't working well.:-(
6194 ** Dan Barlow improved the Alpha port (and is making progress on the
6195 PPC port, for those of you who think different).
6196 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6197 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6198 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6199 continues to work on the SPARC port (for those of you in a position
6200 to look down upon our little PC-compatible boxes from a great height).
6201 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6202 and uses that copy, rather than the current dynamic value, when
6203 it's trying to decide whether to truncate output. Thus e.g.
6204 (let ((*print-lines* 50))
6205 (pprint-logical-block (stream nil)
6207 (let ((*print-lines* 8))
6208 (print (aref possiblybigthings i) stream)))))
6209 should now truncate the logical block only at 50 lines, instead of
6210 often truncating it at 8 lines, as it did before.
6211 * The doc/cmucl/ directory, containing old CMU CL documentation
6212 from the time of the fork, is no longer part of the base system.
6213 SourceForge has shut down its anonymous FTP service, and with it
6214 my original plan for distributing the old CMU CL documentation
6215 there. For now, if you need these files you can download an old
6216 SBCL source release and extract them from it.
6217 * The fasl file version number changed again, for dozens of reasons,
6218 some of which are apparent above.
6220 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6221 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6222 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6223 patch, so that DISASSEMBLE output is much nicer.
6224 * The code in the SB-PROFILE package now seems reasonably stable.
6225 I still haven't decided what the final interface should look like
6226 (I'd like PROFILE to interact cleanly with TRACE, since both
6227 facilities use function encapsulation) but if you have a need
6228 for profiling now, you can probably use it successfully with
6229 the current CMU-CL-style interface.
6230 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6231 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6232 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6233 link now returns the dangling link itself, and for similar
6234 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6235 link itself. (In these cases the old code signalled an error and
6236 looped endlessly, respectively.) Thus, DIRECTORY now works even
6237 in the presence of dangling and cyclic symbolic links.
6238 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6239 is now a supported extension again, since the consensus on
6240 sbcl-devel was that it can be useful for ordinary development
6241 work, not just for debugging SBCL itself.
6242 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6243 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6244 that currently-defined functions might be redefined later with
6245 different return types.
6246 * Hash tables can be printed readably, as inspired by CMU CL code
6247 of Eric Marsden and SBCL code of Martin Atzmueller.
6248 * better error handling in CLOS method combination, thanks to
6249 Martin Atzmueller porting Pierre Mai's CMU CL patches
6250 * more overflow fixes for >16Mbyte I/O buffers
6251 * A bug in READ has been fixed, so that now a single Ctrl-D
6252 character suffices to cause end-of-file on character streams.
6253 In particular, now you only need one Ctrl-D at the command
6254 line (not two) to exit SBCL.
6255 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6257 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6258 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6259 does the right thing.
6260 * The implementation of some type tests, especially for CONDITION
6261 types, is now tidier and maybe faster, due to CMU CL code
6262 originally by Douglas Crosher, ported by Martin Atzmueller.
6263 * Some math functions have been fixed, and there are new
6264 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6265 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6266 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6267 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6268 likely to be built into sbcl-0.7.0.)
6269 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6270 CL, ported to SBCL by Martin Atzmueller)
6271 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6272 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6273 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6274 * There's a new slam.sh hack to shorten the edit/compile/debug
6275 cycle for low-level changes to SBCL itself, and a new
6276 :SB-AFTER-XC-CORE target feature to control the generation of
6277 the after-xc.core file needed by slam.sh.
6278 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6279 COMPILE-FILE is no longer supported, so that now every function
6280 gets an entry point, so that block compilation looks a little
6281 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6282 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6283 returns the number of bytes consed since the system started,
6284 rather than the number consed since the first time the function
6285 was called. (The new definition parallels ANSI functions like
6286 CL:GET-INTERNAL-RUN-TIME.)
6287 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6288 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6289 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6290 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6291 * Fasl file version numbers are now independent of the target CPU,
6292 since historically most system changes which required version
6293 number changes have affected all CPUs equally. Similarly,
6294 the byte fasl file version is now equal to the ordinary
6297 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6298 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6299 is no longer recognized. I apologize for this, because it was
6300 listed in SB-EXT as a supported extension, but I found that
6301 its existing behavior was poorly specified, as well as incorrectly
6302 specified, and it looked like too much of a mess to straighten it
6303 out. I have enough on my hands trying to get ANSI stuff to work..
6304 * many patches ported from CMU CL by Martin Atzmueller, with
6305 half a dozen bug fixes in pretty-printing and the debugger, and
6306 half a dozen others elsewhere
6307 * fixed bug 13: Floating point infinities are now supported again.
