1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.1.11:
3 * bug fix: probe-file now can access symlinks to pipes and sockets in
4 /proc/pid/fd on Linux. (reported by Eric Schulte)
6 changes in sbcl-1.1.11 relative to sbcl-1.1.10:
7 * enhancement: support building the manual under texinfo version 5.
9 * enhancement: Windows builds no longer display the "Kitten of Death" message.
10 A warning is instead appended to the regular banner, and may be muted with
11 --noinform. (lp#728247)
12 * enhancement: support building under new linker handling of syscalls under
13 NetBSD. (thanks to Robert Swindells)
14 * bug fix: undefined function errors are now properly reported on PPC and MIPS.
15 (regression since 1.1.9)
16 * bug fix: (funcall (function X junk)) didn't causes an error when X had a
17 compiler macro. (thanks to Douglas Katzman).
18 * bug fix: signal a warning when defining a setf-function when a
19 setf-expander is already present. (thanks to Douglas Katzman).
20 * bug fix: improved threading on PPC.
21 * bug fix: ROOM works again on Windows. (lp#1206456)
22 * bug fix: Streams were flushed even when there was one byte still left in
23 the buffer. (lp#910213)
24 * bug fix: OPEN handles correctly when :if-exists and :if-does-not-exist are
25 either NIL or :ERROR. (reported by Jan Moringen)
27 changes in sbcl-1.1.10 relative to sbcl-1.1.9:
28 * enhancement: ASDF has been updated to 3.0.2.
29 * optimization: stack frames are packed more efficiently on x86oids, which
30 ought to reduce the frequency of Methuselahn conservative references (it
31 certainly helps with gc.impure.lisp / BUG-936304 on x86).
32 * optimization: on x86 and x86-64, integer negation forms like (- x) are now
33 recognized in modular arithmetic contexts, and compile to native negate,
34 rather than going through bignums only to keep the low bits.
35 * bug fix: Compiling potential modularic arithmetic forms does not cause type
36 errors when some integer types lack lower or upper bounds. (lp#1199127)
37 * bug fix: Non-trivial modular arithmetic forms are always cut to the right
38 bitwidth before being used in a non-modular context. (lp#1199428)
39 * bug fix: Multiple catch/unwind blocks in a single function are now
40 allocated in the right stack order on win32. (lp#1072739)
42 changes in sbcl-1.1.9 relative to sbcl-1.1.8:
43 * new feature: the contrib SB-GMP links with libgmp at runtime to speed
44 up arithmetic on bignums and ratios. (contributed by Stephan Frank)
45 * enhancement: disassemble now annotates some previously missing static
46 functions, like LENGTH.
47 * enhancement: clean.sh now also cleans doc/internals.
48 * enhancement: SB-EXT:PRINT-SYMBOL-WITH-PREFIX can be used within ~// to
49 print a symbol with a package prefix.
50 * enhancement: The debugger and backtracing are more robust against buggy
52 * optimization: calls to static functions on x86-64 use less instructions.
53 * optimization: compute encode-universal-time at compile time when possible.
54 * optimization: when referencing internal functions as #'x, don't go through
55 an indirect fdefn structure.
56 * optimization: SLEEP doesn't cons on non-immediate floats and on ratios.
57 * optimization: (mod fixnum) type-checks are performed using one unsigned
58 comparison, instead of two.
59 * optimization: enable more modular arithmetic transforms in the presence of
61 * optimization: bitwise OR forms can now trigger modular arithmetic as well,
62 when the result is known to be negative.
63 * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
64 * optimization: comparisons between rationals and constant floats or between
65 integers and constant ratios are now converted to rationals/integers at
67 * optimization: Smaller and faster DOUBLE-FLOAT-LOW-BITS on x86-64.
68 * bug fix: problems with NCONC type derivation (reported by Jerry James).
69 * bug fix: EXPT type derivation no longer constructs bogus floating-point
70 types. (reported by Vsevolod Dyomkin)
71 * bug fix: sb-bsd-sockets has correct declaration of the canonname field of
72 addrinfo. (lp#1187041, patch by Jerry James)
73 * bug fix: uninitialized type-error conditions can now be printed.
75 * bug fix: tests for sb-bsd-sockets no longer use a predefined port for
76 listening, allowing several tests to run in parallel.
77 * bug fix: during disassembly to *COMPILER-TRACE-OUTPUT* instruction
78 prefixes as used on x86 and x86-64 no longer sometimes print incorrectly.
80 * bug fix: Specialised SIMD-PACK types can be negated.
81 * bug fix: Modular arithmetic is more robust. (incidentally fixes another bug
82 reported by Eric Marsden)
83 * bug fix: FP return values from foreign calls are always rounded to single
84 or double float precision on x87.
85 * bug fix: Known-safe vector access on x86oids should not fail spuriously
86 when the index is of the form (+ x constant-positive-integer).
87 * bug fix: Remove GPL-licensed files from source distribution. (lp#1185668)
88 * bug fix: backtrace printer no longer tries to create very large lists when
89 the arg-count register is clobberred by other code. (lp#1192929)
90 * bug fix: x86 should never signal an FP exception while boxing an FP value,
91 a situation that lands us into ldb.
93 changes in sbcl-1.1.8 relative to sbcl-1.1.7:
94 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
95 ROOM, plus a few SB-INTROSPECT functions) has been completely
96 rewritten; it may now exhibit different bugs than before.
97 * new feature: minimal runtime/compiler intrastructure support for SSE
98 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
99 feature :sb-simd-pack. This should enable intrinsics extensions as
100 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
101 for maintaining a branch for so long.
102 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
103 the working directory of the spawned process.
104 (lp#791800) (patch by Matthias Benkard)
105 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
106 stack-allocated on PPC.
107 * enhancement: "fixed objects" can now be stack-allocated on PPC.
108 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
109 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
110 also returns VOPs which do not translate any functions, and finds
111 defoptimizer types ir2convert and stack-allocate-result.
112 * enhancement: better type derivation for APPEND, NCONC, LIST.
114 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
115 heap in a manner similar to the GC rather than its previous ad-hoc
116 scheme, and is therefore no less and possibly more accurate.
117 * fixes and enhancements related to Unicode:
118 ** the character database information has been updated to Unicode 6.2;
119 ** support for canonical and compatibility decomposition of characters has
120 been added, along with support for primary composition;
121 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
122 NFKD) has been included;
123 ** querying the character database for code points not defined by Unicode
124 gives less wrong answers (lp#1178038, reported by Ken Harris)
125 * enhancement: print intermediate evaluation results for some ASSERTed
126 expressions. (lp#789497) (patch by Alexandra Barchunova)
127 * enhancement: x86-64 disassemblies are annotated with unboxed constant
128 values when there are references to (RIP-relative) unboxed constants.
129 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
130 of quadratically with the size of the input in the worst case.
132 * bug fix: handle errors when initializing *default-pathname-defaults*,
133 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
134 decoding errors, or directories being deleted.
135 * bug fix: Loading a core with a discontiguous dynamic space now correctly
136 computes the amount of dynamic space used.
137 * bug fix: disassembler missing ",8" on SHLD
138 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
139 that provide an "invalid" stack frame link for the signal handler
140 itself now use the saved-fp-and-pc mechanism to pick up from the stack
141 frame in the interrupt (signal) context. This is known to affect
142 threaded FreeBSD/x86-64.
143 * bug fix: some LOOP statements couldn't be compiled.
145 * bug fix: sb-sequence:dosequence works on literal vectors.
146 * bug fix: errors in generic arithmetic show the assembly routine's
147 caller on x86 and x86-64. (lp#800343)
148 * bug fix: Compile-time type errors should never result in COMPILE-FILE
150 * bug fix: Known bad local calls do not cause strange failures when
151 emitting or dumping code. (lp#504121)
152 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
153 codegen errors: type checks are inserted as necessary. (lp#1177703)
154 * bug fix: Unsigned modular arithmetic is correctly converted into signed
155 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
156 * bug fix: a combination of inlined local function with &optional and
157 recursion no longer causes undescriptive compiler errors. (lp#1180992)
158 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
159 when testing for non-zero-ness.
160 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
162 * bug fix: Type mismatch for the value of conditional expressions are
163 correctly reported when detected at compile-time, instead of complaining
164 about a constant NIL (similar for non-EQ-comparable catch tags).
165 * bug fix: Referring to INLINE global functions as values should not result
166 in a compilation failure. (lp#1035721)
167 * optimization: faster ISQRT on fixnums and small bignums
168 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
169 * optimization: On x86-64, the number of multi-byte NOP instructions used
170 for code alignment is now always minimal.
171 * optimization: On 64-bit targets, the compiler generates much faster
172 code for type checks for types known at compile time that are smaller
173 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
174 their COMPLEX variants.
175 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
176 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
177 * optimization: ROOM no longer conses so egregiously on non-x86oid
179 * optimization: associative bitwise operations reassociate patterns like
180 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
182 * optimization: quasiquote expressions now perform more constant folding,
183 instead of consing equal lists at runtime. (lp#1026439)
184 * optimization: local call analysis of inlined higher-order function
185 should converge more quickly, resulting in better code for complex
187 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
188 integer constants are handled more cleverly, especially when they
189 can be represented as sign-extended (signed-byte 32). (Based on a
190 patch by Douglas Katzman)
191 * optimization: IF/IF conversion should reliably result in sane code
192 when (some of) the results of the inner IF are always false or
194 * optimization: On x86oids, variable right shifts of machine words are
195 compiled into straight SAR/SHR, instead of going through the generic
198 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
199 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
201 * bug fix: :allocation slot option works for condition slots
203 * bug fix: redefining conditions does not lead to multiple evaluations of
204 hairy slot initfunctions anymore (lp#1164969)
205 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
207 * bug fix: function constants now work as initforms and default initarg
208 values of conditions (lp#539517)
209 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
210 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
211 * bug fix: no more bogus ## references when pretty printing backquoted
212 forms with non-trivial structure sharing. (lp#1161218)
213 * bug fix: Don't signal an error on (setf (documentation nil 'function)
214 "doc"). Signal a style-warning instead when trying to set documentation
215 of NIL for all other documentation types. (Reported by Zach
216 Beane; regression since 2e52fa05.)
217 * bug fix: modular arithmetic involving large constants and conditionals
218 should no longer result in spurious dead code elimination. (Reported by
220 * bug fix: our mach exception handler can seemingly called very early in
221 the program execution process on OS X 10.8.0. Try and handle that case
222 robustly, without potentially leaking mach ports too much.
223 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
225 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
226 * enhancement: the continuable error when defknown-ing over extant
227 fndb entries can be ignored by passing :overwrite-fndb-silently t
228 as a keyword argument to sb-c:defknown (after attributes). Useful
229 to allow defknown to be re-loaded. Use with :allow-other-keys t
230 for backward compatibility.
231 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
233 * bug fix: Prevent a make-array transform from modifying source forms
234 causing problems for inlined code. Thanks to Bart Botta.
235 (regression since 1.0.42.11-bis)
236 * bug fix: clear-output calls the correct gray stream routine,
237 sb-gray:stream-clear-output. (lp#1153257)
238 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
240 * bug fix: Better error messages for package operations (lp#1154776)
241 * bug fix: delete-package on a nonexistent package should signal a cerror.
242 (regression since 1.0.37.44).
243 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
244 (lp#1154946, lp#1072112)
245 * bug fix: compiling make-array no longer signals an error when the
246 element-type is an uknown type, a warning is issued instead.
247 Thanks to James Kalenius (lp#1156095)
248 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
249 produces wrong results for some inputs. (Thanks to Jan Moringen.)
252 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
253 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
255 * new feature: package local nicknames. See manual for details.
256 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
257 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
258 * enhancement: easier to use restarts for resolving name-conflicts
259 resulting from IMPORT, EXPORT, or USE-PACKAGE.
260 * enhancement: variant DEFPACKAGE forms now signal a full error with
261 restarts provided for resolving the situation. (lp#891351)
262 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
263 DEFPACKAGE forms can now signal a full error with restarts provided for
264 resolving the situation. See manual for details. (lp#891351)
265 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
266 (Thanks to Anton Kovalenko.) (lp#1102748)
267 * enhancement: backtrace improvements
268 ** secondary CLOS dispatch functions have better debug names (lp#503081)
269 ** easier to read method names in backtraces. See
270 SB-DEBUG:*METHOD-FRAME-STYLE*.
271 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
272 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
273 SB-DEBUG:BACKTRACE-AS-LIST.
274 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
275 information is available in less intrusive form as frame annotations.
276 * enhancement: SB-POSIX now provides MAP-ANON.
277 * enhancement: test-suite results are colorized, failures in red, unexpected
278 success in green. Works on Windows and on terminals with ANSI escape code
279 support. Can be disabled with --no-color.
280 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
281 (thanks to James M. Lawrence)
282 * bug fix: no more unused variable style warnings from RESTART-CASE
283 macroexpansion (lp#1113859)
284 * bug fix: no more unused variable style warnings when loading
285 sb-bsd-sockets.asd (lp#1114681)
286 * bug fix: deleting a package removes it from implementation-package
287 lists of other packages.
288 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
289 This does not fix the occasional "interrupt already pending" issue, though.
290 * bug fix: (setf (documentation 'x 'function)) and
291 (setf (documentation #'x t)) set documentation in different places.
292 (regression since 1.0.43.63)
293 * bug fix: build on newer glibc. (lp#1095036)
295 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
296 * optimization: LOOP expressions using "of-type character" have slightly
297 more efficient expansions.
298 * bug fix: very long (or infinite) constant lists in DOLIST do not result
299 in very long compile times or heap exhaustion anymore. (lp#1095488)
300 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
301 * bug fix: adjust-array ignored :initial-element for simple-vectors.
303 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
304 longer cause infinite loops (on circular data) or violate eqlity
305 constraints. (lp#1099708)
306 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
308 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
309 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
311 * enhancement: support for C-c to interrupt the foreground thread
312 on Windows. (Thanks to Anton Kovalenko.)
313 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
314 * enhancement: Safepoint builds on POSIX platforms can now optionally be
315 built without pseudo-atomic sequences and their run-time overhead.
316 * enhancement: Threads created outside of Lisp can enter Lisp through
317 alien callbacks and appear as Lisp threads for the duration of that
318 function invocation. On safepoint builds only.
319 * enhancement: Miscellaneous improvements to namestrings and underlying
320 calls to OS functions for file system access on Windows. (Thanks to
322 * enhancement: The MSI installer support for Windows now uses Windows
323 Installer XML at least version 3.5 and includes various usability
324 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
325 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
326 on Windows. (Thanks to Anton Kovalenko.)
327 * enhancement: The Windows backend now supports the x86-64 platform.
328 (Thanks to Anton Kovalenko.)
329 * bug fix: fasls are now once again directly executable (on platforms
330 supporting shebang lines, with a suitably-installed sbcl).
331 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
332 * bug fix: Fix CAS access to slots of direct instances of structure classes
333 in the presence of subclasses sharing the same conc-name.
334 * bug fix: Logical pathname namestrings on Windows have been changed to
335 be lower-case, to minimize differences between POSIX and Windows.
337 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
338 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
339 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
340 (NT 5.0) is no longer being maintained.
341 * notice: Starting with this version, SBCL on Windows no longer supports
342 building with disabled thread support.
343 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
344 * enhancement: New feature sb-dynamic-core allows the runtime to be
345 rebuilt or relocated without requiring changes to the core file on
346 all linkage table platforms. Required on Windows. (Thanks to Anton
348 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
349 * enhancement: I/O on Windows unnamed pipes is interruptible
350 asynchronously using interrupt-thread, timers when running on Windows NT
351 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
353 * enhancement: Support for the experimental safepoint-based stop-the-world
354 protocol on the PowerPC platform.
355 * bug fix: Non-blocking reads from the Windows console were not necessarily
356 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
357 * bug fix: stability of threads on Windows has been improved upon through
358 an updated stop-the-world protocol (thanks to Anton Kovalenko).
360 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
361 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
362 (COMPILE and COMPILE-FILE still do.)
363 * optimization: the SPARC backend now supports the precise generational
364 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
365 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
366 * enhancement: add experimental support for the SB-THREAD feature and the
367 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
368 Threads are enabled by default, and this version of SBCL is considered
369 to be the last and final release to officially support building with
371 * optimization: The compiler no longer rotates loops in some cases where
372 this transformation actually lead to worse code being generated.
373 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
374 symbol-macros by lexical bindings.
375 * bug fix: stack allocation was prevented by high DEBUG declaration in
377 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
378 (thanks to SANO Masatoshi)
379 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
380 :JUNK-ALLOWED was true.
381 * bug fix: type derivation inferred overly conservative types for
382 unions of array types. (lp#1050768)
384 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
385 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
386 source annotation of DISASSEMBLE output. Defaults to T.
387 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
388 WAIT-P argument added to WITH-RECURSIVE-LOCK.
389 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
391 * enhancement: Optional features (not enabled by default) allow the
392 use of signals for inter-thread synchronization to be reduced on certain
393 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
394 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
395 to test these experimental features. Known remaining bugs include minor
396 thread safety issues, less timely freeing of memory by GC, and certain
397 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
398 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
399 comparisons, particularly on almost-sorted inputs.
400 * bug fix: Reading floats with large exponents no longer takes too much time
401 before reporting that the exponent is too large.
402 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
403 correctly when the received datagram is larger than the provided buffer.
404 (lp#1023438, thanks to Robert Uhl)
405 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
406 a SYMBOL-VALUE form with a constant symbol argument.
407 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
408 into a DEFCAS defined place was used as the place.
409 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
410 for from bit-vectors.
411 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
412 lead to internal errors or crashes (lp#1058799).
413 * documentation: a section on random number generation has been added to the
416 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
417 * enhancement: implicit generic function warnings now specify the package
418 in which the new generic function is being created.
419 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
420 updates of CAS-able places (similar to Clojure's swap!).
421 * enhancement: run-program no longer decodes and re-encodes environment when
422 :environment argument is not provided. (lp#985904)
423 * enhancement: errors during compiler-macro expansion no longer cause
424 runtime errors, only a compile-time warning, otherwise behaving as if
425 the compiler macro had declined to expand.
426 * optimization: On x86-64, code alignment of block headers is done with
427 multi-byte NOPs now instead of repetitions of the single-byte NOP.
428 * optimization: MAP-INTO is substantially faster when the target sequence is
429 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
430 thanks to James M. Lawrence)
431 * optimization: the compiler no longer heap-conses to check exits in cases
432 where the exit function is dynamic extent, or when it can prove the exit
433 function cannot escape. (lp#1002534)
434 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
435 element type, and vectors that aren't SIMPLE-ARRAYs.
436 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
437 speed (around 1/3 the time in some cases), and a little better in terms of
438 comparison calls. (Thanks to Takeru Ohta)
439 * bug fix: On SPARC, a limitation on the number of code constants emittable
440 by the compiler has been lifted, allowing certain long functions to
441 compiled and assembled which had previously been unsupported; fixes
442 cl-bench on this ISA (lp#1008996).
443 * bug fix: potential for infinite recursion during compilation of CLOS slot
444 typechecks when dependency graph had loops. (lp#1001799)
445 * bug fix: error forms reported with some program-errors were not escaped
447 * bug fix: functions from EVAL are now on more equal footing with functions
448 from COMPILE. (lp#1000783, lp#851170, lp#922408)
449 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
450 objects as its :METHOD-COMBINATION argument, not just lists designating
451 method combinations. (lp#936513)
452 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
454 * bug fix: restore build on solaris/sparc. (lp#1008506)
455 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
456 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
457 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
458 as keyword arguments no longer accidentally match unevaluated symbols
460 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
461 parameter was zero, now it signals an error. (lp#905817, fixed since
463 * bug fix: run-program with :pty t no longer makes the pty as the process's
465 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
468 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
469 * RANDOM enhancements and bug fixes:
470 ** bug fix: the range and distribution of random integers could be
471 catastrophically wrong when the compiler derived the type of its
472 argument as a disjoint set of small integers.
473 ** bug fix: the distribution of random integers is now completely
474 uniform even when the specified limit is not a power of two.
475 (Previously some values could be about 0.1 % more probable than
476 others in the worst case.) (lp#309467)
477 ** RANDOM on large integer arguments is generally faster and conses
478 less than before; this is visible for fixnums above a length of
479 about 24 bits, but extremely so for bignums: the old implementation
480 used time and space quadratical in the size of the argument there,
481 the new one is linear.
482 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
483 main entry point, SB-EXT:QUIT is deprecated.
484 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
485 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
486 * enhancement: FASL loading no longer grabs the world-lock.
487 * enhancement: GENCGC reclaims space more aggressively when objects being
488 allocated are a large fraction of the total available heap space.
490 * enhancement: backtraces show the correct number of arguments for frames
491 called with too many arguments.
492 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
494 * enhancement: ASDF has been updated 2.21.
495 * optimization: fewer uses of full calls to signed modular functions.
497 * optimization: typechecking alien values is typically 5 x faster.
498 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
500 * bug fix: file compilation performance issues when dumping subtypes
501 of CHARACTER (lp#994487)
502 * bug fix: fixed disassembly of some SSE instructions on x86-64.
503 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
504 OPEN. (lp#969352, thanks to Kambiz Darabi)
505 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
507 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
508 classoid even if X was not the proper name of the class. (lp#941102)
509 * bug fix: declaration leakage between lexical environments due to careless
510 use of NCONC in MAKE-LEXENV. (lp#924276)
511 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
512 *default-pathname-defaults* contains NAME or TYPE components.
513 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
514 from CL package, e.g. (loop . 10).
515 * bug fix: run-program with existent or non-existent files for :output or
516 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
517 returns NIL instead of signalling an obscure error.
518 * bug fix: fix miscompilation of some logand forms with large constant
519 arguments. (lp#974406)
520 * bug fix: account for funcallable-instance objects properly in ROOM.
521 * bug fix: incorrect octets reported for c-string decoding errors.
523 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
525 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
526 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
527 allowing faster release of memory back to the OS. (lp#991293)
528 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
529 existing deadline for the dynamic scope of its body.
530 * bug fix: compiler-internal interval arithmetic needed to be more
531 conservative about open intervals when operated on by monotonic but not
532 strictly-monotonic functions. (lp#975528)
533 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
534 it's also slightly faster. (lp#998926)
535 * bug fix: better error messages for malformed declarations.
537 * bug fix: define-condition didn't return the name of the defined condition.
539 ** improved docstrings: REPLACE (lp#965592)
541 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
542 * bug fix: fix copy-structure. When copying from stack to heap, garbage
543 could end up in the heap making GC unhappy.
544 (Thanks to James Knight, lp#911027)
546 ** SBCL can now be built using Clang.
547 ** ASDF has been updated 2.20.
548 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
549 * bug fix: don't complain about a too-hairy lexical environment for inlining
550 when the function has never been requested for inlining. (lp#963530)
552 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
553 * enhancements to building SBCL using make.sh:
554 ** --fancy can be specified to enable all supported feature enhancements.
555 ** --with-<feature> and --without-<feature> can be used to specify
556 which features to build with.
557 ** --arch option can be used to specify the architecture to build for.
558 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
559 full-blows cross-compilation.)
560 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
561 which allows specifying name of the default interning package for the
563 * enhancement: when *READ-EVAL* is true, arrays with element type other than
564 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
565 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
566 null alien when malloc() fails. (lp#891268)
567 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
568 conditions can be conveniently accessed through function with the same
569 name, analogously to CONTINUE.
570 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
571 from the printer by type, causing an error marker to be printed instead.
572 (Thanks to Attila Lendvai)
573 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
574 generally behave better when errors occur during printing.
575 * enhancement: the test runner now takes a --report-skipped-tests argument
576 to report the individual tests skipped as well as the number of skipped
578 * enhancement: undefined functions now appear in backtraces as ("undefined
579 function") instead of ("bogus stack frame") on x86oids.
580 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
581 deadlock errors are reported in an easier-to-decipher manner.
582 * enhancement: DESCRIBE on type designators reports the expansion in more
584 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
585 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
586 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
587 * enhancement: better disassembly of segment-prefixes on x86 and other
588 instruction prefixes (e.g. LOCK) on x86 and x86-64.
589 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
590 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
591 * optimization: SUBSEQ on vectors of unknown element type is substantially
593 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
594 be stack-allocated. (lp#902351)
595 * optimization: the compiler is smarter about representation selection for
596 floating point constants used in full calls.
597 * optimization: the compiler no longer refuses to coerce large fixnums to
598 single floats inline, except on x86 where this limitation is still
600 * optimization: truncation operations on integers with constant divisor
601 arguments 1 and -1 are optimized away.
602 * bug fix: deadlock detection could report the same deadlock twice, for
603 two different threads. Now a single deadlock is reported exactly once.
604 * bug fix: interval-arithmetic division during type derivation did not
605 account for signed zeros.
606 * bug fix: compiler error when typechecking a call to a function with
607 non-constant keyword arguments.
608 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
609 * bug fix: condition slot accessors no longer cause undefined function
610 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
611 form that defines them. (lp#896379)
612 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
614 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
615 bogusly report NIL, T.
616 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
617 required arguments ignored and performed assignments to others.
619 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
620 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
621 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
622 * bug fix: redefining a function whose previous definition contained an
623 unknown type no longer causes a style-warning. (lp#806243)
624 * bug fix: undefined functions now appear in backtraces as ("undefined
625 function") instead of ("bogus stack frame") on non-x86oids.
626 * bug fix: backtraces are no longer cut off at ("undefined function") when
627 called under certain circumstances (involving a caller-allocated stack
629 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
630 systems. (regression since 1.0.53)
631 * bug fix: GC deadlocks from dladdr() on certain platforms.
632 * bug fix: broken standard streams no longer automatically cause recursive
633 errors on debugger entry.
634 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
635 (regression since 1.0.53)
636 * bug fix: attempts to stack allocate a required argument to a function with
637 an external entry point caused compiler-errors.
638 * bug fix: compiler notes for failed stack allocation for a function argument
639 no longer claim to be unable to stack allocate the function.
640 * bug fix: COERCE now signals a type-error on several coercions to
641 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
642 * bug fix: missing failure-to-stack-allocate compiler notes for some
643 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
644 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
646 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
648 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
649 * minor incompatible changes:
650 ** RENAME-FILE on a symbolic links used to rename the linked-to file
652 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
653 directory, but now signal an error instead. Use TRUENAME to resolve the
654 pathname if you wish to delete the linked directory, and DELETE-FILE if
655 you wish to delete the
656 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
657 symbols associated with it will trigger a compile-time warning.
658 * thread-related enhancements:
659 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
660 Many thanks to generous donors!)
661 ** Threading is now more reliable on non-Linux platforms. We still don't
662 consider threads on non-Linux platforms good enough to enable them by
663 default, but they're in a clearly better shape now.
664 ** Deadlines supported now on all platforms.
665 ** All blocking functions in the threading API now have a :TIMEOUT
667 ** Semaphore notification objects have been added to SB-THREAD.
668 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
669 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
670 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
671 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
672 using an API anologous to defining new SETFable places.
673 * GC-related enhancements and bug fixes:
674 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
675 and Gb suffixes. Default is megabytes as before.
676 ** on GENCGC targets, the default dynamic space size is now 512Mb for
677 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
678 exception, defaulting to mere 444Mb to fit under default ulimits.) The
679 new defaults are in place to prevent hitting swap on low-end systems.
680 Use build-time option --dynamic-space-size to build an SBCL with
681 another default, or the runtime option to adjust the size at startup: a
682 good size is at most equal to the amount of physical memory the system
684 ** on GENCGC targets, nursery and generation sizes now default to 5% of
686 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
687 refuses to create SIMPLE-FUN objects.
688 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
690 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
691 validation of pointer objects as GENCGC does, instead of a
692 comparatively weak bounds-check against the heap spaces.
693 * SB-BSD-SOCKETS bug fixes:
694 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
695 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
696 systems with getaddrinfo().
697 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
698 safe outside systems with getaddrinfo().
699 * enhancement: ASDF has been updated 2.019.
700 * enhancement: special-case TCO prevention for functions which never return
701 extended to untrusted types, keeping one more frame's worth of debug
702 information around in many cases.
703 * enhancement: debug-names of anonymous and local function are more
704 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
705 * enhancement: on win32, ABS of complex floats guards better against
706 overflows. (lp#888410)
707 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
708 process exiting with code 1. (lp#676987)
709 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
710 the system where on the filesystem the SBCL sources themselves are
711 located. (Thanks to Zach Beane)
712 * enhancement: the compiler is now able to derive tighter bounds for
713 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
714 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
715 correctly, even on wide-fixnum builds. (lp#887220)
716 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
717 resolved to directories.
718 * bug fix: type mismatch when assigning to lexical variables no longer
719 result in fasl-dumping internal type objects. (lp#890750)
720 * bug fix: type mismatch on (SETF AREF) and function return values no
721 longer result in fasl-dumping internal type objects.
722 * bug fix: With several combinations of argument types, for example (EXPT
723 <integer> <(complex double)>), EXPT now uses double-precision throughout
724 instead of partially calculating only to single-precision. (lp#741564;
725 thanks to Lutz Euler)
726 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
727 objects when interrupted by GC on PPC.
729 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
730 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
731 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
732 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
733 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
734 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
735 targets is now 63 bits (up from 61).
736 * enhancement: DESCRIBE now reports a lambda-list and source location
737 for complext setf-expanders.
738 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
739 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
740 of multiple-valued places to be set to NIL, instead of signalling an
741 error (per a careful reading of CLHS 5.1.2.3).
742 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
743 * bug fix: repair crash in x86oid darwin signal handling emulation
744 when built with certain compilers.
745 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
746 rotation arguments on x86-64. (lp#882151)
747 * bug fix: low-level control flow optimisations could result in bogus
748 code in functions with tail and non-tail calls to local functions on
750 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
751 to emit literal characters > (code-char 4095), for comparisons with
753 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
754 on 64 bit platforms. (lp#881445)
755 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
756 delete the wrong file when using relative pathnames. (lp#882877)
757 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
758 sequences and :KEY NIL.
760 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
761 * enhancement: ASDF has been updated to version 2.017.
762 * enhancement: the --core command line option now accepts binaries with
764 * enhancement: when built with :sb-core-compression, core files (regular
765 or executable) can be compressed with zlib. Use the :COMPRESSION
766 argument to SAVE-LISP-AND-DIE to specify a compression level.
767 * enhancement: --[no-]merge-core-pages determines whether the runtime
768 hints the operating system that identical core pages between SBCL
769 processes should share the same physical memory. Default is to only
770 enable this for compressed cores.
771 * optimization: SLEEP no longer conses.
772 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
773 or bit-vectors when using the standard pretty-print dispatch table.
774 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
776 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
777 AREF, CHAR, etc. (lp#826971)
778 * bug fix: compiler-errors causes by integer arguments with composed of
779 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
780 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
781 expressions. (lp#770184)
782 * bug fix: complex single float literals are correctly aligned when used
783 as arguments of arithmetic operators.
784 * bug fix: on 32-bit platforms, rounding of double floats larger than a
785 fixnum is correct. (reported by Peter Keller)
786 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
787 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
789 * bug fix: redefining classes such that slots with custom allocation are
790 added or removed works again.
792 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
793 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
794 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
795 MAKE-SOCKET-STREAM if using SERVE-EVENT.
796 * enhancement: added support for socket keepalive timeout intervals
797 and probe counts on Linux.
798 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
799 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
800 * enhancement: added new toplevel options --quit and --non-interactive
802 * enhancement: the Windows port of SBCL now builds and runs on Wine
803 (thanks to Anton Kovalenko).
804 * enhancement: more, and more correct, SSE instruction definitions on
805 x86-64 (thanks to Alexander Gavrilov).
806 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
807 to help the processor execute spin loops, when applicable. Currently
808 implemented for x86 and x86-64.
809 * optimization: unsigned integer divisions by a constant are implemented
810 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
811 * optimization: improved type-derivation for LOAD-TIME-VALUE.
812 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
813 instructions. (lp#814688)
814 * bug fix: COERCE to unfinalized extended sequence classes now works.
815 (reported by Jan Moringen; lp#815155)
816 * bug fix: a compiler error during typecheck generation, reported by Eric
818 * bug fix: obsolete instance protocol fires when shared slots are added
820 * bug fix: fixed-format floating point printing with scaling factors.
822 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
823 backtraces. (lp#818460)
824 * bug fix: better backtraces for interrupted syscall frames on x86.
826 * bug fix: SSE comparison instructions can be disassembled even when one
827 operand is in memory. (lp#814702)
828 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
829 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
830 type information associated with the VALUES form.
831 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
833 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
834 first write (lp#561642).
835 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
836 * bug fix: bound propagation involving conversion of large bignums to
837 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
839 * bug fix: &REST to &MORE conversion still works in unsafe call to known
840 functions; reported by Lutz Euler (lp#826459).
841 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
844 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
845 * enhancement: errors from FD handlers now provide a restart to remove
846 the offending handler.
847 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
849 * enhancement: location of user or system initialization file can now easily
850 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
851 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
852 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
853 the thunk, as a keyword argument, :arguments.
854 * enhancement: constraint propagation is simplified (and sped up) when
855 COMPILATION-SPEED > SPEED.
856 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
857 * enhancement: debugger understands &MORE arguments better.
858 * optimization: extracting bits of a single-float on x86-64 has been
859 optimized. (lp#555201)
860 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
861 when (> SPEED SPACE).
862 * optimization: local call trampolines (x86 and x86-64) are emitted
864 * optimization: implicit value cells for dynamic-extent closed-over bindings
865 on x86 and x86-64 can hold unboxed values as well.
