1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.1.7:
3 * enhancement: RUN-PROGRAM supports a :DIRECTORY argument to set
4 the working directory of the spawned process.
5 (lp#791800) (patch by Matthias Benkard)
6 * enhancement: vectors can now be stack-allocated on PPC.
7 * enhancement: "fixed objects" can now be stack-allocated on PPC.
8 * enhancement: WITH-PINNED-OBJECTS no longer conses on PPC/GENCGC.
9 * enhancement: (sb-introspect:find-definition-sources-by-name x :vop) now
10 also returns VOPs which do not translate any functions, and finds
11 defoptimizer types ir2convert and stack-allocate-result.
12 * enhancement: better type derivation for APPEND, NCONC, LIST.
14 * bug fix: type derivation for LOG{AND,IOR,XOR} scales linearly instead
15 of quadratically with the size of the input in the worst case.
17 * bug fix: handle errors when initializing *default-pathname-defaults*,
18 sb-ext:*runtime-pathname*, sb-ext:*posix-argv* on startup, like character
19 decoding errors, or directories being deleted.
20 * bug fix: Loading a core with a discontiguous dynamic space now correctly
21 computes the amount of dynamic space used.
22 * bug fix: disassembler missing ",8" on SHLD
23 * optimization: faster ISQRT on fixnums and small bignums
24 * optimization: faster and smaller INTEGER-LENGTH on fixnums on x86-64.
25 * optimization: On x86-64, the number of multi-byte NOP instructions used
26 for code alignment is now always minimal.
27 * optimization: On 64-bit targets, the compiler generates much faster
28 code for type checks for types known at compile time that are smaller
29 than (SIGNED-BYTE 64) or (UNSIGNED-BYTE 64) and larger than FIXNUM, and
30 their COMPLEX variants.
31 * optimization: On x86 targets, more uses of ALIEN-FUNCALL during cross
32 compilation now inline the INVOKE-WITH-SAVED-FP-AND-PC dance.
34 changes in sbcl-1.1.7 relative to sbcl-1.1.6:
35 * enhancement: TRACE :PRINT-ALL handles multiple-valued forms.
37 * bug fix: :allocation slot option works for condition slots
39 * bug fix: redefining conditions does not lead to multiple evaluations of
40 hairy slot initfunctions anymore (lp#1164969)
41 * bug fix: CLASS-DIRECT-DEFAULT-INITARGS now works for condition classes
43 * bug fix: function constants now work as initforms and default initarg
44 values of conditions (lp#539517)
45 * bug fix: svref/(setf svref) on symbol macros don't crash the compiler
46 anymore. (Minimal test case provided by James M. Lawrence on sbcl-devel)
47 * bug fix: no more bogus ## references when pretty printing backquoted
48 forms with non-trivial structure sharing. (lp#1161218)
49 * bug fix: Don't signal an error on (setf (documentation nil 'function)
50 "doc"). Signal a style-warning instead when trying to set documentation
51 of NIL for all other documentation types. (Reported by Zach
52 Beane; regression since 2e52fa05.)
53 * bug fix: modular arithmetic involving large constants and conditionals
54 should no longer result in spurious dead code elimination. (Reported by
56 * bug fix: our mach exception handler can seemingly called very early in
57 the program execution process on OS X 10.8.0. Try and handle that case
58 robustly, without potentially leaking mach ports too much.
59 * optimization: LOGBITP and LOGTEST optimizations from x86 ported to x86_64.
61 changes in sbcl-1.1.6 relative to sbcl-1.1.5:
62 * enhancement: the continuable error when defknown-ing over extant
63 fndb entries can be ignored by passing :overwrite-fndb-silently t
64 as a keyword argument to sb-c:defknown (after attributes). Useful
65 to allow defknown to be re-loaded. Use with :allow-other-keys t
66 for backward compatibility.
67 * optimization: compiler is much faster in compiling SVREF and (SETF SVREF)
69 * bug fix: Prevent a make-array transform from modifying source forms
70 causing problems for inlined code. Thanks to Bart Botta.
71 (regression since 1.0.42.11-bis)
72 * bug fix: clear-output calls the correct gray stream routine,
73 sb-gray:stream-clear-output. (lp#1153257)
74 * bug fix: an error is signalled for an invalid format modifier: ~<~@>.
76 * bug fix: Better error messages for package operations (lp#1154776)
77 * bug fix: delete-package on a nonexistent package should signal a cerror.
78 (regression since 1.0.37.44).
79 * bug fix: accessing &MORE (stack allocated &REST) arguments checks bounds.
80 (lp#1154946, lp#1072112)
81 * bug fix: compiling make-array no longer signals an error when the
82 element-type is an uknown type, a warning is issued instead.
83 Thanks to James Kalenius (lp#1156095)
84 * bug fix: SEARCH on generic (non-VECTOR non-LIST) sequence types no longer
85 produces wrong results for some inputs. (Thanks to Jan Moringen.)
88 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
89 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
91 * new feature: package local nicknames. See manual for details.
92 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
93 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
94 * enhancement: easier to use restarts for resolving name-conflicts
95 resulting from IMPORT, EXPORT, or USE-PACKAGE.
96 * enhancement: variant DEFPACKAGE forms now signal a full error with
97 restarts provided for resolving the situation. (lp#891351)
98 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
99 DEFPACKAGE forms can now signal a full error with restarts provided for
100 resolving the situation. See manual for details. (lp#891351)
101 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
102 (Thanks to Anton Kovalenko.) (lp#1102748)
103 * enhancement: backtrace improvements
104 ** secondary CLOS dispatch functions have better debug names (lp#503081)
105 ** easier to read method names in backtraces. See
106 SB-DEBUG:*METHOD-FRAME-STYLE*.
107 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
108 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
109 SB-DEBUG:BACKTRACE-AS-LIST.
110 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
111 information is available in less intrusive form as frame annotations.
112 * enhancement: SB-POSIX now provides MAP-ANON.
113 * enhancement: test-suite results are colorized, failures in red, unexpected
114 success in green. Works on Windows and on terminals with ANSI escape code
115 support. Can be disabled with --no-color.
116 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
117 (thanks to James M. Lawrence)
118 * bug fix: no more unused variable style warnings from RESTART-CASE
119 macroexpansion (lp#1113859)
120 * bug fix: no more unused variable style warnings when loading
121 sb-bsd-sockets.asd (lp#1114681)
122 * bug fix: deleting a package removes it from implementation-package
123 lists of other packages.
124 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
125 This does not fix the occasional "interrupt already pending" issue, though.
126 * bug fix: (setf (documentation 'x 'function)) and
127 (setf (documentation #'x t)) set documentation in different places.
128 (regression since 1.0.43.63)
129 * bug fix: build on newer glibc. (lp#1095036)
131 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
132 * optimization: LOOP expressions using "of-type character" have slightly
133 more efficient expansions.
134 * bug fix: very long (or infinite) constant lists in DOLIST do not result
135 in very long compile times or heap exhaustion anymore. (lp#1095488)
136 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
137 * bug fix: adjust-array ignored :initial-element for simple-vectors.
139 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
140 longer cause infinite loops (on circular data) or violate eqlity
141 constraints. (lp#1099708)
142 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
144 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
145 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
147 * enhancement: support for C-c to interrupt the foreground thread
148 on Windows. (Thanks to Anton Kovalenko.)
149 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
150 * enhancement: Safepoint builds on POSIX platforms can now optionally be
151 built without pseudo-atomic sequences and their run-time overhead.
152 * enhancement: Threads created outside of Lisp can enter Lisp through
153 alien callbacks and appear as Lisp threads for the duration of that
154 function invocation. On safepoint builds only.
155 * enhancement: Miscellaneous improvements to namestrings and underlying
156 calls to OS functions for file system access on Windows. (Thanks to
158 * enhancement: The MSI installer support for Windows now uses Windows
159 Installer XML at least version 3.5 and includes various usability
160 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
161 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
162 on Windows. (Thanks to Anton Kovalenko.)
163 * enhancement: The Windows backend now supports the x86-64 platform.
164 (Thanks to Anton Kovalenko.)
165 * bug fix: fasls are now once again directly executable (on platforms
166 supporting shebang lines, with a suitably-installed sbcl).
167 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
168 * bug fix: Fix CAS access to slots of direct instances of structure classes
169 in the presence of subclasses sharing the same conc-name.
170 * bug fix: Logical pathname namestrings on Windows have been changed to
171 be lower-case, to minimize differences between POSIX and Windows.
173 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
174 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
175 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
176 (NT 5.0) is no longer being maintained.
177 * notice: Starting with this version, SBCL on Windows no longer supports
178 building with disabled thread support.
179 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
180 * enhancement: New feature sb-dynamic-core allows the runtime to be
181 rebuilt or relocated without requiring changes to the core file on
182 all linkage table platforms. Required on Windows. (Thanks to Anton
184 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
185 * enhancement: I/O on Windows unnamed pipes is interruptible
186 asynchronously using interrupt-thread, timers when running on Windows NT
187 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
189 * enhancement: Support for the experimental safepoint-based stop-the-world
190 protocol on the PowerPC platform.
191 * bug fix: Non-blocking reads from the Windows console were not necessarily
192 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
193 * bug fix: stability of threads on Windows has been improved upon through
194 an updated stop-the-world protocol (thanks to Anton Kovalenko).
196 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
197 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
198 (COMPILE and COMPILE-FILE still do.)
199 * optimization: the SPARC backend now supports the precise generational
200 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
201 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
202 * enhancement: add experimental support for the SB-THREAD feature and the
203 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
204 Threads are enabled by default, and this version of SBCL is considered
205 to be the last and final release to officially support building with
207 * optimization: The compiler no longer rotates loops in some cases where
208 this transformation actually lead to worse code being generated.
209 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
210 symbol-macros by lexical bindings.
211 * bug fix: stack allocation was prevented by high DEBUG declaration in
213 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
214 (thanks to SANO Masatoshi)
215 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
216 :JUNK-ALLOWED was true.
217 * bug fix: type derivation inferred overly conservative types for
218 unions of array types. (lp#1050768)
220 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
221 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
222 source annotation of DISASSEMBLE output. Defaults to T.
223 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
224 WAIT-P argument added to WITH-RECURSIVE-LOCK.
225 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
227 * enhancement: Optional features (not enabled by default) allow the
228 use of signals for inter-thread synchronization to be reduced on certain
229 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
230 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
231 to test these experimental features. Known remaining bugs include minor
232 thread safety issues, less timely freeing of memory by GC, and certain
233 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
234 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
235 comparisons, particularly on almost-sorted inputs.
236 * bug fix: Reading floats with large exponents no longer takes too much time
237 before reporting that the exponent is too large.
238 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
239 correctly when the received datagram is larger than the provided buffer.
240 (lp#1023438, thanks to Robert Uhl)
241 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
242 a SYMBOL-VALUE form with a constant symbol argument.
243 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
244 into a DEFCAS defined place was used as the place.
245 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
246 for from bit-vectors.
247 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
248 lead to internal errors or crashes (lp#1058799).
249 * documentation: a section on random number generation has been added to the
252 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
253 * enhancement: implicit generic function warnings now specify the package
254 in which the new generic function is being created.
255 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
256 updates of CAS-able places (similar to Clojure's swap!).
257 * enhancement: run-program no longer decodes and re-encodes environment when
258 :environment argument is not provided. (lp#985904)
259 * enhancement: errors during compiler-macro expansion no longer cause
260 runtime errors, only a compile-time warning, otherwise behaving as if
261 the compiler macro had declined to expand.
262 * optimization: On x86-64, code alignment of block headers is done with
263 multi-byte NOPs now instead of repetitions of the single-byte NOP.
264 * optimization: MAP-INTO is substantially faster when the target sequence is
265 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
266 thanks to James M. Lawrence)
267 * optimization: the compiler no longer heap-conses to check exits in cases
268 where the exit function is dynamic extent, or when it can prove the exit
269 function cannot escape. (lp#1002534)
270 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
271 element type, and vectors that aren't SIMPLE-ARRAYs.
272 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
273 speed (around 1/3 the time in some cases), and a little better in terms of
274 comparison calls. (Thanks to Takeru Ohta)
275 * bug fix: On SPARC, a limitation on the number of code constants emittable
276 by the compiler has been lifted, allowing certain long functions to
277 compiled and assembled which had previously been unsupported; fixes
278 cl-bench on this ISA (lp#1008996).
279 * bug fix: potential for infinite recursion during compilation of CLOS slot
280 typechecks when dependency graph had loops. (lp#1001799)
281 * bug fix: error forms reported with some program-errors were not escaped
283 * bug fix: functions from EVAL are now on more equal footing with functions
284 from COMPILE. (lp#1000783, lp#851170, lp#922408)
285 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
286 objects as its :METHOD-COMBINATION argument, not just lists designating
287 method combinations. (lp#936513)
288 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
290 * bug fix: restore build on solaris/sparc. (lp#1008506)
291 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
292 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
293 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
294 as keyword arguments no longer accidentally match unevaluated symbols
296 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
297 parameter was zero, now it signals an error. (lp#905817, fixed since
299 * bug fix: run-program with :pty t no longer makes the pty as the process's
301 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
304 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
305 * RANDOM enhancements and bug fixes:
306 ** bug fix: the range and distribution of random integers could be
307 catastrophically wrong when the compiler derived the type of its
308 argument as a disjoint set of small integers.
309 ** bug fix: the distribution of random integers is now completely
310 uniform even when the specified limit is not a power of two.
311 (Previously some values could be about 0.1 % more probable than
312 others in the worst case.) (lp#309467)
313 ** RANDOM on large integer arguments is generally faster and conses
314 less than before; this is visible for fixnums above a length of
315 about 24 bits, but extremely so for bignums: the old implementation
316 used time and space quadratical in the size of the argument there,
317 the new one is linear.
318 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
319 main entry point, SB-EXT:QUIT is deprecated.
320 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
321 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
322 * enhancement: FASL loading no longer grabs the world-lock.
323 * enhancement: GENCGC reclaims space more aggressively when objects being
324 allocated are a large fraction of the total available heap space.
326 * enhancement: backtraces show the correct number of arguments for frames
327 called with too many arguments.
328 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
330 * enhancement: ASDF has been updated 2.21.
331 * optimization: fewer uses of full calls to signed modular functions.
333 * optimization: typechecking alien values is typically 5 x faster.
334 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
336 * bug fix: file compilation performance issues when dumping subtypes
337 of CHARACTER (lp#994487)
338 * bug fix: fixed disassembly of some SSE instructions on x86-64.
339 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
340 OPEN. (lp#969352, thanks to Kambiz Darabi)
341 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
343 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
344 classoid even if X was not the proper name of the class. (lp#941102)
345 * bug fix: declaration leakage between lexical environments due to careless
346 use of NCONC in MAKE-LEXENV. (lp#924276)
347 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
348 *default-pathname-defaults* contains NAME or TYPE components.
349 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
350 from CL package, e.g. (loop . 10).
351 * bug fix: run-program with existent or non-existent files for :output or
352 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
353 returns NIL instead of signalling an obscure error.
354 * bug fix: fix miscompilation of some logand forms with large constant
355 arguments. (lp#974406)
356 * bug fix: account for funcallable-instance objects properly in ROOM.
357 * bug fix: incorrect octets reported for c-string decoding errors.
359 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
361 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
362 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
363 allowing faster release of memory back to the OS. (lp#991293)
364 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
365 existing deadline for the dynamic scope of its body.
366 * bug fix: compiler-internal interval arithmetic needed to be more
367 conservative about open intervals when operated on by monotonic but not
368 strictly-monotonic functions. (lp#975528)
369 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
370 it's also slightly faster. (lp#998926)
371 * bug fix: better error messages for malformed declarations.
373 * bug fix: define-condition didn't return the name of the defined condition.
375 ** improved docstrings: REPLACE (lp#965592)
377 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
378 * bug fix: fix copy-structure. When copying from stack to heap, garbage
379 could end up in the heap making GC unhappy.
380 (Thanks to James Knight, lp#911027)
382 ** SBCL can now be built using Clang.
383 ** ASDF has been updated 2.20.
384 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
385 * bug fix: don't complain about a too-hairy lexical environment for inlining
386 when the function has never been requested for inlining. (lp#963530)
388 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
389 * enhancements to building SBCL using make.sh:
390 ** --fancy can be specified to enable all supported feature enhancements.
391 ** --with-<feature> and --without-<feature> can be used to specify
392 which features to build with.
393 ** --arch option can be used to specify the architecture to build for.
394 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
395 full-blows cross-compilation.)
396 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
397 which allows specifying name of the default interning package for the
399 * enhancement: when *READ-EVAL* is true, arrays with element type other than
400 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
401 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
402 null alien when malloc() fails. (lp#891268)
403 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
404 conditions can be conveniently accessed through function with the same
405 name, analogously to CONTINUE.
406 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
407 from the printer by type, causing an error marker to be printed instead.
408 (Thanks to Attila Lendvai)
409 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
410 generally behave better when errors occur during printing.
411 * enhancement: the test runner now takes a --report-skipped-tests argument
412 to report the individual tests skipped as well as the number of skipped
414 * enhancement: undefined functions now appear in backtraces as ("undefined
415 function") instead of ("bogus stack frame") on x86oids.
416 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
417 deadlock errors are reported in an easier-to-decipher manner.
418 * enhancement: DESCRIBE on type designators reports the expansion in more
420 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
421 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
422 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
423 * enhancement: better disassembly of segment-prefixes on x86 and other
424 instruction prefixes (e.g. LOCK) on x86 and x86-64.
425 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
426 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
427 * optimization: SUBSEQ on vectors of unknown element type is substantially
429 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
430 be stack-allocated. (lp#902351)
431 * optimization: the compiler is smarter about representation selection for
432 floating point constants used in full calls.
433 * optimization: the compiler no longer refuses to coerce large fixnums to
434 single floats inline, except on x86 where this limitation is still
436 * optimization: truncation operations on integers with constant divisor
437 arguments 1 and -1 are optimized away.
438 * bug fix: deadlock detection could report the same deadlock twice, for
439 two different threads. Now a single deadlock is reported exactly once.
440 * bug fix: interval-arithmetic division during type derivation did not
441 account for signed zeros.
442 * bug fix: compiler error when typechecking a call to a function with
443 non-constant keyword arguments.
444 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
445 * bug fix: condition slot accessors no longer cause undefined function
446 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
447 form that defines them. (lp#896379)
448 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
450 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
451 bogusly report NIL, T.
452 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
453 required arguments ignored and performed assignments to others.
455 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
456 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
457 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
458 * bug fix: redefining a function whose previous definition contained an
459 unknown type no longer causes a style-warning. (lp#806243)
460 * bug fix: undefined functions now appear in backtraces as ("undefined
461 function") instead of ("bogus stack frame") on non-x86oids.
462 * bug fix: backtraces are no longer cut off at ("undefined function") when
463 called under certain circumstances (involving a caller-allocated stack
465 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
466 systems. (regression since 1.0.53)
467 * bug fix: GC deadlocks from dladdr() on certain platforms.
468 * bug fix: broken standard streams no longer automatically cause recursive
469 errors on debugger entry.
470 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
471 (regression since 1.0.53)
472 * bug fix: attempts to stack allocate a required argument to a function with
473 an external entry point caused compiler-errors.
474 * bug fix: compiler notes for failed stack allocation for a function argument
475 no longer claim to be unable to stack allocate the function.
476 * bug fix: COERCE now signals a type-error on several coercions to
477 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
478 * bug fix: missing failure-to-stack-allocate compiler notes for some
479 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
480 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
482 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
484 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
485 * minor incompatible changes:
486 ** RENAME-FILE on a symbolic links used to rename the linked-to file
488 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
489 directory, but now signal an error instead. Use TRUENAME to resolve the
490 pathname if you wish to delete the linked directory, and DELETE-FILE if
491 you wish to delete the
492 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
493 symbols associated with it will trigger a compile-time warning.
494 * thread-related enhancements:
495 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
496 Many thanks to generous donors!)
497 ** Threading is now more reliable on non-Linux platforms. We still don't
498 consider threads on non-Linux platforms good enough to enable them by
499 default, but they're in a clearly better shape now.
500 ** Deadlines supported now on all platforms.
501 ** All blocking functions in the threading API now have a :TIMEOUT
503 ** Semaphore notification objects have been added to SB-THREAD.
504 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
505 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
506 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
507 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
508 using an API anologous to defining new SETFable places.
509 * GC-related enhancements and bug fixes:
510 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
511 and Gb suffixes. Default is megabytes as before.
512 ** on GENCGC targets, the default dynamic space size is now 512Mb for
513 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
514 exception, defaulting to mere 444Mb to fit under default ulimits.) The
515 new defaults are in place to prevent hitting swap on low-end systems.
516 Use build-time option --dynamic-space-size to build an SBCL with
517 another default, or the runtime option to adjust the size at startup: a
518 good size is at most equal to the amount of physical memory the system
520 ** on GENCGC targets, nursery and generation sizes now default to 5% of
522 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
523 refuses to create SIMPLE-FUN objects.
524 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
526 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
527 validation of pointer objects as GENCGC does, instead of a
528 comparatively weak bounds-check against the heap spaces.
529 * SB-BSD-SOCKETS bug fixes:
530 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
531 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
532 systems with getaddrinfo().
533 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
534 safe outside systems with getaddrinfo().
535 * enhancement: ASDF has been updated 2.019.
536 * enhancement: special-case TCO prevention for functions which never return
537 extended to untrusted types, keeping one more frame's worth of debug
538 information around in many cases.
539 * enhancement: debug-names of anonymous and local function are more
540 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
541 * enhancement: on win32, ABS of complex floats guards better against
542 overflows. (lp#888410)
543 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
544 process exiting with code 1. (lp#676987)
545 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
546 the system where on the filesystem the SBCL sources themselves are
547 located. (Thanks to Zach Beane)
548 * enhancement: the compiler is now able to derive tighter bounds for
549 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
550 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
551 correctly, even on wide-fixnum builds. (lp#887220)
552 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
553 resolved to directories.
554 * bug fix: type mismatch when assigning to lexical variables no longer
555 result in fasl-dumping internal type objects. (lp#890750)
556 * bug fix: type mismatch on (SETF AREF) and function return values no
557 longer result in fasl-dumping internal type objects.
558 * bug fix: With several combinations of argument types, for example (EXPT
559 <integer> <(complex double)>), EXPT now uses double-precision throughout
560 instead of partially calculating only to single-precision. (lp#741564;
561 thanks to Lutz Euler)
562 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
563 objects when interrupted by GC on PPC.
565 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
566 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
567 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
568 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
569 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
570 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
571 targets is now 63 bits (up from 61).
572 * enhancement: DESCRIBE now reports a lambda-list and source location
573 for complext setf-expanders.
574 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
575 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
576 of multiple-valued places to be set to NIL, instead of signalling an
577 error (per a careful reading of CLHS 5.1.2.3).
578 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
579 * bug fix: repair crash in x86oid darwin signal handling emulation
580 when built with certain compilers.
581 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
582 rotation arguments on x86-64. (lp#882151)
583 * bug fix: low-level control flow optimisations could result in bogus
584 code in functions with tail and non-tail calls to local functions on
586 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
587 to emit literal characters > (code-char 4095), for comparisons with
589 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
590 on 64 bit platforms. (lp#881445)
591 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
592 delete the wrong file when using relative pathnames. (lp#882877)
593 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
594 sequences and :KEY NIL.
596 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
597 * enhancement: ASDF has been updated to version 2.017.
598 * enhancement: the --core command line option now accepts binaries with
600 * enhancement: when built with :sb-core-compression, core files (regular
601 or executable) can be compressed with zlib. Use the :COMPRESSION
602 argument to SAVE-LISP-AND-DIE to specify a compression level.
603 * enhancement: --[no-]merge-core-pages determines whether the runtime
604 hints the operating system that identical core pages between SBCL
605 processes should share the same physical memory. Default is to only
606 enable this for compressed cores.
607 * optimization: SLEEP no longer conses.
608 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
609 or bit-vectors when using the standard pretty-print dispatch table.
610 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
612 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
613 AREF, CHAR, etc. (lp#826971)
614 * bug fix: compiler-errors causes by integer arguments with composed of
615 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
616 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
617 expressions. (lp#770184)
618 * bug fix: complex single float literals are correctly aligned when used
619 as arguments of arithmetic operators.
620 * bug fix: on 32-bit platforms, rounding of double floats larger than a
621 fixnum is correct. (reported by Peter Keller)
622 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
623 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
625 * bug fix: redefining classes such that slots with custom allocation are
626 added or removed works again.
628 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
629 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
630 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
631 MAKE-SOCKET-STREAM if using SERVE-EVENT.
632 * enhancement: added support for socket keepalive timeout intervals
633 and probe counts on Linux.
634 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
635 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
636 * enhancement: added new toplevel options --quit and --non-interactive
638 * enhancement: the Windows port of SBCL now builds and runs on Wine
639 (thanks to Anton Kovalenko).
640 * enhancement: more, and more correct, SSE instruction definitions on
641 x86-64 (thanks to Alexander Gavrilov).
642 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
643 to help the processor execute spin loops, when applicable. Currently
644 implemented for x86 and x86-64.
645 * optimization: unsigned integer divisions by a constant are implemented
646 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
647 * optimization: improved type-derivation for LOAD-TIME-VALUE.
648 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
649 instructions. (lp#814688)
650 * bug fix: COERCE to unfinalized extended sequence classes now works.
651 (reported by Jan Moringen; lp#815155)
652 * bug fix: a compiler error during typecheck generation, reported by Eric
654 * bug fix: obsolete instance protocol fires when shared slots are added
656 * bug fix: fixed-format floating point printing with scaling factors.
658 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
659 backtraces. (lp#818460)
660 * bug fix: better backtraces for interrupted syscall frames on x86.
662 * bug fix: SSE comparison instructions can be disassembled even when one
663 operand is in memory. (lp#814702)
664 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
665 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
666 type information associated with the VALUES form.
667 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
669 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
670 first write (lp#561642).
671 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
672 * bug fix: bound propagation involving conversion of large bignums to
673 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
675 * bug fix: &REST to &MORE conversion still works in unsafe call to known
676 functions; reported by Lutz Euler (lp#826459).
677 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
680 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
681 * enhancement: errors from FD handlers now provide a restart to remove
682 the offending handler.
683 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
685 * enhancement: location of user or system initialization file can now easily
686 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
687 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
688 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
689 the thunk, as a keyword argument, :arguments.
690 * enhancement: constraint propagation is simplified (and sped up) when
691 COMPILATION-SPEED > SPEED.
692 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
693 * enhancement: debugger understands &MORE arguments better.
694 * optimization: extracting bits of a single-float on x86-64 has been
695 optimized. (lp#555201)
696 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
697 when (> SPEED SPACE).
698 * optimization: local call trampolines (x86 and x86-64) are emitted
700 * optimization: implicit value cells for dynamic-extent closed-over bindings
701 on x86 and x86-64 can hold unboxed values as well.
702 * meta-optimization: improved compilation speed, especially for large
703 functions. (lp#792363 and lp#394206)
704 * bug fix: bound derivation for floating point operations is now more
705 careful about rounding possibly closing open bounds. (lp#793771)
706 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
707 backwards incompatible change in 1.0.48.27)
708 * bug fix: occasional debugger errors in when a type-error occured in a
709 function with dynamic-extent &rest list.
710 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
711 boa-construtors can be used to initialized structure slots.
712 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
713 (lp#795705, regression)
714 * bug fix: DIRECTORY works better on logical pathnames.
715 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
716 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
717 * bug fix: the compiler no longer constant-folds NaNs in
718 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
719 * bug fix: FORMAT now handles floating point rounding correct, eg.
720 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
722 * bug fix: style warning during lambda-list introspection of generic
723 functions with both optional and key argments.
724 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
726 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
729 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
730 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
731 interrupts for its body.
732 * enhancement: source locations are now available for files loaded as
733 source, compile-time-too evaluation, and initialization files.
734 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
735 virtual source-file information, eg. overriding input-file of COMPILE-FILE
736 when a temporary file is used for compilation.
737 * enhancement: ASDF has been updated to version 2.015.3.
738 * enhancement: backtraces involving frames from the default evaluator are
740 * enhancement: RUN-PROGRAM works with user-defined binary input and output
742 * enhancement: more informative compile-time warnings and runtime errors for
743 type-errors detected at compile-time.
744 * enhancement: deadlock detection for mutexes and spinlocks.
745 * enhancement: dynamic-extent for &rest lists stack allocate only their
746 spines, not their argumets. While portable code should not rely on this,
747 particularly in combination with inlining, it should make dynamic-extent
748 easier to use safely.
749 * enhancement: SB-POSIX improvements:
750 ** WNOHANG and WUNTRACED are exported.
751 ** SYSCALL-ERROR now also provides the name of the failing system call.
752 * enhancement: --script improvements:
753 ** errors on standard input, output, and error streams are handled and
754 cause scripts to exit silently, making them easier to use in shell
756 ** backtraces from scripts now go to standard error instead of the
757 terminal even if one is available.
758 ** --script can be an argument, causing the script to be loaded from
760 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
761 strings to foreign memory.
762 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
763 a file, making it easier to understand heap dynamics.
764 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
765 allows the compiler to automatically elide rest-list allocation so long as
766 the call sites are in functions that the compiler knows cannot escape.
768 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
769 especially in safe code when none of the required arguments have changed
771 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
772 uninterruptible, as well as blocking reads from socket streams created
773 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
774 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
775 from the to-char if the from-char is not a dispatch-macro character.
776 * bug fix: references to undefined variables in function calls that are
777 optimized away now signal a runtime error. (lp#722734)
778 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
779 types from a function defined in the same file. (regression from
781 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
783 * bug fix: spurious errors during QUIT when standard streams were closed.
785 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
786 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
787 years, is now no longer supported.
788 * enhancement: read() and write() have been added to SB-POSIX.
789 * enhancement: types of DEFSTRUCT constructors are proclaimed more
790 accurately, allowing better typechecking of call-sites.
791 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
792 are no longer caught. (reverted to pre 1.0.34 behaviour)
793 * optimization: slightly faster ISQRT. (lp#713343)
794 * bug fix: better support for Solaris /bin/sh in sh-based tests.
795 * bug fix: TRACE behaves better when attempting to trace undefined
796 functions. (lp#740717)
797 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
798 to (FUNCALL #'(LAMBDA ...) ...).
799 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
800 a compile-time error. (lp#720382)
801 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
803 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
804 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
805 optimization. (regression from 1.0.45.18/1.0.46.15)
806 * bug fix: package locks did not protects against compile-time side-effects
807 of DEFUN. (lp#675584)
808 * bug fix: --dynamic-space-size argument is validated more carefully.
810 * bug fix: memory fault from printing a malformed simple-condition.
812 * bug fix: redefining classes so that slot-definition classes change now
813 engages the obsolete instance protocol. (lp#766271)
814 * bug fix: constant improper lists could break source coverage recording.
816 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
819 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
820 * bug fix: fix mach port rights leaks in mach exception handling code on
821 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
823 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
824 * enhancement: redefinition warnings for macros from different files. (lp#434657)
825 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
826 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
827 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
828 processed using EVAL -- now the appropriate toplevel form is reported instead.
829 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
830 declarations. (lp#726331)
831 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
832 that NIL/NULL is excluded from the type.
833 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
835 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
837 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
838 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
839 stack-allocated values out of their dynamic-extent. (lp#310175)
840 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
841 x86-64 builds caused a type-error.
842 * bug fix: calling COMPILE with something else than a lambda-expression as the
843 second argument reports a more sensible error. (lp#718905)
844 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
845 are detected. (lp#520607)
846 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
848 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
849 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
850 methods. (regression from 1.0.45.18)
851 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
852 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
853 * bug fix: several foreign functions accepting string also accepted NIL and
854 consequently caused a memory fault at 0 now signal a type-error instead.
856 * bug fix: under rare circumstances, constraint propagation could rewrite a
857 variable reference to refer to a variable not in scope, causing an error
858 during physical environment analysis when attempting to close over the
859 variable. (lp#551227)
860 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
862 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
863 * enhancement: largefile support on Solaris.
864 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
865 arguments (lp#710017)
866 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
867 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
869 * optimization: ERROR and CERROR are approximately 5 times faster.
870 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
871 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
872 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
873 up instance creation in those cases.
874 * optimization: arithmetic operations with multiple constant arguments in now
875 have them reduced at compile-time. (lp#676414)
876 * optimization: determining current character position on string-streams for
877 pretty-printing was overly slow.
878 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
879 lifetime analysis to overwrite closed-over variables (lp#681092).
880 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
881 were not handled correctly (lp#713063).