6308 They might still be a little bit flaky, but thanks to bug reports
6309 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6310 as flaky as they were.
6311 * The --noprogrammer command line option is now supported. (Its
6312 behavior is slightly different in detail from what the old man
6313 page claimed it would do, but it's still appropriate under the
6314 same circumstances that the man page talks about.)
6315 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6316 are now supported, and enabled by default. Thus, the compiler can
6317 handle many floating point and complex operations much less
6318 inefficiently. (Thus e.g. you can implement a complex FFT
6320 * The compiler now detects type mismatches between DECLAIM FTYPE
6321 and DEFUN better, and implements CHECK-TYPE more correctly, and
6322 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6323 thanks to patches from Martin Atzmueller.
6324 * various fixes to make the cross-compiler more portable to
6325 ANSI-conforming-but-different cross-compilation hosts (notably
6326 Lispworks for Windows, following bug reports from Arthur Lemmens)
6327 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6328 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6329 fixed thanks to Pierre Mai's CMU CL patches.
6330 * fixes to keep the system from overflowing internal counters when
6331 it tries to use i/o buffers larger than 16M bytes
6332 * fixed bug 45a: Various internal functions required to support
6333 complex special functions have been merged from CMU CL sources.
6334 (When I was first setting up SBCL, I misunderstood a compile-time
6335 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6336 * improved support for type intersection and union, fixing bug 12
6337 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6338 more obscure bugs as well
6339 * some steps toward byte-compiling non-performance-critical
6340 parts of the system, courtesy of patches from Martin Atzmueller
6341 * Christophe Rhodes has made some debian packages of sbcl at
6342 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6343 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6344 stable, but are nonetheless usable. When he's ready, I'd be happy
6345 to add them to the SourceForge "File Releases" section. (And if
6346 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6347 * new fasl file format version number (because of changes in
6348 internal representation of (OR ..) types to accommodate the new
6349 support for (AND ..) types, among other things)
6351 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6352 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6354 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6356 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6357 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6358 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6359 * DESCRIBE now works on structure objects again.
6360 * Most function call argument type mismatches are now handled as
6361 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6362 know whether the function will be redefined before the call is
6363 executed. (The compiler could flag local calls with full WARNINGs,
6364 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6365 it doesn't keep track of enough information to know whether calls
6366 are local in this sense.)
6367 * Compiler output is now more verbose, with messages truncated
6368 later than before. (There should be some supported way for users
6369 to override the default verbosity, but I haven't decided how to
6370 provide it yet, so this behavior is still controlled by the internal
6371 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6372 src/compiler/ir1util.lisp.)
6373 * Fasl file format version numbers have increased again, because
6374 support for the Gray streams extension changes the layout of the
6375 system's STREAM objects.
6376 * The Gray subclassable streams extension now works, thanks to a
6377 patch from Martin Atzmueller.
6378 * The full LOAD-FOREIGN extension (not just the primitive
6379 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6380 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6381 but like most other programs, it defaults to copying the Unix
6382 environment from the original process instead of starting the
6383 new process in an empty environment.
6384 * Extensions which manipulate the Unix environment now support
6385 an :ENVIRONMENT keyword option which doesn't smash case or
6386 do other bad things. The CMU-CL-style :ENV option is retained
6387 for porting convenience.
6388 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6389 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6391 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6393 * A patch from Martin Atzmueller seems to have solved the SIGINT
6394 problem, and as far as we know, signal-handling now works cleanly.
6395 (If you find any new bugs, please report them!)
6396 * The system no longer defaults Lisp source file names to types
6397 ".l", ".cl", or ".lsp", but only to ".lisp".
6398 * The compiler no longer uses special default file extensions for
6399 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6400 seems to expect a single default extension for all compiled code,
6401 and there's no compelling reason to try to stretch the standard
6402 to allow two different extensions.) Instead, byte-compiled files
6403 default to the same extension as native-compiled files.
6404 * Fasl file format version numbers have increased again, because
6405 a rearrangement of internal implementation packages made some
6406 dumped symbols in old fasl files unreadable in new cores.
6407 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6408 many fewer weird special cases.
6409 * Bug #17 (differing COMPILE-FILE behavior between logical and
6410 physical pathnames) has been fixed, and some related misbehavior too,
6411 thanks to a patch from Martin Atzmueller.
6412 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6413 by Tim Moore, ported to SBCL by Martin Atzmueller.
