1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.1.5:
3 * enhancement: the continuable error when defknown-ing over extant
4 fndb entries can be ignored by passing :overwrite-fndb-silently t
5 as a keyword argument to sb-c:defknown (after attributes). Useful
6 to allow defknown to be re-loaded. Use with :allow-other-keys t
7 for backward compatibility.
8 * bug fix: Prevent a make-array transform from modifying source forms
9 causing problems for inlined code. Thanks to Bart Botta.
10 (regression since 1.0.42.11-bis)
11 * bug fix: clear-output calls the correct gray stream routine,
12 sb-gray:stream-clear-output. (lp#1153257)
14 changes in sbcl-1.1.5 relative to sbcl-1.1.4:
15 * minor incompatible change: SB-SPROF:WITH-PROFILING no longer loops
17 * new feature: package local nicknames. See manual for details.
18 * new feature: SB-EXT:MAP-DIRECTORY provides a powerful interface for
19 directory traversal: it is the backend used by SBCL for CL:DIRECTORY.
20 * enhancement: easier to use restarts for resolving name-conflicts
21 resulting from IMPORT, EXPORT, or USE-PACKAGE.
22 * enhancement: variant DEFPACKAGE forms now signal a full error with
23 restarts provided for resolving the situation. (lp#891351)
24 * enhancement: by setting SB-EXT:*ON-PACKAGE-VARIANCE* appropriately variant
25 DEFPACKAGE forms can now signal a full error with restarts provided for
26 resolving the situation. See manual for details. (lp#891351)
27 * enhancement: make-random-state now uses CryptGenRandom as a seed on Windows.
28 (Thanks to Anton Kovalenko.) (lp#1102748)
29 * enhancement: backtrace improvements
30 ** secondary CLOS dispatch functions have better debug names (lp#503081)
31 ** easier to read method names in backtraces. See
32 SB-DEBUG:*METHOD-FRAME-STYLE*.
33 ** SB-DEBUG:PRINT-BACKTRACE and SB-DEBUG:LIST-BACKTRACE are available as
34 forwards-compatible replacements for SB-DEBUG:BACKTRACE and
35 SB-DEBUG:BACKTRACE-AS-LIST.
36 ** SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS** has been deprecated, as the same
37 information is available in less intrusive form as frame annotations.
38 * enhancement: SB-POSIX now provides MAP-ANON.
39 * enhancement: test-suite results are colorized, failures in red, unexpected
40 success in green. Works on Windows and on terminals with ANSI escape code
41 support. Can be disabled with --no-color.
42 * optimization: SB-CONCURRENCY:QUEUE implementation is more efficient.
43 (thanks to James M. Lawrence)
44 * bug fix: no more unused variable style warnings from RESTART-CASE
45 macroexpansion (lp#1113859)
46 * bug fix: no more unused variable style warnings when loading
47 sb-bsd-sockets.asd (lp#1114681)
48 * bug fix: deleting a package removes it from implementation-package
49 lists of other packages.
50 * bug fix: SB-SPROF:WITH-PROFILING is now usable in the Slime REPL on Darwin.
51 This does not fix the occasional "interrupt already pending" issue, though.
52 * bug fix: (setf (documentation 'x 'function)) and
53 (setf (documentation #'x t)) set documentation in different places.
54 (regression since 1.0.43.63)
55 * bug fix: build on newer glibc. (lp#1095036)
57 changes in sbcl-1.1.4 relative to sbcl-1.1.3:
58 * optimization: LOOP expressions using "of-type character" have slightly
59 more efficient expansions.
60 * bug fix: very long (or infinite) constant lists in DOLIST do not result
61 in very long compile times or heap exhaustion anymore. (lp#1095488)
62 * bug fix: `#3(1) is read as #(1 1 1), not as #(1). (lp#1095918)
63 * bug fix: adjust-array ignored :initial-element for simple-vectors.
65 * bug fix: optimizations to MAKE-INSTANCE with literal list initargs no
66 longer cause infinite loops (on circular data) or violate eqlity
67 constraints. (lp#1099708)
68 * bug fix: FIRST was not being open coded. (regression from 1.1.0)
70 changes in sbcl-1.1.3 relative to sbcl-1.1.2:
71 * enhancement: warnings about bad locale settings, LANG, LC_CTYPE, etc.
73 * enhancement: support for C-c to interrupt the foreground thread
74 on Windows. (Thanks to Anton Kovalenko.)
75 * enhancement: STDCALL alien callbacks. (Thanks to Anton Kovalenko.)
76 * enhancement: Safepoint builds on POSIX platforms can now optionally be
77 built without pseudo-atomic sequences and their run-time overhead.
78 * enhancement: Threads created outside of Lisp can enter Lisp through
79 alien callbacks and appear as Lisp threads for the duration of that
80 function invocation. On safepoint builds only.
81 * enhancement: Miscellaneous improvements to namestrings and underlying
82 calls to OS functions for file system access on Windows. (Thanks to
84 * enhancement: The MSI installer support for Windows now uses Windows
85 Installer XML at least version 3.5 and includes various usability
86 improvements. (Thanks to Dmitry Kalyanov and Anton Kovalenko.)
87 * enhancement: The sb-bsd-sockets contrib now supports non-blocking-mode
88 on Windows. (Thanks to Anton Kovalenko.)
89 * enhancement: The Windows backend now supports the x86-64 platform.
90 (Thanks to Anton Kovalenko.)
91 * bug fix: fasls are now once again directly executable (on platforms
92 supporting shebang lines, with a suitably-installed sbcl).
93 * bug fix: make.sh --help no longer runs clean.sh. (lp#937001)
94 * bug fix: Fix CAS access to slots of direct instances of structure classes
95 in the presence of subclasses sharing the same conc-name.
96 * bug fix: Logical pathname namestrings on Windows have been changed to
97 be lower-case, to minimize differences between POSIX and Windows.
99 changes in sbcl-1.1.2 relative to sbcl-1.1.1:
100 * notice: System requirements for SBCL on Microsoft Windows: Windows NT 5.1
101 or newer (Windows XP, Server 2003) is required. Support for Windows 2000
102 (NT 5.0) is no longer being maintained.
103 * notice: Starting with this version, SBCL on Windows no longer supports
104 building with disabled thread support.
105 * enhancement: frlocks have been added to SB-CONCURRENCY contrib module.
106 * enhancement: New feature sb-dynamic-core allows the runtime to be
107 rebuilt or relocated without requiring changes to the core file on
108 all linkage table platforms. Required on Windows. (Thanks to Anton
110 * enhancement: Console I/O streams use UCS-2. (Thanks to Anton Kovalenko.)
111 * enhancement: I/O on Windows unnamed pipes is interruptible
112 asynchronously using interrupt-thread, timers when running on Windows NT
113 version 6.1 or newer (Windows 7, Server 2008 R2). (Thanks to Anton
115 * enhancement: Support for the experimental safepoint-based stop-the-world
116 protocol on the PowerPC platform.
117 * bug fix: Non-blocking reads from the Windows console were not necessarily
118 non-blocking. Thanks to Anton Kovalenko. (lp#308923)
119 * bug fix: stability of threads on Windows has been improved upon through
120 an updated stop-the-world protocol (thanks to Anton Kovalenko).
122 changes in sbcl-1.1.1 relative to sbcl-1.1.0:
123 * enhancement: WITH-COMPILATION-UNIT no longer grabs the world-lock.
124 (COMPILE and COMPILE-FILE still do.)
125 * optimization: the SPARC backend now supports the precise generational
126 (GENCGC) garbage collection. Enabled by default on Solaris/SPARC and
127 Linux/SPARC. Thanks to Raymond Toy (via CMUCL).
128 * enhancement: add experimental support for the SB-THREAD feature and the
129 timer facility on Windows. Thanks to Dmitry Kalyanov and Anton Kovalenko.
130 Threads are enabled by default, and this version of SBCL is considered
131 to be the last and final release to officially support building with
133 * optimization: The compiler no longer rotates loops in some cases where
134 this transformation actually lead to worse code being generated.
135 * bug fix: SB-CLTL2:MACROEXPAND-ALL correctly handles shadowing of
136 symbol-macros by lexical bindings.
137 * bug fix: stack allocation was prevented by high DEBUG declaration in
139 * bug fix: SB-EXT:GC-LOGFILE signaled an error when no logfile was set.
140 (thanks to SANO Masatoshi)
141 * bug fix: PARSE-NATIVE-NAMESTRING performed non-native parsing when
142 :JUNK-ALLOWED was true.
143 * bug fix: type derivation inferred overly conservative types for
144 unions of array types. (lp#1050768)
146 changes in sbcl-1.1.0 relative to sbcl-1.0.58:
147 * enhancement: New variable, sb-ext:*disassemble-annotate* for controlling
148 source annotation of DISASSEMBLE output. Defaults to T.
149 * enhancement: TIMEOUT arguments added to WITH-MUTEX and WITH-RECURSIVE-LOCK, and
150 WAIT-P argument added to WITH-RECURSIVE-LOCK.
151 * enhancement: SB-EXT:ATOMIC-PUSH and SB-EXT:ATOMIC-POP allow atomic operations
153 * enhancement: Optional features (not enabled by default) allow the
154 use of signals for inter-thread synchronization to be reduced on certain
155 supported platforms (currently Linux, Solaris, and FreeBSD on x86 and
156 x86-64). Set (and :sb-thread :sb-safepoint :sb-thruption :sb-wtimer)
157 to test these experimental features. Known remaining bugs include minor
158 thread safety issues, less timely freeing of memory by GC, and certain
159 (not yet optimally low) runtime overhead. Thanks to Anton Kovalenko.
160 * optimization: CL:SORT and CL:STABLE-SORT of lists are faster and use fewer
161 comparisons, particularly on almost-sorted inputs.
162 * bug fix: Reading floats with large exponents no longer takes too much time
163 before reporting that the exponent is too large.
164 * bug fix: SB-BSD-SOCKETS:SOCKET-RECEIVE with a UDP socket now works
165 correctly when the received datagram is larger than the provided buffer.
166 (lp#1023438, thanks to Robert Uhl)
167 * bug fix: SB-EXT:GET-CAS-EXPANSION returned a bogus read-form when given
168 a SYMBOL-VALUE form with a constant symbol argument.
169 * bug fix: SB-EXT:GET-CAS-EXPANSION signaled an error when a macro expanding
170 into a DEFCAS defined place was used as the place.
171 * bug fix: FIND and POSITION signaled a type-error when non-bits where looked
172 for from bit-vectors.
173 * bug fix: a race condition around thread creation could (in SBCL 1.0.57)
174 lead to internal errors or crashes (lp#1058799).
175 * documentation: a section on random number generation has been added to the
178 changes in sbcl-1.0.58 relative to sbcl-1.0.57:
179 * enhancement: implicit generic function warnings now specify the package
180 in which the new generic function is being created.
181 * enhancement: SB-EXT:ATOMIC-UPDATE makes it easy to perform non-destructive
182 updates of CAS-able places (similar to Clojure's swap!).
183 * enhancement: run-program no longer decodes and re-encodes environment when
184 :environment argument is not provided. (lp#985904)
185 * enhancement: errors during compiler-macro expansion no longer cause
186 runtime errors, only a compile-time warning, otherwise behaving as if
187 the compiler macro had declined to expand.
188 * optimization: On x86-64, code alignment of block headers is done with
189 multi-byte NOPs now instead of repetitions of the single-byte NOP.
190 * optimization: MAP-INTO is substantially faster when the target sequence is
191 of unknown type; mapping into lists is no longer O(N^2). (lp#1001043,
192 thanks to James M. Lawrence)
193 * optimization: the compiler no longer heap-conses to check exits in cases
194 where the exit function is dynamic extent, or when it can prove the exit
195 function cannot escape. (lp#1002534)
196 * optimization: SB-SEQUENCE:DOSEQUENCE is faster on vectors of unknown
197 element type, and vectors that aren't SIMPLE-ARRAYs.
198 * optimization: CL:SORT and CL:STABLE-SORT are more efficient in execution
199 speed (around 1/3 the time in some cases), and a little better in terms of
200 comparison calls. (Thanks to Takeru Ohta)
201 * bug fix: On SPARC, a limitation on the number of code constants emittable
202 by the compiler has been lifted, allowing certain long functions to
203 compiled and assembled which had previously been unsupported; fixes
204 cl-bench on this ISA (lp#1008996).
205 * bug fix: potential for infinite recursion during compilation of CLOS slot
206 typechecks when dependency graph had loops. (lp#1001799)
207 * bug fix: error forms reported with some program-errors were not escaped
209 * bug fix: functions from EVAL are now on more equal footing with functions
210 from COMPILE. (lp#1000783, lp#851170, lp#922408)
211 * bug fix: ENSURE-GENERIC-METHOD-COMBINATION accepts method combination
212 objects as its :METHOD-COMBINATION argument, not just lists designating
213 method combinations. (lp#936513)
214 * bug fix: run-program no longer unconditionally uses /tmp/ for temporary
216 * bug fix: restore build on solaris/sparc. (lp#1008506)
217 * bug fix: an issue with LDB in the PowerPC backend has been resolved;
218 this fixes an issue found with cl-postgres (thanks to Tomas Hlavaty).
219 * bug fix: compiler-macro lambda-lists specifying non-keyword symbols
220 as keyword arguments no longer accidentally match unevaluated symbols
222 * bug fix: FORMAT used to loop infinitely in some cases when a COLINC
223 parameter was zero, now it signals an error. (lp#905817, fixed since
225 * bug fix: run-program with :pty t no longer makes the pty as the process's
227 * bug fix: spawning threads on OS X 10.8 no longer crashes the process
230 changes in sbcl-1.0.57 relative to sbcl-1.0.56:
231 * RANDOM enhancements and bug fixes:
232 ** bug fix: the range and distribution of random integers could be
233 catastrophically wrong when the compiler derived the type of its
234 argument as a disjoint set of small integers.
235 ** bug fix: the distribution of random integers is now completely
236 uniform even when the specified limit is not a power of two.
237 (Previously some values could be about 0.1 % more probable than
238 others in the worst case.) (lp#309467)
239 ** RANDOM on large integer arguments is generally faster and conses
240 less than before; this is visible for fixnums above a length of
241 about 24 bits, but extremely so for bignums: the old implementation
242 used time and space quadratical in the size of the argument there,
243 the new one is linear.
244 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
245 main entry point, SB-EXT:QUIT is deprecated.
246 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
247 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
248 * enhancement: FASL loading no longer grabs the world-lock.
249 * enhancement: GENCGC reclaims space more aggressively when objects being
250 allocated are a large fraction of the total available heap space.
252 * enhancement: backtraces show the correct number of arguments for frames
253 called with too many arguments.
254 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
256 * enhancement: ASDF has been updated 2.21.
257 * optimization: fewer uses of full calls to signed modular functions.
259 * optimization: typechecking alien values is typically 5 x faster.
260 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
262 * bug fix: file compilation performance issues when dumping subtypes
263 of CHARACTER (lp#994487)
264 * bug fix: fixed disassembly of some SSE instructions on x86-64.
265 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
266 OPEN. (lp#969352, thanks to Kambiz Darabi)
267 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
269 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
270 classoid even if X was not the proper name of the class. (lp#941102)
271 * bug fix: declaration leakage between lexical environments due to careless
272 use of NCONC in MAKE-LEXENV. (lp#924276)
273 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
274 *default-pathname-defaults* contains NAME or TYPE components.
275 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
276 from CL package, e.g. (loop . 10).
277 * bug fix: run-program with existent or non-existent files for :output or
278 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
279 returns NIL instead of signalling an obscure error.
280 * bug fix: fix miscompilation of some logand forms with large constant
281 arguments. (lp#974406)
282 * bug fix: account for funcallable-instance objects properly in ROOM.
283 * bug fix: incorrect octets reported for c-string decoding errors.
285 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
287 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
288 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
289 allowing faster release of memory back to the OS. (lp#991293)
290 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
291 existing deadline for the dynamic scope of its body.
292 * bug fix: compiler-internal interval arithmetic needed to be more
293 conservative about open intervals when operated on by monotonic but not
294 strictly-monotonic functions. (lp#975528)
295 * bug fix: copy-tree caused stack exhaustion on long linear lists, and now
296 it's also slightly faster. (lp#998926)
297 * bug fix: better error messages for malformed declarations.
299 * bug fix: define-condition didn't return the name of the defined condition.
301 ** improved docstrings: REPLACE (lp#965592)
303 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
304 * bug fix: fix copy-structure. When copying from stack to heap, garbage
305 could end up in the heap making GC unhappy.
306 (Thanks to James Knight, lp#911027)
308 ** SBCL can now be built using Clang.
309 ** ASDF has been updated 2.20.
310 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
311 * bug fix: don't complain about a too-hairy lexical environment for inlining
312 when the function has never been requested for inlining. (lp#963530)
314 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
315 * enhancements to building SBCL using make.sh:
316 ** --fancy can be specified to enable all supported feature enhancements.
317 ** --with-<feature> and --without-<feature> can be used to specify
318 which features to build with.
319 ** --arch option can be used to specify the architecture to build for.
320 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
321 full-blows cross-compilation.)
322 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
323 which allows specifying name of the default interning package for the
325 * enhancement: when *READ-EVAL* is true, arrays with element type other than
326 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
327 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
328 null alien when malloc() fails. (lp#891268)
329 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
330 conditions can be conveniently accessed through function with the same
331 name, analogously to CONTINUE.
332 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
333 from the printer by type, causing an error marker to be printed instead.
334 (Thanks to Attila Lendvai)
335 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
336 generally behave better when errors occur during printing.
337 * enhancement: the test runner now takes a --report-skipped-tests argument
338 to report the individual tests skipped as well as the number of skipped
340 * enhancement: undefined functions now appear in backtraces as ("undefined
341 function") instead of ("bogus stack frame") on x86oids.
342 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
343 deadlock errors are reported in an easier-to-decipher manner.
344 * enhancement: DESCRIBE on type designators reports the expansion in more
346 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
347 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
348 of the :LITTLE-ENDIAN feature. (Thanks to LuÃs Oliveira, lp#901661)
349 * enhancement: better disassembly of segment-prefixes on x86 and other
350 instruction prefixes (e.g. LOCK) on x86 and x86-64.
351 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
352 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
353 * optimization: SUBSEQ on vectors of unknown element type is substantially
355 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
356 be stack-allocated. (lp#902351)
357 * optimization: the compiler is smarter about representation selection for
358 floating point constants used in full calls.
359 * optimization: the compiler no longer refuses to coerce large fixnums to
360 single floats inline, except on x86 where this limitation is still
362 * optimization: truncation operations on integers with constant divisor
363 arguments 1 and -1 are optimized away.
364 * bug fix: deadlock detection could report the same deadlock twice, for
365 two different threads. Now a single deadlock is reported exactly once.
366 * bug fix: interval-arithmetic division during type derivation did not
367 account for signed zeros.
368 * bug fix: compiler error when typechecking a call to a function with
369 non-constant keyword arguments.
370 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
371 * bug fix: condition slot accessors no longer cause undefined function
372 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
373 form that defines them. (lp#896379)
374 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
376 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
377 bogusly report NIL, T.
378 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
379 required arguments ignored and performed assignments to others.
381 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
382 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
383 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
384 * bug fix: redefining a function whose previous definition contained an
385 unknown type no longer causes a style-warning. (lp#806243)
386 * bug fix: undefined functions now appear in backtraces as ("undefined
387 function") instead of ("bogus stack frame") on non-x86oids.
388 * bug fix: backtraces are no longer cut off at ("undefined function") when
389 called under certain circumstances (involving a caller-allocated stack
391 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
392 systems. (regression since 1.0.53)
393 * bug fix: GC deadlocks from dladdr() on certain platforms.
394 * bug fix: broken standard streams no longer automatically cause recursive
395 errors on debugger entry.
396 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
397 (regression since 1.0.53)
398 * bug fix: attempts to stack allocate a required argument to a function with
399 an external entry point caused compiler-errors.
400 * bug fix: compiler notes for failed stack allocation for a function argument
401 no longer claim to be unable to stack allocate the function.
402 * bug fix: COERCE now signals a type-error on several coercions to
403 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
404 * bug fix: missing failure-to-stack-allocate compiler notes for some
405 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
406 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
408 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
410 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
411 * minor incompatible changes:
412 ** RENAME-FILE on a symbolic links used to rename the linked-to file
414 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
415 directory, but now signal an error instead. Use TRUENAME to resolve the
416 pathname if you wish to delete the linked directory, and DELETE-FILE if
417 you wish to delete the
418 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
419 symbols associated with it will trigger a compile-time warning.
420 * thread-related enhancements:
421 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
422 Many thanks to generous donors!)
423 ** Threading is now more reliable on non-Linux platforms. We still don't
424 consider threads on non-Linux platforms good enough to enable them by
425 default, but they're in a clearly better shape now.
426 ** Deadlines supported now on all platforms.
427 ** All blocking functions in the threading API now have a :TIMEOUT
429 ** Semaphore notification objects have been added to SB-THREAD.
430 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
431 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
432 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
433 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
434 using an API anologous to defining new SETFable places.
435 * GC-related enhancements and bug fixes:
436 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
437 and Gb suffixes. Default is megabytes as before.
438 ** on GENCGC targets, the default dynamic space size is now 512Mb for
439 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
440 exception, defaulting to mere 444Mb to fit under default ulimits.) The
441 new defaults are in place to prevent hitting swap on low-end systems.
442 Use build-time option --dynamic-space-size to build an SBCL with
443 another default, or the runtime option to adjust the size at startup: a
444 good size is at most equal to the amount of physical memory the system
446 ** on GENCGC targets, nursery and generation sizes now default to 5% of
448 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
449 refuses to create SIMPLE-FUN objects.
450 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
452 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
453 validation of pointer objects as GENCGC does, instead of a
454 comparatively weak bounds-check against the heap spaces.
455 * SB-BSD-SOCKETS bug fixes:
456 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
457 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
458 systems with getaddrinfo().
459 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
460 safe outside systems with getaddrinfo().
461 * enhancement: ASDF has been updated 2.019.
462 * enhancement: special-case TCO prevention for functions which never return
463 extended to untrusted types, keeping one more frame's worth of debug
464 information around in many cases.
465 * enhancement: debug-names of anonymous and local function are more
466 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
467 * enhancement: on win32, ABS of complex floats guards better against
468 overflows. (lp#888410)
469 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
470 process exiting with code 1. (lp#676987)
471 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
472 the system where on the filesystem the SBCL sources themselves are
473 located. (Thanks to Zach Beane)
474 * enhancement: the compiler is now able to derive tighter bounds for
475 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
476 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
477 correctly, even on wide-fixnum builds. (lp#887220)
478 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
479 resolved to directories.
480 * bug fix: type mismatch when assigning to lexical variables no longer
481 result in fasl-dumping internal type objects. (lp#890750)
482 * bug fix: type mismatch on (SETF AREF) and function return values no
483 longer result in fasl-dumping internal type objects.
484 * bug fix: With several combinations of argument types, for example (EXPT
485 <integer> <(complex double)>), EXPT now uses double-precision throughout
486 instead of partially calculating only to single-precision. (lp#741564;
487 thanks to Lutz Euler)
488 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
489 objects when interrupted by GC on PPC.
491 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
492 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
493 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
494 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
495 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
496 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
497 targets is now 63 bits (up from 61).
498 * enhancement: DESCRIBE now reports a lambda-list and source location
499 for complext setf-expanders.
500 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
501 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
502 of multiple-valued places to be set to NIL, instead of signalling an
503 error (per a careful reading of CLHS 5.1.2.3).
504 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
505 * bug fix: repair crash in x86oid darwin signal handling emulation
506 when built with certain compilers.
507 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
508 rotation arguments on x86-64. (lp#882151)
509 * bug fix: low-level control flow optimisations could result in bogus
510 code in functions with tail and non-tail calls to local functions on
512 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
513 to emit literal characters > (code-char 4095), for comparisons with
515 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
516 on 64 bit platforms. (lp#881445)
517 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
518 delete the wrong file when using relative pathnames. (lp#882877)
519 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
520 sequences and :KEY NIL.
522 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
523 * enhancement: ASDF has been updated to version 2.017.
524 * enhancement: the --core command line option now accepts binaries with
526 * enhancement: when built with :sb-core-compression, core files (regular
527 or executable) can be compressed with zlib. Use the :COMPRESSION
528 argument to SAVE-LISP-AND-DIE to specify a compression level.
529 * enhancement: --[no-]merge-core-pages determines whether the runtime
530 hints the operating system that identical core pages between SBCL
531 processes should share the same physical memory. Default is to only
532 enable this for compressed cores.
533 * optimization: SLEEP no longer conses.
534 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
535 or bit-vectors when using the standard pretty-print dispatch table.
536 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
538 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
539 AREF, CHAR, etc. (lp#826971)
540 * bug fix: compiler-errors causes by integer arguments with composed of
541 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
542 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
543 expressions. (lp#770184)
544 * bug fix: complex single float literals are correctly aligned when used
545 as arguments of arithmetic operators.
546 * bug fix: on 32-bit platforms, rounding of double floats larger than a
547 fixnum is correct. (reported by Peter Keller)
548 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
549 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
551 * bug fix: redefining classes such that slots with custom allocation are
552 added or removed works again.
554 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
555 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
556 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
557 MAKE-SOCKET-STREAM if using SERVE-EVENT.
558 * enhancement: added support for socket keepalive timeout intervals
559 and probe counts on Linux.
560 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
561 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
562 * enhancement: added new toplevel options --quit and --non-interactive
564 * enhancement: the Windows port of SBCL now builds and runs on Wine
565 (thanks to Anton Kovalenko).
566 * enhancement: more, and more correct, SSE instruction definitions on
567 x86-64 (thanks to Alexander Gavrilov).
568 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
569 to help the processor execute spin loops, when applicable. Currently
570 implemented for x86 and x86-64.
571 * optimization: unsigned integer divisions by a constant are implemented
572 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
573 * optimization: improved type-derivation for LOAD-TIME-VALUE.
574 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
575 instructions. (lp#814688)
576 * bug fix: COERCE to unfinalized extended sequence classes now works.
577 (reported by Jan Moringen; lp#815155)
578 * bug fix: a compiler error during typecheck generation, reported by Eric
580 * bug fix: obsolete instance protocol fires when shared slots are added
582 * bug fix: fixed-format floating point printing with scaling factors.
584 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
585 backtraces. (lp#818460)
586 * bug fix: better backtraces for interrupted syscall frames on x86.
588 * bug fix: SSE comparison instructions can be disassembled even when one
589 operand is in memory. (lp#814702)
590 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
591 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
592 type information associated with the VALUES form.
593 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
595 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
596 first write (lp#561642).
597 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
598 * bug fix: bound propagation involving conversion of large bignums to
599 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
601 * bug fix: &REST to &MORE conversion still works in unsafe call to known
602 functions; reported by Lutz Euler (lp#826459).
603 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
606 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
607 * enhancement: errors from FD handlers now provide a restart to remove
608 the offending handler.
609 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
611 * enhancement: location of user or system initialization file can now easily
612 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
613 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
614 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
615 the thunk, as a keyword argument, :arguments.
616 * enhancement: constraint propagation is simplified (and sped up) when
617 COMPILATION-SPEED > SPEED.
618 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
619 * enhancement: debugger understands &MORE arguments better.
620 * optimization: extracting bits of a single-float on x86-64 has been
621 optimized. (lp#555201)
622 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
623 when (> SPEED SPACE).
624 * optimization: local call trampolines (x86 and x86-64) are emitted
626 * optimization: implicit value cells for dynamic-extent closed-over bindings
627 on x86 and x86-64 can hold unboxed values as well.
628 * meta-optimization: improved compilation speed, especially for large
629 functions. (lp#792363 and lp#394206)
630 * bug fix: bound derivation for floating point operations is now more
631 careful about rounding possibly closing open bounds. (lp#793771)
632 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
633 backwards incompatible change in 1.0.48.27)
634 * bug fix: occasional debugger errors in when a type-error occured in a
635 function with dynamic-extent &rest list.
636 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
637 boa-construtors can be used to initialized structure slots.
638 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
639 (lp#795705, regression)
640 * bug fix: DIRECTORY works better on logical pathnames.
641 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
642 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
643 * bug fix: the compiler no longer constant-folds NaNs in
644 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
645 * bug fix: FORMAT now handles floating point rounding correct, eg.
646 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
648 * bug fix: style warning during lambda-list introspection of generic
649 functions with both optional and key argments.
650 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
652 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
655 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
656 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
657 interrupts for its body.
658 * enhancement: source locations are now available for files loaded as
659 source, compile-time-too evaluation, and initialization files.
660 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
661 virtual source-file information, eg. overriding input-file of COMPILE-FILE
662 when a temporary file is used for compilation.
663 * enhancement: ASDF has been updated to version 2.015.3.
664 * enhancement: backtraces involving frames from the default evaluator are
666 * enhancement: RUN-PROGRAM works with user-defined binary input and output
668 * enhancement: more informative compile-time warnings and runtime errors for
669 type-errors detected at compile-time.
670 * enhancement: deadlock detection for mutexes and spinlocks.
671 * enhancement: dynamic-extent for &rest lists stack allocate only their
672 spines, not their argumets. While portable code should not rely on this,
673 particularly in combination with inlining, it should make dynamic-extent
674 easier to use safely.
675 * enhancement: SB-POSIX improvements:
676 ** WNOHANG and WUNTRACED are exported.
677 ** SYSCALL-ERROR now also provides the name of the failing system call.
678 * enhancement: --script improvements:
679 ** errors on standard input, output, and error streams are handled and
680 cause scripts to exit silently, making them easier to use in shell
682 ** backtraces from scripts now go to standard error instead of the
683 terminal even if one is available.
684 ** --script can be an argument, causing the script to be loaded from
686 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
687 strings to foreign memory.
688 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
689 a file, making it easier to understand heap dynamics.
690 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
691 allows the compiler to automatically elide rest-list allocation so long as
692 the call sites are in functions that the compiler knows cannot escape.
694 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
695 especially in safe code when none of the required arguments have changed
697 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
698 uninterruptible, as well as blocking reads from socket streams created
699 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
700 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
701 from the to-char if the from-char is not a dispatch-macro character.
702 * bug fix: references to undefined variables in function calls that are
703 optimized away now signal a runtime error. (lp#722734)
704 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
705 types from a function defined in the same file. (regression from
707 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
709 * bug fix: spurious errors during QUIT when standard streams were closed.
711 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
712 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
713 years, is now no longer supported.
714 * enhancement: read() and write() have been added to SB-POSIX.
715 * enhancement: types of DEFSTRUCT constructors are proclaimed more
716 accurately, allowing better typechecking of call-sites.
717 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
718 are no longer caught. (reverted to pre 1.0.34 behaviour)
719 * optimization: slightly faster ISQRT. (lp#713343)
720 * bug fix: better support for Solaris /bin/sh in sh-based tests.
721 * bug fix: TRACE behaves better when attempting to trace undefined
722 functions. (lp#740717)
723 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
724 to (FUNCALL #'(LAMBDA ...) ...).
725 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
726 a compile-time error. (lp#720382)
727 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
729 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
730 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
731 optimization. (regression from 1.0.45.18/1.0.46.15)
732 * bug fix: package locks did not protects against compile-time side-effects
733 of DEFUN. (lp#675584)
734 * bug fix: --dynamic-space-size argument is validated more carefully.
736 * bug fix: memory fault from printing a malformed simple-condition.
738 * bug fix: redefining classes so that slot-definition classes change now
739 engages the obsolete instance protocol. (lp#766271)
740 * bug fix: constant improper lists could break source coverage recording.
742 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
745 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
746 * bug fix: fix mach port rights leaks in mach exception handling code on
747 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
749 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
750 * enhancement: redefinition warnings for macros from different files. (lp#434657)
751 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
752 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
753 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
754 processed using EVAL -- now the appropriate toplevel form is reported instead.
755 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
756 declarations. (lp#726331)
757 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
758 that NIL/NULL is excluded from the type.
759 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
761 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
763 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
764 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
765 stack-allocated values out of their dynamic-extent. (lp#310175)
766 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
767 x86-64 builds caused a type-error.
768 * bug fix: calling COMPILE with something else than a lambda-expression as the
769 second argument reports a more sensible error. (lp#718905)
770 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
771 are detected. (lp#520607)
772 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
774 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
775 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
776 methods. (regression from 1.0.45.18)
777 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
778 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
779 * bug fix: several foreign functions accepting string also accepted NIL and
780 consequently caused a memory fault at 0 now signal a type-error instead.
782 * bug fix: under rare circumstances, constraint propagation could rewrite a
783 variable reference to refer to a variable not in scope, causing an error
784 during physical environment analysis when attempting to close over the
785 variable. (lp#551227)
786 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
788 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
789 * enhancement: largefile support on Solaris.
790 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
791 arguments (lp#710017)
792 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
793 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
795 * optimization: ERROR and CERROR are approximately 5 times faster.
796 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
797 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
798 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
799 up instance creation in those cases.