882 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
884 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
885 mistake. (lp#667297).
886 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
887 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
888 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
889 unintern the wrong symbol with the same name. (lp#693796)
890 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
891 making it possible to restore the initial table if it has been messed up.
894 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
895 * enhancement: ~/ and ~user/ are treated specially in pathnames.
896 Refer to documentation for details.
897 * enhancement: ASDF has been updated to version 2.010.
898 * optimization: mutated closed-over variables that are only accessed by
899 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
900 declared to be DYNAMIC-EXTENT) are stored directly in their containing
901 stack frame, rather than allocating a VALUE-CELL (lp#586103).
902 * optimization: UNWIND-PROTECT cleanup functions are now declared
904 * bug fix: backtracing function with &REST arguments now shows the full
905 argument list. (lp#310173)
906 * bug fix: return types for functions with complex lambda-lists are now
907 derived properly (lp#384892)
908 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
909 long string arguments slowed the compiler down to a crawl.
910 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
911 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
912 in the DEFMETHOD body.
913 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
914 messages, being instead replaced with the corresponding function name.
915 * bug fix: don't derive overly complex unions of numeric types for arithmetic
916 operators. (lp#309448)
918 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
919 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
920 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
921 * enhancement: ALLOCATION-INFORMATION also provides the page the object
923 * enhancement: default dynamic-space size can be configured at build-time
924 without touching source, using the --dynamic-space-size argument to make.sh.
925 * enhancement: DESCRIBE recognizes symbols naming optimization policy
926 qualities, and mentions ALWAYS-BOUND declarations.
927 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
929 * enhancement: ASDF has been updated to 2.009.
930 * enhancement: the system detects known type-erros in calls better,
931 signalling a full warning about violated proclaimed FTYPEs and violations
932 of derived FTYPEs within the same file, including self-calls.
933 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
934 * optimization: constant-folding exploits numeric and character types, in
935 addition member types.
936 * optimization: numeric, character and member types that are inhabited by
937 exactly one value are tested with EQL.
938 * optimization: more conditional branches are eliminated during IR1.
939 Branches are simplified before performing if/if-conversion, and simple
940 equivalent branches (that only read the same constant or variable) are
942 * improvements to the Windows port:
943 ** change: canonical unparsing form for pathname namestrings now uses / as
944 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
945 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
946 on Windows. (thanks to Kalyanov Dmitry)
947 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
949 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
950 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
951 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
952 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
954 * bug fix: interrupts arriving during CL:OPEN caused an error.
955 * bug fix: overeager character buffering could cause input to block
956 spuriously when reading from a pipe (lp#643686)
957 * bug fix: more efficient timer expiry should avoid starvation on systems
958 where number of SIGALRMs per second is restricted. (lp#375515)
959 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
960 * bug fix: compile-times no longer scale linearly with the size of
961 quoted lists in source-code. (lp#654289)
962 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
963 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
964 so badly. (lp#654485)
965 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
966 an error for eg. STRUCTURE. (lp#458015)
967 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
968 (lp#613871, thanks to Roman Marynchak)
969 * bug fix: more reliable &REST list type derivation. (lp#655203)
970 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
971 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
972 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
973 also declared NOTINLINE. (lp#655581)
974 * bug fix: the compiler could attempt to emit constant left shifts of
975 greater value than n-word-bits. (lp#309063)
976 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
977 type information for the function being set. (lp#659220)
978 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
979 containing self-calls were recompiled with a new signature, and failed
980 to warn when a self-call using the old signature was left in. (lp#655126)
981 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
982 :DEFAULT when the default external had character size other than 8 bits.
984 * bug fix: derived types of functions in the same file were implicitly
985 trusted, leading to potential heap corruption when those function were
986 defined incompatibly. (lp#657499)
987 * bug fix: existing ASDF source registries are ignored when building
989 * bug fix: short-form DEFSETF checks that the second argument is a symbol
990 (lp#655824, thanks to Roman Marynchak)
991 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
992 package-lock violation was detected. (lp#660752)
993 * bug fix: the system can store different docstrings for a single function
994 under different names. (lp#661631, regression from 1.0.29.24)
995 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
996 properly. (lp#384801)
997 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
998 of specified length could confuse the type derivation in unsafe code.
1000 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
1001 fork with multiple Lisp threads running is made on every platform,
1002 not just Darwin. (lp#451111)
1003 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
1004 around when core was saved, which could cause undefined behaviour when the
1006 * bug fix: Allow UNTRACE of functions that are no longer defined
1007 (lp#667657, thanks to Attila Lendvai)
1008 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
1009 compile-time warning (lp#664373, thanks to Stas Boukarev)
1011 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
1012 * incompatible change: FD-STREAMS no longer participate in the serve-event
1013 event-loop by default. (lp#316072)
1014 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
1015 affects streams from CL:OPEN.
1016 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
1017 default, but this is liable to change: applications needing serve-event
1018 for socket streams should explicitly request it using :SERVE-EVENTS T
1020 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
1022 * enhancement: CLOS effective method functions and defclass slot typechecking
1023 function now have debug names for use in backtraces and profiles.
1024 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
1026 * enhancement: symbols are printed using fully qualified names in several
1027 error and warning messages which are often associated with package
1028 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
1029 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
1030 thanks to Andrew Golding)
1031 * bug fix: reading /proc files on Linux works. (lp#425199)
1032 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
1034 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
1035 breaking code that tried to write the value of a printer control variable.
1036 (lp#581564, thanks to Stas Boukarev)
1037 * bug fix: WRITE compiler macro did not handle output stream designators
1038 correctly. (lp#598374, thanks to Stas Boukarev)
1039 * bug fix: better availability of names of foreign functions in backtraces
1040 on Linux. (lp#626962, thanks to Stas Boukarev)
1041 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
1042 lp#627581, thanks to Josh Elsasser and Jim Wise)
1043 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
1044 thanks to Josh Elsasser)
1045 * bug fix: using aliases for builtin classes as defmethod specializers
1046 without adding DEFTYPEs for them works. (lp#618387)
1047 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
1049 * bug fix: legally dynamic-extent lists and vectors used as
1050 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
1051 * bug fix: inline-expansion creating references to dead lambda-variables
1052 (lp#454681, thanks to Alexey Dejneka)
1053 * bug fix: better error message for bogus numerical arguments to RANDOM.
1054 (lp#598986, thanks to Stas Boukarev)
1055 * bug fix: the compiler occasionally inlined references from incompatible
1056 environments occurs. (lp#308951)
1057 * bug fix: the compiler threw an error when trying to compile a local
1058 function (labels or flet) known to take a specialized complex argument.
1059 (not in launchpad, reported by sykopomp in #lispgames)
1060 * bug fix: package-locks failed to protect against compile-time effects of
1061 DEFUN when the symbol previously had a macro definition. (lp#576637)
1062 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
1063 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
1064 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
1065 * bug fix: evaluation in debugger REPL works using the global context when
1066 in frames that do not have sufficient debug information.
1067 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
1069 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
1071 * bug fix: interrupt taking longer than the requested period caused SLEEP
1072 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1074 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1076 ** Cross-compilation host is now specified to make.sh using
1077 command-line argument --xc-host=<command> instead of a positional
1078 argument. (thanks to Daniel Herring)
1079 ** Install location can be specified to make.sh using command-line
1080 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1081 * optimization: The default implementation of
1082 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1083 * enhancement: Explicit memory barrier operations are now available for use
1084 by multithreaded code. See documentation for details.
1085 * enhancement: Experimental support for threading on Linux/PPC.
1086 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1087 * bug fix: EXPT signals an error if first argument is a zero and second
1088 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1089 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1090 (lp#576594, thanks to Roman Marynchak)
1091 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1092 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1094 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1095 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1096 cached, leading to many fewer expensive calls to
1097 COMPUTE-APPLICABLE-METHODS.
1098 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1099 CLASS argument, search for and call an appropriate optimized ctor function
1101 * bug fix: WRITE always returns the correct value.
1103 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1104 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1105 * bug fix: Name conflicts between symbols passed as arguments to a single
1106 call to IMPORT no longer add multiple symbols with the same name to the
1107 package (detectable via DO-SYMBOLS).
1108 * bug fix: support building without the dlshim on darwin x86 and x86-64
1110 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1112 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1113 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1115 * bug fix: linkage-table entries on PPC now no longer overflow their
1116 space allocation (potentially causing crashes if they are written out
1118 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1119 platforms, preventing the GC from seeing stale pointers on the control
1120 stack in subsequent GCs (which would, and does, break invariants).
1121 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1122 * bug fix: Literal characters with code points greater than about 32767
1123 now work on PPC UNICODE builds.
1124 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1125 high order bits are explicitly cleared out. In some contrived situations,
1126 this could lead to wrong results in mixed real/complex float arithmetic.
1127 * bug fix: Fix function/macro redefinition warnings when building with
1128 clisp. (lp#576787, thanks to Josh Elsasser)
1129 * new platform: experimental support for ppc/openbsd (thanks to Josh
1131 * bug fix: Floating-point traps now work on ppc/linux.
1133 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1134 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1135 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1136 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1137 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1138 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1139 SB-THREAD:GRAB-MUTEX.
1140 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1141 contain additional data structures and tools for concurrent programming;
1142 at the moment it contains a lock-free queue, and a lock-free mailbox
1144 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1145 GET-MUTEX but takes &key rather than &optional parameters. Also added
1146 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1148 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1149 SB-THREAD:WAIT-ON-SEMAPHORE.
1150 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1152 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1153 conditions to defer the deadline for forever.
1154 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1156 * enhancement: errors from NO-APPLICABLE-METHOD and
1157 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1158 generic function call.
1159 * enhancement: SB-BSD-SOCKET improvements
1160 ** sockets and socket streams now have a more informative printed
1161 representation based on the corresponding SOCKET-NAME and
1163 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1165 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1166 CL:CLOSE when appropriate, and no longer disassociates the stream
1167 from the socket if close failed. (lp#543951)
1168 * improvements to the instrumenting profiler
1169 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1170 ** optimization: counters no longer use locks for the overflow mode.
1171 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1172 incurred an off-by-one miscount.
1173 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1174 * enhancement: improved DEFMETHOD pretty-printing.
1175 * enhancement: perform range reduction when arguments are too large for
1176 x87's transcendentals (instead of returning 0). (lp#327192)
1177 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1178 some of CL-PPCRE's macros. (lp#570079)
1179 * enhancement: our machine code is slightly less hostile to valgrind on
1181 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1182 to Robert Swindells and Aleksej Saushev)
1183 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1184 * bug fix: a rare case of startup-time page table corruption.
1185 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1186 to timeouts could be left in an inconsistent state.
1187 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1188 * bug fix: misoptimization of multiplication by one in
1189 (SB-C::FLOAT-ACCURACY 0) policies.
1190 * bug fix: miscounts in SB-PROFILE.
1191 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1192 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1193 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1194 up itself" (March 2010) for further details.
1195 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1196 against length of the list if the element is found before the specified
1197 END is reached. (thanks to Alec Berryman, lp#554385)
1198 * bug fix: errors signalled during package graph modification no longer
1199 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1200 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1201 :SB-DOC feature. (lp#552564)
1202 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1203 * bug fix: more robust runtime executable path detection. (lp#375549)
1204 * bug fix: GCD always returns positive values. (lp#413680)
1205 * bug fix: Converting division to multiplication by reciprocal handles
1207 * bug fix: We were too eager in eliding range reduction tests on x87.
1208 The maximal magnitude is 2^63, not 2^64.
1209 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1211 * bug fix: Maybe restore buildability on Alpha.
1212 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1214 * bug fix: RANDOM-STATE can be printed readably again.
1215 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1216 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1217 types) could result in type mismatches during compilation.
1219 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1220 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1221 stack frame thrown from.
1222 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1223 compiler optimization qualities inside dynamic extent of its body.
1224 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1225 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1227 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1228 constraint propgation, allowing better compilation eg. when used to
1229 access structures with WITH-SLOTS. (lp#520366)
1230 * optimization: the compiler is now more aware of the type of the underlying
1231 storage vector for multidimensional simple arrays resulting in better code
1232 for accessing such arrays.
1233 * optimization: passing NIL as the environment argument to TYPEP no longer
1234 inhibits optimizing it. (lp#309788)
1235 * optimization: more efficient register usage when handling single-float
1236 arguments on x86-64. (thanks to Lutz Euler)
1237 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1238 pre-allocated temporary vectors. (lp#496249)
1239 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1240 in :INITIAL-CONTENTS. (lp#523612)
1241 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1242 functions. (lp#524707)
1243 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1244 WITH-SLOTS usages during compilation.
1245 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1246 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1247 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1248 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1249 instruction (tested on x86oid linux with ud2-breakpoints).
1250 * bug fix: slam.sh now works on win32.
1251 * bug fix: better differences of numeric types. (lp#309124)
1252 * bug fix: arrays declared intersection and union types can have their
1253 upgraded element type derived. (lp#316078)
1254 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
1255 threads started during profiling. (lp#472499)
1256 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
1258 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
1259 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
1260 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
1261 values instead of signaling an error. (lp#309093)
1262 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
1264 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
1265 declarations (lp#497321)
1266 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1267 and failed to detect circular lists (lp#452008)
1268 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1270 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1271 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1272 due to it, so that handlers can run.
1273 * bug fix: reparsing undefined types if they have become defined since
1274 parsing. (lp#309128)
1275 * bug fix: missing &REST type in a proclamation for a function with both
1276 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1277 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1278 expanded calls (lp#542174)
1279 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1280 than just at toplevel form.
1282 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1283 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1284 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1285 but work on type specifiers.
1286 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1287 to name a type specifier.
1288 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1289 specifier is valid where "valid" basically means "would be accepted as
1290 second argument of TYPEP".
1291 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1292 returns the function's declared, or derived FTYPE.
1293 * new feature: SB-POSIX now supports accessing the d_ino member of
1294 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1295 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1296 provide for seeding a RANDOM-STATE object with user-provided data or
1297 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1298 attempt to initialize the returned state from the operating system's
1299 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1300 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1301 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1302 * bug fix: Fix grammar and style issues for the docstrings of
1303 printer-related variables and functions. (Thanks to mon_key; launchpad
1305 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1307 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1308 in a row even though a handler defered the deadline long into the
1310 * bug fix: A deadline handler was run without interrupts enabled for a
1311 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1312 in infinitely spinning, non-killable threads.
1313 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1314 before reaching the erring stack frame.
1315 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1316 real power. (launchpad bug lp#525949)
1317 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1318 GENCGC platforms. (launchpad bug lp#529014)
1319 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1320 (launchpad bug lp#525916)
1321 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1322 (Thanks to Robert Goldman)
1324 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1325 * optimization: ROUND with a single single-float or double-float argument
1326 is properly inlined when possible.
1327 * optimization: Slightly better code is generated for integer<->float
1328 conversions and for single-float<->double-float conversions on x86-64.
1329 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1330 code for 32-bit and 64-bit rotations on x86-64.
1331 * bug fix: The install script changes the ownership of directories as well
1332 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1333 launchpad bug lp#508485)
1334 * bug fix: TRUNCATE with a single single-float or double-float argument is
1335 properly inlined when possible. (launchpad bug lp#489388)
1336 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1337 no longer causes a compiler error on x86 and ppc.
1338 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1339 always relative to *READTABLE* rather than the passed argument.
1341 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1342 * minor incompatible change: threading support is now enabled by default
1344 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1346 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1347 are now caught and reported just like errors during macroexpansion.
1348 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1349 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1350 * enhancement: ASDF systems can now depends on SB-QUEUE.
1351 * fixes and improvements related to Unicode and external formats:
1352 ** bug fix: error handling and restart usage in the ucs-2 external format
1354 ** there is now an implementation of the ucs-4 external format.
1355 ** the utf-16 and utf-32 external formats are supported.
1356 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1357 in the environment. setenv() and unsetenv() are also provided. (reported by
1358 Fare Rideau; launchpad bug lp#460455)
1359 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1360 loading. This ensures sensible errors for .FASL files from other
1361 implementations on case-insensitive filesystems. (reported by Willem
1362 Broekema; launchpad bug lp#489417)
1363 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1364 Willem Broekema; launchpad bug lp#489698).
1365 * bug fix: some minor code rearrangements to reenable warning-free building
1366 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1367 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1369 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1372 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1373 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1374 * improvement: support O_LARGEFILE access to files larger than 2GB on
1375 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1376 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1377 definitions for methods specializing on the passed class itself.
1378 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1379 definitions for methods specializing on the passed class itself, or on
1381 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1382 about itself during the build (e.g. for M-? in Slime), if this flag is
1383 enabled in customize-target-features.lisp. This will increase the core
1384 size by about 5-6mb, though, so it's mostly interesting to SBCL
1386 * new feature: various GENCGC tuning parameters have been experimentally
1387 documented and exported from SB-EXT. See documentation for details.
1388 * fixes and improvements related to Unicode and external formats:
1389 ** the Unicode character database has been upgraded to the
1390 Unicode 5.2 standard, giving names and properties to a number of new
1391 characters, and providing a few extra characters with case
1393 ** improvement: restarts for providing replacement input/output on coding
1394 errors for fd-stream external formats.
1395 ** improvement: where :<encoding> is a keyword corresponding to an
1396 external format the system supports, it is now possible to specify
1397 (:<encoding> :replacement <character>) as an external format which will
1398 automatically substitute <character> on encoding or decoding errors for
1399 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1401 ** improvement: the file streams underlying the standard streams (such as
1402 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1403 which uses the replacement mechanism to handle encoding errors,
1404 preventing various infinite error chains and unrecoverable I/O
1406 ** minor incompatible change: the utf-8 external format now correctly
1407 refuses to encode Lisp characters in the surrogate range (char-codes
1408 between #xd800 and #xdfff).
1409 ** fix a typo preventing conversion of strings into octet vectors
1410 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1412 ** fix a bug in the octet multibyte handling of decoding errors and the
1413 USE-VALUE restart. (launchpad bug lp#314939)
1414 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1415 restart on fd-stream decoding errors.
1416 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1417 error is near the end of file.
1418 ** fix a double-error case in unibyte octet conversions, when the first
1419 use of USE-VALUE is ignored.
1420 ** fix bugs in handling of undefined code points in unibyte encodings.
1421 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1422 streams after an UNREAD-CHAR.
1423 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1424 object is allocated in a boxed region of dynamic space.
1425 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1426 fork with multiple Lisp threads running is made, instead of going
1427 ahead with unpredictable consequences. (reported by Leslie Polzer)
1428 * bug fix: uses of slot accessors on specialized method parameters within
1429 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1430 error while finalizing the class. This fix may cause classes with slot
1431 accessors to be finalized later than previously. (reported by Lars Rune
1432 Nøstdal; launchpad bug lp#473699)
1433 * bug fix: restore buildability on the MIPS platform. (regression from
1434 1.0.30.38, reported by Samium Gromoff)
1435 * bug fix: inspecting closures is less likely to fail with a type error.
1436 * bug fix: no timer starvation when setting the system clock back.
1437 (launchpad bug lp#460283)
1438 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1439 standard pprint dispatch table as specified by CLHS.
1440 * bug fix: give CLISP a hint about a type declaration to enable it to build
1441 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1443 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1444 (reported by Attila Lendvai; launchpad bug lp#310132)
1445 * bug fix: distinguish in type specifiers between arrays that might be
1446 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1447 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1448 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1449 * bug fix: setting the value of a symbol-macro within a method in the
1450 presence of type declarations works properly again. (reported by Iban
1451 Hatchondo; launchpad bug lp#485019)
1453 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1454 * optimization: faster FIND and POSITION on strings of unknown element type
1455 in high SPEED policies. (thanks to Karol Swietlicki)
1456 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1458 * improvement: better error signalling for bogus parameter specializer names
1459 in DEFMETHOD forms (reported by Pluijzer)
1460 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1462 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1464 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1465 removes previous default initargs (reported by Lars Rune Nøstdal and
1467 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1468 lambda-lists. (reported by Peter Seibel)
1469 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1470 correctly when starting from an executable core without saved runtime
1471 options (reported by Faré Rideau, thanks to Zach Beane)
1472 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1473 an optimization note instead. (reported by Martin Cracauer)
1474 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1475 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1476 new process group if it doesn't need to share stdin with the sbcl
1477 process. (thanks to Leslie Polzer)
1478 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1479 (reported by Stanislaw Halik)
1481 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1482 * improvement: stack allocation is should now be possible in all nested
1483 inlining cases: failure to stack allocate when equivalent code is manually
1484 open coded is now considered a bug.
1485 * improvements related to Unicode:
1486 ** the Unicode character database has been upgraded to the
1487 Unicode 5.1 standard, giving names and properties to a number of new
1488 characters, and providing a few extra characters with case
1490 ** the system now recognizes and produces names for Unicode Hangul
1491 syllable characters.
1492 ** the EBCDIC-US external-format is now supported for octet operations
1493 (as well as for stream operations).
1494 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1495 be used to output toplevel compile-time effects into a separate .CFASL
1497 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1498 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1500 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1502 * optimization: division of floating point numbers by constants uses
1503 multiplication by reciprocal when an exact reciprocal exists.
1504 * optimization: multiplication of single- and double-floats floats by
1505 constant two has been optimized.
1506 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1507 sufficient type information is available. (thanks to Leslie Polzer)
1508 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1509 known structure objects are as efficient as defstruct generated accessors.
1510 * optimization: unused vector creation can now be optimized away.
1511 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1512 * improvement: a STYLE-WARNING is signalled when a generic function
1513 clobbers an earlier FTYPE proclamation.
1514 * improvement: the compiler is able to track the effective type of
1515 generic function across method addition and removal even in the
1516 absence of an explicit DEFGENERIC.
1517 * improvement: DESCRIBE now reports on symbols naming undefined
1518 but assumed or declared function as well.
1519 * improvement: recompilation of systems using SB-GROVEL now works
1520 (thanks to Leslie Polzer)
1521 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1522 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1524 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1525 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1526 well as user defined declaration names.
1527 ** VARIABLE-INFORMATION is now aware of alien variables.
1528 * improvement: improved address space layout on OpenBSD (thanks to Josh
1530 * improvement: pretty-printing of various Lisp forms has been improved
1531 (thanks to Tobias Rittweiler)
1532 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1533 unused were deleted in safe code. (reported by John Fremlin)
1534 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1536 * bug fix: some out-of-line array predicates were missing (reported by
1538 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1540 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1541 (thanks to Larry D'Anna)
1542 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1543 as well. (reported by Josh Elsasser)
1544 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1545 leading to possible attempts to delete the same file twice. See docstring
1546 on DELETE-FILE for details. (reported by John Fremlin)
1547 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1548 designator argument, rather than its truename. (reported by Luis
1550 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1551 information about some array types. (thanks to Luis Oliveira)
1552 * bug fix: moderately complex combinations of inline expansions could
1553 be miscompiled if the result was declared to be dynamic extent.
1554 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1555 form (+ <variable> <integer>) were miscompiled under certain
1557 * bug fix: in some cases no compiler note about failure to stack allocate
1558 was emitted, even if the objects were in fact heap allocated.
1559 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1560 allocation could cause objects users might reasonably expect to
1561 be heap allocated to be stack allocated.
1562 * bug fix: DESCRIBE signalled an error for generic functions under
1563 certain circumstances. (thanks to Leslie Polzer)
1564 * bug fix: Fixed spelling of an error message.
1566 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1567 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1568 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1569 of SB-THREAD:THREAD-ERROR-THREAD.
1570 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1571 * new feature: docstrings for local and anonymous functions are no longer
1572 discarded. (thanks to Leslie Polzer)
1573 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1574 values in other threads.
1575 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1576 about object allocation.
1577 * optimization: division of a real float by a complex float is implemented
1578 with a specialised code sequence.
1579 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1580 keywords is an order of magnitude faster.
1581 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1582 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1583 methods, and similarly for non-standard metaclass classes as long as there
1584 are no methods additional on MAKE-INSTANCE.
1585 * optimization: more efficient type-checks for FIXNUMs when the value
1586 is known to be a signed word on x86 and x86-64.
1587 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1588 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1590 * optimization: compiler is smarter about delegating argument type checks to
1592 * optimization: several character functions are now compiled somewhat more
1593 efficiently. (reported by Lynn Quam)
1594 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1595 * improvement: less unsafe constant folding in floating point arithmetic,
1596 especially for mixed complex/real -float operations.
1597 * optimization: constant double and single floats are stored in native
1598 unboxed format on x86[-64].
1599 * optimization: smarter code for arithmetic operations with constant floats,
1600 complex floats, or integers on x86[-64].
1601 * optimization: smarter code for conjugate/multiplication of float complexes
1602 and abs/negate of floats on x86-64.
1603 * optimization: more efficient complex float and real float operations on
1605 * improvement: complex float division is slightly more stable.
1606 * improvement: DESCRIBE output has been reworked to be easier to read and
1607 contains more pertinent information.
1608 * improvement: failure to provide requested stack allocation compiler notes
1609 provided in all cases (requested stack allocation not happening without a
1610 note being issued is now considered a bug.)
1611 * bug fix: SB-POSIX exports the documented types and functions
1612 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1613 types. (reported by "abhi")
1614 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1615 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1616 (thanks to Paul Khuong)
1617 * bug fix: looping around HANDLER-CASE could silently consume stack space
1618 on each iteration. (reported by "foobar")
1619 * bug fix: better error signalling when calls to functions seeking elements
1620 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1621 (reported by Tobias Rittweiler)
1622 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1623 directory components now works as it used to. (various prolems reported by
1624 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1625 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1626 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1627 * bug fix: bogus undefined variable warnings from fopcompiled references to
1628 global variables. (thanks to Lars Rune Nøstdal)
1629 * bug fix: foreign function names should now appear in backtraces on
1630 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1631 * bug fix: SETF compiler macro documentation strings are not discarded
1633 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1634 (thanks to Alex Plotnick)
1635 * bug fix: SLEEP accepts large integer arguments, truncating them to
1636 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1637 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1638 * bug fix: compiler notes for expensive slot type checks could be emitted
1639 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1641 changes in sbcl-1.0.29 relative to 1.0.28:
1642 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1643 https://bugs.launchpad.net/sbcl
1644 Bugs can be reported directly there, or by sending email to
1645 sbcl-bugs@lists.sourceforge.net
1646 (no subscription required.)
1647 * minor incompatible change: under weak type checking policy integer
1648 types are weakened less aggressively.
1649 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1650 allowed to return, which causes SBCL to quit with exit status 0. Previously
1651 if the function returned with a small integer return value, that value
1652 was accidentally reused as the exit status.
1653 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1654 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1655 :HASH-FUNCTION argument. Refer to user manual for details.
1656 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1658 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1659 microseconds since the Unix epoch on all platforms.
1660 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1661 allows the compiler to safely elide boundedness checks for special
1663 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1664 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1665 efficiency measure for threaded platforms, but also valueable in
1667 * new feature: UNC pathnames are now understood by the system on Windows.
1668 * optimization: the compiler uses a specialized version of FILL when the
1669 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1671 * optimization: accesses to potentially non-simple arrays where element type
1672 is known are 50% faster.
1673 * optimization: compiler now generates faster array typechecking code.
1674 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1676 * optimization: multidimensional array accesses in the absence of type
1677 information regarding array rank are approximately 10% faster due to
1678 open coding of ARRAY-RANK.
1679 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1680 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1682 * optimization: result of call to VECTOR can now be stack allocated.
1683 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1684 as long as the resulting array is one-dimensional and has a known
1685 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1686 length of the list matches the known length of the vector does not
1687 allocate the list as an intermediate step. Ditto for VECTOR and simple
1689 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1690 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1691 known element type, and is known to be simple and one dimensional.
1692 * improvement: SBCL now emits a compiler note where stack allocation was
1693 requested but could not be provided (not in all cases, unfortunately)
1694 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1695 * improvement: pretty-printing loop has been implemented properly. (thanks
1696 to Tobias Rittweiler)
1697 * documentation: CLOS slot typechecing policy has been documented.
1698 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1699 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1700 pointer, leading to memory faults. (thanks to Bart Botta)
1701 * bug fix: better floating point exception handling on x86/OpenBSD.
1702 (thanks to Josh Elsasser)
1703 * bug fix: exit status from QUIT when called under --script was lost
1704 (reported by Hubert Kauker)
1705 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1706 same implementation of FILL to initialize the array, even if a more
1707 efficient one was available (reported by Stas Boukarev, thanks to
1709 * bug fix: potential miscompilation of array stack allocation on x86 and
1710 x86-64. (reported by Time Tossavainen)
1711 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1712 result in their subforms being treated as top level forms. (reported by
1714 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1715 than a machine register could leave garbage in the high bits of the
1716 result register (bug 316325).
1717 * bug fix: disable address space randomization Linux/x86-64 as well,
1718 not just x86-64. (reported by Ken Olum)
1719 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1720 generate incorrect code.
1721 * bug fix: #201; type inference for CONS and ARRAY types could derive
1722 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1723 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1724 could not be assigned to or bound with PROGV. (reported by Lorenz
1726 * bug fix: the value of CL:- in the inspector was the previous expression
1727 evaluated rather than the expression being evaluated.
1728 * bug fix: constants can no longer be locally declared special.
1729 * bug fix: signals delivered to threads started from foreign land (read:
1730 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1731 thread by blocking all signals and resignalling.
1732 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1733 from :INITFORM, if any.
1735 changes in sbcl-1.0.28 relative to 1.0.27:
1736 * a number of bugs in cross-compilation have been fixed, with the ultimate
1737 result that building under (at least) clisp should be much more reliable.
1738 * minor incompatible changes: echo-streams now propagate unread-char to the
1739 underlying input stream, and no longer permit unreading more than one
1741 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1742 frames, allowing for instance more reliable backtraces.
1743 * improvement: the debugger REPL can now reference lexical variables
1744 by name directly for code compiled with (DEBUG 3).
1745 * improvement: errors from malformed declarations now have better source
1746 paths associated with them. (thanks to Tobias Rittweiler)
1747 * optimization: faster local calls on x86/x86-64
1748 * bug fix: some error messages for out-of-bound array indexes confused the
1749 index and the bound. (thanks to Stas Boukarev)
1750 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1752 * bug fix: running regressions tests in shells without OSTYPE set now works.
1753 (reported by Harald Hanche-Olsen)
1754 * bug fix: more robust static space exhaustion signalling from
1755 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1756 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1757 docstring away instead of storing it under names such as (LAMBDA (X)).
1758 (reported by Leslie Polzer)
1759 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1760 (thanks to Ole Arndt for the patch)
1761 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1762 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1763 potentially-invalid effective methods in its cache.
1764 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1765 instances as well (thanks to Paul Khuong)
1766 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1767 SB-POSIX:WAITPID and their C equivalents.
1768 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1770 changes in sbcl-1.0.27 relative to 1.0.26:
1771 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1772 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1773 * improvement: the system either recovers from stack exhaustion or dies
1774 properly as opposed to leaving the user uncertain of whether the handler
1775 trampled on some random memory next to the stack or having to rely on
1776 --lose-on-corruption (which is still a good idea to use in production
1777 because stack exhaustion can happen in signal handlers which will likely
1779 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1780 1.0.25.37, reported by Harald Hanche-Olsen)
1781 * bug fix: work around signal delivery bug in darwin (regression from
1782 1.0.25.44, reported by Sidney Markowitz)
1783 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1785 changes in sbcl-1.0.26 relative to 1.0.25:
1786 * incompatible change: an interruption (be it a function passed to
1787 INTERRUPT-THREAD or a timer function) runs in an environment where
1788 interrupts can be enabled. The interruption can use
1789 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1790 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1791 potentially running out of stack. Keep in mind that in the absence
1792 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1793 acquiring a lock can enable interrupts.
1794 * incompatible change: GC-OFF and GC-ON are removed, as they were
1795 always unsafe. Use WITHOUT-GCING instead.
1796 * new feature: runtime option --disable-ldb
1797 * new feature: runtime option --lose-on-corruption to die at the
1798 slightest hint of possibly non-recoverable errors: running out of
1799 memory, stack, alien stack, binding stack, encountering a memory
1800 fault, etc. In the absence of --lose-on-corruption a warning is
1802 * enhancement: detect binding stack exhaustion
1803 * enhancement: detect alien stack exhaustion on x86/x86-64
1804 * improvement: generally more stable and reliable interrupt handling
1805 * improvement: there is a per thread interruption queue,
1806 interruptions are executed in order of arrival
1807 * improvement: a repeating timer reschedules itself when the it has
1808 finished, but expiration times are spaced equally. If an
1809 expiration time is in the past it will trigger after a short grace
1810 period that may give a chance to other things to run.
