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 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
7 the working directory of the spawned process.
8 (lp#791800) (patch by Matthias Benkard)
9 * enhancement: boxed vectors (vectors of T or of FIXNUM) can now be
10 stack-allocated on PPC.
11 * enhancement: "fixed objects" can now be stack-allocated on PPC.
12 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
13 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
14 also returns VOPs which do not translate any functions, and finds
15 defoptimizer types ir2convert and stack-allocate-result.
16 * enhancement: better type derivation for APPEND, NCONC, LIST.
18 * enhancement: MAP-ALLOCATED-OBJECTS (the heart of ROOM) now walks the
19 heap in a manner similar to the GC rather than its previous ad-hoc
20 scheme, and is therefore no less and possibly more accurate.
21 * fixes and enhancements related to Unicode:
22 ** the character database information has been updated to Unicode 6.2;
23 ** support for canonical and compatibility decomposition of characters has
24 been added, along with support for primary composition;
25 ** support for Unicode normalization forms of strings (NFC, NFKC, NFD and
26 NFKD) has been included;
27 ** querying the character database for code points not defined by Unicode
28 gives less wrong answers (lp#1178038, reported by Ken Harris)
29 * enhancement: print intermediate evaluation results for some ASSERTed
30 expressions. (lp#789497)
31 * enhancement: x86-64 disassemblies are annotated with unboxed constant
32 values when there are references to (RIP-relative) unboxed constants.
33 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
34 of quadratically with the size of the input in the worst case.
36 * bug fix: handle errors when initializing *default-pathname-defaults*,
37 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
38 decoding errors, or directories being deleted.
39 * bug fix: Loading a core with a discontiguous dynamic space now correctly
40 computes the amount of dynamic space used.
41 * bug fix: disassembler missing ",8" on SHLD
42 * bug fix: backtracing through INTERNAL-ERROR signal handlers on systems
43 that provide an "invalid" stack frame link for the signal handler
44 itself now use the saved-fp-and-pc mechanism to pick up from the stack
45 frame in the interrupt (signal) context. This is known to affect
46 threaded FreeBSD/x86-64.
47 * bug fix: some LOOP statements couldn't be compiled.
49 * bug fix: sb-sequence:dosequence works on literal vectors.
50 * bug fix: errors in generic arithmetic show the assembly routine's
51 caller on x86 and x86-64. (lp#800343)
52 * bug fix: Compile-time type errors should never result in COMPILE-FILE
54 * bug fix: Known bad local calls do not cause strange failures when
55 emitting or dumping code. (lp#504121)
56 * bug fix: Multiply-inlined structure constructor don't cause IR2-time
57 codegen errors: type checks are inserted as necessary. (lp#1177703)
58 * bug fix: Unsigned modular arithmetic is correctly converted into signed
59 modular arithemtic (mostly to exploit fixnum-width VOPs). (lp#1026634)
60 * bug fix: a combination of inlined local function with &optional and
61 recursion no longer causes undescriptive compiler errors. (lp#1180992)
62 * bug fix: sub-word BOOLEAN alien types now disregard higher order bits
63 when testing for non-zero-ness.
64 * bug fix: (CONCATENATE 'null ...) no longer fails for generic sequences.
66 * optimization: faster ISQRT on fixnums and small bignums
67 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
68 * optimization: On x86-64, the number of multi-byte NOP instructions used
69 for code alignment is now always minimal.
70 * optimization: On 64-bit targets, the compiler generates much faster
71 code for type checks for types known at compile time that are smaller
72 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
73 their COMPLEX variants.
74 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
75 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
76 * optimization: ROOM no longer conses so egregiously on non-x86oid
78 * optimization: associative bitwise operations reassociate patterns like
79 (f (f x k1) k2) to expose (f x (f k1 k2)). Same for + and * of
81 * optimization: quasiquote expressions now perform more constant folding,
82 instead of consing equal lists at runtime. (lp#1026439)
83 * optimization: local call analysis of inlined higher-order function
84 should converge more quickly, resulting in better code for complex
87 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
88 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
90 * bug fix: :allocation slot option works for condition slots
92 * bug fix: redefining conditions does not lead to multiple evaluations of
93 hairy slot initfunctions anymore (lp#1164969)
94 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
96 * bug fix: function constants now work as initforms and default initarg
97 values of conditions (lp#539517)
98 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
99 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
100 * bug fix: no more bogus ## references when pretty printing backquoted
101 forms with non-trivial structure sharing. (lp#1161218)
102 * bug fix: Don't signal an error on (setf (documentation nil 'function)
103 "doc"). Signal a style-warning instead when trying to set documentation
104 of NIL for all other documentation types. (Reported by Zach
105 Beane; regression since 2e52fa05.)
106 * bug fix: modular arithmetic involving large constants and conditionals
107 should no longer result in spurious dead code elimination. (Reported by
109 * bug fix: our mach exception handler can seemingly called very early in
110 the program execution process on OS X 10.8.0. Try and handle that case
111 robustly, without potentially leaking mach ports too much.
112 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
114 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
115 * enhancement: the continuable error when defknown-ing over extant
116 fndb entries can be ignored by passing :overwrite-fndb-silently t
117 as a keyword argument to sb-c:defknown (after attributes). Useful
118 to allow defknown to be re-loaded. Use with :allow-other-keys t
119 for backward compatibility.
120 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
122 * bug fix: Prevent a make-array transform from modifying source forms
123 causing problems for inlined code. Thanks to Bart Botta.
124 (regression since 1.0.42.11-bis)
125 * bug fix: clear-output calls the correct gray stream routine,
126 sb-gray:stream-clear-output. (lp#1153257)
127 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
129 * bug fix: Better error messages for package operations (lp#1154776)
130 * bug fix: delete-package on a nonexistent package should signal a cerror.
131 (regression since 1.0.37.44).
132 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
133 (lp#1154946, lp#1072112)
134 * bug fix: compiling make-array no longer signals an error when the
135 element-type is an uknown type, a warning is issued instead.
136 Thanks to James Kalenius (lp#1156095)
137 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
138 produces wrong results for some inputs. (Thanks to Jan Moringen.)
141 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
142 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
144 * new feature: package local nicknames. See manual for details.
145 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
146 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
147 * enhancement: easier to use restarts for resolving name-conflicts
148 resulting from IMPORT, EXPORT, or USE-PACKAGE.
149 * enhancement: variant DEFPACKAGE forms now signal a full error with
150 restarts provided for resolving the situation. (lp#891351)
151 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
152 DEFPACKAGE forms can now signal a full error with restarts provided for
153 resolving the situation. See manual for details. (lp#891351)
154 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
155 (Thanks to Anton Kovalenko.) (lp#1102748)
156 * enhancement: backtrace improvements
157 ** secondary CLOS dispatch functions have better debug names (lp#503081)
158 ** easier to read method names in backtraces. See
159 SB-DEBUG:*METHOD-FRAME-STYLE*.
160 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
161 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
162 SB-DEBUG:BACKTRACE-AS-LIST.
163 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
164 information is available in less intrusive form as frame annotations.
165 * enhancement: SB-POSIX now provides MAP-ANON.
166 * enhancement: test-suite results are colorized, failures in red, unexpected
167 success in green. Works on Windows and on terminals with ANSI escape code
168 support. Can be disabled with --no-color.
169 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
170 (thanks to James M. Lawrence)
171 * bug fix: no more unused variable style warnings from RESTART-CASE
172 macroexpansion (lp#1113859)
173 * bug fix: no more unused variable style warnings when loading
174 sb-bsd-sockets.asd (lp#1114681)
175 * bug fix: deleting a package removes it from implementation-package
176 lists of other packages.
177 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
178 This does not fix the occasional "interrupt already pending" issue, though.
179 * bug fix: (setf (documentation 'x 'function)) and
180 (setf (documentation #'x t)) set documentation in different places.
181 (regression since 1.0.43.63)
182 * bug fix: build on newer glibc. (lp#1095036)
184 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
185 * optimization: LOOP expressions using "of-type character" have slightly
186 more efficient expansions.
187 * bug fix: very long (or infinite) constant lists in DOLIST do not result
188 in very long compile times or heap exhaustion anymore. (lp#1095488)
189 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
190 * bug fix: adjust-array ignored :initial-element for simple-vectors.
192 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
193 longer cause infinite loops (on circular data) or violate eqlity
194 constraints. (lp#1099708)
195 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
197 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
198 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
200 * enhancement: support for C-c to interrupt the foreground thread
201 on Windows. (Thanks to Anton Kovalenko.)
202 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
203 * enhancement: Safepoint builds on POSIX platforms can now optionally be
204 built without pseudo-atomic sequences and their run-time overhead.
205 * enhancement: Threads created outside of Lisp can enter Lisp through
206 alien callbacks and appear as Lisp threads for the duration of that
207 function invocation. On safepoint builds only.
208 * enhancement: Miscellaneous improvements to namestrings and underlying
209 calls to OS functions for file system access on Windows. (Thanks to
211 * enhancement: The MSI installer support for Windows now uses Windows
212 Installer XML at least version 3.5 and includes various usability
213 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
214 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
215 on Windows. (Thanks to Anton Kovalenko.)
216 * enhancement: The Windows backend now supports the x86-64 platform.
217 (Thanks to Anton Kovalenko.)
218 * bug fix: fasls are now once again directly executable (on platforms
219 supporting shebang lines, with a suitably-installed sbcl).
220 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
221 * bug fix: Fix CAS access to slots of direct instances of structure classes
222 in the presence of subclasses sharing the same conc-name.
223 * bug fix: Logical pathname namestrings on Windows have been changed to
224 be lower-case, to minimize differences between POSIX and Windows.
226 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
227 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
228 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
229 (NT 5.0) is no longer being maintained.
230 * notice: Starting with this version, SBCL on Windows no longer supports
231 building with disabled thread support.
232 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
233 * enhancement: New feature sb-dynamic-core allows the runtime to be
234 rebuilt or relocated without requiring changes to the core file on
235 all linkage table platforms. Required on Windows. (Thanks to Anton
237 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
238 * enhancement: I/O on Windows unnamed pipes is interruptible
239 asynchronously using interrupt-thread, timers when running on Windows NT
240 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
242 * enhancement: Support for the experimental safepoint-based stop-the-world
243 protocol on the PowerPC platform.
244 * bug fix: Non-blocking reads from the Windows console were not necessarily
245 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
246 * bug fix: stability of threads on Windows has been improved upon through
247 an updated stop-the-world protocol (thanks to Anton Kovalenko).
249 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
250 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
251 (COMPILE and COMPILE-FILE still do.)
252 * optimization: the SPARC backend now supports the precise generational
253 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
254 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
255 * enhancement: add experimental support for the SB-THREAD feature and the
256 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
257 Threads are enabled by default, and this version of SBCL is considered
258 to be the last and final release to officially support building with
260 * optimization: The compiler no longer rotates loops in some cases where
261 this transformation actually lead to worse code being generated.
262 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
263 symbol-macros by lexical bindings.
264 * bug fix: stack allocation was prevented by high DEBUG declaration in
266 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
267 (thanks to SANO Masatoshi)
268 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
269 :JUNK-ALLOWED was true.
270 * bug fix: type derivation inferred overly conservative types for
271 unions of array types. (lp#1050768)
273 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
274 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
275 source annotation of DISASSEMBLE output. Defaults to T.
276 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
277 WAIT-P argument added to WITH-RECURSIVE-LOCK.
278 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
280 * enhancement: Optional features (not enabled by default) allow the
281 use of signals for inter-thread synchronization to be reduced on certain
282 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
283 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
284 to test these experimental features. Known remaining bugs include minor
285 thread safety issues, less timely freeing of memory by GC, and certain
286 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
287 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
288 comparisons, particularly on almost-sorted inputs.
289 * bug fix: Reading floats with large exponents no longer takes too much time
290 before reporting that the exponent is too large.
291 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
292 correctly when the received datagram is larger than the provided buffer.
293 (lp#1023438, thanks to Robert Uhl)
294 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
295 a SYMBOL-VALUE form with a constant symbol argument.
296 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
297 into a DEFCAS defined place was used as the place.
298 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
299 for from bit-vectors.
300 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
301 lead to internal errors or crashes (lp#1058799).
302 * documentation: a section on random number generation has been added to the
305 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
306 * enhancement: implicit generic function warnings now specify the package
307 in which the new generic function is being created.
308 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
309 updates of CAS-able places (similar to Clojure's swap!).
310 * enhancement: run-program no longer decodes and re-encodes environment when
311 :environment argument is not provided. (lp#985904)
312 * enhancement: errors during compiler-macro expansion no longer cause
313 runtime errors, only a compile-time warning, otherwise behaving as if
314 the compiler macro had declined to expand.
315 * optimization: On x86-64, code alignment of block headers is done with
316 multi-byte NOPs now instead of repetitions of the single-byte NOP.
317 * optimization: MAP-INTO is substantially faster when the target sequence is
318 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
319 thanks to James M. Lawrence)
320 * optimization: the compiler no longer heap-conses to check exits in cases
321 where the exit function is dynamic extent, or when it can prove the exit
322 function cannot escape. (lp#1002534)
323 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
324 element type, and vectors that aren't SIMPLE-ARRAYs.
325 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
326 speed (around 1/3 the time in some cases), and a little better in terms of
327 comparison calls. (Thanks to Takeru Ohta)
328 * bug fix: On SPARC, a limitation on the number of code constants emittable
329 by the compiler has been lifted, allowing certain long functions to
330 compiled and assembled which had previously been unsupported; fixes
331 cl-bench on this ISA (lp#1008996).
332 * bug fix: potential for infinite recursion during compilation of CLOS slot
333 typechecks when dependency graph had loops. (lp#1001799)
334 * bug fix: error forms reported with some program-errors were not escaped
336 * bug fix: functions from EVAL are now on more equal footing with functions
337 from COMPILE. (lp#1000783, lp#851170, lp#922408)
338 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
339 objects as its :METHOD-COMBINATION argument, not just lists designating
340 method combinations. (lp#936513)
341 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
343 * bug fix: restore build on solaris/sparc. (lp#1008506)
344 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
345 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
346 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
347 as keyword arguments no longer accidentally match unevaluated symbols
349 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
350 parameter was zero, now it signals an error. (lp#905817, fixed since
352 * bug fix: run-program with :pty t no longer makes the pty as the process's
354 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
357 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
358 * RANDOM enhancements and bug fixes:
359 ** bug fix: the range and distribution of random integers could be
360 catastrophically wrong when the compiler derived the type of its
361 argument as a disjoint set of small integers.
362 ** bug fix: the distribution of random integers is now completely
363 uniform even when the specified limit is not a power of two.
364 (Previously some values could be about 0.1 % more probable than
365 others in the worst case.) (lp#309467)
366 ** RANDOM on large integer arguments is generally faster and conses
367 less than before; this is visible for fixnums above a length of
368 about 24 bits, but extremely so for bignums: the old implementation
369 used time and space quadratical in the size of the argument there,
370 the new one is linear.
371 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
372 main entry point, SB-EXT:QUIT is deprecated.
373 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
374 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
375 * enhancement: FASL loading no longer grabs the world-lock.
376 * enhancement: GENCGC reclaims space more aggressively when objects being
377 allocated are a large fraction of the total available heap space.
379 * enhancement: backtraces show the correct number of arguments for frames
380 called with too many arguments.
381 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
383 * enhancement: ASDF has been updated 2.21.
384 * optimization: fewer uses of full calls to signed modular functions.
386 * optimization: typechecking alien values is typically 5 x faster.
387 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
389 * bug fix: file compilation performance issues when dumping subtypes
390 of CHARACTER (lp#994487)
391 * bug fix: fixed disassembly of some SSE instructions on x86-64.
392 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
393 OPEN. (lp#969352, thanks to Kambiz Darabi)
394 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
396 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
397 classoid even if X was not the proper name of the class. (lp#941102)
398 * bug fix: declaration leakage between lexical environments due to careless
399 use of NCONC in MAKE-LEXENV. (lp#924276)
400 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
401 *default-pathname-defaults* contains NAME or TYPE components.
402 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
403 from CL package, e.g. (loop . 10).
404 * bug fix: run-program with existent or non-existent files for :output or
405 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
406 returns NIL instead of signalling an obscure error.
407 * bug fix: fix miscompilation of some logand forms with large constant
408 arguments. (lp#974406)
409 * bug fix: account for funcallable-instance objects properly in ROOM.
410 * bug fix: incorrect octets reported for c-string decoding errors.
412 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
414 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
415 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
416 allowing faster release of memory back to the OS. (lp#991293)
417 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
418 existing deadline for the dynamic scope of its body.
419 * bug fix: compiler-internal interval arithmetic needed to be more
420 conservative about open intervals when operated on by monotonic but not
421 strictly-monotonic functions. (lp#975528)
422 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
423 it's also slightly faster. (lp#998926)
424 * bug fix: better error messages for malformed declarations.
426 * bug fix: define-condition didn't return the name of the defined condition.
428 ** improved docstrings: REPLACE (lp#965592)
430 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
431 * bug fix: fix copy-structure. When copying from stack to heap, garbage
432 could end up in the heap making GC unhappy.
433 (Thanks to James Knight, lp#911027)
435 ** SBCL can now be built using Clang.
436 ** ASDF has been updated 2.20.
437 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
438 * bug fix: don't complain about a too-hairy lexical environment for inlining
439 when the function has never been requested for inlining. (lp#963530)
441 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
442 * enhancements to building SBCL using make.sh:
443 ** --fancy can be specified to enable all supported feature enhancements.
444 ** --with-<feature> and --without-<feature> can be used to specify
445 which features to build with.
446 ** --arch option can be used to specify the architecture to build for.
447 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
448 full-blows cross-compilation.)
449 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
450 which allows specifying name of the default interning package for the
452 * enhancement: when *READ-EVAL* is true, arrays with element type other than
453 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
454 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
455 null alien when malloc() fails. (lp#891268)
456 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
457 conditions can be conveniently accessed through function with the same
458 name, analogously to CONTINUE.
459 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
460 from the printer by type, causing an error marker to be printed instead.
461 (Thanks to Attila Lendvai)
462 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
463 generally behave better when errors occur during printing.
464 * enhancement: the test runner now takes a --report-skipped-tests argument
465 to report the individual tests skipped as well as the number of skipped
467 * enhancement: undefined functions now appear in backtraces as ("undefined
468 function") instead of ("bogus stack frame") on x86oids.
469 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
470 deadlock errors are reported in an easier-to-decipher manner.
471 * enhancement: DESCRIBE on type designators reports the expansion in more
473 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
474 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
475 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
476 * enhancement: better disassembly of segment-prefixes on x86 and other
477 instruction prefixes (e.g. LOCK) on x86 and x86-64.
478 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
479 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
480 * optimization: SUBSEQ on vectors of unknown element type is substantially
482 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
483 be stack-allocated. (lp#902351)
484 * optimization: the compiler is smarter about representation selection for
485 floating point constants used in full calls.
486 * optimization: the compiler no longer refuses to coerce large fixnums to
487 single floats inline, except on x86 where this limitation is still
489 * optimization: truncation operations on integers with constant divisor
490 arguments 1 and -1 are optimized away.
491 * bug fix: deadlock detection could report the same deadlock twice, for
492 two different threads. Now a single deadlock is reported exactly once.
493 * bug fix: interval-arithmetic division during type derivation did not
494 account for signed zeros.
495 * bug fix: compiler error when typechecking a call to a function with
496 non-constant keyword arguments.
497 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
498 * bug fix: condition slot accessors no longer cause undefined function
499 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
500 form that defines them. (lp#896379)
501 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
503 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
504 bogusly report NIL, T.
505 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
506 required arguments ignored and performed assignments to others.
508 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
509 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
510 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
511 * bug fix: redefining a function whose previous definition contained an
512 unknown type no longer causes a style-warning. (lp#806243)
513 * bug fix: undefined functions now appear in backtraces as ("undefined
514 function") instead of ("bogus stack frame") on non-x86oids.
515 * bug fix: backtraces are no longer cut off at ("undefined function") when
516 called under certain circumstances (involving a caller-allocated stack
518 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
519 systems. (regression since 1.0.53)
520 * bug fix: GC deadlocks from dladdr() on certain platforms.
521 * bug fix: broken standard streams no longer automatically cause recursive
522 errors on debugger entry.
523 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
524 (regression since 1.0.53)
525 * bug fix: attempts to stack allocate a required argument to a function with
526 an external entry point caused compiler-errors.
527 * bug fix: compiler notes for failed stack allocation for a function argument
528 no longer claim to be unable to stack allocate the function.
529 * bug fix: COERCE now signals a type-error on several coercions to
530 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
531 * bug fix: missing failure-to-stack-allocate compiler notes for some
532 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
533 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
535 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
537 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
538 * minor incompatible changes:
539 ** RENAME-FILE on a symbolic links used to rename the linked-to file
541 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
542 directory, but now signal an error instead. Use TRUENAME to resolve the
543 pathname if you wish to delete the linked directory, and DELETE-FILE if
544 you wish to delete the
545 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
546 symbols associated with it will trigger a compile-time warning.
547 * thread-related enhancements:
548 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
549 Many thanks to generous donors!)
550 ** Threading is now more reliable on non-Linux platforms. We still don't
551 consider threads on non-Linux platforms good enough to enable them by
552 default, but they're in a clearly better shape now.
553 ** Deadlines supported now on all platforms.
554 ** All blocking functions in the threading API now have a :TIMEOUT
556 ** Semaphore notification objects have been added to SB-THREAD.
557 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
558 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
559 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
560 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
561 using an API anologous to defining new SETFable places.
562 * GC-related enhancements and bug fixes:
563 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
564 and Gb suffixes. Default is megabytes as before.
565 ** on GENCGC targets, the default dynamic space size is now 512Mb for
566 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
567 exception, defaulting to mere 444Mb to fit under default ulimits.) The
568 new defaults are in place to prevent hitting swap on low-end systems.
569 Use build-time option --dynamic-space-size to build an SBCL with
570 another default, or the runtime option to adjust the size at startup: a
571 good size is at most equal to the amount of physical memory the system
573 ** on GENCGC targets, nursery and generation sizes now default to 5% of
575 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
576 refuses to create SIMPLE-FUN objects.
577 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
579 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
580 validation of pointer objects as GENCGC does, instead of a
581 comparatively weak bounds-check against the heap spaces.
582 * SB-BSD-SOCKETS bug fixes:
583 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
584 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
585 systems with getaddrinfo().
586 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
587 safe outside systems with getaddrinfo().
588 * enhancement: ASDF has been updated 2.019.
589 * enhancement: special-case TCO prevention for functions which never return
590 extended to untrusted types, keeping one more frame's worth of debug
591 information around in many cases.
592 * enhancement: debug-names of anonymous and local function are more
593 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
594 * enhancement: on win32, ABS of complex floats guards better against
595 overflows. (lp#888410)
596 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
597 process exiting with code 1. (lp#676987)
598 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
599 the system where on the filesystem the SBCL sources themselves are
600 located. (Thanks to Zach Beane)
601 * enhancement: the compiler is now able to derive tighter bounds for
602 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
603 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
604 correctly, even on wide-fixnum builds. (lp#887220)
605 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
606 resolved to directories.
607 * bug fix: type mismatch when assigning to lexical variables no longer
608 result in fasl-dumping internal type objects. (lp#890750)
609 * bug fix: type mismatch on (SETF AREF) and function return values no
610 longer result in fasl-dumping internal type objects.
611 * bug fix: With several combinations of argument types, for example (EXPT
612 <integer> <(complex double)>), EXPT now uses double-precision throughout
613 instead of partially calculating only to single-precision. (lp#741564;
614 thanks to Lutz Euler)
615 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
616 objects when interrupted by GC on PPC.
618 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
619 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
620 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
621 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
622 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
623 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
624 targets is now 63 bits (up from 61).
625 * enhancement: DESCRIBE now reports a lambda-list and source location
626 for complext setf-expanders.
627 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
628 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
629 of multiple-valued places to be set to NIL, instead of signalling an
630 error (per a careful reading of CLHS 5.1.2.3).
631 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
632 * bug fix: repair crash in x86oid darwin signal handling emulation
633 when built with certain compilers.
634 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
635 rotation arguments on x86-64. (lp#882151)
636 * bug fix: low-level control flow optimisations could result in bogus
637 code in functions with tail and non-tail calls to local functions on
639 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
640 to emit literal characters > (code-char 4095), for comparisons with
642 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
643 on 64 bit platforms. (lp#881445)
644 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
645 delete the wrong file when using relative pathnames. (lp#882877)
646 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
647 sequences and :KEY NIL.
649 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
650 * enhancement: ASDF has been updated to version 2.017.
651 * enhancement: the --core command line option now accepts binaries with
653 * enhancement: when built with :sb-core-compression, core files (regular
654 or executable) can be compressed with zlib. Use the :COMPRESSION
655 argument to SAVE-LISP-AND-DIE to specify a compression level.
656 * enhancement: --[no-]merge-core-pages determines whether the runtime
657 hints the operating system that identical core pages between SBCL
658 processes should share the same physical memory. Default is to only
659 enable this for compressed cores.
660 * optimization: SLEEP no longer conses.
661 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
662 or bit-vectors when using the standard pretty-print dispatch table.
663 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
665 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
666 AREF, CHAR, etc. (lp#826971)
667 * bug fix: compiler-errors causes by integer arguments with composed of
668 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
669 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
670 expressions. (lp#770184)
671 * bug fix: complex single float literals are correctly aligned when used
672 as arguments of arithmetic operators.
673 * bug fix: on 32-bit platforms, rounding of double floats larger than a
674 fixnum is correct. (reported by Peter Keller)
675 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
676 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
678 * bug fix: redefining classes such that slots with custom allocation are
679 added or removed works again.
681 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
682 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
683 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
684 MAKE-SOCKET-STREAM if using SERVE-EVENT.
685 * enhancement: added support for socket keepalive timeout intervals
686 and probe counts on Linux.
687 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
688 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
689 * enhancement: added new toplevel options --quit and --non-interactive
691 * enhancement: the Windows port of SBCL now builds and runs on Wine
692 (thanks to Anton Kovalenko).
693 * enhancement: more, and more correct, SSE instruction definitions on
694 x86-64 (thanks to Alexander Gavrilov).
695 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
696 to help the processor execute spin loops, when applicable. Currently
697 implemented for x86 and x86-64.
698 * optimization: unsigned integer divisions by a constant are implemented
699 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
700 * optimization: improved type-derivation for LOAD-TIME-VALUE.
701 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
702 instructions. (lp#814688)
703 * bug fix: COERCE to unfinalized extended sequence classes now works.
704 (reported by Jan Moringen; lp#815155)
705 * bug fix: a compiler error during typecheck generation, reported by Eric
707 * bug fix: obsolete instance protocol fires when shared slots are added
709 * bug fix: fixed-format floating point printing with scaling factors.
711 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
712 backtraces. (lp#818460)
713 * bug fix: better backtraces for interrupted syscall frames on x86.
715 * bug fix: SSE comparison instructions can be disassembled even when one
716 operand is in memory. (lp#814702)
717 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
718 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
719 type information associated with the VALUES form.
720 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
722 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
723 first write (lp#561642).
724 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
725 * bug fix: bound propagation involving conversion of large bignums to
726 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
728 * bug fix: &REST to &MORE conversion still works in unsafe call to known
729 functions; reported by Lutz Euler (lp#826459).
730 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
733 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
734 * enhancement: errors from FD handlers now provide a restart to remove
735 the offending handler.
736 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
738 * enhancement: location of user or system initialization file can now easily
739 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
740 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
741 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
742 the thunk, as a keyword argument, :arguments.
743 * enhancement: constraint propagation is simplified (and sped up) when
744 COMPILATION-SPEED > SPEED.
745 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
746 * enhancement: debugger understands &MORE arguments better.
747 * optimization: extracting bits of a single-float on x86-64 has been
748 optimized. (lp#555201)
749 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
750 when (> SPEED SPACE).
751 * optimization: local call trampolines (x86 and x86-64) are emitted
753 * optimization: implicit value cells for dynamic-extent closed-over bindings
754 on x86 and x86-64 can hold unboxed values as well.
755 * meta-optimization: improved compilation speed, especially for large
756 functions. (lp#792363 and lp#394206)
757 * bug fix: bound derivation for floating point operations is now more
758 careful about rounding possibly closing open bounds. (lp#793771)
759 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
760 backwards incompatible change in 1.0.48.27)
761 * bug fix: occasional debugger errors in when a type-error occured in a
762 function with dynamic-extent &rest list.
763 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
764 boa-construtors can be used to initialized structure slots.
765 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
766 (lp#795705, regression)
767 * bug fix: DIRECTORY works better on logical pathnames.
768 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
769 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
770 * bug fix: the compiler no longer constant-folds NaNs in
771 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
772 * bug fix: FORMAT now handles floating point rounding correct, eg.
773 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
775 * bug fix: style warning during lambda-list introspection of generic
776 functions with both optional and key argments.
777 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
779 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
782 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
783 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
784 interrupts for its body.
785 * enhancement: source locations are now available for files loaded as
786 source, compile-time-too evaluation, and initialization files.
787 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
788 virtual source-file information, eg. overriding input-file of COMPILE-FILE
789 when a temporary file is used for compilation.
790 * enhancement: ASDF has been updated to version 2.015.3.
791 * enhancement: backtraces involving frames from the default evaluator are
793 * enhancement: RUN-PROGRAM works with user-defined binary input and output
795 * enhancement: more informative compile-time warnings and runtime errors for
796 type-errors detected at compile-time.
797 * enhancement: deadlock detection for mutexes and spinlocks.
798 * enhancement: dynamic-extent for &rest lists stack allocate only their
799 spines, not their argumets. While portable code should not rely on this,
800 particularly in combination with inlining, it should make dynamic-extent
801 easier to use safely.
802 * enhancement: SB-POSIX improvements:
803 ** WNOHANG and WUNTRACED are exported.
804 ** SYSCALL-ERROR now also provides the name of the failing system call.
805 * enhancement: --script improvements:
806 ** errors on standard input, output, and error streams are handled and
807 cause scripts to exit silently, making them easier to use in shell
809 ** backtraces from scripts now go to standard error instead of the
810 terminal even if one is available.
811 ** --script can be an argument, causing the script to be loaded from
813 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
814 strings to foreign memory.
815 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
816 a file, making it easier to understand heap dynamics.
817 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
818 allows the compiler to automatically elide rest-list allocation so long as
819 the call sites are in functions that the compiler knows cannot escape.
821 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
822 especially in safe code when none of the required arguments have changed
824 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
825 uninterruptible, as well as blocking reads from socket streams created
826 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
827 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
828 from the to-char if the from-char is not a dispatch-macro character.
829 * bug fix: references to undefined variables in function calls that are
830 optimized away now signal a runtime error. (lp#722734)
831 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
832 types from a function defined in the same file. (regression from
834 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
836 * bug fix: spurious errors during QUIT when standard streams were closed.
838 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
839 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
840 years, is now no longer supported.
841 * enhancement: read() and write() have been added to SB-POSIX.
842 * enhancement: types of DEFSTRUCT constructors are proclaimed more
843 accurately, allowing better typechecking of call-sites.
844 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
845 are no longer caught. (reverted to pre 1.0.34 behaviour)
846 * optimization: slightly faster ISQRT. (lp#713343)
847 * bug fix: better support for Solaris /bin/sh in sh-based tests.
848 * bug fix: TRACE behaves better when attempting to trace undefined
849 functions. (lp#740717)
850 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
851 to (FUNCALL #'(LAMBDA ...) ...).
852 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
853 a compile-time error. (lp#720382)
854 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
856 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
857 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
858 optimization. (regression from 1.0.45.18/1.0.46.15)
859 * bug fix: package locks did not protects against compile-time side-effects
860 of DEFUN. (lp#675584)
861 * bug fix: --dynamic-space-size argument is validated more carefully.
863 * bug fix: memory fault from printing a malformed simple-condition.
865 * bug fix: redefining classes so that slot-definition classes change now
866 engages the obsolete instance protocol. (lp#766271)
867 * bug fix: constant improper lists could break source coverage recording.
869 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
872 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
873 * bug fix: fix mach port rights leaks in mach exception handling code on
874 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
876 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
877 * enhancement: redefinition warnings for macros from different files. (lp#434657)
878 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
879 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
880 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
881 processed using EVAL -- now the appropriate toplevel form is reported instead.
882 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
883 declarations. (lp#726331)
884 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
885 that NIL/NULL is excluded from the type.
886 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
888 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
890 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
891 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
892 stack-allocated values out of their dynamic-extent. (lp#310175)
893 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
894 x86-64 builds caused a type-error.
