1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.56:
3 * RANDOM enhancements and bug fixes:
4 ** bug fix: the range and distribution of random integers could be
5 catastrophically wrong when the compiler derived the type of its
6 argument as a disjoint set of small integers.
7 ** bug fix: the distribution of random integers is now completely
8 uniform even when the specified limit is not a power of two.
9 (Previously some values could be about 0.1 % more probable than
10 others in the worst case.)
11 ** RANDOM on large integer arguments is generally faster and conses
12 less than before; this is visible for fixnums above a length of
13 about 24 bits, but extremely so for bignums: the old implementation
14 used time and space quadratical in the size of the argument there,
15 the new one is linear.
16 * enhancement: redesigned protocol for quitting SBCL. SB-EXT:EXIT is the new
17 main entry point, SB-EXT:QUIT is deprecated.
18 * enhancement: additions to the SB-THREAD API: RETURN-FROM-THREAD,
19 ABORT-THREAD, MAIN-THREAD-P, and MAIN-THREAD.
20 * enhancement: FASL loading no longer grabs the world-lock.
21 * enhancement: GENCGC reclaims space more aggressively when objects being
22 allocated are a large fraction of the total available heap space.
24 * enhancement: backtraces show the correct number of arguments for frames
25 called with too many arguments.
26 * enhancement: support for abort(3), exit(3), and _exit(2) has been added to
28 * enhancement: ASDF has been updated 2.21.
29 * optimization: fewer uses of full calls to signed modular functions.
31 * optimization: typechecking alien values is typically 5 x faster.
32 * optimization: FDEFINITION, SYMBOL-FUNCTION, MACRO-FUNCTION, and FBOUNDP
34 * bug fix: file compilation performance issues when dumping subtypes
35 of CHARACTER (lp#994487)
36 * bug fix: fixed disassembly of some SSE instructions on x86-64.
37 * bug fix: SB-SIMPLE-STREAMS signals an error for bogus :CLASS arguments in
38 OPEN. (lp#969352, thanks to Kambiz Darabi)
39 * bug fix: CASE normal-clauses do not allow T and OTHERWISE as keys.
41 * bug fix: (SETF (FIND-CLASS X) NIL) removed proper name of the underlying
42 classoid even if X was not the proper name of the class. (lp#941102)
43 * bug fix: declaration leakage between lexical environments due to careless
44 use of NCONC in MAKE-LEXENV. (lp#924276)
45 * bug fix: ENSURE-DIRECTORIES-EXIST now works when
46 *default-pathname-defaults* contains NAME or TYPE components.
47 * bug fix: PPRINT couldn't print improper lists with CARs being some symbols
48 from CL package, e.g. (loop . 10).
49 * bug fix: run-program with existent or non-existent files for :output or
50 :input when :if-output-exists or :if-input-does-not-exist are NIL properly
51 returns NIL instead of signalling an obscure error.
52 * bug fix: fix miscompilation of some logand forms with large constant
53 arguments. (lp#974406)
54 * bug fix: account for funcallable-instance objects properly in ROOM.
55 * bug fix: incorrect octets reported for c-string decoding errors.
57 * bug fix: miscompilation of LDB on the PowerPC platform. (thanks to Bruce
59 * bug fix: better input error reporting for COMPILE-FILE. (lp#493380)
60 * bug fix: default size of non-nursery generations has been shrunk on GENCGC,
61 allowing faster release of memory back to the OS. (lp#991293)
62 * bug fix: WITH-DEADLINE (:SECONDS NIL :OVERRIDE T) now drops any
63 existing deadline for the dynamic scope of its body.
65 ** improved docstrings: REPLACE (lp#965592)
67 changes in sbcl-1.0.56 relative to sbcl-1.0.55:
68 * bug fix: fix copy-structure. When copying from stack to heap, garbage
69 could end up in the heap making GC unhappy.
70 (Thanks to James Knight, lp#911027)
72 ** SBCL can now be built using Clang.
73 ** ASDF has been updated 2.20.
74 * bug fix: compiler errors when weakening hairy integer types. (lp#913232)
75 * bug fix: don't complain about a too-hairy lexical environment for inlining
76 when the function has never been requested for inlining. (lp#963530)
78 changes in sbcl-1.0.55 relative to sbcl-1.0.54:
79 * enhancements to building SBCL using make.sh:
80 ** --fancy can be specified to enable all supported feature enhancements.
81 ** --with-<feature> and --without-<feature> can be used to specify
82 which features to build with.
83 ** --arch option can be used to specify the architecture to build for.
84 (Mainly useful for building 32-bit SBCL's on x86-64 hosts, not
85 full-blows cross-compilation.)
86 * enhancement: extended package prefix syntax <pkgname>::<form-in-package>
87 which allows specifying name of the default interning package for the
89 * enhancement: when *READ-EVAL* is true, arrays with element type other than
90 T can be printed readably using #.-based syntax. (Thanks to Robert Brown)
91 * enhancement: MAKE-ALIEN signals a storage-condition instead of returning a
92 null alien when malloc() fails. (lp#891268)
93 * enhancement: SB-EXT:PRINT-UNREADABLY restart for PRINT-NOT-READABLE
94 conditions can be conveniently accessed through function with the same
95 name, analogously to CONTINUE.
96 * enhancement: SB-EXT:*SUPPRESS-PRINT-ERRORS* can be used to suppress errors
97 from the printer by type, causing an error marker to be printed instead.
98 (Thanks to Attila Lendvai)
99 * enhancement: BACKTRACE and DESCRIBE now bind *PRINT-CIRCLE* to T, and
100 generally behave better when errors occur during printing.
101 * enhancement: the test runner now takes a --report-skipped-tests argument
102 to report the individual tests skipped as well as the number of skipped
104 * enhancement: undefined functions now appear in backtraces as ("undefined
105 function") instead of ("bogus stack frame") on x86oids.
106 * enhancement: detected deadlocks no longer cause stderr to be spammed, and
107 deadlock errors are reported in an easier-to-decipher manner.
108 * enhancement: DESCRIBE on type designators reports the expansion in more
110 * enhancement: SBCL now provides either an explicit :BIG-ENDIAN or
111 :LITTLE-ENDIAN in *FEATURES*, instead of :BIG-ENDIAN being implied by lack
112 of the :LITTLE-ENDIAN feature. (Thanks to Luís Oliveira, lp#901661)
113 * enhancement: better disassembly of segment-prefixes on x86 and other
114 instruction prefixes (e.g. LOCK) on x86 and x86-64.
115 * optimization: FIND and POSITION on bit-vectors are orders of magnitude
116 faster (assuming KEY and TEST are not used, or are sufficiently trivial.)
117 * optimization: SUBSEQ on vectors of unknown element type is substantially
119 * optimization: specialized arrays with non-zero :INITIAL-ELEMENT can
120 be stack-allocated. (lp#902351)
121 * optimization: the compiler is smarter about representation selection for
122 floating point constants used in full calls.
123 * optimization: the compiler no longer refuses to coerce large fixnums to
124 single floats inline, except on x86 where this limitation is still
126 * optimization: truncation operations on integers with constant divisor
127 arguments 1 and -1 are optimized away.
128 * bug fix: deadlock detection could report the same deadlock twice, for
129 two different threads. Now a single deadlock is reported exactly once.
130 * bug fix: interval-arithmetic division during type derivation did not
131 account for signed zeros.
132 * bug fix: compiler error when typechecking a call to a function with
133 non-constant keyword arguments.
134 * bug fix: misoptimization of TRUNCATE causing erratic behaviour.
135 * bug fix: condition slot accessors no longer cause undefined function
136 style-warnings when used in the :REPORT clause of the DEFINE-CONDITION
137 form that defines them. (lp#896379)
138 * bug fix: DEFGENERIC warns about unsupported declarations, as specified
140 * bug fix: SUBTYPEP tests involving forward-referenced classes no longer
141 bogusly report NIL, T.
142 * bug fix: bogus style-warnings for DEFMETHOD forms that both declared some
143 required arguments ignored and performed assignments to others.
145 * bug fix: *EVALUATOR-MODE* :COMPILE treated (LET () ...) identically
146 to (LOCALLY ...) leading to internally inconsistent toplevel-formness.
147 * bug fix: non-toplevel DEFSTRUCT signaled a style warning for unknown type.
148 * bug fix: redefining a function whose previous definition contained an
149 unknown type no longer causes a style-warning. (lp#806243)
150 * bug fix: undefined functions now appear in backtraces as ("undefined
151 function") instead of ("bogus stack frame") on non-x86oids.
152 * bug fix: backtraces are no longer cut off at ("undefined function") when
153 called under certain circumstances (involving a caller-allocated stack
155 * bug fix: RUN-PROGRAM leaked a file-descriptor per call on non-Windows
156 systems. (regression since 1.0.53)
157 * bug fix: GC deadlocks from dladdr() on certain platforms.
158 * bug fix: broken standard streams no longer automatically cause recursive
159 errors on debugger entry.
160 * bug fix: build ignored --dynamic-space-size=<size> argument to make.sh
161 (regression since 1.0.53)
162 * bug fix: attempts to stack allocate a required argument to a function with
163 an external entry point caused compiler-errors.
164 * bug fix: compiler notes for failed stack allocation for a function argument
165 no longer claim to be unable to stack allocate the function.
166 * bug fix: COERCE now signals a type-error on several coercions to
167 subtypes of CHARACTER that are forbidden according to ANSI. (lp#841312)
168 * bug fix: missing failure-to-stack-allocate compiler notes for some
169 forms of MAKE-ARRAY with dynamic-extent. (lp#902351)
170 * bug fix: some of the compile-time side-effects of DEFCLASS were not caught
172 * bug fix: Proper handling of --dynamic-space-size option on 32 bit platforms.
174 changes in sbcl-1.0.54 relative to sbcl-1.0.53:
175 * minor incompatible changes:
176 ** RENAME-FILE on a symbolic links used to rename the linked-to file
178 ** DELETE-DIRECTORY on symbolic link to a directory used to delete the
179 directory, but now signal an error instead. Use TRUENAME to resolve the
180 pathname if you wish to delete the linked directory, and DELETE-FILE if
181 you wish to delete the
182 ** The internal SB-THREAD::SPINLOCK API has been deprecated, and using
183 symbols associated with it will trigger a compile-time warning.
184 * thread-related enhancements:
185 (This work has been funded by the SBCL Threading 2011 IndieGoGo campaign.
186 Many thanks to generous donors!)
187 ** Threading is now more reliable on non-Linux platforms. We still don't
188 consider threads on non-Linux platforms good enough to enable them by
189 default, but they're in a clearly better shape now.
190 ** Deadlines supported now on all platforms.
191 ** All blocking functions in the threading API now have a :TIMEOUT
193 ** Semaphore notification objects have been added to SB-THREAD.
194 ** SB-CONCURRENCY contrib now includes Allegro-style GATE objects.
195 ** SB-EXT:COMPARE-AND-SWAP has been extended to support SLOT-VALUE,
196 STANDARD-INSTANCE-ACCESS, and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
197 ** Users can now defined new places usable with SB-EXT:COMPARE-AND-SWAP
198 using an API anologous to defining new SETFable places.
199 * GC-related enhancements and bug fixes:
200 ** --dynamic-space-size and --control-stack-size now understand Kb, Mb,
201 and Gb suffixes. Default is megabytes as before.
202 ** on GENCGC targets, the default dynamic space size is now 512Mb for
203 32-bit systems, and 1Gb for 64-bit systems. (OpenBSD/x86-64 is the only
204 exception, defaulting to mere 444Mb to fit under default ulimits.) The
205 new defaults are in place to prevent hitting swap on low-end systems.
206 Use build-time option --dynamic-space-size to build an SBCL with
207 another default, or the runtime option to adjust the size at startup: a
208 good size is at most equal to the amount of physical memory the system
210 ** on GENCGC targets, nursery and generation sizes now default to 5% of
212 ** on GENCGC targets, SB-KERNEL:MAKE-LISP-OBJ no longer categorically
213 refuses to create SIMPLE-FUN objects.
214 ** on 64-bit GENCGC targets, setting the nursery size above 4Gb now works.
216 ** on CHENEYGC targets, SB-KERNEL:MAKE-LISP-OBJ now does the same
217 validation of pointer objects as GENCGC does, instead of a
218 comparatively weak bounds-check against the heap spaces.
219 * SB-BSD-SOCKETS bug fixes:
220 ** GET-PROTOCOL-BY-NAME had a significant memory leak.
221 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS small amounts of memory on
222 systems with getaddrinfo().
223 ** GET-HOST-BY-NAME and GET-HOST-BY-ADDRESS weren't thread or interrupt
224 safe outside systems with getaddrinfo().
225 * enhancement: ASDF has been updated 2.019.
226 * enhancement: special-case TCO prevention for functions which never return
227 extended to untrusted types, keeping one more frame's worth of debug
228 information around in many cases.
229 * enhancement: debug-names of anonymous and local function are more
230 descriptive. Affects backtraces and SB-SPROF results. (lp#805100)
231 * enhancement: on win32, ABS of complex floats guards better against
232 overflows. (lp#888410)
233 * enhancement: RUN-PROGRAM now distinguishes exec() failing from child
234 process exiting with code 1. (lp#676987)
235 * enhancement: convenience function SET-SBCL-SOURCE-LOCATION for informing
236 the system where on the filesystem the SBCL sources themselves are
237 located. (Thanks to Zach Beane)
238 * enhancement: the compiler is now able to derive tighter bounds for
239 floating point numbers in some cases. (Thanks to Lutz Euler, lp#894498)
240 * bug fix: on 64-bit targets, atomic-incf/aref does index computation
241 correctly, even on wide-fixnum builds. (lp#887220)
242 * bug fix: (DIRECTORY "foo/*/*.*") did not follow symlinks in foo/ that
243 resolved to directories.
244 * bug fix: type mismatch when assigning to lexical variables no longer
245 result in fasl-dumping internal type objects. (lp#890750)
246 * bug fix: type mismatch on (SETF AREF) and function return values no
247 longer result in fasl-dumping internal type objects.
248 * bug fix: With several combinations of argument types, for example (EXPT
249 <integer> <(complex double)>), EXPT now uses double-precision throughout
250 instead of partially calculating only to single-precision. (lp#741564;
251 thanks to Lutz Euler)
252 * bug fix: SYMBOL-VALUE-IN-THREAD is no longer able to construct bogus
253 objects when interrupted by GC on PPC.
255 changes in sbcl-1.0.53 relative to sbcl-1.0.52:
256 * enhancement: on 64-bit targets, in src/compiler/generic/early-vm.lisp,
257 the parameter n-fixnum-tag-bits may now vary from 1 (fixnum =
258 (signed-byte 63)) to 3 (fixnum = (signed-byte 61)) at build-time.
259 * enhancement: SB-EXT:WAIT-FOR allows waiting for arbitrary events.
260 * minor(?) incompatible(?) change: The default fixnum width on 64-bit
261 targets is now 63 bits (up from 61).
262 * enhancement: DESCRIBE now reports a lambda-list and source location
263 for complext setf-expanders.
264 * bug fix: PUSH, PUSHNEW, POP, REMF, INCF, DECF, DEFINE-MODIFY-MACRO,
265 GETF, LOGBITP, LDB, and MASK-FIELD now arrange for non-primary values
266 of multiple-valued places to be set to NIL, instead of signalling an
267 error (per a careful reading of CLHS 5.1.2.3).
268 * bug fix: floating-point traps now work on darwin/x86 and /x86-64.
269 * bug fix: repair crash in x86oid darwin signal handling emulation
270 when built with certain compilers.
271 * bug fix: SB-ROTATE-BYTE misrotated to the right when using constant
272 rotation arguments on x86-64. (lp#882151)
273 * bug fix: low-level control flow optimisations could result in bogus
274 code in functions with tail and non-tail calls to local functions on
276 * bug fix: on SPARC/:sb-unicode, avoid crashing the assembler by trying
277 to emit literal characters > (code-char 4095), for comparisons with
279 * bug fix: ROOM reported only the low 32 bits of dynamic space usage
280 on 64 bit platforms. (lp#881445)
281 * bug fix: DELETE-FILE did not MERGE-PATHNAMES, making it possible to
282 delete the wrong file when using relative pathnames. (lp#882877)
283 * bug fix: optimized SEARCH of vectors-on-vectors mishandled zero-length
284 sequences and :KEY NIL.
286 changes in sbcl-1.0.52 relative to sbcl-1.0.51:
287 * enhancement: ASDF has been updated to version 2.017.
288 * enhancement: the --core command line option now accepts binaries with
290 * enhancement: when built with :sb-core-compression, core files (regular
291 or executable) can be compressed with zlib. Use the :COMPRESSION
292 argument to SAVE-LISP-AND-DIE to specify a compression level.
293 * enhancement: --[no-]merge-core-pages determines whether the runtime
294 hints the operating system that identical core pages between SBCL
295 processes should share the same physical memory. Default is to only
296 enable this for compressed cores.
297 * optimization: SLEEP no longer conses.
298 * optimization: *PRINT-PRETTY* no longer slows down printing of strings
299 or bit-vectors when using the standard pretty-print dispatch table.
300 * bug fix: non-function FTYPE declarations no longer cause a compiler-error.
302 * bug fix: compiler-errors causes by MEMBER types in conjunction with with
303 AREF, CHAR, etc. (lp#826971)
304 * bug fix: compiler-errors causes by integer arguments with composed of
305 multiple ranges to ARRAY-IN-BOUNDS-P. (lp#826970)
306 * bug fix: ,@ and ,. now signal a read-time error for certain non-list
307 expressions. (lp#770184)
308 * bug fix: complex single float literals are correctly aligned when used
309 as arguments of arithmetic operators.
310 * bug fix: on 32-bit platforms, rounding of double floats larger than a
311 fixnum is correct. (reported by Peter Keller)
312 * bug fix: stray FD-HANDLERs are no longer left lying around after unwinds
313 from RUN-PROGRAM. (lp#840190, reported by Dominic Pearson; fix from Max
315 * bug fix: redefining classes such that slots with custom allocation are
316 added or removed works again.
318 changes in sbcl-1.0.51 relative to sbcl-1.0.50:
319 * minor incompatible change: SB-BSD-SOCKET socket streams no longer
320 participate in SERVE-EVENT by default: pass :SERVE-EVENTS T to
321 MAKE-SOCKET-STREAM if using SERVE-EVENT.
322 * enhancement: added support for socket keepalive timeout intervals
323 and probe counts on Linux.
324 * enhancement: building 32-bit SBCL on Linux/x86-64 now works without a
325 chroot. (Use "SBCL_ARCH=x86 sh make.sh" to build.)
326 * enhancement: added new toplevel options --quit and --non-interactive
328 * enhancement: the Windows port of SBCL now builds and runs on Wine
329 (thanks to Anton Kovalenko).
330 * enhancement: more, and more correct, SSE instruction definitions on
331 x86-64 (thanks to Alexander Gavrilov).
332 * enhancement: SB-EXT:SPIN-LOOP-HINT assembles to an instruction designed
333 to help the processor execute spin loops, when applicable. Currently
334 implemented for x86 and x86-64.
335 * optimization: unsigned integer divisions by a constant are implemented
336 using multiplication (affects CEILING, FLOOR, TRUNCATE, MOD, and REM.)
337 * optimization: improved type-derivation for LOAD-TIME-VALUE.
338 * bug fix: correct RIP offset calculation in SSE comparison and shuffle
339 instructions. (lp#814688)
340 * bug fix: COERCE to unfinalized extended sequence classes now works.
341 (reported by Jan Moringen; lp#815155)
342 * bug fix: a compiler error during typecheck generation, reported by Eric
344 * bug fix: obsolete instance protocol fires when shared slots are added
346 * bug fix: fixed-format floating point printing with scaling factors.
348 * bug fix: using GCC >= 4.6 to build SBCL on x86 no longer breaks
349 backtraces. (lp#818460)
350 * bug fix: better backtraces for interrupted syscall frames on x86.
352 * bug fix: SSE comparison instructions can be disassembled even when one
353 operand is in memory. (lp#814702)
354 * bug fix: incomplete writes when not using SERVE-EVENTS. (lp#820599)
355 * bug fix: MULTIPLE-VALUE-BIND + VALUES -> LET conversion could lose derived
356 type information associated with the VALUES form.
357 * bug fix: broken warnings/errors for type-errors involving LOAD-TIME-VALUE
359 * bug fix: OPEN :IF-EXISTS :APPEND now returns correct FILE-POSITION before
360 first write (lp#561642).
361 * bug fix: compiled closures from EVAL could not be DESCRIBEd. (lp#824974)
362 * bug fix: bound propagation involving conversion of large bignums to
363 floats no longer signals a SIMPLE-TYPE-ERROR, reported by Lutz Euler.
365 * bug fix: &REST to &MORE conversion still works in unsafe call to known
366 functions; reported by Lutz Euler (lp#826459).
367 * bug fix: bogus deadlocks from interrupts and GCs. (lp#807475, regression
370 changes in sbcl-1.0.50 relative to sbcl-1.0.49:
371 * enhancement: errors from FD handlers now provide a restart to remove
372 the offending handler.
373 * enhancement: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works on structure
375 * enhancement: location of user or system initialization file can now easily
376 be customized for saved cores. See: SB-EXT:*USERINIT-PATHNAME-FUNCTION*
377 and SB-EXT:*SYSINIT-PATHNAME-FUNCTION*.
378 * enhancement: SB-EXT:MAKE-THREAD accepts an argument list designator for
379 the thunk, as a keyword argument, :arguments.