1811 * optimization: slightly faster gc on multithreaded builds
1812 * optimization: faster WITHOUT-GCING
1813 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1814 important locks so that the debugger/handler doesn't produce
1815 recursive errors or deadlock.
1816 * bug fix: real-time signals are not used anymore, so no more
1817 hanging when the system wide real-time signal queue gets full.
1818 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1820 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1821 * bug fix: fix random memory faults related to interrupts on alpha
1822 * bug fix: fix random memory faults related to interrupts on sparc
1823 * bug fix: fix deadlocks related to starting threads
1824 * bug fix: fix deadlines on locks on futex platforms
1825 * bug fix: restore errno in signal handlers
1826 * bug fix: fix deadlocks related to hash tables
1827 * bug fix: fix deadlocks in pcl
1829 changes in sbcl-1.0.25 relative to 1.0.24:
1830 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1831 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1832 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1833 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1834 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1835 better name and does not return values so stale on multiprocessor systems.
1836 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1838 * improvement: unithread builds keep track of MUTEX-VALUE.
1839 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1840 stream anymore making it thread safe to have a concurrent reader and
1841 a writer, for instance, in a pipe.
1842 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1843 arguments, making compiler-macros for SETF-functions able to inspect
1844 their constant arguments.
1845 * improvement: COMPILE-FILE reports times with millisecond accuracy
1846 (thanks to Luis Oliveira)
1847 * optimization: CHAR-CODE type derivation has been improved, making
1848 TYPEP elimination on subtypes of CHARACTER work better. (reported
1849 by Tobias Rittweiler, patch by Paul Khuong)
1850 * bug fix: setting alien structure fields of type struct by value now
1851 computes the right offset for the memory copy.
1852 * bug fix: compilation problem involving inlined calls to aliens with
1853 result type VOID. (reported by Ken Olum)
1854 * bug fix: #235a; sequential inline expasion in different policies no
1855 longer reuses the functional from the previous expansion site.
1856 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1857 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1858 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1859 cause an implied type redefinition. Regression from 1.0.21.29.
1860 * bug fix: sign-extension of small signed return values now works with C
1861 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1862 * improvements to the Windows port:
1863 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1864 Westfold, thanks to Rudi Schlatte)
1866 changes in sbcl-1.0.24 relative to 1.0.23:
1867 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1868 vector of a multidimensional SIMPLE-ARRAY.
1869 * new feature: the system now signals a continuable error if standard
1870 readtable modification is attempted. (thanks to Tobias Rittweiler)
1871 * new feature: DIRECTORY has been extended with a non-standard keyword
1872 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1873 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1874 has been robustified and documented better. (thanks to Robert Goldman)
1875 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1876 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1877 * tradeoff: constant FORMAT control strings are now compiled unless
1878 SPACE > SPEED (previously only when SPEED > SPACE.)
1879 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1881 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1883 * bug fix: lexical type declarations are now correctly reported by
1884 SB-CLTL2. (reported by Larry D'Anna)
1885 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1886 using UTF-8 as external format. (thanks to Luis Oliveira)
1887 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1888 are signalled correctly. (thanks to Stas Boukarev)
1889 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1890 designator. (thanks to Tobias Rittweiler)
1891 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1892 designator, and returns T instead of the function. (thanks to
1894 * bug fix: direct superclasses of STANDARD-CLASS and
1895 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1896 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1897 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1898 when no class with the named slot yet exists no longer causes a
1899 compile-time style-warning.
1900 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1901 in safe code. (reported by Didier Verna)
1902 * bug fix: #430; nested structure constructors can stack allocate.
1903 * bug fix: on some 64-bit platforms dynamic space size was truncated
1904 to #xffff0000 bytes. (reported by Benjamin Lambert)
1905 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1906 REPL unusable. (reported by Daniel Herring)
1907 * bug fix: return values of READ-SEQUENCE did not take :START into
1908 account on file streams, regressions since 1.0.12.22. (reported by
1909 Thomas Russ, patch by Paul Khuong)
1910 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1911 method specializer used to confuse permuation vector optimization.
1912 * bug fix: system inserted bogus implicit type declarations for local
1913 special variables in DEFMETHOD bodies.
1914 * bug fix: #354; duplicated frames in backtraces due to
1915 non-tail-call-optimized XEPs to functions with return type NIL
1917 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1918 initializes structure object slots according to DEFSTRUCT initforms,
1919 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1920 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1921 (reported by Bruno Haible and Stephen Wilson)
1922 * bug fix: #395; fill-pointer output streams used now support
1923 element-type BASE-CHAR as well.
1924 * bug fix: compiler error when attempting to derive return value of
1925 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1927 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1929 * bug fix: Mac OS X binaries should now be portable between Leopard
1932 changes in sbcl-1.0.23 relative to 1.0.22:
1933 * enhancement: when disassembling method functions, disassembly
1934 for the associated fast function is also produced.
1935 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1937 * optimization: printing with *PRINT-PRETTY* true is now more
1938 efficient as long as the object being printed doesn't require
1939 special handling by the pretty printer.
1940 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1941 now interact correctly with type declarations.
1942 * partial bug fix: PCL detects infinite recursion during wrapper
1943 validation. (thanks to Attila Lendvai)
1944 * bug fix: #426; nested function calls are inlined properly.
1945 Previously if FOO was an inline function, in calls of the form
1946 (FOO (FOO ...)) the outer call was not inlined.
1947 * bug fix: long long arguments passed in registers to alien
1948 functions on PowerPC Linux and NetBSD are now handled correctly
1949 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1951 changes in sbcl-1.0.22 relative to 1.0.21:
1952 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1953 for the shared object in the current directory, but passes the native
1954 namestring of the designated pathname to the operation system's shared
1955 object loading function as-it.
1956 * minor incompatible change: --disable-debugger toplevel option now takes
1957 effect before processing of initialization files and --eval or --load
1959 * new feature: new commandline argument: --script, which supports
1960 shebang lines. See documentation for details. (based on work by
1962 * new feature: SAVE-LISP-AND-DIE can save current values of
1963 --dynamic-space-size and --control-stack-size in the executable core,
1964 causing it to skip normal runtime option processing. See documentation
1965 for details. (thanks to Zach Beane)
1966 * enhancement: inoccous calls to EVAL or generic functions dispatching
1967 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1968 * enhancement: the system no longer resignals errors from --load and
1969 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1970 associated with the original error to be lost. (thanks to Ariel
1972 * enhancement: :DONT-SAVE keyword argument has been added to
1973 LOAD-SHARED-OBJECT for controlling interaction with
1974 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1975 the effects of an earlier LOAD-SHARED-OBJECT call.
1976 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1977 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1978 provided. (reported by Cedric St-Jean)
1979 * bug fix: circularity handling in the reader did not treat raw
1980 structure slots correctly. (reported by Cedric St-Jean)
1981 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1982 file descriptors when there were none.
1983 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1984 was broken. (reporteed by Willem Broekema)
1985 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1986 pathnames without a directory.
1987 * bug fix: COMPILE-FILE did not warn about undefined variable
1988 references at toplevel, and LOAD of the resulting fasl did
1989 not signal an error.
1990 * bug fix: functions with non-required arguments used to end up with
1991 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1992 * bug fix: redefining a function with non-required arguments didn't
1993 update the system's knowledge about its call signature properly.
1994 * bug fix: fixed #431; incompatible alien record type redefinitions
1995 are detected and handled. (reported by Neil Haven)
1996 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1997 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1999 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
2000 after alien stack frames.
2001 * bug fix: strings passed to mk{s,d}temp lacked null termination
2003 changes in sbcl-1.0.21 relative to 1.0.20:
2004 * new feature: the compiler is able to track the effective type of a
2005 generic function across method addition and removal.
2006 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
2007 appropriately typed structure slots without locking.
2008 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
2009 information like those gathered by TIME using a programming-friendly
2011 * new feature: TIME reports time taken even if the form performs a
2012 non-local transfer of control.
2013 * enhancement: reduced conservativism on GENCGC platforms: on
2014 average 45% less pages pinned (measured from SBCL self build).
2015 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
2016 mutate constant symbols or violate declaimed type of the symbol.
2017 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
2018 sleeping on the semaphore in heavily contested semaphores.
2019 * bug fix: semaphores and condition variables were not interrupt
2021 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
2022 owned by other threads anymore.
2023 * bug fix: FIND on lists called KEY outside the specified
2024 subsequence. (reported by budden)
2025 * bug fix: LOG doesn't use single-float intermediate results when
2026 given mixed integer and double-float arguments, leading to better
2027 precision. (reported by Bob Felts)
2028 * bug fix: LOG with base zero returned values of inconsistent type.
2030 changes in sbcl-1.0.20 relative to 1.0.19:
2031 * minor incompatible change: OPTIMIZE qualities
2032 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
2033 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
2034 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
2035 * documentation: some slot access efficiency guidelines have been
2036 added to the user manual.
2037 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
2038 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
2039 as ASSOC and MEMEBER.
2040 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
2041 to more efficient EQ-comparison versions more often.
2042 * optimization: enhanced derivation of DOLIST iteration variable type
2044 * optimization: constant folding of simple (LIST ...) forms as DOLIST
2046 * optimization: runtime lookup of function definitions can be
2047 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
2048 * optimization: compiler is able to derive the return type of
2049 (AREF (THE STRING X) Y) as being CHARACTER.
2050 * optimization: CLRHASH on empty hash-tables no longer does pointless
2051 work. (thanks to Alec Berryman)
2052 * optimization: REPLACE deftransforms don't punt when :START1 or
2054 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
2055 no longer emits a code deletion note. (reported by Andrew
2057 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
2058 functions with an odd number of &OPTIONAL arguments, a &REST
2059 argument, and one or more &KEY arguments at the call site.
2060 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
2061 arguments appeared at call sites as well.
2062 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
2063 READ-LINE &co can no longer read from them afterwards. (reported
2065 * bug fix: fixed #427: unused local aliens no longer cause compiler
2066 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
2068 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
2069 alien-stack leakage. (reported by Andy Hefner)
2070 * bug fix: PROGV signals an error when an attempt to violate declared
2071 type of a variable or bind a constant is made.
2072 * bug fix: SET signals an error when an attempt to violate declared
2073 type of a variable is made.
2074 * bug fix: restart computation during the execution of a restart
2075 test function no longer causes infinite recursion. (reported by
2077 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2078 signals an error. (thanks to Pierre Mai)
2079 * bug fix: EXPORT left symbol unexported in conflict situations.
2080 (thanks to Michael Weber)
2081 * bug fix: correctly handle name conflicts involving CL:NIL.
2082 (thanks to Michael Weber)
2083 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2084 conflicts arising from USEing package with conflicting symbols
2085 correctly. (thanks to Michael Weber)
2087 changes in sbcl-1.0.19 relative to 1.0.18:
2088 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2089 warnings that go otherwise unhandled will be muffled if they are
2090 of the type that's the value of this variable.
2091 * optimization: stack allocation is slightly more efficient on x86
2093 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2094 where a raw slot always is initialized using the initform whose
2095 type is not know sufficiently well a compile-time are now compiled
2096 correctly. (reported by John Morrison)
2097 * bug fix: compiler no longer makes erronous assumptions in the
2098 presence of non-foldable SATISFIES types.
2099 * bug fix: stack analysis missed cleanups of dynamic-extent
2100 arguments in non-let-converted calls to local functions.
2101 * improvements to the Windows port:
2102 ** adjusted address spaces for building on both Win32 and
2103 Win64. (thanks for John Connors)
2104 * fixed some bugs revealed by Paul Dietz' test suite:
2105 ** interval arithmetic during type derivation used inexact integer
2106 to single-float coercions.
2107 ** arithmetic operations involving large integers and single
2108 floats give the same results in compiled and interpreted code.
2109 ** deriving the result type of COERCE no longer signals an error
2110 if the derived type of the second argument is a MEMBER type
2111 containing invalid type specifiers.
2112 ** ADJOIN with constant NIL as second argument works correctly.
2113 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2115 changes in sbcl-1.0.18 relative to 1.0.17:
2116 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2117 profiles only the current thread.
2118 * minor incompatible change: changes to SYMBOL-VALUE of constants
2119 defined with DEFCONSTANT now signal an error.
2120 * enhancement: SB-SPROF now has support for wallclock profiling,
2121 and is also able to profile specific threads. REPORT output
2122 has also additional sorting options.
2123 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2125 * optimization: structure allocation has been improved
2126 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2127 ** out of line constructors are ~10% faster.
2128 ** inline constructors are ~15% faster.
2129 ** inline constructors are capable of dynamic extent allocation
2130 (generally on x86 and x86-64, in some cases on other platforms
2132 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2134 * optimization: file compiler is now able to coalesce non-circular
2135 lists, non-base strings, and bit-vectors. Additionally, constants
2136 are never referenced through SYMBOL-VALUE at runtime.
2137 * optimization: code defining methods on PRINT-OBJECT (and other
2138 generic functions in the COMMON-LISP package) now loads faster.
2139 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2141 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2142 fasl is now deleted. (reported by Attila Lendvai)
2143 * bug fix: READ-LINE always returned NIL for the last line in files.
2144 (reported by Yoshinori Tahara)
2145 * bug fix: more accurate disassembly annotations of foreign function
2146 calls. (thanks to Andy Hefner)
2147 * bug fix: trimming non-simple strings and non-string string
2148 designators when the there is nothing to trim works properly.
2149 (thanks to James Knight)
2150 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2151 (thanks to Travis Cross)
2152 * fixed some bugs revealed by Paul Dietz' test suite:
2153 ** NIL is a valid function name (regression at 1.0.13.38)
2154 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2155 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2156 fill pointers properly (regression at 1.0.12.23)
2157 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2158 displacement indices properly (regression at 1.0.12.23)
2160 changes in sbcl-1.0.17 relative to 1.0.16:
2161 * temporary regression: user code can no longer allocate closure
2162 variable storage on stack, due to bug 419 without explicitly
2163 requesting it. Please consult sbcl-devel for advice if you need to
2164 use this feature in the meanwhile.
2165 * new feature: runtime argument --control-stack-size can be used to
2166 adjust thread default control stack size.
2167 * enhancement: improved TIME output
2168 ** all times are reported using the measured accuracy (milliseconds
2169 for real and GC times, microseconds for everything else.)
2170 ** processor cycle counts on x86 and x86-64.
2171 ** interpreted forms are counted for both evaluator modes.
2172 ** number of lambdas converted by the compiler is reported.
2173 ** CPU percentage report (computed from real and total run time.)
2174 ** more comprehensive run time reporting, using a condenced format
2175 ** interperted form, lambda, and page fault counts are omitted
2177 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2179 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2180 * optimization: two argument forms of LAST are upto ~10% faster
2181 in normal SPEED policies.
2182 * optimization: NCONC no longer needs to heap cons its &REST list
2183 in normal SPEED policies.
2184 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2185 to Sidney Markowitz)
2186 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2187 regression since 1.0.9.1. (thanks to Eric Marsden)
2188 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2189 since 1.0.15.36. (thanks to Paul Khuong)
2190 * bug fix: LAST when always returned the whole list when given a bignum
2191 as the second argument.
2192 * bug fix: dynamic extent allocation of nested lists and vectors
2193 could leak to otherwise accessible parts.
2194 * bug fix: invalid optimization of heap-allocated alien variable
2196 * bug fix: fasl header checking is less vulnerable to different
2197 platform word lengths.
2198 * bug fix: more correct assembler syntax for GNU binutils
2199 2.18.50.0.4 support. (thanks to Marijn Schouten)
2200 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2202 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2203 declarations) successfully. (reported by Attila Lendvai)
2205 changes in sbcl-1.0.16 relative to 1.0.15:
2206 * minor incompatible change: revert the changes to sb-posix's error
2207 signaling added in 1.0.14.
2208 * minor incompatible change: change PROBE-FILE back to returning
2209 NIL whenever we can't get a truename, as was the case before 1.0.14.
2210 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2211 inherits from ERROR instead of just CONDITION.
2212 * new feature: SB-INTROSPECT can provide source locations for instances
2213 as well. (thanks to Tobias Rittweiler)
2214 * optimization: binding special variables now generates smaller code
2215 on threaded platforms.
2216 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2217 and cases where no :TEST is given but the compiler can infer that
2218 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2219 * optimization: better LOGNOT on fixnums.
2220 * optimization: modular arithmetic for a particular requested width
2221 is implemented using a tagged representation unless a better
2222 representation is available.
2223 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2224 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2225 for wellformedness and returns a specialized vector. (reported by
2226 Francois-Rene Rideau)
2227 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2228 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2229 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2230 unscheduling timer at the same time as another timer fires.
2231 * bug fix: don't reschedule timers for dead threads.
2232 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2233 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2234 bogus errors if select() was interrupted.
2235 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2237 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2238 * enhancement: cleaner backtraces for interactive interrupts, as
2239 well as other cases where the interesting frames used to be
2240 obscured by interrupt handling frames.
2241 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2242 now supported, and tracing a whole package using (TRACE "FOO") now
2243 traces SETF-functions as well.
2244 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2245 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2246 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2247 * unreadably printed representation of hash-tables now includes
2249 * bug fix: partially fixed #188: type propagation from assignments
2250 is now more efficient.
2251 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
2252 'DOUBLE-FLOAT) are not flushable.
2253 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
2254 full address of the object, and none of the tag bits.
2255 * bug fix: readably printing hash-tables now respects other printer
2256 control variables. (reported by Cedric St-Jean)
2257 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
2258 keyword with MAKE-HASH-TABLE.
2259 * bug fix: export SB-POSIX:MKSTEMP.
2260 * bug fix: SORT was not interrupt safe.
2261 * bug fix: XREF accounts for the last node of each basic-block as
2263 * bug fix: MAKE-INSTANCE optimizations interacted badly with
2264 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
2265 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2266 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2267 create obsolete instances in the case of redefinition or
2268 obsoletion of a superclass. (thanks to Andy Hefner)
2269 * bug fix: Support for the Alpha architecture has been revived; it had
2270 suffered somewhat from lack of maintenance since sbcl-1.0.
2271 * improvements to the Windows port:
2272 ** The system detects the codepage to use at startup, instead of
2273 using the value from the saved core. (thanks to Kei Suzuki)
2275 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2276 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2277 (see documentation for details.)
2278 * revived support for OpenBSD (contributed by Josh Elsasser)
2279 * partially fixed bug #108: ROOM no longer suffers from occasional
2280 (AVER (SAP= CURRENT END)) failures.
2281 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2282 bodies no longer cause a WARNING to be signalled. (reported by
2284 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2285 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2286 the bug in TRUNCATE.) (reported by Michael Weber)
2287 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2288 no samples. (reported by Andy Hefner)
2289 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2290 no longer appear as (NIL ...) frames in backtraces.
2291 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2292 is now actually exported from SB-EXT as documented. (reported by
2294 * bug fix: sb-aclrepl now correctly understands how to inspect
2295 single-floats on 64-bit platforms where single-floats are not boxed.
2296 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2297 yet been finalized. (reported by Levente Meszaros)
2298 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2299 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2300 SBCL-specific optimize qualities.
2302 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2303 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2304 an executable in the search path, and does so in the child
2305 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2306 been removed; it can be found in the CVS history, for somebody who
2307 needs that search behavior (see the manual).
2308 * minor incompatible change: compiler policy re. weakening type
2309 checks has changed: now type checks are weakened only if SAFETY < 2
2311 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2312 unparsing of directory pathnames as files. Analogously,
2313 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2314 filename to parse into a directory pathname.
2315 * enhancement: implicit generic function creation now signals a
2316 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2317 users can bind handlers for and muffle around calls to LOAD.
2318 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2319 to be used (using the default stream external format), and allows
2320 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2321 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2322 strings and vectors whose element-type or simplicity is not fully
2323 known at compile-time.
2324 * optimization: STRING-TRIM and related functions no longer allocate
2325 a new string when no trimming needs to be performed. These functions
2326 are also faster than before when the input string has been declared
2328 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2329 * optimization: READ-LINE is significantly faster for files containing
2331 * optimization: non-open coded uses of character comparison operators
2332 (e.g. char=) no longer cons when called with more than one parameter
2333 on platforms supporting dynamic-extent allocation.
2334 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2335 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2336 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2338 * bug fix: some sequence functions elided bounds checking when
2340 * bug fix: too liberal weakening of union-type checks when SPEED >
2342 * bug fix: more bogus fixnum declarations in ROOM implementation
2345 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2346 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2347 :SYNCHRONIZED argument, which makes the hash-table safe for
2348 concurrent accesses (but not iteration.) See also:
2349 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2350 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2351 * optimization: CONCATENATE on strings is an order of magnitude faster
2352 in code compiled with (> SPEED SPACE).
2353 * optimization: SUBSEQ is ~50% faster on lists.
2354 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2355 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2356 END is smaller then START.
2357 * bug fix: SB-PROFILE will no longer report extra consing for nested
2358 calls to profiled functions.
2359 * bug fix: ROOM implementation had bogus fixnum declarations which
2360 could cause type-errors when calling ROOM on large images.
2361 * bug fix: if file compilation is aborted, the partial fasl is now
2362 deleted, and COMPILE-FILE returns NIL as the primary value.
2363 * bug fix: number of thread safety issues relating to SBCL's internal
2364 hash-table usage have been fixed.
2365 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2366 be returned from its body when the values were being returned
2367 using unknown-values return convection and the W-P-O was wrapped
2368 inside an UNWIND-PROTECT.
2369 * bug fix: sb-posix should now compile again under Windows, enabling
2370 slime to work again.
2372 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2373 * incompatible change: hash-table accessor functions are no longer
2374 automatically protected by locks. Concurrent accesses on the same hash-table
2375 from multiple threads can give inconsistent results or even corrupt the
2376 hash-table completely. Multi-threaded applications should do their own
2377 locking at the correct granularity. In the current implementation it is
2378 still safe to have multiple readers access the same table, but it's not
2379 guaranteed that this property will be maintained in future releases.
2380 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2381 and will signal an error at runtime.
2382 * enhancement: SB-THREAD package now exports a semaphore interface.
2383 * enhancement: CONS can now stack-allocate on x86 and
2384 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2386 * enhancement: nested lists can now be stack allocated on
2387 platforms providing stack allocation support.
2388 * enhancement: dynamic-extent support has been extended to support
2389 cases where there are multiple possible sources for the stack
2391 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2392 if the mutex is uncontested on Linux.
2393 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2394 as specified by the CLHS. (thanks to Tobias Rittweiler)
2395 * bug fix: NaN comparison now works on x86-64.
2396 * bug fix: CLOSE :ABORT T on a stream with pending output now
2398 * bug fix: instances of non-standard metaclasses using standard
2399 instance structure protocol sometimes missed the slot type checks
2401 * bug fix: known functions can be inlined in high-debug code.
2403 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2404 * minor incompatible change: the MSI installer on Windows no longer
2405 associates .lisp and .fasl files with the installed SBCL.
2406 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2407 on Windows. (thanks to Luis Oliviera)
2408 * new feature: SB-CLTL2 contrib module now implements
2409 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2410 * optimization: scavenging weak pointers is now more efficient,
2411 requiring O(1) instead of O(N) per weak pointer to identify
2412 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2413 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2414 method bodies using constant slot-names when the first argument is
2415 a specializer parameter for the method.
2416 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2417 names, when the class of the instance is a direct instance
2418 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2419 as slow as the constant slot-name case.)
2420 * optimization: member type construction is now O(N) instead
2422 * optimization: UNION and NUNION are now O(N+M) for large
2423 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2425 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2426 now more readable in environments like Slime which display it.
2427 (thanks to Tobias C. Rittweiler)
2428 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2429 was able to infer the correct argument type for the object on which
2430 the CAS operation was being performed.
2431 * bug fix: copy propagation interfered with parallel assignment
2432 semantics in local calls. (reported by Paul Khuong)
2433 * bug fix: the signed modular fixnum shift compiled to wrong code on
2434 x86 and x86-64. (spotted by a slight modification to some of
2437 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2438 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2439 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2440 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2442 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2443 and generic function now print the object identity for anonymous
2444 instances. (thanks to Attila Lendvai)
2445 * enhancement: as an extension to MOP, SBCL now supports SETF of
2446 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2447 (thanks to Attila Lendvai)
2448 * enhancement: sb-cover has an alternate annotation mode which puts
2449 the form annotations at the car of the form, instead of annotating
2450 it completely. The benefit of this mode is that it shows better
2451 which forms were instrumented by the compiler.
2452 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2453 by printer control variables. (reported by Dan Corkill)
2454 * bug fix: system leaked memory when delayed output was performed by
2455 the OS in smaller chunks then expected. (thanks to David Smith)
2456 * bug fix: system leaked memory when file streams were not closed
2458 * bug fix: large objects written to slow streams that were modified
2459 after the write could end up with the modified state written to
2460 the underlying file descriptor.
2461 * bug fix: multiple threads operating in parallel on the same stream
2462 could cause buffer-overflows.
2463 * bug fix: source location information is stored correctly
2464 (broken since 1.0.6). This bug would generally show up as the
2465 Slime debugger highlighting the wrong form when the sldb-show-source
2467 * bug fix: Branch forms are again annotated as branches in the sb-cover
2469 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2470 on x86-64. (reported by Gregory Vanuxem)
2471 * bug fix: EQUALP could return wrong results for structures with raw
2472 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2473 word). (reported by Vjacheslav Fyodorov)
2474 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2477 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2478 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2479 atomic compare-and-swap operations on threaded platforms.
2480 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2481 allows assigning a global minimum value to optimization qualities
2482 (overriding proclamations and declarations).
2483 * enhancement: closed over variables can be stack-allocated on x86
2485 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2487 * optimization: slot definition lookup is now O(1). This speeds up
2488 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2489 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2490 * optimization: ASSOC and MEMBER can now be open-coded for all
2491 combinations of keyword arguments when second argument is constant
2492 and SPEED >= SPACE. In other cases a specialized version is
2494 * bug fix: using obsoleted structure instances with TYPEP and
2495 generic functions now signals a sensible error.
2496 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2497 (reported by Kristoffer Kvello)
2498 * bug fix: backtrace construction is now more careful when making
2499 lisp-objects from pointers on the stack, to avoid creating bogus
2500 objects that can be seen by the GC.
2501 * bug fix: defaulting of values in contexts expecting more than 7
2502 variables now works on x86-64. (reported by Christopher Laux)
2503 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2505 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2506 as the property-list of a symbol.
2507 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2508 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2509 situations requested, are once again file-compileable. (reported
2512 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2513 * MOP improvement: support for user-defined subclasses of
2514 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2515 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2516 the expansion of DEFMETHOD, is responsible for generating a form
2517 which creates a list of specializers when evaluated. Additional
2518 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2519 debugging and introspective support.
2520 * minor incompatible change: the (unsupported) spinlock interface
2521 has changed: free spinlock now has the value NIL, and a held spinlock
2522 has the owning thread as its value.
2523 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2524 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2526 * enhancement: name of a socket-stream is now "a socket" instead of
2527 "a constant string".
2528 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2529 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2530 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2531 for generic functions. (Thanks to Tobias C. Rittweiler)
2532 * optimization: bignum printing speed has been improved by 20-40%
2533 (depending on the bignum size.)
2534 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2536 * bug fix: the cache used by the CLOS to store precomputed effective
2537 methods, slot offsets, and constant return values is now thread and
2539 * bug fix: generic function dispatch function updating is now thread
2540 and interrupt safe (in the sense that the known issues have been
2542 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2543 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2544 * bug fix: asdf systems with dependencies to the SB-POSIX or
2545 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2546 * bug fix: interrupt safety of applicable method computation has been
2549 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2550 * new contrib: sb-cover, an experimental code coverage tool, is included
2551 as a contrib module.
2552 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2553 significantly faster.
2554 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2555 produce more efficient code on x86-64 if the compiler can determine
2556 that (+ INDEX <constant>) does not require a bounds check and FOO
2557 has an element type at least 8 bits wide.
2558 * enhancement: a new, experimental synchronous timeout facility is
2559 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2560 * enhancement: when a symbol name conflict error arises, the
2561 conflicting symbols are always printed with a package prefix.
2562 (thanks to Kevin Reid)
2563 * enhancement: stepping is now once again supported on the SPARC and
2564 MIPS platforms. (It is also now more likely to work on CheneyGC
2566 * enhancement: sb-sprof can now also track and report accurate call
2568 * bug fixes: the treatment of non-standard subclasses of
2569 SB-MOP:SPECIALIZER is more correct.
2570 * incompatible change: PURIFY no longer copies the data from the
2571 dynamic space into the static and read-only spaces on platforms
2572 that use the generational garbage collector
2573 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2575 * bug fix: GC race condition occasionally resulting in crashes with
2576 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2578 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2580 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2581 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2582 * bug fix: an asynchronous interrupt could previously leave the
2583 system running with GC inhibited.
2584 * bug fix: a DECLARE form evaluated at top-level now causes an error
2585 rather than silently (or verbosely) returning NIL.
2586 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2587 result in a error being signalled due to source form lookup errors.
2588 (reported by Peter Graves)
2590 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2591 * incompatible change: removed writer methods for host-ent-name,
2592 host-ent-addresses -- changing the values did not update the DNS
2594 * minor incompatible change: changed experimental JOIN-THREAD interface
2595 * documentation: the manual now lists reader and writer methods
2596 in class slot documentation sections. (thanks to Richard M Kreuter)
2597 * documentation: unwinding from asyncronous events has been
2598 documented as unsafe.
2599 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2600 in multithreaded application code.
2601 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2602 platforms. (thanks to James Anderson for the optimization hint)
2603 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2605 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2606 variants no longer cons.
2607 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2608 their NOT- variants no longer cons.
2609 * optimization: EQUAL hash tables no longer use SXHASH for objects
2610 of all data types, but instead use an EQL hash for types for which
2611 EQUAL is the same as EQL.
2612 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2613 are significantly faster.
2614 * optimization: new STRING-OUTPUT-STREAM implementation is much
2615 faster for large outputs and conses 30% less on average.
2616 * enhancement: XREF information is now collected for references made
2617 to global variables using SYMBOL-VALUE and a constant argument.
2618 * enhancement: SIGINT now causes a specific condition
2619 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2620 * bug fix: FILE-POSITION used to signal an error in some cases where
2621 ANSI requires it to return NIL.
2622 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2623 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2624 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2626 * bug fix: bad type declaration in the CLOS implementation has
2627 been fixed. (reported by James Anderson)
2628 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2629 (thanks to Lutz Euler)
2630 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2631 required by the CLHS. (reported by Samium Gromoff)
2632 * bug fix: dead unbound variable references now signal an error.
2633 (reported by Marco Monteiro)
2634 * bug fix: / with an unused value was being deleted in safe code.
2635 (thanks to Marco Monteiro and Kevin Reid)
2636 * bug fix: number of characters that can be written onto a single
2637 line in a file is unlimited.
2638 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2639 been fixed by inhibiting interrupts for when GC is disabled.
2640 * bug fix: some interrupt safety issues with GETHASH, (SETF
2641 GETHASH), CLRHASH and REMHASH have been fixed.
2642 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2643 specifier no longer causes infinite recursion.
2644 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2645 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2646 * bug fix: an &environment argument with the correct variable information
2647 is passed to macros that are expanded during byte compilation.
2648 (reported by Samium Gromoff)
2649 * bug fix: a logic error was causing the hash function for bignums to
2650 have excessive amounts of collisions. (reported by Faré Rideau)
2651 * bug fix: modifying the contents of an array could change the return
2652 value of SXHASH on that array, which is only allowed for strings
2653 and bit vectors. (bug introduced in 0.9.16)
2654 * improvement: the x86-64/darwin port now passes all tests (except
2655 for the debugger tests) but should still be considered
2656 experimental until this is fixed.
2657 * improvement: a style-warning is signaled for CASE (etc) clauses with
2658 duplicate keys. (thanks to Kevin Reid)
2659 * improvement: macos/x86 and macos/x86-64 now use mach exception
2660 handlers for dealing with illegal instructions (for trapping and
2661 error handling) and memory protection violations (for GC).
2663 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2664 * new platform: experimental support for x86-64/darwin (MacOS).
2665 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2666 and getnameinfo sockets functions are used instead of gethostbyaddr
2667 and gethostbyname, on platforms where the newer functions are available.
2668 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2670 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2671 don't print the startup banner, but behave as if --noinform was passed
2672 as a command line argument. (thanks to Kevin Reid)
2673 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2674 * optimization: code using alien values with undeclared types is much faster.
2675 * optimization: the compiler is now able to open code SEARCH in more cases.
2676 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2677 * bug fix: using standardized COMMON-LISP special variables as loop
2678 variables no longer signals bogus package lock violations. (reported
2680 * bug fix: declaring local loop variables to be of a range-limited type
2681 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2682 (reported by Andras Simon)
2683 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2684 bugs remain on x86-64.)
