1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.1.4:
3 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
5 * new feature: package local nicknames. See manual for details.
6 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
7 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
8 * enhancement: easier to use restarts for resolving name-conflicts
9 resulting from IMPORT, EXPORT, or USE-PACKAGE.
10 * enhancement: variant DEFPACKAGE forms now signal a full error with
11 restarts provided for resolving the situation. (lp#891351)
12 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
13 DEFPACKAGE forms can now signal a full error with restarts provided for
14 resolving the situation. See manual for details. (lp#891351)
15 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
16 (Thanks to Anton Kovalenko.) (lp#1102748)
17 * enhancement: backtrace improvements
18 ** secondary CLOS dispatch functions have better debug names (lp#503081)
19 ** easier to read method names in backtraces. See
20 SB-DEBUG:*METHOD-FRAME-STYLE*.
21 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
22 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
23 SB-DEBUG:BACKTRACE-AS-LIST.
24 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
25 information is available in less intrusive form as frame annotations.
26 * bug fix: deleting a package removes it from implementation-package
27 lists of other packages.
28 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
29 This does not fix the occasional "interrupt already pending" issue, though.
31 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
32 * optimization: LOOP expressions using "of-type character" have slightly
33 more efficient expansions.
34 * bug fix: very long (or infinite) constant lists in DOLIST do not result
35 in very long compile times or heap exhaustion anymore. (lp#1095488)
36 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
37 * bug fix: adjust-array ignored :initial-element for simple-vectors.
39 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
40 longer cause infinite loops (on circular data) or violate eqlity
41 constraints. (lp#1099708)
42 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
44 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
45 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
47 * enhancement: support for C-c to interrupt the foreground thread
48 on Windows. (Thanks to Anton Kovalenko.)
49 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
50 * enhancement: Safepoint builds on POSIX platforms can now optionally be
51 built without pseudo-atomic sequences and their run-time overhead.
52 * enhancement: Threads created outside of Lisp can enter Lisp through
53 alien callbacks and appear as Lisp threads for the duration of that
54 function invocation. On safepoint builds only.
55 * enhancement: Miscellaneous improvements to namestrings and underlying
56 calls to OS functions for file system access on Windows. (Thanks to
58 * enhancement: The MSI installer support for Windows now uses Windows
59 Installer XML at least version 3.5 and includes various usability
60 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
61 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
62 on Windows. (Thanks to Anton Kovalenko.)
63 * enhancement: The Windows backend now supports the x86-64 platform.
64 (Thanks to Anton Kovalenko.)
65 * bug fix: fasls are now once again directly executable (on platforms
66 supporting shebang lines, with a suitably-installed sbcl).
67 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
68 * bug fix: Fix CAS access to slots of direct instances of structure classes
69 in the presence of subclasses sharing the same conc-name.
70 * bug fix: Logical pathname namestrings on Windows have been changed to
71 be lower-case, to minimize differences between POSIX and Windows.
73 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
74 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
75 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
76 (NT 5.0) is no longer being maintained.
77 * notice: Starting with this version, SBCL on Windows no longer supports
78 building with disabled thread support.
79 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
80 * enhancement: New feature sb-dynamic-core allows the runtime to be
81 rebuilt or relocated without requiring changes to the core file on
82 all linkage table platforms. Required on Windows. (Thanks to Anton
84 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
85 * enhancement: I/O on Windows unnamed pipes is interruptible
86 asynchronously using interrupt-thread, timers when running on Windows NT
87 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
89 * enhancement: Support for the experimental safepoint-based stop-the-world
90 protocol on the PowerPC platform.
91 * bug fix: Non-blocking reads from the Windows console were not necessarily
92 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
93 * bug fix: stability of threads on Windows has been improved upon through
94 an updated stop-the-world protocol (thanks to Anton Kovalenko).
96 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
97 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
98 (COMPILE and COMPILE-FILE still do.)
99 * optimization: the SPARC backend now supports the precise generational
100 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
101 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
102 * enhancement: add experimental support for the SB-THREAD feature and the
103 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
104 Threads are enabled by default, and this version of SBCL is considered
105 to be the last and final release to officially support building with
107 * optimization: The compiler no longer rotates loops in some cases where
108 this transformation actually lead to worse code being generated.
109 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
110 symbol-macros by lexical bindings.
111 * bug fix: stack allocation was prevented by high DEBUG declaration in
113 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
114 (thanks to SANO Masatoshi)
115 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
116 :JUNK-ALLOWED was true.
117 * bug fix: type derivation inferred overly conservative types for
118 unions of array types. (lp#1050768)
120 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
121 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
122 source annotation of DISASSEMBLE output. Defaults to T.
123 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
124 WAIT-P argument added to WITH-RECURSIVE-LOCK.
125 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
127 * enhancement: Optional features (not enabled by default) allow the
128 use of signals for inter-thread synchronization to be reduced on certain
129 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
130 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
131 to test these experimental features. Known remaining bugs include minor
132 thread safety issues, less timely freeing of memory by GC, and certain
133 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
134 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
135 comparisons, particularly on almost-sorted inputs.
136 * bug fix: Reading floats with large exponents no longer takes too much time
137 before reporting that the exponent is too large.
138 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
139 correctly when the received datagram is larger than the provided buffer.
140 (lp#1023438, thanks to Robert Uhl)
141 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
142 a SYMBOL-VALUE form with a constant symbol argument.
143 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
144 into a DEFCAS defined place was used as the place.
145 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
146 for from bit-vectors.
147 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
148 lead to internal errors or crashes (lp#1058799).
149 * documentation: a section on random number generation has been added to the
152 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
153 * enhancement: implicit generic function warnings now specify the package
154 in which the new generic function is being created.
155 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
156 updates of CAS-able places (similar to Clojure's swap!).
157 * enhancement: run-program no longer decodes and re-encodes environment when
158 :environment argument is not provided. (lp#985904)
159 * enhancement: errors during compiler-macro expansion no longer cause
160 runtime errors, only a compile-time warning, otherwise behaving as if
161 the compiler macro had declined to expand.
162 * optimization: On x86-64, code alignment of block headers is done with
163 multi-byte NOPs now instead of repetitions of the single-byte NOP.
164 * optimization: MAP-INTO is substantially faster when the target sequence is
165 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
166 thanks to James M. Lawrence)
167 * optimization: the compiler no longer heap-conses to check exits in cases
168 where the exit function is dynamic extent, or when it can prove the exit
169 function cannot escape. (lp#1002534)
170 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
171 element type, and vectors that aren't SIMPLE-ARRAYs.
172 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
173 speed (around 1/3 the time in some cases), and a little better in terms of
174 comparison calls. (Thanks to Takeru Ohta)
175 * bug fix: On SPARC, a limitation on the number of code constants emittable
176 by the compiler has been lifted, allowing certain long functions to
177 compiled and assembled which had previously been unsupported; fixes
178 cl-bench on this ISA (lp#1008996).
179 * bug fix: potential for infinite recursion during compilation of CLOS slot
180 typechecks when dependency graph had loops. (lp#1001799)
181 * bug fix: error forms reported with some program-errors were not escaped
183 * bug fix: functions from EVAL are now on more equal footing with functions
184 from COMPILE. (lp#1000783, lp#851170, lp#922408)
185 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
186 objects as its :METHOD-COMBINATION argument, not just lists designating
187 method combinations. (lp#936513)
188 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
190 * bug fix: restore build on solaris/sparc. (lp#1008506)
191 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
192 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
193 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
194 as keyword arguments no longer accidentally match unevaluated symbols
196 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
197 parameter was zero, now it signals an error. (lp#905817, fixed since
199 * bug fix: run-program with :pty t no longer makes the pty as the process's
201 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
204 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
205 * RANDOM enhancements and bug fixes:
206 ** bug fix: the range and distribution of random integers could be
207 catastrophically wrong when the compiler derived the type of its
208 argument as a disjoint set of small integers.
209 ** bug fix: the distribution of random integers is now completely
210 uniform even when the specified limit is not a power of two.
211 (Previously some values could be about 0.1 % more probable than
212 others in the worst case.) (lp#309467)
213 ** RANDOM on large integer arguments is generally faster and conses
214 less than before; this is visible for fixnums above a length of
215 about 24 bits, but extremely so for bignums: the old implementation
216 used time and space quadratical in the size of the argument there,
217 the new one is linear.
218 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
219 main entry point, SB-EXT:QUIT is deprecated.
220 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
221 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
222 * enhancement: FASL loading no longer grabs the world-lock.
223 * enhancement: GENCGC reclaims space more aggressively when objects being
224 allocated are a large fraction of the total available heap space.
226 * enhancement: backtraces show the correct number of arguments for frames
227 called with too many arguments.
228 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
230 * enhancement: ASDF has been updated 2.21.
231 * optimization: fewer uses of full calls to signed modular functions.
233 * optimization: typechecking alien values is typically 5 x faster.
234 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
236 * bug fix: file compilation performance issues when dumping subtypes
237 of CHARACTER (lp#994487)
238 * bug fix: fixed disassembly of some SSE instructions on x86-64.
239 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
240 OPEN. (lp#969352, thanks to Kambiz Darabi)
241 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
243 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
244 classoid even if X was not the proper name of the class. (lp#941102)
245 * bug fix: declaration leakage between lexical environments due to careless
246 use of NCONC in MAKE-LEXENV. (lp#924276)
247 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
248 *default-pathname-defaults* contains NAME or TYPE components.
249 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
250 from CL package, e.g. (loop . 10).
251 * bug fix: run-program with existent or non-existent files for :output or
252 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
253 returns NIL instead of signalling an obscure error.
254 * bug fix: fix miscompilation of some logand forms with large constant
255 arguments. (lp#974406)
256 * bug fix: account for funcallable-instance objects properly in ROOM.
257 * bug fix: incorrect octets reported for c-string decoding errors.
259 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
261 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
262 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
263 allowing faster release of memory back to the OS. (lp#991293)
264 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
265 existing deadline for the dynamic scope of its body.
266 * bug fix: compiler-internal interval arithmetic needed to be more
267 conservative about open intervals when operated on by monotonic but not
268 strictly-monotonic functions. (lp#975528)
269 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
270 it's also slightly faster. (lp#998926)
271 * bug fix: better error messages for malformed declarations.
273 * bug fix: define-condition didn't return the name of the defined condition.
275 ** improved docstrings: REPLACE (lp#965592)
277 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
278 * bug fix: fix copy-structure. When copying from stack to heap, garbage
279 could end up in the heap making GC unhappy.
280 (Thanks to James Knight, lp#911027)
282 ** SBCL can now be built using Clang.
283 ** ASDF has been updated 2.20.
284 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
285 * bug fix: don't complain about a too-hairy lexical environment for inlining
286 when the function has never been requested for inlining. (lp#963530)
288 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
289 * enhancements to building SBCL using make.sh:
290 ** --fancy can be specified to enable all supported feature enhancements.
291 ** --with-<feature> and --without-<feature> can be used to specify
292 which features to build with.
293 ** --arch option can be used to specify the architecture to build for.
294 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
295 full-blows cross-compilation.)
296 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
297 which allows specifying name of the default interning package for the
299 * enhancement: when *READ-EVAL* is true, arrays with element type other than
300 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
301 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
302 null alien when malloc() fails. (lp#891268)
303 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
304 conditions can be conveniently accessed through function with the same
305 name, analogously to CONTINUE.
306 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
307 from the printer by type, causing an error marker to be printed instead.
308 (Thanks to Attila Lendvai)
309 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
310 generally behave better when errors occur during printing.
311 * enhancement: the test runner now takes a --report-skipped-tests argument
312 to report the individual tests skipped as well as the number of skipped
314 * enhancement: undefined functions now appear in backtraces as ("undefined
315 function") instead of ("bogus stack frame") on x86oids.
316 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
317 deadlock errors are reported in an easier-to-decipher manner.
318 * enhancement: DESCRIBE on type designators reports the expansion in more
320 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
321 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
322 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
323 * enhancement: better disassembly of segment-prefixes on x86 and other
324 instruction prefixes (e.g. LOCK) on x86 and x86-64.
325 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
326 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
327 * optimization: SUBSEQ on vectors of unknown element type is substantially
329 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
330 be stack-allocated. (lp#902351)
331 * optimization: the compiler is smarter about representation selection for
332 floating point constants used in full calls.
333 * optimization: the compiler no longer refuses to coerce large fixnums to
334 single floats inline, except on x86 where this limitation is still
336 * optimization: truncation operations on integers with constant divisor
337 arguments 1 and -1 are optimized away.
338 * bug fix: deadlock detection could report the same deadlock twice, for
339 two different threads. Now a single deadlock is reported exactly once.
340 * bug fix: interval-arithmetic division during type derivation did not
341 account for signed zeros.
342 * bug fix: compiler error when typechecking a call to a function with
343 non-constant keyword arguments.
344 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
345 * bug fix: condition slot accessors no longer cause undefined function
346 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
347 form that defines them. (lp#896379)
348 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
350 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
351 bogusly report NIL, T.
352 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
353 required arguments ignored and performed assignments to others.
355 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
356 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
357 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
358 * bug fix: redefining a function whose previous definition contained an
359 unknown type no longer causes a style-warning. (lp#806243)
360 * bug fix: undefined functions now appear in backtraces as ("undefined
361 function") instead of ("bogus stack frame") on non-x86oids.
362 * bug fix: backtraces are no longer cut off at ("undefined function") when
363 called under certain circumstances (involving a caller-allocated stack
365 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
366 systems. (regression since 1.0.53)
367 * bug fix: GC deadlocks from dladdr() on certain platforms.
368 * bug fix: broken standard streams no longer automatically cause recursive
369 errors on debugger entry.
370 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
371 (regression since 1.0.53)
372 * bug fix: attempts to stack allocate a required argument to a function with
373 an external entry point caused compiler-errors.
374 * bug fix: compiler notes for failed stack allocation for a function argument
375 no longer claim to be unable to stack allocate the function.
376 * bug fix: COERCE now signals a type-error on several coercions to
377 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
378 * bug fix: missing failure-to-stack-allocate compiler notes for some
379 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
380 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
382 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
384 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
385 * minor incompatible changes:
386 ** RENAME-FILE on a symbolic links used to rename the linked-to file
388 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
389 directory, but now signal an error instead. Use TRUENAME to resolve the
390 pathname if you wish to delete the linked directory, and DELETE-FILE if
391 you wish to delete the
392 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
393 symbols associated with it will trigger a compile-time warning.
394 * thread-related enhancements:
395 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
396 Many thanks to generous donors!)
397 ** Threading is now more reliable on non-Linux platforms. We still don't
398 consider threads on non-Linux platforms good enough to enable them by
399 default, but they're in a clearly better shape now.
400 ** Deadlines supported now on all platforms.
401 ** All blocking functions in the threading API now have a :TIMEOUT
403 ** Semaphore notification objects have been added to SB-THREAD.
404 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
405 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
406 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
407 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
408 using an API anologous to defining new SETFable places.
409 * GC-related enhancements and bug fixes:
410 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
411 and Gb suffixes. Default is megabytes as before.
412 ** on GENCGC targets, the default dynamic space size is now 512Mb for
413 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
414 exception, defaulting to mere 444Mb to fit under default ulimits.) The
415 new defaults are in place to prevent hitting swap on low-end systems.
416 Use build-time option --dynamic-space-size to build an SBCL with
417 another default, or the runtime option to adjust the size at startup: a
418 good size is at most equal to the amount of physical memory the system
420 ** on GENCGC targets, nursery and generation sizes now default to 5% of
422 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
423 refuses to create SIMPLE-FUN objects.
424 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
426 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
427 validation of pointer objects as GENCGC does, instead of a
428 comparatively weak bounds-check against the heap spaces.
429 * SB-BSD-SOCKETS bug fixes:
430 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
431 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
432 systems with getaddrinfo().
433 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
434 safe outside systems with getaddrinfo().
435 * enhancement: ASDF has been updated 2.019.
436 * enhancement: special-case TCO prevention for functions which never return
437 extended to untrusted types, keeping one more frame's worth of debug
438 information around in many cases.
439 * enhancement: debug-names of anonymous and local function are more
440 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
441 * enhancement: on win32, ABS of complex floats guards better against
442 overflows. (lp#888410)
443 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
444 process exiting with code 1. (lp#676987)
445 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
446 the system where on the filesystem the SBCL sources themselves are
447 located. (Thanks to Zach Beane)
448 * enhancement: the compiler is now able to derive tighter bounds for
449 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
450 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
451 correctly, even on wide-fixnum builds. (lp#887220)
452 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
453 resolved to directories.
454 * bug fix: type mismatch when assigning to lexical variables no longer
455 result in fasl-dumping internal type objects. (lp#890750)
456 * bug fix: type mismatch on (SETF AREF) and function return values no
457 longer result in fasl-dumping internal type objects.
458 * bug fix: With several combinations of argument types, for example (EXPT
459 <integer> <(complex double)>), EXPT now uses double-precision throughout
460 instead of partially calculating only to single-precision. (lp#741564;
461 thanks to Lutz Euler)
462 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
463 objects when interrupted by GC on PPC.
465 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
466 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
467 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
468 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
469 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
470 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
471 targets is now 63 bits (up from 61).
472 * enhancement: DESCRIBE now reports a lambda-list and source location
473 for complext setf-expanders.
474 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
475 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
476 of multiple-valued places to be set to NIL, instead of signalling an
477 error (per a careful reading of CLHS 5.1.2.3).
478 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
479 * bug fix: repair crash in x86oid darwin signal handling emulation
480 when built with certain compilers.
481 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
482 rotation arguments on x86-64. (lp#882151)
483 * bug fix: low-level control flow optimisations could result in bogus
484 code in functions with tail and non-tail calls to local functions on
486 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
487 to emit literal characters > (code-char 4095), for comparisons with
489 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
490 on 64 bit platforms. (lp#881445)
491 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
492 delete the wrong file when using relative pathnames. (lp#882877)
493 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
494 sequences and :KEY NIL.
496 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
497 * enhancement: ASDF has been updated to version 2.017.
498 * enhancement: the --core command line option now accepts binaries with
500 * enhancement: when built with :sb-core-compression, core files (regular
501 or executable) can be compressed with zlib. Use the :COMPRESSION
502 argument to SAVE-LISP-AND-DIE to specify a compression level.
503 * enhancement: --[no-]merge-core-pages determines whether the runtime
504 hints the operating system that identical core pages between SBCL
505 processes should share the same physical memory. Default is to only
506 enable this for compressed cores.
507 * optimization: SLEEP no longer conses.
508 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
509 or bit-vectors when using the standard pretty-print dispatch table.
510 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
512 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
513 AREF, CHAR, etc. (lp#826971)
514 * bug fix: compiler-errors causes by integer arguments with composed of
515 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
516 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
517 expressions. (lp#770184)
518 * bug fix: complex single float literals are correctly aligned when used
519 as arguments of arithmetic operators.
520 * bug fix: on 32-bit platforms, rounding of double floats larger than a
521 fixnum is correct. (reported by Peter Keller)
522 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
523 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
525 * bug fix: redefining classes such that slots with custom allocation are
526 added or removed works again.
528 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
529 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
530 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
531 MAKE-SOCKET-STREAM if using SERVE-EVENT.
532 * enhancement: added support for socket keepalive timeout intervals
533 and probe counts on Linux.
534 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
535 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
536 * enhancement: added new toplevel options --quit and --non-interactive
538 * enhancement: the Windows port of SBCL now builds and runs on Wine
539 (thanks to Anton Kovalenko).
540 * enhancement: more, and more correct, SSE instruction definitions on
541 x86-64 (thanks to Alexander Gavrilov).
542 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
543 to help the processor execute spin loops, when applicable. Currently
544 implemented for x86 and x86-64.
545 * optimization: unsigned integer divisions by a constant are implemented
546 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
547 * optimization: improved type-derivation for LOAD-TIME-VALUE.
548 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
549 instructions. (lp#814688)
550 * bug fix: COERCE to unfinalized extended sequence classes now works.
551 (reported by Jan Moringen; lp#815155)
552 * bug fix: a compiler error during typecheck generation, reported by Eric
554 * bug fix: obsolete instance protocol fires when shared slots are added
556 * bug fix: fixed-format floating point printing with scaling factors.
558 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
559 backtraces. (lp#818460)
560 * bug fix: better backtraces for interrupted syscall frames on x86.
562 * bug fix: SSE comparison instructions can be disassembled even when one
563 operand is in memory. (lp#814702)
564 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
565 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
566 type information associated with the VALUES form.
567 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
569 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
570 first write (lp#561642).
571 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
572 * bug fix: bound propagation involving conversion of large bignums to
573 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
575 * bug fix: &REST to &MORE conversion still works in unsafe call to known
576 functions; reported by Lutz Euler (lp#826459).
577 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
580 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
581 * enhancement: errors from FD handlers now provide a restart to remove
582 the offending handler.
583 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
585 * enhancement: location of user or system initialization file can now easily
586 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
587 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
588 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
589 the thunk, as a keyword argument, :arguments.
590 * enhancement: constraint propagation is simplified (and sped up) when
591 COMPILATION-SPEED > SPEED.
592 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
593 * enhancement: debugger understands &MORE arguments better.
594 * optimization: extracting bits of a single-float on x86-64 has been
595 optimized. (lp#555201)
596 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
597 when (> SPEED SPACE).
598 * optimization: local call trampolines (x86 and x86-64) are emitted
600 * optimization: implicit value cells for dynamic-extent closed-over bindings
601 on x86 and x86-64 can hold unboxed values as well.
602 * meta-optimization: improved compilation speed, especially for large
603 functions. (lp#792363 and lp#394206)
604 * bug fix: bound derivation for floating point operations is now more
605 careful about rounding possibly closing open bounds. (lp#793771)
606 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
607 backwards incompatible change in 1.0.48.27)
608 * bug fix: occasional debugger errors in when a type-error occured in a
609 function with dynamic-extent &rest list.
610 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
611 boa-construtors can be used to initialized structure slots.
612 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
613 (lp#795705, regression)
614 * bug fix: DIRECTORY works better on logical pathnames.
615 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
616 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
617 * bug fix: the compiler no longer constant-folds NaNs in
618 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
619 * bug fix: FORMAT now handles floating point rounding correct, eg.
620 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
622 * bug fix: style warning during lambda-list introspection of generic
623 functions with both optional and key argments.
624 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
626 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
629 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
630 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
631 interrupts for its body.
632 * enhancement: source locations are now available for files loaded as
633 source, compile-time-too evaluation, and initialization files.
634 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
635 virtual source-file information, eg. overriding input-file of COMPILE-FILE
636 when a temporary file is used for compilation.
637 * enhancement: ASDF has been updated to version 2.015.3.
638 * enhancement: backtraces involving frames from the default evaluator are
640 * enhancement: RUN-PROGRAM works with user-defined binary input and output
642 * enhancement: more informative compile-time warnings and runtime errors for
643 type-errors detected at compile-time.
644 * enhancement: deadlock detection for mutexes and spinlocks.
645 * enhancement: dynamic-extent for &rest lists stack allocate only their
646 spines, not their argumets. While portable code should not rely on this,
647 particularly in combination with inlining, it should make dynamic-extent
648 easier to use safely.
649 * enhancement: SB-POSIX improvements:
650 ** WNOHANG and WUNTRACED are exported.
651 ** SYSCALL-ERROR now also provides the name of the failing system call.
652 * enhancement: --script improvements:
653 ** errors on standard input, output, and error streams are handled and
654 cause scripts to exit silently, making them easier to use in shell
656 ** backtraces from scripts now go to standard error instead of the
657 terminal even if one is available.
658 ** --script can be an argument, causing the script to be loaded from
660 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
661 strings to foreign memory.
662 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
663 a file, making it easier to understand heap dynamics.
664 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
665 allows the compiler to automatically elide rest-list allocation so long as
666 the call sites are in functions that the compiler knows cannot escape.
668 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
669 especially in safe code when none of the required arguments have changed
671 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
672 uninterruptible, as well as blocking reads from socket streams created
673 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
674 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
675 from the to-char if the from-char is not a dispatch-macro character.
676 * bug fix: references to undefined variables in function calls that are
677 optimized away now signal a runtime error. (lp#722734)
678 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
679 types from a function defined in the same file. (regression from
681 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
683 * bug fix: spurious errors during QUIT when standard streams were closed.
685 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
686 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
687 years, is now no longer supported.
688 * enhancement: read() and write() have been added to SB-POSIX.
689 * enhancement: types of DEFSTRUCT constructors are proclaimed more
690 accurately, allowing better typechecking of call-sites.
691 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
692 are no longer caught. (reverted to pre 1.0.34 behaviour)
693 * optimization: slightly faster ISQRT. (lp#713343)
694 * bug fix: better support for Solaris /bin/sh in sh-based tests.
695 * bug fix: TRACE behaves better when attempting to trace undefined
696 functions. (lp#740717)
697 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
698 to (FUNCALL #'(LAMBDA ...) ...).
699 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
700 a compile-time error. (lp#720382)
701 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
703 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
704 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
705 optimization. (regression from 1.0.45.18/1.0.46.15)
706 * bug fix: package locks did not protects against compile-time side-effects
707 of DEFUN. (lp#675584)
708 * bug fix: --dynamic-space-size argument is validated more carefully.
710 * bug fix: memory fault from printing a malformed simple-condition.
712 * bug fix: redefining classes so that slot-definition classes change now
713 engages the obsolete instance protocol. (lp#766271)
714 * bug fix: constant improper lists could break source coverage recording.
716 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
719 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
720 * bug fix: fix mach port rights leaks in mach exception handling code on
721 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
723 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
724 * enhancement: redefinition warnings for macros from different files. (lp#434657)
725 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
726 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
727 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
728 processed using EVAL -- now the appropriate toplevel form is reported instead.
729 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
730 declarations. (lp#726331)
731 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
732 that NIL/NULL is excluded from the type.
733 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
735 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
737 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
738 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
739 stack-allocated values out of their dynamic-extent. (lp#310175)
740 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
741 x86-64 builds caused a type-error.
742 * bug fix: calling COMPILE with something else than a lambda-expression as the
743 second argument reports a more sensible error. (lp#718905)
744 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
745 are detected. (lp#520607)
746 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
748 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
749 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
750 methods. (regression from 1.0.45.18)
751 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
752 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
753 * bug fix: several foreign functions accepting string also accepted NIL and
754 consequently caused a memory fault at 0 now signal a type-error instead.
756 * bug fix: under rare circumstances, constraint propagation could rewrite a
757 variable reference to refer to a variable not in scope, causing an error
758 during physical environment analysis when attempting to close over the
759 variable. (lp#551227)
760 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
762 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
763 * enhancement: largefile support on Solaris.
764 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
765 arguments (lp#710017)
766 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
767 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
769 * optimization: ERROR and CERROR are approximately 5 times faster.
770 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
771 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
772 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
773 up instance creation in those cases.
774 * optimization: arithmetic operations with multiple constant arguments in now
775 have them reduced at compile-time. (lp#676414)
776 * optimization: determining current character position on string-streams for
777 pretty-printing was overly slow.
778 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
779 lifetime analysis to overwrite closed-over variables (lp#681092).
780 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
781 were not handled correctly (lp#713063).
782 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
784 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
785 mistake. (lp#667297).
786 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
787 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
788 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
789 unintern the wrong symbol with the same name. (lp#693796)
790 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
791 making it possible to restore the initial table if it has been messed up.
794 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
795 * enhancement: ~/ and ~user/ are treated specially in pathnames.
796 Refer to documentation for details.
797 * enhancement: ASDF has been updated to version 2.010.
798 * optimization: mutated closed-over variables that are only accessed by
799 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
800 declared to be DYNAMIC-EXTENT) are stored directly in their containing
801 stack frame, rather than allocating a VALUE-CELL (lp#586103).
802 * optimization: UNWIND-PROTECT cleanup functions are now declared
804 * bug fix: backtracing function with &REST arguments now shows the full
805 argument list. (lp#310173)
806 * bug fix: return types for functions with complex lambda-lists are now
807 derived properly (lp#384892)
808 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
809 long string arguments slowed the compiler down to a crawl.
810 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
811 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
812 in the DEFMETHOD body.
813 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
814 messages, being instead replaced with the corresponding function name.
815 * bug fix: don't derive overly complex unions of numeric types for arithmetic
816 operators. (lp#309448)
818 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
819 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
820 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
821 * enhancement: ALLOCATION-INFORMATION also provides the page the object
823 * enhancement: default dynamic-space size can be configured at build-time
824 without touching source, using the --dynamic-space-size argument to make.sh.
825 * enhancement: DESCRIBE recognizes symbols naming optimization policy
826 qualities, and mentions ALWAYS-BOUND declarations.
827 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
829 * enhancement: ASDF has been updated to 2.009.
830 * enhancement: the system detects known type-erros in calls better,
831 signalling a full warning about violated proclaimed FTYPEs and violations
832 of derived FTYPEs within the same file, including self-calls.
833 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
834 * optimization: constant-folding exploits numeric and character types, in
835 addition member types.
836 * optimization: numeric, character and member types that are inhabited by
837 exactly one value are tested with EQL.
838 * optimization: more conditional branches are eliminated during IR1.
839 Branches are simplified before performing if/if-conversion, and simple
840 equivalent branches (that only read the same constant or variable) are
842 * improvements to the Windows port:
843 ** change: canonical unparsing form for pathname namestrings now uses / as
844 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
845 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
846 on Windows. (thanks to Kalyanov Dmitry)
847 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
849 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
850 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
851 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
852 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
854 * bug fix: interrupts arriving during CL:OPEN caused an error.
855 * bug fix: overeager character buffering could cause input to block
856 spuriously when reading from a pipe (lp#643686)
857 * bug fix: more efficient timer expiry should avoid starvation on systems
858 where number of SIGALRMs per second is restricted. (lp#375515)
859 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
860 * bug fix: compile-times no longer scale linearly with the size of
861 quoted lists in source-code. (lp#654289)
862 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
863 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
864 so badly. (lp#654485)
865 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
866 an error for eg. STRUCTURE. (lp#458015)
867 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
868 (lp#613871, thanks to Roman Marynchak)
869 * bug fix: more reliable &REST list type derivation. (lp#655203)
870 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
871 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
872 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
873 also declared NOTINLINE. (lp#655581)
874 * bug fix: the compiler could attempt to emit constant left shifts of
875 greater value than n-word-bits. (lp#309063)
876 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
877 type information for the function being set. (lp#659220)
878 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
879 containing self-calls were recompiled with a new signature, and failed
880 to warn when a self-call using the old signature was left in. (lp#655126)
881 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
882 :DEFAULT when the default external had character size other than 8 bits.
884 * bug fix: derived types of functions in the same file were implicitly
885 trusted, leading to potential heap corruption when those function were
886 defined incompatibly. (lp#657499)
887 * bug fix: existing ASDF source registries are ignored when building
889 * bug fix: short-form DEFSETF checks that the second argument is a symbol
890 (lp#655824, thanks to Roman Marynchak)
891 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
892 package-lock violation was detected. (lp#660752)
893 * bug fix: the system can store different docstrings for a single function
894 under different names. (lp#661631, regression from 1.0.29.24)
895 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
896 properly. (lp#384801)
897 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
898 of specified length could confuse the type derivation in unsafe code.
900 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
901 fork with multiple Lisp threads running is made on every platform,
902 not just Darwin. (lp#451111)
903 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
904 around when core was saved, which could cause undefined behaviour when the
906 * bug fix: Allow UNTRACE of functions that are no longer defined
907 (lp#667657, thanks to Attila Lendvai)
908 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
909 compile-time warning (lp#664373, thanks to Stas Boukarev)
911 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
912 * incompatible change: FD-STREAMS no longer participate in the serve-event
913 event-loop by default. (lp#316072)
914 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
915 affects streams from CL:OPEN.