800 * optimization: arithmetic operations with multiple constant arguments in now
801 have them reduced at compile-time. (lp#676414)
802 * optimization: determining current character position on string-streams for
803 pretty-printing was overly slow.
804 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
805 lifetime analysis to overwrite closed-over variables (lp#681092).
806 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
807 were not handled correctly (lp#713063).
808 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
810 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
811 mistake. (lp#667297).
812 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
813 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
814 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
815 unintern the wrong symbol with the same name. (lp#693796)
816 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
817 making it possible to restore the initial table if it has been messed up.
820 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
821 * enhancement: ~/ and ~user/ are treated specially in pathnames.
822 Refer to documentation for details.
823 * enhancement: ASDF has been updated to version 2.010.
824 * optimization: mutated closed-over variables that are only accessed by
825 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
826 declared to be DYNAMIC-EXTENT) are stored directly in their containing
827 stack frame, rather than allocating a VALUE-CELL (lp#586103).
828 * optimization: UNWIND-PROTECT cleanup functions are now declared
830 * bug fix: backtracing function with &REST arguments now shows the full
831 argument list. (lp#310173)
832 * bug fix: return types for functions with complex lambda-lists are now
833 derived properly (lp#384892)
834 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
835 long string arguments slowed the compiler down to a crawl.
836 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
837 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
838 in the DEFMETHOD body.
839 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
840 messages, being instead replaced with the corresponding function name.
841 * bug fix: don't derive overly complex unions of numeric types for arithmetic
842 operators. (lp#309448)
844 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
845 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
846 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
847 * enhancement: ALLOCATION-INFORMATION also provides the page the object
849 * enhancement: default dynamic-space size can be configured at build-time
850 without touching source, using the --dynamic-space-size argument to make.sh.
851 * enhancement: DESCRIBE recognizes symbols naming optimization policy
852 qualities, and mentions ALWAYS-BOUND declarations.
853 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
855 * enhancement: ASDF has been updated to 2.009.
856 * enhancement: the system detects known type-erros in calls better,
857 signalling a full warning about violated proclaimed FTYPEs and violations
858 of derived FTYPEs within the same file, including self-calls.
859 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
860 * optimization: constant-folding exploits numeric and character types, in
861 addition member types.
862 * optimization: numeric, character and member types that are inhabited by
863 exactly one value are tested with EQL.
864 * optimization: more conditional branches are eliminated during IR1.
865 Branches are simplified before performing if/if-conversion, and simple
866 equivalent branches (that only read the same constant or variable) are
868 * improvements to the Windows port:
869 ** change: canonical unparsing form for pathname namestrings now uses / as
870 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
871 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
872 on Windows. (thanks to Kalyanov Dmitry)
873 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
875 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
876 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
877 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
878 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
880 * bug fix: interrupts arriving during CL:OPEN caused an error.
881 * bug fix: overeager character buffering could cause input to block
882 spuriously when reading from a pipe (lp#643686)
883 * bug fix: more efficient timer expiry should avoid starvation on systems
884 where number of SIGALRMs per second is restricted. (lp#375515)
885 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
886 * bug fix: compile-times no longer scale linearly with the size of
887 quoted lists in source-code. (lp#654289)
888 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
889 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
890 so badly. (lp#654485)
891 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
892 an error for eg. STRUCTURE. (lp#458015)
893 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
894 (lp#613871, thanks to Roman Marynchak)
895 * bug fix: more reliable &REST list type derivation. (lp#655203)
896 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
897 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
898 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
899 also declared NOTINLINE. (lp#655581)
900 * bug fix: the compiler could attempt to emit constant left shifts of
901 greater value than n-word-bits. (lp#309063)
902 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
903 type information for the function being set. (lp#659220)
904 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
905 containing self-calls were recompiled with a new signature, and failed
906 to warn when a self-call using the old signature was left in. (lp#655126)
907 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
908 :DEFAULT when the default external had character size other than 8 bits.
910 * bug fix: derived types of functions in the same file were implicitly
911 trusted, leading to potential heap corruption when those function were
912 defined incompatibly. (lp#657499)
913 * bug fix: existing ASDF source registries are ignored when building
915 * bug fix: short-form DEFSETF checks that the second argument is a symbol
916 (lp#655824, thanks to Roman Marynchak)
917 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
918 package-lock violation was detected. (lp#660752)
919 * bug fix: the system can store different docstrings for a single function
920 under different names. (lp#661631, regression from 1.0.29.24)
921 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
922 properly. (lp#384801)
923 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
924 of specified length could confuse the type derivation in unsafe code.
926 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
927 fork with multiple Lisp threads running is made on every platform,
928 not just Darwin. (lp#451111)
929 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
930 around when core was saved, which could cause undefined behaviour when the
932 * bug fix: Allow UNTRACE of functions that are no longer defined
933 (lp#667657, thanks to Attila Lendvai)
934 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
935 compile-time warning (lp#664373, thanks to Stas Boukarev)
937 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
938 * incompatible change: FD-STREAMS no longer participate in the serve-event
939 event-loop by default. (lp#316072)
940 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
941 affects streams from CL:OPEN.
942 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
943 default, but this is liable to change: applications needing serve-event
944 for socket streams should explicitly request it using :SERVE-EVENTS T
946 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
948 * enhancement: CLOS effective method functions and defclass slot typechecking
949 function now have debug names for use in backtraces and profiles.
950 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
952 * enhancement: symbols are printed using fully qualified names in several
953 error and warning messages which are often associated with package
954 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
955 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
956 thanks to Andrew Golding)
957 * bug fix: reading /proc files on Linux works. (lp#425199)
958 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
960 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
961 breaking code that tried to write the value of a printer control variable.
962 (lp#581564, thanks to Stas Boukarev)
963 * bug fix: WRITE compiler macro did not handle output stream designators
964 correctly. (lp#598374, thanks to Stas Boukarev)
965 * bug fix: better availability of names of foreign functions in backtraces
966 on Linux. (lp#626962, thanks to Stas Boukarev)
967 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
968 lp#627581, thanks to Josh Elsasser and Jim Wise)
969 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
970 thanks to Josh Elsasser)
971 * bug fix: using aliases for builtin classes as defmethod specializers
972 without adding DEFTYPEs for them works. (lp#618387)
973 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
975 * bug fix: legally dynamic-extent lists and vectors used as
976 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
977 * bug fix: inline-expansion creating references to dead lambda-variables
978 (lp#454681, thanks to Alexey Dejneka)
979 * bug fix: better error message for bogus numerical arguments to RANDOM.
980 (lp#598986, thanks to Stas Boukarev)
981 * bug fix: the compiler occasionally inlined references from incompatible
982 environments occurs. (lp#308951)
983 * bug fix: the compiler threw an error when trying to compile a local
984 function (labels or flet) known to take a specialized complex argument.
985 (not in launchpad, reported by sykopomp in #lispgames)
986 * bug fix: package-locks failed to protect against compile-time effects of
987 DEFUN when the symbol previously had a macro definition. (lp#576637)
988 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
989 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
990 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
991 * bug fix: evaluation in debugger REPL works using the global context when
992 in frames that do not have sufficient debug information.
993 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
995 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
997 * bug fix: interrupt taking longer than the requested period caused SLEEP
998 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
1000 changes in sbcl-1.0.42 relative to sbcl-1.0.41
1002 ** Cross-compilation host is now specified to make.sh using
1003 command-line argument --xc-host=<command> instead of a positional
1004 argument. (thanks to Daniel Herring)
1005 ** Install location can be specified to make.sh using command-line
1006 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
1007 * optimization: The default implementation of
1008 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
1009 * enhancement: Explicit memory barrier operations are now available for use
1010 by multithreaded code. See documentation for details.
1011 * enhancement: Experimental support for threading on Linux/PPC.
1012 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
1013 * bug fix: EXPT signals an error if first argument is a zero and second
1014 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
1015 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
1016 (lp#576594, thanks to Roman Marynchak)
1017 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
1018 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
1020 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
1021 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
1022 cached, leading to many fewer expensive calls to
1023 COMPUTE-APPLICABLE-METHODS.
1024 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
1025 CLASS argument, search for and call an appropriate optimized ctor function
1027 * bug fix: WRITE always returns the correct value.
1029 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
1030 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
1031 * bug fix: Name conflicts between symbols passed as arguments to a single
1032 call to IMPORT no longer add multiple symbols with the same name to the
1033 package (detectable via DO-SYMBOLS).
1034 * bug fix: support building without the dlshim on darwin x86 and x86-64
1036 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
1038 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
1039 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
1041 * bug fix: linkage-table entries on PPC now no longer overflow their
1042 space allocation (potentially causing crashes if they are written out
1044 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
1045 platforms, preventing the GC from seeing stale pointers on the control
1046 stack in subsequent GCs (which would, and does, break invariants).
1047 * bug fix: 32-bit unicode external formats now work on big-endian systems.
1048 * bug fix: Literal characters with code points greater than about 32767
1049 now work on PPC UNICODE builds.
1050 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
1051 high order bits are explicitly cleared out. In some contrived situations,
1052 this could lead to wrong results in mixed real/complex float arithmetic.
1053 * bug fix: Fix function/macro redefinition warnings when building with
1054 clisp. (lp#576787, thanks to Josh Elsasser)
1055 * new platform: experimental support for ppc/openbsd (thanks to Josh
1057 * bug fix: Floating-point traps now work on ppc/linux.
1059 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
1060 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
1061 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
1062 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
1063 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
1064 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
1065 SB-THREAD:GRAB-MUTEX.
1066 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
1067 contain additional data structures and tools for concurrent programming;
1068 at the moment it contains a lock-free queue, and a lock-free mailbox
1070 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
1071 GET-MUTEX but takes &key rather than &optional parameters. Also added
1072 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
1074 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
1075 SB-THREAD:WAIT-ON-SEMAPHORE.
1076 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
1078 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
1079 conditions to defer the deadline for forever.
1080 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
1082 * enhancement: errors from NO-APPLICABLE-METHOD and
1083 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
1084 generic function call.
1085 * enhancement: SB-BSD-SOCKET improvements
1086 ** sockets and socket streams now have a more informative printed
1087 representation based on the corresponding SOCKET-NAME and
1089 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
1091 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
1092 CL:CLOSE when appropriate, and no longer disassociates the stream
1093 from the socket if close failed. (lp#543951)
1094 * improvements to the instrumenting profiler
1095 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
1096 ** optimization: counters no longer use locks for the overflow mode.
1097 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
1098 incurred an off-by-one miscount.
1099 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
1100 * enhancement: improved DEFMETHOD pretty-printing.
1101 * enhancement: perform range reduction when arguments are too large for
1102 x87's transcendentals (instead of returning 0). (lp#327192)
1103 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
1104 some of CL-PPCRE's macros. (lp#570079)
1105 * enhancement: our machine code is slightly less hostile to valgrind on
1107 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
1108 to Robert Swindells and Aleksej Saushev)
1109 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
1110 * bug fix: a rare case of startup-time page table corruption.
1111 * bug fix: a semaphore with multiple waiters and some of them unwinding due
1112 to timeouts could be left in an inconsistent state.
1113 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
1114 * bug fix: misoptimization of multiplication by one in
1115 (SB-C::FLOAT-ACCURACY 0) policies.
1116 * bug fix: miscounts in SB-PROFILE.
1117 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
1118 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
1119 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
1120 up itself" (March 2010) for further details.
1121 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
1122 against length of the list if the element is found before the specified
1123 END is reached. (thanks to Alec Berryman, lp#554385)
1124 * bug fix: errors signalled during package graph modification no longer
1125 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
1126 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
1127 :SB-DOC feature. (lp#552564)
1128 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
1129 * bug fix: more robust runtime executable path detection. (lp#375549)
1130 * bug fix: GCD always returns positive values. (lp#413680)
1131 * bug fix: Converting division to multiplication by reciprocal handles
1133 * bug fix: We were too eager in eliding range reduction tests on x87.
1134 The maximal magnitude is 2^63, not 2^64.
1135 * bug fix: Transforms for TRUNCATE don't die when the result is completely
1137 * bug fix: Maybe restore buildability on Alpha.
1138 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
1140 * bug fix: RANDOM-STATE can be printed readably again.
1141 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
1142 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
1143 types) could result in type mismatches during compilation.
1145 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
1146 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
1147 stack frame thrown from.
1148 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
1149 compiler optimization qualities inside dynamic extent of its body.
1150 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
1151 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
1153 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
1154 constraint propgation, allowing better compilation eg. when used to
1155 access structures with WITH-SLOTS. (lp#520366)
1156 * optimization: the compiler is now more aware of the type of the underlying
1157 storage vector for multidimensional simple arrays resulting in better code
1158 for accessing such arrays.
1159 * optimization: passing NIL as the environment argument to TYPEP no longer
1160 inhibits optimizing it. (lp#309788)
1161 * optimization: more efficient register usage when handling single-float
1162 arguments on x86-64. (thanks to Lutz Euler)
1163 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
1164 pre-allocated temporary vectors. (lp#496249)
1165 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
1166 in :INITIAL-CONTENTS. (lp#523612)
1167 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
1168 functions. (lp#524707)
1169 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
1170 WITH-SLOTS usages during compilation.
1171 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
1172 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
1173 all x86oid platforms with :UD2-BREAKPOINTS target feature.
1174 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
1175 instruction (tested on x86oid linux with ud2-breakpoints).
1176 * bug fix: slam.sh now works on win32.
1177 * bug fix: better differences of numeric types. (lp#309124)
1178 * bug fix: arrays declared intersection and union types can have their
1179 upgraded element type derived. (lp#316078)
1180 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
1181 threads started during profiling. (lp#472499)
1182 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
1184 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
1185 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
1186 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
1187 values instead of signaling an error. (lp#309093)
1188 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
1190 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
1191 declarations (lp#497321)
1192 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
1193 and failed to detect circular lists (lp#452008)
1194 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
1196 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
1197 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
1198 due to it, so that handlers can run.
1199 * bug fix: reparsing undefined types if they have become defined since
1200 parsing. (lp#309128)
1201 * bug fix: missing &REST type in a proclamation for a function with both
1202 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
1203 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
1204 expanded calls (lp#542174)
1205 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
1206 than just at toplevel form.
1208 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
1209 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
1210 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
1211 but work on type specifiers.
1212 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
1213 to name a type specifier.
1214 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
1215 specifier is valid where "valid" basically means "would be accepted as
1216 second argument of TYPEP".
1217 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
1218 returns the function's declared, or derived FTYPE.
1219 * new feature: SB-POSIX now supports accessing the d_ino member of
1220 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
1221 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
1222 provide for seeding a RANDOM-STATE object with user-provided data or
1223 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
1224 attempt to initialize the returned state from the operating system's
1225 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
1226 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
1227 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
1228 * bug fix: Fix grammar and style issues for the docstrings of
1229 printer-related variables and functions. (Thanks to mon_key; launchpad
1231 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
1233 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
1234 in a row even though a handler defered the deadline long into the
1236 * bug fix: A deadline handler was run without interrupts enabled for a
1237 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1238 in infinitely spinning, non-killable threads.
1239 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1240 before reaching the erring stack frame.
1241 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1242 real power. (launchpad bug lp#525949)
1243 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1244 GENCGC platforms. (launchpad bug lp#529014)
1245 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1246 (launchpad bug lp#525916)
1247 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1248 (Thanks to Robert Goldman)
1250 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1251 * optimization: ROUND with a single single-float or double-float argument
1252 is properly inlined when possible.
1253 * optimization: Slightly better code is generated for integer<->float
1254 conversions and for single-float<->double-float conversions on x86-64.
1255 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1256 code for 32-bit and 64-bit rotations on x86-64.
1257 * bug fix: The install script changes the ownership of directories as well
1258 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1259 launchpad bug lp#508485)
1260 * bug fix: TRUNCATE with a single single-float or double-float argument is
1261 properly inlined when possible. (launchpad bug lp#489388)
1262 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1263 no longer causes a compiler error on x86 and ppc.
1264 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1265 always relative to *READTABLE* rather than the passed argument.
1267 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1268 * minor incompatible change: threading support is now enabled by default
1270 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1272 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1273 are now caught and reported just like errors during macroexpansion.
1274 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1275 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1276 * enhancement: ASDF systems can now depends on SB-QUEUE.
1277 * fixes and improvements related to Unicode and external formats:
1278 ** bug fix: error handling and restart usage in the ucs-2 external format
1280 ** there is now an implementation of the ucs-4 external format.
1281 ** the utf-16 and utf-32 external formats are supported.
1282 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1283 in the environment. setenv() and unsetenv() are also provided. (reported by
1284 Fare Rideau; launchpad bug lp#460455)
1285 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1286 loading. This ensures sensible errors for .FASL files from other
1287 implementations on case-insensitive filesystems. (reported by Willem
1288 Broekema; launchpad bug lp#489417)
1289 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1290 Willem Broekema; launchpad bug lp#489698).
1291 * bug fix: some minor code rearrangements to reenable warning-free building
1292 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1293 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1295 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1298 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1299 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1300 * improvement: support O_LARGEFILE access to files larger than 2GB on
1301 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1302 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1303 definitions for methods specializing on the passed class itself.
1304 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1305 definitions for methods specializing on the passed class itself, or on
1307 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1308 about itself during the build (e.g. for M-? in Slime), if this flag is
1309 enabled in customize-target-features.lisp. This will increase the core
1310 size by about 5-6mb, though, so it's mostly interesting to SBCL
1312 * new feature: various GENCGC tuning parameters have been experimentally
1313 documented and exported from SB-EXT. See documentation for details.
1314 * fixes and improvements related to Unicode and external formats:
1315 ** the Unicode character database has been upgraded to the
1316 Unicode 5.2 standard, giving names and properties to a number of new
1317 characters, and providing a few extra characters with case
1319 ** improvement: restarts for providing replacement input/output on coding
1320 errors for fd-stream external formats.
1321 ** improvement: where :<encoding> is a keyword corresponding to an
1322 external format the system supports, it is now possible to specify
1323 (:<encoding> :replacement <character>) as an external format which will
1324 automatically substitute <character> on encoding or decoding errors for
1325 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1327 ** improvement: the file streams underlying the standard streams (such as
1328 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1329 which uses the replacement mechanism to handle encoding errors,
1330 preventing various infinite error chains and unrecoverable I/O
1332 ** minor incompatible change: the utf-8 external format now correctly
1333 refuses to encode Lisp characters in the surrogate range (char-codes
1334 between #xd800 and #xdfff).
1335 ** fix a typo preventing conversion of strings into octet vectors
1336 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1338 ** fix a bug in the octet multibyte handling of decoding errors and the
1339 USE-VALUE restart. (launchpad bug lp#314939)
1340 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1341 restart on fd-stream decoding errors.
1342 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1343 error is near the end of file.
1344 ** fix a double-error case in unibyte octet conversions, when the first
1345 use of USE-VALUE is ignored.
1346 ** fix bugs in handling of undefined code points in unibyte encodings.
1347 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1348 streams after an UNREAD-CHAR.
1349 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1350 object is allocated in a boxed region of dynamic space.
1351 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1352 fork with multiple Lisp threads running is made, instead of going
1353 ahead with unpredictable consequences. (reported by Leslie Polzer)
1354 * bug fix: uses of slot accessors on specialized method parameters within
1355 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1356 error while finalizing the class. This fix may cause classes with slot
1357 accessors to be finalized later than previously. (reported by Lars Rune
1358 Nøstdal; launchpad bug lp#473699)
1359 * bug fix: restore buildability on the MIPS platform. (regression from
1360 1.0.30.38, reported by Samium Gromoff)
1361 * bug fix: inspecting closures is less likely to fail with a type error.
1362 * bug fix: no timer starvation when setting the system clock back.
1363 (launchpad bug lp#460283)
1364 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1365 standard pprint dispatch table as specified by CLHS.
1366 * bug fix: give CLISP a hint about a type declaration to enable it to build
1367 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1369 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1370 (reported by Attila Lendvai; launchpad bug lp#310132)
1371 * bug fix: distinguish in type specifiers between arrays that might be
1372 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1373 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1374 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1375 * bug fix: setting the value of a symbol-macro within a method in the
1376 presence of type declarations works properly again. (reported by Iban
1377 Hatchondo; launchpad bug lp#485019)
1379 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1380 * optimization: faster FIND and POSITION on strings of unknown element type
1381 in high SPEED policies. (thanks to Karol Swietlicki)
1382 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1384 * improvement: better error signalling for bogus parameter specializer names
1385 in DEFMETHOD forms (reported by Pluijzer)
1386 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1388 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1390 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1391 removes previous default initargs (reported by Lars Rune Nøstdal and
1393 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1394 lambda-lists. (reported by Peter Seibel)
1395 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1396 correctly when starting from an executable core without saved runtime
1397 options (reported by Faré Rideau, thanks to Zach Beane)
1398 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1399 an optimization note instead. (reported by Martin Cracauer)
1400 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1401 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1402 new process group if it doesn't need to share stdin with the sbcl
1403 process. (thanks to Leslie Polzer)
1404 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1405 (reported by Stanislaw Halik)
1407 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1408 * improvement: stack allocation is should now be possible in all nested
1409 inlining cases: failure to stack allocate when equivalent code is manually
1410 open coded is now considered a bug.
1411 * improvements related to Unicode:
1412 ** the Unicode character database has been upgraded to the
1413 Unicode 5.1 standard, giving names and properties to a number of new
1414 characters, and providing a few extra characters with case
1416 ** the system now recognizes and produces names for Unicode Hangul
1417 syllable characters.
1418 ** the EBCDIC-US external-format is now supported for octet operations
1419 (as well as for stream operations).
1420 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1421 be used to output toplevel compile-time effects into a separate .CFASL
1423 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1424 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1426 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1428 * optimization: division of floating point numbers by constants uses
1429 multiplication by reciprocal when an exact reciprocal exists.
1430 * optimization: multiplication of single- and double-floats floats by
1431 constant two has been optimized.
1432 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1433 sufficient type information is available. (thanks to Leslie Polzer)
1434 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1435 known structure objects are as efficient as defstruct generated accessors.
1436 * optimization: unused vector creation can now be optimized away.
1437 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1438 * improvement: a STYLE-WARNING is signalled when a generic function
1439 clobbers an earlier FTYPE proclamation.
1440 * improvement: the compiler is able to track the effective type of
1441 generic function across method addition and removal even in the
1442 absence of an explicit DEFGENERIC.
1443 * improvement: DESCRIBE now reports on symbols naming undefined
1444 but assumed or declared function as well.
1445 * improvement: recompilation of systems using SB-GROVEL now works
1446 (thanks to Leslie Polzer)
1447 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1448 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1450 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1451 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1452 well as user defined declaration names.
1453 ** VARIABLE-INFORMATION is now aware of alien variables.
1454 * improvement: improved address space layout on OpenBSD (thanks to Josh
1456 * improvement: pretty-printing of various Lisp forms has been improved
1457 (thanks to Tobias Rittweiler)
1458 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1459 unused were deleted in safe code. (reported by John Fremlin)
1460 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1462 * bug fix: some out-of-line array predicates were missing (reported by
1464 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1466 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1467 (thanks to Larry D'Anna)
1468 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1469 as well. (reported by Josh Elsasser)
1470 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1471 leading to possible attempts to delete the same file twice. See docstring
1472 on DELETE-FILE for details. (reported by John Fremlin)
1473 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1474 designator argument, rather than its truename. (reported by Luis
1476 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1477 information about some array types. (thanks to Luis Oliveira)
1478 * bug fix: moderately complex combinations of inline expansions could
1479 be miscompiled if the result was declared to be dynamic extent.
1480 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1481 form (+ <variable> <integer>) were miscompiled under certain
1483 * bug fix: in some cases no compiler note about failure to stack allocate
1484 was emitted, even if the objects were in fact heap allocated.
1485 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1486 allocation could cause objects users might reasonably expect to
1487 be heap allocated to be stack allocated.
1488 * bug fix: DESCRIBE signalled an error for generic functions under
1489 certain circumstances. (thanks to Leslie Polzer)
1490 * bug fix: Fixed spelling of an error message.
1492 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1493 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1494 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1495 of SB-THREAD:THREAD-ERROR-THREAD.
1496 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1497 * new feature: docstrings for local and anonymous functions are no longer
1498 discarded. (thanks to Leslie Polzer)
1499 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1500 values in other threads.
1501 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1502 about object allocation.
1503 * optimization: division of a real float by a complex float is implemented
1504 with a specialised code sequence.
1505 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1506 keywords is an order of magnitude faster.
1507 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1508 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1509 methods, and similarly for non-standard metaclass classes as long as there
1510 are no methods additional on MAKE-INSTANCE.
1511 * optimization: more efficient type-checks for FIXNUMs when the value
1512 is known to be a signed word on x86 and x86-64.
1513 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1514 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1516 * optimization: compiler is smarter about delegating argument type checks to
1518 * optimization: several character functions are now compiled somewhat more
1519 efficiently. (reported by Lynn Quam)
1520 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1521 * improvement: less unsafe constant folding in floating point arithmetic,
1522 especially for mixed complex/real -float operations.
1523 * optimization: constant double and single floats are stored in native
1524 unboxed format on x86[-64].
1525 * optimization: smarter code for arithmetic operations with constant floats,
1526 complex floats, or integers on x86[-64].
1527 * optimization: smarter code for conjugate/multiplication of float complexes
1528 and abs/negate of floats on x86-64.
1529 * optimization: more efficient complex float and real float operations on
1531 * improvement: complex float division is slightly more stable.
1532 * improvement: DESCRIBE output has been reworked to be easier to read and
1533 contains more pertinent information.
1534 * improvement: failure to provide requested stack allocation compiler notes
1535 provided in all cases (requested stack allocation not happening without a
1536 note being issued is now considered a bug.)
1537 * bug fix: SB-POSIX exports the documented types and functions
1538 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1539 types. (reported by "abhi")
1540 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1541 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1542 (thanks to Paul Khuong)
1543 * bug fix: looping around HANDLER-CASE could silently consume stack space
1544 on each iteration. (reported by "foobar")
1545 * bug fix: better error signalling when calls to functions seeking elements
1546 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1547 (reported by Tobias Rittweiler)
1548 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1549 directory components now works as it used to. (various prolems reported by
1550 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1551 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1552 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1553 * bug fix: bogus undefined variable warnings from fopcompiled references to
1554 global variables. (thanks to Lars Rune Nøstdal)
1555 * bug fix: foreign function names should now appear in backtraces on
1556 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1557 * bug fix: SETF compiler macro documentation strings are not discarded
1559 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1560 (thanks to Alex Plotnick)
1561 * bug fix: SLEEP accepts large integer arguments, truncating them to
1562 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1563 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1564 * bug fix: compiler notes for expensive slot type checks could be emitted
1565 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1567 changes in sbcl-1.0.29 relative to 1.0.28:
1568 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1569 https://bugs.launchpad.net/sbcl
1570 Bugs can be reported directly there, or by sending email to
1571 sbcl-bugs@lists.sourceforge.net
1572 (no subscription required.)
1573 * minor incompatible change: under weak type checking policy integer
1574 types are weakened less aggressively.
1575 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1576 allowed to return, which causes SBCL to quit with exit status 0. Previously
1577 if the function returned with a small integer return value, that value
1578 was accidentally reused as the exit status.
1579 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1580 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1581 :HASH-FUNCTION argument. Refer to user manual for details.
1582 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1584 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1585 microseconds since the Unix epoch on all platforms.
1586 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1587 allows the compiler to safely elide boundedness checks for special
1589 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1590 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1591 efficiency measure for threaded platforms, but also valueable in
1593 * new feature: UNC pathnames are now understood by the system on Windows.
1594 * optimization: the compiler uses a specialized version of FILL when the
1595 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1597 * optimization: accesses to potentially non-simple arrays where element type
1598 is known are 50% faster.
1599 * optimization: compiler now generates faster array typechecking code.
1600 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1602 * optimization: multidimensional array accesses in the absence of type
1603 information regarding array rank are approximately 10% faster due to
1604 open coding of ARRAY-RANK.
1605 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1606 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1608 * optimization: result of call to VECTOR can now be stack allocated.
1609 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1610 as long as the resulting array is one-dimensional and has a known
1611 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1612 length of the list matches the known length of the vector does not
1613 allocate the list as an intermediate step. Ditto for VECTOR and simple
1615 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1616 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1617 known element type, and is known to be simple and one dimensional.
1618 * improvement: SBCL now emits a compiler note where stack allocation was
1619 requested but could not be provided (not in all cases, unfortunately)
1620 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1621 * improvement: pretty-printing loop has been implemented properly. (thanks
1622 to Tobias Rittweiler)
1623 * documentation: CLOS slot typechecing policy has been documented.
1624 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1625 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1626 pointer, leading to memory faults. (thanks to Bart Botta)
1627 * bug fix: better floating point exception handling on x86/OpenBSD.
1628 (thanks to Josh Elsasser)
1629 * bug fix: exit status from QUIT when called under --script was lost
1630 (reported by Hubert Kauker)
1631 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1632 same implementation of FILL to initialize the array, even if a more
1633 efficient one was available (reported by Stas Boukarev, thanks to
1635 * bug fix: potential miscompilation of array stack allocation on x86 and
1636 x86-64. (reported by Time Tossavainen)
1637 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1638 result in their subforms being treated as top level forms. (reported by
1640 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1641 than a machine register could leave garbage in the high bits of the
1642 result register (bug 316325).
1643 * bug fix: disable address space randomization Linux/x86-64 as well,
1644 not just x86-64. (reported by Ken Olum)
1645 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1646 generate incorrect code.
1647 * bug fix: #201; type inference for CONS and ARRAY types could derive
1648 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1649 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1650 could not be assigned to or bound with PROGV. (reported by Lorenz
1652 * bug fix: the value of CL:- in the inspector was the previous expression
1653 evaluated rather than the expression being evaluated.
1654 * bug fix: constants can no longer be locally declared special.
1655 * bug fix: signals delivered to threads started from foreign land (read:
1656 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1657 thread by blocking all signals and resignalling.
1658 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1659 from :INITFORM, if any.
1661 changes in sbcl-1.0.28 relative to 1.0.27:
1662 * a number of bugs in cross-compilation have been fixed, with the ultimate
1663 result that building under (at least) clisp should be much more reliable.
1664 * minor incompatible changes: echo-streams now propagate unread-char to the
1665 underlying input stream, and no longer permit unreading more than one
1667 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1668 frames, allowing for instance more reliable backtraces.
1669 * improvement: the debugger REPL can now reference lexical variables
1670 by name directly for code compiled with (DEBUG 3).
1671 * improvement: errors from malformed declarations now have better source
1672 paths associated with them. (thanks to Tobias Rittweiler)
1673 * optimization: faster local calls on x86/x86-64
1674 * bug fix: some error messages for out-of-bound array indexes confused the
1675 index and the bound. (thanks to Stas Boukarev)
1676 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1678 * bug fix: running regressions tests in shells without OSTYPE set now works.
1679 (reported by Harald Hanche-Olsen)
1680 * bug fix: more robust static space exhaustion signalling from
1681 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1682 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1683 docstring away instead of storing it under names such as (LAMBDA (X)).
1684 (reported by Leslie Polzer)
1685 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1686 (thanks to Ole Arndt for the patch)
1687 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1688 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1689 potentially-invalid effective methods in its cache.
1690 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1691 instances as well (thanks to Paul Khuong)
1692 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1693 SB-POSIX:WAITPID and their C equivalents.
1694 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1696 changes in sbcl-1.0.27 relative to 1.0.26:
1697 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1698 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1699 * improvement: the system either recovers from stack exhaustion or dies
1700 properly as opposed to leaving the user uncertain of whether the handler
1701 trampled on some random memory next to the stack or having to rely on
1702 --lose-on-corruption (which is still a good idea to use in production
1703 because stack exhaustion can happen in signal handlers which will likely
1705 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1706 1.0.25.37, reported by Harald Hanche-Olsen)
1707 * bug fix: work around signal delivery bug in darwin (regression from
1708 1.0.25.44, reported by Sidney Markowitz)
1709 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1711 changes in sbcl-1.0.26 relative to 1.0.25:
1712 * incompatible change: an interruption (be it a function passed to
1713 INTERRUPT-THREAD or a timer function) runs in an environment where
1714 interrupts can be enabled. The interruption can use
1715 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1716 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1717 potentially running out of stack. Keep in mind that in the absence
1718 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1719 acquiring a lock can enable interrupts.
1720 * incompatible change: GC-OFF and GC-ON are removed, as they were
1721 always unsafe. Use WITHOUT-GCING instead.
1722 * new feature: runtime option --disable-ldb
1723 * new feature: runtime option --lose-on-corruption to die at the
1724 slightest hint of possibly non-recoverable errors: running out of
1725 memory, stack, alien stack, binding stack, encountering a memory
1726 fault, etc. In the absence of --lose-on-corruption a warning is
1728 * enhancement: detect binding stack exhaustion
1729 * enhancement: detect alien stack exhaustion on x86/x86-64
1730 * improvement: generally more stable and reliable interrupt handling
1731 * improvement: there is a per thread interruption queue,
1732 interruptions are executed in order of arrival
1733 * improvement: a repeating timer reschedules itself when the it has
1734 finished, but expiration times are spaced equally. If an
1735 expiration time is in the past it will trigger after a short grace
1736 period that may give a chance to other things to run.