866 * meta-optimization: improved compilation speed, especially for large
867 functions. (lp#792363 and lp#394206)
868 * bug fix: bound derivation for floating point operations is now more
869 careful about rounding possibly closing open bounds. (lp#793771)
870 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
871 backwards incompatible change in 1.0.48.27)
872 * bug fix: occasional debugger errors in when a type-error occured in a
873 function with dynamic-extent &rest list.
874 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
875 boa-construtors can be used to initialized structure slots.
876 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
877 (lp#795705, regression)
878 * bug fix: DIRECTORY works better on logical pathnames.
879 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
880 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
881 * bug fix: the compiler no longer constant-folds NaNs in
882 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
883 * bug fix: FORMAT now handles floating point rounding correct, eg.
884 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
886 * bug fix: style warning during lambda-list introspection of generic
887 functions with both optional and key argments.
888 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
890 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
893 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
894 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
895 interrupts for its body.
896 * enhancement: source locations are now available for files loaded as
897 source, compile-time-too evaluation, and initialization files.
898 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
899 virtual source-file information, eg. overriding input-file of COMPILE-FILE
900 when a temporary file is used for compilation.
901 * enhancement: ASDF has been updated to version 2.015.3.
902 * enhancement: backtraces involving frames from the default evaluator are
904 * enhancement: RUN-PROGRAM works with user-defined binary input and output
906 * enhancement: more informative compile-time warnings and runtime errors for
907 type-errors detected at compile-time.
908 * enhancement: deadlock detection for mutexes and spinlocks.
909 * enhancement: dynamic-extent for &rest lists stack allocate only their
910 spines, not their argumets. While portable code should not rely on this,
911 particularly in combination with inlining, it should make dynamic-extent
912 easier to use safely.
913 * enhancement: SB-POSIX improvements:
914 ** WNOHANG and WUNTRACED are exported.
915 ** SYSCALL-ERROR now also provides the name of the failing system call.
916 * enhancement: --script improvements:
917 ** errors on standard input, output, and error streams are handled and
918 cause scripts to exit silently, making them easier to use in shell
920 ** backtraces from scripts now go to standard error instead of the
921 terminal even if one is available.
922 ** --script can be an argument, causing the script to be loaded from
924 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
925 strings to foreign memory.
926 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
927 a file, making it easier to understand heap dynamics.
928 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
929 allows the compiler to automatically elide rest-list allocation so long as
930 the call sites are in functions that the compiler knows cannot escape.
932 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
933 especially in safe code when none of the required arguments have changed
935 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
936 uninterruptible, as well as blocking reads from socket streams created
937 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
938 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
939 from the to-char if the from-char is not a dispatch-macro character.
940 * bug fix: references to undefined variables in function calls that are
941 optimized away now signal a runtime error. (lp#722734)
942 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
943 types from a function defined in the same file. (regression from
945 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
947 * bug fix: spurious errors during QUIT when standard streams were closed.
949 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
950 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
951 years, is now no longer supported.
952 * enhancement: read() and write() have been added to SB-POSIX.
953 * enhancement: types of DEFSTRUCT constructors are proclaimed more
954 accurately, allowing better typechecking of call-sites.
955 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
956 are no longer caught. (reverted to pre 1.0.34 behaviour)
957 * optimization: slightly faster ISQRT. (lp#713343)
958 * bug fix: better support for Solaris /bin/sh in sh-based tests.
959 * bug fix: TRACE behaves better when attempting to trace undefined
960 functions. (lp#740717)
961 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
962 to (FUNCALL #'(LAMBDA ...) ...).
963 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
964 a compile-time error. (lp#720382)
965 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
967 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
968 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
969 optimization. (regression from 1.0.45.18/1.0.46.15)
970 * bug fix: package locks did not protects against compile-time side-effects
971 of DEFUN. (lp#675584)
972 * bug fix: --dynamic-space-size argument is validated more carefully.
974 * bug fix: memory fault from printing a malformed simple-condition.
976 * bug fix: redefining classes so that slot-definition classes change now
977 engages the obsolete instance protocol. (lp#766271)
978 * bug fix: constant improper lists could break source coverage recording.
980 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
983 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
984 * bug fix: fix mach port rights leaks in mach exception handling code on
985 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
987 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
988 * enhancement: redefinition warnings for macros from different files. (lp#434657)
989 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
990 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
991 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
992 processed using EVAL -- now the appropriate toplevel form is reported instead.
993 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
994 declarations. (lp#726331)
995 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
996 that NIL/NULL is excluded from the type.
997 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
999 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
1000 and its compatriots.
1001 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
1002 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
1003 stack-allocated values out of their dynamic-extent. (lp#310175)
1004 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
1005 x86-64 builds caused a type-error.
1006 * bug fix: calling COMPILE with something else than a lambda-expression as the
1007 second argument reports a more sensible error. (lp#718905)
1008 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
1009 are detected. (lp#520607)
1010 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
1012 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
1013 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
1014 methods. (regression from 1.0.45.18)
1015 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
1016 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
1017 * bug fix: several foreign functions accepting string also accepted NIL and
1018 consequently caused a memory fault at 0 now signal a type-error instead.
1020 * bug fix: under rare circumstances, constraint propagation could rewrite a
1021 variable reference to refer to a variable not in scope, causing an error
1022 during physical environment analysis when attempting to close over the
1023 variable. (lp#551227)
1024 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
1026 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
1027 * enhancement: largefile support on Solaris.
1028 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
1029 arguments (lp#710017)
1030 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
1031 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
1033 * optimization: ERROR and CERROR are approximately 5 times faster.
1034 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
1035 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
1036 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
1037 up instance creation in those cases.
1038 * optimization: arithmetic operations with multiple constant arguments in now
1039 have them reduced at compile-time. (lp#676414)
1040 * optimization: determining current character position on string-streams for
1041 pretty-printing was overly slow.
1042 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
1043 lifetime analysis to overwrite closed-over variables (lp#681092).
1044 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
1045 were not handled correctly (lp#713063).
1046 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
1048 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
1049 mistake. (lp#667297).
1050 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
1051 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
1052 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
1053 unintern the wrong symbol with the same name. (lp#693796)
1054 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
1055 making it possible to restore the initial table if it has been messed up.
1058 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
1059 * enhancement: ~/ and ~user/ are treated specially in pathnames.
1060 Refer to documentation for details.
1061 * enhancement: ASDF has been updated to version 2.010.
1062 * optimization: mutated closed-over variables that are only accessed by
1063 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
1064 declared to be DYNAMIC-EXTENT) are stored directly in their containing
1065 stack frame, rather than allocating a VALUE-CELL (lp#586103).
1066 * optimization: UNWIND-PROTECT cleanup functions are now declared
1068 * bug fix: backtracing function with &REST arguments now shows the full
1069 argument list. (lp#310173)
1070 * bug fix: return types for functions with complex lambda-lists are now
1071 derived properly (lp#384892)
1072 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
1073 long string arguments slowed the compiler down to a crawl.
1074 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
1075 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
1076 in the DEFMETHOD body.
1077 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
1078 messages, being instead replaced with the corresponding function name.
1079 * bug fix: don't derive overly complex unions of numeric types for arithmetic
1080 operators. (lp#309448)
1082 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
1083 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
1084 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
1085 * enhancement: ALLOCATION-INFORMATION also provides the page the object
1087 * enhancement: default dynamic-space size can be configured at build-time
1088 without touching source, using the --dynamic-space-size argument to make.sh.
1089 * enhancement: DESCRIBE recognizes symbols naming optimization policy
1090 qualities, and mentions ALWAYS-BOUND declarations.
1091 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
1093 * enhancement: ASDF has been updated to 2.009.
1094 * enhancement: the system detects known type-erros in calls better,
1095 signalling a full warning about violated proclaimed FTYPEs and violations
1096 of derived FTYPEs within the same file, including self-calls.
1097 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
1098 * optimization: constant-folding exploits numeric and character types, in
1099 addition member types.
1100 * optimization: numeric, character and member types that are inhabited by
1101 exactly one value are tested with EQL.
1102 * optimization: more conditional branches are eliminated during IR1.
1103 Branches are simplified before performing if/if-conversion, and simple
1104 equivalent branches (that only read the same constant or variable) are
1106 * improvements to the Windows port:
1107 ** change: canonical unparsing form for pathname namestrings now uses / as
1108 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
1109 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
1110 on Windows. (thanks to Kalyanov Dmitry)
1111 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
1113 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
1114 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
1115 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
1116 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
1118 * bug fix: interrupts arriving during CL:OPEN caused an error.
1119 * bug fix: overeager character buffering could cause input to block
1120 spuriously when reading from a pipe (lp#643686)
1121 * bug fix: more efficient timer expiry should avoid starvation on systems
1122 where number of SIGALRMs per second is restricted. (lp#375515)
1123 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
1124 * bug fix: compile-times no longer scale linearly with the size of
1125 quoted lists in source-code. (lp#654289)
1126 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
1127 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
1128 so badly. (lp#654485)
1129 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
1130 an error for eg. STRUCTURE. (lp#458015)
1131 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
1132 (lp#613871, thanks to Roman Marynchak)
1133 * bug fix: more reliable &REST list type derivation. (lp#655203)
1134 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
1135 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
1136 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
1137 also declared NOTINLINE. (lp#655581)
1138 * bug fix: the compiler could attempt to emit constant left shifts of
1139 greater value than n-word-bits. (lp#309063)
1140 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
1141 type information for the function being set. (lp#659220)
1142 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
1143 containing self-calls were recompiled with a new signature, and failed
1144 to warn when a self-call using the old signature was left in. (lp#655126)
1145 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
1146 :DEFAULT when the default external had character size other than 8 bits.
1148 * bug fix: derived types of functions in the same file were implicitly
1149 trusted, leading to potential heap corruption when those function were
1150 defined incompatibly. (lp#657499)
1151 * bug fix: existing ASDF source registries are ignored when building
1152 contribs (lp#659105)
1153 * bug fix: short-form DEFSETF checks that the second argument is a symbol
1154 (lp#655824, thanks to Roman Marynchak)
1155 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
1156 package-lock violation was detected. (lp#660752)
1157 * bug fix: the system can store different docstrings for a single function
1158 under different names. (lp#661631, regression from 1.0.29.24)
1159 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
1160 properly. (lp#384801)
1161 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
1162 of specified length could confuse the type derivation in unsafe code.
1164 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1165 fork with multiple Lisp threads running is made on every platform,
1166 not just Darwin. (lp#451111)
1167 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1168 around when core was saved, which could cause undefined behaviour when the
1170 * bug fix: Allow UNTRACE of functions that are no longer defined
1171 (lp#667657, thanks to Attila Lendvai)
1172 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1173 compile-time warning (lp#664373, thanks to Stas Boukarev)
1175 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1176 * incompatible change: FD-STREAMS no longer participate in the serve-event
1177 event-loop by default. (lp#316072)
1178 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1179 affects streams from CL:OPEN.
1180 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1181 default, but this is liable to change: applications needing serve-event
1182 for socket streams should explicitly request it using :SERVE-EVENTS T
1184 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1186 * enhancement: CLOS effective method functions and defclass slot typechecking
1187 function now have debug names for use in backtraces and profiles.
1188 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1190 * enhancement: symbols are printed using fully qualified names in several
1191 error and warning messages which are often associated with package
1192 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1193 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1194 thanks to Andrew Golding)
1195 * bug fix: reading /proc files on Linux works. (lp#425199)
1196 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1198 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1199 breaking code that tried to write the value of a printer control variable.
1200 (lp#581564, thanks to Stas Boukarev)
1201 * bug fix: WRITE compiler macro did not handle output stream designators
1202 correctly. (lp#598374, thanks to Stas Boukarev)
1203 * bug fix: better availability of names of foreign functions in backtraces
1204 on Linux. (lp#626962, thanks to Stas Boukarev)
1205 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1206 lp#627581, thanks to Josh Elsasser and Jim Wise)
1207 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1208 thanks to Josh Elsasser)
1209 * bug fix: using aliases for builtin classes as defmethod specializers
1210 without adding DEFTYPEs for them works. (lp#618387)
1211 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1213 * bug fix: legally dynamic-extent lists and vectors used as
1214 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1215 * bug fix: inline-expansion creating references to dead lambda-variables
1216 (lp#454681, thanks to Alexey Dejneka)
1217 * bug fix: better error message for bogus numerical arguments to RANDOM.
1218 (lp#598986, thanks to Stas Boukarev)
1219 * bug fix: the compiler occasionally inlined references from incompatible
1220 environments occurs. (lp#308951)
1221 * bug fix: the compiler threw an error when trying to compile a local
1222 function (labels or flet) known to take a specialized complex argument.
1223 (not in launchpad, reported by sykopomp in #lispgames)
1224 * bug fix: package-locks failed to protect against compile-time effects of
1225 DEFUN when the symbol previously had a macro definition. (lp#576637)
1226 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1227 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1228 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1229 * bug fix: evaluation in debugger REPL works using the global context when
1230 in frames that do not have sufficient debug information.
1231 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1233 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1235 * bug fix: interrupt taking longer than the requested period caused SLEEP
1236 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1238 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1240 ** Cross-compilation host is now specified to make.sh using
1241 command-line argument --xc-host=<command> instead of a positional
1242 argument. (thanks to Daniel Herring)
1243 ** Install location can be specified to make.sh using command-line
1244 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1245 * optimization: The default implementation of
1246 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1247 * enhancement: Explicit memory barrier operations are now available for use
1248 by multithreaded code. See documentation for details.
1249 * enhancement: Experimental support for threading on Linux/PPC.
1250 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1251 * bug fix: EXPT signals an error if first argument is a zero and second
1252 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1253 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1254 (lp#576594, thanks to Roman Marynchak)
1255 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1256 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1258 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1259 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1260 cached, leading to many fewer expensive calls to
1261 COMPUTE-APPLICABLE-METHODS.
1262 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1263 CLASS argument, search for and call an appropriate optimized ctor function
1265 * bug fix: WRITE always returns the correct value.
1267 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1268 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1269 * bug fix: Name conflicts between symbols passed as arguments to a single
1270 call to IMPORT no longer add multiple symbols with the same name to the
1271 package (detectable via DO-SYMBOLS).
1272 * bug fix: support building without the dlshim on darwin x86 and x86-64
1274 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1276 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1277 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1279 * bug fix: linkage-table entries on PPC now no longer overflow their
1280 space allocation (potentially causing crashes if they are written out
1282 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1283 platforms, preventing the GC from seeing stale pointers on the control
1284 stack in subsequent GCs (which would, and does, break invariants).
1285 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1286 * bug fix: Literal characters with code points greater than about 32767
1287 now work on PPC UNICODE builds.
1288 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1289 high order bits are explicitly cleared out. In some contrived situations,
1290 this could lead to wrong results in mixed real/complex float arithmetic.
1291 * bug fix: Fix function/macro redefinition warnings when building with
1292 clisp. (lp#576787, thanks to Josh Elsasser)
1293 * new platform: experimental support for ppc/openbsd (thanks to Josh
1295 * bug fix: Floating-point traps now work on ppc/linux.
1297 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1298 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1299 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1300 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1301 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1302 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1303 SB-THREAD:GRAB-MUTEX.
1304 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1305 contain additional data structures and tools for concurrent programming;
1306 at the moment it contains a lock-free queue, and a lock-free mailbox
1308 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1309 GET-MUTEX but takes &key rather than &optional parameters. Also added
1310 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1312 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1313 SB-THREAD:WAIT-ON-SEMAPHORE.
1314 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1316 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1317 conditions to defer the deadline for forever.
1318 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1320 * enhancement: errors from NO-APPLICABLE-METHOD and
1321 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1322 generic function call.
1323 * enhancement: SB-BSD-SOCKET improvements
1324 ** sockets and socket streams now have a more informative printed
1325 representation based on the corresponding SOCKET-NAME and
1327 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1329 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1330 CL:CLOSE when appropriate, and no longer disassociates the stream
1331 from the socket if close failed. (lp#543951)
1332 * improvements to the instrumenting profiler
1333 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1334 ** optimization: counters no longer use locks for the overflow mode.
1335 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1336 incurred an off-by-one miscount.
1337 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1338 * enhancement: improved DEFMETHOD pretty-printing.
1339 * enhancement: perform range reduction when arguments are too large for
1340 x87's transcendentals (instead of returning 0). (lp#327192)
1341 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1342 some of CL-PPCRE's macros. (lp#570079)
1343 * enhancement: our machine code is slightly less hostile to valgrind on
1345 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1346 to Robert Swindells and Aleksej Saushev)
1347 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1348 * bug fix: a rare case of startup-time page table corruption.
1349 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1350 to timeouts could be left in an inconsistent state.
1351 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1352 * bug fix: misoptimization of multiplication by one in
1353 (SB-C::FLOAT-ACCURACY 0) policies.
1354 * bug fix: miscounts in SB-PROFILE.
1355 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1356 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1357 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1358 up itself" (March 2010) for further details.
1359 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1360 against length of the list if the element is found before the specified
1361 END is reached. (thanks to Alec Berryman, lp#554385)
1362 * bug fix: errors signalled during package graph modification no longer
1363 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1364 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1365 :SB-DOC feature. (lp#552564)
1366 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1367 * bug fix: more robust runtime executable path detection. (lp#375549)
1368 * bug fix: GCD always returns positive values. (lp#413680)
1369 * bug fix: Converting division to multiplication by reciprocal handles
1371 * bug fix: We were too eager in eliding range reduction tests on x87.
1372 The maximal magnitude is 2^63, not 2^64.
1373 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1375 * bug fix: Maybe restore buildability on Alpha.
1376 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1378 * bug fix: RANDOM-STATE can be printed readably again.
1379 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1380 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1381 types) could result in type mismatches during compilation.
1383 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1384 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1385 stack frame thrown from.
1386 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1387 compiler optimization qualities inside dynamic extent of its body.
1388 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1389 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1391 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1392 constraint propgation, allowing better compilation eg. when used to
1393 access structures with WITH-SLOTS. (lp#520366)
1394 * optimization: the compiler is now more aware of the type of the underlying
1395 storage vector for multidimensional simple arrays resulting in better code
1396 for accessing such arrays.
1397 * optimization: passing NIL as the environment argument to TYPEP no longer
1398 inhibits optimizing it. (lp#309788)
1399 * optimization: more efficient register usage when handling single-float
1400 arguments on x86-64. (thanks to Lutz Euler)
1401 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1402 pre-allocated temporary vectors. (lp#496249)
1403 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1404 in :INITIAL-CONTENTS. (lp#523612)
1405 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1406 functions. (lp#524707)
1407 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1408 WITH-SLOTS usages during compilation.
1409 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1410 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1411 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1412 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1413 instruction (tested on x86oid linux with ud2-breakpoints).
1414 * bug fix: slam.sh now works on win32.
1415 * bug fix: better differences of numeric types. (lp#309124)
1416 * bug fix: arrays declared intersection and union types can have their
1417 upgraded element type derived. (lp#316078)
1418 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
1419 threads started during profiling. (lp#472499)
1420 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
1422 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
1423 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
1424 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
1425 values instead of signaling an error. (lp#309093)
1426 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
1428 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
1429 declarations (lp#497321)
1430 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1431 and failed to detect circular lists (lp#452008)
1432 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1434 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1435 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1436 due to it, so that handlers can run.
1437 * bug fix: reparsing undefined types if they have become defined since
1438 parsing. (lp#309128)
1439 * bug fix: missing &REST type in a proclamation for a function with both
1440 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1441 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1442 expanded calls (lp#542174)
1443 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1444 than just at toplevel form.
1446 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1447 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1448 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1449 but work on type specifiers.
1450 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1451 to name a type specifier.
1452 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1453 specifier is valid where "valid" basically means "would be accepted as
1454 second argument of TYPEP".
1455 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1456 returns the function's declared, or derived FTYPE.
1457 * new feature: SB-POSIX now supports accessing the d_ino member of
1458 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1459 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1460 provide for seeding a RANDOM-STATE object with user-provided data or
1461 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1462 attempt to initialize the returned state from the operating system's
1463 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1464 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1465 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1466 * bug fix: Fix grammar and style issues for the docstrings of
1467 printer-related variables and functions. (Thanks to mon_key; launchpad
1469 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1471 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1472 in a row even though a handler defered the deadline long into the
1474 * bug fix: A deadline handler was run without interrupts enabled for a
1475 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1476 in infinitely spinning, non-killable threads.
1477 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1478 before reaching the erring stack frame.
1479 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1480 real power. (launchpad bug lp#525949)
1481 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1482 GENCGC platforms. (launchpad bug lp#529014)
1483 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1484 (launchpad bug lp#525916)
1485 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1486 (Thanks to Robert Goldman)
1488 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1489 * optimization: ROUND with a single single-float or double-float argument
1490 is properly inlined when possible.
1491 * optimization: Slightly better code is generated for integer<->float
1492 conversions and for single-float<->double-float conversions on x86-64.
1493 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1494 code for 32-bit and 64-bit rotations on x86-64.
1495 * bug fix: The install script changes the ownership of directories as well
1496 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1497 launchpad bug lp#508485)
1498 * bug fix: TRUNCATE with a single single-float or double-float argument is
1499 properly inlined when possible. (launchpad bug lp#489388)
1500 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1501 no longer causes a compiler error on x86 and ppc.
1502 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1503 always relative to *READTABLE* rather than the passed argument.
1505 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1506 * minor incompatible change: threading support is now enabled by default
1508 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1510 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1511 are now caught and reported just like errors during macroexpansion.
1512 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1513 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1514 * enhancement: ASDF systems can now depends on SB-QUEUE.
1515 * fixes and improvements related to Unicode and external formats:
1516 ** bug fix: error handling and restart usage in the ucs-2 external format
1518 ** there is now an implementation of the ucs-4 external format.
1519 ** the utf-16 and utf-32 external formats are supported.
1520 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1521 in the environment. setenv() and unsetenv() are also provided. (reported by
1522 Fare Rideau; launchpad bug lp#460455)
1523 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1524 loading. This ensures sensible errors for .FASL files from other
1525 implementations on case-insensitive filesystems. (reported by Willem
1526 Broekema; launchpad bug lp#489417)
1527 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1528 Willem Broekema; launchpad bug lp#489698).
1529 * bug fix: some minor code rearrangements to reenable warning-free building
1530 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1531 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1533 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1536 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1537 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1538 * improvement: support O_LARGEFILE access to files larger than 2GB on
1539 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1540 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1541 definitions for methods specializing on the passed class itself.
1542 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1543 definitions for methods specializing on the passed class itself, or on
1545 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1546 about itself during the build (e.g. for M-? in Slime), if this flag is
1547 enabled in customize-target-features.lisp. This will increase the core
1548 size by about 5-6mb, though, so it's mostly interesting to SBCL
1550 * new feature: various GENCGC tuning parameters have been experimentally
1551 documented and exported from SB-EXT. See documentation for details.
1552 * fixes and improvements related to Unicode and external formats:
1553 ** the Unicode character database has been upgraded to the
1554 Unicode 5.2 standard, giving names and properties to a number of new
1555 characters, and providing a few extra characters with case
1557 ** improvement: restarts for providing replacement input/output on coding
1558 errors for fd-stream external formats.
1559 ** improvement: where :<encoding> is a keyword corresponding to an
1560 external format the system supports, it is now possible to specify
1561 (:<encoding> :replacement <character>) as an external format which will
1562 automatically substitute <character> on encoding or decoding errors for
1563 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1565 ** improvement: the file streams underlying the standard streams (such as
1566 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1567 which uses the replacement mechanism to handle encoding errors,
1568 preventing various infinite error chains and unrecoverable I/O
1570 ** minor incompatible change: the utf-8 external format now correctly
1571 refuses to encode Lisp characters in the surrogate range (char-codes
1572 between #xd800 and #xdfff).
1573 ** fix a typo preventing conversion of strings into octet vectors
1574 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1576 ** fix a bug in the octet multibyte handling of decoding errors and the
1577 USE-VALUE restart. (launchpad bug lp#314939)
1578 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1579 restart on fd-stream decoding errors.
1580 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1581 error is near the end of file.
1582 ** fix a double-error case in unibyte octet conversions, when the first
1583 use of USE-VALUE is ignored.
1584 ** fix bugs in handling of undefined code points in unibyte encodings.
1585 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1586 streams after an UNREAD-CHAR.
1587 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1588 object is allocated in a boxed region of dynamic space.
1589 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1590 fork with multiple Lisp threads running is made, instead of going
1591 ahead with unpredictable consequences. (reported by Leslie Polzer)
1592 * bug fix: uses of slot accessors on specialized method parameters within
1593 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1594 error while finalizing the class. This fix may cause classes with slot
1595 accessors to be finalized later than previously. (reported by Lars Rune
1596 Nøstdal; launchpad bug lp#473699)
1597 * bug fix: restore buildability on the MIPS platform. (regression from
1598 1.0.30.38, reported by Samium Gromoff)
1599 * bug fix: inspecting closures is less likely to fail with a type error.
1600 * bug fix: no timer starvation when setting the system clock back.
1601 (launchpad bug lp#460283)
1602 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1603 standard pprint dispatch table as specified by CLHS.
1604 * bug fix: give CLISP a hint about a type declaration to enable it to build
1605 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1607 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1608 (reported by Attila Lendvai; launchpad bug lp#310132)
1609 * bug fix: distinguish in type specifiers between arrays that might be
1610 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1611 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1612 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1613 * bug fix: setting the value of a symbol-macro within a method in the
1614 presence of type declarations works properly again. (reported by Iban
1615 Hatchondo; launchpad bug lp#485019)
1617 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1618 * optimization: faster FIND and POSITION on strings of unknown element type
1619 in high SPEED policies. (thanks to Karol Swietlicki)
1620 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1622 * improvement: better error signalling for bogus parameter specializer names
1623 in DEFMETHOD forms (reported by Pluijzer)
1624 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1626 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1628 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1629 removes previous default initargs (reported by Lars Rune Nøstdal and
1631 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1632 lambda-lists. (reported by Peter Seibel)
1633 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1634 correctly when starting from an executable core without saved runtime
1635 options (reported by Faré Rideau, thanks to Zach Beane)
1636 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1637 an optimization note instead. (reported by Martin Cracauer)
1638 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1639 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1640 new process group if it doesn't need to share stdin with the sbcl
1641 process. (thanks to Leslie Polzer)
1642 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1643 (reported by Stanislaw Halik)
1645 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1646 * improvement: stack allocation is should now be possible in all nested
1647 inlining cases: failure to stack allocate when equivalent code is manually
1648 open coded is now considered a bug.
1649 * improvements related to Unicode:
1650 ** the Unicode character database has been upgraded to the
1651 Unicode 5.1 standard, giving names and properties to a number of new
1652 characters, and providing a few extra characters with case
1654 ** the system now recognizes and produces names for Unicode Hangul
1655 syllable characters.
1656 ** the EBCDIC-US external-format is now supported for octet operations
1657 (as well as for stream operations).
1658 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1659 be used to output toplevel compile-time effects into a separate .CFASL
1661 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1662 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1664 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1666 * optimization: division of floating point numbers by constants uses
1667 multiplication by reciprocal when an exact reciprocal exists.
1668 * optimization: multiplication of single- and double-floats floats by
1669 constant two has been optimized.
1670 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1671 sufficient type information is available. (thanks to Leslie Polzer)
1672 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1673 known structure objects are as efficient as defstruct generated accessors.
1674 * optimization: unused vector creation can now be optimized away.
1675 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1676 * improvement: a STYLE-WARNING is signalled when a generic function
1677 clobbers an earlier FTYPE proclamation.
1678 * improvement: the compiler is able to track the effective type of
1679 generic function across method addition and removal even in the
1680 absence of an explicit DEFGENERIC.
1681 * improvement: DESCRIBE now reports on symbols naming undefined
1682 but assumed or declared function as well.
1683 * improvement: recompilation of systems using SB-GROVEL now works
1684 (thanks to Leslie Polzer)
1685 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1686 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1688 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1689 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1690 well as user defined declaration names.
1691 ** VARIABLE-INFORMATION is now aware of alien variables.
1692 * improvement: improved address space layout on OpenBSD (thanks to Josh
1694 * improvement: pretty-printing of various Lisp forms has been improved
1695 (thanks to Tobias Rittweiler)
1696 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1697 unused were deleted in safe code. (reported by John Fremlin)
1698 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1700 * bug fix: some out-of-line array predicates were missing (reported by
1702 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1704 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1705 (thanks to Larry D'Anna)
1706 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1707 as well. (reported by Josh Elsasser)
1708 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1709 leading to possible attempts to delete the same file twice. See docstring
1710 on DELETE-FILE for details. (reported by John Fremlin)
1711 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1712 designator argument, rather than its truename. (reported by Luis
1714 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1715 information about some array types. (thanks to Luis Oliveira)
1716 * bug fix: moderately complex combinations of inline expansions could
1717 be miscompiled if the result was declared to be dynamic extent.
1718 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1719 form (+ <variable> <integer>) were miscompiled under certain
1721 * bug fix: in some cases no compiler note about failure to stack allocate
1722 was emitted, even if the objects were in fact heap allocated.
1723 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1724 allocation could cause objects users might reasonably expect to
1725 be heap allocated to be stack allocated.
1726 * bug fix: DESCRIBE signalled an error for generic functions under
1727 certain circumstances. (thanks to Leslie Polzer)
1728 * bug fix: Fixed spelling of an error message.
1730 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1731 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1732 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1733 of SB-THREAD:THREAD-ERROR-THREAD.
1734 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1735 * new feature: docstrings for local and anonymous functions are no longer
1736 discarded. (thanks to Leslie Polzer)
1737 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1738 values in other threads.
1739 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1740 about object allocation.
1741 * optimization: division of a real float by a complex float is implemented
1742 with a specialised code sequence.
1743 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1744 keywords is an order of magnitude faster.
1745 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1746 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1747 methods, and similarly for non-standard metaclass classes as long as there
1748 are no methods additional on MAKE-INSTANCE.
1749 * optimization: more efficient type-checks for FIXNUMs when the value
1750 is known to be a signed word on x86 and x86-64.
1751 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1752 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1754 * optimization: compiler is smarter about delegating argument type checks to
1756 * optimization: several character functions are now compiled somewhat more
1757 efficiently. (reported by Lynn Quam)
1758 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1759 * improvement: less unsafe constant folding in floating point arithmetic,
1760 especially for mixed complex/real -float operations.
1761 * optimization: constant double and single floats are stored in native
1762 unboxed format on x86[-64].
1763 * optimization: smarter code for arithmetic operations with constant floats,
1764 complex floats, or integers on x86[-64].
1765 * optimization: smarter code for conjugate/multiplication of float complexes
1766 and abs/negate of floats on x86-64.
1767 * optimization: more efficient complex float and real float operations on
1769 * improvement: complex float division is slightly more stable.
1770 * improvement: DESCRIBE output has been reworked to be easier to read and
1771 contains more pertinent information.
1772 * improvement: failure to provide requested stack allocation compiler notes
1773 provided in all cases (requested stack allocation not happening without a
1774 note being issued is now considered a bug.)
1775 * bug fix: SB-POSIX exports the documented types and functions
1776 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1777 types. (reported by "abhi")
1778 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1779 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1780 (thanks to Paul Khuong)
1781 * bug fix: looping around HANDLER-CASE could silently consume stack space
1782 on each iteration. (reported by "foobar")
1783 * bug fix: better error signalling when calls to functions seeking elements
1784 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1785 (reported by Tobias Rittweiler)
1786 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1787 directory components now works as it used to. (various prolems reported by
1788 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1789 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1790 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1791 * bug fix: bogus undefined variable warnings from fopcompiled references to
1792 global variables. (thanks to Lars Rune Nøstdal)
1793 * bug fix: foreign function names should now appear in backtraces on
1794 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1795 * bug fix: SETF compiler macro documentation strings are not discarded
1797 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1798 (thanks to Alex Plotnick)
1799 * bug fix: SLEEP accepts large integer arguments, truncating them to
1800 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1801 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1802 * bug fix: compiler notes for expensive slot type checks could be emitted
1803 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1805 changes in sbcl-1.0.29 relative to 1.0.28:
1806 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1807 https://bugs.launchpad.net/sbcl
1808 Bugs can be reported directly there, or by sending email to
1809 sbcl-bugs@lists.sourceforge.net
1810 (no subscription required.)
1811 * minor incompatible change: under weak type checking policy integer
1812 types are weakened less aggressively.
1813 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1814 allowed to return, which causes SBCL to quit with exit status 0. Previously
1815 if the function returned with a small integer return value, that value
1816 was accidentally reused as the exit status.
1817 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1818 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1819 :HASH-FUNCTION argument. Refer to user manual for details.
1820 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1822 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1823 microseconds since the Unix epoch on all platforms.
1824 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1825 allows the compiler to safely elide boundedness checks for special
1827 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1828 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1829 efficiency measure for threaded platforms, but also valueable in
1831 * new feature: UNC pathnames are now understood by the system on Windows.
1832 * optimization: the compiler uses a specialized version of FILL when the
1833 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1835 * optimization: accesses to potentially non-simple arrays where element type
1836 is known are 50% faster.
1837 * optimization: compiler now generates faster array typechecking code.
1838 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1840 * optimization: multidimensional array accesses in the absence of type
1841 information regarding array rank are approximately 10% faster due to
1842 open coding of ARRAY-RANK.
1843 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1844 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1846 * optimization: result of call to VECTOR can now be stack allocated.
1847 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1848 as long as the resulting array is one-dimensional and has a known
1849 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1850 length of the list matches the known length of the vector does not
1851 allocate the list as an intermediate step. Ditto for VECTOR and simple
1853 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1854 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1855 known element type, and is known to be simple and one dimensional.