916 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
917 default, but this is liable to change: applications needing serve-event
918 for socket streams should explicitly request it using :SERVE-EVENTS T
920 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
922 * enhancement: CLOS effective method functions and defclass slot typechecking
923 function now have debug names for use in backtraces and profiles.
924 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
926 * enhancement: symbols are printed using fully qualified names in several
927 error and warning messages which are often associated with package
928 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
929 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
930 thanks to Andrew Golding)
931 * bug fix: reading /proc files on Linux works. (lp#425199)
932 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
934 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
935 breaking code that tried to write the value of a printer control variable.
936 (lp#581564, thanks to Stas Boukarev)
937 * bug fix: WRITE compiler macro did not handle output stream designators
938 correctly. (lp#598374, thanks to Stas Boukarev)
939 * bug fix: better availability of names of foreign functions in backtraces
940 on Linux. (lp#626962, thanks to Stas Boukarev)
941 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
942 lp#627581, thanks to Josh Elsasser and Jim Wise)
943 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
944 thanks to Josh Elsasser)
945 * bug fix: using aliases for builtin classes as defmethod specializers
946 without adding DEFTYPEs for them works. (lp#618387)
947 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
949 * bug fix: legally dynamic-extent lists and vectors used as
950 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
951 * bug fix: inline-expansion creating references to dead lambda-variables
952 (lp#454681, thanks to Alexey Dejneka)
953 * bug fix: better error message for bogus numerical arguments to RANDOM.
954 (lp#598986, thanks to Stas Boukarev)
955 * bug fix: the compiler occasionally inlined references from incompatible
956 environments occurs. (lp#308951)
957 * bug fix: the compiler threw an error when trying to compile a local
958 function (labels or flet) known to take a specialized complex argument.
959 (not in launchpad, reported by sykopomp in #lispgames)
960 * bug fix: package-locks failed to protect against compile-time effects of
961 DEFUN when the symbol previously had a macro definition. (lp#576637)
962 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
963 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
964 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
965 * bug fix: evaluation in debugger REPL works using the global context when
966 in frames that do not have sufficient debug information.
967 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
969 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
971 * bug fix: interrupt taking longer than the requested period caused SLEEP
972 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
974 changes in sbcl-1.0.42 relative to sbcl-1.0.41
976 ** Cross-compilation host is now specified to make.sh using
977 command-line argument --xc-host=<command> instead of a positional
978 argument. (thanks to Daniel Herring)
979 ** Install location can be specified to make.sh using command-line
980 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
981 * optimization: The default implementation of
982 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
983 * enhancement: Explicit memory barrier operations are now available for use
984 by multithreaded code. See documentation for details.
985 * enhancement: Experimental support for threading on Linux/PPC.
986 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
987 * bug fix: EXPT signals an error if first argument is a zero and second
988 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
989 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
990 (lp#576594, thanks to Roman Marynchak)
991 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
992 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
994 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
995 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
996 cached, leading to many fewer expensive calls to
997 COMPUTE-APPLICABLE-METHODS.
998 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
999 CLASS argument, search for and call an appropriate optimized ctor function
1001 * bug fix: WRITE always returns the correct value.
1003 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1004 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1005 * bug fix: Name conflicts between symbols passed as arguments to a single
1006 call to IMPORT no longer add multiple symbols with the same name to the
1007 package (detectable via DO-SYMBOLS).
1008 * bug fix: support building without the dlshim on darwin x86 and x86-64
1010 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1012 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1013 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1015 * bug fix: linkage-table entries on PPC now no longer overflow their
1016 space allocation (potentially causing crashes if they are written out
1018 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1019 platforms, preventing the GC from seeing stale pointers on the control
1020 stack in subsequent GCs (which would, and does, break invariants).
1021 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1022 * bug fix: Literal characters with code points greater than about 32767
1023 now work on PPC UNICODE builds.
1024 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1025 high order bits are explicitly cleared out. In some contrived situations,
1026 this could lead to wrong results in mixed real/complex float arithmetic.
1027 * bug fix: Fix function/macro redefinition warnings when building with
1028 clisp. (lp#576787, thanks to Josh Elsasser)
1029 * new platform: experimental support for ppc/openbsd (thanks to Josh
1031 * bug fix: Floating-point traps now work on ppc/linux.
1033 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1034 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1035 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1036 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1037 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1038 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1039 SB-THREAD:GRAB-MUTEX.
1040 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1041 contain additional data structures and tools for concurrent programming;
1042 at the moment it contains a lock-free queue, and a lock-free mailbox
1044 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1045 GET-MUTEX but takes &key rather than &optional parameters. Also added
1046 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1048 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1049 SB-THREAD:WAIT-ON-SEMAPHORE.
1050 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1052 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1053 conditions to defer the deadline for forever.
1054 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1056 * enhancement: errors from NO-APPLICABLE-METHOD and
1057 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1058 generic function call.
1059 * enhancement: SB-BSD-SOCKET improvements
1060 ** sockets and socket streams now have a more informative printed
1061 representation based on the corresponding SOCKET-NAME and
1063 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1065 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1066 CL:CLOSE when appropriate, and no longer disassociates the stream
1067 from the socket if close failed. (lp#543951)
1068 * improvements to the instrumenting profiler
1069 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1070 ** optimization: counters no longer use locks for the overflow mode.
1071 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1072 incurred an off-by-one miscount.
1073 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1074 * enhancement: improved DEFMETHOD pretty-printing.
1075 * enhancement: perform range reduction when arguments are too large for
1076 x87's transcendentals (instead of returning 0). (lp#327192)
1077 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1078 some of CL-PPCRE's macros. (lp#570079)
1079 * enhancement: our machine code is slightly less hostile to valgrind on
1081 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1082 to Robert Swindells and Aleksej Saushev)
1083 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1084 * bug fix: a rare case of startup-time page table corruption.
1085 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1086 to timeouts could be left in an inconsistent state.
1087 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1088 * bug fix: misoptimization of multiplication by one in
1089 (SB-C::FLOAT-ACCURACY 0) policies.
1090 * bug fix: miscounts in SB-PROFILE.
1091 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1092 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1093 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1094 up itself" (March 2010) for further details.
1095 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1096 against length of the list if the element is found before the specified
1097 END is reached. (thanks to Alec Berryman, lp#554385)
1098 * bug fix: errors signalled during package graph modification no longer
1099 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1100 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1101 :SB-DOC feature. (lp#552564)
1102 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1103 * bug fix: more robust runtime executable path detection. (lp#375549)
1104 * bug fix: GCD always returns positive values. (lp#413680)
1105 * bug fix: Converting division to multiplication by reciprocal handles
1107 * bug fix: We were too eager in eliding range reduction tests on x87.
1108 The maximal magnitude is 2^63, not 2^64.
1109 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1111 * bug fix: Maybe restore buildability on Alpha.
1112 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1114 * bug fix: RANDOM-STATE can be printed readably again.
1115 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1116 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1117 types) could result in type mismatches during compilation.
1119 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1120 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1121 stack frame thrown from.
1122 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1123 compiler optimization qualities inside dynamic extent of its body.
1124 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1125 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1127 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1128 constraint propgation, allowing better compilation eg. when used to
1129 access structures with WITH-SLOTS. (lp#520366)
1130 * optimization: the compiler is now more aware of the type of the underlying
1131 storage vector for multidimensional simple arrays resulting in better code
1132 for accessing such arrays.
1133 * optimization: passing NIL as the environment argument to TYPEP no longer
1134 inhibits optimizing it. (lp#309788)
1135 * optimization: more efficient register usage when handling single-float
1136 arguments on x86-64. (thanks to Lutz Euler)
1137 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1138 pre-allocated temporary vectors. (lp#496249)
1139 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1140 in :INITIAL-CONTENTS. (lp#523612)
1141 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1142 functions. (lp#524707)
1143 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1144 WITH-SLOTS usages during compilation.
1145 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1146 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1147 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1148 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1149 instruction (tested on x86oid linux with ud2-breakpoints).
1150 * bug fix: slam.sh now works on win32.
1151 * bug fix: better differences of numeric types. (lp#309124)
1152 * bug fix: arrays declared intersection and union types can have their
1153 upgraded element type derived. (lp#316078)
1154 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
1155 threads started during profiling. (lp#472499)
1156 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
1158 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
1159 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
1160 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
1161 values instead of signaling an error. (lp#309093)
1162 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
1164 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
1165 declarations (lp#497321)
1166 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1167 and failed to detect circular lists (lp#452008)
1168 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1170 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1171 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1172 due to it, so that handlers can run.
1173 * bug fix: reparsing undefined types if they have become defined since
1174 parsing. (lp#309128)
1175 * bug fix: missing &REST type in a proclamation for a function with both
1176 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1177 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1178 expanded calls (lp#542174)
1179 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1180 than just at toplevel form.
1182 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1183 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1184 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1185 but work on type specifiers.
1186 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1187 to name a type specifier.
1188 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1189 specifier is valid where "valid" basically means "would be accepted as
1190 second argument of TYPEP".
1191 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1192 returns the function's declared, or derived FTYPE.
1193 * new feature: SB-POSIX now supports accessing the d_ino member of
1194 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1195 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1196 provide for seeding a RANDOM-STATE object with user-provided data or
1197 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1198 attempt to initialize the returned state from the operating system's
1199 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1200 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1201 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1202 * bug fix: Fix grammar and style issues for the docstrings of
1203 printer-related variables and functions. (Thanks to mon_key; launchpad
1205 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1207 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1208 in a row even though a handler defered the deadline long into the
1210 * bug fix: A deadline handler was run without interrupts enabled for a
1211 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1212 in infinitely spinning, non-killable threads.
1213 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1214 before reaching the erring stack frame.
1215 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1216 real power. (launchpad bug lp#525949)
1217 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1218 GENCGC platforms. (launchpad bug lp#529014)
1219 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1220 (launchpad bug lp#525916)
1221 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1222 (Thanks to Robert Goldman)
1224 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1225 * optimization: ROUND with a single single-float or double-float argument
1226 is properly inlined when possible.
1227 * optimization: Slightly better code is generated for integer<->float
1228 conversions and for single-float<->double-float conversions on x86-64.
1229 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1230 code for 32-bit and 64-bit rotations on x86-64.
1231 * bug fix: The install script changes the ownership of directories as well
1232 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1233 launchpad bug lp#508485)
1234 * bug fix: TRUNCATE with a single single-float or double-float argument is
1235 properly inlined when possible. (launchpad bug lp#489388)
1236 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1237 no longer causes a compiler error on x86 and ppc.
1238 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1239 always relative to *READTABLE* rather than the passed argument.
1241 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1242 * minor incompatible change: threading support is now enabled by default
1244 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1246 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1247 are now caught and reported just like errors during macroexpansion.
1248 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1249 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1250 * enhancement: ASDF systems can now depends on SB-QUEUE.
1251 * fixes and improvements related to Unicode and external formats:
1252 ** bug fix: error handling and restart usage in the ucs-2 external format
1254 ** there is now an implementation of the ucs-4 external format.
1255 ** the utf-16 and utf-32 external formats are supported.
1256 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1257 in the environment. setenv() and unsetenv() are also provided. (reported by
1258 Fare Rideau; launchpad bug lp#460455)
1259 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1260 loading. This ensures sensible errors for .FASL files from other
1261 implementations on case-insensitive filesystems. (reported by Willem
1262 Broekema; launchpad bug lp#489417)
1263 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1264 Willem Broekema; launchpad bug lp#489698).
1265 * bug fix: some minor code rearrangements to reenable warning-free building
1266 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1267 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1269 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1272 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1273 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1274 * improvement: support O_LARGEFILE access to files larger than 2GB on
1275 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1276 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1277 definitions for methods specializing on the passed class itself.
1278 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1279 definitions for methods specializing on the passed class itself, or on
1281 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1282 about itself during the build (e.g. for M-? in Slime), if this flag is
1283 enabled in customize-target-features.lisp. This will increase the core
1284 size by about 5-6mb, though, so it's mostly interesting to SBCL
1286 * new feature: various GENCGC tuning parameters have been experimentally
1287 documented and exported from SB-EXT. See documentation for details.
1288 * fixes and improvements related to Unicode and external formats:
1289 ** the Unicode character database has been upgraded to the
1290 Unicode 5.2 standard, giving names and properties to a number of new
1291 characters, and providing a few extra characters with case
1293 ** improvement: restarts for providing replacement input/output on coding
1294 errors for fd-stream external formats.
1295 ** improvement: where :<encoding> is a keyword corresponding to an
1296 external format the system supports, it is now possible to specify
1297 (:<encoding> :replacement <character>) as an external format which will
1298 automatically substitute <character> on encoding or decoding errors for
1299 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1301 ** improvement: the file streams underlying the standard streams (such as
1302 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1303 which uses the replacement mechanism to handle encoding errors,
1304 preventing various infinite error chains and unrecoverable I/O
1306 ** minor incompatible change: the utf-8 external format now correctly
1307 refuses to encode Lisp characters in the surrogate range (char-codes
1308 between #xd800 and #xdfff).
1309 ** fix a typo preventing conversion of strings into octet vectors
1310 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1312 ** fix a bug in the octet multibyte handling of decoding errors and the
1313 USE-VALUE restart. (launchpad bug lp#314939)
1314 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1315 restart on fd-stream decoding errors.
1316 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1317 error is near the end of file.
1318 ** fix a double-error case in unibyte octet conversions, when the first
1319 use of USE-VALUE is ignored.
1320 ** fix bugs in handling of undefined code points in unibyte encodings.
1321 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1322 streams after an UNREAD-CHAR.
1323 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1324 object is allocated in a boxed region of dynamic space.
1325 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1326 fork with multiple Lisp threads running is made, instead of going
1327 ahead with unpredictable consequences. (reported by Leslie Polzer)
1328 * bug fix: uses of slot accessors on specialized method parameters within
1329 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1330 error while finalizing the class. This fix may cause classes with slot
1331 accessors to be finalized later than previously. (reported by Lars Rune
1332 Nøstdal; launchpad bug lp#473699)
1333 * bug fix: restore buildability on the MIPS platform. (regression from
1334 1.0.30.38, reported by Samium Gromoff)
1335 * bug fix: inspecting closures is less likely to fail with a type error.
1336 * bug fix: no timer starvation when setting the system clock back.
1337 (launchpad bug lp#460283)
1338 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1339 standard pprint dispatch table as specified by CLHS.
1340 * bug fix: give CLISP a hint about a type declaration to enable it to build
1341 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1343 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1344 (reported by Attila Lendvai; launchpad bug lp#310132)
1345 * bug fix: distinguish in type specifiers between arrays that might be
1346 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1347 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1348 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1349 * bug fix: setting the value of a symbol-macro within a method in the
1350 presence of type declarations works properly again. (reported by Iban
1351 Hatchondo; launchpad bug lp#485019)
1353 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1354 * optimization: faster FIND and POSITION on strings of unknown element type
1355 in high SPEED policies. (thanks to Karol Swietlicki)
1356 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1358 * improvement: better error signalling for bogus parameter specializer names
1359 in DEFMETHOD forms (reported by Pluijzer)
1360 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1362 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1364 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1365 removes previous default initargs (reported by Lars Rune Nøstdal and
1367 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1368 lambda-lists. (reported by Peter Seibel)
1369 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1370 correctly when starting from an executable core without saved runtime
1371 options (reported by Faré Rideau, thanks to Zach Beane)
1372 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1373 an optimization note instead. (reported by Martin Cracauer)
1374 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1375 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1376 new process group if it doesn't need to share stdin with the sbcl
1377 process. (thanks to Leslie Polzer)
1378 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1379 (reported by Stanislaw Halik)
1381 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1382 * improvement: stack allocation is should now be possible in all nested
1383 inlining cases: failure to stack allocate when equivalent code is manually
1384 open coded is now considered a bug.
1385 * improvements related to Unicode:
1386 ** the Unicode character database has been upgraded to the
1387 Unicode 5.1 standard, giving names and properties to a number of new
1388 characters, and providing a few extra characters with case
1390 ** the system now recognizes and produces names for Unicode Hangul
1391 syllable characters.
1392 ** the EBCDIC-US external-format is now supported for octet operations
1393 (as well as for stream operations).
1394 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1395 be used to output toplevel compile-time effects into a separate .CFASL
1397 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1398 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1400 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1402 * optimization: division of floating point numbers by constants uses
1403 multiplication by reciprocal when an exact reciprocal exists.
1404 * optimization: multiplication of single- and double-floats floats by
1405 constant two has been optimized.
1406 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1407 sufficient type information is available. (thanks to Leslie Polzer)
1408 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1409 known structure objects are as efficient as defstruct generated accessors.
1410 * optimization: unused vector creation can now be optimized away.
1411 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1412 * improvement: a STYLE-WARNING is signalled when a generic function
1413 clobbers an earlier FTYPE proclamation.
1414 * improvement: the compiler is able to track the effective type of
1415 generic function across method addition and removal even in the
1416 absence of an explicit DEFGENERIC.
1417 * improvement: DESCRIBE now reports on symbols naming undefined
1418 but assumed or declared function as well.
1419 * improvement: recompilation of systems using SB-GROVEL now works
1420 (thanks to Leslie Polzer)
1421 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1422 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1424 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1425 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1426 well as user defined declaration names.
1427 ** VARIABLE-INFORMATION is now aware of alien variables.
1428 * improvement: improved address space layout on OpenBSD (thanks to Josh
1430 * improvement: pretty-printing of various Lisp forms has been improved
1431 (thanks to Tobias Rittweiler)
1432 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1433 unused were deleted in safe code. (reported by John Fremlin)
1434 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1436 * bug fix: some out-of-line array predicates were missing (reported by
1438 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1440 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1441 (thanks to Larry D'Anna)
1442 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1443 as well. (reported by Josh Elsasser)
1444 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1445 leading to possible attempts to delete the same file twice. See docstring
1446 on DELETE-FILE for details. (reported by John Fremlin)
1447 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1448 designator argument, rather than its truename. (reported by Luis
1450 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1451 information about some array types. (thanks to Luis Oliveira)
1452 * bug fix: moderately complex combinations of inline expansions could
1453 be miscompiled if the result was declared to be dynamic extent.
1454 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1455 form (+ <variable> <integer>) were miscompiled under certain
1457 * bug fix: in some cases no compiler note about failure to stack allocate
1458 was emitted, even if the objects were in fact heap allocated.
1459 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1460 allocation could cause objects users might reasonably expect to
1461 be heap allocated to be stack allocated.
1462 * bug fix: DESCRIBE signalled an error for generic functions under
1463 certain circumstances. (thanks to Leslie Polzer)
1464 * bug fix: Fixed spelling of an error message.
1466 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1467 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1468 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1469 of SB-THREAD:THREAD-ERROR-THREAD.
1470 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1471 * new feature: docstrings for local and anonymous functions are no longer
1472 discarded. (thanks to Leslie Polzer)
1473 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1474 values in other threads.
1475 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1476 about object allocation.
1477 * optimization: division of a real float by a complex float is implemented
1478 with a specialised code sequence.
1479 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1480 keywords is an order of magnitude faster.
1481 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1482 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1483 methods, and similarly for non-standard metaclass classes as long as there
1484 are no methods additional on MAKE-INSTANCE.
1485 * optimization: more efficient type-checks for FIXNUMs when the value
1486 is known to be a signed word on x86 and x86-64.
1487 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1488 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1490 * optimization: compiler is smarter about delegating argument type checks to
1492 * optimization: several character functions are now compiled somewhat more
1493 efficiently. (reported by Lynn Quam)
1494 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1495 * improvement: less unsafe constant folding in floating point arithmetic,
1496 especially for mixed complex/real -float operations.
1497 * optimization: constant double and single floats are stored in native
1498 unboxed format on x86[-64].
1499 * optimization: smarter code for arithmetic operations with constant floats,
1500 complex floats, or integers on x86[-64].
1501 * optimization: smarter code for conjugate/multiplication of float complexes
1502 and abs/negate of floats on x86-64.
1503 * optimization: more efficient complex float and real float operations on
1505 * improvement: complex float division is slightly more stable.
1506 * improvement: DESCRIBE output has been reworked to be easier to read and
1507 contains more pertinent information.
1508 * improvement: failure to provide requested stack allocation compiler notes
1509 provided in all cases (requested stack allocation not happening without a
1510 note being issued is now considered a bug.)
1511 * bug fix: SB-POSIX exports the documented types and functions
1512 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1513 types. (reported by "abhi")
1514 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1515 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1516 (thanks to Paul Khuong)
1517 * bug fix: looping around HANDLER-CASE could silently consume stack space
1518 on each iteration. (reported by "foobar")
1519 * bug fix: better error signalling when calls to functions seeking elements
1520 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1521 (reported by Tobias Rittweiler)
1522 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1523 directory components now works as it used to. (various prolems reported by
1524 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1525 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1526 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1527 * bug fix: bogus undefined variable warnings from fopcompiled references to
1528 global variables. (thanks to Lars Rune Nøstdal)
1529 * bug fix: foreign function names should now appear in backtraces on
1530 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1531 * bug fix: SETF compiler macro documentation strings are not discarded
1533 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1534 (thanks to Alex Plotnick)
1535 * bug fix: SLEEP accepts large integer arguments, truncating them to
1536 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1537 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1538 * bug fix: compiler notes for expensive slot type checks could be emitted
1539 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1541 changes in sbcl-1.0.29 relative to 1.0.28:
1542 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1543 https://bugs.launchpad.net/sbcl
1544 Bugs can be reported directly there, or by sending email to
1545 sbcl-bugs@lists.sourceforge.net
1546 (no subscription required.)
1547 * minor incompatible change: under weak type checking policy integer
1548 types are weakened less aggressively.
1549 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1550 allowed to return, which causes SBCL to quit with exit status 0. Previously
1551 if the function returned with a small integer return value, that value
1552 was accidentally reused as the exit status.
1553 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1554 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1555 :HASH-FUNCTION argument. Refer to user manual for details.
1556 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1558 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1559 microseconds since the Unix epoch on all platforms.
1560 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1561 allows the compiler to safely elide boundedness checks for special
1563 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1564 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1565 efficiency measure for threaded platforms, but also valueable in
1567 * new feature: UNC pathnames are now understood by the system on Windows.
1568 * optimization: the compiler uses a specialized version of FILL when the
1569 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1571 * optimization: accesses to potentially non-simple arrays where element type
1572 is known are 50% faster.
1573 * optimization: compiler now generates faster array typechecking code.
1574 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1576 * optimization: multidimensional array accesses in the absence of type
1577 information regarding array rank are approximately 10% faster due to
1578 open coding of ARRAY-RANK.
1579 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1580 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1582 * optimization: result of call to VECTOR can now be stack allocated.
1583 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1584 as long as the resulting array is one-dimensional and has a known
1585 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1586 length of the list matches the known length of the vector does not
1587 allocate the list as an intermediate step. Ditto for VECTOR and simple
1589 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1590 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1591 known element type, and is known to be simple and one dimensional.
1592 * improvement: SBCL now emits a compiler note where stack allocation was
1593 requested but could not be provided (not in all cases, unfortunately)
1594 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1595 * improvement: pretty-printing loop has been implemented properly. (thanks
1596 to Tobias Rittweiler)
1597 * documentation: CLOS slot typechecing policy has been documented.
1598 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1599 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1600 pointer, leading to memory faults. (thanks to Bart Botta)
1601 * bug fix: better floating point exception handling on x86/OpenBSD.
1602 (thanks to Josh Elsasser)
1603 * bug fix: exit status from QUIT when called under --script was lost
1604 (reported by Hubert Kauker)
1605 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1606 same implementation of FILL to initialize the array, even if a more
1607 efficient one was available (reported by Stas Boukarev, thanks to
1609 * bug fix: potential miscompilation of array stack allocation on x86 and
1610 x86-64. (reported by Time Tossavainen)
1611 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1612 result in their subforms being treated as top level forms. (reported by
1614 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1615 than a machine register could leave garbage in the high bits of the
1616 result register (bug 316325).
1617 * bug fix: disable address space randomization Linux/x86-64 as well,
1618 not just x86-64. (reported by Ken Olum)
1619 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1620 generate incorrect code.
1621 * bug fix: #201; type inference for CONS and ARRAY types could derive
1622 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1623 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1624 could not be assigned to or bound with PROGV. (reported by Lorenz
1626 * bug fix: the value of CL:- in the inspector was the previous expression
1627 evaluated rather than the expression being evaluated.
1628 * bug fix: constants can no longer be locally declared special.
1629 * bug fix: signals delivered to threads started from foreign land (read:
1630 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1631 thread by blocking all signals and resignalling.
1632 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1633 from :INITFORM, if any.
1635 changes in sbcl-1.0.28 relative to 1.0.27:
1636 * a number of bugs in cross-compilation have been fixed, with the ultimate
1637 result that building under (at least) clisp should be much more reliable.
1638 * minor incompatible changes: echo-streams now propagate unread-char to the
1639 underlying input stream, and no longer permit unreading more than one
1641 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1642 frames, allowing for instance more reliable backtraces.
1643 * improvement: the debugger REPL can now reference lexical variables
1644 by name directly for code compiled with (DEBUG 3).
1645 * improvement: errors from malformed declarations now have better source
1646 paths associated with them. (thanks to Tobias Rittweiler)
1647 * optimization: faster local calls on x86/x86-64
1648 * bug fix: some error messages for out-of-bound array indexes confused the
1649 index and the bound. (thanks to Stas Boukarev)
1650 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1652 * bug fix: running regressions tests in shells without OSTYPE set now works.
1653 (reported by Harald Hanche-Olsen)
1654 * bug fix: more robust static space exhaustion signalling from
1655 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1656 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1657 docstring away instead of storing it under names such as (LAMBDA (X)).
1658 (reported by Leslie Polzer)
1659 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1660 (thanks to Ole Arndt for the patch)
1661 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1662 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1663 potentially-invalid effective methods in its cache.
1664 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1665 instances as well (thanks to Paul Khuong)
1666 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1667 SB-POSIX:WAITPID and their C equivalents.
1668 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1670 changes in sbcl-1.0.27 relative to 1.0.26:
1671 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1672 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1673 * improvement: the system either recovers from stack exhaustion or dies
1674 properly as opposed to leaving the user uncertain of whether the handler
1675 trampled on some random memory next to the stack or having to rely on
1676 --lose-on-corruption (which is still a good idea to use in production
1677 because stack exhaustion can happen in signal handlers which will likely
1679 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1680 1.0.25.37, reported by Harald Hanche-Olsen)
1681 * bug fix: work around signal delivery bug in darwin (regression from
1682 1.0.25.44, reported by Sidney Markowitz)
1683 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1685 changes in sbcl-1.0.26 relative to 1.0.25:
1686 * incompatible change: an interruption (be it a function passed to
1687 INTERRUPT-THREAD or a timer function) runs in an environment where
1688 interrupts can be enabled. The interruption can use
1689 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1690 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1691 potentially running out of stack. Keep in mind that in the absence
1692 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1693 acquiring a lock can enable interrupts.
1694 * incompatible change: GC-OFF and GC-ON are removed, as they were
1695 always unsafe. Use WITHOUT-GCING instead.
1696 * new feature: runtime option --disable-ldb
1697 * new feature: runtime option --lose-on-corruption to die at the
1698 slightest hint of possibly non-recoverable errors: running out of
1699 memory, stack, alien stack, binding stack, encountering a memory
1700 fault, etc. In the absence of --lose-on-corruption a warning is
1702 * enhancement: detect binding stack exhaustion
1703 * enhancement: detect alien stack exhaustion on x86/x86-64
1704 * improvement: generally more stable and reliable interrupt handling
1705 * improvement: there is a per thread interruption queue,
1706 interruptions are executed in order of arrival
1707 * improvement: a repeating timer reschedules itself when the it has
1708 finished, but expiration times are spaced equally. If an
1709 expiration time is in the past it will trigger after a short grace
1710 period that may give a chance to other things to run.
1711 * optimization: slightly faster gc on multithreaded builds
1712 * optimization: faster WITHOUT-GCING
1713 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1714 important locks so that the debugger/handler doesn't produce
1715 recursive errors or deadlock.
1716 * bug fix: real-time signals are not used anymore, so no more
1717 hanging when the system wide real-time signal queue gets full.
1718 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1720 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1721 * bug fix: fix random memory faults related to interrupts on alpha
1722 * bug fix: fix random memory faults related to interrupts on sparc
1723 * bug fix: fix deadlocks related to starting threads
1724 * bug fix: fix deadlines on locks on futex platforms
1725 * bug fix: restore errno in signal handlers
1726 * bug fix: fix deadlocks related to hash tables
1727 * bug fix: fix deadlocks in pcl
1729 changes in sbcl-1.0.25 relative to 1.0.24:
1730 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1731 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1732 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1733 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1734 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1735 better name and does not return values so stale on multiprocessor systems.
1736 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1738 * improvement: unithread builds keep track of MUTEX-VALUE.
1739 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1740 stream anymore making it thread safe to have a concurrent reader and
1741 a writer, for instance, in a pipe.
1742 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1743 arguments, making compiler-macros for SETF-functions able to inspect
1744 their constant arguments.
1745 * improvement: COMPILE-FILE reports times with millisecond accuracy
1746 (thanks to Luis Oliveira)
1747 * optimization: CHAR-CODE type derivation has been improved, making
1748 TYPEP elimination on subtypes of CHARACTER work better. (reported
1749 by Tobias Rittweiler, patch by Paul Khuong)
1750 * bug fix: setting alien structure fields of type struct by value now
1751 computes the right offset for the memory copy.
1752 * bug fix: compilation problem involving inlined calls to aliens with
1753 result type VOID. (reported by Ken Olum)
1754 * bug fix: #235a; sequential inline expasion in different policies no
1755 longer reuses the functional from the previous expansion site.
1756 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1757 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1758 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1759 cause an implied type redefinition. Regression from 1.0.21.29.
1760 * bug fix: sign-extension of small signed return values now works with C
1761 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1762 * improvements to the Windows port:
1763 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1764 Westfold, thanks to Rudi Schlatte)
1766 changes in sbcl-1.0.24 relative to 1.0.23:
1767 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1768 vector of a multidimensional SIMPLE-ARRAY.
1769 * new feature: the system now signals a continuable error if standard
1770 readtable modification is attempted. (thanks to Tobias Rittweiler)
1771 * new feature: DIRECTORY has been extended with a non-standard keyword
1772 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1773 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1774 has been robustified and documented better. (thanks to Robert Goldman)
1775 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1776 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1777 * tradeoff: constant FORMAT control strings are now compiled unless
1778 SPACE > SPEED (previously only when SPEED > SPACE.)
1779 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1781 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1783 * bug fix: lexical type declarations are now correctly reported by
1784 SB-CLTL2. (reported by Larry D'Anna)
1785 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1786 using UTF-8 as external format. (thanks to Luis Oliveira)
1787 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1788 are signalled correctly. (thanks to Stas Boukarev)
1789 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1790 designator. (thanks to Tobias Rittweiler)
1791 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1792 designator, and returns T instead of the function. (thanks to
1794 * bug fix: direct superclasses of STANDARD-CLASS and
1795 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1796 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1797 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1798 when no class with the named slot yet exists no longer causes a
1799 compile-time style-warning.
1800 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1801 in safe code. (reported by Didier Verna)
1802 * bug fix: #430; nested structure constructors can stack allocate.
1803 * bug fix: on some 64-bit platforms dynamic space size was truncated
1804 to #xffff0000 bytes. (reported by Benjamin Lambert)
1805 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1806 REPL unusable. (reported by Daniel Herring)
1807 * bug fix: return values of READ-SEQUENCE did not take :START into
1808 account on file streams, regressions since 1.0.12.22. (reported by
1809 Thomas Russ, patch by Paul Khuong)
1810 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1811 method specializer used to confuse permuation vector optimization.
1812 * bug fix: system inserted bogus implicit type declarations for local
1813 special variables in DEFMETHOD bodies.