895 * bug fix: calling COMPILE with something else than a lambda-expression as the
896 second argument reports a more sensible error. (lp#718905)
897 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
898 are detected. (lp#520607)
899 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
901 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
902 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
903 methods. (regression from 1.0.45.18)
904 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
905 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
906 * bug fix: several foreign functions accepting string also accepted NIL and
907 consequently caused a memory fault at 0 now signal a type-error instead.
909 * bug fix: under rare circumstances, constraint propagation could rewrite a
910 variable reference to refer to a variable not in scope, causing an error
911 during physical environment analysis when attempting to close over the
912 variable. (lp#551227)
913 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
915 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
916 * enhancement: largefile support on Solaris.
917 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
918 arguments (lp#710017)
919 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
920 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
922 * optimization: ERROR and CERROR are approximately 5 times faster.
923 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
924 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
925 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
926 up instance creation in those cases.
927 * optimization: arithmetic operations with multiple constant arguments in now
928 have them reduced at compile-time. (lp#676414)
929 * optimization: determining current character position on string-streams for
930 pretty-printing was overly slow.
931 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
932 lifetime analysis to overwrite closed-over variables (lp#681092).
933 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
934 were not handled correctly (lp#713063).
935 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
937 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
938 mistake. (lp#667297).
939 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
940 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
941 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
942 unintern the wrong symbol with the same name. (lp#693796)
943 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
944 making it possible to restore the initial table if it has been messed up.
947 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
948 * enhancement: ~/ and ~user/ are treated specially in pathnames.
949 Refer to documentation for details.
950 * enhancement: ASDF has been updated to version 2.010.
951 * optimization: mutated closed-over variables that are only accessed by
952 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
953 declared to be DYNAMIC-EXTENT) are stored directly in their containing
954 stack frame, rather than allocating a VALUE-CELL (lp#586103).
955 * optimization: UNWIND-PROTECT cleanup functions are now declared
957 * bug fix: backtracing function with &REST arguments now shows the full
958 argument list. (lp#310173)
959 * bug fix: return types for functions with complex lambda-lists are now
960 derived properly (lp#384892)
961 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
962 long string arguments slowed the compiler down to a crawl.
963 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
964 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
965 in the DEFMETHOD body.
966 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
967 messages, being instead replaced with the corresponding function name.
968 * bug fix: don't derive overly complex unions of numeric types for arithmetic
969 operators. (lp#309448)
971 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
972 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
973 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
974 * enhancement: ALLOCATION-INFORMATION also provides the page the object
976 * enhancement: default dynamic-space size can be configured at build-time
977 without touching source, using the --dynamic-space-size argument to make.sh.
978 * enhancement: DESCRIBE recognizes symbols naming optimization policy
979 qualities, and mentions ALWAYS-BOUND declarations.
980 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
982 * enhancement: ASDF has been updated to 2.009.
983 * enhancement: the system detects known type-erros in calls better,
984 signalling a full warning about violated proclaimed FTYPEs and violations
985 of derived FTYPEs within the same file, including self-calls.
986 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
987 * optimization: constant-folding exploits numeric and character types, in
988 addition member types.
989 * optimization: numeric, character and member types that are inhabited by
990 exactly one value are tested with EQL.
991 * optimization: more conditional branches are eliminated during IR1.
992 Branches are simplified before performing if/if-conversion, and simple
993 equivalent branches (that only read the same constant or variable) are
995 * improvements to the Windows port:
996 ** change: canonical unparsing form for pathname namestrings now uses / as
997 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
998 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
999 on Windows. (thanks to Kalyanov Dmitry)
1000 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
1002 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
1003 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
1004 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
1005 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
1007 * bug fix: interrupts arriving during CL:OPEN caused an error.
1008 * bug fix: overeager character buffering could cause input to block
1009 spuriously when reading from a pipe (lp#643686)
1010 * bug fix: more efficient timer expiry should avoid starvation on systems
1011 where number of SIGALRMs per second is restricted. (lp#375515)
1012 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
1013 * bug fix: compile-times no longer scale linearly with the size of
1014 quoted lists in source-code. (lp#654289)
1015 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
1016 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
1017 so badly. (lp#654485)
1018 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
1019 an error for eg. STRUCTURE. (lp#458015)
1020 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
1021 (lp#613871, thanks to Roman Marynchak)
1022 * bug fix: more reliable &REST list type derivation. (lp#655203)
1023 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
1024 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
1025 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
1026 also declared NOTINLINE. (lp#655581)
1027 * bug fix: the compiler could attempt to emit constant left shifts of
1028 greater value than n-word-bits. (lp#309063)
1029 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
1030 type information for the function being set. (lp#659220)
1031 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
1032 containing self-calls were recompiled with a new signature, and failed
1033 to warn when a self-call using the old signature was left in. (lp#655126)
1034 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
1035 :DEFAULT when the default external had character size other than 8 bits.
1037 * bug fix: derived types of functions in the same file were implicitly
1038 trusted, leading to potential heap corruption when those function were
1039 defined incompatibly. (lp#657499)
1040 * bug fix: existing ASDF source registries are ignored when building
1041 contribs (lp#659105)
1042 * bug fix: short-form DEFSETF checks that the second argument is a symbol
1043 (lp#655824, thanks to Roman Marynchak)
1044 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
1045 package-lock violation was detected. (lp#660752)
1046 * bug fix: the system can store different docstrings for a single function
1047 under different names. (lp#661631, regression from 1.0.29.24)
1048 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
1049 properly. (lp#384801)
1050 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
1051 of specified length could confuse the type derivation in unsafe code.
1053 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1054 fork with multiple Lisp threads running is made on every platform,
1055 not just Darwin. (lp#451111)
1056 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1057 around when core was saved, which could cause undefined behaviour when the
1059 * bug fix: Allow UNTRACE of functions that are no longer defined
1060 (lp#667657, thanks to Attila Lendvai)
1061 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1062 compile-time warning (lp#664373, thanks to Stas Boukarev)
1064 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1065 * incompatible change: FD-STREAMS no longer participate in the serve-event
1066 event-loop by default. (lp#316072)
1067 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1068 affects streams from CL:OPEN.
1069 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1070 default, but this is liable to change: applications needing serve-event
1071 for socket streams should explicitly request it using :SERVE-EVENTS T
1073 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1075 * enhancement: CLOS effective method functions and defclass slot typechecking
1076 function now have debug names for use in backtraces and profiles.
1077 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1079 * enhancement: symbols are printed using fully qualified names in several
1080 error and warning messages which are often associated with package
1081 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1082 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1083 thanks to Andrew Golding)
1084 * bug fix: reading /proc files on Linux works. (lp#425199)
1085 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1087 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1088 breaking code that tried to write the value of a printer control variable.
1089 (lp#581564, thanks to Stas Boukarev)
1090 * bug fix: WRITE compiler macro did not handle output stream designators
1091 correctly. (lp#598374, thanks to Stas Boukarev)
1092 * bug fix: better availability of names of foreign functions in backtraces
1093 on Linux. (lp#626962, thanks to Stas Boukarev)
1094 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1095 lp#627581, thanks to Josh Elsasser and Jim Wise)
1096 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1097 thanks to Josh Elsasser)
1098 * bug fix: using aliases for builtin classes as defmethod specializers
1099 without adding DEFTYPEs for them works. (lp#618387)
1100 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1102 * bug fix: legally dynamic-extent lists and vectors used as
1103 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1104 * bug fix: inline-expansion creating references to dead lambda-variables
1105 (lp#454681, thanks to Alexey Dejneka)
1106 * bug fix: better error message for bogus numerical arguments to RANDOM.
1107 (lp#598986, thanks to Stas Boukarev)
1108 * bug fix: the compiler occasionally inlined references from incompatible
1109 environments occurs. (lp#308951)
1110 * bug fix: the compiler threw an error when trying to compile a local
1111 function (labels or flet) known to take a specialized complex argument.
1112 (not in launchpad, reported by sykopomp in #lispgames)
1113 * bug fix: package-locks failed to protect against compile-time effects of
1114 DEFUN when the symbol previously had a macro definition. (lp#576637)
1115 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1116 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1117 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1118 * bug fix: evaluation in debugger REPL works using the global context when
1119 in frames that do not have sufficient debug information.
1120 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1122 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1124 * bug fix: interrupt taking longer than the requested period caused SLEEP
1125 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1127 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1129 ** Cross-compilation host is now specified to make.sh using
1130 command-line argument --xc-host=<command> instead of a positional
1131 argument. (thanks to Daniel Herring)
1132 ** Install location can be specified to make.sh using command-line
1133 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1134 * optimization: The default implementation of
1135 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1136 * enhancement: Explicit memory barrier operations are now available for use
1137 by multithreaded code. See documentation for details.
1138 * enhancement: Experimental support for threading on Linux/PPC.
1139 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1140 * bug fix: EXPT signals an error if first argument is a zero and second
1141 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1142 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1143 (lp#576594, thanks to Roman Marynchak)
1144 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1145 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1147 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1148 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1149 cached, leading to many fewer expensive calls to
1150 COMPUTE-APPLICABLE-METHODS.
1151 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1152 CLASS argument, search for and call an appropriate optimized ctor function
1154 * bug fix: WRITE always returns the correct value.
1156 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1157 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1158 * bug fix: Name conflicts between symbols passed as arguments to a single
1159 call to IMPORT no longer add multiple symbols with the same name to the
1160 package (detectable via DO-SYMBOLS).
1161 * bug fix: support building without the dlshim on darwin x86 and x86-64
1163 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1165 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1166 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1168 * bug fix: linkage-table entries on PPC now no longer overflow their
1169 space allocation (potentially causing crashes if they are written out
1171 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1172 platforms, preventing the GC from seeing stale pointers on the control
1173 stack in subsequent GCs (which would, and does, break invariants).
1174 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1175 * bug fix: Literal characters with code points greater than about 32767
1176 now work on PPC UNICODE builds.
1177 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1178 high order bits are explicitly cleared out. In some contrived situations,
1179 this could lead to wrong results in mixed real/complex float arithmetic.
1180 * bug fix: Fix function/macro redefinition warnings when building with
1181 clisp. (lp#576787, thanks to Josh Elsasser)
1182 * new platform: experimental support for ppc/openbsd (thanks to Josh
1184 * bug fix: Floating-point traps now work on ppc/linux.
1186 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1187 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1188 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1189 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1190 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1191 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1192 SB-THREAD:GRAB-MUTEX.
1193 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1194 contain additional data structures and tools for concurrent programming;
1195 at the moment it contains a lock-free queue, and a lock-free mailbox
1197 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1198 GET-MUTEX but takes &key rather than &optional parameters. Also added
1199 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1201 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1202 SB-THREAD:WAIT-ON-SEMAPHORE.
1203 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1205 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1206 conditions to defer the deadline for forever.
1207 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1209 * enhancement: errors from NO-APPLICABLE-METHOD and
1210 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1211 generic function call.
1212 * enhancement: SB-BSD-SOCKET improvements
1213 ** sockets and socket streams now have a more informative printed
1214 representation based on the corresponding SOCKET-NAME and
1216 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1218 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1219 CL:CLOSE when appropriate, and no longer disassociates the stream
1220 from the socket if close failed. (lp#543951)
1221 * improvements to the instrumenting profiler
1222 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1223 ** optimization: counters no longer use locks for the overflow mode.
1224 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1225 incurred an off-by-one miscount.
1226 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1227 * enhancement: improved DEFMETHOD pretty-printing.
1228 * enhancement: perform range reduction when arguments are too large for
1229 x87's transcendentals (instead of returning 0). (lp#327192)
1230 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1231 some of CL-PPCRE's macros. (lp#570079)
1232 * enhancement: our machine code is slightly less hostile to valgrind on
1234 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1235 to Robert Swindells and Aleksej Saushev)
1236 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1237 * bug fix: a rare case of startup-time page table corruption.
1238 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1239 to timeouts could be left in an inconsistent state.
1240 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1241 * bug fix: misoptimization of multiplication by one in
1242 (SB-C::FLOAT-ACCURACY 0) policies.
1243 * bug fix: miscounts in SB-PROFILE.
1244 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1245 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1246 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1247 up itself" (March 2010) for further details.
1248 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1249 against length of the list if the element is found before the specified
1250 END is reached. (thanks to Alec Berryman, lp#554385)
1251 * bug fix: errors signalled during package graph modification no longer
1252 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1253 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1254 :SB-DOC feature. (lp#552564)
1255 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1256 * bug fix: more robust runtime executable path detection. (lp#375549)
1257 * bug fix: GCD always returns positive values. (lp#413680)
1258 * bug fix: Converting division to multiplication by reciprocal handles
1260 * bug fix: We were too eager in eliding range reduction tests on x87.
1261 The maximal magnitude is 2^63, not 2^64.
1262 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1264 * bug fix: Maybe restore buildability on Alpha.
1265 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1267 * bug fix: RANDOM-STATE can be printed readably again.
1268 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1269 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1270 types) could result in type mismatches during compilation.
1272 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1273 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1274 stack frame thrown from.
1275 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1276 compiler optimization qualities inside dynamic extent of its body.
1277 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1278 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1280 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1281 constraint propgation, allowing better compilation eg. when used to
1282 access structures with WITH-SLOTS. (lp#520366)
1283 * optimization: the compiler is now more aware of the type of the underlying
1284 storage vector for multidimensional simple arrays resulting in better code
1285 for accessing such arrays.
1286 * optimization: passing NIL as the environment argument to TYPEP no longer
1287 inhibits optimizing it. (lp#309788)
1288 * optimization: more efficient register usage when handling single-float
1289 arguments on x86-64. (thanks to Lutz Euler)
1290 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1291 pre-allocated temporary vectors. (lp#496249)
1292 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1293 in :INITIAL-CONTENTS. (lp#523612)
1294 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1295 functions. (lp#524707)
1296 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1297 WITH-SLOTS usages during compilation.
1298 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1299 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1300 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1301 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1302 instruction (tested on x86oid linux with ud2-breakpoints).
1303 * bug fix: slam.sh now works on win32.
1304 * bug fix: better differences of numeric types. (lp#309124)
1305 * bug fix: arrays declared intersection and union types can have their
1306 upgraded element type derived. (lp#316078)
1307 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
1308 threads started during profiling. (lp#472499)
1309 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
1311 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
1312 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
1313 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
1314 values instead of signaling an error. (lp#309093)
1315 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
1317 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
1318 declarations (lp#497321)
1319 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1320 and failed to detect circular lists (lp#452008)
1321 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1323 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1324 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1325 due to it, so that handlers can run.
1326 * bug fix: reparsing undefined types if they have become defined since
1327 parsing. (lp#309128)
1328 * bug fix: missing &REST type in a proclamation for a function with both
1329 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1330 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1331 expanded calls (lp#542174)
1332 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1333 than just at toplevel form.
1335 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1336 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1337 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1338 but work on type specifiers.
1339 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1340 to name a type specifier.
1341 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1342 specifier is valid where "valid" basically means "would be accepted as
1343 second argument of TYPEP".
1344 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1345 returns the function's declared, or derived FTYPE.
1346 * new feature: SB-POSIX now supports accessing the d_ino member of
1347 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1348 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1349 provide for seeding a RANDOM-STATE object with user-provided data or
1350 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1351 attempt to initialize the returned state from the operating system's
1352 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1353 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1354 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1355 * bug fix: Fix grammar and style issues for the docstrings of
1356 printer-related variables and functions. (Thanks to mon_key; launchpad
1358 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1360 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1361 in a row even though a handler defered the deadline long into the
1363 * bug fix: A deadline handler was run without interrupts enabled for a
1364 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1365 in infinitely spinning, non-killable threads.
1366 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1367 before reaching the erring stack frame.
1368 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1369 real power. (launchpad bug lp#525949)
1370 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1371 GENCGC platforms. (launchpad bug lp#529014)
1372 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1373 (launchpad bug lp#525916)
1374 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1375 (Thanks to Robert Goldman)
1377 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1378 * optimization: ROUND with a single single-float or double-float argument
1379 is properly inlined when possible.
1380 * optimization: Slightly better code is generated for integer<->float
1381 conversions and for single-float<->double-float conversions on x86-64.
1382 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1383 code for 32-bit and 64-bit rotations on x86-64.
1384 * bug fix: The install script changes the ownership of directories as well
1385 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1386 launchpad bug lp#508485)
1387 * bug fix: TRUNCATE with a single single-float or double-float argument is
1388 properly inlined when possible. (launchpad bug lp#489388)
1389 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1390 no longer causes a compiler error on x86 and ppc.
1391 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1392 always relative to *READTABLE* rather than the passed argument.
1394 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1395 * minor incompatible change: threading support is now enabled by default
1397 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1399 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1400 are now caught and reported just like errors during macroexpansion.
1401 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1402 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1403 * enhancement: ASDF systems can now depends on SB-QUEUE.
1404 * fixes and improvements related to Unicode and external formats:
1405 ** bug fix: error handling and restart usage in the ucs-2 external format
1407 ** there is now an implementation of the ucs-4 external format.
1408 ** the utf-16 and utf-32 external formats are supported.
1409 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1410 in the environment. setenv() and unsetenv() are also provided. (reported by
1411 Fare Rideau; launchpad bug lp#460455)
1412 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1413 loading. This ensures sensible errors for .FASL files from other
1414 implementations on case-insensitive filesystems. (reported by Willem
1415 Broekema; launchpad bug lp#489417)
1416 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1417 Willem Broekema; launchpad bug lp#489698).
1418 * bug fix: some minor code rearrangements to reenable warning-free building
1419 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1420 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1422 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1425 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1426 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1427 * improvement: support O_LARGEFILE access to files larger than 2GB on
1428 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1429 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1430 definitions for methods specializing on the passed class itself.
1431 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1432 definitions for methods specializing on the passed class itself, or on
1434 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1435 about itself during the build (e.g. for M-? in Slime), if this flag is
1436 enabled in customize-target-features.lisp. This will increase the core
1437 size by about 5-6mb, though, so it's mostly interesting to SBCL
1439 * new feature: various GENCGC tuning parameters have been experimentally
1440 documented and exported from SB-EXT. See documentation for details.
1441 * fixes and improvements related to Unicode and external formats:
1442 ** the Unicode character database has been upgraded to the
1443 Unicode 5.2 standard, giving names and properties to a number of new
1444 characters, and providing a few extra characters with case
1446 ** improvement: restarts for providing replacement input/output on coding
1447 errors for fd-stream external formats.
1448 ** improvement: where :<encoding> is a keyword corresponding to an
1449 external format the system supports, it is now possible to specify
1450 (:<encoding> :replacement <character>) as an external format which will
1451 automatically substitute <character> on encoding or decoding errors for
1452 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1454 ** improvement: the file streams underlying the standard streams (such as
1455 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1456 which uses the replacement mechanism to handle encoding errors,
1457 preventing various infinite error chains and unrecoverable I/O
1459 ** minor incompatible change: the utf-8 external format now correctly
1460 refuses to encode Lisp characters in the surrogate range (char-codes
1461 between #xd800 and #xdfff).
1462 ** fix a typo preventing conversion of strings into octet vectors
1463 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1465 ** fix a bug in the octet multibyte handling of decoding errors and the
1466 USE-VALUE restart. (launchpad bug lp#314939)
1467 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1468 restart on fd-stream decoding errors.
1469 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1470 error is near the end of file.
1471 ** fix a double-error case in unibyte octet conversions, when the first
1472 use of USE-VALUE is ignored.
1473 ** fix bugs in handling of undefined code points in unibyte encodings.
1474 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1475 streams after an UNREAD-CHAR.
1476 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1477 object is allocated in a boxed region of dynamic space.
1478 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1479 fork with multiple Lisp threads running is made, instead of going
1480 ahead with unpredictable consequences. (reported by Leslie Polzer)
1481 * bug fix: uses of slot accessors on specialized method parameters within
1482 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1483 error while finalizing the class. This fix may cause classes with slot
1484 accessors to be finalized later than previously. (reported by Lars Rune
1485 Nøstdal; launchpad bug lp#473699)
1486 * bug fix: restore buildability on the MIPS platform. (regression from
1487 1.0.30.38, reported by Samium Gromoff)
1488 * bug fix: inspecting closures is less likely to fail with a type error.
1489 * bug fix: no timer starvation when setting the system clock back.
1490 (launchpad bug lp#460283)
1491 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1492 standard pprint dispatch table as specified by CLHS.
1493 * bug fix: give CLISP a hint about a type declaration to enable it to build
1494 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1496 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1497 (reported by Attila Lendvai; launchpad bug lp#310132)
1498 * bug fix: distinguish in type specifiers between arrays that might be
1499 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1500 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1501 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1502 * bug fix: setting the value of a symbol-macro within a method in the
1503 presence of type declarations works properly again. (reported by Iban
1504 Hatchondo; launchpad bug lp#485019)
1506 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1507 * optimization: faster FIND and POSITION on strings of unknown element type
1508 in high SPEED policies. (thanks to Karol Swietlicki)
1509 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1511 * improvement: better error signalling for bogus parameter specializer names
1512 in DEFMETHOD forms (reported by Pluijzer)
1513 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1515 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1517 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1518 removes previous default initargs (reported by Lars Rune Nøstdal and
1520 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1521 lambda-lists. (reported by Peter Seibel)
1522 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1523 correctly when starting from an executable core without saved runtime
1524 options (reported by Faré Rideau, thanks to Zach Beane)
1525 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1526 an optimization note instead. (reported by Martin Cracauer)
1527 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1528 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1529 new process group if it doesn't need to share stdin with the sbcl
1530 process. (thanks to Leslie Polzer)
1531 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1532 (reported by Stanislaw Halik)
1534 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1535 * improvement: stack allocation is should now be possible in all nested
1536 inlining cases: failure to stack allocate when equivalent code is manually
1537 open coded is now considered a bug.
1538 * improvements related to Unicode:
1539 ** the Unicode character database has been upgraded to the
1540 Unicode 5.1 standard, giving names and properties to a number of new
1541 characters, and providing a few extra characters with case
1543 ** the system now recognizes and produces names for Unicode Hangul
1544 syllable characters.
1545 ** the EBCDIC-US external-format is now supported for octet operations
1546 (as well as for stream operations).
1547 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1548 be used to output toplevel compile-time effects into a separate .CFASL
1550 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1551 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1553 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1555 * optimization: division of floating point numbers by constants uses
1556 multiplication by reciprocal when an exact reciprocal exists.
1557 * optimization: multiplication of single- and double-floats floats by
1558 constant two has been optimized.
1559 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1560 sufficient type information is available. (thanks to Leslie Polzer)
1561 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1562 known structure objects are as efficient as defstruct generated accessors.
1563 * optimization: unused vector creation can now be optimized away.
1564 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1565 * improvement: a STYLE-WARNING is signalled when a generic function
1566 clobbers an earlier FTYPE proclamation.
1567 * improvement: the compiler is able to track the effective type of
1568 generic function across method addition and removal even in the
1569 absence of an explicit DEFGENERIC.
1570 * improvement: DESCRIBE now reports on symbols naming undefined
1571 but assumed or declared function as well.
1572 * improvement: recompilation of systems using SB-GROVEL now works
1573 (thanks to Leslie Polzer)
1574 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1575 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1577 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1578 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1579 well as user defined declaration names.
1580 ** VARIABLE-INFORMATION is now aware of alien variables.
1581 * improvement: improved address space layout on OpenBSD (thanks to Josh
1583 * improvement: pretty-printing of various Lisp forms has been improved
1584 (thanks to Tobias Rittweiler)
1585 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1586 unused were deleted in safe code. (reported by John Fremlin)
1587 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1589 * bug fix: some out-of-line array predicates were missing (reported by
1591 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1593 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1594 (thanks to Larry D'Anna)
1595 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1596 as well. (reported by Josh Elsasser)
1597 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1598 leading to possible attempts to delete the same file twice. See docstring
1599 on DELETE-FILE for details. (reported by John Fremlin)
1600 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1601 designator argument, rather than its truename. (reported by Luis
1603 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1604 information about some array types. (thanks to Luis Oliveira)
1605 * bug fix: moderately complex combinations of inline expansions could
1606 be miscompiled if the result was declared to be dynamic extent.
1607 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1608 form (+ <variable> <integer>) were miscompiled under certain
1610 * bug fix: in some cases no compiler note about failure to stack allocate
1611 was emitted, even if the objects were in fact heap allocated.
1612 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1613 allocation could cause objects users might reasonably expect to
1614 be heap allocated to be stack allocated.
1615 * bug fix: DESCRIBE signalled an error for generic functions under
1616 certain circumstances. (thanks to Leslie Polzer)
1617 * bug fix: Fixed spelling of an error message.
1619 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1620 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1621 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1622 of SB-THREAD:THREAD-ERROR-THREAD.
1623 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1624 * new feature: docstrings for local and anonymous functions are no longer
1625 discarded. (thanks to Leslie Polzer)
1626 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1627 values in other threads.
1628 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1629 about object allocation.
1630 * optimization: division of a real float by a complex float is implemented
1631 with a specialised code sequence.
1632 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1633 keywords is an order of magnitude faster.
1634 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1635 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1636 methods, and similarly for non-standard metaclass classes as long as there
1637 are no methods additional on MAKE-INSTANCE.
1638 * optimization: more efficient type-checks for FIXNUMs when the value
1639 is known to be a signed word on x86 and x86-64.
1640 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1641 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1643 * optimization: compiler is smarter about delegating argument type checks to
1645 * optimization: several character functions are now compiled somewhat more
1646 efficiently. (reported by Lynn Quam)
1647 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1648 * improvement: less unsafe constant folding in floating point arithmetic,
1649 especially for mixed complex/real -float operations.
1650 * optimization: constant double and single floats are stored in native
1651 unboxed format on x86[-64].
1652 * optimization: smarter code for arithmetic operations with constant floats,
1653 complex floats, or integers on x86[-64].
1654 * optimization: smarter code for conjugate/multiplication of float complexes
1655 and abs/negate of floats on x86-64.
1656 * optimization: more efficient complex float and real float operations on
1658 * improvement: complex float division is slightly more stable.
1659 * improvement: DESCRIBE output has been reworked to be easier to read and
1660 contains more pertinent information.
1661 * improvement: failure to provide requested stack allocation compiler notes
1662 provided in all cases (requested stack allocation not happening without a
1663 note being issued is now considered a bug.)
1664 * bug fix: SB-POSIX exports the documented types and functions
1665 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1666 types. (reported by "abhi")
1667 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1668 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1669 (thanks to Paul Khuong)
1670 * bug fix: looping around HANDLER-CASE could silently consume stack space
1671 on each iteration. (reported by "foobar")
1672 * bug fix: better error signalling when calls to functions seeking elements
1673 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1674 (reported by Tobias Rittweiler)
1675 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1676 directory components now works as it used to. (various prolems reported by
1677 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1678 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1679 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1680 * bug fix: bogus undefined variable warnings from fopcompiled references to
1681 global variables. (thanks to Lars Rune Nøstdal)
1682 * bug fix: foreign function names should now appear in backtraces on
1683 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1684 * bug fix: SETF compiler macro documentation strings are not discarded
1686 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1687 (thanks to Alex Plotnick)
1688 * bug fix: SLEEP accepts large integer arguments, truncating them to
1689 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1690 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1691 * bug fix: compiler notes for expensive slot type checks could be emitted
1692 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1694 changes in sbcl-1.0.29 relative to 1.0.28:
1695 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1696 https://bugs.launchpad.net/sbcl
1697 Bugs can be reported directly there, or by sending email to
1698 sbcl-bugs@lists.sourceforge.net
1699 (no subscription required.)
1700 * minor incompatible change: under weak type checking policy integer
1701 types are weakened less aggressively.
1702 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1703 allowed to return, which causes SBCL to quit with exit status 0. Previously
1704 if the function returned with a small integer return value, that value
1705 was accidentally reused as the exit status.
1706 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1707 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1708 :HASH-FUNCTION argument. Refer to user manual for details.
1709 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1711 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1712 microseconds since the Unix epoch on all platforms.
1713 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1714 allows the compiler to safely elide boundedness checks for special
1716 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1717 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1718 efficiency measure for threaded platforms, but also valueable in
1720 * new feature: UNC pathnames are now understood by the system on Windows.
1721 * optimization: the compiler uses a specialized version of FILL when the
1722 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1724 * optimization: accesses to potentially non-simple arrays where element type
1725 is known are 50% faster.
1726 * optimization: compiler now generates faster array typechecking code.
1727 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1729 * optimization: multidimensional array accesses in the absence of type
1730 information regarding array rank are approximately 10% faster due to
1731 open coding of ARRAY-RANK.
1732 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1733 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1735 * optimization: result of call to VECTOR can now be stack allocated.
1736 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1737 as long as the resulting array is one-dimensional and has a known
1738 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1739 length of the list matches the known length of the vector does not
1740 allocate the list as an intermediate step. Ditto for VECTOR and simple
1742 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1743 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1744 known element type, and is known to be simple and one dimensional.
1745 * improvement: SBCL now emits a compiler note where stack allocation was
1746 requested but could not be provided (not in all cases, unfortunately)
1747 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1748 * improvement: pretty-printing loop has been implemented properly. (thanks
1749 to Tobias Rittweiler)
1750 * documentation: CLOS slot typechecing policy has been documented.
1751 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1752 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1753 pointer, leading to memory faults. (thanks to Bart Botta)
1754 * bug fix: better floating point exception handling on x86/OpenBSD.
1755 (thanks to Josh Elsasser)
1756 * bug fix: exit status from QUIT when called under --script was lost
1757 (reported by Hubert Kauker)
1758 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1759 same implementation of FILL to initialize the array, even if a more
1760 efficient one was available (reported by Stas Boukarev, thanks to
1762 * bug fix: potential miscompilation of array stack allocation on x86 and
1763 x86-64. (reported by Time Tossavainen)
1764 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1765 result in their subforms being treated as top level forms. (reported by
1767 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1768 than a machine register could leave garbage in the high bits of the
1769 result register (bug 316325).
1770 * bug fix: disable address space randomization Linux/x86-64 as well,
1771 not just x86-64. (reported by Ken Olum)
1772 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1773 generate incorrect code.
1774 * bug fix: #201; type inference for CONS and ARRAY types could derive
1775 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1776 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1777 could not be assigned to or bound with PROGV. (reported by Lorenz
1779 * bug fix: the value of CL:- in the inspector was the previous expression
1780 evaluated rather than the expression being evaluated.
1781 * bug fix: constants can no longer be locally declared special.
1782 * bug fix: signals delivered to threads started from foreign land (read:
1783 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1784 thread by blocking all signals and resignalling.
1785 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1786 from :INITFORM, if any.
1788 changes in sbcl-1.0.28 relative to 1.0.27:
1789 * a number of bugs in cross-compilation have been fixed, with the ultimate
1790 result that building under (at least) clisp should be much more reliable.
1791 * minor incompatible changes: echo-streams now propagate unread-char to the
1792 underlying input stream, and no longer permit unreading more than one
1794 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1795 frames, allowing for instance more reliable backtraces.
1796 * improvement: the debugger REPL can now reference lexical variables
1797 by name directly for code compiled with (DEBUG 3).
1798 * improvement: errors from malformed declarations now have better source
1799 paths associated with them. (thanks to Tobias Rittweiler)
1800 * optimization: faster local calls on x86/x86-64
1801 * bug fix: some error messages for out-of-bound array indexes confused the
1802 index and the bound. (thanks to Stas Boukarev)
1803 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1805 * bug fix: running regressions tests in shells without OSTYPE set now works.
1806 (reported by Harald Hanche-Olsen)
1807 * bug fix: more robust static space exhaustion signalling from
1808 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1809 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1810 docstring away instead of storing it under names such as (LAMBDA (X)).
1811 (reported by Leslie Polzer)
1812 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1813 (thanks to Ole Arndt for the patch)
1814 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1815 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1816 potentially-invalid effective methods in its cache.
1817 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1818 instances as well (thanks to Paul Khuong)
1819 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1820 SB-POSIX:WAITPID and their C equivalents.
1821 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1823 changes in sbcl-1.0.27 relative to 1.0.26:
1824 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1825 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1826 * improvement: the system either recovers from stack exhaustion or dies
1827 properly as opposed to leaving the user uncertain of whether the handler
1828 trampled on some random memory next to the stack or having to rely on
1829 --lose-on-corruption (which is still a good idea to use in production
1830 because stack exhaustion can happen in signal handlers which will likely
1832 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1833 1.0.25.37, reported by Harald Hanche-Olsen)
1834 * bug fix: work around signal delivery bug in darwin (regression from
1835 1.0.25.44, reported by Sidney Markowitz)
1836 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1838 changes in sbcl-1.0.26 relative to 1.0.25:
1839 * incompatible change: an interruption (be it a function passed to
1840 INTERRUPT-THREAD or a timer function) runs in an environment where
1841 interrupts can be enabled. The interruption can use
1842 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1843 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1844 potentially running out of stack. Keep in mind that in the absence
1845 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1846 acquiring a lock can enable interrupts.