1856 * improvement: SBCL now emits a compiler note where stack allocation was
1857 requested but could not be provided (not in all cases, unfortunately)
1858 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1859 * improvement: pretty-printing loop has been implemented properly. (thanks
1860 to Tobias Rittweiler)
1861 * documentation: CLOS slot typechecing policy has been documented.
1862 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1863 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1864 pointer, leading to memory faults. (thanks to Bart Botta)
1865 * bug fix: better floating point exception handling on x86/OpenBSD.
1866 (thanks to Josh Elsasser)
1867 * bug fix: exit status from QUIT when called under --script was lost
1868 (reported by Hubert Kauker)
1869 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1870 same implementation of FILL to initialize the array, even if a more
1871 efficient one was available (reported by Stas Boukarev, thanks to
1873 * bug fix: potential miscompilation of array stack allocation on x86 and
1874 x86-64. (reported by Time Tossavainen)
1875 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1876 result in their subforms being treated as top level forms. (reported by
1878 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1879 than a machine register could leave garbage in the high bits of the
1880 result register (bug 316325).
1881 * bug fix: disable address space randomization Linux/x86-64 as well,
1882 not just x86-64. (reported by Ken Olum)
1883 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1884 generate incorrect code.
1885 * bug fix: #201; type inference for CONS and ARRAY types could derive
1886 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1887 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1888 could not be assigned to or bound with PROGV. (reported by Lorenz
1890 * bug fix: the value of CL:- in the inspector was the previous expression
1891 evaluated rather than the expression being evaluated.
1892 * bug fix: constants can no longer be locally declared special.
1893 * bug fix: signals delivered to threads started from foreign land (read:
1894 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1895 thread by blocking all signals and resignalling.
1896 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1897 from :INITFORM, if any.
1899 changes in sbcl-1.0.28 relative to 1.0.27:
1900 * a number of bugs in cross-compilation have been fixed, with the ultimate
1901 result that building under (at least) clisp should be much more reliable.
1902 * minor incompatible changes: echo-streams now propagate unread-char to the
1903 underlying input stream, and no longer permit unreading more than one
1905 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1906 frames, allowing for instance more reliable backtraces.
1907 * improvement: the debugger REPL can now reference lexical variables
1908 by name directly for code compiled with (DEBUG 3).
1909 * improvement: errors from malformed declarations now have better source
1910 paths associated with them. (thanks to Tobias Rittweiler)
1911 * optimization: faster local calls on x86/x86-64
1912 * bug fix: some error messages for out-of-bound array indexes confused the
1913 index and the bound. (thanks to Stas Boukarev)
1914 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1916 * bug fix: running regressions tests in shells without OSTYPE set now works.
1917 (reported by Harald Hanche-Olsen)
1918 * bug fix: more robust static space exhaustion signalling from
1919 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1920 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1921 docstring away instead of storing it under names such as (LAMBDA (X)).
1922 (reported by Leslie Polzer)
1923 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1924 (thanks to Ole Arndt for the patch)
1925 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1926 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1927 potentially-invalid effective methods in its cache.
1928 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1929 instances as well (thanks to Paul Khuong)
1930 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1931 SB-POSIX:WAITPID and their C equivalents.
1932 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1934 changes in sbcl-1.0.27 relative to 1.0.26:
1935 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1936 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1937 * improvement: the system either recovers from stack exhaustion or dies
1938 properly as opposed to leaving the user uncertain of whether the handler
1939 trampled on some random memory next to the stack or having to rely on
1940 --lose-on-corruption (which is still a good idea to use in production
1941 because stack exhaustion can happen in signal handlers which will likely
1943 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1944 1.0.25.37, reported by Harald Hanche-Olsen)
1945 * bug fix: work around signal delivery bug in darwin (regression from
1946 1.0.25.44, reported by Sidney Markowitz)
1947 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1949 changes in sbcl-1.0.26 relative to 1.0.25:
1950 * incompatible change: an interruption (be it a function passed to
1951 INTERRUPT-THREAD or a timer function) runs in an environment where
1952 interrupts can be enabled. The interruption can use
1953 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1954 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1955 potentially running out of stack. Keep in mind that in the absence
1956 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1957 acquiring a lock can enable interrupts.
1958 * incompatible change: GC-OFF and GC-ON are removed, as they were
1959 always unsafe. Use WITHOUT-GCING instead.
1960 * new feature: runtime option --disable-ldb
1961 * new feature: runtime option --lose-on-corruption to die at the
1962 slightest hint of possibly non-recoverable errors: running out of
1963 memory, stack, alien stack, binding stack, encountering a memory
1964 fault, etc. In the absence of --lose-on-corruption a warning is
1966 * enhancement: detect binding stack exhaustion
1967 * enhancement: detect alien stack exhaustion on x86/x86-64
1968 * improvement: generally more stable and reliable interrupt handling
1969 * improvement: there is a per thread interruption queue,
1970 interruptions are executed in order of arrival
1971 * improvement: a repeating timer reschedules itself when the it has
1972 finished, but expiration times are spaced equally. If an
1973 expiration time is in the past it will trigger after a short grace
1974 period that may give a chance to other things to run.
1975 * optimization: slightly faster gc on multithreaded builds
1976 * optimization: faster WITHOUT-GCING
1977 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1978 important locks so that the debugger/handler doesn't produce
1979 recursive errors or deadlock.
1980 * bug fix: real-time signals are not used anymore, so no more
1981 hanging when the system wide real-time signal queue gets full.
1982 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1984 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1985 * bug fix: fix random memory faults related to interrupts on alpha
1986 * bug fix: fix random memory faults related to interrupts on sparc
1987 * bug fix: fix deadlocks related to starting threads
1988 * bug fix: fix deadlines on locks on futex platforms
1989 * bug fix: restore errno in signal handlers
1990 * bug fix: fix deadlocks related to hash tables
1991 * bug fix: fix deadlocks in pcl
1993 changes in sbcl-1.0.25 relative to 1.0.24:
1994 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1995 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1996 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1997 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1998 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1999 better name and does not return values so stale on multiprocessor systems.
2000 Also, HOLDING-MUTEX-P was added for about the only sane usage of
2002 * improvement: unithread builds keep track of MUTEX-VALUE.
2003 * improvement: reading from a TWO-WAY-STREAM does not touch the output
2004 stream anymore making it thread safe to have a concurrent reader and
2005 a writer, for instance, in a pipe.
2006 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
2007 arguments, making compiler-macros for SETF-functions able to inspect
2008 their constant arguments.
2009 * improvement: COMPILE-FILE reports times with millisecond accuracy
2010 (thanks to Luis Oliveira)
2011 * optimization: CHAR-CODE type derivation has been improved, making
2012 TYPEP elimination on subtypes of CHARACTER work better. (reported
2013 by Tobias Rittweiler, patch by Paul Khuong)
2014 * bug fix: setting alien structure fields of type struct by value now
2015 computes the right offset for the memory copy.
2016 * bug fix: compilation problem involving inlined calls to aliens with
2017 result type VOID. (reported by Ken Olum)
2018 * bug fix: #235a; sequential inline expasion in different policies no
2019 longer reuses the functional from the previous expansion site.
2020 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
2021 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
2022 * bug fix: named ENUMs in multiply-referenced alien record types no longer
2023 cause an implied type redefinition. Regression from 1.0.21.29.
2024 * bug fix: sign-extension of small signed return values now works with C
2025 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
2026 * improvements to the Windows port:
2027 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
2028 Westfold, thanks to Rudi Schlatte)
2030 changes in sbcl-1.0.24 relative to 1.0.23:
2031 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
2032 vector of a multidimensional SIMPLE-ARRAY.
2033 * new feature: the system now signals a continuable error if standard
2034 readtable modification is attempted. (thanks to Tobias Rittweiler)
2035 * new feature: DIRECTORY has been extended with a non-standard keyword
2036 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
2037 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
2038 has been robustified and documented better. (thanks to Robert Goldman)
2039 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
2040 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
2041 * tradeoff: constant FORMAT control strings are now compiled unless
2042 SPACE > SPEED (previously only when SPEED > SPACE.)
2043 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
2045 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
2047 * bug fix: lexical type declarations are now correctly reported by
2048 SB-CLTL2. (reported by Larry D'Anna)
2049 * bug fix: STRING-TO-OCTETS did not handle :START properly when
2050 using UTF-8 as external format. (thanks to Luis Oliveira)
2051 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
2052 are signalled correctly. (thanks to Stas Boukarev)
2053 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
2054 designator. (thanks to Tobias Rittweiler)
2055 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
2056 designator, and returns T instead of the function. (thanks to
2058 * bug fix: direct superclasses of STANDARD-CLASS and
2059 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
2060 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
2061 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
2062 when no class with the named slot yet exists no longer causes a
2063 compile-time style-warning.
2064 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
2065 in safe code. (reported by Didier Verna)
2066 * bug fix: #430; nested structure constructors can stack allocate.
2067 * bug fix: on some 64-bit platforms dynamic space size was truncated
2068 to #xffff0000 bytes. (reported by Benjamin Lambert)
2069 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
2070 REPL unusable. (reported by Daniel Herring)
2071 * bug fix: return values of READ-SEQUENCE did not take :START into
2072 account on file streams, regressions since 1.0.12.22. (reported by
2073 Thomas Russ, patch by Paul Khuong)
2074 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
2075 method specializer used to confuse permuation vector optimization.
2076 * bug fix: system inserted bogus implicit type declarations for local
2077 special variables in DEFMETHOD bodies.
2078 * bug fix: #354; duplicated frames in backtraces due to
2079 non-tail-call-optimized XEPs to functions with return type NIL
2081 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
2082 initializes structure object slots according to DEFSTRUCT initforms,
2083 and DEFSTRUCT forms :INCLUDEind structure classes defined using
2084 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
2085 (reported by Bruno Haible and Stephen Wilson)
2086 * bug fix: #395; fill-pointer output streams used now support
2087 element-type BASE-CHAR as well.
2088 * bug fix: compiler error when attempting to derive return value of
2089 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
2091 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
2093 * bug fix: Mac OS X binaries should now be portable between Leopard
2096 changes in sbcl-1.0.23 relative to 1.0.22:
2097 * enhancement: when disassembling method functions, disassembly
2098 for the associated fast function is also produced.
2099 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
2101 * optimization: printing with *PRINT-PRETTY* true is now more
2102 efficient as long as the object being printed doesn't require
2103 special handling by the pretty printer.
2104 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
2105 now interact correctly with type declarations.
2106 * partial bug fix: PCL detects infinite recursion during wrapper
2107 validation. (thanks to Attila Lendvai)
2108 * bug fix: #426; nested function calls are inlined properly.
2109 Previously if FOO was an inline function, in calls of the form
2110 (FOO (FOO ...)) the outer call was not inlined.
2111 * bug fix: long long arguments passed in registers to alien
2112 functions on PowerPC Linux and NetBSD are now handled correctly
2113 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
2115 changes in sbcl-1.0.22 relative to 1.0.21:
2116 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
2117 for the shared object in the current directory, but passes the native
2118 namestring of the designated pathname to the operation system's shared
2119 object loading function as-it.
2120 * minor incompatible change: --disable-debugger toplevel option now takes
2121 effect before processing of initialization files and --eval or --load
2123 * new feature: new commandline argument: --script, which supports
2124 shebang lines. See documentation for details. (based on work by
2126 * new feature: SAVE-LISP-AND-DIE can save current values of
2127 --dynamic-space-size and --control-stack-size in the executable core,
2128 causing it to skip normal runtime option processing. See documentation
2129 for details. (thanks to Zach Beane)
2130 * enhancement: inoccous calls to EVAL or generic functions dispatching
2131 on subclasses of eg. STREAM no longer cause compiler notes to appear.
2132 * enhancement: the system no longer resignals errors from --load and
2133 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
2134 associated with the original error to be lost. (thanks to Ariel
2136 * enhancement: :DONT-SAVE keyword argument has been added to
2137 LOAD-SHARED-OBJECT for controlling interaction with
2138 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
2139 the effects of an earlier LOAD-SHARED-OBJECT call.
2140 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
2141 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
2142 provided. (reported by Cedric St-Jean)
2143 * bug fix: circularity handling in the reader did not treat raw
2144 structure slots correctly. (reported by Cedric St-Jean)
2145 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
2146 file descriptors when there were none.
2147 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
2148 was broken. (reporteed by Willem Broekema)
2149 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
2150 pathnames without a directory.
2151 * bug fix: COMPILE-FILE did not warn about undefined variable
2152 references at toplevel, and LOAD of the resulting fasl did
2153 not signal an error.
2154 * bug fix: functions with non-required arguments used to end up with
2155 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
2156 * bug fix: redefining a function with non-required arguments didn't
2157 update the system's knowledge about its call signature properly.
2158 * bug fix: fixed #431; incompatible alien record type redefinitions
2159 are detected and handled. (reported by Neil Haven)
2160 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
2161 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
2163 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2164 after alien stack frames.
2165 * bug fix: strings passed to mk{s,d}temp lacked null termination
2167 changes in sbcl-1.0.21 relative to 1.0.20:
2168 * new feature: the compiler is able to track the effective type of a
2169 generic function across method addition and removal.
2170 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2171 appropriately typed structure slots without locking.
2172 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2173 information like those gathered by TIME using a programming-friendly
2175 * new feature: TIME reports time taken even if the form performs a
2176 non-local transfer of control.
2177 * enhancement: reduced conservativism on GENCGC platforms: on
2178 average 45% less pages pinned (measured from SBCL self build).
2179 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2180 mutate constant symbols or violate declaimed type of the symbol.
2181 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2182 sleeping on the semaphore in heavily contested semaphores.
2183 * bug fix: semaphores and condition variables were not interrupt
2185 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2186 owned by other threads anymore.
2187 * bug fix: FIND on lists called KEY outside the specified
2188 subsequence. (reported by budden)
2189 * bug fix: LOG doesn't use single-float intermediate results when
2190 given mixed integer and double-float arguments, leading to better
2191 precision. (reported by Bob Felts)
2192 * bug fix: LOG with base zero returned values of inconsistent type.
2194 changes in sbcl-1.0.20 relative to 1.0.19:
2195 * minor incompatible change: OPTIMIZE qualities
2196 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2197 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2198 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2199 * documentation: some slot access efficiency guidelines have been
2200 added to the user manual.
2201 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2202 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2203 as ASSOC and MEMEBER.
2204 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2205 to more efficient EQ-comparison versions more often.
2206 * optimization: enhanced derivation of DOLIST iteration variable type
2208 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2210 * optimization: runtime lookup of function definitions can be
2211 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2212 * optimization: compiler is able to derive the return type of
2213 (AREF (THE STRING X) Y) as being CHARACTER.
2214 * optimization: CLRHASH on empty hash-tables no longer does pointless
2215 work. (thanks to Alec Berryman)
2216 * optimization: REPLACE deftransforms don't punt when :START1 or
2218 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2219 no longer emits a code deletion note. (reported by Andrew
2221 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2222 functions with an odd number of &OPTIONAL arguments, a &REST
2223 argument, and one or more &KEY arguments at the call site.
2224 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2225 arguments appeared at call sites as well.
2226 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2227 READ-LINE &co can no longer read from them afterwards. (reported
2229 * bug fix: fixed #427: unused local aliens no longer cause compiler
2230 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2232 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2233 alien-stack leakage. (reported by Andy Hefner)
2234 * bug fix: PROGV signals an error when an attempt to violate declared
2235 type of a variable or bind a constant is made.
2236 * bug fix: SET signals an error when an attempt to violate declared
2237 type of a variable is made.
2238 * bug fix: restart computation during the execution of a restart
2239 test function no longer causes infinite recursion. (reported by
2241 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2242 signals an error. (thanks to Pierre Mai)
2243 * bug fix: EXPORT left symbol unexported in conflict situations.
2244 (thanks to Michael Weber)
2245 * bug fix: correctly handle name conflicts involving CL:NIL.
2246 (thanks to Michael Weber)
2247 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2248 conflicts arising from USEing package with conflicting symbols
2249 correctly. (thanks to Michael Weber)
2251 changes in sbcl-1.0.19 relative to 1.0.18:
2252 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2253 warnings that go otherwise unhandled will be muffled if they are
2254 of the type that's the value of this variable.
2255 * optimization: stack allocation is slightly more efficient on x86
2257 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2258 where a raw slot always is initialized using the initform whose
2259 type is not know sufficiently well a compile-time are now compiled
2260 correctly. (reported by John Morrison)
2261 * bug fix: compiler no longer makes erronous assumptions in the
2262 presence of non-foldable SATISFIES types.
2263 * bug fix: stack analysis missed cleanups of dynamic-extent
2264 arguments in non-let-converted calls to local functions.
2265 * improvements to the Windows port:
2266 ** adjusted address spaces for building on both Win32 and
2267 Win64. (thanks for John Connors)
2268 * fixed some bugs revealed by Paul Dietz' test suite:
2269 ** interval arithmetic during type derivation used inexact integer
2270 to single-float coercions.
2271 ** arithmetic operations involving large integers and single
2272 floats give the same results in compiled and interpreted code.
2273 ** deriving the result type of COERCE no longer signals an error
2274 if the derived type of the second argument is a MEMBER type
2275 containing invalid type specifiers.
2276 ** ADJOIN with constant NIL as second argument works correctly.
2277 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2279 changes in sbcl-1.0.18 relative to 1.0.17:
2280 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2281 profiles only the current thread.
2282 * minor incompatible change: changes to SYMBOL-VALUE of constants
2283 defined with DEFCONSTANT now signal an error.
2284 * enhancement: SB-SPROF now has support for wallclock profiling,
2285 and is also able to profile specific threads. REPORT output
2286 has also additional sorting options.
2287 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2289 * optimization: structure allocation has been improved
2290 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2291 ** out of line constructors are ~10% faster.
2292 ** inline constructors are ~15% faster.
2293 ** inline constructors are capable of dynamic extent allocation
2294 (generally on x86 and x86-64, in some cases on other platforms
2296 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2298 * optimization: file compiler is now able to coalesce non-circular
2299 lists, non-base strings, and bit-vectors. Additionally, constants
2300 are never referenced through SYMBOL-VALUE at runtime.
2301 * optimization: code defining methods on PRINT-OBJECT (and other
2302 generic functions in the COMMON-LISP package) now loads faster.
2303 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2305 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2306 fasl is now deleted. (reported by Attila Lendvai)
2307 * bug fix: READ-LINE always returned NIL for the last line in files.
2308 (reported by Yoshinori Tahara)
2309 * bug fix: more accurate disassembly annotations of foreign function
2310 calls. (thanks to Andy Hefner)
2311 * bug fix: trimming non-simple strings and non-string string
2312 designators when the there is nothing to trim works properly.
2313 (thanks to James Knight)
2314 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2315 (thanks to Travis Cross)
2316 * fixed some bugs revealed by Paul Dietz' test suite:
2317 ** NIL is a valid function name (regression at 1.0.13.38)
2318 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2319 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2320 fill pointers properly (regression at 1.0.12.23)
2321 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2322 displacement indices properly (regression at 1.0.12.23)
2324 changes in sbcl-1.0.17 relative to 1.0.16:
2325 * temporary regression: user code can no longer allocate closure
2326 variable storage on stack, due to bug 419 without explicitly
2327 requesting it. Please consult sbcl-devel for advice if you need to
2328 use this feature in the meanwhile.
2329 * new feature: runtime argument --control-stack-size can be used to
2330 adjust thread default control stack size.
2331 * enhancement: improved TIME output
2332 ** all times are reported using the measured accuracy (milliseconds
2333 for real and GC times, microseconds for everything else.)
2334 ** processor cycle counts on x86 and x86-64.
2335 ** interpreted forms are counted for both evaluator modes.
2336 ** number of lambdas converted by the compiler is reported.
2337 ** CPU percentage report (computed from real and total run time.)
2338 ** more comprehensive run time reporting, using a condenced format
2339 ** interperted form, lambda, and page fault counts are omitted
2341 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2343 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2344 * optimization: two argument forms of LAST are upto ~10% faster
2345 in normal SPEED policies.
2346 * optimization: NCONC no longer needs to heap cons its &REST list
2347 in normal SPEED policies.
2348 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2349 to Sidney Markowitz)
2350 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2351 regression since 1.0.9.1. (thanks to Eric Marsden)
2352 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2353 since 1.0.15.36. (thanks to Paul Khuong)
2354 * bug fix: LAST when always returned the whole list when given a bignum
2355 as the second argument.
2356 * bug fix: dynamic extent allocation of nested lists and vectors
2357 could leak to otherwise accessible parts.
2358 * bug fix: invalid optimization of heap-allocated alien variable
2360 * bug fix: fasl header checking is less vulnerable to different
2361 platform word lengths.
2362 * bug fix: more correct assembler syntax for GNU binutils
2363 2.18.50.0.4 support. (thanks to Marijn Schouten)
2364 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2366 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2367 declarations) successfully. (reported by Attila Lendvai)
2369 changes in sbcl-1.0.16 relative to 1.0.15:
2370 * minor incompatible change: revert the changes to sb-posix's error
2371 signaling added in 1.0.14.
2372 * minor incompatible change: change PROBE-FILE back to returning
2373 NIL whenever we can't get a truename, as was the case before 1.0.14.
2374 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2375 inherits from ERROR instead of just CONDITION.
2376 * new feature: SB-INTROSPECT can provide source locations for instances
2377 as well. (thanks to Tobias Rittweiler)
2378 * optimization: binding special variables now generates smaller code
2379 on threaded platforms.
2380 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2381 and cases where no :TEST is given but the compiler can infer that
2382 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2383 * optimization: better LOGNOT on fixnums.
2384 * optimization: modular arithmetic for a particular requested width
2385 is implemented using a tagged representation unless a better
2386 representation is available.
2387 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2388 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2389 for wellformedness and returns a specialized vector. (reported by
2390 Francois-Rene Rideau)
2391 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2392 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2393 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2394 unscheduling timer at the same time as another timer fires.
2395 * bug fix: don't reschedule timers for dead threads.
2396 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2397 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2398 bogus errors if select() was interrupted.
2399 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2401 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2402 * enhancement: cleaner backtraces for interactive interrupts, as
2403 well as other cases where the interesting frames used to be
2404 obscured by interrupt handling frames.
2405 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2406 now supported, and tracing a whole package using (TRACE "FOO") now
2407 traces SETF-functions as well.
2408 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2409 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2410 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2411 * unreadably printed representation of hash-tables now includes
2413 * bug fix: partially fixed #188: type propagation from assignments
2414 is now more efficient.
2415 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
2416 'DOUBLE-FLOAT) are not flushable.
2417 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
2418 full address of the object, and none of the tag bits.
2419 * bug fix: readably printing hash-tables now respects other printer
2420 control variables. (reported by Cedric St-Jean)
2421 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
2422 keyword with MAKE-HASH-TABLE.
2423 * bug fix: export SB-POSIX:MKSTEMP.
2424 * bug fix: SORT was not interrupt safe.
2425 * bug fix: XREF accounts for the last node of each basic-block as
2427 * bug fix: MAKE-INSTANCE optimizations interacted badly with
2428 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
2429 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2430 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2431 create obsolete instances in the case of redefinition or
2432 obsoletion of a superclass. (thanks to Andy Hefner)
2433 * bug fix: Support for the Alpha architecture has been revived; it had
2434 suffered somewhat from lack of maintenance since sbcl-1.0.
2435 * improvements to the Windows port:
2436 ** The system detects the codepage to use at startup, instead of
2437 using the value from the saved core. (thanks to Kei Suzuki)
2439 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2440 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2441 (see documentation for details.)
2442 * revived support for OpenBSD (contributed by Josh Elsasser)
2443 * partially fixed bug #108: ROOM no longer suffers from occasional
2444 (AVER (SAP= CURRENT END)) failures.
2445 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2446 bodies no longer cause a WARNING to be signalled. (reported by
2448 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2449 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2450 the bug in TRUNCATE.) (reported by Michael Weber)
2451 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2452 no samples. (reported by Andy Hefner)
2453 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2454 no longer appear as (NIL ...) frames in backtraces.
2455 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2456 is now actually exported from SB-EXT as documented. (reported by
2458 * bug fix: sb-aclrepl now correctly understands how to inspect
2459 single-floats on 64-bit platforms where single-floats are not boxed.
2460 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2461 yet been finalized. (reported by Levente Meszaros)
2462 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2463 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2464 SBCL-specific optimize qualities.
2466 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2467 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2468 an executable in the search path, and does so in the child
2469 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2470 been removed; it can be found in the CVS history, for somebody who
2471 needs that search behavior (see the manual).
2472 * minor incompatible change: compiler policy re. weakening type
2473 checks has changed: now type checks are weakened only if SAFETY < 2
2475 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2476 unparsing of directory pathnames as files. Analogously,
2477 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2478 filename to parse into a directory pathname.
2479 * enhancement: implicit generic function creation now signals a
2480 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2481 users can bind handlers for and muffle around calls to LOAD.
2482 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2483 to be used (using the default stream external format), and allows
2484 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2485 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2486 strings and vectors whose element-type or simplicity is not fully
2487 known at compile-time.
2488 * optimization: STRING-TRIM and related functions no longer allocate
2489 a new string when no trimming needs to be performed. These functions
2490 are also faster than before when the input string has been declared
2492 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2493 * optimization: READ-LINE is significantly faster for files containing
2495 * optimization: non-open coded uses of character comparison operators
2496 (e.g. char=) no longer cons when called with more than one parameter
2497 on platforms supporting dynamic-extent allocation.
2498 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2499 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2500 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2502 * bug fix: some sequence functions elided bounds checking when
2504 * bug fix: too liberal weakening of union-type checks when SPEED >
2506 * bug fix: more bogus fixnum declarations in ROOM implementation
2509 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2510 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2511 :SYNCHRONIZED argument, which makes the hash-table safe for
2512 concurrent accesses (but not iteration.) See also:
2513 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2514 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2515 * optimization: CONCATENATE on strings is an order of magnitude faster
2516 in code compiled with (> SPEED SPACE).
2517 * optimization: SUBSEQ is ~50% faster on lists.
2518 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2519 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2520 END is smaller then START.
2521 * bug fix: SB-PROFILE will no longer report extra consing for nested
2522 calls to profiled functions.
2523 * bug fix: ROOM implementation had bogus fixnum declarations which
2524 could cause type-errors when calling ROOM on large images.
2525 * bug fix: if file compilation is aborted, the partial fasl is now
2526 deleted, and COMPILE-FILE returns NIL as the primary value.
2527 * bug fix: number of thread safety issues relating to SBCL's internal
2528 hash-table usage have been fixed.
2529 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2530 be returned from its body when the values were being returned
2531 using unknown-values return convection and the W-P-O was wrapped
2532 inside an UNWIND-PROTECT.
2533 * bug fix: sb-posix should now compile again under Windows, enabling
2534 slime to work again.
2536 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2537 * incompatible change: hash-table accessor functions are no longer
2538 automatically protected by locks. Concurrent accesses on the same hash-table
2539 from multiple threads can give inconsistent results or even corrupt the
2540 hash-table completely. Multi-threaded applications should do their own
2541 locking at the correct granularity. In the current implementation it is
2542 still safe to have multiple readers access the same table, but it's not
2543 guaranteed that this property will be maintained in future releases.
2544 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2545 and will signal an error at runtime.
2546 * enhancement: SB-THREAD package now exports a semaphore interface.
2547 * enhancement: CONS can now stack-allocate on x86 and
2548 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2550 * enhancement: nested lists can now be stack allocated on
2551 platforms providing stack allocation support.
2552 * enhancement: dynamic-extent support has been extended to support
2553 cases where there are multiple possible sources for the stack
2555 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2556 if the mutex is uncontested on Linux.
2557 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2558 as specified by the CLHS. (thanks to Tobias Rittweiler)
2559 * bug fix: NaN comparison now works on x86-64.
2560 * bug fix: CLOSE :ABORT T on a stream with pending output now
2562 * bug fix: instances of non-standard metaclasses using standard
2563 instance structure protocol sometimes missed the slot type checks
2565 * bug fix: known functions can be inlined in high-debug code.
2567 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2568 * minor incompatible change: the MSI installer on Windows no longer
2569 associates .lisp and .fasl files with the installed SBCL.
2570 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2571 on Windows. (thanks to Luis Oliviera)
2572 * new feature: SB-CLTL2 contrib module now implements
2573 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2574 * optimization: scavenging weak pointers is now more efficient,
2575 requiring O(1) instead of O(N) per weak pointer to identify
2576 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2577 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2578 method bodies using constant slot-names when the first argument is
2579 a specializer parameter for the method.
2580 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2581 names, when the class of the instance is a direct instance
2582 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2583 as slow as the constant slot-name case.)
2584 * optimization: member type construction is now O(N) instead
2586 * optimization: UNION and NUNION are now O(N+M) for large
2587 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2589 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2590 now more readable in environments like Slime which display it.
2591 (thanks to Tobias C. Rittweiler)
2592 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2593 was able to infer the correct argument type for the object on which
2594 the CAS operation was being performed.
2595 * bug fix: copy propagation interfered with parallel assignment
2596 semantics in local calls. (reported by Paul Khuong)
2597 * bug fix: the signed modular fixnum shift compiled to wrong code on
2598 x86 and x86-64. (spotted by a slight modification to some of
2601 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2602 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2603 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2604 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2606 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2607 and generic function now print the object identity for anonymous
2608 instances. (thanks to Attila Lendvai)
2609 * enhancement: as an extension to MOP, SBCL now supports SETF of
2610 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2611 (thanks to Attila Lendvai)
2612 * enhancement: sb-cover has an alternate annotation mode which puts
2613 the form annotations at the car of the form, instead of annotating
2614 it completely. The benefit of this mode is that it shows better
2615 which forms were instrumented by the compiler.
2616 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2617 by printer control variables. (reported by Dan Corkill)
2618 * bug fix: system leaked memory when delayed output was performed by
2619 the OS in smaller chunks then expected. (thanks to David Smith)
2620 * bug fix: system leaked memory when file streams were not closed
2622 * bug fix: large objects written to slow streams that were modified
2623 after the write could end up with the modified state written to
2624 the underlying file descriptor.
2625 * bug fix: multiple threads operating in parallel on the same stream
2626 could cause buffer-overflows.
2627 * bug fix: source location information is stored correctly
2628 (broken since 1.0.6). This bug would generally show up as the
2629 Slime debugger highlighting the wrong form when the sldb-show-source
2631 * bug fix: Branch forms are again annotated as branches in the sb-cover
2633 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2634 on x86-64. (reported by Gregory Vanuxem)
2635 * bug fix: EQUALP could return wrong results for structures with raw
2636 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2637 word). (reported by Vjacheslav Fyodorov)
2638 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2641 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2642 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2643 atomic compare-and-swap operations on threaded platforms.
2644 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2645 allows assigning a global minimum value to optimization qualities
2646 (overriding proclamations and declarations).
2647 * enhancement: closed over variables can be stack-allocated on x86
2649 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2651 * optimization: slot definition lookup is now O(1). This speeds up
2652 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2653 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2654 * optimization: ASSOC and MEMBER can now be open-coded for all
2655 combinations of keyword arguments when second argument is constant
2656 and SPEED >= SPACE. In other cases a specialized version is
2658 * bug fix: using obsoleted structure instances with TYPEP and
2659 generic functions now signals a sensible error.
2660 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2661 (reported by Kristoffer Kvello)
2662 * bug fix: backtrace construction is now more careful when making
2663 lisp-objects from pointers on the stack, to avoid creating bogus
2664 objects that can be seen by the GC.
2665 * bug fix: defaulting of values in contexts expecting more than 7
2666 variables now works on x86-64. (reported by Christopher Laux)
2667 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2669 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2670 as the property-list of a symbol.
2671 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2672 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2673 situations requested, are once again file-compileable. (reported
2676 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2677 * MOP improvement: support for user-defined subclasses of
2678 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2679 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2680 the expansion of DEFMETHOD, is responsible for generating a form
2681 which creates a list of specializers when evaluated. Additional
2682 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2683 debugging and introspective support.
2684 * minor incompatible change: the (unsupported) spinlock interface
2685 has changed: free spinlock now has the value NIL, and a held spinlock
2686 has the owning thread as its value.
2687 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2688 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2690 * enhancement: name of a socket-stream is now "a socket" instead of
2691 "a constant string".
2692 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2693 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2694 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2695 for generic functions. (Thanks to Tobias C. Rittweiler)
2696 * optimization: bignum printing speed has been improved by 20-40%
2697 (depending on the bignum size.)
2698 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2700 * bug fix: the cache used by the CLOS to store precomputed effective
2701 methods, slot offsets, and constant return values is now thread and
2703 * bug fix: generic function dispatch function updating is now thread
2704 and interrupt safe (in the sense that the known issues have been
2706 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2707 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2708 * bug fix: asdf systems with dependencies to the SB-POSIX or
2709 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2710 * bug fix: interrupt safety of applicable method computation has been
2713 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2714 * new contrib: sb-cover, an experimental code coverage tool, is included
2715 as a contrib module.
2716 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2717 significantly faster.
2718 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2719 produce more efficient code on x86-64 if the compiler can determine
2720 that (+ INDEX <constant>) does not require a bounds check and FOO
2721 has an element type at least 8 bits wide.
2722 * enhancement: a new, experimental synchronous timeout facility is
2723 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2724 * enhancement: when a symbol name conflict error arises, the
2725 conflicting symbols are always printed with a package prefix.