1814 * bug fix: #354; duplicated frames in backtraces due to
1815 non-tail-call-optimized XEPs to functions with return type NIL
1817 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1818 initializes structure object slots according to DEFSTRUCT initforms,
1819 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1820 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1821 (reported by Bruno Haible and Stephen Wilson)
1822 * bug fix: #395; fill-pointer output streams used now support
1823 element-type BASE-CHAR as well.
1824 * bug fix: compiler error when attempting to derive return value of
1825 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1827 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1829 * bug fix: Mac OS X binaries should now be portable between Leopard
1832 changes in sbcl-1.0.23 relative to 1.0.22:
1833 * enhancement: when disassembling method functions, disassembly
1834 for the associated fast function is also produced.
1835 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1837 * optimization: printing with *PRINT-PRETTY* true is now more
1838 efficient as long as the object being printed doesn't require
1839 special handling by the pretty printer.
1840 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1841 now interact correctly with type declarations.
1842 * partial bug fix: PCL detects infinite recursion during wrapper
1843 validation. (thanks to Attila Lendvai)
1844 * bug fix: #426; nested function calls are inlined properly.
1845 Previously if FOO was an inline function, in calls of the form
1846 (FOO (FOO ...)) the outer call was not inlined.
1847 * bug fix: long long arguments passed in registers to alien
1848 functions on PowerPC Linux and NetBSD are now handled correctly
1849 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1851 changes in sbcl-1.0.22 relative to 1.0.21:
1852 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1853 for the shared object in the current directory, but passes the native
1854 namestring of the designated pathname to the operation system's shared
1855 object loading function as-it.
1856 * minor incompatible change: --disable-debugger toplevel option now takes
1857 effect before processing of initialization files and --eval or --load
1859 * new feature: new commandline argument: --script, which supports
1860 shebang lines. See documentation for details. (based on work by
1862 * new feature: SAVE-LISP-AND-DIE can save current values of
1863 --dynamic-space-size and --control-stack-size in the executable core,
1864 causing it to skip normal runtime option processing. See documentation
1865 for details. (thanks to Zach Beane)
1866 * enhancement: inoccous calls to EVAL or generic functions dispatching
1867 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1868 * enhancement: the system no longer resignals errors from --load and
1869 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1870 associated with the original error to be lost. (thanks to Ariel
1872 * enhancement: :DONT-SAVE keyword argument has been added to
1873 LOAD-SHARED-OBJECT for controlling interaction with
1874 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1875 the effects of an earlier LOAD-SHARED-OBJECT call.
1876 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1877 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1878 provided. (reported by Cedric St-Jean)
1879 * bug fix: circularity handling in the reader did not treat raw
1880 structure slots correctly. (reported by Cedric St-Jean)
1881 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1882 file descriptors when there were none.
1883 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1884 was broken. (reporteed by Willem Broekema)
1885 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1886 pathnames without a directory.
1887 * bug fix: COMPILE-FILE did not warn about undefined variable
1888 references at toplevel, and LOAD of the resulting fasl did
1889 not signal an error.
1890 * bug fix: functions with non-required arguments used to end up with
1891 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1892 * bug fix: redefining a function with non-required arguments didn't
1893 update the system's knowledge about its call signature properly.
1894 * bug fix: fixed #431; incompatible alien record type redefinitions
1895 are detected and handled. (reported by Neil Haven)
1896 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1897 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1899 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1900 after alien stack frames.
1901 * bug fix: strings passed to mk{s,d}temp lacked null termination
1903 changes in sbcl-1.0.21 relative to 1.0.20:
1904 * new feature: the compiler is able to track the effective type of a
1905 generic function across method addition and removal.
1906 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1907 appropriately typed structure slots without locking.
1908 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1909 information like those gathered by TIME using a programming-friendly
1911 * new feature: TIME reports time taken even if the form performs a
1912 non-local transfer of control.
1913 * enhancement: reduced conservativism on GENCGC platforms: on
1914 average 45% less pages pinned (measured from SBCL self build).
1915 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1916 mutate constant symbols or violate declaimed type of the symbol.
1917 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1918 sleeping on the semaphore in heavily contested semaphores.
1919 * bug fix: semaphores and condition variables were not interrupt
1921 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1922 owned by other threads anymore.
1923 * bug fix: FIND on lists called KEY outside the specified
1924 subsequence. (reported by budden)
1925 * bug fix: LOG doesn't use single-float intermediate results when
1926 given mixed integer and double-float arguments, leading to better
1927 precision. (reported by Bob Felts)
1928 * bug fix: LOG with base zero returned values of inconsistent type.
1930 changes in sbcl-1.0.20 relative to 1.0.19:
1931 * minor incompatible change: OPTIMIZE qualities
1932 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1933 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1934 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1935 * documentation: some slot access efficiency guidelines have been
1936 added to the user manual.
1937 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1938 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1939 as ASSOC and MEMEBER.
1940 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1941 to more efficient EQ-comparison versions more often.
1942 * optimization: enhanced derivation of DOLIST iteration variable type
1944 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1946 * optimization: runtime lookup of function definitions can be
1947 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1948 * optimization: compiler is able to derive the return type of
1949 (AREF (THE STRING X) Y) as being CHARACTER.
1950 * optimization: CLRHASH on empty hash-tables no longer does pointless
1951 work. (thanks to Alec Berryman)
1952 * optimization: REPLACE deftransforms don't punt when :START1 or
1954 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1955 no longer emits a code deletion note. (reported by Andrew
1957 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1958 functions with an odd number of &OPTIONAL arguments, a &REST
1959 argument, and one or more &KEY arguments at the call site.
1960 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1961 arguments appeared at call sites as well.
1962 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1963 READ-LINE &co can no longer read from them afterwards. (reported
1965 * bug fix: fixed #427: unused local aliens no longer cause compiler
1966 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1968 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1969 alien-stack leakage. (reported by Andy Hefner)
1970 * bug fix: PROGV signals an error when an attempt to violate declared
1971 type of a variable or bind a constant is made.
1972 * bug fix: SET signals an error when an attempt to violate declared
1973 type of a variable is made.
1974 * bug fix: restart computation during the execution of a restart
1975 test function no longer causes infinite recursion. (reported by
1977 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1978 signals an error. (thanks to Pierre Mai)
1979 * bug fix: EXPORT left symbol unexported in conflict situations.
1980 (thanks to Michael Weber)
1981 * bug fix: correctly handle name conflicts involving CL:NIL.
1982 (thanks to Michael Weber)
1983 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1984 conflicts arising from USEing package with conflicting symbols
1985 correctly. (thanks to Michael Weber)
1987 changes in sbcl-1.0.19 relative to 1.0.18:
1988 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1989 warnings that go otherwise unhandled will be muffled if they are
1990 of the type that's the value of this variable.
1991 * optimization: stack allocation is slightly more efficient on x86
1993 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1994 where a raw slot always is initialized using the initform whose
1995 type is not know sufficiently well a compile-time are now compiled
1996 correctly. (reported by John Morrison)
1997 * bug fix: compiler no longer makes erronous assumptions in the
1998 presence of non-foldable SATISFIES types.
1999 * bug fix: stack analysis missed cleanups of dynamic-extent
2000 arguments in non-let-converted calls to local functions.
2001 * improvements to the Windows port:
2002 ** adjusted address spaces for building on both Win32 and
2003 Win64. (thanks for John Connors)
2004 * fixed some bugs revealed by Paul Dietz' test suite:
2005 ** interval arithmetic during type derivation used inexact integer
2006 to single-float coercions.
2007 ** arithmetic operations involving large integers and single
2008 floats give the same results in compiled and interpreted code.
2009 ** deriving the result type of COERCE no longer signals an error
2010 if the derived type of the second argument is a MEMBER type
2011 containing invalid type specifiers.
2012 ** ADJOIN with constant NIL as second argument works correctly.
2013 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2015 changes in sbcl-1.0.18 relative to 1.0.17:
2016 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2017 profiles only the current thread.
2018 * minor incompatible change: changes to SYMBOL-VALUE of constants
2019 defined with DEFCONSTANT now signal an error.
2020 * enhancement: SB-SPROF now has support for wallclock profiling,
2021 and is also able to profile specific threads. REPORT output
2022 has also additional sorting options.
2023 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2025 * optimization: structure allocation has been improved
2026 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2027 ** out of line constructors are ~10% faster.
2028 ** inline constructors are ~15% faster.
2029 ** inline constructors are capable of dynamic extent allocation
2030 (generally on x86 and x86-64, in some cases on other platforms
2032 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2034 * optimization: file compiler is now able to coalesce non-circular
2035 lists, non-base strings, and bit-vectors. Additionally, constants
2036 are never referenced through SYMBOL-VALUE at runtime.
2037 * optimization: code defining methods on PRINT-OBJECT (and other
2038 generic functions in the COMMON-LISP package) now loads faster.
2039 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2041 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2042 fasl is now deleted. (reported by Attila Lendvai)
2043 * bug fix: READ-LINE always returned NIL for the last line in files.
2044 (reported by Yoshinori Tahara)
2045 * bug fix: more accurate disassembly annotations of foreign function
2046 calls. (thanks to Andy Hefner)
2047 * bug fix: trimming non-simple strings and non-string string
2048 designators when the there is nothing to trim works properly.
2049 (thanks to James Knight)
2050 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2051 (thanks to Travis Cross)
2052 * fixed some bugs revealed by Paul Dietz' test suite:
2053 ** NIL is a valid function name (regression at 1.0.13.38)
2054 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2055 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2056 fill pointers properly (regression at 1.0.12.23)
2057 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2058 displacement indices properly (regression at 1.0.12.23)
2060 changes in sbcl-1.0.17 relative to 1.0.16:
2061 * temporary regression: user code can no longer allocate closure
2062 variable storage on stack, due to bug 419 without explicitly
2063 requesting it. Please consult sbcl-devel for advice if you need to
2064 use this feature in the meanwhile.
2065 * new feature: runtime argument --control-stack-size can be used to
2066 adjust thread default control stack size.
2067 * enhancement: improved TIME output
2068 ** all times are reported using the measured accuracy (milliseconds
2069 for real and GC times, microseconds for everything else.)
2070 ** processor cycle counts on x86 and x86-64.
2071 ** interpreted forms are counted for both evaluator modes.
2072 ** number of lambdas converted by the compiler is reported.
2073 ** CPU percentage report (computed from real and total run time.)
2074 ** more comprehensive run time reporting, using a condenced format
2075 ** interperted form, lambda, and page fault counts are omitted
2077 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2079 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2080 * optimization: two argument forms of LAST are upto ~10% faster
2081 in normal SPEED policies.
2082 * optimization: NCONC no longer needs to heap cons its &REST list
2083 in normal SPEED policies.
2084 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2085 to Sidney Markowitz)
2086 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2087 regression since 1.0.9.1. (thanks to Eric Marsden)
2088 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2089 since 1.0.15.36. (thanks to Paul Khuong)
2090 * bug fix: LAST when always returned the whole list when given a bignum
2091 as the second argument.
2092 * bug fix: dynamic extent allocation of nested lists and vectors
2093 could leak to otherwise accessible parts.
2094 * bug fix: invalid optimization of heap-allocated alien variable
2096 * bug fix: fasl header checking is less vulnerable to different
2097 platform word lengths.
2098 * bug fix: more correct assembler syntax for GNU binutils
2099 2.18.50.0.4 support. (thanks to Marijn Schouten)
2100 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2102 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2103 declarations) successfully. (reported by Attila Lendvai)
2105 changes in sbcl-1.0.16 relative to 1.0.15:
2106 * minor incompatible change: revert the changes to sb-posix's error
2107 signaling added in 1.0.14.
2108 * minor incompatible change: change PROBE-FILE back to returning
2109 NIL whenever we can't get a truename, as was the case before 1.0.14.
2110 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2111 inherits from ERROR instead of just CONDITION.
2112 * new feature: SB-INTROSPECT can provide source locations for instances
2113 as well. (thanks to Tobias Rittweiler)
2114 * optimization: binding special variables now generates smaller code
2115 on threaded platforms.
2116 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2117 and cases where no :TEST is given but the compiler can infer that
2118 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2119 * optimization: better LOGNOT on fixnums.
2120 * optimization: modular arithmetic for a particular requested width
2121 is implemented using a tagged representation unless a better
2122 representation is available.
2123 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2124 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2125 for wellformedness and returns a specialized vector. (reported by
2126 Francois-Rene Rideau)
2127 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2128 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2129 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2130 unscheduling timer at the same time as another timer fires.
2131 * bug fix: don't reschedule timers for dead threads.
2132 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2133 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2134 bogus errors if select() was interrupted.
2135 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2137 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2138 * enhancement: cleaner backtraces for interactive interrupts, as
2139 well as other cases where the interesting frames used to be
2140 obscured by interrupt handling frames.
2141 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2142 now supported, and tracing a whole package using (TRACE "FOO") now
2143 traces SETF-functions as well.
2144 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2145 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2146 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2147 * unreadably printed representation of hash-tables now includes
2149 * bug fix: partially fixed #188: type propagation from assignments
2150 is now more efficient.
2151 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
2152 'DOUBLE-FLOAT) are not flushable.
2153 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
2154 full address of the object, and none of the tag bits.
2155 * bug fix: readably printing hash-tables now respects other printer
2156 control variables. (reported by Cedric St-Jean)
2157 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
2158 keyword with MAKE-HASH-TABLE.
2159 * bug fix: export SB-POSIX:MKSTEMP.
2160 * bug fix: SORT was not interrupt safe.
2161 * bug fix: XREF accounts for the last node of each basic-block as
2163 * bug fix: MAKE-INSTANCE optimizations interacted badly with
2164 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
2165 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2166 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2167 create obsolete instances in the case of redefinition or
2168 obsoletion of a superclass. (thanks to Andy Hefner)
2169 * bug fix: Support for the Alpha architecture has been revived; it had
2170 suffered somewhat from lack of maintenance since sbcl-1.0.
2171 * improvements to the Windows port:
2172 ** The system detects the codepage to use at startup, instead of
2173 using the value from the saved core. (thanks to Kei Suzuki)
2175 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2176 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2177 (see documentation for details.)
2178 * revived support for OpenBSD (contributed by Josh Elsasser)
2179 * partially fixed bug #108: ROOM no longer suffers from occasional
2180 (AVER (SAP= CURRENT END)) failures.
2181 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2182 bodies no longer cause a WARNING to be signalled. (reported by
2184 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2185 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2186 the bug in TRUNCATE.) (reported by Michael Weber)
2187 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2188 no samples. (reported by Andy Hefner)
2189 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2190 no longer appear as (NIL ...) frames in backtraces.
2191 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2192 is now actually exported from SB-EXT as documented. (reported by
2194 * bug fix: sb-aclrepl now correctly understands how to inspect
2195 single-floats on 64-bit platforms where single-floats are not boxed.
2196 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2197 yet been finalized. (reported by Levente Meszaros)
2198 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2199 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2200 SBCL-specific optimize qualities.
2202 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2203 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2204 an executable in the search path, and does so in the child
2205 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2206 been removed; it can be found in the CVS history, for somebody who
2207 needs that search behavior (see the manual).
2208 * minor incompatible change: compiler policy re. weakening type
2209 checks has changed: now type checks are weakened only if SAFETY < 2
2211 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2212 unparsing of directory pathnames as files. Analogously,
2213 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2214 filename to parse into a directory pathname.
2215 * enhancement: implicit generic function creation now signals a
2216 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2217 users can bind handlers for and muffle around calls to LOAD.
2218 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2219 to be used (using the default stream external format), and allows
2220 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2221 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2222 strings and vectors whose element-type or simplicity is not fully
2223 known at compile-time.
2224 * optimization: STRING-TRIM and related functions no longer allocate
2225 a new string when no trimming needs to be performed. These functions
2226 are also faster than before when the input string has been declared
2228 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2229 * optimization: READ-LINE is significantly faster for files containing
2231 * optimization: non-open coded uses of character comparison operators
2232 (e.g. char=) no longer cons when called with more than one parameter
2233 on platforms supporting dynamic-extent allocation.
2234 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2235 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2236 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2238 * bug fix: some sequence functions elided bounds checking when
2240 * bug fix: too liberal weakening of union-type checks when SPEED >
2242 * bug fix: more bogus fixnum declarations in ROOM implementation
2245 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2246 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2247 :SYNCHRONIZED argument, which makes the hash-table safe for
2248 concurrent accesses (but not iteration.) See also:
2249 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2250 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2251 * optimization: CONCATENATE on strings is an order of magnitude faster
2252 in code compiled with (> SPEED SPACE).
2253 * optimization: SUBSEQ is ~50% faster on lists.
2254 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2255 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2256 END is smaller then START.
2257 * bug fix: SB-PROFILE will no longer report extra consing for nested
2258 calls to profiled functions.
2259 * bug fix: ROOM implementation had bogus fixnum declarations which
2260 could cause type-errors when calling ROOM on large images.
2261 * bug fix: if file compilation is aborted, the partial fasl is now
2262 deleted, and COMPILE-FILE returns NIL as the primary value.
2263 * bug fix: number of thread safety issues relating to SBCL's internal
2264 hash-table usage have been fixed.
2265 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2266 be returned from its body when the values were being returned
2267 using unknown-values return convection and the W-P-O was wrapped
2268 inside an UNWIND-PROTECT.
2269 * bug fix: sb-posix should now compile again under Windows, enabling
2270 slime to work again.
2272 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2273 * incompatible change: hash-table accessor functions are no longer
2274 automatically protected by locks. Concurrent accesses on the same hash-table
2275 from multiple threads can give inconsistent results or even corrupt the
2276 hash-table completely. Multi-threaded applications should do their own
2277 locking at the correct granularity. In the current implementation it is
2278 still safe to have multiple readers access the same table, but it's not
2279 guaranteed that this property will be maintained in future releases.
2280 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2281 and will signal an error at runtime.
2282 * enhancement: SB-THREAD package now exports a semaphore interface.
2283 * enhancement: CONS can now stack-allocate on x86 and
2284 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2286 * enhancement: nested lists can now be stack allocated on
2287 platforms providing stack allocation support.
2288 * enhancement: dynamic-extent support has been extended to support
2289 cases where there are multiple possible sources for the stack
2291 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2292 if the mutex is uncontested on Linux.
2293 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2294 as specified by the CLHS. (thanks to Tobias Rittweiler)
2295 * bug fix: NaN comparison now works on x86-64.
2296 * bug fix: CLOSE :ABORT T on a stream with pending output now
2298 * bug fix: instances of non-standard metaclasses using standard
2299 instance structure protocol sometimes missed the slot type checks
2301 * bug fix: known functions can be inlined in high-debug code.
2303 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2304 * minor incompatible change: the MSI installer on Windows no longer
2305 associates .lisp and .fasl files with the installed SBCL.
2306 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2307 on Windows. (thanks to Luis Oliviera)
2308 * new feature: SB-CLTL2 contrib module now implements
2309 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2310 * optimization: scavenging weak pointers is now more efficient,
2311 requiring O(1) instead of O(N) per weak pointer to identify
2312 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2313 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2314 method bodies using constant slot-names when the first argument is
2315 a specializer parameter for the method.
2316 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2317 names, when the class of the instance is a direct instance
2318 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2319 as slow as the constant slot-name case.)
2320 * optimization: member type construction is now O(N) instead
2322 * optimization: UNION and NUNION are now O(N+M) for large
2323 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2325 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2326 now more readable in environments like Slime which display it.
2327 (thanks to Tobias C. Rittweiler)
2328 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2329 was able to infer the correct argument type for the object on which
2330 the CAS operation was being performed.
2331 * bug fix: copy propagation interfered with parallel assignment
2332 semantics in local calls. (reported by Paul Khuong)
2333 * bug fix: the signed modular fixnum shift compiled to wrong code on
2334 x86 and x86-64. (spotted by a slight modification to some of
2337 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2338 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2339 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2340 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2342 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2343 and generic function now print the object identity for anonymous
2344 instances. (thanks to Attila Lendvai)
2345 * enhancement: as an extension to MOP, SBCL now supports SETF of
2346 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2347 (thanks to Attila Lendvai)
2348 * enhancement: sb-cover has an alternate annotation mode which puts
2349 the form annotations at the car of the form, instead of annotating
2350 it completely. The benefit of this mode is that it shows better
2351 which forms were instrumented by the compiler.
2352 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2353 by printer control variables. (reported by Dan Corkill)
2354 * bug fix: system leaked memory when delayed output was performed by
2355 the OS in smaller chunks then expected. (thanks to David Smith)
2356 * bug fix: system leaked memory when file streams were not closed
2358 * bug fix: large objects written to slow streams that were modified
2359 after the write could end up with the modified state written to
2360 the underlying file descriptor.
2361 * bug fix: multiple threads operating in parallel on the same stream
2362 could cause buffer-overflows.
2363 * bug fix: source location information is stored correctly
2364 (broken since 1.0.6). This bug would generally show up as the
2365 Slime debugger highlighting the wrong form when the sldb-show-source
2367 * bug fix: Branch forms are again annotated as branches in the sb-cover
2369 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2370 on x86-64. (reported by Gregory Vanuxem)
2371 * bug fix: EQUALP could return wrong results for structures with raw
2372 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2373 word). (reported by Vjacheslav Fyodorov)
2374 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2377 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2378 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2379 atomic compare-and-swap operations on threaded platforms.
2380 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2381 allows assigning a global minimum value to optimization qualities
2382 (overriding proclamations and declarations).
2383 * enhancement: closed over variables can be stack-allocated on x86
2385 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2387 * optimization: slot definition lookup is now O(1). This speeds up
2388 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2389 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2390 * optimization: ASSOC and MEMBER can now be open-coded for all
2391 combinations of keyword arguments when second argument is constant
2392 and SPEED >= SPACE. In other cases a specialized version is
2394 * bug fix: using obsoleted structure instances with TYPEP and
2395 generic functions now signals a sensible error.
2396 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2397 (reported by Kristoffer Kvello)
2398 * bug fix: backtrace construction is now more careful when making
2399 lisp-objects from pointers on the stack, to avoid creating bogus
2400 objects that can be seen by the GC.
2401 * bug fix: defaulting of values in contexts expecting more than 7
2402 variables now works on x86-64. (reported by Christopher Laux)
2403 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2405 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2406 as the property-list of a symbol.
2407 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2408 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2409 situations requested, are once again file-compileable. (reported
2412 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2413 * MOP improvement: support for user-defined subclasses of
2414 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2415 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2416 the expansion of DEFMETHOD, is responsible for generating a form
2417 which creates a list of specializers when evaluated. Additional
2418 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2419 debugging and introspective support.
2420 * minor incompatible change: the (unsupported) spinlock interface
2421 has changed: free spinlock now has the value NIL, and a held spinlock
2422 has the owning thread as its value.
2423 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2424 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2426 * enhancement: name of a socket-stream is now "a socket" instead of
2427 "a constant string".
2428 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2429 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2430 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2431 for generic functions. (Thanks to Tobias C. Rittweiler)
2432 * optimization: bignum printing speed has been improved by 20-40%
2433 (depending on the bignum size.)
2434 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2436 * bug fix: the cache used by the CLOS to store precomputed effective
2437 methods, slot offsets, and constant return values is now thread and
2439 * bug fix: generic function dispatch function updating is now thread
2440 and interrupt safe (in the sense that the known issues have been
2442 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2443 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2444 * bug fix: asdf systems with dependencies to the SB-POSIX or
2445 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2446 * bug fix: interrupt safety of applicable method computation has been
2449 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2450 * new contrib: sb-cover, an experimental code coverage tool, is included
2451 as a contrib module.
2452 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2453 significantly faster.
2454 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2455 produce more efficient code on x86-64 if the compiler can determine
2456 that (+ INDEX <constant>) does not require a bounds check and FOO
2457 has an element type at least 8 bits wide.
2458 * enhancement: a new, experimental synchronous timeout facility is
2459 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2460 * enhancement: when a symbol name conflict error arises, the
2461 conflicting symbols are always printed with a package prefix.
2462 (thanks to Kevin Reid)
2463 * enhancement: stepping is now once again supported on the SPARC and
2464 MIPS platforms. (It is also now more likely to work on CheneyGC
2466 * enhancement: sb-sprof can now also track and report accurate call
2468 * bug fixes: the treatment of non-standard subclasses of
2469 SB-MOP:SPECIALIZER is more correct.
2470 * incompatible change: PURIFY no longer copies the data from the
2471 dynamic space into the static and read-only spaces on platforms
2472 that use the generational garbage collector
2473 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2475 * bug fix: GC race condition occasionally resulting in crashes with
2476 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2478 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2480 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2481 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2482 * bug fix: an asynchronous interrupt could previously leave the
2483 system running with GC inhibited.
2484 * bug fix: a DECLARE form evaluated at top-level now causes an error
2485 rather than silently (or verbosely) returning NIL.
2486 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2487 result in a error being signalled due to source form lookup errors.
2488 (reported by Peter Graves)
2490 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2491 * incompatible change: removed writer methods for host-ent-name,
2492 host-ent-addresses -- changing the values did not update the DNS
2494 * minor incompatible change: changed experimental JOIN-THREAD interface
2495 * documentation: the manual now lists reader and writer methods
2496 in class slot documentation sections. (thanks to Richard M Kreuter)
2497 * documentation: unwinding from asyncronous events has been
2498 documented as unsafe.
2499 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2500 in multithreaded application code.
2501 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2502 platforms. (thanks to James Anderson for the optimization hint)
2503 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2505 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2506 variants no longer cons.
2507 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2508 their NOT- variants no longer cons.
2509 * optimization: EQUAL hash tables no longer use SXHASH for objects
2510 of all data types, but instead use an EQL hash for types for which
2511 EQUAL is the same as EQL.
2512 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2513 are significantly faster.
2514 * optimization: new STRING-OUTPUT-STREAM implementation is much
2515 faster for large outputs and conses 30% less on average.
2516 * enhancement: XREF information is now collected for references made
2517 to global variables using SYMBOL-VALUE and a constant argument.
2518 * enhancement: SIGINT now causes a specific condition
2519 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2520 * bug fix: FILE-POSITION used to signal an error in some cases where
2521 ANSI requires it to return NIL.
2522 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2523 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2524 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2526 * bug fix: bad type declaration in the CLOS implementation has
2527 been fixed. (reported by James Anderson)
2528 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2529 (thanks to Lutz Euler)
2530 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2531 required by the CLHS. (reported by Samium Gromoff)
2532 * bug fix: dead unbound variable references now signal an error.
2533 (reported by Marco Monteiro)
2534 * bug fix: / with an unused value was being deleted in safe code.
2535 (thanks to Marco Monteiro and Kevin Reid)
2536 * bug fix: number of characters that can be written onto a single
2537 line in a file is unlimited.
2538 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2539 been fixed by inhibiting interrupts for when GC is disabled.
2540 * bug fix: some interrupt safety issues with GETHASH, (SETF
2541 GETHASH), CLRHASH and REMHASH have been fixed.
2542 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2543 specifier no longer causes infinite recursion.
2544 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2545 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2546 * bug fix: an &environment argument with the correct variable information
2547 is passed to macros that are expanded during byte compilation.
2548 (reported by Samium Gromoff)
2549 * bug fix: a logic error was causing the hash function for bignums to
2550 have excessive amounts of collisions. (reported by Faré Rideau)
2551 * bug fix: modifying the contents of an array could change the return
2552 value of SXHASH on that array, which is only allowed for strings
2553 and bit vectors. (bug introduced in 0.9.16)
2554 * improvement: the x86-64/darwin port now passes all tests (except
2555 for the debugger tests) but should still be considered
2556 experimental until this is fixed.
2557 * improvement: a style-warning is signaled for CASE (etc) clauses with
2558 duplicate keys. (thanks to Kevin Reid)
2559 * improvement: macos/x86 and macos/x86-64 now use mach exception
2560 handlers for dealing with illegal instructions (for trapping and
2561 error handling) and memory protection violations (for GC).
2563 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2564 * new platform: experimental support for x86-64/darwin (MacOS).
2565 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2566 and getnameinfo sockets functions are used instead of gethostbyaddr
2567 and gethostbyname, on platforms where the newer functions are available.
2568 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2570 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2571 don't print the startup banner, but behave as if --noinform was passed
2572 as a command line argument. (thanks to Kevin Reid)
2573 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2574 * optimization: code using alien values with undeclared types is much faster.
2575 * optimization: the compiler is now able to open code SEARCH in more cases.
2576 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2577 * bug fix: using standardized COMMON-LISP special variables as loop
2578 variables no longer signals bogus package lock violations. (reported
2580 * bug fix: declaring local loop variables to be of a range-limited type
2581 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2582 (reported by Andras Simon)
2583 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2584 bugs remain on x86-64.)
2585 * bug fix: the #= and ## reader macros now interact reasonably with
2586 funcallable instances.
2587 * bug fix: type-checks for function arguments were compiled using the
2588 compiler policy settings of the wrong lexical environment (in 1.0.2
2590 * bug fix: SHADOW accepts characters as string designators, as required
2591 by the spec (thanks to Eric Marsden)
2592 * bug fix: fixed GC safety issues when foreign functions are called with
2593 non-base strings as arguments
2594 * bug fix: more consistent error output for fatal-compiler-warnings, like
2596 * bug fix: functions with proper names were showing up as NIL in
2597 backtraces (reported by Edi Weitz, regression in 1.0.2)
2599 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2600 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2601 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2602 produce more efficient code on the x86 if the compiler can determine
2603 that (+ INDEX <constant>) does not require a bounds check and FOO
2604 has an element type at least 8 bits wide.
2605 * bug fix: references to undefined variables are handled the same way
2606 in toplevel forms as in the normal compiler
2607 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2609 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2610 (thanks to Jon Buller)
2611 * improvement: faster compilation times for complex functions
2612 * improvement: added readlink support to SB-POSIX (thanks to Richard
2615 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2616 * improvement: experimental support for mach exception handling on
2617 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2619 * improvement: support for GBK external format.
2620 (thanks to Chun Tian (binghe))
2621 * improvement: the debugger now displays variables that have been closed
2622 over, in code compiled with (DEBUG 2) or higher
2623 * improvement: support for executable cores on NetBSD (thanks to
2625 * new feature: added a RESTART-FRAME debugger command
2626 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2627 be used to provide an implementation for FILE-POSITION on Gray streams
2628 (thanks to Eric Marsden)
2629 * new feature: add syslog, openlog and closelog support to SB-POSIX
2630 (thanks to Richard Kreuter)
2631 * optimization: the function call overhead in code compiled with
2632 a high DEBUG optimization setting is significantly
2633 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2634 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2635 (thanks to Tony Martinez)
2636 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2637 evaluated once (reported by Kevin Reid)
2638 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2639 works again (thanks to Kilian Sprotte)
2640 * bug fix: an error is signaled for tagbodies with duplicate tags
2641 (thanks to Stephen Wilson)
2642 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2643 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2644 stack frames from alien callbacks.
2645 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2646 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2647 65k pages (thanks to David Woodhouse)
2648 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2650 changes in sbcl-1.0.1 relative to sbcl-1.0:
2651 * new platform: FreeBSD/x86-64, including support for threading.
2652 * new feature: the compiler stores cross-referencing information
2653 about function calls (who-calls), macroexpansion (who-macroexpands)
2654 and special variables (who-binds, who-sets, who-references) for code
2655 compiled with (< SPACE 3). This information is available through the
2656 sb-introspect contrib.
2657 * new feature: users may subclass SEQUENCE, and have instances of
2658 these classes interoperate with standard Common Lisp functions if
2659 a number of methods are defined. (This feature is experimental
2660 and the interface subject to change based on feedback from SBCL
2661 users and the general community)
2662 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2663 x86/x86-64, rather than the previous fixed depth of 8
2664 * improvement: another pthread back-end of mutex "pthread-futex".