1737 * optimization: slightly faster gc on multithreaded builds
1738 * optimization: faster WITHOUT-GCING
1739 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1740 important locks so that the debugger/handler doesn't produce
1741 recursive errors or deadlock.
1742 * bug fix: real-time signals are not used anymore, so no more
1743 hanging when the system wide real-time signal queue gets full.
1744 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1746 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1747 * bug fix: fix random memory faults related to interrupts on alpha
1748 * bug fix: fix random memory faults related to interrupts on sparc
1749 * bug fix: fix deadlocks related to starting threads
1750 * bug fix: fix deadlines on locks on futex platforms
1751 * bug fix: restore errno in signal handlers
1752 * bug fix: fix deadlocks related to hash tables
1753 * bug fix: fix deadlocks in pcl
1755 changes in sbcl-1.0.25 relative to 1.0.24:
1756 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1757 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1758 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1759 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1760 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1761 better name and does not return values so stale on multiprocessor systems.
1762 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1764 * improvement: unithread builds keep track of MUTEX-VALUE.
1765 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1766 stream anymore making it thread safe to have a concurrent reader and
1767 a writer, for instance, in a pipe.
1768 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1769 arguments, making compiler-macros for SETF-functions able to inspect
1770 their constant arguments.
1771 * improvement: COMPILE-FILE reports times with millisecond accuracy
1772 (thanks to Luis Oliveira)
1773 * optimization: CHAR-CODE type derivation has been improved, making
1774 TYPEP elimination on subtypes of CHARACTER work better. (reported
1775 by Tobias Rittweiler, patch by Paul Khuong)
1776 * bug fix: setting alien structure fields of type struct by value now
1777 computes the right offset for the memory copy.
1778 * bug fix: compilation problem involving inlined calls to aliens with
1779 result type VOID. (reported by Ken Olum)
1780 * bug fix: #235a; sequential inline expasion in different policies no
1781 longer reuses the functional from the previous expansion site.
1782 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1783 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1784 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1785 cause an implied type redefinition. Regression from 1.0.21.29.
1786 * bug fix: sign-extension of small signed return values now works with C
1787 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1788 * improvements to the Windows port:
1789 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1790 Westfold, thanks to Rudi Schlatte)
1792 changes in sbcl-1.0.24 relative to 1.0.23:
1793 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1794 vector of a multidimensional SIMPLE-ARRAY.
1795 * new feature: the system now signals a continuable error if standard
1796 readtable modification is attempted. (thanks to Tobias Rittweiler)
1797 * new feature: DIRECTORY has been extended with a non-standard keyword
1798 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1799 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1800 has been robustified and documented better. (thanks to Robert Goldman)
1801 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1802 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1803 * tradeoff: constant FORMAT control strings are now compiled unless
1804 SPACE > SPEED (previously only when SPEED > SPACE.)
1805 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1807 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1809 * bug fix: lexical type declarations are now correctly reported by
1810 SB-CLTL2. (reported by Larry D'Anna)
1811 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1812 using UTF-8 as external format. (thanks to Luis Oliveira)
1813 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1814 are signalled correctly. (thanks to Stas Boukarev)
1815 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1816 designator. (thanks to Tobias Rittweiler)
1817 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1818 designator, and returns T instead of the function. (thanks to
1820 * bug fix: direct superclasses of STANDARD-CLASS and
1821 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1822 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1823 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1824 when no class with the named slot yet exists no longer causes a
1825 compile-time style-warning.
1826 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1827 in safe code. (reported by Didier Verna)
1828 * bug fix: #430; nested structure constructors can stack allocate.
1829 * bug fix: on some 64-bit platforms dynamic space size was truncated
1830 to #xffff0000 bytes. (reported by Benjamin Lambert)
1831 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1832 REPL unusable. (reported by Daniel Herring)
1833 * bug fix: return values of READ-SEQUENCE did not take :START into
1834 account on file streams, regressions since 1.0.12.22. (reported by
1835 Thomas Russ, patch by Paul Khuong)
1836 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1837 method specializer used to confuse permuation vector optimization.
1838 * bug fix: system inserted bogus implicit type declarations for local
1839 special variables in DEFMETHOD bodies.
1840 * bug fix: #354; duplicated frames in backtraces due to
1841 non-tail-call-optimized XEPs to functions with return type NIL
1843 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1844 initializes structure object slots according to DEFSTRUCT initforms,
1845 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1846 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1847 (reported by Bruno Haible and Stephen Wilson)
1848 * bug fix: #395; fill-pointer output streams used now support
1849 element-type BASE-CHAR as well.
1850 * bug fix: compiler error when attempting to derive return value of
1851 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1853 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1855 * bug fix: Mac OS X binaries should now be portable between Leopard
1858 changes in sbcl-1.0.23 relative to 1.0.22:
1859 * enhancement: when disassembling method functions, disassembly
1860 for the associated fast function is also produced.
1861 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1863 * optimization: printing with *PRINT-PRETTY* true is now more
1864 efficient as long as the object being printed doesn't require
1865 special handling by the pretty printer.
1866 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1867 now interact correctly with type declarations.
1868 * partial bug fix: PCL detects infinite recursion during wrapper
1869 validation. (thanks to Attila Lendvai)
1870 * bug fix: #426; nested function calls are inlined properly.
1871 Previously if FOO was an inline function, in calls of the form
1872 (FOO (FOO ...)) the outer call was not inlined.
1873 * bug fix: long long arguments passed in registers to alien
1874 functions on PowerPC Linux and NetBSD are now handled correctly
1875 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1877 changes in sbcl-1.0.22 relative to 1.0.21:
1878 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1879 for the shared object in the current directory, but passes the native
1880 namestring of the designated pathname to the operation system's shared
1881 object loading function as-it.
1882 * minor incompatible change: --disable-debugger toplevel option now takes
1883 effect before processing of initialization files and --eval or --load
1885 * new feature: new commandline argument: --script, which supports
1886 shebang lines. See documentation for details. (based on work by
1888 * new feature: SAVE-LISP-AND-DIE can save current values of
1889 --dynamic-space-size and --control-stack-size in the executable core,
1890 causing it to skip normal runtime option processing. See documentation
1891 for details. (thanks to Zach Beane)
1892 * enhancement: inoccous calls to EVAL or generic functions dispatching
1893 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1894 * enhancement: the system no longer resignals errors from --load and
1895 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1896 associated with the original error to be lost. (thanks to Ariel
1898 * enhancement: :DONT-SAVE keyword argument has been added to
1899 LOAD-SHARED-OBJECT for controlling interaction with
1900 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1901 the effects of an earlier LOAD-SHARED-OBJECT call.
1902 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1903 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1904 provided. (reported by Cedric St-Jean)
1905 * bug fix: circularity handling in the reader did not treat raw
1906 structure slots correctly. (reported by Cedric St-Jean)
1907 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1908 file descriptors when there were none.
1909 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1910 was broken. (reporteed by Willem Broekema)
1911 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1912 pathnames without a directory.
1913 * bug fix: COMPILE-FILE did not warn about undefined variable
1914 references at toplevel, and LOAD of the resulting fasl did
1915 not signal an error.
1916 * bug fix: functions with non-required arguments used to end up with
1917 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1918 * bug fix: redefining a function with non-required arguments didn't
1919 update the system's knowledge about its call signature properly.
1920 * bug fix: fixed #431; incompatible alien record type redefinitions
1921 are detected and handled. (reported by Neil Haven)
1922 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1923 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1925 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1926 after alien stack frames.
1927 * bug fix: strings passed to mk{s,d}temp lacked null termination
1929 changes in sbcl-1.0.21 relative to 1.0.20:
1930 * new feature: the compiler is able to track the effective type of a
1931 generic function across method addition and removal.
1932 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1933 appropriately typed structure slots without locking.
1934 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1935 information like those gathered by TIME using a programming-friendly
1937 * new feature: TIME reports time taken even if the form performs a
1938 non-local transfer of control.
1939 * enhancement: reduced conservativism on GENCGC platforms: on
1940 average 45% less pages pinned (measured from SBCL self build).
1941 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1942 mutate constant symbols or violate declaimed type of the symbol.
1943 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1944 sleeping on the semaphore in heavily contested semaphores.
1945 * bug fix: semaphores and condition variables were not interrupt
1947 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1948 owned by other threads anymore.
1949 * bug fix: FIND on lists called KEY outside the specified
1950 subsequence. (reported by budden)
1951 * bug fix: LOG doesn't use single-float intermediate results when
1952 given mixed integer and double-float arguments, leading to better
1953 precision. (reported by Bob Felts)
1954 * bug fix: LOG with base zero returned values of inconsistent type.
1956 changes in sbcl-1.0.20 relative to 1.0.19:
1957 * minor incompatible change: OPTIMIZE qualities
1958 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1959 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1960 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1961 * documentation: some slot access efficiency guidelines have been
1962 added to the user manual.
1963 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1964 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1965 as ASSOC and MEMEBER.
1966 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1967 to more efficient EQ-comparison versions more often.
1968 * optimization: enhanced derivation of DOLIST iteration variable type
1970 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1972 * optimization: runtime lookup of function definitions can be
1973 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1974 * optimization: compiler is able to derive the return type of
1975 (AREF (THE STRING X) Y) as being CHARACTER.
1976 * optimization: CLRHASH on empty hash-tables no longer does pointless
1977 work. (thanks to Alec Berryman)
1978 * optimization: REPLACE deftransforms don't punt when :START1 or
1980 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1981 no longer emits a code deletion note. (reported by Andrew
1983 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1984 functions with an odd number of &OPTIONAL arguments, a &REST
1985 argument, and one or more &KEY arguments at the call site.
1986 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1987 arguments appeared at call sites as well.
1988 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1989 READ-LINE &co can no longer read from them afterwards. (reported
1991 * bug fix: fixed #427: unused local aliens no longer cause compiler
1992 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1994 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1995 alien-stack leakage. (reported by Andy Hefner)
1996 * bug fix: PROGV signals an error when an attempt to violate declared
1997 type of a variable or bind a constant is made.
1998 * bug fix: SET signals an error when an attempt to violate declared
1999 type of a variable is made.
2000 * bug fix: restart computation during the execution of a restart
2001 test function no longer causes infinite recursion. (reported by
2003 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
2004 signals an error. (thanks to Pierre Mai)
2005 * bug fix: EXPORT left symbol unexported in conflict situations.
2006 (thanks to Michael Weber)
2007 * bug fix: correctly handle name conflicts involving CL:NIL.
2008 (thanks to Michael Weber)
2009 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
2010 conflicts arising from USEing package with conflicting symbols
2011 correctly. (thanks to Michael Weber)
2013 changes in sbcl-1.0.19 relative to 1.0.18:
2014 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
2015 warnings that go otherwise unhandled will be muffled if they are
2016 of the type that's the value of this variable.
2017 * optimization: stack allocation is slightly more efficient on x86
2019 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
2020 where a raw slot always is initialized using the initform whose
2021 type is not know sufficiently well a compile-time are now compiled
2022 correctly. (reported by John Morrison)
2023 * bug fix: compiler no longer makes erronous assumptions in the
2024 presence of non-foldable SATISFIES types.
2025 * bug fix: stack analysis missed cleanups of dynamic-extent
2026 arguments in non-let-converted calls to local functions.
2027 * improvements to the Windows port:
2028 ** adjusted address spaces for building on both Win32 and
2029 Win64. (thanks for John Connors)
2030 * fixed some bugs revealed by Paul Dietz' test suite:
2031 ** interval arithmetic during type derivation used inexact integer
2032 to single-float coercions.
2033 ** arithmetic operations involving large integers and single
2034 floats give the same results in compiled and interpreted code.
2035 ** deriving the result type of COERCE no longer signals an error
2036 if the derived type of the second argument is a MEMBER type
2037 containing invalid type specifiers.
2038 ** ADJOIN with constant NIL as second argument works correctly.
2039 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
2041 changes in sbcl-1.0.18 relative to 1.0.17:
2042 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
2043 profiles only the current thread.
2044 * minor incompatible change: changes to SYMBOL-VALUE of constants
2045 defined with DEFCONSTANT now signal an error.
2046 * enhancement: SB-SPROF now has support for wallclock profiling,
2047 and is also able to profile specific threads. REPORT output
2048 has also additional sorting options.
2049 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
2051 * optimization: structure allocation has been improved
2052 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
2053 ** out of line constructors are ~10% faster.
2054 ** inline constructors are ~15% faster.
2055 ** inline constructors are capable of dynamic extent allocation
2056 (generally on x86 and x86-64, in some cases on other platforms
2058 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
2060 * optimization: file compiler is now able to coalesce non-circular
2061 lists, non-base strings, and bit-vectors. Additionally, constants
2062 are never referenced through SYMBOL-VALUE at runtime.
2063 * optimization: code defining methods on PRINT-OBJECT (and other
2064 generic functions in the COMMON-LISP package) now loads faster.
2065 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
2067 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
2068 fasl is now deleted. (reported by Attila Lendvai)
2069 * bug fix: READ-LINE always returned NIL for the last line in files.
2070 (reported by Yoshinori Tahara)
2071 * bug fix: more accurate disassembly annotations of foreign function
2072 calls. (thanks to Andy Hefner)
2073 * bug fix: trimming non-simple strings and non-string string
2074 designators when the there is nothing to trim works properly.
2075 (thanks to James Knight)
2076 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
2077 (thanks to Travis Cross)
2078 * fixed some bugs revealed by Paul Dietz' test suite:
2079 ** NIL is a valid function name (regression at 1.0.13.38)
2080 ** FILL on lists was missing its return value (regression at 1.0.12.27)
2081 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2082 fill pointers properly (regression at 1.0.12.23)
2083 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
2084 displacement indices properly (regression at 1.0.12.23)
2086 changes in sbcl-1.0.17 relative to 1.0.16:
2087 * temporary regression: user code can no longer allocate closure
2088 variable storage on stack, due to bug 419 without explicitly
2089 requesting it. Please consult sbcl-devel for advice if you need to
2090 use this feature in the meanwhile.
2091 * new feature: runtime argument --control-stack-size can be used to
2092 adjust thread default control stack size.
2093 * enhancement: improved TIME output
2094 ** all times are reported using the measured accuracy (milliseconds
2095 for real and GC times, microseconds for everything else.)
2096 ** processor cycle counts on x86 and x86-64.
2097 ** interpreted forms are counted for both evaluator modes.
2098 ** number of lambdas converted by the compiler is reported.
2099 ** CPU percentage report (computed from real and total run time.)
2100 ** more comprehensive run time reporting, using a condenced format
2101 ** interperted form, lambda, and page fault counts are omitted
2103 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
2105 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
2106 * optimization: two argument forms of LAST are upto ~10% faster
2107 in normal SPEED policies.
2108 * optimization: NCONC no longer needs to heap cons its &REST list
2109 in normal SPEED policies.
2110 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
2111 to Sidney Markowitz)
2112 * bug fix: UNION and NUNION work with :TEST-NOT once more,
2113 regression since 1.0.9.1. (thanks to Eric Marsden)
2114 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
2115 since 1.0.15.36. (thanks to Paul Khuong)
2116 * bug fix: LAST when always returned the whole list when given a bignum
2117 as the second argument.
2118 * bug fix: dynamic extent allocation of nested lists and vectors
2119 could leak to otherwise accessible parts.
2120 * bug fix: invalid optimization of heap-allocated alien variable
2122 * bug fix: fasl header checking is less vulnerable to different
2123 platform word lengths.
2124 * bug fix: more correct assembler syntax for GNU binutils
2125 2.18.50.0.4 support. (thanks to Marijn Schouten)
2126 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
2128 * bug fix: the fopcompiler can handle LOCALLY forms (with no
2129 declarations) successfully. (reported by Attila Lendvai)
2131 changes in sbcl-1.0.16 relative to 1.0.15:
2132 * minor incompatible change: revert the changes to sb-posix's error
2133 signaling added in 1.0.14.
2134 * minor incompatible change: change PROBE-FILE back to returning
2135 NIL whenever we can't get a truename, as was the case before 1.0.14.
2136 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
2137 inherits from ERROR instead of just CONDITION.
2138 * new feature: SB-INTROSPECT can provide source locations for instances
2139 as well. (thanks to Tobias Rittweiler)
2140 * optimization: binding special variables now generates smaller code
2141 on threaded platforms.
2142 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
2143 and cases where no :TEST is given but the compiler can infer that
2144 the element to search is of type (OR FIXNUM (NOT NUMBER)).
2145 * optimization: better LOGNOT on fixnums.
2146 * optimization: modular arithmetic for a particular requested width
2147 is implemented using a tagged representation unless a better
2148 representation is available.
2149 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
2150 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
2151 for wellformedness and returns a specialized vector. (reported by
2152 Francois-Rene Rideau)
2153 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
2154 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
2155 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
2156 unscheduling timer at the same time as another timer fires.
2157 * bug fix: don't reschedule timers for dead threads.
2158 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
2159 * bug fix: copying output from RUN-PROGRAM to a stream signalled
2160 bogus errors if select() was interrupted.
2161 * enhancement: add support for fcntl's struct flock to SB-POSIX.
2163 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
2164 * enhancement: cleaner backtraces for interactive interrupts, as
2165 well as other cases where the interesting frames used to be
2166 obscured by interrupt handling frames.
2167 * enhancement: untracing a whole package using (UNTRACE "FOO") is
2168 now supported, and tracing a whole package using (TRACE "FOO") now
2169 traces SETF-functions as well.
2170 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
2171 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
2172 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
2173 * unreadably printed representation of hash-tables now includes
2175 * bug fix: partially fixed #188: type propagation from assignments
2176 is now more efficient.
2177 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
2178 'DOUBLE-FLOAT) are not flushable.
2179 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
2180 full address of the object, and none of the tag bits.
2181 * bug fix: readably printing hash-tables now respects other printer
2182 control variables. (reported by Cedric St-Jean)
2183 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
2184 keyword with MAKE-HASH-TABLE.
2185 * bug fix: export SB-POSIX:MKSTEMP.
2186 * bug fix: SORT was not interrupt safe.
2187 * bug fix: XREF accounts for the last node of each basic-block as
2189 * bug fix: MAKE-INSTANCE optimizations interacted badly with
2190 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
2191 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
2192 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
2193 create obsolete instances in the case of redefinition or
2194 obsoletion of a superclass. (thanks to Andy Hefner)
2195 * bug fix: Support for the Alpha architecture has been revived; it had
2196 suffered somewhat from lack of maintenance since sbcl-1.0.
2197 * improvements to the Windows port:
2198 ** The system detects the codepage to use at startup, instead of
2199 using the value from the saved core. (thanks to Kei Suzuki)
2201 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
2202 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
2203 (see documentation for details.)
2204 * revived support for OpenBSD (contributed by Josh Elsasser)
2205 * partially fixed bug #108: ROOM no longer suffers from occasional
2206 (AVER (SAP= CURRENT END)) failures.
2207 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
2208 bodies no longer cause a WARNING to be signalled. (reported by
2210 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
2211 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
2212 the bug in TRUNCATE.) (reported by Michael Weber)
2213 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
2214 no samples. (reported by Andy Hefner)
2215 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
2216 no longer appear as (NIL ...) frames in backtraces.
2217 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
2218 is now actually exported from SB-EXT as documented. (reported by
2220 * bug fix: sb-aclrepl now correctly understands how to inspect
2221 single-floats on 64-bit platforms where single-floats are not boxed.
2222 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
2223 yet been finalized. (reported by Levente Meszaros)
2224 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
2225 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
2226 SBCL-specific optimize qualities.
2228 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
2229 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
2230 an executable in the search path, and does so in the child
2231 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
2232 been removed; it can be found in the CVS history, for somebody who
2233 needs that search behavior (see the manual).
2234 * minor incompatible change: compiler policy re. weakening type
2235 checks has changed: now type checks are weakened only if SAFETY < 2
2237 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2238 unparsing of directory pathnames as files. Analogously,
2239 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2240 filename to parse into a directory pathname.
2241 * enhancement: implicit generic function creation now signals a
2242 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2243 users can bind handlers for and muffle around calls to LOAD.
2244 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2245 to be used (using the default stream external format), and allows
2246 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2247 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2248 strings and vectors whose element-type or simplicity is not fully
2249 known at compile-time.
2250 * optimization: STRING-TRIM and related functions no longer allocate
2251 a new string when no trimming needs to be performed. These functions
2252 are also faster than before when the input string has been declared
2254 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2255 * optimization: READ-LINE is significantly faster for files containing
2257 * optimization: non-open coded uses of character comparison operators
2258 (e.g. char=) no longer cons when called with more than one parameter
2259 on platforms supporting dynamic-extent allocation.
2260 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2261 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2262 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2264 * bug fix: some sequence functions elided bounds checking when
2266 * bug fix: too liberal weakening of union-type checks when SPEED >
2268 * bug fix: more bogus fixnum declarations in ROOM implementation
2271 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2272 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2273 :SYNCHRONIZED argument, which makes the hash-table safe for
2274 concurrent accesses (but not iteration.) See also:
2275 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2276 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2277 * optimization: CONCATENATE on strings is an order of magnitude faster
2278 in code compiled with (> SPEED SPACE).
2279 * optimization: SUBSEQ is ~50% faster on lists.
2280 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2281 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2282 END is smaller then START.
2283 * bug fix: SB-PROFILE will no longer report extra consing for nested
2284 calls to profiled functions.
2285 * bug fix: ROOM implementation had bogus fixnum declarations which
2286 could cause type-errors when calling ROOM on large images.
2287 * bug fix: if file compilation is aborted, the partial fasl is now
2288 deleted, and COMPILE-FILE returns NIL as the primary value.
2289 * bug fix: number of thread safety issues relating to SBCL's internal
2290 hash-table usage have been fixed.
2291 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2292 be returned from its body when the values were being returned
2293 using unknown-values return convection and the W-P-O was wrapped
2294 inside an UNWIND-PROTECT.
2295 * bug fix: sb-posix should now compile again under Windows, enabling
2296 slime to work again.
2298 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2299 * incompatible change: hash-table accessor functions are no longer
2300 automatically protected by locks. Concurrent accesses on the same hash-table
2301 from multiple threads can give inconsistent results or even corrupt the
2302 hash-table completely. Multi-threaded applications should do their own
2303 locking at the correct granularity. In the current implementation it is
2304 still safe to have multiple readers access the same table, but it's not
2305 guaranteed that this property will be maintained in future releases.
2306 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2307 and will signal an error at runtime.
2308 * enhancement: SB-THREAD package now exports a semaphore interface.
2309 * enhancement: CONS can now stack-allocate on x86 and
2310 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2312 * enhancement: nested lists can now be stack allocated on
2313 platforms providing stack allocation support.
2314 * enhancement: dynamic-extent support has been extended to support
2315 cases where there are multiple possible sources for the stack
2317 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2318 if the mutex is uncontested on Linux.
2319 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2320 as specified by the CLHS. (thanks to Tobias Rittweiler)
2321 * bug fix: NaN comparison now works on x86-64.
2322 * bug fix: CLOSE :ABORT T on a stream with pending output now
2324 * bug fix: instances of non-standard metaclasses using standard
2325 instance structure protocol sometimes missed the slot type checks
2327 * bug fix: known functions can be inlined in high-debug code.
2329 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2330 * minor incompatible change: the MSI installer on Windows no longer
2331 associates .lisp and .fasl files with the installed SBCL.
2332 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2333 on Windows. (thanks to Luis Oliviera)
2334 * new feature: SB-CLTL2 contrib module now implements
2335 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2336 * optimization: scavenging weak pointers is now more efficient,
2337 requiring O(1) instead of O(N) per weak pointer to identify
2338 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2339 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2340 method bodies using constant slot-names when the first argument is
2341 a specializer parameter for the method.
2342 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2343 names, when the class of the instance is a direct instance
2344 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2345 as slow as the constant slot-name case.)
2346 * optimization: member type construction is now O(N) instead
2348 * optimization: UNION and NUNION are now O(N+M) for large
2349 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2351 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2352 now more readable in environments like Slime which display it.
2353 (thanks to Tobias C. Rittweiler)
2354 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2355 was able to infer the correct argument type for the object on which
2356 the CAS operation was being performed.
2357 * bug fix: copy propagation interfered with parallel assignment
2358 semantics in local calls. (reported by Paul Khuong)
2359 * bug fix: the signed modular fixnum shift compiled to wrong code on
2360 x86 and x86-64. (spotted by a slight modification to some of
2363 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2364 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2365 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2366 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2368 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2369 and generic function now print the object identity for anonymous
2370 instances. (thanks to Attila Lendvai)
2371 * enhancement: as an extension to MOP, SBCL now supports SETF of
2372 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2373 (thanks to Attila Lendvai)
2374 * enhancement: sb-cover has an alternate annotation mode which puts
2375 the form annotations at the car of the form, instead of annotating
2376 it completely. The benefit of this mode is that it shows better
2377 which forms were instrumented by the compiler.
2378 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2379 by printer control variables. (reported by Dan Corkill)
2380 * bug fix: system leaked memory when delayed output was performed by
2381 the OS in smaller chunks then expected. (thanks to David Smith)
2382 * bug fix: system leaked memory when file streams were not closed
2384 * bug fix: large objects written to slow streams that were modified
2385 after the write could end up with the modified state written to
2386 the underlying file descriptor.
2387 * bug fix: multiple threads operating in parallel on the same stream
2388 could cause buffer-overflows.
2389 * bug fix: source location information is stored correctly
2390 (broken since 1.0.6). This bug would generally show up as the
2391 Slime debugger highlighting the wrong form when the sldb-show-source
2393 * bug fix: Branch forms are again annotated as branches in the sb-cover
2395 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2396 on x86-64. (reported by Gregory Vanuxem)
2397 * bug fix: EQUALP could return wrong results for structures with raw
2398 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2399 word). (reported by Vjacheslav Fyodorov)
2400 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2403 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2404 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2405 atomic compare-and-swap operations on threaded platforms.
2406 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2407 allows assigning a global minimum value to optimization qualities
2408 (overriding proclamations and declarations).
2409 * enhancement: closed over variables can be stack-allocated on x86
2411 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2413 * optimization: slot definition lookup is now O(1). This speeds up
2414 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2415 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2416 * optimization: ASSOC and MEMBER can now be open-coded for all
2417 combinations of keyword arguments when second argument is constant
2418 and SPEED >= SPACE. In other cases a specialized version is
2420 * bug fix: using obsoleted structure instances with TYPEP and
2421 generic functions now signals a sensible error.
2422 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2423 (reported by Kristoffer Kvello)
2424 * bug fix: backtrace construction is now more careful when making
2425 lisp-objects from pointers on the stack, to avoid creating bogus
2426 objects that can be seen by the GC.
2427 * bug fix: defaulting of values in contexts expecting more than 7
2428 variables now works on x86-64. (reported by Christopher Laux)
2429 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2431 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2432 as the property-list of a symbol.
2433 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2434 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2435 situations requested, are once again file-compileable. (reported
2438 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2439 * MOP improvement: support for user-defined subclasses of
2440 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2441 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2442 the expansion of DEFMETHOD, is responsible for generating a form
2443 which creates a list of specializers when evaluated. Additional
2444 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2445 debugging and introspective support.
2446 * minor incompatible change: the (unsupported) spinlock interface
2447 has changed: free spinlock now has the value NIL, and a held spinlock
2448 has the owning thread as its value.
2449 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2450 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2452 * enhancement: name of a socket-stream is now "a socket" instead of
2453 "a constant string".
2454 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2455 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2456 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2457 for generic functions. (Thanks to Tobias C. Rittweiler)
2458 * optimization: bignum printing speed has been improved by 20-40%
2459 (depending on the bignum size.)
2460 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2462 * bug fix: the cache used by the CLOS to store precomputed effective
2463 methods, slot offsets, and constant return values is now thread and
2465 * bug fix: generic function dispatch function updating is now thread
2466 and interrupt safe (in the sense that the known issues have been
2468 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2469 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2470 * bug fix: asdf systems with dependencies to the SB-POSIX or
2471 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2472 * bug fix: interrupt safety of applicable method computation has been
2475 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2476 * new contrib: sb-cover, an experimental code coverage tool, is included
2477 as a contrib module.
2478 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2479 significantly faster.
2480 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2481 produce more efficient code on x86-64 if the compiler can determine
2482 that (+ INDEX <constant>) does not require a bounds check and FOO
2483 has an element type at least 8 bits wide.
2484 * enhancement: a new, experimental synchronous timeout facility is
2485 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2486 * enhancement: when a symbol name conflict error arises, the
2487 conflicting symbols are always printed with a package prefix.
2488 (thanks to Kevin Reid)
2489 * enhancement: stepping is now once again supported on the SPARC and
2490 MIPS platforms. (It is also now more likely to work on CheneyGC
2492 * enhancement: sb-sprof can now also track and report accurate call
2494 * bug fixes: the treatment of non-standard subclasses of
2495 SB-MOP:SPECIALIZER is more correct.
2496 * incompatible change: PURIFY no longer copies the data from the
2497 dynamic space into the static and read-only spaces on platforms
2498 that use the generational garbage collector
2499 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2501 * bug fix: GC race condition occasionally resulting in crashes with
2502 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2504 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2506 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2507 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2508 * bug fix: an asynchronous interrupt could previously leave the
2509 system running with GC inhibited.
2510 * bug fix: a DECLARE form evaluated at top-level now causes an error
2511 rather than silently (or verbosely) returning NIL.
2512 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2513 result in a error being signalled due to source form lookup errors.
2514 (reported by Peter Graves)
2516 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2517 * incompatible change: removed writer methods for host-ent-name,
2518 host-ent-addresses -- changing the values did not update the DNS
2520 * minor incompatible change: changed experimental JOIN-THREAD interface
2521 * documentation: the manual now lists reader and writer methods
2522 in class slot documentation sections. (thanks to Richard M Kreuter)
2523 * documentation: unwinding from asyncronous events has been
2524 documented as unsafe.
2525 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2526 in multithreaded application code.
2527 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2528 platforms. (thanks to James Anderson for the optimization hint)
2529 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2531 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2532 variants no longer cons.
2533 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2534 their NOT- variants no longer cons.
2535 * optimization: EQUAL hash tables no longer use SXHASH for objects
2536 of all data types, but instead use an EQL hash for types for which
2537 EQUAL is the same as EQL.
2538 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2539 are significantly faster.
2540 * optimization: new STRING-OUTPUT-STREAM implementation is much
2541 faster for large outputs and conses 30% less on average.
2542 * enhancement: XREF information is now collected for references made
2543 to global variables using SYMBOL-VALUE and a constant argument.
2544 * enhancement: SIGINT now causes a specific condition
2545 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2546 * bug fix: FILE-POSITION used to signal an error in some cases where
2547 ANSI requires it to return NIL.
2548 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2549 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2550 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2552 * bug fix: bad type declaration in the CLOS implementation has
2553 been fixed. (reported by James Anderson)
2554 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2555 (thanks to Lutz Euler)
2556 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2557 required by the CLHS. (reported by Samium Gromoff)
2558 * bug fix: dead unbound variable references now signal an error.
2559 (reported by Marco Monteiro)
2560 * bug fix: / with an unused value was being deleted in safe code.
2561 (thanks to Marco Monteiro and Kevin Reid)
2562 * bug fix: number of characters that can be written onto a single
2563 line in a file is unlimited.
2564 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2565 been fixed by inhibiting interrupts for when GC is disabled.
2566 * bug fix: some interrupt safety issues with GETHASH, (SETF
2567 GETHASH), CLRHASH and REMHASH have been fixed.
2568 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2569 specifier no longer causes infinite recursion.
2570 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2571 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2572 * bug fix: an &environment argument with the correct variable information
2573 is passed to macros that are expanded during byte compilation.
2574 (reported by Samium Gromoff)
2575 * bug fix: a logic error was causing the hash function for bignums to
2576 have excessive amounts of collisions. (reported by Faré Rideau)
2577 * bug fix: modifying the contents of an array could change the return
2578 value of SXHASH on that array, which is only allowed for strings
2579 and bit vectors. (bug introduced in 0.9.16)
2580 * improvement: the x86-64/darwin port now passes all tests (except
2581 for the debugger tests) but should still be considered
2582 experimental until this is fixed.
2583 * improvement: a style-warning is signaled for CASE (etc) clauses with
2584 duplicate keys. (thanks to Kevin Reid)
2585 * improvement: macos/x86 and macos/x86-64 now use mach exception
2586 handlers for dealing with illegal instructions (for trapping and
2587 error handling) and memory protection violations (for GC).
2589 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2590 * new platform: experimental support for x86-64/darwin (MacOS).
2591 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2592 and getnameinfo sockets functions are used instead of gethostbyaddr
2593 and gethostbyname, on platforms where the newer functions are available.