6414 * Martin Atzmueller fixed several filesystem-related problems,
6415 including bug #36, in part by porting CMU CL patches, which were
6416 written in part by Paul Werkowski.
6417 * More compiler warnings in src/runtime/ are gone, thanks to
6418 more patches from Martin Atzmueller.
6419 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6422 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6424 * DESCRIBE now works on CONDITION objects.
6425 * The debugger now handles errors which arise when trying to print
6426 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6428 * The build system now uses an additional file, customize-target-features.lisp,
6429 to allow local modifications to the target *FEATURES* list. (The point of
6430 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6431 debugging features enabled, without having to worry about propagating it
6432 into everyone's system when I do a "cvs update".) When no
6433 customize-target-features.lisp file exists, the target *FEATURES* list
6434 should be constructed the same way as before.
6435 * fixed bugs in DEFCONSTANT ANSI-compatibility:
6436 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
6437 warn about behavior which is undefined under the ANSI spec. Note: This
6438 is specified by ANSI, but it's not very popular with programmers.
6439 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
6440 macro in the SBCL sources for an example of a workaround which you
6441 might use to make portable ANSI-standard code which does what you want.
6442 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
6443 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
6444 when it's used as a non-toplevel form. (This is required in order
6445 to implement the DEFCONSTANT-EQX macro.)
6446 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6447 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6448 funny things, due to bugs in the implementation of EVAL-WHEN
6449 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6450 non-toplevel DEFCONSTANTs are uncommon.)
6451 * The core file version number and fasl file version number have been
6452 incremented, because the old noncompliant DEFCONSTANT behavior involved
6453 calling functions which no longer exist, and because I also took the
6454 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6455 * fixed bug 1 (error handling before read-eval-print loop starts), and
6456 redid debugger restarts and related debugger commands somewhat while
6458 ** The QUIT debugger command is gone, since it did something
6459 rather different than the SB-EXT:QUIT command, and since it never
6460 worked properly outside the main toplevel read/eval/print loop.
6461 Invoking the new TOPLEVEL restart provides the same functionality.
6462 ** The GO debugger command is also gone, since you can just invoke
6463 the CONTINUE restart directly instead.
6464 ** The TOP debugger command is also gone, since it's redundant with the
6465 FRAME 0 command, and since it interfered with abbreviations for the
6467 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6469 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6470 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6471 some porting work by Martin Atzmueller)
6472 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6473 with a boatload of patches which he ported to SBCL. Now that those
6475 ** The system tries to make sure that its low-priority messages
6476 are prefixed by semicolons, to help people who like to use
6477 syntax highlighting in their ILISP buffer. (This patch
6478 was originally due to Raymond Toy.)
6479 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6480 patches originally written by Raymond Toy.
6481 ** The compiler understands coercion between single-value and
6482 multiple-VALUES type expressions better, getting rid of some very
6483 weird behavior, thanks to patches originally by Robert MacLachlan
6484 and Douglas Crosher.
6485 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6486 lambda lists, thanks to a patch originally by Pierre Mai.
6487 ** The system no longer bogusly warns about "abbreviated type
6489 ** The compiler gets less confused by inlining and RETURN-FROM,
6490 thanks to some patches originally by Tim Moore.
6491 ** The system no longer hangs when dumping circular lists to fasl
6492 files, thanks to a patch originally from Douglas Crosher.
6493 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6494 undefined function error.
6495 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6496 in structure slot initforms) for now, documented workaround instead:-|
6497 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6498 * fixed bug 5: added stubs for various Gray stream functions called
6499 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6500 installed, at least appropriate type errors are generated
6501 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6502 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6503 consistently in DEFMETHOD forms.
6504 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6505 it doesn't seem to affect SBCL after all
6506 * The C runtime system now builds with better optimization and many
6507 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6509 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6511 * The system is now under CVS at SourceForge (instead of the
6512 CVS repository on my home machine).
6513 * The new signal handling code has been tweaked to treat register
6514 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6515 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6516 downstream, e.g. in debug-int.lisp, has implicit dependencies
6517 on the unsignedness of integer representation of machine words,
6518 and that caused the system to bomb out with infinite regress
6519 when trying to recover from type errors involving signed values,
6520 e.g. (BUTLAST '(1 2 3) -1).)
6521 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6522 (This was one of the bugs Peter Van Eynde reported back in July.)