380 * enhancement: constraint propagation is simplified (and sped up) when
381 COMPILATION-SPEED > SPEED.
382 * enhancement: SB-ALIEN exports alien type specifiers SIZE-T and OFF-T.
383 * enhancement: debugger understands &MORE arguments better.
384 * optimization: extracting bits of a single-float on x86-64 has been
385 optimized. (lp#555201)
386 * optimization: MAP and MAP-INTO are more efficient for non-simple vectors,
387 when (> SPEED SPACE).
388 * optimization: local call trampolines (x86 and x86-64) are emitted
390 * optimization: implicit value cells for dynamic-extent closed-over bindings
391 on x86 and x86-64 can hold unboxed values as well.
392 * meta-optimization: improved compilation speed, especially for large
393 functions. (lp#792363 and lp#394206)
394 * bug fix: bound derivation for floating point operations is now more
395 careful about rounding possibly closing open bounds. (lp#793771)
396 * bug fix: SB-POSIX:SYSCALL-ERROR's argument is now optional. (accidental
397 backwards incompatible change in 1.0.48.27)
398 * bug fix: occasional debugger errors in when a type-error occured in a
399 function with dynamic-extent &rest list.
400 * bug fix: &optional and &key supplied-p arguments in DEFSTRUCT
401 boa-construtors can be used to initialized structure slots.
402 * bug fix: FMAKUNBOUND removes the MACRO-FUNCTION, should one exist.
403 (lp#795705, regression)
404 * bug fix: DIRECTORY works better on logical pathnames.
405 * bug fix: RUN-PROGRAM no longer fails spuriously when argument strings
406 are of the order of ARRAY-TOTAL-SIZE-LIMIT. (lp#787237)
407 * bug fix: the compiler no longer constant-folds NaNs in
408 MAKE-{SINGLE,DOUBLE}-FLOAT. (lp#486812)
409 * bug fix: FORMAT now handles floating point rounding correct, eg.
410 (format nil "~,1F" 0.01) => "0.0" instead of "0.01" as previously.
412 * bug fix: style warning during lambda-list introspection of generic
413 functions with both optional and key argments.
414 * bug fix: regalloc doesn't barf on unused TNs due to type-directed constant
416 * bug fix: Fixed an off-by-one in MAP-ALLOCATED-OBJECTS that might have caused
419 changes in sbcl-1.0.49 relative to sbcl-1.0.48:
420 * minor incompatible change: WITH-LOCKED-HASH-TABLE no longer disables
421 interrupts for its body.
422 * enhancement: source locations are now available for files loaded as
423 source, compile-time-too evaluation, and initialization files.
424 * enhancement: WITH-COMPILATION-UNIT :SOURCE-NAMESTRING allows providing
425 virtual source-file information, eg. overriding input-file of COMPILE-FILE
426 when a temporary file is used for compilation.
427 * enhancement: ASDF has been updated to version 2.015.3.
428 * enhancement: backtraces involving frames from the default evaluator are
430 * enhancement: RUN-PROGRAM works with user-defined binary input and output
432 * enhancement: more informative compile-time warnings and runtime errors for
433 type-errors detected at compile-time.
434 * enhancement: deadlock detection for mutexes and spinlocks.
435 * enhancement: dynamic-extent for &rest lists stack allocate only their
436 spines, not their argumets. While portable code should not rely on this,
437 particularly in combination with inlining, it should make dynamic-extent
438 easier to use safely.
439 * enhancement: SB-POSIX improvements:
440 ** WNOHANG and WUNTRACED are exported.
441 ** SYSCALL-ERROR now also provides the name of the failing system call.
442 * enhancement: --script improvements:
443 ** errors on standard input, output, and error streams are handled and
444 cause scripts to exit silently, making them easier to use in shell
446 ** backtraces from scripts now go to standard error instead of the
447 terminal even if one is available.
448 ** --script can be an argument, causing the script to be loaded from
450 * enhancement: MAKE-ALIEN-STRING provides an easy way to transport lisp
451 strings to foreign memory.
452 * enhancement: (SETF GC-LOGFILE) allows logging garbage collections to
453 a file, making it easier to understand heap dynamics.
454 * optimization: using a &REST argument only in APPLY or VALUES-LIST calls
455 allows the compiler to automatically elide rest-list allocation so long as
456 the call sites are in functions that the compiler knows cannot escape.
458 * optimization: CALL-NEXT-METHOD using explicit arguments is faster,
459 especially in safe code when none of the required arguments have changed
461 * bug fix: blocking reads from FIFOs created by RUN-PROGRAM were
462 uninterruptible, as well as blocking reads from socket streams created
463 with for which :SERVE-EVENTS NIL. (regression from 1.0.42.43)
464 * bug fix: SET-SYNTAX-FROM-CHAR now removes dispatch-macro character syntax
465 from the to-char if the from-char is not a dispatch-macro character.
466 * bug fix: references to undefined variables in function calls that are
467 optimized away now signal a runtime error. (lp#722734)
468 * bug fix: miscompilation of MULTIPLE-VALUE-CALL when asserting derived
469 types from a function defined in the same file. (regression from
471 * bug fix: TRULY-THE forms are now macroexpandable and setf-expandable.
473 * bug fix: spurious errors during QUIT when standard streams were closed.
475 changes in sbcl-1.0.48 relative to sbcl-1.0.47:
476 * incompatible change: SB!KERNEL:INSTANCE-LAMBDA, deprecated for over five
477 years, is now no longer supported.
478 * enhancement: read() and write() have been added to SB-POSIX.
479 * enhancement: types of DEFSTRUCT constructors are proclaimed more
480 accurately, allowing better typechecking of call-sites.
481 * enhancement: errors during compile-time-too processing (i.e. EVAL-WHEN)
482 are no longer caught. (reverted to pre 1.0.34 behaviour)
483 * optimization: slightly faster ISQRT. (lp#713343)
484 * bug fix: better support for Solaris /bin/sh in sh-based tests.
485 * bug fix: TRACE behaves better when attempting to trace undefined
486 functions. (lp#740717)
487 * bug fix: missed optimizations for (FUNCALL (LAMBDA ...) ...) in comparison
488 to (FUNCALL #'(LAMBDA ...) ...).
489 * bug fix: ((LAMBDA ...) ...) forms with invalid argument counts resulted in
490 a compile-time error. (lp#720382)
491 * bug fix: forms such as (FUNCALL (FUNCTION NAME OOPS) ...) were compiled
493 * bug fix: less verbose source forms for functions from EVAL. (lp#747485)
494 * bug fix: sense of SLOT-BOUNDP-USING-CLASS was inverted in a MAKE-INSTANCE
495 optimization. (regression from 1.0.45.18/1.0.46.15)
496 * bug fix: package locks did not protects against compile-time side-effects
497 of DEFUN. (lp#675584)
498 * bug fix: --dynamic-space-size argument is validated more carefully.
500 * bug fix: memory fault from printing a malformed simple-condition.
502 * bug fix: redefining classes so that slot-definition classes change now
503 engages the obsolete instance protocol. (lp#766271)
504 * bug fix: constant improper lists could break source coverage recording.
506 * bug fix: compiling calls to eg. MEMBER with massive constant list arguments
509 changes in sbcl-1.0.47 relative to sbcl-1.0.46:
510 * bug fix: fix mach port rights leaks in mach exception handling code on
511 darwin/x86 and /x86-64. (thanks to Willem Oudshoorn for motivation and the
513 * enhancement: --script muffles style-warnings and compiler notes. (lp#677779)
514 * enhancement: redefinition warnings for macros from different files. (lp#434657)
515 * enhancement: better MACHINE-VERSION on Darwin x86 and x86-64. (lp#668332)
516 * enhancement: (FORMAT "foo" ...) and similar signal a compile-time warning. (lp#327223)
517 * enhancement: no more "in: LAMBDA NIL" messages from the compiler for forms
518 processed using EVAL -- now the appropriate toplevel form is reported instead.
519 * enhancement: more legible style-warnings for inappropriate IGNORE and IGNORABLE
520 declarations. (lp#726331)
521 * enhancement: :NOT-NULL option has been added to alien C-STRING type to indicate
522 that NIL/NULL is excluded from the type.
523 * enhancement: SB-INTROSPECT:MAP-ROOT allows mapping over pointers contained in
525 * optimization: SLOT-VALUE &co are faster in the presence of SLOT-VALUE-USING-CLASS
527 * optimization: core startup time is reduced by 30% on x86-64. (lp#557357)
528 * bug fix: SB-DEBUG:BACKTRACE-AS-LIST guards against potentially leaking
529 stack-allocated values out of their dynamic-extent. (lp#310175)
530 * bug fix: attempts to use SB-SPROF for wallclock profiling on threaded
531 x86-64 builds caused a type-error.
532 * bug fix: calling COMPILE with something else than a lambda-expression as the
533 second argument reports a more sensible error. (lp#718905)
534 * bug fix: invalid combinations of :PREDICATE and :TYPE options in DEFSTRUCT
535 are detected. (lp#520607)
536 * bug fix: constant keyword argument checking didn't take :ALLOW-OTHER-KEYS
538 * bug fix: SLOT-BOUNDP information is correct during MAKE-INSTANCE in the
539 presence of (SETF SLOT-VALUE-USING-CLASS) and SLOT-BOUNDP-USING-CLASS
540 methods. (regression from 1.0.45.18)
541 * bug fix: INITIALIZE-INSTANCE :AROUND methods supplying initargs via
542 CALL-NEXT-METHOD work correctly. (regression from 1.0.45.19)
543 * bug fix: several foreign functions accepting string also accepted NIL and
544 consequently caused a memory fault at 0 now signal a type-error instead.
546 * bug fix: under rare circumstances, constraint propagation could rewrite a
547 variable reference to refer to a variable not in scope, causing an error
548 during physical environment analysis when attempting to close over the
549 variable. (lp#551227)
550 * bug fix: SIMPLE-CONDITION :FORMAT-CONTROL defaults to NIL.
552 changes in sbcl-1.0.46 relative to sbcl-1.0.45:
553 * enhancement: largefile support on Solaris.
554 * enhancement: SB-PROFILE:REPORT now supports :LIMIT and :PRINT-NO-CALL-LIST
555 arguments (lp#710017)
556 * enhancement: SB-PCL:+SLOT-UNBOUND+ is exported, making it possible to
557 distinguish unbound instance slots when using STANDARD-INSTANCE-ACCESS
559 * optimization: ERROR and CERROR are approximately 5 times faster.
560 * optimization: optimized constructors are used for MAKE-INSTANCE of classes
561 with applicable non-standard (SETF SLOT-VALUE-USING-CLASS),
562 SLOT-BOUNDP-USING-CLASS, and INITIALIZE-INSTANCE :AROUND methods, speeding
563 up instance creation in those cases.
564 * optimization: arithmetic operations with multiple constant arguments in now
565 have them reduced at compile-time. (lp#676414)
566 * optimization: determining current character position on string-streams for
567 pretty-printing was overly slow.
568 * bug fix: local tail calls to DYNAMIC-EXTENT functions can no longer cause
569 lifetime analysis to overwrite closed-over variables (lp#681092).
570 * bug fix: encoding errors from some multibyte external formats such as EUC-JP
571 were not handled correctly (lp#713063).
572 * bug fix: printing waitqueue objects without setting *PRINT-CIRCLE* to T is now
574 * bug fix: Solaris/x86-64 wasn't getting built with lutex support by
575 mistake. (lp#667297).
576 * bug fix: CONSTANTLY generated functions had bogus lambda-lists. (lp#713626)
577 * bug fix: RUN-PROGRAM :PTY option was racy on OpenBSD. (lp#669485)
578 * bug fix: UNINTERN takes a symbol, not a symbol designator -- could previously
579 unintern the wrong symbol with the same name. (lp#693796)
580 * bug fix: COPY-PPRINT-DISPATCH always has access to a pristine table,
581 making it possible to restore the initial table if it has been messed up.
584 changes in sbcl-1.0.45 relative to sbcl-1.0.44:
585 * enhancement: ~/ and ~user/ are treated specially in pathnames.
586 Refer to documentation for details.
587 * enhancement: ASDF has been updated to version 2.010.
588 * optimization: mutated closed-over variables that are only accessed by
589 DYNAMIC-EXTENT closures (currently only FLET and LABELS functions
590 declared to be DYNAMIC-EXTENT) are stored directly in their containing
591 stack frame, rather than allocating a VALUE-CELL (lp#586103).
592 * optimization: UNWIND-PROTECT cleanup functions are now declared
594 * bug fix: backtracing function with &REST arguments now shows the full
595 argument list. (lp#310173)
596 * bug fix: return types for functions with complex lambda-lists are now
597 derived properly (lp#384892)
598 * bug fix: when SPEED > SPACE compiling CONCATENATE 'STRING with constant
599 long string arguments slowed the compiler down to a crawl.
600 * bug fix: closure VALUE-CELLs are no longer stack-allocated (lp#308934).
601 * bug fix: non-standard MAKE-METHOD-LAMBDA methods could break RETURN-FROM
602 in the DEFMETHOD body.
603 * bug fix: #<SB-C::DEFINED-FUN ...> should no longer appear in compiler
604 messages, being instead replaced with the corresponding function name.
605 * bug fix: don't derive overly complex unions of numeric types for arithmetic
606 operators. (lp#309448)
608 changes in sbcl-1.0.44 relative to sbcl-1.0.43:
609 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
610 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
611 * enhancement: ALLOCATION-INFORMATION also provides the page the object
613 * enhancement: default dynamic-space size can be configured at build-time
614 without touching source, using the --dynamic-space-size argument to make.sh.
615 * enhancement: DESCRIBE recognizes symbols naming optimization policy
616 qualities, and mentions ALWAYS-BOUND declarations.
617 * enhancement: ATOMIC-INCF now supports AREF of (SIMPLE-ARRAY SB-EXT:WORD (*))
619 * enhancement: ASDF has been updated to 2.009.
620 * enhancement: the system detects known type-erros in calls better,
621 signalling a full warning about violated proclaimed FTYPEs and violations
622 of derived FTYPEs within the same file, including self-calls.
623 * enhancement: new function: SB-EXT:DELETE-DIRECTORY is now provided.
624 * optimization: constant-folding exploits numeric and character types, in
625 addition member types.
626 * optimization: numeric, character and member types that are inhabited by
627 exactly one value are tested with EQL.
628 * optimization: more conditional branches are eliminated during IR1.
629 Branches are simplified before performing if/if-conversion, and simple
630 equivalent branches (that only read the same constant or variable) are
632 * improvements to the Windows port:
633 ** change: canonical unparsing form for pathname namestrings now uses / as
634 directory separator. NATIVE-NAMESTRING still uses \ as the separator.
635 ** bug fix: stackoverwriting due to incorrect usage of PeekConsoleInput
636 on Windows. (thanks to Kalyanov Dmitry)
637 ** bug fix: build now works on cygwin with GCC 4.x installed. (thanks to
639 ** bug fix: run-sbcl.sh now works on Cygwin. (thanks to Kalyanov Dmitry)
640 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
641 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
642 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
644 * bug fix: interrupts arriving during CL:OPEN caused an error.
645 * bug fix: overeager character buffering could cause input to block
646 spuriously when reading from a pipe (lp#643686)
647 * bug fix: more efficient timer expiry should avoid starvation on systems
648 where number of SIGALRMs per second is restricted. (lp#375515)
649 * bug fix: non-unicode builds no longer fail (broken since 1.0.36.15).
650 * bug fix: compile-times no longer scale linearly with the size of
651 quoted lists in source-code. (lp#654289)
652 * bug fix: better errors for unknown external-formats in OPEN. (lp#561974)
653 * bug fix: DEBUG>SPEED no longer degrades ALIEN-FUNCALL performance quite
654 so badly. (lp#654485)
655 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCES-BY-NAME no longer signals
656 an error for eg. STRUCTURE. (lp#458015)
657 * bug fix: LOOP WITH NIL = ... signalled an unused variable style-warning.
658 (lp#613871, thanks to Roman Marynchak)
659 * bug fix: more reliable &REST list type derivation. (lp#655203)
660 * bug fix: PPRINT-LOGICAL-BLOCK multiply-evaluated :PER-LINE-PREFIX,
661 and issued pointles code-deletion notes for it, :PREFIX, and :SUFFIX.
662 * bug fix: the compiler didn't utilize the proclaimed ftype for functions
663 also declared NOTINLINE. (lp#655581)
664 * bug fix: the compiler could attempt to emit constant left shifts of
665 greater value than n-word-bits. (lp#309063)
666 * bug fix: (SETF SYMBOL-FUNCTION) and (SETF FDEFINITION) clear derived
667 type information for the function being set. (lp#659220)
668 * bug fix: the system used to signal bogus STYLE-WARNINGs when functions
669 containing self-calls were recompiled with a new signature, and failed
670 to warn when a self-call using the old signature was left in. (lp#655126)
671 * bug fix: incorrect FILE-POSITION on streams opened using :EXTERNAL-FORMAT
672 :DEFAULT when the default external had character size other than 8 bits.
674 * bug fix: derived types of functions in the same file were implicitly
675 trusted, leading to potential heap corruption when those function were
676 defined incompatibly. (lp#657499)
677 * bug fix: existing ASDF source registries are ignored when building
679 * bug fix: short-form DEFSETF checks that the second argument is a symbol
680 (lp#655824, thanks to Roman Marynchak)
681 * bug fix: (SETF MACRO-FUNCTION) clobbered macro-definitions before
682 package-lock violation was detected. (lp#660752)
683 * bug fix: the system can store different docstrings for a single function
684 under different names. (lp#661631, regression from 1.0.29.24)
685 * bug fix: source-locations of DEFGENERIC forms weren't getting recorded
686 properly. (lp#384801)
687 * bug fix: (COERCE X '(SIMPLE-VECTOR 5)) and similar coercions to vectors
688 of specified length could confuse the type derivation in unsafe code.
690 * bug fix: SB-POSIX:FORK now signals an error if an attempt to
691 fork with multiple Lisp threads running is made on every platform,
692 not just Darwin. (lp#451111)
693 * bug fix: SB-BSD-SOCKETS and SB-SIMPLE-STREAMS could leave stale finalizers
694 around when core was saved, which could cause undefined behaviour when the
696 * bug fix: Allow UNTRACE of functions that are no longer defined
697 (lp#667657, thanks to Attila Lendvai)
698 * bug fix: MAKE-ARRAY calls with invalid keyword argument lists now signal a
699 compile-time warning (lp#664373, thanks to Stas Boukarev)
701 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
702 * incompatible change: FD-STREAMS no longer participate in the serve-event
703 event-loop by default. (lp#316072)
704 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
705 affects streams from CL:OPEN.
706 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
707 default, but this is liable to change: applications needing serve-event
708 for socket streams should explicitly request it using :SERVE-EVENTS T
710 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
712 * enhancement: CLOS effective method functions and defclass slot typechecking
713 function now have debug names for use in backtraces and profiles.
714 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
716 * enhancement: symbols are printed using fully qualified names in several
717 error and warning messages which are often associated with package
718 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
719 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
720 thanks to Andrew Golding)
721 * bug fix: reading /proc files on Linux works. (lp#425199)
722 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
724 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
725 breaking code that tried to write the value of a printer control variable.
726 (lp#581564, thanks to Stas Boukarev)
727 * bug fix: WRITE compiler macro did not handle output stream designators
728 correctly. (lp#598374, thanks to Stas Boukarev)
729 * bug fix: better availability of names of foreign functions in backtraces
730 on Linux. (lp#626962, thanks to Stas Boukarev)
731 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
732 lp#627581, thanks to Josh Elsasser and Jim Wise)
733 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
734 thanks to Josh Elsasser)
735 * bug fix: using aliases for builtin classes as defmethod specializers
736 without adding DEFTYPEs for them works. (lp#618387)
737 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
739 * bug fix: legally dynamic-extent lists and vectors used as
740 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
741 * bug fix: inline-expansion creating references to dead lambda-variables
742 (lp#454681, thanks to Alexey Dejneka)
743 * bug fix: better error message for bogus numerical arguments to RANDOM.
744 (lp#598986, thanks to Stas Boukarev)
745 * bug fix: the compiler occasionally inlined references from incompatible
746 environments occurs. (lp#308951)
747 * bug fix: the compiler threw an error when trying to compile a local
748 function (labels or flet) known to take a specialized complex argument.
749 (not in launchpad, reported by sykopomp in #lispgames)
750 * bug fix: package-locks failed to protect against compile-time effects of
751 DEFUN when the symbol previously had a macro definition. (lp#576637)
752 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
753 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
754 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
755 * bug fix: evaluation in debugger REPL works using the global context when
756 in frames that do not have sufficient debug information.
757 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
759 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
761 * bug fix: interrupt taking longer than the requested period caused SLEEP
762 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
764 changes in sbcl-1.0.42 relative to sbcl-1.0.41
766 ** Cross-compilation host is now specified to make.sh using
767 command-line argument --xc-host=<command> instead of a positional
768 argument. (thanks to Daniel Herring)
769 ** Install location can be specified to make.sh using command-line
770 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
771 * optimization: The default implementation of
772 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
773 * enhancement: Explicit memory barrier operations are now available for use
774 by multithreaded code. See documentation for details.
775 * enhancement: Experimental support for threading on Linux/PPC.
