1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.1.7:
3 * notice: The implementation of MAP-ALLOCATED-OBJECTS (the heart of
4 ROOM, plus a few SB-INTROSPECT functions) has been completely
5 rewritten; it may now exhibit different bugs than before.
6 * new feature: minimal runtime/compiler intrastructure support for SSE
7 SIMD values, as SB-EXT:SIMD-PACK. Enabled on x86-64 via the build-time
8 feature :sb-simd-pack. This should enable intrinsics extensions as
9 libraries, without patching SBCL itself. Thanks to Alexander Gavrilov
10 for maintaining a branch for so long.
11 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
12 the working directory of the spawned process.
13 (lp#791800) (patch by Matthias Benkard)
14 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
15 stack-allocated on PPC.
16 * enhancement: "fixed objects" can now be stack-allocated on PPC.
17 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
18 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
19 also returns VOPs which do not translate any functions, and finds
20 defoptimizer types ir2convert and stack-allocate-result.
21 * enhancement: better type derivation for APPEND, NCONC, LIST.
23 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
24 heap in a manner similar to the GC rather than its previous ad-hoc
25 scheme, and is therefore no less and possibly more accurate.
26 * fixes and enhancements related to Unicode:
27 ** the character database information has been updated to Unicode 6.2;
28 ** support for canonical and compatibility decomposition of characters has
29 been added, along with support for primary composition;
30 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
31 NFKD) has been included;
32 ** querying the character database for code points not defined by Unicode
33 gives less wrong answers (lp#1178038, reported by Ken Harris)
34 * enhancement: print intermediate evaluation results for some ASSERTed
35 expressions. (lp#789497) (patch by Alexandra Barchunova)
36 * enhancement: x86-64 disassemblies are annotated with unboxed constant
37 values when there are references to (RIP-relative) unboxed constants.
38 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
39 of quadratically with the size of the input in the worst case.
41 * bug fix: handle errors when initializing *default-pathname-defaults*,
42 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
43 decoding errors, or directories being deleted.
44 * bug fix: Loading a core with a discontiguous dynamic space now correctly
45 computes the amount of dynamic space used.
46 * bug fix: disassembler missing ",8" on SHLD
47 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
48 that provide an "invalid" stack frame link for the signal handler
49 itself now use the saved-fp-and-pc mechanism to pick up from the stack
50 frame in the interrupt (signal) context. This is known to affect
51 threaded FreeBSD/x86-64.
52 * bug fix: some LOOP statements couldn't be compiled.
54 * bug fix: sb-sequence:dosequence works on literal vectors.
55 * bug fix: errors in generic arithmetic show the assembly routine's
56 caller on x86 and x86-64. (lp#800343)
57 * bug fix: Compile-time type errors should never result in COMPILE-FILE
59 * bug fix: Known bad local calls do not cause strange failures when
60 emitting or dumping code. (lp#504121)
61 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
62 codegen errors: type checks are inserted as necessary. (lp#1177703)
63 * bug fix: Unsigned modular arithmetic is correctly converted into signed
64 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
65 * bug fix: a combination of inlined local function with &optional and
66 recursion no longer causes undescriptive compiler errors. (lp#1180992)
67 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
68 when testing for non-zero-ness.
69 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
71 * optimization: faster ISQRT on fixnums and small bignums
72 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
73 * optimization: On x86-64, the number of multi-byte NOP instructions used
74 for code alignment is now always minimal.
75 * optimization: On 64-bit targets, the compiler generates much faster
76 code for type checks for types known at compile time that are smaller
77 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
78 their COMPLEX variants.
79 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
80 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
81 * optimization: ROOM no longer conses so egregiously on non-x86oid
83 * optimization: associative bitwise operations reassociate patterns like
84 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
86 * optimization: quasiquote expressions now perform more constant folding,
87 instead of consing equal lists at runtime. (lp#1026439)
88 * optimization: local call analysis of inlined higher-order function
89 should converge more quickly, resulting in better code for complex
91 * optimization: On x86-64, medium (word-sized but wider than 32 bits)
92 integer constants are handled more cleverly, especially when they
93 can be represented as sign-extended (signed-byte 32). (Based on a
94 patch by Douglas Katzman)
95 * optimization: IF/IF conversion should reliably result in sane code
96 when (some of) the results of the inner IF are always false or
99 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
100 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
102 * bug fix: :allocation slot option works for condition slots
104 * bug fix: redefining conditions does not lead to multiple evaluations of
105 hairy slot initfunctions anymore (lp#1164969)
106 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
108 * bug fix: function constants now work as initforms and default initarg
109 values of conditions (lp#539517)
110 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
111 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
112 * bug fix: no more bogus ## references when pretty printing backquoted
113 forms with non-trivial structure sharing. (lp#1161218)
114 * bug fix: Don't signal an error on (setf (documentation nil 'function)
115 "doc"). Signal a style-warning instead when trying to set documentation
116 of NIL for all other documentation types. (Reported by Zach
117 Beane; regression since 2e52fa05.)
118 * bug fix: modular arithmetic involving large constants and conditionals
119 should no longer result in spurious dead code elimination. (Reported by
121 * bug fix: our mach exception handler can seemingly called very early in
122 the program execution process on OS X 10.8.0. Try and handle that case
123 robustly, without potentially leaking mach ports too much.
124 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
126 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
127 * enhancement: the continuable error when defknown-ing over extant
128 fndb entries can be ignored by passing :overwrite-fndb-silently t
129 as a keyword argument to sb-c:defknown (after attributes). Useful
130 to allow defknown to be re-loaded. Use with :allow-other-keys t
131 for backward compatibility.
132 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
134 * bug fix: Prevent a make-array transform from modifying source forms
135 causing problems for inlined code. Thanks to Bart Botta.
136 (regression since 1.0.42.11-bis)
137 * bug fix: clear-output calls the correct gray stream routine,
138 sb-gray:stream-clear-output. (lp#1153257)
139 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
141 * bug fix: Better error messages for package operations (lp#1154776)
142 * bug fix: delete-package on a nonexistent package should signal a cerror.
143 (regression since 1.0.37.44).
144 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
145 (lp#1154946, lp#1072112)
146 * bug fix: compiling make-array no longer signals an error when the
147 element-type is an uknown type, a warning is issued instead.
148 Thanks to James Kalenius (lp#1156095)
149 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
150 produces wrong results for some inputs. (Thanks to Jan Moringen.)
153 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
154 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
156 * new feature: package local nicknames. See manual for details.
157 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
158 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
159 * enhancement: easier to use restarts for resolving name-conflicts
160 resulting from IMPORT, EXPORT, or USE-PACKAGE.
161 * enhancement: variant DEFPACKAGE forms now signal a full error with
162 restarts provided for resolving the situation. (lp#891351)
163 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
164 DEFPACKAGE forms can now signal a full error with restarts provided for
165 resolving the situation. See manual for details. (lp#891351)
166 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
167 (Thanks to Anton Kovalenko.) (lp#1102748)
168 * enhancement: backtrace improvements
169 ** secondary CLOS dispatch functions have better debug names (lp#503081)
170 ** easier to read method names in backtraces. See
171 SB-DEBUG:*METHOD-FRAME-STYLE*.
172 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
173 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
174 SB-DEBUG:BACKTRACE-AS-LIST.
175 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
176 information is available in less intrusive form as frame annotations.
177 * enhancement: SB-POSIX now provides MAP-ANON.
178 * enhancement: test-suite results are colorized, failures in red, unexpected
179 success in green. Works on Windows and on terminals with ANSI escape code
180 support. Can be disabled with --no-color.
181 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
182 (thanks to James M. Lawrence)
183 * bug fix: no more unused variable style warnings from RESTART-CASE
184 macroexpansion (lp#1113859)
185 * bug fix: no more unused variable style warnings when loading
186 sb-bsd-sockets.asd (lp#1114681)
187 * bug fix: deleting a package removes it from implementation-package
188 lists of other packages.
189 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
190 This does not fix the occasional "interrupt already pending" issue, though.
191 * bug fix: (setf (documentation 'x 'function)) and
192 (setf (documentation #'x t)) set documentation in different places.
193 (regression since 1.0.43.63)
194 * bug fix: build on newer glibc. (lp#1095036)
196 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
197 * optimization: LOOP expressions using "of-type character" have slightly
198 more efficient expansions.
199 * bug fix: very long (or infinite) constant lists in DOLIST do not result
200 in very long compile times or heap exhaustion anymore. (lp#1095488)
201 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
202 * bug fix: adjust-array ignored :initial-element for simple-vectors.
204 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
205 longer cause infinite loops (on circular data) or violate eqlity
206 constraints. (lp#1099708)
207 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
209 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
210 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
212 * enhancement: support for C-c to interrupt the foreground thread
213 on Windows. (Thanks to Anton Kovalenko.)
214 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
215 * enhancement: Safepoint builds on POSIX platforms can now optionally be
216 built without pseudo-atomic sequences and their run-time overhead.
217 * enhancement: Threads created outside of Lisp can enter Lisp through
218 alien callbacks and appear as Lisp threads for the duration of that
219 function invocation. On safepoint builds only.
220 * enhancement: Miscellaneous improvements to namestrings and underlying
221 calls to OS functions for file system access on Windows. (Thanks to
223 * enhancement: The MSI installer support for Windows now uses Windows
224 Installer XML at least version 3.5 and includes various usability
225 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
226 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
227 on Windows. (Thanks to Anton Kovalenko.)
228 * enhancement: The Windows backend now supports the x86-64 platform.
229 (Thanks to Anton Kovalenko.)
230 * bug fix: fasls are now once again directly executable (on platforms
231 supporting shebang lines, with a suitably-installed sbcl).
232 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
233 * bug fix: Fix CAS access to slots of direct instances of structure classes
234 in the presence of subclasses sharing the same conc-name.
235 * bug fix: Logical pathname namestrings on Windows have been changed to
236 be lower-case, to minimize differences between POSIX and Windows.
238 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
239 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
240 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
241 (NT 5.0) is no longer being maintained.
242 * notice: Starting with this version, SBCL on Windows no longer supports
243 building with disabled thread support.
244 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
245 * enhancement: New feature sb-dynamic-core allows the runtime to be
246 rebuilt or relocated without requiring changes to the core file on
247 all linkage table platforms. Required on Windows. (Thanks to Anton
249 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
250 * enhancement: I/O on Windows unnamed pipes is interruptible
251 asynchronously using interrupt-thread, timers when running on Windows NT
252 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
254 * enhancement: Support for the experimental safepoint-based stop-the-world
255 protocol on the PowerPC platform.
256 * bug fix: Non-blocking reads from the Windows console were not necessarily
257 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
258 * bug fix: stability of threads on Windows has been improved upon through
259 an updated stop-the-world protocol (thanks to Anton Kovalenko).
261 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
262 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
263 (COMPILE and COMPILE-FILE still do.)
264 * optimization: the SPARC backend now supports the precise generational
265 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
266 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
267 * enhancement: add experimental support for the SB-THREAD feature and the
268 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
269 Threads are enabled by default, and this version of SBCL is considered
270 to be the last and final release to officially support building with
272 * optimization: The compiler no longer rotates loops in some cases where
273 this transformation actually lead to worse code being generated.
274 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
275 symbol-macros by lexical bindings.
276 * bug fix: stack allocation was prevented by high DEBUG declaration in
278 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
279 (thanks to SANO Masatoshi)
280 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
281 :JUNK-ALLOWED was true.
282 * bug fix: type derivation inferred overly conservative types for
283 unions of array types. (lp#1050768)
285 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
286 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
287 source annotation of DISASSEMBLE output. Defaults to T.
288 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
289 WAIT-P argument added to WITH-RECURSIVE-LOCK.
290 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
292 * enhancement: Optional features (not enabled by default) allow the
293 use of signals for inter-thread synchronization to be reduced on certain
294 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
295 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
296 to test these experimental features. Known remaining bugs include minor
297 thread safety issues, less timely freeing of memory by GC, and certain
298 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
299 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
300 comparisons, particularly on almost-sorted inputs.
301 * bug fix: Reading floats with large exponents no longer takes too much time
302 before reporting that the exponent is too large.
303 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
304 correctly when the received datagram is larger than the provided buffer.
305 (lp#1023438, thanks to Robert Uhl)
306 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
307 a SYMBOL-VALUE form with a constant symbol argument.
308 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
309 into a DEFCAS defined place was used as the place.
310 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
311 for from bit-vectors.
312 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
313 lead to internal errors or crashes (lp#1058799).
314 * documentation: a section on random number generation has been added to the
317 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
318 * enhancement: implicit generic function warnings now specify the package
319 in which the new generic function is being created.
320 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
321 updates of CAS-able places (similar to Clojure's swap!).
322 * enhancement: run-program no longer decodes and re-encodes environment when
323 :environment argument is not provided. (lp#985904)
324 * enhancement: errors during compiler-macro expansion no longer cause
325 runtime errors, only a compile-time warning, otherwise behaving as if
326 the compiler macro had declined to expand.
327 * optimization: On x86-64, code alignment of block headers is done with
328 multi-byte NOPs now instead of repetitions of the single-byte NOP.
329 * optimization: MAP-INTO is substantially faster when the target sequence is
330 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
331 thanks to James M. Lawrence)
332 * optimization: the compiler no longer heap-conses to check exits in cases
333 where the exit function is dynamic extent, or when it can prove the exit
334 function cannot escape. (lp#1002534)
335 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
336 element type, and vectors that aren't SIMPLE-ARRAYs.
337 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
338 speed (around 1/3 the time in some cases), and a little better in terms of
339 comparison calls. (Thanks to Takeru Ohta)
340 * bug fix: On SPARC, a limitation on the number of code constants emittable
341 by the compiler has been lifted, allowing certain long functions to
342 compiled and assembled which had previously been unsupported; fixes
343 cl-bench on this ISA (lp#1008996).
344 * bug fix: potential for infinite recursion during compilation of CLOS slot
345 typechecks when dependency graph had loops. (lp#1001799)
346 * bug fix: error forms reported with some program-errors were not escaped
348 * bug fix: functions from EVAL are now on more equal footing with functions
349 from COMPILE. (lp#1000783, lp#851170, lp#922408)
350 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
351 objects as its :METHOD-COMBINATION argument, not just lists designating
352 method combinations. (lp#936513)
353 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
355 * bug fix: restore build on solaris/sparc. (lp#1008506)
356 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
357 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
358 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
359 as keyword arguments no longer accidentally match unevaluated symbols
361 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
362 parameter was zero, now it signals an error. (lp#905817, fixed since
364 * bug fix: run-program with :pty t no longer makes the pty as the process's
366 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
369 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
370 * RANDOM enhancements and bug fixes:
371 ** bug fix: the range and distribution of random integers could be
372 catastrophically wrong when the compiler derived the type of its
373 argument as a disjoint set of small integers.
374 ** bug fix: the distribution of random integers is now completely
375 uniform even when the specified limit is not a power of two.
376 (Previously some values could be about 0.1 % more probable than
377 others in the worst case.) (lp#309467)
378 ** RANDOM on large integer arguments is generally faster and conses
379 less than before; this is visible for fixnums above a length of
380 about 24 bits, but extremely so for bignums: the old implementation
381 used time and space quadratical in the size of the argument there,
382 the new one is linear.
383 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
384 main entry point, SB-EXT:QUIT is deprecated.
385 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
386 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
387 * enhancement: FASL loading no longer grabs the world-lock.
388 * enhancement: GENCGC reclaims space more aggressively when objects being
389 allocated are a large fraction of the total available heap space.
391 * enhancement: backtraces show the correct number of arguments for frames
392 called with too many arguments.
393 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
395 * enhancement: ASDF has been updated 2.21.
396 * optimization: fewer uses of full calls to signed modular functions.
398 * optimization: typechecking alien values is typically 5 x faster.
399 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
401 * bug fix: file compilation performance issues when dumping subtypes
402 of CHARACTER (lp#994487)
403 * bug fix: fixed disassembly of some SSE instructions on x86-64.
404 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
405 OPEN. (lp#969352, thanks to Kambiz Darabi)
406 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
408 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
409 classoid even if X was not the proper name of the class. (lp#941102)
410 * bug fix: declaration leakage between lexical environments due to careless
411 use of NCONC in MAKE-LEXENV. (lp#924276)
412 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
413 *default-pathname-defaults* contains NAME or TYPE components.
414 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
415 from CL package, e.g. (loop . 10).
416 * bug fix: run-program with existent or non-existent files for :output or
417 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
418 returns NIL instead of signalling an obscure error.
419 * bug fix: fix miscompilation of some logand forms with large constant
420 arguments. (lp#974406)
421 * bug fix: account for funcallable-instance objects properly in ROOM.
422 * bug fix: incorrect octets reported for c-string decoding errors.
424 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
426 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
427 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
428 allowing faster release of memory back to the OS. (lp#991293)
429 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
430 existing deadline for the dynamic scope of its body.
431 * bug fix: compiler-internal interval arithmetic needed to be more
432 conservative about open intervals when operated on by monotonic but not
433 strictly-monotonic functions. (lp#975528)
434 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
435 it's also slightly faster. (lp#998926)
436 * bug fix: better error messages for malformed declarations.
438 * bug fix: define-condition didn't return the name of the defined condition.
440 ** improved docstrings: REPLACE (lp#965592)
442 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
443 * bug fix: fix copy-structure. When copying from stack to heap, garbage
444 could end up in the heap making GC unhappy.
445 (Thanks to James Knight, lp#911027)
447 ** SBCL can now be built using Clang.
448 ** ASDF has been updated 2.20.
449 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
450 * bug fix: don't complain about a too-hairy lexical environment for inlining
451 when the function has never been requested for inlining. (lp#963530)
453 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
454 * enhancements to building SBCL using make.sh:
455 ** --fancy can be specified to enable all supported feature enhancements.
456 ** --with-<feature> and --without-<feature> can be used to specify
457 which features to build with.
458 ** --arch option can be used to specify the architecture to build for.
459 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
460 full-blows cross-compilation.)
461 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
462 which allows specifying name of the default interning package for the
464 * enhancement: when *READ-EVAL* is true, arrays with element type other than
465 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
466 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
467 null alien when malloc() fails. (lp#891268)
468 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
469 conditions can be conveniently accessed through function with the same
470 name, analogously to CONTINUE.
471 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
472 from the printer by type, causing an error marker to be printed instead.
473 (Thanks to Attila Lendvai)
474 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
475 generally behave better when errors occur during printing.
476 * enhancement: the test runner now takes a --report-skipped-tests argument
477 to report the individual tests skipped as well as the number of skipped
479 * enhancement: undefined functions now appear in backtraces as ("undefined
480 function") instead of ("bogus stack frame") on x86oids.
481 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
482 deadlock errors are reported in an easier-to-decipher manner.
483 * enhancement: DESCRIBE on type designators reports the expansion in more
485 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
486 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
487 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
488 * enhancement: better disassembly of segment-prefixes on x86 and other
489 instruction prefixes (e.g. LOCK) on x86 and x86-64.
490 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
491 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
492 * optimization: SUBSEQ on vectors of unknown element type is substantially
494 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
495 be stack-allocated. (lp#902351)
496 * optimization: the compiler is smarter about representation selection for
497 floating point constants used in full calls.
498 * optimization: the compiler no longer refuses to coerce large fixnums to
499 single floats inline, except on x86 where this limitation is still
501 * optimization: truncation operations on integers with constant divisor
502 arguments 1 and -1 are optimized away.
503 * bug fix: deadlock detection could report the same deadlock twice, for
504 two different threads. Now a single deadlock is reported exactly once.
505 * bug fix: interval-arithmetic division during type derivation did not
506 account for signed zeros.
507 * bug fix: compiler error when typechecking a call to a function with
508 non-constant keyword arguments.
509 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
510 * bug fix: condition slot accessors no longer cause undefined function
511 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
512 form that defines them. (lp#896379)
513 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
515 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
516 bogusly report NIL, T.
517 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
518 required arguments ignored and performed assignments to others.
520 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
521 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
522 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
523 * bug fix: redefining a function whose previous definition contained an
524 unknown type no longer causes a style-warning. (lp#806243)
525 * bug fix: undefined functions now appear in backtraces as ("undefined
526 function") instead of ("bogus stack frame") on non-x86oids.
527 * bug fix: backtraces are no longer cut off at ("undefined function") when
528 called under certain circumstances (involving a caller-allocated stack
530 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
531 systems. (regression since 1.0.53)
532 * bug fix: GC deadlocks from dladdr() on certain platforms.
533 * bug fix: broken standard streams no longer automatically cause recursive
534 errors on debugger entry.
535 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
536 (regression since 1.0.53)
537 * bug fix: attempts to stack allocate a required argument to a function with
538 an external entry point caused compiler-errors.
539 * bug fix: compiler notes for failed stack allocation for a function argument
540 no longer claim to be unable to stack allocate the function.
541 * bug fix: COERCE now signals a type-error on several coercions to
542 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
543 * bug fix: missing failure-to-stack-allocate compiler notes for some
544 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
545 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
547 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
549 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
550 * minor incompatible changes:
551 ** RENAME-FILE on a symbolic links used to rename the linked-to file
553 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
554 directory, but now signal an error instead. Use TRUENAME to resolve the
555 pathname if you wish to delete the linked directory, and DELETE-FILE if
556 you wish to delete the
557 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
558 symbols associated with it will trigger a compile-time warning.
559 * thread-related enhancements:
560 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
561 Many thanks to generous donors!)
562 ** Threading is now more reliable on non-Linux platforms. We still don't
563 consider threads on non-Linux platforms good enough to enable them by
564 default, but they're in a clearly better shape now.
565 ** Deadlines supported now on all platforms.
566 ** All blocking functions in the threading API now have a :TIMEOUT
568 ** Semaphore notification objects have been added to SB-THREAD.
569 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
570 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
571 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
572 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
573 using an API anologous to defining new SETFable places.
574 * GC-related enhancements and bug fixes:
575 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
576 and Gb suffixes. Default is megabytes as before.
577 ** on GENCGC targets, the default dynamic space size is now 512Mb for
578 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
579 exception, defaulting to mere 444Mb to fit under default ulimits.) The
580 new defaults are in place to prevent hitting swap on low-end systems.
581 Use build-time option --dynamic-space-size to build an SBCL with
582 another default, or the runtime option to adjust the size at startup: a
583 good size is at most equal to the amount of physical memory the system
585 ** on GENCGC targets, nursery and generation sizes now default to 5% of
587 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
588 refuses to create SIMPLE-FUN objects.
589 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
591 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
592 validation of pointer objects as GENCGC does, instead of a
593 comparatively weak bounds-check against the heap spaces.
594 * SB-BSD-SOCKETS bug fixes:
595 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
596 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
597 systems with getaddrinfo().
598 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
599 safe outside systems with getaddrinfo().
600 * enhancement: ASDF has been updated 2.019.
601 * enhancement: special-case TCO prevention for functions which never return
602 extended to untrusted types, keeping one more frame's worth of debug
603 information around in many cases.
604 * enhancement: debug-names of anonymous and local function are more
605 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
606 * enhancement: on win32, ABS of complex floats guards better against
607 overflows. (lp#888410)
608 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
609 process exiting with code 1. (lp#676987)
610 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
611 the system where on the filesystem the SBCL sources themselves are
612 located. (Thanks to Zach Beane)
613 * enhancement: the compiler is now able to derive tighter bounds for
614 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
615 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
616 correctly, even on wide-fixnum builds. (lp#887220)
617 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
618 resolved to directories.
619 * bug fix: type mismatch when assigning to lexical variables no longer
620 result in fasl-dumping internal type objects. (lp#890750)
621 * bug fix: type mismatch on (SETF AREF) and function return values no
622 longer result in fasl-dumping internal type objects.
623 * bug fix: With several combinations of argument types, for example (EXPT
624 <integer> <(complex double)>), EXPT now uses double-precision throughout
625 instead of partially calculating only to single-precision. (lp#741564;
626 thanks to Lutz Euler)
627 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
628 objects when interrupted by GC on PPC.
630 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
631 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
632 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
633 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
634 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
635 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
636 targets is now 63 bits (up from 61).
637 * enhancement: DESCRIBE now reports a lambda-list and source location
638 for complext setf-expanders.
639 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
640 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
641 of multiple-valued places to be set to NIL, instead of signalling an
642 error (per a careful reading of CLHS 5.1.2.3).
643 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
644 * bug fix: repair crash in x86oid darwin signal handling emulation
645 when built with certain compilers.
646 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
647 rotation arguments on x86-64. (lp#882151)
648 * bug fix: low-level control flow optimisations could result in bogus
649 code in functions with tail and non-tail calls to local functions on
651 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
652 to emit literal characters > (code-char 4095), for comparisons with
654 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
655 on 64 bit platforms. (lp#881445)
656 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
657 delete the wrong file when using relative pathnames. (lp#882877)
658 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
659 sequences and :KEY NIL.
661 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
662 * enhancement: ASDF has been updated to version 2.017.
663 * enhancement: the --core command line option now accepts binaries with
665 * enhancement: when built with :sb-core-compression, core files (regular
666 or executable) can be compressed with zlib. Use the :COMPRESSION
667 argument to SAVE-LISP-AND-DIE to specify a compression level.
668 * enhancement: --[no-]merge-core-pages determines whether the runtime
669 hints the operating system that identical core pages between SBCL
670 processes should share the same physical memory. Default is to only
671 enable this for compressed cores.
672 * optimization: SLEEP no longer conses.
673 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
674 or bit-vectors when using the standard pretty-print dispatch table.
675 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
677 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
678 AREF, CHAR, etc. (lp#826971)
679 * bug fix: compiler-errors causes by integer arguments with composed of
680 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
681 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
682 expressions. (lp#770184)
683 * bug fix: complex single float literals are correctly aligned when used
684 as arguments of arithmetic operators.
685 * bug fix: on 32-bit platforms, rounding of double floats larger than a
686 fixnum is correct. (reported by Peter Keller)
687 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
688 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
690 * bug fix: redefining classes such that slots with custom allocation are
691 added or removed works again.
693 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
694 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
695 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
696 MAKE-SOCKET-STREAM if using SERVE-EVENT.
697 * enhancement: added support for socket keepalive timeout intervals
698 and probe counts on Linux.
699 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
700 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
701 * enhancement: added new toplevel options --quit and --non-interactive
703 * enhancement: the Windows port of SBCL now builds and runs on Wine
704 (thanks to Anton Kovalenko).
705 * enhancement: more, and more correct, SSE instruction definitions on
706 x86-64 (thanks to Alexander Gavrilov).
707 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
708 to help the processor execute spin loops, when applicable. Currently
709 implemented for x86 and x86-64.
710 * optimization: unsigned integer divisions by a constant are implemented
711 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
712 * optimization: improved type-derivation for LOAD-TIME-VALUE.
713 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
714 instructions. (lp#814688)
715 * bug fix: COERCE to unfinalized extended sequence classes now works.
716 (reported by Jan Moringen; lp#815155)
717 * bug fix: a compiler error during typecheck generation, reported by Eric
719 * bug fix: obsolete instance protocol fires when shared slots are added
721 * bug fix: fixed-format floating point printing with scaling factors.
723 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
724 backtraces. (lp#818460)
725 * bug fix: better backtraces for interrupted syscall frames on x86.
727 * bug fix: SSE comparison instructions can be disassembled even when one
728 operand is in memory. (lp#814702)
729 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
730 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
731 type information associated with the VALUES form.
732 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
734 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
735 first write (lp#561642).
736 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
737 * bug fix: bound propagation involving conversion of large bignums to
738 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
740 * bug fix: &REST to &MORE conversion still works in unsafe call to known
741 functions; reported by Lutz Euler (lp#826459).
742 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
745 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
746 * enhancement: errors from FD handlers now provide a restart to remove
747 the offending handler.
748 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
750 * enhancement: location of user or system initialization file can now easily
751 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
752 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
753 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
754 the thunk, as a keyword argument, :arguments.
755 * enhancement: constraint propagation is simplified (and sped up) when
756 COMPILATION-SPEED > SPEED.
757 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
758 * enhancement: debugger understands &MORE arguments better.
759 * optimization: extracting bits of a single-float on x86-64 has been
760 optimized. (lp#555201)
761 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
762 when (> SPEED SPACE).
763 * optimization: local call trampolines (x86 and x86-64) are emitted
765 * optimization: implicit value cells for dynamic-extent closed-over bindings
766 on x86 and x86-64 can hold unboxed values as well.
767 * meta-optimization: improved compilation speed, especially for large
768 functions. (lp#792363 and lp#394206)
769 * bug fix: bound derivation for floating point operations is now more
770 careful about rounding possibly closing open bounds. (lp#793771)
771 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
772 backwards incompatible change in 1.0.48.27)
773 * bug fix: occasional debugger errors in when a type-error occured in a
774 function with dynamic-extent &rest list.
775 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
776 boa-construtors can be used to initialized structure slots.
777 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
778 (lp#795705, regression)
779 * bug fix: DIRECTORY works better on logical pathnames.
780 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
781 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
782 * bug fix: the compiler no longer constant-folds NaNs in
783 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
784 * bug fix: FORMAT now handles floating point rounding correct, eg.
785 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
787 * bug fix: style warning during lambda-list introspection of generic
788 functions with both optional and key argments.
789 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
791 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
794 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
795 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
796 interrupts for its body.
797 * enhancement: source locations are now available for files loaded as
798 source, compile-time-too evaluation, and initialization files.
799 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
800 virtual source-file information, eg. overriding input-file of COMPILE-FILE
801 when a temporary file is used for compilation.
802 * enhancement: ASDF has been updated to version 2.015.3.
803 * enhancement: backtraces involving frames from the default evaluator are
805 * enhancement: RUN-PROGRAM works with user-defined binary input and output
807 * enhancement: more informative compile-time warnings and runtime errors for
808 type-errors detected at compile-time.
809 * enhancement: deadlock detection for mutexes and spinlocks.
810 * enhancement: dynamic-extent for &rest lists stack allocate only their
811 spines, not their argumets. While portable code should not rely on this,
812 particularly in combination with inlining, it should make dynamic-extent
813 easier to use safely.
814 * enhancement: SB-POSIX improvements:
815 ** WNOHANG and WUNTRACED are exported.
816 ** SYSCALL-ERROR now also provides the name of the failing system call.
817 * enhancement: --script improvements:
818 ** errors on standard input, output, and error streams are handled and
819 cause scripts to exit silently, making them easier to use in shell
821 ** backtraces from scripts now go to standard error instead of the
822 terminal even if one is available.
823 ** --script can be an argument, causing the script to be loaded from
825 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
826 strings to foreign memory.
827 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
828 a file, making it easier to understand heap dynamics.
829 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
830 allows the compiler to automatically elide rest-list allocation so long as
831 the call sites are in functions that the compiler knows cannot escape.
833 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
834 especially in safe code when none of the required arguments have changed
836 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
837 uninterruptible, as well as blocking reads from socket streams created
838 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
839 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
840 from the to-char if the from-char is not a dispatch-macro character.
841 * bug fix: references to undefined variables in function calls that are
842 optimized away now signal a runtime error. (lp#722734)
843 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
844 types from a function defined in the same file. (regression from
846 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
848 * bug fix: spurious errors during QUIT when standard streams were closed.
850 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
851 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
852 years, is now no longer supported.
853 * enhancement: read() and write() have been added to SB-POSIX.
854 * enhancement: types of DEFSTRUCT constructors are proclaimed more
855 accurately, allowing better typechecking of call-sites.
856 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
857 are no longer caught. (reverted to pre 1.0.34 behaviour)
858 * optimization: slightly faster ISQRT. (lp#713343)
859 * bug fix: better support for Solaris /bin/sh in sh-based tests.
860 * bug fix: TRACE behaves better when attempting to trace undefined
861 functions. (lp#740717)
862 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
863 to (FUNCALL #'(LAMBDA ...) ...).
864 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
865 a compile-time error. (lp#720382)
866 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
868 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
869 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
870 optimization. (regression from 1.0.45.18/1.0.46.15)
871 * bug fix: package locks did not protects against compile-time side-effects
872 of DEFUN. (lp#675584)
873 * bug fix: --dynamic-space-size argument is validated more carefully.
875 * bug fix: memory fault from printing a malformed simple-condition.
877 * bug fix: redefining classes so that slot-definition classes change now
878 engages the obsolete instance protocol. (lp#766271)
879 * bug fix: constant improper lists could break source coverage recording.
881 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
884 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
885 * bug fix: fix mach port rights leaks in mach exception handling code on
886 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
888 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
889 * enhancement: redefinition warnings for macros from different files. (lp#434657)
890 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
891 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
892 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
893 processed using EVAL -- now the appropriate toplevel form is reported instead.
894 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
895 declarations. (lp#726331)
896 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
897 that NIL/NULL is excluded from the type.
898 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
900 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
902 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
903 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
904 stack-allocated values out of their dynamic-extent. (lp#310175)
905 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
906 x86-64 builds caused a type-error.