2594 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2596 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2597 don't print the startup banner, but behave as if --noinform was passed
2598 as a command line argument. (thanks to Kevin Reid)
2599 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2600 * optimization: code using alien values with undeclared types is much faster.
2601 * optimization: the compiler is now able to open code SEARCH in more cases.
2602 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2603 * bug fix: using standardized COMMON-LISP special variables as loop
2604 variables no longer signals bogus package lock violations. (reported
2606 * bug fix: declaring local loop variables to be of a range-limited type
2607 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2608 (reported by Andras Simon)
2609 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2610 bugs remain on x86-64.)
2611 * bug fix: the #= and ## reader macros now interact reasonably with
2612 funcallable instances.
2613 * bug fix: type-checks for function arguments were compiled using the
2614 compiler policy settings of the wrong lexical environment (in 1.0.2
2616 * bug fix: SHADOW accepts characters as string designators, as required
2617 by the spec (thanks to Eric Marsden)
2618 * bug fix: fixed GC safety issues when foreign functions are called with
2619 non-base strings as arguments
2620 * bug fix: more consistent error output for fatal-compiler-warnings, like
2622 * bug fix: functions with proper names were showing up as NIL in
2623 backtraces (reported by Edi Weitz, regression in 1.0.2)
2625 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2626 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2627 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2628 produce more efficient code on the x86 if the compiler can determine
2629 that (+ INDEX <constant>) does not require a bounds check and FOO
2630 has an element type at least 8 bits wide.
2631 * bug fix: references to undefined variables are handled the same way
2632 in toplevel forms as in the normal compiler
2633 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2635 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2636 (thanks to Jon Buller)
2637 * improvement: faster compilation times for complex functions
2638 * improvement: added readlink support to SB-POSIX (thanks to Richard
2641 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2642 * improvement: experimental support for mach exception handling on
2643 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2645 * improvement: support for GBK external format.
2646 (thanks to Chun Tian (binghe))
2647 * improvement: the debugger now displays variables that have been closed
2648 over, in code compiled with (DEBUG 2) or higher
2649 * improvement: support for executable cores on NetBSD (thanks to
2651 * new feature: added a RESTART-FRAME debugger command
2652 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2653 be used to provide an implementation for FILE-POSITION on Gray streams
2654 (thanks to Eric Marsden)
2655 * new feature: add syslog, openlog and closelog support to SB-POSIX
2656 (thanks to Richard Kreuter)
2657 * optimization: the function call overhead in code compiled with
2658 a high DEBUG optimization setting is significantly
2659 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2660 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2661 (thanks to Tony Martinez)
2662 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2663 evaluated once (reported by Kevin Reid)
2664 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2665 works again (thanks to Kilian Sprotte)
2666 * bug fix: an error is signaled for tagbodies with duplicate tags
2667 (thanks to Stephen Wilson)
2668 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2669 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2670 stack frames from alien callbacks.
2671 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2672 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2673 65k pages (thanks to David Woodhouse)
2674 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2676 changes in sbcl-1.0.1 relative to sbcl-1.0:
2677 * new platform: FreeBSD/x86-64, including support for threading.
2678 * new feature: the compiler stores cross-referencing information
2679 about function calls (who-calls), macroexpansion (who-macroexpands)
2680 and special variables (who-binds, who-sets, who-references) for code
2681 compiled with (< SPACE 3). This information is available through the
2682 sb-introspect contrib.
2683 * new feature: users may subclass SEQUENCE, and have instances of
2684 these classes interoperate with standard Common Lisp functions if
2685 a number of methods are defined. (This feature is experimental
2686 and the interface subject to change based on feedback from SBCL
2687 users and the general community)
2688 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2689 x86/x86-64, rather than the previous fixed depth of 8
2690 * improvement: another pthread back-end of mutex "pthread-futex".
2691 * bug fix: non-ascii command-line arguments are processed correctly
2692 (thanks to Yaroslav Kavenchuk)
2693 * bug fix: non-required arguments were not passed correctly when a method
2694 defined using DEFMETHOD was called from a mop-generated method using
2695 CALL-NEXT-METHOD (reported by Pascal Costanza)
2696 * bug fix: recursion is now permitted in accessors through
2697 SLOT-UNBOUND. (reported by Pascal Costanza)
2698 * bug fix: an error was signaled at startup if the HOME environment
2699 variable was defined, but had an empty value (reported by Peter Van Eynde)
2700 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2701 signal a PROGRAM-ERROR, not a BUG.
2702 * bug fix: SB-POSIX:READDIR works when built with large file support.
2703 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2705 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2706 for better automatic indentation support. (thanks to Matt Pillsbury)
2707 * optimization: loading generic functions no longer takes O(n^2) time,
2708 proportional to the amount of methods in the generic function
2709 (reported by Todd Sabin and Jeremy Brown)
2710 * optimization: the FIND and POSITION family of sequence functions
2711 are significantly faster on arrays whose element types have been
2713 * improvements to the Windows port:
2714 ** Intermittent heap corruption problems have been fixed. (thanks
2715 to Alastair Bridgewater)
2716 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2718 ** Lisp is able to unwind foreign exception frames from alien
2719 callbacks. (thanks to Alastair Bridgewater)
2721 changes in sbcl-1.0 relative to sbcl-0.9.18:
2722 * improvement: experimental support for threading on FreeBSD/x86.
2723 (thanks to NIIMI Satoshi)
2724 * improvement: runtime option --dynamic-space-size can be used
2725 to set the size of the dynamic space reserved on startup.
2726 * improvement: floating point modes in effect are now saved in
2727 core, and restored on startup.
2728 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2729 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2730 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2731 threads are not running after *SAVE-HOOKS* have run.
2732 * improvement: writes to CLOS instance slots are type-checked in code
2733 compiled with (SAFETY 3)
2734 * improvement: floating-point exception handling on FreeBSD (thanks to
2736 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2737 (thanks to Zach Beane)
2738 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2740 * improvement: added support for the Shift-JIS external format.
2741 (contributed by NIIMI Satoshi)
2742 * improvement: callbacks are supported on Linux/PPC. (thanks to
2744 * bug fix: compiler bug triggered by a (non-standard) VALUES
2745 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2746 * bug fix: file compiler no longer confuses validated and already
2747 dumped structurres. (reported by Kaersten Poeck)
2748 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2749 fill-pointer signals a type-error as required. (thanks to
2751 * bug fix: disassemly of funcallable instances works.
2752 * bug fix: single stepping on PPC.
2753 * bug fix: fix thread-safety problems in the type system (generally
2754 manifesting as nonsensical errors like "STRING is a bad type specifier
2755 for sequences" or "The value 1 is not of type FIXNUM")
2756 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2757 (reported by Josip Gracin)
2758 * bug fix: an error is signaled for attempts to displace arrays with
2759 incompatible element types (thanks to Mario Mommer)
2760 * bug fix: more correct handling of wide characters in debug info
2761 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2762 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2763 and don't cause extra consing
2764 * optimization: MAP and MAP-INTO are significantly faster on vectors
2765 whose elements types have been declared.
2766 * Improvements to SB-SPROF:
2767 ** Support for allocation profiling
2768 ** Reduced profiling overhead, especially for long profiling runs
2769 * Improvements to the Windows port:
2770 ** floating point exceptions are now reported correctly.
2771 ** stack exhaustion detection works partially.
2772 ** more accurate GET-INTERNAL-REAL-TIME.
2773 ** better RUN-PROGRAM behaviour in case of errors in the child
2775 ** PROBE-FILE now simplifies pathnames correctly.
2776 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2777 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2778 1st 1970 (although time timezone data will be unreliable).
2779 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2781 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2782 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2783 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2785 * bug fix: two potential GC deadlocks affecting threaded builds.
2786 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2787 returns T (reported by Anton Kazennikov)
2788 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2789 with non-variable places
2790 * bug fix: remove a race condition in the setting of
2791 funcallable-instance functions, this should make threaded CLOS
2792 code more stable against memory faults.
2793 * bug fix: corruption of specials when unbinding is interrupted by an
2794 asynchronous unwind (reported by Hannu Koivisto)
2795 * improvement: the debugger will now also display local variables that
2796 are only used once, for code compiled with a DEBUG optimization quality
2799 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2800 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2801 * incompatible change: External-format support for FFI calls. The
2802 SB-ALIEN:C-STRING no longer implies an ASCII
2803 external-format. Instead the string is subject to external-format
2804 conversion. Additionally return values of type SB-ALIEN:C-STRING
2805 are by default of type (SIMPLE-ARRAY CHARACTER), not
2806 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2807 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2808 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2809 * incompatible change: SB-EXT package no longer contains the
2810 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2811 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2813 * incompatible change: the single-stepper is no longer available
2814 on Alpha, Mips and Sparc platforms.
2815 * minor incompatible change: the direct superclasses of
2816 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2817 not (STANDARD-OBJECT FUNCTION). This makes the
2818 class-precedence-lists of GENERIC-FUNCTION and
2819 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2821 * minor incompatible change: the default stream external format on
2822 non-unicode SBCL is no longer detected from the locale, but is always
2824 * new feature: Add a version of evaluator that uses an interpreter instead
2825 of the compiler. EVAL still uses the compiler by default, to switch it
2826 to use the interpreter, set the value of the variable
2827 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2828 * minor incompatible change: the single-stepper REPL has been merged
2829 with the normal debugger (see the "Stepping" heading of the debugger help
2830 for more details). The debugger command STEP will no longer switch
2831 to the single-stepper REPL.
2832 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2833 for a type now works.
2834 * bug fix: loading of default sysinit file works. (thanks to Leonid
2836 * bug fix: better detection of circularities in the file-compiler.
2837 (reported by Marco Monteiro)
2838 * bug fix: the CL pathname functions now work with files that have
2839 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2840 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2841 systems with Unix98 pty semantics.
2842 * bug fix: ASDF-INSTALL will now work with bsd tar.
2843 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2845 * bug fix: timers expiring in dead threads no longer cause a
2846 type-error (reported by Paul "Nonny Mouse").
2847 * bug fix: thanks to more lightweight single-stepper instrumentation,
2848 code compiled with (DEBUG 3) will compile and execute significantly faster,
2849 and will have more accurate type-inferencing than before
2850 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2851 whose bindings are modified
2852 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2853 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2854 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2855 CL:SOFTWARE-VERSION with proper version
2857 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2858 * feature: implemented the READER-METHOD-CLASS and
2859 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2860 as specified by AMOP.
2861 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2863 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2864 (thanks to Lutz Euler)
2865 * optimization: hashing of general arrays and vectors has been
2866 improved. (reported by Any Fingerhut)
2867 * enhancement: SB-INTROSPECT is now able to find definitions of
2868 profiled functions. (thanks to Troels Henriksen)
2869 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2870 as well, allowing compiler-macros for SETF-functions to expand.
2871 * enhancement: step-instrumentation no longer wraps known
2872 single-value functions with multiple-value context, allowing
2873 better type inference.
2874 * fixed bug #337: use of MAKE-METHOD in method combination now works
2875 even in the presence of user-defined method classes. (reported by
2876 Bruno Haible and Pascal Costanza)
2877 * fixed bug #339(c): if there are applicable methods not part of any
2878 long-form method-combination group, call INVALID-METHOD-ERROR.
2879 (reported by Bruno Haible)
2880 * fixed bug #361: the :FUNCTION initarg in the protocol for
2881 initialization of methods can now be used to override
2882 internally-produced optimized functions. (reported by Bruno
2884 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2885 system-provided lambda expression no longer cause warnings about
2886 unbound #:|pv-table| symbols.
2887 * bug fix: improved the handling of type declarations and the
2888 detection of violations for keyword arguments with non-constant
2890 * bug fix: potentially erronous calls to PATHNAME and
2891 MERGE-PATHNAMES were being flushed in some cases.
2892 (reported by Richard Kreuter)
2893 * bug fix: compiled calls to TYPEP were mishandling obsolete
2894 instances. (reported by James Bielman and Attila Lendvai)
2895 * bug fix: format strings with ~> without matching ~< no longer
2896 trigger an AVER, but signal an understandable error instead.
2897 (reported by Antonio Martinez)
2898 * bug fix: specifying an output-file without a pathname-type for
2899 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2900 of input-file instead of "fasl". (reported by Robert Dodier)
2901 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2902 (reported by James Y Knight).
2903 * bug fix: compiler-macros-function did not consider the environment
2904 argument for shadowing by local functions.
2905 * bug fix: compiler-macros expansion was inhibited by local INLINE
2907 * bug fix: inline expansions of known functions were subject to
2908 step-instrumentation in high debug policies, leading to problems
2909 with type-inference.
2910 * bug fix: compiler failed to differentiate between different CONS
2911 types in some cases.
2912 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2913 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2914 * bug fix: #368: incorrect use of expressed vs. upgraded array
2916 * bug fix: #306a: more precise unions of array types.
2917 * thread-safety improvements:
2918 ** CONDITION-WAIT could return early on Linux, if the thread was
2919 interrupted and subsequently continued with SIGCONT.
2920 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2922 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2923 * added support for the ucs-2 external format. (contributed by Ivan
2925 * minor incompatible change: pretty printing of objects of type
2926 (cons symbol) is, in the default pprint-dispatch-table, now
2927 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2929 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2930 called later in a class's lifetime, possibly as late as when the
2931 first instance of the class is created. Previously,
2932 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2933 class became finalizeable.
2934 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2935 for multibyte external-format streams. (thanks to "vbzoli")
2936 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2937 with :ALLOCATION :CLASS inherited from superclasses of the
2939 * fixed bug: anonymous classes can now be created using the :NAME
2940 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2941 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2942 * fixed bug: core-files saved with :EXECUTABLE T can again be
2943 executed when SBCL_HOME isn't set. (reported by James Knight)
2944 * fixed bug: toplevel LOCALLY forms with declarations could
2945 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2946 * fixed bug: printing from several different threads using different
2947 values of *print-case* could cause invalid output, due to
2948 some internal special variables of the printer not being bound
2949 thread-locally (reported by Max Mikhanosha)
2950 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2951 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2952 (reported by Pascal Costanza)
2953 * fixed bug: FINALIZE-INHERITANCE is called from
2954 REINITIALIZE-INSTANCE on classes when the class has previously
2955 been finalized, as required by AMOP.
2956 * minor code generation optimizations:
2957 ** better register allocation in CLOS dispatching functions
2958 ** overflow detection when coercing signed bytes to fixnums on x86-64
2959 ** is now implemented with one IMUL instruction instead of three shifts
2960 ** more efficient bit-vector access on x86 and x86-64
2961 ** more efficient access to raw structure slots on x86 and x86-64
2962 * fixed some bugs revealed by Paul Dietz' test suite:
2963 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2964 return its argument.
2966 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2967 * feature: thread support on Solaris/x86, and experimental thread support
2969 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2971 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2972 default method for SLOT-UNBOUND.
2973 * minor incompatible change: prevent the user from specializing the
2974 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2975 somewhat counter to the intent of the protocol, I (CSR) think, and
2976 additionally it just doesn't work in SBCL as currently
2977 implemented, thanks to optimizations (that are always valid for
2978 the other three SLOT-VALUEish functions, but not for the setter).
2979 * minor incompatible change: the :SB-LDB feature is now enabled by
2980 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2981 the low-level debugger.
2982 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2983 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2984 down to an SB-SYS:FD-STREAM, allowing direct communication in
2985 more cases. Temporary files and pipes are still used as a fallback
2987 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2988 on the non-reentrant C functions localtime(3) and gmtime(3).
2989 * bug fix: global optimization policy was not visible in LOCALLY and
2991 * bug fix: class objects can be used as specializers in methods.
2992 (reported by Pascal Costanza)
2993 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2994 with a type error. (reported by blitz_ on #lisp)
2995 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2996 failed with a type error. (reported by Pascal Bourguignon)
2997 * bug fix: merging pathnames against defaults with :DIRECTORY
2998 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2999 (reported by James Y Knight)
3000 * bug fix: saving large (>2GB) cores on x86-64 now works
3001 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
3002 constant index and a (simple-array (signed-byte 32)) array
3003 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
3004 error (patch by Robert J. Macomber)
3005 * feature: TIME now displays the amount of run-time spent in GC
3006 * bug fix: The debugger now does a better job of respecting
3007 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
3008 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
3009 workaround for bug 403.)
3010 * bug fix: floating point exception handling now works on FreeBSD
3011 (thanks to NIIMI Satoshi)
3012 * fixed some bugs revealed by Paul Dietz' test suite:
3013 ** MISC.641: LET-conversion were not supposed to work in late
3015 * improvements to the Win32/x86 port:
3016 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
3017 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
3019 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3020 * new feature: source path information is generated for macro-expansion
3021 errors for use in IDE's like Slime (thanks to Helmut Eller)
3022 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
3023 * bug fix: compiler does not loop forever on an invalid type in
3025 * improvement: compilation of most CLOS applications is significantly
3027 * optimization: added a limited bytecode compiler for simple toplevel
3028 forms, speeding up compilation and FASL loading
3029 * bug fix: the statistical profiler now properly distinguishes anonymous
3032 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
3033 * minor incompatible change: in sbcl-0.9.11 (but not earlier
3034 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
3035 into subclasses of the finalized class. Now user calls to
3036 FINALIZE-INHERITANCE finalize just the one class, and calls by the
3037 system return before any subclasses are finalized.
3038 * minor incompatible change: The reader no longer ignores errors
3039 regarding non-existent packages in #+ and #- feature tests.
3040 * new feature: command line options --no-sysinit, --no-userinit to
3041 inhibit loading the corresponding init files
3042 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
3043 for sending data through UDP sockets (thanks to François-René Rideau)
3044 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
3045 error is signalled instead (thanks to François-René Rideau)
3046 * minor incompatible change: Error signalling behaviour of lexical
3047 operations violating package locks has changed slightly. Refer to
3048 documentation on package locks for details.
3049 * enhancement: EVAL can process IF-expressions without resorting to the
3051 * bug fix: Some operations involving SIN, COS, or TAN weren't being
3052 constant-folded properly due to missing out-of-line functions.
3053 (reported by Mika Pihlajamäki)
3054 * bug fix: LISTEN sometimes returned T even in cases where no data was
3055 immediately available from the stream
3056 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
3057 were reversed. (reported by Levente Mészáros)
3058 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
3059 when given a vector displaced to an adjustable array. (reported
3061 * bug fix: derivation of float boundaries from numbers outside the
3062 appropriate float range (reported by John Wiseman)
3063 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
3065 * bug fix: precomputing cache entries for generic functions with
3066 some subclasses of specializers as yet invalid does not attempt to
3067 fill a cache line with a negative offset. (reported by Levente
3069 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
3070 allow condition class objects as arguments to DOCUMENTATION and
3071 (SETF DOCUMENTATION); only find and set documentation for
3072 structure names for the STRUCTURE doc-type. (suggested by Gary
3074 * improvements to the Win32/x86 port:
3075 ** (user-homedir-pathname) and default initialization file
3076 locations now know about the user's "Documents and Settings"
3077 directory (thanks to Yaroslav Kavenchuk)
3078 ** run-program is implemented (thanks to Mike Thomas)
3079 ** sockets support (thanks to Timothy Ritchey)
3080 ** better backtrace support (thanks to Alastair Bridgewater)
3081 ** sb-grovel supported
3082 ** asdf-install and sb-posix work somewhat
3083 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
3084 * improvements to the Solaris/x86 port:
3085 ** works on Solaris 11/Solaris Express
3086 ** floating-point exception handling support
3087 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
3088 * fixed some bugs revealed by Paul Dietz' test suite:
3089 ** REMOVE-METHOD returns its generic function argument even when
3090 the method is not one of the generic functions' methods.
3091 ** objects declared as MEMBER types can be admissible arguments to
3092 structure accessors.
3093 ** printing characters should simply be printed by the FORMAT ~:C
3095 ** compiler failure when compiling functions with hairy constant
3096 defaults for optional parameters.
3097 ** compiler produces wrong code when MAYBE-INLINE-expanding a
3098 function, which is already optimized.
3100 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
3101 * new platform: experimental support for SBCL x86/Darwin, including
3102 MacOS X 10.4.5 on Intel.
3103 * new feature: Unicode character names are now known to the system
3104 (through CHAR-NAME and NAME-CHAR).
3105 * new feature: the filesystem location of SBCL's core file is
3106 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
3107 * minor incompatible change: the contrib modules SB-POSIX and
3108 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
3109 this change is to make it easier to distribute
3110 location-independent binaries.
3111 * bug fix: as implied by AMOP, standardized classes no longer have
3112 slots named by external symbols of public packages. (reported by
3114 * optimization: calling functions via constant symbols -- as in
3115 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
3116 via the function object as in (FUNCALL #'FOO).
3117 * optimization: on x86 and x86-64, the calling convention for the
3118 case of dealing with an unknown number of values has been altered
3119 to be friendlier to the prediction heuristics implemented,
3120 particularly with reference to CALL and RET pairing. (thanks to
3121 Alastair Bridgewater)
3122 * optimization: on x86, the code for access to thread-local symbol
3123 values and binding/unbinding of thread-local symbols is smaller.
3124 (thanks to Alastair Bridgewater)
3125 * enhancement: CONSTANTP is now able to determine constantness of
3126 more complex forms, including calls to constant-foldable standardized
3127 functions and some special forms beyond QUOTE.
3128 * fixed bug: occasional GC crashes on Solaris/x86
3129 * optimization: x86-64 supports stack allocation of results of simple
3130 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
3131 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
3132 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
3133 (thanks to James Knight)
3134 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
3135 by the standard (thanks to Stephen Compall)
3137 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3138 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
3139 be used for bundling the runtime and the core file into one
3140 executable binary. This feature is not currently supported on all SBCL
3141 platforms. (thanks to James Bielman and NIIMI Satoshi)
3142 * new feature: a generational or ephemeral garbage collector is now
3143 the default on the PowerPC platform (both Linux and Darwin). The
3144 old Cheney (stop and copy) collector is a build-time option.
3145 (thanks to Cyrus Harmon, after Raymond Toy)
3146 * minor incompatible change: the method by which SBCL finds its
3147 contributed modules has changed; it no longer relies on symbolic
3148 links from an $SBCL_HOME/systems directory, but searches directly
3149 in the subdirectories of $SBCL_HOME.
3150 * enhancement: the dynamic heap size on the Linux/PPC platform is
3151 markedly larger, even using the older Cheney garbage collector.
3152 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
3153 certain complicated string types. (reported by Gary King)
3154 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
3155 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
3156 * fixed bug: DOCUMENTATION on structures no longer signals an
3157 error if no structure type of the right name exists. (reported by
3159 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
3160 applicable non-standard primary or :AROUND method on
3161 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
3162 no longer cause unbound variable errors. (reported by Kevin Reid)
3163 * fixed bug: metacircle resolution in cases where methods have slots
3164 added before the slots from STANDARD-METHOD. (reported by Jean
3166 * fixed bug: the Power PC assembly code for calling into lisp
3167 sometimes computed its return address wrongly (depending on the
3168 15th bit of the address, fixed at link time). This used to
3169 manifest itself in a segmentation violation while building PCL.
3170 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
3171 many others over the years)
3172 * fixed bug: ROOM no longer reports silly numbers for stack usage if
3173 the stack pointer (treated as a signed integer) is negative.
3174 (thanks to Peter van Eynde)
3176 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3177 * new platform: experimental support for the Windows operating
3178 system has been added. (thanks to Alastair Bridgewater)
3179 * fixed several bugs in and robustified the PPC FFI (including
3180 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
3181 * bug fix: allow non-simple string symbol names (reported by Paul
3183 * bug fix: interrupt handling on NetBSD (thanks to Richard M
3185 * bug fix: saving a core corrupted callbacks on x86/x86-64
3186 * bug fix: closed a loophole in metacircularity detection and
3187 grounding in the PCL implementation of CLOS.
3188 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
3189 (reported by tomppa on #lisp)
3190 * bug fix: clear the direction flag on Lisp -> C transitions, as
3191 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
3192 (reported by Andrej Grozin and Hendrik Maryns)
3193 * optimization: major improvements to GC efficiency on GENCGC platforms
3194 * optimization: faster implementation of EQUAL
3195 * optimization: emit more efficient opcodes for some common
3196 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
3197 * optimization: several other minor code-generation improvements on x86-64
3198 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
3200 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3201 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3202 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
3203 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
3204 by ANSI as a generic function, and for consistency (SETF
3205 GENERIC-FUNCTION-NAME) is treated likewise.
3206 * fixed bug #233.b: make constraint propagation notice when a variable
3207 value is changed after it is referenced but before it is used
3208 * fixed bug #296: no more arbitrary behaviour from filenames with
3209 odd characters as --load arguments. (reported by Adam Warner)
3210 * fixed bug #390: :CHARACTER-SET pathname components now work as
3211 expected. (reported by Tim Daly Jr)
3212 * fixed bug #391: complicated :TYPE intersections in slot
3213 definitions no longer cause an error in PCL internals.
3214 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
3215 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
3216 returning the number of octets which would be written to the
3217 file-stream. (thanks to Robert J. Macomber)
3218 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
3219 arguments to the internal stream functions. (thanks to David
3221 * bug fix: stack exhaustion is now handled on the x86/SunOS
3222 platform. (thanks to Daisuke Homma)
3223 * bug fix: more accurate ROOM results on GENCGC platforms
3224 * optimization: improved type inference for arithmetic-for
3225 index variables in LOOP
3226 * optimization: faster floating-point SQRT on x86-64
3227 * fixed some bugs revealed by Paul Dietz' test suite:
3228 ** DOCUMENTATION returns NIL instead of "" for method combinations
3229 that don't have a docstring
3231 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
3232 * minor incompatible change: (SETF CLASS-NAME) and (SETF
3233 GENERIC-FUNCTION-NAME) are no longer generic functions, and
3234 therefore are not customizeable by user code (as seems to be at
3235 least permitted and maybe required by AMOP). As a consolation,
3236 however, the SBCL implementation of these functions now calls
3237 REINITIALIZE-INSTANCE as specified by AMOP.
3238 * bug fix: slot-definition documentation is propagated as per ANSI
3239 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3240 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3241 argument, as do eslotd initialization methods. (from Pascal
3242 Costanza's "Closer" project)
3243 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3244 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3246 * bug fix: it is now possible to have more than one subclass of
3247 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3248 (reported by Bruno Haible, Pascal Costanza and others)
3249 * bug fix: the dependent update protocol now works for generic
3250 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3251 and Pascal Costanza)
3252 * bug fix: condition-class instances corresponding to
3253 DEFINE-CONDITION forms are now created eagerly. (reported by
3254 Kalle Olavi Niemitalo on comp.lang.lisp)
3255 * bug fix: floating point printing is more accurate in some
3256 circumstances. (thanks to Simon Alexander)
3257 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3258 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3259 * bug fix: callbacks on OS X now preserve stack-alignment.
3260 (thanks to Cyrus Harmon)
3261 * enhancement: the x86-64 disassembler is much better at
3262 disassembling SSE instructions. (thanks to Lutz Euler)
3263 * enhancement: CHECK-TYPE on a variable now allows type-inference
3264 (thanks to Vincent Arkesteijn)
3265 * optimization: improved performance of EUC-JP external format.
3266 (thanks to NIIMI Satoshi)
3267 * optimization: performance improvements to IO on file streams of
3268 :ELEMENT-TYPE CHARACTER
3269 * optimization: much faster memory allocation on x86-64
3270 * optimization: faster garbage collections (latency and throughput)
3272 * optimization: faster bignum subtraction and division on x86 and x86-64
3273 (thanks to Lutz Euler)
3274 * optimization: more accurate type-inference for loops that use a
3275 floating point index variable or a negative step.
3277 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3278 * bug fix: add a workaround to SBCL looping infinitely at startup on
3279 Linux kernels with apparently buggy implementations of personality().
3280 (thanks to Svein Ove Aas)
3281 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3282 (thanks to David Lichteblau)
3283 * bug fix: local bindings shadow global symbol macros for
3284 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3285 * optimization: non-open coded uses of numeric comparison operators
3286 (e.g. >) no longer cons when called with more than one parameter
3287 on platforms supporting dynamic-extent allocation.
3288 * enhancement: saving cores with foreign code loaded is now supported
3289 on MIPS/Linux in addition to the previously supported platforms.
3290 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3291 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3292 * bug fix: division by zero in sb-sprof when no samples were collected
3293 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3294 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3295 (thanks to Alexander Kjeldaas)
3296 * new feature: ignoring the return values of destructive functions
3297 like NREVERSE signals a compile-time style-warning.
3298 (thanks to Kevin Reid)
3299 * new feature: the alignment of alien structure fields can be
3300 explicitly specified. (thanks to Cyrus Harmon)
3301 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3302 and dump core on SIGQUIT
3304 ** incompatible change: threads do not inherit values of specials
3305 from their parents (see manual)
3306 ** bug fix: threads stacks belonging to dead threads are freed by the
3307 next exiting thread, no need to gc to collect thread stacks anymore
3308 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3309 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3310 ** bug fix: dynamic variable and thread start related gc lossage
3311 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3313 * fixed some bugs revealed by Paul Dietz' test suite:
3314 ** SUBTYPEP is slightly more accurate on heinously complicated
3315 CONS types where some of the members have uncertain (in the
3316 NIL, NIL sense) type relationships to each other.
3318 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3319 no longer purified unless :PURIFY T is explicitly specified.
3320 ** Non-purified cores are significantly smaller than before
3322 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3323 * new feature: timers based on Zach Beane's excellent timer package
3324 * added support for the following external formats: koi8-u,
3325 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3326 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3327 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3328 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3329 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3330 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3331 * incompatible change: a threaded SBCL will no longer revert to
3332 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3333 * bug fix: interrupts are disabled until startup is complete; no
3334 more sigsegvs when receiving a signal to soon
3335 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3337 * bug fix: add a workaround for the memory randomization features in
3338 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3339 workaround will only be in effect on systems with the proc filesystem
3341 * bug fix: printing objects of type HASH-TABLE signals a
3342 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3344 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3345 have been running for over 50 days. (reported by Gilbert Baumann)
3346 * bug fix: the logic for getting names of functions gets less
3347 confused when confronded with alternate-metaclass
3348 funcallable-instances. (reported by Cyrus Harmon)
3349 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3350 consistent, even on internal alternate-metaclass objects.
3351 * bug fix: flush closure information collected by physical
3352 environment analysis prepass before the main pass. (bug reported
3354 * bug fix: compiler pack phase does not modify a hashtable, which is
3355 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3356 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3357 may be expanded. (reported by Alexander <malishev> on c.l.l)
3358 * bug fix: no more style-warnings when compiling code using LAST
3359 under high-SPEED low-SPACE settings. (reported by David Wallin
3361 * fixed some incompatibilities between SBCL's MOP and the MOP
3363 ** the METAOBJECT class is now implemented;
3364 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3365 STANDARD-OBJECT, as required;
3366 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3367 now compatible (as required by VALIDATE-SUPERCLASS); there
3368 remains a consistency requirement over the presence or absence
3369 of the FUNCTION class in the superclass list of finalized
3370 classes; see the manual for more details;
3371 ** the :AROUND method for COMPUTE-SLOTS on
3372 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3373 requested slot ordering.
3375 ** bug fix: parent thread now can be gc'ed even with a live
3377 ** bug fix: binding a special with PROGV to no value is not
3378 the same as that symbol not having been bound (thanks to
3380 ** bug fix: binding specials is thread safe (thanks to
3382 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3383 and SB-SPROF do not die with 'no handler for signal XX in
3384 interrupt_handle_now(..)' anymore
3385 ** bug fix: WITH-TIMEOUT works with multiple running threads
3386 * fixed some bugs revealed by Paul Dietz' test suite:
3387 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3388 the :method-class keyword argument.
3390 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3391 * new port: the Solaris operating system on x86 processors is now
3392 mostly supported, though some rough edges in the environment
3393 remain. (thanks to Daisuke Homma)
3394 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3395 space for its heap. (thanks to Thiemo Seufer)
3396 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3397 closures. (thanks to Thiemo Seufer)
3398 * minor incompatible change: eof selects abort in the debugger.
3399 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3400 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3402 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3403 deprecated, and will go away in a future revision of SBCL.
3404 * minor incompatible change: GC-ON and GC-OFF are no longer
3405 implemented with a counter, it does not matter how many times gc
3406 is switched on or off
3407 * bug fix: discriminating functions for generic function classes
3408 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3409 make invalid assumptions about method precedence order. (reported
3411 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3412 platforms. (thanks to Thiemo Seufer)
3413 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3414 * bug fix: correct pathname printing with printer escaping is on.
3415 (thanks to Kevin Reid)
3416 * bug fix: complex VOP definitions in "user-space" no longer trigger
3417 package locks. (reported by Zach Beane)
3418 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3419 for funcallable-instance functions, and is no different from
3421 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3422 characters in the current readtable. (reported by Nicholas Neuss)
3423 * bug fix: SUBTYPEP on various CONS types returns more a more
3424 accurate acknowledgment of its certainty.