776 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
777 * bug fix: EXPT signals an error if first argument is a zero and second
778 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
779 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
780 (lp#576594, thanks to Roman Marynchak)
781 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
782 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
784 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
785 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
786 cached, leading to many fewer expensive calls to
787 COMPUTE-APPLICABLE-METHODS.
788 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
789 CLASS argument, search for and call an appropriate optimized ctor function
791 * bug fix: WRITE always returns the correct value.
793 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
794 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
795 * bug fix: Name conflicts between symbols passed as arguments to a single
796 call to IMPORT no longer add multiple symbols with the same name to the
797 package (detectable via DO-SYMBOLS).
798 * bug fix: support building without the dlshim on darwin x86 and x86-64
800 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
802 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
803 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
805 * bug fix: linkage-table entries on PPC now no longer overflow their
806 space allocation (potentially causing crashes if they are written out
808 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
809 platforms, preventing the GC from seeing stale pointers on the control
810 stack in subsequent GCs (which would, and does, break invariants).
811 * bug fix: 32-bit unicode external formats now work on big-endian systems.
812 * bug fix: Literal characters with code points greater than about 32767
813 now work on PPC UNICODE builds.
814 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
815 high order bits are explicitly cleared out. In some contrived situations,
816 this could lead to wrong results in mixed real/complex float arithmetic.
817 * bug fix: Fix function/macro redefinition warnings when building with
818 clisp. (lp#576787, thanks to Josh Elsasser)
819 * new platform: experimental support for ppc/openbsd (thanks to Josh
821 * bug fix: Floating-point traps now work on ppc/linux.
823 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
824 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
825 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
826 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
827 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
828 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
829 SB-THREAD:GRAB-MUTEX.
830 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
831 contain additional data structures and tools for concurrent programming;
832 at the moment it contains a lock-free queue, and a lock-free mailbox
834 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
835 GET-MUTEX but takes &key rather than &optional parameters. Also added
836 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
838 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
839 SB-THREAD:WAIT-ON-SEMAPHORE.
840 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
842 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
843 conditions to defer the deadline for forever.
844 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
846 * enhancement: errors from NO-APPLICABLE-METHOD and
847 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
848 generic function call.
849 * enhancement: SB-BSD-SOCKET improvements
850 ** sockets and socket streams now have a more informative printed
851 representation based on the corresponding SOCKET-NAME and
853 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
855 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
856 CL:CLOSE when appropriate, and no longer disassociates the stream
857 from the socket if close failed. (lp#543951)
858 * improvements to the instrumenting profiler
859 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
860 ** optimization: counters no longer use locks for the overflow mode.
861 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
862 incurred an off-by-one miscount.
863 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
864 * enhancement: improved DEFMETHOD pretty-printing.
865 * enhancement: perform range reduction when arguments are too large for
866 x87's transcendentals (instead of returning 0). (lp#327192)
867 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
868 some of CL-PPCRE's macros. (lp#570079)
869 * enhancement: our machine code is slightly less hostile to valgrind on
871 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
872 to Robert Swindells and Aleksej Saushev)
873 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
874 * bug fix: a rare case of startup-time page table corruption.
875 * bug fix: a semaphore with multiple waiters and some of them unwinding due
876 to timeouts could be left in an inconsistent state.
877 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
878 * bug fix: misoptimization of multiplication by one in
879 (SB-C::FLOAT-ACCURACY 0) policies.
880 * bug fix: miscounts in SB-PROFILE.
881 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
882 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
883 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
884 up itself" (March 2010) for further details.
885 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
886 against length of the list if the element is found before the specified
887 END is reached. (thanks to Alec Berryman, lp#554385)
888 * bug fix: errors signalled during package graph modification no longer
889 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
890 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
891 :SB-DOC feature. (lp#552564)
892 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
893 * bug fix: more robust runtime executable path detection. (lp#375549)
894 * bug fix: GCD always returns positive values. (lp#413680)
895 * bug fix: Converting division to multiplication by reciprocal handles
897 * bug fix: We were too eager in eliding range reduction tests on x87.
898 The maximal magnitude is 2^63, not 2^64.
899 * bug fix: Transforms for TRUNCATE don't die when the result is completely
901 * bug fix: Maybe restore buildability on Alpha.
902 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
904 * bug fix: RANDOM-STATE can be printed readably again.
905 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
906 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
907 types) could result in type mismatches during compilation.
909 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
910 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
911 stack frame thrown from.
912 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
913 compiler optimization qualities inside dynamic extent of its body.
914 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
915 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
917 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
918 constraint propgation, allowing better compilation eg. when used to
919 access structures with WITH-SLOTS. (lp#520366)
920 * optimization: the compiler is now more aware of the type of the underlying
921 storage vector for multidimensional simple arrays resulting in better code
922 for accessing such arrays.
923 * optimization: passing NIL as the environment argument to TYPEP no longer
924 inhibits optimizing it. (lp#309788)
925 * optimization: more efficient register usage when handling single-float
926 arguments on x86-64. (thanks to Lutz Euler)
927 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
928 pre-allocated temporary vectors. (lp#496249)
929 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
930 in :INITIAL-CONTENTS. (lp#523612)
931 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
932 functions. (lp#524707)
933 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
934 WITH-SLOTS usages during compilation.
935 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
936 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
937 all x86oid platforms with :UD2-BREAKPOINTS target feature.
938 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
939 instruction (tested on x86oid linux with ud2-breakpoints).
940 * bug fix: slam.sh now works on win32.
941 * bug fix: better differences of numeric types. (lp#309124)
942 * bug fix: arrays declared intersection and union types can have their
943 upgraded element type derived. (lp#316078)
944 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
945 threads started during profiling. (lp#472499)
946 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
948 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
949 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
950 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
951 values instead of signaling an error. (lp#309093)
952 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
954 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
955 declarations (lp#497321)
956 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
957 and failed to detect circular lists (lp#452008)
958 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
960 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
961 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
962 due to it, so that handlers can run.
963 * bug fix: reparsing undefined types if they have become defined since
965 * bug fix: missing &REST type in a proclamation for a function with both
966 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
967 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
968 expanded calls (lp#542174)
969 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
970 than just at toplevel form.
972 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
973 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
974 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
975 but work on type specifiers.
976 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
977 to name a type specifier.
978 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
979 specifier is valid where "valid" basically means "would be accepted as
980 second argument of TYPEP".
981 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
982 returns the function's declared, or derived FTYPE.
983 * new feature: SB-POSIX now supports accessing the d_ino member of
984 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
985 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
986 provide for seeding a RANDOM-STATE object with user-provided data or
987 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
988 attempt to initialize the returned state from the operating system's
989 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
990 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
991 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
992 * bug fix: Fix grammar and style issues for the docstrings of
993 printer-related variables and functions. (Thanks to mon_key; launchpad
995 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
997 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
998 in a row even though a handler defered the deadline long into the
1000 * bug fix: A deadline handler was run without interrupts enabled for a
1001 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
1002 in infinitely spinning, non-killable threads.
1003 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
1004 before reaching the erring stack frame.
1005 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
1006 real power. (launchpad bug lp#525949)
1007 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
1008 GENCGC platforms. (launchpad bug lp#529014)
1009 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
1010 (launchpad bug lp#525916)
1011 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
1012 (Thanks to Robert Goldman)
1014 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
1015 * optimization: ROUND with a single single-float or double-float argument
1016 is properly inlined when possible.
1017 * optimization: Slightly better code is generated for integer<->float
1018 conversions and for single-float<->double-float conversions on x86-64.
1019 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
1020 code for 32-bit and 64-bit rotations on x86-64.
1021 * bug fix: The install script changes the ownership of directories as well
1022 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
1023 launchpad bug lp#508485)
1024 * bug fix: TRUNCATE with a single single-float or double-float argument is
1025 properly inlined when possible. (launchpad bug lp#489388)
1026 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
1027 no longer causes a compiler error on x86 and ppc.
1028 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
1029 always relative to *READTABLE* rather than the passed argument.
1031 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
1032 * minor incompatible change: threading support is now enabled by default
1034 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
1036 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
1037 are now caught and reported just like errors during macroexpansion.
1038 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
1039 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
1040 * enhancement: ASDF systems can now depends on SB-QUEUE.
1041 * fixes and improvements related to Unicode and external formats:
1042 ** bug fix: error handling and restart usage in the ucs-2 external format
1044 ** there is now an implementation of the ucs-4 external format.
1045 ** the utf-16 and utf-32 external formats are supported.
1046 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
1047 in the environment. setenv() and unsetenv() are also provided. (reported by
1048 Fare Rideau; launchpad bug lp#460455)
1049 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
1050 loading. This ensures sensible errors for .FASL files from other
1051 implementations on case-insensitive filesystems. (reported by Willem
1052 Broekema; launchpad bug lp#489417)
1053 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
1054 Willem Broekema; launchpad bug lp#489698).
1055 * bug fix: some minor code rearrangements to reenable warning-free building
1056 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
1057 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
1059 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
1062 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
1063 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
1064 * improvement: support O_LARGEFILE access to files larger than 2GB on
1065 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
1066 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
1067 definitions for methods specializing on the passed class itself.
1068 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
1069 definitions for methods specializing on the passed class itself, or on
1071 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
1072 about itself during the build (e.g. for M-? in Slime), if this flag is
1073 enabled in customize-target-features.lisp. This will increase the core
1074 size by about 5-6mb, though, so it's mostly interesting to SBCL
1076 * new feature: various GENCGC tuning parameters have been experimentally
1077 documented and exported from SB-EXT. See documentation for details.
1078 * fixes and improvements related to Unicode and external formats:
1079 ** the Unicode character database has been upgraded to the
1080 Unicode 5.2 standard, giving names and properties to a number of new
1081 characters, and providing a few extra characters with case
1083 ** improvement: restarts for providing replacement input/output on coding
1084 errors for fd-stream external formats.
1085 ** improvement: where :<encoding> is a keyword corresponding to an
1086 external format the system supports, it is now possible to specify
1087 (:<encoding> :replacement <character>) as an external format which will
1088 automatically substitute <character> on encoding or decoding errors for
1089 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
1091 ** improvement: the file streams underlying the standard streams (such as
1092 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
1093 which uses the replacement mechanism to handle encoding errors,
1094 preventing various infinite error chains and unrecoverable I/O
1096 ** minor incompatible change: the utf-8 external format now correctly
1097 refuses to encode Lisp characters in the surrogate range (char-codes
1098 between #xd800 and #xdfff).
1099 ** fix a typo preventing conversion of strings into octet vectors
1100 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
1102 ** fix a bug in the octet multibyte handling of decoding errors and the
1103 USE-VALUE restart. (launchpad bug lp#314939)
1104 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
1105 restart on fd-stream decoding errors.
1106 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
1107 error is near the end of file.
1108 ** fix a double-error case in unibyte octet conversions, when the first
1109 use of USE-VALUE is ignored.
1110 ** fix bugs in handling of undefined code points in unibyte encodings.
1111 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
1112 streams after an UNREAD-CHAR.
1113 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
1114 object is allocated in a boxed region of dynamic space.
1115 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
1116 fork with multiple Lisp threads running is made, instead of going
1117 ahead with unpredictable consequences. (reported by Leslie Polzer)
1118 * bug fix: uses of slot accessors on specialized method parameters within
1119 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
1120 error while finalizing the class. This fix may cause classes with slot
1121 accessors to be finalized later than previously. (reported by Lars Rune
1122 Nøstdal; launchpad bug lp#473699)
1123 * bug fix: restore buildability on the MIPS platform. (regression from
1124 1.0.30.38, reported by Samium Gromoff)
1125 * bug fix: inspecting closures is less likely to fail with a type error.
1126 * bug fix: no timer starvation when setting the system clock back.
1127 (launchpad bug lp#460283)
1128 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
1129 standard pprint dispatch table as specified by CLHS.
1130 * bug fix: give CLISP a hint about a type declaration to enable it to build
1131 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
1133 * bug fix: correctly dump literal objects in defaulting forms of arglists.
1134 (reported by Attila Lendvai; launchpad bug lp#310132)
1135 * bug fix: distinguish in type specifiers between arrays that might be
1136 complex and arrays that are definitely complex. (launchpad bug lp#309129)
1137 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
1138 type. (reported by Levente Mészáros; launchpad bug lp#485972)
1139 * bug fix: setting the value of a symbol-macro within a method in the
1140 presence of type declarations works properly again. (reported by Iban
1141 Hatchondo; launchpad bug lp#485019)
1143 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
1144 * optimization: faster FIND and POSITION on strings of unknown element type
1145 in high SPEED policies. (thanks to Karol Swietlicki)
1146 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
1148 * improvement: better error signalling for bogus parameter specializer names
1149 in DEFMETHOD forms (reported by Pluijzer)
1150 * bug fix: DELETE-FILE once again works on logical pathnames (regression
1152 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
1154 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
1155 removes previous default initargs (reported by Lars Rune Nøstdal and
1157 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
1158 lambda-lists. (reported by Peter Seibel)
1159 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
1160 correctly when starting from an executable core without saved runtime
1161 options (reported by Faré Rideau, thanks to Zach Beane)
1162 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
1163 an optimization note instead. (reported by Martin Cracauer)
1164 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
1165 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
1166 new process group if it doesn't need to share stdin with the sbcl
1167 process. (thanks to Leslie Polzer)
1168 * bug fix: SATISFIES could be misoptimized to refer to a local function.
1169 (reported by Stanislaw Halik)
1171 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
1172 * improvement: stack allocation is should now be possible in all nested
1173 inlining cases: failure to stack allocate when equivalent code is manually
1174 open coded is now considered a bug.
1175 * improvements related to Unicode:
1176 ** the Unicode character database has been upgraded to the
1177 Unicode 5.1 standard, giving names and properties to a number of new
1178 characters, and providing a few extra characters with case
1180 ** the system now recognizes and produces names for Unicode Hangul
1181 syllable characters.
1182 ** the EBCDIC-US external-format is now supported for octet operations
1183 (as well as for stream operations).
1184 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
1185 be used to output toplevel compile-time effects into a separate .CFASL
1187 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
1188 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
1190 * optimization: TRUNCATE on known single- and double-floats is upto 25%
1192 * optimization: division of floating point numbers by constants uses
1193 multiplication by reciprocal when an exact reciprocal exists.
1194 * optimization: multiplication of single- and double-floats floats by
1195 constant two has been optimized.
1196 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
1197 sufficient type information is available. (thanks to Leslie Polzer)
1198 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
1199 known structure objects are as efficient as defstruct generated accessors.
1200 * optimization: unused vector creation can now be optimized away.
1201 * improvement: ASDF systems can now depends on SB-INTROSPECT.
1202 * improvement: a STYLE-WARNING is signalled when a generic function
1203 clobbers an earlier FTYPE proclamation.
1204 * improvement: the compiler is able to track the effective type of
1205 generic function across method addition and removal even in the
1206 absence of an explicit DEFGENERIC.
1207 * improvement: DESCRIBE now reports on symbols naming undefined
1208 but assumed or declared function as well.
1209 * improvement: recompilation of systems using SB-GROVEL now works
1210 (thanks to Leslie Polzer)
1211 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
1212 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
1214 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
1215 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
1216 well as user defined declaration names.
1217 ** VARIABLE-INFORMATION is now aware of alien variables.
1218 * improvement: improved address space layout on OpenBSD (thanks to Josh
1220 * improvement: pretty-printing of various Lisp forms has been improved
1221 (thanks to Tobias Rittweiler)
1222 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
1223 unused were deleted in safe code. (reported by John Fremlin)
1224 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
1226 * bug fix: some out-of-line array predicates were missing (reported by
1228 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
1230 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
1231 (thanks to Larry D'Anna)
1232 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
1233 as well. (reported by Josh Elsasser)
1234 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
1235 leading to possible attempts to delete the same file twice. See docstring
1236 on DELETE-FILE for details. (reported by John Fremlin)
1237 * bug fix: DELETE-FILE once again deletes the file named by the pathname
1238 designator argument, rather than its truename. (reported by Luis
1240 * bug fix: the low-level debugger had 32-bit assumptions and was missing
1241 information about some array types. (thanks to Luis Oliveira)
1242 * bug fix: moderately complex combinations of inline expansions could
1243 be miscompiled if the result was declared to be dynamic extent.
1244 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
1245 form (+ <variable> <integer>) were miscompiled under certain
1247 * bug fix: in some cases no compiler note about failure to stack allocate
1248 was emitted, even if the objects were in fact heap allocated.
1249 * bug fix: minor violation of "otherwise inaccessible" rule for stack
1250 allocation could cause objects users might reasonably expect to
1251 be heap allocated to be stack allocated.
1252 * bug fix: DESCRIBE signalled an error for generic functions under
1253 certain circumstances. (thanks to Leslie Polzer)
1254 * bug fix: Fixed spelling of an error message.
1256 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
1257 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
1258 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
1259 of SB-THREAD:THREAD-ERROR-THREAD.
1260 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
1261 * new feature: docstrings for local and anonymous functions are no longer
1262 discarded. (thanks to Leslie Polzer)
1263 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
1264 values in other threads.
1265 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
1266 about object allocation.
1267 * optimization: division of a real float by a complex float is implemented
1268 with a specialised code sequence.
1269 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
1270 keywords is an order of magnitude faster.
1271 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
1272 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
1273 methods, and similarly for non-standard metaclass classes as long as there
1274 are no methods additional on MAKE-INSTANCE.
1275 * optimization: more efficient type-checks for FIXNUMs when the value
1276 is known to be a signed word on x86 and x86-64.
1277 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
1278 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
1280 * optimization: compiler is smarter about delegating argument type checks to
1282 * optimization: several character functions are now compiled somewhat more
1283 efficiently. (reported by Lynn Quam)
1284 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
1285 * improvement: less unsafe constant folding in floating point arithmetic,
1286 especially for mixed complex/real -float operations.
1287 * optimization: constant double and single floats are stored in native
1288 unboxed format on x86[-64].
1289 * optimization: smarter code for arithmetic operations with constant floats,
1290 complex floats, or integers on x86[-64].
1291 * optimization: smarter code for conjugate/multiplication of float complexes
1292 and abs/negate of floats on x86-64.
1293 * optimization: more efficient complex float and real float operations on
1295 * improvement: complex float division is slightly more stable.
1296 * improvement: DESCRIBE output has been reworked to be easier to read and
1297 contains more pertinent information.
1298 * improvement: failure to provide requested stack allocation compiler notes
1299 provided in all cases (requested stack allocation not happening without a
1300 note being issued is now considered a bug.)
1301 * bug fix: SB-POSIX exports the documented types and functions
1302 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
1303 types. (reported by "abhi")
1304 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
1305 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
1306 (thanks to Paul Khuong)
1307 * bug fix: looping around HANDLER-CASE could silently consume stack space
1308 on each iteration. (reported by "foobar")
1309 * bug fix: better error signalling when calls to functions seeking elements
1310 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
1311 (reported by Tobias Rittweiler)
1312 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
1313 directory components now works as it used to. (various prolems reported by
1314 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
1315 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
1316 (reported by Elliot Slaughter, thanks to Stas Boukarev)
1317 * bug fix: bogus undefined variable warnings from fopcompiled references to
1318 global variables. (thanks to Lars Rune Nøstdal)
1319 * bug fix: foreign function names should now appear in backtraces on
1320 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
1321 * bug fix: SETF compiler macro documentation strings are not discarded
1323 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
1324 (thanks to Alex Plotnick)
1325 * bug fix: SLEEP accepts large integer arguments, truncating them to
1326 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
1327 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
1328 * bug fix: compiler notes for expensive slot type checks could be emitted
1329 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
1331 changes in sbcl-1.0.29 relative to 1.0.28:
1332 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
1333 https://bugs.launchpad.net/sbcl
1334 Bugs can be reported directly there, or by sending email to
1335 sbcl-bugs@lists.sourceforge.net
1336 (no subscription required.)
1337 * minor incompatible change: under weak type checking policy integer
1338 types are weakened less aggressively.
1339 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
1340 allowed to return, which causes SBCL to quit with exit status 0. Previously
1341 if the function returned with a small integer return value, that value
1342 was accidentally reused as the exit status.
1343 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
1344 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
1345 :HASH-FUNCTION argument. Refer to user manual for details.
1346 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
1348 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
1349 microseconds since the Unix epoch on all platforms.
1350 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
1351 allows the compiler to safely elide boundedness checks for special
1353 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
1354 the symbol, prohibits both lexical and dynamic binding. This is mainly an
1355 efficiency measure for threaded platforms, but also valueable in
1357 * new feature: UNC pathnames are now understood by the system on Windows.
1358 * optimization: the compiler uses a specialized version of FILL when the
1359 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
1361 * optimization: accesses to potentially non-simple arrays where element type
1362 is known are 50% faster.
1363 * optimization: compiler now generates faster array typechecking code.
1364 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
1366 * optimization: multidimensional array accesses in the absence of type
1367 information regarding array rank are approximately 10% faster due to
1368 open coding of ARRAY-RANK.
1369 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
1370 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
1372 * optimization: result of call to VECTOR can now be stack allocated.
1373 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
1374 as long as the resulting array is one-dimensional and has a known
1375 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
1376 length of the list matches the known length of the vector does not
1377 allocate the list as an intermediate step. Ditto for VECTOR and simple
1379 * optimization: MAKE-ARRAY can now stack allocate in the presence of
1380 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
1381 known element type, and is known to be simple and one dimensional.
1382 * improvement: SBCL now emits a compiler note where stack allocation was
1383 requested but could not be provided (not in all cases, unfortunately)
1384 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
1385 * improvement: pretty-printing loop has been implemented properly. (thanks
1386 to Tobias Rittweiler)
1387 * documentation: CLOS slot typechecing policy has been documented.