907 * bug fix: calling COMPILE with something else than a lambda-expression as the
908 second argument reports a more sensible error. (lp#718905)
909 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
910 are detected. (lp#520607)
911 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
913 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
914 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
915 methods. (regression from 1.0.45.18)
916 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
917 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
918 * bug fix: several foreign functions accepting string also accepted NIL and
919 consequently caused a memory fault at 0 now signal a type-error instead.
921 * bug fix: under rare circumstances, constraint propagation could rewrite a
922 variable reference to refer to a variable not in scope, causing an error
923 during physical environment analysis when attempting to close over the
924 variable. (lp#551227)
925 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
927 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
928 * enhancement: largefile support on Solaris.
929 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
930 arguments (lp#710017)
931 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
932 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
934 * optimization: ERROR and CERROR are approximately 5 times faster.
935 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
936 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
937 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
938 up instance creation in those cases.
939 * optimization: arithmetic operations with multiple constant arguments in now
940 have them reduced at compile-time. (lp#676414)
941 * optimization: determining current character position on string-streams for
942 pretty-printing was overly slow.
943 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
944 lifetime analysis to overwrite closed-over variables (lp#681092).
945 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
946 were not handled correctly (lp#713063).
947 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
949 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
950 mistake. (lp#667297).
951 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
952 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
953 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
954 unintern the wrong symbol with the same name. (lp#693796)
955 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
956 making it possible to restore the initial table if it has been messed up.
959 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
960 * enhancement: ~/ and ~user/ are treated specially in pathnames.
961 Refer to documentation for details.
962 * enhancement: ASDF has been updated to version 2.010.
963 * optimization: mutated closed-over variables that are only accessed by
964 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
965 declared to be DYNAMIC-EXTENT) are stored directly in their containing
966 stack frame, rather than allocating a VALUE-CELL (lp#586103).
967 * optimization: UNWIND-PROTECT cleanup functions are now declared
969 * bug fix: backtracing function with &REST arguments now shows the full
970 argument list. (lp#310173)
971 * bug fix: return types for functions with complex lambda-lists are now
972 derived properly (lp#384892)
973 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
974 long string arguments slowed the compiler down to a crawl.
975 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
976 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
977 in the DEFMETHOD body.
978 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
979 messages, being instead replaced with the corresponding function name.
980 * bug fix: don't derive overly complex unions of numeric types for arithmetic
981 operators. (lp#309448)
983 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
984 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
985 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
986 * enhancement: ALLOCATION-INFORMATION also provides the page the object
988 * enhancement: default dynamic-space size can be configured at build-time
989 without touching source, using the --dynamic-space-size argument to make.sh.
990 * enhancement: DESCRIBE recognizes symbols naming optimization policy
991 qualities, and mentions ALWAYS-BOUND declarations.
992 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
994 * enhancement: ASDF has been updated to 2.009.
995 * enhancement: the system detects known type-erros in calls better,
996 signalling a full warning about violated proclaimed FTYPEs and violations
997 of derived FTYPEs within the same file, including self-calls.
998 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
999 * optimization: constant-folding exploits numeric and character types, in
1000 addition member types.
1001 * optimization: numeric, character and member types that are inhabited by
1002 exactly one value are tested with EQL.
1003 * optimization: more conditional branches are eliminated during IR1.
1004 Branches are simplified before performing if/if-conversion, and simple
1005 equivalent branches (that only read the same constant or variable) are
1007 * improvements to the Windows port:
1008 ** change: canonical unparsing form for pathname namestrings now uses / as
1009 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
1010 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
1011 on Windows. (thanks to Kalyanov Dmitry)
1012 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
1014 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
1015 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
1016 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
1017 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
1019 * bug fix: interrupts arriving during CL:OPEN caused an error.
1020 * bug fix: overeager character buffering could cause input to block
1021 spuriously when reading from a pipe (lp#643686)
1022 * bug fix: more efficient timer expiry should avoid starvation on systems
1023 where number of SIGALRMs per second is restricted. (lp#375515)
1024 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
1025 * bug fix: compile-times no longer scale linearly with the size of
1026 quoted lists in source-code. (lp#654289)
1027 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
1028 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
1029 so badly. (lp#654485)
1030 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
1031 an error for eg. STRUCTURE. (lp#458015)
1032 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
1033 (lp#613871, thanks to Roman Marynchak)
1034 * bug fix: more reliable &REST list type derivation. (lp#655203)
1035 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
1036 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
1037 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
1038 also declared NOTINLINE. (lp#655581)
1039 * bug fix: the compiler could attempt to emit constant left shifts of
1040 greater value than n-word-bits. (lp#309063)
1041 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
1042 type information for the function being set. (lp#659220)
1043 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
1044 containing self-calls were recompiled with a new signature, and failed
1045 to warn when a self-call using the old signature was left in. (lp#655126)
1046 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
1047 :DEFAULT when the default external had character size other than 8 bits.
1049 * bug fix: derived types of functions in the same file were implicitly
1050 trusted, leading to potential heap corruption when those function were
1051 defined incompatibly. (lp#657499)
1052 * bug fix: existing ASDF source registries are ignored when building
1053 contribs (lp#659105)
1054 * bug fix: short-form DEFSETF checks that the second argument is a symbol
1055 (lp#655824, thanks to Roman Marynchak)
1056 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
1057 package-lock violation was detected. (lp#660752)
1058 * bug fix: the system can store different docstrings for a single function
1059 under different names. (lp#661631, regression from 1.0.29.24)
1060 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
1061 properly. (lp#384801)
1062 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
1063 of specified length could confuse the type derivation in unsafe code.
1065 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1066 fork with multiple Lisp threads running is made on every platform,
1067 not just Darwin. (lp#451111)
1068 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1069 around when core was saved, which could cause undefined behaviour when the
1071 * bug fix: Allow UNTRACE of functions that are no longer defined
1072 (lp#667657, thanks to Attila Lendvai)
1073 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1074 compile-time warning (lp#664373, thanks to Stas Boukarev)
1076 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1077 * incompatible change: FD-STREAMS no longer participate in the serve-event
1078 event-loop by default. (lp#316072)
1079 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1080 affects streams from CL:OPEN.
1081 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1082 default, but this is liable to change: applications needing serve-event
1083 for socket streams should explicitly request it using :SERVE-EVENTS T
1085 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1087 * enhancement: CLOS effective method functions and defclass slot typechecking
1088 function now have debug names for use in backtraces and profiles.
1089 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1091 * enhancement: symbols are printed using fully qualified names in several
1092 error and warning messages which are often associated with package
1093 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1094 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1095 thanks to Andrew Golding)
1096 * bug fix: reading /proc files on Linux works. (lp#425199)
1097 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1099 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1100 breaking code that tried to write the value of a printer control variable.
1101 (lp#581564, thanks to Stas Boukarev)
1102 * bug fix: WRITE compiler macro did not handle output stream designators
1103 correctly. (lp#598374, thanks to Stas Boukarev)
1104 * bug fix: better availability of names of foreign functions in backtraces
1105 on Linux. (lp#626962, thanks to Stas Boukarev)
1106 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1107 lp#627581, thanks to Josh Elsasser and Jim Wise)
1108 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1109 thanks to Josh Elsasser)
1110 * bug fix: using aliases for builtin classes as defmethod specializers
1111 without adding DEFTYPEs for them works. (lp#618387)
1112 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1114 * bug fix: legally dynamic-extent lists and vectors used as
1115 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1116 * bug fix: inline-expansion creating references to dead lambda-variables
1117 (lp#454681, thanks to Alexey Dejneka)
1118 * bug fix: better error message for bogus numerical arguments to RANDOM.
1119 (lp#598986, thanks to Stas Boukarev)
1120 * bug fix: the compiler occasionally inlined references from incompatible
1121 environments occurs. (lp#308951)
1122 * bug fix: the compiler threw an error when trying to compile a local
1123 function (labels or flet) known to take a specialized complex argument.
1124 (not in launchpad, reported by sykopomp in #lispgames)
1125 * bug fix: package-locks failed to protect against compile-time effects of
1126 DEFUN when the symbol previously had a macro definition. (lp#576637)
1127 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1128 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1129 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1130 * bug fix: evaluation in debugger REPL works using the global context when
1131 in frames that do not have sufficient debug information.
1132 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1134 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1136 * bug fix: interrupt taking longer than the requested period caused SLEEP
1137 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1139 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1141 ** Cross-compilation host is now specified to make.sh using
1142 command-line argument --xc-host=<command> instead of a positional
1143 argument. (thanks to Daniel Herring)
1144 ** Install location can be specified to make.sh using command-line
1145 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1146 * optimization: The default implementation of
1147 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1148 * enhancement: Explicit memory barrier operations are now available for use
1149 by multithreaded code. See documentation for details.
1150 * enhancement: Experimental support for threading on Linux/PPC.
1151 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1152 * bug fix: EXPT signals an error if first argument is a zero and second
1153 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1154 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1155 (lp#576594, thanks to Roman Marynchak)
1156 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1157 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1159 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1160 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1161 cached, leading to many fewer expensive calls to
1162 COMPUTE-APPLICABLE-METHODS.
1163 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1164 CLASS argument, search for and call an appropriate optimized ctor function
1166 * bug fix: WRITE always returns the correct value.
1168 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1169 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1170 * bug fix: Name conflicts between symbols passed as arguments to a single
1171 call to IMPORT no longer add multiple symbols with the same name to the
1172 package (detectable via DO-SYMBOLS).
1173 * bug fix: support building without the dlshim on darwin x86 and x86-64
1175 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1177 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1178 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1180 * bug fix: linkage-table entries on PPC now no longer overflow their
1181 space allocation (potentially causing crashes if they are written out
1183 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1184 platforms, preventing the GC from seeing stale pointers on the control
1185 stack in subsequent GCs (which would, and does, break invariants).
1186 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1187 * bug fix: Literal characters with code points greater than about 32767
1188 now work on PPC UNICODE builds.
1189 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1190 high order bits are explicitly cleared out. In some contrived situations,
1191 this could lead to wrong results in mixed real/complex float arithmetic.
1192 * bug fix: Fix function/macro redefinition warnings when building with
1193 clisp. (lp#576787, thanks to Josh Elsasser)
1194 * new platform: experimental support for ppc/openbsd (thanks to Josh
1196 * bug fix: Floating-point traps now work on ppc/linux.
1198 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1199 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1200 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1201 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1202 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1203 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1204 SB-THREAD:GRAB-MUTEX.
1205 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1206 contain additional data structures and tools for concurrent programming;
1207 at the moment it contains a lock-free queue, and a lock-free mailbox
1209 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1210 GET-MUTEX but takes &key rather than &optional parameters. Also added
1211 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1213 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1214 SB-THREAD:WAIT-ON-SEMAPHORE.
1215 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1217 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1218 conditions to defer the deadline for forever.
1219 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1221 * enhancement: errors from NO-APPLICABLE-METHOD and
1222 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1223 generic function call.
1224 * enhancement: SB-BSD-SOCKET improvements
1225 ** sockets and socket streams now have a more informative printed
1226 representation based on the corresponding SOCKET-NAME and
1228 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1230 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1231 CL:CLOSE when appropriate, and no longer disassociates the stream
1232 from the socket if close failed. (lp#543951)
1233 * improvements to the instrumenting profiler
1234 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1235 ** optimization: counters no longer use locks for the overflow mode.
1236 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1237 incurred an off-by-one miscount.
1238 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1239 * enhancement: improved DEFMETHOD pretty-printing.
1240 * enhancement: perform range reduction when arguments are too large for
1241 x87's transcendentals (instead of returning 0). (lp#327192)
1242 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1243 some of CL-PPCRE's macros. (lp#570079)
1244 * enhancement: our machine code is slightly less hostile to valgrind on
1246 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1247 to Robert Swindells and Aleksej Saushev)
1248 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1249 * bug fix: a rare case of startup-time page table corruption.
1250 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1251 to timeouts could be left in an inconsistent state.
1252 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1253 * bug fix: misoptimization of multiplication by one in
1254 (SB-C::FLOAT-ACCURACY 0) policies.
1255 * bug fix: miscounts in SB-PROFILE.
1256 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1257 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1258 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1259 up itself" (March 2010) for further details.
1260 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1261 against length of the list if the element is found before the specified
1262 END is reached. (thanks to Alec Berryman, lp#554385)
1263 * bug fix: errors signalled during package graph modification no longer
1264 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1265 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1266 :SB-DOC feature. (lp#552564)
1267 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1268 * bug fix: more robust runtime executable path detection. (lp#375549)
1269 * bug fix: GCD always returns positive values. (lp#413680)
1270 * bug fix: Converting division to multiplication by reciprocal handles
1272 * bug fix: We were too eager in eliding range reduction tests on x87.
1273 The maximal magnitude is 2^63, not 2^64.
1274 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1276 * bug fix: Maybe restore buildability on Alpha.
1277 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1279 * bug fix: RANDOM-STATE can be printed readably again.
1280 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1281 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1282 types) could result in type mismatches during compilation.
1284 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1285 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1286 stack frame thrown from.
1287 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1288 compiler optimization qualities inside dynamic extent of its body.
1289 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1290 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1292 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1293 constraint propgation, allowing better compilation eg. when used to
1294 access structures with WITH-SLOTS. (lp#520366)
1295 * optimization: the compiler is now more aware of the type of the underlying
1296 storage vector for multidimensional simple arrays resulting in better code
1297 for accessing such arrays.
1298 * optimization: passing NIL as the environment argument to TYPEP no longer
1299 inhibits optimizing it. (lp#309788)
1300 * optimization: more efficient register usage when handling single-float
1301 arguments on x86-64. (thanks to Lutz Euler)
1302 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1303 pre-allocated temporary vectors. (lp#496249)
1304 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1305 in :INITIAL-CONTENTS. (lp#523612)
1306 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1307 functions. (lp#524707)
1308 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1309 WITH-SLOTS usages during compilation.
1310 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1311 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1312 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1313 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1314 instruction (tested on x86oid linux with ud2-breakpoints).
1315 * bug fix: slam.sh now works on win32.
1316 * bug fix: better differences of numeric types. (lp#309124)
1317 * bug fix: arrays declared intersection and union types can have their
1318 upgraded element type derived. (lp#316078)
1319 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
1320 threads started during profiling. (lp#472499)
1321 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
1323 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
1324 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
1325 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
1326 values instead of signaling an error. (lp#309093)
1327 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
1329 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
1330 declarations (lp#497321)
1331 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1332 and failed to detect circular lists (lp#452008)
1333 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1335 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1336 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1337 due to it, so that handlers can run.
1338 * bug fix: reparsing undefined types if they have become defined since
1339 parsing. (lp#309128)
1340 * bug fix: missing &REST type in a proclamation for a function with both
1341 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1342 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1343 expanded calls (lp#542174)
1344 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1345 than just at toplevel form.
1347 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1348 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1349 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1350 but work on type specifiers.
1351 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1352 to name a type specifier.
1353 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1354 specifier is valid where "valid" basically means "would be accepted as
1355 second argument of TYPEP".
1356 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1357 returns the function's declared, or derived FTYPE.
1358 * new feature: SB-POSIX now supports accessing the d_ino member of
1359 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1360 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1361 provide for seeding a RANDOM-STATE object with user-provided data or
1362 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1363 attempt to initialize the returned state from the operating system's
1364 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1365 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1366 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1367 * bug fix: Fix grammar and style issues for the docstrings of
1368 printer-related variables and functions. (Thanks to mon_key; launchpad
1370 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1372 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1373 in a row even though a handler defered the deadline long into the
1375 * bug fix: A deadline handler was run without interrupts enabled for a
1376 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1377 in infinitely spinning, non-killable threads.
1378 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1379 before reaching the erring stack frame.
1380 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1381 real power. (launchpad bug lp#525949)
1382 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1383 GENCGC platforms. (launchpad bug lp#529014)
1384 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1385 (launchpad bug lp#525916)
1386 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1387 (Thanks to Robert Goldman)
1389 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1390 * optimization: ROUND with a single single-float or double-float argument
1391 is properly inlined when possible.
1392 * optimization: Slightly better code is generated for integer<->float
1393 conversions and for single-float<->double-float conversions on x86-64.
1394 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1395 code for 32-bit and 64-bit rotations on x86-64.
1396 * bug fix: The install script changes the ownership of directories as well
1397 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1398 launchpad bug lp#508485)
1399 * bug fix: TRUNCATE with a single single-float or double-float argument is
1400 properly inlined when possible. (launchpad bug lp#489388)
1401 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1402 no longer causes a compiler error on x86 and ppc.
1403 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1404 always relative to *READTABLE* rather than the passed argument.
1406 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1407 * minor incompatible change: threading support is now enabled by default
1409 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1411 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1412 are now caught and reported just like errors during macroexpansion.
1413 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1414 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1415 * enhancement: ASDF systems can now depends on SB-QUEUE.
1416 * fixes and improvements related to Unicode and external formats:
1417 ** bug fix: error handling and restart usage in the ucs-2 external format
1419 ** there is now an implementation of the ucs-4 external format.
1420 ** the utf-16 and utf-32 external formats are supported.
1421 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1422 in the environment. setenv() and unsetenv() are also provided. (reported by
1423 Fare Rideau; launchpad bug lp#460455)
1424 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1425 loading. This ensures sensible errors for .FASL files from other
1426 implementations on case-insensitive filesystems. (reported by Willem
1427 Broekema; launchpad bug lp#489417)
1428 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1429 Willem Broekema; launchpad bug lp#489698).
1430 * bug fix: some minor code rearrangements to reenable warning-free building
1431 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1432 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1434 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1437 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1438 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1439 * improvement: support O_LARGEFILE access to files larger than 2GB on
1440 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1441 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1442 definitions for methods specializing on the passed class itself.
1443 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1444 definitions for methods specializing on the passed class itself, or on
1446 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1447 about itself during the build (e.g. for M-? in Slime), if this flag is
1448 enabled in customize-target-features.lisp. This will increase the core
1449 size by about 5-6mb, though, so it's mostly interesting to SBCL
1451 * new feature: various GENCGC tuning parameters have been experimentally
1452 documented and exported from SB-EXT. See documentation for details.
1453 * fixes and improvements related to Unicode and external formats:
1454 ** the Unicode character database has been upgraded to the
1455 Unicode 5.2 standard, giving names and properties to a number of new
1456 characters, and providing a few extra characters with case
1458 ** improvement: restarts for providing replacement input/output on coding
1459 errors for fd-stream external formats.
1460 ** improvement: where :<encoding> is a keyword corresponding to an
1461 external format the system supports, it is now possible to specify
1462 (:<encoding> :replacement <character>) as an external format which will
1463 automatically substitute <character> on encoding or decoding errors for
1464 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1466 ** improvement: the file streams underlying the standard streams (such as
1467 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1468 which uses the replacement mechanism to handle encoding errors,
1469 preventing various infinite error chains and unrecoverable I/O
1471 ** minor incompatible change: the utf-8 external format now correctly
1472 refuses to encode Lisp characters in the surrogate range (char-codes
1473 between #xd800 and #xdfff).
1474 ** fix a typo preventing conversion of strings into octet vectors
1475 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1477 ** fix a bug in the octet multibyte handling of decoding errors and the
1478 USE-VALUE restart. (launchpad bug lp#314939)
1479 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1480 restart on fd-stream decoding errors.
1481 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1482 error is near the end of file.
1483 ** fix a double-error case in unibyte octet conversions, when the first
1484 use of USE-VALUE is ignored.
1485 ** fix bugs in handling of undefined code points in unibyte encodings.
1486 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1487 streams after an UNREAD-CHAR.
1488 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1489 object is allocated in a boxed region of dynamic space.
1490 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1491 fork with multiple Lisp threads running is made, instead of going
1492 ahead with unpredictable consequences. (reported by Leslie Polzer)
1493 * bug fix: uses of slot accessors on specialized method parameters within
1494 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1495 error while finalizing the class. This fix may cause classes with slot
1496 accessors to be finalized later than previously. (reported by Lars Rune
1497 Nøstdal; launchpad bug lp#473699)
1498 * bug fix: restore buildability on the MIPS platform. (regression from
1499 1.0.30.38, reported by Samium Gromoff)
1500 * bug fix: inspecting closures is less likely to fail with a type error.
1501 * bug fix: no timer starvation when setting the system clock back.
1502 (launchpad bug lp#460283)
1503 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1504 standard pprint dispatch table as specified by CLHS.
1505 * bug fix: give CLISP a hint about a type declaration to enable it to build
1506 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1508 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1509 (reported by Attila Lendvai; launchpad bug lp#310132)
1510 * bug fix: distinguish in type specifiers between arrays that might be
1511 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1512 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1513 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1514 * bug fix: setting the value of a symbol-macro within a method in the
1515 presence of type declarations works properly again. (reported by Iban
1516 Hatchondo; launchpad bug lp#485019)
1518 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1519 * optimization: faster FIND and POSITION on strings of unknown element type
1520 in high SPEED policies. (thanks to Karol Swietlicki)
1521 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1523 * improvement: better error signalling for bogus parameter specializer names
1524 in DEFMETHOD forms (reported by Pluijzer)
1525 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1527 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1529 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1530 removes previous default initargs (reported by Lars Rune Nøstdal and
1532 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1533 lambda-lists. (reported by Peter Seibel)
1534 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1535 correctly when starting from an executable core without saved runtime
1536 options (reported by Faré Rideau, thanks to Zach Beane)
1537 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1538 an optimization note instead. (reported by Martin Cracauer)
1539 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1540 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1541 new process group if it doesn't need to share stdin with the sbcl
1542 process. (thanks to Leslie Polzer)
1543 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1544 (reported by Stanislaw Halik)
1546 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1547 * improvement: stack allocation is should now be possible in all nested
1548 inlining cases: failure to stack allocate when equivalent code is manually
1549 open coded is now considered a bug.
1550 * improvements related to Unicode:
1551 ** the Unicode character database has been upgraded to the
1552 Unicode 5.1 standard, giving names and properties to a number of new
1553 characters, and providing a few extra characters with case
1555 ** the system now recognizes and produces names for Unicode Hangul
1556 syllable characters.
1557 ** the EBCDIC-US external-format is now supported for octet operations
1558 (as well as for stream operations).
1559 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1560 be used to output toplevel compile-time effects into a separate .CFASL
1562 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1563 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1565 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1567 * optimization: division of floating point numbers by constants uses
1568 multiplication by reciprocal when an exact reciprocal exists.
1569 * optimization: multiplication of single- and double-floats floats by
1570 constant two has been optimized.
1571 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1572 sufficient type information is available. (thanks to Leslie Polzer)
1573 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1574 known structure objects are as efficient as defstruct generated accessors.
1575 * optimization: unused vector creation can now be optimized away.
1576 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1577 * improvement: a STYLE-WARNING is signalled when a generic function
1578 clobbers an earlier FTYPE proclamation.
1579 * improvement: the compiler is able to track the effective type of
1580 generic function across method addition and removal even in the
1581 absence of an explicit DEFGENERIC.
1582 * improvement: DESCRIBE now reports on symbols naming undefined
1583 but assumed or declared function as well.
1584 * improvement: recompilation of systems using SB-GROVEL now works
1585 (thanks to Leslie Polzer)
1586 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1587 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1589 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1590 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1591 well as user defined declaration names.
1592 ** VARIABLE-INFORMATION is now aware of alien variables.
1593 * improvement: improved address space layout on OpenBSD (thanks to Josh
1595 * improvement: pretty-printing of various Lisp forms has been improved
1596 (thanks to Tobias Rittweiler)
1597 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1598 unused were deleted in safe code. (reported by John Fremlin)
1599 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1601 * bug fix: some out-of-line array predicates were missing (reported by
1603 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1605 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1606 (thanks to Larry D'Anna)
1607 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1608 as well. (reported by Josh Elsasser)
1609 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1610 leading to possible attempts to delete the same file twice. See docstring
1611 on DELETE-FILE for details. (reported by John Fremlin)
1612 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1613 designator argument, rather than its truename. (reported by Luis
1615 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1616 information about some array types. (thanks to Luis Oliveira)
1617 * bug fix: moderately complex combinations of inline expansions could
1618 be miscompiled if the result was declared to be dynamic extent.
1619 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1620 form (+ <variable> <integer>) were miscompiled under certain
1622 * bug fix: in some cases no compiler note about failure to stack allocate
1623 was emitted, even if the objects were in fact heap allocated.
1624 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1625 allocation could cause objects users might reasonably expect to
1626 be heap allocated to be stack allocated.
1627 * bug fix: DESCRIBE signalled an error for generic functions under
1628 certain circumstances. (thanks to Leslie Polzer)
1629 * bug fix: Fixed spelling of an error message.
1631 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1632 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1633 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1634 of SB-THREAD:THREAD-ERROR-THREAD.
1635 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1636 * new feature: docstrings for local and anonymous functions are no longer
1637 discarded. (thanks to Leslie Polzer)
1638 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1639 values in other threads.
1640 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1641 about object allocation.
1642 * optimization: division of a real float by a complex float is implemented
1643 with a specialised code sequence.
1644 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1645 keywords is an order of magnitude faster.
1646 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1647 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1648 methods, and similarly for non-standard metaclass classes as long as there
1649 are no methods additional on MAKE-INSTANCE.
1650 * optimization: more efficient type-checks for FIXNUMs when the value
1651 is known to be a signed word on x86 and x86-64.
1652 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1653 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1655 * optimization: compiler is smarter about delegating argument type checks to
1657 * optimization: several character functions are now compiled somewhat more
1658 efficiently. (reported by Lynn Quam)
1659 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1660 * improvement: less unsafe constant folding in floating point arithmetic,
1661 especially for mixed complex/real -float operations.
1662 * optimization: constant double and single floats are stored in native
1663 unboxed format on x86[-64].
1664 * optimization: smarter code for arithmetic operations with constant floats,
1665 complex floats, or integers on x86[-64].
1666 * optimization: smarter code for conjugate/multiplication of float complexes
1667 and abs/negate of floats on x86-64.
1668 * optimization: more efficient complex float and real float operations on
1670 * improvement: complex float division is slightly more stable.
1671 * improvement: DESCRIBE output has been reworked to be easier to read and
1672 contains more pertinent information.
1673 * improvement: failure to provide requested stack allocation compiler notes
1674 provided in all cases (requested stack allocation not happening without a
1675 note being issued is now considered a bug.)
1676 * bug fix: SB-POSIX exports the documented types and functions
1677 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1678 types. (reported by "abhi")
1679 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1680 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1681 (thanks to Paul Khuong)
1682 * bug fix: looping around HANDLER-CASE could silently consume stack space
1683 on each iteration. (reported by "foobar")
1684 * bug fix: better error signalling when calls to functions seeking elements
1685 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1686 (reported by Tobias Rittweiler)
1687 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1688 directory components now works as it used to. (various prolems reported by
1689 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1690 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1691 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1692 * bug fix: bogus undefined variable warnings from fopcompiled references to
1693 global variables. (thanks to Lars Rune Nøstdal)
1694 * bug fix: foreign function names should now appear in backtraces on
1695 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1696 * bug fix: SETF compiler macro documentation strings are not discarded
1698 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1699 (thanks to Alex Plotnick)
1700 * bug fix: SLEEP accepts large integer arguments, truncating them to
1701 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1702 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1703 * bug fix: compiler notes for expensive slot type checks could be emitted
1704 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1706 changes in sbcl-1.0.29 relative to 1.0.28:
1707 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1708 https://bugs.launchpad.net/sbcl
1709 Bugs can be reported directly there, or by sending email to
1710 sbcl-bugs@lists.sourceforge.net
1711 (no subscription required.)
1712 * minor incompatible change: under weak type checking policy integer
1713 types are weakened less aggressively.
1714 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1715 allowed to return, which causes SBCL to quit with exit status 0. Previously
1716 if the function returned with a small integer return value, that value
1717 was accidentally reused as the exit status.
1718 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1719 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1720 :HASH-FUNCTION argument. Refer to user manual for details.
1721 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1723 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1724 microseconds since the Unix epoch on all platforms.
1725 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1726 allows the compiler to safely elide boundedness checks for special
1728 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1729 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1730 efficiency measure for threaded platforms, but also valueable in
1732 * new feature: UNC pathnames are now understood by the system on Windows.
1733 * optimization: the compiler uses a specialized version of FILL when the
1734 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1736 * optimization: accesses to potentially non-simple arrays where element type
1737 is known are 50% faster.
1738 * optimization: compiler now generates faster array typechecking code.
1739 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1741 * optimization: multidimensional array accesses in the absence of type
1742 information regarding array rank are approximately 10% faster due to
1743 open coding of ARRAY-RANK.
1744 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1745 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1747 * optimization: result of call to VECTOR can now be stack allocated.
1748 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1749 as long as the resulting array is one-dimensional and has a known
1750 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1751 length of the list matches the known length of the vector does not
1752 allocate the list as an intermediate step. Ditto for VECTOR and simple
1754 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1755 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1756 known element type, and is known to be simple and one dimensional.
1757 * improvement: SBCL now emits a compiler note where stack allocation was
1758 requested but could not be provided (not in all cases, unfortunately)
1759 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1760 * improvement: pretty-printing loop has been implemented properly. (thanks
1761 to Tobias Rittweiler)
1762 * documentation: CLOS slot typechecing policy has been documented.
1763 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1764 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1765 pointer, leading to memory faults. (thanks to Bart Botta)
1766 * bug fix: better floating point exception handling on x86/OpenBSD.
1767 (thanks to Josh Elsasser)
1768 * bug fix: exit status from QUIT when called under --script was lost
1769 (reported by Hubert Kauker)
1770 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1771 same implementation of FILL to initialize the array, even if a more
1772 efficient one was available (reported by Stas Boukarev, thanks to
1774 * bug fix: potential miscompilation of array stack allocation on x86 and
1775 x86-64. (reported by Time Tossavainen)
1776 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1777 result in their subforms being treated as top level forms. (reported by
1779 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1780 than a machine register could leave garbage in the high bits of the
1781 result register (bug 316325).
1782 * bug fix: disable address space randomization Linux/x86-64 as well,
1783 not just x86-64. (reported by Ken Olum)
1784 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1785 generate incorrect code.
1786 * bug fix: #201; type inference for CONS and ARRAY types could derive
1787 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1788 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1789 could not be assigned to or bound with PROGV. (reported by Lorenz
1791 * bug fix: the value of CL:- in the inspector was the previous expression
1792 evaluated rather than the expression being evaluated.
1793 * bug fix: constants can no longer be locally declared special.
1794 * bug fix: signals delivered to threads started from foreign land (read:
1795 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1796 thread by blocking all signals and resignalling.
1797 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1798 from :INITFORM, if any.
1800 changes in sbcl-1.0.28 relative to 1.0.27:
1801 * a number of bugs in cross-compilation have been fixed, with the ultimate
1802 result that building under (at least) clisp should be much more reliable.
1803 * minor incompatible changes: echo-streams now propagate unread-char to the
1804 underlying input stream, and no longer permit unreading more than one
1806 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1807 frames, allowing for instance more reliable backtraces.
1808 * improvement: the debugger REPL can now reference lexical variables
1809 by name directly for code compiled with (DEBUG 3).
1810 * improvement: errors from malformed declarations now have better source
1811 paths associated with them. (thanks to Tobias Rittweiler)
1812 * optimization: faster local calls on x86/x86-64
1813 * bug fix: some error messages for out-of-bound array indexes confused the
1814 index and the bound. (thanks to Stas Boukarev)
1815 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1817 * bug fix: running regressions tests in shells without OSTYPE set now works.
1818 (reported by Harald Hanche-Olsen)
1819 * bug fix: more robust static space exhaustion signalling from
1820 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1821 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1822 docstring away instead of storing it under names such as (LAMBDA (X)).
1823 (reported by Leslie Polzer)
1824 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1825 (thanks to Ole Arndt for the patch)
1826 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1827 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1828 potentially-invalid effective methods in its cache.
1829 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1830 instances as well (thanks to Paul Khuong)
1831 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1832 SB-POSIX:WAITPID and their C equivalents.
1833 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1835 changes in sbcl-1.0.27 relative to 1.0.26:
1836 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1837 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1838 * improvement: the system either recovers from stack exhaustion or dies
1839 properly as opposed to leaving the user uncertain of whether the handler
1840 trampled on some random memory next to the stack or having to rely on
1841 --lose-on-corruption (which is still a good idea to use in production
1842 because stack exhaustion can happen in signal handlers which will likely
1844 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1845 1.0.25.37, reported by Harald Hanche-Olsen)
1846 * bug fix: work around signal delivery bug in darwin (regression from
1847 1.0.25.44, reported by Sidney Markowitz)
1848 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1850 changes in sbcl-1.0.26 relative to 1.0.25:
1851 * incompatible change: an interruption (be it a function passed to
1852 INTERRUPT-THREAD or a timer function) runs in an environment where
1853 interrupts can be enabled. The interruption can use
1854 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1855 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1856 potentially running out of stack. Keep in mind that in the absence
1857 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1858 acquiring a lock can enable interrupts.