2685 * bug fix: the #= and ## reader macros now interact reasonably with
2686 funcallable instances.
2687 * bug fix: type-checks for function arguments were compiled using the
2688 compiler policy settings of the wrong lexical environment (in 1.0.2
2690 * bug fix: SHADOW accepts characters as string designators, as required
2691 by the spec (thanks to Eric Marsden)
2692 * bug fix: fixed GC safety issues when foreign functions are called with
2693 non-base strings as arguments
2694 * bug fix: more consistent error output for fatal-compiler-warnings, like
2696 * bug fix: functions with proper names were showing up as NIL in
2697 backtraces (reported by Edi Weitz, regression in 1.0.2)
2699 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2700 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2701 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2702 produce more efficient code on the x86 if the compiler can determine
2703 that (+ INDEX <constant>) does not require a bounds check and FOO
2704 has an element type at least 8 bits wide.
2705 * bug fix: references to undefined variables are handled the same way
2706 in toplevel forms as in the normal compiler
2707 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2709 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2710 (thanks to Jon Buller)
2711 * improvement: faster compilation times for complex functions
2712 * improvement: added readlink support to SB-POSIX (thanks to Richard
2715 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2716 * improvement: experimental support for mach exception handling on
2717 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2719 * improvement: support for GBK external format.
2720 (thanks to Chun Tian (binghe))
2721 * improvement: the debugger now displays variables that have been closed
2722 over, in code compiled with (DEBUG 2) or higher
2723 * improvement: support for executable cores on NetBSD (thanks to
2725 * new feature: added a RESTART-FRAME debugger command
2726 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2727 be used to provide an implementation for FILE-POSITION on Gray streams
2728 (thanks to Eric Marsden)
2729 * new feature: add syslog, openlog and closelog support to SB-POSIX
2730 (thanks to Richard Kreuter)
2731 * optimization: the function call overhead in code compiled with
2732 a high DEBUG optimization setting is significantly
2733 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2734 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2735 (thanks to Tony Martinez)
2736 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2737 evaluated once (reported by Kevin Reid)
2738 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2739 works again (thanks to Kilian Sprotte)
2740 * bug fix: an error is signaled for tagbodies with duplicate tags
2741 (thanks to Stephen Wilson)
2742 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2743 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2744 stack frames from alien callbacks.
2745 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2746 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2747 65k pages (thanks to David Woodhouse)
2748 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2750 changes in sbcl-1.0.1 relative to sbcl-1.0:
2751 * new platform: FreeBSD/x86-64, including support for threading.
2752 * new feature: the compiler stores cross-referencing information
2753 about function calls (who-calls), macroexpansion (who-macroexpands)
2754 and special variables (who-binds, who-sets, who-references) for code
2755 compiled with (< SPACE 3). This information is available through the
2756 sb-introspect contrib.
2757 * new feature: users may subclass SEQUENCE, and have instances of
2758 these classes interoperate with standard Common Lisp functions if
2759 a number of methods are defined. (This feature is experimental
2760 and the interface subject to change based on feedback from SBCL
2761 users and the general community)
2762 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2763 x86/x86-64, rather than the previous fixed depth of 8
2764 * improvement: another pthread back-end of mutex "pthread-futex".
2765 * bug fix: non-ascii command-line arguments are processed correctly
2766 (thanks to Yaroslav Kavenchuk)
2767 * bug fix: non-required arguments were not passed correctly when a method
2768 defined using DEFMETHOD was called from a mop-generated method using
2769 CALL-NEXT-METHOD (reported by Pascal Costanza)
2770 * bug fix: recursion is now permitted in accessors through
2771 SLOT-UNBOUND. (reported by Pascal Costanza)
2772 * bug fix: an error was signaled at startup if the HOME environment
2773 variable was defined, but had an empty value (reported by Peter Van Eynde)
2774 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2775 signal a PROGRAM-ERROR, not a BUG.
2776 * bug fix: SB-POSIX:READDIR works when built with large file support.
2777 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2779 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2780 for better automatic indentation support. (thanks to Matt Pillsbury)
2781 * optimization: loading generic functions no longer takes O(n^2) time,
2782 proportional to the amount of methods in the generic function
2783 (reported by Todd Sabin and Jeremy Brown)
2784 * optimization: the FIND and POSITION family of sequence functions
2785 are significantly faster on arrays whose element types have been
2787 * improvements to the Windows port:
2788 ** Intermittent heap corruption problems have been fixed. (thanks
2789 to Alastair Bridgewater)
2790 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2792 ** Lisp is able to unwind foreign exception frames from alien
2793 callbacks. (thanks to Alastair Bridgewater)
2795 changes in sbcl-1.0 relative to sbcl-0.9.18:
2796 * improvement: experimental support for threading on FreeBSD/x86.
2797 (thanks to NIIMI Satoshi)
2798 * improvement: runtime option --dynamic-space-size can be used
2799 to set the size of the dynamic space reserved on startup.
2800 * improvement: floating point modes in effect are now saved in
2801 core, and restored on startup.
2802 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2803 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2804 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2805 threads are not running after *SAVE-HOOKS* have run.
2806 * improvement: writes to CLOS instance slots are type-checked in code
2807 compiled with (SAFETY 3)
2808 * improvement: floating-point exception handling on FreeBSD (thanks to
2810 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2811 (thanks to Zach Beane)
2812 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2814 * improvement: added support for the Shift-JIS external format.
2815 (contributed by NIIMI Satoshi)
2816 * improvement: callbacks are supported on Linux/PPC. (thanks to
2818 * bug fix: compiler bug triggered by a (non-standard) VALUES
2819 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2820 * bug fix: file compiler no longer confuses validated and already
2821 dumped structurres. (reported by Kaersten Poeck)
2822 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2823 fill-pointer signals a type-error as required. (thanks to
2825 * bug fix: disassemly of funcallable instances works.
2826 * bug fix: single stepping on PPC.
2827 * bug fix: fix thread-safety problems in the type system (generally
2828 manifesting as nonsensical errors like "STRING is a bad type specifier
2829 for sequences" or "The value 1 is not of type FIXNUM")
2830 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2831 (reported by Josip Gracin)
2832 * bug fix: an error is signaled for attempts to displace arrays with
2833 incompatible element types (thanks to Mario Mommer)
2834 * bug fix: more correct handling of wide characters in debug info
2835 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2836 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2837 and don't cause extra consing
2838 * optimization: MAP and MAP-INTO are significantly faster on vectors
2839 whose elements types have been declared.
2840 * Improvements to SB-SPROF:
2841 ** Support for allocation profiling
2842 ** Reduced profiling overhead, especially for long profiling runs
2843 * Improvements to the Windows port:
2844 ** floating point exceptions are now reported correctly.
2845 ** stack exhaustion detection works partially.
2846 ** more accurate GET-INTERNAL-REAL-TIME.
2847 ** better RUN-PROGRAM behaviour in case of errors in the child
2849 ** PROBE-FILE now simplifies pathnames correctly.
2850 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2851 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2852 1st 1970 (although time timezone data will be unreliable).
2853 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2855 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2856 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2857 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2859 * bug fix: two potential GC deadlocks affecting threaded builds.
2860 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2861 returns T (reported by Anton Kazennikov)
2862 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2863 with non-variable places
2864 * bug fix: remove a race condition in the setting of
2865 funcallable-instance functions, this should make threaded CLOS
2866 code more stable against memory faults.
2867 * bug fix: corruption of specials when unbinding is interrupted by an
2868 asynchronous unwind (reported by Hannu Koivisto)
2869 * improvement: the debugger will now also display local variables that
2870 are only used once, for code compiled with a DEBUG optimization quality
2873 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2874 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2875 * incompatible change: External-format support for FFI calls. The
2876 SB-ALIEN:C-STRING no longer implies an ASCII
2877 external-format. Instead the string is subject to external-format
2878 conversion. Additionally return values of type SB-ALIEN:C-STRING
2879 are by default of type (SIMPLE-ARRAY CHARACTER), not
2880 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2881 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2882 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2883 * incompatible change: SB-EXT package no longer contains the
2884 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2885 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2887 * incompatible change: the single-stepper is no longer available
2888 on Alpha, Mips and Sparc platforms.
2889 * minor incompatible change: the direct superclasses of
2890 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2891 not (STANDARD-OBJECT FUNCTION). This makes the
2892 class-precedence-lists of GENERIC-FUNCTION and
2893 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2895 * minor incompatible change: the default stream external format on
2896 non-unicode SBCL is no longer detected from the locale, but is always
2898 * new feature: Add a version of evaluator that uses an interpreter instead
2899 of the compiler. EVAL still uses the compiler by default, to switch it
2900 to use the interpreter, set the value of the variable
2901 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2902 * minor incompatible change: the single-stepper REPL has been merged
2903 with the normal debugger (see the "Stepping" heading of the debugger help
2904 for more details). The debugger command STEP will no longer switch
2905 to the single-stepper REPL.
2906 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2907 for a type now works.
2908 * bug fix: loading of default sysinit file works. (thanks to Leonid
2910 * bug fix: better detection of circularities in the file-compiler.
2911 (reported by Marco Monteiro)
2912 * bug fix: the CL pathname functions now work with files that have
2913 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2914 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2915 systems with Unix98 pty semantics.
2916 * bug fix: ASDF-INSTALL will now work with bsd tar.
2917 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2919 * bug fix: timers expiring in dead threads no longer cause a
2920 type-error (reported by Paul "Nonny Mouse").
2921 * bug fix: thanks to more lightweight single-stepper instrumentation,
2922 code compiled with (DEBUG 3) will compile and execute significantly faster,
2923 and will have more accurate type-inferencing than before
2924 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2925 whose bindings are modified
2926 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2927 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2928 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2929 CL:SOFTWARE-VERSION with proper version
2931 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2932 * feature: implemented the READER-METHOD-CLASS and
2933 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2934 as specified by AMOP.
2935 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2937 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2938 (thanks to Lutz Euler)
2939 * optimization: hashing of general arrays and vectors has been
2940 improved. (reported by Any Fingerhut)
2941 * enhancement: SB-INTROSPECT is now able to find definitions of
2942 profiled functions. (thanks to Troels Henriksen)
2943 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2944 as well, allowing compiler-macros for SETF-functions to expand.
2945 * enhancement: step-instrumentation no longer wraps known
2946 single-value functions with multiple-value context, allowing
2947 better type inference.
2948 * fixed bug #337: use of MAKE-METHOD in method combination now works
2949 even in the presence of user-defined method classes. (reported by
2950 Bruno Haible and Pascal Costanza)
2951 * fixed bug #339(c): if there are applicable methods not part of any
2952 long-form method-combination group, call INVALID-METHOD-ERROR.
2953 (reported by Bruno Haible)
2954 * fixed bug #361: the :FUNCTION initarg in the protocol for
2955 initialization of methods can now be used to override
2956 internally-produced optimized functions. (reported by Bruno
2958 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2959 system-provided lambda expression no longer cause warnings about
2960 unbound #:|pv-table| symbols.
2961 * bug fix: improved the handling of type declarations and the
2962 detection of violations for keyword arguments with non-constant
2964 * bug fix: potentially erronous calls to PATHNAME and
2965 MERGE-PATHNAMES were being flushed in some cases.
2966 (reported by Richard Kreuter)
2967 * bug fix: compiled calls to TYPEP were mishandling obsolete
2968 instances. (reported by James Bielman and Attila Lendvai)
2969 * bug fix: format strings with ~> without matching ~< no longer
2970 trigger an AVER, but signal an understandable error instead.
2971 (reported by Antonio Martinez)
2972 * bug fix: specifying an output-file without a pathname-type for
2973 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2974 of input-file instead of "fasl". (reported by Robert Dodier)
2975 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2976 (reported by James Y Knight).
2977 * bug fix: compiler-macros-function did not consider the environment
2978 argument for shadowing by local functions.
2979 * bug fix: compiler-macros expansion was inhibited by local INLINE
2981 * bug fix: inline expansions of known functions were subject to
2982 step-instrumentation in high debug policies, leading to problems
2983 with type-inference.
2984 * bug fix: compiler failed to differentiate between different CONS
2985 types in some cases.
2986 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2987 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2988 * bug fix: #368: incorrect use of expressed vs. upgraded array
2990 * bug fix: #306a: more precise unions of array types.
2991 * thread-safety improvements:
2992 ** CONDITION-WAIT could return early on Linux, if the thread was
2993 interrupted and subsequently continued with SIGCONT.
2994 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2996 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2997 * added support for the ucs-2 external format. (contributed by Ivan
2999 * minor incompatible change: pretty printing of objects of type
3000 (cons symbol) is, in the default pprint-dispatch-table, now
3001 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
3003 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
3004 called later in a class's lifetime, possibly as late as when the
3005 first instance of the class is created. Previously,
3006 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
3007 class became finalizeable.
3008 * fixed bug: FILE-POSITION sometimes returned inconsistent results
3009 for multibyte external-format streams. (thanks to "vbzoli")
3010 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
3011 with :ALLOCATION :CLASS inherited from superclasses of the
3013 * fixed bug: anonymous classes can now be created using the :NAME
3014 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
3015 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
3016 * fixed bug: core-files saved with :EXECUTABLE T can again be
3017 executed when SBCL_HOME isn't set. (reported by James Knight)
3018 * fixed bug: toplevel LOCALLY forms with declarations could
3019 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
3020 * fixed bug: printing from several different threads using different
3021 values of *print-case* could cause invalid output, due to
3022 some internal special variables of the printer not being bound
3023 thread-locally (reported by Max Mikhanosha)
3024 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
3025 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
3026 (reported by Pascal Costanza)
3027 * fixed bug: FINALIZE-INHERITANCE is called from
3028 REINITIALIZE-INSTANCE on classes when the class has previously
3029 been finalized, as required by AMOP.
3030 * minor code generation optimizations:
3031 ** better register allocation in CLOS dispatching functions
3032 ** overflow detection when coercing signed bytes to fixnums on x86-64
3033 ** is now implemented with one IMUL instruction instead of three shifts
3034 ** more efficient bit-vector access on x86 and x86-64
3035 ** more efficient access to raw structure slots on x86 and x86-64
3036 * fixed some bugs revealed by Paul Dietz' test suite:
3037 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
3038 return its argument.
3040 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3041 * feature: thread support on Solaris/x86, and experimental thread support
3043 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
3045 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
3046 default method for SLOT-UNBOUND.
3047 * minor incompatible change: prevent the user from specializing the
3048 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
3049 somewhat counter to the intent of the protocol, I (CSR) think, and
3050 additionally it just doesn't work in SBCL as currently
3051 implemented, thanks to optimizations (that are always valid for
3052 the other three SLOT-VALUEish functions, but not for the setter).
3053 * minor incompatible change: the :SB-LDB feature is now enabled by
3054 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
3055 the low-level debugger.
3056 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
3057 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
3058 down to an SB-SYS:FD-STREAM, allowing direct communication in
3059 more cases. Temporary files and pipes are still used as a fallback
3061 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
3062 on the non-reentrant C functions localtime(3) and gmtime(3).
3063 * bug fix: global optimization policy was not visible in LOCALLY and
3065 * bug fix: class objects can be used as specializers in methods.
3066 (reported by Pascal Costanza)
3067 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
3068 with a type error. (reported by blitz_ on #lisp)
3069 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
3070 failed with a type error. (reported by Pascal Bourguignon)
3071 * bug fix: merging pathnames against defaults with :DIRECTORY
3072 starting with '(:RELATIVE :BACK) should preserve the :BACK.
3073 (reported by James Y Knight)
3074 * bug fix: saving large (>2GB) cores on x86-64 now works
3075 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3076 constant index and a (simple-array (signed-byte 32)) array
3077 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3078 error (patch by Robert J. Macomber)
3079 * feature: TIME now displays the amount of run-time spent in GC
3080 * bug fix: The debugger now does a better job of respecting
3081 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3082 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3083 workaround for bug 403.)
3084 * bug fix: floating point exception handling now works on FreeBSD
3085 (thanks to NIIMI Satoshi)
3086 * fixed some bugs revealed by Paul Dietz' test suite:
3087 ** MISC.641: LET-conversion were not supposed to work in late
3089 * improvements to the Win32/x86 port:
3090 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3091 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3093 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3094 * new feature: source path information is generated for macro-expansion
3095 errors for use in IDE's like Slime (thanks to Helmut Eller)
3096 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3097 * bug fix: compiler does not loop forever on an invalid type in
3099 * improvement: compilation of most CLOS applications is significantly
3101 * optimization: added a limited bytecode compiler for simple toplevel
3102 forms, speeding up compilation and FASL loading
3103 * bug fix: the statistical profiler now properly distinguishes anonymous
3106 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3107 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3108 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3109 into subclasses of the finalized class. Now user calls to
3110 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3111 system return before any subclasses are finalized.
3112 * minor incompatible change: The reader no longer ignores errors
3113 regarding non-existent packages in #+ and #- feature tests.
3114 * new feature: command line options --no-sysinit, --no-userinit to
3115 inhibit loading the corresponding init files
3116 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3117 for sending data through UDP sockets (thanks to François-René Rideau)
3118 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3119 error is signalled instead (thanks to François-René Rideau)
3120 * minor incompatible change: Error signalling behaviour of lexical
3121 operations violating package locks has changed slightly. Refer to
3122 documentation on package locks for details.
3123 * enhancement: EVAL can process IF-expressions without resorting to the
3125 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3126 constant-folded properly due to missing out-of-line functions.
3127 (reported by Mika Pihlajamäki)
3128 * bug fix: LISTEN sometimes returned T even in cases where no data was
3129 immediately available from the stream
3130 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3131 were reversed. (reported by Levente Mészáros)
3132 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3133 when given a vector displaced to an adjustable array. (reported
3135 * bug fix: derivation of float boundaries from numbers outside the
3136 appropriate float range (reported by John Wiseman)
3137 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3139 * bug fix: precomputing cache entries for generic functions with
3140 some subclasses of specializers as yet invalid does not attempt to
3141 fill a cache line with a negative offset. (reported by Levente
3143 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3144 allow condition class objects as arguments to DOCUMENTATION and
3145 (SETF DOCUMENTATION); only find and set documentation for
3146 structure names for the STRUCTURE doc-type. (suggested by Gary
3148 * improvements to the Win32/x86 port:
3149 ** (user-homedir-pathname) and default initialization file
3150 locations now know about the user's "Documents and Settings"
3151 directory (thanks to Yaroslav Kavenchuk)
3152 ** run-program is implemented (thanks to Mike Thomas)
3153 ** sockets support (thanks to Timothy Ritchey)
3154 ** better backtrace support (thanks to Alastair Bridgewater)
3155 ** sb-grovel supported
3156 ** asdf-install and sb-posix work somewhat
3157 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3158 * improvements to the Solaris/x86 port:
3159 ** works on Solaris 11/Solaris Express
3160 ** floating-point exception handling support
3161 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3162 * fixed some bugs revealed by Paul Dietz' test suite:
3163 ** REMOVE-METHOD returns its generic function argument even when
3164 the method is not one of the generic functions' methods.
3165 ** objects declared as MEMBER types can be admissible arguments to
3166 structure accessors.
3167 ** printing characters should simply be printed by the FORMAT ~:C
3169 ** compiler failure when compiling functions with hairy constant
3170 defaults for optional parameters.
3171 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3172 function, which is already optimized.
3174 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3175 * new platform: experimental support for SBCL x86/Darwin, including
3176 MacOS X 10.4.5 on Intel.
3177 * new feature: Unicode character names are now known to the system
3178 (through CHAR-NAME and NAME-CHAR).
3179 * new feature: the filesystem location of SBCL's core file is
3180 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3181 * minor incompatible change: the contrib modules SB-POSIX and
3182 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3183 this change is to make it easier to distribute
3184 location-independent binaries.
3185 * bug fix: as implied by AMOP, standardized classes no longer have
3186 slots named by external symbols of public packages. (reported by
3188 * optimization: calling functions via constant symbols -- as in
3189 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3190 via the function object as in (FUNCALL #'FOO).
3191 * optimization: on x86 and x86-64, the calling convention for the
3192 case of dealing with an unknown number of values has been altered
3193 to be friendlier to the prediction heuristics implemented,
3194 particularly with reference to CALL and RET pairing. (thanks to
3195 Alastair Bridgewater)
3196 * optimization: on x86, the code for access to thread-local symbol
3197 values and binding/unbinding of thread-local symbols is smaller.
3198 (thanks to Alastair Bridgewater)
3199 * enhancement: CONSTANTP is now able to determine constantness of
3200 more complex forms, including calls to constant-foldable standardized
3201 functions and some special forms beyond QUOTE.
3202 * fixed bug: occasional GC crashes on Solaris/x86
3203 * optimization: x86-64 supports stack allocation of results of simple
3204 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3205 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3206 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3207 (thanks to James Knight)
3208 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3209 by the standard (thanks to Stephen Compall)
3211 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3212 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3213 be used for bundling the runtime and the core file into one
3214 executable binary. This feature is not currently supported on all SBCL
3215 platforms. (thanks to James Bielman and NIIMI Satoshi)
3216 * new feature: a generational or ephemeral garbage collector is now
3217 the default on the PowerPC platform (both Linux and Darwin). The
3218 old Cheney (stop and copy) collector is a build-time option.
3219 (thanks to Cyrus Harmon, after Raymond Toy)
3220 * minor incompatible change: the method by which SBCL finds its
3221 contributed modules has changed; it no longer relies on symbolic
3222 links from an $SBCL_HOME/systems directory, but searches directly
3223 in the subdirectories of $SBCL_HOME.
3224 * enhancement: the dynamic heap size on the Linux/PPC platform is
3225 markedly larger, even using the older Cheney garbage collector.
3226 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3227 certain complicated string types. (reported by Gary King)
3228 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3229 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3230 * fixed bug: DOCUMENTATION on structures no longer signals an
3231 error if no structure type of the right name exists. (reported by
3233 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3234 applicable non-standard primary or :AROUND method on
3235 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3236 no longer cause unbound variable errors. (reported by Kevin Reid)
3237 * fixed bug: metacircle resolution in cases where methods have slots
3238 added before the slots from STANDARD-METHOD. (reported by Jean
3240 * fixed bug: the Power PC assembly code for calling into lisp
3241 sometimes computed its return address wrongly (depending on the
3242 15th bit of the address, fixed at link time). This used to
3243 manifest itself in a segmentation violation while building PCL.
3244 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3245 many others over the years)
3246 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3247 the stack pointer (treated as a signed integer) is negative.
3248 (thanks to Peter van Eynde)
3250 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3251 * new platform: experimental support for the Windows operating
3252 system has been added. (thanks to Alastair Bridgewater)
3253 * fixed several bugs in and robustified the PPC FFI (including
3254 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
3255 * bug fix: allow non-simple string symbol names (reported by Paul
3257 * bug fix: interrupt handling on NetBSD (thanks to Richard M
3259 * bug fix: saving a core corrupted callbacks on x86/x86-64
3260 * bug fix: closed a loophole in metacircularity detection and
3261 grounding in the PCL implementation of CLOS.
3262 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
3263 (reported by tomppa on #lisp)
3264 * bug fix: clear the direction flag on Lisp -> C transitions, as
3265 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3266 (reported by Andrej Grozin and Hendrik Maryns)
3267 * optimization: major improvements to GC efficiency on GENCGC platforms
3268 * optimization: faster implementation of EQUAL
3269 * optimization: emit more efficient opcodes for some common
3270 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3271 * optimization: several other minor code-generation improvements on x86-64
3272 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3274 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3275 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3276 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3277 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3278 by ANSI as a generic function, and for consistency (SETF
3279 GENERIC-FUNCTION-NAME) is treated likewise.
3280 * fixed bug #233.b: make constraint propagation notice when a variable
3281 value is changed after it is referenced but before it is used
3282 * fixed bug #296: no more arbitrary behaviour from filenames with
3283 odd characters as --load arguments. (reported by Adam Warner)
3284 * fixed bug #390: :CHARACTER-SET pathname components now work as
3285 expected. (reported by Tim Daly Jr)
3286 * fixed bug #391: complicated :TYPE intersections in slot
3287 definitions no longer cause an error in PCL internals.
3288 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3289 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3290 returning the number of octets which would be written to the
3291 file-stream. (thanks to Robert J. Macomber)
3292 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3293 arguments to the internal stream functions. (thanks to David
3295 * bug fix: stack exhaustion is now handled on the x86/SunOS
3296 platform. (thanks to Daisuke Homma)
3297 * bug fix: more accurate ROOM results on GENCGC platforms
3298 * optimization: improved type inference for arithmetic-for
3299 index variables in LOOP
3300 * optimization: faster floating-point SQRT on x86-64
3301 * fixed some bugs revealed by Paul Dietz' test suite:
3302 ** DOCUMENTATION returns NIL instead of "" for method combinations
3303 that don't have a docstring
3305 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3306 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3307 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3308 therefore are not customizeable by user code (as seems to be at
3309 least permitted and maybe required by AMOP). As a consolation,
3310 however, the SBCL implementation of these functions now calls
3311 REINITIALIZE-INSTANCE as specified by AMOP.
3312 * bug fix: slot-definition documentation is propagated as per ANSI
3313 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3314 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3315 argument, as do eslotd initialization methods. (from Pascal
3316 Costanza's "Closer" project)
3317 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3318 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3320 * bug fix: it is now possible to have more than one subclass of
3321 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3322 (reported by Bruno Haible, Pascal Costanza and others)
3323 * bug fix: the dependent update protocol now works for generic
3324 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3325 and Pascal Costanza)
3326 * bug fix: condition-class instances corresponding to
3327 DEFINE-CONDITION forms are now created eagerly. (reported by
3328 Kalle Olavi Niemitalo on comp.lang.lisp)
3329 * bug fix: floating point printing is more accurate in some
3330 circumstances. (thanks to Simon Alexander)
3331 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3332 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3333 * bug fix: callbacks on OS X now preserve stack-alignment.
3334 (thanks to Cyrus Harmon)
3335 * enhancement: the x86-64 disassembler is much better at
3336 disassembling SSE instructions. (thanks to Lutz Euler)
3337 * enhancement: CHECK-TYPE on a variable now allows type-inference
3338 (thanks to Vincent Arkesteijn)
3339 * optimization: improved performance of EUC-JP external format.
3340 (thanks to NIIMI Satoshi)
3341 * optimization: performance improvements to IO on file streams of
3342 :ELEMENT-TYPE CHARACTER
3343 * optimization: much faster memory allocation on x86-64
3344 * optimization: faster garbage collections (latency and throughput)
3346 * optimization: faster bignum subtraction and division on x86 and x86-64
3347 (thanks to Lutz Euler)
3348 * optimization: more accurate type-inference for loops that use a
3349 floating point index variable or a negative step.
3351 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3352 * bug fix: add a workaround to SBCL looping infinitely at startup on
3353 Linux kernels with apparently buggy implementations of personality().
3354 (thanks to Svein Ove Aas)
3355 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3356 (thanks to David Lichteblau)
3357 * bug fix: local bindings shadow global symbol macros for
3358 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3359 * optimization: non-open coded uses of numeric comparison operators
3360 (e.g. >) no longer cons when called with more than one parameter
3361 on platforms supporting dynamic-extent allocation.
3362 * enhancement: saving cores with foreign code loaded is now supported
3363 on MIPS/Linux in addition to the previously supported platforms.
3364 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3365 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3366 * bug fix: division by zero in sb-sprof when no samples were collected
3367 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3368 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3369 (thanks to Alexander Kjeldaas)
3370 * new feature: ignoring the return values of destructive functions
3371 like NREVERSE signals a compile-time style-warning.
3372 (thanks to Kevin Reid)
3373 * new feature: the alignment of alien structure fields can be
3374 explicitly specified. (thanks to Cyrus Harmon)
3375 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3376 and dump core on SIGQUIT
3378 ** incompatible change: threads do not inherit values of specials
3379 from their parents (see manual)
3380 ** bug fix: threads stacks belonging to dead threads are freed by the
3381 next exiting thread, no need to gc to collect thread stacks anymore
3382 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3383 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3384 ** bug fix: dynamic variable and thread start related gc lossage
3385 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3387 * fixed some bugs revealed by Paul Dietz' test suite:
3388 ** SUBTYPEP is slightly more accurate on heinously complicated
3389 CONS types where some of the members have uncertain (in the
3390 NIL, NIL sense) type relationships to each other.
3392 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3393 no longer purified unless :PURIFY T is explicitly specified.
3394 ** Non-purified cores are significantly smaller than before
3396 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3397 * new feature: timers based on Zach Beane's excellent timer package
3398 * added support for the following external formats: koi8-u,
3399 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3400 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3401 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3402 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3403 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3404 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3405 * incompatible change: a threaded SBCL will no longer revert to
3406 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3407 * bug fix: interrupts are disabled until startup is complete; no
3408 more sigsegvs when receiving a signal to soon
3409 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3411 * bug fix: add a workaround for the memory randomization features in
3412 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3413 workaround will only be in effect on systems with the proc filesystem
3415 * bug fix: printing objects of type HASH-TABLE signals a
3416 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3418 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3419 have been running for over 50 days. (reported by Gilbert Baumann)
3420 * bug fix: the logic for getting names of functions gets less
3421 confused when confronded with alternate-metaclass
3422 funcallable-instances. (reported by Cyrus Harmon)
3423 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3424 consistent, even on internal alternate-metaclass objects.
3425 * bug fix: flush closure information collected by physical
3426 environment analysis prepass before the main pass. (bug reported
3428 * bug fix: compiler pack phase does not modify a hashtable, which is
3429 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3430 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3431 may be expanded. (reported by Alexander <malishev> on c.l.l)
3432 * bug fix: no more style-warnings when compiling code using LAST
3433 under high-SPEED low-SPACE settings. (reported by David Wallin
3435 * fixed some incompatibilities between SBCL's MOP and the MOP
3437 ** the METAOBJECT class is now implemented;
3438 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3439 STANDARD-OBJECT, as required;
3440 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3441 now compatible (as required by VALIDATE-SUPERCLASS); there
3442 remains a consistency requirement over the presence or absence
3443 of the FUNCTION class in the superclass list of finalized
3444 classes; see the manual for more details;
3445 ** the :AROUND method for COMPUTE-SLOTS on
3446 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3447 requested slot ordering.
3449 ** bug fix: parent thread now can be gc'ed even with a live
3451 ** bug fix: binding a special with PROGV to no value is not
3452 the same as that symbol not having been bound (thanks to
3454 ** bug fix: binding specials is thread safe (thanks to
3456 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3457 and SB-SPROF do not die with 'no handler for signal XX in
3458 interrupt_handle_now(..)' anymore
3459 ** bug fix: WITH-TIMEOUT works with multiple running threads
3460 * fixed some bugs revealed by Paul Dietz' test suite:
3461 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3462 the :method-class keyword argument.
3464 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3465 * new port: the Solaris operating system on x86 processors is now
3466 mostly supported, though some rough edges in the environment
3467 remain. (thanks to Daisuke Homma)
3468 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3469 space for its heap. (thanks to Thiemo Seufer)
3470 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3471 closures. (thanks to Thiemo Seufer)
3472 * minor incompatible change: eof selects abort in the debugger.
3473 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3474 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3476 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3477 deprecated, and will go away in a future revision of SBCL.
3478 * minor incompatible change: GC-ON and GC-OFF are no longer
3479 implemented with a counter, it does not matter how many times gc
3480 is switched on or off
3481 * bug fix: discriminating functions for generic function classes
3482 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3483 make invalid assumptions about method precedence order. (reported
3485 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3486 platforms. (thanks to Thiemo Seufer)
3487 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3488 * bug fix: correct pathname printing with printer escaping is on.
3489 (thanks to Kevin Reid)
3490 * bug fix: complex VOP definitions in "user-space" no longer trigger
3491 package locks. (reported by Zach Beane)
3492 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3493 for funcallable-instance functions, and is no different from
3495 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3496 characters in the current readtable. (reported by Nicholas Neuss)
3497 * bug fix: SUBTYPEP on various CONS types returns more a more
3498 accurate acknowledgment of its certainty.
3499 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3500 lists in some cases. This partially fixes bug 384.
3501 * flush all standard streams before prompting in the REPL and the
3503 * bug fix: signal handling and triggering gc do not conflict
3504 directly anymore, in particular a high frequency sb-sprof does
3505 not prevent gc from running
3506 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3507 approximation for timezone and DST information between the
3508 universal time epoch and the smallest negative 32-bit time_t.
3509 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3510 year 1899 so long as the encoded time is non-negative.