6523 * The system now uses code inspired by Colin Walters' O(N)
6524 implementation of MAP (from the cmucl-imp@cons.org mailing
6525 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6526 inline the MAP operation, and there is more than one
6527 sequence argument to the MAP call (so that it can't just
6528 do ETYPECASE once and for all based on the type of the
6529 single sequence argument). (The old non-inline implementation
6530 of the general M-argument sequence-of-length-N case required
6531 O(M*N*N) time when any of the sequence arguments were LISTs.)
6532 * The QUIT :UNIX-CODE keyword argument has been renamed to
6533 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6534 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6536 * Raymond Wiker's patches to port dynamic loading from Linux to
6537 FreeBSD have been added.
6538 * The BUGS file is now more nearly up to date, thanks in large part
6539 to Martin Atzmueller's review of it.
6540 * The debugger now flushes standard output streams before it begins
6541 its output ("debugger invoked" and so forth).
6542 * The core version number and fasl file version number have both
6543 been incremented, because of incompatible changes in the layout
6545 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6546 used to not be called for a saved Lisp image.)
6547 * Martin Atzmueller's version of a patch to fix a compiler crash,
6548 as posted on sbcl-devel 13 September 2000, has been installed.
6549 * Instead of installing Martin Atzmueller's patch for the
6550 compiler transform for SUBSEQ, I deleted the compiler transform,
6551 and transforms for some similar consing operations.
6552 * A bug in signal handling which kept TRACE from working on OpenBSD
6554 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6555 away by constant folding
6556 * The system now defines its address space constants in one place
6557 (in the Lisp sources), and propagates them automatically elsewhere
6558 (through GENESIS and the sbcl.h file). Therefore, patching the
6559 address map is less unnecessarily tedious and error-prone. The
6560 Lisp names of address space constants have also been systematized.
6561 * CVS tags like dollar-Header-dollar have been removed from
6562 the sources, because they have never saved me trouble and
6563 they've been source of trouble working with patches and other
6564 diff-related operations.
6565 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6566 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6568 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6570 * The system has been ported to OpenBSD.
6571 * The system now compiles with a simple "sh make.sh" on the systems
6572 that it's supported on. I.e., now you no longer need to tweak
6573 text in the target-features.lisp-expr and symlinks in src/runtime/
6574 by hand, the make.sh takes care of it for you.
6575 * The system is no longer so grossly inefficient when compiling code
6576 involving vectors implemented as general (not simple) vectors (VECTOR T),
6577 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6578 which dares to use the various sequence functions on non-simple
6579 vectors, takes less of a performance hit.
6580 * There is now a primitive type predicate VECTOR-T-P
6581 to test for the (VECTOR T) type, so that e.g.
6582 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6583 can now be compiled with some semblance of efficiency. (The old code
6584 turned the type declaration into a full call to %TYPEP at runtime!)
6585 * AREF on (VECTOR T) is still not fast, since it's still compiled
6586 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6587 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6588 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6589 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6590 without making full calls to SUBTYPEP at runtime.
6591 (Some analogous efficiency issues for non-simple vectors specialized to
6592 element types other than T, or for non-simple multidimensional arrays,
6593 have not been addressed. They could almost certainly be handled the
6594 same way if anyone is motivated to do so.)
6595 * The changes in array handling break binary compatibility, so
6596 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6597 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6598 instead of (VALUES T T).
6599 * By following the instructions that Dan Barlow posted to sbcl-devel
6600 on 2 July 2000, I was able to enable primitive dynamic object
6601 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6602 functionality is not implemented (since it calls ld to resolve
6603 library references automatically, requiring RUN-PROGRAM for its
6604 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6605 try to resolve library references) is now supported.
6606 * The system now flushes the standard output streams when it terminates,
6607 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6608 them at several other probably-convenient times, e.g. in each pass of
6609 the toplevel read-eval-print loop, and after evaluating a form given
6610 as an "--eval" command-line option. (These changes were motivated by a
6611 discussion of stream flushing issues on cmucl-imp in August 2000.)
6612 * The source transform for TYPEP of array types no longer assumes
6613 that an array whose element type is a not-yet-defined type
6614 is implemented as an array of T, but instead punts, so that the
6615 type will be interpreted at runtime.
6616 * There is now some support for cross-compiling in make.sh: each of
6617 the phases of make.sh has its own script. (This should be transparent
6618 to people doing ordinary, non-cross-compile builds.)
6619 * Since my laptop doesn't have hundreds of megabytes of memory like
6620 my desktop machine, I became more motivated to do some items on
6621 my to-do list in order to reduce the size of the system a little:
6622 ** Arrange for various needed-only-at-cold-init things to be
6623 uninterned after cold init. To support this, those things have
6624 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6625 symbols with such names are now uninterned after cold init).