2665 * bug fix: non-ascii command-line arguments are processed correctly
2666 (thanks to Yaroslav Kavenchuk)
2667 * bug fix: non-required arguments were not passed correctly when a method
2668 defined using DEFMETHOD was called from a mop-generated method using
2669 CALL-NEXT-METHOD (reported by Pascal Costanza)
2670 * bug fix: recursion is now permitted in accessors through
2671 SLOT-UNBOUND. (reported by Pascal Costanza)
2672 * bug fix: an error was signaled at startup if the HOME environment
2673 variable was defined, but had an empty value (reported by Peter Van Eynde)
2674 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2675 signal a PROGRAM-ERROR, not a BUG.
2676 * bug fix: SB-POSIX:READDIR works when built with large file support.
2677 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2679 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2680 for better automatic indentation support. (thanks to Matt Pillsbury)
2681 * optimization: loading generic functions no longer takes O(n^2) time,
2682 proportional to the amount of methods in the generic function
2683 (reported by Todd Sabin and Jeremy Brown)
2684 * optimization: the FIND and POSITION family of sequence functions
2685 are significantly faster on arrays whose element types have been
2687 * improvements to the Windows port:
2688 ** Intermittent heap corruption problems have been fixed. (thanks
2689 to Alastair Bridgewater)
2690 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2692 ** Lisp is able to unwind foreign exception frames from alien
2693 callbacks. (thanks to Alastair Bridgewater)
2695 changes in sbcl-1.0 relative to sbcl-0.9.18:
2696 * improvement: experimental support for threading on FreeBSD/x86.
2697 (thanks to NIIMI Satoshi)
2698 * improvement: runtime option --dynamic-space-size can be used
2699 to set the size of the dynamic space reserved on startup.
2700 * improvement: floating point modes in effect are now saved in
2701 core, and restored on startup.
2702 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2703 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2704 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2705 threads are not running after *SAVE-HOOKS* have run.
2706 * improvement: writes to CLOS instance slots are type-checked in code
2707 compiled with (SAFETY 3)
2708 * improvement: floating-point exception handling on FreeBSD (thanks to
2710 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2711 (thanks to Zach Beane)
2712 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2714 * improvement: added support for the Shift-JIS external format.
2715 (contributed by NIIMI Satoshi)
2716 * improvement: callbacks are supported on Linux/PPC. (thanks to
2718 * bug fix: compiler bug triggered by a (non-standard) VALUES
2719 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2720 * bug fix: file compiler no longer confuses validated and already
2721 dumped structurres. (reported by Kaersten Poeck)
2722 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2723 fill-pointer signals a type-error as required. (thanks to
2725 * bug fix: disassemly of funcallable instances works.
2726 * bug fix: single stepping on PPC.
2727 * bug fix: fix thread-safety problems in the type system (generally
2728 manifesting as nonsensical errors like "STRING is a bad type specifier
2729 for sequences" or "The value 1 is not of type FIXNUM")
2730 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2731 (reported by Josip Gracin)
2732 * bug fix: an error is signaled for attempts to displace arrays with
2733 incompatible element types (thanks to Mario Mommer)
2734 * bug fix: more correct handling of wide characters in debug info
2735 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2736 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2737 and don't cause extra consing
2738 * optimization: MAP and MAP-INTO are significantly faster on vectors
2739 whose elements types have been declared.
2740 * Improvements to SB-SPROF:
2741 ** Support for allocation profiling
2742 ** Reduced profiling overhead, especially for long profiling runs
2743 * Improvements to the Windows port:
2744 ** floating point exceptions are now reported correctly.
2745 ** stack exhaustion detection works partially.
2746 ** more accurate GET-INTERNAL-REAL-TIME.
2747 ** better RUN-PROGRAM behaviour in case of errors in the child
2749 ** PROBE-FILE now simplifies pathnames correctly.
2750 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2751 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2752 1st 1970 (although time timezone data will be unreliable).
2753 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2755 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2756 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2757 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2759 * bug fix: two potential GC deadlocks affecting threaded builds.
2760 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2761 returns T (reported by Anton Kazennikov)
2762 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2763 with non-variable places
2764 * bug fix: remove a race condition in the setting of
2765 funcallable-instance functions, this should make threaded CLOS
2766 code more stable against memory faults.
2767 * bug fix: corruption of specials when unbinding is interrupted by an
2768 asynchronous unwind (reported by Hannu Koivisto)
2769 * improvement: the debugger will now also display local variables that
2770 are only used once, for code compiled with a DEBUG optimization quality
2773 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2774 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2775 * incompatible change: External-format support for FFI calls. The
2776 SB-ALIEN:C-STRING no longer implies an ASCII
2777 external-format. Instead the string is subject to external-format
2778 conversion. Additionally return values of type SB-ALIEN:C-STRING
2779 are by default of type (SIMPLE-ARRAY CHARACTER), not
2780 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2781 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2782 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2783 * incompatible change: SB-EXT package no longer contains the
2784 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2785 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2787 * incompatible change: the single-stepper is no longer available
2788 on Alpha, Mips and Sparc platforms.
2789 * minor incompatible change: the direct superclasses of
2790 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2791 not (STANDARD-OBJECT FUNCTION). This makes the
2792 class-precedence-lists of GENERIC-FUNCTION and
2793 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2795 * minor incompatible change: the default stream external format on
2796 non-unicode SBCL is no longer detected from the locale, but is always
2798 * new feature: Add a version of evaluator that uses an interpreter instead
2799 of the compiler. EVAL still uses the compiler by default, to switch it
2800 to use the interpreter, set the value of the variable
2801 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2802 * minor incompatible change: the single-stepper REPL has been merged
2803 with the normal debugger (see the "Stepping" heading of the debugger help
2804 for more details). The debugger command STEP will no longer switch
2805 to the single-stepper REPL.
2806 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2807 for a type now works.
2808 * bug fix: loading of default sysinit file works. (thanks to Leonid
2810 * bug fix: better detection of circularities in the file-compiler.
2811 (reported by Marco Monteiro)
2812 * bug fix: the CL pathname functions now work with files that have
2813 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2814 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2815 systems with Unix98 pty semantics.
2816 * bug fix: ASDF-INSTALL will now work with bsd tar.
2817 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2819 * bug fix: timers expiring in dead threads no longer cause a
2820 type-error (reported by Paul "Nonny Mouse").
2821 * bug fix: thanks to more lightweight single-stepper instrumentation,
2822 code compiled with (DEBUG 3) will compile and execute significantly faster,
2823 and will have more accurate type-inferencing than before
2824 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2825 whose bindings are modified
2826 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2827 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2828 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2829 CL:SOFTWARE-VERSION with proper version
2831 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2832 * feature: implemented the READER-METHOD-CLASS and
2833 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2834 as specified by AMOP.
2835 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2837 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2838 (thanks to Lutz Euler)
2839 * optimization: hashing of general arrays and vectors has been
2840 improved. (reported by Any Fingerhut)
2841 * enhancement: SB-INTROSPECT is now able to find definitions of
2842 profiled functions. (thanks to Troels Henriksen)
2843 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2844 as well, allowing compiler-macros for SETF-functions to expand.
2845 * enhancement: step-instrumentation no longer wraps known
2846 single-value functions with multiple-value context, allowing
2847 better type inference.
2848 * fixed bug #337: use of MAKE-METHOD in method combination now works
2849 even in the presence of user-defined method classes. (reported by
2850 Bruno Haible and Pascal Costanza)
2851 * fixed bug #339(c): if there are applicable methods not part of any
2852 long-form method-combination group, call INVALID-METHOD-ERROR.
2853 (reported by Bruno Haible)
2854 * fixed bug #361: the :FUNCTION initarg in the protocol for
2855 initialization of methods can now be used to override
2856 internally-produced optimized functions. (reported by Bruno
2858 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2859 system-provided lambda expression no longer cause warnings about
2860 unbound #:|pv-table| symbols.
2861 * bug fix: improved the handling of type declarations and the
2862 detection of violations for keyword arguments with non-constant
2864 * bug fix: potentially erronous calls to PATHNAME and
2865 MERGE-PATHNAMES were being flushed in some cases.
2866 (reported by Richard Kreuter)
2867 * bug fix: compiled calls to TYPEP were mishandling obsolete
2868 instances. (reported by James Bielman and Attila Lendvai)
2869 * bug fix: format strings with ~> without matching ~< no longer
2870 trigger an AVER, but signal an understandable error instead.
2871 (reported by Antonio Martinez)
2872 * bug fix: specifying an output-file without a pathname-type for
2873 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2874 of input-file instead of "fasl". (reported by Robert Dodier)
2875 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2876 (reported by James Y Knight).
2877 * bug fix: compiler-macros-function did not consider the environment
2878 argument for shadowing by local functions.
2879 * bug fix: compiler-macros expansion was inhibited by local INLINE
2881 * bug fix: inline expansions of known functions were subject to
2882 step-instrumentation in high debug policies, leading to problems
2883 with type-inference.
2884 * bug fix: compiler failed to differentiate between different CONS
2885 types in some cases.
2886 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2887 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2888 * bug fix: #368: incorrect use of expressed vs. upgraded array
2890 * bug fix: #306a: more precise unions of array types.
2891 * thread-safety improvements:
2892 ** CONDITION-WAIT could return early on Linux, if the thread was
2893 interrupted and subsequently continued with SIGCONT.
2894 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2896 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2897 * added support for the ucs-2 external format. (contributed by Ivan
2899 * minor incompatible change: pretty printing of objects of type
2900 (cons symbol) is, in the default pprint-dispatch-table, now
2901 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2903 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2904 called later in a class's lifetime, possibly as late as when the
2905 first instance of the class is created. Previously,
2906 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2907 class became finalizeable.
2908 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2909 for multibyte external-format streams. (thanks to "vbzoli")
2910 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2911 with :ALLOCATION :CLASS inherited from superclasses of the
2913 * fixed bug: anonymous classes can now be created using the :NAME
2914 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2915 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2916 * fixed bug: core-files saved with :EXECUTABLE T can again be
2917 executed when SBCL_HOME isn't set. (reported by James Knight)
2918 * fixed bug: toplevel LOCALLY forms with declarations could
2919 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2920 * fixed bug: printing from several different threads using different
2921 values of *print-case* could cause invalid output, due to
2922 some internal special variables of the printer not being bound
2923 thread-locally (reported by Max Mikhanosha)
2924 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2925 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2926 (reported by Pascal Costanza)
2927 * fixed bug: FINALIZE-INHERITANCE is called from
2928 REINITIALIZE-INSTANCE on classes when the class has previously
2929 been finalized, as required by AMOP.
2930 * minor code generation optimizations:
2931 ** better register allocation in CLOS dispatching functions
2932 ** overflow detection when coercing signed bytes to fixnums on x86-64
2933 ** is now implemented with one IMUL instruction instead of three shifts
2934 ** more efficient bit-vector access on x86 and x86-64
2935 ** more efficient access to raw structure slots on x86 and x86-64
2936 * fixed some bugs revealed by Paul Dietz' test suite:
2937 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2938 return its argument.
2940 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2941 * feature: thread support on Solaris/x86, and experimental thread support
2943 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2945 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2946 default method for SLOT-UNBOUND.
2947 * minor incompatible change: prevent the user from specializing the
2948 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2949 somewhat counter to the intent of the protocol, I (CSR) think, and
2950 additionally it just doesn't work in SBCL as currently
2951 implemented, thanks to optimizations (that are always valid for
2952 the other three SLOT-VALUEish functions, but not for the setter).
2953 * minor incompatible change: the :SB-LDB feature is now enabled by
2954 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2955 the low-level debugger.
2956 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2957 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2958 down to an SB-SYS:FD-STREAM, allowing direct communication in
2959 more cases. Temporary files and pipes are still used as a fallback
2961 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2962 on the non-reentrant C functions localtime(3) and gmtime(3).
2963 * bug fix: global optimization policy was not visible in LOCALLY and
2965 * bug fix: class objects can be used as specializers in methods.
2966 (reported by Pascal Costanza)
2967 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2968 with a type error. (reported by blitz_ on #lisp)
2969 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2970 failed with a type error. (reported by Pascal Bourguignon)
2971 * bug fix: merging pathnames against defaults with :DIRECTORY
2972 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2973 (reported by James Y Knight)
2974 * bug fix: saving large (>2GB) cores on x86-64 now works
2975 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2976 constant index and a (simple-array (signed-byte 32)) array
2977 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2978 error (patch by Robert J. Macomber)
2979 * feature: TIME now displays the amount of run-time spent in GC
2980 * bug fix: The debugger now does a better job of respecting
2981 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2982 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2983 workaround for bug 403.)
2984 * bug fix: floating point exception handling now works on FreeBSD
2985 (thanks to NIIMI Satoshi)
2986 * fixed some bugs revealed by Paul Dietz' test suite:
2987 ** MISC.641: LET-conversion were not supposed to work in late
2989 * improvements to the Win32/x86 port:
2990 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2991 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2993 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2994 * new feature: source path information is generated for macro-expansion
2995 errors for use in IDE's like Slime (thanks to Helmut Eller)
2996 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2997 * bug fix: compiler does not loop forever on an invalid type in
2999 * improvement: compilation of most CLOS applications is significantly
3001 * optimization: added a limited bytecode compiler for simple toplevel
3002 forms, speeding up compilation and FASL loading
3003 * bug fix: the statistical profiler now properly distinguishes anonymous
3006 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3007 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3008 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3009 into subclasses of the finalized class. Now user calls to
3010 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3011 system return before any subclasses are finalized.
3012 * minor incompatible change: The reader no longer ignores errors
3013 regarding non-existent packages in #+ and #- feature tests.
3014 * new feature: command line options --no-sysinit, --no-userinit to
3015 inhibit loading the corresponding init files
3016 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3017 for sending data through UDP sockets (thanks to François-René Rideau)
3018 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3019 error is signalled instead (thanks to François-René Rideau)
3020 * minor incompatible change: Error signalling behaviour of lexical
3021 operations violating package locks has changed slightly. Refer to
3022 documentation on package locks for details.
3023 * enhancement: EVAL can process IF-expressions without resorting to the
3025 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3026 constant-folded properly due to missing out-of-line functions.
3027 (reported by Mika Pihlajamäki)
3028 * bug fix: LISTEN sometimes returned T even in cases where no data was
3029 immediately available from the stream
3030 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3031 were reversed. (reported by Levente Mészáros)
3032 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3033 when given a vector displaced to an adjustable array. (reported
3035 * bug fix: derivation of float boundaries from numbers outside the
3036 appropriate float range (reported by John Wiseman)
3037 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3039 * bug fix: precomputing cache entries for generic functions with
3040 some subclasses of specializers as yet invalid does not attempt to
3041 fill a cache line with a negative offset. (reported by Levente
3043 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3044 allow condition class objects as arguments to DOCUMENTATION and
3045 (SETF DOCUMENTATION); only find and set documentation for
3046 structure names for the STRUCTURE doc-type. (suggested by Gary
3048 * improvements to the Win32/x86 port:
3049 ** (user-homedir-pathname) and default initialization file
3050 locations now know about the user's "Documents and Settings"
3051 directory (thanks to Yaroslav Kavenchuk)
3052 ** run-program is implemented (thanks to Mike Thomas)
3053 ** sockets support (thanks to Timothy Ritchey)
3054 ** better backtrace support (thanks to Alastair Bridgewater)
3055 ** sb-grovel supported
3056 ** asdf-install and sb-posix work somewhat
3057 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3058 * improvements to the Solaris/x86 port:
3059 ** works on Solaris 11/Solaris Express
3060 ** floating-point exception handling support
3061 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3062 * fixed some bugs revealed by Paul Dietz' test suite:
3063 ** REMOVE-METHOD returns its generic function argument even when
3064 the method is not one of the generic functions' methods.
3065 ** objects declared as MEMBER types can be admissible arguments to
3066 structure accessors.
3067 ** printing characters should simply be printed by the FORMAT ~:C
3069 ** compiler failure when compiling functions with hairy constant
3070 defaults for optional parameters.
3071 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3072 function, which is already optimized.
3074 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3075 * new platform: experimental support for SBCL x86/Darwin, including
3076 MacOS X 10.4.5 on Intel.
3077 * new feature: Unicode character names are now known to the system
3078 (through CHAR-NAME and NAME-CHAR).
3079 * new feature: the filesystem location of SBCL's core file is
3080 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3081 * minor incompatible change: the contrib modules SB-POSIX and
3082 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3083 this change is to make it easier to distribute
3084 location-independent binaries.
3085 * bug fix: as implied by AMOP, standardized classes no longer have
3086 slots named by external symbols of public packages. (reported by
3088 * optimization: calling functions via constant symbols -- as in
3089 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3090 via the function object as in (FUNCALL #'FOO).
3091 * optimization: on x86 and x86-64, the calling convention for the
3092 case of dealing with an unknown number of values has been altered
3093 to be friendlier to the prediction heuristics implemented,
3094 particularly with reference to CALL and RET pairing. (thanks to
3095 Alastair Bridgewater)
3096 * optimization: on x86, the code for access to thread-local symbol
3097 values and binding/unbinding of thread-local symbols is smaller.
3098 (thanks to Alastair Bridgewater)
3099 * enhancement: CONSTANTP is now able to determine constantness of
3100 more complex forms, including calls to constant-foldable standardized
3101 functions and some special forms beyond QUOTE.
3102 * fixed bug: occasional GC crashes on Solaris/x86
3103 * optimization: x86-64 supports stack allocation of results of simple
3104 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3105 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3106 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3107 (thanks to James Knight)
3108 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3109 by the standard (thanks to Stephen Compall)
3111 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3112 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3113 be used for bundling the runtime and the core file into one
3114 executable binary. This feature is not currently supported on all SBCL
3115 platforms. (thanks to James Bielman and NIIMI Satoshi)
3116 * new feature: a generational or ephemeral garbage collector is now
3117 the default on the PowerPC platform (both Linux and Darwin). The
3118 old Cheney (stop and copy) collector is a build-time option.
3119 (thanks to Cyrus Harmon, after Raymond Toy)
3120 * minor incompatible change: the method by which SBCL finds its
3121 contributed modules has changed; it no longer relies on symbolic
3122 links from an $SBCL_HOME/systems directory, but searches directly
3123 in the subdirectories of $SBCL_HOME.
3124 * enhancement: the dynamic heap size on the Linux/PPC platform is
3125 markedly larger, even using the older Cheney garbage collector.
3126 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3127 certain complicated string types. (reported by Gary King)
3128 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3129 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3130 * fixed bug: DOCUMENTATION on structures no longer signals an
3131 error if no structure type of the right name exists. (reported by
3133 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3134 applicable non-standard primary or :AROUND method on
3135 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3136 no longer cause unbound variable errors. (reported by Kevin Reid)
3137 * fixed bug: metacircle resolution in cases where methods have slots
3138 added before the slots from STANDARD-METHOD. (reported by Jean
3140 * fixed bug: the Power PC assembly code for calling into lisp
3141 sometimes computed its return address wrongly (depending on the
3142 15th bit of the address, fixed at link time). This used to
3143 manifest itself in a segmentation violation while building PCL.
3144 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3145 many others over the years)
3146 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3147 the stack pointer (treated as a signed integer) is negative.
3148 (thanks to Peter van Eynde)
3150 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3151 * new platform: experimental support for the Windows operating
3152 system has been added. (thanks to Alastair Bridgewater)
3153 * fixed several bugs in and robustified the PPC FFI (including
3154 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
3155 * bug fix: allow non-simple string symbol names (reported by Paul
3157 * bug fix: interrupt handling on NetBSD (thanks to Richard M
3159 * bug fix: saving a core corrupted callbacks on x86/x86-64
3160 * bug fix: closed a loophole in metacircularity detection and
3161 grounding in the PCL implementation of CLOS.
3162 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
3163 (reported by tomppa on #lisp)
3164 * bug fix: clear the direction flag on Lisp -> C transitions, as
3165 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3166 (reported by Andrej Grozin and Hendrik Maryns)
3167 * optimization: major improvements to GC efficiency on GENCGC platforms
3168 * optimization: faster implementation of EQUAL
3169 * optimization: emit more efficient opcodes for some common
3170 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3171 * optimization: several other minor code-generation improvements on x86-64
3172 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3174 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3175 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3176 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3177 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3178 by ANSI as a generic function, and for consistency (SETF
3179 GENERIC-FUNCTION-NAME) is treated likewise.
3180 * fixed bug #233.b: make constraint propagation notice when a variable
3181 value is changed after it is referenced but before it is used
3182 * fixed bug #296: no more arbitrary behaviour from filenames with
3183 odd characters as --load arguments. (reported by Adam Warner)
3184 * fixed bug #390: :CHARACTER-SET pathname components now work as
3185 expected. (reported by Tim Daly Jr)
3186 * fixed bug #391: complicated :TYPE intersections in slot
3187 definitions no longer cause an error in PCL internals.
3188 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3189 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3190 returning the number of octets which would be written to the
3191 file-stream. (thanks to Robert J. Macomber)
3192 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3193 arguments to the internal stream functions. (thanks to David
3195 * bug fix: stack exhaustion is now handled on the x86/SunOS
3196 platform. (thanks to Daisuke Homma)
3197 * bug fix: more accurate ROOM results on GENCGC platforms
3198 * optimization: improved type inference for arithmetic-for
3199 index variables in LOOP
3200 * optimization: faster floating-point SQRT on x86-64
3201 * fixed some bugs revealed by Paul Dietz' test suite:
3202 ** DOCUMENTATION returns NIL instead of "" for method combinations
3203 that don't have a docstring
3205 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3206 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3207 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3208 therefore are not customizeable by user code (as seems to be at
3209 least permitted and maybe required by AMOP). As a consolation,
3210 however, the SBCL implementation of these functions now calls
3211 REINITIALIZE-INSTANCE as specified by AMOP.
3212 * bug fix: slot-definition documentation is propagated as per ANSI
3213 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3214 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3215 argument, as do eslotd initialization methods. (from Pascal
3216 Costanza's "Closer" project)
3217 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3218 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3220 * bug fix: it is now possible to have more than one subclass of
3221 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3222 (reported by Bruno Haible, Pascal Costanza and others)
3223 * bug fix: the dependent update protocol now works for generic
3224 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3225 and Pascal Costanza)
3226 * bug fix: condition-class instances corresponding to
3227 DEFINE-CONDITION forms are now created eagerly. (reported by
3228 Kalle Olavi Niemitalo on comp.lang.lisp)
3229 * bug fix: floating point printing is more accurate in some
3230 circumstances. (thanks to Simon Alexander)
3231 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3232 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3233 * bug fix: callbacks on OS X now preserve stack-alignment.
3234 (thanks to Cyrus Harmon)
3235 * enhancement: the x86-64 disassembler is much better at
3236 disassembling SSE instructions. (thanks to Lutz Euler)
3237 * enhancement: CHECK-TYPE on a variable now allows type-inference
3238 (thanks to Vincent Arkesteijn)
3239 * optimization: improved performance of EUC-JP external format.
3240 (thanks to NIIMI Satoshi)
3241 * optimization: performance improvements to IO on file streams of
3242 :ELEMENT-TYPE CHARACTER
3243 * optimization: much faster memory allocation on x86-64
3244 * optimization: faster garbage collections (latency and throughput)
3246 * optimization: faster bignum subtraction and division on x86 and x86-64
3247 (thanks to Lutz Euler)
3248 * optimization: more accurate type-inference for loops that use a
3249 floating point index variable or a negative step.
3251 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3252 * bug fix: add a workaround to SBCL looping infinitely at startup on
3253 Linux kernels with apparently buggy implementations of personality().
3254 (thanks to Svein Ove Aas)
3255 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3256 (thanks to David Lichteblau)
3257 * bug fix: local bindings shadow global symbol macros for
3258 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3259 * optimization: non-open coded uses of numeric comparison operators
3260 (e.g. >) no longer cons when called with more than one parameter
3261 on platforms supporting dynamic-extent allocation.
3262 * enhancement: saving cores with foreign code loaded is now supported
3263 on MIPS/Linux in addition to the previously supported platforms.
3264 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3265 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3266 * bug fix: division by zero in sb-sprof when no samples were collected
3267 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3268 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3269 (thanks to Alexander Kjeldaas)
3270 * new feature: ignoring the return values of destructive functions
3271 like NREVERSE signals a compile-time style-warning.
3272 (thanks to Kevin Reid)
3273 * new feature: the alignment of alien structure fields can be
3274 explicitly specified. (thanks to Cyrus Harmon)
3275 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3276 and dump core on SIGQUIT
3278 ** incompatible change: threads do not inherit values of specials
3279 from their parents (see manual)
3280 ** bug fix: threads stacks belonging to dead threads are freed by the
3281 next exiting thread, no need to gc to collect thread stacks anymore
3282 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3283 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3284 ** bug fix: dynamic variable and thread start related gc lossage
3285 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3287 * fixed some bugs revealed by Paul Dietz' test suite:
3288 ** SUBTYPEP is slightly more accurate on heinously complicated
3289 CONS types where some of the members have uncertain (in the
3290 NIL, NIL sense) type relationships to each other.
3292 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3293 no longer purified unless :PURIFY T is explicitly specified.
3294 ** Non-purified cores are significantly smaller than before
3296 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3297 * new feature: timers based on Zach Beane's excellent timer package
3298 * added support for the following external formats: koi8-u,
3299 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3300 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3301 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3302 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3303 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3304 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3305 * incompatible change: a threaded SBCL will no longer revert to
3306 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3307 * bug fix: interrupts are disabled until startup is complete; no
3308 more sigsegvs when receiving a signal to soon
3309 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3311 * bug fix: add a workaround for the memory randomization features in
3312 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3313 workaround will only be in effect on systems with the proc filesystem
3315 * bug fix: printing objects of type HASH-TABLE signals a
3316 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3318 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3319 have been running for over 50 days. (reported by Gilbert Baumann)
3320 * bug fix: the logic for getting names of functions gets less
3321 confused when confronded with alternate-metaclass
3322 funcallable-instances. (reported by Cyrus Harmon)
3323 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3324 consistent, even on internal alternate-metaclass objects.
3325 * bug fix: flush closure information collected by physical
3326 environment analysis prepass before the main pass. (bug reported
3328 * bug fix: compiler pack phase does not modify a hashtable, which is
3329 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3330 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3331 may be expanded. (reported by Alexander <malishev> on c.l.l)
3332 * bug fix: no more style-warnings when compiling code using LAST
3333 under high-SPEED low-SPACE settings. (reported by David Wallin
3335 * fixed some incompatibilities between SBCL's MOP and the MOP
3337 ** the METAOBJECT class is now implemented;
3338 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3339 STANDARD-OBJECT, as required;
3340 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3341 now compatible (as required by VALIDATE-SUPERCLASS); there
3342 remains a consistency requirement over the presence or absence
3343 of the FUNCTION class in the superclass list of finalized
3344 classes; see the manual for more details;
3345 ** the :AROUND method for COMPUTE-SLOTS on
3346 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3347 requested slot ordering.
3349 ** bug fix: parent thread now can be gc'ed even with a live
3351 ** bug fix: binding a special with PROGV to no value is not
3352 the same as that symbol not having been bound (thanks to
3354 ** bug fix: binding specials is thread safe (thanks to
3356 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3357 and SB-SPROF do not die with 'no handler for signal XX in
3358 interrupt_handle_now(..)' anymore
3359 ** bug fix: WITH-TIMEOUT works with multiple running threads
3360 * fixed some bugs revealed by Paul Dietz' test suite:
3361 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3362 the :method-class keyword argument.
3364 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3365 * new port: the Solaris operating system on x86 processors is now
3366 mostly supported, though some rough edges in the environment
3367 remain. (thanks to Daisuke Homma)
3368 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3369 space for its heap. (thanks to Thiemo Seufer)
3370 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3371 closures. (thanks to Thiemo Seufer)
3372 * minor incompatible change: eof selects abort in the debugger.
3373 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3374 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3376 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3377 deprecated, and will go away in a future revision of SBCL.
3378 * minor incompatible change: GC-ON and GC-OFF are no longer
3379 implemented with a counter, it does not matter how many times gc
3380 is switched on or off
3381 * bug fix: discriminating functions for generic function classes
3382 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3383 make invalid assumptions about method precedence order. (reported
3385 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3386 platforms. (thanks to Thiemo Seufer)
3387 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3388 * bug fix: correct pathname printing with printer escaping is on.
3389 (thanks to Kevin Reid)
3390 * bug fix: complex VOP definitions in "user-space" no longer trigger
3391 package locks. (reported by Zach Beane)
3392 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3393 for funcallable-instance functions, and is no different from
3395 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3396 characters in the current readtable. (reported by Nicholas Neuss)
3397 * bug fix: SUBTYPEP on various CONS types returns more a more
3398 accurate acknowledgment of its certainty.
3399 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3400 lists in some cases. This partially fixes bug 384.
3401 * flush all standard streams before prompting in the REPL and the
3403 * bug fix: signal handling and triggering gc do not conflict
3404 directly anymore, in particular a high frequency sb-sprof does
3405 not prevent gc from running
3406 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3407 approximation for timezone and DST information between the
3408 universal time epoch and the smallest negative 32-bit time_t.
3409 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3410 year 1899 so long as the encoded time is non-negative.
3411 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3412 the correct answer for non-constant rotate amounts when performing
3413 an inline 32-bit rotation.
3415 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3416 there is only one thread in the session
3417 ** bug fix: memory leak for streams created in one thread and
3418 written to in another
3419 ** bug fix: lockup when compiled with gcc4
3420 ** bug fix: race that allows the gc to be triggered when gc is
3422 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3423 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3425 ** bug fix: finished threads are gc'ed properly
3426 * fixed some bugs revealed by Paul Dietz' test suite:
3427 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3428 has arguments with a different set of applicable methods from
3429 the orignal arguments.
3430 ** The type error thrown by MAP now has a correct expected-type
3432 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3433 name a compiled function.
3434 ** Three MISC tests where a large bignum was improperly coerced to
3435 a float that couldn't represent that bignum during type
3436 derivation were fixed.
3437 ** SUBTYPEP can now handle types involving the negation of a
3438 list-form FUNCTION type.
3439 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3440 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3441 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3443 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3444 * New feature: Experimental support for bivalent streams: streams
3445 opened with :element-type :default now allow character and binary
3446 (unsigned-byte 8) I/O
3447 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3448 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3450 * bug fix: no more highly sporadic "couldn't check whether ~S is
3451 readable" when reading a stream and an interrupt hits in the middle
3452 of a select system call
3453 * compiler better recognizes complex arrays (reported by Eduardo
3455 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3456 for variables on SBCL built with linkage-tables. (reported by Luis
3458 * various error reporting improvements.
3459 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3460 (Thanks to Thiemo Seufer)
3461 * bug fix: nested reader invokations work correctly
3462 * bug fix: it is possible to have simultaneous references to foreign
3463 code and foreign data with the same name.
3465 ** added x86-64 support
3466 ** incompatible change: the threading api now works with thread
3467 objects instead of thread ids
3468 ** bug fix: threads are protected from signals and interruption when
3469 starting up or going down
3470 ** bug fix: a race where an exiting thread could lose its stack to gc
3471 ** bug fix: don't halt on infinite error in threads if possible
3472 ** fixed numerous gc deadlocks introduced in the pthread merge
3473 ** bug fix: fixed thread safety issues in read and print
3474 ** bug fix: debugger doesn't hang on session lock if interrupted at
3475 an inappropriate moment
3476 ** bug fix: run-program is now thread safe(r)
3477 ** bug fix: inner with-recursive-lock no longer releases the mutex
3478 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3479 * fixed some bugs revealed by Paul Dietz' test suite:
3480 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3481 EXPECTED-TYPE slots filled.
3482 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3484 ** MAKE-CONDITION accepts classes as type-designators.
3485 ** COMPILE may never return NIL.