3425 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3426 lists in some cases. This partially fixes bug 384.
3427 * flush all standard streams before prompting in the REPL and the
3429 * bug fix: signal handling and triggering gc do not conflict
3430 directly anymore, in particular a high frequency sb-sprof does
3431 not prevent gc from running
3432 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3433 approximation for timezone and DST information between the
3434 universal time epoch and the smallest negative 32-bit time_t.
3435 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3436 year 1899 so long as the encoded time is non-negative.
3437 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3438 the correct answer for non-constant rotate amounts when performing
3439 an inline 32-bit rotation.
3441 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3442 there is only one thread in the session
3443 ** bug fix: memory leak for streams created in one thread and
3444 written to in another
3445 ** bug fix: lockup when compiled with gcc4
3446 ** bug fix: race that allows the gc to be triggered when gc is
3448 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3449 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3451 ** bug fix: finished threads are gc'ed properly
3452 * fixed some bugs revealed by Paul Dietz' test suite:
3453 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3454 has arguments with a different set of applicable methods from
3455 the orignal arguments.
3456 ** The type error thrown by MAP now has a correct expected-type
3458 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3459 name a compiled function.
3460 ** Three MISC tests where a large bignum was improperly coerced to
3461 a float that couldn't represent that bignum during type
3462 derivation were fixed.
3463 ** SUBTYPEP can now handle types involving the negation of a
3464 list-form FUNCTION type.
3465 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3466 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3467 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3469 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3470 * New feature: Experimental support for bivalent streams: streams
3471 opened with :element-type :default now allow character and binary
3472 (unsigned-byte 8) I/O
3473 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3474 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3476 * bug fix: no more highly sporadic "couldn't check whether ~S is
3477 readable" when reading a stream and an interrupt hits in the middle
3478 of a select system call
3479 * compiler better recognizes complex arrays (reported by Eduardo
3481 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3482 for variables on SBCL built with linkage-tables. (reported by Luis
3484 * various error reporting improvements.
3485 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3486 (Thanks to Thiemo Seufer)
3487 * bug fix: nested reader invokations work correctly
3488 * bug fix: it is possible to have simultaneous references to foreign
3489 code and foreign data with the same name.
3491 ** added x86-64 support
3492 ** incompatible change: the threading api now works with thread
3493 objects instead of thread ids
3494 ** bug fix: threads are protected from signals and interruption when
3495 starting up or going down
3496 ** bug fix: a race where an exiting thread could lose its stack to gc
3497 ** bug fix: don't halt on infinite error in threads if possible
3498 ** fixed numerous gc deadlocks introduced in the pthread merge
3499 ** bug fix: fixed thread safety issues in read and print
3500 ** bug fix: debugger doesn't hang on session lock if interrupted at
3501 an inappropriate moment
3502 ** bug fix: run-program is now thread safe(r)
3503 ** bug fix: inner with-recursive-lock no longer releases the mutex
3504 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3505 * fixed some bugs revealed by Paul Dietz' test suite:
3506 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3507 EXPECTED-TYPE slots filled.
3508 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3510 ** MAKE-CONDITION accepts classes as type-designators.
3511 ** COMPILE may never return NIL.
3512 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3513 range before calling Unix time functions
3515 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3516 * numerous signal handling fixes to increase stability
3517 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3518 * minor incompatible change: we now correctly canonize default
3519 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3520 as per the MOP, rather than the historical (INITARG INITFUNCTION
3521 INITFORM). (reported by Bruno Haible)
3522 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3523 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3524 for more information.
3525 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3526 pathname is a directory pathname.
3527 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3528 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3530 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3531 :METACLASS argument in addition to a class name. (reported by
3532 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3533 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3534 (reported by Bruno Haible; patch from Gerd Moellmann)
3535 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3537 * bug fix: more cleanups to the floating point exception handling on
3538 x86-64 (thanks to James Knight)
3539 * bug fix: the compiler does not try to constant fold calls of
3540 COERCE and BIT-* functions when they return freshly constructed
3541 objects. (reported by Nikodemus Siivola and Paul Dietz)
3542 * optimization: improved the MIPS versions of generic (in the
3543 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3544 * optimization: direct conversion of (unsigned-byte 32) to floats on
3545 the PowerPC platform.
3546 * optimization: structure instances with raw slots now use less
3547 memory, and probably show better memory locality. (thanks to
3549 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3550 are treated as requests for stack allocation on the x86-64,
3551 Alpha-32, PPC and SPARC platforms.
3552 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3553 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3554 (thanks to Tony Martinez)
3556 ** gcing a dead thread can no longer lead to lockups
3557 ** threads block signals until they are set up properly
3558 ** errno is no longer shared by threads
3559 ** interrupt-thread restores the eflags register on x86
3560 ** fixed some lockups due to gc/thread interaction
3561 * fixed some bugs revealed by Paul Dietz' test suite:
3562 ** invalid dotted lists no longer raise a read error when
3563 *READ-SUPPRESS* is T
3564 ** signal an error if a symbol that names a declaration is used
3565 as the name of a type, or vice versa
3566 ** allow using the (declare (typespec var*)) abbreviation for
3567 (declare (type typespec var*)) with all type specifiers
3568 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3569 ** always return NIL from PPRINT-POP when OBJECT is NIL
3570 ** don't signal errors when pretty-printing malformed LABELS,
3571 FLET or MACROLET forms
3572 ** declarations in a DOLIST body are also in scope for the
3574 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3576 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3579 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3580 * fixed cross-compiler leakages that prevented building a 32-bit
3581 target with a 64-bit host compiler.
3582 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3583 opened with :IF-EXISTS :OVERWRITE.
3584 * fixed bug 281: error for an invalid qualifier in a short-form method
3585 combination method is not signalled until the faulty method is called.
3586 * bug fix: iteration variable type inferrer failed to deal with open
3587 intervals. (reported by Alan Shields)
3588 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3589 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3590 or more runtime options were provided to the sbcl binary.
3591 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3592 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3593 * optimization: there's now a fast-path for fixnum arguments in the
3594 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3595 * optimization: the code generated on x86-64 is more compact thanks
3596 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3597 * bug fix: floating-point exception handling now partly works on
3598 x86-64. (Thanks to James Knight)
3599 * improvement to the MIPS backend from Thiemo Seufer: C-style
3600 64-bit long long arguments and return values to alien functions
3602 * fixed some bugs revealed by Paul Dietz' test suite:
3603 ** the type-error signalled from WARN has a filled-in DATUM slot.
3604 ** the type-error required when a stream is not associated with
3605 a file has the stream as its datum.
3606 ** type-errors on single-floats on x86-64 no longer have
3607 :INVALID-OBJECT as the datum
3608 ** the type-errors signalled for invalid function names now have
3609 a correct expected type
3610 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3611 for structures defined with a :TYPE. Documentation strings for
3612 typed structures are no longer immediately discarded
3613 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3614 broadcast streams and synonym streams. FILE-LENGTH now also works
3615 on broadcast streams.
3617 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3618 * incompatible change: the --noprogrammer option, deprecated since
3619 version 0.7.5, has been removed. Please use the equivalent
3620 --disable-debugger option instead.
3621 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3623 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3624 inoperational for a while now) has been completely removed.
3625 * null lexical environments are now printed as #<NULL-LEXENV>,
3626 significantly reducing the amount of clutter in typical backtraces.
3627 * documentation on weak pointers, finalization, and after GC hooks
3628 has been added to the manual.
3629 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3630 as other specialized array types, is much faster. SUBSEQ and
3631 COPY-SEQ on such arrays have also been sped up.
3632 * optimization: EQL is now more efficient when at least other argument
3633 is known to be of type (OR FIXNUM (NOT NUMBER)).
3634 * fixed bug: the runtime is now less vulnerable to changes in the
3635 size of the SBCL object on OS X, and virtual memory is reserved for
3636 all spaces that need to be at a fixed address.
3637 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3638 * fixed bug: finalizers and after GC hooks that cause consing are now
3640 * fixed bug: compiler error messages and summaries are now printed to
3641 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3642 * fixed inference of the upper bound of an iteration variable.
3643 (reported by Rajat Datta).
3644 * fixed bug 211e: calling local functions with duplicated constant
3645 keyword argument no longer causes a bogus style warning about an
3647 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3648 ftype declaration to be disregarded. (reported by Dave Roberts)
3649 * fixed bug 373: caused by erronous compilation of references to alien
3650 variables in the runtime on ppc/darwin.
3651 * fixed bug 376: CONJUGATE type deriver.
3652 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3653 (reported by Baughn on #lisp)
3654 * a cross-compiler bug on non-x86 platforms has been identified and
3655 fixed. (thanks to Bruno Haible)
3656 * improvements to the MIPS runtime code for increased stability.
3657 (thanks to Thiemo Seufer)
3658 * increased the maximimum compact environment size to allow
3659 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3660 * partial workaround for bug 135: don't name the function we're
3661 calling for hairy cases of EVAL, so as not to accumulate one environment
3662 entry per call to EVAL. (reported by Kevin Reid)
3663 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3664 * optimization: type testing for non-vector arrays should be faster.
3665 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3667 * bug fix: setting 31st element of a bit vector to zero did not work
3669 * bug fix: redefining a class definition which failed due to a
3670 previous accessor / function clash now works (but see BUGS entry
3671 #380 for more problems in this area). (thanks to Zach Beane)
3672 * the long form of DEFINE-METHOD-COMBINATION disables method group
3673 checking when given a single method group with pattern *. (thanks
3675 * on x86 compiler supports stack allocation of results of simple
3676 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3677 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3678 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3679 * fixed some bugs related to Unicode integration:
3680 ** the restarts for recovering from input and output encoding
3681 errors only appear when there is in fact such an error to
3683 * fixed some bugs revealed by Paul Dietz' test suite:
3684 ** MISC.549 and similar: late transformation of unsafe type
3685 assertions into derived types caused unexpected code
3687 ** SCALE-FLOAT type deriver is less wrong.
3688 ** type derivers for EXP, LOG and similar functions compute result
3689 types for complex arguments better.
3690 ** (MISC.563) CONJUGATE type deriver works for very restricted
3692 ** out-of-line type testers for character strings are available.
3693 ** EQUAL compiler transform understands specialness of objects
3695 ** accessing double-floats stored on the stack now works on x86-64.
3696 ** debugger internals could sometimes create invalid lispobjs,
3697 resulting in GC crashes.
3698 ** MISC.548: type check weakening can convert required type into
3700 ** initialization forms for bindings are not in scope of free special
3703 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3704 * incompatible change: thread support for non-NPTL systems has
3705 been removed - locking is buggy and unreliable. A threaded
3706 SBCL build will now warn at startup and refuse to create
3707 new threads, unless futex support is detected in the kernel
3708 * incompatible change: the top level REPL now has only an ABORT
3709 restart associated with it, not TOPLEVEL and ABORT as it used to.
3710 TOP and TOPLEVEL are now available as debugger commands for
3711 returning to the top level.
3712 * incompatible change: forms evaluated in the REPL now use the
3713 global optimization policy.
3714 * incompatible change: user- and system-initialization files are
3715 no longer processed with LOAD, but by READ and EVAL; hence the
3716 global optimization policy, startup package, readtable, etc,
3718 * The .fasl file format number has been incremented because of
3719 various incompatible changes.
3720 * internal entry point details and argument counts no longer appear
3721 in backtraces unless explicitly requested by setting
3722 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3723 * built-in and standard functions no longer have names like "top
3724 level local call to FOO".
3725 * fixed bug 32: functions defined in non-null lexical environments
3726 now have more legible printed representation
3727 * fixed bug 33: functions defined in non-null lexical environemnts
3728 are now more amenable to inspection by INSPECT.
3729 * workaround for bug 354: XEPs no longer appear in backtraces unless
3730 explicitly requested.
3731 * fixed bug: receiving the signal which results from attempting to
3732 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3733 SIGBUS on other *BSDs) on architectures where the C stack is also
3734 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3735 to debugger confusion or wild instability. (reported by Cheuksan
3737 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3738 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3739 (reported by Lutz Euler)
3740 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3741 compiled code. (reported by Paul Dietz)
3742 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3743 specialized parameter to a method to something that is not TYPEP
3744 the specializer is now possible.
3745 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3746 face of package deletion.
3747 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3748 pathname. (reported by David Tolpin on c.l.l)
3749 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3750 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3751 STRING-STREAM and FILE-STREAM, respectively.
3752 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3753 than previously; in addition, its test suite is now run on build.
3754 (thanks to Luke Gorrie)
3755 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3756 * optimization: added a immediate representation for single-floats
3758 * fixed some bugs revealed by Paul Dietz' test suite:
3759 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3760 ** attempting to create a package with a colliding nickname causes
3761 correctable errors to be signalled.
3762 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3763 ** several x86-64 backend bugs related to sign-extension of immediate
3766 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3767 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3768 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3770 * fixed loading of multiply forward-referenced layouts.
3771 (thanks to Cheuksan Wang)
3772 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3773 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3774 (see COMPILE-FILE documentation for details of :PRINT option)
3775 * fixed bugs 19 and 317: fixed-format floating point printing is
3776 more accurate. This also fixes a bug reported by Adam Warner
3777 related to the ~@F format directive.
3778 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3780 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3781 dispatch table if the from-char is a dispatch macro character.
3782 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3783 by the wordsize no longer ignore the last word. (reported by Lutz
3785 * fixed bug in type checking of dynamic-extent variables. (reported
3787 * optimization: sequence traversal functions use their freedom to
3788 coerce function designators to functions.
3789 * optimization: code with many calls to CLOS methods specialized on
3790 CLOS classes has had redundant type checks removed.
3791 * optimization: added declarations to speed up operations that access
3792 the internal character database (for example STRING-UPCASE)
3793 * optimization: comparison operations between floats and sufficiently small
3794 fixnums no longer create extra rationals
3795 * fixed some bugs related to Unicode integration:
3796 ** portions of multibyte characters at the end of buffers for
3797 character-based file input are correctly transferred to the
3798 start of the buffer at the next read.
3799 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3800 passing it through to OPEN.
3801 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3802 argument given to internal calls to OPEN.
3803 ** the built-in comment readers (introduced by character sequences
3804 ";" and "#|") are more forgiving to encoding errors; they will
3805 STYLE-WARN and then attempt to resync the stream at a character
3806 boundary. (thanks to Teemu Kalvas)
3807 * fixed some bugs in the x86-64 port:
3808 ** Negative short int return values from c-calls are sign-extended
3810 ** The stack is aligned to 16-bytes for c-calls, as required by
3811 the ABI. (thanks to Cheuksan Wang)
3812 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3813 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3814 for enums. (thanks to Vincent Arkesteijn)
3815 ** Multiple small optimizations and bugfixes for floating point
3817 * fixed some bugs revealed by Paul Dietz' test suite:
3818 ** Space, Tab, Linefeed, Return and Page have the invalid
3819 secondary constituent character trait.
3820 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3822 ** WITH-INPUT-FROM-STRING should only update the index place on
3824 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3825 works more reliably.
3826 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3827 with one-dimensional arrays with fill pointers.
3828 ** TYPE-OF failed on a complex with an integer realpart and a
3830 ** compiler failure during type inference for the code of form
3831 (IF (EQL X (THE ...)) ...) (MISC.535).
3833 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3834 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3835 platform. The port supports 61-bit fixnums, large memory spaces
3836 and reloading shared object files.
3837 * enhancement: saving cores with foreign code loaded is now
3838 supported on ppc/Darwin in addition to the previously supported
3840 * enhancement: the statistical profiler now walks deeper into the
3841 call stack for more meaningful call-graphs and accrued time
3842 reports (x86/x86-64 only). It also now reports time spent in
3844 * enhancement: it is now possible to trace most individual methods
3845 of a generic function in addition to tracing the generic function
3847 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3849 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3850 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3851 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3852 produces an error. (thanks to Vincent Arkesteijn)
3853 * bug fix: NAMESTRING on pathnames with :WILD components in their
3854 directories works correctly. (thanks to Artem V. Andreev)
3855 * fixed bug 125: compiler preserves identity of closures. (reported
3857 * bug fixed: functions with &REST arguments sometimes failed with
3858 "Undefined function" when compiled with (DEBUG 3). (reported by
3860 * bug fix: overflow during compiling of setting element of a bit
3861 vector with constant index and value. (reported by Timmy Douglas)
3862 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3863 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3864 * on x86 compiler partially supports stack allocation of dynamic-extent
3866 * GO and RETURN-FROM do not check the extent of their exit points
3867 when compiled with SAFETY 0.
3868 * fixed some bugs related to Unicode integration:
3869 ** encoding and decoding errors are now much more robustly
3870 handled; it should now be possible to recover even from invalid
3871 input or output to the terminal. (thanks to Teemu Kalvas)
3872 ** provided a first cut at implementing STRING-TO-OCTETS and
3873 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3874 ** altered the SB-MD5 contributed module slightly, changing the
3875 interface just enough for it to be supportable for builds where
3876 lisp characters are not eight bits.
3877 * fixed some bugs revealed by Paul Dietz' test suite:
3878 ** the FORMATTER-generated functions for ~V[ conditionals require
3879 the correct number of arguments.
3880 ** READ-FROM-STRING returns the mandated second value when applied
3881 to displaced strings.
3882 ** the #\Rubout and #\Backspace characters are treated as invalid
3883 constituent characters by the tokenizer.
3885 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3886 * new feature: reloading changed shared object files with
3887 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3888 * new feature: references to foreign variables and functions
3889 can now be compiled and loaded before the corresponding shared
3890 object file is loaded, as long as the foreign definitions are
3891 available at runtime.
3892 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3893 supported. (thanks to Dan Debertin)
3894 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3895 just keywords. (thanks to Vincent Arkesteijn)
3896 * fixed bug #331: structure-class instances corresponding to
3897 DEFSTRUCT forms are now created eagerly.
3898 * fixed bug #345: backtraces from calls to undefined functions work
3899 on x86 as well. Related bug #61 is now also partially fixed on x86
3900 (backtraces from throws to unknown catch tags.)
3901 * bug fix: lambda-list parsing is now stricter vrt. order and number
3902 of lambda-list keywords.
3903 * bug fix: as specified by AMOP, an error is signalled if a
3904 class-option appears multiple times in a DEFCLASS form. (reported
3906 * bug fix: RANDOM can be compiled when the compiler derives the type
3907 of its numeric argument as a disjoint set of small integers.
3908 (reported by Paul Dietz)
3909 * bug fix: starting a core saved with shared objects loaded when
3910 those objects are not available no longer causes threaded SBCL to
3911 hang. (reported by Sean Ross)
3912 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3914 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3915 argument, which must always be NIL. (reported by Kalle Niemitalo)
3916 * bug fix: printing 1.0d+23 no longer results in an error.
3917 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3918 * bug fix: structure slot setters preserve evaluation order. (thanks
3920 * fixed some bugs related to Unicode integration:
3921 ** RUN-PROGRAM can allow its child to take input from a Lisp
3922 stream. (reported by Stefan Scholl)
3923 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3924 locales. (reported by Ken Causey)
3925 * fixed some bugs revealed by Paul Dietz' test suite:
3926 ** INCF, DECF and REMF evaluate their place form as specified in
3928 ** FORMATTER expands ~{ ~} iteration directives with V or #
3929 parameters correctly.
3930 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3931 consequent uses no arguments correctly.
3932 ** the system has a partial understanding of the (COMPLEX RATIO)
3934 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3937 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3938 * new feature: a build-time option (controlled by the :SB-UNICODE
3939 keyword feature, enabled by default) for building the system with
3940 support for the entire 21-bit character space defined by the
3942 * new feature: the system now has rudimentary external-format
3943 support; the primary user-visible change at this time is that
3944 characters with the high bit set (such as lower-case-e-acute) will
3945 print correctly to a terminal in a UTF-8 environment.
3946 * minor incompatible change: BASE-CHAR no longer names a class;
3947 however, CHARACTER continues to do so, as required by ANSI.
3948 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3949 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3950 has been moved to the SB-EXT package (temporarily re-exported from
3952 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3953 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3955 * fixed bug #351: better error-handlind and reporting for malformed
3957 * fixed bug #350: bignum-printing is now more memory-efficient,
3958 allowing printing of very large bignums, eg. (expt 2 10000000).
3959 (reported by Bruno Haible)
3960 * fixed bug #302: better primitive-type selection for intersection
3962 * fixed bug #308: non-graphic characters now all have names, as
3963 required. (reported by Bruno Haible)
3964 * bug fix: redefining a class with different superclasses now correctly
3965 removes it from the direct-subclasses of its previous superclasses.
3966 (reported by David Morse)
3967 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3968 new value now works. (reported by Bruno Haible)
3969 * bug fix: correct canonicalization of multiple non-standard slot
3970 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3971 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3972 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3973 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3974 now exists, an signals an error.
3975 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3976 during macroexpansion for non-iteration variables as well. (reported
3977 by Bruno Haible for CMUCL)
3978 * bug fix: Cyclic structures and unprintable objects in compiler
3979 messages no longer cause errors. (reported by Bruno Haible)
3980 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3981 and READ-FROM-STRING all now return a primary value of NIL if
3982 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3983 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3984 (reported by Bruno Haible for CMUCL)
3985 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3986 do not designate a condition. (reported by Bruno Haible for
3988 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3989 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3990 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3991 permitting resolution in favour of any of the conflicting symbols.
3992 (reported by Bruno Haible for CMUCL)
3993 * bug fix: EQUAL compiler optimizations is less aggressive on
3994 strings which can potentially compare true despite having distinct
3995 specialized array element types.
3996 * bug fix: unit enumerations can be defined without dividing by
3997 zero. (thanks to Vincent Arkesteijn)
3998 * FORMAT compile-time argument count checking has been enhanced.
3999 (report from Bruno Haible for CMUCL)
4000 * a partial workaround for the bug 262: the compiler does not try to
4001 inline-expand a local function doing RETURN-FROM from a deleted
4002 BLOCK. (thanks to Peter Denno for the bug report and to David
4003 Wragg for the simple test case)
4004 * fixed some bugs revealed by Paul Dietz' test suite:
4005 ** RENAME-PACKAGE allows all package designators as new package
4007 ** constraint propagation and lambda variable substitution are
4008 more cautious in dealing with partially deleted code.
4009 ** compiler sometimes lost reoptimization passes.
4010 ** CERROR, given a condition as condition designator, passes its
4011 remaining arguments to the continue format control without
4013 ** Case-altering FORMAT directives work correctly on non-ASCII
4015 ** The REAL type specifier handles bounds outside the floating
4016 point ranges without signalling FLOATING-POINT-OVERFLOW.
4017 ** Functions with IR1-transformations can create intercomponent
4018 references to global functions.
4019 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
4021 ** FORMAT ~R treats a nil value for its first parameter correctly.
4023 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
4024 * enhancement: saving cores with foreign code loaded is now
4025 supported on x86/NetBSD and sparc/Linux in addition to the previously
4026 supported platforms.
4027 * bug fix: on some platforms repeated installations caused multiple
4028 copies of HTML documentation to be installed -- should not happen
4029 any more. (reported by Stefan Scholl)
4030 * bug fix: parsing self-recursive alien record types multiple times
4031 no longer causes infinite recursion. (reported by Thomas F. Burdick,
4032 original patch by Helmut Eller for CMUCL)
4033 * bug fix: stack-exhaustion detection works now on NetBSD as well.
4034 (thanks to Richard Kreuter)
4035 * bug fix: defining classes whose accessors are methods on existing
4036 generic functions in other (locked) packages no longer signals
4037 bogus package lock violations. (reported by François-René Rideau)
4038 * bug fix: special variables as DEFMETHOD parameters no longer have
4039 associated bogus type declarations. (reported by David Wragg and
4041 * bug fix: read-write consistency on streams of element-type
4042 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
4043 * bug fix: redefiniton of the only method of a generic function with
4044 no DEFGENERIC no longer emits a full WARNING. In addition,
4045 redefinition of generic functions with no DEFGENERIC to an
4046 incompatible lambda list now signals an error. (thanks to Zach
4048 * bug fix: DEFGENERIC now works even when there's a function of the
4049 same name in an enclosing lexical environment. (thanks to Zach
4051 * fixed compiler failure, caused by instrumenting code during
4052 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
4053 * optimization: added loop analysis and improved register allocation
4054 * fixed some bugs revealed by Paul Dietz' test suite:
4055 ** POSITION on displaced vectors with non-zero displacement
4056 returns the right answer.
4057 ** (SIMPLE-STRING) is a valid type specifier for sequence
4059 ** *PRINT-LEVEL* handling for slotless structures is pedantically
4061 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
4062 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
4064 ** The justification version of the FORMAT ~< directive treats
4065 non-zero minpad parameter correctly.
4067 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
4068 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
4069 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4070 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
4071 the supported interface.
4072 * new feature: Single-stepping of code compiled with DEBUG 2 or
4073 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
4074 * new feature: saving cores with foreign code loaded is now
4075 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
4076 Timothy Moore's work for CMUCL)
4077 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
4078 parameters to * instead of NIL if no initform is supplied.
4079 (reported by Johan Bockgaard)
4080 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
4081 correctly when FUNCALL appears as the car of the form. Note:
4082 despite this FUNCALL forms are not currently subject to
4083 compiler-macro expansion. (port of Raymond Toy's fix for the
4084 same from CMUCL, reported by Johan Bockgaard)
4085 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
4086 (thanks for Teemu Kalvas)
4087 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
4088 case instead of terminating the iteration (thanks for Julian
4089 Squires, Sean Champ and Raymond Toy)
4090 * bug fix: incorrect expansion of defgeneric that caused a style
4091 warning. (thanks for Zach Beane)
4092 * bug fix: slot accessor effective method computation works properly
4093 for classes with multiple non-standard applicable methods on
4094 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
4095 * on x86 compiler supports stack allocation of results of LIST and
4096 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
4097 CMUCL implementation by Gerd Moellmann)
4098 * fixed some bugs revealed by Paul Dietz' test suite:
4099 ** FORMAT strings with both the ~<~:;~> form of the justification
4100 directive and pretty-printing directives cause an error.
4102 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
4103 * incompatible change: the internal functions
4104 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
4105 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
4106 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
4107 instead of the old functions.
4108 * new feature: on platforms where "dladdr" is available foreign
4109 function names now appear in backtraces. (based on Helmut Eller's
4111 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
4112 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
4114 * documentation: ASDF manual is now distributed with SBCL.
4115 * bug fix: SBCL can now load its contributed modules with REQUIRE
4116 even if the system-provided entries have been removed from
4117 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
4119 * bug fix: backtraces involving undefined functions or assembly
4120 routines are more informative. (thanks to Brian Downing)
4121 * bug fix: mutually referent alien structures now work correctly.
4122 (reported by Rick Taube)
4123 * bug fix: structures defined by WITH-ALIEN can be referred to
4124 within other definitions in the same WITH-ALIEN.
4125 * bug fix: division operators (MOD, TRUNCATE and the like) with
4126 constant zero divisors and integer dividends no longer generate
4128 * bug fix: provide default methods for INPUT-STREAM-P and
4129 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
4130 * bug fix: improve the detection and resolution of MOP metacycles
4131 (where effective method computation depends on the generic function
4132 having its effective method computed). (reported by Bruno Haible)
4133 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
4134 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
4135 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
4136 * bug fix: pathnames with relative directory components can be
4137 represented relative to default pathnames.
4138 * optimization: in taking the GCD of bignums, reduce the two bignums
4139 to approximately the same size (using Euclid's algorithm) before
4140 applying the more sophisticated binary GCD. (thanks to Juho
4142 * optimization: COUNT on bitvectors now operates word-at-a-time.
4143 * optimization: ASH with a positive, but not necessarily constant,
4144 (leftwards) shift, when in a modular context, is compiled to a
4146 * fixed some bugs revealed by Paul Dietz' test suite:
4147 ** FORMAT variable parameters ("~V<char>") are defaulted properly
4148 if the corresponding argument is NIL.
4149 ** FORMAT directives accepting a minpad parameter treat negative
4151 ** literal commas as character parameters to FORMAT directives are
4153 ** literal spaces directly after ~<Newline> directives within a
4154 format-logical-block (~:< ~@:>) do not induce :FILL-style
4155 conditional newlines.
4156 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
4157 as specified: it no longer includes conditional newlines).
4158 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
4160 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
4161 :PER-LINE-PREFIX argument does not evaluate to a string.
4163 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
4164 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
4165 the manual for details; for now, package locks can be disabled by
4166 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
4167 if no major problems are found then it is likely that they will be
4168 compiled in unconditionally.
4169 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
4170 unsupported operators on all platforms. To load a shared library
4171 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
4172 object file, link it into a shared library outside of SBCL and
4173 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
4175 * bug workaround: ROOM T and the GC were not working together
4176 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
4177 reporting facility aren't preserved. That reporting has been
4178 disabled, so now until and unless someone figures out how to make it
4179 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
4180 * minor incompatible change: as threatened around sbcl-0.8.0, the
4181 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
4182 The symbols are also exported from SB-PCL for backwards
4183 compatibility, but more so than before SB-PCL should be treated as
4184 an implementation-internal package.
4185 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
4187 * the SB-SPROF contrib now works on (most) non-x86 architectures.
4188 It is known as of this release not to work on the Alpha, however.
4189 * fixed bug #167: errors signalled due to illegal syntax in method
4190 bodies are now more legible.
4191 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
4192 designators and can hence be used with TYPEP.
4193 * fixed bug #333: CHECK-TYPE now ensures that the type error
4194 signalled, if any, has the right object to be accessed by
4195 TYPE-ERROR-DATUM. (reported by Tony Martinez)
4196 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
4197 5.1.2.3 for multiple-value place subforms. (reported by Kalle
4199 * fixed bug #334: programmatic addition of slots using specialized
4200 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
4201 and :ALLOCATION :CLASS slots.
4202 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
4203 float exponents. (rereported by Peter Seibel)
4204 * fixed a bug: #\Space (and other whitespace characters) are no
4205 longer considered to be macro characters in standard syntax by
4206 GET-MACRO-CHARACTER.
4207 * fixed bug: initialization of condition class metaobjects no longer
4208 causes an instance of the condition to be created. (reported by
4210 * fixed bug: it is now possible to have slots such that
4211 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
4212 description is neither :INSTANCE nor :CLASS.
4213 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
4214 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
4215 SLOT-VALUE-USING-CLASS), and no longer causes errors with
4216 non-standard SLOT-DEFINITION-ALLOCATION values.
4217 * fixed bugs: various race conditions handling exiting threads.
4218 CL-PPCRE's thread torture test now passes.
4219 * fixed arguably-a-bug: GC time proportional to number of threads in
4220 system even when most of them are idle
4221 * optimization: improved performance of BIT and SBIT on bit-vectors.
4222 * .fasl file incompatibility: The fasl file version number has
4223 been incremented because of changes associated with package locks.
4225 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
4226 * minor incompatible change: the system no longer provides
4227 optimization hints (conditions which are TYPEP
4228 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
4229 mode; these hints are still emitted when higher SPEED optimization
4231 * new contrib module: a sampling profiler (profiling by statistical
4232 sampling, rather than by instrumenting functions) is available as
4233 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
4234 * the behaviour of the standard function ED is now customizeable by
4235 third parties through a hook variable: see ED's documentation
4236 string for information on the protocol.
4237 * the compiler no longer emits efficiency notes for (FUNCALL X)
4238 when the type of X is uncertain under default optimization
4240 * fixed bug 276: mutating a binding of a specialized parameter to a
4241 method to something that is not TYPEP the specializer is now
4243 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4244 exhibit the required behaviour on the x86 platform. (thanks to
4245 Peter van Eynde, Eric Marsden and Bruno Haible)
4246 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4247 even for difficult arguments. (reported by Peter Graves)
4248 * fixed bug 141a: the backquote printer now descends quoted
4250 * fixed another bug in backquote printing: no more destructive
4251 modification of the form's list structure. (reported by Brian
4253 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4254 move between its address being taken and the call to
4255 interrupt_thread, fixing a crashing race condition.
4256 * the SB-POSIX contrib implementation has been adjusted so that it
4257 no longer exhibits ridiculously poor performance when constructing
4258 instances corresponding to C structs.
4260 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4261 * minor incompatible change: the sb-grovel contrib now treats C
4262 structures as alien (in the sense of SB-ALIEN) objects rather than
4263 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4264 has implications for memory management of client code
4265 (sb-grovel-returned objects must now be manually managed) and for
4266 type safety (alien objects now have full types).
4267 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4268 used to control emission of compiler diagnostics, rather than the
4269 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4270 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4271 quality should be considered deprecated.
4272 * install.sh now installs the user manual as well
4273 * (not quite a new documentable feature, but worth considering in
4274 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4275 beginnings of a semantically meaningful condition hierarchy is
4276 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4278 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4279 designator as the defaults argument.
4280 * fixed bug: Displaced arrays whose displaced-to array has become
4281 too small now cause ARRAY-DIMENSION to signal an error, providing
4282 for safer bounds-checking. (reported by Bruno Haible)
4283 * fixed bug: DEFCLASS slot definitions with identical :READER and
4284 :WRITER names now signal a reasonable error. (reported by Thomas
4286 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4288 * fixed bug: Invalid slot specification errors now print correctly.