6626 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6627 fasl files for cold load.
6628 ** Remove the old compiler structure pooling code (which used to
6629 be conditional on the target feature :SB-ALLOC) completely.
6630 ** Redo the representation of some data in cold init to be more compact.
6631 (I also looked into supporting byte compiled code at bootstrap time,
6632 which would probably reduce the size of the system a lot, but that
6633 looked too complicated, so I punted for now.)
6634 * The maximum signal nesting depth in the src/runtime/ support code has
6635 been reduced from 4096 to 256. (I don't know any reason for the very
6636 large old value. If the new smaller value turns out to break something,
6637 I'll probably just bump it back up.)
6638 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6640 * Many, many bugs reported by Peter Van Eynde have been added to
6641 the BUGS list; some have even been fixed.
6642 * While enabling dynamic object file loading, I tried to make the
6643 code easier to understand, renaming various functions and variables
6644 with less ambiguous names, and changing some function calling
6645 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6646 * While trying to figure out how to do the OpenBSD port, I tried to
6647 clean up some of the code in src/runtime/. In particular, I dropped
6648 support for non-POSIX signal handling, added various comments,
6649 tweaked the code to reduce the number of compilation warnings, and
6650 renamed some files to increase consistency.
6651 * To support the new automatic configuration functionality in make.sh,
6652 the source file target-features.lisp-expr has been replaced with the
6653 source file base-target-features.lisp-expr and the machine-generated
6654 file local-target-features.lisp-expr.
6655 * fixed a stupid quoting error in make.sh so that using CMU CL
6656 "lisp -batch" as cross-compilation host works again
6658 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6660 * DESCRIBE no longer tries to call itself recursively to describe
6661 bound/fbound values, so that it no longer fails on symbols which are
6662 bound to themselves (like keywords, T, and NIL).
6663 * DESCRIBE now works on generic functions.
6664 * The printer now prints less-screwed-up representations of closures
6665 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6666 * A private symbol is used instead of the :EMPTY keyword previously
6667 used to mark empty slots in hash tables. Thus
6668 (DEFVAR *HT* (MAKE-HASH-TABLE))
6669 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6670 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6671 now does what ANSI says that it should. (You can still get
6672 similar noncompliant behavior if bang on the hash table
6673 implementation with all the symbols you get back from
6674 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6675 This breaks binary compatibility, since tests for equality to
6676 :EMPTY are wired into things like the macroexpansion of
6677 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6679 * There's now a minimal placeholder implementation for CL:STEP,
6680 as required by ANSI.
6681 * An obscure bug in the interaction of the normal compiler, the byte
6682 compiler, inlining, and structure predicates has been patched
6683 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6684 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6686 * Missing ordinary arguments in a macro call are now detected even
6687 when the macro lambda list contains &KEY or &REST.
6688 * The debugger no longer complains about encountering the top of the
6689 stack when you type "FRAME 0" to explicitly instruct it to go to
6690 the top of the stack. And it now prints the frame you request even
6691 if it's the current frame (instead of saying "You are here.").
6692 * As specified by ANSI, the system now always prints keywords
6693 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6695 * The default initial SIZE of HASH-TABLEs is now smaller.
6696 * Type information from CLOS class dispatch is now propagated
6697 into DEFMETHOD bodies, so that e.g.
6698 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6700 is now basically equivalent to
6701 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6702 (DECLARE (TYPE SINGLE-FLOAT X))
6704 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6705 operation, without having to do run-time type dispatch.
6706 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6707 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6708 * Since I don't seem to be making big file reorganizations very often
6709 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6710 is overflowing my ability to conveniently back them up), I've finally
6711 checked the system into CVS. (The CVS repository is on my home system,
6712 not at SourceForge -- putting it on SourceForge might come later.)
6713 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6714 high-level GC-NOTIFY-FOO functions send their output. (There's
6715 still very little control of where low-level verbose GC functions
6716 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6717 less than it used to -- the GC-NOTIFY-FOO functions are now under
6718 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6719 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6720 in only one place in the source code, and propagates it automatically
6721 everywhere that it's needed. Thus e.g. when I bump the version from
6722 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6723 * The C source files now include boilerplate legalese and documentation
6724 at the head of each file (just as the Lisp source files already did).
6725 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6726 to his page will be replaced with a link to his new CLiki service.
6728 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6730 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6731 * The build process now looks for GNU make under the default name "gmake",
6732 instead of "make" as it used to. If GNU make is not available as "gmake"
6733 on your system, you can change this default behavior by setting the
6734 GNUMAKE environment variable.
6735 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6736 can build without error under CMU CL.