2726 (thanks to Kevin Reid)
2727 * enhancement: stepping is now once again supported on the SPARC and
2728 MIPS platforms. (It is also now more likely to work on CheneyGC
2730 * enhancement: sb-sprof can now also track and report accurate call
2732 * bug fixes: the treatment of non-standard subclasses of
2733 SB-MOP:SPECIALIZER is more correct.
2734 * incompatible change: PURIFY no longer copies the data from the
2735 dynamic space into the static and read-only spaces on platforms
2736 that use the generational garbage collector
2737 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2739 * bug fix: GC race condition occasionally resulting in crashes with
2740 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2742 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2744 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2745 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2746 * bug fix: an asynchronous interrupt could previously leave the
2747 system running with GC inhibited.
2748 * bug fix: a DECLARE form evaluated at top-level now causes an error
2749 rather than silently (or verbosely) returning NIL.
2750 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2751 result in a error being signalled due to source form lookup errors.
2752 (reported by Peter Graves)
2754 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2755 * incompatible change: removed writer methods for host-ent-name,
2756 host-ent-addresses -- changing the values did not update the DNS
2758 * minor incompatible change: changed experimental JOIN-THREAD interface
2759 * documentation: the manual now lists reader and writer methods
2760 in class slot documentation sections. (thanks to Richard M Kreuter)
2761 * documentation: unwinding from asyncronous events has been
2762 documented as unsafe.
2763 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2764 in multithreaded application code.
2765 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2766 platforms. (thanks to James Anderson for the optimization hint)
2767 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2769 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2770 variants no longer cons.
2771 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2772 their NOT- variants no longer cons.
2773 * optimization: EQUAL hash tables no longer use SXHASH for objects
2774 of all data types, but instead use an EQL hash for types for which
2775 EQUAL is the same as EQL.
2776 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2777 are significantly faster.
2778 * optimization: new STRING-OUTPUT-STREAM implementation is much
2779 faster for large outputs and conses 30% less on average.
2780 * enhancement: XREF information is now collected for references made
2781 to global variables using SYMBOL-VALUE and a constant argument.
2782 * enhancement: SIGINT now causes a specific condition
2783 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2784 * bug fix: FILE-POSITION used to signal an error in some cases where
2785 ANSI requires it to return NIL.
2786 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2787 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2788 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2790 * bug fix: bad type declaration in the CLOS implementation has
2791 been fixed. (reported by James Anderson)
2792 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2793 (thanks to Lutz Euler)
2794 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2795 required by the CLHS. (reported by Samium Gromoff)
2796 * bug fix: dead unbound variable references now signal an error.
2797 (reported by Marco Monteiro)
2798 * bug fix: / with an unused value was being deleted in safe code.
2799 (thanks to Marco Monteiro and Kevin Reid)
2800 * bug fix: number of characters that can be written onto a single
2801 line in a file is unlimited.
2802 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2803 been fixed by inhibiting interrupts for when GC is disabled.
2804 * bug fix: some interrupt safety issues with GETHASH, (SETF
2805 GETHASH), CLRHASH and REMHASH have been fixed.
2806 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2807 specifier no longer causes infinite recursion.
2808 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2809 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2810 * bug fix: an &environment argument with the correct variable information
2811 is passed to macros that are expanded during byte compilation.
2812 (reported by Samium Gromoff)
2813 * bug fix: a logic error was causing the hash function for bignums to
2814 have excessive amounts of collisions. (reported by Faré Rideau)
2815 * bug fix: modifying the contents of an array could change the return
2816 value of SXHASH on that array, which is only allowed for strings
2817 and bit vectors. (bug introduced in 0.9.16)
2818 * improvement: the x86-64/darwin port now passes all tests (except
2819 for the debugger tests) but should still be considered
2820 experimental until this is fixed.
2821 * improvement: a style-warning is signaled for CASE (etc) clauses with
2822 duplicate keys. (thanks to Kevin Reid)
2823 * improvement: macos/x86 and macos/x86-64 now use mach exception
2824 handlers for dealing with illegal instructions (for trapping and
2825 error handling) and memory protection violations (for GC).
2827 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2828 * new platform: experimental support for x86-64/darwin (MacOS).
2829 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2830 and getnameinfo sockets functions are used instead of gethostbyaddr
2831 and gethostbyname, on platforms where the newer functions are available.
2832 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2834 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2835 don't print the startup banner, but behave as if --noinform was passed
2836 as a command line argument. (thanks to Kevin Reid)
2837 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2838 * optimization: code using alien values with undeclared types is much faster.
2839 * optimization: the compiler is now able to open code SEARCH in more cases.
2840 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2841 * bug fix: using standardized COMMON-LISP special variables as loop
2842 variables no longer signals bogus package lock violations. (reported
2844 * bug fix: declaring local loop variables to be of a range-limited type
2845 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2846 (reported by Andras Simon)
2847 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2848 bugs remain on x86-64.)
2849 * bug fix: the #= and ## reader macros now interact reasonably with
2850 funcallable instances.
2851 * bug fix: type-checks for function arguments were compiled using the
2852 compiler policy settings of the wrong lexical environment (in 1.0.2
2854 * bug fix: SHADOW accepts characters as string designators, as required
2855 by the spec (thanks to Eric Marsden)
2856 * bug fix: fixed GC safety issues when foreign functions are called with
2857 non-base strings as arguments
2858 * bug fix: more consistent error output for fatal-compiler-warnings, like
2860 * bug fix: functions with proper names were showing up as NIL in
2861 backtraces (reported by Edi Weitz, regression in 1.0.2)
2863 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2864 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2865 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2866 produce more efficient code on the x86 if the compiler can determine
2867 that (+ INDEX <constant>) does not require a bounds check and FOO
2868 has an element type at least 8 bits wide.
2869 * bug fix: references to undefined variables are handled the same way
2870 in toplevel forms as in the normal compiler
2871 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2873 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2874 (thanks to Jon Buller)
2875 * improvement: faster compilation times for complex functions
2876 * improvement: added readlink support to SB-POSIX (thanks to Richard
2879 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2880 * improvement: experimental support for mach exception handling on
2881 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2883 * improvement: support for GBK external format.
2884 (thanks to Chun Tian (binghe))
2885 * improvement: the debugger now displays variables that have been closed
2886 over, in code compiled with (DEBUG 2) or higher
2887 * improvement: support for executable cores on NetBSD (thanks to
2889 * new feature: added a RESTART-FRAME debugger command
2890 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2891 be used to provide an implementation for FILE-POSITION on Gray streams
2892 (thanks to Eric Marsden)
2893 * new feature: add syslog, openlog and closelog support to SB-POSIX
2894 (thanks to Richard Kreuter)
2895 * optimization: the function call overhead in code compiled with
2896 a high DEBUG optimization setting is significantly
2897 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2898 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2899 (thanks to Tony Martinez)
2900 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2901 evaluated once (reported by Kevin Reid)
2902 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2903 works again (thanks to Kilian Sprotte)
2904 * bug fix: an error is signaled for tagbodies with duplicate tags
2905 (thanks to Stephen Wilson)
2906 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2907 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2908 stack frames from alien callbacks.
2909 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2910 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2911 65k pages (thanks to David Woodhouse)
2912 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2914 changes in sbcl-1.0.1 relative to sbcl-1.0:
2915 * new platform: FreeBSD/x86-64, including support for threading.
2916 * new feature: the compiler stores cross-referencing information
2917 about function calls (who-calls), macroexpansion (who-macroexpands)
2918 and special variables (who-binds, who-sets, who-references) for code
2919 compiled with (< SPACE 3). This information is available through the
2920 sb-introspect contrib.
2921 * new feature: users may subclass SEQUENCE, and have instances of
2922 these classes interoperate with standard Common Lisp functions if
2923 a number of methods are defined. (This feature is experimental
2924 and the interface subject to change based on feedback from SBCL
2925 users and the general community)
2926 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2927 x86/x86-64, rather than the previous fixed depth of 8
2928 * improvement: another pthread back-end of mutex "pthread-futex".
2929 * bug fix: non-ascii command-line arguments are processed correctly
2930 (thanks to Yaroslav Kavenchuk)
2931 * bug fix: non-required arguments were not passed correctly when a method
2932 defined using DEFMETHOD was called from a mop-generated method using
2933 CALL-NEXT-METHOD (reported by Pascal Costanza)
2934 * bug fix: recursion is now permitted in accessors through
2935 SLOT-UNBOUND. (reported by Pascal Costanza)
2936 * bug fix: an error was signaled at startup if the HOME environment
2937 variable was defined, but had an empty value (reported by Peter Van Eynde)
2938 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2939 signal a PROGRAM-ERROR, not a BUG.
2940 * bug fix: SB-POSIX:READDIR works when built with large file support.
2941 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2943 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2944 for better automatic indentation support. (thanks to Matt Pillsbury)
2945 * optimization: loading generic functions no longer takes O(n^2) time,
2946 proportional to the amount of methods in the generic function
2947 (reported by Todd Sabin and Jeremy Brown)
2948 * optimization: the FIND and POSITION family of sequence functions
2949 are significantly faster on arrays whose element types have been
2951 * improvements to the Windows port:
2952 ** Intermittent heap corruption problems have been fixed. (thanks
2953 to Alastair Bridgewater)
2954 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2956 ** Lisp is able to unwind foreign exception frames from alien
2957 callbacks. (thanks to Alastair Bridgewater)
2959 changes in sbcl-1.0 relative to sbcl-0.9.18:
2960 * improvement: experimental support for threading on FreeBSD/x86.
2961 (thanks to NIIMI Satoshi)
2962 * improvement: runtime option --dynamic-space-size can be used
2963 to set the size of the dynamic space reserved on startup.
2964 * improvement: floating point modes in effect are now saved in
2965 core, and restored on startup.
2966 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2967 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2968 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2969 threads are not running after *SAVE-HOOKS* have run.
2970 * improvement: writes to CLOS instance slots are type-checked in code
2971 compiled with (SAFETY 3)
2972 * improvement: floating-point exception handling on FreeBSD (thanks to
2974 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2975 (thanks to Zach Beane)
2976 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2978 * improvement: added support for the Shift-JIS external format.
2979 (contributed by NIIMI Satoshi)
2980 * improvement: callbacks are supported on Linux/PPC. (thanks to
2982 * bug fix: compiler bug triggered by a (non-standard) VALUES
2983 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2984 * bug fix: file compiler no longer confuses validated and already
2985 dumped structurres. (reported by Kaersten Poeck)
2986 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2987 fill-pointer signals a type-error as required. (thanks to
2989 * bug fix: disassemly of funcallable instances works.
2990 * bug fix: single stepping on PPC.
2991 * bug fix: fix thread-safety problems in the type system (generally
2992 manifesting as nonsensical errors like "STRING is a bad type specifier
2993 for sequences" or "The value 1 is not of type FIXNUM")
2994 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2995 (reported by Josip Gracin)
2996 * bug fix: an error is signaled for attempts to displace arrays with
2997 incompatible element types (thanks to Mario Mommer)
2998 * bug fix: more correct handling of wide characters in debug info
2999 (bug reported by Attila Lendvai and fixed by Juho Snellman)
3000 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
3001 and don't cause extra consing
3002 * optimization: MAP and MAP-INTO are significantly faster on vectors
3003 whose elements types have been declared.
3004 * Improvements to SB-SPROF:
3005 ** Support for allocation profiling
3006 ** Reduced profiling overhead, especially for long profiling runs
3007 * Improvements to the Windows port:
3008 ** floating point exceptions are now reported correctly.
3009 ** stack exhaustion detection works partially.
3010 ** more accurate GET-INTERNAL-REAL-TIME.
3011 ** better RUN-PROGRAM behaviour in case of errors in the child
3013 ** PROBE-FILE now simplifies pathnames correctly.
3014 ** DIRECTORY now works correctly with :WILD-INFERIORS.
3015 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
3016 1st 1970 (although time timezone data will be unreliable).
3017 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
3019 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
3020 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
3021 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
3023 * bug fix: two potential GC deadlocks affecting threaded builds.
3024 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
3025 returns T (reported by Anton Kazennikov)
3026 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
3027 with non-variable places
3028 * bug fix: remove a race condition in the setting of
3029 funcallable-instance functions, this should make threaded CLOS
3030 code more stable against memory faults.
3031 * bug fix: corruption of specials when unbinding is interrupted by an
3032 asynchronous unwind (reported by Hannu Koivisto)
3033 * improvement: the debugger will now also display local variables that
3034 are only used once, for code compiled with a DEBUG optimization quality
3037 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
3038 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
3039 * incompatible change: External-format support for FFI calls. The
3040 SB-ALIEN:C-STRING no longer implies an ASCII
3041 external-format. Instead the string is subject to external-format
3042 conversion. Additionally return values of type SB-ALIEN:C-STRING
3043 are by default of type (SIMPLE-ARRAY CHARACTER), not
3044 SIMPLE-BASE-STRING. For an alien type that behaves like the old
3045 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
3046 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
3047 * incompatible change: SB-EXT package no longer contains the
3048 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
3049 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
3051 * incompatible change: the single-stepper is no longer available
3052 on Alpha, Mips and Sparc platforms.
3053 * minor incompatible change: the direct superclasses of
3054 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
3055 not (STANDARD-OBJECT FUNCTION). This makes the
3056 class-precedence-lists of GENERIC-FUNCTION and
3057 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
3059 * minor incompatible change: the default stream external format on
3060 non-unicode SBCL is no longer detected from the locale, but is always
3062 * new feature: Add a version of evaluator that uses an interpreter instead
3063 of the compiler. EVAL still uses the compiler by default, to switch it
3064 to use the interpreter, set the value of the variable
3065 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
3066 * minor incompatible change: the single-stepper REPL has been merged
3067 with the normal debugger (see the "Stepping" heading of the debugger help
3068 for more details). The debugger command STEP will no longer switch
3069 to the single-stepper REPL.
3070 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
3071 for a type now works.
3072 * bug fix: loading of default sysinit file works. (thanks to Leonid
3074 * bug fix: better detection of circularities in the file-compiler.
3075 (reported by Marco Monteiro)
3076 * bug fix: the CL pathname functions now work with files that have
3077 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
3078 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
3079 systems with Unix98 pty semantics.
3080 * bug fix: ASDF-INSTALL will now work with bsd tar.
3081 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
3083 * bug fix: timers expiring in dead threads no longer cause a
3084 type-error (reported by Paul "Nonny Mouse").
3085 * bug fix: thanks to more lightweight single-stepper instrumentation,
3086 code compiled with (DEBUG 3) will compile and execute significantly faster,
3087 and will have more accurate type-inferencing than before
3088 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
3089 whose bindings are modified
3090 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
3091 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
3092 ** replace dummy implementations of CL:MACHINE-INSTANCE and
3093 CL:SOFTWARE-VERSION with proper version
3095 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
3096 * feature: implemented the READER-METHOD-CLASS and
3097 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
3098 as specified by AMOP.
3099 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
3101 * optimization: faster LOGCOUNT implementation on x86 and x86-64
3102 (thanks to Lutz Euler)
3103 * optimization: hashing of general arrays and vectors has been
3104 improved. (reported by Any Fingerhut)
3105 * enhancement: SB-INTROSPECT is now able to find definitions of
3106 profiled functions. (thanks to Troels Henriksen)
3107 * enhancement: compiler-macro expansion applies now to FUNCALL forms
3108 as well, allowing compiler-macros for SETF-functions to expand.
3109 * enhancement: step-instrumentation no longer wraps known
3110 single-value functions with multiple-value context, allowing
3111 better type inference.
3112 * fixed bug #337: use of MAKE-METHOD in method combination now works
3113 even in the presence of user-defined method classes. (reported by
3114 Bruno Haible and Pascal Costanza)
3115 * fixed bug #339(c): if there are applicable methods not part of any
3116 long-form method-combination group, call INVALID-METHOD-ERROR.
3117 (reported by Bruno Haible)
3118 * fixed bug #361: the :FUNCTION initarg in the protocol for
3119 initialization of methods can now be used to override
3120 internally-produced optimized functions. (reported by Bruno
3122 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
3123 system-provided lambda expression no longer cause warnings about
3124 unbound #:|pv-table| symbols.
3125 * bug fix: improved the handling of type declarations and the
3126 detection of violations for keyword arguments with non-constant
3128 * bug fix: potentially erronous calls to PATHNAME and
3129 MERGE-PATHNAMES were being flushed in some cases.
3130 (reported by Richard Kreuter)
3131 * bug fix: compiled calls to TYPEP were mishandling obsolete
3132 instances. (reported by James Bielman and Attila Lendvai)
3133 * bug fix: format strings with ~> without matching ~< no longer
3134 trigger an AVER, but signal an understandable error instead.
3135 (reported by Antonio Martinez)
3136 * bug fix: specifying an output-file without a pathname-type for
3137 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
3138 of input-file instead of "fasl". (reported by Robert Dodier)
3139 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
3140 (reported by James Y Knight).
3141 * bug fix: compiler-macros-function did not consider the environment
3142 argument for shadowing by local functions.
3143 * bug fix: compiler-macros expansion was inhibited by local INLINE
3145 * bug fix: inline expansions of known functions were subject to
3146 step-instrumentation in high debug policies, leading to problems
3147 with type-inference.
3148 * bug fix: compiler failed to differentiate between different CONS
3149 types in some cases.
3150 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
3151 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
3152 * bug fix: #368: incorrect use of expressed vs. upgraded array
3154 * bug fix: #306a: more precise unions of array types.
3155 * thread-safety improvements:
3156 ** CONDITION-WAIT could return early on Linux, if the thread was
3157 interrupted and subsequently continued with SIGCONT.
3158 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
3160 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
3161 * added support for the ucs-2 external format. (contributed by Ivan
3163 * minor incompatible change: pretty printing of objects of type
3164 (cons symbol) is, in the default pprint-dispatch-table, now
3165 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3167 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3168 called later in a class's lifetime, possibly as late as when the
3169 first instance of the class is created. Previously,
3170 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3171 class became finalizeable.
3172 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3173 for multibyte external-format streams. (thanks to "vbzoli")
3174 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3175 with :ALLOCATION :CLASS inherited from superclasses of the
3177 * fixed bug: anonymous classes can now be created using the :NAME
3178 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3179 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3180 * fixed bug: core-files saved with :EXECUTABLE T can again be
3181 executed when SBCL_HOME isn't set. (reported by James Knight)
3182 * fixed bug: toplevel LOCALLY forms with declarations could
3183 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3184 * fixed bug: printing from several different threads using different
3185 values of *print-case* could cause invalid output, due to
3186 some internal special variables of the printer not being bound
3187 thread-locally (reported by Max Mikhanosha)
3188 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3189 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3190 (reported by Pascal Costanza)
3191 * fixed bug: FINALIZE-INHERITANCE is called from
3192 REINITIALIZE-INSTANCE on classes when the class has previously
3193 been finalized, as required by AMOP.
3194 * minor code generation optimizations:
3195 ** better register allocation in CLOS dispatching functions
3196 ** overflow detection when coercing signed bytes to fixnums on x86-64
3197 ** is now implemented with one IMUL instruction instead of three shifts
3198 ** more efficient bit-vector access on x86 and x86-64
3199 ** more efficient access to raw structure slots on x86 and x86-64
3200 * fixed some bugs revealed by Paul Dietz' test suite:
3201 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3202 return its argument.
3204 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3205 * feature: thread support on Solaris/x86, and experimental thread support
3207 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3209 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3210 default method for SLOT-UNBOUND.
3211 * minor incompatible change: prevent the user from specializing the
3212 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3213 somewhat counter to the intent of the protocol, I (CSR) think, and
3214 additionally it just doesn't work in SBCL as currently
3215 implemented, thanks to optimizations (that are always valid for
3216 the other three SLOT-VALUEish functions, but not for the setter).
3217 * minor incompatible change: the :SB-LDB feature is now enabled by
3218 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3219 the low-level debugger.
3220 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3221 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3222 down to an SB-SYS:FD-STREAM, allowing direct communication in
3223 more cases. Temporary files and pipes are still used as a fallback
3225 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3226 on the non-reentrant C functions localtime(3) and gmtime(3).
3227 * bug fix: global optimization policy was not visible in LOCALLY and
3229 * bug fix: class objects can be used as specializers in methods.
3230 (reported by Pascal Costanza)
3231 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3232 with a type error. (reported by blitz_ on #lisp)
3233 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3234 failed with a type error. (reported by Pascal Bourguignon)
3235 * bug fix: merging pathnames against defaults with :DIRECTORY
3236 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3237 (reported by James Y Knight)
3238 * bug fix: saving large (>2GB) cores on x86-64 now works
3239 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3240 constant index and a (simple-array (signed-byte 32)) array
3241 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3242 error (patch by Robert J. Macomber)
3243 * feature: TIME now displays the amount of run-time spent in GC
3244 * bug fix: The debugger now does a better job of respecting
3245 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3246 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3247 workaround for bug 403.)
3248 * bug fix: floating point exception handling now works on FreeBSD
3249 (thanks to NIIMI Satoshi)
3250 * fixed some bugs revealed by Paul Dietz' test suite:
3251 ** MISC.641: LET-conversion were not supposed to work in late
3253 * improvements to the Win32/x86 port:
3254 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3255 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3257 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3258 * new feature: source path information is generated for macro-expansion
3259 errors for use in IDE's like Slime (thanks to Helmut Eller)
3260 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3261 * bug fix: compiler does not loop forever on an invalid type in
3263 * improvement: compilation of most CLOS applications is significantly
3265 * optimization: added a limited bytecode compiler for simple toplevel
3266 forms, speeding up compilation and FASL loading
3267 * bug fix: the statistical profiler now properly distinguishes anonymous
3270 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3271 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3272 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3273 into subclasses of the finalized class. Now user calls to
3274 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3275 system return before any subclasses are finalized.
3276 * minor incompatible change: The reader no longer ignores errors
3277 regarding non-existent packages in #+ and #- feature tests.
3278 * new feature: command line options --no-sysinit, --no-userinit to
3279 inhibit loading the corresponding init files
3280 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3281 for sending data through UDP sockets (thanks to François-René Rideau)
3282 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3283 error is signalled instead (thanks to François-René Rideau)
3284 * minor incompatible change: Error signalling behaviour of lexical
3285 operations violating package locks has changed slightly. Refer to
3286 documentation on package locks for details.
3287 * enhancement: EVAL can process IF-expressions without resorting to the
3289 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3290 constant-folded properly due to missing out-of-line functions.
3291 (reported by Mika Pihlajamäki)
3292 * bug fix: LISTEN sometimes returned T even in cases where no data was
3293 immediately available from the stream
3294 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3295 were reversed. (reported by Levente Mészáros)
3296 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3297 when given a vector displaced to an adjustable array. (reported
3299 * bug fix: derivation of float boundaries from numbers outside the
3300 appropriate float range (reported by John Wiseman)
3301 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3303 * bug fix: precomputing cache entries for generic functions with
3304 some subclasses of specializers as yet invalid does not attempt to
3305 fill a cache line with a negative offset. (reported by Levente
3307 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3308 allow condition class objects as arguments to DOCUMENTATION and
3309 (SETF DOCUMENTATION); only find and set documentation for
3310 structure names for the STRUCTURE doc-type. (suggested by Gary
3312 * improvements to the Win32/x86 port:
3313 ** (user-homedir-pathname) and default initialization file
3314 locations now know about the user's "Documents and Settings"
3315 directory (thanks to Yaroslav Kavenchuk)
3316 ** run-program is implemented (thanks to Mike Thomas)
3317 ** sockets support (thanks to Timothy Ritchey)
3318 ** better backtrace support (thanks to Alastair Bridgewater)
3319 ** sb-grovel supported
3320 ** asdf-install and sb-posix work somewhat
3321 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3322 * improvements to the Solaris/x86 port:
3323 ** works on Solaris 11/Solaris Express
3324 ** floating-point exception handling support
3325 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3326 * fixed some bugs revealed by Paul Dietz' test suite:
3327 ** REMOVE-METHOD returns its generic function argument even when
3328 the method is not one of the generic functions' methods.
3329 ** objects declared as MEMBER types can be admissible arguments to
3330 structure accessors.
3331 ** printing characters should simply be printed by the FORMAT ~:C
3333 ** compiler failure when compiling functions with hairy constant
3334 defaults for optional parameters.
3335 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3336 function, which is already optimized.
3338 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3339 * new platform: experimental support for SBCL x86/Darwin, including
3340 MacOS X 10.4.5 on Intel.
3341 * new feature: Unicode character names are now known to the system
3342 (through CHAR-NAME and NAME-CHAR).
3343 * new feature: the filesystem location of SBCL's core file is
3344 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3345 * minor incompatible change: the contrib modules SB-POSIX and
3346 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3347 this change is to make it easier to distribute
3348 location-independent binaries.
3349 * bug fix: as implied by AMOP, standardized classes no longer have
3350 slots named by external symbols of public packages. (reported by
3352 * optimization: calling functions via constant symbols -- as in
3353 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3354 via the function object as in (FUNCALL #'FOO).
3355 * optimization: on x86 and x86-64, the calling convention for the
3356 case of dealing with an unknown number of values has been altered
3357 to be friendlier to the prediction heuristics implemented,
3358 particularly with reference to CALL and RET pairing. (thanks to
3359 Alastair Bridgewater)
3360 * optimization: on x86, the code for access to thread-local symbol
3361 values and binding/unbinding of thread-local symbols is smaller.
3362 (thanks to Alastair Bridgewater)
3363 * enhancement: CONSTANTP is now able to determine constantness of
3364 more complex forms, including calls to constant-foldable standardized
3365 functions and some special forms beyond QUOTE.
3366 * fixed bug: occasional GC crashes on Solaris/x86
3367 * optimization: x86-64 supports stack allocation of results of simple
3368 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3369 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3370 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3371 (thanks to James Knight)
3372 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3373 by the standard (thanks to Stephen Compall)
3375 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3376 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3377 be used for bundling the runtime and the core file into one
3378 executable binary. This feature is not currently supported on all SBCL
3379 platforms. (thanks to James Bielman and NIIMI Satoshi)
3380 * new feature: a generational or ephemeral garbage collector is now
3381 the default on the PowerPC platform (both Linux and Darwin). The
3382 old Cheney (stop and copy) collector is a build-time option.
3383 (thanks to Cyrus Harmon, after Raymond Toy)
3384 * minor incompatible change: the method by which SBCL finds its
3385 contributed modules has changed; it no longer relies on symbolic
3386 links from an $SBCL_HOME/systems directory, but searches directly
3387 in the subdirectories of $SBCL_HOME.
3388 * enhancement: the dynamic heap size on the Linux/PPC platform is
3389 markedly larger, even using the older Cheney garbage collector.
3390 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3391 certain complicated string types. (reported by Gary King)
3392 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3393 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3394 * fixed bug: DOCUMENTATION on structures no longer signals an
3395 error if no structure type of the right name exists. (reported by
3397 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3398 applicable non-standard primary or :AROUND method on
3399 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3400 no longer cause unbound variable errors. (reported by Kevin Reid)
3401 * fixed bug: metacircle resolution in cases where methods have slots
3402 added before the slots from STANDARD-METHOD. (reported by Jean
3404 * fixed bug: the Power PC assembly code for calling into lisp
3405 sometimes computed its return address wrongly (depending on the
3406 15th bit of the address, fixed at link time). This used to
3407 manifest itself in a segmentation violation while building PCL.
3408 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3409 many others over the years)
3410 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3411 the stack pointer (treated as a signed integer) is negative.
3412 (thanks to Peter van Eynde)
3414 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3415 * new platform: experimental support for the Windows operating
3416 system has been added. (thanks to Alastair Bridgewater)
3417 * fixed several bugs in and robustified the PPC FFI (including
3418 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
3419 * bug fix: allow non-simple string symbol names (reported by Paul
3421 * bug fix: interrupt handling on NetBSD (thanks to Richard M
3423 * bug fix: saving a core corrupted callbacks on x86/x86-64
3424 * bug fix: closed a loophole in metacircularity detection and
3425 grounding in the PCL implementation of CLOS.
3426 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
3427 (reported by tomppa on #lisp)
3428 * bug fix: clear the direction flag on Lisp -> C transitions, as
3429 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3430 (reported by Andrej Grozin and Hendrik Maryns)
3431 * optimization: major improvements to GC efficiency on GENCGC platforms
3432 * optimization: faster implementation of EQUAL
3433 * optimization: emit more efficient opcodes for some common
3434 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3435 * optimization: several other minor code-generation improvements on x86-64
3436 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3438 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3439 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3440 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3441 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3442 by ANSI as a generic function, and for consistency (SETF
3443 GENERIC-FUNCTION-NAME) is treated likewise.
3444 * fixed bug #233.b: make constraint propagation notice when a variable
3445 value is changed after it is referenced but before it is used
3446 * fixed bug #296: no more arbitrary behaviour from filenames with
3447 odd characters as --load arguments. (reported by Adam Warner)
3448 * fixed bug #390: :CHARACTER-SET pathname components now work as
3449 expected. (reported by Tim Daly Jr)
3450 * fixed bug #391: complicated :TYPE intersections in slot
3451 definitions no longer cause an error in PCL internals.
3452 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3453 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3454 returning the number of octets which would be written to the
3455 file-stream. (thanks to Robert J. Macomber)
3456 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3457 arguments to the internal stream functions. (thanks to David
3459 * bug fix: stack exhaustion is now handled on the x86/SunOS
3460 platform. (thanks to Daisuke Homma)
3461 * bug fix: more accurate ROOM results on GENCGC platforms
3462 * optimization: improved type inference for arithmetic-for
3463 index variables in LOOP
3464 * optimization: faster floating-point SQRT on x86-64
3465 * fixed some bugs revealed by Paul Dietz' test suite:
3466 ** DOCUMENTATION returns NIL instead of "" for method combinations
3467 that don't have a docstring
3469 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3470 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3471 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3472 therefore are not customizeable by user code (as seems to be at
3473 least permitted and maybe required by AMOP). As a consolation,
3474 however, the SBCL implementation of these functions now calls
3475 REINITIALIZE-INSTANCE as specified by AMOP.
3476 * bug fix: slot-definition documentation is propagated as per ANSI
3477 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3478 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3479 argument, as do eslotd initialization methods. (from Pascal
3480 Costanza's "Closer" project)
3481 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3482 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3484 * bug fix: it is now possible to have more than one subclass of
3485 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3486 (reported by Bruno Haible, Pascal Costanza and others)
3487 * bug fix: the dependent update protocol now works for generic
3488 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3489 and Pascal Costanza)
3490 * bug fix: condition-class instances corresponding to
3491 DEFINE-CONDITION forms are now created eagerly. (reported by
3492 Kalle Olavi Niemitalo on comp.lang.lisp)
3493 * bug fix: floating point printing is more accurate in some
3494 circumstances. (thanks to Simon Alexander)
3495 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3496 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3497 * bug fix: callbacks on OS X now preserve stack-alignment.
3498 (thanks to Cyrus Harmon)
3499 * enhancement: the x86-64 disassembler is much better at
3500 disassembling SSE instructions. (thanks to Lutz Euler)
3501 * enhancement: CHECK-TYPE on a variable now allows type-inference
3502 (thanks to Vincent Arkesteijn)
3503 * optimization: improved performance of EUC-JP external format.
3504 (thanks to NIIMI Satoshi)
3505 * optimization: performance improvements to IO on file streams of
3506 :ELEMENT-TYPE CHARACTER
3507 * optimization: much faster memory allocation on x86-64
3508 * optimization: faster garbage collections (latency and throughput)
3510 * optimization: faster bignum subtraction and division on x86 and x86-64
3511 (thanks to Lutz Euler)
3512 * optimization: more accurate type-inference for loops that use a
3513 floating point index variable or a negative step.
3515 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3516 * bug fix: add a workaround to SBCL looping infinitely at startup on
3517 Linux kernels with apparently buggy implementations of personality().
3518 (thanks to Svein Ove Aas)
3519 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3520 (thanks to David Lichteblau)
3521 * bug fix: local bindings shadow global symbol macros for
3522 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3523 * optimization: non-open coded uses of numeric comparison operators
3524 (e.g. >) no longer cons when called with more than one parameter
3525 on platforms supporting dynamic-extent allocation.
3526 * enhancement: saving cores with foreign code loaded is now supported
3527 on MIPS/Linux in addition to the previously supported platforms.
3528 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3529 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3530 * bug fix: division by zero in sb-sprof when no samples were collected
3531 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3532 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3533 (thanks to Alexander Kjeldaas)
3534 * new feature: ignoring the return values of destructive functions
3535 like NREVERSE signals a compile-time style-warning.
3536 (thanks to Kevin Reid)
3537 * new feature: the alignment of alien structure fields can be
3538 explicitly specified. (thanks to Cyrus Harmon)
3539 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3540 and dump core on SIGQUIT
3542 ** incompatible change: threads do not inherit values of specials
3543 from their parents (see manual)
3544 ** bug fix: threads stacks belonging to dead threads are freed by the
3545 next exiting thread, no need to gc to collect thread stacks anymore
3546 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3547 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3548 ** bug fix: dynamic variable and thread start related gc lossage
3549 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3551 * fixed some bugs revealed by Paul Dietz' test suite:
3552 ** SUBTYPEP is slightly more accurate on heinously complicated
3553 CONS types where some of the members have uncertain (in the
3554 NIL, NIL sense) type relationships to each other.
3556 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3557 no longer purified unless :PURIFY T is explicitly specified.
3558 ** Non-purified cores are significantly smaller than before
3560 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3561 * new feature: timers based on Zach Beane's excellent timer package
3562 * added support for the following external formats: koi8-u,
3563 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3564 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3565 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3566 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3567 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3568 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3569 * incompatible change: a threaded SBCL will no longer revert to
3570 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3571 * bug fix: interrupts are disabled until startup is complete; no
3572 more sigsegvs when receiving a signal to soon
3573 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3575 * bug fix: add a workaround for the memory randomization features in
3576 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3577 workaround will only be in effect on systems with the proc filesystem
3579 * bug fix: printing objects of type HASH-TABLE signals a
3580 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3582 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3583 have been running for over 50 days. (reported by Gilbert Baumann)
3584 * bug fix: the logic for getting names of functions gets less
3585 confused when confronded with alternate-metaclass
3586 funcallable-instances. (reported by Cyrus Harmon)
3587 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3588 consistent, even on internal alternate-metaclass objects.