1847 * incompatible change: GC-OFF and GC-ON are removed, as they were
1848 always unsafe. Use WITHOUT-GCING instead.
1849 * new feature: runtime option --disable-ldb
1850 * new feature: runtime option --lose-on-corruption to die at the
1851 slightest hint of possibly non-recoverable errors: running out of
1852 memory, stack, alien stack, binding stack, encountering a memory
1853 fault, etc. In the absence of --lose-on-corruption a warning is
1855 * enhancement: detect binding stack exhaustion
1856 * enhancement: detect alien stack exhaustion on x86/x86-64
1857 * improvement: generally more stable and reliable interrupt handling
1858 * improvement: there is a per thread interruption queue,
1859 interruptions are executed in order of arrival
1860 * improvement: a repeating timer reschedules itself when the it has
1861 finished, but expiration times are spaced equally. If an
1862 expiration time is in the past it will trigger after a short grace
1863 period that may give a chance to other things to run.
1864 * optimization: slightly faster gc on multithreaded builds
1865 * optimization: faster WITHOUT-GCING
1866 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1867 important locks so that the debugger/handler doesn't produce
1868 recursive errors or deadlock.
1869 * bug fix: real-time signals are not used anymore, so no more
1870 hanging when the system wide real-time signal queue gets full.
1871 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1873 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1874 * bug fix: fix random memory faults related to interrupts on alpha
1875 * bug fix: fix random memory faults related to interrupts on sparc
1876 * bug fix: fix deadlocks related to starting threads
1877 * bug fix: fix deadlines on locks on futex platforms
1878 * bug fix: restore errno in signal handlers
1879 * bug fix: fix deadlocks related to hash tables
1880 * bug fix: fix deadlocks in pcl
1882 changes in sbcl-1.0.25 relative to 1.0.24:
1883 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1884 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1885 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1886 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1887 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1888 better name and does not return values so stale on multiprocessor systems.
1889 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1891 * improvement: unithread builds keep track of MUTEX-VALUE.
1892 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1893 stream anymore making it thread safe to have a concurrent reader and
1894 a writer, for instance, in a pipe.
1895 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1896 arguments, making compiler-macros for SETF-functions able to inspect
1897 their constant arguments.
1898 * improvement: COMPILE-FILE reports times with millisecond accuracy
1899 (thanks to Luis Oliveira)
1900 * optimization: CHAR-CODE type derivation has been improved, making
1901 TYPEP elimination on subtypes of CHARACTER work better. (reported
1902 by Tobias Rittweiler, patch by Paul Khuong)
1903 * bug fix: setting alien structure fields of type struct by value now
1904 computes the right offset for the memory copy.
1905 * bug fix: compilation problem involving inlined calls to aliens with
1906 result type VOID. (reported by Ken Olum)
1907 * bug fix: #235a; sequential inline expasion in different policies no
1908 longer reuses the functional from the previous expansion site.
1909 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1910 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1911 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1912 cause an implied type redefinition. Regression from 1.0.21.29.
1913 * bug fix: sign-extension of small signed return values now works with C
1914 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1915 * improvements to the Windows port:
1916 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1917 Westfold, thanks to Rudi Schlatte)
1919 changes in sbcl-1.0.24 relative to 1.0.23:
1920 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1921 vector of a multidimensional SIMPLE-ARRAY.
1922 * new feature: the system now signals a continuable error if standard
1923 readtable modification is attempted. (thanks to Tobias Rittweiler)
1924 * new feature: DIRECTORY has been extended with a non-standard keyword
1925 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1926 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1927 has been robustified and documented better. (thanks to Robert Goldman)
1928 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1929 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1930 * tradeoff: constant FORMAT control strings are now compiled unless
1931 SPACE > SPEED (previously only when SPEED > SPACE.)
1932 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1934 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1936 * bug fix: lexical type declarations are now correctly reported by
1937 SB-CLTL2. (reported by Larry D'Anna)
1938 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1939 using UTF-8 as external format. (thanks to Luis Oliveira)
1940 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1941 are signalled correctly. (thanks to Stas Boukarev)
1942 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1943 designator. (thanks to Tobias Rittweiler)
1944 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1945 designator, and returns T instead of the function. (thanks to
1947 * bug fix: direct superclasses of STANDARD-CLASS and
1948 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1949 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1950 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1951 when no class with the named slot yet exists no longer causes a
1952 compile-time style-warning.
1953 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1954 in safe code. (reported by Didier Verna)
1955 * bug fix: #430; nested structure constructors can stack allocate.
1956 * bug fix: on some 64-bit platforms dynamic space size was truncated
1957 to #xffff0000 bytes. (reported by Benjamin Lambert)
1958 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1959 REPL unusable. (reported by Daniel Herring)
1960 * bug fix: return values of READ-SEQUENCE did not take :START into
1961 account on file streams, regressions since 1.0.12.22. (reported by
1962 Thomas Russ, patch by Paul Khuong)
1963 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1964 method specializer used to confuse permuation vector optimization.
1965 * bug fix: system inserted bogus implicit type declarations for local
1966 special variables in DEFMETHOD bodies.
1967 * bug fix: #354; duplicated frames in backtraces due to
1968 non-tail-call-optimized XEPs to functions with return type NIL
1970 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1971 initializes structure object slots according to DEFSTRUCT initforms,
1972 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1973 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1974 (reported by Bruno Haible and Stephen Wilson)
1975 * bug fix: #395; fill-pointer output streams used now support
1976 element-type BASE-CHAR as well.
1977 * bug fix: compiler error when attempting to derive return value of
1978 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1980 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1982 * bug fix: Mac OS X binaries should now be portable between Leopard
1985 changes in sbcl-1.0.23 relative to 1.0.22:
1986 * enhancement: when disassembling method functions, disassembly
1987 for the associated fast function is also produced.
1988 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1990 * optimization: printing with *PRINT-PRETTY* true is now more
1991 efficient as long as the object being printed doesn't require
1992 special handling by the pretty printer.
1993 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1994 now interact correctly with type declarations.
1995 * partial bug fix: PCL detects infinite recursion during wrapper
1996 validation. (thanks to Attila Lendvai)
1997 * bug fix: #426; nested function calls are inlined properly.
1998 Previously if FOO was an inline function, in calls of the form
1999 (FOO (FOO ...)) the outer call was not inlined.
2000 * bug fix: long long arguments passed in registers to alien
2001 functions on PowerPC Linux and NetBSD are now handled correctly
2002 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
2004 changes in sbcl-1.0.22 relative to 1.0.21:
2005 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
2006 for the shared object in the current directory, but passes the native
2007 namestring of the designated pathname to the operation system's shared
2008 object loading function as-it.
2009 * minor incompatible change: --disable-debugger toplevel option now takes
2010 effect before processing of initialization files and --eval or --load
2012 * new feature: new commandline argument: --script, which supports
2013 shebang lines. See documentation for details. (based on work by
2015 * new feature: SAVE-LISP-AND-DIE can save current values of
2016 --dynamic-space-size and --control-stack-size in the executable core,
2017 causing it to skip normal runtime option processing. See documentation
2018 for details. (thanks to Zach Beane)
2019 * enhancement: inoccous calls to EVAL or generic functions dispatching
2020 on subclasses of eg. STREAM no longer cause compiler notes to appear.
2021 * enhancement: the system no longer resignals errors from --load and
2022 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
2023 associated with the original error to be lost. (thanks to Ariel
2025 * enhancement: :DONT-SAVE keyword argument has been added to
2026 LOAD-SHARED-OBJECT for controlling interaction with
2027 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
2028 the effects of an earlier LOAD-SHARED-OBJECT call.
2029 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
2030 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
2031 provided. (reported by Cedric St-Jean)
2032 * bug fix: circularity handling in the reader did not treat raw
2033 structure slots correctly. (reported by Cedric St-Jean)
2034 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
2035 file descriptors when there were none.
2036 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
2037 was broken. (reporteed by Willem Broekema)
2038 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
2039 pathnames without a directory.
2040 * bug fix: COMPILE-FILE did not warn about undefined variable
2041 references at toplevel, and LOAD of the resulting fasl did
2042 not signal an error.
2043 * bug fix: functions with non-required arguments used to end up with
2044 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
2045 * bug fix: redefining a function with non-required arguments didn't
2046 update the system's knowledge about its call signature properly.
2047 * bug fix: fixed #431; incompatible alien record type redefinitions
2048 are detected and handled. (reported by Neil Haven)
2049 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
2050 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
2052 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2053 after alien stack frames.
2054 * bug fix: strings passed to mk{s,d}temp lacked null termination
2056 changes in sbcl-1.0.21 relative to 1.0.20:
2057 * new feature: the compiler is able to track the effective type of a
2058 generic function across method addition and removal.
2059 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2060 appropriately typed structure slots without locking.
2061 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2062 information like those gathered by TIME using a programming-friendly
2064 * new feature: TIME reports time taken even if the form performs a
2065 non-local transfer of control.
2066 * enhancement: reduced conservativism on GENCGC platforms: on
2067 average 45% less pages pinned (measured from SBCL self build).
2068 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2069 mutate constant symbols or violate declaimed type of the symbol.
2070 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2071 sleeping on the semaphore in heavily contested semaphores.
2072 * bug fix: semaphores and condition variables were not interrupt
2074 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2075 owned by other threads anymore.
2076 * bug fix: FIND on lists called KEY outside the specified
2077 subsequence. (reported by budden)
2078 * bug fix: LOG doesn't use single-float intermediate results when
2079 given mixed integer and double-float arguments, leading to better
2080 precision. (reported by Bob Felts)
2081 * bug fix: LOG with base zero returned values of inconsistent type.
2083 changes in sbcl-1.0.20 relative to 1.0.19:
2084 * minor incompatible change: OPTIMIZE qualities
2085 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2086 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2087 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2088 * documentation: some slot access efficiency guidelines have been
2089 added to the user manual.
2090 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2091 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2092 as ASSOC and MEMEBER.
2093 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2094 to more efficient EQ-comparison versions more often.
2095 * optimization: enhanced derivation of DOLIST iteration variable type
2097 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2099 * optimization: runtime lookup of function definitions can be
2100 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2101 * optimization: compiler is able to derive the return type of
2102 (AREF (THE STRING X) Y) as being CHARACTER.
2103 * optimization: CLRHASH on empty hash-tables no longer does pointless
2104 work. (thanks to Alec Berryman)
2105 * optimization: REPLACE deftransforms don't punt when :START1 or
2107 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2108 no longer emits a code deletion note. (reported by Andrew
2110 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2111 functions with an odd number of &OPTIONAL arguments, a &REST
2112 argument, and one or more &KEY arguments at the call site.
2113 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2114 arguments appeared at call sites as well.
2115 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2116 READ-LINE &co can no longer read from them afterwards. (reported
2118 * bug fix: fixed #427: unused local aliens no longer cause compiler
2119 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2121 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2122 alien-stack leakage. (reported by Andy Hefner)
2123 * bug fix: PROGV signals an error when an attempt to violate declared
2124 type of a variable or bind a constant is made.
2125 * bug fix: SET signals an error when an attempt to violate declared
2126 type of a variable is made.
2127 * bug fix: restart computation during the execution of a restart
2128 test function no longer causes infinite recursion. (reported by
2130 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2131 signals an error. (thanks to Pierre Mai)
2132 * bug fix: EXPORT left symbol unexported in conflict situations.
2133 (thanks to Michael Weber)
2134 * bug fix: correctly handle name conflicts involving CL:NIL.
2135 (thanks to Michael Weber)
2136 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2137 conflicts arising from USEing package with conflicting symbols
2138 correctly. (thanks to Michael Weber)
2140 changes in sbcl-1.0.19 relative to 1.0.18:
2141 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2142 warnings that go otherwise unhandled will be muffled if they are
2143 of the type that's the value of this variable.
2144 * optimization: stack allocation is slightly more efficient on x86
2146 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2147 where a raw slot always is initialized using the initform whose
2148 type is not know sufficiently well a compile-time are now compiled
2149 correctly. (reported by John Morrison)
2150 * bug fix: compiler no longer makes erronous assumptions in the
2151 presence of non-foldable SATISFIES types.
2152 * bug fix: stack analysis missed cleanups of dynamic-extent
2153 arguments in non-let-converted calls to local functions.
2154 * improvements to the Windows port:
2155 ** adjusted address spaces for building on both Win32 and
2156 Win64. (thanks for John Connors)
2157 * fixed some bugs revealed by Paul Dietz' test suite:
2158 ** interval arithmetic during type derivation used inexact integer
2159 to single-float coercions.
2160 ** arithmetic operations involving large integers and single
2161 floats give the same results in compiled and interpreted code.
2162 ** deriving the result type of COERCE no longer signals an error
2163 if the derived type of the second argument is a MEMBER type
2164 containing invalid type specifiers.
2165 ** ADJOIN with constant NIL as second argument works correctly.
2166 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2168 changes in sbcl-1.0.18 relative to 1.0.17:
2169 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2170 profiles only the current thread.
2171 * minor incompatible change: changes to SYMBOL-VALUE of constants
2172 defined with DEFCONSTANT now signal an error.
2173 * enhancement: SB-SPROF now has support for wallclock profiling,
2174 and is also able to profile specific threads. REPORT output
2175 has also additional sorting options.
2176 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2178 * optimization: structure allocation has been improved
2179 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2180 ** out of line constructors are ~10% faster.
2181 ** inline constructors are ~15% faster.
2182 ** inline constructors are capable of dynamic extent allocation
2183 (generally on x86 and x86-64, in some cases on other platforms
2185 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2187 * optimization: file compiler is now able to coalesce non-circular
2188 lists, non-base strings, and bit-vectors. Additionally, constants
2189 are never referenced through SYMBOL-VALUE at runtime.
2190 * optimization: code defining methods on PRINT-OBJECT (and other
2191 generic functions in the COMMON-LISP package) now loads faster.
2192 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2194 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2195 fasl is now deleted. (reported by Attila Lendvai)
2196 * bug fix: READ-LINE always returned NIL for the last line in files.
2197 (reported by Yoshinori Tahara)
2198 * bug fix: more accurate disassembly annotations of foreign function
2199 calls. (thanks to Andy Hefner)
2200 * bug fix: trimming non-simple strings and non-string string
2201 designators when the there is nothing to trim works properly.
2202 (thanks to James Knight)
2203 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2204 (thanks to Travis Cross)
2205 * fixed some bugs revealed by Paul Dietz' test suite:
2206 ** NIL is a valid function name (regression at 1.0.13.38)
2207 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2208 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2209 fill pointers properly (regression at 1.0.12.23)
2210 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2211 displacement indices properly (regression at 1.0.12.23)
2213 changes in sbcl-1.0.17 relative to 1.0.16:
2214 * temporary regression: user code can no longer allocate closure
2215 variable storage on stack, due to bug 419 without explicitly
2216 requesting it. Please consult sbcl-devel for advice if you need to
2217 use this feature in the meanwhile.
2218 * new feature: runtime argument --control-stack-size can be used to
2219 adjust thread default control stack size.
2220 * enhancement: improved TIME output
2221 ** all times are reported using the measured accuracy (milliseconds
2222 for real and GC times, microseconds for everything else.)
2223 ** processor cycle counts on x86 and x86-64.
2224 ** interpreted forms are counted for both evaluator modes.
2225 ** number of lambdas converted by the compiler is reported.
2226 ** CPU percentage report (computed from real and total run time.)
2227 ** more comprehensive run time reporting, using a condenced format
2228 ** interperted form, lambda, and page fault counts are omitted
2230 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2232 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2233 * optimization: two argument forms of LAST are upto ~10% faster
2234 in normal SPEED policies.
2235 * optimization: NCONC no longer needs to heap cons its &REST list
2236 in normal SPEED policies.
2237 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2238 to Sidney Markowitz)
2239 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2240 regression since 1.0.9.1. (thanks to Eric Marsden)
2241 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2242 since 1.0.15.36. (thanks to Paul Khuong)
2243 * bug fix: LAST when always returned the whole list when given a bignum
2244 as the second argument.
2245 * bug fix: dynamic extent allocation of nested lists and vectors
2246 could leak to otherwise accessible parts.
2247 * bug fix: invalid optimization of heap-allocated alien variable
2249 * bug fix: fasl header checking is less vulnerable to different
2250 platform word lengths.
2251 * bug fix: more correct assembler syntax for GNU binutils
2252 2.18.50.0.4 support. (thanks to Marijn Schouten)
2253 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2255 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2256 declarations) successfully. (reported by Attila Lendvai)
2258 changes in sbcl-1.0.16 relative to 1.0.15:
2259 * minor incompatible change: revert the changes to sb-posix's error
2260 signaling added in 1.0.14.
2261 * minor incompatible change: change PROBE-FILE back to returning
2262 NIL whenever we can't get a truename, as was the case before 1.0.14.
2263 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2264 inherits from ERROR instead of just CONDITION.
2265 * new feature: SB-INTROSPECT can provide source locations for instances
2266 as well. (thanks to Tobias Rittweiler)
2267 * optimization: binding special variables now generates smaller code
2268 on threaded platforms.
2269 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2270 and cases where no :TEST is given but the compiler can infer that
2271 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2272 * optimization: better LOGNOT on fixnums.
2273 * optimization: modular arithmetic for a particular requested width
2274 is implemented using a tagged representation unless a better
2275 representation is available.
2276 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2277 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2278 for wellformedness and returns a specialized vector. (reported by
2279 Francois-Rene Rideau)
2280 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2281 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2282 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2283 unscheduling timer at the same time as another timer fires.
2284 * bug fix: don't reschedule timers for dead threads.
2285 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2286 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2287 bogus errors if select() was interrupted.
2288 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2290 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2291 * enhancement: cleaner backtraces for interactive interrupts, as
2292 well as other cases where the interesting frames used to be
2293 obscured by interrupt handling frames.
2294 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2295 now supported, and tracing a whole package using (TRACE "FOO") now
2296 traces SETF-functions as well.
2297 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2298 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2299 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2300 * unreadably printed representation of hash-tables now includes
2302 * bug fix: partially fixed #188: type propagation from assignments
2303 is now more efficient.
2304 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
2305 'DOUBLE-FLOAT) are not flushable.
2306 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
2307 full address of the object, and none of the tag bits.
2308 * bug fix: readably printing hash-tables now respects other printer
2309 control variables. (reported by Cedric St-Jean)
2310 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
2311 keyword with MAKE-HASH-TABLE.
2312 * bug fix: export SB-POSIX:MKSTEMP.
2313 * bug fix: SORT was not interrupt safe.
2314 * bug fix: XREF accounts for the last node of each basic-block as
2316 * bug fix: MAKE-INSTANCE optimizations interacted badly with
2317 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
2318 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2319 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2320 create obsolete instances in the case of redefinition or
2321 obsoletion of a superclass. (thanks to Andy Hefner)
2322 * bug fix: Support for the Alpha architecture has been revived; it had
2323 suffered somewhat from lack of maintenance since sbcl-1.0.
2324 * improvements to the Windows port:
2325 ** The system detects the codepage to use at startup, instead of
2326 using the value from the saved core. (thanks to Kei Suzuki)
2328 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2329 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2330 (see documentation for details.)
2331 * revived support for OpenBSD (contributed by Josh Elsasser)
2332 * partially fixed bug #108: ROOM no longer suffers from occasional
2333 (AVER (SAP= CURRENT END)) failures.
2334 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2335 bodies no longer cause a WARNING to be signalled. (reported by
2337 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2338 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2339 the bug in TRUNCATE.) (reported by Michael Weber)
2340 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2341 no samples. (reported by Andy Hefner)
2342 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2343 no longer appear as (NIL ...) frames in backtraces.
2344 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2345 is now actually exported from SB-EXT as documented. (reported by
2347 * bug fix: sb-aclrepl now correctly understands how to inspect
2348 single-floats on 64-bit platforms where single-floats are not boxed.
2349 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2350 yet been finalized. (reported by Levente Meszaros)
2351 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2352 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2353 SBCL-specific optimize qualities.
2355 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2356 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2357 an executable in the search path, and does so in the child
2358 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2359 been removed; it can be found in the CVS history, for somebody who
2360 needs that search behavior (see the manual).
2361 * minor incompatible change: compiler policy re. weakening type
2362 checks has changed: now type checks are weakened only if SAFETY < 2
2364 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2365 unparsing of directory pathnames as files. Analogously,
2366 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2367 filename to parse into a directory pathname.
2368 * enhancement: implicit generic function creation now signals a
2369 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2370 users can bind handlers for and muffle around calls to LOAD.
2371 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2372 to be used (using the default stream external format), and allows
2373 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2374 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2375 strings and vectors whose element-type or simplicity is not fully
2376 known at compile-time.
2377 * optimization: STRING-TRIM and related functions no longer allocate
2378 a new string when no trimming needs to be performed. These functions
2379 are also faster than before when the input string has been declared
2381 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2382 * optimization: READ-LINE is significantly faster for files containing
2384 * optimization: non-open coded uses of character comparison operators
2385 (e.g. char=) no longer cons when called with more than one parameter
2386 on platforms supporting dynamic-extent allocation.
2387 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2388 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2389 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2391 * bug fix: some sequence functions elided bounds checking when
2393 * bug fix: too liberal weakening of union-type checks when SPEED >
2395 * bug fix: more bogus fixnum declarations in ROOM implementation
2398 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2399 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2400 :SYNCHRONIZED argument, which makes the hash-table safe for
2401 concurrent accesses (but not iteration.) See also:
2402 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2403 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2404 * optimization: CONCATENATE on strings is an order of magnitude faster
2405 in code compiled with (> SPEED SPACE).
2406 * optimization: SUBSEQ is ~50% faster on lists.
2407 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2408 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2409 END is smaller then START.
2410 * bug fix: SB-PROFILE will no longer report extra consing for nested
2411 calls to profiled functions.
2412 * bug fix: ROOM implementation had bogus fixnum declarations which
2413 could cause type-errors when calling ROOM on large images.
2414 * bug fix: if file compilation is aborted, the partial fasl is now
2415 deleted, and COMPILE-FILE returns NIL as the primary value.
2416 * bug fix: number of thread safety issues relating to SBCL's internal
2417 hash-table usage have been fixed.
2418 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2419 be returned from its body when the values were being returned
2420 using unknown-values return convection and the W-P-O was wrapped
2421 inside an UNWIND-PROTECT.
2422 * bug fix: sb-posix should now compile again under Windows, enabling
2423 slime to work again.
2425 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2426 * incompatible change: hash-table accessor functions are no longer
2427 automatically protected by locks. Concurrent accesses on the same hash-table
2428 from multiple threads can give inconsistent results or even corrupt the
2429 hash-table completely. Multi-threaded applications should do their own
2430 locking at the correct granularity. In the current implementation it is
2431 still safe to have multiple readers access the same table, but it's not
2432 guaranteed that this property will be maintained in future releases.
2433 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2434 and will signal an error at runtime.
2435 * enhancement: SB-THREAD package now exports a semaphore interface.
2436 * enhancement: CONS can now stack-allocate on x86 and
2437 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2439 * enhancement: nested lists can now be stack allocated on
2440 platforms providing stack allocation support.
2441 * enhancement: dynamic-extent support has been extended to support
2442 cases where there are multiple possible sources for the stack
2444 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2445 if the mutex is uncontested on Linux.
2446 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2447 as specified by the CLHS. (thanks to Tobias Rittweiler)
2448 * bug fix: NaN comparison now works on x86-64.
2449 * bug fix: CLOSE :ABORT T on a stream with pending output now
2451 * bug fix: instances of non-standard metaclasses using standard
2452 instance structure protocol sometimes missed the slot type checks
2454 * bug fix: known functions can be inlined in high-debug code.
2456 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2457 * minor incompatible change: the MSI installer on Windows no longer
2458 associates .lisp and .fasl files with the installed SBCL.
2459 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2460 on Windows. (thanks to Luis Oliviera)
2461 * new feature: SB-CLTL2 contrib module now implements
2462 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2463 * optimization: scavenging weak pointers is now more efficient,
2464 requiring O(1) instead of O(N) per weak pointer to identify
2465 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2466 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2467 method bodies using constant slot-names when the first argument is
2468 a specializer parameter for the method.
2469 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2470 names, when the class of the instance is a direct instance
2471 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2472 as slow as the constant slot-name case.)
2473 * optimization: member type construction is now O(N) instead
2475 * optimization: UNION and NUNION are now O(N+M) for large
2476 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2478 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2479 now more readable in environments like Slime which display it.
2480 (thanks to Tobias C. Rittweiler)
2481 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2482 was able to infer the correct argument type for the object on which
2483 the CAS operation was being performed.
2484 * bug fix: copy propagation interfered with parallel assignment
2485 semantics in local calls. (reported by Paul Khuong)
2486 * bug fix: the signed modular fixnum shift compiled to wrong code on
2487 x86 and x86-64. (spotted by a slight modification to some of
2490 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2491 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2492 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2493 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2495 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2496 and generic function now print the object identity for anonymous
2497 instances. (thanks to Attila Lendvai)
2498 * enhancement: as an extension to MOP, SBCL now supports SETF of
2499 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2500 (thanks to Attila Lendvai)
2501 * enhancement: sb-cover has an alternate annotation mode which puts
2502 the form annotations at the car of the form, instead of annotating
2503 it completely. The benefit of this mode is that it shows better
2504 which forms were instrumented by the compiler.
2505 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2506 by printer control variables. (reported by Dan Corkill)
2507 * bug fix: system leaked memory when delayed output was performed by
2508 the OS in smaller chunks then expected. (thanks to David Smith)
2509 * bug fix: system leaked memory when file streams were not closed
2511 * bug fix: large objects written to slow streams that were modified
2512 after the write could end up with the modified state written to
2513 the underlying file descriptor.
2514 * bug fix: multiple threads operating in parallel on the same stream
2515 could cause buffer-overflows.
2516 * bug fix: source location information is stored correctly
2517 (broken since 1.0.6). This bug would generally show up as the
2518 Slime debugger highlighting the wrong form when the sldb-show-source
2520 * bug fix: Branch forms are again annotated as branches in the sb-cover
2522 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2523 on x86-64. (reported by Gregory Vanuxem)
2524 * bug fix: EQUALP could return wrong results for structures with raw
2525 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2526 word). (reported by Vjacheslav Fyodorov)
2527 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2530 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2531 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2532 atomic compare-and-swap operations on threaded platforms.
2533 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2534 allows assigning a global minimum value to optimization qualities
2535 (overriding proclamations and declarations).
2536 * enhancement: closed over variables can be stack-allocated on x86
2538 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2540 * optimization: slot definition lookup is now O(1). This speeds up
2541 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2542 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2543 * optimization: ASSOC and MEMBER can now be open-coded for all
2544 combinations of keyword arguments when second argument is constant
2545 and SPEED >= SPACE. In other cases a specialized version is
2547 * bug fix: using obsoleted structure instances with TYPEP and
2548 generic functions now signals a sensible error.
2549 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2550 (reported by Kristoffer Kvello)
2551 * bug fix: backtrace construction is now more careful when making
2552 lisp-objects from pointers on the stack, to avoid creating bogus
2553 objects that can be seen by the GC.
2554 * bug fix: defaulting of values in contexts expecting more than 7
2555 variables now works on x86-64. (reported by Christopher Laux)
2556 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2558 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2559 as the property-list of a symbol.
2560 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2561 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2562 situations requested, are once again file-compileable. (reported
2565 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2566 * MOP improvement: support for user-defined subclasses of
2567 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2568 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2569 the expansion of DEFMETHOD, is responsible for generating a form
2570 which creates a list of specializers when evaluated. Additional
2571 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2572 debugging and introspective support.
2573 * minor incompatible change: the (unsupported) spinlock interface
2574 has changed: free spinlock now has the value NIL, and a held spinlock
2575 has the owning thread as its value.
2576 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2577 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2579 * enhancement: name of a socket-stream is now "a socket" instead of
2580 "a constant string".
2581 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2582 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2583 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2584 for generic functions. (Thanks to Tobias C. Rittweiler)
2585 * optimization: bignum printing speed has been improved by 20-40%
2586 (depending on the bignum size.)
2587 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2589 * bug fix: the cache used by the CLOS to store precomputed effective
2590 methods, slot offsets, and constant return values is now thread and
2592 * bug fix: generic function dispatch function updating is now thread
2593 and interrupt safe (in the sense that the known issues have been
2595 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2596 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2597 * bug fix: asdf systems with dependencies to the SB-POSIX or
2598 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2599 * bug fix: interrupt safety of applicable method computation has been
2602 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2603 * new contrib: sb-cover, an experimental code coverage tool, is included
2604 as a contrib module.
2605 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2606 significantly faster.
2607 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2608 produce more efficient code on x86-64 if the compiler can determine
2609 that (+ INDEX <constant>) does not require a bounds check and FOO
2610 has an element type at least 8 bits wide.
2611 * enhancement: a new, experimental synchronous timeout facility is
2612 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2613 * enhancement: when a symbol name conflict error arises, the
2614 conflicting symbols are always printed with a package prefix.
2615 (thanks to Kevin Reid)
2616 * enhancement: stepping is now once again supported on the SPARC and
2617 MIPS platforms. (It is also now more likely to work on CheneyGC
2619 * enhancement: sb-sprof can now also track and report accurate call
2621 * bug fixes: the treatment of non-standard subclasses of
2622 SB-MOP:SPECIALIZER is more correct.
2623 * incompatible change: PURIFY no longer copies the data from the
2624 dynamic space into the static and read-only spaces on platforms
2625 that use the generational garbage collector
2626 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2628 * bug fix: GC race condition occasionally resulting in crashes with
2629 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2631 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2633 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2634 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2635 * bug fix: an asynchronous interrupt could previously leave the
2636 system running with GC inhibited.
2637 * bug fix: a DECLARE form evaluated at top-level now causes an error
2638 rather than silently (or verbosely) returning NIL.
2639 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2640 result in a error being signalled due to source form lookup errors.
2641 (reported by Peter Graves)
2643 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2644 * incompatible change: removed writer methods for host-ent-name,
2645 host-ent-addresses -- changing the values did not update the DNS
2647 * minor incompatible change: changed experimental JOIN-THREAD interface
2648 * documentation: the manual now lists reader and writer methods
2649 in class slot documentation sections. (thanks to Richard M Kreuter)
2650 * documentation: unwinding from asyncronous events has been
2651 documented as unsafe.
2652 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2653 in multithreaded application code.
2654 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2655 platforms. (thanks to James Anderson for the optimization hint)
2656 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2658 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2659 variants no longer cons.
2660 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2661 their NOT- variants no longer cons.
2662 * optimization: EQUAL hash tables no longer use SXHASH for objects
2663 of all data types, but instead use an EQL hash for types for which
2664 EQUAL is the same as EQL.
2665 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2666 are significantly faster.
2667 * optimization: new STRING-OUTPUT-STREAM implementation is much
2668 faster for large outputs and conses 30% less on average.
2669 * enhancement: XREF information is now collected for references made
2670 to global variables using SYMBOL-VALUE and a constant argument.
2671 * enhancement: SIGINT now causes a specific condition
2672 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2673 * bug fix: FILE-POSITION used to signal an error in some cases where
2674 ANSI requires it to return NIL.
2675 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2676 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2677 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2679 * bug fix: bad type declaration in the CLOS implementation has
2680 been fixed. (reported by James Anderson)
2681 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2682 (thanks to Lutz Euler)
2683 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2684 required by the CLHS. (reported by Samium Gromoff)
2685 * bug fix: dead unbound variable references now signal an error.
2686 (reported by Marco Monteiro)
2687 * bug fix: / with an unused value was being deleted in safe code.
2688 (thanks to Marco Monteiro and Kevin Reid)
2689 * bug fix: number of characters that can be written onto a single
2690 line in a file is unlimited.
2691 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2692 been fixed by inhibiting interrupts for when GC is disabled.
2693 * bug fix: some interrupt safety issues with GETHASH, (SETF
2694 GETHASH), CLRHASH and REMHASH have been fixed.
2695 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2696 specifier no longer causes infinite recursion.
2697 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2698 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2699 * bug fix: an &environment argument with the correct variable information
2700 is passed to macros that are expanded during byte compilation.
2701 (reported by Samium Gromoff)
2702 * bug fix: a logic error was causing the hash function for bignums to
2703 have excessive amounts of collisions. (reported by Faré Rideau)
2704 * bug fix: modifying the contents of an array could change the return
2705 value of SXHASH on that array, which is only allowed for strings
2706 and bit vectors. (bug introduced in 0.9.16)
2707 * improvement: the x86-64/darwin port now passes all tests (except
2708 for the debugger tests) but should still be considered
2709 experimental until this is fixed.