1388 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
1389 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
1390 pointer, leading to memory faults. (thanks to Bart Botta)
1391 * bug fix: better floating point exception handling on x86/OpenBSD.
1392 (thanks to Josh Elsasser)
1393 * bug fix: exit status from QUIT when called under --script was lost
1394 (reported by Hubert Kauker)
1395 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
1396 same implementation of FILL to initialize the array, even if a more
1397 efficient one was available (reported by Stas Boukarev, thanks to
1399 * bug fix: potential miscompilation of array stack allocation on x86 and
1400 x86-64. (reported by Time Tossavainen)
1401 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
1402 result in their subforms being treated as top level forms. (reported by
1404 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
1405 than a machine register could leave garbage in the high bits of the
1406 result register (bug 316325).
1407 * bug fix: disable address space randomization Linux/x86-64 as well,
1408 not just x86-64. (reported by Ken Olum)
1409 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
1410 generate incorrect code.
1411 * bug fix: #201; type inference for CONS and ARRAY types could derive
1412 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
1413 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
1414 could not be assigned to or bound with PROGV. (reported by Lorenz
1416 * bug fix: the value of CL:- in the inspector was the previous expression
1417 evaluated rather than the expression being evaluated.
1418 * bug fix: constants can no longer be locally declared special.
1419 * bug fix: signals delivered to threads started from foreign land (read:
1420 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
1421 thread by blocking all signals and resignalling.
1422 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
1423 from :INITFORM, if any.
1425 changes in sbcl-1.0.28 relative to 1.0.27:
1426 * a number of bugs in cross-compilation have been fixed, with the ultimate
1427 result that building under (at least) clisp should be much more reliable.
1428 * minor incompatible changes: echo-streams now propagate unread-char to the
1429 underlying input stream, and no longer permit unreading more than one
1431 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
1432 frames, allowing for instance more reliable backtraces.
1433 * improvement: the debugger REPL can now reference lexical variables
1434 by name directly for code compiled with (DEBUG 3).
1435 * improvement: errors from malformed declarations now have better source
1436 paths associated with them. (thanks to Tobias Rittweiler)
1437 * optimization: faster local calls on x86/x86-64
1438 * bug fix: some error messages for out-of-bound array indexes confused the
1439 index and the bound. (thanks to Stas Boukarev)
1440 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
1442 * bug fix: running regressions tests in shells without OSTYPE set now works.
1443 (reported by Harald Hanche-Olsen)
1444 * bug fix: more robust static space exhaustion signalling from
1445 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
1446 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
1447 docstring away instead of storing it under names such as (LAMBDA (X)).
1448 (reported by Leslie Polzer)
1449 * bug fix: timers could go off in the wrong order, be delayed indefinitely
1450 (thanks to Ole Arndt for the patch)
1451 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
1452 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
1453 potentially-invalid effective methods in its cache.
1454 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
1455 instances as well (thanks to Paul Khuong)
1456 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
1457 SB-POSIX:WAITPID and their C equivalents.
1458 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
1460 changes in sbcl-1.0.27 relative to 1.0.26:
1461 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
1462 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
1463 * improvement: the system either recovers from stack exhaustion or dies
1464 properly as opposed to leaving the user uncertain of whether the handler
1465 trampled on some random memory next to the stack or having to rely on
1466 --lose-on-corruption (which is still a good idea to use in production
1467 because stack exhaustion can happen in signal handlers which will likely
1469 * bug fix: fix gc related interrupt handling bug on ppc (regression from
1470 1.0.25.37, reported by Harald Hanche-Olsen)
1471 * bug fix: work around signal delivery bug in darwin (regression from
1472 1.0.25.44, reported by Sidney Markowitz)
1473 * bug fix: fix ERROR leaking memory (reported by David Thompson)
1475 changes in sbcl-1.0.26 relative to 1.0.25:
1476 * incompatible change: an interruption (be it a function passed to
1477 INTERRUPT-THREAD or a timer function) runs in an environment where
1478 interrupts can be enabled. The interruption can use
1479 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
1480 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
1481 potentially running out of stack. Keep in mind that in the absence
1482 of WITHOUT-INTERRUPTS some potentially blocking operation such as
1483 acquiring a lock can enable interrupts.
1484 * incompatible change: GC-OFF and GC-ON are removed, as they were
1485 always unsafe. Use WITHOUT-GCING instead.
1486 * new feature: runtime option --disable-ldb
1487 * new feature: runtime option --lose-on-corruption to die at the
1488 slightest hint of possibly non-recoverable errors: running out of
1489 memory, stack, alien stack, binding stack, encountering a memory
1490 fault, etc. In the absence of --lose-on-corruption a warning is
1492 * enhancement: detect binding stack exhaustion
1493 * enhancement: detect alien stack exhaustion on x86/x86-64
1494 * improvement: generally more stable and reliable interrupt handling
1495 * improvement: there is a per thread interruption queue,
1496 interruptions are executed in order of arrival
1497 * improvement: a repeating timer reschedules itself when the it has
1498 finished, but expiration times are spaced equally. If an
1499 expiration time is in the past it will trigger after a short grace
1500 period that may give a chance to other things to run.
1501 * optimization: slightly faster gc on multithreaded builds
1502 * optimization: faster WITHOUT-GCING
1503 * bug fix: when JOIN-THREAD signals an error, do it when not holding
1504 important locks so that the debugger/handler doesn't produce
1505 recursive errors or deadlock.
1506 * bug fix: real-time signals are not used anymore, so no more
1507 hanging when the system wide real-time signal queue gets full.
1508 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
1510 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
1511 * bug fix: fix random memory faults related to interrupts on alpha
1512 * bug fix: fix random memory faults related to interrupts on sparc
1513 * bug fix: fix deadlocks related to starting threads
1514 * bug fix: fix deadlines on locks on futex platforms
1515 * bug fix: restore errno in signal handlers
1516 * bug fix: fix deadlocks related to hash tables
1517 * bug fix: fix deadlocks in pcl
1519 changes in sbcl-1.0.25 relative to 1.0.24:
1520 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
1521 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
1522 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
1523 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
1524 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
1525 better name and does not return values so stale on multiprocessor systems.
1526 Also, HOLDING-MUTEX-P was added for about the only sane usage of
1528 * improvement: unithread builds keep track of MUTEX-VALUE.
1529 * improvement: reading from a TWO-WAY-STREAM does not touch the output
1530 stream anymore making it thread safe to have a concurrent reader and
1531 a writer, for instance, in a pipe.
1532 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
1533 arguments, making compiler-macros for SETF-functions able to inspect
1534 their constant arguments.
1535 * improvement: COMPILE-FILE reports times with millisecond accuracy
1536 (thanks to Luis Oliveira)
1537 * optimization: CHAR-CODE type derivation has been improved, making
1538 TYPEP elimination on subtypes of CHARACTER work better. (reported
1539 by Tobias Rittweiler, patch by Paul Khuong)
1540 * bug fix: setting alien structure fields of type struct by value now
1541 computes the right offset for the memory copy.
1542 * bug fix: compilation problem involving inlined calls to aliens with
1543 result type VOID. (reported by Ken Olum)
1544 * bug fix: #235a; sequential inline expasion in different policies no
1545 longer reuses the functional from the previous expansion site.
1546 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
1547 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
1548 * bug fix: named ENUMs in multiply-referenced alien record types no longer
1549 cause an implied type redefinition. Regression from 1.0.21.29.
1550 * bug fix: sign-extension of small signed return values now works with C
1551 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
1552 * improvements to the Windows port:
1553 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
1554 Westfold, thanks to Rudi Schlatte)
1556 changes in sbcl-1.0.24 relative to 1.0.23:
1557 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
1558 vector of a multidimensional SIMPLE-ARRAY.
1559 * new feature: the system now signals a continuable error if standard
1560 readtable modification is attempted. (thanks to Tobias Rittweiler)
1561 * new feature: DIRECTORY has been extended with a non-standard keyword
1562 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
1563 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
1564 has been robustified and documented better. (thanks to Robert Goldman)
1565 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
1566 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
1567 * tradeoff: constant FORMAT control strings are now compiled unless
1568 SPACE > SPEED (previously only when SPEED > SPACE.)
1569 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
1571 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
1573 * bug fix: lexical type declarations are now correctly reported by
1574 SB-CLTL2. (reported by Larry D'Anna)
1575 * bug fix: STRING-TO-OCTETS did not handle :START properly when
1576 using UTF-8 as external format. (thanks to Luis Oliveira)
1577 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
1578 are signalled correctly. (thanks to Stas Boukarev)
1579 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
1580 designator. (thanks to Tobias Rittweiler)
1581 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
1582 designator, and returns T instead of the function. (thanks to
1584 * bug fix: direct superclasses of STANDARD-CLASS and
1585 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
1586 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
1587 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
1588 when no class with the named slot yet exists no longer causes a
1589 compile-time style-warning.
1590 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
1591 in safe code. (reported by Didier Verna)
1592 * bug fix: #430; nested structure constructors can stack allocate.
1593 * bug fix: on some 64-bit platforms dynamic space size was truncated
1594 to #xffff0000 bytes. (reported by Benjamin Lambert)
1595 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
1596 REPL unusable. (reported by Daniel Herring)
1597 * bug fix: return values of READ-SEQUENCE did not take :START into
1598 account on file streams, regressions since 1.0.12.22. (reported by
1599 Thomas Russ, patch by Paul Khuong)
1600 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
1601 method specializer used to confuse permuation vector optimization.
1602 * bug fix: system inserted bogus implicit type declarations for local
1603 special variables in DEFMETHOD bodies.
1604 * bug fix: #354; duplicated frames in backtraces due to
1605 non-tail-call-optimized XEPs to functions with return type NIL
1607 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
1608 initializes structure object slots according to DEFSTRUCT initforms,
1609 and DEFSTRUCT forms :INCLUDEind structure classes defined using
1610 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
1611 (reported by Bruno Haible and Stephen Wilson)
1612 * bug fix: #395; fill-pointer output streams used now support
1613 element-type BASE-CHAR as well.
1614 * bug fix: compiler error when attempting to derive return value of
1615 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
1617 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
1619 * bug fix: Mac OS X binaries should now be portable between Leopard
1622 changes in sbcl-1.0.23 relative to 1.0.22:
1623 * enhancement: when disassembling method functions, disassembly
1624 for the associated fast function is also produced.
1625 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
1627 * optimization: printing with *PRINT-PRETTY* true is now more
1628 efficient as long as the object being printed doesn't require
1629 special handling by the pretty printer.
1630 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
1631 now interact correctly with type declarations.
1632 * partial bug fix: PCL detects infinite recursion during wrapper
1633 validation. (thanks to Attila Lendvai)
1634 * bug fix: #426; nested function calls are inlined properly.
1635 Previously if FOO was an inline function, in calls of the form
1636 (FOO (FOO ...)) the outer call was not inlined.
1637 * bug fix: long long arguments passed in registers to alien
1638 functions on PowerPC Linux and NetBSD are now handled correctly
1639 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
1641 changes in sbcl-1.0.22 relative to 1.0.21:
1642 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
1643 for the shared object in the current directory, but passes the native
1644 namestring of the designated pathname to the operation system's shared
1645 object loading function as-it.
1646 * minor incompatible change: --disable-debugger toplevel option now takes
1647 effect before processing of initialization files and --eval or --load
1649 * new feature: new commandline argument: --script, which supports
1650 shebang lines. See documentation for details. (based on work by
1652 * new feature: SAVE-LISP-AND-DIE can save current values of
1653 --dynamic-space-size and --control-stack-size in the executable core,
1654 causing it to skip normal runtime option processing. See documentation
1655 for details. (thanks to Zach Beane)
1656 * enhancement: inoccous calls to EVAL or generic functions dispatching
1657 on subclasses of eg. STREAM no longer cause compiler notes to appear.
1658 * enhancement: the system no longer resignals errors from --load and
1659 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
1660 associated with the original error to be lost. (thanks to Ariel
1662 * enhancement: :DONT-SAVE keyword argument has been added to
1663 LOAD-SHARED-OBJECT for controlling interaction with
1664 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
1665 the effects of an earlier LOAD-SHARED-OBJECT call.
1666 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
1667 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
1668 provided. (reported by Cedric St-Jean)
1669 * bug fix: circularity handling in the reader did not treat raw
1670 structure slots correctly. (reported by Cedric St-Jean)
1671 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
1672 file descriptors when there were none.
1673 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
1674 was broken. (reporteed by Willem Broekema)
1675 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
1676 pathnames without a directory.
1677 * bug fix: COMPILE-FILE did not warn about undefined variable
1678 references at toplevel, and LOAD of the resulting fasl did
1679 not signal an error.
1680 * bug fix: functions with non-required arguments used to end up with
1681 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
1682 * bug fix: redefining a function with non-required arguments didn't
1683 update the system's knowledge about its call signature properly.
1684 * bug fix: fixed #431; incompatible alien record type redefinitions
1685 are detected and handled. (reported by Neil Haven)
1686 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
1687 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1689 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1690 after alien stack frames.
1691 * bug fix: strings passed to mk{s,d}temp lacked null termination
1693 changes in sbcl-1.0.21 relative to 1.0.20:
1694 * new feature: the compiler is able to track the effective type of a
1695 generic function across method addition and removal.
1696 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1697 appropriately typed structure slots without locking.
1698 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1699 information like those gathered by TIME using a programming-friendly
1701 * new feature: TIME reports time taken even if the form performs a
1702 non-local transfer of control.
1703 * enhancement: reduced conservativism on GENCGC platforms: on
1704 average 45% less pages pinned (measured from SBCL self build).
1705 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1706 mutate constant symbols or violate declaimed type of the symbol.
1707 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1708 sleeping on the semaphore in heavily contested semaphores.
1709 * bug fix: semaphores and condition variables were not interrupt
1711 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1712 owned by other threads anymore.
1713 * bug fix: FIND on lists called KEY outside the specified
1714 subsequence. (reported by budden)
1715 * bug fix: LOG doesn't use single-float intermediate results when
1716 given mixed integer and double-float arguments, leading to better
1717 precision. (reported by Bob Felts)
1718 * bug fix: LOG with base zero returned values of inconsistent type.
1720 changes in sbcl-1.0.20 relative to 1.0.19:
1721 * minor incompatible change: OPTIMIZE qualities
1722 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1723 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1724 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1725 * documentation: some slot access efficiency guidelines have been
1726 added to the user manual.
1727 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1728 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1729 as ASSOC and MEMEBER.
1730 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1731 to more efficient EQ-comparison versions more often.
1732 * optimization: enhanced derivation of DOLIST iteration variable type
1734 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1736 * optimization: runtime lookup of function definitions can be
1737 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1738 * optimization: compiler is able to derive the return type of
1739 (AREF (THE STRING X) Y) as being CHARACTER.
1740 * optimization: CLRHASH on empty hash-tables no longer does pointless
1741 work. (thanks to Alec Berryman)
1742 * optimization: REPLACE deftransforms don't punt when :START1 or
1744 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1745 no longer emits a code deletion note. (reported by Andrew
1747 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1748 functions with an odd number of &OPTIONAL arguments, a &REST
1749 argument, and one or more &KEY arguments at the call site.
1750 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1751 arguments appeared at call sites as well.
1752 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1753 READ-LINE &co can no longer read from them afterwards. (reported
1755 * bug fix: fixed #427: unused local aliens no longer cause compiler
1756 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1758 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1759 alien-stack leakage. (reported by Andy Hefner)
1760 * bug fix: PROGV signals an error when an attempt to violate declared
1761 type of a variable or bind a constant is made.
1762 * bug fix: SET signals an error when an attempt to violate declared
1763 type of a variable is made.
1764 * bug fix: restart computation during the execution of a restart
1765 test function no longer causes infinite recursion. (reported by
1767 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1768 signals an error. (thanks to Pierre Mai)
1769 * bug fix: EXPORT left symbol unexported in conflict situations.
1770 (thanks to Michael Weber)
1771 * bug fix: correctly handle name conflicts involving CL:NIL.
1772 (thanks to Michael Weber)
1773 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1774 conflicts arising from USEing package with conflicting symbols
1775 correctly. (thanks to Michael Weber)
1777 changes in sbcl-1.0.19 relative to 1.0.18:
1778 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1779 warnings that go otherwise unhandled will be muffled if they are
1780 of the type that's the value of this variable.
1781 * optimization: stack allocation is slightly more efficient on x86
1783 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1784 where a raw slot always is initialized using the initform whose
1785 type is not know sufficiently well a compile-time are now compiled
1786 correctly. (reported by John Morrison)
1787 * bug fix: compiler no longer makes erronous assumptions in the
1788 presence of non-foldable SATISFIES types.
1789 * bug fix: stack analysis missed cleanups of dynamic-extent
1790 arguments in non-let-converted calls to local functions.
1791 * improvements to the Windows port:
1792 ** adjusted address spaces for building on both Win32 and
1793 Win64. (thanks for John Connors)
1794 * fixed some bugs revealed by Paul Dietz' test suite:
1795 ** interval arithmetic during type derivation used inexact integer
1796 to single-float coercions.
1797 ** arithmetic operations involving large integers and single
1798 floats give the same results in compiled and interpreted code.
1799 ** deriving the result type of COERCE no longer signals an error
1800 if the derived type of the second argument is a MEMBER type
1801 containing invalid type specifiers.
1802 ** ADJOIN with constant NIL as second argument works correctly.
1803 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1805 changes in sbcl-1.0.18 relative to 1.0.17:
1806 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1807 profiles only the current thread.
1808 * minor incompatible change: changes to SYMBOL-VALUE of constants
1809 defined with DEFCONSTANT now signal an error.
1810 * enhancement: SB-SPROF now has support for wallclock profiling,
1811 and is also able to profile specific threads. REPORT output
1812 has also additional sorting options.
1813 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1815 * optimization: structure allocation has been improved
1816 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1817 ** out of line constructors are ~10% faster.
1818 ** inline constructors are ~15% faster.
1819 ** inline constructors are capable of dynamic extent allocation
1820 (generally on x86 and x86-64, in some cases on other platforms
1822 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1824 * optimization: file compiler is now able to coalesce non-circular
1825 lists, non-base strings, and bit-vectors. Additionally, constants
1826 are never referenced through SYMBOL-VALUE at runtime.
1827 * optimization: code defining methods on PRINT-OBJECT (and other
1828 generic functions in the COMMON-LISP package) now loads faster.
1829 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1831 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1832 fasl is now deleted. (reported by Attila Lendvai)
1833 * bug fix: READ-LINE always returned NIL for the last line in files.
1834 (reported by Yoshinori Tahara)
1835 * bug fix: more accurate disassembly annotations of foreign function
1836 calls. (thanks to Andy Hefner)
1837 * bug fix: trimming non-simple strings and non-string string
1838 designators when the there is nothing to trim works properly.
1839 (thanks to James Knight)
1840 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1841 (thanks to Travis Cross)
1842 * fixed some bugs revealed by Paul Dietz' test suite:
1843 ** NIL is a valid function name (regression at 1.0.13.38)
1844 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1845 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1846 fill pointers properly (regression at 1.0.12.23)
1847 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1848 displacement indices properly (regression at 1.0.12.23)
1850 changes in sbcl-1.0.17 relative to 1.0.16:
1851 * temporary regression: user code can no longer allocate closure
1852 variable storage on stack, due to bug 419 without explicitly
1853 requesting it. Please consult sbcl-devel for advice if you need to
1854 use this feature in the meanwhile.
1855 * new feature: runtime argument --control-stack-size can be used to
1856 adjust thread default control stack size.
1857 * enhancement: improved TIME output
1858 ** all times are reported using the measured accuracy (milliseconds
1859 for real and GC times, microseconds for everything else.)
1860 ** processor cycle counts on x86 and x86-64.
1861 ** interpreted forms are counted for both evaluator modes.
1862 ** number of lambdas converted by the compiler is reported.
1863 ** CPU percentage report (computed from real and total run time.)
1864 ** more comprehensive run time reporting, using a condenced format
1865 ** interperted form, lambda, and page fault counts are omitted
1867 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1869 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1870 * optimization: two argument forms of LAST are upto ~10% faster
1871 in normal SPEED policies.
1872 * optimization: NCONC no longer needs to heap cons its &REST list
1873 in normal SPEED policies.
1874 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1875 to Sidney Markowitz)
1876 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1877 regression since 1.0.9.1. (thanks to Eric Marsden)
1878 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1879 since 1.0.15.36. (thanks to Paul Khuong)
1880 * bug fix: LAST when always returned the whole list when given a bignum
1881 as the second argument.
1882 * bug fix: dynamic extent allocation of nested lists and vectors
1883 could leak to otherwise accessible parts.
1884 * bug fix: invalid optimization of heap-allocated alien variable
1886 * bug fix: fasl header checking is less vulnerable to different
1887 platform word lengths.
1888 * bug fix: more correct assembler syntax for GNU binutils
1889 2.18.50.0.4 support. (thanks to Marijn Schouten)
1890 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1892 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1893 declarations) successfully. (reported by Attila Lendvai)
1895 changes in sbcl-1.0.16 relative to 1.0.15:
1896 * minor incompatible change: revert the changes to sb-posix's error
1897 signaling added in 1.0.14.
1898 * minor incompatible change: change PROBE-FILE back to returning
1899 NIL whenever we can't get a truename, as was the case before 1.0.14.
1900 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1901 inherits from ERROR instead of just CONDITION.