3511 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3512 the correct answer for non-constant rotate amounts when performing
3513 an inline 32-bit rotation.
3515 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3516 there is only one thread in the session
3517 ** bug fix: memory leak for streams created in one thread and
3518 written to in another
3519 ** bug fix: lockup when compiled with gcc4
3520 ** bug fix: race that allows the gc to be triggered when gc is
3522 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3523 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3525 ** bug fix: finished threads are gc'ed properly
3526 * fixed some bugs revealed by Paul Dietz' test suite:
3527 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3528 has arguments with a different set of applicable methods from
3529 the orignal arguments.
3530 ** The type error thrown by MAP now has a correct expected-type
3532 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3533 name a compiled function.
3534 ** Three MISC tests where a large bignum was improperly coerced to
3535 a float that couldn't represent that bignum during type
3536 derivation were fixed.
3537 ** SUBTYPEP can now handle types involving the negation of a
3538 list-form FUNCTION type.
3539 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3540 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3541 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3543 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3544 * New feature: Experimental support for bivalent streams: streams
3545 opened with :element-type :default now allow character and binary
3546 (unsigned-byte 8) I/O
3547 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3548 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3550 * bug fix: no more highly sporadic "couldn't check whether ~S is
3551 readable" when reading a stream and an interrupt hits in the middle
3552 of a select system call
3553 * compiler better recognizes complex arrays (reported by Eduardo
3555 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3556 for variables on SBCL built with linkage-tables. (reported by Luis
3558 * various error reporting improvements.
3559 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3560 (Thanks to Thiemo Seufer)
3561 * bug fix: nested reader invokations work correctly
3562 * bug fix: it is possible to have simultaneous references to foreign
3563 code and foreign data with the same name.
3565 ** added x86-64 support
3566 ** incompatible change: the threading api now works with thread
3567 objects instead of thread ids
3568 ** bug fix: threads are protected from signals and interruption when
3569 starting up or going down
3570 ** bug fix: a race where an exiting thread could lose its stack to gc
3571 ** bug fix: don't halt on infinite error in threads if possible
3572 ** fixed numerous gc deadlocks introduced in the pthread merge
3573 ** bug fix: fixed thread safety issues in read and print
3574 ** bug fix: debugger doesn't hang on session lock if interrupted at
3575 an inappropriate moment
3576 ** bug fix: run-program is now thread safe(r)
3577 ** bug fix: inner with-recursive-lock no longer releases the mutex
3578 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3579 * fixed some bugs revealed by Paul Dietz' test suite:
3580 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3581 EXPECTED-TYPE slots filled.
3582 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3584 ** MAKE-CONDITION accepts classes as type-designators.
3585 ** COMPILE may never return NIL.
3586 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3587 range before calling Unix time functions
3589 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3590 * numerous signal handling fixes to increase stability
3591 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3592 * minor incompatible change: we now correctly canonize default
3593 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3594 as per the MOP, rather than the historical (INITARG INITFUNCTION
3595 INITFORM). (reported by Bruno Haible)
3596 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3597 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3598 for more information.
3599 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3600 pathname is a directory pathname.
3601 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3602 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3604 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3605 :METACLASS argument in addition to a class name. (reported by
3606 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3607 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3608 (reported by Bruno Haible; patch from Gerd Moellmann)
3609 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3611 * bug fix: more cleanups to the floating point exception handling on
3612 x86-64 (thanks to James Knight)
3613 * bug fix: the compiler does not try to constant fold calls of
3614 COERCE and BIT-* functions when they return freshly constructed
3615 objects. (reported by Nikodemus Siivola and Paul Dietz)
3616 * optimization: improved the MIPS versions of generic (in the
3617 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3618 * optimization: direct conversion of (unsigned-byte 32) to floats on
3619 the PowerPC platform.
3620 * optimization: structure instances with raw slots now use less
3621 memory, and probably show better memory locality. (thanks to
3623 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3624 are treated as requests for stack allocation on the x86-64,
3625 Alpha-32, PPC and SPARC platforms.
3626 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3627 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3628 (thanks to Tony Martinez)
3630 ** gcing a dead thread can no longer lead to lockups
3631 ** threads block signals until they are set up properly
3632 ** errno is no longer shared by threads
3633 ** interrupt-thread restores the eflags register on x86
3634 ** fixed some lockups due to gc/thread interaction
3635 * fixed some bugs revealed by Paul Dietz' test suite:
3636 ** invalid dotted lists no longer raise a read error when
3637 *READ-SUPPRESS* is T
3638 ** signal an error if a symbol that names a declaration is used
3639 as the name of a type, or vice versa
3640 ** allow using the (declare (typespec var*)) abbreviation for
3641 (declare (type typespec var*)) with all type specifiers
3642 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3643 ** always return NIL from PPRINT-POP when OBJECT is NIL
3644 ** don't signal errors when pretty-printing malformed LABELS,
3645 FLET or MACROLET forms
3646 ** declarations in a DOLIST body are also in scope for the
3648 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3650 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3653 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3654 * fixed cross-compiler leakages that prevented building a 32-bit
3655 target with a 64-bit host compiler.
3656 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3657 opened with :IF-EXISTS :OVERWRITE.
3658 * fixed bug 281: error for an invalid qualifier in a short-form method
3659 combination method is not signalled until the faulty method is called.
3660 * bug fix: iteration variable type inferrer failed to deal with open
3661 intervals. (reported by Alan Shields)
3662 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3663 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3664 or more runtime options were provided to the sbcl binary.
3665 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3666 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3667 * optimization: there's now a fast-path for fixnum arguments in the
3668 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3669 * optimization: the code generated on x86-64 is more compact thanks
3670 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3671 * bug fix: floating-point exception handling now partly works on
3672 x86-64. (Thanks to James Knight)
3673 * improvement to the MIPS backend from Thiemo Seufer: C-style
3674 64-bit long long arguments and return values to alien functions
3676 * fixed some bugs revealed by Paul Dietz' test suite:
3677 ** the type-error signalled from WARN has a filled-in DATUM slot.
3678 ** the type-error required when a stream is not associated with
3679 a file has the stream as its datum.
3680 ** type-errors on single-floats on x86-64 no longer have
3681 :INVALID-OBJECT as the datum
3682 ** the type-errors signalled for invalid function names now have
3683 a correct expected type
3684 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3685 for structures defined with a :TYPE. Documentation strings for
3686 typed structures are no longer immediately discarded
3687 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3688 broadcast streams and synonym streams. FILE-LENGTH now also works
3689 on broadcast streams.
3691 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3692 * incompatible change: the --noprogrammer option, deprecated since
3693 version 0.7.5, has been removed. Please use the equivalent
3694 --disable-debugger option instead.
3695 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3697 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3698 inoperational for a while now) has been completely removed.
3699 * null lexical environments are now printed as #<NULL-LEXENV>,
3700 significantly reducing the amount of clutter in typical backtraces.
3701 * documentation on weak pointers, finalization, and after GC hooks
3702 has been added to the manual.
3703 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3704 as other specialized array types, is much faster. SUBSEQ and
3705 COPY-SEQ on such arrays have also been sped up.
3706 * optimization: EQL is now more efficient when at least other argument
3707 is known to be of type (OR FIXNUM (NOT NUMBER)).
3708 * fixed bug: the runtime is now less vulnerable to changes in the
3709 size of the SBCL object on OS X, and virtual memory is reserved for
3710 all spaces that need to be at a fixed address.
3711 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3712 * fixed bug: finalizers and after GC hooks that cause consing are now
3714 * fixed bug: compiler error messages and summaries are now printed to
3715 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3716 * fixed inference of the upper bound of an iteration variable.
3717 (reported by Rajat Datta).
3718 * fixed bug 211e: calling local functions with duplicated constant
3719 keyword argument no longer causes a bogus style warning about an
3721 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3722 ftype declaration to be disregarded. (reported by Dave Roberts)
3723 * fixed bug 373: caused by erronous compilation of references to alien
3724 variables in the runtime on ppc/darwin.
3725 * fixed bug 376: CONJUGATE type deriver.
3726 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3727 (reported by Baughn on #lisp)
3728 * a cross-compiler bug on non-x86 platforms has been identified and
3729 fixed. (thanks to Bruno Haible)
3730 * improvements to the MIPS runtime code for increased stability.
3731 (thanks to Thiemo Seufer)
3732 * increased the maximimum compact environment size to allow
3733 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3734 * partial workaround for bug 135: don't name the function we're
3735 calling for hairy cases of EVAL, so as not to accumulate one environment
3736 entry per call to EVAL. (reported by Kevin Reid)
3737 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3738 * optimization: type testing for non-vector arrays should be faster.
3739 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3741 * bug fix: setting 31st element of a bit vector to zero did not work
3743 * bug fix: redefining a class definition which failed due to a
3744 previous accessor / function clash now works (but see BUGS entry
3745 #380 for more problems in this area). (thanks to Zach Beane)
3746 * the long form of DEFINE-METHOD-COMBINATION disables method group
3747 checking when given a single method group with pattern *. (thanks
3749 * on x86 compiler supports stack allocation of results of simple
3750 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3751 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3752 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3753 * fixed some bugs related to Unicode integration:
3754 ** the restarts for recovering from input and output encoding
3755 errors only appear when there is in fact such an error to
3757 * fixed some bugs revealed by Paul Dietz' test suite:
3758 ** MISC.549 and similar: late transformation of unsafe type
3759 assertions into derived types caused unexpected code
3761 ** SCALE-FLOAT type deriver is less wrong.
3762 ** type derivers for EXP, LOG and similar functions compute result
3763 types for complex arguments better.
3764 ** (MISC.563) CONJUGATE type deriver works for very restricted
3766 ** out-of-line type testers for character strings are available.
3767 ** EQUAL compiler transform understands specialness of objects
3769 ** accessing double-floats stored on the stack now works on x86-64.
3770 ** debugger internals could sometimes create invalid lispobjs,
3771 resulting in GC crashes.
3772 ** MISC.548: type check weakening can convert required type into
3774 ** initialization forms for bindings are not in scope of free special
3777 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3778 * incompatible change: thread support for non-NPTL systems has
3779 been removed - locking is buggy and unreliable. A threaded
3780 SBCL build will now warn at startup and refuse to create
3781 new threads, unless futex support is detected in the kernel
3782 * incompatible change: the top level REPL now has only an ABORT
3783 restart associated with it, not TOPLEVEL and ABORT as it used to.
3784 TOP and TOPLEVEL are now available as debugger commands for
3785 returning to the top level.
3786 * incompatible change: forms evaluated in the REPL now use the
3787 global optimization policy.
3788 * incompatible change: user- and system-initialization files are
3789 no longer processed with LOAD, but by READ and EVAL; hence the
3790 global optimization policy, startup package, readtable, etc,
3792 * The .fasl file format number has been incremented because of
3793 various incompatible changes.
3794 * internal entry point details and argument counts no longer appear
3795 in backtraces unless explicitly requested by setting
3796 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3797 * built-in and standard functions no longer have names like "top
3798 level local call to FOO".
3799 * fixed bug 32: functions defined in non-null lexical environments
3800 now have more legible printed representation
3801 * fixed bug 33: functions defined in non-null lexical environemnts
3802 are now more amenable to inspection by INSPECT.
3803 * workaround for bug 354: XEPs no longer appear in backtraces unless
3804 explicitly requested.
3805 * fixed bug: receiving the signal which results from attempting to
3806 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3807 SIGBUS on other *BSDs) on architectures where the C stack is also
3808 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3809 to debugger confusion or wild instability. (reported by Cheuksan
3811 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3812 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3813 (reported by Lutz Euler)
3814 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3815 compiled code. (reported by Paul Dietz)
3816 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3817 specialized parameter to a method to something that is not TYPEP
3818 the specializer is now possible.
3819 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3820 face of package deletion.
3821 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3822 pathname. (reported by David Tolpin on c.l.l)
3823 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3824 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3825 STRING-STREAM and FILE-STREAM, respectively.
3826 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3827 than previously; in addition, its test suite is now run on build.
3828 (thanks to Luke Gorrie)
3829 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3830 * optimization: added a immediate representation for single-floats
3832 * fixed some bugs revealed by Paul Dietz' test suite:
3833 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3834 ** attempting to create a package with a colliding nickname causes
3835 correctable errors to be signalled.
3836 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3837 ** several x86-64 backend bugs related to sign-extension of immediate
3840 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3841 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3842 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3844 * fixed loading of multiply forward-referenced layouts.
3845 (thanks to Cheuksan Wang)
3846 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3847 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3848 (see COMPILE-FILE documentation for details of :PRINT option)
3849 * fixed bugs 19 and 317: fixed-format floating point printing is
3850 more accurate. This also fixes a bug reported by Adam Warner
3851 related to the ~@F format directive.
3852 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3854 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3855 dispatch table if the from-char is a dispatch macro character.
3856 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3857 by the wordsize no longer ignore the last word. (reported by Lutz
3859 * fixed bug in type checking of dynamic-extent variables. (reported
3861 * optimization: sequence traversal functions use their freedom to
3862 coerce function designators to functions.
3863 * optimization: code with many calls to CLOS methods specialized on
3864 CLOS classes has had redundant type checks removed.
3865 * optimization: added declarations to speed up operations that access
3866 the internal character database (for example STRING-UPCASE)
3867 * optimization: comparison operations between floats and sufficiently small
3868 fixnums no longer create extra rationals
3869 * fixed some bugs related to Unicode integration:
3870 ** portions of multibyte characters at the end of buffers for
3871 character-based file input are correctly transferred to the
3872 start of the buffer at the next read.
3873 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3874 passing it through to OPEN.
3875 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3876 argument given to internal calls to OPEN.
3877 ** the built-in comment readers (introduced by character sequences
3878 ";" and "#|") are more forgiving to encoding errors; they will
3879 STYLE-WARN and then attempt to resync the stream at a character
3880 boundary. (thanks to Teemu Kalvas)
3881 * fixed some bugs in the x86-64 port:
3882 ** Negative short int return values from c-calls are sign-extended
3884 ** The stack is aligned to 16-bytes for c-calls, as required by
3885 the ABI. (thanks to Cheuksan Wang)
3886 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3887 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3888 for enums. (thanks to Vincent Arkesteijn)
3889 ** Multiple small optimizations and bugfixes for floating point
3891 * fixed some bugs revealed by Paul Dietz' test suite:
3892 ** Space, Tab, Linefeed, Return and Page have the invalid
3893 secondary constituent character trait.
3894 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3896 ** WITH-INPUT-FROM-STRING should only update the index place on
3898 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3899 works more reliably.
3900 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3901 with one-dimensional arrays with fill pointers.
3902 ** TYPE-OF failed on a complex with an integer realpart and a
3904 ** compiler failure during type inference for the code of form
3905 (IF (EQL X (THE ...)) ...) (MISC.535).
3907 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3908 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3909 platform. The port supports 61-bit fixnums, large memory spaces
3910 and reloading shared object files.
3911 * enhancement: saving cores with foreign code loaded is now
3912 supported on ppc/Darwin in addition to the previously supported
3914 * enhancement: the statistical profiler now walks deeper into the
3915 call stack for more meaningful call-graphs and accrued time
3916 reports (x86/x86-64 only). It also now reports time spent in
3918 * enhancement: it is now possible to trace most individual methods
3919 of a generic function in addition to tracing the generic function
3921 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3923 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3924 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3925 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3926 produces an error. (thanks to Vincent Arkesteijn)
3927 * bug fix: NAMESTRING on pathnames with :WILD components in their
3928 directories works correctly. (thanks to Artem V. Andreev)
3929 * fixed bug 125: compiler preserves identity of closures. (reported
3931 * bug fixed: functions with &REST arguments sometimes failed with
3932 "Undefined function" when compiled with (DEBUG 3). (reported by
3934 * bug fix: overflow during compiling of setting element of a bit
3935 vector with constant index and value. (reported by Timmy Douglas)
3936 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3937 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3938 * on x86 compiler partially supports stack allocation of dynamic-extent
3940 * GO and RETURN-FROM do not check the extent of their exit points
3941 when compiled with SAFETY 0.
3942 * fixed some bugs related to Unicode integration:
3943 ** encoding and decoding errors are now much more robustly
3944 handled; it should now be possible to recover even from invalid
3945 input or output to the terminal. (thanks to Teemu Kalvas)
3946 ** provided a first cut at implementing STRING-TO-OCTETS and
3947 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3948 ** altered the SB-MD5 contributed module slightly, changing the
3949 interface just enough for it to be supportable for builds where
3950 lisp characters are not eight bits.
3951 * fixed some bugs revealed by Paul Dietz' test suite:
3952 ** the FORMATTER-generated functions for ~V[ conditionals require
3953 the correct number of arguments.
3954 ** READ-FROM-STRING returns the mandated second value when applied
3955 to displaced strings.
3956 ** the #\Rubout and #\Backspace characters are treated as invalid
3957 constituent characters by the tokenizer.
3959 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3960 * new feature: reloading changed shared object files with
3961 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3962 * new feature: references to foreign variables and functions
3963 can now be compiled and loaded before the corresponding shared
3964 object file is loaded, as long as the foreign definitions are
3965 available at runtime.
3966 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3967 supported. (thanks to Dan Debertin)
3968 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3969 just keywords. (thanks to Vincent Arkesteijn)
3970 * fixed bug #331: structure-class instances corresponding to
3971 DEFSTRUCT forms are now created eagerly.
3972 * fixed bug #345: backtraces from calls to undefined functions work
3973 on x86 as well. Related bug #61 is now also partially fixed on x86
3974 (backtraces from throws to unknown catch tags.)
3975 * bug fix: lambda-list parsing is now stricter vrt. order and number
3976 of lambda-list keywords.
3977 * bug fix: as specified by AMOP, an error is signalled if a
3978 class-option appears multiple times in a DEFCLASS form. (reported
3980 * bug fix: RANDOM can be compiled when the compiler derives the type
3981 of its numeric argument as a disjoint set of small integers.
3982 (reported by Paul Dietz)
3983 * bug fix: starting a core saved with shared objects loaded when
3984 those objects are not available no longer causes threaded SBCL to
3985 hang. (reported by Sean Ross)
3986 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3988 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3989 argument, which must always be NIL. (reported by Kalle Niemitalo)
3990 * bug fix: printing 1.0d+23 no longer results in an error.
3991 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3992 * bug fix: structure slot setters preserve evaluation order. (thanks
3994 * fixed some bugs related to Unicode integration:
3995 ** RUN-PROGRAM can allow its child to take input from a Lisp
3996 stream. (reported by Stefan Scholl)
3997 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3998 locales. (reported by Ken Causey)
3999 * fixed some bugs revealed by Paul Dietz' test suite:
4000 ** INCF, DECF and REMF evaluate their place form as specified in
4002 ** FORMATTER expands ~{ ~} iteration directives with V or #
4003 parameters correctly.
4004 ** FORMATTER deals with the ~@[ ~] conditional directive where the
4005 consequent uses no arguments correctly.
4006 ** the system has a partial understanding of the (COMPLEX RATIO)
4008 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
4011 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
4012 * new feature: a build-time option (controlled by the :SB-UNICODE
4013 keyword feature, enabled by default) for building the system with
4014 support for the entire 21-bit character space defined by the
4016 * new feature: the system now has rudimentary external-format
4017 support; the primary user-visible change at this time is that
4018 characters with the high bit set (such as lower-case-e-acute) will
4019 print correctly to a terminal in a UTF-8 environment.
4020 * minor incompatible change: BASE-CHAR no longer names a class;
4021 however, CHARACTER continues to do so, as required by ANSI.
4022 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
4023 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
4024 has been moved to the SB-EXT package (temporarily re-exported from
4026 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
4027 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
4029 * fixed bug #351: better error-handlind and reporting for malformed
4031 * fixed bug #350: bignum-printing is now more memory-efficient,
4032 allowing printing of very large bignums, eg. (expt 2 10000000).
4033 (reported by Bruno Haible)
4034 * fixed bug #302: better primitive-type selection for intersection
4036 * fixed bug #308: non-graphic characters now all have names, as
4037 required. (reported by Bruno Haible)
4038 * bug fix: redefining a class with different superclasses now correctly
4039 removes it from the direct-subclasses of its previous superclasses.
4040 (reported by David Morse)
4041 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
4042 new value now works. (reported by Bruno Haible)
4043 * bug fix: correct canonicalization of multiple non-standard slot
4044 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
4045 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
4046 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
4047 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
4048 now exists, an signals an error.
4049 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
4050 during macroexpansion for non-iteration variables as well. (reported
4051 by Bruno Haible for CMUCL)
4052 * bug fix: Cyclic structures and unprintable objects in compiler
4053 messages no longer cause errors. (reported by Bruno Haible)
4054 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
4055 and READ-FROM-STRING all now return a primary value of NIL if
4056 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
4057 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
4058 (reported by Bruno Haible for CMUCL)
4059 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
4060 do not designate a condition. (reported by Bruno Haible for
4062 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
4063 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
4064 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
4065 permitting resolution in favour of any of the conflicting symbols.
4066 (reported by Bruno Haible for CMUCL)
4067 * bug fix: EQUAL compiler optimizations is less aggressive on
4068 strings which can potentially compare true despite having distinct
4069 specialized array element types.
4070 * bug fix: unit enumerations can be defined without dividing by
4071 zero. (thanks to Vincent Arkesteijn)
4072 * FORMAT compile-time argument count checking has been enhanced.
4073 (report from Bruno Haible for CMUCL)
4074 * a partial workaround for the bug 262: the compiler does not try to
4075 inline-expand a local function doing RETURN-FROM from a deleted
4076 BLOCK. (thanks to Peter Denno for the bug report and to David
4077 Wragg for the simple test case)
4078 * fixed some bugs revealed by Paul Dietz' test suite:
4079 ** RENAME-PACKAGE allows all package designators as new package
4081 ** constraint propagation and lambda variable substitution are
4082 more cautious in dealing with partially deleted code.
4083 ** compiler sometimes lost reoptimization passes.
4084 ** CERROR, given a condition as condition designator, passes its
4085 remaining arguments to the continue format control without
4087 ** Case-altering FORMAT directives work correctly on non-ASCII
4089 ** The REAL type specifier handles bounds outside the floating
4090 point ranges without signalling FLOATING-POINT-OVERFLOW.
4091 ** Functions with IR1-transformations can create intercomponent
4092 references to global functions.
4093 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4095 ** FORMAT ~R treats a nil value for its first parameter correctly.
4097 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4098 * enhancement: saving cores with foreign code loaded is now
4099 supported on x86/NetBSD and sparc/Linux in addition to the previously
4100 supported platforms.
4101 * bug fix: on some platforms repeated installations caused multiple
4102 copies of HTML documentation to be installed -- should not happen
4103 any more. (reported by Stefan Scholl)
4104 * bug fix: parsing self-recursive alien record types multiple times
4105 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4106 original patch by Helmut Eller for CMUCL)
4107 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4108 (thanks to Richard Kreuter)
4109 * bug fix: defining classes whose accessors are methods on existing
4110 generic functions in other (locked) packages no longer signals
4111 bogus package lock violations. (reported by François-René Rideau)
4112 * bug fix: special variables as DEFMETHOD parameters no longer have
4113 associated bogus type declarations. (reported by David Wragg and
4115 * bug fix: read-write consistency on streams of element-type
4116 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4117 * bug fix: redefiniton of the only method of a generic function with
4118 no DEFGENERIC no longer emits a full WARNING. In addition,
4119 redefinition of generic functions with no DEFGENERIC to an
4120 incompatible lambda list now signals an error. (thanks to Zach
4122 * bug fix: DEFGENERIC now works even when there's a function of the
4123 same name in an enclosing lexical environment. (thanks to Zach
4125 * fixed compiler failure, caused by instrumenting code during
4126 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4127 * optimization: added loop analysis and improved register allocation
4128 * fixed some bugs revealed by Paul Dietz' test suite:
4129 ** POSITION on displaced vectors with non-zero displacement
4130 returns the right answer.
4131 ** (SIMPLE-STRING) is a valid type specifier for sequence
4133 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4135 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4136 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4138 ** The justification version of the FORMAT ~< directive treats
4139 non-zero minpad parameter correctly.
4141 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4142 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4143 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4144 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4145 the supported interface.
4146 * new feature: Single-stepping of code compiled with DEBUG 2 or
4147 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4148 * new feature: saving cores with foreign code loaded is now
4149 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4150 Timothy Moore's work for CMUCL)
4151 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4152 parameters to * instead of NIL if no initform is supplied.
4153 (reported by Johan Bockgaard)
4154 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4155 correctly when FUNCALL appears as the car of the form. Note:
4156 despite this FUNCALL forms are not currently subject to
4157 compiler-macro expansion. (port of Raymond Toy's fix for the
4158 same from CMUCL, reported by Johan Bockgaard)
4159 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4160 (thanks for Teemu Kalvas)
4161 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4162 case instead of terminating the iteration (thanks for Julian
4163 Squires, Sean Champ and Raymond Toy)
4164 * bug fix: incorrect expansion of defgeneric that caused a style
4165 warning. (thanks for Zach Beane)
4166 * bug fix: slot accessor effective method computation works properly
4167 for classes with multiple non-standard applicable methods on
4168 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4169 * on x86 compiler supports stack allocation of results of LIST and
4170 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4171 CMUCL implementation by Gerd Moellmann)
4172 * fixed some bugs revealed by Paul Dietz' test suite:
4173 ** FORMAT strings with both the ~<~:;~> form of the justification
4174 directive and pretty-printing directives cause an error.
4176 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4177 * incompatible change: the internal functions
4178 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4179 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4180 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4181 instead of the old functions.
4182 * new feature: on platforms where "dladdr" is available foreign
4183 function names now appear in backtraces. (based on Helmut Eller's
4185 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4186 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4188 * documentation: ASDF manual is now distributed with SBCL.
4189 * bug fix: SBCL can now load its contributed modules with REQUIRE
4190 even if the system-provided entries have been removed from
4191 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4193 * bug fix: backtraces involving undefined functions or assembly
4194 routines are more informative. (thanks to Brian Downing)
4195 * bug fix: mutually referent alien structures now work correctly.
4196 (reported by Rick Taube)
4197 * bug fix: structures defined by WITH-ALIEN can be referred to
4198 within other definitions in the same WITH-ALIEN.
4199 * bug fix: division operators (MOD, TRUNCATE and the like) with
4200 constant zero divisors and integer dividends no longer generate
4202 * bug fix: provide default methods for INPUT-STREAM-P and
4203 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4204 * bug fix: improve the detection and resolution of MOP metacycles
4205 (where effective method computation depends on the generic function
4206 having its effective method computed). (reported by Bruno Haible)
4207 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4208 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4209 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4210 * bug fix: pathnames with relative directory components can be
4211 represented relative to default pathnames.
4212 * optimization: in taking the GCD of bignums, reduce the two bignums
4213 to approximately the same size (using Euclid's algorithm) before
4214 applying the more sophisticated binary GCD. (thanks to Juho
4216 * optimization: COUNT on bitvectors now operates word-at-a-time.
4217 * optimization: ASH with a positive, but not necessarily constant,
4218 (leftwards) shift, when in a modular context, is compiled to a
4220 * fixed some bugs revealed by Paul Dietz' test suite:
4221 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4222 if the corresponding argument is NIL.
4223 ** FORMAT directives accepting a minpad parameter treat negative
4225 ** literal commas as character parameters to FORMAT directives are
4227 ** literal spaces directly after ~<Newline> directives within a
4228 format-logical-block (~:< ~@:>) do not induce :FILL-style
4229 conditional newlines.
4230 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4231 as specified: it no longer includes conditional newlines).
4232 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4234 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4235 :PER-LINE-PREFIX argument does not evaluate to a string.
4237 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4238 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4239 the manual for details; for now, package locks can be disabled by
4240 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4241 if no major problems are found then it is likely that they will be
4242 compiled in unconditionally.
4243 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4244 unsupported operators on all platforms. To load a shared library
4245 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4246 object file, link it into a shared library outside of SBCL and
4247 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4249 * bug workaround: ROOM T and the GC were not working together
4250 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4251 reporting facility aren't preserved. That reporting has been
4252 disabled, so now until and unless someone figures out how to make it
4253 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
4254 * minor incompatible change: as threatened around sbcl-0.8.0, the
4255 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
4256 The symbols are also exported from SB-PCL for backwards
4257 compatibility, but more so than before SB-PCL should be treated as
4258 an implementation-internal package.
4259 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
4261 * the SB-SPROF contrib now works on (most) non-x86 architectures.
4262 It is known as of this release not to work on the Alpha, however.
4263 * fixed bug #167: errors signalled due to illegal syntax in method
4264 bodies are now more legible.
4265 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4266 designators and can hence be used with TYPEP.
4267 * fixed bug #333: CHECK-TYPE now ensures that the type error
4268 signalled, if any, has the right object to be accessed by
4269 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4270 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4271 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4273 * fixed bug #334: programmatic addition of slots using specialized
4274 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4275 and :ALLOCATION :CLASS slots.
4276 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4277 float exponents. (rereported by Peter Seibel)
4278 * fixed a bug: #\Space (and other whitespace characters) are no
4279 longer considered to be macro characters in standard syntax by
4280 GET-MACRO-CHARACTER.
4281 * fixed bug: initialization of condition class metaobjects no longer
4282 causes an instance of the condition to be created. (reported by
4284 * fixed bug: it is now possible to have slots such that
4285 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4286 description is neither :INSTANCE nor :CLASS.
4287 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4288 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4289 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4290 non-standard SLOT-DEFINITION-ALLOCATION values.
4291 * fixed bugs: various race conditions handling exiting threads.
4292 CL-PPCRE's thread torture test now passes.
4293 * fixed arguably-a-bug: GC time proportional to number of threads in
4294 system even when most of them are idle
4295 * optimization: improved performance of BIT and SBIT on bit-vectors.
4296 * .fasl file incompatibility: The fasl file version number has
4297 been incremented because of changes associated with package locks.
4299 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4300 * minor incompatible change: the system no longer provides
4301 optimization hints (conditions which are TYPEP
4302 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4303 mode; these hints are still emitted when higher SPEED optimization
4305 * new contrib module: a sampling profiler (profiling by statistical
4306 sampling, rather than by instrumenting functions) is available as
4307 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4308 * the behaviour of the standard function ED is now customizeable by
4309 third parties through a hook variable: see ED's documentation
4310 string for information on the protocol.
4311 * the compiler no longer emits efficiency notes for (FUNCALL X)
4312 when the type of X is uncertain under default optimization
4314 * fixed bug 276: mutating a binding of a specialized parameter to a
4315 method to something that is not TYPEP the specializer is now
4317 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4318 exhibit the required behaviour on the x86 platform. (thanks to
4319 Peter van Eynde, Eric Marsden and Bruno Haible)
4320 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4321 even for difficult arguments. (reported by Peter Graves)
4322 * fixed bug 141a: the backquote printer now descends quoted
4324 * fixed another bug in backquote printing: no more destructive
4325 modification of the form's list structure. (reported by Brian
4327 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4328 move between its address being taken and the call to
4329 interrupt_thread, fixing a crashing race condition.
4330 * the SB-POSIX contrib implementation has been adjusted so that it
4331 no longer exhibits ridiculously poor performance when constructing
4332 instances corresponding to C structs.
4334 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4335 * minor incompatible change: the sb-grovel contrib now treats C
4336 structures as alien (in the sense of SB-ALIEN) objects rather than
4337 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4338 has implications for memory management of client code
4339 (sb-grovel-returned objects must now be manually managed) and for
4340 type safety (alien objects now have full types).
4341 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4342 used to control emission of compiler diagnostics, rather than the
4343 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4344 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4345 quality should be considered deprecated.
4346 * install.sh now installs the user manual as well
4347 * (not quite a new documentable feature, but worth considering in
4348 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4349 beginnings of a semantically meaningful condition hierarchy is
4350 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4352 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4353 designator as the defaults argument.
4354 * fixed bug: Displaced arrays whose displaced-to array has become
4355 too small now cause ARRAY-DIMENSION to signal an error, providing
4356 for safer bounds-checking. (reported by Bruno Haible)
4357 * fixed bug: DEFCLASS slot definitions with identical :READER and
4358 :WRITER names now signal a reasonable error. (reported by Thomas
4360 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4362 * fixed bug: Invalid slot specification errors now print correctly.
4363 (thanks to Zach Beane)
4364 * fixed bug 320: Shared to local slot value transfers in class
4365 redefinitions now happen corrently from superclasses as
4366 well. (reported by Bruno Haible)
4367 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4369 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4370 improper lists correctly. (reported by Bruno Haible)
4371 * fixed bug 313: source-transform for <fun-name> was erroneously
4372 applied to a call of a value of a variable with name <fun-name>.