1859 * incompatible change: GC-OFF and GC-ON are removed, as they were
1860 always unsafe. Use WITHOUT-GCING instead.
1861 * new feature: runtime option --disable-ldb
1862 * new feature: runtime option --lose-on-corruption to die at the
1863 slightest hint of possibly non-recoverable errors: running out of
1864 memory, stack, alien stack, binding stack, encountering a memory
1865 fault, etc. In the absence of --lose-on-corruption a warning is
1867 * enhancement: detect binding stack exhaustion
1868 * enhancement: detect alien stack exhaustion on x86/x86-64
1869 * improvement: generally more stable and reliable interrupt handling
1870 * improvement: there is a per thread interruption queue,
1871 interruptions are executed in order of arrival
1872 * improvement: a repeating timer reschedules itself when the it has
1873 finished, but expiration times are spaced equally. If an
1874 expiration time is in the past it will trigger after a short grace
1875 period that may give a chance to other things to run.
1876 * optimization: slightly faster gc on multithreaded builds
1877 * optimization: faster WITHOUT-GCING
1878 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1879 important locks so that the debugger/handler doesn't produce
1880 recursive errors or deadlock.
1881 * bug fix: real-time signals are not used anymore, so no more
1882 hanging when the system wide real-time signal queue gets full.
1883 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1885 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1886 * bug fix: fix random memory faults related to interrupts on alpha
1887 * bug fix: fix random memory faults related to interrupts on sparc
1888 * bug fix: fix deadlocks related to starting threads
1889 * bug fix: fix deadlines on locks on futex platforms
1890 * bug fix: restore errno in signal handlers
1891 * bug fix: fix deadlocks related to hash tables
1892 * bug fix: fix deadlocks in pcl
1894 changes in sbcl-1.0.25 relative to 1.0.24:
1895 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1896 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1897 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1898 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1899 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1900 better name and does not return values so stale on multiprocessor systems.
1901 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1903 * improvement: unithread builds keep track of MUTEX-VALUE.
1904 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1905 stream anymore making it thread safe to have a concurrent reader and
1906 a writer, for instance, in a pipe.
1907 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1908 arguments, making compiler-macros for SETF-functions able to inspect
1909 their constant arguments.
1910 * improvement: COMPILE-FILE reports times with millisecond accuracy
1911 (thanks to Luis Oliveira)
1912 * optimization: CHAR-CODE type derivation has been improved, making
1913 TYPEP elimination on subtypes of CHARACTER work better. (reported
1914 by Tobias Rittweiler, patch by Paul Khuong)
1915 * bug fix: setting alien structure fields of type struct by value now
1916 computes the right offset for the memory copy.
1917 * bug fix: compilation problem involving inlined calls to aliens with
1918 result type VOID. (reported by Ken Olum)
1919 * bug fix: #235a; sequential inline expasion in different policies no
1920 longer reuses the functional from the previous expansion site.
1921 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1922 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1923 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1924 cause an implied type redefinition. Regression from 1.0.21.29.
1925 * bug fix: sign-extension of small signed return values now works with C
1926 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1927 * improvements to the Windows port:
1928 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1929 Westfold, thanks to Rudi Schlatte)
1931 changes in sbcl-1.0.24 relative to 1.0.23:
1932 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1933 vector of a multidimensional SIMPLE-ARRAY.
1934 * new feature: the system now signals a continuable error if standard
1935 readtable modification is attempted. (thanks to Tobias Rittweiler)
1936 * new feature: DIRECTORY has been extended with a non-standard keyword
1937 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1938 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1939 has been robustified and documented better. (thanks to Robert Goldman)
1940 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1941 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1942 * tradeoff: constant FORMAT control strings are now compiled unless
1943 SPACE > SPEED (previously only when SPEED > SPACE.)
1944 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1946 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1948 * bug fix: lexical type declarations are now correctly reported by
1949 SB-CLTL2. (reported by Larry D'Anna)
1950 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1951 using UTF-8 as external format. (thanks to Luis Oliveira)
1952 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1953 are signalled correctly. (thanks to Stas Boukarev)
1954 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1955 designator. (thanks to Tobias Rittweiler)
1956 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1957 designator, and returns T instead of the function. (thanks to
1959 * bug fix: direct superclasses of STANDARD-CLASS and
1960 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1961 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1962 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1963 when no class with the named slot yet exists no longer causes a
1964 compile-time style-warning.
1965 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1966 in safe code. (reported by Didier Verna)
1967 * bug fix: #430; nested structure constructors can stack allocate.
1968 * bug fix: on some 64-bit platforms dynamic space size was truncated
1969 to #xffff0000 bytes. (reported by Benjamin Lambert)
1970 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1971 REPL unusable. (reported by Daniel Herring)
1972 * bug fix: return values of READ-SEQUENCE did not take :START into
1973 account on file streams, regressions since 1.0.12.22. (reported by
1974 Thomas Russ, patch by Paul Khuong)
1975 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1976 method specializer used to confuse permuation vector optimization.
1977 * bug fix: system inserted bogus implicit type declarations for local
1978 special variables in DEFMETHOD bodies.
1979 * bug fix: #354; duplicated frames in backtraces due to
1980 non-tail-call-optimized XEPs to functions with return type NIL
1982 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1983 initializes structure object slots according to DEFSTRUCT initforms,
1984 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1985 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1986 (reported by Bruno Haible and Stephen Wilson)
1987 * bug fix: #395; fill-pointer output streams used now support
1988 element-type BASE-CHAR as well.
1989 * bug fix: compiler error when attempting to derive return value of
1990 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1992 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1994 * bug fix: Mac OS X binaries should now be portable between Leopard
1997 changes in sbcl-1.0.23 relative to 1.0.22:
1998 * enhancement: when disassembling method functions, disassembly
1999 for the associated fast function is also produced.
2000 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
2002 * optimization: printing with *PRINT-PRETTY* true is now more
2003 efficient as long as the object being printed doesn't require
2004 special handling by the pretty printer.
2005 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
2006 now interact correctly with type declarations.
2007 * partial bug fix: PCL detects infinite recursion during wrapper
2008 validation. (thanks to Attila Lendvai)
2009 * bug fix: #426; nested function calls are inlined properly.
2010 Previously if FOO was an inline function, in calls of the form
2011 (FOO (FOO ...)) the outer call was not inlined.
2012 * bug fix: long long arguments passed in registers to alien
2013 functions on PowerPC Linux and NetBSD are now handled correctly
2014 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
2016 changes in sbcl-1.0.22 relative to 1.0.21:
2017 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
2018 for the shared object in the current directory, but passes the native
2019 namestring of the designated pathname to the operation system's shared
2020 object loading function as-it.
2021 * minor incompatible change: --disable-debugger toplevel option now takes
2022 effect before processing of initialization files and --eval or --load
2024 * new feature: new commandline argument: --script, which supports
2025 shebang lines. See documentation for details. (based on work by
2027 * new feature: SAVE-LISP-AND-DIE can save current values of
2028 --dynamic-space-size and --control-stack-size in the executable core,
2029 causing it to skip normal runtime option processing. See documentation
2030 for details. (thanks to Zach Beane)
2031 * enhancement: inoccous calls to EVAL or generic functions dispatching
2032 on subclasses of eg. STREAM no longer cause compiler notes to appear.
2033 * enhancement: the system no longer resignals errors from --load and
2034 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
2035 associated with the original error to be lost. (thanks to Ariel
2037 * enhancement: :DONT-SAVE keyword argument has been added to
2038 LOAD-SHARED-OBJECT for controlling interaction with
2039 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
2040 the effects of an earlier LOAD-SHARED-OBJECT call.
2041 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
2042 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
2043 provided. (reported by Cedric St-Jean)
2044 * bug fix: circularity handling in the reader did not treat raw
2045 structure slots correctly. (reported by Cedric St-Jean)
2046 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
2047 file descriptors when there were none.
2048 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
2049 was broken. (reporteed by Willem Broekema)
2050 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
2051 pathnames without a directory.
2052 * bug fix: COMPILE-FILE did not warn about undefined variable
2053 references at toplevel, and LOAD of the resulting fasl did
2054 not signal an error.
2055 * bug fix: functions with non-required arguments used to end up with
2056 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
2057 * bug fix: redefining a function with non-required arguments didn't
2058 update the system's knowledge about its call signature properly.
2059 * bug fix: fixed #431; incompatible alien record type redefinitions
2060 are detected and handled. (reported by Neil Haven)
2061 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
2062 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
2064 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2065 after alien stack frames.
2066 * bug fix: strings passed to mk{s,d}temp lacked null termination
2068 changes in sbcl-1.0.21 relative to 1.0.20:
2069 * new feature: the compiler is able to track the effective type of a
2070 generic function across method addition and removal.
2071 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2072 appropriately typed structure slots without locking.
2073 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2074 information like those gathered by TIME using a programming-friendly
2076 * new feature: TIME reports time taken even if the form performs a
2077 non-local transfer of control.
2078 * enhancement: reduced conservativism on GENCGC platforms: on
2079 average 45% less pages pinned (measured from SBCL self build).
2080 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2081 mutate constant symbols or violate declaimed type of the symbol.
2082 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2083 sleeping on the semaphore in heavily contested semaphores.
2084 * bug fix: semaphores and condition variables were not interrupt
2086 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2087 owned by other threads anymore.
2088 * bug fix: FIND on lists called KEY outside the specified
2089 subsequence. (reported by budden)
2090 * bug fix: LOG doesn't use single-float intermediate results when
2091 given mixed integer and double-float arguments, leading to better
2092 precision. (reported by Bob Felts)
2093 * bug fix: LOG with base zero returned values of inconsistent type.
2095 changes in sbcl-1.0.20 relative to 1.0.19:
2096 * minor incompatible change: OPTIMIZE qualities
2097 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2098 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2099 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2100 * documentation: some slot access efficiency guidelines have been
2101 added to the user manual.
2102 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2103 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2104 as ASSOC and MEMEBER.
2105 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2106 to more efficient EQ-comparison versions more often.
2107 * optimization: enhanced derivation of DOLIST iteration variable type
2109 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2111 * optimization: runtime lookup of function definitions can be
2112 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2113 * optimization: compiler is able to derive the return type of
2114 (AREF (THE STRING X) Y) as being CHARACTER.
2115 * optimization: CLRHASH on empty hash-tables no longer does pointless
2116 work. (thanks to Alec Berryman)
2117 * optimization: REPLACE deftransforms don't punt when :START1 or
2119 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2120 no longer emits a code deletion note. (reported by Andrew
2122 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2123 functions with an odd number of &OPTIONAL arguments, a &REST
2124 argument, and one or more &KEY arguments at the call site.
2125 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2126 arguments appeared at call sites as well.
2127 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2128 READ-LINE &co can no longer read from them afterwards. (reported
2130 * bug fix: fixed #427: unused local aliens no longer cause compiler
2131 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2133 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2134 alien-stack leakage. (reported by Andy Hefner)
2135 * bug fix: PROGV signals an error when an attempt to violate declared
2136 type of a variable or bind a constant is made.
2137 * bug fix: SET signals an error when an attempt to violate declared
2138 type of a variable is made.
2139 * bug fix: restart computation during the execution of a restart
2140 test function no longer causes infinite recursion. (reported by
2142 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2143 signals an error. (thanks to Pierre Mai)
2144 * bug fix: EXPORT left symbol unexported in conflict situations.
2145 (thanks to Michael Weber)
2146 * bug fix: correctly handle name conflicts involving CL:NIL.
2147 (thanks to Michael Weber)
2148 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2149 conflicts arising from USEing package with conflicting symbols
2150 correctly. (thanks to Michael Weber)
2152 changes in sbcl-1.0.19 relative to 1.0.18:
2153 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2154 warnings that go otherwise unhandled will be muffled if they are
2155 of the type that's the value of this variable.
2156 * optimization: stack allocation is slightly more efficient on x86
2158 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2159 where a raw slot always is initialized using the initform whose
2160 type is not know sufficiently well a compile-time are now compiled
2161 correctly. (reported by John Morrison)
2162 * bug fix: compiler no longer makes erronous assumptions in the
2163 presence of non-foldable SATISFIES types.
2164 * bug fix: stack analysis missed cleanups of dynamic-extent
2165 arguments in non-let-converted calls to local functions.
2166 * improvements to the Windows port:
2167 ** adjusted address spaces for building on both Win32 and
2168 Win64. (thanks for John Connors)
2169 * fixed some bugs revealed by Paul Dietz' test suite:
2170 ** interval arithmetic during type derivation used inexact integer
2171 to single-float coercions.
2172 ** arithmetic operations involving large integers and single
2173 floats give the same results in compiled and interpreted code.
2174 ** deriving the result type of COERCE no longer signals an error
2175 if the derived type of the second argument is a MEMBER type
2176 containing invalid type specifiers.
2177 ** ADJOIN with constant NIL as second argument works correctly.
2178 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2180 changes in sbcl-1.0.18 relative to 1.0.17:
2181 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2182 profiles only the current thread.
2183 * minor incompatible change: changes to SYMBOL-VALUE of constants
2184 defined with DEFCONSTANT now signal an error.
2185 * enhancement: SB-SPROF now has support for wallclock profiling,
2186 and is also able to profile specific threads. REPORT output
2187 has also additional sorting options.
2188 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2190 * optimization: structure allocation has been improved
2191 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2192 ** out of line constructors are ~10% faster.
2193 ** inline constructors are ~15% faster.
2194 ** inline constructors are capable of dynamic extent allocation
2195 (generally on x86 and x86-64, in some cases on other platforms
2197 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2199 * optimization: file compiler is now able to coalesce non-circular
2200 lists, non-base strings, and bit-vectors. Additionally, constants
2201 are never referenced through SYMBOL-VALUE at runtime.
2202 * optimization: code defining methods on PRINT-OBJECT (and other
2203 generic functions in the COMMON-LISP package) now loads faster.
2204 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2206 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2207 fasl is now deleted. (reported by Attila Lendvai)
2208 * bug fix: READ-LINE always returned NIL for the last line in files.
2209 (reported by Yoshinori Tahara)
2210 * bug fix: more accurate disassembly annotations of foreign function
2211 calls. (thanks to Andy Hefner)
2212 * bug fix: trimming non-simple strings and non-string string
2213 designators when the there is nothing to trim works properly.
2214 (thanks to James Knight)
2215 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2216 (thanks to Travis Cross)
2217 * fixed some bugs revealed by Paul Dietz' test suite:
2218 ** NIL is a valid function name (regression at 1.0.13.38)
2219 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2220 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2221 fill pointers properly (regression at 1.0.12.23)
2222 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2223 displacement indices properly (regression at 1.0.12.23)
2225 changes in sbcl-1.0.17 relative to 1.0.16:
2226 * temporary regression: user code can no longer allocate closure
2227 variable storage on stack, due to bug 419 without explicitly
2228 requesting it. Please consult sbcl-devel for advice if you need to
2229 use this feature in the meanwhile.
2230 * new feature: runtime argument --control-stack-size can be used to
2231 adjust thread default control stack size.
2232 * enhancement: improved TIME output
2233 ** all times are reported using the measured accuracy (milliseconds
2234 for real and GC times, microseconds for everything else.)
2235 ** processor cycle counts on x86 and x86-64.
2236 ** interpreted forms are counted for both evaluator modes.
2237 ** number of lambdas converted by the compiler is reported.
2238 ** CPU percentage report (computed from real and total run time.)
2239 ** more comprehensive run time reporting, using a condenced format
2240 ** interperted form, lambda, and page fault counts are omitted
2242 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2244 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2245 * optimization: two argument forms of LAST are upto ~10% faster
2246 in normal SPEED policies.
2247 * optimization: NCONC no longer needs to heap cons its &REST list
2248 in normal SPEED policies.
2249 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2250 to Sidney Markowitz)
2251 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2252 regression since 1.0.9.1. (thanks to Eric Marsden)
2253 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2254 since 1.0.15.36. (thanks to Paul Khuong)
2255 * bug fix: LAST when always returned the whole list when given a bignum
2256 as the second argument.
2257 * bug fix: dynamic extent allocation of nested lists and vectors
2258 could leak to otherwise accessible parts.
2259 * bug fix: invalid optimization of heap-allocated alien variable
2261 * bug fix: fasl header checking is less vulnerable to different
2262 platform word lengths.
2263 * bug fix: more correct assembler syntax for GNU binutils
2264 2.18.50.0.4 support. (thanks to Marijn Schouten)
2265 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2267 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2268 declarations) successfully. (reported by Attila Lendvai)
2270 changes in sbcl-1.0.16 relative to 1.0.15:
2271 * minor incompatible change: revert the changes to sb-posix's error
2272 signaling added in 1.0.14.
2273 * minor incompatible change: change PROBE-FILE back to returning
2274 NIL whenever we can't get a truename, as was the case before 1.0.14.
2275 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2276 inherits from ERROR instead of just CONDITION.
2277 * new feature: SB-INTROSPECT can provide source locations for instances
2278 as well. (thanks to Tobias Rittweiler)
2279 * optimization: binding special variables now generates smaller code
2280 on threaded platforms.
2281 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2282 and cases where no :TEST is given but the compiler can infer that
2283 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2284 * optimization: better LOGNOT on fixnums.
2285 * optimization: modular arithmetic for a particular requested width
2286 is implemented using a tagged representation unless a better
2287 representation is available.
2288 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2289 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2290 for wellformedness and returns a specialized vector. (reported by
2291 Francois-Rene Rideau)
2292 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2293 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2294 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2295 unscheduling timer at the same time as another timer fires.
2296 * bug fix: don't reschedule timers for dead threads.
2297 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2298 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2299 bogus errors if select() was interrupted.
2300 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2302 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2303 * enhancement: cleaner backtraces for interactive interrupts, as
2304 well as other cases where the interesting frames used to be
2305 obscured by interrupt handling frames.
2306 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2307 now supported, and tracing a whole package using (TRACE "FOO") now
2308 traces SETF-functions as well.
2309 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2310 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2311 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2312 * unreadably printed representation of hash-tables now includes
2314 * bug fix: partially fixed #188: type propagation from assignments
2315 is now more efficient.
2316 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
2317 'DOUBLE-FLOAT) are not flushable.
2318 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
2319 full address of the object, and none of the tag bits.
2320 * bug fix: readably printing hash-tables now respects other printer
2321 control variables. (reported by Cedric St-Jean)
2322 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
2323 keyword with MAKE-HASH-TABLE.
2324 * bug fix: export SB-POSIX:MKSTEMP.
2325 * bug fix: SORT was not interrupt safe.
2326 * bug fix: XREF accounts for the last node of each basic-block as
2328 * bug fix: MAKE-INSTANCE optimizations interacted badly with
2329 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
2330 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2331 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2332 create obsolete instances in the case of redefinition or
2333 obsoletion of a superclass. (thanks to Andy Hefner)
2334 * bug fix: Support for the Alpha architecture has been revived; it had
2335 suffered somewhat from lack of maintenance since sbcl-1.0.
2336 * improvements to the Windows port:
2337 ** The system detects the codepage to use at startup, instead of
2338 using the value from the saved core. (thanks to Kei Suzuki)
2340 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2341 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2342 (see documentation for details.)
2343 * revived support for OpenBSD (contributed by Josh Elsasser)
2344 * partially fixed bug #108: ROOM no longer suffers from occasional
2345 (AVER (SAP= CURRENT END)) failures.
2346 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2347 bodies no longer cause a WARNING to be signalled. (reported by
2349 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2350 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2351 the bug in TRUNCATE.) (reported by Michael Weber)
2352 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2353 no samples. (reported by Andy Hefner)
2354 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2355 no longer appear as (NIL ...) frames in backtraces.
2356 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2357 is now actually exported from SB-EXT as documented. (reported by
2359 * bug fix: sb-aclrepl now correctly understands how to inspect
2360 single-floats on 64-bit platforms where single-floats are not boxed.
2361 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2362 yet been finalized. (reported by Levente Meszaros)
2363 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2364 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2365 SBCL-specific optimize qualities.
2367 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2368 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2369 an executable in the search path, and does so in the child
2370 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2371 been removed; it can be found in the CVS history, for somebody who
2372 needs that search behavior (see the manual).
2373 * minor incompatible change: compiler policy re. weakening type
2374 checks has changed: now type checks are weakened only if SAFETY < 2
2376 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2377 unparsing of directory pathnames as files. Analogously,
2378 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2379 filename to parse into a directory pathname.
2380 * enhancement: implicit generic function creation now signals a
2381 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2382 users can bind handlers for and muffle around calls to LOAD.
2383 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2384 to be used (using the default stream external format), and allows
2385 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2386 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2387 strings and vectors whose element-type or simplicity is not fully
2388 known at compile-time.
2389 * optimization: STRING-TRIM and related functions no longer allocate
2390 a new string when no trimming needs to be performed. These functions
2391 are also faster than before when the input string has been declared
2393 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2394 * optimization: READ-LINE is significantly faster for files containing
2396 * optimization: non-open coded uses of character comparison operators
2397 (e.g. char=) no longer cons when called with more than one parameter
2398 on platforms supporting dynamic-extent allocation.
2399 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2400 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2401 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2403 * bug fix: some sequence functions elided bounds checking when
2405 * bug fix: too liberal weakening of union-type checks when SPEED >
2407 * bug fix: more bogus fixnum declarations in ROOM implementation
2410 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2411 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2412 :SYNCHRONIZED argument, which makes the hash-table safe for
2413 concurrent accesses (but not iteration.) See also:
2414 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2415 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2416 * optimization: CONCATENATE on strings is an order of magnitude faster
2417 in code compiled with (> SPEED SPACE).
2418 * optimization: SUBSEQ is ~50% faster on lists.
2419 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2420 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2421 END is smaller then START.
2422 * bug fix: SB-PROFILE will no longer report extra consing for nested
2423 calls to profiled functions.
2424 * bug fix: ROOM implementation had bogus fixnum declarations which
2425 could cause type-errors when calling ROOM on large images.
2426 * bug fix: if file compilation is aborted, the partial fasl is now
2427 deleted, and COMPILE-FILE returns NIL as the primary value.
2428 * bug fix: number of thread safety issues relating to SBCL's internal
2429 hash-table usage have been fixed.
2430 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2431 be returned from its body when the values were being returned
2432 using unknown-values return convection and the W-P-O was wrapped
2433 inside an UNWIND-PROTECT.
2434 * bug fix: sb-posix should now compile again under Windows, enabling
2435 slime to work again.
2437 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2438 * incompatible change: hash-table accessor functions are no longer
2439 automatically protected by locks. Concurrent accesses on the same hash-table
2440 from multiple threads can give inconsistent results or even corrupt the
2441 hash-table completely. Multi-threaded applications should do their own
2442 locking at the correct granularity. In the current implementation it is
2443 still safe to have multiple readers access the same table, but it's not
2444 guaranteed that this property will be maintained in future releases.
2445 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2446 and will signal an error at runtime.
2447 * enhancement: SB-THREAD package now exports a semaphore interface.
2448 * enhancement: CONS can now stack-allocate on x86 and
2449 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2451 * enhancement: nested lists can now be stack allocated on
2452 platforms providing stack allocation support.
2453 * enhancement: dynamic-extent support has been extended to support
2454 cases where there are multiple possible sources for the stack
2456 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2457 if the mutex is uncontested on Linux.
2458 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2459 as specified by the CLHS. (thanks to Tobias Rittweiler)
2460 * bug fix: NaN comparison now works on x86-64.
2461 * bug fix: CLOSE :ABORT T on a stream with pending output now
2463 * bug fix: instances of non-standard metaclasses using standard
2464 instance structure protocol sometimes missed the slot type checks
2466 * bug fix: known functions can be inlined in high-debug code.
2468 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2469 * minor incompatible change: the MSI installer on Windows no longer
2470 associates .lisp and .fasl files with the installed SBCL.
2471 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2472 on Windows. (thanks to Luis Oliviera)
2473 * new feature: SB-CLTL2 contrib module now implements
2474 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2475 * optimization: scavenging weak pointers is now more efficient,
2476 requiring O(1) instead of O(N) per weak pointer to identify
2477 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2478 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2479 method bodies using constant slot-names when the first argument is
2480 a specializer parameter for the method.
2481 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2482 names, when the class of the instance is a direct instance
2483 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2484 as slow as the constant slot-name case.)
2485 * optimization: member type construction is now O(N) instead
2487 * optimization: UNION and NUNION are now O(N+M) for large
2488 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2490 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2491 now more readable in environments like Slime which display it.
2492 (thanks to Tobias C. Rittweiler)
2493 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2494 was able to infer the correct argument type for the object on which
2495 the CAS operation was being performed.
2496 * bug fix: copy propagation interfered with parallel assignment
2497 semantics in local calls. (reported by Paul Khuong)
2498 * bug fix: the signed modular fixnum shift compiled to wrong code on
2499 x86 and x86-64. (spotted by a slight modification to some of
2502 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2503 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2504 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2505 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2507 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2508 and generic function now print the object identity for anonymous
2509 instances. (thanks to Attila Lendvai)
2510 * enhancement: as an extension to MOP, SBCL now supports SETF of
2511 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2512 (thanks to Attila Lendvai)
2513 * enhancement: sb-cover has an alternate annotation mode which puts
2514 the form annotations at the car of the form, instead of annotating
2515 it completely. The benefit of this mode is that it shows better
2516 which forms were instrumented by the compiler.
2517 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2518 by printer control variables. (reported by Dan Corkill)
2519 * bug fix: system leaked memory when delayed output was performed by
2520 the OS in smaller chunks then expected. (thanks to David Smith)
2521 * bug fix: system leaked memory when file streams were not closed
2523 * bug fix: large objects written to slow streams that were modified
2524 after the write could end up with the modified state written to
2525 the underlying file descriptor.
2526 * bug fix: multiple threads operating in parallel on the same stream
2527 could cause buffer-overflows.
2528 * bug fix: source location information is stored correctly
2529 (broken since 1.0.6). This bug would generally show up as the
2530 Slime debugger highlighting the wrong form when the sldb-show-source
2532 * bug fix: Branch forms are again annotated as branches in the sb-cover
2534 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2535 on x86-64. (reported by Gregory Vanuxem)
2536 * bug fix: EQUALP could return wrong results for structures with raw
2537 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2538 word). (reported by Vjacheslav Fyodorov)
2539 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2542 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2543 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2544 atomic compare-and-swap operations on threaded platforms.
2545 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2546 allows assigning a global minimum value to optimization qualities
2547 (overriding proclamations and declarations).
2548 * enhancement: closed over variables can be stack-allocated on x86
2550 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2552 * optimization: slot definition lookup is now O(1). This speeds up
2553 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2554 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2555 * optimization: ASSOC and MEMBER can now be open-coded for all
2556 combinations of keyword arguments when second argument is constant
2557 and SPEED >= SPACE. In other cases a specialized version is
2559 * bug fix: using obsoleted structure instances with TYPEP and
2560 generic functions now signals a sensible error.
2561 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2562 (reported by Kristoffer Kvello)
2563 * bug fix: backtrace construction is now more careful when making
2564 lisp-objects from pointers on the stack, to avoid creating bogus
2565 objects that can be seen by the GC.
2566 * bug fix: defaulting of values in contexts expecting more than 7
2567 variables now works on x86-64. (reported by Christopher Laux)
2568 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2570 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2571 as the property-list of a symbol.
2572 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2573 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2574 situations requested, are once again file-compileable. (reported
2577 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2578 * MOP improvement: support for user-defined subclasses of
2579 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2580 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2581 the expansion of DEFMETHOD, is responsible for generating a form
2582 which creates a list of specializers when evaluated. Additional
2583 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2584 debugging and introspective support.
2585 * minor incompatible change: the (unsupported) spinlock interface
2586 has changed: free spinlock now has the value NIL, and a held spinlock
2587 has the owning thread as its value.
2588 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2589 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2591 * enhancement: name of a socket-stream is now "a socket" instead of
2592 "a constant string".
2593 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2594 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2595 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2596 for generic functions. (Thanks to Tobias C. Rittweiler)
2597 * optimization: bignum printing speed has been improved by 20-40%
2598 (depending on the bignum size.)
2599 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2601 * bug fix: the cache used by the CLOS to store precomputed effective
2602 methods, slot offsets, and constant return values is now thread and
2604 * bug fix: generic function dispatch function updating is now thread
2605 and interrupt safe (in the sense that the known issues have been
2607 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2608 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2609 * bug fix: asdf systems with dependencies to the SB-POSIX or
2610 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2611 * bug fix: interrupt safety of applicable method computation has been
2614 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2615 * new contrib: sb-cover, an experimental code coverage tool, is included
2616 as a contrib module.
2617 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2618 significantly faster.
2619 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2620 produce more efficient code on x86-64 if the compiler can determine
2621 that (+ INDEX <constant>) does not require a bounds check and FOO
2622 has an element type at least 8 bits wide.
2623 * enhancement: a new, experimental synchronous timeout facility is
2624 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2625 * enhancement: when a symbol name conflict error arises, the
2626 conflicting symbols are always printed with a package prefix.
2627 (thanks to Kevin Reid)
2628 * enhancement: stepping is now once again supported on the SPARC and
2629 MIPS platforms. (It is also now more likely to work on CheneyGC
2631 * enhancement: sb-sprof can now also track and report accurate call
2633 * bug fixes: the treatment of non-standard subclasses of
2634 SB-MOP:SPECIALIZER is more correct.
2635 * incompatible change: PURIFY no longer copies the data from the
2636 dynamic space into the static and read-only spaces on platforms
2637 that use the generational garbage collector
2638 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2640 * bug fix: GC race condition occasionally resulting in crashes with
2641 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2643 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2645 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2646 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2647 * bug fix: an asynchronous interrupt could previously leave the
2648 system running with GC inhibited.
2649 * bug fix: a DECLARE form evaluated at top-level now causes an error
2650 rather than silently (or verbosely) returning NIL.
2651 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2652 result in a error being signalled due to source form lookup errors.
2653 (reported by Peter Graves)
2655 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2656 * incompatible change: removed writer methods for host-ent-name,
2657 host-ent-addresses -- changing the values did not update the DNS
2659 * minor incompatible change: changed experimental JOIN-THREAD interface
2660 * documentation: the manual now lists reader and writer methods
2661 in class slot documentation sections. (thanks to Richard M Kreuter)
2662 * documentation: unwinding from asyncronous events has been
2663 documented as unsafe.
2664 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2665 in multithreaded application code.
2666 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2667 platforms. (thanks to James Anderson for the optimization hint)
2668 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2670 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2671 variants no longer cons.
2672 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2673 their NOT- variants no longer cons.
2674 * optimization: EQUAL hash tables no longer use SXHASH for objects
2675 of all data types, but instead use an EQL hash for types for which
2676 EQUAL is the same as EQL.
2677 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2678 are significantly faster.
2679 * optimization: new STRING-OUTPUT-STREAM implementation is much
2680 faster for large outputs and conses 30% less on average.
2681 * enhancement: XREF information is now collected for references made
2682 to global variables using SYMBOL-VALUE and a constant argument.
2683 * enhancement: SIGINT now causes a specific condition
2684 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2685 * bug fix: FILE-POSITION used to signal an error in some cases where
2686 ANSI requires it to return NIL.
2687 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2688 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2689 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2691 * bug fix: bad type declaration in the CLOS implementation has
2692 been fixed. (reported by James Anderson)
2693 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2694 (thanks to Lutz Euler)
2695 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2696 required by the CLHS. (reported by Samium Gromoff)
2697 * bug fix: dead unbound variable references now signal an error.
2698 (reported by Marco Monteiro)
2699 * bug fix: / with an unused value was being deleted in safe code.
2700 (thanks to Marco Monteiro and Kevin Reid)
2701 * bug fix: number of characters that can be written onto a single
2702 line in a file is unlimited.
2703 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2704 been fixed by inhibiting interrupts for when GC is disabled.
2705 * bug fix: some interrupt safety issues with GETHASH, (SETF
2706 GETHASH), CLRHASH and REMHASH have been fixed.
2707 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2708 specifier no longer causes infinite recursion.
2709 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2710 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2711 * bug fix: an &environment argument with the correct variable information
2712 is passed to macros that are expanded during byte compilation.
2713 (reported by Samium Gromoff)
2714 * bug fix: a logic error was causing the hash function for bignums to
2715 have excessive amounts of collisions. (reported by Faré Rideau)
2716 * bug fix: modifying the contents of an array could change the return
2717 value of SXHASH on that array, which is only allowed for strings
2718 and bit vectors. (bug introduced in 0.9.16)
2719 * improvement: the x86-64/darwin port now passes all tests (except
2720 for the debugger tests) but should still be considered
2721 experimental until this is fixed.