2710 * improvement: a style-warning is signaled for CASE (etc) clauses with
2711 duplicate keys. (thanks to Kevin Reid)
2712 * improvement: macos/x86 and macos/x86-64 now use mach exception
2713 handlers for dealing with illegal instructions (for trapping and
2714 error handling) and memory protection violations (for GC).
2716 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2717 * new platform: experimental support for x86-64/darwin (MacOS).
2718 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2719 and getnameinfo sockets functions are used instead of gethostbyaddr
2720 and gethostbyname, on platforms where the newer functions are available.
2721 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2723 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2724 don't print the startup banner, but behave as if --noinform was passed
2725 as a command line argument. (thanks to Kevin Reid)
2726 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2727 * optimization: code using alien values with undeclared types is much faster.
2728 * optimization: the compiler is now able to open code SEARCH in more cases.
2729 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2730 * bug fix: using standardized COMMON-LISP special variables as loop
2731 variables no longer signals bogus package lock violations. (reported
2733 * bug fix: declaring local loop variables to be of a range-limited type
2734 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2735 (reported by Andras Simon)
2736 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2737 bugs remain on x86-64.)
2738 * bug fix: the #= and ## reader macros now interact reasonably with
2739 funcallable instances.
2740 * bug fix: type-checks for function arguments were compiled using the
2741 compiler policy settings of the wrong lexical environment (in 1.0.2
2743 * bug fix: SHADOW accepts characters as string designators, as required
2744 by the spec (thanks to Eric Marsden)
2745 * bug fix: fixed GC safety issues when foreign functions are called with
2746 non-base strings as arguments
2747 * bug fix: more consistent error output for fatal-compiler-warnings, like
2749 * bug fix: functions with proper names were showing up as NIL in
2750 backtraces (reported by Edi Weitz, regression in 1.0.2)
2752 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2753 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2754 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2755 produce more efficient code on the x86 if the compiler can determine
2756 that (+ INDEX <constant>) does not require a bounds check and FOO
2757 has an element type at least 8 bits wide.
2758 * bug fix: references to undefined variables are handled the same way
2759 in toplevel forms as in the normal compiler
2760 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2762 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2763 (thanks to Jon Buller)
2764 * improvement: faster compilation times for complex functions
2765 * improvement: added readlink support to SB-POSIX (thanks to Richard
2768 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2769 * improvement: experimental support for mach exception handling on
2770 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2772 * improvement: support for GBK external format.
2773 (thanks to Chun Tian (binghe))
2774 * improvement: the debugger now displays variables that have been closed
2775 over, in code compiled with (DEBUG 2) or higher
2776 * improvement: support for executable cores on NetBSD (thanks to
2778 * new feature: added a RESTART-FRAME debugger command
2779 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2780 be used to provide an implementation for FILE-POSITION on Gray streams
2781 (thanks to Eric Marsden)
2782 * new feature: add syslog, openlog and closelog support to SB-POSIX
2783 (thanks to Richard Kreuter)
2784 * optimization: the function call overhead in code compiled with
2785 a high DEBUG optimization setting is significantly
2786 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2787 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2788 (thanks to Tony Martinez)
2789 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2790 evaluated once (reported by Kevin Reid)
2791 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2792 works again (thanks to Kilian Sprotte)
2793 * bug fix: an error is signaled for tagbodies with duplicate tags
2794 (thanks to Stephen Wilson)
2795 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2796 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2797 stack frames from alien callbacks.
2798 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2799 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2800 65k pages (thanks to David Woodhouse)
2801 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2803 changes in sbcl-1.0.1 relative to sbcl-1.0:
2804 * new platform: FreeBSD/x86-64, including support for threading.
2805 * new feature: the compiler stores cross-referencing information
2806 about function calls (who-calls), macroexpansion (who-macroexpands)
2807 and special variables (who-binds, who-sets, who-references) for code
2808 compiled with (< SPACE 3). This information is available through the
2809 sb-introspect contrib.
2810 * new feature: users may subclass SEQUENCE, and have instances of
2811 these classes interoperate with standard Common Lisp functions if
2812 a number of methods are defined. (This feature is experimental
2813 and the interface subject to change based on feedback from SBCL
2814 users and the general community)
2815 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2816 x86/x86-64, rather than the previous fixed depth of 8
2817 * improvement: another pthread back-end of mutex "pthread-futex".
2818 * bug fix: non-ascii command-line arguments are processed correctly
2819 (thanks to Yaroslav Kavenchuk)
2820 * bug fix: non-required arguments were not passed correctly when a method
2821 defined using DEFMETHOD was called from a mop-generated method using
2822 CALL-NEXT-METHOD (reported by Pascal Costanza)
2823 * bug fix: recursion is now permitted in accessors through
2824 SLOT-UNBOUND. (reported by Pascal Costanza)
2825 * bug fix: an error was signaled at startup if the HOME environment
2826 variable was defined, but had an empty value (reported by Peter Van Eynde)
2827 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2828 signal a PROGRAM-ERROR, not a BUG.
2829 * bug fix: SB-POSIX:READDIR works when built with large file support.
2830 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2832 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2833 for better automatic indentation support. (thanks to Matt Pillsbury)
2834 * optimization: loading generic functions no longer takes O(n^2) time,
2835 proportional to the amount of methods in the generic function
2836 (reported by Todd Sabin and Jeremy Brown)
2837 * optimization: the FIND and POSITION family of sequence functions
2838 are significantly faster on arrays whose element types have been
2840 * improvements to the Windows port:
2841 ** Intermittent heap corruption problems have been fixed. (thanks
2842 to Alastair Bridgewater)
2843 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2845 ** Lisp is able to unwind foreign exception frames from alien
2846 callbacks. (thanks to Alastair Bridgewater)
2848 changes in sbcl-1.0 relative to sbcl-0.9.18:
2849 * improvement: experimental support for threading on FreeBSD/x86.
2850 (thanks to NIIMI Satoshi)
2851 * improvement: runtime option --dynamic-space-size can be used
2852 to set the size of the dynamic space reserved on startup.
2853 * improvement: floating point modes in effect are now saved in
2854 core, and restored on startup.
2855 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2856 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2857 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2858 threads are not running after *SAVE-HOOKS* have run.
2859 * improvement: writes to CLOS instance slots are type-checked in code
2860 compiled with (SAFETY 3)
2861 * improvement: floating-point exception handling on FreeBSD (thanks to
2863 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2864 (thanks to Zach Beane)
2865 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2867 * improvement: added support for the Shift-JIS external format.
2868 (contributed by NIIMI Satoshi)
2869 * improvement: callbacks are supported on Linux/PPC. (thanks to
2871 * bug fix: compiler bug triggered by a (non-standard) VALUES
2872 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2873 * bug fix: file compiler no longer confuses validated and already
2874 dumped structurres. (reported by Kaersten Poeck)
2875 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2876 fill-pointer signals a type-error as required. (thanks to
2878 * bug fix: disassemly of funcallable instances works.
2879 * bug fix: single stepping on PPC.
2880 * bug fix: fix thread-safety problems in the type system (generally
2881 manifesting as nonsensical errors like "STRING is a bad type specifier
2882 for sequences" or "The value 1 is not of type FIXNUM")
2883 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2884 (reported by Josip Gracin)
2885 * bug fix: an error is signaled for attempts to displace arrays with
2886 incompatible element types (thanks to Mario Mommer)
2887 * bug fix: more correct handling of wide characters in debug info
2888 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2889 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2890 and don't cause extra consing
2891 * optimization: MAP and MAP-INTO are significantly faster on vectors
2892 whose elements types have been declared.
2893 * Improvements to SB-SPROF:
2894 ** Support for allocation profiling
2895 ** Reduced profiling overhead, especially for long profiling runs
2896 * Improvements to the Windows port:
2897 ** floating point exceptions are now reported correctly.
2898 ** stack exhaustion detection works partially.
2899 ** more accurate GET-INTERNAL-REAL-TIME.
2900 ** better RUN-PROGRAM behaviour in case of errors in the child
2902 ** PROBE-FILE now simplifies pathnames correctly.
2903 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2904 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2905 1st 1970 (although time timezone data will be unreliable).
2906 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2908 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2909 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2910 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2912 * bug fix: two potential GC deadlocks affecting threaded builds.
2913 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2914 returns T (reported by Anton Kazennikov)
2915 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2916 with non-variable places
2917 * bug fix: remove a race condition in the setting of
2918 funcallable-instance functions, this should make threaded CLOS
2919 code more stable against memory faults.
2920 * bug fix: corruption of specials when unbinding is interrupted by an
2921 asynchronous unwind (reported by Hannu Koivisto)
2922 * improvement: the debugger will now also display local variables that
2923 are only used once, for code compiled with a DEBUG optimization quality
2926 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2927 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2928 * incompatible change: External-format support for FFI calls. The
2929 SB-ALIEN:C-STRING no longer implies an ASCII
2930 external-format. Instead the string is subject to external-format
2931 conversion. Additionally return values of type SB-ALIEN:C-STRING
2932 are by default of type (SIMPLE-ARRAY CHARACTER), not
2933 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2934 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2935 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2936 * incompatible change: SB-EXT package no longer contains the
2937 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2938 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2940 * incompatible change: the single-stepper is no longer available
2941 on Alpha, Mips and Sparc platforms.
2942 * minor incompatible change: the direct superclasses of
2943 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2944 not (STANDARD-OBJECT FUNCTION). This makes the
2945 class-precedence-lists of GENERIC-FUNCTION and
2946 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2948 * minor incompatible change: the default stream external format on
2949 non-unicode SBCL is no longer detected from the locale, but is always
2951 * new feature: Add a version of evaluator that uses an interpreter instead
2952 of the compiler. EVAL still uses the compiler by default, to switch it
2953 to use the interpreter, set the value of the variable
2954 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2955 * minor incompatible change: the single-stepper REPL has been merged
2956 with the normal debugger (see the "Stepping" heading of the debugger help
2957 for more details). The debugger command STEP will no longer switch
2958 to the single-stepper REPL.
2959 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2960 for a type now works.
2961 * bug fix: loading of default sysinit file works. (thanks to Leonid
2963 * bug fix: better detection of circularities in the file-compiler.
2964 (reported by Marco Monteiro)
2965 * bug fix: the CL pathname functions now work with files that have
2966 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2967 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2968 systems with Unix98 pty semantics.
2969 * bug fix: ASDF-INSTALL will now work with bsd tar.
2970 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2972 * bug fix: timers expiring in dead threads no longer cause a
2973 type-error (reported by Paul "Nonny Mouse").
2974 * bug fix: thanks to more lightweight single-stepper instrumentation,
2975 code compiled with (DEBUG 3) will compile and execute significantly faster,
2976 and will have more accurate type-inferencing than before
2977 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2978 whose bindings are modified
2979 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2980 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2981 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2982 CL:SOFTWARE-VERSION with proper version
2984 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2985 * feature: implemented the READER-METHOD-CLASS and
2986 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2987 as specified by AMOP.
2988 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2990 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2991 (thanks to Lutz Euler)
2992 * optimization: hashing of general arrays and vectors has been
2993 improved. (reported by Any Fingerhut)
2994 * enhancement: SB-INTROSPECT is now able to find definitions of
2995 profiled functions. (thanks to Troels Henriksen)
2996 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2997 as well, allowing compiler-macros for SETF-functions to expand.
2998 * enhancement: step-instrumentation no longer wraps known
2999 single-value functions with multiple-value context, allowing
3000 better type inference.
3001 * fixed bug #337: use of MAKE-METHOD in method combination now works
3002 even in the presence of user-defined method classes. (reported by
3003 Bruno Haible and Pascal Costanza)
3004 * fixed bug #339(c): if there are applicable methods not part of any
3005 long-form method-combination group, call INVALID-METHOD-ERROR.
3006 (reported by Bruno Haible)
3007 * fixed bug #361: the :FUNCTION initarg in the protocol for
3008 initialization of methods can now be used to override
3009 internally-produced optimized functions. (reported by Bruno
3011 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
3012 system-provided lambda expression no longer cause warnings about
3013 unbound #:|pv-table| symbols.
3014 * bug fix: improved the handling of type declarations and the
3015 detection of violations for keyword arguments with non-constant
3017 * bug fix: potentially erronous calls to PATHNAME and
3018 MERGE-PATHNAMES were being flushed in some cases.
3019 (reported by Richard Kreuter)
3020 * bug fix: compiled calls to TYPEP were mishandling obsolete
3021 instances. (reported by James Bielman and Attila Lendvai)
3022 * bug fix: format strings with ~> without matching ~< no longer
3023 trigger an AVER, but signal an understandable error instead.
3024 (reported by Antonio Martinez)
3025 * bug fix: specifying an output-file without a pathname-type for
3026 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
3027 of input-file instead of "fasl". (reported by Robert Dodier)
3028 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
3029 (reported by James Y Knight).
3030 * bug fix: compiler-macros-function did not consider the environment
3031 argument for shadowing by local functions.
3032 * bug fix: compiler-macros expansion was inhibited by local INLINE
3034 * bug fix: inline expansions of known functions were subject to
3035 step-instrumentation in high debug policies, leading to problems
3036 with type-inference.
3037 * bug fix: compiler failed to differentiate between different CONS
3038 types in some cases.
3039 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
3040 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
3041 * bug fix: #368: incorrect use of expressed vs. upgraded array
3043 * bug fix: #306a: more precise unions of array types.
3044 * thread-safety improvements:
3045 ** CONDITION-WAIT could return early on Linux, if the thread was
3046 interrupted and subsequently continued with SIGCONT.
3047 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
3049 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
3050 * added support for the ucs-2 external format. (contributed by Ivan
3052 * minor incompatible change: pretty printing of objects of type
3053 (cons symbol) is, in the default pprint-dispatch-table, now
3054 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3056 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3057 called later in a class's lifetime, possibly as late as when the
3058 first instance of the class is created. Previously,
3059 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3060 class became finalizeable.
3061 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3062 for multibyte external-format streams. (thanks to "vbzoli")
3063 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3064 with :ALLOCATION :CLASS inherited from superclasses of the
3066 * fixed bug: anonymous classes can now be created using the :NAME
3067 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3068 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3069 * fixed bug: core-files saved with :EXECUTABLE T can again be
3070 executed when SBCL_HOME isn't set. (reported by James Knight)
3071 * fixed bug: toplevel LOCALLY forms with declarations could
3072 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3073 * fixed bug: printing from several different threads using different
3074 values of *print-case* could cause invalid output, due to
3075 some internal special variables of the printer not being bound
3076 thread-locally (reported by Max Mikhanosha)
3077 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3078 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3079 (reported by Pascal Costanza)
3080 * fixed bug: FINALIZE-INHERITANCE is called from
3081 REINITIALIZE-INSTANCE on classes when the class has previously
3082 been finalized, as required by AMOP.
3083 * minor code generation optimizations:
3084 ** better register allocation in CLOS dispatching functions
3085 ** overflow detection when coercing signed bytes to fixnums on x86-64
3086 ** is now implemented with one IMUL instruction instead of three shifts
3087 ** more efficient bit-vector access on x86 and x86-64
3088 ** more efficient access to raw structure slots on x86 and x86-64
3089 * fixed some bugs revealed by Paul Dietz' test suite:
3090 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3091 return its argument.
3093 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3094 * feature: thread support on Solaris/x86, and experimental thread support
3096 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3098 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3099 default method for SLOT-UNBOUND.
3100 * minor incompatible change: prevent the user from specializing the
3101 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3102 somewhat counter to the intent of the protocol, I (CSR) think, and
3103 additionally it just doesn't work in SBCL as currently
3104 implemented, thanks to optimizations (that are always valid for
3105 the other three SLOT-VALUEish functions, but not for the setter).
3106 * minor incompatible change: the :SB-LDB feature is now enabled by
3107 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3108 the low-level debugger.
3109 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3110 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3111 down to an SB-SYS:FD-STREAM, allowing direct communication in
3112 more cases. Temporary files and pipes are still used as a fallback
3114 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3115 on the non-reentrant C functions localtime(3) and gmtime(3).
3116 * bug fix: global optimization policy was not visible in LOCALLY and
3118 * bug fix: class objects can be used as specializers in methods.
3119 (reported by Pascal Costanza)
3120 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3121 with a type error. (reported by blitz_ on #lisp)
3122 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3123 failed with a type error. (reported by Pascal Bourguignon)
3124 * bug fix: merging pathnames against defaults with :DIRECTORY
3125 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3126 (reported by James Y Knight)
3127 * bug fix: saving large (>2GB) cores on x86-64 now works
3128 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3129 constant index and a (simple-array (signed-byte 32)) array
3130 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3131 error (patch by Robert J. Macomber)
3132 * feature: TIME now displays the amount of run-time spent in GC
3133 * bug fix: The debugger now does a better job of respecting
3134 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3135 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3136 workaround for bug 403.)
3137 * bug fix: floating point exception handling now works on FreeBSD
3138 (thanks to NIIMI Satoshi)
3139 * fixed some bugs revealed by Paul Dietz' test suite:
3140 ** MISC.641: LET-conversion were not supposed to work in late
3142 * improvements to the Win32/x86 port:
3143 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3144 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3146 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3147 * new feature: source path information is generated for macro-expansion
3148 errors for use in IDE's like Slime (thanks to Helmut Eller)
3149 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3150 * bug fix: compiler does not loop forever on an invalid type in
3152 * improvement: compilation of most CLOS applications is significantly
3154 * optimization: added a limited bytecode compiler for simple toplevel
3155 forms, speeding up compilation and FASL loading
3156 * bug fix: the statistical profiler now properly distinguishes anonymous
3159 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3160 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3161 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3162 into subclasses of the finalized class. Now user calls to
3163 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3164 system return before any subclasses are finalized.
3165 * minor incompatible change: The reader no longer ignores errors
3166 regarding non-existent packages in #+ and #- feature tests.
3167 * new feature: command line options --no-sysinit, --no-userinit to
3168 inhibit loading the corresponding init files
3169 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3170 for sending data through UDP sockets (thanks to François-René Rideau)
3171 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3172 error is signalled instead (thanks to François-René Rideau)
3173 * minor incompatible change: Error signalling behaviour of lexical
3174 operations violating package locks has changed slightly. Refer to
3175 documentation on package locks for details.
3176 * enhancement: EVAL can process IF-expressions without resorting to the
3178 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3179 constant-folded properly due to missing out-of-line functions.
3180 (reported by Mika Pihlajamäki)
3181 * bug fix: LISTEN sometimes returned T even in cases where no data was
3182 immediately available from the stream
3183 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3184 were reversed. (reported by Levente Mészáros)
3185 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3186 when given a vector displaced to an adjustable array. (reported
3188 * bug fix: derivation of float boundaries from numbers outside the
3189 appropriate float range (reported by John Wiseman)
3190 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3192 * bug fix: precomputing cache entries for generic functions with
3193 some subclasses of specializers as yet invalid does not attempt to
3194 fill a cache line with a negative offset. (reported by Levente
3196 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3197 allow condition class objects as arguments to DOCUMENTATION and
3198 (SETF DOCUMENTATION); only find and set documentation for
3199 structure names for the STRUCTURE doc-type. (suggested by Gary
3201 * improvements to the Win32/x86 port:
3202 ** (user-homedir-pathname) and default initialization file
3203 locations now know about the user's "Documents and Settings"
3204 directory (thanks to Yaroslav Kavenchuk)
3205 ** run-program is implemented (thanks to Mike Thomas)
3206 ** sockets support (thanks to Timothy Ritchey)
3207 ** better backtrace support (thanks to Alastair Bridgewater)
3208 ** sb-grovel supported
3209 ** asdf-install and sb-posix work somewhat
3210 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3211 * improvements to the Solaris/x86 port:
3212 ** works on Solaris 11/Solaris Express
3213 ** floating-point exception handling support
3214 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3215 * fixed some bugs revealed by Paul Dietz' test suite:
3216 ** REMOVE-METHOD returns its generic function argument even when
3217 the method is not one of the generic functions' methods.
3218 ** objects declared as MEMBER types can be admissible arguments to
3219 structure accessors.
3220 ** printing characters should simply be printed by the FORMAT ~:C
3222 ** compiler failure when compiling functions with hairy constant
3223 defaults for optional parameters.
3224 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3225 function, which is already optimized.
3227 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3228 * new platform: experimental support for SBCL x86/Darwin, including
3229 MacOS X 10.4.5 on Intel.
3230 * new feature: Unicode character names are now known to the system
3231 (through CHAR-NAME and NAME-CHAR).
3232 * new feature: the filesystem location of SBCL's core file is
3233 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3234 * minor incompatible change: the contrib modules SB-POSIX and
3235 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3236 this change is to make it easier to distribute
3237 location-independent binaries.
3238 * bug fix: as implied by AMOP, standardized classes no longer have
3239 slots named by external symbols of public packages. (reported by
3241 * optimization: calling functions via constant symbols -- as in
3242 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3243 via the function object as in (FUNCALL #'FOO).
3244 * optimization: on x86 and x86-64, the calling convention for the
3245 case of dealing with an unknown number of values has been altered
3246 to be friendlier to the prediction heuristics implemented,
3247 particularly with reference to CALL and RET pairing. (thanks to
3248 Alastair Bridgewater)
3249 * optimization: on x86, the code for access to thread-local symbol
3250 values and binding/unbinding of thread-local symbols is smaller.
3251 (thanks to Alastair Bridgewater)
3252 * enhancement: CONSTANTP is now able to determine constantness of
3253 more complex forms, including calls to constant-foldable standardized
3254 functions and some special forms beyond QUOTE.
3255 * fixed bug: occasional GC crashes on Solaris/x86
3256 * optimization: x86-64 supports stack allocation of results of simple
3257 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3258 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3259 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3260 (thanks to James Knight)
3261 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3262 by the standard (thanks to Stephen Compall)
3264 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3265 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3266 be used for bundling the runtime and the core file into one
3267 executable binary. This feature is not currently supported on all SBCL
3268 platforms. (thanks to James Bielman and NIIMI Satoshi)
3269 * new feature: a generational or ephemeral garbage collector is now
3270 the default on the PowerPC platform (both Linux and Darwin). The
3271 old Cheney (stop and copy) collector is a build-time option.
3272 (thanks to Cyrus Harmon, after Raymond Toy)
3273 * minor incompatible change: the method by which SBCL finds its
3274 contributed modules has changed; it no longer relies on symbolic
3275 links from an $SBCL_HOME/systems directory, but searches directly
3276 in the subdirectories of $SBCL_HOME.
3277 * enhancement: the dynamic heap size on the Linux/PPC platform is
3278 markedly larger, even using the older Cheney garbage collector.
3279 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3280 certain complicated string types. (reported by Gary King)
3281 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3282 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3283 * fixed bug: DOCUMENTATION on structures no longer signals an
3284 error if no structure type of the right name exists. (reported by
3286 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3287 applicable non-standard primary or :AROUND method on
3288 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3289 no longer cause unbound variable errors. (reported by Kevin Reid)
3290 * fixed bug: metacircle resolution in cases where methods have slots
3291 added before the slots from STANDARD-METHOD. (reported by Jean
3293 * fixed bug: the Power PC assembly code for calling into lisp
3294 sometimes computed its return address wrongly (depending on the
3295 15th bit of the address, fixed at link time). This used to
3296 manifest itself in a segmentation violation while building PCL.
3297 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3298 many others over the years)
3299 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3300 the stack pointer (treated as a signed integer) is negative.
3301 (thanks to Peter van Eynde)
3303 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3304 * new platform: experimental support for the Windows operating
3305 system has been added. (thanks to Alastair Bridgewater)
3306 * fixed several bugs in and robustified the PPC FFI (including
3307 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
3308 * bug fix: allow non-simple string symbol names (reported by Paul
3310 * bug fix: interrupt handling on NetBSD (thanks to Richard M
3312 * bug fix: saving a core corrupted callbacks on x86/x86-64
3313 * bug fix: closed a loophole in metacircularity detection and
3314 grounding in the PCL implementation of CLOS.
3315 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
3316 (reported by tomppa on #lisp)
3317 * bug fix: clear the direction flag on Lisp -> C transitions, as
3318 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3319 (reported by Andrej Grozin and Hendrik Maryns)
3320 * optimization: major improvements to GC efficiency on GENCGC platforms
3321 * optimization: faster implementation of EQUAL
3322 * optimization: emit more efficient opcodes for some common
3323 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3324 * optimization: several other minor code-generation improvements on x86-64
3325 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3327 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3328 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3329 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3330 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3331 by ANSI as a generic function, and for consistency (SETF
3332 GENERIC-FUNCTION-NAME) is treated likewise.
3333 * fixed bug #233.b: make constraint propagation notice when a variable
3334 value is changed after it is referenced but before it is used
3335 * fixed bug #296: no more arbitrary behaviour from filenames with
3336 odd characters as --load arguments. (reported by Adam Warner)
3337 * fixed bug #390: :CHARACTER-SET pathname components now work as
3338 expected. (reported by Tim Daly Jr)
3339 * fixed bug #391: complicated :TYPE intersections in slot
3340 definitions no longer cause an error in PCL internals.
3341 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3342 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3343 returning the number of octets which would be written to the
3344 file-stream. (thanks to Robert J. Macomber)
3345 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3346 arguments to the internal stream functions. (thanks to David
3348 * bug fix: stack exhaustion is now handled on the x86/SunOS
3349 platform. (thanks to Daisuke Homma)
3350 * bug fix: more accurate ROOM results on GENCGC platforms
3351 * optimization: improved type inference for arithmetic-for
3352 index variables in LOOP
3353 * optimization: faster floating-point SQRT on x86-64
3354 * fixed some bugs revealed by Paul Dietz' test suite:
3355 ** DOCUMENTATION returns NIL instead of "" for method combinations
3356 that don't have a docstring
3358 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3359 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3360 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3361 therefore are not customizeable by user code (as seems to be at
3362 least permitted and maybe required by AMOP). As a consolation,
3363 however, the SBCL implementation of these functions now calls
3364 REINITIALIZE-INSTANCE as specified by AMOP.
3365 * bug fix: slot-definition documentation is propagated as per ANSI
3366 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3367 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3368 argument, as do eslotd initialization methods. (from Pascal
3369 Costanza's "Closer" project)
3370 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3371 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3373 * bug fix: it is now possible to have more than one subclass of
3374 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3375 (reported by Bruno Haible, Pascal Costanza and others)
3376 * bug fix: the dependent update protocol now works for generic
3377 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3378 and Pascal Costanza)
3379 * bug fix: condition-class instances corresponding to
3380 DEFINE-CONDITION forms are now created eagerly. (reported by
3381 Kalle Olavi Niemitalo on comp.lang.lisp)
3382 * bug fix: floating point printing is more accurate in some
3383 circumstances. (thanks to Simon Alexander)
3384 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3385 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3386 * bug fix: callbacks on OS X now preserve stack-alignment.
3387 (thanks to Cyrus Harmon)
3388 * enhancement: the x86-64 disassembler is much better at
3389 disassembling SSE instructions. (thanks to Lutz Euler)
3390 * enhancement: CHECK-TYPE on a variable now allows type-inference
3391 (thanks to Vincent Arkesteijn)
3392 * optimization: improved performance of EUC-JP external format.
3393 (thanks to NIIMI Satoshi)
3394 * optimization: performance improvements to IO on file streams of
3395 :ELEMENT-TYPE CHARACTER
3396 * optimization: much faster memory allocation on x86-64
3397 * optimization: faster garbage collections (latency and throughput)
3399 * optimization: faster bignum subtraction and division on x86 and x86-64
3400 (thanks to Lutz Euler)
3401 * optimization: more accurate type-inference for loops that use a
3402 floating point index variable or a negative step.
3404 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3405 * bug fix: add a workaround to SBCL looping infinitely at startup on
3406 Linux kernels with apparently buggy implementations of personality().
3407 (thanks to Svein Ove Aas)
3408 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3409 (thanks to David Lichteblau)
3410 * bug fix: local bindings shadow global symbol macros for
3411 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3412 * optimization: non-open coded uses of numeric comparison operators
3413 (e.g. >) no longer cons when called with more than one parameter
3414 on platforms supporting dynamic-extent allocation.
3415 * enhancement: saving cores with foreign code loaded is now supported
3416 on MIPS/Linux in addition to the previously supported platforms.
3417 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3418 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3419 * bug fix: division by zero in sb-sprof when no samples were collected
3420 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3421 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3422 (thanks to Alexander Kjeldaas)
3423 * new feature: ignoring the return values of destructive functions
3424 like NREVERSE signals a compile-time style-warning.
3425 (thanks to Kevin Reid)
3426 * new feature: the alignment of alien structure fields can be
3427 explicitly specified. (thanks to Cyrus Harmon)
3428 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3429 and dump core on SIGQUIT
3431 ** incompatible change: threads do not inherit values of specials
3432 from their parents (see manual)
3433 ** bug fix: threads stacks belonging to dead threads are freed by the
3434 next exiting thread, no need to gc to collect thread stacks anymore
3435 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3436 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3437 ** bug fix: dynamic variable and thread start related gc lossage
3438 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3440 * fixed some bugs revealed by Paul Dietz' test suite:
3441 ** SUBTYPEP is slightly more accurate on heinously complicated
3442 CONS types where some of the members have uncertain (in the
3443 NIL, NIL sense) type relationships to each other.
3445 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3446 no longer purified unless :PURIFY T is explicitly specified.
3447 ** Non-purified cores are significantly smaller than before
3449 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3450 * new feature: timers based on Zach Beane's excellent timer package
3451 * added support for the following external formats: koi8-u,
3452 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3453 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3454 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3455 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3456 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3457 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3458 * incompatible change: a threaded SBCL will no longer revert to
3459 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3460 * bug fix: interrupts are disabled until startup is complete; no
3461 more sigsegvs when receiving a signal to soon
3462 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3464 * bug fix: add a workaround for the memory randomization features in
3465 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3466 workaround will only be in effect on systems with the proc filesystem
3468 * bug fix: printing objects of type HASH-TABLE signals a
3469 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3471 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3472 have been running for over 50 days. (reported by Gilbert Baumann)
3473 * bug fix: the logic for getting names of functions gets less
3474 confused when confronded with alternate-metaclass
3475 funcallable-instances. (reported by Cyrus Harmon)
3476 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3477 consistent, even on internal alternate-metaclass objects.
3478 * bug fix: flush closure information collected by physical
3479 environment analysis prepass before the main pass. (bug reported
3481 * bug fix: compiler pack phase does not modify a hashtable, which is
3482 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3483 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3484 may be expanded. (reported by Alexander <malishev> on c.l.l)
3485 * bug fix: no more style-warnings when compiling code using LAST
3486 under high-SPEED low-SPACE settings. (reported by David Wallin
3488 * fixed some incompatibilities between SBCL's MOP and the MOP
3490 ** the METAOBJECT class is now implemented;
3491 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3492 STANDARD-OBJECT, as required;
3493 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3494 now compatible (as required by VALIDATE-SUPERCLASS); there
3495 remains a consistency requirement over the presence or absence
3496 of the FUNCTION class in the superclass list of finalized
3497 classes; see the manual for more details;
3498 ** the :AROUND method for COMPUTE-SLOTS on
3499 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3500 requested slot ordering.
3502 ** bug fix: parent thread now can be gc'ed even with a live
3504 ** bug fix: binding a special with PROGV to no value is not
3505 the same as that symbol not having been bound (thanks to
3507 ** bug fix: binding specials is thread safe (thanks to
3509 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3510 and SB-SPROF do not die with 'no handler for signal XX in
3511 interrupt_handle_now(..)' anymore
3512 ** bug fix: WITH-TIMEOUT works with multiple running threads
3513 * fixed some bugs revealed by Paul Dietz' test suite:
3514 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3515 the :method-class keyword argument.
3517 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3518 * new port: the Solaris operating system on x86 processors is now
3519 mostly supported, though some rough edges in the environment
3520 remain. (thanks to Daisuke Homma)
3521 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3522 space for its heap. (thanks to Thiemo Seufer)
3523 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3524 closures. (thanks to Thiemo Seufer)
3525 * minor incompatible change: eof selects abort in the debugger.
3526 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3527 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3529 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3530 deprecated, and will go away in a future revision of SBCL.
3531 * minor incompatible change: GC-ON and GC-OFF are no longer
3532 implemented with a counter, it does not matter how many times gc
3533 is switched on or off
3534 * bug fix: discriminating functions for generic function classes
3535 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3536 make invalid assumptions about method precedence order. (reported
3538 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3539 platforms. (thanks to Thiemo Seufer)
3540 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3541 * bug fix: correct pathname printing with printer escaping is on.