3589 * bug fix: flush closure information collected by physical
3590 environment analysis prepass before the main pass. (bug reported
3592 * bug fix: compiler pack phase does not modify a hashtable, which is
3593 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3594 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3595 may be expanded. (reported by Alexander <malishev> on c.l.l)
3596 * bug fix: no more style-warnings when compiling code using LAST
3597 under high-SPEED low-SPACE settings. (reported by David Wallin
3599 * fixed some incompatibilities between SBCL's MOP and the MOP
3601 ** the METAOBJECT class is now implemented;
3602 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3603 STANDARD-OBJECT, as required;
3604 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3605 now compatible (as required by VALIDATE-SUPERCLASS); there
3606 remains a consistency requirement over the presence or absence
3607 of the FUNCTION class in the superclass list of finalized
3608 classes; see the manual for more details;
3609 ** the :AROUND method for COMPUTE-SLOTS on
3610 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3611 requested slot ordering.
3613 ** bug fix: parent thread now can be gc'ed even with a live
3615 ** bug fix: binding a special with PROGV to no value is not
3616 the same as that symbol not having been bound (thanks to
3618 ** bug fix: binding specials is thread safe (thanks to
3620 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3621 and SB-SPROF do not die with 'no handler for signal XX in
3622 interrupt_handle_now(..)' anymore
3623 ** bug fix: WITH-TIMEOUT works with multiple running threads
3624 * fixed some bugs revealed by Paul Dietz' test suite:
3625 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3626 the :method-class keyword argument.
3628 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3629 * new port: the Solaris operating system on x86 processors is now
3630 mostly supported, though some rough edges in the environment
3631 remain. (thanks to Daisuke Homma)
3632 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3633 space for its heap. (thanks to Thiemo Seufer)
3634 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3635 closures. (thanks to Thiemo Seufer)
3636 * minor incompatible change: eof selects abort in the debugger.
3637 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3638 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3640 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3641 deprecated, and will go away in a future revision of SBCL.
3642 * minor incompatible change: GC-ON and GC-OFF are no longer
3643 implemented with a counter, it does not matter how many times gc
3644 is switched on or off
3645 * bug fix: discriminating functions for generic function classes
3646 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3647 make invalid assumptions about method precedence order. (reported
3649 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3650 platforms. (thanks to Thiemo Seufer)
3651 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3652 * bug fix: correct pathname printing with printer escaping is on.
3653 (thanks to Kevin Reid)
3654 * bug fix: complex VOP definitions in "user-space" no longer trigger
3655 package locks. (reported by Zach Beane)
3656 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3657 for funcallable-instance functions, and is no different from
3659 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3660 characters in the current readtable. (reported by Nicholas Neuss)
3661 * bug fix: SUBTYPEP on various CONS types returns more a more
3662 accurate acknowledgment of its certainty.
3663 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3664 lists in some cases. This partially fixes bug 384.
3665 * flush all standard streams before prompting in the REPL and the
3667 * bug fix: signal handling and triggering gc do not conflict
3668 directly anymore, in particular a high frequency sb-sprof does
3669 not prevent gc from running
3670 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3671 approximation for timezone and DST information between the
3672 universal time epoch and the smallest negative 32-bit time_t.
3673 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3674 year 1899 so long as the encoded time is non-negative.
3675 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3676 the correct answer for non-constant rotate amounts when performing
3677 an inline 32-bit rotation.
3679 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3680 there is only one thread in the session
3681 ** bug fix: memory leak for streams created in one thread and
3682 written to in another
3683 ** bug fix: lockup when compiled with gcc4
3684 ** bug fix: race that allows the gc to be triggered when gc is
3686 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3687 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3689 ** bug fix: finished threads are gc'ed properly
3690 * fixed some bugs revealed by Paul Dietz' test suite:
3691 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3692 has arguments with a different set of applicable methods from
3693 the orignal arguments.
3694 ** The type error thrown by MAP now has a correct expected-type
3696 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3697 name a compiled function.
3698 ** Three MISC tests where a large bignum was improperly coerced to
3699 a float that couldn't represent that bignum during type
3700 derivation were fixed.
3701 ** SUBTYPEP can now handle types involving the negation of a
3702 list-form FUNCTION type.
3703 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3704 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3705 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3707 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3708 * New feature: Experimental support for bivalent streams: streams
3709 opened with :element-type :default now allow character and binary
3710 (unsigned-byte 8) I/O
3711 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3712 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3714 * bug fix: no more highly sporadic "couldn't check whether ~S is
3715 readable" when reading a stream and an interrupt hits in the middle
3716 of a select system call
3717 * compiler better recognizes complex arrays (reported by Eduardo
3719 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3720 for variables on SBCL built with linkage-tables. (reported by Luis
3722 * various error reporting improvements.
3723 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3724 (Thanks to Thiemo Seufer)
3725 * bug fix: nested reader invokations work correctly
3726 * bug fix: it is possible to have simultaneous references to foreign
3727 code and foreign data with the same name.
3729 ** added x86-64 support
3730 ** incompatible change: the threading api now works with thread
3731 objects instead of thread ids
3732 ** bug fix: threads are protected from signals and interruption when
3733 starting up or going down
3734 ** bug fix: a race where an exiting thread could lose its stack to gc
3735 ** bug fix: don't halt on infinite error in threads if possible
3736 ** fixed numerous gc deadlocks introduced in the pthread merge
3737 ** bug fix: fixed thread safety issues in read and print
3738 ** bug fix: debugger doesn't hang on session lock if interrupted at
3739 an inappropriate moment
3740 ** bug fix: run-program is now thread safe(r)
3741 ** bug fix: inner with-recursive-lock no longer releases the mutex
3742 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3743 * fixed some bugs revealed by Paul Dietz' test suite:
3744 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3745 EXPECTED-TYPE slots filled.
3746 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3748 ** MAKE-CONDITION accepts classes as type-designators.
3749 ** COMPILE may never return NIL.
3750 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3751 range before calling Unix time functions
3753 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3754 * numerous signal handling fixes to increase stability
3755 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3756 * minor incompatible change: we now correctly canonize default
3757 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3758 as per the MOP, rather than the historical (INITARG INITFUNCTION
3759 INITFORM). (reported by Bruno Haible)
3760 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3761 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3762 for more information.
3763 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3764 pathname is a directory pathname.
3765 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3766 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3768 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3769 :METACLASS argument in addition to a class name. (reported by
3770 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3771 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3772 (reported by Bruno Haible; patch from Gerd Moellmann)
3773 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3775 * bug fix: more cleanups to the floating point exception handling on
3776 x86-64 (thanks to James Knight)
3777 * bug fix: the compiler does not try to constant fold calls of
3778 COERCE and BIT-* functions when they return freshly constructed
3779 objects. (reported by Nikodemus Siivola and Paul Dietz)
3780 * optimization: improved the MIPS versions of generic (in the
3781 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3782 * optimization: direct conversion of (unsigned-byte 32) to floats on
3783 the PowerPC platform.
3784 * optimization: structure instances with raw slots now use less
3785 memory, and probably show better memory locality. (thanks to
3787 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3788 are treated as requests for stack allocation on the x86-64,
3789 Alpha-32, PPC and SPARC platforms.
3790 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3791 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3792 (thanks to Tony Martinez)
3794 ** gcing a dead thread can no longer lead to lockups
3795 ** threads block signals until they are set up properly
3796 ** errno is no longer shared by threads
3797 ** interrupt-thread restores the eflags register on x86
3798 ** fixed some lockups due to gc/thread interaction
3799 * fixed some bugs revealed by Paul Dietz' test suite:
3800 ** invalid dotted lists no longer raise a read error when
3801 *READ-SUPPRESS* is T
3802 ** signal an error if a symbol that names a declaration is used
3803 as the name of a type, or vice versa
3804 ** allow using the (declare (typespec var*)) abbreviation for
3805 (declare (type typespec var*)) with all type specifiers
3806 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3807 ** always return NIL from PPRINT-POP when OBJECT is NIL
3808 ** don't signal errors when pretty-printing malformed LABELS,
3809 FLET or MACROLET forms
3810 ** declarations in a DOLIST body are also in scope for the
3812 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3814 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3817 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3818 * fixed cross-compiler leakages that prevented building a 32-bit
3819 target with a 64-bit host compiler.
3820 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3821 opened with :IF-EXISTS :OVERWRITE.
3822 * fixed bug 281: error for an invalid qualifier in a short-form method
3823 combination method is not signalled until the faulty method is called.
3824 * bug fix: iteration variable type inferrer failed to deal with open
3825 intervals. (reported by Alan Shields)
3826 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3827 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3828 or more runtime options were provided to the sbcl binary.
3829 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3830 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3831 * optimization: there's now a fast-path for fixnum arguments in the
3832 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3833 * optimization: the code generated on x86-64 is more compact thanks
3834 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3835 * bug fix: floating-point exception handling now partly works on
3836 x86-64. (Thanks to James Knight)
3837 * improvement to the MIPS backend from Thiemo Seufer: C-style
3838 64-bit long long arguments and return values to alien functions
3840 * fixed some bugs revealed by Paul Dietz' test suite:
3841 ** the type-error signalled from WARN has a filled-in DATUM slot.
3842 ** the type-error required when a stream is not associated with
3843 a file has the stream as its datum.
3844 ** type-errors on single-floats on x86-64 no longer have
3845 :INVALID-OBJECT as the datum
3846 ** the type-errors signalled for invalid function names now have
3847 a correct expected type
3848 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3849 for structures defined with a :TYPE. Documentation strings for
3850 typed structures are no longer immediately discarded
3851 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3852 broadcast streams and synonym streams. FILE-LENGTH now also works
3853 on broadcast streams.
3855 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3856 * incompatible change: the --noprogrammer option, deprecated since
3857 version 0.7.5, has been removed. Please use the equivalent
3858 --disable-debugger option instead.
3859 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3861 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3862 inoperational for a while now) has been completely removed.
3863 * null lexical environments are now printed as #<NULL-LEXENV>,
3864 significantly reducing the amount of clutter in typical backtraces.
3865 * documentation on weak pointers, finalization, and after GC hooks
3866 has been added to the manual.
3867 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3868 as other specialized array types, is much faster. SUBSEQ and
3869 COPY-SEQ on such arrays have also been sped up.
3870 * optimization: EQL is now more efficient when at least other argument
3871 is known to be of type (OR FIXNUM (NOT NUMBER)).
3872 * fixed bug: the runtime is now less vulnerable to changes in the
3873 size of the SBCL object on OS X, and virtual memory is reserved for
3874 all spaces that need to be at a fixed address.
3875 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3876 * fixed bug: finalizers and after GC hooks that cause consing are now
3878 * fixed bug: compiler error messages and summaries are now printed to
3879 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3880 * fixed inference of the upper bound of an iteration variable.
3881 (reported by Rajat Datta).
3882 * fixed bug 211e: calling local functions with duplicated constant
3883 keyword argument no longer causes a bogus style warning about an
3885 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3886 ftype declaration to be disregarded. (reported by Dave Roberts)
3887 * fixed bug 373: caused by erronous compilation of references to alien
3888 variables in the runtime on ppc/darwin.
3889 * fixed bug 376: CONJUGATE type deriver.
3890 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3891 (reported by Baughn on #lisp)
3892 * a cross-compiler bug on non-x86 platforms has been identified and
3893 fixed. (thanks to Bruno Haible)
3894 * improvements to the MIPS runtime code for increased stability.
3895 (thanks to Thiemo Seufer)
3896 * increased the maximimum compact environment size to allow
3897 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3898 * partial workaround for bug 135: don't name the function we're
3899 calling for hairy cases of EVAL, so as not to accumulate one environment
3900 entry per call to EVAL. (reported by Kevin Reid)
3901 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3902 * optimization: type testing for non-vector arrays should be faster.
3903 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3905 * bug fix: setting 31st element of a bit vector to zero did not work
3907 * bug fix: redefining a class definition which failed due to a
3908 previous accessor / function clash now works (but see BUGS entry
3909 #380 for more problems in this area). (thanks to Zach Beane)
3910 * the long form of DEFINE-METHOD-COMBINATION disables method group
3911 checking when given a single method group with pattern *. (thanks
3913 * on x86 compiler supports stack allocation of results of simple
3914 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3915 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3916 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3917 * fixed some bugs related to Unicode integration:
3918 ** the restarts for recovering from input and output encoding
3919 errors only appear when there is in fact such an error to
3921 * fixed some bugs revealed by Paul Dietz' test suite:
3922 ** MISC.549 and similar: late transformation of unsafe type
3923 assertions into derived types caused unexpected code
3925 ** SCALE-FLOAT type deriver is less wrong.
3926 ** type derivers for EXP, LOG and similar functions compute result
3927 types for complex arguments better.
3928 ** (MISC.563) CONJUGATE type deriver works for very restricted
3930 ** out-of-line type testers for character strings are available.
3931 ** EQUAL compiler transform understands specialness of objects
3933 ** accessing double-floats stored on the stack now works on x86-64.
3934 ** debugger internals could sometimes create invalid lispobjs,
3935 resulting in GC crashes.
3936 ** MISC.548: type check weakening can convert required type into
3938 ** initialization forms for bindings are not in scope of free special
3941 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3942 * incompatible change: thread support for non-NPTL systems has
3943 been removed - locking is buggy and unreliable. A threaded
3944 SBCL build will now warn at startup and refuse to create
3945 new threads, unless futex support is detected in the kernel
3946 * incompatible change: the top level REPL now has only an ABORT
3947 restart associated with it, not TOPLEVEL and ABORT as it used to.
3948 TOP and TOPLEVEL are now available as debugger commands for
3949 returning to the top level.
3950 * incompatible change: forms evaluated in the REPL now use the
3951 global optimization policy.
3952 * incompatible change: user- and system-initialization files are
3953 no longer processed with LOAD, but by READ and EVAL; hence the
3954 global optimization policy, startup package, readtable, etc,
3956 * The .fasl file format number has been incremented because of
3957 various incompatible changes.
3958 * internal entry point details and argument counts no longer appear
3959 in backtraces unless explicitly requested by setting
3960 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3961 * built-in and standard functions no longer have names like "top
3962 level local call to FOO".
3963 * fixed bug 32: functions defined in non-null lexical environments
3964 now have more legible printed representation
3965 * fixed bug 33: functions defined in non-null lexical environemnts
3966 are now more amenable to inspection by INSPECT.
3967 * workaround for bug 354: XEPs no longer appear in backtraces unless
3968 explicitly requested.
3969 * fixed bug: receiving the signal which results from attempting to
3970 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3971 SIGBUS on other *BSDs) on architectures where the C stack is also
3972 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3973 to debugger confusion or wild instability. (reported by Cheuksan
3975 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3976 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3977 (reported by Lutz Euler)
3978 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3979 compiled code. (reported by Paul Dietz)
3980 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3981 specialized parameter to a method to something that is not TYPEP
3982 the specializer is now possible.
3983 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3984 face of package deletion.
3985 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3986 pathname. (reported by David Tolpin on c.l.l)
3987 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3988 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3989 STRING-STREAM and FILE-STREAM, respectively.
3990 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3991 than previously; in addition, its test suite is now run on build.
3992 (thanks to Luke Gorrie)
3993 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3994 * optimization: added a immediate representation for single-floats
3996 * fixed some bugs revealed by Paul Dietz' test suite:
3997 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3998 ** attempting to create a package with a colliding nickname causes
3999 correctable errors to be signalled.
4000 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
4001 ** several x86-64 backend bugs related to sign-extension of immediate
4004 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
4005 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
4006 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
4008 * fixed loading of multiply forward-referenced layouts.
4009 (thanks to Cheuksan Wang)
4010 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
4011 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
4012 (see COMPILE-FILE documentation for details of :PRINT option)
4013 * fixed bugs 19 and 317: fixed-format floating point printing is
4014 more accurate. This also fixes a bug reported by Adam Warner
4015 related to the ~@F format directive.
4016 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
4018 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
4019 dispatch table if the from-char is a dispatch macro character.
4020 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
4021 by the wordsize no longer ignore the last word. (reported by Lutz
4023 * fixed bug in type checking of dynamic-extent variables. (reported
4025 * optimization: sequence traversal functions use their freedom to
4026 coerce function designators to functions.
4027 * optimization: code with many calls to CLOS methods specialized on
4028 CLOS classes has had redundant type checks removed.
4029 * optimization: added declarations to speed up operations that access
4030 the internal character database (for example STRING-UPCASE)
4031 * optimization: comparison operations between floats and sufficiently small
4032 fixnums no longer create extra rationals
4033 * fixed some bugs related to Unicode integration:
4034 ** portions of multibyte characters at the end of buffers for
4035 character-based file input are correctly transferred to the
4036 start of the buffer at the next read.
4037 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
4038 passing it through to OPEN.
4039 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
4040 argument given to internal calls to OPEN.
4041 ** the built-in comment readers (introduced by character sequences
4042 ";" and "#|") are more forgiving to encoding errors; they will
4043 STYLE-WARN and then attempt to resync the stream at a character
4044 boundary. (thanks to Teemu Kalvas)
4045 * fixed some bugs in the x86-64 port:
4046 ** Negative short int return values from c-calls are sign-extended
4048 ** The stack is aligned to 16-bytes for c-calls, as required by
4049 the ABI. (thanks to Cheuksan Wang)
4050 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
4051 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
4052 for enums. (thanks to Vincent Arkesteijn)
4053 ** Multiple small optimizations and bugfixes for floating point
4055 * fixed some bugs revealed by Paul Dietz' test suite:
4056 ** Space, Tab, Linefeed, Return and Page have the invalid
4057 secondary constituent character trait.
4058 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
4060 ** WITH-INPUT-FROM-STRING should only update the index place on
4062 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
4063 works more reliably.
4064 ** Bit-array operations (BIT-AND and similar) worked incorrectly
4065 with one-dimensional arrays with fill pointers.
4066 ** TYPE-OF failed on a complex with an integer realpart and a
4068 ** compiler failure during type inference for the code of form
4069 (IF (EQL X (THE ...)) ...) (MISC.535).
4071 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
4072 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
4073 platform. The port supports 61-bit fixnums, large memory spaces
4074 and reloading shared object files.
4075 * enhancement: saving cores with foreign code loaded is now
4076 supported on ppc/Darwin in addition to the previously supported
4078 * enhancement: the statistical profiler now walks deeper into the
4079 call stack for more meaningful call-graphs and accrued time
4080 reports (x86/x86-64 only). It also now reports time spent in
4082 * enhancement: it is now possible to trace most individual methods
4083 of a generic function in addition to tracing the generic function
4085 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
4087 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
4088 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
4089 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
4090 produces an error. (thanks to Vincent Arkesteijn)
4091 * bug fix: NAMESTRING on pathnames with :WILD components in their
4092 directories works correctly. (thanks to Artem V. Andreev)
4093 * fixed bug 125: compiler preserves identity of closures. (reported
4095 * bug fixed: functions with &REST arguments sometimes failed with
4096 "Undefined function" when compiled with (DEBUG 3). (reported by
4098 * bug fix: overflow during compiling of setting element of a bit
4099 vector with constant index and value. (reported by Timmy Douglas)
4100 * build fix: fixed the dependence on *LOAD-PATHNAME* and
4101 *COMPILE-FILE-PATHNAME* being absolute pathnames.
4102 * on x86 compiler partially supports stack allocation of dynamic-extent
4104 * GO and RETURN-FROM do not check the extent of their exit points
4105 when compiled with SAFETY 0.
4106 * fixed some bugs related to Unicode integration:
4107 ** encoding and decoding errors are now much more robustly
4108 handled; it should now be possible to recover even from invalid
4109 input or output to the terminal. (thanks to Teemu Kalvas)
4110 ** provided a first cut at implementing STRING-TO-OCTETS and
4111 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
4112 ** altered the SB-MD5 contributed module slightly, changing the
4113 interface just enough for it to be supportable for builds where
4114 lisp characters are not eight bits.
4115 * fixed some bugs revealed by Paul Dietz' test suite:
4116 ** the FORMATTER-generated functions for ~V[ conditionals require
4117 the correct number of arguments.
4118 ** READ-FROM-STRING returns the mandated second value when applied
4119 to displaced strings.
4120 ** the #\Rubout and #\Backspace characters are treated as invalid
4121 constituent characters by the tokenizer.
4123 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
4124 * new feature: reloading changed shared object files with
4125 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4126 * new feature: references to foreign variables and functions
4127 can now be compiled and loaded before the corresponding shared
4128 object file is loaded, as long as the foreign definitions are
4129 available at runtime.
4130 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
4131 supported. (thanks to Dan Debertin)
4132 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
4133 just keywords. (thanks to Vincent Arkesteijn)
4134 * fixed bug #331: structure-class instances corresponding to
4135 DEFSTRUCT forms are now created eagerly.
4136 * fixed bug #345: backtraces from calls to undefined functions work
4137 on x86 as well. Related bug #61 is now also partially fixed on x86
4138 (backtraces from throws to unknown catch tags.)
4139 * bug fix: lambda-list parsing is now stricter vrt. order and number
4140 of lambda-list keywords.
4141 * bug fix: as specified by AMOP, an error is signalled if a
4142 class-option appears multiple times in a DEFCLASS form. (reported
4144 * bug fix: RANDOM can be compiled when the compiler derives the type
4145 of its numeric argument as a disjoint set of small integers.
4146 (reported by Paul Dietz)
4147 * bug fix: starting a core saved with shared objects loaded when
4148 those objects are not available no longer causes threaded SBCL to
4149 hang. (reported by Sean Ross)
4150 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
4152 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
4153 argument, which must always be NIL. (reported by Kalle Niemitalo)
4154 * bug fix: printing 1.0d+23 no longer results in an error.
4155 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
4156 * bug fix: structure slot setters preserve evaluation order. (thanks
4158 * fixed some bugs related to Unicode integration:
4159 ** RUN-PROGRAM can allow its child to take input from a Lisp
4160 stream. (reported by Stefan Scholl)
4161 ** ASDF-INSTALL successfully downloads .tar.gz files in all
4162 locales. (reported by Ken Causey)
4163 * fixed some bugs revealed by Paul Dietz' test suite:
4164 ** INCF, DECF and REMF evaluate their place form as specified in
4166 ** FORMATTER expands ~{ ~} iteration directives with V or #
4167 parameters correctly.
4168 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4169 consequent uses no arguments correctly.
4170 ** the system has a partial understanding of the (COMPLEX RATIO)
4172 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4175 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4176 * new feature: a build-time option (controlled by the :SB-UNICODE
4177 keyword feature, enabled by default) for building the system with
4178 support for the entire 21-bit character space defined by the
4180 * new feature: the system now has rudimentary external-format
4181 support; the primary user-visible change at this time is that
4182 characters with the high bit set (such as lower-case-e-acute) will
4183 print correctly to a terminal in a UTF-8 environment.
4184 * minor incompatible change: BASE-CHAR no longer names a class;
4185 however, CHARACTER continues to do so, as required by ANSI.
4186 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4187 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4188 has been moved to the SB-EXT package (temporarily re-exported from
4190 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4191 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4193 * fixed bug #351: better error-handlind and reporting for malformed
4195 * fixed bug #350: bignum-printing is now more memory-efficient,
4196 allowing printing of very large bignums, eg. (expt 2 10000000).
4197 (reported by Bruno Haible)
4198 * fixed bug #302: better primitive-type selection for intersection
4200 * fixed bug #308: non-graphic characters now all have names, as
4201 required. (reported by Bruno Haible)
4202 * bug fix: redefining a class with different superclasses now correctly
4203 removes it from the direct-subclasses of its previous superclasses.
4204 (reported by David Morse)
4205 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4206 new value now works. (reported by Bruno Haible)
4207 * bug fix: correct canonicalization of multiple non-standard slot
4208 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4209 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4210 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4211 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4212 now exists, an signals an error.
4213 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4214 during macroexpansion for non-iteration variables as well. (reported
4215 by Bruno Haible for CMUCL)
4216 * bug fix: Cyclic structures and unprintable objects in compiler
4217 messages no longer cause errors. (reported by Bruno Haible)
4218 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4219 and READ-FROM-STRING all now return a primary value of NIL if
4220 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4221 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4222 (reported by Bruno Haible for CMUCL)
4223 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4224 do not designate a condition. (reported by Bruno Haible for
4226 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4227 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4228 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4229 permitting resolution in favour of any of the conflicting symbols.
4230 (reported by Bruno Haible for CMUCL)
4231 * bug fix: EQUAL compiler optimizations is less aggressive on
4232 strings which can potentially compare true despite having distinct
4233 specialized array element types.
4234 * bug fix: unit enumerations can be defined without dividing by
4235 zero. (thanks to Vincent Arkesteijn)
4236 * FORMAT compile-time argument count checking has been enhanced.
4237 (report from Bruno Haible for CMUCL)
4238 * a partial workaround for the bug 262: the compiler does not try to
4239 inline-expand a local function doing RETURN-FROM from a deleted
4240 BLOCK. (thanks to Peter Denno for the bug report and to David
4241 Wragg for the simple test case)
4242 * fixed some bugs revealed by Paul Dietz' test suite:
4243 ** RENAME-PACKAGE allows all package designators as new package
4245 ** constraint propagation and lambda variable substitution are
4246 more cautious in dealing with partially deleted code.
4247 ** compiler sometimes lost reoptimization passes.
4248 ** CERROR, given a condition as condition designator, passes its
4249 remaining arguments to the continue format control without
4251 ** Case-altering FORMAT directives work correctly on non-ASCII
4253 ** The REAL type specifier handles bounds outside the floating
4254 point ranges without signalling FLOATING-POINT-OVERFLOW.
4255 ** Functions with IR1-transformations can create intercomponent
4256 references to global functions.
4257 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4259 ** FORMAT ~R treats a nil value for its first parameter correctly.
4261 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4262 * enhancement: saving cores with foreign code loaded is now
4263 supported on x86/NetBSD and sparc/Linux in addition to the previously
4264 supported platforms.
4265 * bug fix: on some platforms repeated installations caused multiple
4266 copies of HTML documentation to be installed -- should not happen
4267 any more. (reported by Stefan Scholl)
4268 * bug fix: parsing self-recursive alien record types multiple times
4269 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4270 original patch by Helmut Eller for CMUCL)
4271 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4272 (thanks to Richard Kreuter)
4273 * bug fix: defining classes whose accessors are methods on existing
4274 generic functions in other (locked) packages no longer signals
4275 bogus package lock violations. (reported by François-René Rideau)
4276 * bug fix: special variables as DEFMETHOD parameters no longer have
4277 associated bogus type declarations. (reported by David Wragg and
4279 * bug fix: read-write consistency on streams of element-type
4280 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4281 * bug fix: redefiniton of the only method of a generic function with
4282 no DEFGENERIC no longer emits a full WARNING. In addition,
4283 redefinition of generic functions with no DEFGENERIC to an
4284 incompatible lambda list now signals an error. (thanks to Zach
4286 * bug fix: DEFGENERIC now works even when there's a function of the
4287 same name in an enclosing lexical environment. (thanks to Zach
4289 * fixed compiler failure, caused by instrumenting code during
4290 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4291 * optimization: added loop analysis and improved register allocation
4292 * fixed some bugs revealed by Paul Dietz' test suite:
4293 ** POSITION on displaced vectors with non-zero displacement
4294 returns the right answer.
4295 ** (SIMPLE-STRING) is a valid type specifier for sequence
4297 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4299 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4300 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4302 ** The justification version of the FORMAT ~< directive treats
4303 non-zero minpad parameter correctly.
4305 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4306 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4307 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4308 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4309 the supported interface.
4310 * new feature: Single-stepping of code compiled with DEBUG 2 or
4311 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4312 * new feature: saving cores with foreign code loaded is now
4313 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4314 Timothy Moore's work for CMUCL)
4315 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4316 parameters to * instead of NIL if no initform is supplied.
4317 (reported by Johan Bockgaard)
4318 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4319 correctly when FUNCALL appears as the car of the form. Note:
4320 despite this FUNCALL forms are not currently subject to
4321 compiler-macro expansion. (port of Raymond Toy's fix for the
4322 same from CMUCL, reported by Johan Bockgaard)
4323 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4324 (thanks for Teemu Kalvas)
4325 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4326 case instead of terminating the iteration (thanks for Julian
4327 Squires, Sean Champ and Raymond Toy)
4328 * bug fix: incorrect expansion of defgeneric that caused a style
4329 warning. (thanks for Zach Beane)
4330 * bug fix: slot accessor effective method computation works properly
4331 for classes with multiple non-standard applicable methods on
4332 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4333 * on x86 compiler supports stack allocation of results of LIST and
4334 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4335 CMUCL implementation by Gerd Moellmann)
4336 * fixed some bugs revealed by Paul Dietz' test suite:
4337 ** FORMAT strings with both the ~<~:;~> form of the justification
4338 directive and pretty-printing directives cause an error.
4340 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4341 * incompatible change: the internal functions
4342 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4343 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4344 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4345 instead of the old functions.
4346 * new feature: on platforms where "dladdr" is available foreign
4347 function names now appear in backtraces. (based on Helmut Eller's
4349 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4350 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4352 * documentation: ASDF manual is now distributed with SBCL.
4353 * bug fix: SBCL can now load its contributed modules with REQUIRE
4354 even if the system-provided entries have been removed from
4355 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4357 * bug fix: backtraces involving undefined functions or assembly
4358 routines are more informative. (thanks to Brian Downing)
4359 * bug fix: mutually referent alien structures now work correctly.
4360 (reported by Rick Taube)
4361 * bug fix: structures defined by WITH-ALIEN can be referred to
4362 within other definitions in the same WITH-ALIEN.
4363 * bug fix: division operators (MOD, TRUNCATE and the like) with
4364 constant zero divisors and integer dividends no longer generate
4366 * bug fix: provide default methods for INPUT-STREAM-P and
4367 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4368 * bug fix: improve the detection and resolution of MOP metacycles
4369 (where effective method computation depends on the generic function
4370 having its effective method computed). (reported by Bruno Haible)
4371 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4372 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4373 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4374 * bug fix: pathnames with relative directory components can be
4375 represented relative to default pathnames.
4376 * optimization: in taking the GCD of bignums, reduce the two bignums
4377 to approximately the same size (using Euclid's algorithm) before
4378 applying the more sophisticated binary GCD. (thanks to Juho
4380 * optimization: COUNT on bitvectors now operates word-at-a-time.
4381 * optimization: ASH with a positive, but not necessarily constant,
4382 (leftwards) shift, when in a modular context, is compiled to a
4384 * fixed some bugs revealed by Paul Dietz' test suite:
4385 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4386 if the corresponding argument is NIL.
4387 ** FORMAT directives accepting a minpad parameter treat negative
4389 ** literal commas as character parameters to FORMAT directives are
4391 ** literal spaces directly after ~<Newline> directives within a
4392 format-logical-block (~:< ~@:>) do not induce :FILL-style
4393 conditional newlines.
4394 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4395 as specified: it no longer includes conditional newlines).
4396 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4398 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4399 :PER-LINE-PREFIX argument does not evaluate to a string.
4401 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4402 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4403 the manual for details; for now, package locks can be disabled by
4404 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4405 if no major problems are found then it is likely that they will be
4406 compiled in unconditionally.
4407 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4408 unsupported operators on all platforms. To load a shared library
4409 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4410 object file, link it into a shared library outside of SBCL and
4411 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4413 * bug workaround: ROOM T and the GC were not working together
4414 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4415 reporting facility aren't preserved. That reporting has been
4416 disabled, so now until and unless someone figures out how to make it
4417 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
4418 * minor incompatible change: as threatened around sbcl-0.8.0, the
4419 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
4420 The symbols are also exported from SB-PCL for backwards
4421 compatibility, but more so than before SB-PCL should be treated as
4422 an implementation-internal package.
4423 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
4425 * the SB-SPROF contrib now works on (most) non-x86 architectures.
4426 It is known as of this release not to work on the Alpha, however.
4427 * fixed bug #167: errors signalled due to illegal syntax in method
4428 bodies are now more legible.
4429 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4430 designators and can hence be used with TYPEP.
4431 * fixed bug #333: CHECK-TYPE now ensures that the type error
4432 signalled, if any, has the right object to be accessed by
4433 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4434 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4435 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4437 * fixed bug #334: programmatic addition of slots using specialized
4438 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4439 and :ALLOCATION :CLASS slots.
4440 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4441 float exponents. (rereported by Peter Seibel)
4442 * fixed a bug: #\Space (and other whitespace characters) are no
4443 longer considered to be macro characters in standard syntax by
4444 GET-MACRO-CHARACTER.
4445 * fixed bug: initialization of condition class metaobjects no longer
4446 causes an instance of the condition to be created. (reported by
4448 * fixed bug: it is now possible to have slots such that
4449 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4450 description is neither :INSTANCE nor :CLASS.
4451 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4452 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4453 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4454 non-standard SLOT-DEFINITION-ALLOCATION values.
4455 * fixed bugs: various race conditions handling exiting threads.
4456 CL-PPCRE's thread torture test now passes.
4457 * fixed arguably-a-bug: GC time proportional to number of threads in
4458 system even when most of them are idle
4459 * optimization: improved performance of BIT and SBIT on bit-vectors.
4460 * .fasl file incompatibility: The fasl file version number has
4461 been incremented because of changes associated with package locks.