2722 * improvement: a style-warning is signaled for CASE (etc) clauses with
2723 duplicate keys. (thanks to Kevin Reid)
2724 * improvement: macos/x86 and macos/x86-64 now use mach exception
2725 handlers for dealing with illegal instructions (for trapping and
2726 error handling) and memory protection violations (for GC).
2728 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2729 * new platform: experimental support for x86-64/darwin (MacOS).
2730 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2731 and getnameinfo sockets functions are used instead of gethostbyaddr
2732 and gethostbyname, on platforms where the newer functions are available.
2733 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2735 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2736 don't print the startup banner, but behave as if --noinform was passed
2737 as a command line argument. (thanks to Kevin Reid)
2738 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2739 * optimization: code using alien values with undeclared types is much faster.
2740 * optimization: the compiler is now able to open code SEARCH in more cases.
2741 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2742 * bug fix: using standardized COMMON-LISP special variables as loop
2743 variables no longer signals bogus package lock violations. (reported
2745 * bug fix: declaring local loop variables to be of a range-limited type
2746 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2747 (reported by Andras Simon)
2748 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2749 bugs remain on x86-64.)
2750 * bug fix: the #= and ## reader macros now interact reasonably with
2751 funcallable instances.
2752 * bug fix: type-checks for function arguments were compiled using the
2753 compiler policy settings of the wrong lexical environment (in 1.0.2
2755 * bug fix: SHADOW accepts characters as string designators, as required
2756 by the spec (thanks to Eric Marsden)
2757 * bug fix: fixed GC safety issues when foreign functions are called with
2758 non-base strings as arguments
2759 * bug fix: more consistent error output for fatal-compiler-warnings, like
2761 * bug fix: functions with proper names were showing up as NIL in
2762 backtraces (reported by Edi Weitz, regression in 1.0.2)
2764 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2765 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2766 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2767 produce more efficient code on the x86 if the compiler can determine
2768 that (+ INDEX <constant>) does not require a bounds check and FOO
2769 has an element type at least 8 bits wide.
2770 * bug fix: references to undefined variables are handled the same way
2771 in toplevel forms as in the normal compiler
2772 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2774 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2775 (thanks to Jon Buller)
2776 * improvement: faster compilation times for complex functions
2777 * improvement: added readlink support to SB-POSIX (thanks to Richard
2780 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2781 * improvement: experimental support for mach exception handling on
2782 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2784 * improvement: support for GBK external format.
2785 (thanks to Chun Tian (binghe))
2786 * improvement: the debugger now displays variables that have been closed
2787 over, in code compiled with (DEBUG 2) or higher
2788 * improvement: support for executable cores on NetBSD (thanks to
2790 * new feature: added a RESTART-FRAME debugger command
2791 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2792 be used to provide an implementation for FILE-POSITION on Gray streams
2793 (thanks to Eric Marsden)
2794 * new feature: add syslog, openlog and closelog support to SB-POSIX
2795 (thanks to Richard Kreuter)
2796 * optimization: the function call overhead in code compiled with
2797 a high DEBUG optimization setting is significantly
2798 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2799 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2800 (thanks to Tony Martinez)
2801 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2802 evaluated once (reported by Kevin Reid)
2803 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2804 works again (thanks to Kilian Sprotte)
2805 * bug fix: an error is signaled for tagbodies with duplicate tags
2806 (thanks to Stephen Wilson)
2807 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2808 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2809 stack frames from alien callbacks.
2810 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2811 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2812 65k pages (thanks to David Woodhouse)
2813 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2815 changes in sbcl-1.0.1 relative to sbcl-1.0:
2816 * new platform: FreeBSD/x86-64, including support for threading.
2817 * new feature: the compiler stores cross-referencing information
2818 about function calls (who-calls), macroexpansion (who-macroexpands)
2819 and special variables (who-binds, who-sets, who-references) for code
2820 compiled with (< SPACE 3). This information is available through the
2821 sb-introspect contrib.
2822 * new feature: users may subclass SEQUENCE, and have instances of
2823 these classes interoperate with standard Common Lisp functions if
2824 a number of methods are defined. (This feature is experimental
2825 and the interface subject to change based on feedback from SBCL
2826 users and the general community)
2827 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2828 x86/x86-64, rather than the previous fixed depth of 8
2829 * improvement: another pthread back-end of mutex "pthread-futex".
2830 * bug fix: non-ascii command-line arguments are processed correctly
2831 (thanks to Yaroslav Kavenchuk)
2832 * bug fix: non-required arguments were not passed correctly when a method
2833 defined using DEFMETHOD was called from a mop-generated method using
2834 CALL-NEXT-METHOD (reported by Pascal Costanza)
2835 * bug fix: recursion is now permitted in accessors through
2836 SLOT-UNBOUND. (reported by Pascal Costanza)
2837 * bug fix: an error was signaled at startup if the HOME environment
2838 variable was defined, but had an empty value (reported by Peter Van Eynde)
2839 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2840 signal a PROGRAM-ERROR, not a BUG.
2841 * bug fix: SB-POSIX:READDIR works when built with large file support.
2842 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2844 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2845 for better automatic indentation support. (thanks to Matt Pillsbury)
2846 * optimization: loading generic functions no longer takes O(n^2) time,
2847 proportional to the amount of methods in the generic function
2848 (reported by Todd Sabin and Jeremy Brown)
2849 * optimization: the FIND and POSITION family of sequence functions
2850 are significantly faster on arrays whose element types have been
2852 * improvements to the Windows port:
2853 ** Intermittent heap corruption problems have been fixed. (thanks
2854 to Alastair Bridgewater)
2855 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2857 ** Lisp is able to unwind foreign exception frames from alien
2858 callbacks. (thanks to Alastair Bridgewater)
2860 changes in sbcl-1.0 relative to sbcl-0.9.18:
2861 * improvement: experimental support for threading on FreeBSD/x86.
2862 (thanks to NIIMI Satoshi)
2863 * improvement: runtime option --dynamic-space-size can be used
2864 to set the size of the dynamic space reserved on startup.
2865 * improvement: floating point modes in effect are now saved in
2866 core, and restored on startup.
2867 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2868 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2869 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2870 threads are not running after *SAVE-HOOKS* have run.
2871 * improvement: writes to CLOS instance slots are type-checked in code
2872 compiled with (SAFETY 3)
2873 * improvement: floating-point exception handling on FreeBSD (thanks to
2875 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2876 (thanks to Zach Beane)
2877 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2879 * improvement: added support for the Shift-JIS external format.
2880 (contributed by NIIMI Satoshi)
2881 * improvement: callbacks are supported on Linux/PPC. (thanks to
2883 * bug fix: compiler bug triggered by a (non-standard) VALUES
2884 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2885 * bug fix: file compiler no longer confuses validated and already
2886 dumped structurres. (reported by Kaersten Poeck)
2887 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2888 fill-pointer signals a type-error as required. (thanks to
2890 * bug fix: disassemly of funcallable instances works.
2891 * bug fix: single stepping on PPC.
2892 * bug fix: fix thread-safety problems in the type system (generally
2893 manifesting as nonsensical errors like "STRING is a bad type specifier
2894 for sequences" or "The value 1 is not of type FIXNUM")
2895 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2896 (reported by Josip Gracin)
2897 * bug fix: an error is signaled for attempts to displace arrays with
2898 incompatible element types (thanks to Mario Mommer)
2899 * bug fix: more correct handling of wide characters in debug info
2900 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2901 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2902 and don't cause extra consing
2903 * optimization: MAP and MAP-INTO are significantly faster on vectors
2904 whose elements types have been declared.
2905 * Improvements to SB-SPROF:
2906 ** Support for allocation profiling
2907 ** Reduced profiling overhead, especially for long profiling runs
2908 * Improvements to the Windows port:
2909 ** floating point exceptions are now reported correctly.
2910 ** stack exhaustion detection works partially.
2911 ** more accurate GET-INTERNAL-REAL-TIME.
2912 ** better RUN-PROGRAM behaviour in case of errors in the child
2914 ** PROBE-FILE now simplifies pathnames correctly.
2915 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2916 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2917 1st 1970 (although time timezone data will be unreliable).
2918 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2920 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2921 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2922 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2924 * bug fix: two potential GC deadlocks affecting threaded builds.
2925 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2926 returns T (reported by Anton Kazennikov)
2927 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2928 with non-variable places
2929 * bug fix: remove a race condition in the setting of
2930 funcallable-instance functions, this should make threaded CLOS
2931 code more stable against memory faults.
2932 * bug fix: corruption of specials when unbinding is interrupted by an
2933 asynchronous unwind (reported by Hannu Koivisto)
2934 * improvement: the debugger will now also display local variables that
2935 are only used once, for code compiled with a DEBUG optimization quality
2938 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2939 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2940 * incompatible change: External-format support for FFI calls. The
2941 SB-ALIEN:C-STRING no longer implies an ASCII
2942 external-format. Instead the string is subject to external-format
2943 conversion. Additionally return values of type SB-ALIEN:C-STRING
2944 are by default of type (SIMPLE-ARRAY CHARACTER), not
2945 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2946 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2947 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2948 * incompatible change: SB-EXT package no longer contains the
2949 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2950 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2952 * incompatible change: the single-stepper is no longer available
2953 on Alpha, Mips and Sparc platforms.
2954 * minor incompatible change: the direct superclasses of
2955 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2956 not (STANDARD-OBJECT FUNCTION). This makes the
2957 class-precedence-lists of GENERIC-FUNCTION and
2958 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2960 * minor incompatible change: the default stream external format on
2961 non-unicode SBCL is no longer detected from the locale, but is always
2963 * new feature: Add a version of evaluator that uses an interpreter instead
2964 of the compiler. EVAL still uses the compiler by default, to switch it
2965 to use the interpreter, set the value of the variable
2966 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2967 * minor incompatible change: the single-stepper REPL has been merged
2968 with the normal debugger (see the "Stepping" heading of the debugger help
2969 for more details). The debugger command STEP will no longer switch
2970 to the single-stepper REPL.
2971 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2972 for a type now works.
2973 * bug fix: loading of default sysinit file works. (thanks to Leonid
2975 * bug fix: better detection of circularities in the file-compiler.
2976 (reported by Marco Monteiro)
2977 * bug fix: the CL pathname functions now work with files that have
2978 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2979 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2980 systems with Unix98 pty semantics.
2981 * bug fix: ASDF-INSTALL will now work with bsd tar.
2982 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2984 * bug fix: timers expiring in dead threads no longer cause a
2985 type-error (reported by Paul "Nonny Mouse").
2986 * bug fix: thanks to more lightweight single-stepper instrumentation,
2987 code compiled with (DEBUG 3) will compile and execute significantly faster,
2988 and will have more accurate type-inferencing than before
2989 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2990 whose bindings are modified
2991 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2992 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2993 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2994 CL:SOFTWARE-VERSION with proper version
2996 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2997 * feature: implemented the READER-METHOD-CLASS and
2998 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2999 as specified by AMOP.
3000 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
3002 * optimization: faster LOGCOUNT implementation on x86 and x86-64
3003 (thanks to Lutz Euler)
3004 * optimization: hashing of general arrays and vectors has been
3005 improved. (reported by Any Fingerhut)
3006 * enhancement: SB-INTROSPECT is now able to find definitions of
3007 profiled functions. (thanks to Troels Henriksen)
3008 * enhancement: compiler-macro expansion applies now to FUNCALL forms
3009 as well, allowing compiler-macros for SETF-functions to expand.
3010 * enhancement: step-instrumentation no longer wraps known
3011 single-value functions with multiple-value context, allowing
3012 better type inference.
3013 * fixed bug #337: use of MAKE-METHOD in method combination now works
3014 even in the presence of user-defined method classes. (reported by
3015 Bruno Haible and Pascal Costanza)
3016 * fixed bug #339(c): if there are applicable methods not part of any
3017 long-form method-combination group, call INVALID-METHOD-ERROR.
3018 (reported by Bruno Haible)
3019 * fixed bug #361: the :FUNCTION initarg in the protocol for
3020 initialization of methods can now be used to override
3021 internally-produced optimized functions. (reported by Bruno
3023 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
3024 system-provided lambda expression no longer cause warnings about
3025 unbound #:|pv-table| symbols.
3026 * bug fix: improved the handling of type declarations and the
3027 detection of violations for keyword arguments with non-constant
3029 * bug fix: potentially erronous calls to PATHNAME and
3030 MERGE-PATHNAMES were being flushed in some cases.
3031 (reported by Richard Kreuter)
3032 * bug fix: compiled calls to TYPEP were mishandling obsolete
3033 instances. (reported by James Bielman and Attila Lendvai)
3034 * bug fix: format strings with ~> without matching ~< no longer
3035 trigger an AVER, but signal an understandable error instead.
3036 (reported by Antonio Martinez)
3037 * bug fix: specifying an output-file without a pathname-type for
3038 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
3039 of input-file instead of "fasl". (reported by Robert Dodier)
3040 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
3041 (reported by James Y Knight).
3042 * bug fix: compiler-macros-function did not consider the environment
3043 argument for shadowing by local functions.
3044 * bug fix: compiler-macros expansion was inhibited by local INLINE
3046 * bug fix: inline expansions of known functions were subject to
3047 step-instrumentation in high debug policies, leading to problems
3048 with type-inference.
3049 * bug fix: compiler failed to differentiate between different CONS
3050 types in some cases.
3051 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
3052 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
3053 * bug fix: #368: incorrect use of expressed vs. upgraded array
3055 * bug fix: #306a: more precise unions of array types.
3056 * thread-safety improvements:
3057 ** CONDITION-WAIT could return early on Linux, if the thread was
3058 interrupted and subsequently continued with SIGCONT.
3059 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
3061 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
3062 * added support for the ucs-2 external format. (contributed by Ivan
3064 * minor incompatible change: pretty printing of objects of type
3065 (cons symbol) is, in the default pprint-dispatch-table, now
3066 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3068 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3069 called later in a class's lifetime, possibly as late as when the
3070 first instance of the class is created. Previously,
3071 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3072 class became finalizeable.
3073 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3074 for multibyte external-format streams. (thanks to "vbzoli")
3075 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3076 with :ALLOCATION :CLASS inherited from superclasses of the
3078 * fixed bug: anonymous classes can now be created using the :NAME
3079 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3080 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3081 * fixed bug: core-files saved with :EXECUTABLE T can again be
3082 executed when SBCL_HOME isn't set. (reported by James Knight)
3083 * fixed bug: toplevel LOCALLY forms with declarations could
3084 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3085 * fixed bug: printing from several different threads using different
3086 values of *print-case* could cause invalid output, due to
3087 some internal special variables of the printer not being bound
3088 thread-locally (reported by Max Mikhanosha)
3089 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3090 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3091 (reported by Pascal Costanza)
3092 * fixed bug: FINALIZE-INHERITANCE is called from
3093 REINITIALIZE-INSTANCE on classes when the class has previously
3094 been finalized, as required by AMOP.
3095 * minor code generation optimizations:
3096 ** better register allocation in CLOS dispatching functions
3097 ** overflow detection when coercing signed bytes to fixnums on x86-64
3098 ** is now implemented with one IMUL instruction instead of three shifts
3099 ** more efficient bit-vector access on x86 and x86-64
3100 ** more efficient access to raw structure slots on x86 and x86-64
3101 * fixed some bugs revealed by Paul Dietz' test suite:
3102 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3103 return its argument.
3105 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3106 * feature: thread support on Solaris/x86, and experimental thread support
3108 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3110 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3111 default method for SLOT-UNBOUND.
3112 * minor incompatible change: prevent the user from specializing the
3113 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3114 somewhat counter to the intent of the protocol, I (CSR) think, and
3115 additionally it just doesn't work in SBCL as currently
3116 implemented, thanks to optimizations (that are always valid for
3117 the other three SLOT-VALUEish functions, but not for the setter).
3118 * minor incompatible change: the :SB-LDB feature is now enabled by
3119 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3120 the low-level debugger.
3121 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3122 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3123 down to an SB-SYS:FD-STREAM, allowing direct communication in
3124 more cases. Temporary files and pipes are still used as a fallback
3126 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3127 on the non-reentrant C functions localtime(3) and gmtime(3).
3128 * bug fix: global optimization policy was not visible in LOCALLY and
3130 * bug fix: class objects can be used as specializers in methods.
3131 (reported by Pascal Costanza)
3132 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3133 with a type error. (reported by blitz_ on #lisp)
3134 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3135 failed with a type error. (reported by Pascal Bourguignon)
3136 * bug fix: merging pathnames against defaults with :DIRECTORY
3137 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3138 (reported by James Y Knight)
3139 * bug fix: saving large (>2GB) cores on x86-64 now works
3140 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3141 constant index and a (simple-array (signed-byte 32)) array
3142 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3143 error (patch by Robert J. Macomber)
3144 * feature: TIME now displays the amount of run-time spent in GC
3145 * bug fix: The debugger now does a better job of respecting
3146 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3147 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3148 workaround for bug 403.)
3149 * bug fix: floating point exception handling now works on FreeBSD
3150 (thanks to NIIMI Satoshi)
3151 * fixed some bugs revealed by Paul Dietz' test suite:
3152 ** MISC.641: LET-conversion were not supposed to work in late
3154 * improvements to the Win32/x86 port:
3155 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3156 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3158 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3159 * new feature: source path information is generated for macro-expansion
3160 errors for use in IDE's like Slime (thanks to Helmut Eller)
3161 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3162 * bug fix: compiler does not loop forever on an invalid type in
3164 * improvement: compilation of most CLOS applications is significantly
3166 * optimization: added a limited bytecode compiler for simple toplevel
3167 forms, speeding up compilation and FASL loading
3168 * bug fix: the statistical profiler now properly distinguishes anonymous
3171 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3172 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3173 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3174 into subclasses of the finalized class. Now user calls to
3175 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3176 system return before any subclasses are finalized.
3177 * minor incompatible change: The reader no longer ignores errors
3178 regarding non-existent packages in #+ and #- feature tests.
3179 * new feature: command line options --no-sysinit, --no-userinit to
3180 inhibit loading the corresponding init files
3181 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3182 for sending data through UDP sockets (thanks to François-René Rideau)
3183 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3184 error is signalled instead (thanks to François-René Rideau)
3185 * minor incompatible change: Error signalling behaviour of lexical
3186 operations violating package locks has changed slightly. Refer to
3187 documentation on package locks for details.
3188 * enhancement: EVAL can process IF-expressions without resorting to the
3190 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3191 constant-folded properly due to missing out-of-line functions.
3192 (reported by Mika Pihlajamäki)
3193 * bug fix: LISTEN sometimes returned T even in cases where no data was
3194 immediately available from the stream
3195 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3196 were reversed. (reported by Levente Mészáros)
3197 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3198 when given a vector displaced to an adjustable array. (reported
3200 * bug fix: derivation of float boundaries from numbers outside the
3201 appropriate float range (reported by John Wiseman)
3202 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3204 * bug fix: precomputing cache entries for generic functions with
3205 some subclasses of specializers as yet invalid does not attempt to
3206 fill a cache line with a negative offset. (reported by Levente
3208 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3209 allow condition class objects as arguments to DOCUMENTATION and
3210 (SETF DOCUMENTATION); only find and set documentation for
3211 structure names for the STRUCTURE doc-type. (suggested by Gary
3213 * improvements to the Win32/x86 port:
3214 ** (user-homedir-pathname) and default initialization file
3215 locations now know about the user's "Documents and Settings"
3216 directory (thanks to Yaroslav Kavenchuk)
3217 ** run-program is implemented (thanks to Mike Thomas)
3218 ** sockets support (thanks to Timothy Ritchey)
3219 ** better backtrace support (thanks to Alastair Bridgewater)
3220 ** sb-grovel supported
3221 ** asdf-install and sb-posix work somewhat
3222 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3223 * improvements to the Solaris/x86 port:
3224 ** works on Solaris 11/Solaris Express
3225 ** floating-point exception handling support
3226 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3227 * fixed some bugs revealed by Paul Dietz' test suite:
3228 ** REMOVE-METHOD returns its generic function argument even when
3229 the method is not one of the generic functions' methods.
3230 ** objects declared as MEMBER types can be admissible arguments to
3231 structure accessors.
3232 ** printing characters should simply be printed by the FORMAT ~:C
3234 ** compiler failure when compiling functions with hairy constant
3235 defaults for optional parameters.
3236 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3237 function, which is already optimized.
3239 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3240 * new platform: experimental support for SBCL x86/Darwin, including
3241 MacOS X 10.4.5 on Intel.
3242 * new feature: Unicode character names are now known to the system
3243 (through CHAR-NAME and NAME-CHAR).
3244 * new feature: the filesystem location of SBCL's core file is
3245 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3246 * minor incompatible change: the contrib modules SB-POSIX and
3247 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3248 this change is to make it easier to distribute
3249 location-independent binaries.
3250 * bug fix: as implied by AMOP, standardized classes no longer have
3251 slots named by external symbols of public packages. (reported by
3253 * optimization: calling functions via constant symbols -- as in
3254 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3255 via the function object as in (FUNCALL #'FOO).
3256 * optimization: on x86 and x86-64, the calling convention for the
3257 case of dealing with an unknown number of values has been altered
3258 to be friendlier to the prediction heuristics implemented,
3259 particularly with reference to CALL and RET pairing. (thanks to
3260 Alastair Bridgewater)
3261 * optimization: on x86, the code for access to thread-local symbol
3262 values and binding/unbinding of thread-local symbols is smaller.
3263 (thanks to Alastair Bridgewater)
3264 * enhancement: CONSTANTP is now able to determine constantness of
3265 more complex forms, including calls to constant-foldable standardized
3266 functions and some special forms beyond QUOTE.
3267 * fixed bug: occasional GC crashes on Solaris/x86
3268 * optimization: x86-64 supports stack allocation of results of simple
3269 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3270 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3271 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3272 (thanks to James Knight)
3273 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3274 by the standard (thanks to Stephen Compall)
3276 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3277 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3278 be used for bundling the runtime and the core file into one
3279 executable binary. This feature is not currently supported on all SBCL
3280 platforms. (thanks to James Bielman and NIIMI Satoshi)
3281 * new feature: a generational or ephemeral garbage collector is now
3282 the default on the PowerPC platform (both Linux and Darwin). The
3283 old Cheney (stop and copy) collector is a build-time option.
3284 (thanks to Cyrus Harmon, after Raymond Toy)
3285 * minor incompatible change: the method by which SBCL finds its
3286 contributed modules has changed; it no longer relies on symbolic
3287 links from an $SBCL_HOME/systems directory, but searches directly
3288 in the subdirectories of $SBCL_HOME.
3289 * enhancement: the dynamic heap size on the Linux/PPC platform is
3290 markedly larger, even using the older Cheney garbage collector.
3291 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3292 certain complicated string types. (reported by Gary King)
3293 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3294 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3295 * fixed bug: DOCUMENTATION on structures no longer signals an
3296 error if no structure type of the right name exists. (reported by
3298 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3299 applicable non-standard primary or :AROUND method on
3300 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3301 no longer cause unbound variable errors. (reported by Kevin Reid)
3302 * fixed bug: metacircle resolution in cases where methods have slots
3303 added before the slots from STANDARD-METHOD. (reported by Jean
3305 * fixed bug: the Power PC assembly code for calling into lisp
3306 sometimes computed its return address wrongly (depending on the
3307 15th bit of the address, fixed at link time). This used to
3308 manifest itself in a segmentation violation while building PCL.
3309 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3310 many others over the years)
3311 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3312 the stack pointer (treated as a signed integer) is negative.
3313 (thanks to Peter van Eynde)
3315 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3316 * new platform: experimental support for the Windows operating
3317 system has been added. (thanks to Alastair Bridgewater)
3318 * fixed several bugs in and robustified the PPC FFI (including
3319 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
3320 * bug fix: allow non-simple string symbol names (reported by Paul
3322 * bug fix: interrupt handling on NetBSD (thanks to Richard M
3324 * bug fix: saving a core corrupted callbacks on x86/x86-64
3325 * bug fix: closed a loophole in metacircularity detection and
3326 grounding in the PCL implementation of CLOS.
3327 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
3328 (reported by tomppa on #lisp)
3329 * bug fix: clear the direction flag on Lisp -> C transitions, as
3330 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3331 (reported by Andrej Grozin and Hendrik Maryns)
3332 * optimization: major improvements to GC efficiency on GENCGC platforms
3333 * optimization: faster implementation of EQUAL
3334 * optimization: emit more efficient opcodes for some common
3335 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3336 * optimization: several other minor code-generation improvements on x86-64
3337 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3339 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3340 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3341 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3342 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3343 by ANSI as a generic function, and for consistency (SETF
3344 GENERIC-FUNCTION-NAME) is treated likewise.
3345 * fixed bug #233.b: make constraint propagation notice when a variable
3346 value is changed after it is referenced but before it is used
3347 * fixed bug #296: no more arbitrary behaviour from filenames with
3348 odd characters as --load arguments. (reported by Adam Warner)
3349 * fixed bug #390: :CHARACTER-SET pathname components now work as
3350 expected. (reported by Tim Daly Jr)
3351 * fixed bug #391: complicated :TYPE intersections in slot
3352 definitions no longer cause an error in PCL internals.
3353 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3354 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3355 returning the number of octets which would be written to the
3356 file-stream. (thanks to Robert J. Macomber)
3357 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3358 arguments to the internal stream functions. (thanks to David
3360 * bug fix: stack exhaustion is now handled on the x86/SunOS
3361 platform. (thanks to Daisuke Homma)
3362 * bug fix: more accurate ROOM results on GENCGC platforms
3363 * optimization: improved type inference for arithmetic-for
3364 index variables in LOOP
3365 * optimization: faster floating-point SQRT on x86-64
3366 * fixed some bugs revealed by Paul Dietz' test suite:
3367 ** DOCUMENTATION returns NIL instead of "" for method combinations
3368 that don't have a docstring
3370 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3371 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3372 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3373 therefore are not customizeable by user code (as seems to be at
3374 least permitted and maybe required by AMOP). As a consolation,
3375 however, the SBCL implementation of these functions now calls
3376 REINITIALIZE-INSTANCE as specified by AMOP.
3377 * bug fix: slot-definition documentation is propagated as per ANSI
3378 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3379 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3380 argument, as do eslotd initialization methods. (from Pascal
3381 Costanza's "Closer" project)
3382 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3383 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3385 * bug fix: it is now possible to have more than one subclass of
3386 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3387 (reported by Bruno Haible, Pascal Costanza and others)
3388 * bug fix: the dependent update protocol now works for generic
3389 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3390 and Pascal Costanza)
3391 * bug fix: condition-class instances corresponding to
3392 DEFINE-CONDITION forms are now created eagerly. (reported by
3393 Kalle Olavi Niemitalo on comp.lang.lisp)
3394 * bug fix: floating point printing is more accurate in some
3395 circumstances. (thanks to Simon Alexander)
3396 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3397 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3398 * bug fix: callbacks on OS X now preserve stack-alignment.
3399 (thanks to Cyrus Harmon)
3400 * enhancement: the x86-64 disassembler is much better at
3401 disassembling SSE instructions. (thanks to Lutz Euler)
3402 * enhancement: CHECK-TYPE on a variable now allows type-inference
3403 (thanks to Vincent Arkesteijn)
3404 * optimization: improved performance of EUC-JP external format.
3405 (thanks to NIIMI Satoshi)
3406 * optimization: performance improvements to IO on file streams of
3407 :ELEMENT-TYPE CHARACTER
3408 * optimization: much faster memory allocation on x86-64
3409 * optimization: faster garbage collections (latency and throughput)
3411 * optimization: faster bignum subtraction and division on x86 and x86-64
3412 (thanks to Lutz Euler)
3413 * optimization: more accurate type-inference for loops that use a
3414 floating point index variable or a negative step.
3416 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3417 * bug fix: add a workaround to SBCL looping infinitely at startup on
3418 Linux kernels with apparently buggy implementations of personality().
3419 (thanks to Svein Ove Aas)
3420 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3421 (thanks to David Lichteblau)
3422 * bug fix: local bindings shadow global symbol macros for
3423 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3424 * optimization: non-open coded uses of numeric comparison operators
3425 (e.g. >) no longer cons when called with more than one parameter
3426 on platforms supporting dynamic-extent allocation.
3427 * enhancement: saving cores with foreign code loaded is now supported
3428 on MIPS/Linux in addition to the previously supported platforms.
3429 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3430 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3431 * bug fix: division by zero in sb-sprof when no samples were collected
3432 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3433 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3434 (thanks to Alexander Kjeldaas)
3435 * new feature: ignoring the return values of destructive functions
3436 like NREVERSE signals a compile-time style-warning.
3437 (thanks to Kevin Reid)
3438 * new feature: the alignment of alien structure fields can be
3439 explicitly specified. (thanks to Cyrus Harmon)
3440 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3441 and dump core on SIGQUIT
3443 ** incompatible change: threads do not inherit values of specials
3444 from their parents (see manual)
3445 ** bug fix: threads stacks belonging to dead threads are freed by the
3446 next exiting thread, no need to gc to collect thread stacks anymore
3447 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3448 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3449 ** bug fix: dynamic variable and thread start related gc lossage
3450 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3452 * fixed some bugs revealed by Paul Dietz' test suite:
3453 ** SUBTYPEP is slightly more accurate on heinously complicated
3454 CONS types where some of the members have uncertain (in the
3455 NIL, NIL sense) type relationships to each other.
3457 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3458 no longer purified unless :PURIFY T is explicitly specified.
3459 ** Non-purified cores are significantly smaller than before
3461 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3462 * new feature: timers based on Zach Beane's excellent timer package
3463 * added support for the following external formats: koi8-u,
3464 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3465 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3466 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3467 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3468 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3469 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3470 * incompatible change: a threaded SBCL will no longer revert to
3471 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3472 * bug fix: interrupts are disabled until startup is complete; no
3473 more sigsegvs when receiving a signal to soon
3474 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3476 * bug fix: add a workaround for the memory randomization features in
3477 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3478 workaround will only be in effect on systems with the proc filesystem
3480 * bug fix: printing objects of type HASH-TABLE signals a
3481 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3483 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3484 have been running for over 50 days. (reported by Gilbert Baumann)
3485 * bug fix: the logic for getting names of functions gets less
3486 confused when confronded with alternate-metaclass
3487 funcallable-instances. (reported by Cyrus Harmon)
3488 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3489 consistent, even on internal alternate-metaclass objects.
3490 * bug fix: flush closure information collected by physical
3491 environment analysis prepass before the main pass. (bug reported
3493 * bug fix: compiler pack phase does not modify a hashtable, which is
3494 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3495 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3496 may be expanded. (reported by Alexander <malishev> on c.l.l)
3497 * bug fix: no more style-warnings when compiling code using LAST
3498 under high-SPEED low-SPACE settings. (reported by David Wallin
3500 * fixed some incompatibilities between SBCL's MOP and the MOP
3502 ** the METAOBJECT class is now implemented;
3503 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3504 STANDARD-OBJECT, as required;
3505 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3506 now compatible (as required by VALIDATE-SUPERCLASS); there
3507 remains a consistency requirement over the presence or absence
3508 of the FUNCTION class in the superclass list of finalized
3509 classes; see the manual for more details;
3510 ** the :AROUND method for COMPUTE-SLOTS on
3511 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3512 requested slot ordering.
3514 ** bug fix: parent thread now can be gc'ed even with a live
3516 ** bug fix: binding a special with PROGV to no value is not
3517 the same as that symbol not having been bound (thanks to
3519 ** bug fix: binding specials is thread safe (thanks to
3521 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3522 and SB-SPROF do not die with 'no handler for signal XX in
3523 interrupt_handle_now(..)' anymore
3524 ** bug fix: WITH-TIMEOUT works with multiple running threads
3525 * fixed some bugs revealed by Paul Dietz' test suite:
3526 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3527 the :method-class keyword argument.
3529 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3530 * new port: the Solaris operating system on x86 processors is now
3531 mostly supported, though some rough edges in the environment
3532 remain. (thanks to Daisuke Homma)
3533 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3534 space for its heap. (thanks to Thiemo Seufer)
3535 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3536 closures. (thanks to Thiemo Seufer)
3537 * minor incompatible change: eof selects abort in the debugger.
3538 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3539 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3541 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3542 deprecated, and will go away in a future revision of SBCL.
3543 * minor incompatible change: GC-ON and GC-OFF are no longer
3544 implemented with a counter, it does not matter how many times gc
3545 is switched on or off
3546 * bug fix: discriminating functions for generic function classes
3547 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3548 make invalid assumptions about method precedence order. (reported
3550 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3551 platforms. (thanks to Thiemo Seufer)
3552 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3553 * bug fix: correct pathname printing with printer escaping is on.