3542 (thanks to Kevin Reid)
3543 * bug fix: complex VOP definitions in "user-space" no longer trigger
3544 package locks. (reported by Zach Beane)
3545 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3546 for funcallable-instance functions, and is no different from
3548 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3549 characters in the current readtable. (reported by Nicholas Neuss)
3550 * bug fix: SUBTYPEP on various CONS types returns more a more
3551 accurate acknowledgment of its certainty.
3552 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3553 lists in some cases. This partially fixes bug 384.
3554 * flush all standard streams before prompting in the REPL and the
3556 * bug fix: signal handling and triggering gc do not conflict
3557 directly anymore, in particular a high frequency sb-sprof does
3558 not prevent gc from running
3559 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3560 approximation for timezone and DST information between the
3561 universal time epoch and the smallest negative 32-bit time_t.
3562 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3563 year 1899 so long as the encoded time is non-negative.
3564 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3565 the correct answer for non-constant rotate amounts when performing
3566 an inline 32-bit rotation.
3568 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3569 there is only one thread in the session
3570 ** bug fix: memory leak for streams created in one thread and
3571 written to in another
3572 ** bug fix: lockup when compiled with gcc4
3573 ** bug fix: race that allows the gc to be triggered when gc is
3575 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3576 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3578 ** bug fix: finished threads are gc'ed properly
3579 * fixed some bugs revealed by Paul Dietz' test suite:
3580 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3581 has arguments with a different set of applicable methods from
3582 the orignal arguments.
3583 ** The type error thrown by MAP now has a correct expected-type
3585 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3586 name a compiled function.
3587 ** Three MISC tests where a large bignum was improperly coerced to
3588 a float that couldn't represent that bignum during type
3589 derivation were fixed.
3590 ** SUBTYPEP can now handle types involving the negation of a
3591 list-form FUNCTION type.
3592 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3593 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3594 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3596 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3597 * New feature: Experimental support for bivalent streams: streams
3598 opened with :element-type :default now allow character and binary
3599 (unsigned-byte 8) I/O
3600 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3601 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3603 * bug fix: no more highly sporadic "couldn't check whether ~S is
3604 readable" when reading a stream and an interrupt hits in the middle
3605 of a select system call
3606 * compiler better recognizes complex arrays (reported by Eduardo
3608 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3609 for variables on SBCL built with linkage-tables. (reported by Luis
3611 * various error reporting improvements.
3612 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3613 (Thanks to Thiemo Seufer)
3614 * bug fix: nested reader invokations work correctly
3615 * bug fix: it is possible to have simultaneous references to foreign
3616 code and foreign data with the same name.
3618 ** added x86-64 support
3619 ** incompatible change: the threading api now works with thread
3620 objects instead of thread ids
3621 ** bug fix: threads are protected from signals and interruption when
3622 starting up or going down
3623 ** bug fix: a race where an exiting thread could lose its stack to gc
3624 ** bug fix: don't halt on infinite error in threads if possible
3625 ** fixed numerous gc deadlocks introduced in the pthread merge
3626 ** bug fix: fixed thread safety issues in read and print
3627 ** bug fix: debugger doesn't hang on session lock if interrupted at
3628 an inappropriate moment
3629 ** bug fix: run-program is now thread safe(r)
3630 ** bug fix: inner with-recursive-lock no longer releases the mutex
3631 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3632 * fixed some bugs revealed by Paul Dietz' test suite:
3633 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3634 EXPECTED-TYPE slots filled.
3635 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3637 ** MAKE-CONDITION accepts classes as type-designators.
3638 ** COMPILE may never return NIL.
3639 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3640 range before calling Unix time functions
3642 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3643 * numerous signal handling fixes to increase stability
3644 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3645 * minor incompatible change: we now correctly canonize default
3646 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3647 as per the MOP, rather than the historical (INITARG INITFUNCTION
3648 INITFORM). (reported by Bruno Haible)
3649 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3650 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3651 for more information.
3652 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3653 pathname is a directory pathname.
3654 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3655 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3657 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3658 :METACLASS argument in addition to a class name. (reported by
3659 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3660 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3661 (reported by Bruno Haible; patch from Gerd Moellmann)
3662 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3664 * bug fix: more cleanups to the floating point exception handling on
3665 x86-64 (thanks to James Knight)
3666 * bug fix: the compiler does not try to constant fold calls of
3667 COERCE and BIT-* functions when they return freshly constructed
3668 objects. (reported by Nikodemus Siivola and Paul Dietz)
3669 * optimization: improved the MIPS versions of generic (in the
3670 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3671 * optimization: direct conversion of (unsigned-byte 32) to floats on
3672 the PowerPC platform.
3673 * optimization: structure instances with raw slots now use less
3674 memory, and probably show better memory locality. (thanks to
3676 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3677 are treated as requests for stack allocation on the x86-64,
3678 Alpha-32, PPC and SPARC platforms.
3679 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3680 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3681 (thanks to Tony Martinez)
3683 ** gcing a dead thread can no longer lead to lockups
3684 ** threads block signals until they are set up properly
3685 ** errno is no longer shared by threads
3686 ** interrupt-thread restores the eflags register on x86
3687 ** fixed some lockups due to gc/thread interaction
3688 * fixed some bugs revealed by Paul Dietz' test suite:
3689 ** invalid dotted lists no longer raise a read error when
3690 *READ-SUPPRESS* is T
3691 ** signal an error if a symbol that names a declaration is used
3692 as the name of a type, or vice versa
3693 ** allow using the (declare (typespec var*)) abbreviation for
3694 (declare (type typespec var*)) with all type specifiers
3695 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3696 ** always return NIL from PPRINT-POP when OBJECT is NIL
3697 ** don't signal errors when pretty-printing malformed LABELS,
3698 FLET or MACROLET forms
3699 ** declarations in a DOLIST body are also in scope for the
3701 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3703 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3706 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3707 * fixed cross-compiler leakages that prevented building a 32-bit
3708 target with a 64-bit host compiler.
3709 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3710 opened with :IF-EXISTS :OVERWRITE.
3711 * fixed bug 281: error for an invalid qualifier in a short-form method
3712 combination method is not signalled until the faulty method is called.
3713 * bug fix: iteration variable type inferrer failed to deal with open
3714 intervals. (reported by Alan Shields)
3715 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3716 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3717 or more runtime options were provided to the sbcl binary.
3718 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3719 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3720 * optimization: there's now a fast-path for fixnum arguments in the
3721 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3722 * optimization: the code generated on x86-64 is more compact thanks
3723 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3724 * bug fix: floating-point exception handling now partly works on
3725 x86-64. (Thanks to James Knight)
3726 * improvement to the MIPS backend from Thiemo Seufer: C-style
3727 64-bit long long arguments and return values to alien functions
3729 * fixed some bugs revealed by Paul Dietz' test suite:
3730 ** the type-error signalled from WARN has a filled-in DATUM slot.
3731 ** the type-error required when a stream is not associated with
3732 a file has the stream as its datum.
3733 ** type-errors on single-floats on x86-64 no longer have
3734 :INVALID-OBJECT as the datum
3735 ** the type-errors signalled for invalid function names now have
3736 a correct expected type
3737 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3738 for structures defined with a :TYPE. Documentation strings for
3739 typed structures are no longer immediately discarded
3740 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3741 broadcast streams and synonym streams. FILE-LENGTH now also works
3742 on broadcast streams.
3744 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3745 * incompatible change: the --noprogrammer option, deprecated since
3746 version 0.7.5, has been removed. Please use the equivalent
3747 --disable-debugger option instead.
3748 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3750 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3751 inoperational for a while now) has been completely removed.
3752 * null lexical environments are now printed as #<NULL-LEXENV>,
3753 significantly reducing the amount of clutter in typical backtraces.
3754 * documentation on weak pointers, finalization, and after GC hooks
3755 has been added to the manual.
3756 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3757 as other specialized array types, is much faster. SUBSEQ and
3758 COPY-SEQ on such arrays have also been sped up.
3759 * optimization: EQL is now more efficient when at least other argument
3760 is known to be of type (OR FIXNUM (NOT NUMBER)).
3761 * fixed bug: the runtime is now less vulnerable to changes in the
3762 size of the SBCL object on OS X, and virtual memory is reserved for
3763 all spaces that need to be at a fixed address.
3764 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3765 * fixed bug: finalizers and after GC hooks that cause consing are now
3767 * fixed bug: compiler error messages and summaries are now printed to
3768 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3769 * fixed inference of the upper bound of an iteration variable.
3770 (reported by Rajat Datta).
3771 * fixed bug 211e: calling local functions with duplicated constant
3772 keyword argument no longer causes a bogus style warning about an
3774 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3775 ftype declaration to be disregarded. (reported by Dave Roberts)
3776 * fixed bug 373: caused by erronous compilation of references to alien
3777 variables in the runtime on ppc/darwin.
3778 * fixed bug 376: CONJUGATE type deriver.
3779 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3780 (reported by Baughn on #lisp)
3781 * a cross-compiler bug on non-x86 platforms has been identified and
3782 fixed. (thanks to Bruno Haible)
3783 * improvements to the MIPS runtime code for increased stability.
3784 (thanks to Thiemo Seufer)
3785 * increased the maximimum compact environment size to allow
3786 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3787 * partial workaround for bug 135: don't name the function we're
3788 calling for hairy cases of EVAL, so as not to accumulate one environment
3789 entry per call to EVAL. (reported by Kevin Reid)
3790 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3791 * optimization: type testing for non-vector arrays should be faster.
3792 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3794 * bug fix: setting 31st element of a bit vector to zero did not work
3796 * bug fix: redefining a class definition which failed due to a
3797 previous accessor / function clash now works (but see BUGS entry
3798 #380 for more problems in this area). (thanks to Zach Beane)
3799 * the long form of DEFINE-METHOD-COMBINATION disables method group
3800 checking when given a single method group with pattern *. (thanks
3802 * on x86 compiler supports stack allocation of results of simple
3803 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3804 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3805 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3806 * fixed some bugs related to Unicode integration:
3807 ** the restarts for recovering from input and output encoding
3808 errors only appear when there is in fact such an error to
3810 * fixed some bugs revealed by Paul Dietz' test suite:
3811 ** MISC.549 and similar: late transformation of unsafe type
3812 assertions into derived types caused unexpected code
3814 ** SCALE-FLOAT type deriver is less wrong.
3815 ** type derivers for EXP, LOG and similar functions compute result
3816 types for complex arguments better.
3817 ** (MISC.563) CONJUGATE type deriver works for very restricted
3819 ** out-of-line type testers for character strings are available.
3820 ** EQUAL compiler transform understands specialness of objects
3822 ** accessing double-floats stored on the stack now works on x86-64.
3823 ** debugger internals could sometimes create invalid lispobjs,
3824 resulting in GC crashes.
3825 ** MISC.548: type check weakening can convert required type into
3827 ** initialization forms for bindings are not in scope of free special
3830 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3831 * incompatible change: thread support for non-NPTL systems has
3832 been removed - locking is buggy and unreliable. A threaded
3833 SBCL build will now warn at startup and refuse to create
3834 new threads, unless futex support is detected in the kernel
3835 * incompatible change: the top level REPL now has only an ABORT
3836 restart associated with it, not TOPLEVEL and ABORT as it used to.
3837 TOP and TOPLEVEL are now available as debugger commands for
3838 returning to the top level.
3839 * incompatible change: forms evaluated in the REPL now use the
3840 global optimization policy.
3841 * incompatible change: user- and system-initialization files are
3842 no longer processed with LOAD, but by READ and EVAL; hence the
3843 global optimization policy, startup package, readtable, etc,
3845 * The .fasl file format number has been incremented because of
3846 various incompatible changes.
3847 * internal entry point details and argument counts no longer appear
3848 in backtraces unless explicitly requested by setting
3849 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3850 * built-in and standard functions no longer have names like "top
3851 level local call to FOO".
3852 * fixed bug 32: functions defined in non-null lexical environments
3853 now have more legible printed representation
3854 * fixed bug 33: functions defined in non-null lexical environemnts
3855 are now more amenable to inspection by INSPECT.
3856 * workaround for bug 354: XEPs no longer appear in backtraces unless
3857 explicitly requested.
3858 * fixed bug: receiving the signal which results from attempting to
3859 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3860 SIGBUS on other *BSDs) on architectures where the C stack is also
3861 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3862 to debugger confusion or wild instability. (reported by Cheuksan
3864 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3865 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3866 (reported by Lutz Euler)
3867 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3868 compiled code. (reported by Paul Dietz)
3869 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3870 specialized parameter to a method to something that is not TYPEP
3871 the specializer is now possible.
3872 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3873 face of package deletion.
3874 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3875 pathname. (reported by David Tolpin on c.l.l)
3876 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3877 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3878 STRING-STREAM and FILE-STREAM, respectively.
3879 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3880 than previously; in addition, its test suite is now run on build.
3881 (thanks to Luke Gorrie)
3882 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3883 * optimization: added a immediate representation for single-floats
3885 * fixed some bugs revealed by Paul Dietz' test suite:
3886 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3887 ** attempting to create a package with a colliding nickname causes
3888 correctable errors to be signalled.
3889 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3890 ** several x86-64 backend bugs related to sign-extension of immediate
3893 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3894 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3895 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3897 * fixed loading of multiply forward-referenced layouts.
3898 (thanks to Cheuksan Wang)
3899 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3900 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3901 (see COMPILE-FILE documentation for details of :PRINT option)
3902 * fixed bugs 19 and 317: fixed-format floating point printing is
3903 more accurate. This also fixes a bug reported by Adam Warner
3904 related to the ~@F format directive.
3905 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3907 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3908 dispatch table if the from-char is a dispatch macro character.
3909 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3910 by the wordsize no longer ignore the last word. (reported by Lutz
3912 * fixed bug in type checking of dynamic-extent variables. (reported
3914 * optimization: sequence traversal functions use their freedom to
3915 coerce function designators to functions.
3916 * optimization: code with many calls to CLOS methods specialized on
3917 CLOS classes has had redundant type checks removed.
3918 * optimization: added declarations to speed up operations that access
3919 the internal character database (for example STRING-UPCASE)
3920 * optimization: comparison operations between floats and sufficiently small
3921 fixnums no longer create extra rationals
3922 * fixed some bugs related to Unicode integration:
3923 ** portions of multibyte characters at the end of buffers for
3924 character-based file input are correctly transferred to the
3925 start of the buffer at the next read.
3926 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3927 passing it through to OPEN.
3928 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3929 argument given to internal calls to OPEN.
3930 ** the built-in comment readers (introduced by character sequences
3931 ";" and "#|") are more forgiving to encoding errors; they will
3932 STYLE-WARN and then attempt to resync the stream at a character
3933 boundary. (thanks to Teemu Kalvas)
3934 * fixed some bugs in the x86-64 port:
3935 ** Negative short int return values from c-calls are sign-extended
3937 ** The stack is aligned to 16-bytes for c-calls, as required by
3938 the ABI. (thanks to Cheuksan Wang)
3939 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3940 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3941 for enums. (thanks to Vincent Arkesteijn)
3942 ** Multiple small optimizations and bugfixes for floating point
3944 * fixed some bugs revealed by Paul Dietz' test suite:
3945 ** Space, Tab, Linefeed, Return and Page have the invalid
3946 secondary constituent character trait.
3947 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3949 ** WITH-INPUT-FROM-STRING should only update the index place on
3951 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3952 works more reliably.
3953 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3954 with one-dimensional arrays with fill pointers.
3955 ** TYPE-OF failed on a complex with an integer realpart and a
3957 ** compiler failure during type inference for the code of form
3958 (IF (EQL X (THE ...)) ...) (MISC.535).
3960 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3961 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3962 platform. The port supports 61-bit fixnums, large memory spaces
3963 and reloading shared object files.
3964 * enhancement: saving cores with foreign code loaded is now
3965 supported on ppc/Darwin in addition to the previously supported
3967 * enhancement: the statistical profiler now walks deeper into the
3968 call stack for more meaningful call-graphs and accrued time
3969 reports (x86/x86-64 only). It also now reports time spent in
3971 * enhancement: it is now possible to trace most individual methods
3972 of a generic function in addition to tracing the generic function
3974 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3976 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3977 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3978 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3979 produces an error. (thanks to Vincent Arkesteijn)
3980 * bug fix: NAMESTRING on pathnames with :WILD components in their
3981 directories works correctly. (thanks to Artem V. Andreev)
3982 * fixed bug 125: compiler preserves identity of closures. (reported
3984 * bug fixed: functions with &REST arguments sometimes failed with
3985 "Undefined function" when compiled with (DEBUG 3). (reported by
3987 * bug fix: overflow during compiling of setting element of a bit
3988 vector with constant index and value. (reported by Timmy Douglas)
3989 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3990 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3991 * on x86 compiler partially supports stack allocation of dynamic-extent
3993 * GO and RETURN-FROM do not check the extent of their exit points
3994 when compiled with SAFETY 0.
3995 * fixed some bugs related to Unicode integration:
3996 ** encoding and decoding errors are now much more robustly
3997 handled; it should now be possible to recover even from invalid
3998 input or output to the terminal. (thanks to Teemu Kalvas)
3999 ** provided a first cut at implementing STRING-TO-OCTETS and
4000 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
4001 ** altered the SB-MD5 contributed module slightly, changing the
4002 interface just enough for it to be supportable for builds where
4003 lisp characters are not eight bits.
4004 * fixed some bugs revealed by Paul Dietz' test suite:
4005 ** the FORMATTER-generated functions for ~V[ conditionals require
4006 the correct number of arguments.
4007 ** READ-FROM-STRING returns the mandated second value when applied
4008 to displaced strings.
4009 ** the #\Rubout and #\Backspace characters are treated as invalid
4010 constituent characters by the tokenizer.
4012 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
4013 * new feature: reloading changed shared object files with
4014 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4015 * new feature: references to foreign variables and functions
4016 can now be compiled and loaded before the corresponding shared
4017 object file is loaded, as long as the foreign definitions are
4018 available at runtime.
4019 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
4020 supported. (thanks to Dan Debertin)
4021 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
4022 just keywords. (thanks to Vincent Arkesteijn)
4023 * fixed bug #331: structure-class instances corresponding to
4024 DEFSTRUCT forms are now created eagerly.
4025 * fixed bug #345: backtraces from calls to undefined functions work
4026 on x86 as well. Related bug #61 is now also partially fixed on x86
4027 (backtraces from throws to unknown catch tags.)
4028 * bug fix: lambda-list parsing is now stricter vrt. order and number
4029 of lambda-list keywords.
4030 * bug fix: as specified by AMOP, an error is signalled if a
4031 class-option appears multiple times in a DEFCLASS form. (reported
4033 * bug fix: RANDOM can be compiled when the compiler derives the type
4034 of its numeric argument as a disjoint set of small integers.
4035 (reported by Paul Dietz)
4036 * bug fix: starting a core saved with shared objects loaded when
4037 those objects are not available no longer causes threaded SBCL to
4038 hang. (reported by Sean Ross)
4039 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
4041 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
4042 argument, which must always be NIL. (reported by Kalle Niemitalo)
4043 * bug fix: printing 1.0d+23 no longer results in an error.
4044 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
4045 * bug fix: structure slot setters preserve evaluation order. (thanks
4047 * fixed some bugs related to Unicode integration:
4048 ** RUN-PROGRAM can allow its child to take input from a Lisp
4049 stream. (reported by Stefan Scholl)
4050 ** ASDF-INSTALL successfully downloads .tar.gz files in all
4051 locales. (reported by Ken Causey)
4052 * fixed some bugs revealed by Paul Dietz' test suite:
4053 ** INCF, DECF and REMF evaluate their place form as specified in
4055 ** FORMATTER expands ~{ ~} iteration directives with V or #
4056 parameters correctly.
4057 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4058 consequent uses no arguments correctly.
4059 ** the system has a partial understanding of the (COMPLEX RATIO)
4061 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4064 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4065 * new feature: a build-time option (controlled by the :SB-UNICODE
4066 keyword feature, enabled by default) for building the system with
4067 support for the entire 21-bit character space defined by the
4069 * new feature: the system now has rudimentary external-format
4070 support; the primary user-visible change at this time is that
4071 characters with the high bit set (such as lower-case-e-acute) will
4072 print correctly to a terminal in a UTF-8 environment.
4073 * minor incompatible change: BASE-CHAR no longer names a class;
4074 however, CHARACTER continues to do so, as required by ANSI.
4075 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4076 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4077 has been moved to the SB-EXT package (temporarily re-exported from
4079 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4080 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4082 * fixed bug #351: better error-handlind and reporting for malformed
4084 * fixed bug #350: bignum-printing is now more memory-efficient,
4085 allowing printing of very large bignums, eg. (expt 2 10000000).
4086 (reported by Bruno Haible)
4087 * fixed bug #302: better primitive-type selection for intersection
4089 * fixed bug #308: non-graphic characters now all have names, as
4090 required. (reported by Bruno Haible)
4091 * bug fix: redefining a class with different superclasses now correctly
4092 removes it from the direct-subclasses of its previous superclasses.
4093 (reported by David Morse)
4094 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4095 new value now works. (reported by Bruno Haible)
4096 * bug fix: correct canonicalization of multiple non-standard slot
4097 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4098 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4099 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4100 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4101 now exists, an signals an error.
4102 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4103 during macroexpansion for non-iteration variables as well. (reported
4104 by Bruno Haible for CMUCL)
4105 * bug fix: Cyclic structures and unprintable objects in compiler
4106 messages no longer cause errors. (reported by Bruno Haible)
4107 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4108 and READ-FROM-STRING all now return a primary value of NIL if
4109 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4110 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4111 (reported by Bruno Haible for CMUCL)
4112 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4113 do not designate a condition. (reported by Bruno Haible for
4115 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4116 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4117 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4118 permitting resolution in favour of any of the conflicting symbols.
4119 (reported by Bruno Haible for CMUCL)
4120 * bug fix: EQUAL compiler optimizations is less aggressive on
4121 strings which can potentially compare true despite having distinct
4122 specialized array element types.
4123 * bug fix: unit enumerations can be defined without dividing by
4124 zero. (thanks to Vincent Arkesteijn)
4125 * FORMAT compile-time argument count checking has been enhanced.
4126 (report from Bruno Haible for CMUCL)
4127 * a partial workaround for the bug 262: the compiler does not try to
4128 inline-expand a local function doing RETURN-FROM from a deleted
4129 BLOCK. (thanks to Peter Denno for the bug report and to David
4130 Wragg for the simple test case)
4131 * fixed some bugs revealed by Paul Dietz' test suite:
4132 ** RENAME-PACKAGE allows all package designators as new package
4134 ** constraint propagation and lambda variable substitution are
4135 more cautious in dealing with partially deleted code.
4136 ** compiler sometimes lost reoptimization passes.
4137 ** CERROR, given a condition as condition designator, passes its
4138 remaining arguments to the continue format control without
4140 ** Case-altering FORMAT directives work correctly on non-ASCII
4142 ** The REAL type specifier handles bounds outside the floating
4143 point ranges without signalling FLOATING-POINT-OVERFLOW.
4144 ** Functions with IR1-transformations can create intercomponent
4145 references to global functions.
4146 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4148 ** FORMAT ~R treats a nil value for its first parameter correctly.
4150 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4151 * enhancement: saving cores with foreign code loaded is now
4152 supported on x86/NetBSD and sparc/Linux in addition to the previously
4153 supported platforms.
4154 * bug fix: on some platforms repeated installations caused multiple
4155 copies of HTML documentation to be installed -- should not happen
4156 any more. (reported by Stefan Scholl)
4157 * bug fix: parsing self-recursive alien record types multiple times
4158 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4159 original patch by Helmut Eller for CMUCL)
4160 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4161 (thanks to Richard Kreuter)
4162 * bug fix: defining classes whose accessors are methods on existing
4163 generic functions in other (locked) packages no longer signals
4164 bogus package lock violations. (reported by François-René Rideau)
4165 * bug fix: special variables as DEFMETHOD parameters no longer have
4166 associated bogus type declarations. (reported by David Wragg and
4168 * bug fix: read-write consistency on streams of element-type
4169 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4170 * bug fix: redefiniton of the only method of a generic function with
4171 no DEFGENERIC no longer emits a full WARNING. In addition,
4172 redefinition of generic functions with no DEFGENERIC to an
4173 incompatible lambda list now signals an error. (thanks to Zach
4175 * bug fix: DEFGENERIC now works even when there's a function of the
4176 same name in an enclosing lexical environment. (thanks to Zach
4178 * fixed compiler failure, caused by instrumenting code during
4179 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4180 * optimization: added loop analysis and improved register allocation
4181 * fixed some bugs revealed by Paul Dietz' test suite:
4182 ** POSITION on displaced vectors with non-zero displacement
4183 returns the right answer.
4184 ** (SIMPLE-STRING) is a valid type specifier for sequence
4186 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4188 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4189 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4191 ** The justification version of the FORMAT ~< directive treats
4192 non-zero minpad parameter correctly.
4194 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4195 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4196 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4197 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4198 the supported interface.
4199 * new feature: Single-stepping of code compiled with DEBUG 2 or
4200 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4201 * new feature: saving cores with foreign code loaded is now
4202 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4203 Timothy Moore's work for CMUCL)
4204 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4205 parameters to * instead of NIL if no initform is supplied.
4206 (reported by Johan Bockgaard)
4207 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4208 correctly when FUNCALL appears as the car of the form. Note:
4209 despite this FUNCALL forms are not currently subject to
4210 compiler-macro expansion. (port of Raymond Toy's fix for the
4211 same from CMUCL, reported by Johan Bockgaard)
4212 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4213 (thanks for Teemu Kalvas)
4214 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4215 case instead of terminating the iteration (thanks for Julian
4216 Squires, Sean Champ and Raymond Toy)
4217 * bug fix: incorrect expansion of defgeneric that caused a style
4218 warning. (thanks for Zach Beane)
4219 * bug fix: slot accessor effective method computation works properly
4220 for classes with multiple non-standard applicable methods on
4221 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4222 * on x86 compiler supports stack allocation of results of LIST and
4223 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4224 CMUCL implementation by Gerd Moellmann)
4225 * fixed some bugs revealed by Paul Dietz' test suite:
4226 ** FORMAT strings with both the ~<~:;~> form of the justification
4227 directive and pretty-printing directives cause an error.
4229 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4230 * incompatible change: the internal functions
4231 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4232 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4233 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4234 instead of the old functions.
4235 * new feature: on platforms where "dladdr" is available foreign
4236 function names now appear in backtraces. (based on Helmut Eller's
4238 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4239 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4241 * documentation: ASDF manual is now distributed with SBCL.
4242 * bug fix: SBCL can now load its contributed modules with REQUIRE
4243 even if the system-provided entries have been removed from
4244 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4246 * bug fix: backtraces involving undefined functions or assembly
4247 routines are more informative. (thanks to Brian Downing)
4248 * bug fix: mutually referent alien structures now work correctly.
4249 (reported by Rick Taube)
4250 * bug fix: structures defined by WITH-ALIEN can be referred to
4251 within other definitions in the same WITH-ALIEN.
4252 * bug fix: division operators (MOD, TRUNCATE and the like) with
4253 constant zero divisors and integer dividends no longer generate
4255 * bug fix: provide default methods for INPUT-STREAM-P and
4256 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4257 * bug fix: improve the detection and resolution of MOP metacycles
4258 (where effective method computation depends on the generic function
4259 having its effective method computed). (reported by Bruno Haible)
4260 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4261 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4262 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4263 * bug fix: pathnames with relative directory components can be
4264 represented relative to default pathnames.
4265 * optimization: in taking the GCD of bignums, reduce the two bignums
4266 to approximately the same size (using Euclid's algorithm) before
4267 applying the more sophisticated binary GCD. (thanks to Juho
4269 * optimization: COUNT on bitvectors now operates word-at-a-time.
4270 * optimization: ASH with a positive, but not necessarily constant,
4271 (leftwards) shift, when in a modular context, is compiled to a
4273 * fixed some bugs revealed by Paul Dietz' test suite:
4274 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4275 if the corresponding argument is NIL.
4276 ** FORMAT directives accepting a minpad parameter treat negative
4278 ** literal commas as character parameters to FORMAT directives are
4280 ** literal spaces directly after ~<Newline> directives within a
4281 format-logical-block (~:< ~@:>) do not induce :FILL-style
4282 conditional newlines.
4283 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4284 as specified: it no longer includes conditional newlines).
4285 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4287 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4288 :PER-LINE-PREFIX argument does not evaluate to a string.
4290 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4291 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4292 the manual for details; for now, package locks can be disabled by
4293 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4294 if no major problems are found then it is likely that they will be
4295 compiled in unconditionally.
4296 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4297 unsupported operators on all platforms. To load a shared library
4298 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4299 object file, link it into a shared library outside of SBCL and
4300 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4302 * bug workaround: ROOM T and the GC were not working together
4303 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4304 reporting facility aren't preserved. That reporting has been
4305 disabled, so now until and unless someone figures out how to make it
4306 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
4307 * minor incompatible change: as threatened around sbcl-0.8.0, the
4308 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
4309 The symbols are also exported from SB-PCL for backwards
4310 compatibility, but more so than before SB-PCL should be treated as
4311 an implementation-internal package.
4312 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
4314 * the SB-SPROF contrib now works on (most) non-x86 architectures.
4315 It is known as of this release not to work on the Alpha, however.
4316 * fixed bug #167: errors signalled due to illegal syntax in method
4317 bodies are now more legible.
4318 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4319 designators and can hence be used with TYPEP.
4320 * fixed bug #333: CHECK-TYPE now ensures that the type error
4321 signalled, if any, has the right object to be accessed by
4322 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4323 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4324 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4326 * fixed bug #334: programmatic addition of slots using specialized
4327 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4328 and :ALLOCATION :CLASS slots.
4329 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4330 float exponents. (rereported by Peter Seibel)
4331 * fixed a bug: #\Space (and other whitespace characters) are no
4332 longer considered to be macro characters in standard syntax by
4333 GET-MACRO-CHARACTER.
4334 * fixed bug: initialization of condition class metaobjects no longer
4335 causes an instance of the condition to be created. (reported by
4337 * fixed bug: it is now possible to have slots such that
4338 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4339 description is neither :INSTANCE nor :CLASS.
4340 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4341 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4342 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4343 non-standard SLOT-DEFINITION-ALLOCATION values.
4344 * fixed bugs: various race conditions handling exiting threads.
4345 CL-PPCRE's thread torture test now passes.
4346 * fixed arguably-a-bug: GC time proportional to number of threads in
4347 system even when most of them are idle
4348 * optimization: improved performance of BIT and SBIT on bit-vectors.
4349 * .fasl file incompatibility: The fasl file version number has
4350 been incremented because of changes associated with package locks.
4352 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4353 * minor incompatible change: the system no longer provides
4354 optimization hints (conditions which are TYPEP
4355 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4356 mode; these hints are still emitted when higher SPEED optimization
4358 * new contrib module: a sampling profiler (profiling by statistical
4359 sampling, rather than by instrumenting functions) is available as
4360 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4361 * the behaviour of the standard function ED is now customizeable by
4362 third parties through a hook variable: see ED's documentation
4363 string for information on the protocol.
4364 * the compiler no longer emits efficiency notes for (FUNCALL X)
4365 when the type of X is uncertain under default optimization
4367 * fixed bug 276: mutating a binding of a specialized parameter to a
4368 method to something that is not TYPEP the specializer is now
4370 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4371 exhibit the required behaviour on the x86 platform. (thanks to
4372 Peter van Eynde, Eric Marsden and Bruno Haible)
4373 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4374 even for difficult arguments. (reported by Peter Graves)
4375 * fixed bug 141a: the backquote printer now descends quoted
4377 * fixed another bug in backquote printing: no more destructive
4378 modification of the form's list structure. (reported by Brian
4380 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4381 move between its address being taken and the call to
4382 interrupt_thread, fixing a crashing race condition.
4383 * the SB-POSIX contrib implementation has been adjusted so that it
4384 no longer exhibits ridiculously poor performance when constructing
4385 instances corresponding to C structs.
4387 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4388 * minor incompatible change: the sb-grovel contrib now treats C
4389 structures as alien (in the sense of SB-ALIEN) objects rather than
4390 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4391 has implications for memory management of client code
4392 (sb-grovel-returned objects must now be manually managed) and for
4393 type safety (alien objects now have full types).
4394 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4395 used to control emission of compiler diagnostics, rather than the
4396 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4397 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4398 quality should be considered deprecated.
4399 * install.sh now installs the user manual as well
4400 * (not quite a new documentable feature, but worth considering in
4401 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4402 beginnings of a semantically meaningful condition hierarchy is
4403 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4405 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4406 designator as the defaults argument.
4407 * fixed bug: Displaced arrays whose displaced-to array has become
4408 too small now cause ARRAY-DIMENSION to signal an error, providing
4409 for safer bounds-checking. (reported by Bruno Haible)
4410 * fixed bug: DEFCLASS slot definitions with identical :READER and
4411 :WRITER names now signal a reasonable error. (reported by Thomas
4413 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4415 * fixed bug: Invalid slot specification errors now print correctly.