4289 (thanks to Zach Beane)
4290 * fixed bug 320: Shared to local slot value transfers in class
4291 redefinitions now happen corrently from superclasses as
4292 well. (reported by Bruno Haible)
4293 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4295 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4296 improper lists correctly. (reported by Bruno Haible)
4297 * fixed bug 313: source-transform for <fun-name> was erroneously
4298 applied to a call of a value of a variable with name <fun-name>.
4299 (reported by Antonio Menezes Leitao)
4300 * fixed bug 307: The obsolete instance protocol ensures that
4301 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4302 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4303 remove dead unknown-values globs from the middle of the stack.
4304 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4305 easier to resume long computations after using *BREAK-ON-SIGNALS*
4306 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4307 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4308 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4309 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4310 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4311 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4313 * fixed a (fairly theoretical) bug in string printing: if
4314 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4315 does not have array-element-type equal to the most general string
4317 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4318 function name. (thanks to Nikodemus Siivola)
4319 * fixed bug: compile-time format string checker failed on
4320 non-closed ~{. (reported by Thomas F Burdick)
4321 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4322 don't warn on legal loop code involving more than one aggregate
4323 boolean. (thanks to Nikodemus Siivola)
4324 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4325 in keyword position to MAKE-PACKAGE was not being reported as
4327 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4328 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4330 * fixed bugs 280 and 312: the checking for multiple definitions in a
4331 file is less likely to become confused by uses of inline
4333 * fixed bug: the #S reader macro performs the keyword coercion
4334 specified for slot names. (reported by Kalle Niemitalo)
4335 * fixed bug: lambda lists may contain symbols whose names start with
4336 & but are not lambda-list-keywords; their occurrence triggers a
4338 * fixed bug 321: define-method-combination argument lambda lists do
4339 not cause invalid code to be generated when &optional or &aux
4340 variables have default values. (reported by Bruno Haible)
4341 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4342 have CLOS classes; this appears also to have fixed reported
4343 instability in stack exhaustion detection.
4344 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4345 MUFFLE-WARNING when no associated restart is present is now
4347 * optimization: rearranged the expansion of various defining macros
4348 so that each expands into only one top-level form in a
4349 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4351 * optimization: used a previously little-used slot in symbols to
4352 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4354 * fixed some bugs revealed by Paul Dietz' test suite:
4355 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4357 ** Fixed an optimization bug related to inheritance of initforms
4358 from local to shared slots.
4359 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4360 ** CAST optimizer forgot to flush argument derived type.
4361 ** print/read consistency on floats is now orders of magnitude
4362 more likely. (thanks also to Bruno Haible for a similar report
4364 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4365 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4366 for objects of type REAL. Make it so.
4367 ** SXHASH is specified (infelicitously) to respect similarity,
4368 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4369 it so. (thanks to Markus Ziegler)
4370 ** on the Alpha, the compiler succeeds in compiling functions
4371 returning a known number of arguments greater than 63.
4372 ** fixed handling of invalid NIL arguments in keyword position
4374 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4376 ** provided a readably-printable representation for RANDOM-STATE
4378 ** ensured that pathnames, where they have a namestring, always
4379 print using #P"..." syntax.
4381 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4382 * Support for the forthcoming 2.0 version of the NetBSD kernel
4383 running on x86 hardware has been added. (thanks to Perry
4384 E. Metzger most immediately, and others for their past work)
4385 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4386 current release version; SBCL's OpenBSD support had been broken
4387 since about the time of OpenBSD's switch to ELF binary format.)
4388 * [placeholder for DX summary]
4389 ** user code with &REST lists declared dynamic-extent, under high
4390 speed or space and low safety and debug optimization policy.
4391 * The manual has been converted to Texinfo format and the debugger
4392 chapter from the cmucl manual has been added.
4393 * A facility has been added to extract documentation strings from
4394 sbcl and store them as Texinfo-formatted snippets for inclusion in
4395 the manual (via Texinfo's @include directive)
4396 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4397 the test case to Dave Roberts)
4398 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4399 pointers. (reported by Sean Ross)
4400 * bug fix: PROFILE output is printed nicely even for large numerical
4401 values. (thanks to Zach Beane)
4402 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4403 greater than 32 handle EOF correctly.
4404 * bug fix: on X86 an immediate argument of the IMUL instruction is
4405 correctly printed in disassembly. (thanks to Lutz Euler)
4406 * bug fix: class slots in redefined classes preserve their old
4407 values. (thanks to Bruno Haible and Nikodemus Siivola)
4408 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4409 succeeds. (reported by Marco Baringer)
4410 * fixed some bugs revealed by Paul Dietz' test suite:
4411 ** READ-SEQUENCE now works on ECHO-STREAMs.
4412 ** RATIONALIZE works more according to its specification. (thanks
4415 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4416 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4417 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4418 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4419 should matter to you only if you rebind the printer control
4420 variables and then find you want different bindings in the
4421 debugger than in the ordinary execution of your program.)
4422 * The runtime build system has been tweaked to support building
4423 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4424 assembler and linker. (thanks to Nikodemus Siivola)
4425 * Unbound, undefined, undeclared variables now trigger full
4426 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4427 more often programmer error than deliberate exploitation of undefined
4429 * optimization: the hash algorithm for strings has changed to one
4430 that is less vulnerable to spurious collisions. (thanks to Juho
4432 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4433 needless bounds checking. (thanks to Juho Snellman)
4434 * optimization: implemented multiplication as a modular
4435 (UNSIGNED-BYTE 32) operation on the PPC backend.
4436 * fixed some bugs revealed by Paul Dietz' test suite:
4437 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4439 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4440 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4441 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4443 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4445 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4447 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4448 their output stream on EOF from read.
4449 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4450 have been read to end-of-file.
4451 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4453 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4454 description of determination of which consecutive characters
4456 ** Printing the "Space" character with escaping on now yields "#\\ ",
4457 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4458 ** Reading floating-point numbers with *READ-BASE* set to a number
4459 less than 10 works correctly.
4460 ** Reading floating-point numbers with *READ-BASE* set to a number
4461 more than 10 works correctly.
4462 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4463 the readtable currently in effect.
4465 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4466 * minor incompatible change: parsing of namestrings on a physical
4467 (Unix) host has changed; numbers after the final #\. in a
4468 namestring are no longer interpreted as a version field. This is
4469 intented to be largely invisible to the user, except that the
4470 meaning of the namestring "*.*.*" has changed: it now refers to a
4471 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4472 should usually be replaced by
4473 (make-pathname :name :wild :type :wild :version :wild)
4474 with the added benefit that this is more likely to be portable.
4475 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4476 option to OPEN now signals an error if the file being opened
4477 exists; this may have an impact on existing code.
4478 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4479 signals received, on the PowerPC platforms (both Linux and
4480 Darwin). (thanks to Pierre Mai for pointing out the location of
4482 * several fixes on OS X: The system now builds and runs cleanly on
4483 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4484 (thanks to Brian Mastenbrook)
4485 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4486 second-resolution: integer multiples of 1/3600 between -24 and 24.
4487 (thanks to Vincent Arkesteijn)
4488 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4489 type when called with 1 argument; PEEK-CHAR checked type of
4490 PEEK-TYPE only after having read first character from a
4491 stream. (reported by Peter Graves)
4492 * bug fix: the garbage collector now has much better locality
4493 behaviour, and in particular no longer treats all memory as being
4494 exhausted when many small objects point to each other in a deeply
4496 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4497 recognized as being TYPEP their class.
4498 * bug fix: the PUSHNEW documentation string has been corrected.
4499 (thanks to Vincent Arkesteijn)
4500 * bug fix: defaulting of the value for the last of an atypically
4501 large number of multiple values being bound was not being
4502 performed correctly on the Alpha or PPC platforms
4503 * optimization: implemented multiplication as a modular
4504 (UNSIGNED-BYTE 32) operation on the x86 backend.
4505 * optimization: SEARCH on simple-base-strings can now be open-coded.
4506 (see also contrib/compiler-extras.lisp for inspiration for
4507 teaching the compiler about the Boyer-Moore algorithm).
4508 * value, returned by MAX (and MIN) called with several EQUALP, but
4509 not EQL, arguments now does not depend on compiler settings.
4510 * fixed some bugs revealed by Paul Dietz' test suite:
4511 ** in stack analysis liveness information is propagated from
4512 non-local entry points.
4513 ** pathwise CAST removing failed when the CAST node did not start
4515 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4516 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4518 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4519 host is already defined.
4520 ** RENAME-FILE works on streams instead of signalling an internal
4522 ** PEEK-CHAR uses the current readtable when determining whether
4523 or not a character is whitespace.
4524 ** MERGE-PATHNAMES handles the case when the pathname does not
4525 specify a name while the default-pathname specifies a version.
4526 ** Pathnames now stand a better chance of respecting print/read
4528 ** Attempting to use standardized file system operators with a
4529 pathname with invalid :DIRECTORY components signals a
4531 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4533 ** DIRECTORY on logical pathnames is more correct.
4534 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4535 signal a TYPE-ERROR if their argument is not a stream.
4536 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4537 designator argument does not designate a stream.
4538 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4539 examining the synonym.
4540 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4542 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4543 element-type larger than ([UN]SIGNED-BYTE 32).
4545 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4546 * When built with the :SB-FUTEX feature, threaded builds now take
4547 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4548 for faster/more reliable mutex and condition variable support.
4549 * Incompatible change (but one you probably shouldn't have been using
4550 anyway): the interface and code for arbitrating between multiple
4551 threads in the same user session has been redesigned.
4552 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4553 error when called without an explicit environment argument.
4554 (thanks to Nikodemus Siivola)
4555 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4556 confused about their position. (thanks to Adam Warner and Gerd
4558 * bug fix: Pretty printing backquoted forms with unquotations in the
4559 argument list position of various code constructs such as LAMBDA
4560 now works correctly. (reported by Paul Dietz)
4561 * bug fix: Pretty printing unquotations no longer loses all
4562 stream position information.
4563 * optimization: performance of string output streams is now less
4564 poor for multiple small sequence writes.
4565 * optimization: performance of CSUBTYPEP in the presence of complex
4566 expressions involving CONS and NOT many times has been improved.
4567 (reported by Paul Dietz)
4568 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4570 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4571 streams for the REPL, for the debugger, and so on. (thanks to
4573 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4574 * fixed some bugs revealed by Paul Dietz' test suite:
4575 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4576 is ignored if it is too small, rather than propagating through
4577 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4578 ** extremely complex negations of CONS types were not being
4579 sufficiently canonicalized, leading to inconsistencies in
4581 ** VALUES tranformer lost derived type.
4583 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4584 * fixed a bootstrapping bug: the build process no longer assumes
4585 that the various BOOLE-related constants have the same value in
4586 host and target lisps. (noted by Paul Dietz' test suite on an
4587 SBCL binary built from CLISP)
4588 * The system can now be dynamically linked on the MIPS platform,
4589 which enables dynamic loading of foreign code from Lisp. (thanks
4590 to Ralf Baechle for discussions on the MIPS ABI)
4591 * The system now records debugging information for its own source
4592 files in a filesystem-position-independent manner, relative to
4593 the "SYS" logical host.
4594 * fixed a compiler bug: MV-LET convertion did not check references
4595 to the "max args" entry point. (reported by Brian Downing)
4596 * tweaked disassembly notes to be less confident about proclaiming
4597 some instruction as an LRA. (thanks to Brian Downing)
4598 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4599 now each have their own history, command character, and other
4600 characteristics. (thanks to David Lichteblau)
4601 * fixed some bugs revealed by Paul Dietz' test suite:
4602 ** compiler failure in compiling LOGAND expressions including a
4604 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4605 shift greater than 32.
4606 ** FLUSH-DEST did not mark blocks for type check regeneration.
4607 ** HANDLER-CASE failed to accept declarations in handler clauses
4608 in some circumstances.
4610 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4611 * New code in contrib/sb-introspect (still probably not entirely
4612 stable yet) provides some support for smart Lisp development
4613 environments like SLIME.
4614 * The conditions signalled for errors occurring when loading .fasl
4615 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4616 in a way which should help ASDF recover gracefully.
4617 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4618 stuff has been cleaned up. If you code contrib/ stuff, this might
4619 affect you, and you can look at contrib/README, contrib/STANDARDS,
4620 and/or the 0.8.4.27 diff to check.
4621 * In full calls the compiler now does not generate checks for declared
4622 argument types for all arguments.
4623 * various threading fixes
4624 ** and some experimental patches which didn't make it into
4625 the main tree for this release, but which are shipped in
4626 contrib/experimental-thread.patch as a possible fix for some
4627 failures (deadlock, spinning...) in GC-intensive multithreaded
4629 * fixed PPC build problem (source code incompatibility of different
4630 library versions): added offsetof() hackery which attempts to divine
4631 where glibc maintainers put uc_mcontext today
4632 * fixed bug 282: compiler does not trust type assertions while passing
4633 arguments to a full call.
4634 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4635 &OPTIONAL VALUES type parameter.
4636 * fix bug 214: algorithm for noting rejected templates is now more
4637 similar to that of template seletion. (also reported by rydis on
4639 * fixed bug 141b: printing backquoted information readably and prettily
4640 inserts a space where necessary.
4641 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4642 (CHARACTER 10) are now reported as errors, rather than propagated
4643 as unknown types. (reported by piso on #lisp)
4644 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4645 with values NIL and :ERROR. (thanks to Milan Zamazal)
4646 * fixed bug 191c: CLOS now does proper keyword argument checking as
4647 described in CLHS 7.6.5 and 7.6.5.1.
4648 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4649 longer raise an error; further, using a list as a for-as-arithmetic
4650 counter now raises a meaningful error.
4651 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4652 now understood by sequence creation functions such as MAKE-SEQUENCE
4654 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4655 a STRING-INPUT-STREAM.
4656 * compiler enhancement: SIGNUM is now better able to derive the type
4658 * type declarations inside WITH-SLOTS are checked. (reported by
4660 * fixed some bugs revealed by Paul Dietz' test suite:
4661 ** incorrect optimization of TRUNCATE for a positive first
4662 argument and negative second.
4663 ** compiler failure in let-convertion during flushing dead code.
4664 ** compiler failure while deriving type of TRUNCATE on an
4665 interval, containing 0.
4666 ** ASH of a negative bignum by a negative bignum count now returns
4668 ** intersection of CONS types now canonicalizes properly, fixing
4669 inconsistencies in SUBTYPEP.
4671 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4672 * incompatible change: The --disable-debugger command line
4673 option now clobbers the debugger at a more fundamental
4674 level, by redefining #'INVOKE-DEBUGGER instead of by
4675 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4676 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4677 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4678 enter the debugger REPL and then suffer recursive errors
4679 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4680 while under the new system, BREAK in --disable-debugger mode
4681 terminates the system just as an unhandled error would.
4682 * fixed compiler performance when processing loops with a step >1;
4683 * bug fix: DOCUMENTATION now retrieves generic function
4684 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4685 support has been systematized, and now supports the methods
4686 specified by ANSI, along with a default method and a method for
4687 slot documentation. (reported by Nathan Froyd)
4688 * bug fix: effective methods associated with a generic function are
4689 no longer cached over a change of that generic function's method
4690 combination. (reported by Andreas Fuchs)
4691 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4692 names a non-existent directory. (thanks to Andreas Fuchs)
4693 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4694 the PPC platform, lead to stack corruption; this has been fixed.
4695 (reported by Rainer Joswig)
4696 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4697 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4698 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4699 arithmetic in general, is now much more reliable on the PPC
4701 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4702 platform now returns the right answer.
4703 * optimization: restored some effective method precomputation in
4704 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4705 precomputation is now tunable.
4706 * optimization: compiler-internal data structure use has been
4707 reviewed, and changes have been made that should improve the
4708 performance of the compiler by about 20%.
4709 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4710 simple-base-strings and simple-bit-vectors is improved.
4711 * optimization: the optimization of 32-bit logical and arithmetic
4712 functions introduced in version 0.8.3 on the x86 has been
4713 implemented on the mips, ppc and sparc platforms; an
4714 implementation of the same facility, but for 64-bit arithmetic,
4715 has been added for the alpha.
4716 * microoptimization: the compiler is better able to make use of the
4717 x86 LEA instruction for multiplication by constants.
4718 * bug fix: in some situations compiler did not report usage of
4719 generic arithmetic in (SPEED 3) policy.
4720 * bug 145b fix: compiler used wrong type specifier while converting
4721 MEMBER-types to numeric.
4722 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4724 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4725 index argument now works properly on the Alpha platform.
4726 * bug fix: floating point exception treatment on the Alpha platform
4728 * bug fix: FILE-POSITION works much better on string input and
4729 output streams. (thanks to Nikodemus Siivola)
4730 * bug fix: many threading/garbage collection symptoms sorted.
4731 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4732 might be pseudo-atomic.
4733 * internal change: Stopping for GC is now done with signals not
4734 ptrace. GC is now done in whichever thread wanted it, instead of
4736 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4738 * bug fix: result form in DO is not contained in the implicit
4740 * incompatible change: ICR structure is changed; the value part of
4741 CONTINUATION is now called LVAR; corresponding functions are
4742 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4743 * added type deriver for ISQRT (thanks to Robert E. Brown).
4744 * bug fix: better support for loading from the command line when an
4745 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4747 * fixed some bugs revealed by Paul Dietz' test suite:
4748 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4749 ** ROUND and FROUND now give the right answer when given very
4750 small float arguments.
4751 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4753 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4754 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4755 ** LCM should return a non-negative integer.
4756 ** PARSE-INTEGER returned the index of a terminator instead of the
4757 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4758 ** PARSE-INTEGER returned an incorrect index being applied to a
4760 ** LCM with two arguments of 0 returns 0 rather than signalling
4762 ** unsigned addition of a 32-bit constant with the high bit set no
4763 longer causes an internal compiler error on the x86.
4764 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4765 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4766 with negative last argument.
4767 ** byte specifiers with zero size and position no longer cause
4768 an error during type derivation.
4769 ** bignum multiplication on the Alpha platform now returns the
4771 * porting: The system now builds on SuSE AMD64, although it still
4772 generates a 32-bit binary.
4773 * .fasl file incompatibility: The fasl file version number has
4774 been incremented (because of the changes to internal compiler
4775 data structures referred to above).
4777 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4778 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4779 more accurately, on the Darwin kernel running on PowerPC hardware.
4780 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4781 * Compiler code deletion notes now signal a condition of type
4782 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4783 an associated MUFFLE-WARNING restart.
4784 * The compiler now performs limited argument count validation of
4785 constant format strings in FORMAT, and where appropriate in ERROR,
4786 CERROR and WARN. (thanks to Gerd Moellmann)
4787 * New ASDF-INSTALL contrib can be used for automatic download and
4788 installation of third-party Lisp code from CCLAN or other sites
4790 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4791 which forces another thread to execute a function supplied by the
4793 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4794 now accept and act upon their :ELEMENT-TYPE keyword argument.
4795 (reported by Martin Atzmueller, Edi Weitz)
4796 * bug fix: FILE-POSITION now accepts position designators up to
4797 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4798 is the greater. (thanks to Patrik Nordebo)
4799 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4800 Kalle Olavi Niemitalo)
4801 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4802 printable. (reported by Eric Marsden)
4803 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4804 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4805 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4806 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4807 (thanks to Stig Sandoe)
4808 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4809 UNREAD-CHAR now correctly includes the unread character in the
4810 target sequence. (thanks to Gerd Moellmann)
4811 * bug fix in threaded builds: the system can now be suspended and
4812 resumed by shell job control with minimal disruption.
4813 * bug fixes in times and timezones >2038AD
4814 * better handling of "where is GNU make?" problem in build scripts
4815 (thanks to Nikodemus Siivola)
4816 * new optimization: inside a named function any reference to a
4817 function with the same name is considered to be a self-reference;
4818 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4819 optimization quality.
4820 * new optimization on x86: logical functions and + now have
4821 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4822 used when the result is truncated to 32 bits.
4823 * VALUES declaration is partially enabled.
4824 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4825 * fixed some bugs revealed by Paul Dietz' test suite:
4826 ** The system now obeys the constraint imposed by
4827 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4828 types form a lattice under type intersection.
4829 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4830 ** ASSOC now ignores NIL elements in an alist.
4831 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4832 and (1+ MOST-POSITIVE-FIXNUM) answers.
4833 ** The addition of a method with invalid qualifiers to a generic
4834 function does not cause an error to be signalled immediately;
4835 a warning is signalled, and the error is generated only on
4836 calling the generic function.
4837 * changed .fasl file version number, in part to add type codes for
4838 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4839 obscure ANSI requirements
4841 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4842 * fixed bug 148: failure to inline-expand a local function left
4843 garbage, confusing the compiler.
4844 * fixed bugs 3cd: structure slot readers perform type check if the
4845 slot can have an invalid value (i.e. it is either not initialized
4846 or can be written with a less specific slot writer).
4847 * bug fix: the compiler now traps array references to elements off
4848 the end of an array; previously, the bounds checking in some
4849 circumstances could go off-by-one.
4850 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4852 * type declarations for array element types now obey the description
4853 on the CLHS page "Declaration TYPE", as per discussions on
4854 sbcl-help around 2003-05-08. This means that a declaration
4855 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4856 declaration, all references to BAR will be asserted or assumed
4857 (with THE, so dependent on compiler policy) to involve objects of
4858 type FOO. Note that no such declaration is implied in
4859 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4860 * declared types of functions from the "Conditions"
4861 chapter. (reported by Paul Dietz)
4862 * bug fix: CERROR accepts a function as its first argument.
4863 * bug fix: NTH an NTHCDR accept a bignum as index
4864 arguments. (reported by Adam Warner)
4865 * optimization: character compare routines now optimize comparing
4866 against a constant character. (reported by Gilbert Baumann)
4867 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4868 argument now works properly on the MIPS platform.
4869 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4870 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4871 declared to have a functional type, does not cause an error
4873 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4874 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4875 * fixed bug: if last continuation of a deleted block has a
4876 destination, this destination should be deleted too. (reported by
4878 * fixed a bug in the bootstrap process: the host compiler's values
4879 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4880 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4881 test case from Patrik Nordebo)
4882 * improved the ability of the disassembler on the PPC platform to
4883 provide helpful disassembly notes.
4884 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4885 the class in more cases than previously.
4886 * bug fix: FILE-POSITION now understands :START and :END for
4887 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4888 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4889 8) data. (thanks to David Lichteblau)
4890 * bug fix: it is possible to add a method to a generic function
4891 without lambda list.
4892 * bug fix: reader failed to signal END-OF-FILE inside an
4893 object representation. (reported by Nikodemus Siivola)
4894 * fixed some bugs revealed by Paul Dietz' test suite:
4895 ** LAST and [N]BUTLAST should accept a bignum.
4896 ** condition slot accessors are methods.
4897 ** (VECTOR NIL) is a subtype of STRING.
4899 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4900 * minor incompatible change: some nonsensical specialized lambda
4901 lists (used in DEFMETHOD) which were previously ignored now signal
4903 * minor incompatible change: the system is now aware of the types of
4904 variables in the COMMON-LISP package, and will signal errors for
4905 most violations of these type constraints (where previously they
4906 were silently accepted).
4907 * minor incompatible change: COMPILE-FILE now uses the freedom
4908 afforded (ANSI 3.2.2.3) to use derived function types for
4909 functions defined in the same file. This also permits the system
4910 to warn on static type mismatches and function
4911 redefinition. (Currently it does not work with high DEBUG level.)
4912 * minor incompatible change: VALUES declaration is disabled.
4913 * When issuing notes, the compiler now signals a condition of type
4914 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4915 restart for use in user handlers. It is expected that the
4916 COMPILER-NOTE condition will eventually become a condition
4917 supertype to a hierarchy of note types, which will then be
4918 handleable in a similar fashion. However, at the moment, no such
4919 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4920 but it's an implementation detail, not a classification for the
4922 * Changes in type checking closed the following bugs:
4923 ** type checking of unused values (192b, 194d, 203);
4924 ** template selection based on unsafe type assertions (192c, 236);
4925 ** type checking in branches (194bc).
4926 * A short form of VALUES type specifier has ANSI meaning (it has
4927 increased the number of situations when SBCL cannot perform type
4929 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4930 keywords or constants is permissible.
4931 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4932 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4933 classes. (thanks to Antonio Martinez)
4934 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4935 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4936 argument to a pretty-print stream. Instead, it leaves any such
4937 operations to DESCRIBE-OBJECT methods.
4938 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4940 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4941 lambda lists. (thanks to David Lichteblau)
4942 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4943 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4944 (thanks to Gerd Moellmann)
4945 * fixed bug 246: increased compilation speed of long
4946 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4948 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4950 * DEFCONSTANT now throws a condition of type
4951 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4952 constant to a non-EQL value; CONTINUE and ABORT restarts
4953 respectively change and preserve the value.
4954 * fixed bug 63: The code walker, part of the implementation of CLOS,
4955 is now better at handling symbol macros.
4956 * bug fix: There is no longer an internal implementation type named
4957 CL:LENGTH. (reported by Raymond Toy)
4958 * bug fix: In macro-like defining macros/special operators the
4959 implicit block does not enclose the lambda list.
4960 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4961 enclosed in parentheses) are not suitable as type specifiers, and
4962 their use properly signals an error now.
4963 * bug fix: An argument count mismatch for a type specifier in code
4964 being compiled no longer causes an unhandled error at compile
4965 time, but signals a compile-time warning.
4966 * fixed simple vector readable printing
4967 * bug fix: DESCRIBE takes more care over whether the class
4968 precedence list slot of a class is bound before accessing it.
4969 (reported by Markus Krummenacker)
4970 * bug fix: FORMATTER can successfully compile pretty-printer format
4971 strings which use variants of the ~* directive inside.
4972 * bug fix: SEARCH now applies its TEST predicate to the elements of
4973 the arguments in the correct order. (thanks to Wolfhard Buss)
4974 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4975 in type inference. (thanks to Robert E. Brown)
4976 * bug fix: Reading in symbols with an explicit package name of ""
4977 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4978 * fixed some bugs revealed by Paul Dietz' test suite:
4979 ** NIL is now allowed as a structure slot name.
4980 ** Arbitrary numbers, not just REALs, are allowed in certain
4981 circumstances in LOOP for-as-arithmetic clauses.
4982 ** Multiple class redefinitions before slot access no longer
4983 causes a type error.
4984 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4985 association between the name and a class.
4986 ** Generic functions with non-standard method-combination and over
4987 five methods all of which return constants no longer return NIL
4988 after the first few invocations. (thanks to Gerd Moellmann)
4989 ** CALL-NEXT-METHOD with no arguments now passes the original
4990 values of the arguments, even in the presence of assignment.
4991 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4993 ** DISASSEMBLE works with closures and funcallable instances.
4994 ** ADD-METHOD now returns the generic function, not the new method.
4995 ** FIND-METHOD signals an error if the lengths of the specializers
4996 is incompatible with the generic function, even if the ERRORP
4998 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4999 which its argument is a member.
5000 ** DEFCLASS only redefines the class named by its class-name
5001 argument if that name is the proper name of the class;
5002 otherwise, it creates a new class.
5003 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
5004 of the UNBOUND-SLOT condition to the name of the slot.
5005 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
5006 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
5007 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
5008 SLOT-MAKUNBOUND in the specified fashion.
5010 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
5011 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
5012 cross-compilation host. As a consequence, we can now bootstrap our
5013 way up to SBCL starting with a bare gcc toolchain and human-readable
5014 source code (first the source to CLISP, then the source to SBCL).
5015 * A contributed module containing a partial implementation of the
5016 simple-streams interface has been included. (thanks to Rudi
5018 * A contributed module implementing the RFC1321 Message Digest
5019 Algorithm, known as MD5, has been included.
5020 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
5021 no longer has any effect, as the code controlled by this feature
5022 has been deleted. (As far as we know, no-one has ever built using
5023 this feature, and its semantics were confused in any case).
5024 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
5025 work on conditions (as required by the ANSI specification),
5026 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
5027 expected behaviour on conditions. Users should note, however,
5028 that such behaviour is not required by the ANSI specification,
5029 and so use of this behaviour may render their code unportable.
5030 * fixed some bugs revealed by Paul Dietz' test suite:
5031 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
5033 ** &ENVIRONMENT parameter in macro lambda list is bound first.
5034 ** SXHASH on condition objects no longer returns NIL.
5035 ** :ALLOCATION :CLASS slots are better treated; their values are
5036 updated on class redefinition, and initforms inherited from
5037 superclasses are applied.
5038 ** REMOVE-METHOD returns its generic function argument even when
5039 no method was removed.
5040 ** SHARED-INITIALIZE now initializes the values of the requested
5041 slots, including those with :ALLOCATION :CLASS.
5042 ** ALLOCATE-INSTANCE now works on structure classes defined via
5043 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
5045 ** SLOT-EXISTS-P now works on conditions, as well as structures
5047 ** MAKE-LOAD-FORM now has the required methods on
5048 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
5049 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
5050 keyword, and now implements the SLOT-NAMES argument.
5051 ** methods with &OPTIONAL arguments no longer allow too many
5052 arguments to be passed in the call without error.
5053 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
5054 option is consistent with the required arguments of the generic
5055 function lambda list.
5056 * bug fix: REQUIRE accepts a string designator. (Thanks to
5058 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
5059 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
5060 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
5061 * bug fix: The compiler now checks for duplicated variables in macro
5063 * bug fix: SETQ on globals returns the correct value.
5064 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
5065 not a COMPILER-ERROR (followed by some other strange error on
5066 choosing the CONTINUE restart).
5067 * bug fix: make.sh and friends are now more consistent in the way that
5068 they look for GNU "make".
5070 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
5071 * experimental native threads support (on x86 Linux >=2.4 only).
5072 This is not compiled in by default: you need to add :SB-THREAD to
5073 the target features. See the "Beyond ANSI" chapter of the manual
5075 * fix for longstanding nonANSIism: The old distinction between
5076 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
5077 The return value from CL:FIND-CLASS is now a CLOS class, and
5078 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
5079 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
5080 * An interface to the MetaObject Protocol, as described in Kiczales,
5081 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
5082 MIT Press, 1991, is available from the SB-MOP package.
5083 * incompatible change: the SB-PCL package should now be considered
5084 a private implementation detail, and no longer a semi-private MOP
5086 * minor incompatible change: due to rearrangement for threads, the
5087 control stack and binding stack are now allocated at arbitrary
5088 addresses instead of being hardcoded per-port. Users affected by
5089 this probably have to be doing advanced things with shared
5090 libraries, and will know who they are.
5091 * minor incompatible change: Previously, all --eval forms used were
5092 processed with READ before any of them were processed with EVAL.
5093 Now each --eval form is processed with both READ and EVAL before
5094 the next --eval form is processed. (Thus package operations like
5095 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
5096 work as the user might reasonably expect.)
5097 * minor incompatible change: *STANDARD-INPUT* is now only an
5098 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
5100 * minor incompatible change: Y-OR-N-P is now character-oriented,
5101 not line oriented. Also, YES-OR-NO-P now works without errors.
5102 (thanks to Antonio Martinez)
5103 * sb-aclrepl module improvements: an integrated inspector, added
5104 repl features, and a bug fix to :trace command.
5105 * Known functions, which cannot be open coded by the backend, are
5106 considered to be able to check types of their arguments. (fixing
5107 a bug report by Nathan J. Froyd)
5108 * fixed a bug in computing method discriminating functions: It is
5109 now possible to define methods specialized on classes which have
5110 forward-referenced superclasses. (thanks to Gerd Moellmann)
5111 * fixed evaluation order in optional entries (reported by Gilbert
5113 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
5114 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
5115 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
5116 required-by-AMOP NAME argument, as well as CLASS and
5117 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
5118 * fixed bug 20: DEFMETHOD can define methods using names that are
5119 not the proper names of classes to designate class specializers.
5120 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
5121 Unix file descriptors, instead of blowing up. (thanks to Antonio
5123 * Garbage collection refactoring: user-visible change is that a
5124 call to the GC function during WITHOUT-GCING will not do garbage
5125 collection until the end of the WITHOUT-GCING. If you were doing
5126 this you were probably losing anyway.
5127 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
5128 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
5129 TYPEP the latter but not the former.
5130 * The compiler issues a full WARNING for calls to undefined functions
5131 with names from the CL package.
5132 * MAP-INTO for a vector destination is open coded. (reported by
5133 Brian Downing on c.l.l)
5134 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
5135 documentation string.
5136 * fixed some bugs revealed by Paul Dietz' test suite:
5137 ** COPY-ALIST now signals an error if its argument is a dotted
5139 ** Condition slots are now accessed more correctly in the presence
5140 of multiple initargs for a given slot.