3554 (thanks to Kevin Reid)
3555 * bug fix: complex VOP definitions in "user-space" no longer trigger
3556 package locks. (reported by Zach Beane)
3557 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3558 for funcallable-instance functions, and is no different from
3560 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3561 characters in the current readtable. (reported by Nicholas Neuss)
3562 * bug fix: SUBTYPEP on various CONS types returns more a more
3563 accurate acknowledgment of its certainty.
3564 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3565 lists in some cases. This partially fixes bug 384.
3566 * flush all standard streams before prompting in the REPL and the
3568 * bug fix: signal handling and triggering gc do not conflict
3569 directly anymore, in particular a high frequency sb-sprof does
3570 not prevent gc from running
3571 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3572 approximation for timezone and DST information between the
3573 universal time epoch and the smallest negative 32-bit time_t.
3574 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3575 year 1899 so long as the encoded time is non-negative.
3576 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3577 the correct answer for non-constant rotate amounts when performing
3578 an inline 32-bit rotation.
3580 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3581 there is only one thread in the session
3582 ** bug fix: memory leak for streams created in one thread and
3583 written to in another
3584 ** bug fix: lockup when compiled with gcc4
3585 ** bug fix: race that allows the gc to be triggered when gc is
3587 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3588 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3590 ** bug fix: finished threads are gc'ed properly
3591 * fixed some bugs revealed by Paul Dietz' test suite:
3592 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3593 has arguments with a different set of applicable methods from
3594 the orignal arguments.
3595 ** The type error thrown by MAP now has a correct expected-type
3597 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3598 name a compiled function.
3599 ** Three MISC tests where a large bignum was improperly coerced to
3600 a float that couldn't represent that bignum during type
3601 derivation were fixed.
3602 ** SUBTYPEP can now handle types involving the negation of a
3603 list-form FUNCTION type.
3604 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3605 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3606 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3608 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3609 * New feature: Experimental support for bivalent streams: streams
3610 opened with :element-type :default now allow character and binary
3611 (unsigned-byte 8) I/O
3612 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3613 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3615 * bug fix: no more highly sporadic "couldn't check whether ~S is
3616 readable" when reading a stream and an interrupt hits in the middle
3617 of a select system call
3618 * compiler better recognizes complex arrays (reported by Eduardo
3620 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3621 for variables on SBCL built with linkage-tables. (reported by Luis
3623 * various error reporting improvements.
3624 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3625 (Thanks to Thiemo Seufer)
3626 * bug fix: nested reader invokations work correctly
3627 * bug fix: it is possible to have simultaneous references to foreign
3628 code and foreign data with the same name.
3630 ** added x86-64 support
3631 ** incompatible change: the threading api now works with thread
3632 objects instead of thread ids
3633 ** bug fix: threads are protected from signals and interruption when
3634 starting up or going down
3635 ** bug fix: a race where an exiting thread could lose its stack to gc
3636 ** bug fix: don't halt on infinite error in threads if possible
3637 ** fixed numerous gc deadlocks introduced in the pthread merge
3638 ** bug fix: fixed thread safety issues in read and print
3639 ** bug fix: debugger doesn't hang on session lock if interrupted at
3640 an inappropriate moment
3641 ** bug fix: run-program is now thread safe(r)
3642 ** bug fix: inner with-recursive-lock no longer releases the mutex
3643 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3644 * fixed some bugs revealed by Paul Dietz' test suite:
3645 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3646 EXPECTED-TYPE slots filled.
3647 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3649 ** MAKE-CONDITION accepts classes as type-designators.
3650 ** COMPILE may never return NIL.
3651 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3652 range before calling Unix time functions
3654 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3655 * numerous signal handling fixes to increase stability
3656 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3657 * minor incompatible change: we now correctly canonize default
3658 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3659 as per the MOP, rather than the historical (INITARG INITFUNCTION
3660 INITFORM). (reported by Bruno Haible)
3661 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3662 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3663 for more information.
3664 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3665 pathname is a directory pathname.
3666 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3667 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3669 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3670 :METACLASS argument in addition to a class name. (reported by
3671 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3672 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3673 (reported by Bruno Haible; patch from Gerd Moellmann)
3674 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3676 * bug fix: more cleanups to the floating point exception handling on
3677 x86-64 (thanks to James Knight)
3678 * bug fix: the compiler does not try to constant fold calls of
3679 COERCE and BIT-* functions when they return freshly constructed
3680 objects. (reported by Nikodemus Siivola and Paul Dietz)
3681 * optimization: improved the MIPS versions of generic (in the
3682 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3683 * optimization: direct conversion of (unsigned-byte 32) to floats on
3684 the PowerPC platform.
3685 * optimization: structure instances with raw slots now use less
3686 memory, and probably show better memory locality. (thanks to
3688 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3689 are treated as requests for stack allocation on the x86-64,
3690 Alpha-32, PPC and SPARC platforms.
3691 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3692 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3693 (thanks to Tony Martinez)
3695 ** gcing a dead thread can no longer lead to lockups
3696 ** threads block signals until they are set up properly
3697 ** errno is no longer shared by threads
3698 ** interrupt-thread restores the eflags register on x86
3699 ** fixed some lockups due to gc/thread interaction
3700 * fixed some bugs revealed by Paul Dietz' test suite:
3701 ** invalid dotted lists no longer raise a read error when
3702 *READ-SUPPRESS* is T
3703 ** signal an error if a symbol that names a declaration is used
3704 as the name of a type, or vice versa
3705 ** allow using the (declare (typespec var*)) abbreviation for
3706 (declare (type typespec var*)) with all type specifiers
3707 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3708 ** always return NIL from PPRINT-POP when OBJECT is NIL
3709 ** don't signal errors when pretty-printing malformed LABELS,
3710 FLET or MACROLET forms
3711 ** declarations in a DOLIST body are also in scope for the
3713 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3715 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3718 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3719 * fixed cross-compiler leakages that prevented building a 32-bit
3720 target with a 64-bit host compiler.
3721 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3722 opened with :IF-EXISTS :OVERWRITE.
3723 * fixed bug 281: error for an invalid qualifier in a short-form method
3724 combination method is not signalled until the faulty method is called.
3725 * bug fix: iteration variable type inferrer failed to deal with open
3726 intervals. (reported by Alan Shields)
3727 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3728 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3729 or more runtime options were provided to the sbcl binary.
3730 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3731 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3732 * optimization: there's now a fast-path for fixnum arguments in the
3733 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3734 * optimization: the code generated on x86-64 is more compact thanks
3735 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3736 * bug fix: floating-point exception handling now partly works on
3737 x86-64. (Thanks to James Knight)
3738 * improvement to the MIPS backend from Thiemo Seufer: C-style
3739 64-bit long long arguments and return values to alien functions
3741 * fixed some bugs revealed by Paul Dietz' test suite:
3742 ** the type-error signalled from WARN has a filled-in DATUM slot.
3743 ** the type-error required when a stream is not associated with
3744 a file has the stream as its datum.
3745 ** type-errors on single-floats on x86-64 no longer have
3746 :INVALID-OBJECT as the datum
3747 ** the type-errors signalled for invalid function names now have
3748 a correct expected type
3749 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3750 for structures defined with a :TYPE. Documentation strings for
3751 typed structures are no longer immediately discarded
3752 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3753 broadcast streams and synonym streams. FILE-LENGTH now also works
3754 on broadcast streams.
3756 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3757 * incompatible change: the --noprogrammer option, deprecated since
3758 version 0.7.5, has been removed. Please use the equivalent
3759 --disable-debugger option instead.
3760 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3762 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3763 inoperational for a while now) has been completely removed.
3764 * null lexical environments are now printed as #<NULL-LEXENV>,
3765 significantly reducing the amount of clutter in typical backtraces.
3766 * documentation on weak pointers, finalization, and after GC hooks
3767 has been added to the manual.
3768 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3769 as other specialized array types, is much faster. SUBSEQ and
3770 COPY-SEQ on such arrays have also been sped up.
3771 * optimization: EQL is now more efficient when at least other argument
3772 is known to be of type (OR FIXNUM (NOT NUMBER)).
3773 * fixed bug: the runtime is now less vulnerable to changes in the
3774 size of the SBCL object on OS X, and virtual memory is reserved for
3775 all spaces that need to be at a fixed address.
3776 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3777 * fixed bug: finalizers and after GC hooks that cause consing are now
3779 * fixed bug: compiler error messages and summaries are now printed to
3780 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3781 * fixed inference of the upper bound of an iteration variable.
3782 (reported by Rajat Datta).
3783 * fixed bug 211e: calling local functions with duplicated constant
3784 keyword argument no longer causes a bogus style warning about an
3786 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3787 ftype declaration to be disregarded. (reported by Dave Roberts)
3788 * fixed bug 373: caused by erronous compilation of references to alien
3789 variables in the runtime on ppc/darwin.
3790 * fixed bug 376: CONJUGATE type deriver.
3791 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3792 (reported by Baughn on #lisp)
3793 * a cross-compiler bug on non-x86 platforms has been identified and
3794 fixed. (thanks to Bruno Haible)
3795 * improvements to the MIPS runtime code for increased stability.
3796 (thanks to Thiemo Seufer)
3797 * increased the maximimum compact environment size to allow
3798 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3799 * partial workaround for bug 135: don't name the function we're
3800 calling for hairy cases of EVAL, so as not to accumulate one environment
3801 entry per call to EVAL. (reported by Kevin Reid)
3802 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3803 * optimization: type testing for non-vector arrays should be faster.
3804 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3806 * bug fix: setting 31st element of a bit vector to zero did not work
3808 * bug fix: redefining a class definition which failed due to a
3809 previous accessor / function clash now works (but see BUGS entry
3810 #380 for more problems in this area). (thanks to Zach Beane)
3811 * the long form of DEFINE-METHOD-COMBINATION disables method group
3812 checking when given a single method group with pattern *. (thanks
3814 * on x86 compiler supports stack allocation of results of simple
3815 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3816 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3817 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3818 * fixed some bugs related to Unicode integration:
3819 ** the restarts for recovering from input and output encoding
3820 errors only appear when there is in fact such an error to
3822 * fixed some bugs revealed by Paul Dietz' test suite:
3823 ** MISC.549 and similar: late transformation of unsafe type
3824 assertions into derived types caused unexpected code
3826 ** SCALE-FLOAT type deriver is less wrong.
3827 ** type derivers for EXP, LOG and similar functions compute result
3828 types for complex arguments better.
3829 ** (MISC.563) CONJUGATE type deriver works for very restricted
3831 ** out-of-line type testers for character strings are available.
3832 ** EQUAL compiler transform understands specialness of objects
3834 ** accessing double-floats stored on the stack now works on x86-64.
3835 ** debugger internals could sometimes create invalid lispobjs,
3836 resulting in GC crashes.
3837 ** MISC.548: type check weakening can convert required type into
3839 ** initialization forms for bindings are not in scope of free special
3842 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3843 * incompatible change: thread support for non-NPTL systems has
3844 been removed - locking is buggy and unreliable. A threaded
3845 SBCL build will now warn at startup and refuse to create
3846 new threads, unless futex support is detected in the kernel
3847 * incompatible change: the top level REPL now has only an ABORT
3848 restart associated with it, not TOPLEVEL and ABORT as it used to.
3849 TOP and TOPLEVEL are now available as debugger commands for
3850 returning to the top level.
3851 * incompatible change: forms evaluated in the REPL now use the
3852 global optimization policy.
3853 * incompatible change: user- and system-initialization files are
3854 no longer processed with LOAD, but by READ and EVAL; hence the
3855 global optimization policy, startup package, readtable, etc,
3857 * The .fasl file format number has been incremented because of
3858 various incompatible changes.
3859 * internal entry point details and argument counts no longer appear
3860 in backtraces unless explicitly requested by setting
3861 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3862 * built-in and standard functions no longer have names like "top
3863 level local call to FOO".
3864 * fixed bug 32: functions defined in non-null lexical environments
3865 now have more legible printed representation
3866 * fixed bug 33: functions defined in non-null lexical environemnts
3867 are now more amenable to inspection by INSPECT.
3868 * workaround for bug 354: XEPs no longer appear in backtraces unless
3869 explicitly requested.
3870 * fixed bug: receiving the signal which results from attempting to
3871 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3872 SIGBUS on other *BSDs) on architectures where the C stack is also
3873 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3874 to debugger confusion or wild instability. (reported by Cheuksan
3876 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3877 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3878 (reported by Lutz Euler)
3879 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3880 compiled code. (reported by Paul Dietz)
3881 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3882 specialized parameter to a method to something that is not TYPEP
3883 the specializer is now possible.
3884 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3885 face of package deletion.
3886 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3887 pathname. (reported by David Tolpin on c.l.l)
3888 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3889 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3890 STRING-STREAM and FILE-STREAM, respectively.
3891 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3892 than previously; in addition, its test suite is now run on build.
3893 (thanks to Luke Gorrie)
3894 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3895 * optimization: added a immediate representation for single-floats
3897 * fixed some bugs revealed by Paul Dietz' test suite:
3898 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3899 ** attempting to create a package with a colliding nickname causes
3900 correctable errors to be signalled.
3901 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3902 ** several x86-64 backend bugs related to sign-extension of immediate
3905 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3906 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3907 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3909 * fixed loading of multiply forward-referenced layouts.
3910 (thanks to Cheuksan Wang)
3911 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3912 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3913 (see COMPILE-FILE documentation for details of :PRINT option)
3914 * fixed bugs 19 and 317: fixed-format floating point printing is
3915 more accurate. This also fixes a bug reported by Adam Warner
3916 related to the ~@F format directive.
3917 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3919 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3920 dispatch table if the from-char is a dispatch macro character.
3921 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3922 by the wordsize no longer ignore the last word. (reported by Lutz
3924 * fixed bug in type checking of dynamic-extent variables. (reported
3926 * optimization: sequence traversal functions use their freedom to
3927 coerce function designators to functions.
3928 * optimization: code with many calls to CLOS methods specialized on
3929 CLOS classes has had redundant type checks removed.
3930 * optimization: added declarations to speed up operations that access
3931 the internal character database (for example STRING-UPCASE)
3932 * optimization: comparison operations between floats and sufficiently small
3933 fixnums no longer create extra rationals
3934 * fixed some bugs related to Unicode integration:
3935 ** portions of multibyte characters at the end of buffers for
3936 character-based file input are correctly transferred to the
3937 start of the buffer at the next read.
3938 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3939 passing it through to OPEN.
3940 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3941 argument given to internal calls to OPEN.
3942 ** the built-in comment readers (introduced by character sequences
3943 ";" and "#|") are more forgiving to encoding errors; they will
3944 STYLE-WARN and then attempt to resync the stream at a character
3945 boundary. (thanks to Teemu Kalvas)
3946 * fixed some bugs in the x86-64 port:
3947 ** Negative short int return values from c-calls are sign-extended
3949 ** The stack is aligned to 16-bytes for c-calls, as required by
3950 the ABI. (thanks to Cheuksan Wang)
3951 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3952 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3953 for enums. (thanks to Vincent Arkesteijn)
3954 ** Multiple small optimizations and bugfixes for floating point
3956 * fixed some bugs revealed by Paul Dietz' test suite:
3957 ** Space, Tab, Linefeed, Return and Page have the invalid
3958 secondary constituent character trait.
3959 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3961 ** WITH-INPUT-FROM-STRING should only update the index place on
3963 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3964 works more reliably.
3965 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3966 with one-dimensional arrays with fill pointers.
3967 ** TYPE-OF failed on a complex with an integer realpart and a
3969 ** compiler failure during type inference for the code of form
3970 (IF (EQL X (THE ...)) ...) (MISC.535).
3972 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3973 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3974 platform. The port supports 61-bit fixnums, large memory spaces
3975 and reloading shared object files.
3976 * enhancement: saving cores with foreign code loaded is now
3977 supported on ppc/Darwin in addition to the previously supported
3979 * enhancement: the statistical profiler now walks deeper into the
3980 call stack for more meaningful call-graphs and accrued time
3981 reports (x86/x86-64 only). It also now reports time spent in
3983 * enhancement: it is now possible to trace most individual methods
3984 of a generic function in addition to tracing the generic function
3986 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3988 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3989 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3990 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3991 produces an error. (thanks to Vincent Arkesteijn)
3992 * bug fix: NAMESTRING on pathnames with :WILD components in their
3993 directories works correctly. (thanks to Artem V. Andreev)
3994 * fixed bug 125: compiler preserves identity of closures. (reported
3996 * bug fixed: functions with &REST arguments sometimes failed with
3997 "Undefined function" when compiled with (DEBUG 3). (reported by
3999 * bug fix: overflow during compiling of setting element of a bit
4000 vector with constant index and value. (reported by Timmy Douglas)
4001 * build fix: fixed the dependence on *LOAD-PATHNAME* and
4002 *COMPILE-FILE-PATHNAME* being absolute pathnames.
4003 * on x86 compiler partially supports stack allocation of dynamic-extent
4005 * GO and RETURN-FROM do not check the extent of their exit points
4006 when compiled with SAFETY 0.
4007 * fixed some bugs related to Unicode integration:
4008 ** encoding and decoding errors are now much more robustly
4009 handled; it should now be possible to recover even from invalid
4010 input or output to the terminal. (thanks to Teemu Kalvas)
4011 ** provided a first cut at implementing STRING-TO-OCTETS and
4012 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
4013 ** altered the SB-MD5 contributed module slightly, changing the
4014 interface just enough for it to be supportable for builds where
4015 lisp characters are not eight bits.
4016 * fixed some bugs revealed by Paul Dietz' test suite:
4017 ** the FORMATTER-generated functions for ~V[ conditionals require
4018 the correct number of arguments.
4019 ** READ-FROM-STRING returns the mandated second value when applied
4020 to displaced strings.
4021 ** the #\Rubout and #\Backspace characters are treated as invalid
4022 constituent characters by the tokenizer.
4024 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
4025 * new feature: reloading changed shared object files with
4026 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4027 * new feature: references to foreign variables and functions
4028 can now be compiled and loaded before the corresponding shared
4029 object file is loaded, as long as the foreign definitions are
4030 available at runtime.
4031 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
4032 supported. (thanks to Dan Debertin)
4033 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
4034 just keywords. (thanks to Vincent Arkesteijn)
4035 * fixed bug #331: structure-class instances corresponding to
4036 DEFSTRUCT forms are now created eagerly.
4037 * fixed bug #345: backtraces from calls to undefined functions work
4038 on x86 as well. Related bug #61 is now also partially fixed on x86
4039 (backtraces from throws to unknown catch tags.)
4040 * bug fix: lambda-list parsing is now stricter vrt. order and number
4041 of lambda-list keywords.
4042 * bug fix: as specified by AMOP, an error is signalled if a
4043 class-option appears multiple times in a DEFCLASS form. (reported
4045 * bug fix: RANDOM can be compiled when the compiler derives the type
4046 of its numeric argument as a disjoint set of small integers.
4047 (reported by Paul Dietz)
4048 * bug fix: starting a core saved with shared objects loaded when
4049 those objects are not available no longer causes threaded SBCL to
4050 hang. (reported by Sean Ross)
4051 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
4053 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
4054 argument, which must always be NIL. (reported by Kalle Niemitalo)
4055 * bug fix: printing 1.0d+23 no longer results in an error.
4056 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
4057 * bug fix: structure slot setters preserve evaluation order. (thanks
4059 * fixed some bugs related to Unicode integration:
4060 ** RUN-PROGRAM can allow its child to take input from a Lisp
4061 stream. (reported by Stefan Scholl)
4062 ** ASDF-INSTALL successfully downloads .tar.gz files in all
4063 locales. (reported by Ken Causey)
4064 * fixed some bugs revealed by Paul Dietz' test suite:
4065 ** INCF, DECF and REMF evaluate their place form as specified in
4067 ** FORMATTER expands ~{ ~} iteration directives with V or #
4068 parameters correctly.
4069 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4070 consequent uses no arguments correctly.
4071 ** the system has a partial understanding of the (COMPLEX RATIO)
4073 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4076 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4077 * new feature: a build-time option (controlled by the :SB-UNICODE
4078 keyword feature, enabled by default) for building the system with
4079 support for the entire 21-bit character space defined by the
4081 * new feature: the system now has rudimentary external-format
4082 support; the primary user-visible change at this time is that
4083 characters with the high bit set (such as lower-case-e-acute) will
4084 print correctly to a terminal in a UTF-8 environment.
4085 * minor incompatible change: BASE-CHAR no longer names a class;
4086 however, CHARACTER continues to do so, as required by ANSI.
4087 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4088 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4089 has been moved to the SB-EXT package (temporarily re-exported from
4091 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4092 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4094 * fixed bug #351: better error-handlind and reporting for malformed
4096 * fixed bug #350: bignum-printing is now more memory-efficient,
4097 allowing printing of very large bignums, eg. (expt 2 10000000).
4098 (reported by Bruno Haible)
4099 * fixed bug #302: better primitive-type selection for intersection
4101 * fixed bug #308: non-graphic characters now all have names, as
4102 required. (reported by Bruno Haible)
4103 * bug fix: redefining a class with different superclasses now correctly
4104 removes it from the direct-subclasses of its previous superclasses.
4105 (reported by David Morse)
4106 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4107 new value now works. (reported by Bruno Haible)
4108 * bug fix: correct canonicalization of multiple non-standard slot
4109 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4110 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4111 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4112 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4113 now exists, an signals an error.
4114 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4115 during macroexpansion for non-iteration variables as well. (reported
4116 by Bruno Haible for CMUCL)
4117 * bug fix: Cyclic structures and unprintable objects in compiler
4118 messages no longer cause errors. (reported by Bruno Haible)
4119 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4120 and READ-FROM-STRING all now return a primary value of NIL if
4121 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4122 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4123 (reported by Bruno Haible for CMUCL)
4124 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4125 do not designate a condition. (reported by Bruno Haible for
4127 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4128 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4129 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4130 permitting resolution in favour of any of the conflicting symbols.
4131 (reported by Bruno Haible for CMUCL)
4132 * bug fix: EQUAL compiler optimizations is less aggressive on
4133 strings which can potentially compare true despite having distinct
4134 specialized array element types.
4135 * bug fix: unit enumerations can be defined without dividing by
4136 zero. (thanks to Vincent Arkesteijn)
4137 * FORMAT compile-time argument count checking has been enhanced.
4138 (report from Bruno Haible for CMUCL)
4139 * a partial workaround for the bug 262: the compiler does not try to
4140 inline-expand a local function doing RETURN-FROM from a deleted
4141 BLOCK. (thanks to Peter Denno for the bug report and to David
4142 Wragg for the simple test case)
4143 * fixed some bugs revealed by Paul Dietz' test suite:
4144 ** RENAME-PACKAGE allows all package designators as new package
4146 ** constraint propagation and lambda variable substitution are
4147 more cautious in dealing with partially deleted code.
4148 ** compiler sometimes lost reoptimization passes.
4149 ** CERROR, given a condition as condition designator, passes its
4150 remaining arguments to the continue format control without
4152 ** Case-altering FORMAT directives work correctly on non-ASCII
4154 ** The REAL type specifier handles bounds outside the floating
4155 point ranges without signalling FLOATING-POINT-OVERFLOW.
4156 ** Functions with IR1-transformations can create intercomponent
4157 references to global functions.
4158 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4160 ** FORMAT ~R treats a nil value for its first parameter correctly.
4162 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4163 * enhancement: saving cores with foreign code loaded is now
4164 supported on x86/NetBSD and sparc/Linux in addition to the previously
4165 supported platforms.
4166 * bug fix: on some platforms repeated installations caused multiple
4167 copies of HTML documentation to be installed -- should not happen
4168 any more. (reported by Stefan Scholl)
4169 * bug fix: parsing self-recursive alien record types multiple times
4170 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4171 original patch by Helmut Eller for CMUCL)
4172 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4173 (thanks to Richard Kreuter)
4174 * bug fix: defining classes whose accessors are methods on existing
4175 generic functions in other (locked) packages no longer signals
4176 bogus package lock violations. (reported by François-René Rideau)
4177 * bug fix: special variables as DEFMETHOD parameters no longer have
4178 associated bogus type declarations. (reported by David Wragg and
4180 * bug fix: read-write consistency on streams of element-type
4181 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4182 * bug fix: redefiniton of the only method of a generic function with
4183 no DEFGENERIC no longer emits a full WARNING. In addition,
4184 redefinition of generic functions with no DEFGENERIC to an
4185 incompatible lambda list now signals an error. (thanks to Zach
4187 * bug fix: DEFGENERIC now works even when there's a function of the
4188 same name in an enclosing lexical environment. (thanks to Zach
4190 * fixed compiler failure, caused by instrumenting code during
4191 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4192 * optimization: added loop analysis and improved register allocation
4193 * fixed some bugs revealed by Paul Dietz' test suite:
4194 ** POSITION on displaced vectors with non-zero displacement
4195 returns the right answer.
4196 ** (SIMPLE-STRING) is a valid type specifier for sequence
4198 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4200 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4201 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4203 ** The justification version of the FORMAT ~< directive treats
4204 non-zero minpad parameter correctly.
4206 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4207 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4208 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4209 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4210 the supported interface.
4211 * new feature: Single-stepping of code compiled with DEBUG 2 or
4212 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4213 * new feature: saving cores with foreign code loaded is now
4214 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4215 Timothy Moore's work for CMUCL)
4216 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4217 parameters to * instead of NIL if no initform is supplied.
4218 (reported by Johan Bockgaard)
4219 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4220 correctly when FUNCALL appears as the car of the form. Note:
4221 despite this FUNCALL forms are not currently subject to
4222 compiler-macro expansion. (port of Raymond Toy's fix for the
4223 same from CMUCL, reported by Johan Bockgaard)
4224 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4225 (thanks for Teemu Kalvas)
4226 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4227 case instead of terminating the iteration (thanks for Julian
4228 Squires, Sean Champ and Raymond Toy)
4229 * bug fix: incorrect expansion of defgeneric that caused a style
4230 warning. (thanks for Zach Beane)
4231 * bug fix: slot accessor effective method computation works properly
4232 for classes with multiple non-standard applicable methods on
4233 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4234 * on x86 compiler supports stack allocation of results of LIST and
4235 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4236 CMUCL implementation by Gerd Moellmann)
4237 * fixed some bugs revealed by Paul Dietz' test suite:
4238 ** FORMAT strings with both the ~<~:;~> form of the justification
4239 directive and pretty-printing directives cause an error.
4241 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4242 * incompatible change: the internal functions
4243 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4244 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4245 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4246 instead of the old functions.
4247 * new feature: on platforms where "dladdr" is available foreign
4248 function names now appear in backtraces. (based on Helmut Eller's
4250 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4251 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4253 * documentation: ASDF manual is now distributed with SBCL.
4254 * bug fix: SBCL can now load its contributed modules with REQUIRE
4255 even if the system-provided entries have been removed from
4256 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4258 * bug fix: backtraces involving undefined functions or assembly
4259 routines are more informative. (thanks to Brian Downing)
4260 * bug fix: mutually referent alien structures now work correctly.
4261 (reported by Rick Taube)
4262 * bug fix: structures defined by WITH-ALIEN can be referred to
4263 within other definitions in the same WITH-ALIEN.
4264 * bug fix: division operators (MOD, TRUNCATE and the like) with
4265 constant zero divisors and integer dividends no longer generate
4267 * bug fix: provide default methods for INPUT-STREAM-P and
4268 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4269 * bug fix: improve the detection and resolution of MOP metacycles
4270 (where effective method computation depends on the generic function
4271 having its effective method computed). (reported by Bruno Haible)
4272 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4273 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4274 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4275 * bug fix: pathnames with relative directory components can be
4276 represented relative to default pathnames.
4277 * optimization: in taking the GCD of bignums, reduce the two bignums
4278 to approximately the same size (using Euclid's algorithm) before
4279 applying the more sophisticated binary GCD. (thanks to Juho
4281 * optimization: COUNT on bitvectors now operates word-at-a-time.
4282 * optimization: ASH with a positive, but not necessarily constant,
4283 (leftwards) shift, when in a modular context, is compiled to a
4285 * fixed some bugs revealed by Paul Dietz' test suite:
4286 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4287 if the corresponding argument is NIL.
4288 ** FORMAT directives accepting a minpad parameter treat negative
4290 ** literal commas as character parameters to FORMAT directives are
4292 ** literal spaces directly after ~<Newline> directives within a
4293 format-logical-block (~:< ~@:>) do not induce :FILL-style
4294 conditional newlines.
4295 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4296 as specified: it no longer includes conditional newlines).
4297 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4299 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4300 :PER-LINE-PREFIX argument does not evaluate to a string.
4302 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4303 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4304 the manual for details; for now, package locks can be disabled by
4305 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4306 if no major problems are found then it is likely that they will be
4307 compiled in unconditionally.
4308 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4309 unsupported operators on all platforms. To load a shared library
4310 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4311 object file, link it into a shared library outside of SBCL and
4312 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4314 * bug workaround: ROOM T and the GC were not working together
4315 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4316 reporting facility aren't preserved. That reporting has been
4317 disabled, so now until and unless someone figures out how to make it
4318 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
4319 * minor incompatible change: as threatened around sbcl-0.8.0, the
4320 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
4321 The symbols are also exported from SB-PCL for backwards
4322 compatibility, but more so than before SB-PCL should be treated as
4323 an implementation-internal package.
4324 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
4326 * the SB-SPROF contrib now works on (most) non-x86 architectures.
4327 It is known as of this release not to work on the Alpha, however.
4328 * fixed bug #167: errors signalled due to illegal syntax in method
4329 bodies are now more legible.
4330 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4331 designators and can hence be used with TYPEP.
4332 * fixed bug #333: CHECK-TYPE now ensures that the type error
4333 signalled, if any, has the right object to be accessed by
4334 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4335 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4336 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4338 * fixed bug #334: programmatic addition of slots using specialized
4339 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4340 and :ALLOCATION :CLASS slots.
4341 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4342 float exponents. (rereported by Peter Seibel)
4343 * fixed a bug: #\Space (and other whitespace characters) are no
4344 longer considered to be macro characters in standard syntax by
4345 GET-MACRO-CHARACTER.
4346 * fixed bug: initialization of condition class metaobjects no longer
4347 causes an instance of the condition to be created. (reported by
4349 * fixed bug: it is now possible to have slots such that
4350 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4351 description is neither :INSTANCE nor :CLASS.
4352 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4353 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4354 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4355 non-standard SLOT-DEFINITION-ALLOCATION values.
4356 * fixed bugs: various race conditions handling exiting threads.
4357 CL-PPCRE's thread torture test now passes.
4358 * fixed arguably-a-bug: GC time proportional to number of threads in
4359 system even when most of them are idle
4360 * optimization: improved performance of BIT and SBIT on bit-vectors.
4361 * .fasl file incompatibility: The fasl file version number has
4362 been incremented because of changes associated with package locks.
4364 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4365 * minor incompatible change: the system no longer provides
4366 optimization hints (conditions which are TYPEP
4367 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4368 mode; these hints are still emitted when higher SPEED optimization
4370 * new contrib module: a sampling profiler (profiling by statistical
4371 sampling, rather than by instrumenting functions) is available as
4372 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4373 * the behaviour of the standard function ED is now customizeable by
4374 third parties through a hook variable: see ED's documentation
4375 string for information on the protocol.
4376 * the compiler no longer emits efficiency notes for (FUNCALL X)
4377 when the type of X is uncertain under default optimization
4379 * fixed bug 276: mutating a binding of a specialized parameter to a
4380 method to something that is not TYPEP the specializer is now
4382 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4383 exhibit the required behaviour on the x86 platform. (thanks to
4384 Peter van Eynde, Eric Marsden and Bruno Haible)
4385 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4386 even for difficult arguments. (reported by Peter Graves)
4387 * fixed bug 141a: the backquote printer now descends quoted
4389 * fixed another bug in backquote printing: no more destructive
4390 modification of the form's list structure. (reported by Brian
4392 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4393 move between its address being taken and the call to
4394 interrupt_thread, fixing a crashing race condition.
4395 * the SB-POSIX contrib implementation has been adjusted so that it
4396 no longer exhibits ridiculously poor performance when constructing
4397 instances corresponding to C structs.
4399 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4400 * minor incompatible change: the sb-grovel contrib now treats C
4401 structures as alien (in the sense of SB-ALIEN) objects rather than
4402 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4403 has implications for memory management of client code
4404 (sb-grovel-returned objects must now be manually managed) and for
4405 type safety (alien objects now have full types).
4406 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4407 used to control emission of compiler diagnostics, rather than the
4408 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4409 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4410 quality should be considered deprecated.
4411 * install.sh now installs the user manual as well
4412 * (not quite a new documentable feature, but worth considering in
4413 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4414 beginnings of a semantically meaningful condition hierarchy is
4415 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4417 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4418 designator as the defaults argument.