4416 (thanks to Zach Beane)
4417 * fixed bug 320: Shared to local slot value transfers in class
4418 redefinitions now happen corrently from superclasses as
4419 well. (reported by Bruno Haible)
4420 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4422 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4423 improper lists correctly. (reported by Bruno Haible)
4424 * fixed bug 313: source-transform for <fun-name> was erroneously
4425 applied to a call of a value of a variable with name <fun-name>.
4426 (reported by Antonio Menezes Leitao)
4427 * fixed bug 307: The obsolete instance protocol ensures that
4428 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4429 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4430 remove dead unknown-values globs from the middle of the stack.
4431 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4432 easier to resume long computations after using *BREAK-ON-SIGNALS*
4433 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4434 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4435 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4436 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4437 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4438 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4440 * fixed a (fairly theoretical) bug in string printing: if
4441 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4442 does not have array-element-type equal to the most general string
4444 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4445 function name. (thanks to Nikodemus Siivola)
4446 * fixed bug: compile-time format string checker failed on
4447 non-closed ~{. (reported by Thomas F Burdick)
4448 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4449 don't warn on legal loop code involving more than one aggregate
4450 boolean. (thanks to Nikodemus Siivola)
4451 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4452 in keyword position to MAKE-PACKAGE was not being reported as
4454 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4455 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4457 * fixed bugs 280 and 312: the checking for multiple definitions in a
4458 file is less likely to become confused by uses of inline
4460 * fixed bug: the #S reader macro performs the keyword coercion
4461 specified for slot names. (reported by Kalle Niemitalo)
4462 * fixed bug: lambda lists may contain symbols whose names start with
4463 & but are not lambda-list-keywords; their occurrence triggers a
4465 * fixed bug 321: define-method-combination argument lambda lists do
4466 not cause invalid code to be generated when &optional or &aux
4467 variables have default values. (reported by Bruno Haible)
4468 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4469 have CLOS classes; this appears also to have fixed reported
4470 instability in stack exhaustion detection.
4471 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4472 MUFFLE-WARNING when no associated restart is present is now
4474 * optimization: rearranged the expansion of various defining macros
4475 so that each expands into only one top-level form in a
4476 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4478 * optimization: used a previously little-used slot in symbols to
4479 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4481 * fixed some bugs revealed by Paul Dietz' test suite:
4482 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4484 ** Fixed an optimization bug related to inheritance of initforms
4485 from local to shared slots.
4486 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4487 ** CAST optimizer forgot to flush argument derived type.
4488 ** print/read consistency on floats is now orders of magnitude
4489 more likely. (thanks also to Bruno Haible for a similar report
4491 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4492 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4493 for objects of type REAL. Make it so.
4494 ** SXHASH is specified (infelicitously) to respect similarity,
4495 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4496 it so. (thanks to Markus Ziegler)
4497 ** on the Alpha, the compiler succeeds in compiling functions
4498 returning a known number of arguments greater than 63.
4499 ** fixed handling of invalid NIL arguments in keyword position
4501 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4503 ** provided a readably-printable representation for RANDOM-STATE
4505 ** ensured that pathnames, where they have a namestring, always
4506 print using #P"..." syntax.
4508 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4509 * Support for the forthcoming 2.0 version of the NetBSD kernel
4510 running on x86 hardware has been added. (thanks to Perry
4511 E. Metzger most immediately, and others for their past work)
4512 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4513 current release version; SBCL's OpenBSD support had been broken
4514 since about the time of OpenBSD's switch to ELF binary format.)
4515 * [placeholder for DX summary]
4516 ** user code with &REST lists declared dynamic-extent, under high
4517 speed or space and low safety and debug optimization policy.
4518 * The manual has been converted to Texinfo format and the debugger
4519 chapter from the cmucl manual has been added.
4520 * A facility has been added to extract documentation strings from
4521 sbcl and store them as Texinfo-formatted snippets for inclusion in
4522 the manual (via Texinfo's @include directive)
4523 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4524 the test case to Dave Roberts)
4525 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4526 pointers. (reported by Sean Ross)
4527 * bug fix: PROFILE output is printed nicely even for large numerical
4528 values. (thanks to Zach Beane)
4529 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4530 greater than 32 handle EOF correctly.
4531 * bug fix: on X86 an immediate argument of the IMUL instruction is
4532 correctly printed in disassembly. (thanks to Lutz Euler)
4533 * bug fix: class slots in redefined classes preserve their old
4534 values. (thanks to Bruno Haible and Nikodemus Siivola)
4535 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4536 succeeds. (reported by Marco Baringer)
4537 * fixed some bugs revealed by Paul Dietz' test suite:
4538 ** READ-SEQUENCE now works on ECHO-STREAMs.
4539 ** RATIONALIZE works more according to its specification. (thanks
4542 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4543 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4544 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4545 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4546 should matter to you only if you rebind the printer control
4547 variables and then find you want different bindings in the
4548 debugger than in the ordinary execution of your program.)
4549 * The runtime build system has been tweaked to support building
4550 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4551 assembler and linker. (thanks to Nikodemus Siivola)
4552 * Unbound, undefined, undeclared variables now trigger full
4553 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4554 more often programmer error than deliberate exploitation of undefined
4556 * optimization: the hash algorithm for strings has changed to one
4557 that is less vulnerable to spurious collisions. (thanks to Juho
4559 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4560 needless bounds checking. (thanks to Juho Snellman)
4561 * optimization: implemented multiplication as a modular
4562 (UNSIGNED-BYTE 32) operation on the PPC backend.
4563 * fixed some bugs revealed by Paul Dietz' test suite:
4564 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4566 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4567 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4568 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4570 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4572 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4574 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4575 their output stream on EOF from read.
4576 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4577 have been read to end-of-file.
4578 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4580 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4581 description of determination of which consecutive characters
4583 ** Printing the "Space" character with escaping on now yields "#\\ ",
4584 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4585 ** Reading floating-point numbers with *READ-BASE* set to a number
4586 less than 10 works correctly.
4587 ** Reading floating-point numbers with *READ-BASE* set to a number
4588 more than 10 works correctly.
4589 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4590 the readtable currently in effect.
4592 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4593 * minor incompatible change: parsing of namestrings on a physical
4594 (Unix) host has changed; numbers after the final #\. in a
4595 namestring are no longer interpreted as a version field. This is
4596 intented to be largely invisible to the user, except that the
4597 meaning of the namestring "*.*.*" has changed: it now refers to a
4598 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4599 should usually be replaced by
4600 (make-pathname :name :wild :type :wild :version :wild)
4601 with the added benefit that this is more likely to be portable.
4602 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4603 option to OPEN now signals an error if the file being opened
4604 exists; this may have an impact on existing code.
4605 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4606 signals received, on the PowerPC platforms (both Linux and
4607 Darwin). (thanks to Pierre Mai for pointing out the location of
4609 * several fixes on OS X: The system now builds and runs cleanly on
4610 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4611 (thanks to Brian Mastenbrook)
4612 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4613 second-resolution: integer multiples of 1/3600 between -24 and 24.
4614 (thanks to Vincent Arkesteijn)
4615 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4616 type when called with 1 argument; PEEK-CHAR checked type of
4617 PEEK-TYPE only after having read first character from a
4618 stream. (reported by Peter Graves)
4619 * bug fix: the garbage collector now has much better locality
4620 behaviour, and in particular no longer treats all memory as being
4621 exhausted when many small objects point to each other in a deeply
4623 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4624 recognized as being TYPEP their class.
4625 * bug fix: the PUSHNEW documentation string has been corrected.
4626 (thanks to Vincent Arkesteijn)
4627 * bug fix: defaulting of the value for the last of an atypically
4628 large number of multiple values being bound was not being
4629 performed correctly on the Alpha or PPC platforms
4630 * optimization: implemented multiplication as a modular
4631 (UNSIGNED-BYTE 32) operation on the x86 backend.
4632 * optimization: SEARCH on simple-base-strings can now be open-coded.
4633 (see also contrib/compiler-extras.lisp for inspiration for
4634 teaching the compiler about the Boyer-Moore algorithm).
4635 * value, returned by MAX (and MIN) called with several EQUALP, but
4636 not EQL, arguments now does not depend on compiler settings.
4637 * fixed some bugs revealed by Paul Dietz' test suite:
4638 ** in stack analysis liveness information is propagated from
4639 non-local entry points.
4640 ** pathwise CAST removing failed when the CAST node did not start
4642 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4643 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4645 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4646 host is already defined.
4647 ** RENAME-FILE works on streams instead of signalling an internal
4649 ** PEEK-CHAR uses the current readtable when determining whether
4650 or not a character is whitespace.
4651 ** MERGE-PATHNAMES handles the case when the pathname does not
4652 specify a name while the default-pathname specifies a version.
4653 ** Pathnames now stand a better chance of respecting print/read
4655 ** Attempting to use standardized file system operators with a
4656 pathname with invalid :DIRECTORY components signals a
4658 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4660 ** DIRECTORY on logical pathnames is more correct.
4661 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4662 signal a TYPE-ERROR if their argument is not a stream.
4663 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4664 designator argument does not designate a stream.
4665 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4666 examining the synonym.
4667 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4669 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4670 element-type larger than ([UN]SIGNED-BYTE 32).
4672 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4673 * When built with the :SB-FUTEX feature, threaded builds now take
4674 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4675 for faster/more reliable mutex and condition variable support.
4676 * Incompatible change (but one you probably shouldn't have been using
4677 anyway): the interface and code for arbitrating between multiple
4678 threads in the same user session has been redesigned.
4679 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4680 error when called without an explicit environment argument.
4681 (thanks to Nikodemus Siivola)
4682 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4683 confused about their position. (thanks to Adam Warner and Gerd
4685 * bug fix: Pretty printing backquoted forms with unquotations in the
4686 argument list position of various code constructs such as LAMBDA
4687 now works correctly. (reported by Paul Dietz)
4688 * bug fix: Pretty printing unquotations no longer loses all
4689 stream position information.
4690 * optimization: performance of string output streams is now less
4691 poor for multiple small sequence writes.
4692 * optimization: performance of CSUBTYPEP in the presence of complex
4693 expressions involving CONS and NOT many times has been improved.
4694 (reported by Paul Dietz)
4695 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4697 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4698 streams for the REPL, for the debugger, and so on. (thanks to
4700 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4701 * fixed some bugs revealed by Paul Dietz' test suite:
4702 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4703 is ignored if it is too small, rather than propagating through
4704 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4705 ** extremely complex negations of CONS types were not being
4706 sufficiently canonicalized, leading to inconsistencies in
4708 ** VALUES tranformer lost derived type.
4710 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4711 * fixed a bootstrapping bug: the build process no longer assumes
4712 that the various BOOLE-related constants have the same value in
4713 host and target lisps. (noted by Paul Dietz' test suite on an
4714 SBCL binary built from CLISP)
4715 * The system can now be dynamically linked on the MIPS platform,
4716 which enables dynamic loading of foreign code from Lisp. (thanks
4717 to Ralf Baechle for discussions on the MIPS ABI)
4718 * The system now records debugging information for its own source
4719 files in a filesystem-position-independent manner, relative to
4720 the "SYS" logical host.
4721 * fixed a compiler bug: MV-LET convertion did not check references
4722 to the "max args" entry point. (reported by Brian Downing)
4723 * tweaked disassembly notes to be less confident about proclaiming
4724 some instruction as an LRA. (thanks to Brian Downing)
4725 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4726 now each have their own history, command character, and other
4727 characteristics. (thanks to David Lichteblau)
4728 * fixed some bugs revealed by Paul Dietz' test suite:
4729 ** compiler failure in compiling LOGAND expressions including a
4731 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4732 shift greater than 32.
4733 ** FLUSH-DEST did not mark blocks for type check regeneration.
4734 ** HANDLER-CASE failed to accept declarations in handler clauses
4735 in some circumstances.
4737 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4738 * New code in contrib/sb-introspect (still probably not entirely
4739 stable yet) provides some support for smart Lisp development
4740 environments like SLIME.
4741 * The conditions signalled for errors occurring when loading .fasl
4742 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4743 in a way which should help ASDF recover gracefully.
4744 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4745 stuff has been cleaned up. If you code contrib/ stuff, this might
4746 affect you, and you can look at contrib/README, contrib/STANDARDS,
4747 and/or the 0.8.4.27 diff to check.
4748 * In full calls the compiler now does not generate checks for declared
4749 argument types for all arguments.
4750 * various threading fixes
4751 ** and some experimental patches which didn't make it into
4752 the main tree for this release, but which are shipped in
4753 contrib/experimental-thread.patch as a possible fix for some
4754 failures (deadlock, spinning...) in GC-intensive multithreaded
4756 * fixed PPC build problem (source code incompatibility of different
4757 library versions): added offsetof() hackery which attempts to divine
4758 where glibc maintainers put uc_mcontext today
4759 * fixed bug 282: compiler does not trust type assertions while passing
4760 arguments to a full call.
4761 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4762 &OPTIONAL VALUES type parameter.
4763 * fix bug 214: algorithm for noting rejected templates is now more
4764 similar to that of template seletion. (also reported by rydis on
4766 * fixed bug 141b: printing backquoted information readably and prettily
4767 inserts a space where necessary.
4768 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4769 (CHARACTER 10) are now reported as errors, rather than propagated
4770 as unknown types. (reported by piso on #lisp)
4771 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4772 with values NIL and :ERROR. (thanks to Milan Zamazal)
4773 * fixed bug 191c: CLOS now does proper keyword argument checking as
4774 described in CLHS 7.6.5 and 7.6.5.1.
4775 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4776 longer raise an error; further, using a list as a for-as-arithmetic
4777 counter now raises a meaningful error.
4778 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4779 now understood by sequence creation functions such as MAKE-SEQUENCE
4781 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4782 a STRING-INPUT-STREAM.
4783 * compiler enhancement: SIGNUM is now better able to derive the type
4785 * type declarations inside WITH-SLOTS are checked. (reported by
4787 * fixed some bugs revealed by Paul Dietz' test suite:
4788 ** incorrect optimization of TRUNCATE for a positive first
4789 argument and negative second.
4790 ** compiler failure in let-convertion during flushing dead code.
4791 ** compiler failure while deriving type of TRUNCATE on an
4792 interval, containing 0.
4793 ** ASH of a negative bignum by a negative bignum count now returns
4795 ** intersection of CONS types now canonicalizes properly, fixing
4796 inconsistencies in SUBTYPEP.
4798 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4799 * incompatible change: The --disable-debugger command line
4800 option now clobbers the debugger at a more fundamental
4801 level, by redefining #'INVOKE-DEBUGGER instead of by
4802 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4803 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4804 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4805 enter the debugger REPL and then suffer recursive errors
4806 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4807 while under the new system, BREAK in --disable-debugger mode
4808 terminates the system just as an unhandled error would.
4809 * fixed compiler performance when processing loops with a step >1;
4810 * bug fix: DOCUMENTATION now retrieves generic function
4811 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4812 support has been systematized, and now supports the methods
4813 specified by ANSI, along with a default method and a method for
4814 slot documentation. (reported by Nathan Froyd)
4815 * bug fix: effective methods associated with a generic function are
4816 no longer cached over a change of that generic function's method
4817 combination. (reported by Andreas Fuchs)
4818 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4819 names a non-existent directory. (thanks to Andreas Fuchs)
4820 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4821 the PPC platform, lead to stack corruption; this has been fixed.
4822 (reported by Rainer Joswig)
4823 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4824 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4825 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4826 arithmetic in general, is now much more reliable on the PPC
4828 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4829 platform now returns the right answer.
4830 * optimization: restored some effective method precomputation in
4831 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4832 precomputation is now tunable.
4833 * optimization: compiler-internal data structure use has been
4834 reviewed, and changes have been made that should improve the
4835 performance of the compiler by about 20%.
4836 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4837 simple-base-strings and simple-bit-vectors is improved.
4838 * optimization: the optimization of 32-bit logical and arithmetic
4839 functions introduced in version 0.8.3 on the x86 has been
4840 implemented on the mips, ppc and sparc platforms; an
4841 implementation of the same facility, but for 64-bit arithmetic,
4842 has been added for the alpha.
4843 * microoptimization: the compiler is better able to make use of the
4844 x86 LEA instruction for multiplication by constants.
4845 * bug fix: in some situations compiler did not report usage of
4846 generic arithmetic in (SPEED 3) policy.
4847 * bug 145b fix: compiler used wrong type specifier while converting
4848 MEMBER-types to numeric.
4849 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4851 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4852 index argument now works properly on the Alpha platform.
4853 * bug fix: floating point exception treatment on the Alpha platform
4855 * bug fix: FILE-POSITION works much better on string input and
4856 output streams. (thanks to Nikodemus Siivola)
4857 * bug fix: many threading/garbage collection symptoms sorted.
4858 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4859 might be pseudo-atomic.
4860 * internal change: Stopping for GC is now done with signals not
4861 ptrace. GC is now done in whichever thread wanted it, instead of
4863 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4865 * bug fix: result form in DO is not contained in the implicit
4867 * incompatible change: ICR structure is changed; the value part of
4868 CONTINUATION is now called LVAR; corresponding functions are
4869 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4870 * added type deriver for ISQRT (thanks to Robert E. Brown).
4871 * bug fix: better support for loading from the command line when an
4872 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4874 * fixed some bugs revealed by Paul Dietz' test suite:
4875 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4876 ** ROUND and FROUND now give the right answer when given very
4877 small float arguments.
4878 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4880 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4881 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4882 ** LCM should return a non-negative integer.
4883 ** PARSE-INTEGER returned the index of a terminator instead of the
4884 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4885 ** PARSE-INTEGER returned an incorrect index being applied to a
4887 ** LCM with two arguments of 0 returns 0 rather than signalling
4889 ** unsigned addition of a 32-bit constant with the high bit set no
4890 longer causes an internal compiler error on the x86.
4891 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4892 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4893 with negative last argument.
4894 ** byte specifiers with zero size and position no longer cause
4895 an error during type derivation.
4896 ** bignum multiplication on the Alpha platform now returns the
4898 * porting: The system now builds on SuSE AMD64, although it still
4899 generates a 32-bit binary.
4900 * .fasl file incompatibility: The fasl file version number has
4901 been incremented (because of the changes to internal compiler
4902 data structures referred to above).
4904 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4905 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4906 more accurately, on the Darwin kernel running on PowerPC hardware.
4907 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4908 * Compiler code deletion notes now signal a condition of type
4909 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4910 an associated MUFFLE-WARNING restart.
4911 * The compiler now performs limited argument count validation of
4912 constant format strings in FORMAT, and where appropriate in ERROR,
4913 CERROR and WARN. (thanks to Gerd Moellmann)
4914 * New ASDF-INSTALL contrib can be used for automatic download and
4915 installation of third-party Lisp code from CCLAN or other sites
4917 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4918 which forces another thread to execute a function supplied by the
4920 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4921 now accept and act upon their :ELEMENT-TYPE keyword argument.
4922 (reported by Martin Atzmueller, Edi Weitz)
4923 * bug fix: FILE-POSITION now accepts position designators up to
4924 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4925 is the greater. (thanks to Patrik Nordebo)
4926 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4927 Kalle Olavi Niemitalo)
4928 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4929 printable. (reported by Eric Marsden)
4930 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4931 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4932 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4933 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4934 (thanks to Stig Sandoe)
4935 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4936 UNREAD-CHAR now correctly includes the unread character in the
4937 target sequence. (thanks to Gerd Moellmann)
4938 * bug fix in threaded builds: the system can now be suspended and
4939 resumed by shell job control with minimal disruption.
4940 * bug fixes in times and timezones >2038AD
4941 * better handling of "where is GNU make?" problem in build scripts
4942 (thanks to Nikodemus Siivola)
4943 * new optimization: inside a named function any reference to a
4944 function with the same name is considered to be a self-reference;
4945 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4946 optimization quality.
4947 * new optimization on x86: logical functions and + now have
4948 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4949 used when the result is truncated to 32 bits.
4950 * VALUES declaration is partially enabled.
4951 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4952 * fixed some bugs revealed by Paul Dietz' test suite:
4953 ** The system now obeys the constraint imposed by
4954 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4955 types form a lattice under type intersection.
4956 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4957 ** ASSOC now ignores NIL elements in an alist.
4958 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4959 and (1+ MOST-POSITIVE-FIXNUM) answers.
4960 ** The addition of a method with invalid qualifiers to a generic
4961 function does not cause an error to be signalled immediately;
4962 a warning is signalled, and the error is generated only on
4963 calling the generic function.
4964 * changed .fasl file version number, in part to add type codes for
4965 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4966 obscure ANSI requirements
4968 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4969 * fixed bug 148: failure to inline-expand a local function left
4970 garbage, confusing the compiler.
4971 * fixed bugs 3cd: structure slot readers perform type check if the
4972 slot can have an invalid value (i.e. it is either not initialized
4973 or can be written with a less specific slot writer).
4974 * bug fix: the compiler now traps array references to elements off
4975 the end of an array; previously, the bounds checking in some
4976 circumstances could go off-by-one.
4977 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4979 * type declarations for array element types now obey the description
4980 on the CLHS page "Declaration TYPE", as per discussions on
4981 sbcl-help around 2003-05-08. This means that a declaration
4982 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4983 declaration, all references to BAR will be asserted or assumed
4984 (with THE, so dependent on compiler policy) to involve objects of
4985 type FOO. Note that no such declaration is implied in
4986 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4987 * declared types of functions from the "Conditions"
4988 chapter. (reported by Paul Dietz)
4989 * bug fix: CERROR accepts a function as its first argument.
4990 * bug fix: NTH an NTHCDR accept a bignum as index
4991 arguments. (reported by Adam Warner)
4992 * optimization: character compare routines now optimize comparing
4993 against a constant character. (reported by Gilbert Baumann)
4994 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4995 argument now works properly on the MIPS platform.
4996 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4997 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4998 declared to have a functional type, does not cause an error
5000 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
5001 many :DEFAULT-INITARGS. (reported by Istvan Marko)
5002 * fixed bug: if last continuation of a deleted block has a
5003 destination, this destination should be deleted too. (reported by
5005 * fixed a bug in the bootstrap process: the host compiler's values
5006 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
5007 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
5008 test case from Patrik Nordebo)
5009 * improved the ability of the disassembler on the PPC platform to
5010 provide helpful disassembly notes.
5011 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
5012 the class in more cases than previously.
5013 * bug fix: FILE-POSITION now understands :START and :END for
5014 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
5015 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
5016 8) data. (thanks to David Lichteblau)
5017 * bug fix: it is possible to add a method to a generic function
5018 without lambda list.
5019 * bug fix: reader failed to signal END-OF-FILE inside an
5020 object representation. (reported by Nikodemus Siivola)
5021 * fixed some bugs revealed by Paul Dietz' test suite:
5022 ** LAST and [N]BUTLAST should accept a bignum.
5023 ** condition slot accessors are methods.
5024 ** (VECTOR NIL) is a subtype of STRING.
5026 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
5027 * minor incompatible change: some nonsensical specialized lambda
5028 lists (used in DEFMETHOD) which were previously ignored now signal
5030 * minor incompatible change: the system is now aware of the types of
5031 variables in the COMMON-LISP package, and will signal errors for
5032 most violations of these type constraints (where previously they
5033 were silently accepted).
5034 * minor incompatible change: COMPILE-FILE now uses the freedom
5035 afforded (ANSI 3.2.2.3) to use derived function types for
5036 functions defined in the same file. This also permits the system
5037 to warn on static type mismatches and function
5038 redefinition. (Currently it does not work with high DEBUG level.)
5039 * minor incompatible change: VALUES declaration is disabled.
5040 * When issuing notes, the compiler now signals a condition of type
5041 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
5042 restart for use in user handlers. It is expected that the
5043 COMPILER-NOTE condition will eventually become a condition
5044 supertype to a hierarchy of note types, which will then be
5045 handleable in a similar fashion. However, at the moment, no such
5046 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
5047 but it's an implementation detail, not a classification for the
5049 * Changes in type checking closed the following bugs:
5050 ** type checking of unused values (192b, 194d, 203);
5051 ** template selection based on unsafe type assertions (192c, 236);
5052 ** type checking in branches (194bc).
5053 * A short form of VALUES type specifier has ANSI meaning (it has
5054 increased the number of situations when SBCL cannot perform type
5056 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5057 keywords or constants is permissible.
5058 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5059 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5060 classes. (thanks to Antonio Martinez)
5061 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5062 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5063 argument to a pretty-print stream. Instead, it leaves any such
5064 operations to DESCRIBE-OBJECT methods.
5065 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5067 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5068 lambda lists. (thanks to David Lichteblau)
5069 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5070 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5071 (thanks to Gerd Moellmann)
5072 * fixed bug 246: increased compilation speed of long
5073 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5075 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5077 * DEFCONSTANT now throws a condition of type
5078 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5079 constant to a non-EQL value; CONTINUE and ABORT restarts
5080 respectively change and preserve the value.
5081 * fixed bug 63: The code walker, part of the implementation of CLOS,
5082 is now better at handling symbol macros.
5083 * bug fix: There is no longer an internal implementation type named
5084 CL:LENGTH. (reported by Raymond Toy)
5085 * bug fix: In macro-like defining macros/special operators the
5086 implicit block does not enclose the lambda list.
5087 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5088 enclosed in parentheses) are not suitable as type specifiers, and
5089 their use properly signals an error now.
5090 * bug fix: An argument count mismatch for a type specifier in code
5091 being compiled no longer causes an unhandled error at compile
5092 time, but signals a compile-time warning.
5093 * fixed simple vector readable printing
5094 * bug fix: DESCRIBE takes more care over whether the class
5095 precedence list slot of a class is bound before accessing it.
5096 (reported by Markus Krummenacker)
5097 * bug fix: FORMATTER can successfully compile pretty-printer format
5098 strings which use variants of the ~* directive inside.
5099 * bug fix: SEARCH now applies its TEST predicate to the elements of
5100 the arguments in the correct order. (thanks to Wolfhard Buss)
5101 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5102 in type inference. (thanks to Robert E. Brown)
5103 * bug fix: Reading in symbols with an explicit package name of ""
5104 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5105 * fixed some bugs revealed by Paul Dietz' test suite:
5106 ** NIL is now allowed as a structure slot name.
5107 ** Arbitrary numbers, not just REALs, are allowed in certain
5108 circumstances in LOOP for-as-arithmetic clauses.
5109 ** Multiple class redefinitions before slot access no longer
5110 causes a type error.
5111 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5112 association between the name and a class.
5113 ** Generic functions with non-standard method-combination and over
5114 five methods all of which return constants no longer return NIL
5115 after the first few invocations. (thanks to Gerd Moellmann)
5116 ** CALL-NEXT-METHOD with no arguments now passes the original
5117 values of the arguments, even in the presence of assignment.
5118 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5120 ** DISASSEMBLE works with closures and funcallable instances.
5121 ** ADD-METHOD now returns the generic function, not the new method.
5122 ** FIND-METHOD signals an error if the lengths of the specializers
5123 is incompatible with the generic function, even if the ERRORP
5125 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5126 which its argument is a member.
5127 ** DEFCLASS only redefines the class named by its class-name
5128 argument if that name is the proper name of the class;
5129 otherwise, it creates a new class.
5130 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5131 of the UNBOUND-SLOT condition to the name of the slot.
5132 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5133 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5134 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5135 SLOT-MAKUNBOUND in the specified fashion.
5137 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5138 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5139 cross-compilation host. As a consequence, we can now bootstrap our
5140 way up to SBCL starting with a bare gcc toolchain and human-readable
5141 source code (first the source to CLISP, then the source to SBCL).
5142 * A contributed module containing a partial implementation of the
5143 simple-streams interface has been included. (thanks to Rudi
5145 * A contributed module implementing the RFC1321 Message Digest
5146 Algorithm, known as MD5, has been included.
5147 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5148 no longer has any effect, as the code controlled by this feature
5149 has been deleted. (As far as we know, no-one has ever built using
5150 this feature, and its semantics were confused in any case).
5151 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5152 work on conditions (as required by the ANSI specification),
5153 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5154 expected behaviour on conditions. Users should note, however,
5155 that such behaviour is not required by the ANSI specification,
5156 and so use of this behaviour may render their code unportable.
5157 * fixed some bugs revealed by Paul Dietz' test suite:
5158 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5160 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5161 ** SXHASH on condition objects no longer returns NIL.
5162 ** :ALLOCATION :CLASS slots are better treated; their values are
5163 updated on class redefinition, and initforms inherited from
5164 superclasses are applied.
5165 ** REMOVE-METHOD returns its generic function argument even when
5166 no method was removed.
5167 ** SHARED-INITIALIZE now initializes the values of the requested
5168 slots, including those with :ALLOCATION :CLASS.
5169 ** ALLOCATE-INSTANCE now works on structure classes defined via
5170 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5172 ** SLOT-EXISTS-P now works on conditions, as well as structures
5174 ** MAKE-LOAD-FORM now has the required methods on
5175 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5176 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5177 keyword, and now implements the SLOT-NAMES argument.
5178 ** methods with &OPTIONAL arguments no longer allow too many
5179 arguments to be passed in the call without error.
5180 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5181 option is consistent with the required arguments of the generic
5182 function lambda list.
5183 * bug fix: REQUIRE accepts a string designator. (Thanks to
5185 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5186 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5187 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5188 * bug fix: The compiler now checks for duplicated variables in macro
5190 * bug fix: SETQ on globals returns the correct value.
5191 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5192 not a COMPILER-ERROR (followed by some other strange error on
5193 choosing the CONTINUE restart).
5194 * bug fix: make.sh and friends are now more consistent in the way that
5195 they look for GNU "make".
5197 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5198 * experimental native threads support (on x86 Linux >=2.4 only).
5199 This is not compiled in by default: you need to add :SB-THREAD to
5200 the target features. See the "Beyond ANSI" chapter of the manual
5202 * fix for longstanding nonANSIism: The old distinction between
5203 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5204 The return value from CL:FIND-CLASS is now a CLOS class, and
5205 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5206 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5207 * An interface to the MetaObject Protocol, as described in Kiczales,
5208 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5209 MIT Press, 1991, is available from the SB-MOP package.
5210 * incompatible change: the SB-PCL package should now be considered
5211 a private implementation detail, and no longer a semi-private MOP
5213 * minor incompatible change: due to rearrangement for threads, the
5214 control stack and binding stack are now allocated at arbitrary
5215 addresses instead of being hardcoded per-port. Users affected by
5216 this probably have to be doing advanced things with shared
5217 libraries, and will know who they are.
5218 * minor incompatible change: Previously, all --eval forms used were
5219 processed with READ before any of them were processed with EVAL.
5220 Now each --eval form is processed with both READ and EVAL before
5221 the next --eval form is processed. (Thus package operations like
5222 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5223 work as the user might reasonably expect.)
5224 * minor incompatible change: *STANDARD-INPUT* is now only an
5225 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5227 * minor incompatible change: Y-OR-N-P is now character-oriented,
5228 not line oriented. Also, YES-OR-NO-P now works without errors.
5229 (thanks to Antonio Martinez)
5230 * sb-aclrepl module improvements: an integrated inspector, added
5231 repl features, and a bug fix to :trace command.
5232 * Known functions, which cannot be open coded by the backend, are
5233 considered to be able to check types of their arguments. (fixing
5234 a bug report by Nathan J. Froyd)
5235 * fixed a bug in computing method discriminating functions: It is
5236 now possible to define methods specialized on classes which have
5237 forward-referenced superclasses. (thanks to Gerd Moellmann)
5238 * fixed evaluation order in optional entries (reported by Gilbert
5240 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5241 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5242 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5243 required-by-AMOP NAME argument, as well as CLASS and
5244 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5245 * fixed bug 20: DEFMETHOD can define methods using names that are
5246 not the proper names of classes to designate class specializers.
5247 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5248 Unix file descriptors, instead of blowing up. (thanks to Antonio
5250 * Garbage collection refactoring: user-visible change is that a
5251 call to the GC function during WITHOUT-GCING will not do garbage
5252 collection until the end of the WITHOUT-GCING. If you were doing
5253 this you were probably losing anyway.
5254 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5255 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5256 TYPEP the latter but not the former.
5257 * The compiler issues a full WARNING for calls to undefined functions
5258 with names from the CL package.
5259 * MAP-INTO for a vector destination is open coded. (reported by
5260 Brian Downing on c.l.l)
5261 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5262 documentation string.
5263 * fixed some bugs revealed by Paul Dietz' test suite:
5264 ** COPY-ALIST now signals an error if its argument is a dotted
5266 ** Condition slots are now accessed more correctly in the presence
5267 of multiple initargs for a given slot.