3486 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3487 range before calling Unix time functions
3489 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3490 * numerous signal handling fixes to increase stability
3491 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3492 * minor incompatible change: we now correctly canonize default
3493 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3494 as per the MOP, rather than the historical (INITARG INITFUNCTION
3495 INITFORM). (reported by Bruno Haible)
3496 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3497 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3498 for more information.
3499 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3500 pathname is a directory pathname.
3501 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3502 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3504 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3505 :METACLASS argument in addition to a class name. (reported by
3506 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3507 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3508 (reported by Bruno Haible; patch from Gerd Moellmann)
3509 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3511 * bug fix: more cleanups to the floating point exception handling on
3512 x86-64 (thanks to James Knight)
3513 * bug fix: the compiler does not try to constant fold calls of
3514 COERCE and BIT-* functions when they return freshly constructed
3515 objects. (reported by Nikodemus Siivola and Paul Dietz)
3516 * optimization: improved the MIPS versions of generic (in the
3517 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3518 * optimization: direct conversion of (unsigned-byte 32) to floats on
3519 the PowerPC platform.
3520 * optimization: structure instances with raw slots now use less
3521 memory, and probably show better memory locality. (thanks to
3523 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3524 are treated as requests for stack allocation on the x86-64,
3525 Alpha-32, PPC and SPARC platforms.
3526 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3527 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3528 (thanks to Tony Martinez)
3530 ** gcing a dead thread can no longer lead to lockups
3531 ** threads block signals until they are set up properly
3532 ** errno is no longer shared by threads
3533 ** interrupt-thread restores the eflags register on x86
3534 ** fixed some lockups due to gc/thread interaction
3535 * fixed some bugs revealed by Paul Dietz' test suite:
3536 ** invalid dotted lists no longer raise a read error when
3537 *READ-SUPPRESS* is T
3538 ** signal an error if a symbol that names a declaration is used
3539 as the name of a type, or vice versa
3540 ** allow using the (declare (typespec var*)) abbreviation for
3541 (declare (type typespec var*)) with all type specifiers
3542 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3543 ** always return NIL from PPRINT-POP when OBJECT is NIL
3544 ** don't signal errors when pretty-printing malformed LABELS,
3545 FLET or MACROLET forms
3546 ** declarations in a DOLIST body are also in scope for the
3548 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3550 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3553 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3554 * fixed cross-compiler leakages that prevented building a 32-bit
3555 target with a 64-bit host compiler.
3556 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3557 opened with :IF-EXISTS :OVERWRITE.
3558 * fixed bug 281: error for an invalid qualifier in a short-form method
3559 combination method is not signalled until the faulty method is called.
3560 * bug fix: iteration variable type inferrer failed to deal with open
3561 intervals. (reported by Alan Shields)
3562 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3563 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3564 or more runtime options were provided to the sbcl binary.
3565 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3566 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3567 * optimization: there's now a fast-path for fixnum arguments in the
3568 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3569 * optimization: the code generated on x86-64 is more compact thanks
3570 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3571 * bug fix: floating-point exception handling now partly works on
3572 x86-64. (Thanks to James Knight)
3573 * improvement to the MIPS backend from Thiemo Seufer: C-style
3574 64-bit long long arguments and return values to alien functions
3576 * fixed some bugs revealed by Paul Dietz' test suite:
3577 ** the type-error signalled from WARN has a filled-in DATUM slot.
3578 ** the type-error required when a stream is not associated with
3579 a file has the stream as its datum.
3580 ** type-errors on single-floats on x86-64 no longer have
3581 :INVALID-OBJECT as the datum
3582 ** the type-errors signalled for invalid function names now have
3583 a correct expected type
3584 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3585 for structures defined with a :TYPE. Documentation strings for
3586 typed structures are no longer immediately discarded
3587 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3588 broadcast streams and synonym streams. FILE-LENGTH now also works
3589 on broadcast streams.
3591 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3592 * incompatible change: the --noprogrammer option, deprecated since
3593 version 0.7.5, has been removed. Please use the equivalent
3594 --disable-debugger option instead.
3595 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3597 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3598 inoperational for a while now) has been completely removed.
3599 * null lexical environments are now printed as #<NULL-LEXENV>,
3600 significantly reducing the amount of clutter in typical backtraces.
3601 * documentation on weak pointers, finalization, and after GC hooks
3602 has been added to the manual.
3603 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3604 as other specialized array types, is much faster. SUBSEQ and
3605 COPY-SEQ on such arrays have also been sped up.
3606 * optimization: EQL is now more efficient when at least other argument
3607 is known to be of type (OR FIXNUM (NOT NUMBER)).
3608 * fixed bug: the runtime is now less vulnerable to changes in the
3609 size of the SBCL object on OS X, and virtual memory is reserved for
3610 all spaces that need to be at a fixed address.
3611 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3612 * fixed bug: finalizers and after GC hooks that cause consing are now
3614 * fixed bug: compiler error messages and summaries are now printed to
3615 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3616 * fixed inference of the upper bound of an iteration variable.
3617 (reported by Rajat Datta).
3618 * fixed bug 211e: calling local functions with duplicated constant
3619 keyword argument no longer causes a bogus style warning about an
3621 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3622 ftype declaration to be disregarded. (reported by Dave Roberts)
3623 * fixed bug 373: caused by erronous compilation of references to alien
3624 variables in the runtime on ppc/darwin.
3625 * fixed bug 376: CONJUGATE type deriver.
3626 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3627 (reported by Baughn on #lisp)
3628 * a cross-compiler bug on non-x86 platforms has been identified and
3629 fixed. (thanks to Bruno Haible)
3630 * improvements to the MIPS runtime code for increased stability.
3631 (thanks to Thiemo Seufer)
3632 * increased the maximimum compact environment size to allow
3633 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3634 * partial workaround for bug 135: don't name the function we're
3635 calling for hairy cases of EVAL, so as not to accumulate one environment
3636 entry per call to EVAL. (reported by Kevin Reid)
3637 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3638 * optimization: type testing for non-vector arrays should be faster.
3639 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3641 * bug fix: setting 31st element of a bit vector to zero did not work
3643 * bug fix: redefining a class definition which failed due to a
3644 previous accessor / function clash now works (but see BUGS entry
3645 #380 for more problems in this area). (thanks to Zach Beane)
3646 * the long form of DEFINE-METHOD-COMBINATION disables method group
3647 checking when given a single method group with pattern *. (thanks
3649 * on x86 compiler supports stack allocation of results of simple
3650 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3651 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3652 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3653 * fixed some bugs related to Unicode integration:
3654 ** the restarts for recovering from input and output encoding
3655 errors only appear when there is in fact such an error to
3657 * fixed some bugs revealed by Paul Dietz' test suite:
3658 ** MISC.549 and similar: late transformation of unsafe type
3659 assertions into derived types caused unexpected code
3661 ** SCALE-FLOAT type deriver is less wrong.
3662 ** type derivers for EXP, LOG and similar functions compute result
3663 types for complex arguments better.
3664 ** (MISC.563) CONJUGATE type deriver works for very restricted
3666 ** out-of-line type testers for character strings are available.
3667 ** EQUAL compiler transform understands specialness of objects
3669 ** accessing double-floats stored on the stack now works on x86-64.
3670 ** debugger internals could sometimes create invalid lispobjs,
3671 resulting in GC crashes.
3672 ** MISC.548: type check weakening can convert required type into
3674 ** initialization forms for bindings are not in scope of free special
3677 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3678 * incompatible change: thread support for non-NPTL systems has
3679 been removed - locking is buggy and unreliable. A threaded
3680 SBCL build will now warn at startup and refuse to create
3681 new threads, unless futex support is detected in the kernel
3682 * incompatible change: the top level REPL now has only an ABORT
3683 restart associated with it, not TOPLEVEL and ABORT as it used to.
3684 TOP and TOPLEVEL are now available as debugger commands for
3685 returning to the top level.
3686 * incompatible change: forms evaluated in the REPL now use the
3687 global optimization policy.
3688 * incompatible change: user- and system-initialization files are
3689 no longer processed with LOAD, but by READ and EVAL; hence the
3690 global optimization policy, startup package, readtable, etc,
3692 * The .fasl file format number has been incremented because of
3693 various incompatible changes.
3694 * internal entry point details and argument counts no longer appear
3695 in backtraces unless explicitly requested by setting
3696 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3697 * built-in and standard functions no longer have names like "top
3698 level local call to FOO".
3699 * fixed bug 32: functions defined in non-null lexical environments
3700 now have more legible printed representation
3701 * fixed bug 33: functions defined in non-null lexical environemnts
3702 are now more amenable to inspection by INSPECT.
3703 * workaround for bug 354: XEPs no longer appear in backtraces unless
3704 explicitly requested.
3705 * fixed bug: receiving the signal which results from attempting to
3706 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3707 SIGBUS on other *BSDs) on architectures where the C stack is also
3708 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3709 to debugger confusion or wild instability. (reported by Cheuksan
3711 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3712 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3713 (reported by Lutz Euler)
3714 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3715 compiled code. (reported by Paul Dietz)
3716 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3717 specialized parameter to a method to something that is not TYPEP
3718 the specializer is now possible.
3719 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3720 face of package deletion.
3721 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3722 pathname. (reported by David Tolpin on c.l.l)
3723 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3724 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3725 STRING-STREAM and FILE-STREAM, respectively.
3726 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3727 than previously; in addition, its test suite is now run on build.
3728 (thanks to Luke Gorrie)
3729 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3730 * optimization: added a immediate representation for single-floats
3732 * fixed some bugs revealed by Paul Dietz' test suite:
3733 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3734 ** attempting to create a package with a colliding nickname causes
3735 correctable errors to be signalled.
3736 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3737 ** several x86-64 backend bugs related to sign-extension of immediate
3740 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3741 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3742 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3744 * fixed loading of multiply forward-referenced layouts.
3745 (thanks to Cheuksan Wang)
3746 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3747 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3748 (see COMPILE-FILE documentation for details of :PRINT option)
3749 * fixed bugs 19 and 317: fixed-format floating point printing is
3750 more accurate. This also fixes a bug reported by Adam Warner
3751 related to the ~@F format directive.
3752 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3754 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3755 dispatch table if the from-char is a dispatch macro character.
3756 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3757 by the wordsize no longer ignore the last word. (reported by Lutz
3759 * fixed bug in type checking of dynamic-extent variables. (reported
3761 * optimization: sequence traversal functions use their freedom to
3762 coerce function designators to functions.
3763 * optimization: code with many calls to CLOS methods specialized on
3764 CLOS classes has had redundant type checks removed.
3765 * optimization: added declarations to speed up operations that access
3766 the internal character database (for example STRING-UPCASE)
3767 * optimization: comparison operations between floats and sufficiently small
3768 fixnums no longer create extra rationals
3769 * fixed some bugs related to Unicode integration:
3770 ** portions of multibyte characters at the end of buffers for
3771 character-based file input are correctly transferred to the
3772 start of the buffer at the next read.
3773 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3774 passing it through to OPEN.
3775 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3776 argument given to internal calls to OPEN.
3777 ** the built-in comment readers (introduced by character sequences
3778 ";" and "#|") are more forgiving to encoding errors; they will
3779 STYLE-WARN and then attempt to resync the stream at a character
3780 boundary. (thanks to Teemu Kalvas)
3781 * fixed some bugs in the x86-64 port:
3782 ** Negative short int return values from c-calls are sign-extended
3784 ** The stack is aligned to 16-bytes for c-calls, as required by
3785 the ABI. (thanks to Cheuksan Wang)
3786 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3787 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3788 for enums. (thanks to Vincent Arkesteijn)
3789 ** Multiple small optimizations and bugfixes for floating point
3791 * fixed some bugs revealed by Paul Dietz' test suite:
3792 ** Space, Tab, Linefeed, Return and Page have the invalid
3793 secondary constituent character trait.
3794 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3796 ** WITH-INPUT-FROM-STRING should only update the index place on
3798 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3799 works more reliably.
3800 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3801 with one-dimensional arrays with fill pointers.
3802 ** TYPE-OF failed on a complex with an integer realpart and a
3804 ** compiler failure during type inference for the code of form
3805 (IF (EQL X (THE ...)) ...) (MISC.535).
3807 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3808 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3809 platform. The port supports 61-bit fixnums, large memory spaces
3810 and reloading shared object files.
3811 * enhancement: saving cores with foreign code loaded is now
3812 supported on ppc/Darwin in addition to the previously supported
3814 * enhancement: the statistical profiler now walks deeper into the
3815 call stack for more meaningful call-graphs and accrued time
3816 reports (x86/x86-64 only). It also now reports time spent in
3818 * enhancement: it is now possible to trace most individual methods
3819 of a generic function in addition to tracing the generic function
3821 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3823 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3824 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3825 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3826 produces an error. (thanks to Vincent Arkesteijn)
3827 * bug fix: NAMESTRING on pathnames with :WILD components in their
3828 directories works correctly. (thanks to Artem V. Andreev)
3829 * fixed bug 125: compiler preserves identity of closures. (reported
3831 * bug fixed: functions with &REST arguments sometimes failed with
3832 "Undefined function" when compiled with (DEBUG 3). (reported by
3834 * bug fix: overflow during compiling of setting element of a bit
3835 vector with constant index and value. (reported by Timmy Douglas)
3836 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3837 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3838 * on x86 compiler partially supports stack allocation of dynamic-extent
3840 * GO and RETURN-FROM do not check the extent of their exit points
3841 when compiled with SAFETY 0.
3842 * fixed some bugs related to Unicode integration:
3843 ** encoding and decoding errors are now much more robustly
3844 handled; it should now be possible to recover even from invalid
3845 input or output to the terminal. (thanks to Teemu Kalvas)
3846 ** provided a first cut at implementing STRING-TO-OCTETS and
3847 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3848 ** altered the SB-MD5 contributed module slightly, changing the
3849 interface just enough for it to be supportable for builds where
3850 lisp characters are not eight bits.
3851 * fixed some bugs revealed by Paul Dietz' test suite:
3852 ** the FORMATTER-generated functions for ~V[ conditionals require
3853 the correct number of arguments.
3854 ** READ-FROM-STRING returns the mandated second value when applied
3855 to displaced strings.
3856 ** the #\Rubout and #\Backspace characters are treated as invalid
3857 constituent characters by the tokenizer.
3859 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3860 * new feature: reloading changed shared object files with
3861 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3862 * new feature: references to foreign variables and functions
3863 can now be compiled and loaded before the corresponding shared
3864 object file is loaded, as long as the foreign definitions are
3865 available at runtime.
3866 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3867 supported. (thanks to Dan Debertin)
3868 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3869 just keywords. (thanks to Vincent Arkesteijn)
3870 * fixed bug #331: structure-class instances corresponding to
3871 DEFSTRUCT forms are now created eagerly.
3872 * fixed bug #345: backtraces from calls to undefined functions work
3873 on x86 as well. Related bug #61 is now also partially fixed on x86
3874 (backtraces from throws to unknown catch tags.)
3875 * bug fix: lambda-list parsing is now stricter vrt. order and number
3876 of lambda-list keywords.
3877 * bug fix: as specified by AMOP, an error is signalled if a
3878 class-option appears multiple times in a DEFCLASS form. (reported
3880 * bug fix: RANDOM can be compiled when the compiler derives the type
3881 of its numeric argument as a disjoint set of small integers.
3882 (reported by Paul Dietz)
3883 * bug fix: starting a core saved with shared objects loaded when
3884 those objects are not available no longer causes threaded SBCL to
3885 hang. (reported by Sean Ross)
3886 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3888 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3889 argument, which must always be NIL. (reported by Kalle Niemitalo)
3890 * bug fix: printing 1.0d+23 no longer results in an error.
3891 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3892 * bug fix: structure slot setters preserve evaluation order. (thanks
3894 * fixed some bugs related to Unicode integration:
3895 ** RUN-PROGRAM can allow its child to take input from a Lisp
3896 stream. (reported by Stefan Scholl)
3897 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3898 locales. (reported by Ken Causey)
3899 * fixed some bugs revealed by Paul Dietz' test suite:
3900 ** INCF, DECF and REMF evaluate their place form as specified in
3902 ** FORMATTER expands ~{ ~} iteration directives with V or #
3903 parameters correctly.
3904 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3905 consequent uses no arguments correctly.
3906 ** the system has a partial understanding of the (COMPLEX RATIO)
3908 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3911 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3912 * new feature: a build-time option (controlled by the :SB-UNICODE
3913 keyword feature, enabled by default) for building the system with
3914 support for the entire 21-bit character space defined by the
3916 * new feature: the system now has rudimentary external-format
3917 support; the primary user-visible change at this time is that
3918 characters with the high bit set (such as lower-case-e-acute) will
3919 print correctly to a terminal in a UTF-8 environment.
3920 * minor incompatible change: BASE-CHAR no longer names a class;
3921 however, CHARACTER continues to do so, as required by ANSI.
3922 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3923 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3924 has been moved to the SB-EXT package (temporarily re-exported from
3926 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3927 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3929 * fixed bug #351: better error-handlind and reporting for malformed
3931 * fixed bug #350: bignum-printing is now more memory-efficient,
3932 allowing printing of very large bignums, eg. (expt 2 10000000).
3933 (reported by Bruno Haible)
3934 * fixed bug #302: better primitive-type selection for intersection
3936 * fixed bug #308: non-graphic characters now all have names, as
3937 required. (reported by Bruno Haible)
3938 * bug fix: redefining a class with different superclasses now correctly
3939 removes it from the direct-subclasses of its previous superclasses.
3940 (reported by David Morse)
3941 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3942 new value now works. (reported by Bruno Haible)
3943 * bug fix: correct canonicalization of multiple non-standard slot
3944 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3945 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3946 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3947 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3948 now exists, an signals an error.
3949 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3950 during macroexpansion for non-iteration variables as well. (reported
3951 by Bruno Haible for CMUCL)
3952 * bug fix: Cyclic structures and unprintable objects in compiler
3953 messages no longer cause errors. (reported by Bruno Haible)
3954 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3955 and READ-FROM-STRING all now return a primary value of NIL if
3956 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3957 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3958 (reported by Bruno Haible for CMUCL)
3959 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3960 do not designate a condition. (reported by Bruno Haible for
3962 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3963 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3964 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3965 permitting resolution in favour of any of the conflicting symbols.
3966 (reported by Bruno Haible for CMUCL)
3967 * bug fix: EQUAL compiler optimizations is less aggressive on
3968 strings which can potentially compare true despite having distinct
3969 specialized array element types.
3970 * bug fix: unit enumerations can be defined without dividing by
3971 zero. (thanks to Vincent Arkesteijn)
3972 * FORMAT compile-time argument count checking has been enhanced.
3973 (report from Bruno Haible for CMUCL)
3974 * a partial workaround for the bug 262: the compiler does not try to
3975 inline-expand a local function doing RETURN-FROM from a deleted
3976 BLOCK. (thanks to Peter Denno for the bug report and to David
3977 Wragg for the simple test case)
3978 * fixed some bugs revealed by Paul Dietz' test suite:
3979 ** RENAME-PACKAGE allows all package designators as new package
3981 ** constraint propagation and lambda variable substitution are
3982 more cautious in dealing with partially deleted code.
3983 ** compiler sometimes lost reoptimization passes.
3984 ** CERROR, given a condition as condition designator, passes its
3985 remaining arguments to the continue format control without
3987 ** Case-altering FORMAT directives work correctly on non-ASCII
3989 ** The REAL type specifier handles bounds outside the floating
3990 point ranges without signalling FLOATING-POINT-OVERFLOW.
3991 ** Functions with IR1-transformations can create intercomponent
3992 references to global functions.
3993 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3995 ** FORMAT ~R treats a nil value for its first parameter correctly.
3997 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3998 * enhancement: saving cores with foreign code loaded is now
3999 supported on x86/NetBSD and sparc/Linux in addition to the previously
4000 supported platforms.
4001 * bug fix: on some platforms repeated installations caused multiple
4002 copies of HTML documentation to be installed -- should not happen
4003 any more. (reported by Stefan Scholl)
4004 * bug fix: parsing self-recursive alien record types multiple times
4005 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4006 original patch by Helmut Eller for CMUCL)
4007 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4008 (thanks to Richard Kreuter)
4009 * bug fix: defining classes whose accessors are methods on existing
4010 generic functions in other (locked) packages no longer signals
4011 bogus package lock violations. (reported by François-René Rideau)
4012 * bug fix: special variables as DEFMETHOD parameters no longer have
4013 associated bogus type declarations. (reported by David Wragg and
4015 * bug fix: read-write consistency on streams of element-type
4016 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4017 * bug fix: redefiniton of the only method of a generic function with
4018 no DEFGENERIC no longer emits a full WARNING. In addition,
4019 redefinition of generic functions with no DEFGENERIC to an
4020 incompatible lambda list now signals an error. (thanks to Zach
4022 * bug fix: DEFGENERIC now works even when there's a function of the
4023 same name in an enclosing lexical environment. (thanks to Zach
4025 * fixed compiler failure, caused by instrumenting code during
4026 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4027 * optimization: added loop analysis and improved register allocation
4028 * fixed some bugs revealed by Paul Dietz' test suite:
4029 ** POSITION on displaced vectors with non-zero displacement
4030 returns the right answer.
4031 ** (SIMPLE-STRING) is a valid type specifier for sequence
4033 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4035 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4036 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4038 ** The justification version of the FORMAT ~< directive treats
4039 non-zero minpad parameter correctly.
4041 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4042 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4043 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4044 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4045 the supported interface.
4046 * new feature: Single-stepping of code compiled with DEBUG 2 or
4047 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4048 * new feature: saving cores with foreign code loaded is now
4049 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4050 Timothy Moore's work for CMUCL)
4051 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4052 parameters to * instead of NIL if no initform is supplied.
4053 (reported by Johan Bockgaard)
4054 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4055 correctly when FUNCALL appears as the car of the form. Note:
4056 despite this FUNCALL forms are not currently subject to
4057 compiler-macro expansion. (port of Raymond Toy's fix for the
4058 same from CMUCL, reported by Johan Bockgaard)
4059 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4060 (thanks for Teemu Kalvas)
4061 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4062 case instead of terminating the iteration (thanks for Julian
4063 Squires, Sean Champ and Raymond Toy)
4064 * bug fix: incorrect expansion of defgeneric that caused a style
4065 warning. (thanks for Zach Beane)
4066 * bug fix: slot accessor effective method computation works properly
4067 for classes with multiple non-standard applicable methods on
4068 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4069 * on x86 compiler supports stack allocation of results of LIST and
4070 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4071 CMUCL implementation by Gerd Moellmann)
4072 * fixed some bugs revealed by Paul Dietz' test suite:
4073 ** FORMAT strings with both the ~<~:;~> form of the justification
4074 directive and pretty-printing directives cause an error.
4076 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4077 * incompatible change: the internal functions
4078 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4079 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4080 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4081 instead of the old functions.
4082 * new feature: on platforms where "dladdr" is available foreign
4083 function names now appear in backtraces. (based on Helmut Eller's
4085 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4086 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4088 * documentation: ASDF manual is now distributed with SBCL.
4089 * bug fix: SBCL can now load its contributed modules with REQUIRE
4090 even if the system-provided entries have been removed from
4091 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4093 * bug fix: backtraces involving undefined functions or assembly
4094 routines are more informative. (thanks to Brian Downing)
4095 * bug fix: mutually referent alien structures now work correctly.
4096 (reported by Rick Taube)
4097 * bug fix: structures defined by WITH-ALIEN can be referred to
4098 within other definitions in the same WITH-ALIEN.
4099 * bug fix: division operators (MOD, TRUNCATE and the like) with
4100 constant zero divisors and integer dividends no longer generate
4102 * bug fix: provide default methods for INPUT-STREAM-P and
4103 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4104 * bug fix: improve the detection and resolution of MOP metacycles
4105 (where effective method computation depends on the generic function
4106 having its effective method computed). (reported by Bruno Haible)
4107 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4108 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4109 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4110 * bug fix: pathnames with relative directory components can be
4111 represented relative to default pathnames.
4112 * optimization: in taking the GCD of bignums, reduce the two bignums
4113 to approximately the same size (using Euclid's algorithm) before
4114 applying the more sophisticated binary GCD. (thanks to Juho
4116 * optimization: COUNT on bitvectors now operates word-at-a-time.
4117 * optimization: ASH with a positive, but not necessarily constant,
4118 (leftwards) shift, when in a modular context, is compiled to a
4120 * fixed some bugs revealed by Paul Dietz' test suite:
4121 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4122 if the corresponding argument is NIL.
4123 ** FORMAT directives accepting a minpad parameter treat negative
4125 ** literal commas as character parameters to FORMAT directives are
4127 ** literal spaces directly after ~<Newline> directives within a
4128 format-logical-block (~:< ~@:>) do not induce :FILL-style
4129 conditional newlines.
4130 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4131 as specified: it no longer includes conditional newlines).
4132 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4134 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4135 :PER-LINE-PREFIX argument does not evaluate to a string.
4137 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4138 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4139 the manual for details; for now, package locks can be disabled by
4140 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4141 if no major problems are found then it is likely that they will be
4142 compiled in unconditionally.
4143 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4144 unsupported operators on all platforms. To load a shared library
4145 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4146 object file, link it into a shared library outside of SBCL and
4147 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4149 * bug workaround: ROOM T and the GC were not working together
4150 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4151 reporting facility aren't preserved. That reporting has been
4152 disabled, so now until and unless someone figures out how to make it
4153 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
4154 * minor incompatible change: as threatened around sbcl-0.8.0, the
4155 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
4156 The symbols are also exported from SB-PCL for backwards
4157 compatibility, but more so than before SB-PCL should be treated as
4158 an implementation-internal package.
4159 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
4161 * the SB-SPROF contrib now works on (most) non-x86 architectures.
4162 It is known as of this release not to work on the Alpha, however.
4163 * fixed bug #167: errors signalled due to illegal syntax in method
4164 bodies are now more legible.
4165 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4166 designators and can hence be used with TYPEP.
4167 * fixed bug #333: CHECK-TYPE now ensures that the type error
4168 signalled, if any, has the right object to be accessed by
4169 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4170 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4171 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4173 * fixed bug #334: programmatic addition of slots using specialized
4174 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4175 and :ALLOCATION :CLASS slots.
4176 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4177 float exponents. (rereported by Peter Seibel)
4178 * fixed a bug: #\Space (and other whitespace characters) are no
4179 longer considered to be macro characters in standard syntax by
4180 GET-MACRO-CHARACTER.
4181 * fixed bug: initialization of condition class metaobjects no longer
4182 causes an instance of the condition to be created. (reported by
4184 * fixed bug: it is now possible to have slots such that
4185 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4186 description is neither :INSTANCE nor :CLASS.
4187 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4188 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4189 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4190 non-standard SLOT-DEFINITION-ALLOCATION values.
4191 * fixed bugs: various race conditions handling exiting threads.
4192 CL-PPCRE's thread torture test now passes.
4193 * fixed arguably-a-bug: GC time proportional to number of threads in
4194 system even when most of them are idle
4195 * optimization: improved performance of BIT and SBIT on bit-vectors.
4196 * .fasl file incompatibility: The fasl file version number has
4197 been incremented because of changes associated with package locks.
4199 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4200 * minor incompatible change: the system no longer provides
4201 optimization hints (conditions which are TYPEP
4202 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4203 mode; these hints are still emitted when higher SPEED optimization
4205 * new contrib module: a sampling profiler (profiling by statistical
4206 sampling, rather than by instrumenting functions) is available as
4207 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4208 * the behaviour of the standard function ED is now customizeable by
4209 third parties through a hook variable: see ED's documentation
4210 string for information on the protocol.
4211 * the compiler no longer emits efficiency notes for (FUNCALL X)
4212 when the type of X is uncertain under default optimization
4214 * fixed bug 276: mutating a binding of a specialized parameter to a
4215 method to something that is not TYPEP the specializer is now
4217 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4218 exhibit the required behaviour on the x86 platform. (thanks to
4219 Peter van Eynde, Eric Marsden and Bruno Haible)
4220 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4221 even for difficult arguments. (reported by Peter Graves)
4222 * fixed bug 141a: the backquote printer now descends quoted
4224 * fixed another bug in backquote printing: no more destructive
4225 modification of the form's list structure. (reported by Brian
4227 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4228 move between its address being taken and the call to
4229 interrupt_thread, fixing a crashing race condition.
4230 * the SB-POSIX contrib implementation has been adjusted so that it
4231 no longer exhibits ridiculously poor performance when constructing
4232 instances corresponding to C structs.
4234 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4235 * minor incompatible change: the sb-grovel contrib now treats C
4236 structures as alien (in the sense of SB-ALIEN) objects rather than
4237 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4238 has implications for memory management of client code
4239 (sb-grovel-returned objects must now be manually managed) and for
4240 type safety (alien objects now have full types).
4241 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4242 used to control emission of compiler diagnostics, rather than the
4243 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4244 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4245 quality should be considered deprecated.
4246 * install.sh now installs the user manual as well
4247 * (not quite a new documentable feature, but worth considering in
4248 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4249 beginnings of a semantically meaningful condition hierarchy is
4250 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4252 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4253 designator as the defaults argument.
4254 * fixed bug: Displaced arrays whose displaced-to array has become
4255 too small now cause ARRAY-DIMENSION to signal an error, providing
4256 for safer bounds-checking. (reported by Bruno Haible)
4257 * fixed bug: DEFCLASS slot definitions with identical :READER and
4258 :WRITER names now signal a reasonable error. (reported by Thomas
4260 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4262 * fixed bug: Invalid slot specification errors now print correctly.
4263 (thanks to Zach Beane)
4264 * fixed bug 320: Shared to local slot value transfers in class
4265 redefinitions now happen corrently from superclasses as
4266 well. (reported by Bruno Haible)
4267 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4269 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4270 improper lists correctly. (reported by Bruno Haible)
4271 * fixed bug 313: source-transform for <fun-name> was erroneously
4272 applied to a call of a value of a variable with name <fun-name>.
4273 (reported by Antonio Menezes Leitao)
4274 * fixed bug 307: The obsolete instance protocol ensures that
4275 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4276 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4277 remove dead unknown-values globs from the middle of the stack.
4278 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4279 easier to resume long computations after using *BREAK-ON-SIGNALS*
4280 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4281 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4282 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4283 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4284 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4285 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4287 * fixed a (fairly theoretical) bug in string printing: if
4288 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4289 does not have array-element-type equal to the most general string
4291 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4292 function name. (thanks to Nikodemus Siivola)
4293 * fixed bug: compile-time format string checker failed on
4294 non-closed ~{. (reported by Thomas F Burdick)
4295 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4296 don't warn on legal loop code involving more than one aggregate
4297 boolean. (thanks to Nikodemus Siivola)
4298 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4299 in keyword position to MAKE-PACKAGE was not being reported as
4301 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4302 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4304 * fixed bugs 280 and 312: the checking for multiple definitions in a
4305 file is less likely to become confused by uses of inline
4307 * fixed bug: the #S reader macro performs the keyword coercion
4308 specified for slot names. (reported by Kalle Niemitalo)
4309 * fixed bug: lambda lists may contain symbols whose names start with
4310 & but are not lambda-list-keywords; their occurrence triggers a
4312 * fixed bug 321: define-method-combination argument lambda lists do
4313 not cause invalid code to be generated when &optional or &aux
4314 variables have default values. (reported by Bruno Haible)
4315 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4316 have CLOS classes; this appears also to have fixed reported
4317 instability in stack exhaustion detection.
4318 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4319 MUFFLE-WARNING when no associated restart is present is now
4321 * optimization: rearranged the expansion of various defining macros
4322 so that each expands into only one top-level form in a
4323 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4325 * optimization: used a previously little-used slot in symbols to
4326 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4328 * fixed some bugs revealed by Paul Dietz' test suite:
4329 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4331 ** Fixed an optimization bug related to inheritance of initforms
4332 from local to shared slots.