4419 * fixed bug: Displaced arrays whose displaced-to array has become
4420 too small now cause ARRAY-DIMENSION to signal an error, providing
4421 for safer bounds-checking. (reported by Bruno Haible)
4422 * fixed bug: DEFCLASS slot definitions with identical :READER and
4423 :WRITER names now signal a reasonable error. (reported by Thomas
4425 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4427 * fixed bug: Invalid slot specification errors now print correctly.
4428 (thanks to Zach Beane)
4429 * fixed bug 320: Shared to local slot value transfers in class
4430 redefinitions now happen corrently from superclasses as
4431 well. (reported by Bruno Haible)
4432 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4434 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4435 improper lists correctly. (reported by Bruno Haible)
4436 * fixed bug 313: source-transform for <fun-name> was erroneously
4437 applied to a call of a value of a variable with name <fun-name>.
4438 (reported by Antonio Menezes Leitao)
4439 * fixed bug 307: The obsolete instance protocol ensures that
4440 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4441 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4442 remove dead unknown-values globs from the middle of the stack.
4443 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4444 easier to resume long computations after using *BREAK-ON-SIGNALS*
4445 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4446 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4447 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4448 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4449 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4450 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4452 * fixed a (fairly theoretical) bug in string printing: if
4453 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4454 does not have array-element-type equal to the most general string
4456 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4457 function name. (thanks to Nikodemus Siivola)
4458 * fixed bug: compile-time format string checker failed on
4459 non-closed ~{. (reported by Thomas F Burdick)
4460 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4461 don't warn on legal loop code involving more than one aggregate
4462 boolean. (thanks to Nikodemus Siivola)
4463 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4464 in keyword position to MAKE-PACKAGE was not being reported as
4466 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4467 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4469 * fixed bugs 280 and 312: the checking for multiple definitions in a
4470 file is less likely to become confused by uses of inline
4472 * fixed bug: the #S reader macro performs the keyword coercion
4473 specified for slot names. (reported by Kalle Niemitalo)
4474 * fixed bug: lambda lists may contain symbols whose names start with
4475 & but are not lambda-list-keywords; their occurrence triggers a
4477 * fixed bug 321: define-method-combination argument lambda lists do
4478 not cause invalid code to be generated when &optional or &aux
4479 variables have default values. (reported by Bruno Haible)
4480 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4481 have CLOS classes; this appears also to have fixed reported
4482 instability in stack exhaustion detection.
4483 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4484 MUFFLE-WARNING when no associated restart is present is now
4486 * optimization: rearranged the expansion of various defining macros
4487 so that each expands into only one top-level form in a
4488 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4490 * optimization: used a previously little-used slot in symbols to
4491 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4493 * fixed some bugs revealed by Paul Dietz' test suite:
4494 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4496 ** Fixed an optimization bug related to inheritance of initforms
4497 from local to shared slots.
4498 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4499 ** CAST optimizer forgot to flush argument derived type.
4500 ** print/read consistency on floats is now orders of magnitude
4501 more likely. (thanks also to Bruno Haible for a similar report
4503 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4504 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4505 for objects of type REAL. Make it so.
4506 ** SXHASH is specified (infelicitously) to respect similarity,
4507 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4508 it so. (thanks to Markus Ziegler)
4509 ** on the Alpha, the compiler succeeds in compiling functions
4510 returning a known number of arguments greater than 63.
4511 ** fixed handling of invalid NIL arguments in keyword position
4513 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4515 ** provided a readably-printable representation for RANDOM-STATE
4517 ** ensured that pathnames, where they have a namestring, always
4518 print using #P"..." syntax.
4520 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4521 * Support for the forthcoming 2.0 version of the NetBSD kernel
4522 running on x86 hardware has been added. (thanks to Perry
4523 E. Metzger most immediately, and others for their past work)
4524 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4525 current release version; SBCL's OpenBSD support had been broken
4526 since about the time of OpenBSD's switch to ELF binary format.)
4527 * [placeholder for DX summary]
4528 ** user code with &REST lists declared dynamic-extent, under high
4529 speed or space and low safety and debug optimization policy.
4530 * The manual has been converted to Texinfo format and the debugger
4531 chapter from the cmucl manual has been added.
4532 * A facility has been added to extract documentation strings from
4533 sbcl and store them as Texinfo-formatted snippets for inclusion in
4534 the manual (via Texinfo's @include directive)
4535 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4536 the test case to Dave Roberts)
4537 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4538 pointers. (reported by Sean Ross)
4539 * bug fix: PROFILE output is printed nicely even for large numerical
4540 values. (thanks to Zach Beane)
4541 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4542 greater than 32 handle EOF correctly.
4543 * bug fix: on X86 an immediate argument of the IMUL instruction is
4544 correctly printed in disassembly. (thanks to Lutz Euler)
4545 * bug fix: class slots in redefined classes preserve their old
4546 values. (thanks to Bruno Haible and Nikodemus Siivola)
4547 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4548 succeeds. (reported by Marco Baringer)
4549 * fixed some bugs revealed by Paul Dietz' test suite:
4550 ** READ-SEQUENCE now works on ECHO-STREAMs.
4551 ** RATIONALIZE works more according to its specification. (thanks
4554 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4555 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4556 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4557 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4558 should matter to you only if you rebind the printer control
4559 variables and then find you want different bindings in the
4560 debugger than in the ordinary execution of your program.)
4561 * The runtime build system has been tweaked to support building
4562 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4563 assembler and linker. (thanks to Nikodemus Siivola)
4564 * Unbound, undefined, undeclared variables now trigger full
4565 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4566 more often programmer error than deliberate exploitation of undefined
4568 * optimization: the hash algorithm for strings has changed to one
4569 that is less vulnerable to spurious collisions. (thanks to Juho
4571 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4572 needless bounds checking. (thanks to Juho Snellman)
4573 * optimization: implemented multiplication as a modular
4574 (UNSIGNED-BYTE 32) operation on the PPC backend.
4575 * fixed some bugs revealed by Paul Dietz' test suite:
4576 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4578 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4579 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4580 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4582 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4584 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4586 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4587 their output stream on EOF from read.
4588 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4589 have been read to end-of-file.
4590 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4592 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4593 description of determination of which consecutive characters
4595 ** Printing the "Space" character with escaping on now yields "#\\ ",
4596 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4597 ** Reading floating-point numbers with *READ-BASE* set to a number
4598 less than 10 works correctly.
4599 ** Reading floating-point numbers with *READ-BASE* set to a number
4600 more than 10 works correctly.
4601 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4602 the readtable currently in effect.
4604 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4605 * minor incompatible change: parsing of namestrings on a physical
4606 (Unix) host has changed; numbers after the final #\. in a
4607 namestring are no longer interpreted as a version field. This is
4608 intented to be largely invisible to the user, except that the
4609 meaning of the namestring "*.*.*" has changed: it now refers to a
4610 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4611 should usually be replaced by
4612 (make-pathname :name :wild :type :wild :version :wild)
4613 with the added benefit that this is more likely to be portable.
4614 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4615 option to OPEN now signals an error if the file being opened
4616 exists; this may have an impact on existing code.
4617 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4618 signals received, on the PowerPC platforms (both Linux and
4619 Darwin). (thanks to Pierre Mai for pointing out the location of
4621 * several fixes on OS X: The system now builds and runs cleanly on
4622 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4623 (thanks to Brian Mastenbrook)
4624 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4625 second-resolution: integer multiples of 1/3600 between -24 and 24.
4626 (thanks to Vincent Arkesteijn)
4627 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4628 type when called with 1 argument; PEEK-CHAR checked type of
4629 PEEK-TYPE only after having read first character from a
4630 stream. (reported by Peter Graves)
4631 * bug fix: the garbage collector now has much better locality
4632 behaviour, and in particular no longer treats all memory as being
4633 exhausted when many small objects point to each other in a deeply
4635 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4636 recognized as being TYPEP their class.
4637 * bug fix: the PUSHNEW documentation string has been corrected.
4638 (thanks to Vincent Arkesteijn)
4639 * bug fix: defaulting of the value for the last of an atypically
4640 large number of multiple values being bound was not being
4641 performed correctly on the Alpha or PPC platforms
4642 * optimization: implemented multiplication as a modular
4643 (UNSIGNED-BYTE 32) operation on the x86 backend.
4644 * optimization: SEARCH on simple-base-strings can now be open-coded.
4645 (see also contrib/compiler-extras.lisp for inspiration for
4646 teaching the compiler about the Boyer-Moore algorithm).
4647 * value, returned by MAX (and MIN) called with several EQUALP, but
4648 not EQL, arguments now does not depend on compiler settings.
4649 * fixed some bugs revealed by Paul Dietz' test suite:
4650 ** in stack analysis liveness information is propagated from
4651 non-local entry points.
4652 ** pathwise CAST removing failed when the CAST node did not start
4654 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4655 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4657 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4658 host is already defined.
4659 ** RENAME-FILE works on streams instead of signalling an internal
4661 ** PEEK-CHAR uses the current readtable when determining whether
4662 or not a character is whitespace.
4663 ** MERGE-PATHNAMES handles the case when the pathname does not
4664 specify a name while the default-pathname specifies a version.
4665 ** Pathnames now stand a better chance of respecting print/read
4667 ** Attempting to use standardized file system operators with a
4668 pathname with invalid :DIRECTORY components signals a
4670 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4672 ** DIRECTORY on logical pathnames is more correct.
4673 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4674 signal a TYPE-ERROR if their argument is not a stream.
4675 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4676 designator argument does not designate a stream.
4677 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4678 examining the synonym.
4679 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4681 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4682 element-type larger than ([UN]SIGNED-BYTE 32).
4684 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4685 * When built with the :SB-FUTEX feature, threaded builds now take
4686 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4687 for faster/more reliable mutex and condition variable support.
4688 * Incompatible change (but one you probably shouldn't have been using
4689 anyway): the interface and code for arbitrating between multiple
4690 threads in the same user session has been redesigned.
4691 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4692 error when called without an explicit environment argument.
4693 (thanks to Nikodemus Siivola)
4694 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4695 confused about their position. (thanks to Adam Warner and Gerd
4697 * bug fix: Pretty printing backquoted forms with unquotations in the
4698 argument list position of various code constructs such as LAMBDA
4699 now works correctly. (reported by Paul Dietz)
4700 * bug fix: Pretty printing unquotations no longer loses all
4701 stream position information.
4702 * optimization: performance of string output streams is now less
4703 poor for multiple small sequence writes.
4704 * optimization: performance of CSUBTYPEP in the presence of complex
4705 expressions involving CONS and NOT many times has been improved.
4706 (reported by Paul Dietz)
4707 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4709 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4710 streams for the REPL, for the debugger, and so on. (thanks to
4712 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4713 * fixed some bugs revealed by Paul Dietz' test suite:
4714 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4715 is ignored if it is too small, rather than propagating through
4716 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4717 ** extremely complex negations of CONS types were not being
4718 sufficiently canonicalized, leading to inconsistencies in
4720 ** VALUES tranformer lost derived type.
4722 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4723 * fixed a bootstrapping bug: the build process no longer assumes
4724 that the various BOOLE-related constants have the same value in
4725 host and target lisps. (noted by Paul Dietz' test suite on an
4726 SBCL binary built from CLISP)
4727 * The system can now be dynamically linked on the MIPS platform,
4728 which enables dynamic loading of foreign code from Lisp. (thanks
4729 to Ralf Baechle for discussions on the MIPS ABI)
4730 * The system now records debugging information for its own source
4731 files in a filesystem-position-independent manner, relative to
4732 the "SYS" logical host.
4733 * fixed a compiler bug: MV-LET convertion did not check references
4734 to the "max args" entry point. (reported by Brian Downing)
4735 * tweaked disassembly notes to be less confident about proclaiming
4736 some instruction as an LRA. (thanks to Brian Downing)
4737 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4738 now each have their own history, command character, and other
4739 characteristics. (thanks to David Lichteblau)
4740 * fixed some bugs revealed by Paul Dietz' test suite:
4741 ** compiler failure in compiling LOGAND expressions including a
4743 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4744 shift greater than 32.
4745 ** FLUSH-DEST did not mark blocks for type check regeneration.
4746 ** HANDLER-CASE failed to accept declarations in handler clauses
4747 in some circumstances.
4749 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4750 * New code in contrib/sb-introspect (still probably not entirely
4751 stable yet) provides some support for smart Lisp development
4752 environments like SLIME.
4753 * The conditions signalled for errors occurring when loading .fasl
4754 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4755 in a way which should help ASDF recover gracefully.
4756 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4757 stuff has been cleaned up. If you code contrib/ stuff, this might
4758 affect you, and you can look at contrib/README, contrib/STANDARDS,
4759 and/or the 0.8.4.27 diff to check.
4760 * In full calls the compiler now does not generate checks for declared
4761 argument types for all arguments.
4762 * various threading fixes
4763 ** and some experimental patches which didn't make it into
4764 the main tree for this release, but which are shipped in
4765 contrib/experimental-thread.patch as a possible fix for some
4766 failures (deadlock, spinning...) in GC-intensive multithreaded
4768 * fixed PPC build problem (source code incompatibility of different
4769 library versions): added offsetof() hackery which attempts to divine
4770 where glibc maintainers put uc_mcontext today
4771 * fixed bug 282: compiler does not trust type assertions while passing
4772 arguments to a full call.
4773 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4774 &OPTIONAL VALUES type parameter.
4775 * fix bug 214: algorithm for noting rejected templates is now more
4776 similar to that of template seletion. (also reported by rydis on
4778 * fixed bug 141b: printing backquoted information readably and prettily
4779 inserts a space where necessary.
4780 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4781 (CHARACTER 10) are now reported as errors, rather than propagated
4782 as unknown types. (reported by piso on #lisp)
4783 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4784 with values NIL and :ERROR. (thanks to Milan Zamazal)
4785 * fixed bug 191c: CLOS now does proper keyword argument checking as
4786 described in CLHS 7.6.5 and 7.6.5.1.
4787 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4788 longer raise an error; further, using a list as a for-as-arithmetic
4789 counter now raises a meaningful error.
4790 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4791 now understood by sequence creation functions such as MAKE-SEQUENCE
4793 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4794 a STRING-INPUT-STREAM.
4795 * compiler enhancement: SIGNUM is now better able to derive the type
4797 * type declarations inside WITH-SLOTS are checked. (reported by
4799 * fixed some bugs revealed by Paul Dietz' test suite:
4800 ** incorrect optimization of TRUNCATE for a positive first
4801 argument and negative second.
4802 ** compiler failure in let-convertion during flushing dead code.
4803 ** compiler failure while deriving type of TRUNCATE on an
4804 interval, containing 0.
4805 ** ASH of a negative bignum by a negative bignum count now returns
4807 ** intersection of CONS types now canonicalizes properly, fixing
4808 inconsistencies in SUBTYPEP.
4810 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4811 * incompatible change: The --disable-debugger command line
4812 option now clobbers the debugger at a more fundamental
4813 level, by redefining #'INVOKE-DEBUGGER instead of by
4814 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4815 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4816 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4817 enter the debugger REPL and then suffer recursive errors
4818 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4819 while under the new system, BREAK in --disable-debugger mode
4820 terminates the system just as an unhandled error would.
4821 * fixed compiler performance when processing loops with a step >1;
4822 * bug fix: DOCUMENTATION now retrieves generic function
4823 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4824 support has been systematized, and now supports the methods
4825 specified by ANSI, along with a default method and a method for
4826 slot documentation. (reported by Nathan Froyd)
4827 * bug fix: effective methods associated with a generic function are
4828 no longer cached over a change of that generic function's method
4829 combination. (reported by Andreas Fuchs)
4830 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4831 names a non-existent directory. (thanks to Andreas Fuchs)
4832 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4833 the PPC platform, lead to stack corruption; this has been fixed.
4834 (reported by Rainer Joswig)
4835 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4836 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4837 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4838 arithmetic in general, is now much more reliable on the PPC
4840 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4841 platform now returns the right answer.
4842 * optimization: restored some effective method precomputation in
4843 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4844 precomputation is now tunable.
4845 * optimization: compiler-internal data structure use has been
4846 reviewed, and changes have been made that should improve the
4847 performance of the compiler by about 20%.
4848 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4849 simple-base-strings and simple-bit-vectors is improved.
4850 * optimization: the optimization of 32-bit logical and arithmetic
4851 functions introduced in version 0.8.3 on the x86 has been
4852 implemented on the mips, ppc and sparc platforms; an
4853 implementation of the same facility, but for 64-bit arithmetic,
4854 has been added for the alpha.
4855 * microoptimization: the compiler is better able to make use of the
4856 x86 LEA instruction for multiplication by constants.
4857 * bug fix: in some situations compiler did not report usage of
4858 generic arithmetic in (SPEED 3) policy.
4859 * bug 145b fix: compiler used wrong type specifier while converting
4860 MEMBER-types to numeric.
4861 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4863 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4864 index argument now works properly on the Alpha platform.
4865 * bug fix: floating point exception treatment on the Alpha platform
4867 * bug fix: FILE-POSITION works much better on string input and
4868 output streams. (thanks to Nikodemus Siivola)
4869 * bug fix: many threading/garbage collection symptoms sorted.
4870 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4871 might be pseudo-atomic.
4872 * internal change: Stopping for GC is now done with signals not
4873 ptrace. GC is now done in whichever thread wanted it, instead of
4875 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4877 * bug fix: result form in DO is not contained in the implicit
4879 * incompatible change: ICR structure is changed; the value part of
4880 CONTINUATION is now called LVAR; corresponding functions are
4881 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4882 * added type deriver for ISQRT (thanks to Robert E. Brown).
4883 * bug fix: better support for loading from the command line when an
4884 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4886 * fixed some bugs revealed by Paul Dietz' test suite:
4887 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4888 ** ROUND and FROUND now give the right answer when given very
4889 small float arguments.
4890 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4892 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4893 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4894 ** LCM should return a non-negative integer.
4895 ** PARSE-INTEGER returned the index of a terminator instead of the
4896 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4897 ** PARSE-INTEGER returned an incorrect index being applied to a
4899 ** LCM with two arguments of 0 returns 0 rather than signalling
4901 ** unsigned addition of a 32-bit constant with the high bit set no
4902 longer causes an internal compiler error on the x86.
4903 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4904 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4905 with negative last argument.
4906 ** byte specifiers with zero size and position no longer cause
4907 an error during type derivation.
4908 ** bignum multiplication on the Alpha platform now returns the
4910 * porting: The system now builds on SuSE AMD64, although it still
4911 generates a 32-bit binary.
4912 * .fasl file incompatibility: The fasl file version number has
4913 been incremented (because of the changes to internal compiler
4914 data structures referred to above).
4916 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4917 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4918 more accurately, on the Darwin kernel running on PowerPC hardware.
4919 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4920 * Compiler code deletion notes now signal a condition of type
4921 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4922 an associated MUFFLE-WARNING restart.
4923 * The compiler now performs limited argument count validation of
4924 constant format strings in FORMAT, and where appropriate in ERROR,
4925 CERROR and WARN. (thanks to Gerd Moellmann)
4926 * New ASDF-INSTALL contrib can be used for automatic download and
4927 installation of third-party Lisp code from CCLAN or other sites
4929 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4930 which forces another thread to execute a function supplied by the
4932 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4933 now accept and act upon their :ELEMENT-TYPE keyword argument.
4934 (reported by Martin Atzmueller, Edi Weitz)
4935 * bug fix: FILE-POSITION now accepts position designators up to
4936 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4937 is the greater. (thanks to Patrik Nordebo)
4938 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4939 Kalle Olavi Niemitalo)
4940 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4941 printable. (reported by Eric Marsden)
4942 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4943 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4944 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4945 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4946 (thanks to Stig Sandoe)
4947 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4948 UNREAD-CHAR now correctly includes the unread character in the
4949 target sequence. (thanks to Gerd Moellmann)
4950 * bug fix in threaded builds: the system can now be suspended and
4951 resumed by shell job control with minimal disruption.
4952 * bug fixes in times and timezones >2038AD
4953 * better handling of "where is GNU make?" problem in build scripts
4954 (thanks to Nikodemus Siivola)
4955 * new optimization: inside a named function any reference to a
4956 function with the same name is considered to be a self-reference;
4957 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4958 optimization quality.
4959 * new optimization on x86: logical functions and + now have
4960 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4961 used when the result is truncated to 32 bits.
4962 * VALUES declaration is partially enabled.
4963 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4964 * fixed some bugs revealed by Paul Dietz' test suite:
4965 ** The system now obeys the constraint imposed by
4966 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4967 types form a lattice under type intersection.
4968 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4969 ** ASSOC now ignores NIL elements in an alist.
4970 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4971 and (1+ MOST-POSITIVE-FIXNUM) answers.
4972 ** The addition of a method with invalid qualifiers to a generic
4973 function does not cause an error to be signalled immediately;
4974 a warning is signalled, and the error is generated only on
4975 calling the generic function.
4976 * changed .fasl file version number, in part to add type codes for
4977 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4978 obscure ANSI requirements
4980 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4981 * fixed bug 148: failure to inline-expand a local function left
4982 garbage, confusing the compiler.
4983 * fixed bugs 3cd: structure slot readers perform type check if the
4984 slot can have an invalid value (i.e. it is either not initialized
4985 or can be written with a less specific slot writer).
4986 * bug fix: the compiler now traps array references to elements off
4987 the end of an array; previously, the bounds checking in some
4988 circumstances could go off-by-one.
4989 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4991 * type declarations for array element types now obey the description
4992 on the CLHS page "Declaration TYPE", as per discussions on
4993 sbcl-help around 2003-05-08. This means that a declaration
4994 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4995 declaration, all references to BAR will be asserted or assumed
4996 (with THE, so dependent on compiler policy) to involve objects of
4997 type FOO. Note that no such declaration is implied in
4998 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4999 * declared types of functions from the "Conditions"
5000 chapter. (reported by Paul Dietz)
5001 * bug fix: CERROR accepts a function as its first argument.
5002 * bug fix: NTH an NTHCDR accept a bignum as index
5003 arguments. (reported by Adam Warner)
5004 * optimization: character compare routines now optimize comparing
5005 against a constant character. (reported by Gilbert Baumann)
5006 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
5007 argument now works properly on the MIPS platform.
5008 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
5009 * repeated evaluation of the same DEFSTRUCT, a slot of which is
5010 declared to have a functional type, does not cause an error
5012 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
5013 many :DEFAULT-INITARGS. (reported by Istvan Marko)
5014 * fixed bug: if last continuation of a deleted block has a
5015 destination, this destination should be deleted too. (reported by
5017 * fixed a bug in the bootstrap process: the host compiler's values
5018 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
5019 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
5020 test case from Patrik Nordebo)
5021 * improved the ability of the disassembler on the PPC platform to
5022 provide helpful disassembly notes.
5023 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
5024 the class in more cases than previously.
5025 * bug fix: FILE-POSITION now understands :START and :END for
5026 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
5027 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
5028 8) data. (thanks to David Lichteblau)
5029 * bug fix: it is possible to add a method to a generic function
5030 without lambda list.
5031 * bug fix: reader failed to signal END-OF-FILE inside an
5032 object representation. (reported by Nikodemus Siivola)
5033 * fixed some bugs revealed by Paul Dietz' test suite:
5034 ** LAST and [N]BUTLAST should accept a bignum.
5035 ** condition slot accessors are methods.
5036 ** (VECTOR NIL) is a subtype of STRING.
5038 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
5039 * minor incompatible change: some nonsensical specialized lambda
5040 lists (used in DEFMETHOD) which were previously ignored now signal
5042 * minor incompatible change: the system is now aware of the types of
5043 variables in the COMMON-LISP package, and will signal errors for
5044 most violations of these type constraints (where previously they
5045 were silently accepted).
5046 * minor incompatible change: COMPILE-FILE now uses the freedom
5047 afforded (ANSI 3.2.2.3) to use derived function types for
5048 functions defined in the same file. This also permits the system
5049 to warn on static type mismatches and function
5050 redefinition. (Currently it does not work with high DEBUG level.)
5051 * minor incompatible change: VALUES declaration is disabled.
5052 * When issuing notes, the compiler now signals a condition of type
5053 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
5054 restart for use in user handlers. It is expected that the
5055 COMPILER-NOTE condition will eventually become a condition
5056 supertype to a hierarchy of note types, which will then be
5057 handleable in a similar fashion. However, at the moment, no such
5058 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
5059 but it's an implementation detail, not a classification for the
5061 * Changes in type checking closed the following bugs:
5062 ** type checking of unused values (192b, 194d, 203);
5063 ** template selection based on unsafe type assertions (192c, 236);
5064 ** type checking in branches (194bc).
5065 * A short form of VALUES type specifier has ANSI meaning (it has
5066 increased the number of situations when SBCL cannot perform type
5068 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5069 keywords or constants is permissible.
5070 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5071 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5072 classes. (thanks to Antonio Martinez)
5073 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5074 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5075 argument to a pretty-print stream. Instead, it leaves any such
5076 operations to DESCRIBE-OBJECT methods.
5077 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5079 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5080 lambda lists. (thanks to David Lichteblau)
5081 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5082 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5083 (thanks to Gerd Moellmann)
5084 * fixed bug 246: increased compilation speed of long
5085 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5087 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5089 * DEFCONSTANT now throws a condition of type
5090 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5091 constant to a non-EQL value; CONTINUE and ABORT restarts
5092 respectively change and preserve the value.
5093 * fixed bug 63: The code walker, part of the implementation of CLOS,
5094 is now better at handling symbol macros.
5095 * bug fix: There is no longer an internal implementation type named
5096 CL:LENGTH. (reported by Raymond Toy)
5097 * bug fix: In macro-like defining macros/special operators the
5098 implicit block does not enclose the lambda list.
5099 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5100 enclosed in parentheses) are not suitable as type specifiers, and
5101 their use properly signals an error now.
5102 * bug fix: An argument count mismatch for a type specifier in code
5103 being compiled no longer causes an unhandled error at compile
5104 time, but signals a compile-time warning.
5105 * fixed simple vector readable printing
5106 * bug fix: DESCRIBE takes more care over whether the class
5107 precedence list slot of a class is bound before accessing it.
5108 (reported by Markus Krummenacker)
5109 * bug fix: FORMATTER can successfully compile pretty-printer format
5110 strings which use variants of the ~* directive inside.
5111 * bug fix: SEARCH now applies its TEST predicate to the elements of
5112 the arguments in the correct order. (thanks to Wolfhard Buss)
5113 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5114 in type inference. (thanks to Robert E. Brown)
5115 * bug fix: Reading in symbols with an explicit package name of ""
5116 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5117 * fixed some bugs revealed by Paul Dietz' test suite:
5118 ** NIL is now allowed as a structure slot name.
5119 ** Arbitrary numbers, not just REALs, are allowed in certain
5120 circumstances in LOOP for-as-arithmetic clauses.
5121 ** Multiple class redefinitions before slot access no longer
5122 causes a type error.
5123 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5124 association between the name and a class.
5125 ** Generic functions with non-standard method-combination and over
5126 five methods all of which return constants no longer return NIL
5127 after the first few invocations. (thanks to Gerd Moellmann)
5128 ** CALL-NEXT-METHOD with no arguments now passes the original
5129 values of the arguments, even in the presence of assignment.
5130 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5132 ** DISASSEMBLE works with closures and funcallable instances.
5133 ** ADD-METHOD now returns the generic function, not the new method.
5134 ** FIND-METHOD signals an error if the lengths of the specializers
5135 is incompatible with the generic function, even if the ERRORP
5137 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5138 which its argument is a member.
5139 ** DEFCLASS only redefines the class named by its class-name
5140 argument if that name is the proper name of the class;
5141 otherwise, it creates a new class.
5142 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5143 of the UNBOUND-SLOT condition to the name of the slot.
5144 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5145 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5146 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5147 SLOT-MAKUNBOUND in the specified fashion.
5149 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5150 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5151 cross-compilation host. As a consequence, we can now bootstrap our
5152 way up to SBCL starting with a bare gcc toolchain and human-readable
5153 source code (first the source to CLISP, then the source to SBCL).
5154 * A contributed module containing a partial implementation of the
5155 simple-streams interface has been included. (thanks to Rudi
5157 * A contributed module implementing the RFC1321 Message Digest
5158 Algorithm, known as MD5, has been included.
5159 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5160 no longer has any effect, as the code controlled by this feature
5161 has been deleted. (As far as we know, no-one has ever built using
5162 this feature, and its semantics were confused in any case).
5163 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5164 work on conditions (as required by the ANSI specification),
5165 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5166 expected behaviour on conditions. Users should note, however,
5167 that such behaviour is not required by the ANSI specification,
5168 and so use of this behaviour may render their code unportable.
5169 * fixed some bugs revealed by Paul Dietz' test suite:
5170 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5172 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5173 ** SXHASH on condition objects no longer returns NIL.
5174 ** :ALLOCATION :CLASS slots are better treated; their values are
5175 updated on class redefinition, and initforms inherited from
5176 superclasses are applied.
5177 ** REMOVE-METHOD returns its generic function argument even when
5178 no method was removed.
5179 ** SHARED-INITIALIZE now initializes the values of the requested
5180 slots, including those with :ALLOCATION :CLASS.
5181 ** ALLOCATE-INSTANCE now works on structure classes defined via
5182 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5184 ** SLOT-EXISTS-P now works on conditions, as well as structures
5186 ** MAKE-LOAD-FORM now has the required methods on
5187 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5188 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5189 keyword, and now implements the SLOT-NAMES argument.
5190 ** methods with &OPTIONAL arguments no longer allow too many
5191 arguments to be passed in the call without error.
5192 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5193 option is consistent with the required arguments of the generic
5194 function lambda list.
5195 * bug fix: REQUIRE accepts a string designator. (Thanks to
5197 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5198 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5199 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5200 * bug fix: The compiler now checks for duplicated variables in macro
5202 * bug fix: SETQ on globals returns the correct value.
5203 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5204 not a COMPILER-ERROR (followed by some other strange error on
5205 choosing the CONTINUE restart).
5206 * bug fix: make.sh and friends are now more consistent in the way that
5207 they look for GNU "make".
5209 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5210 * experimental native threads support (on x86 Linux >=2.4 only).
5211 This is not compiled in by default: you need to add :SB-THREAD to
5212 the target features. See the "Beyond ANSI" chapter of the manual
5214 * fix for longstanding nonANSIism: The old distinction between
5215 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5216 The return value from CL:FIND-CLASS is now a CLOS class, and
5217 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5218 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5219 * An interface to the MetaObject Protocol, as described in Kiczales,
5220 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5221 MIT Press, 1991, is available from the SB-MOP package.
5222 * incompatible change: the SB-PCL package should now be considered
5223 a private implementation detail, and no longer a semi-private MOP
5225 * minor incompatible change: due to rearrangement for threads, the
5226 control stack and binding stack are now allocated at arbitrary
5227 addresses instead of being hardcoded per-port. Users affected by
5228 this probably have to be doing advanced things with shared
5229 libraries, and will know who they are.
5230 * minor incompatible change: Previously, all --eval forms used were
5231 processed with READ before any of them were processed with EVAL.
5232 Now each --eval form is processed with both READ and EVAL before
5233 the next --eval form is processed. (Thus package operations like
5234 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5235 work as the user might reasonably expect.)
5236 * minor incompatible change: *STANDARD-INPUT* is now only an
5237 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5239 * minor incompatible change: Y-OR-N-P is now character-oriented,
5240 not line oriented. Also, YES-OR-NO-P now works without errors.
5241 (thanks to Antonio Martinez)
5242 * sb-aclrepl module improvements: an integrated inspector, added
5243 repl features, and a bug fix to :trace command.
5244 * Known functions, which cannot be open coded by the backend, are
5245 considered to be able to check types of their arguments. (fixing
5246 a bug report by Nathan J. Froyd)
5247 * fixed a bug in computing method discriminating functions: It is
5248 now possible to define methods specialized on classes which have
5249 forward-referenced superclasses. (thanks to Gerd Moellmann)
5250 * fixed evaluation order in optional entries (reported by Gilbert
5252 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5253 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5254 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5255 required-by-AMOP NAME argument, as well as CLASS and
5256 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5257 * fixed bug 20: DEFMETHOD can define methods using names that are
5258 not the proper names of classes to designate class specializers.
5259 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5260 Unix file descriptors, instead of blowing up. (thanks to Antonio
5262 * Garbage collection refactoring: user-visible change is that a
5263 call to the GC function during WITHOUT-GCING will not do garbage
5264 collection until the end of the WITHOUT-GCING. If you were doing
5265 this you were probably losing anyway.
5266 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5267 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5268 TYPEP the latter but not the former.
5269 * The compiler issues a full WARNING for calls to undefined functions
5270 with names from the CL package.
5271 * MAP-INTO for a vector destination is open coded. (reported by
5272 Brian Downing on c.l.l)
5273 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5274 documentation string.