4373 (reported by Antonio Menezes Leitao)
4374 * fixed bug 307: The obsolete instance protocol ensures that
4375 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4376 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4377 remove dead unknown-values globs from the middle of the stack.
4378 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4379 easier to resume long computations after using *BREAK-ON-SIGNALS*
4380 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4381 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4382 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4383 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4384 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4385 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4387 * fixed a (fairly theoretical) bug in string printing: if
4388 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4389 does not have array-element-type equal to the most general string
4391 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4392 function name. (thanks to Nikodemus Siivola)
4393 * fixed bug: compile-time format string checker failed on
4394 non-closed ~{. (reported by Thomas F Burdick)
4395 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4396 don't warn on legal loop code involving more than one aggregate
4397 boolean. (thanks to Nikodemus Siivola)
4398 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4399 in keyword position to MAKE-PACKAGE was not being reported as
4401 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4402 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4404 * fixed bugs 280 and 312: the checking for multiple definitions in a
4405 file is less likely to become confused by uses of inline
4407 * fixed bug: the #S reader macro performs the keyword coercion
4408 specified for slot names. (reported by Kalle Niemitalo)
4409 * fixed bug: lambda lists may contain symbols whose names start with
4410 & but are not lambda-list-keywords; their occurrence triggers a
4412 * fixed bug 321: define-method-combination argument lambda lists do
4413 not cause invalid code to be generated when &optional or &aux
4414 variables have default values. (reported by Bruno Haible)
4415 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4416 have CLOS classes; this appears also to have fixed reported
4417 instability in stack exhaustion detection.
4418 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4419 MUFFLE-WARNING when no associated restart is present is now
4421 * optimization: rearranged the expansion of various defining macros
4422 so that each expands into only one top-level form in a
4423 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4425 * optimization: used a previously little-used slot in symbols to
4426 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4428 * fixed some bugs revealed by Paul Dietz' test suite:
4429 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4431 ** Fixed an optimization bug related to inheritance of initforms
4432 from local to shared slots.
4433 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4434 ** CAST optimizer forgot to flush argument derived type.
4435 ** print/read consistency on floats is now orders of magnitude
4436 more likely. (thanks also to Bruno Haible for a similar report
4438 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4439 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4440 for objects of type REAL. Make it so.
4441 ** SXHASH is specified (infelicitously) to respect similarity,
4442 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4443 it so. (thanks to Markus Ziegler)
4444 ** on the Alpha, the compiler succeeds in compiling functions
4445 returning a known number of arguments greater than 63.
4446 ** fixed handling of invalid NIL arguments in keyword position
4448 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4450 ** provided a readably-printable representation for RANDOM-STATE
4452 ** ensured that pathnames, where they have a namestring, always
4453 print using #P"..." syntax.
4455 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4456 * Support for the forthcoming 2.0 version of the NetBSD kernel
4457 running on x86 hardware has been added. (thanks to Perry
4458 E. Metzger most immediately, and others for their past work)
4459 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4460 current release version; SBCL's OpenBSD support had been broken
4461 since about the time of OpenBSD's switch to ELF binary format.)
4462 * [placeholder for DX summary]
4463 ** user code with &REST lists declared dynamic-extent, under high
4464 speed or space and low safety and debug optimization policy.
4465 * The manual has been converted to Texinfo format and the debugger
4466 chapter from the cmucl manual has been added.
4467 * A facility has been added to extract documentation strings from
4468 sbcl and store them as Texinfo-formatted snippets for inclusion in
4469 the manual (via Texinfo's @include directive)
4470 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4471 the test case to Dave Roberts)
4472 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4473 pointers. (reported by Sean Ross)
4474 * bug fix: PROFILE output is printed nicely even for large numerical
4475 values. (thanks to Zach Beane)
4476 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4477 greater than 32 handle EOF correctly.
4478 * bug fix: on X86 an immediate argument of the IMUL instruction is
4479 correctly printed in disassembly. (thanks to Lutz Euler)
4480 * bug fix: class slots in redefined classes preserve their old
4481 values. (thanks to Bruno Haible and Nikodemus Siivola)
4482 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4483 succeeds. (reported by Marco Baringer)
4484 * fixed some bugs revealed by Paul Dietz' test suite:
4485 ** READ-SEQUENCE now works on ECHO-STREAMs.
4486 ** RATIONALIZE works more according to its specification. (thanks
4489 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4490 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4491 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4492 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4493 should matter to you only if you rebind the printer control
4494 variables and then find you want different bindings in the
4495 debugger than in the ordinary execution of your program.)
4496 * The runtime build system has been tweaked to support building
4497 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4498 assembler and linker. (thanks to Nikodemus Siivola)
4499 * Unbound, undefined, undeclared variables now trigger full
4500 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4501 more often programmer error than deliberate exploitation of undefined
4503 * optimization: the hash algorithm for strings has changed to one
4504 that is less vulnerable to spurious collisions. (thanks to Juho
4506 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4507 needless bounds checking. (thanks to Juho Snellman)
4508 * optimization: implemented multiplication as a modular
4509 (UNSIGNED-BYTE 32) operation on the PPC backend.
4510 * fixed some bugs revealed by Paul Dietz' test suite:
4511 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4513 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4514 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4515 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4517 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4519 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4521 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4522 their output stream on EOF from read.
4523 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4524 have been read to end-of-file.
4525 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4527 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4528 description of determination of which consecutive characters
4530 ** Printing the "Space" character with escaping on now yields "#\\ ",
4531 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4532 ** Reading floating-point numbers with *READ-BASE* set to a number
4533 less than 10 works correctly.
4534 ** Reading floating-point numbers with *READ-BASE* set to a number
4535 more than 10 works correctly.
4536 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4537 the readtable currently in effect.
4539 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4540 * minor incompatible change: parsing of namestrings on a physical
4541 (Unix) host has changed; numbers after the final #\. in a
4542 namestring are no longer interpreted as a version field. This is
4543 intented to be largely invisible to the user, except that the
4544 meaning of the namestring "*.*.*" has changed: it now refers to a
4545 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4546 should usually be replaced by
4547 (make-pathname :name :wild :type :wild :version :wild)
4548 with the added benefit that this is more likely to be portable.
4549 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4550 option to OPEN now signals an error if the file being opened
4551 exists; this may have an impact on existing code.
4552 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4553 signals received, on the PowerPC platforms (both Linux and
4554 Darwin). (thanks to Pierre Mai for pointing out the location of
4556 * several fixes on OS X: The system now builds and runs cleanly on
4557 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4558 (thanks to Brian Mastenbrook)
4559 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4560 second-resolution: integer multiples of 1/3600 between -24 and 24.
4561 (thanks to Vincent Arkesteijn)
4562 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4563 type when called with 1 argument; PEEK-CHAR checked type of
4564 PEEK-TYPE only after having read first character from a
4565 stream. (reported by Peter Graves)
4566 * bug fix: the garbage collector now has much better locality
4567 behaviour, and in particular no longer treats all memory as being
4568 exhausted when many small objects point to each other in a deeply
4570 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4571 recognized as being TYPEP their class.
4572 * bug fix: the PUSHNEW documentation string has been corrected.
4573 (thanks to Vincent Arkesteijn)
4574 * bug fix: defaulting of the value for the last of an atypically
4575 large number of multiple values being bound was not being
4576 performed correctly on the Alpha or PPC platforms
4577 * optimization: implemented multiplication as a modular
4578 (UNSIGNED-BYTE 32) operation on the x86 backend.
4579 * optimization: SEARCH on simple-base-strings can now be open-coded.
4580 (see also contrib/compiler-extras.lisp for inspiration for
4581 teaching the compiler about the Boyer-Moore algorithm).
4582 * value, returned by MAX (and MIN) called with several EQUALP, but
4583 not EQL, arguments now does not depend on compiler settings.
4584 * fixed some bugs revealed by Paul Dietz' test suite:
4585 ** in stack analysis liveness information is propagated from
4586 non-local entry points.
4587 ** pathwise CAST removing failed when the CAST node did not start
4589 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4590 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4592 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4593 host is already defined.
4594 ** RENAME-FILE works on streams instead of signalling an internal
4596 ** PEEK-CHAR uses the current readtable when determining whether
4597 or not a character is whitespace.
4598 ** MERGE-PATHNAMES handles the case when the pathname does not
4599 specify a name while the default-pathname specifies a version.
4600 ** Pathnames now stand a better chance of respecting print/read
4602 ** Attempting to use standardized file system operators with a
4603 pathname with invalid :DIRECTORY components signals a
4605 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4607 ** DIRECTORY on logical pathnames is more correct.
4608 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4609 signal a TYPE-ERROR if their argument is not a stream.
4610 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4611 designator argument does not designate a stream.
4612 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4613 examining the synonym.
4614 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4616 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4617 element-type larger than ([UN]SIGNED-BYTE 32).
4619 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4620 * When built with the :SB-FUTEX feature, threaded builds now take
4621 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4622 for faster/more reliable mutex and condition variable support.
4623 * Incompatible change (but one you probably shouldn't have been using
4624 anyway): the interface and code for arbitrating between multiple
4625 threads in the same user session has been redesigned.
4626 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4627 error when called without an explicit environment argument.
4628 (thanks to Nikodemus Siivola)
4629 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4630 confused about their position. (thanks to Adam Warner and Gerd
4632 * bug fix: Pretty printing backquoted forms with unquotations in the
4633 argument list position of various code constructs such as LAMBDA
4634 now works correctly. (reported by Paul Dietz)
4635 * bug fix: Pretty printing unquotations no longer loses all
4636 stream position information.
4637 * optimization: performance of string output streams is now less
4638 poor for multiple small sequence writes.
4639 * optimization: performance of CSUBTYPEP in the presence of complex
4640 expressions involving CONS and NOT many times has been improved.
4641 (reported by Paul Dietz)
4642 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4644 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4645 streams for the REPL, for the debugger, and so on. (thanks to
4647 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4648 * fixed some bugs revealed by Paul Dietz' test suite:
4649 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4650 is ignored if it is too small, rather than propagating through
4651 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4652 ** extremely complex negations of CONS types were not being
4653 sufficiently canonicalized, leading to inconsistencies in
4655 ** VALUES tranformer lost derived type.
4657 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4658 * fixed a bootstrapping bug: the build process no longer assumes
4659 that the various BOOLE-related constants have the same value in
4660 host and target lisps. (noted by Paul Dietz' test suite on an
4661 SBCL binary built from CLISP)
4662 * The system can now be dynamically linked on the MIPS platform,
4663 which enables dynamic loading of foreign code from Lisp. (thanks
4664 to Ralf Baechle for discussions on the MIPS ABI)
4665 * The system now records debugging information for its own source
4666 files in a filesystem-position-independent manner, relative to
4667 the "SYS" logical host.
4668 * fixed a compiler bug: MV-LET convertion did not check references
4669 to the "max args" entry point. (reported by Brian Downing)
4670 * tweaked disassembly notes to be less confident about proclaiming
4671 some instruction as an LRA. (thanks to Brian Downing)
4672 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4673 now each have their own history, command character, and other
4674 characteristics. (thanks to David Lichteblau)
4675 * fixed some bugs revealed by Paul Dietz' test suite:
4676 ** compiler failure in compiling LOGAND expressions including a
4678 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4679 shift greater than 32.
4680 ** FLUSH-DEST did not mark blocks for type check regeneration.
4681 ** HANDLER-CASE failed to accept declarations in handler clauses
4682 in some circumstances.
4684 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4685 * New code in contrib/sb-introspect (still probably not entirely
4686 stable yet) provides some support for smart Lisp development
4687 environments like SLIME.
4688 * The conditions signalled for errors occurring when loading .fasl
4689 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4690 in a way which should help ASDF recover gracefully.
4691 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4692 stuff has been cleaned up. If you code contrib/ stuff, this might
4693 affect you, and you can look at contrib/README, contrib/STANDARDS,
4694 and/or the 0.8.4.27 diff to check.
4695 * In full calls the compiler now does not generate checks for declared
4696 argument types for all arguments.
4697 * various threading fixes
4698 ** and some experimental patches which didn't make it into
4699 the main tree for this release, but which are shipped in
4700 contrib/experimental-thread.patch as a possible fix for some
4701 failures (deadlock, spinning...) in GC-intensive multithreaded
4703 * fixed PPC build problem (source code incompatibility of different
4704 library versions): added offsetof() hackery which attempts to divine
4705 where glibc maintainers put uc_mcontext today
4706 * fixed bug 282: compiler does not trust type assertions while passing
4707 arguments to a full call.
4708 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4709 &OPTIONAL VALUES type parameter.
4710 * fix bug 214: algorithm for noting rejected templates is now more
4711 similar to that of template seletion. (also reported by rydis on
4713 * fixed bug 141b: printing backquoted information readably and prettily
4714 inserts a space where necessary.
4715 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4716 (CHARACTER 10) are now reported as errors, rather than propagated
4717 as unknown types. (reported by piso on #lisp)
4718 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4719 with values NIL and :ERROR. (thanks to Milan Zamazal)
4720 * fixed bug 191c: CLOS now does proper keyword argument checking as
4721 described in CLHS 7.6.5 and 7.6.5.1.
4722 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4723 longer raise an error; further, using a list as a for-as-arithmetic
4724 counter now raises a meaningful error.
4725 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4726 now understood by sequence creation functions such as MAKE-SEQUENCE
4728 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4729 a STRING-INPUT-STREAM.
4730 * compiler enhancement: SIGNUM is now better able to derive the type
4732 * type declarations inside WITH-SLOTS are checked. (reported by
4734 * fixed some bugs revealed by Paul Dietz' test suite:
4735 ** incorrect optimization of TRUNCATE for a positive first
4736 argument and negative second.
4737 ** compiler failure in let-convertion during flushing dead code.
4738 ** compiler failure while deriving type of TRUNCATE on an
4739 interval, containing 0.
4740 ** ASH of a negative bignum by a negative bignum count now returns
4742 ** intersection of CONS types now canonicalizes properly, fixing
4743 inconsistencies in SUBTYPEP.
4745 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4746 * incompatible change: The --disable-debugger command line
4747 option now clobbers the debugger at a more fundamental
4748 level, by redefining #'INVOKE-DEBUGGER instead of by
4749 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4750 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4751 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4752 enter the debugger REPL and then suffer recursive errors
4753 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4754 while under the new system, BREAK in --disable-debugger mode
4755 terminates the system just as an unhandled error would.
4756 * fixed compiler performance when processing loops with a step >1;
4757 * bug fix: DOCUMENTATION now retrieves generic function
4758 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4759 support has been systematized, and now supports the methods
4760 specified by ANSI, along with a default method and a method for
4761 slot documentation. (reported by Nathan Froyd)
4762 * bug fix: effective methods associated with a generic function are
4763 no longer cached over a change of that generic function's method
4764 combination. (reported by Andreas Fuchs)
4765 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4766 names a non-existent directory. (thanks to Andreas Fuchs)
4767 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4768 the PPC platform, lead to stack corruption; this has been fixed.
4769 (reported by Rainer Joswig)
4770 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4771 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4772 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4773 arithmetic in general, is now much more reliable on the PPC
4775 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4776 platform now returns the right answer.
4777 * optimization: restored some effective method precomputation in
4778 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4779 precomputation is now tunable.
4780 * optimization: compiler-internal data structure use has been
4781 reviewed, and changes have been made that should improve the
4782 performance of the compiler by about 20%.
4783 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4784 simple-base-strings and simple-bit-vectors is improved.
4785 * optimization: the optimization of 32-bit logical and arithmetic
4786 functions introduced in version 0.8.3 on the x86 has been
4787 implemented on the mips, ppc and sparc platforms; an
4788 implementation of the same facility, but for 64-bit arithmetic,
4789 has been added for the alpha.
4790 * microoptimization: the compiler is better able to make use of the
4791 x86 LEA instruction for multiplication by constants.
4792 * bug fix: in some situations compiler did not report usage of
4793 generic arithmetic in (SPEED 3) policy.
4794 * bug 145b fix: compiler used wrong type specifier while converting
4795 MEMBER-types to numeric.
4796 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4798 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4799 index argument now works properly on the Alpha platform.
4800 * bug fix: floating point exception treatment on the Alpha platform
4802 * bug fix: FILE-POSITION works much better on string input and
4803 output streams. (thanks to Nikodemus Siivola)
4804 * bug fix: many threading/garbage collection symptoms sorted.
4805 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4806 might be pseudo-atomic.
4807 * internal change: Stopping for GC is now done with signals not
4808 ptrace. GC is now done in whichever thread wanted it, instead of
4810 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4812 * bug fix: result form in DO is not contained in the implicit
4814 * incompatible change: ICR structure is changed; the value part of
4815 CONTINUATION is now called LVAR; corresponding functions are
4816 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4817 * added type deriver for ISQRT (thanks to Robert E. Brown).
4818 * bug fix: better support for loading from the command line when an
4819 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4821 * fixed some bugs revealed by Paul Dietz' test suite:
4822 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4823 ** ROUND and FROUND now give the right answer when given very
4824 small float arguments.
4825 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4827 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4828 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4829 ** LCM should return a non-negative integer.
4830 ** PARSE-INTEGER returned the index of a terminator instead of the
4831 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4832 ** PARSE-INTEGER returned an incorrect index being applied to a
4834 ** LCM with two arguments of 0 returns 0 rather than signalling
4836 ** unsigned addition of a 32-bit constant with the high bit set no
4837 longer causes an internal compiler error on the x86.
4838 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4839 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4840 with negative last argument.
4841 ** byte specifiers with zero size and position no longer cause
4842 an error during type derivation.
4843 ** bignum multiplication on the Alpha platform now returns the
4845 * porting: The system now builds on SuSE AMD64, although it still
4846 generates a 32-bit binary.
4847 * .fasl file incompatibility: The fasl file version number has
4848 been incremented (because of the changes to internal compiler
4849 data structures referred to above).
4851 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4852 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4853 more accurately, on the Darwin kernel running on PowerPC hardware.
4854 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4855 * Compiler code deletion notes now signal a condition of type
4856 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4857 an associated MUFFLE-WARNING restart.
4858 * The compiler now performs limited argument count validation of
4859 constant format strings in FORMAT, and where appropriate in ERROR,
4860 CERROR and WARN. (thanks to Gerd Moellmann)
4861 * New ASDF-INSTALL contrib can be used for automatic download and
4862 installation of third-party Lisp code from CCLAN or other sites
4864 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4865 which forces another thread to execute a function supplied by the
4867 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4868 now accept and act upon their :ELEMENT-TYPE keyword argument.
4869 (reported by Martin Atzmueller, Edi Weitz)
4870 * bug fix: FILE-POSITION now accepts position designators up to
4871 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4872 is the greater. (thanks to Patrik Nordebo)
4873 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4874 Kalle Olavi Niemitalo)
4875 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4876 printable. (reported by Eric Marsden)
4877 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4878 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4879 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4880 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4881 (thanks to Stig Sandoe)
4882 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4883 UNREAD-CHAR now correctly includes the unread character in the
4884 target sequence. (thanks to Gerd Moellmann)
4885 * bug fix in threaded builds: the system can now be suspended and
4886 resumed by shell job control with minimal disruption.
4887 * bug fixes in times and timezones >2038AD
4888 * better handling of "where is GNU make?" problem in build scripts
4889 (thanks to Nikodemus Siivola)
4890 * new optimization: inside a named function any reference to a
4891 function with the same name is considered to be a self-reference;
4892 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4893 optimization quality.
4894 * new optimization on x86: logical functions and + now have
4895 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4896 used when the result is truncated to 32 bits.
4897 * VALUES declaration is partially enabled.
4898 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4899 * fixed some bugs revealed by Paul Dietz' test suite:
4900 ** The system now obeys the constraint imposed by
4901 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4902 types form a lattice under type intersection.
4903 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4904 ** ASSOC now ignores NIL elements in an alist.
4905 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4906 and (1+ MOST-POSITIVE-FIXNUM) answers.
4907 ** The addition of a method with invalid qualifiers to a generic
4908 function does not cause an error to be signalled immediately;
4909 a warning is signalled, and the error is generated only on
4910 calling the generic function.
4911 * changed .fasl file version number, in part to add type codes for
4912 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4913 obscure ANSI requirements
4915 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4916 * fixed bug 148: failure to inline-expand a local function left
4917 garbage, confusing the compiler.
4918 * fixed bugs 3cd: structure slot readers perform type check if the
4919 slot can have an invalid value (i.e. it is either not initialized
4920 or can be written with a less specific slot writer).
4921 * bug fix: the compiler now traps array references to elements off
4922 the end of an array; previously, the bounds checking in some
4923 circumstances could go off-by-one.
4924 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4926 * type declarations for array element types now obey the description
4927 on the CLHS page "Declaration TYPE", as per discussions on
4928 sbcl-help around 2003-05-08. This means that a declaration
4929 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4930 declaration, all references to BAR will be asserted or assumed
4931 (with THE, so dependent on compiler policy) to involve objects of
4932 type FOO. Note that no such declaration is implied in
4933 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4934 * declared types of functions from the "Conditions"
4935 chapter. (reported by Paul Dietz)
4936 * bug fix: CERROR accepts a function as its first argument.
4937 * bug fix: NTH an NTHCDR accept a bignum as index
4938 arguments. (reported by Adam Warner)
4939 * optimization: character compare routines now optimize comparing
4940 against a constant character. (reported by Gilbert Baumann)
4941 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4942 argument now works properly on the MIPS platform.
4943 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4944 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4945 declared to have a functional type, does not cause an error
4947 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4948 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4949 * fixed bug: if last continuation of a deleted block has a
4950 destination, this destination should be deleted too. (reported by
4952 * fixed a bug in the bootstrap process: the host compiler's values
4953 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4954 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4955 test case from Patrik Nordebo)
4956 * improved the ability of the disassembler on the PPC platform to
4957 provide helpful disassembly notes.
4958 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4959 the class in more cases than previously.
4960 * bug fix: FILE-POSITION now understands :START and :END for
4961 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4962 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4963 8) data. (thanks to David Lichteblau)
4964 * bug fix: it is possible to add a method to a generic function
4965 without lambda list.
4966 * bug fix: reader failed to signal END-OF-FILE inside an
4967 object representation. (reported by Nikodemus Siivola)
4968 * fixed some bugs revealed by Paul Dietz' test suite:
4969 ** LAST and [N]BUTLAST should accept a bignum.
4970 ** condition slot accessors are methods.
4971 ** (VECTOR NIL) is a subtype of STRING.
4973 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4974 * minor incompatible change: some nonsensical specialized lambda
4975 lists (used in DEFMETHOD) which were previously ignored now signal
4977 * minor incompatible change: the system is now aware of the types of
4978 variables in the COMMON-LISP package, and will signal errors for
4979 most violations of these type constraints (where previously they
4980 were silently accepted).
4981 * minor incompatible change: COMPILE-FILE now uses the freedom
4982 afforded (ANSI 3.2.2.3) to use derived function types for
4983 functions defined in the same file. This also permits the system
4984 to warn on static type mismatches and function
4985 redefinition. (Currently it does not work with high DEBUG level.)
4986 * minor incompatible change: VALUES declaration is disabled.
4987 * When issuing notes, the compiler now signals a condition of type
4988 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4989 restart for use in user handlers. It is expected that the
4990 COMPILER-NOTE condition will eventually become a condition
4991 supertype to a hierarchy of note types, which will then be
4992 handleable in a similar fashion. However, at the moment, no such
4993 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4994 but it's an implementation detail, not a classification for the
4996 * Changes in type checking closed the following bugs:
4997 ** type checking of unused values (192b, 194d, 203);
4998 ** template selection based on unsafe type assertions (192c, 236);
4999 ** type checking in branches (194bc).
5000 * A short form of VALUES type specifier has ANSI meaning (it has
5001 increased the number of situations when SBCL cannot perform type
5003 * fixed bug in DEFSTRUCT: once again, naming structure slots with
5004 keywords or constants is permissible.
5005 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
5006 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
5007 classes. (thanks to Antonio Martinez)
5008 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
5009 outputs FRESH-LINE or TERPRI, and no longer converts its stream
5010 argument to a pretty-print stream. Instead, it leaves any such
5011 operations to DESCRIBE-OBJECT methods.
5012 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
5014 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
5015 lambda lists. (thanks to David Lichteblau)
5016 * bug fix: Defining a generic function with a :METHOD-CLASS being a
5017 subclass of STANDARD-METHOD no longer causes stack exhaustion.
5018 (thanks to Gerd Moellmann)
5019 * fixed bug 246: increased compilation speed of long
5020 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
5022 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
5024 * DEFCONSTANT now throws a condition of type
5025 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
5026 constant to a non-EQL value; CONTINUE and ABORT restarts
5027 respectively change and preserve the value.
5028 * fixed bug 63: The code walker, part of the implementation of CLOS,
5029 is now better at handling symbol macros.
5030 * bug fix: There is no longer an internal implementation type named
5031 CL:LENGTH. (reported by Raymond Toy)
5032 * bug fix: In macro-like defining macros/special operators the
5033 implicit block does not enclose the lambda list.
5034 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
5035 enclosed in parentheses) are not suitable as type specifiers, and
5036 their use properly signals an error now.
5037 * bug fix: An argument count mismatch for a type specifier in code
5038 being compiled no longer causes an unhandled error at compile
5039 time, but signals a compile-time warning.
5040 * fixed simple vector readable printing
5041 * bug fix: DESCRIBE takes more care over whether the class
5042 precedence list slot of a class is bound before accessing it.
5043 (reported by Markus Krummenacker)
5044 * bug fix: FORMATTER can successfully compile pretty-printer format
5045 strings which use variants of the ~* directive inside.
5046 * bug fix: SEARCH now applies its TEST predicate to the elements of
5047 the arguments in the correct order. (thanks to Wolfhard Buss)
5048 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
5049 in type inference. (thanks to Robert E. Brown)
5050 * bug fix: Reading in symbols with an explicit package name of ""
5051 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
5052 * fixed some bugs revealed by Paul Dietz' test suite:
5053 ** NIL is now allowed as a structure slot name.
5054 ** Arbitrary numbers, not just REALs, are allowed in certain
5055 circumstances in LOOP for-as-arithmetic clauses.
5056 ** Multiple class redefinitions before slot access no longer
5057 causes a type error.
5058 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
5059 association between the name and a class.
5060 ** Generic functions with non-standard method-combination and over
5061 five methods all of which return constants no longer return NIL
5062 after the first few invocations. (thanks to Gerd Moellmann)
5063 ** CALL-NEXT-METHOD with no arguments now passes the original
5064 values of the arguments, even in the presence of assignment.
5065 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
5067 ** DISASSEMBLE works with closures and funcallable instances.
5068 ** ADD-METHOD now returns the generic function, not the new method.
5069 ** FIND-METHOD signals an error if the lengths of the specializers
5070 is incompatible with the generic function, even if the ERRORP
5072 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
5073 which its argument is a member.
5074 ** DEFCLASS only redefines the class named by its class-name
5075 argument if that name is the proper name of the class;
5076 otherwise, it creates a new class.
5077 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5078 of the UNBOUND-SLOT condition to the name of the slot.
5079 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5080 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5081 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5082 SLOT-MAKUNBOUND in the specified fashion.
5084 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5085 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5086 cross-compilation host. As a consequence, we can now bootstrap our
5087 way up to SBCL starting with a bare gcc toolchain and human-readable
5088 source code (first the source to CLISP, then the source to SBCL).
5089 * A contributed module containing a partial implementation of the
5090 simple-streams interface has been included. (thanks to Rudi
5092 * A contributed module implementing the RFC1321 Message Digest
5093 Algorithm, known as MD5, has been included.
5094 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5095 no longer has any effect, as the code controlled by this feature
5096 has been deleted. (As far as we know, no-one has ever built using
5097 this feature, and its semantics were confused in any case).
5098 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5099 work on conditions (as required by the ANSI specification),
5100 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5101 expected behaviour on conditions. Users should note, however,
5102 that such behaviour is not required by the ANSI specification,
5103 and so use of this behaviour may render their code unportable.
5104 * fixed some bugs revealed by Paul Dietz' test suite:
5105 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5107 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5108 ** SXHASH on condition objects no longer returns NIL.
5109 ** :ALLOCATION :CLASS slots are better treated; their values are
5110 updated on class redefinition, and initforms inherited from
5111 superclasses are applied.
5112 ** REMOVE-METHOD returns its generic function argument even when
5113 no method was removed.
5114 ** SHARED-INITIALIZE now initializes the values of the requested
5115 slots, including those with :ALLOCATION :CLASS.
5116 ** ALLOCATE-INSTANCE now works on structure classes defined via
5117 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5119 ** SLOT-EXISTS-P now works on conditions, as well as structures
5121 ** MAKE-LOAD-FORM now has the required methods on
5122 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5123 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5124 keyword, and now implements the SLOT-NAMES argument.
5125 ** methods with &OPTIONAL arguments no longer allow too many
5126 arguments to be passed in the call without error.
5127 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5128 option is consistent with the required arguments of the generic
5129 function lambda list.
5130 * bug fix: REQUIRE accepts a string designator. (Thanks to
5132 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5133 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5134 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5135 * bug fix: The compiler now checks for duplicated variables in macro
5137 * bug fix: SETQ on globals returns the correct value.
5138 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5139 not a COMPILER-ERROR (followed by some other strange error on
5140 choosing the CONTINUE restart).
5141 * bug fix: make.sh and friends are now more consistent in the way that
5142 they look for GNU "make".
5144 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5145 * experimental native threads support (on x86 Linux >=2.4 only).
5146 This is not compiled in by default: you need to add :SB-THREAD to
5147 the target features. See the "Beyond ANSI" chapter of the manual
5149 * fix for longstanding nonANSIism: The old distinction between
5150 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5151 The return value from CL:FIND-CLASS is now a CLOS class, and
5152 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5153 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5154 * An interface to the MetaObject Protocol, as described in Kiczales,
5155 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5156 MIT Press, 1991, is available from the SB-MOP package.
5157 * incompatible change: the SB-PCL package should now be considered
5158 a private implementation detail, and no longer a semi-private MOP
5160 * minor incompatible change: due to rearrangement for threads, the
5161 control stack and binding stack are now allocated at arbitrary
5162 addresses instead of being hardcoded per-port. Users affected by
5163 this probably have to be doing advanced things with shared
5164 libraries, and will know who they are.
5165 * minor incompatible change: Previously, all --eval forms used were
5166 processed with READ before any of them were processed with EVAL.
5167 Now each --eval form is processed with both READ and EVAL before
5168 the next --eval form is processed. (Thus package operations like
5169 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5170 work as the user might reasonably expect.)
5171 * minor incompatible change: *STANDARD-INPUT* is now only an
5172 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5174 * minor incompatible change: Y-OR-N-P is now character-oriented,
5175 not line oriented. Also, YES-OR-NO-P now works without errors.
5176 (thanks to Antonio Martinez)
5177 * sb-aclrepl module improvements: an integrated inspector, added
5178 repl features, and a bug fix to :trace command.
5179 * Known functions, which cannot be open coded by the backend, are
5180 considered to be able to check types of their arguments. (fixing
5181 a bug report by Nathan J. Froyd)
5182 * fixed a bug in computing method discriminating functions: It is
5183 now possible to define methods specialized on classes which have
5184 forward-referenced superclasses. (thanks to Gerd Moellmann)
5185 * fixed evaluation order in optional entries (reported by Gilbert
5187 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5188 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5189 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5190 required-by-AMOP NAME argument, as well as CLASS and
5191 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5192 * fixed bug 20: DEFMETHOD can define methods using names that are
5193 not the proper names of classes to designate class specializers.
5194 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5195 Unix file descriptors, instead of blowing up. (thanks to Antonio
5197 * Garbage collection refactoring: user-visible change is that a
5198 call to the GC function during WITHOUT-GCING will not do garbage
5199 collection until the end of the WITHOUT-GCING. If you were doing
5200 this you were probably losing anyway.
5201 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5202 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5203 TYPEP the latter but not the former.
5204 * The compiler issues a full WARNING for calls to undefined functions
5205 with names from the CL package.
5206 * MAP-INTO for a vector destination is open coded. (reported by
5207 Brian Downing on c.l.l)
5208 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5209 documentation string.
5210 * fixed some bugs revealed by Paul Dietz' test suite:
5211 ** COPY-ALIST now signals an error if its argument is a dotted
5213 ** Condition slots are now accessed more correctly in the presence
5214 of multiple initargs for a given slot.