5141 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
5142 exclude restarts of the same name associated with a different
5144 ** DEFCLASS of forward-referenced classes with another
5145 forward-referenced class in the superclasses list no longer
5147 ** Condition slots are now initialized once each, not multiple
5148 times. (thanks to Gerd Moellmann)
5149 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
5151 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
5152 ** NSET-EXCLUSIVE-OR does not return extra elements when its
5153 arguments contain duplicated elements.
5154 ** RESTART-CASE understands local macros.
5155 ** RESTART-CASE associates exactly its own restarts with a condition.
5156 ** ENDP in safe mode checks its argument to be of type LIST.
5157 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
5158 in question is unbound.
5159 ** Optimized MAKE-INSTANCE functions no longer cause internal
5160 assertion failures in the presence of duplicate initargs.
5161 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
5162 ** Side-effectful :DEFAULT-INITARGS have their side-effects
5163 propagated even in the ctor optimized implementation of
5165 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
5167 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
5168 * a better implementation of SXHASH on (simple) bit vectors,
5169 measured both in execution speed and in distribution of results
5170 over the positive fixnums, has been installed. Likewise, a better
5171 implementation of EQUAL for simple bit vectors is now available.
5172 * fixed CEILING optimization for a divisor of form 2^k.
5173 * fixed bug 240 (emitting extra style warnings "using the lexical
5174 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
5175 by Antonio Martinez)
5176 * fixed SXHASH, giving different results for NIL depending on type
5177 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
5178 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
5179 variable. (found by Rolf Wester)
5180 * SBCL does not ignore type declarations for special
5181 variables. (reported by rif on c.l.l 2003-03-05)
5182 * some bug fixes in contrib/sb-aclrepl/
5183 * fixed some bugs revealed by Paul Dietz' test suite:
5184 ** a bug in the CONS type specifier, whereby the CAR and CDR
5185 types got intertwined, has been fixed;
5186 ** the type system is now able to reason about the interaction
5187 between INTEGER and RATIO types more completely;
5188 ** APPEND, [N]REVERSE and NRECONC check that those their
5189 arguments, which must be proper lists, are really so;
5190 ** An array specialized to be unable to hold elements has been
5191 implemented, as required -- yes, really -- by ANSI;
5192 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
5193 on malformed property lists;
5195 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
5196 * incompatible packaging change: in line with Unix convention,
5197 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
5198 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
5199 * REQUIRE and PROVIDE are now optionally capable of doing something
5200 useful. See the documentation string for REQUIRE.
5201 * infrastructure for a managed SBCL contrib system: contributed
5202 modules in this release include:
5203 ** the ASDF system definition facility;
5204 ** an interface to the BSD Sockets API;
5205 ** an ACL-like convenience interface to the repl;
5206 (thanks to Kevin Rosenberg)
5207 ** an implementation of ROTATE-BYTE, with efficient implementation
5209 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
5210 gives a closer approximation to the right answer than previously.
5211 (thanks to Raymond Toy)
5212 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
5213 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
5214 optional environment arguments, as required by ANSI.
5215 * fixed bugs in other functions taking environment objects, allowing
5216 calls with an explicit NIL environment argument to be compiled
5218 * fixed bug 228: primary return values from
5219 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
5220 COMPILE or FUNCTION.
5221 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
5222 :TYPE will no longer signal errors on innocuous objects.
5223 * fixed bug 231b: SETQ is better at respecting type declarations in
5224 the lexical environment.
5225 * fixed a bug in DEFCLASS: classes named by symbols with no or
5226 unprintable packages can now be defined.
5227 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
5228 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
5229 * fixed compiler failure related to checking types of functions.
5230 (reported by Robert E. Brown)
5231 * the compiler is now much more consistent in its error-checking
5232 treatment of bounding index arguments to sequence functions: in
5233 (SAFETY 3) code, errors will be signalled in almost all cases if
5234 invalid sequence bounding indices are passed to functions defined
5235 by ANSI to operate on sequences.
5236 * fixed a bug in the build procedure: documentation of SBCL-specific
5237 packages is now preserved and available in the final Lisp image.
5238 * lifted FDEFINITION lookup out of loops in the implementation of
5239 many list operations. (thanks to Robert E. Brown)
5240 * fixed a bug in the reader: the #n# reader macro now works for
5241 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5242 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5243 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5244 E. Brown and Tony Martinez respectively)
5245 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5246 SLOT-BOUNDP: in particular, it is now able to optimize them much
5247 better, and is now not vulnerable to having packages renamed.
5248 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5249 always called when a slot is not present in an instance. (thanks
5251 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5252 longer signal an error on unreading a character following EOF on
5253 the previous constituent stream. (thanks to Tony Martinez)
5254 * fixed some bugs revealed by Paul Dietz' test suite:
5255 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5256 not just nonnegative fixnums;
5257 ** the logical bit-array operators such as BIT-AND now accept an
5258 explicit NIL for their "opt-arg" argument (to indicate a
5259 freshly-consed result bit-array);
5260 ** ELT now signals an error on an invalid sequence index in safe
5262 ** the type system is now cleverer about negations of numeric
5263 types, and consequently understands the BIGNUM and RATIO types
5265 ** the type system is now cleverer about the interaction between
5266 INTEGER and RATIO types: while bugs still remain, many more
5267 cases are accurately computed;
5268 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5269 if it is in the last clause;
5270 ** CONSTANTLY now correctly returns a side-effect-free function in
5272 ** DECLARE is no longer treated as a special-operator; in
5273 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5274 * incremented fasl file version number due to the change in the
5275 DEFSTRUCT-SLOT-DESCRIPTION structure.
5277 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5278 * minor incompatible change: code processed by the "interpreter" or
5279 EVAL now has a compilation optimization policy of (DEBUG 2)
5280 (changed from (DEBUG 1)) to improve debuggability of interactive
5281 development, and to allow the use of the debug RETURN command in
5283 * an experimental implementation of the RETURN command for the
5284 debugger has been included. (thanks to Frederik Kuivinen)
5285 * fixed bug 62: constraints were not propagated into a loop.
5286 * fixed bug in embedded calls of SORT (reported and investigated by
5288 * fixed some bugs revealed by Paul Dietz' test suite:
5289 ** printing and reading of arrays with some dimensions having
5290 length 0 (thanks to Gerd Moellmann);
5291 ** BOA constructor with &AUX argument without a default value does
5292 not cause a type error;
5293 ** CONSTANTP now returns true for all self-evaluating objects.
5295 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5296 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5297 accessors that are related by inheritance, as specified in the
5298 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5299 Valtteri Vuorikoski)
5300 * The compiler is now able to inline functions that were defined in
5301 a complex lexical environment (e.g. inside a MACROLET).
5302 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5304 * Support for the upcoming FreeBSD-5.0 release has been included.
5305 (thanks to Dag-Erling Smorgrav)
5306 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5307 effect when it is not in a toplevel context.
5308 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5309 stand a better chance of being correct. (thanks to Gerd
5311 * fixed bug in COERCE, which now signals an error on coercing a
5312 rational to a bounded real type which excludes the expected
5314 * The compiler is now able to derive types more accurately from the
5315 COERCE and COMPILE functions.
5316 * fixed bug 223: functional binding is considered to be constant
5317 only for symbols in the CL package.
5318 * fixed bug 231: SETQ did not check the type of a variable being set
5319 (reported by Robert E. Brown)
5320 * A new optimization for MAKE-INSTANCE has been included, fixing
5321 various bugs (including relating to :ALLOCATION :CLASS slots and
5322 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5324 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5325 ** As required by ANSI, LOOP now disallows anonymous collection
5326 clauses such as COLLECT I in conjunction with aggregate boolean
5327 clauses such as THEREIS (= I 1);
5328 ** LOOP now signals an error when any variable is reused in the
5329 same loop (including the potentially useful construct analogous
5330 to WITH A = 1 WITH A = (1+ A);
5331 ** IT is only a special loop symbol within the first clause of a
5332 conditional loop clause;
5333 ** LOOP with a typed iteration variable over a hashtable now
5334 signals a type error iff it should.
5335 * fixed some other bugs revealed by Paul Dietz' test suite:
5336 ** FILE-STREAM now names the class previously known as FD-STREAM;
5337 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5338 argument) no longer signals an error;
5339 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5340 of the slot symbol, rather than using the current package
5341 ((:CONC-NAME "") continues to intern the slot's name in the
5343 * incremented fasl file version number, because of the incompatible
5344 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5345 of the new implementation of DEFINE-COMPILER-MACRO.
5347 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5348 * Support for building SBCL for MIPS platforms running in
5349 little-endian mode has now been checked in, and basic
5350 functionality on said platforms verified.
5351 * minor incompatible change: PCL now records the pathname of a file
5352 in which methods and the like are defined, rather than its
5354 * minor incompatible change: TRUENAME now considers the truename of
5355 a file naming a directory to be the pathname with :DIRECTORY
5356 component indicating that directory.
5357 * minor incompatible change: a NAMED clause in the extended form of
5358 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5359 reason for the previous behaviour is unclear.
5360 * more systematization and improvement of CLOS and MOP conformance
5361 in PCL (thanks to Gerd Moellman and Pierre Mai):
5362 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5364 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5365 primary methods with no specializers;
5366 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5368 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5369 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5370 FORWARD-REFERENCED-CLASSes; error reporting on
5371 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5373 ** SXHASH on CLOS instances now uses a slot internal to the
5374 instance to return different numbers on distinct instances,
5375 while preserving the same return value through invocations of
5377 ** DEFMETHOD signals errors when methods with longer incongruent
5378 lambda lists are added to generic functions;
5379 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5380 CLASS, as specified in AMOP;
5381 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5382 on the order returned by the primary method for classes of
5383 class STANDARD-CLASS;
5384 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5385 * fixed some bugs shown by Paul Dietz' test suite:
5386 ** DOLIST puts its body in TAGBODY;
5387 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5389 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5390 value producing form;
5391 ** if more variables are given to PROGV than values, extra
5392 variables are bound and made to have no value;
5393 ** NSUBSTITUTE on list arguments gets the right answer with
5395 ** ELT signals an error of type TYPE-ERROR when the index argument
5396 is not a valid sequence index;
5397 ** LOOP signals (at macroexpansion time) an error of type
5398 PROGRAM-ERROR when duplicate variable names are found;
5399 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5400 ** FUNCALL of special-operators now cause an error of type
5402 ** PSETQ now works as required in the presence of side-effecting
5403 symbol-macro places;
5404 ** NCONC accepts any object as its last argument;
5405 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5407 ** loop-for-as-package does not require a package to be explicitely
5409 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5411 * fixed bug 166: compiler preserves "there is a way to go"
5412 invariant when deleting code.
5413 * fixed bug 172: macro lambda lists with required arguments after
5414 &REST arguments now cause an error to be signalled. (thanks to
5416 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5417 bug. (thanks to Matthew Danish)
5418 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5420 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5421 arguments are lexically rebound. (thanks to Gerd Moellmann and
5423 * fixed bug 194: error messages are now more informative when there
5424 is no primary method applicable in a call to a generic
5425 function. (thanks to Gerd Moellmann)
5426 * fixed bug in command line argument checking (thanks to Julian
5428 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5429 (thanks to Matthew Danish)
5430 * incremented fasl file version number, because of the
5431 SXHASH-related changes in the layout of CLOS data structures
5433 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5434 * minor incompatible change: The runtime (the Unix executable named
5435 "sbcl") is now much pickier about the .core files it will load.
5436 Essentially it now requires .core files to descend from the same
5437 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5438 as the runtime does. (The intent is to prevent the crashes which
5439 can occur, and which can even be reported as mysterious failures,
5440 when people patch the sources or change the build parameters
5441 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5442 sbcl and .core files.)
5443 * fixed bug: VALUES-LIST is no longer optimized away.
5444 * fixed bug 142: The FFI conversion of C string values to Lisp
5445 string values no longer conses excessively. (thanks to Nathan
5446 Froyd porting Raymond Toy's fix to CMU CL)
5447 * began to systematize and improve MOP conformance in PCL (thanks to
5448 Nathan Froyd, Gerd Moellman and Pierre Mai):
5449 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5451 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5452 ** FINALIZE-INHERITANCE is now called on class finalization;
5453 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5454 argument precedence order.
5455 * fixed bug 202: The compiler no longer fails on functions whose
5456 derived types contradict their declared type.
5457 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5458 so it can be non-toplevel.
5459 * The fasl file version number has changed (because of the new
5460 implementation of DEFMACRO).
5461 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5462 safe code, that any length requirement by their type-specifier
5463 argument is valid. The exceptions to this are described in bug
5465 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5466 functions now check the types of their inputs as required by ANSI.
5467 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5468 introduced symbol is DECLAREd to be SPECIAL.
5469 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5470 * fixed bug: :COUNT argument to sequence functions may be negative
5471 * fixed bug: body of DO-SYMBOLS may contain declarations
5472 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5473 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5474 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5475 symbol macro only once
5476 * fixed printing of call frame when argument list is unavailable
5477 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5478 * compiler no longer signals WARNING on unknown keyword
5481 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5482 * A beta-quality port to the mips architecture running Linux,
5483 based on the old CMUCL backend, has been made. It has been tested
5484 on a big-endian kernel, and works sufficiently well to be able to
5485 rebuild itself; it has not been tested in little-endian mode.
5486 * fixed an inconsistency between gencgc.c and purify.c which made
5487 dumping/loading .core files unreliable
5488 * fixed bug 120a: The compiler now deals correctly with IFs where
5489 the consequent is the same as the alternative, instead of
5490 misderiving the return type. (thanks to Alexey Dejneka)
5491 * fixed bug 113: Logical pathnames are now dumpable (the logical
5492 host is resolved at load-time, throwing an error if it is not
5494 * fixed bug 174: FORMAT's error message is slightly clearer when a
5495 non-printing character is used in a format directive.
5496 * fixed several bugs in compiler checking of type declarations, i.e.
5497 violations of the Python "declarations are assertions" principle
5498 (thanks to Alexey Dejneka)
5499 * fixed several bugs in PCL's error checking (thanks to Gerd
5501 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5503 * fixed bug in compilation of functions as first class values
5504 (thanks to Antonio Martinez-Shotton)
5505 * The compiler's handling TYPE-ERRORs which it can prove will
5506 inevitably happen at runtime has been cleaned up and corrected
5507 in several ways. (thanks to Alexey Dejneka)
5508 * improved argument type checking for various basic arithmetic
5509 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5510 lavished on them in the past that they can be compiled in many
5511 ways in different special cases
5512 * fixed bug 181: compiler checks validity of user supplied type
5514 * cleaned up code flushing in optimization: Function calls which
5515 should signal errors for safety purposes (e.g. which ANSI says
5516 should signal errors when their arguments are of incorrect type)
5517 are no longer optimized away.
5518 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5519 * incremented fasl file version number, because changes in the
5520 implementation of sequence functions like COERCE caused
5521 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5522 in old inline expansions) to become undefined. (Actually these
5523 changes were later undone, so we might very well be binary
5524 compatible with 0.7.7 after all, but leaving the version number
5525 incremented seemed like the simplest and most conservative
5528 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5529 * An alpha-quality port to the parisc architecture running Linux,
5530 based on the old CMUCL backend, has been made. This, even more so
5531 than the other backends, should be considered still a work in
5532 progress; known problems include that the Linux kernel in 64-bit
5533 mode does not propagate the correct sigcontext structure to
5534 userspace, and consequently SBCL on a parisc64 kernel will not
5536 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5537 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5538 suppressed.) Also now that the compiler is looking at declarations
5539 in the environment, it checks optimization declarations as well,
5540 and suppresses inlining when (> DEBUG SPEED).
5541 * More fixes have been made to treatment of floating point exception
5542 treatment and other Unix signals. In particular, floating point
5543 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5544 * The detection and handling of control stack exhaustion (infinite
5545 or very deeply nested recursion) has changed. Stack exhaustion
5546 detection is now done by write-protecting pages at the OS level
5547 and applies at all optimization settings; when found, a
5548 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5549 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5550 be caught using IGNORE-ERRORS.
5551 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5552 correctly when transforming recursive LABELS functions to LETs.
5553 (thanks to Alexey Dejneka)
5554 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5555 that are names of constants or global variables.
5556 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5557 alien routines with docstrings.
5558 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5559 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5561 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5562 (thanks to Eric Marsden)
5563 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5564 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5565 * Bug fix: The SPARC backend can now compile functions involving
5566 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5567 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5568 to a functions expecting a PATHNAME-DESIGNATOR.
5569 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5570 lambda lists. (thanks to Alexey Dejneka)
5571 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5572 functions so that EXPORTing the name of the class doesn't cause
5573 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5574 to Antonio Martinez for reporting this)
5575 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5576 constant-folded without failing an assertion. (thanks to Einar
5577 Floystad Dorum for reporting this)
5578 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5579 types are now dealt with more correctly by the compiler.
5580 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5581 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5582 behaviour analogous to RENAME-FILE. This puts its behaviour more
5583 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5585 * The fasl file version number has changed again. (because of the
5586 bug fix involving the names of PCL MAKE-INSTANCE functions)
5588 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5589 * bug fix: Floating point exceptions are treated much more
5590 consistently on the x86/Linux and PPC/Linux platforms.
5591 * Array initialization with :INITIAL-ELEMENT is now much faster for
5592 cases when the compiler cannot open code the array creation, but
5593 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5594 array accesses have also seen a speed increase.
5595 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5596 specified. (This was at the root of some bad interactions between
5597 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5599 * bug fix: Internal error arguments for undefined functions are now
5600 computed correctly on the PPC/Linux platform.
5601 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5602 Raymond Toy's patch for CMU CL)
5603 * Support for the Solaris 9 operating environment has been included
5604 (thanks to Daniel Merritt)
5605 * A very ugly but hopefully complete draft of the missing FFI chapter
5606 of the manual has been created by reformatting the corresponding
5607 CMU CL manual chapter into (currently very ugly and incoherent)
5608 DocBook and bringing it up to date for SBCL behavior. Thus, the
5609 manual is now essentially complete, at least by my extreme
5610 once-and-only-once standards, whereby it's acceptable to refer to
5611 the doc strings of SB-EXT functions as the primary documentation.
5612 * The fasl file version number has changed again, due to cleanup of
5613 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5614 is no longer a static symbol.)
5616 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5617 * SBCL now builds with OpenMCL (version 0.12) as the
5618 cross-compilation host; also, more progress has been made toward
5619 bootstrapping under CLISP.
5620 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5622 * bug 158 fixed: The compiler can now deal with integer loop
5623 increments different from 1; fixing this turned out also to fix
5625 * bug 169 fixed: no more bogus warnings about using lexical bindings
5626 despite the presence of perfectly good SPECIAL declarations (thanks
5627 to David Lichteblau)
5628 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5629 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5630 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5632 * bug 180 fixed: Method combination specifications no longer ignore
5633 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5634 * bug fix: Structure type predicate functions now check their argument
5635 count as they should.
5636 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5637 correctly. (thanks to Pierre Mai)
5638 * minor incompatible change: The --noprogrammer option is deprecated
5639 in favor of the new --disable-debugger option, which is very similar.
5640 (The major difference is that it takes effect at a slightly different
5641 time at startup, causing handling of errors in --sysinit and
5642 --userinit files will be affected differently.) The
5643 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5644 been added to allow this functionality to be controlled from ordinary
5645 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5646 maintainers, who might want to run non-interactive scripts to
5647 build SBCL cores which will later be used interactively.)
5648 * minor incompatible change: The LOAD function no longer, when given
5649 a wild pathname to load, loads all files matching that pathname.
5650 Instead, an error of type FILE-ERROR is signalled.
5652 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5653 * bug 147 fixed: The compiler preserves its block link/count
5654 invariants more correctly now so that it doesn't crash. (thanks
5656 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5658 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5659 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5660 no-value-for-this-character as NIL (as specified by ANSI).
5661 * HOST-NAMESTRING on physical pathnames now returns a string that is
5662 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5663 (thanks to Christophe Rhodes)
5664 * The Alpha port handles icache flushing more correctly. (thanks to
5666 * More progress has been made toward bootstrapping under CLISP. (thanks
5667 to Christophe Rhodes)
5668 * The fasl file format has changed again, because dynamic loading
5669 on OpenBSD (which has non-ELF object files) motivated some cleanups
5670 in the way that foreign symbols are transformed and passed around.
5671 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5672 is no longer treated as whitespace by the reader, but instead as
5673 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5674 |A
\7fB|, instead of A as it used to.
5676 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5677 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5678 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5679 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5680 this as of 0.7.1.45, but was left out of the previous news section
5681 (thanks to Dan Barlow)
5682 * SBCL now runs on the Solaris operating system on SPARC architectures
5683 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5684 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5685 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5686 * SPARC backend cleanups, allowing builds of cores optimized for V8
5687 and V9 SPARCS, and also emission of code targeted to a particular
5688 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5690 * SBCL is closer to bootstrapping under CLISP, thanks to various
5691 fixes by Christophe Rhodes.
5692 * The fasl file format has changed again, to allow the compiler's
5693 INFO database to support symbol macros.
5694 * The user manual (in doc/) is formatted into HTML more nicely.
5695 (thanks to coreythomas)
5696 * The system is smarter about SUBTYPEP relationships, especially
5697 those involving NOT types (including types such as ATOM which are
5698 represented internally using NOT types). Thus SUBTYPEP is less
5699 likely to return (VALUES NIL NIL) in general, and in particular
5700 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5702 * The fasl file format has changed again, because the internal
5703 representation of types now includes a new slot to support the new
5704 SUBTYPEP-of-NOT-types logic.
5705 * (not a change in the main branch of SBCL, but a related prototype
5706 which can hopefully be merged into the main branch of SBCL in the
5707 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5708 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5709 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5710 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5711 dispatch macro character combinations. (thanks to Alexey Dejneka)
5712 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5713 that superficially look like logical namestrings correctly.
5714 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5716 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5717 default supplied-p) for &optional and &key arguments. (thanks to
5720 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5721 * incompatible change: The compiler is now less aggressive about
5722 tail call optimization, doing it only when (> SPACE DEBUG) or
5723 (> SPEED DEBUG). (This is an incompatible change because there are
5724 programs which relied on the old CMU-CL-style behavior to optimize
5725 away their unbounded recursion which will now die of stack overflow.)
5726 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5727 for non-GENCGC systems has been increased to 20M (since that
5728 seems much closer to the likely performance optimum for modern
5729 systems than the old 4M value was)
5730 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5731 and *DEBUG-PRINT-LEVEL*
5732 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5733 of CMU CL's support for SPARC, and various endianness and other
5734 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5735 * new syntactic sugar for the Unix command line: --load foo.bar is now
5736 an alternate notation for --eval '(load "foo.bar")'.
5738 ** The system now detects stack overflow and handles it gracefully,
5739 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5740 optimization settings. (This is a good thing in general, and
5741 its introduction in this version should be particularly timely
5742 for anyone whose code fails because of suppression of tail
5744 ** The system now hunts for the C variable "environ" in a more
5745 devious way, to avoid segfaults when the C library version differs
5746 between compile time and run time. (thanks to Christophe Rhodes)
5747 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5748 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5749 ** The compiler no longer issues bogus style warnings for undefined
5750 classes in the same source file as the DEFCLASSes which defined
5751 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5753 ** fixes in CONDITION class precedence list for undefined function
5754 errors (thanks to Alexei Dejneka)
5755 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5756 correctly. (thanks to Dan Barlow)
5757 ** portability fixes aiming at bootstrapping under CLISP (thanks
5758 to Dave McDonald and Christophe Rhodes)
5759 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5760 ** fixes in type translation and and type inference (thanks to
5762 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5763 ** various fixes in the new ports (thanks to Dan Barlow)
5764 * several changes related to debugging:
5765 ** suppression of tail recursion, as noted above
5766 ** stack overflow detection, as noted above
5767 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5768 is now the default. (For some time encapsulation has been more
5769 reliable than the breakpoint-based :ENCAPSULATE NIL
5770 implementation, at least on X86 systems; and I just noticed that
5771 encapsulation also seems closer to the spirit of the ANSI
5774 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5776 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5777 up properly again. (There was a packaging bug in 0.7.0 which
5778 left their definitions in SB-SYS::LOAD-FOREIGN and
5779 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5780 vital for most things which interface to C-level interfaces,
5781 like extensions working with sockets or databases or
5782 Perl-compatible regexes or whatever, and the need to fix
5783 this bug is the main reason that 0.7.1 was released so
5785 ** DEFGENERIC is now choosier about the methods it redefines, so that
5786 reLOADing a previously-LOADed file containing DEFGENERICs does
5787 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5788 cycle now works as it should. (thanks to Alexey Dejneka)
5789 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5790 fixed by Christophe Rhodes. (He actually submitted this patch
5791 months ago, and I delayed until after 0.7.0.)
5792 ** Bug 111 (internal compiler confusion about runtime checks on
5793 FUNCTION types) was fixed by Alexey Dejneka.
5794 * Some internal cleanups (getting rid of variables which aren't
5795 needed now that the byte interpreter is gone) caused the fasl
5796 file format number to change again.
5798 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5799 * major incompatible change: The default fasl file extension, i.e. the
5800 default extension for files produced by COMPILE-FILE, has changed
5801 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5803 ** There are many changes in the implementation of the compiler.
5804 SBCL is now essentially a compiler-only implementation of ANSI
5805 Common Lisp. EVAL still "interprets" a few special cases, but
5806 almost all the interesting cases are handled by creating
5807 a LAMBDA expression, calling COMPILE on it, then calling
5808 FUNCALL on the result.
5809 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5810 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5811 Since the code is newer, there might still be some new bugs
5812 (though not as many as before Martin Atzmueller's fixes:-). But
5813 the new code is substantially simpler and clearer, and hopefully
5814 any remaining bugs will be simpler, less fundamental, and more
5815 fixable then the bugs in the old code.
5816 ** The revised compiler is still a little unsteady on its feet.
5818 *** The debugging information it produces (particularly the names
5819 of FUNCTION objects) is sometimes much less useful than what
5820 the old compiler produced.
5821 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5822 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5823 within a MACROLET) has been temporarily weakened.
5824 ** There are new compiler optimizations for various functions:
5825 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5826 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5827 *** the math functions TRUNCATE, FLOOR, and CEILING
5828 *** the function-of-all-trades COERCE
5829 Mostly these should be transparent, but there's one
5830 potentially-annoying problem (bug 117): when the compiler
5831 inline-expands a function and does type analysis on the result,
5832 it can create control paths which have type mismatches, and
5833 when it can't prove that those control paths aren't taken,
5834 it will issue WARNINGs about the type mismatches. This is
5835 a particular problem in practice for the new sequence functions.
5836 It's not clear how this should be fixed, and for now, a
5837 workaround is given in the entry for 117 in the BUGS file.
5838 ** (Because of the interaction between the two previous items --
5839 occasional inlining problems and new inline expansions -- some
5840 of the new sequence function optimizations won't really kick in
5841 completely until debugging information, and then inlining, are
5842 straightened out in some future version.)
5843 * minor incompatible changes:
5844 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5845 DIRECTORY no longer implicitly promotes NIL slots of its
5846 pathname argument to :WILD. In particular, when you ask for the
5847 contents of a directory (which you used to be able to do without
5848 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5849 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5850 ** changes in behavior that ANSI explicitly defines to be
5851 implementation dependent:
5852 *** The new compiler-only implementation still conforms with ANSI,
5853 but acts a little different than before. Besides the obvious
5854 changes in performance tradeoffs (that the cost per form passed
5855 to EVAL has gone up, and the cost per form executed by EVAL
5856 has gone down), the behavior of the system changes a little
5857 because there are no longer any interpreted function objects.
5858 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5859 e.g. doing COMPILE on the output of interactive DEFUN is
5861 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5863 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5864 has changed from (:CL) to NIL.
5865 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5866 e.g. #\Newline and #\Tab, don't have names specified in the
5867 ANSI Common Lisp standard, is now based on their ASCII symbolic
5868 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5869 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5870 are no longer used for output.
5871 ** changes in internal implementation constants:
5872 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5873 4 million. (If your application spends a lot of time GCing and
5874 you have a lot of RAM, you might want to experiment with
5875 increasing it even more.)
5876 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5877 However, almost all old code should still continue to work without
5878 immediate update, as SB-C-CALL is now a (deprecated) nickname
5880 ** Old operator names in the style DEF-FOO are now deprecated in
5881 favor of new corresponding names DEFINE-FOO, for consistency with
5882 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5883 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5884 internal symbols, but a few supported extensions like
5885 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5886 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5887 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5888 etc. as you get deeper into recursive calls to the debugger
5889 command loop, instead of the old "5]", "5]]", "5]]]"
5890 sequence. (I was motivated to do this when squabbles between
5891 ILISP and SBCL left me very deeply nested in the debugger. In the
5892 short term, this change will probably provoke more ILISP/SBCL
5893 squabbles, but hopefully it will be an improvement in the long run.)
5894 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5895 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5896 function, since declaiming return types involving aliens is
5897 (1) annoyingly messy to do by hand and (2) vital to efficient
5898 compilation of code which calls such functions.
5899 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5900 longer reexported by the SB-EXT package. They're solely useful
5901 for alien code, so it seems more logical that you should get
5902 them from the SB-ALIEN package, not in SB-EXT.
5903 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5904 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5905 features. Instead, the code that they used to control is always
5906 built into the system.
5907 * many other bug fixes
5908 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5909 advantage of the new EVAL-WHEN stuff and to clean them up in
5910 general, and they are now more ANSI-compliant in a number of
5911 ways. Martin Atzmueller is responsible for a lot of this.
5912 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5914 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5915 *** correct ERROR type for various file operations
5916 *** some fixes for Lisp streams
5917 *** DEFMETHOD syntax checking
5918 *** changing old weird representation of debug information as
5919 strings (which, among their other deficiencies, don't transform
5920 correctly when you rename packages, and don't change their
5921 print representation when you change things like *PACKAGE*
5922 and *PRINT-LENGTH*) to symbols and lists of symbols
5923 He also made several improvements and fixed several bugs in DESCRIBE.
5924 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5926 *** misbehavior of WRITE-STRING/WRITE-LINE
5927 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5928 and several other LOOP problems as well
5929 *** DIRECTORY when similar filenames are present
5930 *** DEFGENERIC with :METHOD options
5931 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5932 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5933 *** argument ordering in FIND with :TEST option
5934 *** mishandled package designator argument in APROPOS-LIST
5935 *** various problems in the backquote readmacro
5936 *** a bug in APROPOS
5937 *** probably some others that I'm not describing very well here,
5938 since the CVS log documents them by reference to sbcl-devel
5939 messages, and the SourceForge archives aren't working well.:-(
5940 ** Dan Barlow improved the Alpha port (and is making progress on the
5941 PPC port, for those of you who think different).
5942 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5943 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5944 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5945 continues to work on the SPARC port (for those of you in a position
5946 to look down upon our little PC-compatible boxes from a great height).
5947 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5948 and uses that copy, rather than the current dynamic value, when
5949 it's trying to decide whether to truncate output. Thus e.g.
5950 (let ((*print-lines* 50))
5951 (pprint-logical-block (stream nil)
5953 (let ((*print-lines* 8))
5954 (print (aref possiblybigthings i) stream)))))
5955 should now truncate the logical block only at 50 lines, instead of
5956 often truncating it at 8 lines, as it did before.
5957 * The doc/cmucl/ directory, containing old CMU CL documentation
5958 from the time of the fork, is no longer part of the base system.
5959 SourceForge has shut down its anonymous FTP service, and with it
5960 my original plan for distributing the old CMU CL documentation
5961 there. For now, if you need these files you can download an old
5962 SBCL source release and extract them from it.
5963 * The fasl file version number changed again, for dozens of reasons,
5964 some of which are apparent above.
5966 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5967 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5968 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5969 patch, so that DISASSEMBLE output is much nicer.
5970 * The code in the SB-PROFILE package now seems reasonably stable.
5971 I still haven't decided what the final interface should look like
5972 (I'd like PROFILE to interact cleanly with TRACE, since both
5973 facilities use function encapsulation) but if you have a need
5974 for profiling now, you can probably use it successfully with
5975 the current CMU-CL-style interface.
5976 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5977 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5978 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5979 link now returns the dangling link itself, and for similar
5980 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5981 link itself. (In these cases the old code signalled an error and
5982 looped endlessly, respectively.) Thus, DIRECTORY now works even
5983 in the presence of dangling and cyclic symbolic links.
5984 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5985 is now a supported extension again, since the consensus on
5986 sbcl-devel was that it can be useful for ordinary development
5987 work, not just for debugging SBCL itself.
5988 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5989 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5990 that currently-defined functions might be redefined later with
5991 different return types.
5992 * Hash tables can be printed readably, as inspired by CMU CL code
5993 of Eric Marsden and SBCL code of Martin Atzmueller.
5994 * better error handling in CLOS method combination, thanks to
5995 Martin Atzmueller porting Pierre Mai's CMU CL patches
5996 * more overflow fixes for >16Mbyte I/O buffers
5997 * A bug in READ has been fixed, so that now a single Ctrl-D
5998 character suffices to cause end-of-file on character streams.