5275 * fixed some bugs revealed by Paul Dietz' test suite:
5276 ** COPY-ALIST now signals an error if its argument is a dotted
5278 ** Condition slots are now accessed more correctly in the presence
5279 of multiple initargs for a given slot.
5280 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5281 exclude restarts of the same name associated with a different
5283 ** DEFCLASS of forward-referenced classes with another
5284 forward-referenced class in the superclasses list no longer
5286 ** Condition slots are now initialized once each, not multiple
5287 times. (thanks to Gerd Moellmann)
5288 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5290 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5291 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5292 arguments contain duplicated elements.
5293 ** RESTART-CASE understands local macros.
5294 ** RESTART-CASE associates exactly its own restarts with a condition.
5295 ** ENDP in safe mode checks its argument to be of type LIST.
5296 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5297 in question is unbound.
5298 ** Optimized MAKE-INSTANCE functions no longer cause internal
5299 assertion failures in the presence of duplicate initargs.
5300 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5301 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5302 propagated even in the ctor optimized implementation of
5304 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5306 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5307 * a better implementation of SXHASH on (simple) bit vectors,
5308 measured both in execution speed and in distribution of results
5309 over the positive fixnums, has been installed. Likewise, a better
5310 implementation of EQUAL for simple bit vectors is now available.
5311 * fixed CEILING optimization for a divisor of form 2^k.
5312 * fixed bug 240 (emitting extra style warnings "using the lexical
5313 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5314 by Antonio Martinez)
5315 * fixed SXHASH, giving different results for NIL depending on type
5316 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
5317 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
5318 variable. (found by Rolf Wester)
5319 * SBCL does not ignore type declarations for special
5320 variables. (reported by rif on c.l.l 2003-03-05)
5321 * some bug fixes in contrib/sb-aclrepl/
5322 * fixed some bugs revealed by Paul Dietz' test suite:
5323 ** a bug in the CONS type specifier, whereby the CAR and CDR
5324 types got intertwined, has been fixed;
5325 ** the type system is now able to reason about the interaction
5326 between INTEGER and RATIO types more completely;
5327 ** APPEND, [N]REVERSE and NRECONC check that those their
5328 arguments, which must be proper lists, are really so;
5329 ** An array specialized to be unable to hold elements has been
5330 implemented, as required -- yes, really -- by ANSI;
5331 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5332 on malformed property lists;
5334 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5335 * incompatible packaging change: in line with Unix convention,
5336 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5337 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5338 * REQUIRE and PROVIDE are now optionally capable of doing something
5339 useful. See the documentation string for REQUIRE.
5340 * infrastructure for a managed SBCL contrib system: contributed
5341 modules in this release include:
5342 ** the ASDF system definition facility;
5343 ** an interface to the BSD Sockets API;
5344 ** an ACL-like convenience interface to the repl;
5345 (thanks to Kevin Rosenberg)
5346 ** an implementation of ROTATE-BYTE, with efficient implementation
5348 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5349 gives a closer approximation to the right answer than previously.
5350 (thanks to Raymond Toy)
5351 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5352 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5353 optional environment arguments, as required by ANSI.
5354 * fixed bugs in other functions taking environment objects, allowing
5355 calls with an explicit NIL environment argument to be compiled
5357 * fixed bug 228: primary return values from
5358 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5359 COMPILE or FUNCTION.
5360 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5361 :TYPE will no longer signal errors on innocuous objects.
5362 * fixed bug 231b: SETQ is better at respecting type declarations in
5363 the lexical environment.
5364 * fixed a bug in DEFCLASS: classes named by symbols with no or
5365 unprintable packages can now be defined.
5366 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5367 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5368 * fixed compiler failure related to checking types of functions.
5369 (reported by Robert E. Brown)
5370 * the compiler is now much more consistent in its error-checking
5371 treatment of bounding index arguments to sequence functions: in
5372 (SAFETY 3) code, errors will be signalled in almost all cases if
5373 invalid sequence bounding indices are passed to functions defined
5374 by ANSI to operate on sequences.
5375 * fixed a bug in the build procedure: documentation of SBCL-specific
5376 packages is now preserved and available in the final Lisp image.
5377 * lifted FDEFINITION lookup out of loops in the implementation of
5378 many list operations. (thanks to Robert E. Brown)
5379 * fixed a bug in the reader: the #n# reader macro now works for
5380 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5381 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5382 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5383 E. Brown and Tony Martinez respectively)
5384 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5385 SLOT-BOUNDP: in particular, it is now able to optimize them much
5386 better, and is now not vulnerable to having packages renamed.
5387 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5388 always called when a slot is not present in an instance. (thanks
5390 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5391 longer signal an error on unreading a character following EOF on
5392 the previous constituent stream. (thanks to Tony Martinez)
5393 * fixed some bugs revealed by Paul Dietz' test suite:
5394 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5395 not just nonnegative fixnums;
5396 ** the logical bit-array operators such as BIT-AND now accept an
5397 explicit NIL for their "opt-arg" argument (to indicate a
5398 freshly-consed result bit-array);
5399 ** ELT now signals an error on an invalid sequence index in safe
5401 ** the type system is now cleverer about negations of numeric
5402 types, and consequently understands the BIGNUM and RATIO types
5404 ** the type system is now cleverer about the interaction between
5405 INTEGER and RATIO types: while bugs still remain, many more
5406 cases are accurately computed;
5407 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5408 if it is in the last clause;
5409 ** CONSTANTLY now correctly returns a side-effect-free function in
5411 ** DECLARE is no longer treated as a special-operator; in
5412 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5413 * incremented fasl file version number due to the change in the
5414 DEFSTRUCT-SLOT-DESCRIPTION structure.
5416 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5417 * minor incompatible change: code processed by the "interpreter" or
5418 EVAL now has a compilation optimization policy of (DEBUG 2)
5419 (changed from (DEBUG 1)) to improve debuggability of interactive
5420 development, and to allow the use of the debug RETURN command in
5422 * an experimental implementation of the RETURN command for the
5423 debugger has been included. (thanks to Frederik Kuivinen)
5424 * fixed bug 62: constraints were not propagated into a loop.
5425 * fixed bug in embedded calls of SORT (reported and investigated by
5427 * fixed some bugs revealed by Paul Dietz' test suite:
5428 ** printing and reading of arrays with some dimensions having
5429 length 0 (thanks to Gerd Moellmann);
5430 ** BOA constructor with &AUX argument without a default value does
5431 not cause a type error;
5432 ** CONSTANTP now returns true for all self-evaluating objects.
5434 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5435 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5436 accessors that are related by inheritance, as specified in the
5437 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5438 Valtteri Vuorikoski)
5439 * The compiler is now able to inline functions that were defined in
5440 a complex lexical environment (e.g. inside a MACROLET).
5441 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5443 * Support for the upcoming FreeBSD-5.0 release has been included.
5444 (thanks to Dag-Erling Smorgrav)
5445 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5446 effect when it is not in a toplevel context.
5447 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5448 stand a better chance of being correct. (thanks to Gerd
5450 * fixed bug in COERCE, which now signals an error on coercing a
5451 rational to a bounded real type which excludes the expected
5453 * The compiler is now able to derive types more accurately from the
5454 COERCE and COMPILE functions.
5455 * fixed bug 223: functional binding is considered to be constant
5456 only for symbols in the CL package.
5457 * fixed bug 231: SETQ did not check the type of a variable being set
5458 (reported by Robert E. Brown)
5459 * A new optimization for MAKE-INSTANCE has been included, fixing
5460 various bugs (including relating to :ALLOCATION :CLASS slots and
5461 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5463 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5464 ** As required by ANSI, LOOP now disallows anonymous collection
5465 clauses such as COLLECT I in conjunction with aggregate boolean
5466 clauses such as THEREIS (= I 1);
5467 ** LOOP now signals an error when any variable is reused in the
5468 same loop (including the potentially useful construct analogous
5469 to WITH A = 1 WITH A = (1+ A);
5470 ** IT is only a special loop symbol within the first clause of a
5471 conditional loop clause;
5472 ** LOOP with a typed iteration variable over a hashtable now
5473 signals a type error iff it should.
5474 * fixed some other bugs revealed by Paul Dietz' test suite:
5475 ** FILE-STREAM now names the class previously known as FD-STREAM;
5476 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5477 argument) no longer signals an error;
5478 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5479 of the slot symbol, rather than using the current package
5480 ((:CONC-NAME "") continues to intern the slot's name in the
5482 * incremented fasl file version number, because of the incompatible
5483 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5484 of the new implementation of DEFINE-COMPILER-MACRO.
5486 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5487 * Support for building SBCL for MIPS platforms running in
5488 little-endian mode has now been checked in, and basic
5489 functionality on said platforms verified.
5490 * minor incompatible change: PCL now records the pathname of a file
5491 in which methods and the like are defined, rather than its
5493 * minor incompatible change: TRUENAME now considers the truename of
5494 a file naming a directory to be the pathname with :DIRECTORY
5495 component indicating that directory.
5496 * minor incompatible change: a NAMED clause in the extended form of
5497 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5498 reason for the previous behaviour is unclear.
5499 * more systematization and improvement of CLOS and MOP conformance
5500 in PCL (thanks to Gerd Moellman and Pierre Mai):
5501 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5503 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5504 primary methods with no specializers;
5505 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5507 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5508 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5509 FORWARD-REFERENCED-CLASSes; error reporting on
5510 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5512 ** SXHASH on CLOS instances now uses a slot internal to the
5513 instance to return different numbers on distinct instances,
5514 while preserving the same return value through invocations of
5516 ** DEFMETHOD signals errors when methods with longer incongruent
5517 lambda lists are added to generic functions;
5518 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5519 CLASS, as specified in AMOP;
5520 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5521 on the order returned by the primary method for classes of
5522 class STANDARD-CLASS;
5523 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5524 * fixed some bugs shown by Paul Dietz' test suite:
5525 ** DOLIST puts its body in TAGBODY;
5526 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5528 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5529 value producing form;
5530 ** if more variables are given to PROGV than values, extra
5531 variables are bound and made to have no value;
5532 ** NSUBSTITUTE on list arguments gets the right answer with
5534 ** ELT signals an error of type TYPE-ERROR when the index argument
5535 is not a valid sequence index;
5536 ** LOOP signals (at macroexpansion time) an error of type
5537 PROGRAM-ERROR when duplicate variable names are found;
5538 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5539 ** FUNCALL of special-operators now cause an error of type
5541 ** PSETQ now works as required in the presence of side-effecting
5542 symbol-macro places;
5543 ** NCONC accepts any object as its last argument;
5544 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5546 ** loop-for-as-package does not require a package to be explicitely
5548 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5550 * fixed bug 166: compiler preserves "there is a way to go"
5551 invariant when deleting code.
5552 * fixed bug 172: macro lambda lists with required arguments after
5553 &REST arguments now cause an error to be signalled. (thanks to
5555 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5556 bug. (thanks to Matthew Danish)
5557 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5559 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5560 arguments are lexically rebound. (thanks to Gerd Moellmann and
5562 * fixed bug 194: error messages are now more informative when there
5563 is no primary method applicable in a call to a generic
5564 function. (thanks to Gerd Moellmann)
5565 * fixed bug in command line argument checking (thanks to Julian
5567 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5568 (thanks to Matthew Danish)
5569 * incremented fasl file version number, because of the
5570 SXHASH-related changes in the layout of CLOS data structures
5572 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5573 * minor incompatible change: The runtime (the Unix executable named
5574 "sbcl") is now much pickier about the .core files it will load.
5575 Essentially it now requires .core files to descend from the same
5576 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5577 as the runtime does. (The intent is to prevent the crashes which
5578 can occur, and which can even be reported as mysterious failures,
5579 when people patch the sources or change the build parameters
5580 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5581 sbcl and .core files.)
5582 * fixed bug: VALUES-LIST is no longer optimized away.
5583 * fixed bug 142: The FFI conversion of C string values to Lisp
5584 string values no longer conses excessively. (thanks to Nathan
5585 Froyd porting Raymond Toy's fix to CMU CL)
5586 * began to systematize and improve MOP conformance in PCL (thanks to
5587 Nathan Froyd, Gerd Moellman and Pierre Mai):
5588 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5590 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5591 ** FINALIZE-INHERITANCE is now called on class finalization;
5592 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5593 argument precedence order.
5594 * fixed bug 202: The compiler no longer fails on functions whose
5595 derived types contradict their declared type.
5596 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5597 so it can be non-toplevel.
5598 * The fasl file version number has changed (because of the new
5599 implementation of DEFMACRO).
5600 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5601 safe code, that any length requirement by their type-specifier
5602 argument is valid. The exceptions to this are described in bug
5604 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5605 functions now check the types of their inputs as required by ANSI.
5606 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5607 introduced symbol is DECLAREd to be SPECIAL.
5608 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5609 * fixed bug: :COUNT argument to sequence functions may be negative
5610 * fixed bug: body of DO-SYMBOLS may contain declarations
5611 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5612 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5613 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5614 symbol macro only once
5615 * fixed printing of call frame when argument list is unavailable
5616 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5617 * compiler no longer signals WARNING on unknown keyword
5620 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5621 * A beta-quality port to the mips architecture running Linux,
5622 based on the old CMUCL backend, has been made. It has been tested
5623 on a big-endian kernel, and works sufficiently well to be able to
5624 rebuild itself; it has not been tested in little-endian mode.
5625 * fixed an inconsistency between gencgc.c and purify.c which made
5626 dumping/loading .core files unreliable
5627 * fixed bug 120a: The compiler now deals correctly with IFs where
5628 the consequent is the same as the alternative, instead of
5629 misderiving the return type. (thanks to Alexey Dejneka)
5630 * fixed bug 113: Logical pathnames are now dumpable (the logical
5631 host is resolved at load-time, throwing an error if it is not
5633 * fixed bug 174: FORMAT's error message is slightly clearer when a
5634 non-printing character is used in a format directive.
5635 * fixed several bugs in compiler checking of type declarations, i.e.
5636 violations of the Python "declarations are assertions" principle
5637 (thanks to Alexey Dejneka)
5638 * fixed several bugs in PCL's error checking (thanks to Gerd
5640 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5642 * fixed bug in compilation of functions as first class values
5643 (thanks to Antonio Martinez-Shotton)
5644 * The compiler's handling TYPE-ERRORs which it can prove will
5645 inevitably happen at runtime has been cleaned up and corrected
5646 in several ways. (thanks to Alexey Dejneka)
5647 * improved argument type checking for various basic arithmetic
5648 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5649 lavished on them in the past that they can be compiled in many
5650 ways in different special cases
5651 * fixed bug 181: compiler checks validity of user supplied type
5653 * cleaned up code flushing in optimization: Function calls which
5654 should signal errors for safety purposes (e.g. which ANSI says
5655 should signal errors when their arguments are of incorrect type)
5656 are no longer optimized away.
5657 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5658 * incremented fasl file version number, because changes in the
5659 implementation of sequence functions like COERCE caused
5660 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5661 in old inline expansions) to become undefined. (Actually these
5662 changes were later undone, so we might very well be binary
5663 compatible with 0.7.7 after all, but leaving the version number
5664 incremented seemed like the simplest and most conservative
5667 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5668 * An alpha-quality port to the parisc architecture running Linux,
5669 based on the old CMUCL backend, has been made. This, even more so
5670 than the other backends, should be considered still a work in
5671 progress; known problems include that the Linux kernel in 64-bit
5672 mode does not propagate the correct sigcontext structure to
5673 userspace, and consequently SBCL on a parisc64 kernel will not
5675 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5676 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5677 suppressed.) Also now that the compiler is looking at declarations
5678 in the environment, it checks optimization declarations as well,
5679 and suppresses inlining when (> DEBUG SPEED).
5680 * More fixes have been made to treatment of floating point exception
5681 treatment and other Unix signals. In particular, floating point
5682 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5683 * The detection and handling of control stack exhaustion (infinite
5684 or very deeply nested recursion) has changed. Stack exhaustion
5685 detection is now done by write-protecting pages at the OS level
5686 and applies at all optimization settings; when found, a
5687 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5688 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5689 be caught using IGNORE-ERRORS.
5690 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5691 correctly when transforming recursive LABELS functions to LETs.
5692 (thanks to Alexey Dejneka)
5693 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5694 that are names of constants or global variables.
5695 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5696 alien routines with docstrings.
5697 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5698 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5700 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5701 (thanks to Eric Marsden)
5702 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5703 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5704 * Bug fix: The SPARC backend can now compile functions involving
5705 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5706 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5707 to a functions expecting a PATHNAME-DESIGNATOR.
5708 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5709 lambda lists. (thanks to Alexey Dejneka)
5710 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5711 functions so that EXPORTing the name of the class doesn't cause
5712 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5713 to Antonio Martinez for reporting this)
5714 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5715 constant-folded without failing an assertion. (thanks to Einar
5716 Floystad Dorum for reporting this)
5717 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5718 types are now dealt with more correctly by the compiler.
5719 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5720 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5721 behaviour analogous to RENAME-FILE. This puts its behaviour more
5722 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5724 * The fasl file version number has changed again. (because of the
5725 bug fix involving the names of PCL MAKE-INSTANCE functions)
5727 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5728 * bug fix: Floating point exceptions are treated much more
5729 consistently on the x86/Linux and PPC/Linux platforms.
5730 * Array initialization with :INITIAL-ELEMENT is now much faster for
5731 cases when the compiler cannot open code the array creation, but
5732 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5733 array accesses have also seen a speed increase.
5734 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5735 specified. (This was at the root of some bad interactions between
5736 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5738 * bug fix: Internal error arguments for undefined functions are now
5739 computed correctly on the PPC/Linux platform.
5740 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5741 Raymond Toy's patch for CMU CL)
5742 * Support for the Solaris 9 operating environment has been included
5743 (thanks to Daniel Merritt)
5744 * A very ugly but hopefully complete draft of the missing FFI chapter
5745 of the manual has been created by reformatting the corresponding
5746 CMU CL manual chapter into (currently very ugly and incoherent)
5747 DocBook and bringing it up to date for SBCL behavior. Thus, the
5748 manual is now essentially complete, at least by my extreme
5749 once-and-only-once standards, whereby it's acceptable to refer to
5750 the doc strings of SB-EXT functions as the primary documentation.
5751 * The fasl file version number has changed again, due to cleanup of
5752 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5753 is no longer a static symbol.)
5755 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5756 * SBCL now builds with OpenMCL (version 0.12) as the
5757 cross-compilation host; also, more progress has been made toward
5758 bootstrapping under CLISP.
5759 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5761 * bug 158 fixed: The compiler can now deal with integer loop
5762 increments different from 1; fixing this turned out also to fix
5764 * bug 169 fixed: no more bogus warnings about using lexical bindings
5765 despite the presence of perfectly good SPECIAL declarations (thanks
5766 to David Lichteblau)
5767 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5768 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5769 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5771 * bug 180 fixed: Method combination specifications no longer ignore
5772 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5773 * bug fix: Structure type predicate functions now check their argument
5774 count as they should.
5775 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5776 correctly. (thanks to Pierre Mai)
5777 * minor incompatible change: The --noprogrammer option is deprecated
5778 in favor of the new --disable-debugger option, which is very similar.
5779 (The major difference is that it takes effect at a slightly different
5780 time at startup, causing handling of errors in --sysinit and
5781 --userinit files will be affected differently.) The
5782 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5783 been added to allow this functionality to be controlled from ordinary
5784 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5785 maintainers, who might want to run non-interactive scripts to
5786 build SBCL cores which will later be used interactively.)
5787 * minor incompatible change: The LOAD function no longer, when given
5788 a wild pathname to load, loads all files matching that pathname.
5789 Instead, an error of type FILE-ERROR is signalled.
5791 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5792 * bug 147 fixed: The compiler preserves its block link/count
5793 invariants more correctly now so that it doesn't crash. (thanks
5795 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5797 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5798 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5799 no-value-for-this-character as NIL (as specified by ANSI).
5800 * HOST-NAMESTRING on physical pathnames now returns a string that is
5801 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5802 (thanks to Christophe Rhodes)
5803 * The Alpha port handles icache flushing more correctly. (thanks to
5805 * More progress has been made toward bootstrapping under CLISP. (thanks
5806 to Christophe Rhodes)
5807 * The fasl file format has changed again, because dynamic loading
5808 on OpenBSD (which has non-ELF object files) motivated some cleanups
5809 in the way that foreign symbols are transformed and passed around.
5810 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5811 is no longer treated as whitespace by the reader, but instead as
5812 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5813 |A
\7fB|, instead of A as it used to.
5815 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5816 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5817 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5818 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5819 this as of 0.7.1.45, but was left out of the previous news section
5820 (thanks to Dan Barlow)
5821 * SBCL now runs on the Solaris operating system on SPARC architectures
5822 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5823 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5824 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5825 * SPARC backend cleanups, allowing builds of cores optimized for V8
5826 and V9 SPARCS, and also emission of code targeted to a particular
5827 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5829 * SBCL is closer to bootstrapping under CLISP, thanks to various
5830 fixes by Christophe Rhodes.
5831 * The fasl file format has changed again, to allow the compiler's
5832 INFO database to support symbol macros.
5833 * The user manual (in doc/) is formatted into HTML more nicely.
5834 (thanks to coreythomas)
5835 * The system is smarter about SUBTYPEP relationships, especially
5836 those involving NOT types (including types such as ATOM which are
5837 represented internally using NOT types). Thus SUBTYPEP is less
5838 likely to return (VALUES NIL NIL) in general, and in particular
5839 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5841 * The fasl file format has changed again, because the internal
5842 representation of types now includes a new slot to support the new
5843 SUBTYPEP-of-NOT-types logic.
5844 * (not a change in the main branch of SBCL, but a related prototype
5845 which can hopefully be merged into the main branch of SBCL in the
5846 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5847 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5848 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5849 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5850 dispatch macro character combinations. (thanks to Alexey Dejneka)
5851 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5852 that superficially look like logical namestrings correctly.
5853 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5855 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5856 default supplied-p) for &optional and &key arguments. (thanks to
5859 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5860 * incompatible change: The compiler is now less aggressive about
5861 tail call optimization, doing it only when (> SPACE DEBUG) or
5862 (> SPEED DEBUG). (This is an incompatible change because there are
5863 programs which relied on the old CMU-CL-style behavior to optimize
5864 away their unbounded recursion which will now die of stack overflow.)
5865 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5866 for non-GENCGC systems has been increased to 20M (since that
5867 seems much closer to the likely performance optimum for modern
5868 systems than the old 4M value was)
5869 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5870 and *DEBUG-PRINT-LEVEL*
5871 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5872 of CMU CL's support for SPARC, and various endianness and other
5873 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5874 * new syntactic sugar for the Unix command line: --load foo.bar is now
5875 an alternate notation for --eval '(load "foo.bar")'.
5877 ** The system now detects stack overflow and handles it gracefully,
5878 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5879 optimization settings. (This is a good thing in general, and
5880 its introduction in this version should be particularly timely
5881 for anyone whose code fails because of suppression of tail
5883 ** The system now hunts for the C variable "environ" in a more
5884 devious way, to avoid segfaults when the C library version differs
5885 between compile time and run time. (thanks to Christophe Rhodes)
5886 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5887 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5888 ** The compiler no longer issues bogus style warnings for undefined
5889 classes in the same source file as the DEFCLASSes which defined
5890 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5892 ** fixes in CONDITION class precedence list for undefined function
5893 errors (thanks to Alexei Dejneka)
5894 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5895 correctly. (thanks to Dan Barlow)
5896 ** portability fixes aiming at bootstrapping under CLISP (thanks
5897 to Dave McDonald and Christophe Rhodes)
5898 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5899 ** fixes in type translation and and type inference (thanks to
5901 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5902 ** various fixes in the new ports (thanks to Dan Barlow)
5903 * several changes related to debugging:
5904 ** suppression of tail recursion, as noted above
5905 ** stack overflow detection, as noted above
5906 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5907 is now the default. (For some time encapsulation has been more
5908 reliable than the breakpoint-based :ENCAPSULATE NIL
5909 implementation, at least on X86 systems; and I just noticed that
5910 encapsulation also seems closer to the spirit of the ANSI
5913 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5915 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5916 up properly again. (There was a packaging bug in 0.7.0 which
5917 left their definitions in SB-SYS::LOAD-FOREIGN and
5918 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5919 vital for most things which interface to C-level interfaces,
5920 like extensions working with sockets or databases or
5921 Perl-compatible regexes or whatever, and the need to fix
5922 this bug is the main reason that 0.7.1 was released so
5924 ** DEFGENERIC is now choosier about the methods it redefines, so that
5925 reLOADing a previously-LOADed file containing DEFGENERICs does
5926 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5927 cycle now works as it should. (thanks to Alexey Dejneka)
5928 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5929 fixed by Christophe Rhodes. (He actually submitted this patch
5930 months ago, and I delayed until after 0.7.0.)
5931 ** Bug 111 (internal compiler confusion about runtime checks on
5932 FUNCTION types) was fixed by Alexey Dejneka.
5933 * Some internal cleanups (getting rid of variables which aren't
5934 needed now that the byte interpreter is gone) caused the fasl
5935 file format number to change again.
5937 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5938 * major incompatible change: The default fasl file extension, i.e. the
5939 default extension for files produced by COMPILE-FILE, has changed
5940 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5942 ** There are many changes in the implementation of the compiler.
5943 SBCL is now essentially a compiler-only implementation of ANSI
5944 Common Lisp. EVAL still "interprets" a few special cases, but
5945 almost all the interesting cases are handled by creating
5946 a LAMBDA expression, calling COMPILE on it, then calling
5947 FUNCALL on the result.
5948 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5949 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5950 Since the code is newer, there might still be some new bugs
5951 (though not as many as before Martin Atzmueller's fixes:-). But
5952 the new code is substantially simpler and clearer, and hopefully
5953 any remaining bugs will be simpler, less fundamental, and more
5954 fixable then the bugs in the old code.
5955 ** The revised compiler is still a little unsteady on its feet.
5957 *** The debugging information it produces (particularly the names
5958 of FUNCTION objects) is sometimes much less useful than what
5959 the old compiler produced.
5960 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5961 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5962 within a MACROLET) has been temporarily weakened.
5963 ** There are new compiler optimizations for various functions:
5964 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5965 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5966 *** the math functions TRUNCATE, FLOOR, and CEILING
5967 *** the function-of-all-trades COERCE
5968 Mostly these should be transparent, but there's one
5969 potentially-annoying problem (bug 117): when the compiler
5970 inline-expands a function and does type analysis on the result,
5971 it can create control paths which have type mismatches, and
5972 when it can't prove that those control paths aren't taken,
5973 it will issue WARNINGs about the type mismatches. This is
5974 a particular problem in practice for the new sequence functions.
5975 It's not clear how this should be fixed, and for now, a
5976 workaround is given in the entry for 117 in the BUGS file.
5977 ** (Because of the interaction between the two previous items --
5978 occasional inlining problems and new inline expansions -- some
5979 of the new sequence function optimizations won't really kick in
5980 completely until debugging information, and then inlining, are
5981 straightened out in some future version.)
5982 * minor incompatible changes:
5983 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5984 DIRECTORY no longer implicitly promotes NIL slots of its
5985 pathname argument to :WILD. In particular, when you ask for the
5986 contents of a directory (which you used to be able to do without
5987 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5988 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5989 ** changes in behavior that ANSI explicitly defines to be
5990 implementation dependent:
5991 *** The new compiler-only implementation still conforms with ANSI,
5992 but acts a little different than before. Besides the obvious
5993 changes in performance tradeoffs (that the cost per form passed
5994 to EVAL has gone up, and the cost per form executed by EVAL
5995 has gone down), the behavior of the system changes a little
5996 because there are no longer any interpreted function objects.
5997 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5998 e.g. doing COMPILE on the output of interactive DEFUN is
6000 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
6002 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
6003 has changed from (:CL) to NIL.
6004 *** The CHAR-NAME of unprintable ASCII characters which, unlike
6005 e.g. #\Newline and #\Tab, don't have names specified in the
6006 ANSI Common Lisp standard, is now based on their ASCII symbolic
6007 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
6008 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
6009 are no longer used for output.
6010 ** changes in internal implementation constants:
6011 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
6012 4 million. (If your application spends a lot of time GCing and
6013 you have a lot of RAM, you might want to experiment with
6014 increasing it even more.)
6015 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
6016 However, almost all old code should still continue to work without
6017 immediate update, as SB-C-CALL is now a (deprecated) nickname
6019 ** Old operator names in the style DEF-FOO are now deprecated in
6020 favor of new corresponding names DEFINE-FOO, for consistency with
6021 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
6022 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
6023 internal symbols, but a few supported extensions like
6024 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
6025 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
6026 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
6027 etc. as you get deeper into recursive calls to the debugger
6028 command loop, instead of the old "5]", "5]]", "5]]]"
6029 sequence. (I was motivated to do this when squabbles between
6030 ILISP and SBCL left me very deeply nested in the debugger. In the
6031 short term, this change will probably provoke more ILISP/SBCL
6032 squabbles, but hopefully it will be an improvement in the long run.)
6033 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
6034 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
6035 function, since declaiming return types involving aliens is
6036 (1) annoyingly messy to do by hand and (2) vital to efficient
6037 compilation of code which calls such functions.
6038 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
6039 longer reexported by the SB-EXT package. They're solely useful
6040 for alien code, so it seems more logical that you should get
6041 them from the SB-ALIEN package, not in SB-EXT.
6042 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
6043 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
6044 features. Instead, the code that they used to control is always
6045 built into the system.
6046 * many other bug fixes
6047 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
6048 advantage of the new EVAL-WHEN stuff and to clean them up in
6049 general, and they are now more ANSI-compliant in a number of
6050 ways. Martin Atzmueller is responsible for a lot of this.
6051 ** Besides the cleanups discussed above, Martin Atzmueller fixed
6053 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
6054 *** correct ERROR type for various file operations
6055 *** some fixes for Lisp streams
6056 *** DEFMETHOD syntax checking
6057 *** changing old weird representation of debug information as
6058 strings (which, among their other deficiencies, don't transform
6059 correctly when you rename packages, and don't change their
6060 print representation when you change things like *PACKAGE*
6061 and *PRINT-LENGTH*) to symbols and lists of symbols
6062 He also made several improvements and fixed several bugs in DESCRIBE.
6063 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6065 *** misbehavior of WRITE-STRING/WRITE-LINE
6066 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6067 and several other LOOP problems as well
6068 *** DIRECTORY when similar filenames are present
6069 *** DEFGENERIC with :METHOD options
6070 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6071 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6072 *** argument ordering in FIND with :TEST option
6073 *** mishandled package designator argument in APROPOS-LIST
6074 *** various problems in the backquote readmacro
6075 *** a bug in APROPOS
6076 *** probably some others that I'm not describing very well here,
6077 since the CVS log documents them by reference to sbcl-devel
6078 messages, and the SourceForge archives aren't working well.:-(
6079 ** Dan Barlow improved the Alpha port (and is making progress on the
6080 PPC port, for those of you who think different).
6081 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6082 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6083 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6084 continues to work on the SPARC port (for those of you in a position
6085 to look down upon our little PC-compatible boxes from a great height).
6086 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6087 and uses that copy, rather than the current dynamic value, when
6088 it's trying to decide whether to truncate output. Thus e.g.
6089 (let ((*print-lines* 50))
6090 (pprint-logical-block (stream nil)
6092 (let ((*print-lines* 8))
6093 (print (aref possiblybigthings i) stream)))))
6094 should now truncate the logical block only at 50 lines, instead of
6095 often truncating it at 8 lines, as it did before.
6096 * The doc/cmucl/ directory, containing old CMU CL documentation
6097 from the time of the fork, is no longer part of the base system.
6098 SourceForge has shut down its anonymous FTP service, and with it
6099 my original plan for distributing the old CMU CL documentation
6100 there. For now, if you need these files you can download an old
6101 SBCL source release and extract them from it.
6102 * The fasl file version number changed again, for dozens of reasons,
6103 some of which are apparent above.
6105 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6106 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6107 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6108 patch, so that DISASSEMBLE output is much nicer.
6109 * The code in the SB-PROFILE package now seems reasonably stable.
6110 I still haven't decided what the final interface should look like
6111 (I'd like PROFILE to interact cleanly with TRACE, since both
6112 facilities use function encapsulation) but if you have a need
6113 for profiling now, you can probably use it successfully with
6114 the current CMU-CL-style interface.
6115 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6116 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6117 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6118 link now returns the dangling link itself, and for similar
6119 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6120 link itself. (In these cases the old code signalled an error and
6121 looped endlessly, respectively.) Thus, DIRECTORY now works even
6122 in the presence of dangling and cyclic symbolic links.
6123 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6124 is now a supported extension again, since the consensus on
6125 sbcl-devel was that it can be useful for ordinary development
6126 work, not just for debugging SBCL itself.