4333 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4334 ** CAST optimizer forgot to flush argument derived type.
4335 ** print/read consistency on floats is now orders of magnitude
4336 more likely. (thanks also to Bruno Haible for a similar report
4338 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4339 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4340 for objects of type REAL. Make it so.
4341 ** SXHASH is specified (infelicitously) to respect similarity,
4342 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4343 it so. (thanks to Markus Ziegler)
4344 ** on the Alpha, the compiler succeeds in compiling functions
4345 returning a known number of arguments greater than 63.
4346 ** fixed handling of invalid NIL arguments in keyword position
4348 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4350 ** provided a readably-printable representation for RANDOM-STATE
4352 ** ensured that pathnames, where they have a namestring, always
4353 print using #P"..." syntax.
4355 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4356 * Support for the forthcoming 2.0 version of the NetBSD kernel
4357 running on x86 hardware has been added. (thanks to Perry
4358 E. Metzger most immediately, and others for their past work)
4359 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4360 current release version; SBCL's OpenBSD support had been broken
4361 since about the time of OpenBSD's switch to ELF binary format.)
4362 * [placeholder for DX summary]
4363 ** user code with &REST lists declared dynamic-extent, under high
4364 speed or space and low safety and debug optimization policy.
4365 * The manual has been converted to Texinfo format and the debugger
4366 chapter from the cmucl manual has been added.
4367 * A facility has been added to extract documentation strings from
4368 sbcl and store them as Texinfo-formatted snippets for inclusion in
4369 the manual (via Texinfo's @include directive)
4370 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4371 the test case to Dave Roberts)
4372 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4373 pointers. (reported by Sean Ross)
4374 * bug fix: PROFILE output is printed nicely even for large numerical
4375 values. (thanks to Zach Beane)
4376 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4377 greater than 32 handle EOF correctly.
4378 * bug fix: on X86 an immediate argument of the IMUL instruction is
4379 correctly printed in disassembly. (thanks to Lutz Euler)
4380 * bug fix: class slots in redefined classes preserve their old
4381 values. (thanks to Bruno Haible and Nikodemus Siivola)
4382 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4383 succeeds. (reported by Marco Baringer)
4384 * fixed some bugs revealed by Paul Dietz' test suite:
4385 ** READ-SEQUENCE now works on ECHO-STREAMs.
4386 ** RATIONALIZE works more according to its specification. (thanks
4389 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4390 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4391 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4392 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4393 should matter to you only if you rebind the printer control
4394 variables and then find you want different bindings in the
4395 debugger than in the ordinary execution of your program.)
4396 * The runtime build system has been tweaked to support building
4397 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4398 assembler and linker. (thanks to Nikodemus Siivola)
4399 * Unbound, undefined, undeclared variables now trigger full
4400 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4401 more often programmer error than deliberate exploitation of undefined
4403 * optimization: the hash algorithm for strings has changed to one
4404 that is less vulnerable to spurious collisions. (thanks to Juho
4406 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4407 needless bounds checking. (thanks to Juho Snellman)
4408 * optimization: implemented multiplication as a modular
4409 (UNSIGNED-BYTE 32) operation on the PPC backend.
4410 * fixed some bugs revealed by Paul Dietz' test suite:
4411 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4413 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4414 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4415 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4417 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4419 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4421 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4422 their output stream on EOF from read.
4423 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4424 have been read to end-of-file.
4425 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4427 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4428 description of determination of which consecutive characters
4430 ** Printing the "Space" character with escaping on now yields "#\\ ",
4431 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4432 ** Reading floating-point numbers with *READ-BASE* set to a number
4433 less than 10 works correctly.
4434 ** Reading floating-point numbers with *READ-BASE* set to a number
4435 more than 10 works correctly.
4436 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4437 the readtable currently in effect.
4439 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4440 * minor incompatible change: parsing of namestrings on a physical
4441 (Unix) host has changed; numbers after the final #\. in a
4442 namestring are no longer interpreted as a version field. This is
4443 intented to be largely invisible to the user, except that the
4444 meaning of the namestring "*.*.*" has changed: it now refers to a
4445 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4446 should usually be replaced by
4447 (make-pathname :name :wild :type :wild :version :wild)
4448 with the added benefit that this is more likely to be portable.
4449 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4450 option to OPEN now signals an error if the file being opened
4451 exists; this may have an impact on existing code.
4452 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4453 signals received, on the PowerPC platforms (both Linux and
4454 Darwin). (thanks to Pierre Mai for pointing out the location of
4456 * several fixes on OS X: The system now builds and runs cleanly on
4457 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4458 (thanks to Brian Mastenbrook)
4459 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4460 second-resolution: integer multiples of 1/3600 between -24 and 24.
4461 (thanks to Vincent Arkesteijn)
4462 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4463 type when called with 1 argument; PEEK-CHAR checked type of
4464 PEEK-TYPE only after having read first character from a
4465 stream. (reported by Peter Graves)
4466 * bug fix: the garbage collector now has much better locality
4467 behaviour, and in particular no longer treats all memory as being
4468 exhausted when many small objects point to each other in a deeply
4470 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4471 recognized as being TYPEP their class.
4472 * bug fix: the PUSHNEW documentation string has been corrected.
4473 (thanks to Vincent Arkesteijn)
4474 * bug fix: defaulting of the value for the last of an atypically
4475 large number of multiple values being bound was not being
4476 performed correctly on the Alpha or PPC platforms
4477 * optimization: implemented multiplication as a modular
4478 (UNSIGNED-BYTE 32) operation on the x86 backend.
4479 * optimization: SEARCH on simple-base-strings can now be open-coded.
4480 (see also contrib/compiler-extras.lisp for inspiration for
4481 teaching the compiler about the Boyer-Moore algorithm).
4482 * value, returned by MAX (and MIN) called with several EQUALP, but
4483 not EQL, arguments now does not depend on compiler settings.
4484 * fixed some bugs revealed by Paul Dietz' test suite:
4485 ** in stack analysis liveness information is propagated from
4486 non-local entry points.
4487 ** pathwise CAST removing failed when the CAST node did not start
4489 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4490 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4492 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4493 host is already defined.
4494 ** RENAME-FILE works on streams instead of signalling an internal
4496 ** PEEK-CHAR uses the current readtable when determining whether
4497 or not a character is whitespace.
4498 ** MERGE-PATHNAMES handles the case when the pathname does not
4499 specify a name while the default-pathname specifies a version.
4500 ** Pathnames now stand a better chance of respecting print/read
4502 ** Attempting to use standardized file system operators with a
4503 pathname with invalid :DIRECTORY components signals a
4505 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4507 ** DIRECTORY on logical pathnames is more correct.
4508 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4509 signal a TYPE-ERROR if their argument is not a stream.
4510 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4511 designator argument does not designate a stream.
4512 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4513 examining the synonym.
4514 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4516 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4517 element-type larger than ([UN]SIGNED-BYTE 32).
4519 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4520 * When built with the :SB-FUTEX feature, threaded builds now take
4521 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4522 for faster/more reliable mutex and condition variable support.
4523 * Incompatible change (but one you probably shouldn't have been using
4524 anyway): the interface and code for arbitrating between multiple
4525 threads in the same user session has been redesigned.
4526 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4527 error when called without an explicit environment argument.
4528 (thanks to Nikodemus Siivola)
4529 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4530 confused about their position. (thanks to Adam Warner and Gerd
4532 * bug fix: Pretty printing backquoted forms with unquotations in the
4533 argument list position of various code constructs such as LAMBDA
4534 now works correctly. (reported by Paul Dietz)
4535 * bug fix: Pretty printing unquotations no longer loses all
4536 stream position information.
4537 * optimization: performance of string output streams is now less
4538 poor for multiple small sequence writes.
4539 * optimization: performance of CSUBTYPEP in the presence of complex
4540 expressions involving CONS and NOT many times has been improved.
4541 (reported by Paul Dietz)
4542 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4544 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4545 streams for the REPL, for the debugger, and so on. (thanks to
4547 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4548 * fixed some bugs revealed by Paul Dietz' test suite:
4549 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4550 is ignored if it is too small, rather than propagating through
4551 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4552 ** extremely complex negations of CONS types were not being
4553 sufficiently canonicalized, leading to inconsistencies in
4555 ** VALUES tranformer lost derived type.
4557 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4558 * fixed a bootstrapping bug: the build process no longer assumes
4559 that the various BOOLE-related constants have the same value in
4560 host and target lisps. (noted by Paul Dietz' test suite on an
4561 SBCL binary built from CLISP)
4562 * The system can now be dynamically linked on the MIPS platform,
4563 which enables dynamic loading of foreign code from Lisp. (thanks
4564 to Ralf Baechle for discussions on the MIPS ABI)
4565 * The system now records debugging information for its own source
4566 files in a filesystem-position-independent manner, relative to
4567 the "SYS" logical host.
4568 * fixed a compiler bug: MV-LET convertion did not check references
4569 to the "max args" entry point. (reported by Brian Downing)
4570 * tweaked disassembly notes to be less confident about proclaiming
4571 some instruction as an LRA. (thanks to Brian Downing)
4572 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4573 now each have their own history, command character, and other
4574 characteristics. (thanks to David Lichteblau)
4575 * fixed some bugs revealed by Paul Dietz' test suite:
4576 ** compiler failure in compiling LOGAND expressions including a
4578 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4579 shift greater than 32.
4580 ** FLUSH-DEST did not mark blocks for type check regeneration.
4581 ** HANDLER-CASE failed to accept declarations in handler clauses
4582 in some circumstances.
4584 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4585 * New code in contrib/sb-introspect (still probably not entirely
4586 stable yet) provides some support for smart Lisp development
4587 environments like SLIME.
4588 * The conditions signalled for errors occurring when loading .fasl
4589 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4590 in a way which should help ASDF recover gracefully.
4591 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4592 stuff has been cleaned up. If you code contrib/ stuff, this might
4593 affect you, and you can look at contrib/README, contrib/STANDARDS,
4594 and/or the 0.8.4.27 diff to check.
4595 * In full calls the compiler now does not generate checks for declared
4596 argument types for all arguments.
4597 * various threading fixes
4598 ** and some experimental patches which didn't make it into
4599 the main tree for this release, but which are shipped in
4600 contrib/experimental-thread.patch as a possible fix for some
4601 failures (deadlock, spinning...) in GC-intensive multithreaded
4603 * fixed PPC build problem (source code incompatibility of different
4604 library versions): added offsetof() hackery which attempts to divine
4605 where glibc maintainers put uc_mcontext today
4606 * fixed bug 282: compiler does not trust type assertions while passing
4607 arguments to a full call.
4608 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4609 &OPTIONAL VALUES type parameter.
4610 * fix bug 214: algorithm for noting rejected templates is now more
4611 similar to that of template seletion. (also reported by rydis on
4613 * fixed bug 141b: printing backquoted information readably and prettily
4614 inserts a space where necessary.
4615 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4616 (CHARACTER 10) are now reported as errors, rather than propagated
4617 as unknown types. (reported by piso on #lisp)
4618 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4619 with values NIL and :ERROR. (thanks to Milan Zamazal)
4620 * fixed bug 191c: CLOS now does proper keyword argument checking as
4621 described in CLHS 7.6.5 and 7.6.5.1.
4622 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4623 longer raise an error; further, using a list as a for-as-arithmetic
4624 counter now raises a meaningful error.
4625 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4626 now understood by sequence creation functions such as MAKE-SEQUENCE
4628 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4629 a STRING-INPUT-STREAM.
4630 * compiler enhancement: SIGNUM is now better able to derive the type
4632 * type declarations inside WITH-SLOTS are checked. (reported by
4634 * fixed some bugs revealed by Paul Dietz' test suite:
4635 ** incorrect optimization of TRUNCATE for a positive first
4636 argument and negative second.
4637 ** compiler failure in let-convertion during flushing dead code.
4638 ** compiler failure while deriving type of TRUNCATE on an
4639 interval, containing 0.
4640 ** ASH of a negative bignum by a negative bignum count now returns
4642 ** intersection of CONS types now canonicalizes properly, fixing
4643 inconsistencies in SUBTYPEP.
4645 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4646 * incompatible change: The --disable-debugger command line
4647 option now clobbers the debugger at a more fundamental
4648 level, by redefining #'INVOKE-DEBUGGER instead of by
4649 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4650 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4651 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4652 enter the debugger REPL and then suffer recursive errors
4653 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4654 while under the new system, BREAK in --disable-debugger mode
4655 terminates the system just as an unhandled error would.
4656 * fixed compiler performance when processing loops with a step >1;
4657 * bug fix: DOCUMENTATION now retrieves generic function
4658 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4659 support has been systematized, and now supports the methods
4660 specified by ANSI, along with a default method and a method for
4661 slot documentation. (reported by Nathan Froyd)
4662 * bug fix: effective methods associated with a generic function are
4663 no longer cached over a change of that generic function's method
4664 combination. (reported by Andreas Fuchs)
4665 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4666 names a non-existent directory. (thanks to Andreas Fuchs)
4667 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4668 the PPC platform, lead to stack corruption; this has been fixed.
4669 (reported by Rainer Joswig)
4670 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4671 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4672 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4673 arithmetic in general, is now much more reliable on the PPC
4675 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4676 platform now returns the right answer.
4677 * optimization: restored some effective method precomputation in
4678 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4679 precomputation is now tunable.
4680 * optimization: compiler-internal data structure use has been
4681 reviewed, and changes have been made that should improve the
4682 performance of the compiler by about 20%.
4683 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4684 simple-base-strings and simple-bit-vectors is improved.
4685 * optimization: the optimization of 32-bit logical and arithmetic
4686 functions introduced in version 0.8.3 on the x86 has been
4687 implemented on the mips, ppc and sparc platforms; an
4688 implementation of the same facility, but for 64-bit arithmetic,
4689 has been added for the alpha.
4690 * microoptimization: the compiler is better able to make use of the
4691 x86 LEA instruction for multiplication by constants.
4692 * bug fix: in some situations compiler did not report usage of
4693 generic arithmetic in (SPEED 3) policy.
4694 * bug 145b fix: compiler used wrong type specifier while converting
4695 MEMBER-types to numeric.
4696 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4698 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4699 index argument now works properly on the Alpha platform.
4700 * bug fix: floating point exception treatment on the Alpha platform
4702 * bug fix: FILE-POSITION works much better on string input and
4703 output streams. (thanks to Nikodemus Siivola)
4704 * bug fix: many threading/garbage collection symptoms sorted.
4705 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4706 might be pseudo-atomic.
4707 * internal change: Stopping for GC is now done with signals not
4708 ptrace. GC is now done in whichever thread wanted it, instead of
4710 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4712 * bug fix: result form in DO is not contained in the implicit
4714 * incompatible change: ICR structure is changed; the value part of
4715 CONTINUATION is now called LVAR; corresponding functions are
4716 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4717 * added type deriver for ISQRT (thanks to Robert E. Brown).
4718 * bug fix: better support for loading from the command line when an
4719 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4721 * fixed some bugs revealed by Paul Dietz' test suite:
4722 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4723 ** ROUND and FROUND now give the right answer when given very
4724 small float arguments.
4725 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4727 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4728 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4729 ** LCM should return a non-negative integer.
4730 ** PARSE-INTEGER returned the index of a terminator instead of the
4731 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4732 ** PARSE-INTEGER returned an incorrect index being applied to a
4734 ** LCM with two arguments of 0 returns 0 rather than signalling
4736 ** unsigned addition of a 32-bit constant with the high bit set no
4737 longer causes an internal compiler error on the x86.
4738 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4739 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4740 with negative last argument.
4741 ** byte specifiers with zero size and position no longer cause
4742 an error during type derivation.
4743 ** bignum multiplication on the Alpha platform now returns the
4745 * porting: The system now builds on SuSE AMD64, although it still
4746 generates a 32-bit binary.
4747 * .fasl file incompatibility: The fasl file version number has
4748 been incremented (because of the changes to internal compiler
4749 data structures referred to above).
4751 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4752 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4753 more accurately, on the Darwin kernel running on PowerPC hardware.
4754 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4755 * Compiler code deletion notes now signal a condition of type
4756 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4757 an associated MUFFLE-WARNING restart.
4758 * The compiler now performs limited argument count validation of
4759 constant format strings in FORMAT, and where appropriate in ERROR,
4760 CERROR and WARN. (thanks to Gerd Moellmann)
4761 * New ASDF-INSTALL contrib can be used for automatic download and
4762 installation of third-party Lisp code from CCLAN or other sites
4764 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4765 which forces another thread to execute a function supplied by the
4767 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4768 now accept and act upon their :ELEMENT-TYPE keyword argument.
4769 (reported by Martin Atzmueller, Edi Weitz)
4770 * bug fix: FILE-POSITION now accepts position designators up to
4771 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4772 is the greater. (thanks to Patrik Nordebo)
4773 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4774 Kalle Olavi Niemitalo)
4775 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4776 printable. (reported by Eric Marsden)
4777 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4778 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4779 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4780 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4781 (thanks to Stig Sandoe)
4782 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4783 UNREAD-CHAR now correctly includes the unread character in the
4784 target sequence. (thanks to Gerd Moellmann)
4785 * bug fix in threaded builds: the system can now be suspended and
4786 resumed by shell job control with minimal disruption.
4787 * bug fixes in times and timezones >2038AD
4788 * better handling of "where is GNU make?" problem in build scripts
4789 (thanks to Nikodemus Siivola)
4790 * new optimization: inside a named function any reference to a
4791 function with the same name is considered to be a self-reference;
4792 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4793 optimization quality.
4794 * new optimization on x86: logical functions and + now have
4795 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4796 used when the result is truncated to 32 bits.
4797 * VALUES declaration is partially enabled.
4798 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4799 * fixed some bugs revealed by Paul Dietz' test suite:
4800 ** The system now obeys the constraint imposed by
4801 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4802 types form a lattice under type intersection.
4803 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4804 ** ASSOC now ignores NIL elements in an alist.
4805 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4806 and (1+ MOST-POSITIVE-FIXNUM) answers.
4807 ** The addition of a method with invalid qualifiers to a generic
4808 function does not cause an error to be signalled immediately;
4809 a warning is signalled, and the error is generated only on
4810 calling the generic function.
4811 * changed .fasl file version number, in part to add type codes for
4812 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4813 obscure ANSI requirements
4815 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4816 * fixed bug 148: failure to inline-expand a local function left
4817 garbage, confusing the compiler.
4818 * fixed bugs 3cd: structure slot readers perform type check if the
4819 slot can have an invalid value (i.e. it is either not initialized
4820 or can be written with a less specific slot writer).
4821 * bug fix: the compiler now traps array references to elements off
4822 the end of an array; previously, the bounds checking in some
4823 circumstances could go off-by-one.
4824 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4826 * type declarations for array element types now obey the description
4827 on the CLHS page "Declaration TYPE", as per discussions on
4828 sbcl-help around 2003-05-08. This means that a declaration
4829 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4830 declaration, all references to BAR will be asserted or assumed
4831 (with THE, so dependent on compiler policy) to involve objects of
4832 type FOO. Note that no such declaration is implied in
4833 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4834 * declared types of functions from the "Conditions"
4835 chapter. (reported by Paul Dietz)
4836 * bug fix: CERROR accepts a function as its first argument.
4837 * bug fix: NTH an NTHCDR accept a bignum as index
4838 arguments. (reported by Adam Warner)
4839 * optimization: character compare routines now optimize comparing
4840 against a constant character. (reported by Gilbert Baumann)
4841 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4842 argument now works properly on the MIPS platform.
4843 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4844 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4845 declared to have a functional type, does not cause an error
4847 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4848 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4849 * fixed bug: if last continuation of a deleted block has a
4850 destination, this destination should be deleted too. (reported by
4852 * fixed a bug in the bootstrap process: the host compiler's values
4853 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4854 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4855 test case from Patrik Nordebo)
4856 * improved the ability of the disassembler on the PPC platform to
4857 provide helpful disassembly notes.
4858 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4859 the class in more cases than previously.
4860 * bug fix: FILE-POSITION now understands :START and :END for
4861 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4862 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4863 8) data. (thanks to David Lichteblau)
4864 * bug fix: it is possible to add a method to a generic function
4865 without lambda list.
4866 * bug fix: reader failed to signal END-OF-FILE inside an
4867 object representation. (reported by Nikodemus Siivola)
4868 * fixed some bugs revealed by Paul Dietz' test suite:
4869 ** LAST and [N]BUTLAST should accept a bignum.
4870 ** condition slot accessors are methods.
4871 ** (VECTOR NIL) is a subtype of STRING.
4873 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4874 * minor incompatible change: some nonsensical specialized lambda
4875 lists (used in DEFMETHOD) which were previously ignored now signal
4877 * minor incompatible change: the system is now aware of the types of
4878 variables in the COMMON-LISP package, and will signal errors for
4879 most violations of these type constraints (where previously they
4880 were silently accepted).
4881 * minor incompatible change: COMPILE-FILE now uses the freedom
4882 afforded (ANSI 3.2.2.3) to use derived function types for
4883 functions defined in the same file. This also permits the system
4884 to warn on static type mismatches and function
4885 redefinition. (Currently it does not work with high DEBUG level.)
4886 * minor incompatible change: VALUES declaration is disabled.
4887 * When issuing notes, the compiler now signals a condition of type
4888 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4889 restart for use in user handlers. It is expected that the
4890 COMPILER-NOTE condition will eventually become a condition
4891 supertype to a hierarchy of note types, which will then be
4892 handleable in a similar fashion. However, at the moment, no such
4893 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4894 but it's an implementation detail, not a classification for the
4896 * Changes in type checking closed the following bugs:
4897 ** type checking of unused values (192b, 194d, 203);
4898 ** template selection based on unsafe type assertions (192c, 236);
4899 ** type checking in branches (194bc).
4900 * A short form of VALUES type specifier has ANSI meaning (it has
4901 increased the number of situations when SBCL cannot perform type
4903 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4904 keywords or constants is permissible.
4905 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4906 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4907 classes. (thanks to Antonio Martinez)
4908 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4909 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4910 argument to a pretty-print stream. Instead, it leaves any such
4911 operations to DESCRIBE-OBJECT methods.
4912 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4914 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4915 lambda lists. (thanks to David Lichteblau)
4916 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4917 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4918 (thanks to Gerd Moellmann)
4919 * fixed bug 246: increased compilation speed of long
4920 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4922 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4924 * DEFCONSTANT now throws a condition of type
4925 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4926 constant to a non-EQL value; CONTINUE and ABORT restarts
4927 respectively change and preserve the value.
4928 * fixed bug 63: The code walker, part of the implementation of CLOS,
4929 is now better at handling symbol macros.
4930 * bug fix: There is no longer an internal implementation type named
4931 CL:LENGTH. (reported by Raymond Toy)
4932 * bug fix: In macro-like defining macros/special operators the
4933 implicit block does not enclose the lambda list.
4934 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4935 enclosed in parentheses) are not suitable as type specifiers, and
4936 their use properly signals an error now.
4937 * bug fix: An argument count mismatch for a type specifier in code
4938 being compiled no longer causes an unhandled error at compile
4939 time, but signals a compile-time warning.
4940 * fixed simple vector readable printing
4941 * bug fix: DESCRIBE takes more care over whether the class
4942 precedence list slot of a class is bound before accessing it.
4943 (reported by Markus Krummenacker)
4944 * bug fix: FORMATTER can successfully compile pretty-printer format
4945 strings which use variants of the ~* directive inside.
4946 * bug fix: SEARCH now applies its TEST predicate to the elements of
4947 the arguments in the correct order. (thanks to Wolfhard Buss)
4948 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4949 in type inference. (thanks to Robert E. Brown)
4950 * bug fix: Reading in symbols with an explicit package name of ""
4951 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4952 * fixed some bugs revealed by Paul Dietz' test suite:
4953 ** NIL is now allowed as a structure slot name.
4954 ** Arbitrary numbers, not just REALs, are allowed in certain
4955 circumstances in LOOP for-as-arithmetic clauses.
4956 ** Multiple class redefinitions before slot access no longer
4957 causes a type error.
4958 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4959 association between the name and a class.
4960 ** Generic functions with non-standard method-combination and over
4961 five methods all of which return constants no longer return NIL
4962 after the first few invocations. (thanks to Gerd Moellmann)
4963 ** CALL-NEXT-METHOD with no arguments now passes the original
4964 values of the arguments, even in the presence of assignment.
4965 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4967 ** DISASSEMBLE works with closures and funcallable instances.
4968 ** ADD-METHOD now returns the generic function, not the new method.
4969 ** FIND-METHOD signals an error if the lengths of the specializers
4970 is incompatible with the generic function, even if the ERRORP
4972 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4973 which its argument is a member.
4974 ** DEFCLASS only redefines the class named by its class-name
4975 argument if that name is the proper name of the class;
4976 otherwise, it creates a new class.
4977 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4978 of the UNBOUND-SLOT condition to the name of the slot.
4979 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4980 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4981 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4982 SLOT-MAKUNBOUND in the specified fashion.
4984 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4985 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4986 cross-compilation host. As a consequence, we can now bootstrap our
4987 way up to SBCL starting with a bare gcc toolchain and human-readable
4988 source code (first the source to CLISP, then the source to SBCL).
4989 * A contributed module containing a partial implementation of the
4990 simple-streams interface has been included. (thanks to Rudi
4992 * A contributed module implementing the RFC1321 Message Digest
4993 Algorithm, known as MD5, has been included.
4994 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4995 no longer has any effect, as the code controlled by this feature
4996 has been deleted. (As far as we know, no-one has ever built using
4997 this feature, and its semantics were confused in any case).
4998 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4999 work on conditions (as required by the ANSI specification),
5000 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5001 expected behaviour on conditions. Users should note, however,
5002 that such behaviour is not required by the ANSI specification,
5003 and so use of this behaviour may render their code unportable.
5004 * fixed some bugs revealed by Paul Dietz' test suite:
5005 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5007 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5008 ** SXHASH on condition objects no longer returns NIL.
5009 ** :ALLOCATION :CLASS slots are better treated; their values are
5010 updated on class redefinition, and initforms inherited from
5011 superclasses are applied.
5012 ** REMOVE-METHOD returns its generic function argument even when
5013 no method was removed.
5014 ** SHARED-INITIALIZE now initializes the values of the requested
5015 slots, including those with :ALLOCATION :CLASS.
5016 ** ALLOCATE-INSTANCE now works on structure classes defined via
5017 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5019 ** SLOT-EXISTS-P now works on conditions, as well as structures
5021 ** MAKE-LOAD-FORM now has the required methods on
5022 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5023 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5024 keyword, and now implements the SLOT-NAMES argument.
5025 ** methods with &OPTIONAL arguments no longer allow too many
5026 arguments to be passed in the call without error.
5027 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5028 option is consistent with the required arguments of the generic
5029 function lambda list.
5030 * bug fix: REQUIRE accepts a string designator. (Thanks to
5032 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5033 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5034 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5035 * bug fix: The compiler now checks for duplicated variables in macro
5037 * bug fix: SETQ on globals returns the correct value.
5038 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5039 not a COMPILER-ERROR (followed by some other strange error on
5040 choosing the CONTINUE restart).
5041 * bug fix: make.sh and friends are now more consistent in the way that
5042 they look for GNU "make".
5044 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5045 * experimental native threads support (on x86 Linux >=2.4 only).
5046 This is not compiled in by default: you need to add :SB-THREAD to
5047 the target features. See the "Beyond ANSI" chapter of the manual
5049 * fix for longstanding nonANSIism: The old distinction between
5050 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5051 The return value from CL:FIND-CLASS is now a CLOS class, and
5052 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5053 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5054 * An interface to the MetaObject Protocol, as described in Kiczales,
5055 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5056 MIT Press, 1991, is available from the SB-MOP package.
5057 * incompatible change: the SB-PCL package should now be considered
5058 a private implementation detail, and no longer a semi-private MOP
5060 * minor incompatible change: due to rearrangement for threads, the
5061 control stack and binding stack are now allocated at arbitrary
5062 addresses instead of being hardcoded per-port. Users affected by
5063 this probably have to be doing advanced things with shared
5064 libraries, and will know who they are.
5065 * minor incompatible change: Previously, all --eval forms used were
5066 processed with READ before any of them were processed with EVAL.
5067 Now each --eval form is processed with both READ and EVAL before
5068 the next --eval form is processed. (Thus package operations like
5069 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5070 work as the user might reasonably expect.)
5071 * minor incompatible change: *STANDARD-INPUT* is now only an
5072 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5074 * minor incompatible change: Y-OR-N-P is now character-oriented,
5075 not line oriented. Also, YES-OR-NO-P now works without errors.
5076 (thanks to Antonio Martinez)
5077 * sb-aclrepl module improvements: an integrated inspector, added
5078 repl features, and a bug fix to :trace command.
5079 * Known functions, which cannot be open coded by the backend, are
5080 considered to be able to check types of their arguments. (fixing
5081 a bug report by Nathan J. Froyd)
5082 * fixed a bug in computing method discriminating functions: It is
5083 now possible to define methods specialized on classes which have
5084 forward-referenced superclasses. (thanks to Gerd Moellmann)
5085 * fixed evaluation order in optional entries (reported by Gilbert
5087 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5088 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5089 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5090 required-by-AMOP NAME argument, as well as CLASS and
5091 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5092 * fixed bug 20: DEFMETHOD can define methods using names that are
5093 not the proper names of classes to designate class specializers.
5094 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5095 Unix file descriptors, instead of blowing up. (thanks to Antonio
5097 * Garbage collection refactoring: user-visible change is that a
5098 call to the GC function during WITHOUT-GCING will not do garbage
5099 collection until the end of the WITHOUT-GCING. If you were doing
5100 this you were probably losing anyway.
5101 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5102 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5103 TYPEP the latter but not the former.
5104 * The compiler issues a full WARNING for calls to undefined functions
5105 with names from the CL package.
5106 * MAP-INTO for a vector destination is open coded. (reported by
5107 Brian Downing on c.l.l)
5108 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5109 documentation string.
5110 * fixed some bugs revealed by Paul Dietz' test suite:
5111 ** COPY-ALIST now signals an error if its argument is a dotted
5113 ** Condition slots are now accessed more correctly in the presence
5114 of multiple initargs for a given slot.
5115 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5116 exclude restarts of the same name associated with a different
5118 ** DEFCLASS of forward-referenced classes with another
5119 forward-referenced class in the superclasses list no longer
5121 ** Condition slots are now initialized once each, not multiple
5122 times. (thanks to Gerd Moellmann)
5123 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5125 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5126 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5127 arguments contain duplicated elements.
5128 ** RESTART-CASE understands local macros.
5129 ** RESTART-CASE associates exactly its own restarts with a condition.
5130 ** ENDP in safe mode checks its argument to be of type LIST.
5131 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5132 in question is unbound.
5133 ** Optimized MAKE-INSTANCE functions no longer cause internal
5134 assertion failures in the presence of duplicate initargs.
5135 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5136 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5137 propagated even in the ctor optimized implementation of
5139 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5141 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5142 * a better implementation of SXHASH on (simple) bit vectors,
5143 measured both in execution speed and in distribution of results
5144 over the positive fixnums, has been installed. Likewise, a better
5145 implementation of EQUAL for simple bit vectors is now available.
5146 * fixed CEILING optimization for a divisor of form 2^k.