5999 In particular, now you only need one Ctrl-D at the command
6000 line (not two) to exit SBCL.
6001 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
6003 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
6004 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
6005 does the right thing.
6006 * The implementation of some type tests, especially for CONDITION
6007 types, is now tidier and maybe faster, due to CMU CL code
6008 originally by Douglas Crosher, ported by Martin Atzmueller.
6009 * Some math functions have been fixed, and there are new
6010 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
6011 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
6012 * (There are also some new optimizers in contrib/*-extras.lisp. Those
6013 aren't built into sbcl-0.6.13, but are a sneak preview of what's
6014 likely to be built into sbcl-0.7.0.)
6015 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
6016 CL, ported to SBCL by Martin Atzmueller)
6017 * DESCRIBE now gives more information in some cases. (Pierre Mai's
6018 patch to CMU CL, ported to SBCL by Martin Atzmueller)
6019 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
6020 * There's a new slam.sh hack to shorten the edit/compile/debug
6021 cycle for low-level changes to SBCL itself, and a new
6022 :SB-AFTER-XC-CORE target feature to control the generation of
6023 the after-xc.core file needed by slam.sh.
6024 * minor incompatible change: The ENTRY-POINTS &KEY argument to
6025 COMPILE-FILE is no longer supported, so that now every function
6026 gets an entry point, so that block compilation looks a little
6027 more like the plain vanilla ANSI section 3.2.2.3 scheme.
6028 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
6029 returns the number of bytes consed since the system started,
6030 rather than the number consed since the first time the function
6031 was called. (The new definition parallels ANSI functions like
6032 CL:GET-INTERNAL-RUN-TIME.)
6033 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
6034 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
6035 supported. Now DIRECTORY always does the abstract Common-Lisp-y
6036 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
6037 * Fasl file version numbers are now independent of the target CPU,
6038 since historically most system changes which required version
6039 number changes have affected all CPUs equally. Similarly,
6040 the byte fasl file version is now equal to the ordinary
6043 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
6044 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
6045 is no longer recognized. I apologize for this, because it was
6046 listed in SB-EXT as a supported extension, but I found that
6047 its existing behavior was poorly specified, as well as incorrectly
6048 specified, and it looked like too much of a mess to straighten it
6049 out. I have enough on my hands trying to get ANSI stuff to work..
6050 * many patches ported from CMU CL by Martin Atzmueller, with
6051 half a dozen bug fixes in pretty-printing and the debugger, and
6052 half a dozen others elsewhere
6053 * fixed bug 13: Floating point infinities are now supported again.
6054 They might still be a little bit flaky, but thanks to bug reports
6055 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
6056 as flaky as they were.
6057 * The --noprogrammer command line option is now supported. (Its
6058 behavior is slightly different in detail from what the old man
6059 page claimed it would do, but it's still appropriate under the
6060 same circumstances that the man page talks about.)
6061 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
6062 are now supported, and enabled by default. Thus, the compiler can
6063 handle many floating point and complex operations much less
6064 inefficiently. (Thus e.g. you can implement a complex FFT
6066 * The compiler now detects type mismatches between DECLAIM FTYPE
6067 and DEFUN better, and implements CHECK-TYPE more correctly, and
6068 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
6069 thanks to patches from Martin Atzmueller.
6070 * various fixes to make the cross-compiler more portable to
6071 ANSI-conforming-but-different cross-compilation hosts (notably
6072 Lispworks for Windows, following bug reports from Arthur Lemmens)
6073 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
6074 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
6075 fixed thanks to Pierre Mai's CMU CL patches.
6076 * fixes to keep the system from overflowing internal counters when
6077 it tries to use i/o buffers larger than 16M bytes
6078 * fixed bug 45a: Various internal functions required to support
6079 complex special functions have been merged from CMU CL sources.
6080 (When I was first setting up SBCL, I misunderstood a compile-time
6081 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
6082 * improved support for type intersection and union, fixing bug 12
6083 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
6084 more obscure bugs as well
6085 * some steps toward byte-compiling non-performance-critical
6086 parts of the system, courtesy of patches from Martin Atzmueller
6087 * Christophe Rhodes has made some debian packages of sbcl at
6088 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
6089 From his sbcl-devel e-mail of 2001-04-08 they're not completely
6090 stable, but are nonetheless usable. When he's ready, I'd be happy
6091 to add them to the SourceForge "File Releases" section. (And if
6092 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
6093 * new fasl file format version number (because of changes in
6094 internal representation of (OR ..) types to accommodate the new
6095 support for (AND ..) types, among other things)
6097 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
6098 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
6100 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
6102 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
6103 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
6104 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
6105 * DESCRIBE now works on structure objects again.
6106 * Most function call argument type mismatches are now handled as
6107 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
6108 know whether the function will be redefined before the call is
6109 executed. (The compiler could flag local calls with full WARNINGs,
6110 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
6111 it doesn't keep track of enough information to know whether calls
6112 are local in this sense.)
6113 * Compiler output is now more verbose, with messages truncated
6114 later than before. (There should be some supported way for users
6115 to override the default verbosity, but I haven't decided how to
6116 provide it yet, so this behavior is still controlled by the internal
6117 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
6118 src/compiler/ir1util.lisp.)
6119 * Fasl file format version numbers have increased again, because
6120 support for the Gray streams extension changes the layout of the
6121 system's STREAM objects.
6122 * The Gray subclassable streams extension now works, thanks to a
6123 patch from Martin Atzmueller.
6124 * The full LOAD-FOREIGN extension (not just the primitive
6125 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
6126 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
6127 but like most other programs, it defaults to copying the Unix
6128 environment from the original process instead of starting the
6129 new process in an empty environment.
6130 * Extensions which manipulate the Unix environment now support
6131 an :ENVIRONMENT keyword option which doesn't smash case or
6132 do other bad things. The CMU-CL-style :ENV option is retained
6133 for porting convenience.
6134 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
6135 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
6137 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
6139 * A patch from Martin Atzmueller seems to have solved the SIGINT
6140 problem, and as far as we know, signal-handling now works cleanly.
6141 (If you find any new bugs, please report them!)
6142 * The system no longer defaults Lisp source file names to types
6143 ".l", ".cl", or ".lsp", but only to ".lisp".
6144 * The compiler no longer uses special default file extensions for
6145 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
6146 seems to expect a single default extension for all compiled code,
6147 and there's no compelling reason to try to stretch the standard
6148 to allow two different extensions.) Instead, byte-compiled files
6149 default to the same extension as native-compiled files.
6150 * Fasl file format version numbers have increased again, because
6151 a rearrangement of internal implementation packages made some
6152 dumped symbols in old fasl files unreadable in new cores.
6153 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
6154 many fewer weird special cases.
6155 * Bug #17 (differing COMPILE-FILE behavior between logical and
6156 physical pathnames) has been fixed, and some related misbehavior too,
6157 thanks to a patch from Martin Atzmueller.
6158 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
6159 by Tim Moore, ported to SBCL by Martin Atzmueller.
6160 * Martin Atzmueller fixed several filesystem-related problems,
6161 including bug #36, in part by porting CMU CL patches, which were
6162 written in part by Paul Werkowski.
6163 * More compiler warnings in src/runtime/ are gone, thanks to
6164 more patches from Martin Atzmueller.
6165 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
6168 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
6170 * DESCRIBE now works on CONDITION objects.
6171 * The debugger now handles errors which arise when trying to print
6172 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
6174 * The build system now uses an additional file, customize-target-features.lisp,
6175 to allow local modifications to the target *FEATURES* list. (The point of
6176 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
6177 debugging features enabled, without having to worry about propagating it
6178 into everyone's system when I do a "cvs update".) When no
6179 customize-target-features.lisp file exists, the target *FEATURES* list
6180 should be constructed the same way as before.
6181 * fixed bugs in DEFCONSTANT ANSI-compatibility:
6182 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
6183 warn about behavior which is undefined under the ANSI spec. Note: This
6184 is specified by ANSI, but it's not very popular with programmers.
6185 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
6186 macro in the SBCL sources for an example of a workaround which you
6187 might use to make portable ANSI-standard code which does what you want.
6188 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
6189 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
6190 when it's used as a non-toplevel form. (This is required in order
6191 to implement the DEFCONSTANT-EQX macro.)
6192 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
6193 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
6194 funny things, due to bugs in the implementation of EVAL-WHEN
6195 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
6196 non-toplevel DEFCONSTANTs are uncommon.)
6197 * The core file version number and fasl file version number have been
6198 incremented, because the old noncompliant DEFCONSTANT behavior involved
6199 calling functions which no longer exist, and because I also took the
6200 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
6201 * fixed bug 1 (error handling before read-eval-print loop starts), and
6202 redid debugger restarts and related debugger commands somewhat while
6204 ** The QUIT debugger command is gone, since it did something
6205 rather different than the SB-EXT:QUIT command, and since it never
6206 worked properly outside the main toplevel read/eval/print loop.
6207 Invoking the new TOPLEVEL restart provides the same functionality.
6208 ** The GO debugger command is also gone, since you can just invoke
6209 the CONTINUE restart directly instead.
6210 ** The TOP debugger command is also gone, since it's redundant with the
6211 FRAME 0 command, and since it interfered with abbreviations for the
6213 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
6215 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
6216 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
6217 some porting work by Martin Atzmueller)
6218 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
6219 with a boatload of patches which he ported to SBCL. Now that those
6221 ** The system tries to make sure that its low-priority messages
6222 are prefixed by semicolons, to help people who like to use
6223 syntax highlighting in their ILISP buffer. (This patch
6224 was originally due to Raymond Toy.)
6225 ** The system now optimizes INTEGER-LENGTH better, thanks to more
6226 patches originally written by Raymond Toy.
6227 ** The compiler understands coercion between single-value and
6228 multiple-VALUES type expressions better, getting rid of some very
6229 weird behavior, thanks to patches originally by Robert MacLachlan
6230 and Douglas Crosher.
6231 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
6232 lambda lists, thanks to a patch originally by Pierre Mai.
6233 ** The system no longer bogusly warns about "abbreviated type
6235 ** The compiler gets less confused by inlining and RETURN-FROM,
6236 thanks to some patches originally by Tim Moore.
6237 ** The system no longer hangs when dumping circular lists to fasl
6238 files, thanks to a patch originally from Douglas Crosher.
6239 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6240 undefined function error.
6241 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6242 in structure slot initforms) for now, documented workaround instead:-|
6243 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6244 * fixed bug 5: added stubs for various Gray stream functions called
6245 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6246 installed, at least appropriate type errors are generated
6247 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6248 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6249 consistently in DEFMETHOD forms.
6250 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6251 it doesn't seem to affect SBCL after all
6252 * The C runtime system now builds with better optimization and many
6253 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6255 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6257 * The system is now under CVS at SourceForge (instead of the
6258 CVS repository on my home machine).
6259 * The new signal handling code has been tweaked to treat register
6260 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6261 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6262 downstream, e.g. in debug-int.lisp, has implicit dependencies
6263 on the unsignedness of integer representation of machine words,
6264 and that caused the system to bomb out with infinite regress
6265 when trying to recover from type errors involving signed values,
6266 e.g. (BUTLAST '(1 2 3) -1).)
6267 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6268 (This was one of the bugs Peter Van Eynde reported back in July.)
6269 * The system now uses code inspired by Colin Walters' O(N)
6270 implementation of MAP (from the cmucl-imp@cons.org mailing
6271 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6272 inline the MAP operation, and there is more than one
6273 sequence argument to the MAP call (so that it can't just
6274 do ETYPECASE once and for all based on the type of the
6275 single sequence argument). (The old non-inline implementation
6276 of the general M-argument sequence-of-length-N case required
6277 O(M*N*N) time when any of the sequence arguments were LISTs.)
6278 * The QUIT :UNIX-CODE keyword argument has been renamed to
6279 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6280 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6282 * Raymond Wiker's patches to port dynamic loading from Linux to
6283 FreeBSD have been added.
6284 * The BUGS file is now more nearly up to date, thanks in large part
6285 to Martin Atzmueller's review of it.
6286 * The debugger now flushes standard output streams before it begins
6287 its output ("debugger invoked" and so forth).
6288 * The core version number and fasl file version number have both
6289 been incremented, because of incompatible changes in the layout
6291 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6292 used to not be called for a saved Lisp image.)
6293 * Martin Atzmueller's version of a patch to fix a compiler crash,
6294 as posted on sbcl-devel 13 September 2000, has been installed.
6295 * Instead of installing Martin Atzmueller's patch for the
6296 compiler transform for SUBSEQ, I deleted the compiler transform,
6297 and transforms for some similar consing operations.
6298 * A bug in signal handling which kept TRACE from working on OpenBSD
6300 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6301 away by constant folding
6302 * The system now defines its address space constants in one place
6303 (in the Lisp sources), and propagates them automatically elsewhere
6304 (through GENESIS and the sbcl.h file). Therefore, patching the
6305 address map is less unnecessarily tedious and error-prone. The
6306 Lisp names of address space constants have also been systematized.
6307 * CVS tags like dollar-Header-dollar have been removed from
6308 the sources, because they have never saved me trouble and
6309 they've been source of trouble working with patches and other
6310 diff-related operations.
6311 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6312 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6314 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6316 * The system has been ported to OpenBSD.
6317 * The system now compiles with a simple "sh make.sh" on the systems
6318 that it's supported on. I.e., now you no longer need to tweak
6319 text in the target-features.lisp-expr and symlinks in src/runtime/
6320 by hand, the make.sh takes care of it for you.
6321 * The system is no longer so grossly inefficient when compiling code
6322 involving vectors implemented as general (not simple) vectors (VECTOR T),
6323 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6324 which dares to use the various sequence functions on non-simple
6325 vectors, takes less of a performance hit.
6326 * There is now a primitive type predicate VECTOR-T-P
6327 to test for the (VECTOR T) type, so that e.g.
6328 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6329 can now be compiled with some semblance of efficiency. (The old code
6330 turned the type declaration into a full call to %TYPEP at runtime!)
6331 * AREF on (VECTOR T) is still not fast, since it's still compiled
6332 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6333 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6334 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6335 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6336 without making full calls to SUBTYPEP at runtime.
6337 (Some analogous efficiency issues for non-simple vectors specialized to
6338 element types other than T, or for non-simple multidimensional arrays,
6339 have not been addressed. They could almost certainly be handled the
6340 same way if anyone is motivated to do so.)
6341 * The changes in array handling break binary compatibility, so
6342 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6343 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6344 instead of (VALUES T T).
6345 * By following the instructions that Dan Barlow posted to sbcl-devel
6346 on 2 July 2000, I was able to enable primitive dynamic object
6347 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6348 functionality is not implemented (since it calls ld to resolve
6349 library references automatically, requiring RUN-PROGRAM for its
6350 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6351 try to resolve library references) is now supported.
6352 * The system now flushes the standard output streams when it terminates,
6353 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6354 them at several other probably-convenient times, e.g. in each pass of
6355 the toplevel read-eval-print loop, and after evaluating a form given
6356 as an "--eval" command-line option. (These changes were motivated by a
6357 discussion of stream flushing issues on cmucl-imp in August 2000.)
6358 * The source transform for TYPEP of array types no longer assumes
6359 that an array whose element type is a not-yet-defined type
6360 is implemented as an array of T, but instead punts, so that the
6361 type will be interpreted at runtime.
6362 * There is now some support for cross-compiling in make.sh: each of
6363 the phases of make.sh has its own script. (This should be transparent
6364 to people doing ordinary, non-cross-compile builds.)
6365 * Since my laptop doesn't have hundreds of megabytes of memory like
6366 my desktop machine, I became more motivated to do some items on
6367 my to-do list in order to reduce the size of the system a little:
6368 ** Arrange for various needed-only-at-cold-init things to be
6369 uninterned after cold init. To support this, those things have
6370 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6371 symbols with such names are now uninterned after cold init).
6372 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6373 fasl files for cold load.
6374 ** Remove the old compiler structure pooling code (which used to
6375 be conditional on the target feature :SB-ALLOC) completely.
6376 ** Redo the representation of some data in cold init to be more compact.
6377 (I also looked into supporting byte compiled code at bootstrap time,
6378 which would probably reduce the size of the system a lot, but that
6379 looked too complicated, so I punted for now.)
6380 * The maximum signal nesting depth in the src/runtime/ support code has
6381 been reduced from 4096 to 256. (I don't know any reason for the very
6382 large old value. If the new smaller value turns out to break something,
6383 I'll probably just bump it back up.)
6384 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6386 * Many, many bugs reported by Peter Van Eynde have been added to
6387 the BUGS list; some have even been fixed.
6388 * While enabling dynamic object file loading, I tried to make the
6389 code easier to understand, renaming various functions and variables
6390 with less ambiguous names, and changing some function calling
6391 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6392 * While trying to figure out how to do the OpenBSD port, I tried to
6393 clean up some of the code in src/runtime/. In particular, I dropped
6394 support for non-POSIX signal handling, added various comments,
6395 tweaked the code to reduce the number of compilation warnings, and
6396 renamed some files to increase consistency.
6397 * To support the new automatic configuration functionality in make.sh,
6398 the source file target-features.lisp-expr has been replaced with the
6399 source file base-target-features.lisp-expr and the machine-generated
6400 file local-target-features.lisp-expr.
6401 * fixed a stupid quoting error in make.sh so that using CMU CL
6402 "lisp -batch" as cross-compilation host works again
6404 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6406 * DESCRIBE no longer tries to call itself recursively to describe
6407 bound/fbound values, so that it no longer fails on symbols which are
6408 bound to themselves (like keywords, T, and NIL).
6409 * DESCRIBE now works on generic functions.
6410 * The printer now prints less-screwed-up representations of closures
6411 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6412 * A private symbol is used instead of the :EMPTY keyword previously
6413 used to mark empty slots in hash tables. Thus
6414 (DEFVAR *HT* (MAKE-HASH-TABLE))
6415 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6416 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6417 now does what ANSI says that it should. (You can still get
6418 similar noncompliant behavior if bang on the hash table
6419 implementation with all the symbols you get back from
6420 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6421 This breaks binary compatibility, since tests for equality to
6422 :EMPTY are wired into things like the macroexpansion of
6423 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6425 * There's now a minimal placeholder implementation for CL:STEP,
6426 as required by ANSI.
6427 * An obscure bug in the interaction of the normal compiler, the byte
6428 compiler, inlining, and structure predicates has been patched
6429 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6430 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6432 * Missing ordinary arguments in a macro call are now detected even
6433 when the macro lambda list contains &KEY or &REST.
6434 * The debugger no longer complains about encountering the top of the
6435 stack when you type "FRAME 0" to explicitly instruct it to go to
6436 the top of the stack. And it now prints the frame you request even
6437 if it's the current frame (instead of saying "You are here.").
6438 * As specified by ANSI, the system now always prints keywords
6439 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6441 * The default initial SIZE of HASH-TABLEs is now smaller.
6442 * Type information from CLOS class dispatch is now propagated
6443 into DEFMETHOD bodies, so that e.g.
6444 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6446 is now basically equivalent to
6447 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6448 (DECLARE (TYPE SINGLE-FLOAT X))
6450 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6451 operation, without having to do run-time type dispatch.
6452 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6453 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6454 * Since I don't seem to be making big file reorganizations very often
6455 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6456 is overflowing my ability to conveniently back them up), I've finally
6457 checked the system into CVS. (The CVS repository is on my home system,
6458 not at SourceForge -- putting it on SourceForge might come later.)
6459 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6460 high-level GC-NOTIFY-FOO functions send their output. (There's
6461 still very little control of where low-level verbose GC functions
6462 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6463 less than it used to -- the GC-NOTIFY-FOO functions are now under
6464 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6465 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6466 in only one place in the source code, and propagates it automatically
6467 everywhere that it's needed. Thus e.g. when I bump the version from
6468 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6469 * The C source files now include boilerplate legalese and documentation
6470 at the head of each file (just as the Lisp source files already did).
6471 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6472 to his page will be replaced with a link to his new CLiki service.
6474 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6476 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6477 * The build process now looks for GNU make under the default name "gmake",
6478 instead of "make" as it used to. If GNU make is not available as "gmake"
6479 on your system, you can change this default behavior by setting the
6480 GNUMAKE environment variable.
6481 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6482 can build without error under CMU CL.
6484 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6486 * There is now a partial SBCL user manual (with some new text and some
6487 text cribbed from the CMU CL manual).
6488 * The beginnings of a profiler have been added (starting with the
6489 CMU CL profiler and simplifying and cleaning up). Eventually the
6490 main interface should be through the TRACE macro, but for now,
6491 it's still accessed through vaguely CMU-CL-style functions and macros
6492 exported from the package SB-PROFILE.
6493 * Some problems left over from porting CMU CL to the new
6494 cross-compilation bootstrap process have been cleaned up:
6495 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6496 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6497 part when getting rid of the compiler *BACKEND* stuff.)
6498 ** The value of *NULL-TYPE* was screwed up, because it was
6499 being initialized before the type system knew the final
6500 definition of the 'NULL type. This screwed up several key
6501 optimizations in the compiler, causing inefficiency in all sorts
6502 of places. (I found it because I wanted to understand why
6503 GET-INTERNAL-RUN-TIME was consing.)
6504 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6505 PROCLAIM FTYPE information. Unfortunately this broke binary
6506 compatibility again, since now the forms output by DEFGENERIC
6507 to refer to functions which didn't exist in 0.6.3.
6508 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6509 can use the new (as of 0.6.3) transform for SOME into MAP into
6511 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6512 values to (INTEGER 0 1000000), so that the time code will no longer
6513 occasionally get blown up by Linux returning 1000000 microseconds
6514 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6515 its output conform to the ANSI spec. (Alas, this makes its output
6516 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6517 * A full call to MAP NIL with a single sequence argument no longer conses.
6518 * fixes to problems pointed out by Martin Atzmueller:
6519 * The manual page no longer talks about multiprocessing as though
6520 it were currently supported.
6521 * The ILISP support patches have been removed from the distribution,
6522 because as of version 5.10.1, ILISP now supports SBCL without us
6523 having to maintain patches.
6524 * added a modified version of Raymond Toy's recent CMU CL patch for
6525 EQUALP comparison of HASH-TABLE
6527 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6529 * The system still can't cross-compile itself with
6530 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6531 entails), but at least it can compile more of itself that way
6532 than it used to be able to, and various buglets which were uncovered
6533 by trying to cross-compile itself that way have now been fixed.
6534 * This release breaks binary compatibility again. This time
6535 at least I've incremented the FASL file format version to 2, so that the
6536 problem can be detected reliably instead of just causing weird errors.
6537 * various new style warnings:
6538 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6539 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6540 ** using the lexical binding of a variable named in the *FOO* style
6541 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6542 as specified by ANSI.
6543 * *RANDOM-STATE* is no longer automatically initialized from
6544 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6545 default behavior of the system is to repeat its behavior every time
6546 it's run. If you'd like to change this behavior, you can always
6547 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6548 old convention there was no comparably easy way to get the system to
6549 repeat its behavior every time it was run.
6550 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6551 FTYPE declarations has been removed, in favor of their ANSI
6552 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6553 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6554 the types of their sequence arguments can be determined at compile time.
6555 This is done through a new open code expansion for MAP which eliminates
6556 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6557 argument types can be determined at compile time.
6558 * The optimizer now transforms COERCE into an identity operation when it
6559 can prove that the coerced object is already of the correct type. (This
6560 can be a win for machine generated code, including the output of other
6561 optimization transforms, such as the MAP transform above.)
6562 * Credit information has been moved from source file headers into CREDITS.
6563 * Source file headers have been made more standard.
6564 * The CASE macro now compiles without complaining even when it has
6567 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6569 * (Note that the way that the PCL macroexpansions were rewritten
6570 to accommodate the change in DEFGENERIC below breaks binary
6571 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6572 not run under sbcl-0.6.2. Once we get out of alpha releases,
6573 i.e. hit release 1.0.0, we'll probably try to maintain binary
6574 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6575 and sbcl-1.4.4. Until then, however, it might be fairly common
6576 for maintenance releases to break binary compatibility.)
6577 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6579 * The reporting of unhandled signals has been changed to print some
6580 explanatory text as well as the report form. (Previously only
6581 the report form was printed.)
6582 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6583 it defines, so that the compiler no longer issues undefined function
6584 warnings for compiled-but-not-yet-loaded generic functions.
6585 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6586 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6587 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6588 section of the ANSI spec are supported.
6589 * The "" nickname for the "KEYWORD" package has been removed.
6590 The reader still handles symbol tokens which begin with a package marker
6591 as keywords, but it doesn't expose its mechanism for doing so in the
6592 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6593 * The system now issues STYLE-WARNINGs for contradictory TYPE
6594 proclamations. (Warnings for contradictory FTYPE proclamations would
6595 be nice too, but those can't be done usefully unless the type system
6596 is made smarter about FUNCTION types.)
6597 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6598 systematized, so that "*target-*.lisp is supposed to exist only on the
6599 target and imply that there's a related file which exists on the
6600 host, and *host-*.lisp is supposed to exist only on the host and imply
6601 that there's a related file which exists on the target. This involves a
6602 lot of renaming. Hopefully the acute confusion caused by the renaming
6603 will be justified by the reduction in chronic confusion..
6604 ** runtime-type.lisp -> early-target-type.lisp
6605 ** target-type.lisp -> late-target-type.lisp
6606 ** early-host-format.lisp -> early-format.lisp
6607 ** late-host-format.lisp -> late-format.lisp
6608 ** host-error.lisp -> misc-error.lisp
6609 ** early-error.lisp -> early-target-error.lisp
6610 ** late-error.lisp -> late-target-error.lisp
6611 ** host-defboot.lisp -> early-defboot.lisp
6612 ** code/misc.lisp -> code/target-misc.lisp
6613 ** code/host-misc.lisp -> code/misc.lisp
6614 ** code/numbers.lisp -> code/target-numbers.lisp
6615 ** code/early-numbers.lisp -> numbers.lisp
6616 ** early-host-type.lisp -> early-type.lisp
6617 ** late-host-type.lisp -> late-type.lisp
6618 ** host-typep.lisp -> typep.lisp
6619 ** load.lisp -> target-load.lisp
6620 ** host-load.lisp -> load.lisp
6621 ** host-disassem.lisp -> disassem.lisp
6622 ** host-insts.lisp -> insts.lisp
6623 ** byte-comp.lisp -> target-byte-comp.lisp
6624 ** host-byte-comp.lisp -> byte-comp.lisp
6625 ** host-signal.lisp -> signal.lisp
6626 ** host-defstruct.lisp -> defstruct.lisp
6627 ** late-target-type.lisp -> deftypes-for-target.lisp
6628 Furthermore, several other previously target-only files foo.lisp (e.g.
6629 hash-table.lisp and random.lisp) have been split into a target-and-host
6630 foo.lisp file and a target-only target-foo.lisp file, with their key type
6631 definitions in the target-and-host part, so that the cross-compiler will
6632 know more about target types.
6633 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6634 gone away. In their place are various *BACKEND-FOO* variables
6635 corresponding to the slots of the old structure.
6636 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6637 into the target SBCL has been fixed.
6638 * The chill.lisp system for loading cold code into a running SBCL
6640 * Support for the CMU CL "scavenger hook" extension has been removed.
6641 (It was undocumented and unused in the CMU CL sources that SBCL was
6642 derived from, and stale in sbcl-0.6.1.)
6643 * Various errors in the cross-compiler type system were detected
6644 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6645 (enabling various consistency checks). Many of them were fixed,
6646 but some hard problems remain, so the compiler is back to
6647 running without *TYPE-SYSTEM-INITIALIZED* for now.
6648 * As part of the cross-compiler type system cleanup, I implemented
6649 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6650 * I have started adding UNCROSS calls throughout the type system
6651 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6652 on cross-compiler input files will be able to go away, and various
6654 * CONSTANTP now returns true for quoted forms (as explicitly required
6657 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6659 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6660 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6661 (MAKE-LIST -1). In the longer term, it ought to become true
6662 that declarations are assertions even at SAFETY 1. For now, it's not
6663 quite true even at SAFETY 3, but it's at least more nearly true..
6664 (Note that this change seems to increases the size of the system by
6665 O(5%) and to decrease the speed of the compiler by 20% or more.)
6666 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6667 for the problem of printing dozens of lines of distracting information
6668 about low-level system machinery as part of the top stack frame
6669 on entry to the debugger when an undefined function was called.
6670 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6671 is not reset to COMMON-LISP-USER.
6672 * Compilation of stuff related to dyncount.lisp has been made conditional
6673 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6674 smaller. The various dyncount-related symbols have been moved into
6675 a new "SB-DYNCOUNT" package.
6676 * tty-inspect.lisp has been renamed to inspect.lisp.
6677 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6678 feature has gone away. (When we eventually port to other flavors of
6679 libc and/or Unix, we'll try to make the differences between flavors
6680 invisible at the user level.)
6681 * Various other *FEATURES* tags, and/or their associated conditionals,
6682 have been removed if obsolescent, or given better documentation, or
6683 sometimes given more-mnemonic names.
6685 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6687 * tidied up "make.sh" script
6688 * tidied up system directory structure
6689 * better "clean.sh" behavior
6690 * added doc/FOR-CMUCL-DEVELOPERS
6691 * many many small tweaks to output format, e.g. removing possibly-confusing
6692 trailing #\. character in DESCRIBE-INSTANCE
6693 * (EQUALP #\A 'A) no longer signals an error.
6694 * new hashing code, including EQUALP hashing
6695 * tidied up Lisp initialization and toplevel
6696 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6697 * command line argument processing
6698 * added POSIX-GETENV function to deal with Unix-ish environment variables
6699 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6700 terminating SBCL on EOF
6701 * non-verbose GC by default
6702 * There is no more "sbcl" shell script; the sbcl file is now the C
6703 runtime executable (just like CMU CL).
6704 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6706 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6707 symbol and package information as Lisp native symbol and package objects
6708 instead of strings naming symbols and strings naming packages. This way,
6709 whenever packages are renamed (as in warm init), debug information is
6710 transformed along with everything else.
6711 * tweaked the optimization policy declarations which control the building
6712 of SBCL itself. Now, among other things, the system no longer saves
6713 source location debugging information. (This helps two problems at once
6714 by reducing SBCL size and by keeping SBCL from trying to look for its
6715 sources -- which may not exist -- when reporting errors.)
6716 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6717 debugging and testing purposes
6718 * cleaned up printing, making the printer call PRINT-OBJECT for
6719 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6720 methods, giving nearly-ANSI behavior
6721 * converted almost all special variables to use *FOO* naming convention
6722 * deleted PARSE-TIME functionality, since it can be done portably
6723 * moved some files out of cold init into warm init
6724 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6726 * regularized formatting of source files
6727 * added an install.sh script
6728 * fixed ridiculous memory usage of cross-compiler by making
6729 compiler/alloc.lisp not try to do pooling unless it can hook
6730 itself into the GC of the cross-compilation host. Now the system
6731 builds nicely on my old laptop.
6732 * added :SB-ALLOC in target-features.lisp-expr
6733 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6734 was not implemented)
6735 * re-did condition handling and note reporting in the compiler. Notes
6736 are no longer handled by signalling conditions. Style warnings
6737 and warnings are handled more correctly and reported in such a way
6738 that it's easy to find one or the other in your output (so that you
6739 can e.g. figure out which of many problems caused COMPILE-FILE to
6741 * changed the severity of several compiler warnings from full WARNING
6742 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6743 compiler note reporting so that it doesn't use the condition system
6744 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6745 COMPILE-FILE command)
6746 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6747 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6748 no longer supported, since their implementation was deeply intertwingled
6749 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6750 * removed bogus "support" for compiler macros named (SETF FOO), and
6751 removed the compiler macro for SETF INFO (but only after making a fool
6752 of myself on the cmucl-imp mailing list by posting a bogus patch for
6753 DEFINE-COMPILER-MACRO..)
6754 * Compiled files containing forms which have side effects on the Lisp
6755 reader (such as DEFPACKAGE forms) are now handled more correctly.
6756 (Compiler queuing of top level lambdas has been suppressed by setting
6757 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6758 * deleted various currently-unused source files, e.g. gengc.lisp. They
6759 may be added back at some point e.g. when porting to other architectures,
6760 but until they are it's distracting to distribute them and to try to
6762 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6763 there were so many of them they're just distractions, and UNCROSS is
6764 known to be able to handle the current sources
6765 * moved PROFILE functionality into TRACE, so that it will be clear
6766 how the wrapping and unwrapping of functions when you profile them
6767 interacts with the wrapping and unwrapping of functions when you
6768 trace them. (Actually, the functionality isn't there yet, but at least
6769 the interface specification is there. Hopefully, the functionality will
6770 arrive with some future maintenance release.)
6771 * removed host-oops.lisp
6772 * changed signature of QUIT function to allow UNIX-CODE argument
6773 * fixed READ-SEQUENCE bug
6774 * tweaked verbose GC output so that it looks more like the progress
6775 output that ANSI specifies for functions like LOAD
6776 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6777 * added <http://sbcl.sourceforge.com> to the banner information printed by