6127 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6128 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6129 that currently-defined functions might be redefined later with
6130 different return types.
6131 * Hash tables can be printed readably, as inspired by CMU CL code
6132 of Eric Marsden and SBCL code of Martin Atzmueller.
6133 * better error handling in CLOS method combination, thanks to
6134 Martin Atzmueller porting Pierre Mai's CMU CL patches
6135 * more overflow fixes for >16Mbyte I/O buffers
6136 * A bug in READ has been fixed, so that now a single Ctrl-D
6137 character suffices to cause end-of-file on character streams.
6138 In particular, now you only need one Ctrl-D at the command
6139 line (not two) to exit SBCL.
6140 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6142 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6143 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6144 does the right thing.
6145 * The implementation of some type tests, especially for CONDITION
6146 types, is now tidier and maybe faster, due to CMU CL code
6147 originally by Douglas Crosher, ported by Martin Atzmueller.
6148 * Some math functions have been fixed, and there are new
6149 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6150 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6151 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6152 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6153 likely to be built into sbcl-0.7.0.)
6154 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6155 CL, ported to SBCL by Martin Atzmueller)
6156 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6157 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6158 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6159 * There's a new slam.sh hack to shorten the edit/compile/debug
6160 cycle for low-level changes to SBCL itself, and a new
6161 :SB-AFTER-XC-CORE target feature to control the generation of
6162 the after-xc.core file needed by slam.sh.
6163 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6164 COMPILE-FILE is no longer supported, so that now every function
6165 gets an entry point, so that block compilation looks a little
6166 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6167 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6168 returns the number of bytes consed since the system started,
6169 rather than the number consed since the first time the function
6170 was called. (The new definition parallels ANSI functions like
6171 CL:GET-INTERNAL-RUN-TIME.)
6172 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6173 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6174 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6175 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6176 * Fasl file version numbers are now independent of the target CPU,
6177 since historically most system changes which required version
6178 number changes have affected all CPUs equally. Similarly,
6179 the byte fasl file version is now equal to the ordinary
6182 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6183 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6184 is no longer recognized. I apologize for this, because it was
6185 listed in SB-EXT as a supported extension, but I found that
6186 its existing behavior was poorly specified, as well as incorrectly
6187 specified, and it looked like too much of a mess to straighten it
6188 out. I have enough on my hands trying to get ANSI stuff to work..
6189 * many patches ported from CMU CL by Martin Atzmueller, with
6190 half a dozen bug fixes in pretty-printing and the debugger, and
6191 half a dozen others elsewhere
6192 * fixed bug 13: Floating point infinities are now supported again.
6193 They might still be a little bit flaky, but thanks to bug reports
6194 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6195 as flaky as they were.
6196 * The --noprogrammer command line option is now supported. (Its
6197 behavior is slightly different in detail from what the old man
6198 page claimed it would do, but it's still appropriate under the
6199 same circumstances that the man page talks about.)
6200 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6201 are now supported, and enabled by default. Thus, the compiler can
6202 handle many floating point and complex operations much less
6203 inefficiently. (Thus e.g. you can implement a complex FFT
6205 * The compiler now detects type mismatches between DECLAIM FTYPE
6206 and DEFUN better, and implements CHECK-TYPE more correctly, and
6207 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6208 thanks to patches from Martin Atzmueller.
6209 * various fixes to make the cross-compiler more portable to
6210 ANSI-conforming-but-different cross-compilation hosts (notably
6211 Lispworks for Windows, following bug reports from Arthur Lemmens)
6212 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6213 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6214 fixed thanks to Pierre Mai's CMU CL patches.
6215 * fixes to keep the system from overflowing internal counters when
6216 it tries to use i/o buffers larger than 16M bytes
6217 * fixed bug 45a: Various internal functions required to support
6218 complex special functions have been merged from CMU CL sources.
6219 (When I was first setting up SBCL, I misunderstood a compile-time
6220 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6221 * improved support for type intersection and union, fixing bug 12
6222 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6223 more obscure bugs as well
6224 * some steps toward byte-compiling non-performance-critical
6225 parts of the system, courtesy of patches from Martin Atzmueller
6226 * Christophe Rhodes has made some debian packages of sbcl at
6227 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6228 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6229 stable, but are nonetheless usable. When he's ready, I'd be happy
6230 to add them to the SourceForge "File Releases" section. (And if
6231 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6232 * new fasl file format version number (because of changes in
6233 internal representation of (OR ..) types to accommodate the new
6234 support for (AND ..) types, among other things)
6236 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6237 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6239 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6241 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6242 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6243 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6244 * DESCRIBE now works on structure objects again.
6245 * Most function call argument type mismatches are now handled as
6246 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6247 know whether the function will be redefined before the call is
6248 executed. (The compiler could flag local calls with full WARNINGs,
6249 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6250 it doesn't keep track of enough information to know whether calls
6251 are local in this sense.)
6252 * Compiler output is now more verbose, with messages truncated
6253 later than before. (There should be some supported way for users
6254 to override the default verbosity, but I haven't decided how to
6255 provide it yet, so this behavior is still controlled by the internal
6256 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6257 src/compiler/ir1util.lisp.)
6258 * Fasl file format version numbers have increased again, because
6259 support for the Gray streams extension changes the layout of the
6260 system's STREAM objects.
6261 * The Gray subclassable streams extension now works, thanks to a
6262 patch from Martin Atzmueller.
6263 * The full LOAD-FOREIGN extension (not just the primitive
6264 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6265 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6266 but like most other programs, it defaults to copying the Unix
6267 environment from the original process instead of starting the
6268 new process in an empty environment.
6269 * Extensions which manipulate the Unix environment now support
6270 an :ENVIRONMENT keyword option which doesn't smash case or
6271 do other bad things. The CMU-CL-style :ENV option is retained
6272 for porting convenience.
6273 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6274 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6276 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6278 * A patch from Martin Atzmueller seems to have solved the SIGINT
6279 problem, and as far as we know, signal-handling now works cleanly.
6280 (If you find any new bugs, please report them!)
6281 * The system no longer defaults Lisp source file names to types
6282 ".l", ".cl", or ".lsp", but only to ".lisp".
6283 * The compiler no longer uses special default file extensions for
6284 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6285 seems to expect a single default extension for all compiled code,
6286 and there's no compelling reason to try to stretch the standard
6287 to allow two different extensions.) Instead, byte-compiled files
6288 default to the same extension as native-compiled files.
6289 * Fasl file format version numbers have increased again, because
6290 a rearrangement of internal implementation packages made some
6291 dumped symbols in old fasl files unreadable in new cores.
6292 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6293 many fewer weird special cases.
6294 * Bug #17 (differing COMPILE-FILE behavior between logical and
6295 physical pathnames) has been fixed, and some related misbehavior too,
6296 thanks to a patch from Martin Atzmueller.
6297 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6298 by Tim Moore, ported to SBCL by Martin Atzmueller.
6299 * Martin Atzmueller fixed several filesystem-related problems,
6300 including bug #36, in part by porting CMU CL patches, which were
6301 written in part by Paul Werkowski.
6302 * More compiler warnings in src/runtime/ are gone, thanks to
6303 more patches from Martin Atzmueller.
6304 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6307 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6309 * DESCRIBE now works on CONDITION objects.
6310 * The debugger now handles errors which arise when trying to print
6311 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6313 * The build system now uses an additional file, customize-target-features.lisp,
6314 to allow local modifications to the target *FEATURES* list. (The point of
6315 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6316 debugging features enabled, without having to worry about propagating it
6317 into everyone's system when I do a "cvs update".) When no
6318 customize-target-features.lisp file exists, the target *FEATURES* list
6319 should be constructed the same way as before.
6320 * fixed bugs in DEFCONSTANT ANSI-compatibility:
6321 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
6322 warn about behavior which is undefined under the ANSI spec. Note: This
6323 is specified by ANSI, but it's not very popular with programmers.
6324 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
6325 macro in the SBCL sources for an example of a workaround which you
6326 might use to make portable ANSI-standard code which does what you want.
6327 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
6328 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
6329 when it's used as a non-toplevel form. (This is required in order
6330 to implement the DEFCONSTANT-EQX macro.)
6331 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6332 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6333 funny things, due to bugs in the implementation of EVAL-WHEN
6334 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6335 non-toplevel DEFCONSTANTs are uncommon.)
6336 * The core file version number and fasl file version number have been
6337 incremented, because the old noncompliant DEFCONSTANT behavior involved
6338 calling functions which no longer exist, and because I also took the
6339 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6340 * fixed bug 1 (error handling before read-eval-print loop starts), and
6341 redid debugger restarts and related debugger commands somewhat while
6343 ** The QUIT debugger command is gone, since it did something
6344 rather different than the SB-EXT:QUIT command, and since it never
6345 worked properly outside the main toplevel read/eval/print loop.
6346 Invoking the new TOPLEVEL restart provides the same functionality.
6347 ** The GO debugger command is also gone, since you can just invoke
6348 the CONTINUE restart directly instead.
6349 ** The TOP debugger command is also gone, since it's redundant with the
6350 FRAME 0 command, and since it interfered with abbreviations for the
6352 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6354 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6355 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6356 some porting work by Martin Atzmueller)
6357 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6358 with a boatload of patches which he ported to SBCL. Now that those
6360 ** The system tries to make sure that its low-priority messages
6361 are prefixed by semicolons, to help people who like to use
6362 syntax highlighting in their ILISP buffer. (This patch
6363 was originally due to Raymond Toy.)
6364 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6365 patches originally written by Raymond Toy.
6366 ** The compiler understands coercion between single-value and
6367 multiple-VALUES type expressions better, getting rid of some very
6368 weird behavior, thanks to patches originally by Robert MacLachlan
6369 and Douglas Crosher.
6370 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6371 lambda lists, thanks to a patch originally by Pierre Mai.
6372 ** The system no longer bogusly warns about "abbreviated type
6374 ** The compiler gets less confused by inlining and RETURN-FROM,
6375 thanks to some patches originally by Tim Moore.
6376 ** The system no longer hangs when dumping circular lists to fasl
6377 files, thanks to a patch originally from Douglas Crosher.
6378 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6379 undefined function error.
6380 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6381 in structure slot initforms) for now, documented workaround instead:-|
6382 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6383 * fixed bug 5: added stubs for various Gray stream functions called
6384 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6385 installed, at least appropriate type errors are generated
6386 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6387 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6388 consistently in DEFMETHOD forms.
6389 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6390 it doesn't seem to affect SBCL after all
6391 * The C runtime system now builds with better optimization and many
6392 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6394 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6396 * The system is now under CVS at SourceForge (instead of the
6397 CVS repository on my home machine).
6398 * The new signal handling code has been tweaked to treat register
6399 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6400 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6401 downstream, e.g. in debug-int.lisp, has implicit dependencies
6402 on the unsignedness of integer representation of machine words,
6403 and that caused the system to bomb out with infinite regress
6404 when trying to recover from type errors involving signed values,
6405 e.g. (BUTLAST '(1 2 3) -1).)
6406 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6407 (This was one of the bugs Peter Van Eynde reported back in July.)
6408 * The system now uses code inspired by Colin Walters' O(N)
6409 implementation of MAP (from the cmucl-imp@cons.org mailing
6410 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6411 inline the MAP operation, and there is more than one
6412 sequence argument to the MAP call (so that it can't just
6413 do ETYPECASE once and for all based on the type of the
6414 single sequence argument). (The old non-inline implementation
6415 of the general M-argument sequence-of-length-N case required
6416 O(M*N*N) time when any of the sequence arguments were LISTs.)
6417 * The QUIT :UNIX-CODE keyword argument has been renamed to
6418 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6419 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6421 * Raymond Wiker's patches to port dynamic loading from Linux to
6422 FreeBSD have been added.
6423 * The BUGS file is now more nearly up to date, thanks in large part
6424 to Martin Atzmueller's review of it.
6425 * The debugger now flushes standard output streams before it begins
6426 its output ("debugger invoked" and so forth).
6427 * The core version number and fasl file version number have both
6428 been incremented, because of incompatible changes in the layout
6430 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6431 used to not be called for a saved Lisp image.)
6432 * Martin Atzmueller's version of a patch to fix a compiler crash,
6433 as posted on sbcl-devel 13 September 2000, has been installed.
6434 * Instead of installing Martin Atzmueller's patch for the
6435 compiler transform for SUBSEQ, I deleted the compiler transform,
6436 and transforms for some similar consing operations.
6437 * A bug in signal handling which kept TRACE from working on OpenBSD
6439 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6440 away by constant folding
6441 * The system now defines its address space constants in one place
6442 (in the Lisp sources), and propagates them automatically elsewhere
6443 (through GENESIS and the sbcl.h file). Therefore, patching the
6444 address map is less unnecessarily tedious and error-prone. The
6445 Lisp names of address space constants have also been systematized.
6446 * CVS tags like dollar-Header-dollar have been removed from
6447 the sources, because they have never saved me trouble and
6448 they've been source of trouble working with patches and other
6449 diff-related operations.
6450 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6451 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6453 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6455 * The system has been ported to OpenBSD.
6456 * The system now compiles with a simple "sh make.sh" on the systems
6457 that it's supported on. I.e., now you no longer need to tweak
6458 text in the target-features.lisp-expr and symlinks in src/runtime/
6459 by hand, the make.sh takes care of it for you.
6460 * The system is no longer so grossly inefficient when compiling code
6461 involving vectors implemented as general (not simple) vectors (VECTOR T),
6462 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6463 which dares to use the various sequence functions on non-simple
6464 vectors, takes less of a performance hit.
6465 * There is now a primitive type predicate VECTOR-T-P
6466 to test for the (VECTOR T) type, so that e.g.
6467 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6468 can now be compiled with some semblance of efficiency. (The old code
6469 turned the type declaration into a full call to %TYPEP at runtime!)
6470 * AREF on (VECTOR T) is still not fast, since it's still compiled
6471 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6472 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6473 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6474 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6475 without making full calls to SUBTYPEP at runtime.
6476 (Some analogous efficiency issues for non-simple vectors specialized to
6477 element types other than T, or for non-simple multidimensional arrays,
6478 have not been addressed. They could almost certainly be handled the
6479 same way if anyone is motivated to do so.)
6480 * The changes in array handling break binary compatibility, so
6481 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6482 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6483 instead of (VALUES T T).
6484 * By following the instructions that Dan Barlow posted to sbcl-devel
6485 on 2 July 2000, I was able to enable primitive dynamic object
6486 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6487 functionality is not implemented (since it calls ld to resolve
6488 library references automatically, requiring RUN-PROGRAM for its
6489 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6490 try to resolve library references) is now supported.
6491 * The system now flushes the standard output streams when it terminates,
6492 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6493 them at several other probably-convenient times, e.g. in each pass of
6494 the toplevel read-eval-print loop, and after evaluating a form given
6495 as an "--eval" command-line option. (These changes were motivated by a
6496 discussion of stream flushing issues on cmucl-imp in August 2000.)
6497 * The source transform for TYPEP of array types no longer assumes
6498 that an array whose element type is a not-yet-defined type
6499 is implemented as an array of T, but instead punts, so that the
6500 type will be interpreted at runtime.
6501 * There is now some support for cross-compiling in make.sh: each of
6502 the phases of make.sh has its own script. (This should be transparent
6503 to people doing ordinary, non-cross-compile builds.)
6504 * Since my laptop doesn't have hundreds of megabytes of memory like
6505 my desktop machine, I became more motivated to do some items on
6506 my to-do list in order to reduce the size of the system a little:
6507 ** Arrange for various needed-only-at-cold-init things to be
6508 uninterned after cold init. To support this, those things have
6509 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6510 symbols with such names are now uninterned after cold init).
6511 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6512 fasl files for cold load.
6513 ** Remove the old compiler structure pooling code (which used to
6514 be conditional on the target feature :SB-ALLOC) completely.
6515 ** Redo the representation of some data in cold init to be more compact.
6516 (I also looked into supporting byte compiled code at bootstrap time,
6517 which would probably reduce the size of the system a lot, but that
6518 looked too complicated, so I punted for now.)
6519 * The maximum signal nesting depth in the src/runtime/ support code has
6520 been reduced from 4096 to 256. (I don't know any reason for the very
6521 large old value. If the new smaller value turns out to break something,
6522 I'll probably just bump it back up.)
6523 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6525 * Many, many bugs reported by Peter Van Eynde have been added to
6526 the BUGS list; some have even been fixed.
6527 * While enabling dynamic object file loading, I tried to make the
6528 code easier to understand, renaming various functions and variables
6529 with less ambiguous names, and changing some function calling
6530 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6531 * While trying to figure out how to do the OpenBSD port, I tried to
6532 clean up some of the code in src/runtime/. In particular, I dropped
6533 support for non-POSIX signal handling, added various comments,
6534 tweaked the code to reduce the number of compilation warnings, and
6535 renamed some files to increase consistency.
6536 * To support the new automatic configuration functionality in make.sh,
6537 the source file target-features.lisp-expr has been replaced with the
6538 source file base-target-features.lisp-expr and the machine-generated
6539 file local-target-features.lisp-expr.
6540 * fixed a stupid quoting error in make.sh so that using CMU CL
6541 "lisp -batch" as cross-compilation host works again
6543 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6545 * DESCRIBE no longer tries to call itself recursively to describe
6546 bound/fbound values, so that it no longer fails on symbols which are
6547 bound to themselves (like keywords, T, and NIL).
6548 * DESCRIBE now works on generic functions.
6549 * The printer now prints less-screwed-up representations of closures
6550 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6551 * A private symbol is used instead of the :EMPTY keyword previously
6552 used to mark empty slots in hash tables. Thus
6553 (DEFVAR *HT* (MAKE-HASH-TABLE))
6554 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6555 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6556 now does what ANSI says that it should. (You can still get
6557 similar noncompliant behavior if bang on the hash table
6558 implementation with all the symbols you get back from
6559 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6560 This breaks binary compatibility, since tests for equality to
6561 :EMPTY are wired into things like the macroexpansion of
6562 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6564 * There's now a minimal placeholder implementation for CL:STEP,
6565 as required by ANSI.
6566 * An obscure bug in the interaction of the normal compiler, the byte
6567 compiler, inlining, and structure predicates has been patched
6568 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6569 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6571 * Missing ordinary arguments in a macro call are now detected even
6572 when the macro lambda list contains &KEY or &REST.
6573 * The debugger no longer complains about encountering the top of the
6574 stack when you type "FRAME 0" to explicitly instruct it to go to
6575 the top of the stack. And it now prints the frame you request even
6576 if it's the current frame (instead of saying "You are here.").
6577 * As specified by ANSI, the system now always prints keywords
6578 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6580 * The default initial SIZE of HASH-TABLEs is now smaller.
6581 * Type information from CLOS class dispatch is now propagated
6582 into DEFMETHOD bodies, so that e.g.
6583 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6585 is now basically equivalent to
6586 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6587 (DECLARE (TYPE SINGLE-FLOAT X))
6589 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6590 operation, without having to do run-time type dispatch.
6591 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6592 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6593 * Since I don't seem to be making big file reorganizations very often
6594 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6595 is overflowing my ability to conveniently back them up), I've finally
6596 checked the system into CVS. (The CVS repository is on my home system,
6597 not at SourceForge -- putting it on SourceForge might come later.)
6598 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6599 high-level GC-NOTIFY-FOO functions send their output. (There's
6600 still very little control of where low-level verbose GC functions
6601 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6602 less than it used to -- the GC-NOTIFY-FOO functions are now under
6603 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6604 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6605 in only one place in the source code, and propagates it automatically
6606 everywhere that it's needed. Thus e.g. when I bump the version from
6607 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6608 * The C source files now include boilerplate legalese and documentation
6609 at the head of each file (just as the Lisp source files already did).
6610 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6611 to his page will be replaced with a link to his new CLiki service.
6613 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6615 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6616 * The build process now looks for GNU make under the default name "gmake",
6617 instead of "make" as it used to. If GNU make is not available as "gmake"
6618 on your system, you can change this default behavior by setting the
6619 GNUMAKE environment variable.
6620 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6621 can build without error under CMU CL.
6623 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6625 * There is now a partial SBCL user manual (with some new text and some
6626 text cribbed from the CMU CL manual).
6627 * The beginnings of a profiler have been added (starting with the
6628 CMU CL profiler and simplifying and cleaning up). Eventually the
6629 main interface should be through the TRACE macro, but for now,
6630 it's still accessed through vaguely CMU-CL-style functions and macros
6631 exported from the package SB-PROFILE.
6632 * Some problems left over from porting CMU CL to the new
6633 cross-compilation bootstrap process have been cleaned up:
6634 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6635 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6636 part when getting rid of the compiler *BACKEND* stuff.)
6637 ** The value of *NULL-TYPE* was screwed up, because it was
6638 being initialized before the type system knew the final
6639 definition of the 'NULL type. This screwed up several key
6640 optimizations in the compiler, causing inefficiency in all sorts
6641 of places. (I found it because I wanted to understand why
6642 GET-INTERNAL-RUN-TIME was consing.)
6643 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6644 PROCLAIM FTYPE information. Unfortunately this broke binary
6645 compatibility again, since now the forms output by DEFGENERIC
6646 to refer to functions which didn't exist in 0.6.3.
6647 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6648 can use the new (as of 0.6.3) transform for SOME into MAP into
6650 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6651 values to (INTEGER 0 1000000), so that the time code will no longer
6652 occasionally get blown up by Linux returning 1000000 microseconds
6653 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6654 its output conform to the ANSI spec. (Alas, this makes its output
6655 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6656 * A full call to MAP NIL with a single sequence argument no longer conses.
6657 * fixes to problems pointed out by Martin Atzmueller:
6658 * The manual page no longer talks about multiprocessing as though
6659 it were currently supported.
6660 * The ILISP support patches have been removed from the distribution,
6661 because as of version 5.10.1, ILISP now supports SBCL without us
6662 having to maintain patches.
6663 * added a modified version of Raymond Toy's recent CMU CL patch for
6664 EQUALP comparison of HASH-TABLE
6666 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6668 * The system still can't cross-compile itself with
6669 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6670 entails), but at least it can compile more of itself that way
6671 than it used to be able to, and various buglets which were uncovered
6672 by trying to cross-compile itself that way have now been fixed.
6673 * This release breaks binary compatibility again. This time
6674 at least I've incremented the FASL file format version to 2, so that the
6675 problem can be detected reliably instead of just causing weird errors.
6676 * various new style warnings:
6677 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6678 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6679 ** using the lexical binding of a variable named in the *FOO* style
6680 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6681 as specified by ANSI.
6682 * *RANDOM-STATE* is no longer automatically initialized from
6683 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6684 default behavior of the system is to repeat its behavior every time
6685 it's run. If you'd like to change this behavior, you can always
6686 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6687 old convention there was no comparably easy way to get the system to
6688 repeat its behavior every time it was run.
6689 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6690 FTYPE declarations has been removed, in favor of their ANSI
6691 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6692 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6693 the types of their sequence arguments can be determined at compile time.
6694 This is done through a new open code expansion for MAP which eliminates
6695 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6696 argument types can be determined at compile time.
6697 * The optimizer now transforms COERCE into an identity operation when it
6698 can prove that the coerced object is already of the correct type. (This
6699 can be a win for machine generated code, including the output of other
6700 optimization transforms, such as the MAP transform above.)
6701 * Credit information has been moved from source file headers into CREDITS.
6702 * Source file headers have been made more standard.
6703 * The CASE macro now compiles without complaining even when it has
6706 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6708 * (Note that the way that the PCL macroexpansions were rewritten
6709 to accommodate the change in DEFGENERIC below breaks binary
6710 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6711 not run under sbcl-0.6.2. Once we get out of alpha releases,
6712 i.e. hit release 1.0.0, we'll probably try to maintain binary
6713 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6714 and sbcl-1.4.4. Until then, however, it might be fairly common
6715 for maintenance releases to break binary compatibility.)
6716 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6718 * The reporting of unhandled signals has been changed to print some
6719 explanatory text as well as the report form. (Previously only
6720 the report form was printed.)
6721 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6722 it defines, so that the compiler no longer issues undefined function
6723 warnings for compiled-but-not-yet-loaded generic functions.
6724 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6725 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6726 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6727 section of the ANSI spec are supported.
6728 * The "" nickname for the "KEYWORD" package has been removed.
6729 The reader still handles symbol tokens which begin with a package marker
6730 as keywords, but it doesn't expose its mechanism for doing so in the
6731 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6732 * The system now issues STYLE-WARNINGs for contradictory TYPE
6733 proclamations. (Warnings for contradictory FTYPE proclamations would
6734 be nice too, but those can't be done usefully unless the type system
6735 is made smarter about FUNCTION types.)
6736 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6737 systematized, so that "*target-*.lisp is supposed to exist only on the
6738 target and imply that there's a related file which exists on the
6739 host, and *host-*.lisp is supposed to exist only on the host and imply
6740 that there's a related file which exists on the target. This involves a
6741 lot of renaming. Hopefully the acute confusion caused by the renaming
6742 will be justified by the reduction in chronic confusion..
6743 ** runtime-type.lisp -> early-target-type.lisp
6744 ** target-type.lisp -> late-target-type.lisp
6745 ** early-host-format.lisp -> early-format.lisp
6746 ** late-host-format.lisp -> late-format.lisp
6747 ** host-error.lisp -> misc-error.lisp
6748 ** early-error.lisp -> early-target-error.lisp
6749 ** late-error.lisp -> late-target-error.lisp
6750 ** host-defboot.lisp -> early-defboot.lisp
6751 ** code/misc.lisp -> code/target-misc.lisp
6752 ** code/host-misc.lisp -> code/misc.lisp
6753 ** code/numbers.lisp -> code/target-numbers.lisp
6754 ** code/early-numbers.lisp -> numbers.lisp
6755 ** early-host-type.lisp -> early-type.lisp
6756 ** late-host-type.lisp -> late-type.lisp
6757 ** host-typep.lisp -> typep.lisp
6758 ** load.lisp -> target-load.lisp
6759 ** host-load.lisp -> load.lisp
6760 ** host-disassem.lisp -> disassem.lisp
6761 ** host-insts.lisp -> insts.lisp
6762 ** byte-comp.lisp -> target-byte-comp.lisp
6763 ** host-byte-comp.lisp -> byte-comp.lisp
6764 ** host-signal.lisp -> signal.lisp
6765 ** host-defstruct.lisp -> defstruct.lisp
6766 ** late-target-type.lisp -> deftypes-for-target.lisp
6767 Furthermore, several other previously target-only files foo.lisp (e.g.
6768 hash-table.lisp and random.lisp) have been split into a target-and-host
6769 foo.lisp file and a target-only target-foo.lisp file, with their key type
6770 definitions in the target-and-host part, so that the cross-compiler will
6771 know more about target types.
6772 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6773 gone away. In their place are various *BACKEND-FOO* variables
6774 corresponding to the slots of the old structure.
6775 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6776 into the target SBCL has been fixed.
6777 * The chill.lisp system for loading cold code into a running SBCL
6779 * Support for the CMU CL "scavenger hook" extension has been removed.
6780 (It was undocumented and unused in the CMU CL sources that SBCL was
6781 derived from, and stale in sbcl-0.6.1.)
6782 * Various errors in the cross-compiler type system were detected
6783 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6784 (enabling various consistency checks). Many of them were fixed,
6785 but some hard problems remain, so the compiler is back to
6786 running without *TYPE-SYSTEM-INITIALIZED* for now.
6787 * As part of the cross-compiler type system cleanup, I implemented
6788 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6789 * I have started adding UNCROSS calls throughout the type system
6790 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6791 on cross-compiler input files will be able to go away, and various
6793 * CONSTANTP now returns true for quoted forms (as explicitly required
6796 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6798 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6799 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6800 (MAKE-LIST -1). In the longer term, it ought to become true
6801 that declarations are assertions even at SAFETY 1. For now, it's not
6802 quite true even at SAFETY 3, but it's at least more nearly true..
6803 (Note that this change seems to increases the size of the system by
6804 O(5%) and to decrease the speed of the compiler by 20% or more.)
6805 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6806 for the problem of printing dozens of lines of distracting information
6807 about low-level system machinery as part of the top stack frame
6808 on entry to the debugger when an undefined function was called.
6809 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6810 is not reset to COMMON-LISP-USER.
6811 * Compilation of stuff related to dyncount.lisp has been made conditional
6812 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6813 smaller. The various dyncount-related symbols have been moved into
6814 a new "SB-DYNCOUNT" package.
6815 * tty-inspect.lisp has been renamed to inspect.lisp.
6816 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6817 feature has gone away. (When we eventually port to other flavors of
6818 libc and/or Unix, we'll try to make the differences between flavors
6819 invisible at the user level.)
6820 * Various other *FEATURES* tags, and/or their associated conditionals,
6821 have been removed if obsolescent, or given better documentation, or
6822 sometimes given more-mnemonic names.
6824 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6826 * tidied up "make.sh" script
6827 * tidied up system directory structure
6828 * better "clean.sh" behavior
6829 * added doc/FOR-CMUCL-DEVELOPERS
6830 * many many small tweaks to output format, e.g. removing possibly-confusing
6831 trailing #\. character in DESCRIBE-INSTANCE
6832 * (EQUALP #\A 'A) no longer signals an error.
6833 * new hashing code, including EQUALP hashing
6834 * tidied up Lisp initialization and toplevel
6835 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6836 * command line argument processing
6837 * added POSIX-GETENV function to deal with Unix-ish environment variables
6838 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6839 terminating SBCL on EOF
6840 * non-verbose GC by default
6841 * There is no more "sbcl" shell script; the sbcl file is now the C
6842 runtime executable (just like CMU CL).
6843 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6845 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6846 symbol and package information as Lisp native symbol and package objects
6847 instead of strings naming symbols and strings naming packages. This way,
6848 whenever packages are renamed (as in warm init), debug information is
6849 transformed along with everything else.
6850 * tweaked the optimization policy declarations which control the building
6851 of SBCL itself. Now, among other things, the system no longer saves
6852 source location debugging information. (This helps two problems at once
6853 by reducing SBCL size and by keeping SBCL from trying to look for its
6854 sources -- which may not exist -- when reporting errors.)
6855 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6856 debugging and testing purposes
6857 * cleaned up printing, making the printer call PRINT-OBJECT for
6858 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6859 methods, giving nearly-ANSI behavior
6860 * converted almost all special variables to use *FOO* naming convention
6861 * deleted PARSE-TIME functionality, since it can be done portably
6862 * moved some files out of cold init into warm init
6863 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6865 * regularized formatting of source files
6866 * added an install.sh script
6867 * fixed ridiculous memory usage of cross-compiler by making
6868 compiler/alloc.lisp not try to do pooling unless it can hook
6869 itself into the GC of the cross-compilation host. Now the system
6870 builds nicely on my old laptop.
6871 * added :SB-ALLOC in target-features.lisp-expr
6872 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6873 was not implemented)
6874 * re-did condition handling and note reporting in the compiler. Notes
6875 are no longer handled by signalling conditions. Style warnings
6876 and warnings are handled more correctly and reported in such a way
6877 that it's easy to find one or the other in your output (so that you
6878 can e.g. figure out which of many problems caused COMPILE-FILE to
6880 * changed the severity of several compiler warnings from full WARNING
6881 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6882 compiler note reporting so that it doesn't use the condition system
6883 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6884 COMPILE-FILE command)
6885 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6886 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6887 no longer supported, since their implementation was deeply intertwingled
6888 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6889 * removed bogus "support" for compiler macros named (SETF FOO), and
6890 removed the compiler macro for SETF INFO (but only after making a fool
6891 of myself on the cmucl-imp mailing list by posting a bogus patch for
6892 DEFINE-COMPILER-MACRO..)
6893 * Compiled files containing forms which have side effects on the Lisp
6894 reader (such as DEFPACKAGE forms) are now handled more correctly.
6895 (Compiler queuing of top level lambdas has been suppressed by setting
6896 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6897 * deleted various currently-unused source files, e.g. gengc.lisp. They
6898 may be added back at some point e.g. when porting to other architectures,
6899 but until they are it's distracting to distribute them and to try to
6901 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6902 there were so many of them they're just distractions, and UNCROSS is
6903 known to be able to handle the current sources
6904 * moved PROFILE functionality into TRACE, so that it will be clear
6905 how the wrapping and unwrapping of functions when you profile them
6906 interacts with the wrapping and unwrapping of functions when you
6907 trace them. (Actually, the functionality isn't there yet, but at least
6908 the interface specification is there. Hopefully, the functionality will
6909 arrive with some future maintenance release.)
6910 * removed host-oops.lisp
6911 * changed signature of QUIT function to allow UNIX-CODE argument
6912 * fixed READ-SEQUENCE bug
6913 * tweaked verbose GC output so that it looks more like the progress
6914 output that ANSI specifies for functions like LOAD
6915 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6916 * added <http://sbcl.sourceforge.com> to the banner information printed by