5147 * fixed bug 240 (emitting extra style warnings "using the lexical
5148 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5149 by Antonio Martinez)
5150 * fixed SXHASH, giving different results for NIL depending on type
5151 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
5152 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
5153 variable. (found by Rolf Wester)
5154 * SBCL does not ignore type declarations for special
5155 variables. (reported by rif on c.l.l 2003-03-05)
5156 * some bug fixes in contrib/sb-aclrepl/
5157 * fixed some bugs revealed by Paul Dietz' test suite:
5158 ** a bug in the CONS type specifier, whereby the CAR and CDR
5159 types got intertwined, has been fixed;
5160 ** the type system is now able to reason about the interaction
5161 between INTEGER and RATIO types more completely;
5162 ** APPEND, [N]REVERSE and NRECONC check that those their
5163 arguments, which must be proper lists, are really so;
5164 ** An array specialized to be unable to hold elements has been
5165 implemented, as required -- yes, really -- by ANSI;
5166 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5167 on malformed property lists;
5169 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5170 * incompatible packaging change: in line with Unix convention,
5171 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5172 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5173 * REQUIRE and PROVIDE are now optionally capable of doing something
5174 useful. See the documentation string for REQUIRE.
5175 * infrastructure for a managed SBCL contrib system: contributed
5176 modules in this release include:
5177 ** the ASDF system definition facility;
5178 ** an interface to the BSD Sockets API;
5179 ** an ACL-like convenience interface to the repl;
5180 (thanks to Kevin Rosenberg)
5181 ** an implementation of ROTATE-BYTE, with efficient implementation
5183 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5184 gives a closer approximation to the right answer than previously.
5185 (thanks to Raymond Toy)
5186 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5187 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5188 optional environment arguments, as required by ANSI.
5189 * fixed bugs in other functions taking environment objects, allowing
5190 calls with an explicit NIL environment argument to be compiled
5192 * fixed bug 228: primary return values from
5193 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5194 COMPILE or FUNCTION.
5195 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5196 :TYPE will no longer signal errors on innocuous objects.
5197 * fixed bug 231b: SETQ is better at respecting type declarations in
5198 the lexical environment.
5199 * fixed a bug in DEFCLASS: classes named by symbols with no or
5200 unprintable packages can now be defined.
5201 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5202 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5203 * fixed compiler failure related to checking types of functions.
5204 (reported by Robert E. Brown)
5205 * the compiler is now much more consistent in its error-checking
5206 treatment of bounding index arguments to sequence functions: in
5207 (SAFETY 3) code, errors will be signalled in almost all cases if
5208 invalid sequence bounding indices are passed to functions defined
5209 by ANSI to operate on sequences.
5210 * fixed a bug in the build procedure: documentation of SBCL-specific
5211 packages is now preserved and available in the final Lisp image.
5212 * lifted FDEFINITION lookup out of loops in the implementation of
5213 many list operations. (thanks to Robert E. Brown)
5214 * fixed a bug in the reader: the #n# reader macro now works for
5215 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5216 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5217 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5218 E. Brown and Tony Martinez respectively)
5219 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5220 SLOT-BOUNDP: in particular, it is now able to optimize them much
5221 better, and is now not vulnerable to having packages renamed.
5222 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5223 always called when a slot is not present in an instance. (thanks
5225 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5226 longer signal an error on unreading a character following EOF on
5227 the previous constituent stream. (thanks to Tony Martinez)
5228 * fixed some bugs revealed by Paul Dietz' test suite:
5229 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5230 not just nonnegative fixnums;
5231 ** the logical bit-array operators such as BIT-AND now accept an
5232 explicit NIL for their "opt-arg" argument (to indicate a
5233 freshly-consed result bit-array);
5234 ** ELT now signals an error on an invalid sequence index in safe
5236 ** the type system is now cleverer about negations of numeric
5237 types, and consequently understands the BIGNUM and RATIO types
5239 ** the type system is now cleverer about the interaction between
5240 INTEGER and RATIO types: while bugs still remain, many more
5241 cases are accurately computed;
5242 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5243 if it is in the last clause;
5244 ** CONSTANTLY now correctly returns a side-effect-free function in
5246 ** DECLARE is no longer treated as a special-operator; in
5247 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5248 * incremented fasl file version number due to the change in the
5249 DEFSTRUCT-SLOT-DESCRIPTION structure.
5251 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5252 * minor incompatible change: code processed by the "interpreter" or
5253 EVAL now has a compilation optimization policy of (DEBUG 2)
5254 (changed from (DEBUG 1)) to improve debuggability of interactive
5255 development, and to allow the use of the debug RETURN command in
5257 * an experimental implementation of the RETURN command for the
5258 debugger has been included. (thanks to Frederik Kuivinen)
5259 * fixed bug 62: constraints were not propagated into a loop.
5260 * fixed bug in embedded calls of SORT (reported and investigated by
5262 * fixed some bugs revealed by Paul Dietz' test suite:
5263 ** printing and reading of arrays with some dimensions having
5264 length 0 (thanks to Gerd Moellmann);
5265 ** BOA constructor with &AUX argument without a default value does
5266 not cause a type error;
5267 ** CONSTANTP now returns true for all self-evaluating objects.
5269 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5270 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5271 accessors that are related by inheritance, as specified in the
5272 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5273 Valtteri Vuorikoski)
5274 * The compiler is now able to inline functions that were defined in
5275 a complex lexical environment (e.g. inside a MACROLET).
5276 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5278 * Support for the upcoming FreeBSD-5.0 release has been included.
5279 (thanks to Dag-Erling Smorgrav)
5280 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5281 effect when it is not in a toplevel context.
5282 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5283 stand a better chance of being correct. (thanks to Gerd
5285 * fixed bug in COERCE, which now signals an error on coercing a
5286 rational to a bounded real type which excludes the expected
5288 * The compiler is now able to derive types more accurately from the
5289 COERCE and COMPILE functions.
5290 * fixed bug 223: functional binding is considered to be constant
5291 only for symbols in the CL package.
5292 * fixed bug 231: SETQ did not check the type of a variable being set
5293 (reported by Robert E. Brown)
5294 * A new optimization for MAKE-INSTANCE has been included, fixing
5295 various bugs (including relating to :ALLOCATION :CLASS slots and
5296 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5298 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5299 ** As required by ANSI, LOOP now disallows anonymous collection
5300 clauses such as COLLECT I in conjunction with aggregate boolean
5301 clauses such as THEREIS (= I 1);
5302 ** LOOP now signals an error when any variable is reused in the
5303 same loop (including the potentially useful construct analogous
5304 to WITH A = 1 WITH A = (1+ A);
5305 ** IT is only a special loop symbol within the first clause of a
5306 conditional loop clause;
5307 ** LOOP with a typed iteration variable over a hashtable now
5308 signals a type error iff it should.
5309 * fixed some other bugs revealed by Paul Dietz' test suite:
5310 ** FILE-STREAM now names the class previously known as FD-STREAM;
5311 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5312 argument) no longer signals an error;
5313 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5314 of the slot symbol, rather than using the current package
5315 ((:CONC-NAME "") continues to intern the slot's name in the
5317 * incremented fasl file version number, because of the incompatible
5318 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5319 of the new implementation of DEFINE-COMPILER-MACRO.
5321 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5322 * Support for building SBCL for MIPS platforms running in
5323 little-endian mode has now been checked in, and basic
5324 functionality on said platforms verified.
5325 * minor incompatible change: PCL now records the pathname of a file
5326 in which methods and the like are defined, rather than its
5328 * minor incompatible change: TRUENAME now considers the truename of
5329 a file naming a directory to be the pathname with :DIRECTORY
5330 component indicating that directory.
5331 * minor incompatible change: a NAMED clause in the extended form of
5332 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5333 reason for the previous behaviour is unclear.
5334 * more systematization and improvement of CLOS and MOP conformance
5335 in PCL (thanks to Gerd Moellman and Pierre Mai):
5336 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5338 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5339 primary methods with no specializers;
5340 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5342 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5343 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5344 FORWARD-REFERENCED-CLASSes; error reporting on
5345 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5347 ** SXHASH on CLOS instances now uses a slot internal to the
5348 instance to return different numbers on distinct instances,
5349 while preserving the same return value through invocations of
5351 ** DEFMETHOD signals errors when methods with longer incongruent
5352 lambda lists are added to generic functions;
5353 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5354 CLASS, as specified in AMOP;
5355 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5356 on the order returned by the primary method for classes of
5357 class STANDARD-CLASS;
5358 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5359 * fixed some bugs shown by Paul Dietz' test suite:
5360 ** DOLIST puts its body in TAGBODY;
5361 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5363 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5364 value producing form;
5365 ** if more variables are given to PROGV than values, extra
5366 variables are bound and made to have no value;
5367 ** NSUBSTITUTE on list arguments gets the right answer with
5369 ** ELT signals an error of type TYPE-ERROR when the index argument
5370 is not a valid sequence index;
5371 ** LOOP signals (at macroexpansion time) an error of type
5372 PROGRAM-ERROR when duplicate variable names are found;
5373 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5374 ** FUNCALL of special-operators now cause an error of type
5376 ** PSETQ now works as required in the presence of side-effecting
5377 symbol-macro places;
5378 ** NCONC accepts any object as its last argument;
5379 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5381 ** loop-for-as-package does not require a package to be explicitely
5383 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5385 * fixed bug 166: compiler preserves "there is a way to go"
5386 invariant when deleting code.
5387 * fixed bug 172: macro lambda lists with required arguments after
5388 &REST arguments now cause an error to be signalled. (thanks to
5390 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5391 bug. (thanks to Matthew Danish)
5392 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5394 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5395 arguments are lexically rebound. (thanks to Gerd Moellmann and
5397 * fixed bug 194: error messages are now more informative when there
5398 is no primary method applicable in a call to a generic
5399 function. (thanks to Gerd Moellmann)
5400 * fixed bug in command line argument checking (thanks to Julian
5402 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5403 (thanks to Matthew Danish)
5404 * incremented fasl file version number, because of the
5405 SXHASH-related changes in the layout of CLOS data structures
5407 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5408 * minor incompatible change: The runtime (the Unix executable named
5409 "sbcl") is now much pickier about the .core files it will load.
5410 Essentially it now requires .core files to descend from the same
5411 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5412 as the runtime does. (The intent is to prevent the crashes which
5413 can occur, and which can even be reported as mysterious failures,
5414 when people patch the sources or change the build parameters
5415 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5416 sbcl and .core files.)
5417 * fixed bug: VALUES-LIST is no longer optimized away.
5418 * fixed bug 142: The FFI conversion of C string values to Lisp
5419 string values no longer conses excessively. (thanks to Nathan
5420 Froyd porting Raymond Toy's fix to CMU CL)
5421 * began to systematize and improve MOP conformance in PCL (thanks to
5422 Nathan Froyd, Gerd Moellman and Pierre Mai):
5423 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5425 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5426 ** FINALIZE-INHERITANCE is now called on class finalization;
5427 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5428 argument precedence order.
5429 * fixed bug 202: The compiler no longer fails on functions whose
5430 derived types contradict their declared type.
5431 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5432 so it can be non-toplevel.
5433 * The fasl file version number has changed (because of the new
5434 implementation of DEFMACRO).
5435 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5436 safe code, that any length requirement by their type-specifier
5437 argument is valid. The exceptions to this are described in bug
5439 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5440 functions now check the types of their inputs as required by ANSI.
5441 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5442 introduced symbol is DECLAREd to be SPECIAL.
5443 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5444 * fixed bug: :COUNT argument to sequence functions may be negative
5445 * fixed bug: body of DO-SYMBOLS may contain declarations
5446 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5447 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5448 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5449 symbol macro only once
5450 * fixed printing of call frame when argument list is unavailable
5451 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5452 * compiler no longer signals WARNING on unknown keyword
5455 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5456 * A beta-quality port to the mips architecture running Linux,
5457 based on the old CMUCL backend, has been made. It has been tested
5458 on a big-endian kernel, and works sufficiently well to be able to
5459 rebuild itself; it has not been tested in little-endian mode.
5460 * fixed an inconsistency between gencgc.c and purify.c which made
5461 dumping/loading .core files unreliable
5462 * fixed bug 120a: The compiler now deals correctly with IFs where
5463 the consequent is the same as the alternative, instead of
5464 misderiving the return type. (thanks to Alexey Dejneka)
5465 * fixed bug 113: Logical pathnames are now dumpable (the logical
5466 host is resolved at load-time, throwing an error if it is not
5468 * fixed bug 174: FORMAT's error message is slightly clearer when a
5469 non-printing character is used in a format directive.
5470 * fixed several bugs in compiler checking of type declarations, i.e.
5471 violations of the Python "declarations are assertions" principle
5472 (thanks to Alexey Dejneka)
5473 * fixed several bugs in PCL's error checking (thanks to Gerd
5475 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5477 * fixed bug in compilation of functions as first class values
5478 (thanks to Antonio Martinez-Shotton)
5479 * The compiler's handling TYPE-ERRORs which it can prove will
5480 inevitably happen at runtime has been cleaned up and corrected
5481 in several ways. (thanks to Alexey Dejneka)
5482 * improved argument type checking for various basic arithmetic
5483 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5484 lavished on them in the past that they can be compiled in many
5485 ways in different special cases
5486 * fixed bug 181: compiler checks validity of user supplied type
5488 * cleaned up code flushing in optimization: Function calls which
5489 should signal errors for safety purposes (e.g. which ANSI says
5490 should signal errors when their arguments are of incorrect type)
5491 are no longer optimized away.
5492 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5493 * incremented fasl file version number, because changes in the
5494 implementation of sequence functions like COERCE caused
5495 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5496 in old inline expansions) to become undefined. (Actually these
5497 changes were later undone, so we might very well be binary
5498 compatible with 0.7.7 after all, but leaving the version number
5499 incremented seemed like the simplest and most conservative
5502 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5503 * An alpha-quality port to the parisc architecture running Linux,
5504 based on the old CMUCL backend, has been made. This, even more so
5505 than the other backends, should be considered still a work in
5506 progress; known problems include that the Linux kernel in 64-bit
5507 mode does not propagate the correct sigcontext structure to
5508 userspace, and consequently SBCL on a parisc64 kernel will not
5510 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5511 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5512 suppressed.) Also now that the compiler is looking at declarations
5513 in the environment, it checks optimization declarations as well,
5514 and suppresses inlining when (> DEBUG SPEED).
5515 * More fixes have been made to treatment of floating point exception
5516 treatment and other Unix signals. In particular, floating point
5517 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5518 * The detection and handling of control stack exhaustion (infinite
5519 or very deeply nested recursion) has changed. Stack exhaustion
5520 detection is now done by write-protecting pages at the OS level
5521 and applies at all optimization settings; when found, a
5522 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5523 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5524 be caught using IGNORE-ERRORS.
5525 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5526 correctly when transforming recursive LABELS functions to LETs.
5527 (thanks to Alexey Dejneka)
5528 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5529 that are names of constants or global variables.
5530 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5531 alien routines with docstrings.
5532 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5533 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5535 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5536 (thanks to Eric Marsden)
5537 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5538 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5539 * Bug fix: The SPARC backend can now compile functions involving
5540 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5541 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5542 to a functions expecting a PATHNAME-DESIGNATOR.
5543 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5544 lambda lists. (thanks to Alexey Dejneka)
5545 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5546 functions so that EXPORTing the name of the class doesn't cause
5547 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5548 to Antonio Martinez for reporting this)
5549 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5550 constant-folded without failing an assertion. (thanks to Einar
5551 Floystad Dorum for reporting this)
5552 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5553 types are now dealt with more correctly by the compiler.
5554 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5555 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5556 behaviour analogous to RENAME-FILE. This puts its behaviour more
5557 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5559 * The fasl file version number has changed again. (because of the
5560 bug fix involving the names of PCL MAKE-INSTANCE functions)
5562 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5563 * bug fix: Floating point exceptions are treated much more
5564 consistently on the x86/Linux and PPC/Linux platforms.
5565 * Array initialization with :INITIAL-ELEMENT is now much faster for
5566 cases when the compiler cannot open code the array creation, but
5567 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5568 array accesses have also seen a speed increase.
5569 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5570 specified. (This was at the root of some bad interactions between
5571 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5573 * bug fix: Internal error arguments for undefined functions are now
5574 computed correctly on the PPC/Linux platform.
5575 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5576 Raymond Toy's patch for CMU CL)
5577 * Support for the Solaris 9 operating environment has been included
5578 (thanks to Daniel Merritt)
5579 * A very ugly but hopefully complete draft of the missing FFI chapter
5580 of the manual has been created by reformatting the corresponding
5581 CMU CL manual chapter into (currently very ugly and incoherent)
5582 DocBook and bringing it up to date for SBCL behavior. Thus, the
5583 manual is now essentially complete, at least by my extreme
5584 once-and-only-once standards, whereby it's acceptable to refer to
5585 the doc strings of SB-EXT functions as the primary documentation.
5586 * The fasl file version number has changed again, due to cleanup of
5587 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5588 is no longer a static symbol.)
5590 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5591 * SBCL now builds with OpenMCL (version 0.12) as the
5592 cross-compilation host; also, more progress has been made toward
5593 bootstrapping under CLISP.
5594 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5596 * bug 158 fixed: The compiler can now deal with integer loop
5597 increments different from 1; fixing this turned out also to fix
5599 * bug 169 fixed: no more bogus warnings about using lexical bindings
5600 despite the presence of perfectly good SPECIAL declarations (thanks
5601 to David Lichteblau)
5602 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5603 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5604 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5606 * bug 180 fixed: Method combination specifications no longer ignore
5607 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5608 * bug fix: Structure type predicate functions now check their argument
5609 count as they should.
5610 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5611 correctly. (thanks to Pierre Mai)
5612 * minor incompatible change: The --noprogrammer option is deprecated
5613 in favor of the new --disable-debugger option, which is very similar.
5614 (The major difference is that it takes effect at a slightly different
5615 time at startup, causing handling of errors in --sysinit and
5616 --userinit files will be affected differently.) The
5617 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5618 been added to allow this functionality to be controlled from ordinary
5619 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5620 maintainers, who might want to run non-interactive scripts to
5621 build SBCL cores which will later be used interactively.)
5622 * minor incompatible change: The LOAD function no longer, when given
5623 a wild pathname to load, loads all files matching that pathname.
5624 Instead, an error of type FILE-ERROR is signalled.
5626 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5627 * bug 147 fixed: The compiler preserves its block link/count
5628 invariants more correctly now so that it doesn't crash. (thanks
5630 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5632 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5633 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5634 no-value-for-this-character as NIL (as specified by ANSI).
5635 * HOST-NAMESTRING on physical pathnames now returns a string that is
5636 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5637 (thanks to Christophe Rhodes)
5638 * The Alpha port handles icache flushing more correctly. (thanks to
5640 * More progress has been made toward bootstrapping under CLISP. (thanks
5641 to Christophe Rhodes)
5642 * The fasl file format has changed again, because dynamic loading
5643 on OpenBSD (which has non-ELF object files) motivated some cleanups
5644 in the way that foreign symbols are transformed and passed around.
5645 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5646 is no longer treated as whitespace by the reader, but instead as
5647 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5648 |A
\7fB|, instead of A as it used to.
5650 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5651 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5652 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5653 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5654 this as of 0.7.1.45, but was left out of the previous news section
5655 (thanks to Dan Barlow)
5656 * SBCL now runs on the Solaris operating system on SPARC architectures
5657 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5658 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5659 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5660 * SPARC backend cleanups, allowing builds of cores optimized for V8
5661 and V9 SPARCS, and also emission of code targeted to a particular
5662 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5664 * SBCL is closer to bootstrapping under CLISP, thanks to various
5665 fixes by Christophe Rhodes.
5666 * The fasl file format has changed again, to allow the compiler's
5667 INFO database to support symbol macros.
5668 * The user manual (in doc/) is formatted into HTML more nicely.
5669 (thanks to coreythomas)
5670 * The system is smarter about SUBTYPEP relationships, especially
5671 those involving NOT types (including types such as ATOM which are
5672 represented internally using NOT types). Thus SUBTYPEP is less
5673 likely to return (VALUES NIL NIL) in general, and in particular
5674 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5676 * The fasl file format has changed again, because the internal
5677 representation of types now includes a new slot to support the new
5678 SUBTYPEP-of-NOT-types logic.
5679 * (not a change in the main branch of SBCL, but a related prototype
5680 which can hopefully be merged into the main branch of SBCL in the
5681 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5682 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5683 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5684 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5685 dispatch macro character combinations. (thanks to Alexey Dejneka)
5686 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5687 that superficially look like logical namestrings correctly.
5688 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5690 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5691 default supplied-p) for &optional and &key arguments. (thanks to
5694 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5695 * incompatible change: The compiler is now less aggressive about
5696 tail call optimization, doing it only when (> SPACE DEBUG) or
5697 (> SPEED DEBUG). (This is an incompatible change because there are
5698 programs which relied on the old CMU-CL-style behavior to optimize
5699 away their unbounded recursion which will now die of stack overflow.)
5700 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5701 for non-GENCGC systems has been increased to 20M (since that
5702 seems much closer to the likely performance optimum for modern
5703 systems than the old 4M value was)
5704 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5705 and *DEBUG-PRINT-LEVEL*
5706 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5707 of CMU CL's support for SPARC, and various endianness and other
5708 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5709 * new syntactic sugar for the Unix command line: --load foo.bar is now
5710 an alternate notation for --eval '(load "foo.bar")'.
5712 ** The system now detects stack overflow and handles it gracefully,
5713 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5714 optimization settings. (This is a good thing in general, and
5715 its introduction in this version should be particularly timely
5716 for anyone whose code fails because of suppression of tail
5718 ** The system now hunts for the C variable "environ" in a more
5719 devious way, to avoid segfaults when the C library version differs
5720 between compile time and run time. (thanks to Christophe Rhodes)
5721 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5722 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5723 ** The compiler no longer issues bogus style warnings for undefined
5724 classes in the same source file as the DEFCLASSes which defined
5725 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5727 ** fixes in CONDITION class precedence list for undefined function
5728 errors (thanks to Alexei Dejneka)
5729 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5730 correctly. (thanks to Dan Barlow)
5731 ** portability fixes aiming at bootstrapping under CLISP (thanks
5732 to Dave McDonald and Christophe Rhodes)
5733 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5734 ** fixes in type translation and and type inference (thanks to
5736 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5737 ** various fixes in the new ports (thanks to Dan Barlow)
5738 * several changes related to debugging:
5739 ** suppression of tail recursion, as noted above
5740 ** stack overflow detection, as noted above
5741 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5742 is now the default. (For some time encapsulation has been more
5743 reliable than the breakpoint-based :ENCAPSULATE NIL
5744 implementation, at least on X86 systems; and I just noticed that
5745 encapsulation also seems closer to the spirit of the ANSI
5748 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5750 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5751 up properly again. (There was a packaging bug in 0.7.0 which
5752 left their definitions in SB-SYS::LOAD-FOREIGN and
5753 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5754 vital for most things which interface to C-level interfaces,
5755 like extensions working with sockets or databases or
5756 Perl-compatible regexes or whatever, and the need to fix
5757 this bug is the main reason that 0.7.1 was released so
5759 ** DEFGENERIC is now choosier about the methods it redefines, so that
5760 reLOADing a previously-LOADed file containing DEFGENERICs does
5761 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5762 cycle now works as it should. (thanks to Alexey Dejneka)
5763 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5764 fixed by Christophe Rhodes. (He actually submitted this patch
5765 months ago, and I delayed until after 0.7.0.)
5766 ** Bug 111 (internal compiler confusion about runtime checks on
5767 FUNCTION types) was fixed by Alexey Dejneka.
5768 * Some internal cleanups (getting rid of variables which aren't
5769 needed now that the byte interpreter is gone) caused the fasl
5770 file format number to change again.
5772 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5773 * major incompatible change: The default fasl file extension, i.e. the
5774 default extension for files produced by COMPILE-FILE, has changed
5775 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5777 ** There are many changes in the implementation of the compiler.
5778 SBCL is now essentially a compiler-only implementation of ANSI
5779 Common Lisp. EVAL still "interprets" a few special cases, but
5780 almost all the interesting cases are handled by creating
5781 a LAMBDA expression, calling COMPILE on it, then calling
5782 FUNCALL on the result.
5783 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5784 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5785 Since the code is newer, there might still be some new bugs
5786 (though not as many as before Martin Atzmueller's fixes:-). But
5787 the new code is substantially simpler and clearer, and hopefully
5788 any remaining bugs will be simpler, less fundamental, and more
5789 fixable then the bugs in the old code.
5790 ** The revised compiler is still a little unsteady on its feet.
5792 *** The debugging information it produces (particularly the names
5793 of FUNCTION objects) is sometimes much less useful than what
5794 the old compiler produced.
5795 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5796 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5797 within a MACROLET) has been temporarily weakened.
5798 ** There are new compiler optimizations for various functions:
5799 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5800 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5801 *** the math functions TRUNCATE, FLOOR, and CEILING
5802 *** the function-of-all-trades COERCE
5803 Mostly these should be transparent, but there's one
5804 potentially-annoying problem (bug 117): when the compiler
5805 inline-expands a function and does type analysis on the result,
5806 it can create control paths which have type mismatches, and
5807 when it can't prove that those control paths aren't taken,
5808 it will issue WARNINGs about the type mismatches. This is
5809 a particular problem in practice for the new sequence functions.
5810 It's not clear how this should be fixed, and for now, a
5811 workaround is given in the entry for 117 in the BUGS file.
5812 ** (Because of the interaction between the two previous items --
5813 occasional inlining problems and new inline expansions -- some
5814 of the new sequence function optimizations won't really kick in
5815 completely until debugging information, and then inlining, are
5816 straightened out in some future version.)
5817 * minor incompatible changes:
5818 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5819 DIRECTORY no longer implicitly promotes NIL slots of its
5820 pathname argument to :WILD. In particular, when you ask for the
5821 contents of a directory (which you used to be able to do without
5822 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5823 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5824 ** changes in behavior that ANSI explicitly defines to be
5825 implementation dependent:
5826 *** The new compiler-only implementation still conforms with ANSI,
5827 but acts a little different than before. Besides the obvious
5828 changes in performance tradeoffs (that the cost per form passed
5829 to EVAL has gone up, and the cost per form executed by EVAL
5830 has gone down), the behavior of the system changes a little
5831 because there are no longer any interpreted function objects.
5832 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5833 e.g. doing COMPILE on the output of interactive DEFUN is
5835 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5837 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5838 has changed from (:CL) to NIL.
5839 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5840 e.g. #\Newline and #\Tab, don't have names specified in the
5841 ANSI Common Lisp standard, is now based on their ASCII symbolic
5842 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5843 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5844 are no longer used for output.
5845 ** changes in internal implementation constants:
5846 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5847 4 million. (If your application spends a lot of time GCing and
5848 you have a lot of RAM, you might want to experiment with
5849 increasing it even more.)
5850 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5851 However, almost all old code should still continue to work without
5852 immediate update, as SB-C-CALL is now a (deprecated) nickname
5854 ** Old operator names in the style DEF-FOO are now deprecated in
5855 favor of new corresponding names DEFINE-FOO, for consistency with
5856 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5857 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5858 internal symbols, but a few supported extensions like
5859 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5860 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5861 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5862 etc. as you get deeper into recursive calls to the debugger
5863 command loop, instead of the old "5]", "5]]", "5]]]"
5864 sequence. (I was motivated to do this when squabbles between
5865 ILISP and SBCL left me very deeply nested in the debugger. In the
5866 short term, this change will probably provoke more ILISP/SBCL
5867 squabbles, but hopefully it will be an improvement in the long run.)
5868 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5869 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5870 function, since declaiming return types involving aliens is
5871 (1) annoyingly messy to do by hand and (2) vital to efficient
5872 compilation of code which calls such functions.
5873 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5874 longer reexported by the SB-EXT package. They're solely useful
5875 for alien code, so it seems more logical that you should get
5876 them from the SB-ALIEN package, not in SB-EXT.
5877 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5878 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5879 features. Instead, the code that they used to control is always
5880 built into the system.
5881 * many other bug fixes
5882 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5883 advantage of the new EVAL-WHEN stuff and to clean them up in
5884 general, and they are now more ANSI-compliant in a number of
5885 ways. Martin Atzmueller is responsible for a lot of this.
5886 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5888 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5889 *** correct ERROR type for various file operations
5890 *** some fixes for Lisp streams
5891 *** DEFMETHOD syntax checking
5892 *** changing old weird representation of debug information as
5893 strings (which, among their other deficiencies, don't transform
5894 correctly when you rename packages, and don't change their
5895 print representation when you change things like *PACKAGE*
5896 and *PRINT-LENGTH*) to symbols and lists of symbols
5897 He also made several improvements and fixed several bugs in DESCRIBE.
5898 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5900 *** misbehavior of WRITE-STRING/WRITE-LINE
5901 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5902 and several other LOOP problems as well
5903 *** DIRECTORY when similar filenames are present
5904 *** DEFGENERIC with :METHOD options
5905 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5906 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5907 *** argument ordering in FIND with :TEST option
5908 *** mishandled package designator argument in APROPOS-LIST
5909 *** various problems in the backquote readmacro
5910 *** a bug in APROPOS
5911 *** probably some others that I'm not describing very well here,
5912 since the CVS log documents them by reference to sbcl-devel
5913 messages, and the SourceForge archives aren't working well.:-(
5914 ** Dan Barlow improved the Alpha port (and is making progress on the
5915 PPC port, for those of you who think different).
5916 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5917 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5918 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5919 continues to work on the SPARC port (for those of you in a position
5920 to look down upon our little PC-compatible boxes from a great height).
5921 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5922 and uses that copy, rather than the current dynamic value, when
5923 it's trying to decide whether to truncate output. Thus e.g.
5924 (let ((*print-lines* 50))
5925 (pprint-logical-block (stream nil)
5927 (let ((*print-lines* 8))
5928 (print (aref possiblybigthings i) stream)))))
5929 should now truncate the logical block only at 50 lines, instead of
5930 often truncating it at 8 lines, as it did before.
5931 * The doc/cmucl/ directory, containing old CMU CL documentation
5932 from the time of the fork, is no longer part of the base system.
5933 SourceForge has shut down its anonymous FTP service, and with it
5934 my original plan for distributing the old CMU CL documentation
5935 there. For now, if you need these files you can download an old
5936 SBCL source release and extract them from it.
5937 * The fasl file version number changed again, for dozens of reasons,
5938 some of which are apparent above.
5940 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5941 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5942 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5943 patch, so that DISASSEMBLE output is much nicer.
5944 * The code in the SB-PROFILE package now seems reasonably stable.
5945 I still haven't decided what the final interface should look like
5946 (I'd like PROFILE to interact cleanly with TRACE, since both
5947 facilities use function encapsulation) but if you have a need
5948 for profiling now, you can probably use it successfully with
5949 the current CMU-CL-style interface.
5950 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5951 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5952 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5953 link now returns the dangling link itself, and for similar
5954 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5955 link itself. (In these cases the old code signalled an error and
5956 looped endlessly, respectively.) Thus, DIRECTORY now works even
5957 in the presence of dangling and cyclic symbolic links.
5958 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5959 is now a supported extension again, since the consensus on
5960 sbcl-devel was that it can be useful for ordinary development
5961 work, not just for debugging SBCL itself.
5962 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5963 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5964 that currently-defined functions might be redefined later with
5965 different return types.
5966 * Hash tables can be printed readably, as inspired by CMU CL code
5967 of Eric Marsden and SBCL code of Martin Atzmueller.
5968 * better error handling in CLOS method combination, thanks to
5969 Martin Atzmueller porting Pierre Mai's CMU CL patches
5970 * more overflow fixes for >16Mbyte I/O buffers
5971 * A bug in READ has been fixed, so that now a single Ctrl-D
5972 character suffices to cause end-of-file on character streams.
5973 In particular, now you only need one Ctrl-D at the command
5974 line (not two) to exit SBCL.
5975 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5977 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5978 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5979 does the right thing.
5980 * The implementation of some type tests, especially for CONDITION
5981 types, is now tidier and maybe faster, due to CMU CL code
5982 originally by Douglas Crosher, ported by Martin Atzmueller.
5983 * Some math functions have been fixed, and there are new
5984 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5985 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5986 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5987 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5988 likely to be built into sbcl-0.7.0.)