6738 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6740 * There is now a partial SBCL user manual (with some new text and some
6741 text cribbed from the CMU CL manual).
6742 * The beginnings of a profiler have been added (starting with the
6743 CMU CL profiler and simplifying and cleaning up). Eventually the
6744 main interface should be through the TRACE macro, but for now,
6745 it's still accessed through vaguely CMU-CL-style functions and macros
6746 exported from the package SB-PROFILE.
6747 * Some problems left over from porting CMU CL to the new
6748 cross-compilation bootstrap process have been cleaned up:
6749 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6750 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6751 part when getting rid of the compiler *BACKEND* stuff.)
6752 ** The value of *NULL-TYPE* was screwed up, because it was
6753 being initialized before the type system knew the final
6754 definition of the 'NULL type. This screwed up several key
6755 optimizations in the compiler, causing inefficiency in all sorts
6756 of places. (I found it because I wanted to understand why
6757 GET-INTERNAL-RUN-TIME was consing.)
6758 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6759 PROCLAIM FTYPE information. Unfortunately this broke binary
6760 compatibility again, since now the forms output by DEFGENERIC
6761 to refer to functions which didn't exist in 0.6.3.
6762 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6763 can use the new (as of 0.6.3) transform for SOME into MAP into
6765 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6766 values to (INTEGER 0 1000000), so that the time code will no longer
6767 occasionally get blown up by Linux returning 1000000 microseconds
6768 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6769 its output conform to the ANSI spec. (Alas, this makes its output
6770 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6771 * A full call to MAP NIL with a single sequence argument no longer conses.
6772 * fixes to problems pointed out by Martin Atzmueller:
6773 * The manual page no longer talks about multiprocessing as though
6774 it were currently supported.
6775 * The ILISP support patches have been removed from the distribution,
6776 because as of version 5.10.1, ILISP now supports SBCL without us
6777 having to maintain patches.
6778 * added a modified version of Raymond Toy's recent CMU CL patch for
6779 EQUALP comparison of HASH-TABLE
6781 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6783 * The system still can't cross-compile itself with
6784 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6785 entails), but at least it can compile more of itself that way
6786 than it used to be able to, and various buglets which were uncovered
6787 by trying to cross-compile itself that way have now been fixed.
6788 * This release breaks binary compatibility again. This time
6789 at least I've incremented the FASL file format version to 2, so that the
6790 problem can be detected reliably instead of just causing weird errors.
6791 * various new style warnings:
6792 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6793 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6794 ** using the lexical binding of a variable named in the *FOO* style
6795 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6796 as specified by ANSI.
6797 * *RANDOM-STATE* is no longer automatically initialized from
6798 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6799 default behavior of the system is to repeat its behavior every time
6800 it's run. If you'd like to change this behavior, you can always
6801 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6802 old convention there was no comparably easy way to get the system to
6803 repeat its behavior every time it was run.
6804 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6805 FTYPE declarations has been removed, in favor of their ANSI
6806 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6807 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6808 the types of their sequence arguments can be determined at compile time.
6809 This is done through a new open code expansion for MAP which eliminates
6810 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6811 argument types can be determined at compile time.
6812 * The optimizer now transforms COERCE into an identity operation when it
6813 can prove that the coerced object is already of the correct type. (This
6814 can be a win for machine generated code, including the output of other
6815 optimization transforms, such as the MAP transform above.)
6816 * Credit information has been moved from source file headers into CREDITS.
6817 * Source file headers have been made more standard.
6818 * The CASE macro now compiles without complaining even when it has
6821 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6823 * (Note that the way that the PCL macroexpansions were rewritten
6824 to accommodate the change in DEFGENERIC below breaks binary
6825 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6826 not run under sbcl-0.6.2. Once we get out of alpha releases,
6827 i.e. hit release 1.0.0, we'll probably try to maintain binary
6828 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6829 and sbcl-1.4.4. Until then, however, it might be fairly common
6830 for maintenance releases to break binary compatibility.)
6831 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6833 * The reporting of unhandled signals has been changed to print some
6834 explanatory text as well as the report form. (Previously only
6835 the report form was printed.)
6836 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6837 it defines, so that the compiler no longer issues undefined function
6838 warnings for compiled-but-not-yet-loaded generic functions.
6839 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6840 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6841 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6842 section of the ANSI spec are supported.
6843 * The "" nickname for the "KEYWORD" package has been removed.