4463 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4464 * minor incompatible change: the system no longer provides
4465 optimization hints (conditions which are TYPEP
4466 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4467 mode; these hints are still emitted when higher SPEED optimization
4469 * new contrib module: a sampling profiler (profiling by statistical
4470 sampling, rather than by instrumenting functions) is available as
4471 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4472 * the behaviour of the standard function ED is now customizeable by
4473 third parties through a hook variable: see ED's documentation
4474 string for information on the protocol.
4475 * the compiler no longer emits efficiency notes for (FUNCALL X)
4476 when the type of X is uncertain under default optimization
4478 * fixed bug 276: mutating a binding of a specialized parameter to a
4479 method to something that is not TYPEP the specializer is now
4481 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4482 exhibit the required behaviour on the x86 platform. (thanks to
4483 Peter van Eynde, Eric Marsden and Bruno Haible)
4484 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4485 even for difficult arguments. (reported by Peter Graves)
4486 * fixed bug 141a: the backquote printer now descends quoted
4488 * fixed another bug in backquote printing: no more destructive
4489 modification of the form's list structure. (reported by Brian
4491 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4492 move between its address being taken and the call to
4493 interrupt_thread, fixing a crashing race condition.
4494 * the SB-POSIX contrib implementation has been adjusted so that it
4495 no longer exhibits ridiculously poor performance when constructing
4496 instances corresponding to C structs.
4498 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4499 * minor incompatible change: the sb-grovel contrib now treats C
4500 structures as alien (in the sense of SB-ALIEN) objects rather than
4501 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4502 has implications for memory management of client code
4503 (sb-grovel-returned objects must now be manually managed) and for
4504 type safety (alien objects now have full types).
4505 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4506 used to control emission of compiler diagnostics, rather than the
4507 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4508 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4509 quality should be considered deprecated.
4510 * install.sh now installs the user manual as well
4511 * (not quite a new documentable feature, but worth considering in
4512 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4513 beginnings of a semantically meaningful condition hierarchy is
4514 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4516 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4517 designator as the defaults argument.
4518 * fixed bug: Displaced arrays whose displaced-to array has become
4519 too small now cause ARRAY-DIMENSION to signal an error, providing
4520 for safer bounds-checking. (reported by Bruno Haible)
4521 * fixed bug: DEFCLASS slot definitions with identical :READER and
4522 :WRITER names now signal a reasonable error. (reported by Thomas
4524 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4526 * fixed bug: Invalid slot specification errors now print correctly.
4527 (thanks to Zach Beane)
4528 * fixed bug 320: Shared to local slot value transfers in class
4529 redefinitions now happen corrently from superclasses as
4530 well. (reported by Bruno Haible)
4531 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4533 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4534 improper lists correctly. (reported by Bruno Haible)
4535 * fixed bug 313: source-transform for <fun-name> was erroneously
4536 applied to a call of a value of a variable with name <fun-name>.
4537 (reported by Antonio Menezes Leitao)
4538 * fixed bug 307: The obsolete instance protocol ensures that
4539 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4540 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4541 remove dead unknown-values globs from the middle of the stack.
4542 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4543 easier to resume long computations after using *BREAK-ON-SIGNALS*
4544 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4545 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4546 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4547 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4548 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4549 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4551 * fixed a (fairly theoretical) bug in string printing: if
4552 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4553 does not have array-element-type equal to the most general string
4555 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4556 function name. (thanks to Nikodemus Siivola)
4557 * fixed bug: compile-time format string checker failed on
4558 non-closed ~{. (reported by Thomas F Burdick)
4559 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4560 don't warn on legal loop code involving more than one aggregate
4561 boolean. (thanks to Nikodemus Siivola)
4562 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4563 in keyword position to MAKE-PACKAGE was not being reported as
4565 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4566 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4568 * fixed bugs 280 and 312: the checking for multiple definitions in a
4569 file is less likely to become confused by uses of inline
4571 * fixed bug: the #S reader macro performs the keyword coercion
4572 specified for slot names. (reported by Kalle Niemitalo)
4573 * fixed bug: lambda lists may contain symbols whose names start with
4574 & but are not lambda-list-keywords; their occurrence triggers a
4576 * fixed bug 321: define-method-combination argument lambda lists do
4577 not cause invalid code to be generated when &optional or &aux
4578 variables have default values. (reported by Bruno Haible)
4579 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4580 have CLOS classes; this appears also to have fixed reported
4581 instability in stack exhaustion detection.
4582 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4583 MUFFLE-WARNING when no associated restart is present is now
4585 * optimization: rearranged the expansion of various defining macros
4586 so that each expands into only one top-level form in a
4587 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4589 * optimization: used a previously little-used slot in symbols to
4590 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4592 * fixed some bugs revealed by Paul Dietz' test suite:
4593 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4595 ** Fixed an optimization bug related to inheritance of initforms
4596 from local to shared slots.
4597 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4598 ** CAST optimizer forgot to flush argument derived type.
4599 ** print/read consistency on floats is now orders of magnitude
4600 more likely. (thanks also to Bruno Haible for a similar report
4602 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4603 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4604 for objects of type REAL. Make it so.
4605 ** SXHASH is specified (infelicitously) to respect similarity,
4606 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4607 it so. (thanks to Markus Ziegler)
4608 ** on the Alpha, the compiler succeeds in compiling functions
4609 returning a known number of arguments greater than 63.
4610 ** fixed handling of invalid NIL arguments in keyword position
4612 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4614 ** provided a readably-printable representation for RANDOM-STATE
4616 ** ensured that pathnames, where they have a namestring, always
4617 print using #P"..." syntax.
4619 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4620 * Support for the forthcoming 2.0 version of the NetBSD kernel
4621 running on x86 hardware has been added. (thanks to Perry
4622 E. Metzger most immediately, and others for their past work)
4623 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4624 current release version; SBCL's OpenBSD support had been broken
4625 since about the time of OpenBSD's switch to ELF binary format.)
4626 * [placeholder for DX summary]
4627 ** user code with &REST lists declared dynamic-extent, under high
4628 speed or space and low safety and debug optimization policy.
4629 * The manual has been converted to Texinfo format and the debugger
4630 chapter from the cmucl manual has been added.
4631 * A facility has been added to extract documentation strings from
4632 sbcl and store them as Texinfo-formatted snippets for inclusion in
4633 the manual (via Texinfo's @include directive)
4634 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4635 the test case to Dave Roberts)
4636 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4637 pointers. (reported by Sean Ross)
4638 * bug fix: PROFILE output is printed nicely even for large numerical
4639 values. (thanks to Zach Beane)
4640 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4641 greater than 32 handle EOF correctly.
4642 * bug fix: on X86 an immediate argument of the IMUL instruction is
4643 correctly printed in disassembly. (thanks to Lutz Euler)
4644 * bug fix: class slots in redefined classes preserve their old
4645 values. (thanks to Bruno Haible and Nikodemus Siivola)
4646 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4647 succeeds. (reported by Marco Baringer)
4648 * fixed some bugs revealed by Paul Dietz' test suite:
4649 ** READ-SEQUENCE now works on ECHO-STREAMs.
4650 ** RATIONALIZE works more according to its specification. (thanks
4653 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4654 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4655 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4656 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4657 should matter to you only if you rebind the printer control
4658 variables and then find you want different bindings in the
4659 debugger than in the ordinary execution of your program.)
4660 * The runtime build system has been tweaked to support building
4661 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4662 assembler and linker. (thanks to Nikodemus Siivola)
4663 * Unbound, undefined, undeclared variables now trigger full
4664 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4665 more often programmer error than deliberate exploitation of undefined
4667 * optimization: the hash algorithm for strings has changed to one
4668 that is less vulnerable to spurious collisions. (thanks to Juho
4670 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4671 needless bounds checking. (thanks to Juho Snellman)
4672 * optimization: implemented multiplication as a modular
4673 (UNSIGNED-BYTE 32) operation on the PPC backend.
4674 * fixed some bugs revealed by Paul Dietz' test suite:
4675 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4677 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4678 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4679 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4681 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4683 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4685 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4686 their output stream on EOF from read.
4687 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4688 have been read to end-of-file.
4689 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4691 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4692 description of determination of which consecutive characters
4694 ** Printing the "Space" character with escaping on now yields "#\\ ",
4695 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4696 ** Reading floating-point numbers with *READ-BASE* set to a number
4697 less than 10 works correctly.
4698 ** Reading floating-point numbers with *READ-BASE* set to a number
4699 more than 10 works correctly.
4700 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4701 the readtable currently in effect.
4703 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4704 * minor incompatible change: parsing of namestrings on a physical
4705 (Unix) host has changed; numbers after the final #\. in a
4706 namestring are no longer interpreted as a version field. This is
4707 intented to be largely invisible to the user, except that the
4708 meaning of the namestring "*.*.*" has changed: it now refers to a
4709 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4710 should usually be replaced by
4711 (make-pathname :name :wild :type :wild :version :wild)
4712 with the added benefit that this is more likely to be portable.
4713 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4714 option to OPEN now signals an error if the file being opened
4715 exists; this may have an impact on existing code.
4716 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4717 signals received, on the PowerPC platforms (both Linux and
4718 Darwin). (thanks to Pierre Mai for pointing out the location of
4720 * several fixes on OS X: The system now builds and runs cleanly on
4721 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4722 (thanks to Brian Mastenbrook)
4723 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4724 second-resolution: integer multiples of 1/3600 between -24 and 24.
4725 (thanks to Vincent Arkesteijn)
4726 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4727 type when called with 1 argument; PEEK-CHAR checked type of
4728 PEEK-TYPE only after having read first character from a
4729 stream. (reported by Peter Graves)
4730 * bug fix: the garbage collector now has much better locality
4731 behaviour, and in particular no longer treats all memory as being
4732 exhausted when many small objects point to each other in a deeply
4734 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4735 recognized as being TYPEP their class.
4736 * bug fix: the PUSHNEW documentation string has been corrected.
4737 (thanks to Vincent Arkesteijn)
4738 * bug fix: defaulting of the value for the last of an atypically
4739 large number of multiple values being bound was not being
4740 performed correctly on the Alpha or PPC platforms
4741 * optimization: implemented multiplication as a modular
4742 (UNSIGNED-BYTE 32) operation on the x86 backend.
4743 * optimization: SEARCH on simple-base-strings can now be open-coded.
4744 (see also contrib/compiler-extras.lisp for inspiration for
4745 teaching the compiler about the Boyer-Moore algorithm).
4746 * value, returned by MAX (and MIN) called with several EQUALP, but
4747 not EQL, arguments now does not depend on compiler settings.
4748 * fixed some bugs revealed by Paul Dietz' test suite:
4749 ** in stack analysis liveness information is propagated from
4750 non-local entry points.
4751 ** pathwise CAST removing failed when the CAST node did not start
4753 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4754 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4756 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4757 host is already defined.
4758 ** RENAME-FILE works on streams instead of signalling an internal
4760 ** PEEK-CHAR uses the current readtable when determining whether
4761 or not a character is whitespace.
4762 ** MERGE-PATHNAMES handles the case when the pathname does not
4763 specify a name while the default-pathname specifies a version.
4764 ** Pathnames now stand a better chance of respecting print/read
4766 ** Attempting to use standardized file system operators with a
4767 pathname with invalid :DIRECTORY components signals a
4769 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4771 ** DIRECTORY on logical pathnames is more correct.
4772 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4773 signal a TYPE-ERROR if their argument is not a stream.
4774 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4775 designator argument does not designate a stream.
4776 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4777 examining the synonym.
4778 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4780 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4781 element-type larger than ([UN]SIGNED-BYTE 32).
4783 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4784 * When built with the :SB-FUTEX feature, threaded builds now take
4785 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4786 for faster/more reliable mutex and condition variable support.
4787 * Incompatible change (but one you probably shouldn't have been using
4788 anyway): the interface and code for arbitrating between multiple
4789 threads in the same user session has been redesigned.
4790 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4791 error when called without an explicit environment argument.
4792 (thanks to Nikodemus Siivola)
4793 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4794 confused about their position. (thanks to Adam Warner and Gerd
4796 * bug fix: Pretty printing backquoted forms with unquotations in the
4797 argument list position of various code constructs such as LAMBDA
4798 now works correctly. (reported by Paul Dietz)
4799 * bug fix: Pretty printing unquotations no longer loses all
4800 stream position information.
4801 * optimization: performance of string output streams is now less
4802 poor for multiple small sequence writes.
4803 * optimization: performance of CSUBTYPEP in the presence of complex
4804 expressions involving CONS and NOT many times has been improved.
4805 (reported by Paul Dietz)
4806 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4808 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4809 streams for the REPL, for the debugger, and so on. (thanks to
4811 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4812 * fixed some bugs revealed by Paul Dietz' test suite:
4813 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4814 is ignored if it is too small, rather than propagating through
4815 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4816 ** extremely complex negations of CONS types were not being
4817 sufficiently canonicalized, leading to inconsistencies in
4819 ** VALUES tranformer lost derived type.
4821 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4822 * fixed a bootstrapping bug: the build process no longer assumes
4823 that the various BOOLE-related constants have the same value in
4824 host and target lisps. (noted by Paul Dietz' test suite on an
4825 SBCL binary built from CLISP)
4826 * The system can now be dynamically linked on the MIPS platform,
4827 which enables dynamic loading of foreign code from Lisp. (thanks
4828 to Ralf Baechle for discussions on the MIPS ABI)
4829 * The system now records debugging information for its own source
4830 files in a filesystem-position-independent manner, relative to
4831 the "SYS" logical host.
4832 * fixed a compiler bug: MV-LET convertion did not check references
4833 to the "max args" entry point. (reported by Brian Downing)
4834 * tweaked disassembly notes to be less confident about proclaiming
4835 some instruction as an LRA. (thanks to Brian Downing)
4836 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4837 now each have their own history, command character, and other
4838 characteristics. (thanks to David Lichteblau)
4839 * fixed some bugs revealed by Paul Dietz' test suite:
4840 ** compiler failure in compiling LOGAND expressions including a
4842 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4843 shift greater than 32.
4844 ** FLUSH-DEST did not mark blocks for type check regeneration.
4845 ** HANDLER-CASE failed to accept declarations in handler clauses
4846 in some circumstances.
4848 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4849 * New code in contrib/sb-introspect (still probably not entirely
4850 stable yet) provides some support for smart Lisp development
4851 environments like SLIME.
4852 * The conditions signalled for errors occurring when loading .fasl
4853 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4854 in a way which should help ASDF recover gracefully.
4855 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4856 stuff has been cleaned up. If you code contrib/ stuff, this might
4857 affect you, and you can look at contrib/README, contrib/STANDARDS,
4858 and/or the 0.8.4.27 diff to check.
4859 * In full calls the compiler now does not generate checks for declared
4860 argument types for all arguments.
4861 * various threading fixes
4862 ** and some experimental patches which didn't make it into
4863 the main tree for this release, but which are shipped in
4864 contrib/experimental-thread.patch as a possible fix for some
4865 failures (deadlock, spinning...) in GC-intensive multithreaded
4867 * fixed PPC build problem (source code incompatibility of different
4868 library versions): added offsetof() hackery which attempts to divine
4869 where glibc maintainers put uc_mcontext today
4870 * fixed bug 282: compiler does not trust type assertions while passing
4871 arguments to a full call.
4872 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4873 &OPTIONAL VALUES type parameter.
4874 * fix bug 214: algorithm for noting rejected templates is now more
4875 similar to that of template seletion. (also reported by rydis on
4877 * fixed bug 141b: printing backquoted information readably and prettily
4878 inserts a space where necessary.
4879 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4880 (CHARACTER 10) are now reported as errors, rather than propagated
4881 as unknown types. (reported by piso on #lisp)
4882 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4883 with values NIL and :ERROR. (thanks to Milan Zamazal)
4884 * fixed bug 191c: CLOS now does proper keyword argument checking as
4885 described in CLHS 7.6.5 and 7.6.5.1.
4886 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4887 longer raise an error; further, using a list as a for-as-arithmetic
4888 counter now raises a meaningful error.
4889 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4890 now understood by sequence creation functions such as MAKE-SEQUENCE
4892 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4893 a STRING-INPUT-STREAM.
4894 * compiler enhancement: SIGNUM is now better able to derive the type
4896 * type declarations inside WITH-SLOTS are checked. (reported by
4898 * fixed some bugs revealed by Paul Dietz' test suite:
4899 ** incorrect optimization of TRUNCATE for a positive first
4900 argument and negative second.
4901 ** compiler failure in let-convertion during flushing dead code.
4902 ** compiler failure while deriving type of TRUNCATE on an
4903 interval, containing 0.
4904 ** ASH of a negative bignum by a negative bignum count now returns
4906 ** intersection of CONS types now canonicalizes properly, fixing
4907 inconsistencies in SUBTYPEP.
4909 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4910 * incompatible change: The --disable-debugger command line
4911 option now clobbers the debugger at a more fundamental
4912 level, by redefining #'INVOKE-DEBUGGER instead of by
4913 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4914 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4915 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4916 enter the debugger REPL and then suffer recursive errors
4917 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4918 while under the new system, BREAK in --disable-debugger mode
4919 terminates the system just as an unhandled error would.
4920 * fixed compiler performance when processing loops with a step >1;
4921 * bug fix: DOCUMENTATION now retrieves generic function
4922 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4923 support has been systematized, and now supports the methods
4924 specified by ANSI, along with a default method and a method for
4925 slot documentation. (reported by Nathan Froyd)
4926 * bug fix: effective methods associated with a generic function are
4927 no longer cached over a change of that generic function's method
4928 combination. (reported by Andreas Fuchs)
4929 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4930 names a non-existent directory. (thanks to Andreas Fuchs)
4931 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4932 the PPC platform, lead to stack corruption; this has been fixed.
4933 (reported by Rainer Joswig)
4934 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4935 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4936 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4937 arithmetic in general, is now much more reliable on the PPC
4939 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4940 platform now returns the right answer.
4941 * optimization: restored some effective method precomputation in
4942 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4943 precomputation is now tunable.
4944 * optimization: compiler-internal data structure use has been
4945 reviewed, and changes have been made that should improve the
4946 performance of the compiler by about 20%.
4947 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4948 simple-base-strings and simple-bit-vectors is improved.
4949 * optimization: the optimization of 32-bit logical and arithmetic
4950 functions introduced in version 0.8.3 on the x86 has been
4951 implemented on the mips, ppc and sparc platforms; an
4952 implementation of the same facility, but for 64-bit arithmetic,
4953 has been added for the alpha.
4954 * microoptimization: the compiler is better able to make use of the
4955 x86 LEA instruction for multiplication by constants.
4956 * bug fix: in some situations compiler did not report usage of
4957 generic arithmetic in (SPEED 3) policy.
4958 * bug 145b fix: compiler used wrong type specifier while converting
4959 MEMBER-types to numeric.
4960 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4962 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4963 index argument now works properly on the Alpha platform.
4964 * bug fix: floating point exception treatment on the Alpha platform
4966 * bug fix: FILE-POSITION works much better on string input and
4967 output streams. (thanks to Nikodemus Siivola)
4968 * bug fix: many threading/garbage collection symptoms sorted.
4969 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4970 might be pseudo-atomic.
4971 * internal change: Stopping for GC is now done with signals not
4972 ptrace. GC is now done in whichever thread wanted it, instead of
4974 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4976 * bug fix: result form in DO is not contained in the implicit
4978 * incompatible change: ICR structure is changed; the value part of
4979 CONTINUATION is now called LVAR; corresponding functions are
4980 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4981 * added type deriver for ISQRT (thanks to Robert E. Brown).
4982 * bug fix: better support for loading from the command line when an
4983 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4985 * fixed some bugs revealed by Paul Dietz' test suite:
4986 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4987 ** ROUND and FROUND now give the right answer when given very
4988 small float arguments.
4989 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4991 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4992 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4993 ** LCM should return a non-negative integer.
4994 ** PARSE-INTEGER returned the index of a terminator instead of the
4995 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4996 ** PARSE-INTEGER returned an incorrect index being applied to a
4998 ** LCM with two arguments of 0 returns 0 rather than signalling
5000 ** unsigned addition of a 32-bit constant with the high bit set no
5001 longer causes an internal compiler error on the x86.
5002 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
5003 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
5004 with negative last argument.
5005 ** byte specifiers with zero size and position no longer cause
5006 an error during type derivation.
5007 ** bignum multiplication on the Alpha platform now returns the
5009 * porting: The system now builds on SuSE AMD64, although it still
5010 generates a 32-bit binary.
5011 * .fasl file incompatibility: The fasl file version number has
5012 been incremented (because of the changes to internal compiler
5013 data structures referred to above).
5015 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
5016 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
5017 more accurately, on the Darwin kernel running on PowerPC hardware.
5018 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
5019 * Compiler code deletion notes now signal a condition of type
5020 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
5021 an associated MUFFLE-WARNING restart.
5022 * The compiler now performs limited argument count validation of
5023 constant format strings in FORMAT, and where appropriate in ERROR,
5024 CERROR and WARN. (thanks to Gerd Moellmann)
5025 * New ASDF-INSTALL contrib can be used for automatic download and
5026 installation of third-party Lisp code from CCLAN or other sites
5028 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
5029 which forces another thread to execute a function supplied by the
5031 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
5032 now accept and act upon their :ELEMENT-TYPE keyword argument.
5033 (reported by Martin Atzmueller, Edi Weitz)
5034 * bug fix: FILE-POSITION now accepts position designators up to
5035 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
5036 is the greater. (thanks to Patrik Nordebo)
5037 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
5038 Kalle Olavi Niemitalo)
5039 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
5040 printable. (reported by Eric Marsden)
5041 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
5042 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
5043 * x86 bug fix in control stack exhaustion checking: now shows backtrace
5044 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
5045 (thanks to Stig Sandoe)
5046 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
5047 UNREAD-CHAR now correctly includes the unread character in the
5048 target sequence. (thanks to Gerd Moellmann)
5049 * bug fix in threaded builds: the system can now be suspended and
5050 resumed by shell job control with minimal disruption.
5051 * bug fixes in times and timezones >2038AD
5052 * better handling of "where is GNU make?" problem in build scripts
5053 (thanks to Nikodemus Siivola)
5054 * new optimization: inside a named function any reference to a
5055 function with the same name is considered to be a self-reference;
5056 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
5057 optimization quality.
5058 * new optimization on x86: logical functions and + now have
5059 optimized (UNSIGNED-BYTE 32) versions, which are automatically
5060 used when the result is truncated to 32 bits.
5061 * VALUES declaration is partially enabled.
5062 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
5063 * fixed some bugs revealed by Paul Dietz' test suite:
5064 ** The system now obeys the constraint imposed by
5065 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
5066 types form a lattice under type intersection.
5067 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
5068 ** ASSOC now ignores NIL elements in an alist.
5069 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
5070 and (1+ MOST-POSITIVE-FIXNUM) answers.
5071 ** The addition of a method with invalid qualifiers to a generic
5072 function does not cause an error to be signalled immediately;
5073 a warning is signalled, and the error is generated only on
5074 calling the generic function.
5075 * changed .fasl file version number, in part to add type codes for
5076 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
5077 obscure ANSI requirements
5079 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
5080 * fixed bug 148: failure to inline-expand a local function left
5081 garbage, confusing the compiler.
5082 * fixed bugs 3cd: structure slot readers perform type check if the
5083 slot can have an invalid value (i.e. it is either not initialized
5084 or can be written with a less specific slot writer).
5085 * bug fix: the compiler now traps array references to elements off
5086 the end of an array; previously, the bounds checking in some
5087 circumstances could go off-by-one.
5088 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
5090 * type declarations for array element types now obey the description
5091 on the CLHS page "Declaration TYPE", as per discussions on
5092 sbcl-help around 2003-05-08. This means that a declaration
5093 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
5094 declaration, all references to BAR will be asserted or assumed
5095 (with THE, so dependent on compiler policy) to involve objects of
5096 type FOO. Note that no such declaration is implied in
5097 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
5098 * declared types of functions from the "Conditions"
5099 chapter. (reported by Paul Dietz)
5100 * bug fix: CERROR accepts a function as its first argument.
5101 * bug fix: NTH an NTHCDR accept a bignum as index
5102 arguments. (reported by Adam Warner)
5103 * optimization: character compare routines now optimize comparing
5104 against a constant character. (reported by Gilbert Baumann)
5105 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
5106 argument now works properly on the MIPS platform.
5107 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
5108 * repeated evaluation of the same DEFSTRUCT, a slot of which is
5109 declared to have a functional type, does not cause an error
5111 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
5112 many :DEFAULT-INITARGS. (reported by Istvan Marko)
5113 * fixed bug: if last continuation of a deleted block has a
5114 destination, this destination should be deleted too. (reported by
5116 * fixed a bug in the bootstrap process: the host compiler's values
5117 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
5118 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
5119 test case from Patrik Nordebo)
5120 * improved the ability of the disassembler on the PPC platform to
5121 provide helpful disassembly notes.
5122 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
5123 the class in more cases than previously.
5124 * bug fix: FILE-POSITION now understands :START and :END for
5125 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
5126 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
5127 8) data. (thanks to David Lichteblau)
5128 * bug fix: it is possible to add a method to a generic function
5129 without lambda list.
5130 * bug fix: reader failed to signal END-OF-FILE inside an
5131 object representation. (reported by Nikodemus Siivola)
5132 * fixed some bugs revealed by Paul Dietz' test suite:
5133 ** LAST and [N]BUTLAST should accept a bignum.
5134 ** condition slot accessors are methods.
5135 ** (VECTOR NIL) is a subtype of STRING.
5137 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
5138 * minor incompatible change: some nonsensical specialized lambda
5139 lists (used in DEFMETHOD) which were previously ignored now signal
5141 * minor incompatible change: the system is now aware of the types of
5142 variables in the COMMON-LISP package, and will signal errors for
5143 most violations of these type constraints (where previously they
5144 were silently accepted).
5145 * minor incompatible change: COMPILE-FILE now uses the freedom
5146 afforded (ANSI 3.2.2.3) to use derived function types for
5147 functions defined in the same file. This also permits the system
5148 to warn on static type mismatches and function
5149 redefinition. (Currently it does not work with high DEBUG level.)
5150 * minor incompatible change: VALUES declaration is disabled.
5151 * When issuing notes, the compiler now signals a condition of type
5152 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
5153 restart for use in user handlers. It is expected that the
5154 COMPILER-NOTE condition will eventually become a condition
5155 supertype to a hierarchy of note types, which will then be
5156 handleable in a similar fashion. However, at the moment, no such
5157 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
5158 but it's an implementation detail, not a classification for the
5160 * Changes in type checking closed the following bugs:
5161 ** type checking of unused values (192b, 194d, 203);
5162 ** template selection based on unsafe type assertions (192c, 236);
5163 ** type checking in branches (194bc).
5164 * A short form of VALUES type specifier has ANSI meaning (it has
5165 increased the number of situations when SBCL cannot perform type
5167 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5168 keywords or constants is permissible.
5169 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5170 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5171 classes. (thanks to Antonio Martinez)
5172 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5173 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5174 argument to a pretty-print stream. Instead, it leaves any such
5175 operations to DESCRIBE-OBJECT methods.
5176 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5178 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5179 lambda lists. (thanks to David Lichteblau)
5180 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5181 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5182 (thanks to Gerd Moellmann)
5183 * fixed bug 246: increased compilation speed of long
5184 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5186 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5188 * DEFCONSTANT now throws a condition of type
5189 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5190 constant to a non-EQL value; CONTINUE and ABORT restarts
5191 respectively change and preserve the value.
5192 * fixed bug 63: The code walker, part of the implementation of CLOS,
5193 is now better at handling symbol macros.
5194 * bug fix: There is no longer an internal implementation type named
5195 CL:LENGTH. (reported by Raymond Toy)
5196 * bug fix: In macro-like defining macros/special operators the
5197 implicit block does not enclose the lambda list.
5198 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5199 enclosed in parentheses) are not suitable as type specifiers, and
5200 their use properly signals an error now.
5201 * bug fix: An argument count mismatch for a type specifier in code
5202 being compiled no longer causes an unhandled error at compile
5203 time, but signals a compile-time warning.
5204 * fixed simple vector readable printing
5205 * bug fix: DESCRIBE takes more care over whether the class
5206 precedence list slot of a class is bound before accessing it.
5207 (reported by Markus Krummenacker)
5208 * bug fix: FORMATTER can successfully compile pretty-printer format
5209 strings which use variants of the ~* directive inside.
5210 * bug fix: SEARCH now applies its TEST predicate to the elements of
5211 the arguments in the correct order. (thanks to Wolfhard Buss)
5212 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5213 in type inference. (thanks to Robert E. Brown)
5214 * bug fix: Reading in symbols with an explicit package name of ""
5215 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5216 * fixed some bugs revealed by Paul Dietz' test suite:
5217 ** NIL is now allowed as a structure slot name.
5218 ** Arbitrary numbers, not just REALs, are allowed in certain
5219 circumstances in LOOP for-as-arithmetic clauses.
5220 ** Multiple class redefinitions before slot access no longer
5221 causes a type error.
5222 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5223 association between the name and a class.
5224 ** Generic functions with non-standard method-combination and over
5225 five methods all of which return constants no longer return NIL
5226 after the first few invocations. (thanks to Gerd Moellmann)
5227 ** CALL-NEXT-METHOD with no arguments now passes the original
5228 values of the arguments, even in the presence of assignment.
5229 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5231 ** DISASSEMBLE works with closures and funcallable instances.
5232 ** ADD-METHOD now returns the generic function, not the new method.
5233 ** FIND-METHOD signals an error if the lengths of the specializers
5234 is incompatible with the generic function, even if the ERRORP
5236 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5237 which its argument is a member.
5238 ** DEFCLASS only redefines the class named by its class-name
5239 argument if that name is the proper name of the class;
5240 otherwise, it creates a new class.
5241 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5242 of the UNBOUND-SLOT condition to the name of the slot.
5243 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5244 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5245 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5246 SLOT-MAKUNBOUND in the specified fashion.
5248 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5249 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5250 cross-compilation host. As a consequence, we can now bootstrap our
5251 way up to SBCL starting with a bare gcc toolchain and human-readable
5252 source code (first the source to CLISP, then the source to SBCL).
5253 * A contributed module containing a partial implementation of the
5254 simple-streams interface has been included. (thanks to Rudi
5256 * A contributed module implementing the RFC1321 Message Digest
5257 Algorithm, known as MD5, has been included.
5258 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5259 no longer has any effect, as the code controlled by this feature
5260 has been deleted. (As far as we know, no-one has ever built using
5261 this feature, and its semantics were confused in any case).
5262 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5263 work on conditions (as required by the ANSI specification),
5264 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5265 expected behaviour on conditions. Users should note, however,
5266 that such behaviour is not required by the ANSI specification,
5267 and so use of this behaviour may render their code unportable.
5268 * fixed some bugs revealed by Paul Dietz' test suite:
5269 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5271 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5272 ** SXHASH on condition objects no longer returns NIL.
5273 ** :ALLOCATION :CLASS slots are better treated; their values are
5274 updated on class redefinition, and initforms inherited from
5275 superclasses are applied.
5276 ** REMOVE-METHOD returns its generic function argument even when
5277 no method was removed.
5278 ** SHARED-INITIALIZE now initializes the values of the requested
5279 slots, including those with :ALLOCATION :CLASS.
5280 ** ALLOCATE-INSTANCE now works on structure classes defined via
5281 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5283 ** SLOT-EXISTS-P now works on conditions, as well as structures
5285 ** MAKE-LOAD-FORM now has the required methods on
5286 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5287 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5288 keyword, and now implements the SLOT-NAMES argument.
5289 ** methods with &OPTIONAL arguments no longer allow too many
5290 arguments to be passed in the call without error.
5291 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5292 option is consistent with the required arguments of the generic
5293 function lambda list.
5294 * bug fix: REQUIRE accepts a string designator. (Thanks to
5296 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5297 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5298 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5299 * bug fix: The compiler now checks for duplicated variables in macro
5301 * bug fix: SETQ on globals returns the correct value.
5302 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5303 not a COMPILER-ERROR (followed by some other strange error on
5304 choosing the CONTINUE restart).
5305 * bug fix: make.sh and friends are now more consistent in the way that
5306 they look for GNU "make".
5308 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5309 * experimental native threads support (on x86 Linux >=2.4 only).
5310 This is not compiled in by default: you need to add :SB-THREAD to
5311 the target features. See the "Beyond ANSI" chapter of the manual
5313 * fix for longstanding nonANSIism: The old distinction between
5314 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5315 The return value from CL:FIND-CLASS is now a CLOS class, and
5316 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5317 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5318 * An interface to the MetaObject Protocol, as described in Kiczales,
5319 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5320 MIT Press, 1991, is available from the SB-MOP package.
5321 * incompatible change: the SB-PCL package should now be considered
5322 a private implementation detail, and no longer a semi-private MOP
5324 * minor incompatible change: due to rearrangement for threads, the
5325 control stack and binding stack are now allocated at arbitrary
5326 addresses instead of being hardcoded per-port. Users affected by
5327 this probably have to be doing advanced things with shared
5328 libraries, and will know who they are.
5329 * minor incompatible change: Previously, all --eval forms used were
5330 processed with READ before any of them were processed with EVAL.
5331 Now each --eval form is processed with both READ and EVAL before
5332 the next --eval form is processed. (Thus package operations like
5333 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5334 work as the user might reasonably expect.)
5335 * minor incompatible change: *STANDARD-INPUT* is now only an
5336 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5338 * minor incompatible change: Y-OR-N-P is now character-oriented,
5339 not line oriented. Also, YES-OR-NO-P now works without errors.