5989 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5990 CL, ported to SBCL by Martin Atzmueller)
5991 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5992 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5993 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5994 * There's a new slam.sh hack to shorten the edit/compile/debug
5995 cycle for low-level changes to SBCL itself, and a new
5996 :SB-AFTER-XC-CORE target feature to control the generation of
5997 the after-xc.core file needed by slam.sh.
5998 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5999 COMPILE-FILE is no longer supported, so that now every function
6000 gets an entry point, so that block compilation looks a little
6001 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6002 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6003 returns the number of bytes consed since the system started,
6004 rather than the number consed since the first time the function
6005 was called. (The new definition parallels ANSI functions like
6006 CL:GET-INTERNAL-RUN-TIME.)
6007 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6008 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6009 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6010 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6011 * Fasl file version numbers are now independent of the target CPU,
6012 since historically most system changes which required version
6013 number changes have affected all CPUs equally. Similarly,
6014 the byte fasl file version is now equal to the ordinary
6017 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6018 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6019 is no longer recognized. I apologize for this, because it was
6020 listed in SB-EXT as a supported extension, but I found that
6021 its existing behavior was poorly specified, as well as incorrectly
6022 specified, and it looked like too much of a mess to straighten it
6023 out. I have enough on my hands trying to get ANSI stuff to work..
6024 * many patches ported from CMU CL by Martin Atzmueller, with
6025 half a dozen bug fixes in pretty-printing and the debugger, and
6026 half a dozen others elsewhere
6027 * fixed bug 13: Floating point infinities are now supported again.
6028 They might still be a little bit flaky, but thanks to bug reports
6029 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6030 as flaky as they were.
6031 * The --noprogrammer command line option is now supported. (Its
6032 behavior is slightly different in detail from what the old man
6033 page claimed it would do, but it's still appropriate under the
6034 same circumstances that the man page talks about.)
6035 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6036 are now supported, and enabled by default. Thus, the compiler can
6037 handle many floating point and complex operations much less
6038 inefficiently. (Thus e.g. you can implement a complex FFT
6040 * The compiler now detects type mismatches between DECLAIM FTYPE
6041 and DEFUN better, and implements CHECK-TYPE more correctly, and
6042 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6043 thanks to patches from Martin Atzmueller.
6044 * various fixes to make the cross-compiler more portable to
6045 ANSI-conforming-but-different cross-compilation hosts (notably
6046 Lispworks for Windows, following bug reports from Arthur Lemmens)
6047 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6048 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6049 fixed thanks to Pierre Mai's CMU CL patches.
6050 * fixes to keep the system from overflowing internal counters when
6051 it tries to use i/o buffers larger than 16M bytes
6052 * fixed bug 45a: Various internal functions required to support
6053 complex special functions have been merged from CMU CL sources.
6054 (When I was first setting up SBCL, I misunderstood a compile-time
6055 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6056 * improved support for type intersection and union, fixing bug 12
6057 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6058 more obscure bugs as well
6059 * some steps toward byte-compiling non-performance-critical
6060 parts of the system, courtesy of patches from Martin Atzmueller
6061 * Christophe Rhodes has made some debian packages of sbcl at
6062 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6063 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6064 stable, but are nonetheless usable. When he's ready, I'd be happy
6065 to add them to the SourceForge "File Releases" section. (And if
6066 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6067 * new fasl file format version number (because of changes in
6068 internal representation of (OR ..) types to accommodate the new
6069 support for (AND ..) types, among other things)
6071 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6072 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6074 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6076 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6077 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6078 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6079 * DESCRIBE now works on structure objects again.
6080 * Most function call argument type mismatches are now handled as
6081 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6082 know whether the function will be redefined before the call is
6083 executed. (The compiler could flag local calls with full WARNINGs,
6084 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6085 it doesn't keep track of enough information to know whether calls
6086 are local in this sense.)
6087 * Compiler output is now more verbose, with messages truncated
6088 later than before. (There should be some supported way for users
6089 to override the default verbosity, but I haven't decided how to
6090 provide it yet, so this behavior is still controlled by the internal
6091 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6092 src/compiler/ir1util.lisp.)
6093 * Fasl file format version numbers have increased again, because
6094 support for the Gray streams extension changes the layout of the
6095 system's STREAM objects.
6096 * The Gray subclassable streams extension now works, thanks to a
6097 patch from Martin Atzmueller.
6098 * The full LOAD-FOREIGN extension (not just the primitive
6099 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6100 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6101 but like most other programs, it defaults to copying the Unix
6102 environment from the original process instead of starting the
6103 new process in an empty environment.
6104 * Extensions which manipulate the Unix environment now support
6105 an :ENVIRONMENT keyword option which doesn't smash case or
6106 do other bad things. The CMU-CL-style :ENV option is retained
6107 for porting convenience.
6108 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6109 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6111 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6113 * A patch from Martin Atzmueller seems to have solved the SIGINT
6114 problem, and as far as we know, signal-handling now works cleanly.
6115 (If you find any new bugs, please report them!)
6116 * The system no longer defaults Lisp source file names to types
6117 ".l", ".cl", or ".lsp", but only to ".lisp".
6118 * The compiler no longer uses special default file extensions for
6119 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6120 seems to expect a single default extension for all compiled code,
6121 and there's no compelling reason to try to stretch the standard
6122 to allow two different extensions.) Instead, byte-compiled files
6123 default to the same extension as native-compiled files.
6124 * Fasl file format version numbers have increased again, because
6125 a rearrangement of internal implementation packages made some
6126 dumped symbols in old fasl files unreadable in new cores.
6127 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6128 many fewer weird special cases.
6129 * Bug #17 (differing COMPILE-FILE behavior between logical and
6130 physical pathnames) has been fixed, and some related misbehavior too,
6131 thanks to a patch from Martin Atzmueller.
6132 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6133 by Tim Moore, ported to SBCL by Martin Atzmueller.
6134 * Martin Atzmueller fixed several filesystem-related problems,
6135 including bug #36, in part by porting CMU CL patches, which were
6136 written in part by Paul Werkowski.
6137 * More compiler warnings in src/runtime/ are gone, thanks to
6138 more patches from Martin Atzmueller.
6139 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6142 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6144 * DESCRIBE now works on CONDITION objects.
6145 * The debugger now handles errors which arise when trying to print
6146 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6148 * The build system now uses an additional file, customize-target-features.lisp,
6149 to allow local modifications to the target *FEATURES* list. (The point of
6150 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6151 debugging features enabled, without having to worry about propagating it
6152 into everyone's system when I do a "cvs update".) When no
6153 customize-target-features.lisp file exists, the target *FEATURES* list
6154 should be constructed the same way as before.
6155 * fixed bugs in DEFCONSTANT ANSI-compatibility:
6156 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
6157 warn about behavior which is undefined under the ANSI spec. Note: This
6158 is specified by ANSI, but it's not very popular with programmers.
6159 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
6160 macro in the SBCL sources for an example of a workaround which you
6161 might use to make portable ANSI-standard code which does what you want.
6162 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
6163 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
6164 when it's used as a non-toplevel form. (This is required in order
6165 to implement the DEFCONSTANT-EQX macro.)
6166 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6167 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6168 funny things, due to bugs in the implementation of EVAL-WHEN
6169 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6170 non-toplevel DEFCONSTANTs are uncommon.)
6171 * The core file version number and fasl file version number have been
6172 incremented, because the old noncompliant DEFCONSTANT behavior involved
6173 calling functions which no longer exist, and because I also took the
6174 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6175 * fixed bug 1 (error handling before read-eval-print loop starts), and
6176 redid debugger restarts and related debugger commands somewhat while
6178 ** The QUIT debugger command is gone, since it did something
6179 rather different than the SB-EXT:QUIT command, and since it never
6180 worked properly outside the main toplevel read/eval/print loop.
6181 Invoking the new TOPLEVEL restart provides the same functionality.
6182 ** The GO debugger command is also gone, since you can just invoke
6183 the CONTINUE restart directly instead.
6184 ** The TOP debugger command is also gone, since it's redundant with the
6185 FRAME 0 command, and since it interfered with abbreviations for the
6187 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6189 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6190 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6191 some porting work by Martin Atzmueller)
6192 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6193 with a boatload of patches which he ported to SBCL. Now that those
6195 ** The system tries to make sure that its low-priority messages
6196 are prefixed by semicolons, to help people who like to use
6197 syntax highlighting in their ILISP buffer. (This patch
6198 was originally due to Raymond Toy.)
6199 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6200 patches originally written by Raymond Toy.
6201 ** The compiler understands coercion between single-value and
6202 multiple-VALUES type expressions better, getting rid of some very
6203 weird behavior, thanks to patches originally by Robert MacLachlan
6204 and Douglas Crosher.
6205 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6206 lambda lists, thanks to a patch originally by Pierre Mai.
6207 ** The system no longer bogusly warns about "abbreviated type
6209 ** The compiler gets less confused by inlining and RETURN-FROM,
6210 thanks to some patches originally by Tim Moore.
6211 ** The system no longer hangs when dumping circular lists to fasl
6212 files, thanks to a patch originally from Douglas Crosher.
6213 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6214 undefined function error.
6215 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6216 in structure slot initforms) for now, documented workaround instead:-|
6217 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6218 * fixed bug 5: added stubs for various Gray stream functions called
6219 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6220 installed, at least appropriate type errors are generated
6221 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6222 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6223 consistently in DEFMETHOD forms.
6224 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6225 it doesn't seem to affect SBCL after all
6226 * The C runtime system now builds with better optimization and many
6227 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6229 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6231 * The system is now under CVS at SourceForge (instead of the
6232 CVS repository on my home machine).
6233 * The new signal handling code has been tweaked to treat register
6234 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6235 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6236 downstream, e.g. in debug-int.lisp, has implicit dependencies
6237 on the unsignedness of integer representation of machine words,
6238 and that caused the system to bomb out with infinite regress
6239 when trying to recover from type errors involving signed values,
6240 e.g. (BUTLAST '(1 2 3) -1).)
6241 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6242 (This was one of the bugs Peter Van Eynde reported back in July.)
6243 * The system now uses code inspired by Colin Walters' O(N)
6244 implementation of MAP (from the cmucl-imp@cons.org mailing
6245 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6246 inline the MAP operation, and there is more than one
6247 sequence argument to the MAP call (so that it can't just
6248 do ETYPECASE once and for all based on the type of the
6249 single sequence argument). (The old non-inline implementation
6250 of the general M-argument sequence-of-length-N case required
6251 O(M*N*N) time when any of the sequence arguments were LISTs.)
6252 * The QUIT :UNIX-CODE keyword argument has been renamed to
6253 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6254 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6256 * Raymond Wiker's patches to port dynamic loading from Linux to
6257 FreeBSD have been added.
6258 * The BUGS file is now more nearly up to date, thanks in large part
6259 to Martin Atzmueller's review of it.
6260 * The debugger now flushes standard output streams before it begins
6261 its output ("debugger invoked" and so forth).
6262 * The core version number and fasl file version number have both
6263 been incremented, because of incompatible changes in the layout
6265 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6266 used to not be called for a saved Lisp image.)
6267 * Martin Atzmueller's version of a patch to fix a compiler crash,
6268 as posted on sbcl-devel 13 September 2000, has been installed.
6269 * Instead of installing Martin Atzmueller's patch for the
6270 compiler transform for SUBSEQ, I deleted the compiler transform,
6271 and transforms for some similar consing operations.
6272 * A bug in signal handling which kept TRACE from working on OpenBSD
6274 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6275 away by constant folding
6276 * The system now defines its address space constants in one place
6277 (in the Lisp sources), and propagates them automatically elsewhere
6278 (through GENESIS and the sbcl.h file). Therefore, patching the
6279 address map is less unnecessarily tedious and error-prone. The
6280 Lisp names of address space constants have also been systematized.
6281 * CVS tags like dollar-Header-dollar have been removed from
6282 the sources, because they have never saved me trouble and
6283 they've been source of trouble working with patches and other
6284 diff-related operations.
6285 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6286 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6288 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6290 * The system has been ported to OpenBSD.
6291 * The system now compiles with a simple "sh make.sh" on the systems
6292 that it's supported on. I.e., now you no longer need to tweak
6293 text in the target-features.lisp-expr and symlinks in src/runtime/
6294 by hand, the make.sh takes care of it for you.
6295 * The system is no longer so grossly inefficient when compiling code
6296 involving vectors implemented as general (not simple) vectors (VECTOR T),
6297 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6298 which dares to use the various sequence functions on non-simple
6299 vectors, takes less of a performance hit.
6300 * There is now a primitive type predicate VECTOR-T-P
6301 to test for the (VECTOR T) type, so that e.g.
6302 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6303 can now be compiled with some semblance of efficiency. (The old code
6304 turned the type declaration into a full call to %TYPEP at runtime!)
6305 * AREF on (VECTOR T) is still not fast, since it's still compiled
6306 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6307 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6308 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6309 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6310 without making full calls to SUBTYPEP at runtime.
6311 (Some analogous efficiency issues for non-simple vectors specialized to
6312 element types other than T, or for non-simple multidimensional arrays,
6313 have not been addressed. They could almost certainly be handled the
6314 same way if anyone is motivated to do so.)
6315 * The changes in array handling break binary compatibility, so
6316 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6317 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6318 instead of (VALUES T T).
6319 * By following the instructions that Dan Barlow posted to sbcl-devel
6320 on 2 July 2000, I was able to enable primitive dynamic object
6321 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6322 functionality is not implemented (since it calls ld to resolve
6323 library references automatically, requiring RUN-PROGRAM for its
6324 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6325 try to resolve library references) is now supported.
6326 * The system now flushes the standard output streams when it terminates,
6327 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6328 them at several other probably-convenient times, e.g. in each pass of
6329 the toplevel read-eval-print loop, and after evaluating a form given
6330 as an "--eval" command-line option. (These changes were motivated by a
6331 discussion of stream flushing issues on cmucl-imp in August 2000.)
6332 * The source transform for TYPEP of array types no longer assumes
6333 that an array whose element type is a not-yet-defined type
6334 is implemented as an array of T, but instead punts, so that the
6335 type will be interpreted at runtime.
6336 * There is now some support for cross-compiling in make.sh: each of
6337 the phases of make.sh has its own script. (This should be transparent
6338 to people doing ordinary, non-cross-compile builds.)
6339 * Since my laptop doesn't have hundreds of megabytes of memory like
6340 my desktop machine, I became more motivated to do some items on
6341 my to-do list in order to reduce the size of the system a little:
6342 ** Arrange for various needed-only-at-cold-init things to be
6343 uninterned after cold init. To support this, those things have
6344 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6345 symbols with such names are now uninterned after cold init).
6346 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6347 fasl files for cold load.
6348 ** Remove the old compiler structure pooling code (which used to
6349 be conditional on the target feature :SB-ALLOC) completely.
6350 ** Redo the representation of some data in cold init to be more compact.
6351 (I also looked into supporting byte compiled code at bootstrap time,
6352 which would probably reduce the size of the system a lot, but that
6353 looked too complicated, so I punted for now.)
6354 * The maximum signal nesting depth in the src/runtime/ support code has
6355 been reduced from 4096 to 256. (I don't know any reason for the very
6356 large old value. If the new smaller value turns out to break something,
6357 I'll probably just bump it back up.)
6358 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6360 * Many, many bugs reported by Peter Van Eynde have been added to
6361 the BUGS list; some have even been fixed.
6362 * While enabling dynamic object file loading, I tried to make the
6363 code easier to understand, renaming various functions and variables
6364 with less ambiguous names, and changing some function calling
6365 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6366 * While trying to figure out how to do the OpenBSD port, I tried to
6367 clean up some of the code in src/runtime/. In particular, I dropped
6368 support for non-POSIX signal handling, added various comments,
6369 tweaked the code to reduce the number of compilation warnings, and
6370 renamed some files to increase consistency.
6371 * To support the new automatic configuration functionality in make.sh,
6372 the source file target-features.lisp-expr has been replaced with the
6373 source file base-target-features.lisp-expr and the machine-generated
6374 file local-target-features.lisp-expr.
6375 * fixed a stupid quoting error in make.sh so that using CMU CL
6376 "lisp -batch" as cross-compilation host works again
6378 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6380 * DESCRIBE no longer tries to call itself recursively to describe
6381 bound/fbound values, so that it no longer fails on symbols which are
6382 bound to themselves (like keywords, T, and NIL).
6383 * DESCRIBE now works on generic functions.
6384 * The printer now prints less-screwed-up representations of closures
6385 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6386 * A private symbol is used instead of the :EMPTY keyword previously
6387 used to mark empty slots in hash tables. Thus
6388 (DEFVAR *HT* (MAKE-HASH-TABLE))
6389 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6390 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6391 now does what ANSI says that it should. (You can still get
6392 similar noncompliant behavior if bang on the hash table
6393 implementation with all the symbols you get back from
6394 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6395 This breaks binary compatibility, since tests for equality to
6396 :EMPTY are wired into things like the macroexpansion of
6397 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6399 * There's now a minimal placeholder implementation for CL:STEP,
6400 as required by ANSI.
6401 * An obscure bug in the interaction of the normal compiler, the byte
6402 compiler, inlining, and structure predicates has been patched
6403 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6404 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6406 * Missing ordinary arguments in a macro call are now detected even
6407 when the macro lambda list contains &KEY or &REST.
6408 * The debugger no longer complains about encountering the top of the
6409 stack when you type "FRAME 0" to explicitly instruct it to go to
6410 the top of the stack. And it now prints the frame you request even
6411 if it's the current frame (instead of saying "You are here.").
6412 * As specified by ANSI, the system now always prints keywords
6413 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6415 * The default initial SIZE of HASH-TABLEs is now smaller.
6416 * Type information from CLOS class dispatch is now propagated
6417 into DEFMETHOD bodies, so that e.g.
6418 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6420 is now basically equivalent to
6421 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6422 (DECLARE (TYPE SINGLE-FLOAT X))
6424 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6425 operation, without having to do run-time type dispatch.
6426 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6427 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6428 * Since I don't seem to be making big file reorganizations very often
6429 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6430 is overflowing my ability to conveniently back them up), I've finally
6431 checked the system into CVS. (The CVS repository is on my home system,
6432 not at SourceForge -- putting it on SourceForge might come later.)
6433 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6434 high-level GC-NOTIFY-FOO functions send their output. (There's
6435 still very little control of where low-level verbose GC functions
6436 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6437 less than it used to -- the GC-NOTIFY-FOO functions are now under
6438 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6439 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6440 in only one place in the source code, and propagates it automatically
6441 everywhere that it's needed. Thus e.g. when I bump the version from
6442 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6443 * The C source files now include boilerplate legalese and documentation
6444 at the head of each file (just as the Lisp source files already did).
6445 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6446 to his page will be replaced with a link to his new CLiki service.
6448 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6450 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6451 * The build process now looks for GNU make under the default name "gmake",
6452 instead of "make" as it used to. If GNU make is not available as "gmake"
6453 on your system, you can change this default behavior by setting the
6454 GNUMAKE environment variable.
6455 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6456 can build without error under CMU CL.
6458 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6460 * There is now a partial SBCL user manual (with some new text and some
6461 text cribbed from the CMU CL manual).
6462 * The beginnings of a profiler have been added (starting with the
6463 CMU CL profiler and simplifying and cleaning up). Eventually the
6464 main interface should be through the TRACE macro, but for now,
6465 it's still accessed through vaguely CMU-CL-style functions and macros
6466 exported from the package SB-PROFILE.
6467 * Some problems left over from porting CMU CL to the new
6468 cross-compilation bootstrap process have been cleaned up:
6469 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6470 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6471 part when getting rid of the compiler *BACKEND* stuff.)
6472 ** The value of *NULL-TYPE* was screwed up, because it was
6473 being initialized before the type system knew the final
6474 definition of the 'NULL type. This screwed up several key
6475 optimizations in the compiler, causing inefficiency in all sorts
6476 of places. (I found it because I wanted to understand why
6477 GET-INTERNAL-RUN-TIME was consing.)
6478 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6479 PROCLAIM FTYPE information. Unfortunately this broke binary
6480 compatibility again, since now the forms output by DEFGENERIC
6481 to refer to functions which didn't exist in 0.6.3.
6482 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6483 can use the new (as of 0.6.3) transform for SOME into MAP into
6485 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6486 values to (INTEGER 0 1000000), so that the time code will no longer
6487 occasionally get blown up by Linux returning 1000000 microseconds
6488 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6489 its output conform to the ANSI spec. (Alas, this makes its output
6490 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6491 * A full call to MAP NIL with a single sequence argument no longer conses.
6492 * fixes to problems pointed out by Martin Atzmueller:
6493 * The manual page no longer talks about multiprocessing as though
6494 it were currently supported.
6495 * The ILISP support patches have been removed from the distribution,
6496 because as of version 5.10.1, ILISP now supports SBCL without us
6497 having to maintain patches.
6498 * added a modified version of Raymond Toy's recent CMU CL patch for
6499 EQUALP comparison of HASH-TABLE
6501 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6503 * The system still can't cross-compile itself with
6504 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6505 entails), but at least it can compile more of itself that way
6506 than it used to be able to, and various buglets which were uncovered
6507 by trying to cross-compile itself that way have now been fixed.
6508 * This release breaks binary compatibility again. This time
6509 at least I've incremented the FASL file format version to 2, so that the
6510 problem can be detected reliably instead of just causing weird errors.
6511 * various new style warnings:
6512 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6513 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6514 ** using the lexical binding of a variable named in the *FOO* style
6515 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6516 as specified by ANSI.
6517 * *RANDOM-STATE* is no longer automatically initialized from
6518 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6519 default behavior of the system is to repeat its behavior every time
6520 it's run. If you'd like to change this behavior, you can always
6521 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6522 old convention there was no comparably easy way to get the system to
6523 repeat its behavior every time it was run.
6524 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6525 FTYPE declarations has been removed, in favor of their ANSI
6526 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6527 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6528 the types of their sequence arguments can be determined at compile time.
6529 This is done through a new open code expansion for MAP which eliminates
6530 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6531 argument types can be determined at compile time.
6532 * The optimizer now transforms COERCE into an identity operation when it
6533 can prove that the coerced object is already of the correct type. (This
6534 can be a win for machine generated code, including the output of other
6535 optimization transforms, such as the MAP transform above.)
6536 * Credit information has been moved from source file headers into CREDITS.
6537 * Source file headers have been made more standard.
6538 * The CASE macro now compiles without complaining even when it has
6541 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6543 * (Note that the way that the PCL macroexpansions were rewritten
6544 to accommodate the change in DEFGENERIC below breaks binary
6545 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6546 not run under sbcl-0.6.2. Once we get out of alpha releases,
6547 i.e. hit release 1.0.0, we'll probably try to maintain binary
6548 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6549 and sbcl-1.4.4. Until then, however, it might be fairly common
6550 for maintenance releases to break binary compatibility.)
6551 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6553 * The reporting of unhandled signals has been changed to print some
6554 explanatory text as well as the report form. (Previously only
6555 the report form was printed.)
6556 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6557 it defines, so that the compiler no longer issues undefined function
6558 warnings for compiled-but-not-yet-loaded generic functions.
6559 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6560 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6561 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6562 section of the ANSI spec are supported.
6563 * The "" nickname for the "KEYWORD" package has been removed.
6564 The reader still handles symbol tokens which begin with a package marker
6565 as keywords, but it doesn't expose its mechanism for doing so in the
6566 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6567 * The system now issues STYLE-WARNINGs for contradictory TYPE
6568 proclamations. (Warnings for contradictory FTYPE proclamations would
6569 be nice too, but those can't be done usefully unless the type system
6570 is made smarter about FUNCTION types.)
6571 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6572 systematized, so that "*target-*.lisp is supposed to exist only on the
6573 target and imply that there's a related file which exists on the
6574 host, and *host-*.lisp is supposed to exist only on the host and imply
6575 that there's a related file which exists on the target. This involves a
6576 lot of renaming. Hopefully the acute confusion caused by the renaming
6577 will be justified by the reduction in chronic confusion..
6578 ** runtime-type.lisp -> early-target-type.lisp
6579 ** target-type.lisp -> late-target-type.lisp
6580 ** early-host-format.lisp -> early-format.lisp
6581 ** late-host-format.lisp -> late-format.lisp
6582 ** host-error.lisp -> misc-error.lisp
6583 ** early-error.lisp -> early-target-error.lisp
6584 ** late-error.lisp -> late-target-error.lisp
6585 ** host-defboot.lisp -> early-defboot.lisp
6586 ** code/misc.lisp -> code/target-misc.lisp
6587 ** code/host-misc.lisp -> code/misc.lisp
6588 ** code/numbers.lisp -> code/target-numbers.lisp
6589 ** code/early-numbers.lisp -> numbers.lisp
6590 ** early-host-type.lisp -> early-type.lisp
6591 ** late-host-type.lisp -> late-type.lisp
6592 ** host-typep.lisp -> typep.lisp
6593 ** load.lisp -> target-load.lisp
6594 ** host-load.lisp -> load.lisp
6595 ** host-disassem.lisp -> disassem.lisp
6596 ** host-insts.lisp -> insts.lisp
6597 ** byte-comp.lisp -> target-byte-comp.lisp
6598 ** host-byte-comp.lisp -> byte-comp.lisp
6599 ** host-signal.lisp -> signal.lisp
6600 ** host-defstruct.lisp -> defstruct.lisp
6601 ** late-target-type.lisp -> deftypes-for-target.lisp
6602 Furthermore, several other previously target-only files foo.lisp (e.g.
6603 hash-table.lisp and random.lisp) have been split into a target-and-host
6604 foo.lisp file and a target-only target-foo.lisp file, with their key type
6605 definitions in the target-and-host part, so that the cross-compiler will
6606 know more about target types.
6607 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6608 gone away. In their place are various *BACKEND-FOO* variables
6609 corresponding to the slots of the old structure.
6610 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6611 into the target SBCL has been fixed.
6612 * The chill.lisp system for loading cold code into a running SBCL
6614 * Support for the CMU CL "scavenger hook" extension has been removed.
6615 (It was undocumented and unused in the CMU CL sources that SBCL was
6616 derived from, and stale in sbcl-0.6.1.)
6617 * Various errors in the cross-compiler type system were detected
6618 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6619 (enabling various consistency checks). Many of them were fixed,
6620 but some hard problems remain, so the compiler is back to
6621 running without *TYPE-SYSTEM-INITIALIZED* for now.
6622 * As part of the cross-compiler type system cleanup, I implemented
6623 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6624 * I have started adding UNCROSS calls throughout the type system
6625 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6626 on cross-compiler input files will be able to go away, and various
6628 * CONSTANTP now returns true for quoted forms (as explicitly required
6631 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6633 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6634 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6635 (MAKE-LIST -1). In the longer term, it ought to become true
6636 that declarations are assertions even at SAFETY 1. For now, it's not
6637 quite true even at SAFETY 3, but it's at least more nearly true..
6638 (Note that this change seems to increases the size of the system by
6639 O(5%) and to decrease the speed of the compiler by 20% or more.)
6640 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6641 for the problem of printing dozens of lines of distracting information
6642 about low-level system machinery as part of the top stack frame
6643 on entry to the debugger when an undefined function was called.
6644 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6645 is not reset to COMMON-LISP-USER.
6646 * Compilation of stuff related to dyncount.lisp has been made conditional
6647 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6648 smaller. The various dyncount-related symbols have been moved into
6649 a new "SB-DYNCOUNT" package.
6650 * tty-inspect.lisp has been renamed to inspect.lisp.
6651 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6652 feature has gone away. (When we eventually port to other flavors of
6653 libc and/or Unix, we'll try to make the differences between flavors
6654 invisible at the user level.)
6655 * Various other *FEATURES* tags, and/or their associated conditionals,
6656 have been removed if obsolescent, or given better documentation, or
6657 sometimes given more-mnemonic names.
6659 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6661 * tidied up "make.sh" script
6662 * tidied up system directory structure
6663 * better "clean.sh" behavior
6664 * added doc/FOR-CMUCL-DEVELOPERS
6665 * many many small tweaks to output format, e.g. removing possibly-confusing
6666 trailing #\. character in DESCRIBE-INSTANCE
6667 * (EQUALP #\A 'A) no longer signals an error.
6668 * new hashing code, including EQUALP hashing
6669 * tidied up Lisp initialization and toplevel
6670 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6671 * command line argument processing
6672 * added POSIX-GETENV function to deal with Unix-ish environment variables
6673 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6674 terminating SBCL on EOF
6675 * non-verbose GC by default
6676 * There is no more "sbcl" shell script; the sbcl file is now the C
6677 runtime executable (just like CMU CL).
6678 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6680 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6681 symbol and package information as Lisp native symbol and package objects
6682 instead of strings naming symbols and strings naming packages. This way,
6683 whenever packages are renamed (as in warm init), debug information is
6684 transformed along with everything else.
6685 * tweaked the optimization policy declarations which control the building
6686 of SBCL itself. Now, among other things, the system no longer saves
6687 source location debugging information. (This helps two problems at once
6688 by reducing SBCL size and by keeping SBCL from trying to look for its
6689 sources -- which may not exist -- when reporting errors.)
6690 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6691 debugging and testing purposes
6692 * cleaned up printing, making the printer call PRINT-OBJECT for
6693 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6694 methods, giving nearly-ANSI behavior
6695 * converted almost all special variables to use *FOO* naming convention
6696 * deleted PARSE-TIME functionality, since it can be done portably
6697 * moved some files out of cold init into warm init
6698 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6700 * regularized formatting of source files
6701 * added an install.sh script
6702 * fixed ridiculous memory usage of cross-compiler by making
6703 compiler/alloc.lisp not try to do pooling unless it can hook
6704 itself into the GC of the cross-compilation host. Now the system
6705 builds nicely on my old laptop.
6706 * added :SB-ALLOC in target-features.lisp-expr
6707 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6708 was not implemented)
6709 * re-did condition handling and note reporting in the compiler. Notes
6710 are no longer handled by signalling conditions. Style warnings
6711 and warnings are handled more correctly and reported in such a way
6712 that it's easy to find one or the other in your output (so that you
6713 can e.g. figure out which of many problems caused COMPILE-FILE to
6715 * changed the severity of several compiler warnings from full WARNING
6716 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6717 compiler note reporting so that it doesn't use the condition system
6718 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6719 COMPILE-FILE command)
6720 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6721 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6722 no longer supported, since their implementation was deeply intertwingled
6723 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6724 * removed bogus "support" for compiler macros named (SETF FOO), and
6725 removed the compiler macro for SETF INFO (but only after making a fool
6726 of myself on the cmucl-imp mailing list by posting a bogus patch for
6727 DEFINE-COMPILER-MACRO..)
6728 * Compiled files containing forms which have side effects on the Lisp
6729 reader (such as DEFPACKAGE forms) are now handled more correctly.
6730 (Compiler queuing of top level lambdas has been suppressed by setting
6731 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6732 * deleted various currently-unused source files, e.g. gengc.lisp. They
6733 may be added back at some point e.g. when porting to other architectures,
6734 but until they are it's distracting to distribute them and to try to
6736 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6737 there were so many of them they're just distractions, and UNCROSS is
6738 known to be able to handle the current sources
6739 * moved PROFILE functionality into TRACE, so that it will be clear
6740 how the wrapping and unwrapping of functions when you profile them
6741 interacts with the wrapping and unwrapping of functions when you
6742 trace them. (Actually, the functionality isn't there yet, but at least
6743 the interface specification is there. Hopefully, the functionality will
6744 arrive with some future maintenance release.)
6745 * removed host-oops.lisp
6746 * changed signature of QUIT function to allow UNIX-CODE argument
6747 * fixed READ-SEQUENCE bug
6748 * tweaked verbose GC output so that it looks more like the progress
6749 output that ANSI specifies for functions like LOAD
6750 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6751 * added <http://sbcl.sourceforge.com> to the banner information printed by