5268 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5269 exclude restarts of the same name associated with a different
5271 ** DEFCLASS of forward-referenced classes with another
5272 forward-referenced class in the superclasses list no longer
5274 ** Condition slots are now initialized once each, not multiple
5275 times. (thanks to Gerd Moellmann)
5276 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5278 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5279 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5280 arguments contain duplicated elements.
5281 ** RESTART-CASE understands local macros.
5282 ** RESTART-CASE associates exactly its own restarts with a condition.
5283 ** ENDP in safe mode checks its argument to be of type LIST.
5284 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5285 in question is unbound.
5286 ** Optimized MAKE-INSTANCE functions no longer cause internal
5287 assertion failures in the presence of duplicate initargs.
5288 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5289 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5290 propagated even in the ctor optimized implementation of
5292 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5294 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5295 * a better implementation of SXHASH on (simple) bit vectors,
5296 measured both in execution speed and in distribution of results
5297 over the positive fixnums, has been installed. Likewise, a better
5298 implementation of EQUAL for simple bit vectors is now available.
5299 * fixed CEILING optimization for a divisor of form 2^k.
5300 * fixed bug 240 (emitting extra style warnings "using the lexical
5301 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5302 by Antonio Martinez)
5303 * fixed SXHASH, giving different results for NIL depending on type
5304 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
5305 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
5306 variable. (found by Rolf Wester)
5307 * SBCL does not ignore type declarations for special
5308 variables. (reported by rif on c.l.l 2003-03-05)
5309 * some bug fixes in contrib/sb-aclrepl/
5310 * fixed some bugs revealed by Paul Dietz' test suite:
5311 ** a bug in the CONS type specifier, whereby the CAR and CDR
5312 types got intertwined, has been fixed;
5313 ** the type system is now able to reason about the interaction
5314 between INTEGER and RATIO types more completely;
5315 ** APPEND, [N]REVERSE and NRECONC check that those their
5316 arguments, which must be proper lists, are really so;
5317 ** An array specialized to be unable to hold elements has been
5318 implemented, as required -- yes, really -- by ANSI;
5319 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5320 on malformed property lists;
5322 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5323 * incompatible packaging change: in line with Unix convention,
5324 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5325 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5326 * REQUIRE and PROVIDE are now optionally capable of doing something
5327 useful. See the documentation string for REQUIRE.
5328 * infrastructure for a managed SBCL contrib system: contributed
5329 modules in this release include:
5330 ** the ASDF system definition facility;
5331 ** an interface to the BSD Sockets API;
5332 ** an ACL-like convenience interface to the repl;
5333 (thanks to Kevin Rosenberg)
5334 ** an implementation of ROTATE-BYTE, with efficient implementation
5336 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5337 gives a closer approximation to the right answer than previously.
5338 (thanks to Raymond Toy)
5339 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5340 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5341 optional environment arguments, as required by ANSI.
5342 * fixed bugs in other functions taking environment objects, allowing
5343 calls with an explicit NIL environment argument to be compiled
5345 * fixed bug 228: primary return values from
5346 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5347 COMPILE or FUNCTION.
5348 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5349 :TYPE will no longer signal errors on innocuous objects.
5350 * fixed bug 231b: SETQ is better at respecting type declarations in
5351 the lexical environment.
5352 * fixed a bug in DEFCLASS: classes named by symbols with no or
5353 unprintable packages can now be defined.
5354 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5355 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5356 * fixed compiler failure related to checking types of functions.
5357 (reported by Robert E. Brown)
5358 * the compiler is now much more consistent in its error-checking
5359 treatment of bounding index arguments to sequence functions: in
5360 (SAFETY 3) code, errors will be signalled in almost all cases if
5361 invalid sequence bounding indices are passed to functions defined
5362 by ANSI to operate on sequences.
5363 * fixed a bug in the build procedure: documentation of SBCL-specific
5364 packages is now preserved and available in the final Lisp image.
5365 * lifted FDEFINITION lookup out of loops in the implementation of
5366 many list operations. (thanks to Robert E. Brown)
5367 * fixed a bug in the reader: the #n# reader macro now works for
5368 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5369 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5370 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5371 E. Brown and Tony Martinez respectively)
5372 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5373 SLOT-BOUNDP: in particular, it is now able to optimize them much
5374 better, and is now not vulnerable to having packages renamed.
5375 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5376 always called when a slot is not present in an instance. (thanks
5378 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5379 longer signal an error on unreading a character following EOF on
5380 the previous constituent stream. (thanks to Tony Martinez)
5381 * fixed some bugs revealed by Paul Dietz' test suite:
5382 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5383 not just nonnegative fixnums;
5384 ** the logical bit-array operators such as BIT-AND now accept an
5385 explicit NIL for their "opt-arg" argument (to indicate a
5386 freshly-consed result bit-array);
5387 ** ELT now signals an error on an invalid sequence index in safe
5389 ** the type system is now cleverer about negations of numeric
5390 types, and consequently understands the BIGNUM and RATIO types
5392 ** the type system is now cleverer about the interaction between
5393 INTEGER and RATIO types: while bugs still remain, many more
5394 cases are accurately computed;
5395 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5396 if it is in the last clause;
5397 ** CONSTANTLY now correctly returns a side-effect-free function in
5399 ** DECLARE is no longer treated as a special-operator; in
5400 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5401 * incremented fasl file version number due to the change in the
5402 DEFSTRUCT-SLOT-DESCRIPTION structure.
5404 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5405 * minor incompatible change: code processed by the "interpreter" or
5406 EVAL now has a compilation optimization policy of (DEBUG 2)
5407 (changed from (DEBUG 1)) to improve debuggability of interactive
5408 development, and to allow the use of the debug RETURN command in
5410 * an experimental implementation of the RETURN command for the
5411 debugger has been included. (thanks to Frederik Kuivinen)
5412 * fixed bug 62: constraints were not propagated into a loop.
5413 * fixed bug in embedded calls of SORT (reported and investigated by
5415 * fixed some bugs revealed by Paul Dietz' test suite:
5416 ** printing and reading of arrays with some dimensions having
5417 length 0 (thanks to Gerd Moellmann);
5418 ** BOA constructor with &AUX argument without a default value does
5419 not cause a type error;
5420 ** CONSTANTP now returns true for all self-evaluating objects.
5422 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5423 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5424 accessors that are related by inheritance, as specified in the
5425 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5426 Valtteri Vuorikoski)
5427 * The compiler is now able to inline functions that were defined in
5428 a complex lexical environment (e.g. inside a MACROLET).
5429 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5431 * Support for the upcoming FreeBSD-5.0 release has been included.
5432 (thanks to Dag-Erling Smorgrav)
5433 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5434 effect when it is not in a toplevel context.
5435 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5436 stand a better chance of being correct. (thanks to Gerd
5438 * fixed bug in COERCE, which now signals an error on coercing a
5439 rational to a bounded real type which excludes the expected
5441 * The compiler is now able to derive types more accurately from the
5442 COERCE and COMPILE functions.
5443 * fixed bug 223: functional binding is considered to be constant
5444 only for symbols in the CL package.
5445 * fixed bug 231: SETQ did not check the type of a variable being set
5446 (reported by Robert E. Brown)
5447 * A new optimization for MAKE-INSTANCE has been included, fixing
5448 various bugs (including relating to :ALLOCATION :CLASS slots and
5449 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5451 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5452 ** As required by ANSI, LOOP now disallows anonymous collection
5453 clauses such as COLLECT I in conjunction with aggregate boolean
5454 clauses such as THEREIS (= I 1);
5455 ** LOOP now signals an error when any variable is reused in the
5456 same loop (including the potentially useful construct analogous
5457 to WITH A = 1 WITH A = (1+ A);
5458 ** IT is only a special loop symbol within the first clause of a
5459 conditional loop clause;
5460 ** LOOP with a typed iteration variable over a hashtable now
5461 signals a type error iff it should.
5462 * fixed some other bugs revealed by Paul Dietz' test suite:
5463 ** FILE-STREAM now names the class previously known as FD-STREAM;
5464 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5465 argument) no longer signals an error;
5466 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5467 of the slot symbol, rather than using the current package
5468 ((:CONC-NAME "") continues to intern the slot's name in the
5470 * incremented fasl file version number, because of the incompatible
5471 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5472 of the new implementation of DEFINE-COMPILER-MACRO.
5474 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5475 * Support for building SBCL for MIPS platforms running in
5476 little-endian mode has now been checked in, and basic
5477 functionality on said platforms verified.
5478 * minor incompatible change: PCL now records the pathname of a file
5479 in which methods and the like are defined, rather than its
5481 * minor incompatible change: TRUENAME now considers the truename of
5482 a file naming a directory to be the pathname with :DIRECTORY
5483 component indicating that directory.
5484 * minor incompatible change: a NAMED clause in the extended form of
5485 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5486 reason for the previous behaviour is unclear.
5487 * more systematization and improvement of CLOS and MOP conformance
5488 in PCL (thanks to Gerd Moellman and Pierre Mai):
5489 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5491 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5492 primary methods with no specializers;
5493 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5495 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5496 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5497 FORWARD-REFERENCED-CLASSes; error reporting on
5498 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5500 ** SXHASH on CLOS instances now uses a slot internal to the
5501 instance to return different numbers on distinct instances,
5502 while preserving the same return value through invocations of
5504 ** DEFMETHOD signals errors when methods with longer incongruent
5505 lambda lists are added to generic functions;
5506 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5507 CLASS, as specified in AMOP;
5508 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5509 on the order returned by the primary method for classes of
5510 class STANDARD-CLASS;
5511 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5512 * fixed some bugs shown by Paul Dietz' test suite:
5513 ** DOLIST puts its body in TAGBODY;
5514 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5516 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5517 value producing form;
5518 ** if more variables are given to PROGV than values, extra
5519 variables are bound and made to have no value;
5520 ** NSUBSTITUTE on list arguments gets the right answer with
5522 ** ELT signals an error of type TYPE-ERROR when the index argument
5523 is not a valid sequence index;
5524 ** LOOP signals (at macroexpansion time) an error of type
5525 PROGRAM-ERROR when duplicate variable names are found;
5526 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5527 ** FUNCALL of special-operators now cause an error of type
5529 ** PSETQ now works as required in the presence of side-effecting
5530 symbol-macro places;
5531 ** NCONC accepts any object as its last argument;
5532 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5534 ** loop-for-as-package does not require a package to be explicitely
5536 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5538 * fixed bug 166: compiler preserves "there is a way to go"
5539 invariant when deleting code.
5540 * fixed bug 172: macro lambda lists with required arguments after
5541 &REST arguments now cause an error to be signalled. (thanks to
5543 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5544 bug. (thanks to Matthew Danish)
5545 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5547 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5548 arguments are lexically rebound. (thanks to Gerd Moellmann and
5550 * fixed bug 194: error messages are now more informative when there
5551 is no primary method applicable in a call to a generic
5552 function. (thanks to Gerd Moellmann)
5553 * fixed bug in command line argument checking (thanks to Julian
5555 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5556 (thanks to Matthew Danish)
5557 * incremented fasl file version number, because of the
5558 SXHASH-related changes in the layout of CLOS data structures
5560 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5561 * minor incompatible change: The runtime (the Unix executable named
5562 "sbcl") is now much pickier about the .core files it will load.
5563 Essentially it now requires .core files to descend from the same
5564 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5565 as the runtime does. (The intent is to prevent the crashes which
5566 can occur, and which can even be reported as mysterious failures,
5567 when people patch the sources or change the build parameters
5568 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5569 sbcl and .core files.)
5570 * fixed bug: VALUES-LIST is no longer optimized away.
5571 * fixed bug 142: The FFI conversion of C string values to Lisp
5572 string values no longer conses excessively. (thanks to Nathan
5573 Froyd porting Raymond Toy's fix to CMU CL)
5574 * began to systematize and improve MOP conformance in PCL (thanks to
5575 Nathan Froyd, Gerd Moellman and Pierre Mai):
5576 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5578 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5579 ** FINALIZE-INHERITANCE is now called on class finalization;
5580 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5581 argument precedence order.
5582 * fixed bug 202: The compiler no longer fails on functions whose
5583 derived types contradict their declared type.
5584 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5585 so it can be non-toplevel.
5586 * The fasl file version number has changed (because of the new
5587 implementation of DEFMACRO).
5588 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5589 safe code, that any length requirement by their type-specifier
5590 argument is valid. The exceptions to this are described in bug
5592 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5593 functions now check the types of their inputs as required by ANSI.
5594 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5595 introduced symbol is DECLAREd to be SPECIAL.
5596 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5597 * fixed bug: :COUNT argument to sequence functions may be negative
5598 * fixed bug: body of DO-SYMBOLS may contain declarations
5599 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5600 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5601 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5602 symbol macro only once
5603 * fixed printing of call frame when argument list is unavailable
5604 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5605 * compiler no longer signals WARNING on unknown keyword
5608 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5609 * A beta-quality port to the mips architecture running Linux,
5610 based on the old CMUCL backend, has been made. It has been tested
5611 on a big-endian kernel, and works sufficiently well to be able to
5612 rebuild itself; it has not been tested in little-endian mode.
5613 * fixed an inconsistency between gencgc.c and purify.c which made
5614 dumping/loading .core files unreliable
5615 * fixed bug 120a: The compiler now deals correctly with IFs where
5616 the consequent is the same as the alternative, instead of
5617 misderiving the return type. (thanks to Alexey Dejneka)
5618 * fixed bug 113: Logical pathnames are now dumpable (the logical
5619 host is resolved at load-time, throwing an error if it is not
5621 * fixed bug 174: FORMAT's error message is slightly clearer when a
5622 non-printing character is used in a format directive.
5623 * fixed several bugs in compiler checking of type declarations, i.e.
5624 violations of the Python "declarations are assertions" principle
5625 (thanks to Alexey Dejneka)
5626 * fixed several bugs in PCL's error checking (thanks to Gerd
5628 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5630 * fixed bug in compilation of functions as first class values
5631 (thanks to Antonio Martinez-Shotton)
5632 * The compiler's handling TYPE-ERRORs which it can prove will
5633 inevitably happen at runtime has been cleaned up and corrected
5634 in several ways. (thanks to Alexey Dejneka)
5635 * improved argument type checking for various basic arithmetic
5636 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5637 lavished on them in the past that they can be compiled in many
5638 ways in different special cases
5639 * fixed bug 181: compiler checks validity of user supplied type
5641 * cleaned up code flushing in optimization: Function calls which
5642 should signal errors for safety purposes (e.g. which ANSI says
5643 should signal errors when their arguments are of incorrect type)
5644 are no longer optimized away.
5645 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5646 * incremented fasl file version number, because changes in the
5647 implementation of sequence functions like COERCE caused
5648 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5649 in old inline expansions) to become undefined. (Actually these
5650 changes were later undone, so we might very well be binary
5651 compatible with 0.7.7 after all, but leaving the version number
5652 incremented seemed like the simplest and most conservative
5655 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5656 * An alpha-quality port to the parisc architecture running Linux,
5657 based on the old CMUCL backend, has been made. This, even more so
5658 than the other backends, should be considered still a work in
5659 progress; known problems include that the Linux kernel in 64-bit
5660 mode does not propagate the correct sigcontext structure to
5661 userspace, and consequently SBCL on a parisc64 kernel will not
5663 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5664 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5665 suppressed.) Also now that the compiler is looking at declarations
5666 in the environment, it checks optimization declarations as well,
5667 and suppresses inlining when (> DEBUG SPEED).
5668 * More fixes have been made to treatment of floating point exception
5669 treatment and other Unix signals. In particular, floating point
5670 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5671 * The detection and handling of control stack exhaustion (infinite
5672 or very deeply nested recursion) has changed. Stack exhaustion
5673 detection is now done by write-protecting pages at the OS level
5674 and applies at all optimization settings; when found, a
5675 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5676 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5677 be caught using IGNORE-ERRORS.
5678 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5679 correctly when transforming recursive LABELS functions to LETs.
5680 (thanks to Alexey Dejneka)
5681 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5682 that are names of constants or global variables.
5683 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5684 alien routines with docstrings.
5685 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5686 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5688 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5689 (thanks to Eric Marsden)
5690 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5691 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5692 * Bug fix: The SPARC backend can now compile functions involving
5693 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5694 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5695 to a functions expecting a PATHNAME-DESIGNATOR.
5696 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5697 lambda lists. (thanks to Alexey Dejneka)
5698 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5699 functions so that EXPORTing the name of the class doesn't cause
5700 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5701 to Antonio Martinez for reporting this)
5702 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5703 constant-folded without failing an assertion. (thanks to Einar
5704 Floystad Dorum for reporting this)
5705 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5706 types are now dealt with more correctly by the compiler.
5707 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5708 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5709 behaviour analogous to RENAME-FILE. This puts its behaviour more
5710 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5712 * The fasl file version number has changed again. (because of the
5713 bug fix involving the names of PCL MAKE-INSTANCE functions)
5715 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5716 * bug fix: Floating point exceptions are treated much more
5717 consistently on the x86/Linux and PPC/Linux platforms.
5718 * Array initialization with :INITIAL-ELEMENT is now much faster for
5719 cases when the compiler cannot open code the array creation, but
5720 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5721 array accesses have also seen a speed increase.
5722 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5723 specified. (This was at the root of some bad interactions between
5724 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5726 * bug fix: Internal error arguments for undefined functions are now
5727 computed correctly on the PPC/Linux platform.
5728 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5729 Raymond Toy's patch for CMU CL)
5730 * Support for the Solaris 9 operating environment has been included
5731 (thanks to Daniel Merritt)
5732 * A very ugly but hopefully complete draft of the missing FFI chapter
5733 of the manual has been created by reformatting the corresponding
5734 CMU CL manual chapter into (currently very ugly and incoherent)
5735 DocBook and bringing it up to date for SBCL behavior. Thus, the
5736 manual is now essentially complete, at least by my extreme
5737 once-and-only-once standards, whereby it's acceptable to refer to
5738 the doc strings of SB-EXT functions as the primary documentation.
5739 * The fasl file version number has changed again, due to cleanup of
5740 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5741 is no longer a static symbol.)
5743 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5744 * SBCL now builds with OpenMCL (version 0.12) as the
5745 cross-compilation host; also, more progress has been made toward
5746 bootstrapping under CLISP.
5747 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5749 * bug 158 fixed: The compiler can now deal with integer loop
5750 increments different from 1; fixing this turned out also to fix
5752 * bug 169 fixed: no more bogus warnings about using lexical bindings
5753 despite the presence of perfectly good SPECIAL declarations (thanks
5754 to David Lichteblau)
5755 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5756 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5757 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5759 * bug 180 fixed: Method combination specifications no longer ignore
5760 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5761 * bug fix: Structure type predicate functions now check their argument
5762 count as they should.
5763 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5764 correctly. (thanks to Pierre Mai)
5765 * minor incompatible change: The --noprogrammer option is deprecated
5766 in favor of the new --disable-debugger option, which is very similar.
5767 (The major difference is that it takes effect at a slightly different
5768 time at startup, causing handling of errors in --sysinit and
5769 --userinit files will be affected differently.) The
5770 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5771 been added to allow this functionality to be controlled from ordinary
5772 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5773 maintainers, who might want to run non-interactive scripts to
5774 build SBCL cores which will later be used interactively.)
5775 * minor incompatible change: The LOAD function no longer, when given
5776 a wild pathname to load, loads all files matching that pathname.
5777 Instead, an error of type FILE-ERROR is signalled.
5779 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5780 * bug 147 fixed: The compiler preserves its block link/count
5781 invariants more correctly now so that it doesn't crash. (thanks
5783 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5785 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5786 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5787 no-value-for-this-character as NIL (as specified by ANSI).
5788 * HOST-NAMESTRING on physical pathnames now returns a string that is
5789 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5790 (thanks to Christophe Rhodes)
5791 * The Alpha port handles icache flushing more correctly. (thanks to
5793 * More progress has been made toward bootstrapping under CLISP. (thanks
5794 to Christophe Rhodes)
5795 * The fasl file format has changed again, because dynamic loading
5796 on OpenBSD (which has non-ELF object files) motivated some cleanups
5797 in the way that foreign symbols are transformed and passed around.
5798 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5799 is no longer treated as whitespace by the reader, but instead as
5800 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5801 |A
\7fB|, instead of A as it used to.
5803 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5804 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5805 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5806 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5807 this as of 0.7.1.45, but was left out of the previous news section
5808 (thanks to Dan Barlow)
5809 * SBCL now runs on the Solaris operating system on SPARC architectures
5810 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5811 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5812 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5813 * SPARC backend cleanups, allowing builds of cores optimized for V8
5814 and V9 SPARCS, and also emission of code targeted to a particular
5815 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5817 * SBCL is closer to bootstrapping under CLISP, thanks to various
5818 fixes by Christophe Rhodes.
5819 * The fasl file format has changed again, to allow the compiler's
5820 INFO database to support symbol macros.
5821 * The user manual (in doc/) is formatted into HTML more nicely.
5822 (thanks to coreythomas)
5823 * The system is smarter about SUBTYPEP relationships, especially
5824 those involving NOT types (including types such as ATOM which are
5825 represented internally using NOT types). Thus SUBTYPEP is less
5826 likely to return (VALUES NIL NIL) in general, and in particular
5827 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5829 * The fasl file format has changed again, because the internal
5830 representation of types now includes a new slot to support the new
5831 SUBTYPEP-of-NOT-types logic.
5832 * (not a change in the main branch of SBCL, but a related prototype
5833 which can hopefully be merged into the main branch of SBCL in the
5834 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5835 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5836 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5837 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5838 dispatch macro character combinations. (thanks to Alexey Dejneka)
5839 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5840 that superficially look like logical namestrings correctly.
5841 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5843 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5844 default supplied-p) for &optional and &key arguments. (thanks to
5847 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5848 * incompatible change: The compiler is now less aggressive about
5849 tail call optimization, doing it only when (> SPACE DEBUG) or
5850 (> SPEED DEBUG). (This is an incompatible change because there are
5851 programs which relied on the old CMU-CL-style behavior to optimize
5852 away their unbounded recursion which will now die of stack overflow.)
5853 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5854 for non-GENCGC systems has been increased to 20M (since that
5855 seems much closer to the likely performance optimum for modern
5856 systems than the old 4M value was)
5857 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5858 and *DEBUG-PRINT-LEVEL*
5859 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5860 of CMU CL's support for SPARC, and various endianness and other
5861 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5862 * new syntactic sugar for the Unix command line: --load foo.bar is now
5863 an alternate notation for --eval '(load "foo.bar")'.
5865 ** The system now detects stack overflow and handles it gracefully,
5866 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5867 optimization settings. (This is a good thing in general, and
5868 its introduction in this version should be particularly timely
5869 for anyone whose code fails because of suppression of tail
5871 ** The system now hunts for the C variable "environ" in a more
5872 devious way, to avoid segfaults when the C library version differs
5873 between compile time and run time. (thanks to Christophe Rhodes)
5874 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5875 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5876 ** The compiler no longer issues bogus style warnings for undefined
5877 classes in the same source file as the DEFCLASSes which defined
5878 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5880 ** fixes in CONDITION class precedence list for undefined function
5881 errors (thanks to Alexei Dejneka)
5882 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5883 correctly. (thanks to Dan Barlow)
5884 ** portability fixes aiming at bootstrapping under CLISP (thanks
5885 to Dave McDonald and Christophe Rhodes)
5886 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5887 ** fixes in type translation and and type inference (thanks to
5889 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5890 ** various fixes in the new ports (thanks to Dan Barlow)
5891 * several changes related to debugging:
5892 ** suppression of tail recursion, as noted above
5893 ** stack overflow detection, as noted above
5894 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5895 is now the default. (For some time encapsulation has been more
5896 reliable than the breakpoint-based :ENCAPSULATE NIL
5897 implementation, at least on X86 systems; and I just noticed that
5898 encapsulation also seems closer to the spirit of the ANSI
5901 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5903 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5904 up properly again. (There was a packaging bug in 0.7.0 which
5905 left their definitions in SB-SYS::LOAD-FOREIGN and
5906 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5907 vital for most things which interface to C-level interfaces,
5908 like extensions working with sockets or databases or
5909 Perl-compatible regexes or whatever, and the need to fix
5910 this bug is the main reason that 0.7.1 was released so
5912 ** DEFGENERIC is now choosier about the methods it redefines, so that
5913 reLOADing a previously-LOADed file containing DEFGENERICs does
5914 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5915 cycle now works as it should. (thanks to Alexey Dejneka)
5916 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5917 fixed by Christophe Rhodes. (He actually submitted this patch
5918 months ago, and I delayed until after 0.7.0.)
5919 ** Bug 111 (internal compiler confusion about runtime checks on
5920 FUNCTION types) was fixed by Alexey Dejneka.
5921 * Some internal cleanups (getting rid of variables which aren't
5922 needed now that the byte interpreter is gone) caused the fasl
5923 file format number to change again.
5925 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5926 * major incompatible change: The default fasl file extension, i.e. the
5927 default extension for files produced by COMPILE-FILE, has changed
5928 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5930 ** There are many changes in the implementation of the compiler.
5931 SBCL is now essentially a compiler-only implementation of ANSI
5932 Common Lisp. EVAL still "interprets" a few special cases, but
5933 almost all the interesting cases are handled by creating
5934 a LAMBDA expression, calling COMPILE on it, then calling
5935 FUNCALL on the result.
5936 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5937 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5938 Since the code is newer, there might still be some new bugs
5939 (though not as many as before Martin Atzmueller's fixes:-). But
5940 the new code is substantially simpler and clearer, and hopefully
5941 any remaining bugs will be simpler, less fundamental, and more
5942 fixable then the bugs in the old code.
5943 ** The revised compiler is still a little unsteady on its feet.
5945 *** The debugging information it produces (particularly the names
5946 of FUNCTION objects) is sometimes much less useful than what
5947 the old compiler produced.
5948 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5949 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5950 within a MACROLET) has been temporarily weakened.
5951 ** There are new compiler optimizations for various functions:
5952 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5953 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5954 *** the math functions TRUNCATE, FLOOR, and CEILING
5955 *** the function-of-all-trades COERCE
5956 Mostly these should be transparent, but there's one
5957 potentially-annoying problem (bug 117): when the compiler
5958 inline-expands a function and does type analysis on the result,
5959 it can create control paths which have type mismatches, and
5960 when it can't prove that those control paths aren't taken,
5961 it will issue WARNINGs about the type mismatches. This is
5962 a particular problem in practice for the new sequence functions.
5963 It's not clear how this should be fixed, and for now, a
5964 workaround is given in the entry for 117 in the BUGS file.
5965 ** (Because of the interaction between the two previous items --
5966 occasional inlining problems and new inline expansions -- some
5967 of the new sequence function optimizations won't really kick in
5968 completely until debugging information, and then inlining, are
5969 straightened out in some future version.)
5970 * minor incompatible changes:
5971 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5972 DIRECTORY no longer implicitly promotes NIL slots of its
5973 pathname argument to :WILD. In particular, when you ask for the
5974 contents of a directory (which you used to be able to do without
5975 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5976 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5977 ** changes in behavior that ANSI explicitly defines to be
5978 implementation dependent:
5979 *** The new compiler-only implementation still conforms with ANSI,
5980 but acts a little different than before. Besides the obvious
5981 changes in performance tradeoffs (that the cost per form passed
5982 to EVAL has gone up, and the cost per form executed by EVAL
5983 has gone down), the behavior of the system changes a little
5984 because there are no longer any interpreted function objects.
5985 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5986 e.g. doing COMPILE on the output of interactive DEFUN is
5988 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5990 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5991 has changed from (:CL) to NIL.
5992 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5993 e.g. #\Newline and #\Tab, don't have names specified in the
5994 ANSI Common Lisp standard, is now based on their ASCII symbolic
5995 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5996 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5997 are no longer used for output.
5998 ** changes in internal implementation constants:
5999 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
6000 4 million. (If your application spends a lot of time GCing and
6001 you have a lot of RAM, you might want to experiment with
6002 increasing it even more.)
6003 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
6004 However, almost all old code should still continue to work without
6005 immediate update, as SB-C-CALL is now a (deprecated) nickname
6007 ** Old operator names in the style DEF-FOO are now deprecated in
6008 favor of new corresponding names DEFINE-FOO, for consistency with
6009 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
6010 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
6011 internal symbols, but a few supported extensions like
6012 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
6013 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
6014 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
6015 etc. as you get deeper into recursive calls to the debugger
6016 command loop, instead of the old "5]", "5]]", "5]]]"
6017 sequence. (I was motivated to do this when squabbles between
6018 ILISP and SBCL left me very deeply nested in the debugger. In the
6019 short term, this change will probably provoke more ILISP/SBCL
6020 squabbles, but hopefully it will be an improvement in the long run.)
6021 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
6022 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
6023 function, since declaiming return types involving aliens is
6024 (1) annoyingly messy to do by hand and (2) vital to efficient
6025 compilation of code which calls such functions.
6026 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
6027 longer reexported by the SB-EXT package. They're solely useful
6028 for alien code, so it seems more logical that you should get
6029 them from the SB-ALIEN package, not in SB-EXT.
6030 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
6031 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
6032 features. Instead, the code that they used to control is always
6033 built into the system.
6034 * many other bug fixes
6035 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
6036 advantage of the new EVAL-WHEN stuff and to clean them up in
6037 general, and they are now more ANSI-compliant in a number of
6038 ways. Martin Atzmueller is responsible for a lot of this.
6039 ** Besides the cleanups discussed above, Martin Atzmueller fixed
6041 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
6042 *** correct ERROR type for various file operations
6043 *** some fixes for Lisp streams
6044 *** DEFMETHOD syntax checking
6045 *** changing old weird representation of debug information as
6046 strings (which, among their other deficiencies, don't transform
6047 correctly when you rename packages, and don't change their
6048 print representation when you change things like *PACKAGE*
6049 and *PRINT-LENGTH*) to symbols and lists of symbols
6050 He also made several improvements and fixed several bugs in DESCRIBE.
6051 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6053 *** misbehavior of WRITE-STRING/WRITE-LINE
6054 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6055 and several other LOOP problems as well
6056 *** DIRECTORY when similar filenames are present
6057 *** DEFGENERIC with :METHOD options
6058 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6059 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6060 *** argument ordering in FIND with :TEST option
6061 *** mishandled package designator argument in APROPOS-LIST
6062 *** various problems in the backquote readmacro
6063 *** a bug in APROPOS
6064 *** probably some others that I'm not describing very well here,
6065 since the CVS log documents them by reference to sbcl-devel
6066 messages, and the SourceForge archives aren't working well.:-(
6067 ** Dan Barlow improved the Alpha port (and is making progress on the
6068 PPC port, for those of you who think different).
6069 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6070 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6071 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6072 continues to work on the SPARC port (for those of you in a position
6073 to look down upon our little PC-compatible boxes from a great height).
6074 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6075 and uses that copy, rather than the current dynamic value, when
6076 it's trying to decide whether to truncate output. Thus e.g.
6077 (let ((*print-lines* 50))
6078 (pprint-logical-block (stream nil)
6080 (let ((*print-lines* 8))
6081 (print (aref possiblybigthings i) stream)))))
6082 should now truncate the logical block only at 50 lines, instead of
6083 often truncating it at 8 lines, as it did before.
6084 * The doc/cmucl/ directory, containing old CMU CL documentation
6085 from the time of the fork, is no longer part of the base system.
6086 SourceForge has shut down its anonymous FTP service, and with it
6087 my original plan for distributing the old CMU CL documentation
6088 there. For now, if you need these files you can download an old
6089 SBCL source release and extract them from it.
6090 * The fasl file version number changed again, for dozens of reasons,
6091 some of which are apparent above.
6093 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6094 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6095 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6096 patch, so that DISASSEMBLE output is much nicer.
6097 * The code in the SB-PROFILE package now seems reasonably stable.
6098 I still haven't decided what the final interface should look like
6099 (I'd like PROFILE to interact cleanly with TRACE, since both
6100 facilities use function encapsulation) but if you have a need
6101 for profiling now, you can probably use it successfully with
6102 the current CMU-CL-style interface.
6103 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6104 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6105 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6106 link now returns the dangling link itself, and for similar
6107 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6108 link itself. (In these cases the old code signalled an error and
6109 looped endlessly, respectively.) Thus, DIRECTORY now works even
6110 in the presence of dangling and cyclic symbolic links.
6111 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6112 is now a supported extension again, since the consensus on
6113 sbcl-devel was that it can be useful for ordinary development
6114 work, not just for debugging SBCL itself.
6115 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6116 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6117 that currently-defined functions might be redefined later with
6118 different return types.