1902 * new feature: SB-INTROSPECT can provide source locations for instances
1903 as well. (thanks to Tobias Rittweiler)
1904 * optimization: binding special variables now generates smaller code
1905 on threaded platforms.
1906 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1907 and cases where no :TEST is given but the compiler can infer that
1908 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1909 * optimization: better LOGNOT on fixnums.
1910 * optimization: modular arithmetic for a particular requested width
1911 is implemented using a tagged representation unless a better
1912 representation is available.
1913 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1914 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1915 for wellformedness and returns a specialized vector. (reported by
1916 Francois-Rene Rideau)
1917 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1918 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1919 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1920 unscheduling timer at the same time as another timer fires.
1921 * bug fix: don't reschedule timers for dead threads.
1922 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1923 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1924 bogus errors if select() was interrupted.
1925 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1927 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1928 * enhancement: cleaner backtraces for interactive interrupts, as
1929 well as other cases where the interesting frames used to be
1930 obscured by interrupt handling frames.
1931 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1932 now supported, and tracing a whole package using (TRACE "FOO") now
1933 traces SETF-functions as well.
1934 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1935 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1936 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1937 * unreadably printed representation of hash-tables now includes
1939 * bug fix: partially fixed #188: type propagation from assignments
1940 is now more efficient.
1941 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1942 'DOUBLE-FLOAT) are not flushable.
1943 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1944 full address of the object, and none of the tag bits.
1945 * bug fix: readably printing hash-tables now respects other printer
1946 control variables. (reported by Cedric St-Jean)
1947 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1948 keyword with MAKE-HASH-TABLE.
1949 * bug fix: export SB-POSIX:MKSTEMP.
1950 * bug fix: SORT was not interrupt safe.
1951 * bug fix: XREF accounts for the last node of each basic-block as
1953 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1954 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1955 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1956 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1957 create obsolete instances in the case of redefinition or
1958 obsoletion of a superclass. (thanks to Andy Hefner)
1959 * bug fix: Support for the Alpha architecture has been revived; it had
1960 suffered somewhat from lack of maintenance since sbcl-1.0.
1961 * improvements to the Windows port:
1962 ** The system detects the codepage to use at startup, instead of
1963 using the value from the saved core. (thanks to Kei Suzuki)
1965 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1966 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1967 (see documentation for details.)
1968 * revived support for OpenBSD (contributed by Josh Elsasser)
1969 * partially fixed bug #108: ROOM no longer suffers from occasional
1970 (AVER (SAP= CURRENT END)) failures.
1971 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1972 bodies no longer cause a WARNING to be signalled. (reported by
1974 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1975 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1976 the bug in TRUNCATE.) (reported by Michael Weber)
1977 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1978 no samples. (reported by Andy Hefner)
1979 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1980 no longer appear as (NIL ...) frames in backtraces.
1981 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1982 is now actually exported from SB-EXT as documented. (reported by
1984 * bug fix: sb-aclrepl now correctly understands how to inspect
1985 single-floats on 64-bit platforms where single-floats are not boxed.
1986 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1987 yet been finalized. (reported by Levente Meszaros)
1988 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1989 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1990 SBCL-specific optimize qualities.
1992 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1993 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1994 an executable in the search path, and does so in the child
1995 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1996 been removed; it can be found in the CVS history, for somebody who
1997 needs that search behavior (see the manual).
1998 * minor incompatible change: compiler policy re. weakening type
1999 checks has changed: now type checks are weakened only if SAFETY < 2
2001 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
2002 unparsing of directory pathnames as files. Analogously,
2003 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
2004 filename to parse into a directory pathname.
2005 * enhancement: implicit generic function creation now signals a
2006 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
2007 users can bind handlers for and muffle around calls to LOAD.
2008 * enhancement: RUN-PROGRAM allows unicode arguments and environments
2009 to be used (using the default stream external format), and allows
2010 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
2011 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
2012 strings and vectors whose element-type or simplicity is not fully
2013 known at compile-time.
2014 * optimization: STRING-TRIM and related functions no longer allocate
2015 a new string when no trimming needs to be performed. These functions
2016 are also faster than before when the input string has been declared
2018 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
2019 * optimization: READ-LINE is significantly faster for files containing
2021 * optimization: non-open coded uses of character comparison operators
2022 (e.g. char=) no longer cons when called with more than one parameter
2023 on platforms supporting dynamic-extent allocation.
2024 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
2025 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
2026 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
2028 * bug fix: some sequence functions elided bounds checking when
2030 * bug fix: too liberal weakening of union-type checks when SPEED >
2032 * bug fix: more bogus fixnum declarations in ROOM implementation
2035 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
2036 * new feature: MAKE-HASH-TABLE now experimentally accepts a
2037 :SYNCHRONIZED argument, which makes the hash-table safe for
2038 concurrent accesses (but not iteration.) See also:
2039 SB-EXT:WITH-LOCKED-HASH-TABLE, and
2040 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
2041 * optimization: CONCATENATE on strings is an order of magnitude faster
2042 in code compiled with (> SPEED SPACE).
2043 * optimization: SUBSEQ is ~50% faster on lists.
2044 * bug fix: bug 417 fixed -- source location reporting is now more robust.
2045 * bug fix: SUBSEQ on a list will now correctly signal an error if if
2046 END is smaller then START.
2047 * bug fix: SB-PROFILE will no longer report extra consing for nested
2048 calls to profiled functions.
2049 * bug fix: ROOM implementation had bogus fixnum declarations which
2050 could cause type-errors when calling ROOM on large images.
2051 * bug fix: if file compilation is aborted, the partial fasl is now
2052 deleted, and COMPILE-FILE returns NIL as the primary value.
2053 * bug fix: number of thread safety issues relating to SBCL's internal
2054 hash-table usage have been fixed.
2055 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
2056 be returned from its body when the values were being returned
2057 using unknown-values return convection and the W-P-O was wrapped
2058 inside an UNWIND-PROTECT.
2059 * bug fix: sb-posix should now compile again under Windows, enabling
2060 slime to work again.
2062 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
2063 * incompatible change: hash-table accessor functions are no longer
2064 automatically protected by locks. Concurrent accesses on the same hash-table
2065 from multiple threads can give inconsistent results or even corrupt the
2066 hash-table completely. Multi-threaded applications should do their own
2067 locking at the correct granularity. In the current implementation it is
2068 still safe to have multiple readers access the same table, but it's not
2069 guaranteed that this property will be maintained in future releases.
2070 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
2071 and will signal an error at runtime.
2072 * enhancement: SB-THREAD package now exports a semaphore interface.
2073 * enhancement: CONS can now stack-allocate on x86 and
2074 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
2076 * enhancement: nested lists can now be stack allocated on
2077 platforms providing stack allocation support.
2078 * enhancement: dynamic-extent support has been extended to support
2079 cases where there are multiple possible sources for the stack
2081 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
2082 if the mutex is uncontested on Linux.
2083 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
2084 as specified by the CLHS. (thanks to Tobias Rittweiler)
2085 * bug fix: NaN comparison now works on x86-64.
2086 * bug fix: CLOSE :ABORT T on a stream with pending output now
2088 * bug fix: instances of non-standard metaclasses using standard
2089 instance structure protocol sometimes missed the slot type checks
2091 * bug fix: known functions can be inlined in high-debug code.
2093 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
2094 * minor incompatible change: the MSI installer on Windows no longer
2095 associates .lisp and .fasl files with the installed SBCL.
2096 * minor incompatible change: :UNIX is no longer present in *FEATURES*
2097 on Windows. (thanks to Luis Oliviera)
2098 * new feature: SB-CLTL2 contrib module now implements
2099 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
2100 * optimization: scavenging weak pointers is now more efficient,
2101 requiring O(1) instead of O(N) per weak pointer to identify
2102 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
2103 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
2104 method bodies using constant slot-names when the first argument is
2105 a specializer parameter for the method.
2106 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
2107 names, when the class of the instance is a direct instance
2108 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
2109 as slow as the constant slot-name case.)
2110 * optimization: member type construction is now O(N) instead
2112 * optimization: UNION and NUNION are now O(N+M) for large
2113 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
2115 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
2116 now more readable in environments like Slime which display it.
2117 (thanks to Tobias C. Rittweiler)
2118 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
2119 was able to infer the correct argument type for the object on which
2120 the CAS operation was being performed.
2121 * bug fix: copy propagation interfered with parallel assignment
2122 semantics in local calls. (reported by Paul Khuong)
2123 * bug fix: the signed modular fixnum shift compiled to wrong code on
2124 x86 and x86-64. (spotted by a slight modification to some of
2127 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
2128 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
2129 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
2130 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
2132 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
2133 and generic function now print the object identity for anonymous
2134 instances. (thanks to Attila Lendvai)
2135 * enhancement: as an extension to MOP, SBCL now supports SETF of
2136 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
2137 (thanks to Attila Lendvai)
2138 * enhancement: sb-cover has an alternate annotation mode which puts
2139 the form annotations at the car of the form, instead of annotating
2140 it completely. The benefit of this mode is that it shows better
2141 which forms were instrumented by the compiler.
2142 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
2143 by printer control variables. (reported by Dan Corkill)
2144 * bug fix: system leaked memory when delayed output was performed by
2145 the OS in smaller chunks then expected. (thanks to David Smith)
2146 * bug fix: system leaked memory when file streams were not closed
2148 * bug fix: large objects written to slow streams that were modified
2149 after the write could end up with the modified state written to
2150 the underlying file descriptor.
2151 * bug fix: multiple threads operating in parallel on the same stream
2152 could cause buffer-overflows.
2153 * bug fix: source location information is stored correctly
2154 (broken since 1.0.6). This bug would generally show up as the
2155 Slime debugger highlighting the wrong form when the sldb-show-source
2157 * bug fix: Branch forms are again annotated as branches in the sb-cover
2159 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
2160 on x86-64. (reported by Gregory Vanuxem)
2161 * bug fix: EQUALP could return wrong results for structures with raw
2162 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
2163 word). (reported by Vjacheslav Fyodorov)
2164 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
2167 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
2168 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
2169 atomic compare-and-swap operations on threaded platforms.
2170 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
2171 allows assigning a global minimum value to optimization qualities
2172 (overriding proclamations and declarations).
2173 * enhancement: closed over variables can be stack-allocated on x86
2175 * performance bug fix: GETHASH and (SETF GETHASH) are once again
2177 * optimization: slot definition lookup is now O(1). This speeds up
2178 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
2179 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
2180 * optimization: ASSOC and MEMBER can now be open-coded for all
2181 combinations of keyword arguments when second argument is constant
2182 and SPEED >= SPACE. In other cases a specialized version is
2184 * bug fix: using obsoleted structure instances with TYPEP and
2185 generic functions now signals a sensible error.
2186 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
2187 (reported by Kristoffer Kvello)
2188 * bug fix: backtrace construction is now more careful when making
2189 lisp-objects from pointers on the stack, to avoid creating bogus
2190 objects that can be seen by the GC.
2191 * bug fix: defaulting of values in contexts expecting more than 7
2192 variables now works on x86-64. (reported by Christopher Laux)
2193 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
2195 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
2196 as the property-list of a symbol.
2197 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
2198 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
2199 situations requested, are once again file-compileable. (reported
2202 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
2203 * MOP improvement: support for user-defined subclasses of
2204 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
2205 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
2206 the expansion of DEFMETHOD, is responsible for generating a form
2207 which creates a list of specializers when evaluated. Additional
2208 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
2209 debugging and introspective support.
2210 * minor incompatible change: the (unsupported) spinlock interface
2211 has changed: free spinlock now has the value NIL, and a held spinlock
2212 has the owning thread as its value.
2213 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
2214 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
2216 * enhancement: name of a socket-stream is now "a socket" instead of
2217 "a constant string".
2218 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
2219 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
2220 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
2221 for generic functions. (Thanks to Tobias C. Rittweiler)
2222 * optimization: bignum printing speed has been improved by 20-40%
2223 (depending on the bignum size.)
2224 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
2226 * bug fix: the cache used by the CLOS to store precomputed effective
2227 methods, slot offsets, and constant return values is now thread and
2229 * bug fix: generic function dispatch function updating is now thread
2230 and interrupt safe (in the sense that the known issues have been
2232 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
2233 * bug fix: interning EQL-specializers is now thread and interrupt safe.
2234 * bug fix: asdf systems with dependencies to the SB-POSIX or
2235 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
2236 * bug fix: interrupt safety of applicable method computation has been
2239 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
2240 * new contrib: sb-cover, an experimental code coverage tool, is included
2241 as a contrib module.
2242 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
2243 significantly faster.
2244 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2245 produce more efficient code on x86-64 if the compiler can determine
2246 that (+ INDEX <constant>) does not require a bounds check and FOO
2247 has an element type at least 8 bits wide.
2248 * enhancement: a new, experimental synchronous timeout facility is
2249 provided. Refer to SB-SYS:WITH-DEADLINE for details.
2250 * enhancement: when a symbol name conflict error arises, the
2251 conflicting symbols are always printed with a package prefix.
2252 (thanks to Kevin Reid)
2253 * enhancement: stepping is now once again supported on the SPARC and
2254 MIPS platforms. (It is also now more likely to work on CheneyGC
2256 * enhancement: sb-sprof can now also track and report accurate call
2258 * bug fixes: the treatment of non-standard subclasses of
2259 SB-MOP:SPECIALIZER is more correct.
2260 * incompatible change: PURIFY no longer copies the data from the
2261 dynamic space into the static and read-only spaces on platforms
2262 that use the generational garbage collector
2263 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
2265 * bug fix: GC race condition occasionally resulting in crashes with
2266 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
2268 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
2270 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
2271 a STYLE-WARNING to be signalled (regression from 1.0.4.)
2272 * bug fix: an asynchronous interrupt could previously leave the
2273 system running with GC inhibited.
2274 * bug fix: a DECLARE form evaluated at top-level now causes an error
2275 rather than silently (or verbosely) returning NIL.
2276 * bug fix: trying to dissassemble functions compiled at high DEBUG could
2277 result in a error being signalled due to source form lookup errors.
2278 (reported by Peter Graves)
2280 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
2281 * incompatible change: removed writer methods for host-ent-name,
2282 host-ent-addresses -- changing the values did not update the DNS
2284 * minor incompatible change: changed experimental JOIN-THREAD interface
2285 * documentation: the manual now lists reader and writer methods
2286 in class slot documentation sections. (thanks to Richard M Kreuter)
2287 * documentation: unwinding from asyncronous events has been
2288 documented as unsafe.
2289 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
2290 in multithreaded application code.
2291 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
2292 platforms. (thanks to James Anderson for the optimization hint)
2293 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
2295 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
2296 variants no longer cons.
2297 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
2298 their NOT- variants no longer cons.
2299 * optimization: EQUAL hash tables no longer use SXHASH for objects
2300 of all data types, but instead use an EQL hash for types for which
2301 EQUAL is the same as EQL.
2302 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
2303 are significantly faster.
2304 * optimization: new STRING-OUTPUT-STREAM implementation is much
2305 faster for large outputs and conses 30% less on average.
2306 * enhancement: XREF information is now collected for references made
2307 to global variables using SYMBOL-VALUE and a constant argument.
2308 * enhancement: SIGINT now causes a specific condition
2309 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
2310 * bug fix: FILE-POSITION used to signal an error in some cases where
2311 ANSI requires it to return NIL.
2312 * bug fix: ADJUST-ARRAY is now interrupt-safe.
2313 * bug fix: adding and removing fd-handlers is now interrupt-safe.
2314 * bug fix: inlined calls to C now ensure 16byte stack alignment on
2316 * bug fix: bad type declaration in the CLOS implementation has
2317 been fixed. (reported by James Anderson)
2318 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
2319 (thanks to Lutz Euler)
2320 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
2321 required by the CLHS. (reported by Samium Gromoff)
2322 * bug fix: dead unbound variable references now signal an error.
2323 (reported by Marco Monteiro)
2324 * bug fix: / with an unused value was being deleted in safe code.
2325 (thanks to Marco Monteiro and Kevin Reid)
2326 * bug fix: number of characters that can be written onto a single
2327 line in a file is unlimited.
2328 * bug fix: some GC deadlocks caused by asynchronous interrupts have
2329 been fixed by inhibiting interrupts for when GC is disabled.
2330 * bug fix: some interrupt safety issues with GETHASH, (SETF
2331 GETHASH), CLRHASH and REMHASH have been fixed.
2332 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
2333 specifier no longer causes infinite recursion.
2334 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
2335 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
2336 * bug fix: an &environment argument with the correct variable information
2337 is passed to macros that are expanded during byte compilation.
2338 (reported by Samium Gromoff)
2339 * bug fix: a logic error was causing the hash function for bignums to
2340 have excessive amounts of collisions. (reported by Faré Rideau)
2341 * bug fix: modifying the contents of an array could change the return
2342 value of SXHASH on that array, which is only allowed for strings
2343 and bit vectors. (bug introduced in 0.9.16)
2344 * improvement: the x86-64/darwin port now passes all tests (except
2345 for the debugger tests) but should still be considered
2346 experimental until this is fixed.
2347 * improvement: a style-warning is signaled for CASE (etc) clauses with
2348 duplicate keys. (thanks to Kevin Reid)
2349 * improvement: macos/x86 and macos/x86-64 now use mach exception
2350 handlers for dealing with illegal instructions (for trapping and
2351 error handling) and memory protection violations (for GC).
2353 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
2354 * new platform: experimental support for x86-64/darwin (MacOS).
2355 * incompatible change: the thread-safe (on most platforms) getaddrinfo
2356 and getnameinfo sockets functions are used instead of gethostbyaddr
2357 and gethostbyname, on platforms where the newer functions are available.
2358 As a result, the ALIASES field of HOST-ENT will always be NIL on these
2360 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
2361 don't print the startup banner, but behave as if --noinform was passed
2362 as a command line argument. (thanks to Kevin Reid)
2363 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
2364 * optimization: code using alien values with undeclared types is much faster.
2365 * optimization: the compiler is now able to open code SEARCH in more cases.
2366 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
2367 * bug fix: using standardized COMMON-LISP special variables as loop
2368 variables no longer signals bogus package lock violations. (reported
2370 * bug fix: declaring local loop variables to be of a range-limited type
2371 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
2372 (reported by Andras Simon)
2373 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
2374 bugs remain on x86-64.)
2375 * bug fix: the #= and ## reader macros now interact reasonably with
2376 funcallable instances.
2377 * bug fix: type-checks for function arguments were compiled using the
2378 compiler policy settings of the wrong lexical environment (in 1.0.2
2380 * bug fix: SHADOW accepts characters as string designators, as required
2381 by the spec (thanks to Eric Marsden)
2382 * bug fix: fixed GC safety issues when foreign functions are called with
2383 non-base strings as arguments
2384 * bug fix: more consistent error output for fatal-compiler-warnings, like
2386 * bug fix: functions with proper names were showing up as NIL in
2387 backtraces (reported by Edi Weitz, regression in 1.0.2)
2389 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
2390 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
2391 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
2392 produce more efficient code on the x86 if the compiler can determine
2393 that (+ INDEX <constant>) does not require a bounds check and FOO
2394 has an element type at least 8 bits wide.
2395 * bug fix: references to undefined variables are handled the same way
2396 in toplevel forms as in the normal compiler
2397 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
2399 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
2400 (thanks to Jon Buller)
2401 * improvement: faster compilation times for complex functions
2402 * improvement: added readlink support to SB-POSIX (thanks to Richard
2405 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
2406 * improvement: experimental support for mach exception handling on
2407 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
2409 * improvement: support for GBK external format.
2410 (thanks to Chun Tian (binghe))
2411 * improvement: the debugger now displays variables that have been closed
2412 over, in code compiled with (DEBUG 2) or higher
2413 * improvement: support for executable cores on NetBSD (thanks to
2415 * new feature: added a RESTART-FRAME debugger command
2416 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
2417 be used to provide an implementation for FILE-POSITION on Gray streams
2418 (thanks to Eric Marsden)
2419 * new feature: add syslog, openlog and closelog support to SB-POSIX
2420 (thanks to Richard Kreuter)
2421 * optimization: the function call overhead in code compiled with
2422 a high DEBUG optimization setting is significantly
2423 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
2424 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
2425 (thanks to Tony Martinez)
2426 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
2427 evaluated once (reported by Kevin Reid)
2428 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
2429 works again (thanks to Kilian Sprotte)
2430 * bug fix: an error is signaled for tagbodies with duplicate tags
2431 (thanks to Stephen Wilson)
2432 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
2433 * bug fix: Win32 port can now handle foreign code unwinding Lisp
2434 stack frames from alien callbacks.
2435 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
2436 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
2437 65k pages (thanks to David Woodhouse)
2438 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
2440 changes in sbcl-1.0.1 relative to sbcl-1.0:
2441 * new platform: FreeBSD/x86-64, including support for threading.
2442 * new feature: the compiler stores cross-referencing information
2443 about function calls (who-calls), macroexpansion (who-macroexpands)
2444 and special variables (who-binds, who-sets, who-references) for code
2445 compiled with (< SPACE 3). This information is available through the
2446 sb-introspect contrib.
2447 * new feature: users may subclass SEQUENCE, and have instances of
2448 these classes interoperate with standard Common Lisp functions if
2449 a number of methods are defined. (This feature is experimental
2450 and the interface subject to change based on feedback from SBCL
2451 users and the general community)
2452 * improvement: sb-sprof traces call stacks to an arbitrary depth on
2453 x86/x86-64, rather than the previous fixed depth of 8
2454 * improvement: another pthread back-end of mutex "pthread-futex".