5215 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5216 exclude restarts of the same name associated with a different
5218 ** DEFCLASS of forward-referenced classes with another
5219 forward-referenced class in the superclasses list no longer
5221 ** Condition slots are now initialized once each, not multiple
5222 times. (thanks to Gerd Moellmann)
5223 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5225 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5226 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5227 arguments contain duplicated elements.
5228 ** RESTART-CASE understands local macros.
5229 ** RESTART-CASE associates exactly its own restarts with a condition.
5230 ** ENDP in safe mode checks its argument to be of type LIST.
5231 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5232 in question is unbound.
5233 ** Optimized MAKE-INSTANCE functions no longer cause internal
5234 assertion failures in the presence of duplicate initargs.
5235 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5236 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5237 propagated even in the ctor optimized implementation of
5239 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5241 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5242 * a better implementation of SXHASH on (simple) bit vectors,
5243 measured both in execution speed and in distribution of results
5244 over the positive fixnums, has been installed. Likewise, a better
5245 implementation of EQUAL for simple bit vectors is now available.
5246 * fixed CEILING optimization for a divisor of form 2^k.
5247 * fixed bug 240 (emitting extra style warnings "using the lexical
5248 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5249 by Antonio Martinez)
5250 * fixed SXHASH, giving different results for NIL depending on type
5251 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
5252 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
5253 variable. (found by Rolf Wester)
5254 * SBCL does not ignore type declarations for special
5255 variables. (reported by rif on c.l.l 2003-03-05)
5256 * some bug fixes in contrib/sb-aclrepl/
5257 * fixed some bugs revealed by Paul Dietz' test suite:
5258 ** a bug in the CONS type specifier, whereby the CAR and CDR
5259 types got intertwined, has been fixed;
5260 ** the type system is now able to reason about the interaction
5261 between INTEGER and RATIO types more completely;
5262 ** APPEND, [N]REVERSE and NRECONC check that those their
5263 arguments, which must be proper lists, are really so;
5264 ** An array specialized to be unable to hold elements has been
5265 implemented, as required -- yes, really -- by ANSI;
5266 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5267 on malformed property lists;
5269 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5270 * incompatible packaging change: in line with Unix convention,
5271 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5272 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5273 * REQUIRE and PROVIDE are now optionally capable of doing something
5274 useful. See the documentation string for REQUIRE.
5275 * infrastructure for a managed SBCL contrib system: contributed
5276 modules in this release include:
5277 ** the ASDF system definition facility;
5278 ** an interface to the BSD Sockets API;
5279 ** an ACL-like convenience interface to the repl;
5280 (thanks to Kevin Rosenberg)
5281 ** an implementation of ROTATE-BYTE, with efficient implementation
5283 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5284 gives a closer approximation to the right answer than previously.
5285 (thanks to Raymond Toy)
5286 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5287 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5288 optional environment arguments, as required by ANSI.
5289 * fixed bugs in other functions taking environment objects, allowing
5290 calls with an explicit NIL environment argument to be compiled
5292 * fixed bug 228: primary return values from
5293 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5294 COMPILE or FUNCTION.
5295 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5296 :TYPE will no longer signal errors on innocuous objects.
5297 * fixed bug 231b: SETQ is better at respecting type declarations in
5298 the lexical environment.
5299 * fixed a bug in DEFCLASS: classes named by symbols with no or
5300 unprintable packages can now be defined.
5301 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5302 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5303 * fixed compiler failure related to checking types of functions.
5304 (reported by Robert E. Brown)
5305 * the compiler is now much more consistent in its error-checking
5306 treatment of bounding index arguments to sequence functions: in
5307 (SAFETY 3) code, errors will be signalled in almost all cases if
5308 invalid sequence bounding indices are passed to functions defined
5309 by ANSI to operate on sequences.
5310 * fixed a bug in the build procedure: documentation of SBCL-specific
5311 packages is now preserved and available in the final Lisp image.
5312 * lifted FDEFINITION lookup out of loops in the implementation of
5313 many list operations. (thanks to Robert E. Brown)
5314 * fixed a bug in the reader: the #n# reader macro now works for
5315 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5316 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5317 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5318 E. Brown and Tony Martinez respectively)
5319 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5320 SLOT-BOUNDP: in particular, it is now able to optimize them much
5321 better, and is now not vulnerable to having packages renamed.
5322 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5323 always called when a slot is not present in an instance. (thanks
5325 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5326 longer signal an error on unreading a character following EOF on
5327 the previous constituent stream. (thanks to Tony Martinez)
5328 * fixed some bugs revealed by Paul Dietz' test suite:
5329 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5330 not just nonnegative fixnums;
5331 ** the logical bit-array operators such as BIT-AND now accept an
5332 explicit NIL for their "opt-arg" argument (to indicate a
5333 freshly-consed result bit-array);
5334 ** ELT now signals an error on an invalid sequence index in safe
5336 ** the type system is now cleverer about negations of numeric
5337 types, and consequently understands the BIGNUM and RATIO types
5339 ** the type system is now cleverer about the interaction between
5340 INTEGER and RATIO types: while bugs still remain, many more
5341 cases are accurately computed;
5342 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5343 if it is in the last clause;
5344 ** CONSTANTLY now correctly returns a side-effect-free function in
5346 ** DECLARE is no longer treated as a special-operator; in
5347 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5348 * incremented fasl file version number due to the change in the
5349 DEFSTRUCT-SLOT-DESCRIPTION structure.
5351 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5352 * minor incompatible change: code processed by the "interpreter" or
5353 EVAL now has a compilation optimization policy of (DEBUG 2)
5354 (changed from (DEBUG 1)) to improve debuggability of interactive
5355 development, and to allow the use of the debug RETURN command in
5357 * an experimental implementation of the RETURN command for the
5358 debugger has been included. (thanks to Frederik Kuivinen)
5359 * fixed bug 62: constraints were not propagated into a loop.
5360 * fixed bug in embedded calls of SORT (reported and investigated by
5362 * fixed some bugs revealed by Paul Dietz' test suite:
5363 ** printing and reading of arrays with some dimensions having
5364 length 0 (thanks to Gerd Moellmann);
5365 ** BOA constructor with &AUX argument without a default value does
5366 not cause a type error;
5367 ** CONSTANTP now returns true for all self-evaluating objects.
5369 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5370 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5371 accessors that are related by inheritance, as specified in the
5372 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5373 Valtteri Vuorikoski)
5374 * The compiler is now able to inline functions that were defined in
5375 a complex lexical environment (e.g. inside a MACROLET).
5376 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5378 * Support for the upcoming FreeBSD-5.0 release has been included.
5379 (thanks to Dag-Erling Smorgrav)
5380 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5381 effect when it is not in a toplevel context.
5382 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5383 stand a better chance of being correct. (thanks to Gerd
5385 * fixed bug in COERCE, which now signals an error on coercing a
5386 rational to a bounded real type which excludes the expected
5388 * The compiler is now able to derive types more accurately from the
5389 COERCE and COMPILE functions.
5390 * fixed bug 223: functional binding is considered to be constant
5391 only for symbols in the CL package.
5392 * fixed bug 231: SETQ did not check the type of a variable being set
5393 (reported by Robert E. Brown)
5394 * A new optimization for MAKE-INSTANCE has been included, fixing
5395 various bugs (including relating to :ALLOCATION :CLASS slots and
5396 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5398 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5399 ** As required by ANSI, LOOP now disallows anonymous collection
5400 clauses such as COLLECT I in conjunction with aggregate boolean
5401 clauses such as THEREIS (= I 1);
5402 ** LOOP now signals an error when any variable is reused in the
5403 same loop (including the potentially useful construct analogous
5404 to WITH A = 1 WITH A = (1+ A);
5405 ** IT is only a special loop symbol within the first clause of a
5406 conditional loop clause;
5407 ** LOOP with a typed iteration variable over a hashtable now
5408 signals a type error iff it should.
5409 * fixed some other bugs revealed by Paul Dietz' test suite:
5410 ** FILE-STREAM now names the class previously known as FD-STREAM;
5411 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5412 argument) no longer signals an error;
5413 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5414 of the slot symbol, rather than using the current package
5415 ((:CONC-NAME "") continues to intern the slot's name in the
5417 * incremented fasl file version number, because of the incompatible
5418 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5419 of the new implementation of DEFINE-COMPILER-MACRO.
5421 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5422 * Support for building SBCL for MIPS platforms running in
5423 little-endian mode has now been checked in, and basic
5424 functionality on said platforms verified.
5425 * minor incompatible change: PCL now records the pathname of a file
5426 in which methods and the like are defined, rather than its
5428 * minor incompatible change: TRUENAME now considers the truename of
5429 a file naming a directory to be the pathname with :DIRECTORY
5430 component indicating that directory.
5431 * minor incompatible change: a NAMED clause in the extended form of
5432 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5433 reason for the previous behaviour is unclear.
5434 * more systematization and improvement of CLOS and MOP conformance
5435 in PCL (thanks to Gerd Moellman and Pierre Mai):
5436 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5438 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5439 primary methods with no specializers;
5440 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5442 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5443 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5444 FORWARD-REFERENCED-CLASSes; error reporting on
5445 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5447 ** SXHASH on CLOS instances now uses a slot internal to the
5448 instance to return different numbers on distinct instances,
5449 while preserving the same return value through invocations of
5451 ** DEFMETHOD signals errors when methods with longer incongruent
5452 lambda lists are added to generic functions;
5453 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5454 CLASS, as specified in AMOP;
5455 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5456 on the order returned by the primary method for classes of
5457 class STANDARD-CLASS;
5458 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5459 * fixed some bugs shown by Paul Dietz' test suite:
5460 ** DOLIST puts its body in TAGBODY;
5461 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5463 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5464 value producing form;
5465 ** if more variables are given to PROGV than values, extra
5466 variables are bound and made to have no value;
5467 ** NSUBSTITUTE on list arguments gets the right answer with
5469 ** ELT signals an error of type TYPE-ERROR when the index argument
5470 is not a valid sequence index;
5471 ** LOOP signals (at macroexpansion time) an error of type
5472 PROGRAM-ERROR when duplicate variable names are found;
5473 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5474 ** FUNCALL of special-operators now cause an error of type
5476 ** PSETQ now works as required in the presence of side-effecting
5477 symbol-macro places;
5478 ** NCONC accepts any object as its last argument;
5479 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5481 ** loop-for-as-package does not require a package to be explicitely
5483 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5485 * fixed bug 166: compiler preserves "there is a way to go"
5486 invariant when deleting code.
5487 * fixed bug 172: macro lambda lists with required arguments after
5488 &REST arguments now cause an error to be signalled. (thanks to
5490 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5491 bug. (thanks to Matthew Danish)
5492 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5494 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5495 arguments are lexically rebound. (thanks to Gerd Moellmann and
5497 * fixed bug 194: error messages are now more informative when there
5498 is no primary method applicable in a call to a generic
5499 function. (thanks to Gerd Moellmann)
5500 * fixed bug in command line argument checking (thanks to Julian
5502 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5503 (thanks to Matthew Danish)
5504 * incremented fasl file version number, because of the
5505 SXHASH-related changes in the layout of CLOS data structures
5507 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5508 * minor incompatible change: The runtime (the Unix executable named
5509 "sbcl") is now much pickier about the .core files it will load.
5510 Essentially it now requires .core files to descend from the same
5511 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5512 as the runtime does. (The intent is to prevent the crashes which
5513 can occur, and which can even be reported as mysterious failures,
5514 when people patch the sources or change the build parameters
5515 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5516 sbcl and .core files.)
5517 * fixed bug: VALUES-LIST is no longer optimized away.
5518 * fixed bug 142: The FFI conversion of C string values to Lisp
5519 string values no longer conses excessively. (thanks to Nathan
5520 Froyd porting Raymond Toy's fix to CMU CL)
5521 * began to systematize and improve MOP conformance in PCL (thanks to
5522 Nathan Froyd, Gerd Moellman and Pierre Mai):
5523 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5525 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5526 ** FINALIZE-INHERITANCE is now called on class finalization;
5527 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5528 argument precedence order.
5529 * fixed bug 202: The compiler no longer fails on functions whose
5530 derived types contradict their declared type.
5531 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5532 so it can be non-toplevel.
5533 * The fasl file version number has changed (because of the new
5534 implementation of DEFMACRO).
5535 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5536 safe code, that any length requirement by their type-specifier
5537 argument is valid. The exceptions to this are described in bug
5539 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5540 functions now check the types of their inputs as required by ANSI.
5541 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5542 introduced symbol is DECLAREd to be SPECIAL.
5543 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5544 * fixed bug: :COUNT argument to sequence functions may be negative
5545 * fixed bug: body of DO-SYMBOLS may contain declarations
5546 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5547 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5548 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5549 symbol macro only once
5550 * fixed printing of call frame when argument list is unavailable
5551 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5552 * compiler no longer signals WARNING on unknown keyword
5555 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5556 * A beta-quality port to the mips architecture running Linux,
5557 based on the old CMUCL backend, has been made. It has been tested
5558 on a big-endian kernel, and works sufficiently well to be able to
5559 rebuild itself; it has not been tested in little-endian mode.
5560 * fixed an inconsistency between gencgc.c and purify.c which made
5561 dumping/loading .core files unreliable
5562 * fixed bug 120a: The compiler now deals correctly with IFs where
5563 the consequent is the same as the alternative, instead of
5564 misderiving the return type. (thanks to Alexey Dejneka)
5565 * fixed bug 113: Logical pathnames are now dumpable (the logical
5566 host is resolved at load-time, throwing an error if it is not
5568 * fixed bug 174: FORMAT's error message is slightly clearer when a
5569 non-printing character is used in a format directive.
5570 * fixed several bugs in compiler checking of type declarations, i.e.
5571 violations of the Python "declarations are assertions" principle
5572 (thanks to Alexey Dejneka)
5573 * fixed several bugs in PCL's error checking (thanks to Gerd
5575 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5577 * fixed bug in compilation of functions as first class values
5578 (thanks to Antonio Martinez-Shotton)
5579 * The compiler's handling TYPE-ERRORs which it can prove will
5580 inevitably happen at runtime has been cleaned up and corrected
5581 in several ways. (thanks to Alexey Dejneka)
5582 * improved argument type checking for various basic arithmetic
5583 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5584 lavished on them in the past that they can be compiled in many
5585 ways in different special cases
5586 * fixed bug 181: compiler checks validity of user supplied type
5588 * cleaned up code flushing in optimization: Function calls which
5589 should signal errors for safety purposes (e.g. which ANSI says
5590 should signal errors when their arguments are of incorrect type)
5591 are no longer optimized away.
5592 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5593 * incremented fasl file version number, because changes in the
5594 implementation of sequence functions like COERCE caused
5595 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5596 in old inline expansions) to become undefined. (Actually these
5597 changes were later undone, so we might very well be binary
5598 compatible with 0.7.7 after all, but leaving the version number
5599 incremented seemed like the simplest and most conservative
5602 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5603 * An alpha-quality port to the parisc architecture running Linux,
5604 based on the old CMUCL backend, has been made. This, even more so
5605 than the other backends, should be considered still a work in
5606 progress; known problems include that the Linux kernel in 64-bit
5607 mode does not propagate the correct sigcontext structure to
5608 userspace, and consequently SBCL on a parisc64 kernel will not
5610 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5611 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5612 suppressed.) Also now that the compiler is looking at declarations
5613 in the environment, it checks optimization declarations as well,
5614 and suppresses inlining when (> DEBUG SPEED).
5615 * More fixes have been made to treatment of floating point exception
5616 treatment and other Unix signals. In particular, floating point
5617 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5618 * The detection and handling of control stack exhaustion (infinite
5619 or very deeply nested recursion) has changed. Stack exhaustion
5620 detection is now done by write-protecting pages at the OS level
5621 and applies at all optimization settings; when found, a
5622 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5623 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5624 be caught using IGNORE-ERRORS.
5625 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5626 correctly when transforming recursive LABELS functions to LETs.
5627 (thanks to Alexey Dejneka)
5628 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5629 that are names of constants or global variables.
5630 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5631 alien routines with docstrings.
5632 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5633 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5635 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5636 (thanks to Eric Marsden)
5637 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5638 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5639 * Bug fix: The SPARC backend can now compile functions involving
5640 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5641 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5642 to a functions expecting a PATHNAME-DESIGNATOR.
5643 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5644 lambda lists. (thanks to Alexey Dejneka)
5645 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5646 functions so that EXPORTing the name of the class doesn't cause
5647 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5648 to Antonio Martinez for reporting this)
5649 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5650 constant-folded without failing an assertion. (thanks to Einar
5651 Floystad Dorum for reporting this)
5652 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5653 types are now dealt with more correctly by the compiler.
5654 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5655 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5656 behaviour analogous to RENAME-FILE. This puts its behaviour more
5657 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5659 * The fasl file version number has changed again. (because of the
5660 bug fix involving the names of PCL MAKE-INSTANCE functions)
5662 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5663 * bug fix: Floating point exceptions are treated much more
5664 consistently on the x86/Linux and PPC/Linux platforms.
5665 * Array initialization with :INITIAL-ELEMENT is now much faster for
5666 cases when the compiler cannot open code the array creation, but
5667 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5668 array accesses have also seen a speed increase.
5669 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5670 specified. (This was at the root of some bad interactions between
5671 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5673 * bug fix: Internal error arguments for undefined functions are now
5674 computed correctly on the PPC/Linux platform.
5675 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5676 Raymond Toy's patch for CMU CL)
5677 * Support for the Solaris 9 operating environment has been included
5678 (thanks to Daniel Merritt)
5679 * A very ugly but hopefully complete draft of the missing FFI chapter
5680 of the manual has been created by reformatting the corresponding
5681 CMU CL manual chapter into (currently very ugly and incoherent)
5682 DocBook and bringing it up to date for SBCL behavior. Thus, the
5683 manual is now essentially complete, at least by my extreme
5684 once-and-only-once standards, whereby it's acceptable to refer to
5685 the doc strings of SB-EXT functions as the primary documentation.
5686 * The fasl file version number has changed again, due to cleanup of
5687 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5688 is no longer a static symbol.)
5690 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5691 * SBCL now builds with OpenMCL (version 0.12) as the
5692 cross-compilation host; also, more progress has been made toward
5693 bootstrapping under CLISP.
5694 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5696 * bug 158 fixed: The compiler can now deal with integer loop
5697 increments different from 1; fixing this turned out also to fix
5699 * bug 169 fixed: no more bogus warnings about using lexical bindings
5700 despite the presence of perfectly good SPECIAL declarations (thanks
5701 to David Lichteblau)
5702 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5703 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5704 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5706 * bug 180 fixed: Method combination specifications no longer ignore
5707 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5708 * bug fix: Structure type predicate functions now check their argument
5709 count as they should.
5710 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5711 correctly. (thanks to Pierre Mai)
5712 * minor incompatible change: The --noprogrammer option is deprecated
5713 in favor of the new --disable-debugger option, which is very similar.
5714 (The major difference is that it takes effect at a slightly different
5715 time at startup, causing handling of errors in --sysinit and
5716 --userinit files will be affected differently.) The
5717 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5718 been added to allow this functionality to be controlled from ordinary
5719 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5720 maintainers, who might want to run non-interactive scripts to
5721 build SBCL cores which will later be used interactively.)
5722 * minor incompatible change: The LOAD function no longer, when given
5723 a wild pathname to load, loads all files matching that pathname.
5724 Instead, an error of type FILE-ERROR is signalled.
5726 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5727 * bug 147 fixed: The compiler preserves its block link/count
5728 invariants more correctly now so that it doesn't crash. (thanks
5730 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5732 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5733 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5734 no-value-for-this-character as NIL (as specified by ANSI).
5735 * HOST-NAMESTRING on physical pathnames now returns a string that is
5736 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5737 (thanks to Christophe Rhodes)
5738 * The Alpha port handles icache flushing more correctly. (thanks to
5740 * More progress has been made toward bootstrapping under CLISP. (thanks
5741 to Christophe Rhodes)
5742 * The fasl file format has changed again, because dynamic loading
5743 on OpenBSD (which has non-ELF object files) motivated some cleanups
5744 in the way that foreign symbols are transformed and passed around.
5745 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5746 is no longer treated as whitespace by the reader, but instead as
5747 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5748 |A
\7fB|, instead of A as it used to.
5750 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5751 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5752 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5753 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5754 this as of 0.7.1.45, but was left out of the previous news section
5755 (thanks to Dan Barlow)
5756 * SBCL now runs on the Solaris operating system on SPARC architectures
5757 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5758 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5759 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5760 * SPARC backend cleanups, allowing builds of cores optimized for V8
5761 and V9 SPARCS, and also emission of code targeted to a particular
5762 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5764 * SBCL is closer to bootstrapping under CLISP, thanks to various
5765 fixes by Christophe Rhodes.
5766 * The fasl file format has changed again, to allow the compiler's
5767 INFO database to support symbol macros.
5768 * The user manual (in doc/) is formatted into HTML more nicely.
5769 (thanks to coreythomas)
5770 * The system is smarter about SUBTYPEP relationships, especially
5771 those involving NOT types (including types such as ATOM which are
5772 represented internally using NOT types). Thus SUBTYPEP is less
5773 likely to return (VALUES NIL NIL) in general, and in particular
5774 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5776 * The fasl file format has changed again, because the internal
5777 representation of types now includes a new slot to support the new
5778 SUBTYPEP-of-NOT-types logic.
5779 * (not a change in the main branch of SBCL, but a related prototype
5780 which can hopefully be merged into the main branch of SBCL in the
5781 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5782 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5783 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5784 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5785 dispatch macro character combinations. (thanks to Alexey Dejneka)
5786 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5787 that superficially look like logical namestrings correctly.
5788 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5790 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5791 default supplied-p) for &optional and &key arguments. (thanks to
5794 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5795 * incompatible change: The compiler is now less aggressive about
5796 tail call optimization, doing it only when (> SPACE DEBUG) or
5797 (> SPEED DEBUG). (This is an incompatible change because there are
5798 programs which relied on the old CMU-CL-style behavior to optimize
5799 away their unbounded recursion which will now die of stack overflow.)
5800 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5801 for non-GENCGC systems has been increased to 20M (since that
5802 seems much closer to the likely performance optimum for modern
5803 systems than the old 4M value was)
5804 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5805 and *DEBUG-PRINT-LEVEL*
5806 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5807 of CMU CL's support for SPARC, and various endianness and other
5808 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5809 * new syntactic sugar for the Unix command line: --load foo.bar is now
5810 an alternate notation for --eval '(load "foo.bar")'.
5812 ** The system now detects stack overflow and handles it gracefully,
5813 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5814 optimization settings. (This is a good thing in general, and
5815 its introduction in this version should be particularly timely
5816 for anyone whose code fails because of suppression of tail
5818 ** The system now hunts for the C variable "environ" in a more
5819 devious way, to avoid segfaults when the C library version differs
5820 between compile time and run time. (thanks to Christophe Rhodes)
5821 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5822 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5823 ** The compiler no longer issues bogus style warnings for undefined
5824 classes in the same source file as the DEFCLASSes which defined
5825 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5827 ** fixes in CONDITION class precedence list for undefined function
5828 errors (thanks to Alexei Dejneka)
5829 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5830 correctly. (thanks to Dan Barlow)
5831 ** portability fixes aiming at bootstrapping under CLISP (thanks
5832 to Dave McDonald and Christophe Rhodes)
5833 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5834 ** fixes in type translation and and type inference (thanks to
5836 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5837 ** various fixes in the new ports (thanks to Dan Barlow)
5838 * several changes related to debugging:
5839 ** suppression of tail recursion, as noted above
5840 ** stack overflow detection, as noted above
5841 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5842 is now the default. (For some time encapsulation has been more
5843 reliable than the breakpoint-based :ENCAPSULATE NIL
5844 implementation, at least on X86 systems; and I just noticed that
5845 encapsulation also seems closer to the spirit of the ANSI
5848 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5850 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5851 up properly again. (There was a packaging bug in 0.7.0 which
5852 left their definitions in SB-SYS::LOAD-FOREIGN and
5853 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5854 vital for most things which interface to C-level interfaces,
5855 like extensions working with sockets or databases or
5856 Perl-compatible regexes or whatever, and the need to fix
5857 this bug is the main reason that 0.7.1 was released so
5859 ** DEFGENERIC is now choosier about the methods it redefines, so that
5860 reLOADing a previously-LOADed file containing DEFGENERICs does
5861 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5862 cycle now works as it should. (thanks to Alexey Dejneka)
5863 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5864 fixed by Christophe Rhodes. (He actually submitted this patch
5865 months ago, and I delayed until after 0.7.0.)
5866 ** Bug 111 (internal compiler confusion about runtime checks on
5867 FUNCTION types) was fixed by Alexey Dejneka.
5868 * Some internal cleanups (getting rid of variables which aren't
5869 needed now that the byte interpreter is gone) caused the fasl
5870 file format number to change again.
5872 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5873 * major incompatible change: The default fasl file extension, i.e. the
5874 default extension for files produced by COMPILE-FILE, has changed
5875 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5877 ** There are many changes in the implementation of the compiler.
5878 SBCL is now essentially a compiler-only implementation of ANSI
5879 Common Lisp. EVAL still "interprets" a few special cases, but
5880 almost all the interesting cases are handled by creating
5881 a LAMBDA expression, calling COMPILE on it, then calling
5882 FUNCALL on the result.
5883 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5884 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5885 Since the code is newer, there might still be some new bugs
5886 (though not as many as before Martin Atzmueller's fixes:-). But
5887 the new code is substantially simpler and clearer, and hopefully
5888 any remaining bugs will be simpler, less fundamental, and more
5889 fixable then the bugs in the old code.
5890 ** The revised compiler is still a little unsteady on its feet.
5892 *** The debugging information it produces (particularly the names
5893 of FUNCTION objects) is sometimes much less useful than what
5894 the old compiler produced.
5895 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5896 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5897 within a MACROLET) has been temporarily weakened.
5898 ** There are new compiler optimizations for various functions:
5899 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5900 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5901 *** the math functions TRUNCATE, FLOOR, and CEILING
5902 *** the function-of-all-trades COERCE
5903 Mostly these should be transparent, but there's one
5904 potentially-annoying problem (bug 117): when the compiler
5905 inline-expands a function and does type analysis on the result,
5906 it can create control paths which have type mismatches, and
5907 when it can't prove that those control paths aren't taken,
5908 it will issue WARNINGs about the type mismatches. This is
5909 a particular problem in practice for the new sequence functions.
5910 It's not clear how this should be fixed, and for now, a
5911 workaround is given in the entry for 117 in the BUGS file.
5912 ** (Because of the interaction between the two previous items --
5913 occasional inlining problems and new inline expansions -- some
5914 of the new sequence function optimizations won't really kick in
5915 completely until debugging information, and then inlining, are
5916 straightened out in some future version.)
5917 * minor incompatible changes:
5918 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5919 DIRECTORY no longer implicitly promotes NIL slots of its
5920 pathname argument to :WILD. In particular, when you ask for the
5921 contents of a directory (which you used to be able to do without
5922 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5923 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5924 ** changes in behavior that ANSI explicitly defines to be
5925 implementation dependent:
5926 *** The new compiler-only implementation still conforms with ANSI,
5927 but acts a little different than before. Besides the obvious
5928 changes in performance tradeoffs (that the cost per form passed
5929 to EVAL has gone up, and the cost per form executed by EVAL
5930 has gone down), the behavior of the system changes a little
5931 because there are no longer any interpreted function objects.
5932 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5933 e.g. doing COMPILE on the output of interactive DEFUN is
5935 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5937 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5938 has changed from (:CL) to NIL.
5939 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5940 e.g. #\Newline and #\Tab, don't have names specified in the
5941 ANSI Common Lisp standard, is now based on their ASCII symbolic
5942 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5943 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5944 are no longer used for output.
5945 ** changes in internal implementation constants:
5946 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5947 4 million. (If your application spends a lot of time GCing and
5948 you have a lot of RAM, you might want to experiment with
5949 increasing it even more.)
5950 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5951 However, almost all old code should still continue to work without
5952 immediate update, as SB-C-CALL is now a (deprecated) nickname
5954 ** Old operator names in the style DEF-FOO are now deprecated in
5955 favor of new corresponding names DEFINE-FOO, for consistency with
5956 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5957 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5958 internal symbols, but a few supported extensions like
5959 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5960 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5961 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5962 etc. as you get deeper into recursive calls to the debugger
5963 command loop, instead of the old "5]", "5]]", "5]]]"
5964 sequence. (I was motivated to do this when squabbles between
5965 ILISP and SBCL left me very deeply nested in the debugger. In the
5966 short term, this change will probably provoke more ILISP/SBCL
5967 squabbles, but hopefully it will be an improvement in the long run.)
5968 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5969 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5970 function, since declaiming return types involving aliens is
5971 (1) annoyingly messy to do by hand and (2) vital to efficient
5972 compilation of code which calls such functions.
5973 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5974 longer reexported by the SB-EXT package. They're solely useful
5975 for alien code, so it seems more logical that you should get
5976 them from the SB-ALIEN package, not in SB-EXT.
5977 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5978 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5979 features. Instead, the code that they used to control is always
5980 built into the system.
5981 * many other bug fixes
5982 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5983 advantage of the new EVAL-WHEN stuff and to clean them up in
5984 general, and they are now more ANSI-compliant in a number of
5985 ways. Martin Atzmueller is responsible for a lot of this.
5986 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5988 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5989 *** correct ERROR type for various file operations
5990 *** some fixes for Lisp streams
5991 *** DEFMETHOD syntax checking
5992 *** changing old weird representation of debug information as
5993 strings (which, among their other deficiencies, don't transform
5994 correctly when you rename packages, and don't change their
5995 print representation when you change things like *PACKAGE*
5996 and *PRINT-LENGTH*) to symbols and lists of symbols
5997 He also made several improvements and fixed several bugs in DESCRIBE.
5998 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
6000 *** misbehavior of WRITE-STRING/WRITE-LINE
6001 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
6002 and several other LOOP problems as well
6003 *** DIRECTORY when similar filenames are present
6004 *** DEFGENERIC with :METHOD options
6005 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
6006 *** bug in the optimization of ARRAY-ELEMENT-TYPE
6007 *** argument ordering in FIND with :TEST option
6008 *** mishandled package designator argument in APROPOS-LIST
6009 *** various problems in the backquote readmacro
6010 *** a bug in APROPOS
6011 *** probably some others that I'm not describing very well here,
6012 since the CVS log documents them by reference to sbcl-devel
6013 messages, and the SourceForge archives aren't working well.:-(
6014 ** Dan Barlow improved the Alpha port (and is making progress on the
6015 PPC port, for those of you who think different).
6016 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
6017 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
6018 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
6019 continues to work on the SPARC port (for those of you in a position
6020 to look down upon our little PC-compatible boxes from a great height).
6021 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
6022 and uses that copy, rather than the current dynamic value, when
6023 it's trying to decide whether to truncate output. Thus e.g.
6024 (let ((*print-lines* 50))
6025 (pprint-logical-block (stream nil)
6027 (let ((*print-lines* 8))
6028 (print (aref possiblybigthings i) stream)))))
6029 should now truncate the logical block only at 50 lines, instead of
6030 often truncating it at 8 lines, as it did before.
6031 * The doc/cmucl/ directory, containing old CMU CL documentation
6032 from the time of the fork, is no longer part of the base system.
6033 SourceForge has shut down its anonymous FTP service, and with it
6034 my original plan for distributing the old CMU CL documentation
6035 there. For now, if you need these files you can download an old
6036 SBCL source release and extract them from it.
6037 * The fasl file version number changed again, for dozens of reasons,
6038 some of which are apparent above.
6040 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
6041 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
6042 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
6043 patch, so that DISASSEMBLE output is much nicer.
6044 * The code in the SB-PROFILE package now seems reasonably stable.
6045 I still haven't decided what the final interface should look like
6046 (I'd like PROFILE to interact cleanly with TRACE, since both
6047 facilities use function encapsulation) but if you have a need
6048 for profiling now, you can probably use it successfully with
6049 the current CMU-CL-style interface.
6050 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
6051 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
6052 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
6053 link now returns the dangling link itself, and for similar
6054 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
6055 link itself. (In these cases the old code signalled an error and
6056 looped endlessly, respectively.) Thus, DIRECTORY now works even
6057 in the presence of dangling and cyclic symbolic links.
6058 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
6059 is now a supported extension again, since the consensus on
6060 sbcl-devel was that it can be useful for ordinary development
6061 work, not just for debugging SBCL itself.
6062 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
6063 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
6064 that currently-defined functions might be redefined later with
6065 different return types.
6066 * Hash tables can be printed readably, as inspired by CMU CL code
6067 of Eric Marsden and SBCL code of Martin Atzmueller.