5340 (thanks to Antonio Martinez)
5341 * sb-aclrepl module improvements: an integrated inspector, added
5342 repl features, and a bug fix to :trace command.
5343 * Known functions, which cannot be open coded by the backend, are
5344 considered to be able to check types of their arguments. (fixing
5345 a bug report by Nathan J. Froyd)
5346 * fixed a bug in computing method discriminating functions: It is
5347 now possible to define methods specialized on classes which have
5348 forward-referenced superclasses. (thanks to Gerd Moellmann)
5349 * fixed evaluation order in optional entries (reported by Gilbert
5351 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5352 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5353 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5354 required-by-AMOP NAME argument, as well as CLASS and
5355 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5356 * fixed bug 20: DEFMETHOD can define methods using names that are
5357 not the proper names of classes to designate class specializers.
5358 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5359 Unix file descriptors, instead of blowing up. (thanks to Antonio
5361 * Garbage collection refactoring: user-visible change is that a
5362 call to the GC function during WITHOUT-GCING will not do garbage
5363 collection until the end of the WITHOUT-GCING. If you were doing
5364 this you were probably losing anyway.
5365 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5366 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5367 TYPEP the latter but not the former.
5368 * The compiler issues a full WARNING for calls to undefined functions
5369 with names from the CL package.
5370 * MAP-INTO for a vector destination is open coded. (reported by
5371 Brian Downing on c.l.l)
5372 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5373 documentation string.
5374 * fixed some bugs revealed by Paul Dietz' test suite:
5375 ** COPY-ALIST now signals an error if its argument is a dotted
5377 ** Condition slots are now accessed more correctly in the presence
5378 of multiple initargs for a given slot.
5379 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5380 exclude restarts of the same name associated with a different
5382 ** DEFCLASS of forward-referenced classes with another
5383 forward-referenced class in the superclasses list no longer
5385 ** Condition slots are now initialized once each, not multiple
5386 times. (thanks to Gerd Moellmann)
5387 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5389 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5390 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5391 arguments contain duplicated elements.
5392 ** RESTART-CASE understands local macros.
5393 ** RESTART-CASE associates exactly its own restarts with a condition.
5394 ** ENDP in safe mode checks its argument to be of type LIST.
5395 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5396 in question is unbound.
5397 ** Optimized MAKE-INSTANCE functions no longer cause internal
5398 assertion failures in the presence of duplicate initargs.
5399 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5400 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5401 propagated even in the ctor optimized implementation of
5403 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5405 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5406 * a better implementation of SXHASH on (simple) bit vectors,
5407 measured both in execution speed and in distribution of results
5408 over the positive fixnums, has been installed. Likewise, a better
5409 implementation of EQUAL for simple bit vectors is now available.
5410 * fixed CEILING optimization for a divisor of form 2^k.
5411 * fixed bug 240 (emitting extra style warnings "using the lexical
5412 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5413 by Antonio Martinez)
5414 * fixed SXHASH, giving different results for NIL depending on type
5415 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
5416 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
5417 variable. (found by Rolf Wester)
5418 * SBCL does not ignore type declarations for special
5419 variables. (reported by rif on c.l.l 2003-03-05)
5420 * some bug fixes in contrib/sb-aclrepl/
5421 * fixed some bugs revealed by Paul Dietz' test suite:
5422 ** a bug in the CONS type specifier, whereby the CAR and CDR
5423 types got intertwined, has been fixed;
5424 ** the type system is now able to reason about the interaction
5425 between INTEGER and RATIO types more completely;
5426 ** APPEND, [N]REVERSE and NRECONC check that those their
5427 arguments, which must be proper lists, are really so;
5428 ** An array specialized to be unable to hold elements has been
5429 implemented, as required -- yes, really -- by ANSI;
5430 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5431 on malformed property lists;
5433 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5434 * incompatible packaging change: in line with Unix convention,
5435 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5436 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5437 * REQUIRE and PROVIDE are now optionally capable of doing something
5438 useful. See the documentation string for REQUIRE.
5439 * infrastructure for a managed SBCL contrib system: contributed
5440 modules in this release include:
5441 ** the ASDF system definition facility;
5442 ** an interface to the BSD Sockets API;
5443 ** an ACL-like convenience interface to the repl;
5444 (thanks to Kevin Rosenberg)
5445 ** an implementation of ROTATE-BYTE, with efficient implementation
5447 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5448 gives a closer approximation to the right answer than previously.
5449 (thanks to Raymond Toy)
5450 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5451 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5452 optional environment arguments, as required by ANSI.
5453 * fixed bugs in other functions taking environment objects, allowing
5454 calls with an explicit NIL environment argument to be compiled
5456 * fixed bug 228: primary return values from
5457 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5458 COMPILE or FUNCTION.
5459 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5460 :TYPE will no longer signal errors on innocuous objects.
5461 * fixed bug 231b: SETQ is better at respecting type declarations in
5462 the lexical environment.
5463 * fixed a bug in DEFCLASS: classes named by symbols with no or
5464 unprintable packages can now be defined.
5465 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5466 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5467 * fixed compiler failure related to checking types of functions.
5468 (reported by Robert E. Brown)
5469 * the compiler is now much more consistent in its error-checking
5470 treatment of bounding index arguments to sequence functions: in
5471 (SAFETY 3) code, errors will be signalled in almost all cases if
5472 invalid sequence bounding indices are passed to functions defined
5473 by ANSI to operate on sequences.
5474 * fixed a bug in the build procedure: documentation of SBCL-specific
5475 packages is now preserved and available in the final Lisp image.
5476 * lifted FDEFINITION lookup out of loops in the implementation of
5477 many list operations. (thanks to Robert E. Brown)
5478 * fixed a bug in the reader: the #n# reader macro now works for
5479 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5480 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5481 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5482 E. Brown and Tony Martinez respectively)
5483 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5484 SLOT-BOUNDP: in particular, it is now able to optimize them much
5485 better, and is now not vulnerable to having packages renamed.
5486 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5487 always called when a slot is not present in an instance. (thanks
5489 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5490 longer signal an error on unreading a character following EOF on
5491 the previous constituent stream. (thanks to Tony Martinez)
5492 * fixed some bugs revealed by Paul Dietz' test suite:
5493 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5494 not just nonnegative fixnums;
5495 ** the logical bit-array operators such as BIT-AND now accept an
5496 explicit NIL for their "opt-arg" argument (to indicate a
5497 freshly-consed result bit-array);
5498 ** ELT now signals an error on an invalid sequence index in safe
5500 ** the type system is now cleverer about negations of numeric
5501 types, and consequently understands the BIGNUM and RATIO types
5503 ** the type system is now cleverer about the interaction between
5504 INTEGER and RATIO types: while bugs still remain, many more
5505 cases are accurately computed;
5506 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5507 if it is in the last clause;
5508 ** CONSTANTLY now correctly returns a side-effect-free function in
5510 ** DECLARE is no longer treated as a special-operator; in
5511 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5512 * incremented fasl file version number due to the change in the
5513 DEFSTRUCT-SLOT-DESCRIPTION structure.
5515 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5516 * minor incompatible change: code processed by the "interpreter" or
5517 EVAL now has a compilation optimization policy of (DEBUG 2)
5518 (changed from (DEBUG 1)) to improve debuggability of interactive
5519 development, and to allow the use of the debug RETURN command in
5521 * an experimental implementation of the RETURN command for the
5522 debugger has been included. (thanks to Frederik Kuivinen)
5523 * fixed bug 62: constraints were not propagated into a loop.
5524 * fixed bug in embedded calls of SORT (reported and investigated by
5526 * fixed some bugs revealed by Paul Dietz' test suite:
5527 ** printing and reading of arrays with some dimensions having
5528 length 0 (thanks to Gerd Moellmann);
5529 ** BOA constructor with &AUX argument without a default value does
5530 not cause a type error;
5531 ** CONSTANTP now returns true for all self-evaluating objects.
5533 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5534 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5535 accessors that are related by inheritance, as specified in the
5536 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5537 Valtteri Vuorikoski)
5538 * The compiler is now able to inline functions that were defined in
5539 a complex lexical environment (e.g. inside a MACROLET).
5540 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5542 * Support for the upcoming FreeBSD-5.0 release has been included.
5543 (thanks to Dag-Erling Smorgrav)
5544 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5545 effect when it is not in a toplevel context.
5546 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5547 stand a better chance of being correct. (thanks to Gerd
5549 * fixed bug in COERCE, which now signals an error on coercing a
5550 rational to a bounded real type which excludes the expected
5552 * The compiler is now able to derive types more accurately from the
5553 COERCE and COMPILE functions.
5554 * fixed bug 223: functional binding is considered to be constant
5555 only for symbols in the CL package.
5556 * fixed bug 231: SETQ did not check the type of a variable being set
5557 (reported by Robert E. Brown)
5558 * A new optimization for MAKE-INSTANCE has been included, fixing
5559 various bugs (including relating to :ALLOCATION :CLASS slots and
5560 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5562 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5563 ** As required by ANSI, LOOP now disallows anonymous collection
5564 clauses such as COLLECT I in conjunction with aggregate boolean
5565 clauses such as THEREIS (= I 1);
5566 ** LOOP now signals an error when any variable is reused in the
5567 same loop (including the potentially useful construct analogous
5568 to WITH A = 1 WITH A = (1+ A);
5569 ** IT is only a special loop symbol within the first clause of a
5570 conditional loop clause;
5571 ** LOOP with a typed iteration variable over a hashtable now
5572 signals a type error iff it should.
5573 * fixed some other bugs revealed by Paul Dietz' test suite:
5574 ** FILE-STREAM now names the class previously known as FD-STREAM;
5575 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5576 argument) no longer signals an error;
5577 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5578 of the slot symbol, rather than using the current package
5579 ((:CONC-NAME "") continues to intern the slot's name in the
5581 * incremented fasl file version number, because of the incompatible
5582 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5583 of the new implementation of DEFINE-COMPILER-MACRO.
5585 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5586 * Support for building SBCL for MIPS platforms running in
5587 little-endian mode has now been checked in, and basic
5588 functionality on said platforms verified.
5589 * minor incompatible change: PCL now records the pathname of a file
5590 in which methods and the like are defined, rather than its
5592 * minor incompatible change: TRUENAME now considers the truename of
5593 a file naming a directory to be the pathname with :DIRECTORY
5594 component indicating that directory.
5595 * minor incompatible change: a NAMED clause in the extended form of
5596 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5597 reason for the previous behaviour is unclear.
5598 * more systematization and improvement of CLOS and MOP conformance
5599 in PCL (thanks to Gerd Moellman and Pierre Mai):
5600 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5602 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5603 primary methods with no specializers;
5604 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5606 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5607 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5608 FORWARD-REFERENCED-CLASSes; error reporting on
5609 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5611 ** SXHASH on CLOS instances now uses a slot internal to the
5612 instance to return different numbers on distinct instances,
5613 while preserving the same return value through invocations of
5615 ** DEFMETHOD signals errors when methods with longer incongruent
5616 lambda lists are added to generic functions;
5617 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5618 CLASS, as specified in AMOP;
5619 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5620 on the order returned by the primary method for classes of
5621 class STANDARD-CLASS;
5622 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5623 * fixed some bugs shown by Paul Dietz' test suite:
5624 ** DOLIST puts its body in TAGBODY;
5625 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5627 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5628 value producing form;
5629 ** if more variables are given to PROGV than values, extra
5630 variables are bound and made to have no value;
5631 ** NSUBSTITUTE on list arguments gets the right answer with
5633 ** ELT signals an error of type TYPE-ERROR when the index argument
5634 is not a valid sequence index;
5635 ** LOOP signals (at macroexpansion time) an error of type
5636 PROGRAM-ERROR when duplicate variable names are found;
5637 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5638 ** FUNCALL of special-operators now cause an error of type
5640 ** PSETQ now works as required in the presence of side-effecting
5641 symbol-macro places;
5642 ** NCONC accepts any object as its last argument;
5643 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5645 ** loop-for-as-package does not require a package to be explicitely
5647 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5649 * fixed bug 166: compiler preserves "there is a way to go"
5650 invariant when deleting code.
5651 * fixed bug 172: macro lambda lists with required arguments after
5652 &REST arguments now cause an error to be signalled. (thanks to
5654 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5655 bug. (thanks to Matthew Danish)
5656 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5658 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5659 arguments are lexically rebound. (thanks to Gerd Moellmann and
5661 * fixed bug 194: error messages are now more informative when there
5662 is no primary method applicable in a call to a generic
5663 function. (thanks to Gerd Moellmann)
5664 * fixed bug in command line argument checking (thanks to Julian
5666 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5667 (thanks to Matthew Danish)
5668 * incremented fasl file version number, because of the
5669 SXHASH-related changes in the layout of CLOS data structures
5671 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5672 * minor incompatible change: The runtime (the Unix executable named
5673 "sbcl") is now much pickier about the .core files it will load.
5674 Essentially it now requires .core files to descend from the same
5675 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5676 as the runtime does. (The intent is to prevent the crashes which
5677 can occur, and which can even be reported as mysterious failures,
5678 when people patch the sources or change the build parameters
5679 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5680 sbcl and .core files.)
5681 * fixed bug: VALUES-LIST is no longer optimized away.
5682 * fixed bug 142: The FFI conversion of C string values to Lisp
5683 string values no longer conses excessively. (thanks to Nathan
5684 Froyd porting Raymond Toy's fix to CMU CL)
5685 * began to systematize and improve MOP conformance in PCL (thanks to
5686 Nathan Froyd, Gerd Moellman and Pierre Mai):
5687 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5689 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5690 ** FINALIZE-INHERITANCE is now called on class finalization;
5691 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5692 argument precedence order.
5693 * fixed bug 202: The compiler no longer fails on functions whose
5694 derived types contradict their declared type.
5695 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5696 so it can be non-toplevel.
5697 * The fasl file version number has changed (because of the new
5698 implementation of DEFMACRO).
5699 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5700 safe code, that any length requirement by their type-specifier
5701 argument is valid. The exceptions to this are described in bug
5703 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5704 functions now check the types of their inputs as required by ANSI.
5705 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5706 introduced symbol is DECLAREd to be SPECIAL.
5707 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5708 * fixed bug: :COUNT argument to sequence functions may be negative
5709 * fixed bug: body of DO-SYMBOLS may contain declarations
5710 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5711 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5712 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5713 symbol macro only once
5714 * fixed printing of call frame when argument list is unavailable
5715 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5716 * compiler no longer signals WARNING on unknown keyword
5719 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5720 * A beta-quality port to the mips architecture running Linux,
5721 based on the old CMUCL backend, has been made. It has been tested
5722 on a big-endian kernel, and works sufficiently well to be able to
5723 rebuild itself; it has not been tested in little-endian mode.
5724 * fixed an inconsistency between gencgc.c and purify.c which made
5725 dumping/loading .core files unreliable
5726 * fixed bug 120a: The compiler now deals correctly with IFs where
5727 the consequent is the same as the alternative, instead of
5728 misderiving the return type. (thanks to Alexey Dejneka)
5729 * fixed bug 113: Logical pathnames are now dumpable (the logical
5730 host is resolved at load-time, throwing an error if it is not
5732 * fixed bug 174: FORMAT's error message is slightly clearer when a
5733 non-printing character is used in a format directive.
5734 * fixed several bugs in compiler checking of type declarations, i.e.
5735 violations of the Python "declarations are assertions" principle
5736 (thanks to Alexey Dejneka)
5737 * fixed several bugs in PCL's error checking (thanks to Gerd
5739 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5741 * fixed bug in compilation of functions as first class values
5742 (thanks to Antonio Martinez-Shotton)
5743 * The compiler's handling TYPE-ERRORs which it can prove will
5744 inevitably happen at runtime has been cleaned up and corrected
5745 in several ways. (thanks to Alexey Dejneka)
5746 * improved argument type checking for various basic arithmetic
5747 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5748 lavished on them in the past that they can be compiled in many
5749 ways in different special cases
5750 * fixed bug 181: compiler checks validity of user supplied type
5752 * cleaned up code flushing in optimization: Function calls which
5753 should signal errors for safety purposes (e.g. which ANSI says
5754 should signal errors when their arguments are of incorrect type)
5755 are no longer optimized away.
5756 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5757 * incremented fasl file version number, because changes in the
5758 implementation of sequence functions like COERCE caused
5759 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5760 in old inline expansions) to become undefined. (Actually these
5761 changes were later undone, so we might very well be binary
5762 compatible with 0.7.7 after all, but leaving the version number
5763 incremented seemed like the simplest and most conservative
5766 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5767 * An alpha-quality port to the parisc architecture running Linux,
5768 based on the old CMUCL backend, has been made. This, even more so
5769 than the other backends, should be considered still a work in
5770 progress; known problems include that the Linux kernel in 64-bit
5771 mode does not propagate the correct sigcontext structure to
5772 userspace, and consequently SBCL on a parisc64 kernel will not
5774 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5775 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5776 suppressed.) Also now that the compiler is looking at declarations
5777 in the environment, it checks optimization declarations as well,
5778 and suppresses inlining when (> DEBUG SPEED).
5779 * More fixes have been made to treatment of floating point exception
5780 treatment and other Unix signals. In particular, floating point
5781 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5782 * The detection and handling of control stack exhaustion (infinite
5783 or very deeply nested recursion) has changed. Stack exhaustion
5784 detection is now done by write-protecting pages at the OS level
5785 and applies at all optimization settings; when found, a
5786 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5787 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5788 be caught using IGNORE-ERRORS.
5789 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5790 correctly when transforming recursive LABELS functions to LETs.
5791 (thanks to Alexey Dejneka)
5792 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5793 that are names of constants or global variables.
5794 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5795 alien routines with docstrings.
5796 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5797 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5799 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5800 (thanks to Eric Marsden)
5801 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5802 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5803 * Bug fix: The SPARC backend can now compile functions involving
5804 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5805 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5806 to a functions expecting a PATHNAME-DESIGNATOR.
5807 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5808 lambda lists. (thanks to Alexey Dejneka)
5809 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5810 functions so that EXPORTing the name of the class doesn't cause
5811 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5812 to Antonio Martinez for reporting this)
5813 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5814 constant-folded without failing an assertion. (thanks to Einar
5815 Floystad Dorum for reporting this)
5816 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5817 types are now dealt with more correctly by the compiler.
5818 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5819 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5820 behaviour analogous to RENAME-FILE. This puts its behaviour more
5821 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5823 * The fasl file version number has changed again. (because of the
5824 bug fix involving the names of PCL MAKE-INSTANCE functions)
5826 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5827 * bug fix: Floating point exceptions are treated much more
5828 consistently on the x86/Linux and PPC/Linux platforms.
5829 * Array initialization with :INITIAL-ELEMENT is now much faster for
5830 cases when the compiler cannot open code the array creation, but
5831 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5832 array accesses have also seen a speed increase.
5833 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5834 specified. (This was at the root of some bad interactions between
5835 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5837 * bug fix: Internal error arguments for undefined functions are now
5838 computed correctly on the PPC/Linux platform.
5839 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5840 Raymond Toy's patch for CMU CL)
5841 * Support for the Solaris 9 operating environment has been included
5842 (thanks to Daniel Merritt)
5843 * A very ugly but hopefully complete draft of the missing FFI chapter
5844 of the manual has been created by reformatting the corresponding
5845 CMU CL manual chapter into (currently very ugly and incoherent)
5846 DocBook and bringing it up to date for SBCL behavior. Thus, the
5847 manual is now essentially complete, at least by my extreme
5848 once-and-only-once standards, whereby it's acceptable to refer to
5849 the doc strings of SB-EXT functions as the primary documentation.
5850 * The fasl file version number has changed again, due to cleanup of
5851 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5852 is no longer a static symbol.)
5854 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5855 * SBCL now builds with OpenMCL (version 0.12) as the
5856 cross-compilation host; also, more progress has been made toward
5857 bootstrapping under CLISP.
5858 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5860 * bug 158 fixed: The compiler can now deal with integer loop
5861 increments different from 1; fixing this turned out also to fix
5863 * bug 169 fixed: no more bogus warnings about using lexical bindings
5864 despite the presence of perfectly good SPECIAL declarations (thanks
5865 to David Lichteblau)
5866 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5867 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5868 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5870 * bug 180 fixed: Method combination specifications no longer ignore
5871 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5872 * bug fix: Structure type predicate functions now check their argument
5873 count as they should.
5874 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5875 correctly. (thanks to Pierre Mai)
5876 * minor incompatible change: The --noprogrammer option is deprecated
5877 in favor of the new --disable-debugger option, which is very similar.
5878 (The major difference is that it takes effect at a slightly different
5879 time at startup, causing handling of errors in --sysinit and
5880 --userinit files will be affected differently.) The
5881 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5882 been added to allow this functionality to be controlled from ordinary
5883 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5884 maintainers, who might want to run non-interactive scripts to
5885 build SBCL cores which will later be used interactively.)
5886 * minor incompatible change: The LOAD function no longer, when given
5887 a wild pathname to load, loads all files matching that pathname.
5888 Instead, an error of type FILE-ERROR is signalled.
5890 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5891 * bug 147 fixed: The compiler preserves its block link/count
5892 invariants more correctly now so that it doesn't crash. (thanks
5894 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5896 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5897 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5898 no-value-for-this-character as NIL (as specified by ANSI).
5899 * HOST-NAMESTRING on physical pathnames now returns a string that is
5900 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5901 (thanks to Christophe Rhodes)
5902 * The Alpha port handles icache flushing more correctly. (thanks to
5904 * More progress has been made toward bootstrapping under CLISP. (thanks
5905 to Christophe Rhodes)
5906 * The fasl file format has changed again, because dynamic loading
5907 on OpenBSD (which has non-ELF object files) motivated some cleanups
5908 in the way that foreign symbols are transformed and passed around.
5909 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5910 is no longer treated as whitespace by the reader, but instead as
5911 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5912 |A
\7fB|, instead of A as it used to.
5914 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5915 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5916 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5917 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5918 this as of 0.7.1.45, but was left out of the previous news section
5919 (thanks to Dan Barlow)
5920 * SBCL now runs on the Solaris operating system on SPARC architectures
5921 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5922 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5923 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5924 * SPARC backend cleanups, allowing builds of cores optimized for V8
5925 and V9 SPARCS, and also emission of code targeted to a particular
5926 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5928 * SBCL is closer to bootstrapping under CLISP, thanks to various
5929 fixes by Christophe Rhodes.
5930 * The fasl file format has changed again, to allow the compiler's
5931 INFO database to support symbol macros.
5932 * The user manual (in doc/) is formatted into HTML more nicely.
5933 (thanks to coreythomas)
5934 * The system is smarter about SUBTYPEP relationships, especially
5935 those involving NOT types (including types such as ATOM which are
5936 represented internally using NOT types). Thus SUBTYPEP is less
5937 likely to return (VALUES NIL NIL) in general, and in particular
5938 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5940 * The fasl file format has changed again, because the internal
5941 representation of types now includes a new slot to support the new
5942 SUBTYPEP-of-NOT-types logic.
5943 * (not a change in the main branch of SBCL, but a related prototype
5944 which can hopefully be merged into the main branch of SBCL in the
5945 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5946 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5947 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5948 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5949 dispatch macro character combinations. (thanks to Alexey Dejneka)
5950 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5951 that superficially look like logical namestrings correctly.
5952 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5954 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5955 default supplied-p) for &optional and &key arguments. (thanks to
5958 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5959 * incompatible change: The compiler is now less aggressive about
5960 tail call optimization, doing it only when (> SPACE DEBUG) or
5961 (> SPEED DEBUG). (This is an incompatible change because there are
5962 programs which relied on the old CMU-CL-style behavior to optimize
5963 away their unbounded recursion which will now die of stack overflow.)
5964 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5965 for non-GENCGC systems has been increased to 20M (since that
5966 seems much closer to the likely performance optimum for modern
5967 systems than the old 4M value was)
5968 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5969 and *DEBUG-PRINT-LEVEL*
5970 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5971 of CMU CL's support for SPARC, and various endianness and other
5972 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5973 * new syntactic sugar for the Unix command line: --load foo.bar is now
5974 an alternate notation for --eval '(load "foo.bar")'.
5976 ** The system now detects stack overflow and handles it gracefully,
5977 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5978 optimization settings. (This is a good thing in general, and
5979 its introduction in this version should be particularly timely
5980 for anyone whose code fails because of suppression of tail
5982 ** The system now hunts for the C variable "environ" in a more
5983 devious way, to avoid segfaults when the C library version differs
5984 between compile time and run time. (thanks to Christophe Rhodes)
5985 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5986 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5987 ** The compiler no longer issues bogus style warnings for undefined
5988 classes in the same source file as the DEFCLASSes which defined
5989 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5991 ** fixes in CONDITION class precedence list for undefined function
5992 errors (thanks to Alexei Dejneka)
5993 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5994 correctly. (thanks to Dan Barlow)
5995 ** portability fixes aiming at bootstrapping under CLISP (thanks
5996 to Dave McDonald and Christophe Rhodes)
5997 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5998 ** fixes in type translation and and type inference (thanks to
6000 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
6001 ** various fixes in the new ports (thanks to Dan Barlow)
6002 * several changes related to debugging:
6003 ** suppression of tail recursion, as noted above
6004 ** stack overflow detection, as noted above
6005 ** The default implementation of TRACE has changed. :ENCAPSULATE T
6006 is now the default. (For some time encapsulation has been more
6007 reliable than the breakpoint-based :ENCAPSULATE NIL
6008 implementation, at least on X86 systems; and I just noticed that
6009 encapsulation also seems closer to the spirit of the ANSI
6012 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
6014 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
6015 up properly again. (There was a packaging bug in 0.7.0 which
6016 left their definitions in SB-SYS::LOAD-FOREIGN and
6017 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
6018 vital for most things which interface to C-level interfaces,
6019 like extensions working with sockets or databases or
6020 Perl-compatible regexes or whatever, and the need to fix
6021 this bug is the main reason that 0.7.1 was released so
6023 ** DEFGENERIC is now choosier about the methods it redefines, so that
6024 reLOADing a previously-LOADed file containing DEFGENERICs does
6025 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
6026 cycle now works as it should. (thanks to Alexey Dejneka)
6027 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
6028 fixed by Christophe Rhodes. (He actually submitted this patch
6029 months ago, and I delayed until after 0.7.0.)
6030 ** Bug 111 (internal compiler confusion about runtime checks on
6031 FUNCTION types) was fixed by Alexey Dejneka.
6032 * Some internal cleanups (getting rid of variables which aren't
6033 needed now that the byte interpreter is gone) caused the fasl
6034 file format number to change again.
6036 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
6037 * major incompatible change: The default fasl file extension, i.e. the
6038 default extension for files produced by COMPILE-FILE, has changed
6039 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
6041 ** There are many changes in the implementation of the compiler.
6042 SBCL is now essentially a compiler-only implementation of ANSI
6043 Common Lisp. EVAL still "interprets" a few special cases, but
6044 almost all the interesting cases are handled by creating
6045 a LAMBDA expression, calling COMPILE on it, then calling
6046 FUNCALL on the result.
6047 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
6048 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
6049 Since the code is newer, there might still be some new bugs
6050 (though not as many as before Martin Atzmueller's fixes:-). But
6051 the new code is substantially simpler and clearer, and hopefully
6052 any remaining bugs will be simpler, less fundamental, and more
6053 fixable then the bugs in the old code.
6054 ** The revised compiler is still a little unsteady on its feet.
6056 *** The debugging information it produces (particularly the names
6057 of FUNCTION objects) is sometimes much less useful than what
6058 the old compiler produced.
6059 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
6060 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
6061 within a MACROLET) has been temporarily weakened.
6062 ** There are new compiler optimizations for various functions:
6063 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
6064 FIND-IF-NOT, POSITION-IF-NOT, and FILL
6065 *** the math functions TRUNCATE, FLOOR, and CEILING
6066 *** the function-of-all-trades COERCE
6067 Mostly these should be transparent, but there's one
6068 potentially-annoying problem (bug 117): when the compiler
6069 inline-expands a function and does type analysis on the result,
6070 it can create control paths which have type mismatches, and
6071 when it can't prove that those control paths aren't taken,
6072 it will issue WARNINGs about the type mismatches. This is
6073 a particular problem in practice for the new sequence functions.
6074 It's not clear how this should be fixed, and for now, a
6075 workaround is given in the entry for 117 in the BUGS file.
6076 ** (Because of the interaction between the two previous items --
6077 occasional inlining problems and new inline expansions -- some
6078 of the new sequence function optimizations won't really kick in
6079 completely until debugging information, and then inlining, are
6080 straightened out in some future version.)
6081 * minor incompatible changes:
6082 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
6083 DIRECTORY no longer implicitly promotes NIL slots of its
6084 pathname argument to :WILD. In particular, when you ask for the
6085 contents of a directory (which you used to be able to do without
6086 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
6087 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
6088 ** changes in behavior that ANSI explicitly defines to be
6089 implementation dependent:
6090 *** The new compiler-only implementation still conforms with ANSI,
6091 but acts a little different than before. Besides the obvious
6092 changes in performance tradeoffs (that the cost per form passed
6093 to EVAL has gone up, and the cost per form executed by EVAL
6094 has gone down), the behavior of the system changes a little
6095 because there are no longer any interpreted function objects.
6096 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
6097 e.g. doing COMPILE on the output of interactive DEFUN is
6099 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
6101 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
6102 has changed from (:CL) to NIL.
6103 *** The CHAR-NAME of unprintable ASCII characters which, unlike
6104 e.g. #\Newline and #\Tab, don't have names specified in the
6105 ANSI Common Lisp standard, is now based on their ASCII symbolic
6106 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
6107 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
6108 are no longer used for output.
6109 ** changes in internal implementation constants:
6110 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
6111 4 million. (If your application spends a lot of time GCing and
6112 you have a lot of RAM, you might want to experiment with
6113 increasing it even more.)
6114 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
6115 However, almost all old code should still continue to work without
6116 immediate update, as SB-C-CALL is now a (deprecated) nickname
6118 ** Old operator names in the style DEF-FOO are now deprecated in
6119 favor of new corresponding names DEFINE-FOO, for consistency with
6120 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
6121 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
6122 internal symbols, but a few supported extensions like
6123 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
6124 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
6125 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
6126 etc. as you get deeper into recursive calls to the debugger
6127 command loop, instead of the old "5]", "5]]", "5]]]"
6128 sequence. (I was motivated to do this when squabbles between
6129 ILISP and SBCL left me very deeply nested in the debugger. In the
6130 short term, this change will probably provoke more ILISP/SBCL
6131 squabbles, but hopefully it will be an improvement in the long run.)
6132 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
6133 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
6134 function, since declaiming return types involving aliens is
6135 (1) annoyingly messy to do by hand and (2) vital to efficient
6136 compilation of code which calls such functions.
6137 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
6138 longer reexported by the SB-EXT package. They're solely useful
6139 for alien code, so it seems more logical that you should get
6140 them from the SB-ALIEN package, not in SB-EXT.
6141 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
6142 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
6143 features. Instead, the code that they used to control is always
6144 built into the system.
6145 * many other bug fixes
6146 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
6147 advantage of the new EVAL-WHEN stuff and to clean them up in
6148 general, and they are now more ANSI-compliant in a number of
6149 ways. Martin Atzmueller is responsible for a lot of this.
6150 ** Besides the cleanups discussed above, Martin Atzmueller fixed
6152 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
6153 *** correct ERROR type for various file operations
6154 *** some fixes for Lisp streams
6155 *** DEFMETHOD syntax checking
6156 *** changing old weird representation of debug information as
6157 strings (which, among their other deficiencies, don't transform
6158 correctly when you rename packages, and don't change their
6159 print representation when you change things like *PACKAGE*
6160 and *PRINT-LENGTH*) to symbols and lists of symbols
6161 He also made several improvements and fixed several bugs in DESCRIBE.
6162 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6164 *** misbehavior of WRITE-STRING/WRITE-LINE
6165 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6166 and several other LOOP problems as well
6167 *** DIRECTORY when similar filenames are present
6168 *** DEFGENERIC with :METHOD options
6169 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6170 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6171 *** argument ordering in FIND with :TEST option
6172 *** mishandled package designator argument in APROPOS-LIST
6173 *** various problems in the backquote readmacro
6174 *** a bug in APROPOS
6175 *** probably some others that I'm not describing very well here,
6176 since the CVS log documents them by reference to sbcl-devel
6177 messages, and the SourceForge archives aren't working well.:-(
6178 ** Dan Barlow improved the Alpha port (and is making progress on the
6179 PPC port, for those of you who think different).
6180 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6181 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6182 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6183 continues to work on the SPARC port (for those of you in a position
6184 to look down upon our little PC-compatible boxes from a great height).
6185 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6186 and uses that copy, rather than the current dynamic value, when
6187 it's trying to decide whether to truncate output. Thus e.g.
6188 (let ((*print-lines* 50))
6189 (pprint-logical-block (stream nil)
6191 (let ((*print-lines* 8))
6192 (print (aref possiblybigthings i) stream)))))
6193 should now truncate the logical block only at 50 lines, instead of
6194 often truncating it at 8 lines, as it did before.
6195 * The doc/cmucl/ directory, containing old CMU CL documentation
6196 from the time of the fork, is no longer part of the base system.
6197 SourceForge has shut down its anonymous FTP service, and with it
6198 my original plan for distributing the old CMU CL documentation
6199 there. For now, if you need these files you can download an old
6200 SBCL source release and extract them from it.
6201 * The fasl file version number changed again, for dozens of reasons,
6202 some of which are apparent above.
6204 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6205 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6206 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6207 patch, so that DISASSEMBLE output is much nicer.