2455 * bug fix: non-ascii command-line arguments are processed correctly
2456 (thanks to Yaroslav Kavenchuk)
2457 * bug fix: non-required arguments were not passed correctly when a method
2458 defined using DEFMETHOD was called from a mop-generated method using
2459 CALL-NEXT-METHOD (reported by Pascal Costanza)
2460 * bug fix: recursion is now permitted in accessors through
2461 SLOT-UNBOUND. (reported by Pascal Costanza)
2462 * bug fix: an error was signaled at startup if the HOME environment
2463 variable was defined, but had an empty value (reported by Peter Van Eynde)
2464 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
2465 signal a PROGRAM-ERROR, not a BUG.
2466 * bug fix: SB-POSIX:READDIR works when built with large file support.
2467 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
2469 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
2470 for better automatic indentation support. (thanks to Matt Pillsbury)
2471 * optimization: loading generic functions no longer takes O(n^2) time,
2472 proportional to the amount of methods in the generic function
2473 (reported by Todd Sabin and Jeremy Brown)
2474 * optimization: the FIND and POSITION family of sequence functions
2475 are significantly faster on arrays whose element types have been
2477 * improvements to the Windows port:
2478 ** Intermittent heap corruption problems have been fixed. (thanks
2479 to Alastair Bridgewater)
2480 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
2482 ** Lisp is able to unwind foreign exception frames from alien
2483 callbacks. (thanks to Alastair Bridgewater)
2485 changes in sbcl-1.0 relative to sbcl-0.9.18:
2486 * improvement: experimental support for threading on FreeBSD/x86.
2487 (thanks to NIIMI Satoshi)
2488 * improvement: runtime option --dynamic-space-size can be used
2489 to set the size of the dynamic space reserved on startup.
2490 * improvement: floating point modes in effect are now saved in
2491 core, and restored on startup.
2492 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
2493 startup, not time since first call to GET-INTERNAL-REAL-TIME.
2494 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
2495 threads are not running after *SAVE-HOOKS* have run.
2496 * improvement: writes to CLOS instance slots are type-checked in code
2497 compiled with (SAFETY 3)
2498 * improvement: floating-point exception handling on FreeBSD (thanks to
2500 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
2501 (thanks to Zach Beane)
2502 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
2504 * improvement: added support for the Shift-JIS external format.
2505 (contributed by NIIMI Satoshi)
2506 * improvement: callbacks are supported on Linux/PPC. (thanks to
2508 * bug fix: compiler bug triggered by a (non-standard) VALUES
2509 declaration in a LET* was fixed. (reported by Kaersten Poeck)
2510 * bug fix: file compiler no longer confuses validated and already
2511 dumped structurres. (reported by Kaersten Poeck)
2512 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
2513 fill-pointer signals a type-error as required. (thanks to
2515 * bug fix: disassemly of funcallable instances works.
2516 * bug fix: single stepping on PPC.
2517 * bug fix: fix thread-safety problems in the type system (generally
2518 manifesting as nonsensical errors like "STRING is a bad type specifier
2519 for sequences" or "The value 1 is not of type FIXNUM")
2520 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
2521 (reported by Josip Gracin)
2522 * bug fix: an error is signaled for attempts to displace arrays with
2523 incompatible element types (thanks to Mario Mommer)
2524 * bug fix: more correct handling of wide characters in debug info
2525 (bug reported by Attila Lendvai and fixed by Juho Snellman)
2526 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
2527 and don't cause extra consing
2528 * optimization: MAP and MAP-INTO are significantly faster on vectors
2529 whose elements types have been declared.
2530 * Improvements to SB-SPROF:
2531 ** Support for allocation profiling
2532 ** Reduced profiling overhead, especially for long profiling runs
2533 * Improvements to the Windows port:
2534 ** floating point exceptions are now reported correctly.
2535 ** stack exhaustion detection works partially.
2536 ** more accurate GET-INTERNAL-REAL-TIME.
2537 ** better RUN-PROGRAM behaviour in case of errors in the child
2539 ** PROBE-FILE now simplifies pathnames correctly.
2540 ** DIRECTORY now works correctly with :WILD-INFERIORS.
2541 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
2542 1st 1970 (although time timezone data will be unreliable).
2543 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
2545 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
2546 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
2547 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
2549 * bug fix: two potential GC deadlocks affecting threaded builds.
2550 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
2551 returns T (reported by Anton Kazennikov)
2552 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
2553 with non-variable places
2554 * bug fix: remove a race condition in the setting of
2555 funcallable-instance functions, this should make threaded CLOS
2556 code more stable against memory faults.
2557 * bug fix: corruption of specials when unbinding is interrupted by an
2558 asynchronous unwind (reported by Hannu Koivisto)
2559 * improvement: the debugger will now also display local variables that
2560 are only used once, for code compiled with a DEBUG optimization quality
2563 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
2564 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
2565 * incompatible change: External-format support for FFI calls. The
2566 SB-ALIEN:C-STRING no longer implies an ASCII
2567 external-format. Instead the string is subject to external-format
2568 conversion. Additionally return values of type SB-ALIEN:C-STRING
2569 are by default of type (SIMPLE-ARRAY CHARACTER), not
2570 SIMPLE-BASE-STRING. For an alien type that behaves like the old
2571 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
2572 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
2573 * incompatible change: SB-EXT package no longer contains the
2574 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
2575 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
2577 * incompatible change: the single-stepper is no longer available
2578 on Alpha, Mips and Sparc platforms.
2579 * minor incompatible change: the direct superclasses of
2580 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
2581 not (STANDARD-OBJECT FUNCTION). This makes the
2582 class-precedence-lists of GENERIC-FUNCTION and
2583 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
2585 * minor incompatible change: the default stream external format on
2586 non-unicode SBCL is no longer detected from the locale, but is always
2588 * new feature: Add a version of evaluator that uses an interpreter instead
2589 of the compiler. EVAL still uses the compiler by default, to switch it
2590 to use the interpreter, set the value of the variable
2591 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
2592 * minor incompatible change: the single-stepper REPL has been merged
2593 with the normal debugger (see the "Stepping" heading of the debugger help
2594 for more details). The debugger command STEP will no longer switch
2595 to the single-stepper REPL.
2596 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
2597 for a type now works.
2598 * bug fix: loading of default sysinit file works. (thanks to Leonid
2600 * bug fix: better detection of circularities in the file-compiler.
2601 (reported by Marco Monteiro)
2602 * bug fix: the CL pathname functions now work with files that have
2603 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
2604 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
2605 systems with Unix98 pty semantics.
2606 * bug fix: ASDF-INSTALL will now work with bsd tar.
2607 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
2609 * bug fix: timers expiring in dead threads no longer cause a
2610 type-error (reported by Paul "Nonny Mouse").
2611 * bug fix: thanks to more lightweight single-stepper instrumentation,
2612 code compiled with (DEBUG 3) will compile and execute significantly faster,
2613 and will have more accurate type-inferencing than before
2614 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
2615 whose bindings are modified
2616 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
2617 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
2618 ** replace dummy implementations of CL:MACHINE-INSTANCE and
2619 CL:SOFTWARE-VERSION with proper version
2621 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
2622 * feature: implemented the READER-METHOD-CLASS and
2623 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
2624 as specified by AMOP.
2625 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
2627 * optimization: faster LOGCOUNT implementation on x86 and x86-64
2628 (thanks to Lutz Euler)
2629 * optimization: hashing of general arrays and vectors has been
2630 improved. (reported by Any Fingerhut)
2631 * enhancement: SB-INTROSPECT is now able to find definitions of
2632 profiled functions. (thanks to Troels Henriksen)
2633 * enhancement: compiler-macro expansion applies now to FUNCALL forms
2634 as well, allowing compiler-macros for SETF-functions to expand.
2635 * enhancement: step-instrumentation no longer wraps known
2636 single-value functions with multiple-value context, allowing
2637 better type inference.
2638 * fixed bug #337: use of MAKE-METHOD in method combination now works
2639 even in the presence of user-defined method classes. (reported by
2640 Bruno Haible and Pascal Costanza)
2641 * fixed bug #339(c): if there are applicable methods not part of any
2642 long-form method-combination group, call INVALID-METHOD-ERROR.
2643 (reported by Bruno Haible)
2644 * fixed bug #361: the :FUNCTION initarg in the protocol for
2645 initialization of methods can now be used to override
2646 internally-produced optimized functions. (reported by Bruno
2648 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
2649 system-provided lambda expression no longer cause warnings about
2650 unbound #:|pv-table| symbols.
2651 * bug fix: improved the handling of type declarations and the
2652 detection of violations for keyword arguments with non-constant
2654 * bug fix: potentially erronous calls to PATHNAME and
2655 MERGE-PATHNAMES were being flushed in some cases.
2656 (reported by Richard Kreuter)
2657 * bug fix: compiled calls to TYPEP were mishandling obsolete
2658 instances. (reported by James Bielman and Attila Lendvai)
2659 * bug fix: format strings with ~> without matching ~< no longer
2660 trigger an AVER, but signal an understandable error instead.
2661 (reported by Antonio Martinez)
2662 * bug fix: specifying an output-file without a pathname-type for
2663 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
2664 of input-file instead of "fasl". (reported by Robert Dodier)
2665 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
2666 (reported by James Y Knight).
2667 * bug fix: compiler-macros-function did not consider the environment
2668 argument for shadowing by local functions.
2669 * bug fix: compiler-macros expansion was inhibited by local INLINE
2671 * bug fix: inline expansions of known functions were subject to
2672 step-instrumentation in high debug policies, leading to problems
2673 with type-inference.
2674 * bug fix: compiler failed to differentiate between different CONS
2675 types in some cases.
2676 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
2677 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
2678 * bug fix: #368: incorrect use of expressed vs. upgraded array
2680 * bug fix: #306a: more precise unions of array types.
2681 * thread-safety improvements:
2682 ** CONDITION-WAIT could return early on Linux, if the thread was
2683 interrupted and subsequently continued with SIGCONT.
2684 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
2686 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
2687 * added support for the ucs-2 external format. (contributed by Ivan
2689 * minor incompatible change: pretty printing of objects of type
2690 (cons symbol) is, in the default pprint-dispatch-table, now
2691 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2693 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2694 called later in a class's lifetime, possibly as late as when the
2695 first instance of the class is created. Previously,
2696 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2697 class became finalizeable.
2698 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2699 for multibyte external-format streams. (thanks to "vbzoli")
2700 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2701 with :ALLOCATION :CLASS inherited from superclasses of the
2703 * fixed bug: anonymous classes can now be created using the :NAME
2704 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2705 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2706 * fixed bug: core-files saved with :EXECUTABLE T can again be
2707 executed when SBCL_HOME isn't set. (reported by James Knight)
2708 * fixed bug: toplevel LOCALLY forms with declarations could
2709 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2710 * fixed bug: printing from several different threads using different
2711 values of *print-case* could cause invalid output, due to
2712 some internal special variables of the printer not being bound
2713 thread-locally (reported by Max Mikhanosha)
2714 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2715 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2716 (reported by Pascal Costanza)
2717 * fixed bug: FINALIZE-INHERITANCE is called from
2718 REINITIALIZE-INSTANCE on classes when the class has previously
2719 been finalized, as required by AMOP.
2720 * minor code generation optimizations:
2721 ** better register allocation in CLOS dispatching functions
2722 ** overflow detection when coercing signed bytes to fixnums on x86-64
2723 ** is now implemented with one IMUL instruction instead of three shifts
2724 ** more efficient bit-vector access on x86 and x86-64
2725 ** more efficient access to raw structure slots on x86 and x86-64
2726 * fixed some bugs revealed by Paul Dietz' test suite:
2727 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2728 return its argument.
2730 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2731 * feature: thread support on Solaris/x86, and experimental thread support
2733 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2735 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2736 default method for SLOT-UNBOUND.
2737 * minor incompatible change: prevent the user from specializing the
2738 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2739 somewhat counter to the intent of the protocol, I (CSR) think, and
2740 additionally it just doesn't work in SBCL as currently
2741 implemented, thanks to optimizations (that are always valid for
2742 the other three SLOT-VALUEish functions, but not for the setter).
2743 * minor incompatible change: the :SB-LDB feature is now enabled by
2744 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2745 the low-level debugger.
2746 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2747 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2748 down to an SB-SYS:FD-STREAM, allowing direct communication in
2749 more cases. Temporary files and pipes are still used as a fallback
2751 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2752 on the non-reentrant C functions localtime(3) and gmtime(3).
2753 * bug fix: global optimization policy was not visible in LOCALLY and
2755 * bug fix: class objects can be used as specializers in methods.
2756 (reported by Pascal Costanza)
2757 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2758 with a type error. (reported by blitz_ on #lisp)
2759 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2760 failed with a type error. (reported by Pascal Bourguignon)
2761 * bug fix: merging pathnames against defaults with :DIRECTORY
2762 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2763 (reported by James Y Knight)
2764 * bug fix: saving large (>2GB) cores on x86-64 now works
2765 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2766 constant index and a (simple-array (signed-byte 32)) array
2767 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2768 error (patch by Robert J. Macomber)
2769 * feature: TIME now displays the amount of run-time spent in GC
2770 * bug fix: The debugger now does a better job of respecting
2771 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2772 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2773 workaround for bug 403.)
2774 * bug fix: floating point exception handling now works on FreeBSD
2775 (thanks to NIIMI Satoshi)
2776 * fixed some bugs revealed by Paul Dietz' test suite:
2777 ** MISC.641: LET-conversion were not supposed to work in late
2779 * improvements to the Win32/x86 port:
2780 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2781 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2783 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2784 * new feature: source path information is generated for macro-expansion
2785 errors for use in IDE's like Slime (thanks to Helmut Eller)
2786 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2787 * bug fix: compiler does not loop forever on an invalid type in
2789 * improvement: compilation of most CLOS applications is significantly
2791 * optimization: added a limited bytecode compiler for simple toplevel
2792 forms, speeding up compilation and FASL loading
2793 * bug fix: the statistical profiler now properly distinguishes anonymous
2796 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2797 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2798 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2799 into subclasses of the finalized class. Now user calls to
2800 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2801 system return before any subclasses are finalized.
2802 * minor incompatible change: The reader no longer ignores errors
2803 regarding non-existent packages in #+ and #- feature tests.
2804 * new feature: command line options --no-sysinit, --no-userinit to
2805 inhibit loading the corresponding init files
2806 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2807 for sending data through UDP sockets (thanks to François-René Rideau)
2808 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2809 error is signalled instead (thanks to François-René Rideau)
2810 * minor incompatible change: Error signalling behaviour of lexical
2811 operations violating package locks has changed slightly. Refer to
2812 documentation on package locks for details.
2813 * enhancement: EVAL can process IF-expressions without resorting to the
2815 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2816 constant-folded properly due to missing out-of-line functions.
2817 (reported by Mika Pihlajamäki)
2818 * bug fix: LISTEN sometimes returned T even in cases where no data was
2819 immediately available from the stream
2820 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2821 were reversed. (reported by Levente Mészáros)
2822 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2823 when given a vector displaced to an adjustable array. (reported
2825 * bug fix: derivation of float boundaries from numbers outside the
2826 appropriate float range (reported by John Wiseman)
2827 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2829 * bug fix: precomputing cache entries for generic functions with
2830 some subclasses of specializers as yet invalid does not attempt to
2831 fill a cache line with a negative offset. (reported by Levente
2833 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2834 allow condition class objects as arguments to DOCUMENTATION and
2835 (SETF DOCUMENTATION); only find and set documentation for
2836 structure names for the STRUCTURE doc-type. (suggested by Gary
2838 * improvements to the Win32/x86 port:
2839 ** (user-homedir-pathname) and default initialization file
2840 locations now know about the user's "Documents and Settings"
2841 directory (thanks to Yaroslav Kavenchuk)
2842 ** run-program is implemented (thanks to Mike Thomas)
2843 ** sockets support (thanks to Timothy Ritchey)
2844 ** better backtrace support (thanks to Alastair Bridgewater)
2845 ** sb-grovel supported
2846 ** asdf-install and sb-posix work somewhat
2847 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2848 * improvements to the Solaris/x86 port:
2849 ** works on Solaris 11/Solaris Express
2850 ** floating-point exception handling support
2851 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2852 * fixed some bugs revealed by Paul Dietz' test suite:
2853 ** REMOVE-METHOD returns its generic function argument even when
2854 the method is not one of the generic functions' methods.
2855 ** objects declared as MEMBER types can be admissible arguments to
2856 structure accessors.
2857 ** printing characters should simply be printed by the FORMAT ~:C
2859 ** compiler failure when compiling functions with hairy constant
2860 defaults for optional parameters.
2861 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2862 function, which is already optimized.
2864 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2865 * new platform: experimental support for SBCL x86/Darwin, including
2866 MacOS X 10.4.5 on Intel.
2867 * new feature: Unicode character names are now known to the system
2868 (through CHAR-NAME and NAME-CHAR).
2869 * new feature: the filesystem location of SBCL's core file is
2870 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2871 * minor incompatible change: the contrib modules SB-POSIX and
2872 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2873 this change is to make it easier to distribute
2874 location-independent binaries.
2875 * bug fix: as implied by AMOP, standardized classes no longer have
2876 slots named by external symbols of public packages. (reported by
2878 * optimization: calling functions via constant symbols -- as in
2879 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2880 via the function object as in (FUNCALL #'FOO).
2881 * optimization: on x86 and x86-64, the calling convention for the
2882 case of dealing with an unknown number of values has been altered
2883 to be friendlier to the prediction heuristics implemented,
2884 particularly with reference to CALL and RET pairing. (thanks to
2885 Alastair Bridgewater)
2886 * optimization: on x86, the code for access to thread-local symbol
2887 values and binding/unbinding of thread-local symbols is smaller.
2888 (thanks to Alastair Bridgewater)
2889 * enhancement: CONSTANTP is now able to determine constantness of
2890 more complex forms, including calls to constant-foldable standardized
2891 functions and some special forms beyond QUOTE.
2892 * fixed bug: occasional GC crashes on Solaris/x86
2893 * optimization: x86-64 supports stack allocation of results of simple
2894 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2895 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2896 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2897 (thanks to James Knight)
2898 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2899 by the standard (thanks to Stephen Compall)
2901 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2902 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2903 be used for bundling the runtime and the core file into one
2904 executable binary. This feature is not currently supported on all SBCL
2905 platforms. (thanks to James Bielman and NIIMI Satoshi)
2906 * new feature: a generational or ephemeral garbage collector is now
2907 the default on the PowerPC platform (both Linux and Darwin). The
2908 old Cheney (stop and copy) collector is a build-time option.
2909 (thanks to Cyrus Harmon, after Raymond Toy)
2910 * minor incompatible change: the method by which SBCL finds its
2911 contributed modules has changed; it no longer relies on symbolic
2912 links from an $SBCL_HOME/systems directory, but searches directly
2913 in the subdirectories of $SBCL_HOME.
2914 * enhancement: the dynamic heap size on the Linux/PPC platform is
2915 markedly larger, even using the older Cheney garbage collector.
2916 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2917 certain complicated string types. (reported by Gary King)
2918 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2919 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2920 * fixed bug: DOCUMENTATION on structures no longer signals an
2921 error if no structure type of the right name exists. (reported by
2923 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2924 applicable non-standard primary or :AROUND method on
2925 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2926 no longer cause unbound variable errors. (reported by Kevin Reid)
2927 * fixed bug: metacircle resolution in cases where methods have slots
2928 added before the slots from STANDARD-METHOD. (reported by Jean
2930 * fixed bug: the Power PC assembly code for calling into lisp
2931 sometimes computed its return address wrongly (depending on the
2932 15th bit of the address, fixed at link time). This used to
2933 manifest itself in a segmentation violation while building PCL.
2934 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2935 many others over the years)
2936 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2937 the stack pointer (treated as a signed integer) is negative.
2938 (thanks to Peter van Eynde)
2940 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2941 * new platform: experimental support for the Windows operating
2942 system has been added. (thanks to Alastair Bridgewater)
2943 * fixed several bugs in and robustified the PPC FFI (including
2944 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2945 * bug fix: allow non-simple string symbol names (reported by Paul
2947 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2949 * bug fix: saving a core corrupted callbacks on x86/x86-64
2950 * bug fix: closed a loophole in metacircularity detection and
2951 grounding in the PCL implementation of CLOS.
2952 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2953 (reported by tomppa on #lisp)
2954 * bug fix: clear the direction flag on Lisp -> C transitions, as
2955 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2956 (reported by Andrej Grozin and Hendrik Maryns)
2957 * optimization: major improvements to GC efficiency on GENCGC platforms
2958 * optimization: faster implementation of EQUAL
2959 * optimization: emit more efficient opcodes for some common
2960 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2961 * optimization: several other minor code-generation improvements on x86-64
2962 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2964 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2965 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2966 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2967 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2968 by ANSI as a generic function, and for consistency (SETF
2969 GENERIC-FUNCTION-NAME) is treated likewise.
2970 * fixed bug #233.b: make constraint propagation notice when a variable
2971 value is changed after it is referenced but before it is used
2972 * fixed bug #296: no more arbitrary behaviour from filenames with
2973 odd characters as --load arguments. (reported by Adam Warner)
2974 * fixed bug #390: :CHARACTER-SET pathname components now work as
2975 expected. (reported by Tim Daly Jr)
2976 * fixed bug #391: complicated :TYPE intersections in slot
2977 definitions no longer cause an error in PCL internals.