6844 The reader still handles symbol tokens which begin with a package marker
6845 as keywords, but it doesn't expose its mechanism for doing so in the
6846 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6847 * The system now issues STYLE-WARNINGs for contradictory TYPE
6848 proclamations. (Warnings for contradictory FTYPE proclamations would
6849 be nice too, but those can't be done usefully unless the type system
6850 is made smarter about FUNCTION types.)
6851 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6852 systematized, so that "*target-*.lisp is supposed to exist only on the
6853 target and imply that there's a related file which exists on the
6854 host, and *host-*.lisp is supposed to exist only on the host and imply
6855 that there's a related file which exists on the target. This involves a
6856 lot of renaming. Hopefully the acute confusion caused by the renaming
6857 will be justified by the reduction in chronic confusion..
6858 ** runtime-type.lisp -> early-target-type.lisp
6859 ** target-type.lisp -> late-target-type.lisp
6860 ** early-host-format.lisp -> early-format.lisp
6861 ** late-host-format.lisp -> late-format.lisp
6862 ** host-error.lisp -> misc-error.lisp
6863 ** early-error.lisp -> early-target-error.lisp
6864 ** late-error.lisp -> late-target-error.lisp
6865 ** host-defboot.lisp -> early-defboot.lisp
6866 ** code/misc.lisp -> code/target-misc.lisp
6867 ** code/host-misc.lisp -> code/misc.lisp
6868 ** code/numbers.lisp -> code/target-numbers.lisp
6869 ** code/early-numbers.lisp -> numbers.lisp
6870 ** early-host-type.lisp -> early-type.lisp
6871 ** late-host-type.lisp -> late-type.lisp
6872 ** host-typep.lisp -> typep.lisp
6873 ** load.lisp -> target-load.lisp
6874 ** host-load.lisp -> load.lisp
6875 ** host-disassem.lisp -> disassem.lisp
6876 ** host-insts.lisp -> insts.lisp
6877 ** byte-comp.lisp -> target-byte-comp.lisp
6878 ** host-byte-comp.lisp -> byte-comp.lisp
6879 ** host-signal.lisp -> signal.lisp
6880 ** host-defstruct.lisp -> defstruct.lisp
6881 ** late-target-type.lisp -> deftypes-for-target.lisp
6882 Furthermore, several other previously target-only files foo.lisp (e.g.
6883 hash-table.lisp and random.lisp) have been split into a target-and-host
6884 foo.lisp file and a target-only target-foo.lisp file, with their key type
6885 definitions in the target-and-host part, so that the cross-compiler will
6886 know more about target types.
6887 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6888 gone away. In their place are various *BACKEND-FOO* variables
6889 corresponding to the slots of the old structure.
6890 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6891 into the target SBCL has been fixed.
6892 * The chill.lisp system for loading cold code into a running SBCL
6894 * Support for the CMU CL "scavenger hook" extension has been removed.
6895 (It was undocumented and unused in the CMU CL sources that SBCL was
6896 derived from, and stale in sbcl-0.6.1.)
6897 * Various errors in the cross-compiler type system were detected
6898 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6899 (enabling various consistency checks). Many of them were fixed,
6900 but some hard problems remain, so the compiler is back to
6901 running without *TYPE-SYSTEM-INITIALIZED* for now.
6902 * As part of the cross-compiler type system cleanup, I implemented
6903 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6904 * I have started adding UNCROSS calls throughout the type system
6905 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6906 on cross-compiler input files will be able to go away, and various
6908 * CONSTANTP now returns true for quoted forms (as explicitly required
6911 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6913 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6914 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6915 (MAKE-LIST -1). In the longer term, it ought to become true
6916 that declarations are assertions even at SAFETY 1. For now, it's not
6917 quite true even at SAFETY 3, but it's at least more nearly true..
6918 (Note that this change seems to increases the size of the system by
6919 O(5%) and to decrease the speed of the compiler by 20% or more.)
6920 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6921 for the problem of printing dozens of lines of distracting information
6922 about low-level system machinery as part of the top stack frame
6923 on entry to the debugger when an undefined function was called.
6924 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6925 is not reset to COMMON-LISP-USER.
6926 * Compilation of stuff related to dyncount.lisp has been made conditional
6927 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6928 smaller. The various dyncount-related symbols have been moved into
6929 a new "SB-DYNCOUNT" package.
6930 * tty-inspect.lisp has been renamed to inspect.lisp.
6931 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6932 feature has gone away. (When we eventually port to other flavors of
6933 libc and/or Unix, we'll try to make the differences between flavors
6934 invisible at the user level.)