6208 * The code in the SB-PROFILE package now seems reasonably stable.
6209 I still haven't decided what the final interface should look like
6210 (I'd like PROFILE to interact cleanly with TRACE, since both
6211 facilities use function encapsulation) but if you have a need
6212 for profiling now, you can probably use it successfully with
6213 the current CMU-CL-style interface.
6214 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6215 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6216 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6217 link now returns the dangling link itself, and for similar
6218 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6219 link itself. (In these cases the old code signalled an error and
6220 looped endlessly, respectively.) Thus, DIRECTORY now works even
6221 in the presence of dangling and cyclic symbolic links.
6222 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6223 is now a supported extension again, since the consensus on
6224 sbcl-devel was that it can be useful for ordinary development
6225 work, not just for debugging SBCL itself.
6226 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6227 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6228 that currently-defined functions might be redefined later with
6229 different return types.
6230 * Hash tables can be printed readably, as inspired by CMU CL code
6231 of Eric Marsden and SBCL code of Martin Atzmueller.
6232 * better error handling in CLOS method combination, thanks to
6233 Martin Atzmueller porting Pierre Mai's CMU CL patches
6234 * more overflow fixes for >16Mbyte I/O buffers
6235 * A bug in READ has been fixed, so that now a single Ctrl-D
6236 character suffices to cause end-of-file on character streams.
6237 In particular, now you only need one Ctrl-D at the command
6238 line (not two) to exit SBCL.
6239 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6241 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6242 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6243 does the right thing.
6244 * The implementation of some type tests, especially for CONDITION
6245 types, is now tidier and maybe faster, due to CMU CL code
6246 originally by Douglas Crosher, ported by Martin Atzmueller.
6247 * Some math functions have been fixed, and there are new
6248 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6249 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6250 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6251 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6252 likely to be built into sbcl-0.7.0.)
6253 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6254 CL, ported to SBCL by Martin Atzmueller)
6255 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6256 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6257 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6258 * There's a new slam.sh hack to shorten the edit/compile/debug
6259 cycle for low-level changes to SBCL itself, and a new
6260 :SB-AFTER-XC-CORE target feature to control the generation of
6261 the after-xc.core file needed by slam.sh.
6262 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6263 COMPILE-FILE is no longer supported, so that now every function
6264 gets an entry point, so that block compilation looks a little
6265 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6266 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6267 returns the number of bytes consed since the system started,
6268 rather than the number consed since the first time the function
6269 was called. (The new definition parallels ANSI functions like
6270 CL:GET-INTERNAL-RUN-TIME.)
6271 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6272 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6273 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6274 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6275 * Fasl file version numbers are now independent of the target CPU,
6276 since historically most system changes which required version
6277 number changes have affected all CPUs equally. Similarly,
6278 the byte fasl file version is now equal to the ordinary
6281 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6282 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6283 is no longer recognized. I apologize for this, because it was
6284 listed in SB-EXT as a supported extension, but I found that
6285 its existing behavior was poorly specified, as well as incorrectly
6286 specified, and it looked like too much of a mess to straighten it
6287 out. I have enough on my hands trying to get ANSI stuff to work..
6288 * many patches ported from CMU CL by Martin Atzmueller, with
6289 half a dozen bug fixes in pretty-printing and the debugger, and
6290 half a dozen others elsewhere
6291 * fixed bug 13: Floating point infinities are now supported again.
6292 They might still be a little bit flaky, but thanks to bug reports
6293 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6294 as flaky as they were.
6295 * The --noprogrammer command line option is now supported. (Its
6296 behavior is slightly different in detail from what the old man
6297 page claimed it would do, but it's still appropriate under the
6298 same circumstances that the man page talks about.)
6299 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6300 are now supported, and enabled by default. Thus, the compiler can
6301 handle many floating point and complex operations much less
6302 inefficiently. (Thus e.g. you can implement a complex FFT
6304 * The compiler now detects type mismatches between DECLAIM FTYPE
6305 and DEFUN better, and implements CHECK-TYPE more correctly, and
6306 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6307 thanks to patches from Martin Atzmueller.
6308 * various fixes to make the cross-compiler more portable to
6309 ANSI-conforming-but-different cross-compilation hosts (notably
6310 Lispworks for Windows, following bug reports from Arthur Lemmens)
6311 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6312 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6313 fixed thanks to Pierre Mai's CMU CL patches.
6314 * fixes to keep the system from overflowing internal counters when
6315 it tries to use i/o buffers larger than 16M bytes
6316 * fixed bug 45a: Various internal functions required to support
6317 complex special functions have been merged from CMU CL sources.
6318 (When I was first setting up SBCL, I misunderstood a compile-time
6319 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6320 * improved support for type intersection and union, fixing bug 12
6321 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6322 more obscure bugs as well
6323 * some steps toward byte-compiling non-performance-critical
6324 parts of the system, courtesy of patches from Martin Atzmueller
6325 * Christophe Rhodes has made some debian packages of sbcl at
6326 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6327 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6328 stable, but are nonetheless usable. When he's ready, I'd be happy
6329 to add them to the SourceForge "File Releases" section. (And if
6330 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6331 * new fasl file format version number (because of changes in
6332 internal representation of (OR ..) types to accommodate the new
6333 support for (AND ..) types, among other things)
6335 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6336 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6338 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6340 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6341 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6342 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6343 * DESCRIBE now works on structure objects again.
6344 * Most function call argument type mismatches are now handled as
6345 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6346 know whether the function will be redefined before the call is
6347 executed. (The compiler could flag local calls with full WARNINGs,
6348 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6349 it doesn't keep track of enough information to know whether calls
6350 are local in this sense.)
6351 * Compiler output is now more verbose, with messages truncated
6352 later than before. (There should be some supported way for users
6353 to override the default verbosity, but I haven't decided how to
6354 provide it yet, so this behavior is still controlled by the internal
6355 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6356 src/compiler/ir1util.lisp.)
6357 * Fasl file format version numbers have increased again, because
6358 support for the Gray streams extension changes the layout of the
6359 system's STREAM objects.
6360 * The Gray subclassable streams extension now works, thanks to a
6361 patch from Martin Atzmueller.
6362 * The full LOAD-FOREIGN extension (not just the primitive
6363 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6364 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6365 but like most other programs, it defaults to copying the Unix
6366 environment from the original process instead of starting the
6367 new process in an empty environment.
6368 * Extensions which manipulate the Unix environment now support
6369 an :ENVIRONMENT keyword option which doesn't smash case or
6370 do other bad things. The CMU-CL-style :ENV option is retained
6371 for porting convenience.
6372 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6373 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6375 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6377 * A patch from Martin Atzmueller seems to have solved the SIGINT
6378 problem, and as far as we know, signal-handling now works cleanly.
6379 (If you find any new bugs, please report them!)
6380 * The system no longer defaults Lisp source file names to types
6381 ".l", ".cl", or ".lsp", but only to ".lisp".
6382 * The compiler no longer uses special default file extensions for
6383 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6384 seems to expect a single default extension for all compiled code,
6385 and there's no compelling reason to try to stretch the standard
6386 to allow two different extensions.) Instead, byte-compiled files
6387 default to the same extension as native-compiled files.
6388 * Fasl file format version numbers have increased again, because
6389 a rearrangement of internal implementation packages made some
6390 dumped symbols in old fasl files unreadable in new cores.
6391 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6392 many fewer weird special cases.
6393 * Bug #17 (differing COMPILE-FILE behavior between logical and
6394 physical pathnames) has been fixed, and some related misbehavior too,
6395 thanks to a patch from Martin Atzmueller.
6396 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6397 by Tim Moore, ported to SBCL by Martin Atzmueller.
6398 * Martin Atzmueller fixed several filesystem-related problems,
6399 including bug #36, in part by porting CMU CL patches, which were
6400 written in part by Paul Werkowski.
6401 * More compiler warnings in src/runtime/ are gone, thanks to
6402 more patches from Martin Atzmueller.
6403 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6406 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6408 * DESCRIBE now works on CONDITION objects.
6409 * The debugger now handles errors which arise when trying to print
6410 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6412 * The build system now uses an additional file, customize-target-features.lisp,
6413 to allow local modifications to the target *FEATURES* list. (The point of
6414 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6415 debugging features enabled, without having to worry about propagating it
6416 into everyone's system when I do a "cvs update".) When no
6417 customize-target-features.lisp file exists, the target *FEATURES* list
6418 should be constructed the same way as before.
6419 * fixed bugs in DEFCONSTANT ANSI-compatibility:
6420 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
6421 warn about behavior which is undefined under the ANSI spec. Note: This
6422 is specified by ANSI, but it's not very popular with programmers.
6423 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
6424 macro in the SBCL sources for an example of a workaround which you
6425 might use to make portable ANSI-standard code which does what you want.
6426 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
6427 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
6428 when it's used as a non-toplevel form. (This is required in order
6429 to implement the DEFCONSTANT-EQX macro.)
6430 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6431 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6432 funny things, due to bugs in the implementation of EVAL-WHEN
6433 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6434 non-toplevel DEFCONSTANTs are uncommon.)
6435 * The core file version number and fasl file version number have been
6436 incremented, because the old noncompliant DEFCONSTANT behavior involved
6437 calling functions which no longer exist, and because I also took the
6438 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6439 * fixed bug 1 (error handling before read-eval-print loop starts), and
6440 redid debugger restarts and related debugger commands somewhat while
6442 ** The QUIT debugger command is gone, since it did something
6443 rather different than the SB-EXT:QUIT command, and since it never
6444 worked properly outside the main toplevel read/eval/print loop.
6445 Invoking the new TOPLEVEL restart provides the same functionality.
6446 ** The GO debugger command is also gone, since you can just invoke
6447 the CONTINUE restart directly instead.
6448 ** The TOP debugger command is also gone, since it's redundant with the
6449 FRAME 0 command, and since it interfered with abbreviations for the
6451 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6453 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6454 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6455 some porting work by Martin Atzmueller)
6456 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6457 with a boatload of patches which he ported to SBCL. Now that those
6459 ** The system tries to make sure that its low-priority messages
6460 are prefixed by semicolons, to help people who like to use
6461 syntax highlighting in their ILISP buffer. (This patch
6462 was originally due to Raymond Toy.)
6463 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6464 patches originally written by Raymond Toy.
6465 ** The compiler understands coercion between single-value and
6466 multiple-VALUES type expressions better, getting rid of some very
6467 weird behavior, thanks to patches originally by Robert MacLachlan
6468 and Douglas Crosher.
6469 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6470 lambda lists, thanks to a patch originally by Pierre Mai.
6471 ** The system no longer bogusly warns about "abbreviated type
6473 ** The compiler gets less confused by inlining and RETURN-FROM,
6474 thanks to some patches originally by Tim Moore.
6475 ** The system no longer hangs when dumping circular lists to fasl
6476 files, thanks to a patch originally from Douglas Crosher.
6477 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6478 undefined function error.
6479 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6480 in structure slot initforms) for now, documented workaround instead:-|
6481 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6482 * fixed bug 5: added stubs for various Gray stream functions called
6483 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6484 installed, at least appropriate type errors are generated
6485 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6486 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6487 consistently in DEFMETHOD forms.
6488 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6489 it doesn't seem to affect SBCL after all
6490 * The C runtime system now builds with better optimization and many
6491 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6493 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6495 * The system is now under CVS at SourceForge (instead of the
6496 CVS repository on my home machine).
6497 * The new signal handling code has been tweaked to treat register
6498 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6499 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6500 downstream, e.g. in debug-int.lisp, has implicit dependencies
6501 on the unsignedness of integer representation of machine words,
6502 and that caused the system to bomb out with infinite regress
6503 when trying to recover from type errors involving signed values,
6504 e.g. (BUTLAST '(1 2 3) -1).)
6505 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6506 (This was one of the bugs Peter Van Eynde reported back in July.)
6507 * The system now uses code inspired by Colin Walters' O(N)
6508 implementation of MAP (from the cmucl-imp@cons.org mailing
6509 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6510 inline the MAP operation, and there is more than one
6511 sequence argument to the MAP call (so that it can't just
6512 do ETYPECASE once and for all based on the type of the
6513 single sequence argument). (The old non-inline implementation
6514 of the general M-argument sequence-of-length-N case required
6515 O(M*N*N) time when any of the sequence arguments were LISTs.)
6516 * The QUIT :UNIX-CODE keyword argument has been renamed to
6517 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6518 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6520 * Raymond Wiker's patches to port dynamic loading from Linux to
6521 FreeBSD have been added.
6522 * The BUGS file is now more nearly up to date, thanks in large part
6523 to Martin Atzmueller's review of it.
6524 * The debugger now flushes standard output streams before it begins
6525 its output ("debugger invoked" and so forth).
6526 * The core version number and fasl file version number have both
6527 been incremented, because of incompatible changes in the layout
6529 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6530 used to not be called for a saved Lisp image.)
6531 * Martin Atzmueller's version of a patch to fix a compiler crash,
6532 as posted on sbcl-devel 13 September 2000, has been installed.
6533 * Instead of installing Martin Atzmueller's patch for the
6534 compiler transform for SUBSEQ, I deleted the compiler transform,
6535 and transforms for some similar consing operations.
6536 * A bug in signal handling which kept TRACE from working on OpenBSD
6538 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6539 away by constant folding
6540 * The system now defines its address space constants in one place
6541 (in the Lisp sources), and propagates them automatically elsewhere
6542 (through GENESIS and the sbcl.h file). Therefore, patching the
6543 address map is less unnecessarily tedious and error-prone. The
6544 Lisp names of address space constants have also been systematized.
6545 * CVS tags like dollar-Header-dollar have been removed from
6546 the sources, because they have never saved me trouble and
6547 they've been source of trouble working with patches and other
6548 diff-related operations.
6549 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6550 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6552 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6554 * The system has been ported to OpenBSD.
6555 * The system now compiles with a simple "sh make.sh" on the systems
6556 that it's supported on. I.e., now you no longer need to tweak
6557 text in the target-features.lisp-expr and symlinks in src/runtime/
6558 by hand, the make.sh takes care of it for you.
6559 * The system is no longer so grossly inefficient when compiling code
6560 involving vectors implemented as general (not simple) vectors (VECTOR T),
6561 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6562 which dares to use the various sequence functions on non-simple
6563 vectors, takes less of a performance hit.
6564 * There is now a primitive type predicate VECTOR-T-P
6565 to test for the (VECTOR T) type, so that e.g.
6566 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6567 can now be compiled with some semblance of efficiency. (The old code
6568 turned the type declaration into a full call to %TYPEP at runtime!)
6569 * AREF on (VECTOR T) is still not fast, since it's still compiled
6570 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6571 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6572 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6573 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6574 without making full calls to SUBTYPEP at runtime.
6575 (Some analogous efficiency issues for non-simple vectors specialized to
6576 element types other than T, or for non-simple multidimensional arrays,
6577 have not been addressed. They could almost certainly be handled the
6578 same way if anyone is motivated to do so.)
6579 * The changes in array handling break binary compatibility, so
6580 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6581 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6582 instead of (VALUES T T).
6583 * By following the instructions that Dan Barlow posted to sbcl-devel
6584 on 2 July 2000, I was able to enable primitive dynamic object
6585 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6586 functionality is not implemented (since it calls ld to resolve
6587 library references automatically, requiring RUN-PROGRAM for its
6588 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6589 try to resolve library references) is now supported.
6590 * The system now flushes the standard output streams when it terminates,
6591 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6592 them at several other probably-convenient times, e.g. in each pass of
6593 the toplevel read-eval-print loop, and after evaluating a form given
6594 as an "--eval" command-line option. (These changes were motivated by a
6595 discussion of stream flushing issues on cmucl-imp in August 2000.)
6596 * The source transform for TYPEP of array types no longer assumes
6597 that an array whose element type is a not-yet-defined type
6598 is implemented as an array of T, but instead punts, so that the
6599 type will be interpreted at runtime.
6600 * There is now some support for cross-compiling in make.sh: each of
6601 the phases of make.sh has its own script. (This should be transparent
6602 to people doing ordinary, non-cross-compile builds.)
6603 * Since my laptop doesn't have hundreds of megabytes of memory like
6604 my desktop machine, I became more motivated to do some items on
6605 my to-do list in order to reduce the size of the system a little:
6606 ** Arrange for various needed-only-at-cold-init things to be
6607 uninterned after cold init. To support this, those things have
6608 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6609 symbols with such names are now uninterned after cold init).
6610 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6611 fasl files for cold load.
6612 ** Remove the old compiler structure pooling code (which used to
6613 be conditional on the target feature :SB-ALLOC) completely.
6614 ** Redo the representation of some data in cold init to be more compact.
6615 (I also looked into supporting byte compiled code at bootstrap time,
6616 which would probably reduce the size of the system a lot, but that
6617 looked too complicated, so I punted for now.)
6618 * The maximum signal nesting depth in the src/runtime/ support code has
6619 been reduced from 4096 to 256. (I don't know any reason for the very
6620 large old value. If the new smaller value turns out to break something,
6621 I'll probably just bump it back up.)
6622 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6624 * Many, many bugs reported by Peter Van Eynde have been added to
6625 the BUGS list; some have even been fixed.
6626 * While enabling dynamic object file loading, I tried to make the
6627 code easier to understand, renaming various functions and variables
6628 with less ambiguous names, and changing some function calling
6629 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6630 * While trying to figure out how to do the OpenBSD port, I tried to
6631 clean up some of the code in src/runtime/. In particular, I dropped
6632 support for non-POSIX signal handling, added various comments,
6633 tweaked the code to reduce the number of compilation warnings, and
6634 renamed some files to increase consistency.
6635 * To support the new automatic configuration functionality in make.sh,
6636 the source file target-features.lisp-expr has been replaced with the
6637 source file base-target-features.lisp-expr and the machine-generated
6638 file local-target-features.lisp-expr.
6639 * fixed a stupid quoting error in make.sh so that using CMU CL
6640 "lisp -batch" as cross-compilation host works again
6642 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6644 * DESCRIBE no longer tries to call itself recursively to describe
6645 bound/fbound values, so that it no longer fails on symbols which are
6646 bound to themselves (like keywords, T, and NIL).
6647 * DESCRIBE now works on generic functions.
6648 * The printer now prints less-screwed-up representations of closures
6649 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6650 * A private symbol is used instead of the :EMPTY keyword previously
6651 used to mark empty slots in hash tables. Thus
6652 (DEFVAR *HT* (MAKE-HASH-TABLE))
6653 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6654 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6655 now does what ANSI says that it should. (You can still get
6656 similar noncompliant behavior if bang on the hash table
6657 implementation with all the symbols you get back from
6658 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6659 This breaks binary compatibility, since tests for equality to
6660 :EMPTY are wired into things like the macroexpansion of
6661 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6663 * There's now a minimal placeholder implementation for CL:STEP,
6664 as required by ANSI.
6665 * An obscure bug in the interaction of the normal compiler, the byte
6666 compiler, inlining, and structure predicates has been patched
6667 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6668 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6670 * Missing ordinary arguments in a macro call are now detected even
6671 when the macro lambda list contains &KEY or &REST.
6672 * The debugger no longer complains about encountering the top of the
6673 stack when you type "FRAME 0" to explicitly instruct it to go to
6674 the top of the stack. And it now prints the frame you request even
6675 if it's the current frame (instead of saying "You are here.").
6676 * As specified by ANSI, the system now always prints keywords
6677 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6679 * The default initial SIZE of HASH-TABLEs is now smaller.
6680 * Type information from CLOS class dispatch is now propagated
6681 into DEFMETHOD bodies, so that e.g.
6682 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6684 is now basically equivalent to
6685 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6686 (DECLARE (TYPE SINGLE-FLOAT X))
6688 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6689 operation, without having to do run-time type dispatch.
6690 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6691 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6692 * Since I don't seem to be making big file reorganizations very often
6693 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6694 is overflowing my ability to conveniently back them up), I've finally
6695 checked the system into CVS. (The CVS repository is on my home system,
6696 not at SourceForge -- putting it on SourceForge might come later.)
6697 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6698 high-level GC-NOTIFY-FOO functions send their output. (There's
6699 still very little control of where low-level verbose GC functions
6700 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6701 less than it used to -- the GC-NOTIFY-FOO functions are now under
6702 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6703 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6704 in only one place in the source code, and propagates it automatically
6705 everywhere that it's needed. Thus e.g. when I bump the version from
6706 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6707 * The C source files now include boilerplate legalese and documentation
6708 at the head of each file (just as the Lisp source files already did).
6709 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6710 to his page will be replaced with a link to his new CLiki service.
6712 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6714 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6715 * The build process now looks for GNU make under the default name "gmake",
6716 instead of "make" as it used to. If GNU make is not available as "gmake"
6717 on your system, you can change this default behavior by setting the
6718 GNUMAKE environment variable.
6719 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6720 can build without error under CMU CL.
6722 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6724 * There is now a partial SBCL user manual (with some new text and some
6725 text cribbed from the CMU CL manual).
6726 * The beginnings of a profiler have been added (starting with the
6727 CMU CL profiler and simplifying and cleaning up). Eventually the
6728 main interface should be through the TRACE macro, but for now,
6729 it's still accessed through vaguely CMU-CL-style functions and macros
6730 exported from the package SB-PROFILE.
6731 * Some problems left over from porting CMU CL to the new
6732 cross-compilation bootstrap process have been cleaned up:
6733 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6734 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6735 part when getting rid of the compiler *BACKEND* stuff.)
6736 ** The value of *NULL-TYPE* was screwed up, because it was
6737 being initialized before the type system knew the final
6738 definition of the 'NULL type. This screwed up several key
6739 optimizations in the compiler, causing inefficiency in all sorts
6740 of places. (I found it because I wanted to understand why
6741 GET-INTERNAL-RUN-TIME was consing.)
6742 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6743 PROCLAIM FTYPE information. Unfortunately this broke binary
6744 compatibility again, since now the forms output by DEFGENERIC
6745 to refer to functions which didn't exist in 0.6.3.
6746 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6747 can use the new (as of 0.6.3) transform for SOME into MAP into
6749 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6750 values to (INTEGER 0 1000000), so that the time code will no longer
6751 occasionally get blown up by Linux returning 1000000 microseconds
6752 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6753 its output conform to the ANSI spec. (Alas, this makes its output
6754 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6755 * A full call to MAP NIL with a single sequence argument no longer conses.
6756 * fixes to problems pointed out by Martin Atzmueller:
6757 * The manual page no longer talks about multiprocessing as though
6758 it were currently supported.
6759 * The ILISP support patches have been removed from the distribution,
6760 because as of version 5.10.1, ILISP now supports SBCL without us
6761 having to maintain patches.
6762 * added a modified version of Raymond Toy's recent CMU CL patch for
6763 EQUALP comparison of HASH-TABLE
6765 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6767 * The system still can't cross-compile itself with
6768 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6769 entails), but at least it can compile more of itself that way
6770 than it used to be able to, and various buglets which were uncovered
6771 by trying to cross-compile itself that way have now been fixed.
6772 * This release breaks binary compatibility again. This time
6773 at least I've incremented the FASL file format version to 2, so that the
6774 problem can be detected reliably instead of just causing weird errors.
6775 * various new style warnings:
6776 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6777 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6778 ** using the lexical binding of a variable named in the *FOO* style
6779 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6780 as specified by ANSI.
6781 * *RANDOM-STATE* is no longer automatically initialized from
6782 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6783 default behavior of the system is to repeat its behavior every time
6784 it's run. If you'd like to change this behavior, you can always
6785 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6786 old convention there was no comparably easy way to get the system to
6787 repeat its behavior every time it was run.
6788 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6789 FTYPE declarations has been removed, in favor of their ANSI
6790 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6791 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6792 the types of their sequence arguments can be determined at compile time.
6793 This is done through a new open code expansion for MAP which eliminates
6794 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6795 argument types can be determined at compile time.
6796 * The optimizer now transforms COERCE into an identity operation when it
6797 can prove that the coerced object is already of the correct type. (This
6798 can be a win for machine generated code, including the output of other
6799 optimization transforms, such as the MAP transform above.)
6800 * Credit information has been moved from source file headers into CREDITS.
6801 * Source file headers have been made more standard.
6802 * The CASE macro now compiles without complaining even when it has
6805 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6807 * (Note that the way that the PCL macroexpansions were rewritten
6808 to accommodate the change in DEFGENERIC below breaks binary
6809 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6810 not run under sbcl-0.6.2. Once we get out of alpha releases,
6811 i.e. hit release 1.0.0, we'll probably try to maintain binary
6812 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6813 and sbcl-1.4.4. Until then, however, it might be fairly common
6814 for maintenance releases to break binary compatibility.)
6815 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6817 * The reporting of unhandled signals has been changed to print some
6818 explanatory text as well as the report form. (Previously only
6819 the report form was printed.)
6820 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6821 it defines, so that the compiler no longer issues undefined function
6822 warnings for compiled-but-not-yet-loaded generic functions.
6823 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6824 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6825 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6826 section of the ANSI spec are supported.
6827 * The "" nickname for the "KEYWORD" package has been removed.
6828 The reader still handles symbol tokens which begin with a package marker
6829 as keywords, but it doesn't expose its mechanism for doing so in the
6830 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6831 * The system now issues STYLE-WARNINGs for contradictory TYPE
6832 proclamations. (Warnings for contradictory FTYPE proclamations would
6833 be nice too, but those can't be done usefully unless the type system
6834 is made smarter about FUNCTION types.)
6835 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6836 systematized, so that "*target-*.lisp is supposed to exist only on the
6837 target and imply that there's a related file which exists on the
6838 host, and *host-*.lisp is supposed to exist only on the host and imply
6839 that there's a related file which exists on the target. This involves a
6840 lot of renaming. Hopefully the acute confusion caused by the renaming
6841 will be justified by the reduction in chronic confusion..
6842 ** runtime-type.lisp -> early-target-type.lisp
6843 ** target-type.lisp -> late-target-type.lisp
6844 ** early-host-format.lisp -> early-format.lisp
6845 ** late-host-format.lisp -> late-format.lisp
6846 ** host-error.lisp -> misc-error.lisp
6847 ** early-error.lisp -> early-target-error.lisp
6848 ** late-error.lisp -> late-target-error.lisp
6849 ** host-defboot.lisp -> early-defboot.lisp
6850 ** code/misc.lisp -> code/target-misc.lisp
6851 ** code/host-misc.lisp -> code/misc.lisp
6852 ** code/numbers.lisp -> code/target-numbers.lisp
6853 ** code/early-numbers.lisp -> numbers.lisp
6854 ** early-host-type.lisp -> early-type.lisp
6855 ** late-host-type.lisp -> late-type.lisp
6856 ** host-typep.lisp -> typep.lisp
6857 ** load.lisp -> target-load.lisp
6858 ** host-load.lisp -> load.lisp
6859 ** host-disassem.lisp -> disassem.lisp
6860 ** host-insts.lisp -> insts.lisp
6861 ** byte-comp.lisp -> target-byte-comp.lisp
6862 ** host-byte-comp.lisp -> byte-comp.lisp
6863 ** host-signal.lisp -> signal.lisp
6864 ** host-defstruct.lisp -> defstruct.lisp
6865 ** late-target-type.lisp -> deftypes-for-target.lisp
6866 Furthermore, several other previously target-only files foo.lisp (e.g.
6867 hash-table.lisp and random.lisp) have been split into a target-and-host
6868 foo.lisp file and a target-only target-foo.lisp file, with their key type
6869 definitions in the target-and-host part, so that the cross-compiler will
6870 know more about target types.
6871 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6872 gone away. In their place are various *BACKEND-FOO* variables
6873 corresponding to the slots of the old structure.
6874 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6875 into the target SBCL has been fixed.
6876 * The chill.lisp system for loading cold code into a running SBCL
6878 * Support for the CMU CL "scavenger hook" extension has been removed.
6879 (It was undocumented and unused in the CMU CL sources that SBCL was
6880 derived from, and stale in sbcl-0.6.1.)
6881 * Various errors in the cross-compiler type system were detected
6882 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6883 (enabling various consistency checks). Many of them were fixed,
6884 but some hard problems remain, so the compiler is back to
6885 running without *TYPE-SYSTEM-INITIALIZED* for now.
6886 * As part of the cross-compiler type system cleanup, I implemented
6887 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6888 * I have started adding UNCROSS calls throughout the type system
6889 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6890 on cross-compiler input files will be able to go away, and various
6892 * CONSTANTP now returns true for quoted forms (as explicitly required
6895 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6897 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6898 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6899 (MAKE-LIST -1). In the longer term, it ought to become true
6900 that declarations are assertions even at SAFETY 1. For now, it's not
6901 quite true even at SAFETY 3, but it's at least more nearly true..
6902 (Note that this change seems to increases the size of the system by
6903 O(5%) and to decrease the speed of the compiler by 20% or more.)
6904 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6905 for the problem of printing dozens of lines of distracting information
6906 about low-level system machinery as part of the top stack frame
6907 on entry to the debugger when an undefined function was called.
6908 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6909 is not reset to COMMON-LISP-USER.
6910 * Compilation of stuff related to dyncount.lisp has been made conditional
6911 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6912 smaller. The various dyncount-related symbols have been moved into
6913 a new "SB-DYNCOUNT" package.
6914 * tty-inspect.lisp has been renamed to inspect.lisp.
6915 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6916 feature has gone away. (When we eventually port to other flavors of
6917 libc and/or Unix, we'll try to make the differences between flavors
6918 invisible at the user level.)
6919 * Various other *FEATURES* tags, and/or their associated conditionals,
6920 have been removed if obsolescent, or given better documentation, or
6921 sometimes given more-mnemonic names.
6923 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6925 * tidied up "make.sh" script
6926 * tidied up system directory structure
6927 * better "clean.sh" behavior
6928 * added doc/FOR-CMUCL-DEVELOPERS
6929 * many many small tweaks to output format, e.g. removing possibly-confusing
6930 trailing #\. character in DESCRIBE-INSTANCE
6931 * (EQUALP #\A 'A) no longer signals an error.
6932 * new hashing code, including EQUALP hashing
6933 * tidied up Lisp initialization and toplevel
6934 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6935 * command line argument processing
6936 * added POSIX-GETENV function to deal with Unix-ish environment variables
6937 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6938 terminating SBCL on EOF
6939 * non-verbose GC by default
6940 * There is no more "sbcl" shell script; the sbcl file is now the C
6941 runtime executable (just like CMU CL).
6942 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6944 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6945 symbol and package information as Lisp native symbol and package objects
6946 instead of strings naming symbols and strings naming packages. This way,
6947 whenever packages are renamed (as in warm init), debug information is
6948 transformed along with everything else.
6949 * tweaked the optimization policy declarations which control the building
6950 of SBCL itself. Now, among other things, the system no longer saves
6951 source location debugging information. (This helps two problems at once
6952 by reducing SBCL size and by keeping SBCL from trying to look for its
6953 sources -- which may not exist -- when reporting errors.)
6954 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6955 debugging and testing purposes
6956 * cleaned up printing, making the printer call PRINT-OBJECT for
6957 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6958 methods, giving nearly-ANSI behavior
6959 * converted almost all special variables to use *FOO* naming convention
6960 * deleted PARSE-TIME functionality, since it can be done portably
6961 * moved some files out of cold init into warm init
6962 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6964 * regularized formatting of source files
6965 * added an install.sh script
6966 * fixed ridiculous memory usage of cross-compiler by making
6967 compiler/alloc.lisp not try to do pooling unless it can hook
6968 itself into the GC of the cross-compilation host. Now the system
6969 builds nicely on my old laptop.
6970 * added :SB-ALLOC in target-features.lisp-expr
6971 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6972 was not implemented)
6973 * re-did condition handling and note reporting in the compiler. Notes
6974 are no longer handled by signalling conditions. Style warnings
6975 and warnings are handled more correctly and reported in such a way
6976 that it's easy to find one or the other in your output (so that you
6977 can e.g. figure out which of many problems caused COMPILE-FILE to
6979 * changed the severity of several compiler warnings from full WARNING
6980 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6981 compiler note reporting so that it doesn't use the condition system
6982 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6983 COMPILE-FILE command)
6984 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6985 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6986 no longer supported, since their implementation was deeply intertwingled
6987 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6988 * removed bogus "support" for compiler macros named (SETF FOO), and
6989 removed the compiler macro for SETF INFO (but only after making a fool
6990 of myself on the cmucl-imp mailing list by posting a bogus patch for
6991 DEFINE-COMPILER-MACRO..)
6992 * Compiled files containing forms which have side effects on the Lisp
6993 reader (such as DEFPACKAGE forms) are now handled more correctly.
6994 (Compiler queuing of top level lambdas has been suppressed by setting
6995 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6996 * deleted various currently-unused source files, e.g. gengc.lisp. They
6997 may be added back at some point e.g. when porting to other architectures,
6998 but until they are it's distracting to distribute them and to try to
7000 * deleted "UNCROSS couldn't recurse through.." style warnings, since
7001 there were so many of them they're just distractions, and UNCROSS is
7002 known to be able to handle the current sources
7003 * moved PROFILE functionality into TRACE, so that it will be clear
7004 how the wrapping and unwrapping of functions when you profile them
7005 interacts with the wrapping and unwrapping of functions when you
7006 trace them. (Actually, the functionality isn't there yet, but at least
7007 the interface specification is there. Hopefully, the functionality will
7008 arrive with some future maintenance release.)
7009 * removed host-oops.lisp
7010 * changed signature of QUIT function to allow UNIX-CODE argument
7011 * fixed READ-SEQUENCE bug
7012 * tweaked verbose GC output so that it looks more like the progress
7013 output that ANSI specifies for functions like LOAD
7014 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
7015 * added <http://sbcl.sourceforge.com> to the banner information printed by