2978 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2979 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2980 returning the number of octets which would be written to the
2981 file-stream. (thanks to Robert J. Macomber)
2982 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2983 arguments to the internal stream functions. (thanks to David
2985 * bug fix: stack exhaustion is now handled on the x86/SunOS
2986 platform. (thanks to Daisuke Homma)
2987 * bug fix: more accurate ROOM results on GENCGC platforms
2988 * optimization: improved type inference for arithmetic-for
2989 index variables in LOOP
2990 * optimization: faster floating-point SQRT on x86-64
2991 * fixed some bugs revealed by Paul Dietz' test suite:
2992 ** DOCUMENTATION returns NIL instead of "" for method combinations
2993 that don't have a docstring
2995 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2996 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2997 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2998 therefore are not customizeable by user code (as seems to be at
2999 least permitted and maybe required by AMOP). As a consolation,
3000 however, the SBCL implementation of these functions now calls
3001 REINITIALIZE-INSTANCE as specified by AMOP.
3002 * bug fix: slot-definition documentation is propagated as per ANSI
3003 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
3004 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
3005 argument, as do eslotd initialization methods. (from Pascal
3006 Costanza's "Closer" project)
3007 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
3008 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
3010 * bug fix: it is now possible to have more than one subclass of
3011 STANDARD-GENERIC-FUNCTION without causing stack overflow.
3012 (reported by Bruno Haible, Pascal Costanza and others)
3013 * bug fix: the dependent update protocol now works for generic
3014 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
3015 and Pascal Costanza)
3016 * bug fix: condition-class instances corresponding to
3017 DEFINE-CONDITION forms are now created eagerly. (reported by
3018 Kalle Olavi Niemitalo on comp.lang.lisp)
3019 * bug fix: floating point printing is more accurate in some
3020 circumstances. (thanks to Simon Alexander)
3021 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
3022 merged with *DEFAULT-PATHNAME-DEFAULTS*.
3023 * bug fix: callbacks on OS X now preserve stack-alignment.
3024 (thanks to Cyrus Harmon)
3025 * enhancement: the x86-64 disassembler is much better at
3026 disassembling SSE instructions. (thanks to Lutz Euler)
3027 * enhancement: CHECK-TYPE on a variable now allows type-inference
3028 (thanks to Vincent Arkesteijn)
3029 * optimization: improved performance of EUC-JP external format.
3030 (thanks to NIIMI Satoshi)
3031 * optimization: performance improvements to IO on file streams of
3032 :ELEMENT-TYPE CHARACTER
3033 * optimization: much faster memory allocation on x86-64
3034 * optimization: faster garbage collections (latency and throughput)
3036 * optimization: faster bignum subtraction and division on x86 and x86-64
3037 (thanks to Lutz Euler)
3038 * optimization: more accurate type-inference for loops that use a
3039 floating point index variable or a negative step.
3041 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
3042 * bug fix: add a workaround to SBCL looping infinitely at startup on
3043 Linux kernels with apparently buggy implementations of personality().
3044 (thanks to Svein Ove Aas)
3045 * bug fix: Unicode symbols are correctly printed in LDB backtraces
3046 (thanks to David Lichteblau)
3047 * bug fix: local bindings shadow global symbol macros for
3048 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
3049 * optimization: non-open coded uses of numeric comparison operators
3050 (e.g. >) no longer cons when called with more than one parameter
3051 on platforms supporting dynamic-extent allocation.
3052 * enhancement: saving cores with foreign code loaded is now supported
3053 on MIPS/Linux in addition to the previously supported platforms.
3054 * bug fix: FIND-RESTART now tests for activity, not applicability when given
3055 a restart object as identifier. (reported by Helmut Eller for CMUCL)
3056 * bug fix: division by zero in sb-sprof when no samples were collected
3057 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
3058 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
3059 (thanks to Alexander Kjeldaas)
3060 * new feature: ignoring the return values of destructive functions
3061 like NREVERSE signals a compile-time style-warning.
3062 (thanks to Kevin Reid)
3063 * new feature: the alignment of alien structure fields can be
3064 explicitly specified. (thanks to Cyrus Harmon)
3065 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
3066 and dump core on SIGQUIT
3068 ** incompatible change: threads do not inherit values of specials
3069 from their parents (see manual)
3070 ** bug fix: threads stacks belonging to dead threads are freed by the
3071 next exiting thread, no need to gc to collect thread stacks anymore
3072 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
3073 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
3074 ** bug fix: dynamic variable and thread start related gc lossage
3075 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
3077 * fixed some bugs revealed by Paul Dietz' test suite:
3078 ** SUBTYPEP is slightly more accurate on heinously complicated
3079 CONS types where some of the members have uncertain (in the
3080 NIL, NIL sense) type relationships to each other.
3082 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
3083 no longer purified unless :PURIFY T is explicitly specified.
3084 ** Non-purified cores are significantly smaller than before
3086 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3087 * new feature: timers based on Zach Beane's excellent timer package
3088 * added support for the following external formats: koi8-u,
3089 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
3090 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
3091 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
3092 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
3093 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
3094 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
3095 * incompatible change: a threaded SBCL will no longer revert to
3096 non-threaded mode on non-NPTL systems, but refuse to start entirely.
3097 * bug fix: interrupts are disabled until startup is complete; no
3098 more sigsegvs when receiving a signal to soon
3099 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
3101 * bug fix: add a workaround for the memory randomization features in
3102 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
3103 workaround will only be in effect on systems with the proc filesystem
3105 * bug fix: printing objects of type HASH-TABLE signals a
3106 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
3108 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
3109 have been running for over 50 days. (reported by Gilbert Baumann)
3110 * bug fix: the logic for getting names of functions gets less
3111 confused when confronded with alternate-metaclass
3112 funcallable-instances. (reported by Cyrus Harmon)
3113 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
3114 consistent, even on internal alternate-metaclass objects.
3115 * bug fix: flush closure information collected by physical
3116 environment analysis prepass before the main pass. (bug reported
3118 * bug fix: compiler pack phase does not modify a hashtable, which is
3119 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
3120 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
3121 may be expanded. (reported by Alexander <malishev> on c.l.l)
3122 * bug fix: no more style-warnings when compiling code using LAST
3123 under high-SPEED low-SPACE settings. (reported by David Wallin
3125 * fixed some incompatibilities between SBCL's MOP and the MOP
3127 ** the METAOBJECT class is now implemented;
3128 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
3129 STANDARD-OBJECT, as required;
3130 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
3131 now compatible (as required by VALIDATE-SUPERCLASS); there
3132 remains a consistency requirement over the presence or absence
3133 of the FUNCTION class in the superclass list of finalized
3134 classes; see the manual for more details;
3135 ** the :AROUND method for COMPUTE-SLOTS on
3136 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
3137 requested slot ordering.
3139 ** bug fix: parent thread now can be gc'ed even with a live
3141 ** bug fix: binding a special with PROGV to no value is not
3142 the same as that symbol not having been bound (thanks to
3144 ** bug fix: binding specials is thread safe (thanks to
3146 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
3147 and SB-SPROF do not die with 'no handler for signal XX in
3148 interrupt_handle_now(..)' anymore
3149 ** bug fix: WITH-TIMEOUT works with multiple running threads
3150 * fixed some bugs revealed by Paul Dietz' test suite:
3151 ** ENSURE-GENERIC-FUNCTION should take a method class object for
3152 the :method-class keyword argument.
3154 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3155 * new port: the Solaris operating system on x86 processors is now
3156 mostly supported, though some rough edges in the environment
3157 remain. (thanks to Daisuke Homma)
3158 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
3159 space for its heap. (thanks to Thiemo Seufer)
3160 * optimization: SBCL on MIPS platforms now supports dynamic-extent
3161 closures. (thanks to Thiemo Seufer)
3162 * minor incompatible change: eof selects abort in the debugger.
3163 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
3164 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
3166 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
3167 deprecated, and will go away in a future revision of SBCL.
3168 * minor incompatible change: GC-ON and GC-OFF are no longer
3169 implemented with a counter, it does not matter how many times gc
3170 is switched on or off
3171 * bug fix: discriminating functions for generic function classes
3172 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
3173 make invalid assumptions about method precedence order. (reported
3175 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
3176 platforms. (thanks to Thiemo Seufer)
3177 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
3178 * bug fix: correct pathname printing with printer escaping is on.
3179 (thanks to Kevin Reid)
3180 * bug fix: complex VOP definitions in "user-space" no longer trigger
3181 package locks. (reported by Zach Beane)
3182 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
3183 for funcallable-instance functions, and is no different from
3185 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
3186 characters in the current readtable. (reported by Nicholas Neuss)
3187 * bug fix: SUBTYPEP on various CONS types returns more a more
3188 accurate acknowledgment of its certainty.
3189 * optimizations: REMOVE-DUPLICATES now runs in linear time on
3190 lists in some cases. This partially fixes bug 384.
3191 * flush all standard streams before prompting in the REPL and the
3193 * bug fix: signal handling and triggering gc do not conflict
3194 directly anymore, in particular a high frequency sb-sprof does
3195 not prevent gc from running
3196 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
3197 approximation for timezone and DST information between the
3198 universal time epoch and the smallest negative 32-bit time_t.
3199 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
3200 year 1899 so long as the encoded time is non-negative.
3201 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
3202 the correct answer for non-constant rotate amounts when performing
3203 an inline 32-bit rotation.
3205 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
3206 there is only one thread in the session
3207 ** bug fix: memory leak for streams created in one thread and
3208 written to in another
3209 ** bug fix: lockup when compiled with gcc4
3210 ** bug fix: race that allows the gc to be triggered when gc is
3212 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
3213 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
3215 ** bug fix: finished threads are gc'ed properly
3216 * fixed some bugs revealed by Paul Dietz' test suite:
3217 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
3218 has arguments with a different set of applicable methods from
3219 the orignal arguments.
3220 ** The type error thrown by MAP now has a correct expected-type
3222 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
3223 name a compiled function.
3224 ** Three MISC tests where a large bignum was improperly coerced to
3225 a float that couldn't represent that bignum during type
3226 derivation were fixed.
3227 ** SUBTYPEP can now handle types involving the negation of a
3228 list-form FUNCTION type.
3229 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
3230 as (COMPLEX (AND RATIO (NOT FIXNUM))).
3231 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
3233 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
3234 * New feature: Experimental support for bivalent streams: streams
3235 opened with :element-type :default now allow character and binary
3236 (unsigned-byte 8) I/O
3237 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
3238 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
3240 * bug fix: no more highly sporadic "couldn't check whether ~S is
3241 readable" when reading a stream and an interrupt hits in the middle
3242 of a select system call
3243 * compiler better recognizes complex arrays (reported by Eduardo
3245 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
3246 for variables on SBCL built with linkage-tables. (reported by Luis
3248 * various error reporting improvements.
3249 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
3250 (Thanks to Thiemo Seufer)
3251 * bug fix: nested reader invokations work correctly
3252 * bug fix: it is possible to have simultaneous references to foreign
3253 code and foreign data with the same name.
3255 ** added x86-64 support
3256 ** incompatible change: the threading api now works with thread
3257 objects instead of thread ids
3258 ** bug fix: threads are protected from signals and interruption when
3259 starting up or going down
3260 ** bug fix: a race where an exiting thread could lose its stack to gc
3261 ** bug fix: don't halt on infinite error in threads if possible
3262 ** fixed numerous gc deadlocks introduced in the pthread merge
3263 ** bug fix: fixed thread safety issues in read and print
3264 ** bug fix: debugger doesn't hang on session lock if interrupted at
3265 an inappropriate moment
3266 ** bug fix: run-program is now thread safe(r)
3267 ** bug fix: inner with-recursive-lock no longer releases the mutex
3268 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
3269 * fixed some bugs revealed by Paul Dietz' test suite:
3270 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
3271 EXPECTED-TYPE slots filled.
3272 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
3274 ** MAKE-CONDITION accepts classes as type-designators.
3275 ** COMPILE may never return NIL.
3276 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
3277 range before calling Unix time functions
3279 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
3280 * numerous signal handling fixes to increase stability
3281 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
3282 * minor incompatible change: we now correctly canonize default
3283 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
3284 as per the MOP, rather than the historical (INITARG INITFUNCTION
3285 INITFORM). (reported by Bruno Haible)
3286 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
3287 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
3288 for more information.
3289 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
3290 pathname is a directory pathname.
3291 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
3292 * dynamic space size on PPC has been increased to 768Mb. (thanks to
3294 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
3295 :METACLASS argument in addition to a class name. (reported by
3296 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
3297 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
3298 (reported by Bruno Haible; patch from Gerd Moellmann)
3299 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
3301 * bug fix: more cleanups to the floating point exception handling on
3302 x86-64 (thanks to James Knight)
3303 * bug fix: the compiler does not try to constant fold calls of
3304 COERCE and BIT-* functions when they return freshly constructed
3305 objects. (reported by Nikodemus Siivola and Paul Dietz)
3306 * optimization: improved the MIPS versions of generic (in the
3307 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
3308 * optimization: direct conversion of (unsigned-byte 32) to floats on
3309 the PowerPC platform.
3310 * optimization: structure instances with raw slots now use less
3311 memory, and probably show better memory locality. (thanks to
3313 * optimization: DYNAMIC-EXTENT declarations for lists and closures
3314 are treated as requests for stack allocation on the x86-64,
3315 Alpha-32, PPC and SPARC platforms.
3316 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
3317 the wrong file descriptor; implementation of SOCKET-OPEN-P.
3318 (thanks to Tony Martinez)
3320 ** gcing a dead thread can no longer lead to lockups
3321 ** threads block signals until they are set up properly
3322 ** errno is no longer shared by threads
3323 ** interrupt-thread restores the eflags register on x86
3324 ** fixed some lockups due to gc/thread interaction
3325 * fixed some bugs revealed by Paul Dietz' test suite:
3326 ** invalid dotted lists no longer raise a read error when
3327 *READ-SUPPRESS* is T
3328 ** signal an error if a symbol that names a declaration is used
3329 as the name of a type, or vice versa
3330 ** allow using the (declare (typespec var*)) abbreviation for
3331 (declare (type typespec var*)) with all type specifiers
3332 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
3333 ** always return NIL from PPRINT-POP when OBJECT is NIL
3334 ** don't signal errors when pretty-printing malformed LABELS,
3335 FLET or MACROLET forms
3336 ** declarations in a DOLIST body are also in scope for the
3338 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
3340 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
3343 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
3344 * fixed cross-compiler leakages that prevented building a 32-bit
3345 target with a 64-bit host compiler.
3346 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
3347 opened with :IF-EXISTS :OVERWRITE.
3348 * fixed bug 281: error for an invalid qualifier in a short-form method
3349 combination method is not signalled until the faulty method is called.
3350 * bug fix: iteration variable type inferrer failed to deal with open
3351 intervals. (reported by Alan Shields)
3352 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
3353 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
3354 or more runtime options were provided to the sbcl binary.
3355 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
3356 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
3357 * optimization: there's now a fast-path for fixnum arguments in the
3358 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
3359 * optimization: the code generated on x86-64 is more compact thanks
3360 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
3361 * bug fix: floating-point exception handling now partly works on
3362 x86-64. (Thanks to James Knight)
3363 * improvement to the MIPS backend from Thiemo Seufer: C-style
3364 64-bit long long arguments and return values to alien functions
3366 * fixed some bugs revealed by Paul Dietz' test suite:
3367 ** the type-error signalled from WARN has a filled-in DATUM slot.
3368 ** the type-error required when a stream is not associated with
3369 a file has the stream as its datum.
3370 ** type-errors on single-floats on x86-64 no longer have
3371 :INVALID-OBJECT as the datum
3372 ** the type-errors signalled for invalid function names now have
3373 a correct expected type
3374 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
3375 for structures defined with a :TYPE. Documentation strings for
3376 typed structures are no longer immediately discarded
3377 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
3378 broadcast streams and synonym streams. FILE-LENGTH now also works
3379 on broadcast streams.
3381 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
3382 * incompatible change: the --noprogrammer option, deprecated since
3383 version 0.7.5, has been removed. Please use the equivalent
3384 --disable-debugger option instead.
3385 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
3387 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
3388 inoperational for a while now) has been completely removed.
3389 * null lexical environments are now printed as #<NULL-LEXENV>,
3390 significantly reducing the amount of clutter in typical backtraces.
3391 * documentation on weak pointers, finalization, and after GC hooks
3392 has been added to the manual.
3393 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
3394 as other specialized array types, is much faster. SUBSEQ and
3395 COPY-SEQ on such arrays have also been sped up.
3396 * optimization: EQL is now more efficient when at least other argument
3397 is known to be of type (OR FIXNUM (NOT NUMBER)).
3398 * fixed bug: the runtime is now less vulnerable to changes in the
3399 size of the SBCL object on OS X, and virtual memory is reserved for
3400 all spaces that need to be at a fixed address.
3401 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
3402 * fixed bug: finalizers and after GC hooks that cause consing are now
3404 * fixed bug: compiler error messages and summaries are now printed to
3405 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
3406 * fixed inference of the upper bound of an iteration variable.
3407 (reported by Rajat Datta).
3408 * fixed bug 211e: calling local functions with duplicated constant
3409 keyword argument no longer causes a bogus style warning about an
3411 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
3412 ftype declaration to be disregarded. (reported by Dave Roberts)
3413 * fixed bug 373: caused by erronous compilation of references to alien
3414 variables in the runtime on ppc/darwin.
3415 * fixed bug 376: CONJUGATE type deriver.
3416 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
3417 (reported by Baughn on #lisp)
3418 * a cross-compiler bug on non-x86 platforms has been identified and
3419 fixed. (thanks to Bruno Haible)
3420 * improvements to the MIPS runtime code for increased stability.
3421 (thanks to Thiemo Seufer)
3422 * increased the maximimum compact environment size to allow
3423 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
3424 * partial workaround for bug 135: don't name the function we're
3425 calling for hairy cases of EVAL, so as not to accumulate one environment
3426 entry per call to EVAL. (reported by Kevin Reid)
3427 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
3428 * optimization: type testing for non-vector arrays should be faster.
3429 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
3431 * bug fix: setting 31st element of a bit vector to zero did not work
3433 * bug fix: redefining a class definition which failed due to a
3434 previous accessor / function clash now works (but see BUGS entry
3435 #380 for more problems in this area). (thanks to Zach Beane)
3436 * the long form of DEFINE-METHOD-COMBINATION disables method group
3437 checking when given a single method group with pattern *. (thanks
3439 * on x86 compiler supports stack allocation of results of simple
3440 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
3441 * support for building and running on Mac OS X 10.4 "Tiger" has been added
3442 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
3443 * fixed some bugs related to Unicode integration:
3444 ** the restarts for recovering from input and output encoding
3445 errors only appear when there is in fact such an error to
3447 * fixed some bugs revealed by Paul Dietz' test suite:
3448 ** MISC.549 and similar: late transformation of unsafe type
3449 assertions into derived types caused unexpected code
3451 ** SCALE-FLOAT type deriver is less wrong.
3452 ** type derivers for EXP, LOG and similar functions compute result
3453 types for complex arguments better.
3454 ** (MISC.563) CONJUGATE type deriver works for very restricted
3456 ** out-of-line type testers for character strings are available.
3457 ** EQUAL compiler transform understands specialness of objects
3459 ** accessing double-floats stored on the stack now works on x86-64.
3460 ** debugger internals could sometimes create invalid lispobjs,
3461 resulting in GC crashes.
3462 ** MISC.548: type check weakening can convert required type into
3464 ** initialization forms for bindings are not in scope of free special
3467 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
3468 * incompatible change: thread support for non-NPTL systems has
3469 been removed - locking is buggy and unreliable. A threaded
3470 SBCL build will now warn at startup and refuse to create
3471 new threads, unless futex support is detected in the kernel
3472 * incompatible change: the top level REPL now has only an ABORT
3473 restart associated with it, not TOPLEVEL and ABORT as it used to.
3474 TOP and TOPLEVEL are now available as debugger commands for
3475 returning to the top level.
3476 * incompatible change: forms evaluated in the REPL now use the
3477 global optimization policy.
3478 * incompatible change: user- and system-initialization files are
3479 no longer processed with LOAD, but by READ and EVAL; hence the
3480 global optimization policy, startup package, readtable, etc,
3482 * The .fasl file format number has been incremented because of
3483 various incompatible changes.
3484 * internal entry point details and argument counts no longer appear
3485 in backtraces unless explicitly requested by setting
3486 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
3487 * built-in and standard functions no longer have names like "top
3488 level local call to FOO".
3489 * fixed bug 32: functions defined in non-null lexical environments
3490 now have more legible printed representation
3491 * fixed bug 33: functions defined in non-null lexical environemnts
3492 are now more amenable to inspection by INSPECT.
3493 * workaround for bug 354: XEPs no longer appear in backtraces unless
3494 explicitly requested.
3495 * fixed bug: receiving the signal which results from attempting to
3496 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
3497 SIGBUS on other *BSDs) on architectures where the C stack is also
3498 the Lisp stack (x86 and x86-64) from foreign code no longer leads
3499 to debugger confusion or wild instability. (reported by Cheuksan
3501 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
3502 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
3503 (reported by Lutz Euler)
3504 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
3505 compiled code. (reported by Paul Dietz)
3506 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
3507 specialized parameter to a method to something that is not TYPEP
3508 the specializer is now possible.
3509 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
3510 face of package deletion.