6935 * Various other *FEATURES* tags, and/or their associated conditionals,
6936 have been removed if obsolescent, or given better documentation, or
6937 sometimes given more-mnemonic names.
6939 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6941 * tidied up "make.sh" script
6942 * tidied up system directory structure
6943 * better "clean.sh" behavior
6944 * added doc/FOR-CMUCL-DEVELOPERS
6945 * many many small tweaks to output format, e.g. removing possibly-confusing
6946 trailing #\. character in DESCRIBE-INSTANCE
6947 * (EQUALP #\A 'A) no longer signals an error.
6948 * new hashing code, including EQUALP hashing
6949 * tidied up Lisp initialization and toplevel
6950 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6951 * command line argument processing
6952 * added POSIX-GETENV function to deal with Unix-ish environment variables
6953 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6954 terminating SBCL on EOF
6955 * non-verbose GC by default
6956 * There is no more "sbcl" shell script; the sbcl file is now the C
6957 runtime executable (just like CMU CL).
6958 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6960 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6961 symbol and package information as Lisp native symbol and package objects
6962 instead of strings naming symbols and strings naming packages. This way,
6963 whenever packages are renamed (as in warm init), debug information is
6964 transformed along with everything else.
6965 * tweaked the optimization policy declarations which control the building
6966 of SBCL itself. Now, among other things, the system no longer saves
6967 source location debugging information. (This helps two problems at once
6968 by reducing SBCL size and by keeping SBCL from trying to look for its
6969 sources -- which may not exist -- when reporting errors.)
6970 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6971 debugging and testing purposes
6972 * cleaned up printing, making the printer call PRINT-OBJECT for
6973 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6974 methods, giving nearly-ANSI behavior
6975 * converted almost all special variables to use *FOO* naming convention
6976 * deleted PARSE-TIME functionality, since it can be done portably
6977 * moved some files out of cold init into warm init
6978 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6980 * regularized formatting of source files
6981 * added an install.sh script
6982 * fixed ridiculous memory usage of cross-compiler by making
6983 compiler/alloc.lisp not try to do pooling unless it can hook
6984 itself into the GC of the cross-compilation host. Now the system
6985 builds nicely on my old laptop.
6986 * added :SB-ALLOC in target-features.lisp-expr
6987 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6988 was not implemented)
6989 * re-did condition handling and note reporting in the compiler. Notes
6990 are no longer handled by signalling conditions. Style warnings
6991 and warnings are handled more correctly and reported in such a way
6992 that it's easy to find one or the other in your output (so that you
6993 can e.g. figure out which of many problems caused COMPILE-FILE to
6995 * changed the severity of several compiler warnings from full WARNING
6996 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6997 compiler note reporting so that it doesn't use the condition system
6998 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6999 COMPILE-FILE command)
7000 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
7001 function. As a consequence, START-BLOCK and END-BLOCK declarations are
7002 no longer supported, since their implementation was deeply intertwingled
7003 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
7004 * removed bogus "support" for compiler macros named (SETF FOO), and
7005 removed the compiler macro for SETF INFO (but only after making a fool
7006 of myself on the cmucl-imp mailing list by posting a bogus patch for
7007 DEFINE-COMPILER-MACRO..)
7008 * Compiled files containing forms which have side effects on the Lisp
7009 reader (such as DEFPACKAGE forms) are now handled more correctly.
7010 (Compiler queuing of top level lambdas has been suppressed by setting
7011 *TOP-LEVEL-LAMBDA-MAX* to 0. )
7012 * deleted various currently-unused source files, e.g. gengc.lisp. They
7013 may be added back at some point e.g. when porting to other architectures,
7014 but until they are it's distracting to distribute them and to try to
7016 * deleted "UNCROSS couldn't recurse through.." style warnings, since
7017 there were so many of them they're just distractions, and UNCROSS is
7018 known to be able to handle the current sources
7019 * moved PROFILE functionality into TRACE, so that it will be clear
7020 how the wrapping and unwrapping of functions when you profile them
7021 interacts with the wrapping and unwrapping of functions when you
7022 trace them. (Actually, the functionality isn't there yet, but at least
7023 the interface specification is there. Hopefully, the functionality will
7024 arrive with some future maintenance release.)
7025 * removed host-oops.lisp
7026 * changed signature of QUIT function to allow UNIX-CODE argument
7027 * fixed READ-SEQUENCE bug
7028 * tweaked verbose GC output so that it looks more like the progress
7029 output that ANSI specifies for functions like LOAD
7030 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
7031 * added <http://sbcl.sourceforge.com> to the banner information printed by