6068 * better error handling in CLOS method combination, thanks to
6069 Martin Atzmueller porting Pierre Mai's CMU CL patches
6070 * more overflow fixes for >16Mbyte I/O buffers
6071 * A bug in READ has been fixed, so that now a single Ctrl-D
6072 character suffices to cause end-of-file on character streams.
6073 In particular, now you only need one Ctrl-D at the command
6074 line (not two) to exit SBCL.
6075 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6077 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6078 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6079 does the right thing.
6080 * The implementation of some type tests, especially for CONDITION
6081 types, is now tidier and maybe faster, due to CMU CL code
6082 originally by Douglas Crosher, ported by Martin Atzmueller.
6083 * Some math functions have been fixed, and there are new
6084 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6085 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6086 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6087 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6088 likely to be built into sbcl-0.7.0.)
6089 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6090 CL, ported to SBCL by Martin Atzmueller)
6091 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6092 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6093 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6094 * There's a new slam.sh hack to shorten the edit/compile/debug
6095 cycle for low-level changes to SBCL itself, and a new
6096 :SB-AFTER-XC-CORE target feature to control the generation of
6097 the after-xc.core file needed by slam.sh.
6098 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6099 COMPILE-FILE is no longer supported, so that now every function
6100 gets an entry point, so that block compilation looks a little
6101 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6102 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6103 returns the number of bytes consed since the system started,
6104 rather than the number consed since the first time the function
6105 was called. (The new definition parallels ANSI functions like
6106 CL:GET-INTERNAL-RUN-TIME.)
6107 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6108 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6109 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6110 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6111 * Fasl file version numbers are now independent of the target CPU,
6112 since historically most system changes which required version
6113 number changes have affected all CPUs equally. Similarly,
6114 the byte fasl file version is now equal to the ordinary
6117 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6118 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6119 is no longer recognized. I apologize for this, because it was
6120 listed in SB-EXT as a supported extension, but I found that
6121 its existing behavior was poorly specified, as well as incorrectly
6122 specified, and it looked like too much of a mess to straighten it
6123 out. I have enough on my hands trying to get ANSI stuff to work..
6124 * many patches ported from CMU CL by Martin Atzmueller, with
6125 half a dozen bug fixes in pretty-printing and the debugger, and
6126 half a dozen others elsewhere
6127 * fixed bug 13: Floating point infinities are now supported again.
6128 They might still be a little bit flaky, but thanks to bug reports
6129 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6130 as flaky as they were.
6131 * The --noprogrammer command line option is now supported. (Its
6132 behavior is slightly different in detail from what the old man
6133 page claimed it would do, but it's still appropriate under the
6134 same circumstances that the man page talks about.)
6135 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6136 are now supported, and enabled by default. Thus, the compiler can
6137 handle many floating point and complex operations much less
6138 inefficiently. (Thus e.g. you can implement a complex FFT
6140 * The compiler now detects type mismatches between DECLAIM FTYPE
6141 and DEFUN better, and implements CHECK-TYPE more correctly, and
6142 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6143 thanks to patches from Martin Atzmueller.
6144 * various fixes to make the cross-compiler more portable to
6145 ANSI-conforming-but-different cross-compilation hosts (notably
6146 Lispworks for Windows, following bug reports from Arthur Lemmens)
6147 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6148 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6149 fixed thanks to Pierre Mai's CMU CL patches.
6150 * fixes to keep the system from overflowing internal counters when
6151 it tries to use i/o buffers larger than 16M bytes
6152 * fixed bug 45a: Various internal functions required to support
6153 complex special functions have been merged from CMU CL sources.
6154 (When I was first setting up SBCL, I misunderstood a compile-time
6155 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6156 * improved support for type intersection and union, fixing bug 12
6157 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6158 more obscure bugs as well
6159 * some steps toward byte-compiling non-performance-critical
6160 parts of the system, courtesy of patches from Martin Atzmueller
6161 * Christophe Rhodes has made some debian packages of sbcl at
6162 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6163 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6164 stable, but are nonetheless usable. When he's ready, I'd be happy
6165 to add them to the SourceForge "File Releases" section. (And if
6166 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6167 * new fasl file format version number (because of changes in
6168 internal representation of (OR ..) types to accommodate the new
6169 support for (AND ..) types, among other things)
6171 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6172 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6174 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6176 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6177 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6178 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6179 * DESCRIBE now works on structure objects again.
6180 * Most function call argument type mismatches are now handled as
6181 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6182 know whether the function will be redefined before the call is
6183 executed. (The compiler could flag local calls with full WARNINGs,
6184 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6185 it doesn't keep track of enough information to know whether calls
6186 are local in this sense.)
6187 * Compiler output is now more verbose, with messages truncated
6188 later than before. (There should be some supported way for users
6189 to override the default verbosity, but I haven't decided how to
6190 provide it yet, so this behavior is still controlled by the internal
6191 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6192 src/compiler/ir1util.lisp.)
6193 * Fasl file format version numbers have increased again, because
6194 support for the Gray streams extension changes the layout of the
6195 system's STREAM objects.
6196 * The Gray subclassable streams extension now works, thanks to a
6197 patch from Martin Atzmueller.
6198 * The full LOAD-FOREIGN extension (not just the primitive
6199 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6200 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6201 but like most other programs, it defaults to copying the Unix
6202 environment from the original process instead of starting the
6203 new process in an empty environment.
6204 * Extensions which manipulate the Unix environment now support
6205 an :ENVIRONMENT keyword option which doesn't smash case or
6206 do other bad things. The CMU-CL-style :ENV option is retained
6207 for porting convenience.
6208 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6209 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6211 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6213 * A patch from Martin Atzmueller seems to have solved the SIGINT
6214 problem, and as far as we know, signal-handling now works cleanly.
6215 (If you find any new bugs, please report them!)
6216 * The system no longer defaults Lisp source file names to types
6217 ".l", ".cl", or ".lsp", but only to ".lisp".
6218 * The compiler no longer uses special default file extensions for
6219 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6220 seems to expect a single default extension for all compiled code,
6221 and there's no compelling reason to try to stretch the standard
6222 to allow two different extensions.) Instead, byte-compiled files
6223 default to the same extension as native-compiled files.
6224 * Fasl file format version numbers have increased again, because
6225 a rearrangement of internal implementation packages made some
6226 dumped symbols in old fasl files unreadable in new cores.
6227 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6228 many fewer weird special cases.
6229 * Bug #17 (differing COMPILE-FILE behavior between logical and
6230 physical pathnames) has been fixed, and some related misbehavior too,
6231 thanks to a patch from Martin Atzmueller.
6232 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6233 by Tim Moore, ported to SBCL by Martin Atzmueller.
6234 * Martin Atzmueller fixed several filesystem-related problems,
6235 including bug #36, in part by porting CMU CL patches, which were
6236 written in part by Paul Werkowski.
6237 * More compiler warnings in src/runtime/ are gone, thanks to
6238 more patches from Martin Atzmueller.
6239 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6242 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6244 * DESCRIBE now works on CONDITION objects.
6245 * The debugger now handles errors which arise when trying to print
6246 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6248 * The build system now uses an additional file, customize-target-features.lisp,
6249 to allow local modifications to the target *FEATURES* list. (The point of
6250 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6251 debugging features enabled, without having to worry about propagating it
6252 into everyone's system when I do a "cvs update".) When no
6253 customize-target-features.lisp file exists, the target *FEATURES* list
6254 should be constructed the same way as before.
6255 * fixed bugs in DEFCONSTANT ANSI-compatibility:
6256 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
6257 warn about behavior which is undefined under the ANSI spec. Note: This
6258 is specified by ANSI, but it's not very popular with programmers.
6259 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
6260 macro in the SBCL sources for an example of a workaround which you
6261 might use to make portable ANSI-standard code which does what you want.
6262 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
6263 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
6264 when it's used as a non-toplevel form. (This is required in order
6265 to implement the DEFCONSTANT-EQX macro.)
6266 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6267 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6268 funny things, due to bugs in the implementation of EVAL-WHEN
6269 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6270 non-toplevel DEFCONSTANTs are uncommon.)
6271 * The core file version number and fasl file version number have been
6272 incremented, because the old noncompliant DEFCONSTANT behavior involved
6273 calling functions which no longer exist, and because I also took the
6274 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6275 * fixed bug 1 (error handling before read-eval-print loop starts), and
6276 redid debugger restarts and related debugger commands somewhat while
6278 ** The QUIT debugger command is gone, since it did something
6279 rather different than the SB-EXT:QUIT command, and since it never
6280 worked properly outside the main toplevel read/eval/print loop.
6281 Invoking the new TOPLEVEL restart provides the same functionality.
6282 ** The GO debugger command is also gone, since you can just invoke
6283 the CONTINUE restart directly instead.
6284 ** The TOP debugger command is also gone, since it's redundant with the
6285 FRAME 0 command, and since it interfered with abbreviations for the
6287 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6289 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6290 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6291 some porting work by Martin Atzmueller)
6292 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6293 with a boatload of patches which he ported to SBCL. Now that those
6295 ** The system tries to make sure that its low-priority messages
6296 are prefixed by semicolons, to help people who like to use
6297 syntax highlighting in their ILISP buffer. (This patch
6298 was originally due to Raymond Toy.)
6299 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6300 patches originally written by Raymond Toy.
6301 ** The compiler understands coercion between single-value and
6302 multiple-VALUES type expressions better, getting rid of some very
6303 weird behavior, thanks to patches originally by Robert MacLachlan
6304 and Douglas Crosher.
6305 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6306 lambda lists, thanks to a patch originally by Pierre Mai.
6307 ** The system no longer bogusly warns about "abbreviated type
6309 ** The compiler gets less confused by inlining and RETURN-FROM,
6310 thanks to some patches originally by Tim Moore.
6311 ** The system no longer hangs when dumping circular lists to fasl
6312 files, thanks to a patch originally from Douglas Crosher.
6313 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6314 undefined function error.
6315 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6316 in structure slot initforms) for now, documented workaround instead:-|
6317 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6318 * fixed bug 5: added stubs for various Gray stream functions called
6319 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6320 installed, at least appropriate type errors are generated
6321 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6322 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6323 consistently in DEFMETHOD forms.
6324 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6325 it doesn't seem to affect SBCL after all
6326 * The C runtime system now builds with better optimization and many
6327 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6329 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6331 * The system is now under CVS at SourceForge (instead of the
6332 CVS repository on my home machine).
6333 * The new signal handling code has been tweaked to treat register
6334 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6335 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6336 downstream, e.g. in debug-int.lisp, has implicit dependencies
6337 on the unsignedness of integer representation of machine words,
6338 and that caused the system to bomb out with infinite regress
6339 when trying to recover from type errors involving signed values,
6340 e.g. (BUTLAST '(1 2 3) -1).)
6341 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6342 (This was one of the bugs Peter Van Eynde reported back in July.)
6343 * The system now uses code inspired by Colin Walters' O(N)
6344 implementation of MAP (from the cmucl-imp@cons.org mailing
6345 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6346 inline the MAP operation, and there is more than one
6347 sequence argument to the MAP call (so that it can't just
6348 do ETYPECASE once and for all based on the type of the
6349 single sequence argument). (The old non-inline implementation
6350 of the general M-argument sequence-of-length-N case required
6351 O(M*N*N) time when any of the sequence arguments were LISTs.)
6352 * The QUIT :UNIX-CODE keyword argument has been renamed to
6353 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6354 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6356 * Raymond Wiker's patches to port dynamic loading from Linux to
6357 FreeBSD have been added.
6358 * The BUGS file is now more nearly up to date, thanks in large part
6359 to Martin Atzmueller's review of it.
6360 * The debugger now flushes standard output streams before it begins
6361 its output ("debugger invoked" and so forth).
6362 * The core version number and fasl file version number have both
6363 been incremented, because of incompatible changes in the layout
6365 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6366 used to not be called for a saved Lisp image.)
6367 * Martin Atzmueller's version of a patch to fix a compiler crash,
6368 as posted on sbcl-devel 13 September 2000, has been installed.
6369 * Instead of installing Martin Atzmueller's patch for the
6370 compiler transform for SUBSEQ, I deleted the compiler transform,
6371 and transforms for some similar consing operations.
6372 * A bug in signal handling which kept TRACE from working on OpenBSD
6374 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6375 away by constant folding
6376 * The system now defines its address space constants in one place
6377 (in the Lisp sources), and propagates them automatically elsewhere
6378 (through GENESIS and the sbcl.h file). Therefore, patching the
6379 address map is less unnecessarily tedious and error-prone. The
6380 Lisp names of address space constants have also been systematized.
6381 * CVS tags like dollar-Header-dollar have been removed from
6382 the sources, because they have never saved me trouble and
6383 they've been source of trouble working with patches and other
6384 diff-related operations.
6385 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6386 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6388 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6390 * The system has been ported to OpenBSD.
6391 * The system now compiles with a simple "sh make.sh" on the systems
6392 that it's supported on. I.e., now you no longer need to tweak
6393 text in the target-features.lisp-expr and symlinks in src/runtime/
6394 by hand, the make.sh takes care of it for you.
6395 * The system is no longer so grossly inefficient when compiling code
6396 involving vectors implemented as general (not simple) vectors (VECTOR T),
6397 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6398 which dares to use the various sequence functions on non-simple
6399 vectors, takes less of a performance hit.
6400 * There is now a primitive type predicate VECTOR-T-P
6401 to test for the (VECTOR T) type, so that e.g.
6402 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6403 can now be compiled with some semblance of efficiency. (The old code
6404 turned the type declaration into a full call to %TYPEP at runtime!)
6405 * AREF on (VECTOR T) is still not fast, since it's still compiled
6406 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6407 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6408 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6409 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6410 without making full calls to SUBTYPEP at runtime.
6411 (Some analogous efficiency issues for non-simple vectors specialized to
6412 element types other than T, or for non-simple multidimensional arrays,
6413 have not been addressed. They could almost certainly be handled the
6414 same way if anyone is motivated to do so.)
6415 * The changes in array handling break binary compatibility, so
6416 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6417 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6418 instead of (VALUES T T).
6419 * By following the instructions that Dan Barlow posted to sbcl-devel
6420 on 2 July 2000, I was able to enable primitive dynamic object
6421 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6422 functionality is not implemented (since it calls ld to resolve
6423 library references automatically, requiring RUN-PROGRAM for its
6424 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6425 try to resolve library references) is now supported.
6426 * The system now flushes the standard output streams when it terminates,
6427 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6428 them at several other probably-convenient times, e.g. in each pass of
6429 the toplevel read-eval-print loop, and after evaluating a form given
6430 as an "--eval" command-line option. (These changes were motivated by a
6431 discussion of stream flushing issues on cmucl-imp in August 2000.)
6432 * The source transform for TYPEP of array types no longer assumes
6433 that an array whose element type is a not-yet-defined type
6434 is implemented as an array of T, but instead punts, so that the
6435 type will be interpreted at runtime.
6436 * There is now some support for cross-compiling in make.sh: each of
6437 the phases of make.sh has its own script. (This should be transparent
6438 to people doing ordinary, non-cross-compile builds.)
6439 * Since my laptop doesn't have hundreds of megabytes of memory like
6440 my desktop machine, I became more motivated to do some items on
6441 my to-do list in order to reduce the size of the system a little:
6442 ** Arrange for various needed-only-at-cold-init things to be
6443 uninterned after cold init. To support this, those things have
6444 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6445 symbols with such names are now uninterned after cold init).
6446 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6447 fasl files for cold load.
6448 ** Remove the old compiler structure pooling code (which used to
6449 be conditional on the target feature :SB-ALLOC) completely.
6450 ** Redo the representation of some data in cold init to be more compact.
6451 (I also looked into supporting byte compiled code at bootstrap time,
6452 which would probably reduce the size of the system a lot, but that
6453 looked too complicated, so I punted for now.)
6454 * The maximum signal nesting depth in the src/runtime/ support code has
6455 been reduced from 4096 to 256. (I don't know any reason for the very
6456 large old value. If the new smaller value turns out to break something,
6457 I'll probably just bump it back up.)
6458 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6460 * Many, many bugs reported by Peter Van Eynde have been added to
6461 the BUGS list; some have even been fixed.
6462 * While enabling dynamic object file loading, I tried to make the
6463 code easier to understand, renaming various functions and variables
6464 with less ambiguous names, and changing some function calling
6465 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6466 * While trying to figure out how to do the OpenBSD port, I tried to
6467 clean up some of the code in src/runtime/. In particular, I dropped
6468 support for non-POSIX signal handling, added various comments,
6469 tweaked the code to reduce the number of compilation warnings, and
6470 renamed some files to increase consistency.
6471 * To support the new automatic configuration functionality in make.sh,
6472 the source file target-features.lisp-expr has been replaced with the
6473 source file base-target-features.lisp-expr and the machine-generated
6474 file local-target-features.lisp-expr.
6475 * fixed a stupid quoting error in make.sh so that using CMU CL
6476 "lisp -batch" as cross-compilation host works again
6478 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6480 * DESCRIBE no longer tries to call itself recursively to describe
6481 bound/fbound values, so that it no longer fails on symbols which are
6482 bound to themselves (like keywords, T, and NIL).
6483 * DESCRIBE now works on generic functions.
6484 * The printer now prints less-screwed-up representations of closures
6485 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6486 * A private symbol is used instead of the :EMPTY keyword previously
6487 used to mark empty slots in hash tables. Thus
6488 (DEFVAR *HT* (MAKE-HASH-TABLE))
6489 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6490 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6491 now does what ANSI says that it should. (You can still get
6492 similar noncompliant behavior if bang on the hash table
6493 implementation with all the symbols you get back from
6494 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6495 This breaks binary compatibility, since tests for equality to
6496 :EMPTY are wired into things like the macroexpansion of
6497 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6499 * There's now a minimal placeholder implementation for CL:STEP,
6500 as required by ANSI.
6501 * An obscure bug in the interaction of the normal compiler, the byte
6502 compiler, inlining, and structure predicates has been patched
6503 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6504 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6506 * Missing ordinary arguments in a macro call are now detected even
6507 when the macro lambda list contains &KEY or &REST.
6508 * The debugger no longer complains about encountering the top of the
6509 stack when you type "FRAME 0" to explicitly instruct it to go to
6510 the top of the stack. And it now prints the frame you request even
6511 if it's the current frame (instead of saying "You are here.").
6512 * As specified by ANSI, the system now always prints keywords
6513 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6515 * The default initial SIZE of HASH-TABLEs is now smaller.
6516 * Type information from CLOS class dispatch is now propagated
6517 into DEFMETHOD bodies, so that e.g.
6518 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6520 is now basically equivalent to
6521 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6522 (DECLARE (TYPE SINGLE-FLOAT X))
6524 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6525 operation, without having to do run-time type dispatch.
6526 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6527 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6528 * Since I don't seem to be making big file reorganizations very often
6529 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6530 is overflowing my ability to conveniently back them up), I've finally
6531 checked the system into CVS. (The CVS repository is on my home system,
6532 not at SourceForge -- putting it on SourceForge might come later.)
6533 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6534 high-level GC-NOTIFY-FOO functions send their output. (There's
6535 still very little control of where low-level verbose GC functions
6536 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6537 less than it used to -- the GC-NOTIFY-FOO functions are now under
6538 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6539 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6540 in only one place in the source code, and propagates it automatically
6541 everywhere that it's needed. Thus e.g. when I bump the version from
6542 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6543 * The C source files now include boilerplate legalese and documentation
6544 at the head of each file (just as the Lisp source files already did).
6545 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6546 to his page will be replaced with a link to his new CLiki service.
6548 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6550 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6551 * The build process now looks for GNU make under the default name "gmake",
6552 instead of "make" as it used to. If GNU make is not available as "gmake"
6553 on your system, you can change this default behavior by setting the
6554 GNUMAKE environment variable.
6555 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6556 can build without error under CMU CL.
6558 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6560 * There is now a partial SBCL user manual (with some new text and some
6561 text cribbed from the CMU CL manual).
6562 * The beginnings of a profiler have been added (starting with the
6563 CMU CL profiler and simplifying and cleaning up). Eventually the
6564 main interface should be through the TRACE macro, but for now,
6565 it's still accessed through vaguely CMU-CL-style functions and macros
6566 exported from the package SB-PROFILE.
6567 * Some problems left over from porting CMU CL to the new
6568 cross-compilation bootstrap process have been cleaned up:
6569 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6570 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6571 part when getting rid of the compiler *BACKEND* stuff.)
6572 ** The value of *NULL-TYPE* was screwed up, because it was
6573 being initialized before the type system knew the final
6574 definition of the 'NULL type. This screwed up several key
6575 optimizations in the compiler, causing inefficiency in all sorts
6576 of places. (I found it because I wanted to understand why
6577 GET-INTERNAL-RUN-TIME was consing.)
6578 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6579 PROCLAIM FTYPE information. Unfortunately this broke binary
6580 compatibility again, since now the forms output by DEFGENERIC
6581 to refer to functions which didn't exist in 0.6.3.
6582 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6583 can use the new (as of 0.6.3) transform for SOME into MAP into
6585 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6586 values to (INTEGER 0 1000000), so that the time code will no longer
6587 occasionally get blown up by Linux returning 1000000 microseconds
6588 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6589 its output conform to the ANSI spec. (Alas, this makes its output
6590 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6591 * A full call to MAP NIL with a single sequence argument no longer conses.
6592 * fixes to problems pointed out by Martin Atzmueller:
6593 * The manual page no longer talks about multiprocessing as though
6594 it were currently supported.
6595 * The ILISP support patches have been removed from the distribution,
6596 because as of version 5.10.1, ILISP now supports SBCL without us
6597 having to maintain patches.
6598 * added a modified version of Raymond Toy's recent CMU CL patch for
6599 EQUALP comparison of HASH-TABLE
6601 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6603 * The system still can't cross-compile itself with
6604 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6605 entails), but at least it can compile more of itself that way
6606 than it used to be able to, and various buglets which were uncovered
6607 by trying to cross-compile itself that way have now been fixed.
6608 * This release breaks binary compatibility again. This time
6609 at least I've incremented the FASL file format version to 2, so that the
6610 problem can be detected reliably instead of just causing weird errors.
6611 * various new style warnings:
6612 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6613 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6614 ** using the lexical binding of a variable named in the *FOO* style
6615 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6616 as specified by ANSI.
6617 * *RANDOM-STATE* is no longer automatically initialized from
6618 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6619 default behavior of the system is to repeat its behavior every time
6620 it's run. If you'd like to change this behavior, you can always
6621 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6622 old convention there was no comparably easy way to get the system to
6623 repeat its behavior every time it was run.
6624 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6625 FTYPE declarations has been removed, in favor of their ANSI
6626 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6627 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6628 the types of their sequence arguments can be determined at compile time.
6629 This is done through a new open code expansion for MAP which eliminates
6630 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6631 argument types can be determined at compile time.
6632 * The optimizer now transforms COERCE into an identity operation when it
6633 can prove that the coerced object is already of the correct type. (This
6634 can be a win for machine generated code, including the output of other
6635 optimization transforms, such as the MAP transform above.)
6636 * Credit information has been moved from source file headers into CREDITS.
6637 * Source file headers have been made more standard.
6638 * The CASE macro now compiles without complaining even when it has
6641 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6643 * (Note that the way that the PCL macroexpansions were rewritten
6644 to accommodate the change in DEFGENERIC below breaks binary
6645 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6646 not run under sbcl-0.6.2. Once we get out of alpha releases,
6647 i.e. hit release 1.0.0, we'll probably try to maintain binary
6648 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6649 and sbcl-1.4.4. Until then, however, it might be fairly common
6650 for maintenance releases to break binary compatibility.)
6651 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6653 * The reporting of unhandled signals has been changed to print some
6654 explanatory text as well as the report form. (Previously only
6655 the report form was printed.)
6656 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6657 it defines, so that the compiler no longer issues undefined function
6658 warnings for compiled-but-not-yet-loaded generic functions.
6659 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6660 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6661 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6662 section of the ANSI spec are supported.
6663 * The "" nickname for the "KEYWORD" package has been removed.
6664 The reader still handles symbol tokens which begin with a package marker
6665 as keywords, but it doesn't expose its mechanism for doing so in the
6666 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6667 * The system now issues STYLE-WARNINGs for contradictory TYPE
6668 proclamations. (Warnings for contradictory FTYPE proclamations would
6669 be nice too, but those can't be done usefully unless the type system
6670 is made smarter about FUNCTION types.)
6671 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6672 systematized, so that "*target-*.lisp is supposed to exist only on the
6673 target and imply that there's a related file which exists on the
6674 host, and *host-*.lisp is supposed to exist only on the host and imply
6675 that there's a related file which exists on the target. This involves a
6676 lot of renaming. Hopefully the acute confusion caused by the renaming
6677 will be justified by the reduction in chronic confusion..
6678 ** runtime-type.lisp -> early-target-type.lisp
6679 ** target-type.lisp -> late-target-type.lisp
6680 ** early-host-format.lisp -> early-format.lisp
6681 ** late-host-format.lisp -> late-format.lisp
6682 ** host-error.lisp -> misc-error.lisp
6683 ** early-error.lisp -> early-target-error.lisp
6684 ** late-error.lisp -> late-target-error.lisp
6685 ** host-defboot.lisp -> early-defboot.lisp
6686 ** code/misc.lisp -> code/target-misc.lisp
6687 ** code/host-misc.lisp -> code/misc.lisp
6688 ** code/numbers.lisp -> code/target-numbers.lisp
6689 ** code/early-numbers.lisp -> numbers.lisp
6690 ** early-host-type.lisp -> early-type.lisp
6691 ** late-host-type.lisp -> late-type.lisp
6692 ** host-typep.lisp -> typep.lisp
6693 ** load.lisp -> target-load.lisp
6694 ** host-load.lisp -> load.lisp
6695 ** host-disassem.lisp -> disassem.lisp
6696 ** host-insts.lisp -> insts.lisp
6697 ** byte-comp.lisp -> target-byte-comp.lisp
6698 ** host-byte-comp.lisp -> byte-comp.lisp
6699 ** host-signal.lisp -> signal.lisp
6700 ** host-defstruct.lisp -> defstruct.lisp
6701 ** late-target-type.lisp -> deftypes-for-target.lisp
6702 Furthermore, several other previously target-only files foo.lisp (e.g.
6703 hash-table.lisp and random.lisp) have been split into a target-and-host
6704 foo.lisp file and a target-only target-foo.lisp file, with their key type
6705 definitions in the target-and-host part, so that the cross-compiler will
6706 know more about target types.
6707 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6708 gone away. In their place are various *BACKEND-FOO* variables
6709 corresponding to the slots of the old structure.
6710 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6711 into the target SBCL has been fixed.
6712 * The chill.lisp system for loading cold code into a running SBCL
6714 * Support for the CMU CL "scavenger hook" extension has been removed.
6715 (It was undocumented and unused in the CMU CL sources that SBCL was
6716 derived from, and stale in sbcl-0.6.1.)
6717 * Various errors in the cross-compiler type system were detected
6718 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6719 (enabling various consistency checks). Many of them were fixed,
6720 but some hard problems remain, so the compiler is back to
6721 running without *TYPE-SYSTEM-INITIALIZED* for now.
6722 * As part of the cross-compiler type system cleanup, I implemented
6723 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6724 * I have started adding UNCROSS calls throughout the type system
6725 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6726 on cross-compiler input files will be able to go away, and various
6728 * CONSTANTP now returns true for quoted forms (as explicitly required
6731 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6733 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6734 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6735 (MAKE-LIST -1). In the longer term, it ought to become true
6736 that declarations are assertions even at SAFETY 1. For now, it's not
6737 quite true even at SAFETY 3, but it's at least more nearly true..
6738 (Note that this change seems to increases the size of the system by
6739 O(5%) and to decrease the speed of the compiler by 20% or more.)
6740 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6741 for the problem of printing dozens of lines of distracting information
6742 about low-level system machinery as part of the top stack frame
6743 on entry to the debugger when an undefined function was called.
6744 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6745 is not reset to COMMON-LISP-USER.
6746 * Compilation of stuff related to dyncount.lisp has been made conditional
6747 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6748 smaller. The various dyncount-related symbols have been moved into
6749 a new "SB-DYNCOUNT" package.
6750 * tty-inspect.lisp has been renamed to inspect.lisp.
6751 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6752 feature has gone away. (When we eventually port to other flavors of
6753 libc and/or Unix, we'll try to make the differences between flavors
6754 invisible at the user level.)
6755 * Various other *FEATURES* tags, and/or their associated conditionals,
6756 have been removed if obsolescent, or given better documentation, or
6757 sometimes given more-mnemonic names.
6759 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6761 * tidied up "make.sh" script
6762 * tidied up system directory structure
6763 * better "clean.sh" behavior
6764 * added doc/FOR-CMUCL-DEVELOPERS
6765 * many many small tweaks to output format, e.g. removing possibly-confusing
6766 trailing #\. character in DESCRIBE-INSTANCE
6767 * (EQUALP #\A 'A) no longer signals an error.
6768 * new hashing code, including EQUALP hashing
6769 * tidied up Lisp initialization and toplevel
6770 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6771 * command line argument processing
6772 * added POSIX-GETENV function to deal with Unix-ish environment variables
6773 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6774 terminating SBCL on EOF
6775 * non-verbose GC by default
6776 * There is no more "sbcl" shell script; the sbcl file is now the C
6777 runtime executable (just like CMU CL).
6778 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6780 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6781 symbol and package information as Lisp native symbol and package objects
6782 instead of strings naming symbols and strings naming packages. This way,
6783 whenever packages are renamed (as in warm init), debug information is
6784 transformed along with everything else.
6785 * tweaked the optimization policy declarations which control the building
6786 of SBCL itself. Now, among other things, the system no longer saves
6787 source location debugging information. (This helps two problems at once
6788 by reducing SBCL size and by keeping SBCL from trying to look for its
6789 sources -- which may not exist -- when reporting errors.)
6790 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6791 debugging and testing purposes
6792 * cleaned up printing, making the printer call PRINT-OBJECT for
6793 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6794 methods, giving nearly-ANSI behavior
6795 * converted almost all special variables to use *FOO* naming convention
6796 * deleted PARSE-TIME functionality, since it can be done portably
6797 * moved some files out of cold init into warm init
6798 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6800 * regularized formatting of source files
6801 * added an install.sh script
6802 * fixed ridiculous memory usage of cross-compiler by making
6803 compiler/alloc.lisp not try to do pooling unless it can hook
6804 itself into the GC of the cross-compilation host. Now the system
6805 builds nicely on my old laptop.
6806 * added :SB-ALLOC in target-features.lisp-expr
6807 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6808 was not implemented)
6809 * re-did condition handling and note reporting in the compiler. Notes
6810 are no longer handled by signalling conditions. Style warnings
6811 and warnings are handled more correctly and reported in such a way
6812 that it's easy to find one or the other in your output (so that you
6813 can e.g. figure out which of many problems caused COMPILE-FILE to
6815 * changed the severity of several compiler warnings from full WARNING
6816 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6817 compiler note reporting so that it doesn't use the condition system
6818 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6819 COMPILE-FILE command)
6820 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6821 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6822 no longer supported, since their implementation was deeply intertwingled
6823 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6824 * removed bogus "support" for compiler macros named (SETF FOO), and
6825 removed the compiler macro for SETF INFO (but only after making a fool
6826 of myself on the cmucl-imp mailing list by posting a bogus patch for
6827 DEFINE-COMPILER-MACRO..)
6828 * Compiled files containing forms which have side effects on the Lisp
6829 reader (such as DEFPACKAGE forms) are now handled more correctly.
6830 (Compiler queuing of top level lambdas has been suppressed by setting
6831 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6832 * deleted various currently-unused source files, e.g. gengc.lisp. They
6833 may be added back at some point e.g. when porting to other architectures,
6834 but until they are it's distracting to distribute them and to try to
6836 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6837 there were so many of them they're just distractions, and UNCROSS is
6838 known to be able to handle the current sources
6839 * moved PROFILE functionality into TRACE, so that it will be clear
6840 how the wrapping and unwrapping of functions when you profile them
6841 interacts with the wrapping and unwrapping of functions when you
6842 trace them. (Actually, the functionality isn't there yet, but at least
6843 the interface specification is there. Hopefully, the functionality will
6844 arrive with some future maintenance release.)
6845 * removed host-oops.lisp
6846 * changed signature of QUIT function to allow UNIX-CODE argument
6847 * fixed READ-SEQUENCE bug
6848 * tweaked verbose GC output so that it looks more like the progress
6849 output that ANSI specifies for functions like LOAD
6850 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6851 * added <http://sbcl.sourceforge.com> to the banner information printed by
projects / sbcl.git / blob