6119 * Hash tables can be printed readably, as inspired by CMU CL code
6120 of Eric Marsden and SBCL code of Martin Atzmueller.
6121 * better error handling in CLOS method combination, thanks to
6122 Martin Atzmueller porting Pierre Mai's CMU CL patches
6123 * more overflow fixes for >16Mbyte I/O buffers
6124 * A bug in READ has been fixed, so that now a single Ctrl-D
6125 character suffices to cause end-of-file on character streams.
6126 In particular, now you only need one Ctrl-D at the command
6127 line (not two) to exit SBCL.
6128 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6130 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6131 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6132 does the right thing.
6133 * The implementation of some type tests, especially for CONDITION
6134 types, is now tidier and maybe faster, due to CMU CL code
6135 originally by Douglas Crosher, ported by Martin Atzmueller.
6136 * Some math functions have been fixed, and there are new
6137 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6138 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6139 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6140 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6141 likely to be built into sbcl-0.7.0.)
6142 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6143 CL, ported to SBCL by Martin Atzmueller)
6144 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6145 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6146 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6147 * There's a new slam.sh hack to shorten the edit/compile/debug
6148 cycle for low-level changes to SBCL itself, and a new
6149 :SB-AFTER-XC-CORE target feature to control the generation of
6150 the after-xc.core file needed by slam.sh.
6151 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6152 COMPILE-FILE is no longer supported, so that now every function
6153 gets an entry point, so that block compilation looks a little
6154 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6155 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6156 returns the number of bytes consed since the system started,
6157 rather than the number consed since the first time the function
6158 was called. (The new definition parallels ANSI functions like
6159 CL:GET-INTERNAL-RUN-TIME.)
6160 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6161 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6162 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6163 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6164 * Fasl file version numbers are now independent of the target CPU,
6165 since historically most system changes which required version
6166 number changes have affected all CPUs equally. Similarly,
6167 the byte fasl file version is now equal to the ordinary
6170 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6171 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6172 is no longer recognized. I apologize for this, because it was
6173 listed in SB-EXT as a supported extension, but I found that
6174 its existing behavior was poorly specified, as well as incorrectly
6175 specified, and it looked like too much of a mess to straighten it
6176 out. I have enough on my hands trying to get ANSI stuff to work..
6177 * many patches ported from CMU CL by Martin Atzmueller, with
6178 half a dozen bug fixes in pretty-printing and the debugger, and
6179 half a dozen others elsewhere
6180 * fixed bug 13: Floating point infinities are now supported again.
6181 They might still be a little bit flaky, but thanks to bug reports
6182 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6183 as flaky as they were.
6184 * The --noprogrammer command line option is now supported. (Its
6185 behavior is slightly different in detail from what the old man
6186 page claimed it would do, but it's still appropriate under the
6187 same circumstances that the man page talks about.)
6188 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6189 are now supported, and enabled by default. Thus, the compiler can
6190 handle many floating point and complex operations much less
6191 inefficiently. (Thus e.g. you can implement a complex FFT
6193 * The compiler now detects type mismatches between DECLAIM FTYPE
6194 and DEFUN better, and implements CHECK-TYPE more correctly, and
6195 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6196 thanks to patches from Martin Atzmueller.
6197 * various fixes to make the cross-compiler more portable to
6198 ANSI-conforming-but-different cross-compilation hosts (notably
6199 Lispworks for Windows, following bug reports from Arthur Lemmens)
6200 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6201 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6202 fixed thanks to Pierre Mai's CMU CL patches.
6203 * fixes to keep the system from overflowing internal counters when
6204 it tries to use i/o buffers larger than 16M bytes
6205 * fixed bug 45a: Various internal functions required to support
6206 complex special functions have been merged from CMU CL sources.
6207 (When I was first setting up SBCL, I misunderstood a compile-time
6208 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6209 * improved support for type intersection and union, fixing bug 12
6210 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6211 more obscure bugs as well
6212 * some steps toward byte-compiling non-performance-critical
6213 parts of the system, courtesy of patches from Martin Atzmueller
6214 * Christophe Rhodes has made some debian packages of sbcl at
6215 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6216 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6217 stable, but are nonetheless usable. When he's ready, I'd be happy
6218 to add them to the SourceForge "File Releases" section. (And if
6219 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6220 * new fasl file format version number (because of changes in
6221 internal representation of (OR ..) types to accommodate the new
6222 support for (AND ..) types, among other things)
6224 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6225 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6227 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6229 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6230 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6231 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6232 * DESCRIBE now works on structure objects again.
6233 * Most function call argument type mismatches are now handled as
6234 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6235 know whether the function will be redefined before the call is
6236 executed. (The compiler could flag local calls with full WARNINGs,
6237 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6238 it doesn't keep track of enough information to know whether calls
6239 are local in this sense.)
6240 * Compiler output is now more verbose, with messages truncated
6241 later than before. (There should be some supported way for users
6242 to override the default verbosity, but I haven't decided how to
6243 provide it yet, so this behavior is still controlled by the internal
6244 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6245 src/compiler/ir1util.lisp.)
6246 * Fasl file format version numbers have increased again, because
6247 support for the Gray streams extension changes the layout of the
6248 system's STREAM objects.
6249 * The Gray subclassable streams extension now works, thanks to a
6250 patch from Martin Atzmueller.
6251 * The full LOAD-FOREIGN extension (not just the primitive
6252 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6253 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6254 but like most other programs, it defaults to copying the Unix
6255 environment from the original process instead of starting the
6256 new process in an empty environment.
6257 * Extensions which manipulate the Unix environment now support
6258 an :ENVIRONMENT keyword option which doesn't smash case or
6259 do other bad things. The CMU-CL-style :ENV option is retained
6260 for porting convenience.
6261 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6262 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6264 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6266 * A patch from Martin Atzmueller seems to have solved the SIGINT
6267 problem, and as far as we know, signal-handling now works cleanly.
6268 (If you find any new bugs, please report them!)
6269 * The system no longer defaults Lisp source file names to types
6270 ".l", ".cl", or ".lsp", but only to ".lisp".
6271 * The compiler no longer uses special default file extensions for
6272 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6273 seems to expect a single default extension for all compiled code,
6274 and there's no compelling reason to try to stretch the standard
6275 to allow two different extensions.) Instead, byte-compiled files
6276 default to the same extension as native-compiled files.
6277 * Fasl file format version numbers have increased again, because
6278 a rearrangement of internal implementation packages made some
6279 dumped symbols in old fasl files unreadable in new cores.
6280 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6281 many fewer weird special cases.
6282 * Bug #17 (differing COMPILE-FILE behavior between logical and
6283 physical pathnames) has been fixed, and some related misbehavior too,
6284 thanks to a patch from Martin Atzmueller.
6285 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6286 by Tim Moore, ported to SBCL by Martin Atzmueller.
6287 * Martin Atzmueller fixed several filesystem-related problems,
6288 including bug #36, in part by porting CMU CL patches, which were
6289 written in part by Paul Werkowski.
6290 * More compiler warnings in src/runtime/ are gone, thanks to
6291 more patches from Martin Atzmueller.
6292 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6295 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6297 * DESCRIBE now works on CONDITION objects.
6298 * The debugger now handles errors which arise when trying to print
6299 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6301 * The build system now uses an additional file, customize-target-features.lisp,
6302 to allow local modifications to the target *FEATURES* list. (The point of
6303 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6304 debugging features enabled, without having to worry about propagating it
6305 into everyone's system when I do a "cvs update".) When no
6306 customize-target-features.lisp file exists, the target *FEATURES* list
6307 should be constructed the same way as before.
6308 * fixed bugs in DEFCONSTANT ANSI-compatibility:
6309 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
6310 warn about behavior which is undefined under the ANSI spec. Note: This
6311 is specified by ANSI, but it's not very popular with programmers.
6312 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
6313 macro in the SBCL sources for an example of a workaround which you
6314 might use to make portable ANSI-standard code which does what you want.
6315 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
6316 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
6317 when it's used as a non-toplevel form. (This is required in order
6318 to implement the DEFCONSTANT-EQX macro.)
6319 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6320 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6321 funny things, due to bugs in the implementation of EVAL-WHEN
6322 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6323 non-toplevel DEFCONSTANTs are uncommon.)
6324 * The core file version number and fasl file version number have been
6325 incremented, because the old noncompliant DEFCONSTANT behavior involved
6326 calling functions which no longer exist, and because I also took the
6327 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6328 * fixed bug 1 (error handling before read-eval-print loop starts), and
6329 redid debugger restarts and related debugger commands somewhat while
6331 ** The QUIT debugger command is gone, since it did something
6332 rather different than the SB-EXT:QUIT command, and since it never
6333 worked properly outside the main toplevel read/eval/print loop.
6334 Invoking the new TOPLEVEL restart provides the same functionality.
6335 ** The GO debugger command is also gone, since you can just invoke
6336 the CONTINUE restart directly instead.
6337 ** The TOP debugger command is also gone, since it's redundant with the
6338 FRAME 0 command, and since it interfered with abbreviations for the
6340 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6342 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6343 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6344 some porting work by Martin Atzmueller)
6345 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6346 with a boatload of patches which he ported to SBCL. Now that those
6348 ** The system tries to make sure that its low-priority messages
6349 are prefixed by semicolons, to help people who like to use
6350 syntax highlighting in their ILISP buffer. (This patch
6351 was originally due to Raymond Toy.)
6352 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6353 patches originally written by Raymond Toy.
6354 ** The compiler understands coercion between single-value and
6355 multiple-VALUES type expressions better, getting rid of some very
6356 weird behavior, thanks to patches originally by Robert MacLachlan
6357 and Douglas Crosher.
6358 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6359 lambda lists, thanks to a patch originally by Pierre Mai.
6360 ** The system no longer bogusly warns about "abbreviated type
6362 ** The compiler gets less confused by inlining and RETURN-FROM,
6363 thanks to some patches originally by Tim Moore.
6364 ** The system no longer hangs when dumping circular lists to fasl
6365 files, thanks to a patch originally from Douglas Crosher.
6366 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6367 undefined function error.
6368 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6369 in structure slot initforms) for now, documented workaround instead:-|
6370 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6371 * fixed bug 5: added stubs for various Gray stream functions called
6372 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6373 installed, at least appropriate type errors are generated
6374 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6375 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6376 consistently in DEFMETHOD forms.
6377 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6378 it doesn't seem to affect SBCL after all
6379 * The C runtime system now builds with better optimization and many
6380 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6382 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6384 * The system is now under CVS at SourceForge (instead of the
6385 CVS repository on my home machine).
6386 * The new signal handling code has been tweaked to treat register
6387 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6388 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6389 downstream, e.g. in debug-int.lisp, has implicit dependencies
6390 on the unsignedness of integer representation of machine words,
6391 and that caused the system to bomb out with infinite regress
6392 when trying to recover from type errors involving signed values,
6393 e.g. (BUTLAST '(1 2 3) -1).)
6394 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6395 (This was one of the bugs Peter Van Eynde reported back in July.)
6396 * The system now uses code inspired by Colin Walters' O(N)
6397 implementation of MAP (from the cmucl-imp@cons.org mailing
6398 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6399 inline the MAP operation, and there is more than one
6400 sequence argument to the MAP call (so that it can't just
6401 do ETYPECASE once and for all based on the type of the
6402 single sequence argument). (The old non-inline implementation
6403 of the general M-argument sequence-of-length-N case required
6404 O(M*N*N) time when any of the sequence arguments were LISTs.)
6405 * The QUIT :UNIX-CODE keyword argument has been renamed to
6406 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6407 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6409 * Raymond Wiker's patches to port dynamic loading from Linux to
6410 FreeBSD have been added.
6411 * The BUGS file is now more nearly up to date, thanks in large part
6412 to Martin Atzmueller's review of it.
6413 * The debugger now flushes standard output streams before it begins
6414 its output ("debugger invoked" and so forth).
6415 * The core version number and fasl file version number have both
6416 been incremented, because of incompatible changes in the layout
6418 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6419 used to not be called for a saved Lisp image.)
6420 * Martin Atzmueller's version of a patch to fix a compiler crash,
6421 as posted on sbcl-devel 13 September 2000, has been installed.
6422 * Instead of installing Martin Atzmueller's patch for the
6423 compiler transform for SUBSEQ, I deleted the compiler transform,
6424 and transforms for some similar consing operations.
6425 * A bug in signal handling which kept TRACE from working on OpenBSD
6427 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6428 away by constant folding
6429 * The system now defines its address space constants in one place
6430 (in the Lisp sources), and propagates them automatically elsewhere
6431 (through GENESIS and the sbcl.h file). Therefore, patching the
6432 address map is less unnecessarily tedious and error-prone. The
6433 Lisp names of address space constants have also been systematized.
6434 * CVS tags like dollar-Header-dollar have been removed from
6435 the sources, because they have never saved me trouble and
6436 they've been source of trouble working with patches and other
6437 diff-related operations.
6438 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6439 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6441 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6443 * The system has been ported to OpenBSD.
6444 * The system now compiles with a simple "sh make.sh" on the systems
6445 that it's supported on. I.e., now you no longer need to tweak
6446 text in the target-features.lisp-expr and symlinks in src/runtime/
6447 by hand, the make.sh takes care of it for you.
6448 * The system is no longer so grossly inefficient when compiling code
6449 involving vectors implemented as general (not simple) vectors (VECTOR T),
6450 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6451 which dares to use the various sequence functions on non-simple
6452 vectors, takes less of a performance hit.
6453 * There is now a primitive type predicate VECTOR-T-P
6454 to test for the (VECTOR T) type, so that e.g.
6455 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6456 can now be compiled with some semblance of efficiency. (The old code
6457 turned the type declaration into a full call to %TYPEP at runtime!)
6458 * AREF on (VECTOR T) is still not fast, since it's still compiled
6459 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6460 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6461 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6462 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6463 without making full calls to SUBTYPEP at runtime.
6464 (Some analogous efficiency issues for non-simple vectors specialized to
6465 element types other than T, or for non-simple multidimensional arrays,
6466 have not been addressed. They could almost certainly be handled the
6467 same way if anyone is motivated to do so.)
6468 * The changes in array handling break binary compatibility, so
6469 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6470 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6471 instead of (VALUES T T).
6472 * By following the instructions that Dan Barlow posted to sbcl-devel
6473 on 2 July 2000, I was able to enable primitive dynamic object
6474 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6475 functionality is not implemented (since it calls ld to resolve
6476 library references automatically, requiring RUN-PROGRAM for its
6477 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6478 try to resolve library references) is now supported.
6479 * The system now flushes the standard output streams when it terminates,
6480 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6481 them at several other probably-convenient times, e.g. in each pass of
6482 the toplevel read-eval-print loop, and after evaluating a form given
6483 as an "--eval" command-line option. (These changes were motivated by a
6484 discussion of stream flushing issues on cmucl-imp in August 2000.)
6485 * The source transform for TYPEP of array types no longer assumes
6486 that an array whose element type is a not-yet-defined type
6487 is implemented as an array of T, but instead punts, so that the
6488 type will be interpreted at runtime.
6489 * There is now some support for cross-compiling in make.sh: each of
6490 the phases of make.sh has its own script. (This should be transparent
6491 to people doing ordinary, non-cross-compile builds.)
6492 * Since my laptop doesn't have hundreds of megabytes of memory like
6493 my desktop machine, I became more motivated to do some items on
6494 my to-do list in order to reduce the size of the system a little:
6495 ** Arrange for various needed-only-at-cold-init things to be
6496 uninterned after cold init. To support this, those things have
6497 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6498 symbols with such names are now uninterned after cold init).
6499 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6500 fasl files for cold load.
6501 ** Remove the old compiler structure pooling code (which used to
6502 be conditional on the target feature :SB-ALLOC) completely.
6503 ** Redo the representation of some data in cold init to be more compact.
6504 (I also looked into supporting byte compiled code at bootstrap time,
6505 which would probably reduce the size of the system a lot, but that
6506 looked too complicated, so I punted for now.)
6507 * The maximum signal nesting depth in the src/runtime/ support code has
6508 been reduced from 4096 to 256. (I don't know any reason for the very
6509 large old value. If the new smaller value turns out to break something,
6510 I'll probably just bump it back up.)
6511 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6513 * Many, many bugs reported by Peter Van Eynde have been added to
6514 the BUGS list; some have even been fixed.
6515 * While enabling dynamic object file loading, I tried to make the
6516 code easier to understand, renaming various functions and variables
6517 with less ambiguous names, and changing some function calling
6518 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6519 * While trying to figure out how to do the OpenBSD port, I tried to
6520 clean up some of the code in src/runtime/. In particular, I dropped
6521 support for non-POSIX signal handling, added various comments,
6522 tweaked the code to reduce the number of compilation warnings, and
6523 renamed some files to increase consistency.
6524 * To support the new automatic configuration functionality in make.sh,
6525 the source file target-features.lisp-expr has been replaced with the
6526 source file base-target-features.lisp-expr and the machine-generated
6527 file local-target-features.lisp-expr.
6528 * fixed a stupid quoting error in make.sh so that using CMU CL
6529 "lisp -batch" as cross-compilation host works again
6531 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6533 * DESCRIBE no longer tries to call itself recursively to describe
6534 bound/fbound values, so that it no longer fails on symbols which are
6535 bound to themselves (like keywords, T, and NIL).
6536 * DESCRIBE now works on generic functions.
6537 * The printer now prints less-screwed-up representations of closures
6538 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6539 * A private symbol is used instead of the :EMPTY keyword previously
6540 used to mark empty slots in hash tables. Thus
6541 (DEFVAR *HT* (MAKE-HASH-TABLE))
6542 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6543 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6544 now does what ANSI says that it should. (You can still get
6545 similar noncompliant behavior if bang on the hash table
6546 implementation with all the symbols you get back from
6547 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6548 This breaks binary compatibility, since tests for equality to
6549 :EMPTY are wired into things like the macroexpansion of
6550 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6552 * There's now a minimal placeholder implementation for CL:STEP,
6553 as required by ANSI.
6554 * An obscure bug in the interaction of the normal compiler, the byte
6555 compiler, inlining, and structure predicates has been patched
6556 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6557 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6559 * Missing ordinary arguments in a macro call are now detected even
6560 when the macro lambda list contains &KEY or &REST.
6561 * The debugger no longer complains about encountering the top of the
6562 stack when you type "FRAME 0" to explicitly instruct it to go to
6563 the top of the stack. And it now prints the frame you request even
6564 if it's the current frame (instead of saying "You are here.").
6565 * As specified by ANSI, the system now always prints keywords
6566 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6568 * The default initial SIZE of HASH-TABLEs is now smaller.
6569 * Type information from CLOS class dispatch is now propagated
6570 into DEFMETHOD bodies, so that e.g.
6571 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6573 is now basically equivalent to
6574 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6575 (DECLARE (TYPE SINGLE-FLOAT X))
6577 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6578 operation, without having to do run-time type dispatch.
6579 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6580 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6581 * Since I don't seem to be making big file reorganizations very often
6582 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6583 is overflowing my ability to conveniently back them up), I've finally
6584 checked the system into CVS. (The CVS repository is on my home system,
6585 not at SourceForge -- putting it on SourceForge might come later.)
6586 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6587 high-level GC-NOTIFY-FOO functions send their output. (There's
6588 still very little control of where low-level verbose GC functions
6589 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6590 less than it used to -- the GC-NOTIFY-FOO functions are now under
6591 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6592 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6593 in only one place in the source code, and propagates it automatically
6594 everywhere that it's needed. Thus e.g. when I bump the version from
6595 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6596 * The C source files now include boilerplate legalese and documentation
6597 at the head of each file (just as the Lisp source files already did).
6598 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6599 to his page will be replaced with a link to his new CLiki service.
6601 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6603 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6604 * The build process now looks for GNU make under the default name "gmake",
6605 instead of "make" as it used to. If GNU make is not available as "gmake"
6606 on your system, you can change this default behavior by setting the
6607 GNUMAKE environment variable.
6608 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6609 can build without error under CMU CL.
6611 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6613 * There is now a partial SBCL user manual (with some new text and some
6614 text cribbed from the CMU CL manual).
6615 * The beginnings of a profiler have been added (starting with the
6616 CMU CL profiler and simplifying and cleaning up). Eventually the
6617 main interface should be through the TRACE macro, but for now,
6618 it's still accessed through vaguely CMU-CL-style functions and macros
6619 exported from the package SB-PROFILE.
6620 * Some problems left over from porting CMU CL to the new
6621 cross-compilation bootstrap process have been cleaned up:
6622 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6623 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6624 part when getting rid of the compiler *BACKEND* stuff.)
6625 ** The value of *NULL-TYPE* was screwed up, because it was
6626 being initialized before the type system knew the final
6627 definition of the 'NULL type. This screwed up several key
6628 optimizations in the compiler, causing inefficiency in all sorts
6629 of places. (I found it because I wanted to understand why
6630 GET-INTERNAL-RUN-TIME was consing.)
6631 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6632 PROCLAIM FTYPE information. Unfortunately this broke binary
6633 compatibility again, since now the forms output by DEFGENERIC
6634 to refer to functions which didn't exist in 0.6.3.
6635 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6636 can use the new (as of 0.6.3) transform for SOME into MAP into
6638 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6639 values to (INTEGER 0 1000000), so that the time code will no longer
6640 occasionally get blown up by Linux returning 1000000 microseconds
6641 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6642 its output conform to the ANSI spec. (Alas, this makes its output
6643 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6644 * A full call to MAP NIL with a single sequence argument no longer conses.
6645 * fixes to problems pointed out by Martin Atzmueller:
6646 * The manual page no longer talks about multiprocessing as though
6647 it were currently supported.
6648 * The ILISP support patches have been removed from the distribution,
6649 because as of version 5.10.1, ILISP now supports SBCL without us
6650 having to maintain patches.
6651 * added a modified version of Raymond Toy's recent CMU CL patch for
6652 EQUALP comparison of HASH-TABLE
6654 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6656 * The system still can't cross-compile itself with
6657 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6658 entails), but at least it can compile more of itself that way
6659 than it used to be able to, and various buglets which were uncovered
6660 by trying to cross-compile itself that way have now been fixed.
6661 * This release breaks binary compatibility again. This time
6662 at least I've incremented the FASL file format version to 2, so that the
6663 problem can be detected reliably instead of just causing weird errors.
6664 * various new style warnings:
6665 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6666 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6667 ** using the lexical binding of a variable named in the *FOO* style
6668 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6669 as specified by ANSI.
6670 * *RANDOM-STATE* is no longer automatically initialized from
6671 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6672 default behavior of the system is to repeat its behavior every time
6673 it's run. If you'd like to change this behavior, you can always
6674 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6675 old convention there was no comparably easy way to get the system to
6676 repeat its behavior every time it was run.
6677 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6678 FTYPE declarations has been removed, in favor of their ANSI
6679 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6680 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6681 the types of their sequence arguments can be determined at compile time.
6682 This is done through a new open code expansion for MAP which eliminates
6683 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6684 argument types can be determined at compile time.
6685 * The optimizer now transforms COERCE into an identity operation when it
6686 can prove that the coerced object is already of the correct type. (This
6687 can be a win for machine generated code, including the output of other
6688 optimization transforms, such as the MAP transform above.)
6689 * Credit information has been moved from source file headers into CREDITS.
6690 * Source file headers have been made more standard.
6691 * The CASE macro now compiles without complaining even when it has
6694 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6696 * (Note that the way that the PCL macroexpansions were rewritten
6697 to accommodate the change in DEFGENERIC below breaks binary
6698 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6699 not run under sbcl-0.6.2. Once we get out of alpha releases,
6700 i.e. hit release 1.0.0, we'll probably try to maintain binary
6701 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6702 and sbcl-1.4.4. Until then, however, it might be fairly common
6703 for maintenance releases to break binary compatibility.)
6704 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6706 * The reporting of unhandled signals has been changed to print some
6707 explanatory text as well as the report form. (Previously only
6708 the report form was printed.)
6709 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6710 it defines, so that the compiler no longer issues undefined function
6711 warnings for compiled-but-not-yet-loaded generic functions.
6712 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6713 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6714 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6715 section of the ANSI spec are supported.
6716 * The "" nickname for the "KEYWORD" package has been removed.
6717 The reader still handles symbol tokens which begin with a package marker
6718 as keywords, but it doesn't expose its mechanism for doing so in the
6719 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6720 * The system now issues STYLE-WARNINGs for contradictory TYPE
6721 proclamations. (Warnings for contradictory FTYPE proclamations would
6722 be nice too, but those can't be done usefully unless the type system
6723 is made smarter about FUNCTION types.)
6724 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6725 systematized, so that "*target-*.lisp is supposed to exist only on the
6726 target and imply that there's a related file which exists on the
6727 host, and *host-*.lisp is supposed to exist only on the host and imply
6728 that there's a related file which exists on the target. This involves a
6729 lot of renaming. Hopefully the acute confusion caused by the renaming
6730 will be justified by the reduction in chronic confusion..
6731 ** runtime-type.lisp -> early-target-type.lisp
6732 ** target-type.lisp -> late-target-type.lisp
6733 ** early-host-format.lisp -> early-format.lisp
6734 ** late-host-format.lisp -> late-format.lisp
6735 ** host-error.lisp -> misc-error.lisp
6736 ** early-error.lisp -> early-target-error.lisp
6737 ** late-error.lisp -> late-target-error.lisp
6738 ** host-defboot.lisp -> early-defboot.lisp
6739 ** code/misc.lisp -> code/target-misc.lisp
6740 ** code/host-misc.lisp -> code/misc.lisp
6741 ** code/numbers.lisp -> code/target-numbers.lisp
6742 ** code/early-numbers.lisp -> numbers.lisp
6743 ** early-host-type.lisp -> early-type.lisp
6744 ** late-host-type.lisp -> late-type.lisp
6745 ** host-typep.lisp -> typep.lisp
6746 ** load.lisp -> target-load.lisp
6747 ** host-load.lisp -> load.lisp
6748 ** host-disassem.lisp -> disassem.lisp
6749 ** host-insts.lisp -> insts.lisp
6750 ** byte-comp.lisp -> target-byte-comp.lisp
6751 ** host-byte-comp.lisp -> byte-comp.lisp
6752 ** host-signal.lisp -> signal.lisp
6753 ** host-defstruct.lisp -> defstruct.lisp
6754 ** late-target-type.lisp -> deftypes-for-target.lisp
6755 Furthermore, several other previously target-only files foo.lisp (e.g.
6756 hash-table.lisp and random.lisp) have been split into a target-and-host
6757 foo.lisp file and a target-only target-foo.lisp file, with their key type
6758 definitions in the target-and-host part, so that the cross-compiler will
6759 know more about target types.
6760 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6761 gone away. In their place are various *BACKEND-FOO* variables
6762 corresponding to the slots of the old structure.
6763 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6764 into the target SBCL has been fixed.
6765 * The chill.lisp system for loading cold code into a running SBCL
6767 * Support for the CMU CL "scavenger hook" extension has been removed.
6768 (It was undocumented and unused in the CMU CL sources that SBCL was
6769 derived from, and stale in sbcl-0.6.1.)
6770 * Various errors in the cross-compiler type system were detected
6771 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6772 (enabling various consistency checks). Many of them were fixed,
6773 but some hard problems remain, so the compiler is back to
6774 running without *TYPE-SYSTEM-INITIALIZED* for now.
6775 * As part of the cross-compiler type system cleanup, I implemented
6776 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6777 * I have started adding UNCROSS calls throughout the type system
6778 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6779 on cross-compiler input files will be able to go away, and various
6781 * CONSTANTP now returns true for quoted forms (as explicitly required
6784 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6786 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6787 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6788 (MAKE-LIST -1). In the longer term, it ought to become true
6789 that declarations are assertions even at SAFETY 1. For now, it's not
6790 quite true even at SAFETY 3, but it's at least more nearly true..
6791 (Note that this change seems to increases the size of the system by
6792 O(5%) and to decrease the speed of the compiler by 20% or more.)
6793 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6794 for the problem of printing dozens of lines of distracting information
6795 about low-level system machinery as part of the top stack frame
6796 on entry to the debugger when an undefined function was called.
6797 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6798 is not reset to COMMON-LISP-USER.
6799 * Compilation of stuff related to dyncount.lisp has been made conditional
6800 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6801 smaller. The various dyncount-related symbols have been moved into
6802 a new "SB-DYNCOUNT" package.
6803 * tty-inspect.lisp has been renamed to inspect.lisp.
6804 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6805 feature has gone away. (When we eventually port to other flavors of
6806 libc and/or Unix, we'll try to make the differences between flavors
6807 invisible at the user level.)
6808 * Various other *FEATURES* tags, and/or their associated conditionals,
6809 have been removed if obsolescent, or given better documentation, or
6810 sometimes given more-mnemonic names.
6812 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6814 * tidied up "make.sh" script
6815 * tidied up system directory structure
6816 * better "clean.sh" behavior
6817 * added doc/FOR-CMUCL-DEVELOPERS
6818 * many many small tweaks to output format, e.g. removing possibly-confusing
6819 trailing #\. character in DESCRIBE-INSTANCE
6820 * (EQUALP #\A 'A) no longer signals an error.
6821 * new hashing code, including EQUALP hashing
6822 * tidied up Lisp initialization and toplevel
6823 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6824 * command line argument processing
6825 * added POSIX-GETENV function to deal with Unix-ish environment variables
6826 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6827 terminating SBCL on EOF
6828 * non-verbose GC by default
6829 * There is no more "sbcl" shell script; the sbcl file is now the C
6830 runtime executable (just like CMU CL).
6831 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6833 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6834 symbol and package information as Lisp native symbol and package objects
6835 instead of strings naming symbols and strings naming packages. This way,
6836 whenever packages are renamed (as in warm init), debug information is
6837 transformed along with everything else.
6838 * tweaked the optimization policy declarations which control the building
6839 of SBCL itself. Now, among other things, the system no longer saves
6840 source location debugging information. (This helps two problems at once
6841 by reducing SBCL size and by keeping SBCL from trying to look for its
6842 sources -- which may not exist -- when reporting errors.)
6843 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6844 debugging and testing purposes
6845 * cleaned up printing, making the printer call PRINT-OBJECT for
6846 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6847 methods, giving nearly-ANSI behavior
6848 * converted almost all special variables to use *FOO* naming convention
6849 * deleted PARSE-TIME functionality, since it can be done portably
6850 * moved some files out of cold init into warm init
6851 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6853 * regularized formatting of source files
6854 * added an install.sh script
6855 * fixed ridiculous memory usage of cross-compiler by making
6856 compiler/alloc.lisp not try to do pooling unless it can hook
6857 itself into the GC of the cross-compilation host. Now the system
6858 builds nicely on my old laptop.
6859 * added :SB-ALLOC in target-features.lisp-expr
6860 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6861 was not implemented)
6862 * re-did condition handling and note reporting in the compiler. Notes
6863 are no longer handled by signalling conditions. Style warnings
6864 and warnings are handled more correctly and reported in such a way
6865 that it's easy to find one or the other in your output (so that you
6866 can e.g. figure out which of many problems caused COMPILE-FILE to
6868 * changed the severity of several compiler warnings from full WARNING
6869 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6870 compiler note reporting so that it doesn't use the condition system
6871 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6872 COMPILE-FILE command)
6873 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6874 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6875 no longer supported, since their implementation was deeply intertwingled
6876 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6877 * removed bogus "support" for compiler macros named (SETF FOO), and
6878 removed the compiler macro for SETF INFO (but only after making a fool
6879 of myself on the cmucl-imp mailing list by posting a bogus patch for
6880 DEFINE-COMPILER-MACRO..)
6881 * Compiled files containing forms which have side effects on the Lisp
6882 reader (such as DEFPACKAGE forms) are now handled more correctly.
6883 (Compiler queuing of top level lambdas has been suppressed by setting
6884 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6885 * deleted various currently-unused source files, e.g. gengc.lisp. They
6886 may be added back at some point e.g. when porting to other architectures,
6887 but until they are it's distracting to distribute them and to try to
6889 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6890 there were so many of them they're just distractions, and UNCROSS is
6891 known to be able to handle the current sources
6892 * moved PROFILE functionality into TRACE, so that it will be clear
6893 how the wrapping and unwrapping of functions when you profile them
6894 interacts with the wrapping and unwrapping of functions when you
6895 trace them. (Actually, the functionality isn't there yet, but at least
6896 the interface specification is there. Hopefully, the functionality will
6897 arrive with some future maintenance release.)
6898 * removed host-oops.lisp
6899 * changed signature of QUIT function to allow UNIX-CODE argument
6900 * fixed READ-SEQUENCE bug
6901 * tweaked verbose GC output so that it looks more like the progress
6902 output that ANSI specifies for functions like LOAD
6903 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6904 * added <http://sbcl.sourceforge.com> to the banner information printed by