3511 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
3512 pathname. (reported by David Tolpin on c.l.l)
3513 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
3514 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
3515 STRING-STREAM and FILE-STREAM, respectively.
3516 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
3517 than previously; in addition, its test suite is now run on build.
3518 (thanks to Luke Gorrie)
3519 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
3520 * optimization: added a immediate representation for single-floats
3522 * fixed some bugs revealed by Paul Dietz' test suite:
3523 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
3524 ** attempting to create a package with a colliding nickname causes
3525 correctable errors to be signalled.
3526 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
3527 ** several x86-64 backend bugs related to sign-extension of immediate
3530 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
3531 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
3532 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
3534 * fixed loading of multiply forward-referenced layouts.
3535 (thanks to Cheuksan Wang)
3536 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
3537 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
3538 (see COMPILE-FILE documentation for details of :PRINT option)
3539 * fixed bugs 19 and 317: fixed-format floating point printing is
3540 more accurate. This also fixes a bug reported by Adam Warner
3541 related to the ~@F format directive.
3542 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
3544 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
3545 dispatch table if the from-char is a dispatch macro character.
3546 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
3547 by the wordsize no longer ignore the last word. (reported by Lutz
3549 * fixed bug in type checking of dynamic-extent variables. (reported
3551 * optimization: sequence traversal functions use their freedom to
3552 coerce function designators to functions.
3553 * optimization: code with many calls to CLOS methods specialized on
3554 CLOS classes has had redundant type checks removed.
3555 * optimization: added declarations to speed up operations that access
3556 the internal character database (for example STRING-UPCASE)
3557 * optimization: comparison operations between floats and sufficiently small
3558 fixnums no longer create extra rationals
3559 * fixed some bugs related to Unicode integration:
3560 ** portions of multibyte characters at the end of buffers for
3561 character-based file input are correctly transferred to the
3562 start of the buffer at the next read.
3563 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
3564 passing it through to OPEN.
3565 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
3566 argument given to internal calls to OPEN.
3567 ** the built-in comment readers (introduced by character sequences
3568 ";" and "#|") are more forgiving to encoding errors; they will
3569 STYLE-WARN and then attempt to resync the stream at a character
3570 boundary. (thanks to Teemu Kalvas)
3571 * fixed some bugs in the x86-64 port:
3572 ** Negative short int return values from c-calls are sign-extended
3574 ** The stack is aligned to 16-bytes for c-calls, as required by
3575 the ABI. (thanks to Cheuksan Wang)
3576 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
3577 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
3578 for enums. (thanks to Vincent Arkesteijn)
3579 ** Multiple small optimizations and bugfixes for floating point
3581 * fixed some bugs revealed by Paul Dietz' test suite:
3582 ** Space, Tab, Linefeed, Return and Page have the invalid
3583 secondary constituent character trait.
3584 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
3586 ** WITH-INPUT-FROM-STRING should only update the index place on
3588 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
3589 works more reliably.
3590 ** Bit-array operations (BIT-AND and similar) worked incorrectly
3591 with one-dimensional arrays with fill pointers.
3592 ** TYPE-OF failed on a complex with an integer realpart and a
3594 ** compiler failure during type inference for the code of form
3595 (IF (EQL X (THE ...)) ...) (MISC.535).
3597 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
3598 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3599 platform. The port supports 61-bit fixnums, large memory spaces
3600 and reloading shared object files.
3601 * enhancement: saving cores with foreign code loaded is now
3602 supported on ppc/Darwin in addition to the previously supported
3604 * enhancement: the statistical profiler now walks deeper into the
3605 call stack for more meaningful call-graphs and accrued time
3606 reports (x86/x86-64 only). It also now reports time spent in
3608 * enhancement: it is now possible to trace most individual methods
3609 of a generic function in addition to tracing the generic function
3611 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
3613 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
3614 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
3615 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
3616 produces an error. (thanks to Vincent Arkesteijn)
3617 * bug fix: NAMESTRING on pathnames with :WILD components in their
3618 directories works correctly. (thanks to Artem V. Andreev)
3619 * fixed bug 125: compiler preserves identity of closures. (reported
3621 * bug fixed: functions with &REST arguments sometimes failed with
3622 "Undefined function" when compiled with (DEBUG 3). (reported by
3624 * bug fix: overflow during compiling of setting element of a bit
3625 vector with constant index and value. (reported by Timmy Douglas)
3626 * build fix: fixed the dependence on *LOAD-PATHNAME* and
3627 *COMPILE-FILE-PATHNAME* being absolute pathnames.
3628 * on x86 compiler partially supports stack allocation of dynamic-extent
3630 * GO and RETURN-FROM do not check the extent of their exit points
3631 when compiled with SAFETY 0.
3632 * fixed some bugs related to Unicode integration:
3633 ** encoding and decoding errors are now much more robustly
3634 handled; it should now be possible to recover even from invalid
3635 input or output to the terminal. (thanks to Teemu Kalvas)
3636 ** provided a first cut at implementing STRING-TO-OCTETS and
3637 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
3638 ** altered the SB-MD5 contributed module slightly, changing the
3639 interface just enough for it to be supportable for builds where
3640 lisp characters are not eight bits.
3641 * fixed some bugs revealed by Paul Dietz' test suite:
3642 ** the FORMATTER-generated functions for ~V[ conditionals require
3643 the correct number of arguments.
3644 ** READ-FROM-STRING returns the mandated second value when applied
3645 to displaced strings.
3646 ** the #\Rubout and #\Backspace characters are treated as invalid
3647 constituent characters by the tokenizer.
3649 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
3650 * new feature: reloading changed shared object files with
3651 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
3652 * new feature: references to foreign variables and functions
3653 can now be compiled and loaded before the corresponding shared
3654 object file is loaded, as long as the foreign definitions are
3655 available at runtime.
3656 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
3657 supported. (thanks to Dan Debertin)
3658 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
3659 just keywords. (thanks to Vincent Arkesteijn)
3660 * fixed bug #331: structure-class instances corresponding to
3661 DEFSTRUCT forms are now created eagerly.
3662 * fixed bug #345: backtraces from calls to undefined functions work
3663 on x86 as well. Related bug #61 is now also partially fixed on x86
3664 (backtraces from throws to unknown catch tags.)
3665 * bug fix: lambda-list parsing is now stricter vrt. order and number
3666 of lambda-list keywords.
3667 * bug fix: as specified by AMOP, an error is signalled if a
3668 class-option appears multiple times in a DEFCLASS form. (reported
3670 * bug fix: RANDOM can be compiled when the compiler derives the type
3671 of its numeric argument as a disjoint set of small integers.
3672 (reported by Paul Dietz)
3673 * bug fix: starting a core saved with shared objects loaded when
3674 those objects are not available no longer causes threaded SBCL to
3675 hang. (reported by Sean Ross)
3676 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
3678 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
3679 argument, which must always be NIL. (reported by Kalle Niemitalo)
3680 * bug fix: printing 1.0d+23 no longer results in an error.
3681 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
3682 * bug fix: structure slot setters preserve evaluation order. (thanks
3684 * fixed some bugs related to Unicode integration:
3685 ** RUN-PROGRAM can allow its child to take input from a Lisp
3686 stream. (reported by Stefan Scholl)
3687 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3688 locales. (reported by Ken Causey)
3689 * fixed some bugs revealed by Paul Dietz' test suite:
3690 ** INCF, DECF and REMF evaluate their place form as specified in
3692 ** FORMATTER expands ~{ ~} iteration directives with V or #
3693 parameters correctly.
3694 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3695 consequent uses no arguments correctly.
3696 ** the system has a partial understanding of the (COMPLEX RATIO)
3698 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3701 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3702 * new feature: a build-time option (controlled by the :SB-UNICODE
3703 keyword feature, enabled by default) for building the system with
3704 support for the entire 21-bit character space defined by the
3706 * new feature: the system now has rudimentary external-format
3707 support; the primary user-visible change at this time is that
3708 characters with the high bit set (such as lower-case-e-acute) will
3709 print correctly to a terminal in a UTF-8 environment.
3710 * minor incompatible change: BASE-CHAR no longer names a class;
3711 however, CHARACTER continues to do so, as required by ANSI.
3712 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3713 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3714 has been moved to the SB-EXT package (temporarily re-exported from
3716 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3717 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3719 * fixed bug #351: better error-handlind and reporting for malformed
3721 * fixed bug #350: bignum-printing is now more memory-efficient,
3722 allowing printing of very large bignums, eg. (expt 2 10000000).
3723 (reported by Bruno Haible)
3724 * fixed bug #302: better primitive-type selection for intersection
3726 * fixed bug #308: non-graphic characters now all have names, as
3727 required. (reported by Bruno Haible)
3728 * bug fix: redefining a class with different superclasses now correctly
3729 removes it from the direct-subclasses of its previous superclasses.
3730 (reported by David Morse)
3731 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3732 new value now works. (reported by Bruno Haible)
3733 * bug fix: correct canonicalization of multiple non-standard slot
3734 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3735 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3736 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3737 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3738 now exists, an signals an error.
3739 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3740 during macroexpansion for non-iteration variables as well. (reported
3741 by Bruno Haible for CMUCL)
3742 * bug fix: Cyclic structures and unprintable objects in compiler
3743 messages no longer cause errors. (reported by Bruno Haible)
3744 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3745 and READ-FROM-STRING all now return a primary value of NIL if
3746 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3747 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3748 (reported by Bruno Haible for CMUCL)
3749 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3750 do not designate a condition. (reported by Bruno Haible for
3752 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3753 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3754 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3755 permitting resolution in favour of any of the conflicting symbols.
3756 (reported by Bruno Haible for CMUCL)
3757 * bug fix: EQUAL compiler optimizations is less aggressive on
3758 strings which can potentially compare true despite having distinct
3759 specialized array element types.
3760 * bug fix: unit enumerations can be defined without dividing by
3761 zero. (thanks to Vincent Arkesteijn)
3762 * FORMAT compile-time argument count checking has been enhanced.
3763 (report from Bruno Haible for CMUCL)
3764 * a partial workaround for the bug 262: the compiler does not try to
3765 inline-expand a local function doing RETURN-FROM from a deleted
3766 BLOCK. (thanks to Peter Denno for the bug report and to David
3767 Wragg for the simple test case)
3768 * fixed some bugs revealed by Paul Dietz' test suite:
3769 ** RENAME-PACKAGE allows all package designators as new package
3771 ** constraint propagation and lambda variable substitution are
3772 more cautious in dealing with partially deleted code.
3773 ** compiler sometimes lost reoptimization passes.
3774 ** CERROR, given a condition as condition designator, passes its
3775 remaining arguments to the continue format control without
3777 ** Case-altering FORMAT directives work correctly on non-ASCII
3779 ** The REAL type specifier handles bounds outside the floating
3780 point ranges without signalling FLOATING-POINT-OVERFLOW.
3781 ** Functions with IR1-transformations can create intercomponent
3782 references to global functions.
3783 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3785 ** FORMAT ~R treats a nil value for its first parameter correctly.
3787 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3788 * enhancement: saving cores with foreign code loaded is now
3789 supported on x86/NetBSD and sparc/Linux in addition to the previously
3790 supported platforms.
3791 * bug fix: on some platforms repeated installations caused multiple
3792 copies of HTML documentation to be installed -- should not happen
3793 any more. (reported by Stefan Scholl)
3794 * bug fix: parsing self-recursive alien record types multiple times
3795 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3796 original patch by Helmut Eller for CMUCL)
3797 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3798 (thanks to Richard Kreuter)
3799 * bug fix: defining classes whose accessors are methods on existing
3800 generic functions in other (locked) packages no longer signals
3801 bogus package lock violations. (reported by François-René Rideau)
3802 * bug fix: special variables as DEFMETHOD parameters no longer have
3803 associated bogus type declarations. (reported by David Wragg and
3805 * bug fix: read-write consistency on streams of element-type
3806 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3807 * bug fix: redefiniton of the only method of a generic function with
3808 no DEFGENERIC no longer emits a full WARNING. In addition,
3809 redefinition of generic functions with no DEFGENERIC to an
3810 incompatible lambda list now signals an error. (thanks to Zach
3812 * bug fix: DEFGENERIC now works even when there's a function of the
3813 same name in an enclosing lexical environment. (thanks to Zach
3815 * fixed compiler failure, caused by instrumenting code during
3816 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3817 * optimization: added loop analysis and improved register allocation
3818 * fixed some bugs revealed by Paul Dietz' test suite:
3819 ** POSITION on displaced vectors with non-zero displacement
3820 returns the right answer.
3821 ** (SIMPLE-STRING) is a valid type specifier for sequence
3823 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3825 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3826 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3828 ** The justification version of the FORMAT ~< directive treats
3829 non-zero minpad parameter correctly.
3831 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3832 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3833 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3834 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3835 the supported interface.
3836 * new feature: Single-stepping of code compiled with DEBUG 2 or
3837 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3838 * new feature: saving cores with foreign code loaded is now
3839 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3840 Timothy Moore's work for CMUCL)
3841 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3842 parameters to * instead of NIL if no initform is supplied.
3843 (reported by Johan Bockgaard)
3844 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3845 correctly when FUNCALL appears as the car of the form. Note:
3846 despite this FUNCALL forms are not currently subject to
3847 compiler-macro expansion. (port of Raymond Toy's fix for the
3848 same from CMUCL, reported by Johan Bockgaard)
3849 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3850 (thanks for Teemu Kalvas)
3851 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3852 case instead of terminating the iteration (thanks for Julian
3853 Squires, Sean Champ and Raymond Toy)
3854 * bug fix: incorrect expansion of defgeneric that caused a style
3855 warning. (thanks for Zach Beane)
3856 * bug fix: slot accessor effective method computation works properly
3857 for classes with multiple non-standard applicable methods on
3858 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3859 * on x86 compiler supports stack allocation of results of LIST and
3860 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3861 CMUCL implementation by Gerd Moellmann)
3862 * fixed some bugs revealed by Paul Dietz' test suite:
3863 ** FORMAT strings with both the ~<~:;~> form of the justification
3864 directive and pretty-printing directives cause an error.
3866 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3867 * incompatible change: the internal functions
3868 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3869 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3870 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3871 instead of the old functions.
3872 * new feature: on platforms where "dladdr" is available foreign
3873 function names now appear in backtraces. (based on Helmut Eller's
3875 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3876 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3878 * documentation: ASDF manual is now distributed with SBCL.
3879 * bug fix: SBCL can now load its contributed modules with REQUIRE
3880 even if the system-provided entries have been removed from
3881 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3883 * bug fix: backtraces involving undefined functions or assembly
3884 routines are more informative. (thanks to Brian Downing)
3885 * bug fix: mutually referent alien structures now work correctly.
3886 (reported by Rick Taube)
3887 * bug fix: structures defined by WITH-ALIEN can be referred to
3888 within other definitions in the same WITH-ALIEN.
3889 * bug fix: division operators (MOD, TRUNCATE and the like) with
3890 constant zero divisors and integer dividends no longer generate
3892 * bug fix: provide default methods for INPUT-STREAM-P and
3893 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3894 * bug fix: improve the detection and resolution of MOP metacycles
3895 (where effective method computation depends on the generic function
3896 having its effective method computed). (reported by Bruno Haible)
3897 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3898 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3899 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3900 * bug fix: pathnames with relative directory components can be
3901 represented relative to default pathnames.
3902 * optimization: in taking the GCD of bignums, reduce the two bignums
3903 to approximately the same size (using Euclid's algorithm) before
3904 applying the more sophisticated binary GCD. (thanks to Juho
3906 * optimization: COUNT on bitvectors now operates word-at-a-time.
3907 * optimization: ASH with a positive, but not necessarily constant,
3908 (leftwards) shift, when in a modular context, is compiled to a
3910 * fixed some bugs revealed by Paul Dietz' test suite:
3911 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3912 if the corresponding argument is NIL.
3913 ** FORMAT directives accepting a minpad parameter treat negative
3915 ** literal commas as character parameters to FORMAT directives are
3917 ** literal spaces directly after ~<Newline> directives within a
3918 format-logical-block (~:< ~@:>) do not induce :FILL-style
3919 conditional newlines.
3920 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3921 as specified: it no longer includes conditional newlines).
3922 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3924 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3925 :PER-LINE-PREFIX argument does not evaluate to a string.
3927 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3928 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3929 the manual for details; for now, package locks can be disabled by
3930 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3931 if no major problems are found then it is likely that they will be
3932 compiled in unconditionally.
3933 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3934 unsupported operators on all platforms. To load a shared library
3935 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3936 object file, link it into a shared library outside of SBCL and
3937 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3939 * bug workaround: ROOM T and the GC were not working together
3940 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3941 reporting facility aren't preserved. That reporting has been
3942 disabled, so now until and unless someone figures out how to make it
3943 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3944 * minor incompatible change: as threatened around sbcl-0.8.0, the
3945 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3946 The symbols are also exported from SB-PCL for backwards
3947 compatibility, but more so than before SB-PCL should be treated as
3948 an implementation-internal package.
3949 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3951 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3952 It is known as of this release not to work on the Alpha, however.
3953 * fixed bug #167: errors signalled due to illegal syntax in method
3954 bodies are now more legible.
3955 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3956 designators and can hence be used with TYPEP.
3957 * fixed bug #333: CHECK-TYPE now ensures that the type error
3958 signalled, if any, has the right object to be accessed by
3959 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3960 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3961 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3963 * fixed bug #334: programmatic addition of slots using specialized
3964 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3965 and :ALLOCATION :CLASS slots.
3966 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3967 float exponents. (rereported by Peter Seibel)
3968 * fixed a bug: #\Space (and other whitespace characters) are no
3969 longer considered to be macro characters in standard syntax by
3970 GET-MACRO-CHARACTER.
3971 * fixed bug: initialization of condition class metaobjects no longer
3972 causes an instance of the condition to be created. (reported by
3974 * fixed bug: it is now possible to have slots such that
3975 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3976 description is neither :INSTANCE nor :CLASS.
3977 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3978 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3979 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3980 non-standard SLOT-DEFINITION-ALLOCATION values.
3981 * fixed bugs: various race conditions handling exiting threads.
3982 CL-PPCRE's thread torture test now passes.
3983 * fixed arguably-a-bug: GC time proportional to number of threads in
3984 system even when most of them are idle
3985 * optimization: improved performance of BIT and SBIT on bit-vectors.
3986 * .fasl file incompatibility: The fasl file version number has
3987 been incremented because of changes associated with package locks.
3989 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3990 * minor incompatible change: the system no longer provides
3991 optimization hints (conditions which are TYPEP
3992 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3993 mode; these hints are still emitted when higher SPEED optimization
3995 * new contrib module: a sampling profiler (profiling by statistical
3996 sampling, rather than by instrumenting functions) is available as
3997 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3998 * the behaviour of the standard function ED is now customizeable by
3999 third parties through a hook variable: see ED's documentation
4000 string for information on the protocol.
4001 * the compiler no longer emits efficiency notes for (FUNCALL X)
4002 when the type of X is uncertain under default optimization
4004 * fixed bug 276: mutating a binding of a specialized parameter to a
4005 method to something that is not TYPEP the specializer is now
4007 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
4008 exhibit the required behaviour on the x86 platform. (thanks to
4009 Peter van Eynde, Eric Marsden and Bruno Haible)
4010 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
4011 even for difficult arguments. (reported by Peter Graves)
4012 * fixed bug 141a: the backquote printer now descends quoted
4014 * fixed another bug in backquote printing: no more destructive
4015 modification of the form's list structure. (reported by Brian
4017 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
4018 move between its address being taken and the call to
4019 interrupt_thread, fixing a crashing race condition.
4020 * the SB-POSIX contrib implementation has been adjusted so that it
4021 no longer exhibits ridiculously poor performance when constructing
4022 instances corresponding to C structs.
4024 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
4025 * minor incompatible change: the sb-grovel contrib now treats C
4026 structures as alien (in the sense of SB-ALIEN) objects rather than
4027 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
4028 has implications for memory management of client code
4029 (sb-grovel-returned objects must now be manually managed) and for
4030 type safety (alien objects now have full types).
4031 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
4032 used to control emission of compiler diagnostics, rather than the
4033 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
4034 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
4035 quality should be considered deprecated.
4036 * install.sh now installs the user manual as well
4037 * (not quite a new documentable feature, but worth considering in
4038 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
4039 beginnings of a semantically meaningful condition hierarchy is
4040 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
4042 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
4043 designator as the defaults argument.
4044 * fixed bug: Displaced arrays whose displaced-to array has become
4045 too small now cause ARRAY-DIMENSION to signal an error, providing
4046 for safer bounds-checking. (reported by Bruno Haible)
4047 * fixed bug: DEFCLASS slot definitions with identical :READER and
4048 :WRITER names now signal a reasonable error. (reported by Thomas
4050 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
4052 * fixed bug: Invalid slot specification errors now print correctly.
4053 (thanks to Zach Beane)
4054 * fixed bug 320: Shared to local slot value transfers in class
4055 redefinitions now happen corrently from superclasses as
4056 well. (reported by Bruno Haible)
4057 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
4059 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
4060 improper lists correctly. (reported by Bruno Haible)
4061 * fixed bug 313: source-transform for <fun-name> was erroneously
4062 applied to a call of a value of a variable with name <fun-name>.
4063 (reported by Antonio Menezes Leitao)
4064 * fixed bug 307: The obsolete instance protocol ensures that
4065 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
4066 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
4067 remove dead unknown-values globs from the middle of the stack.
4068 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
4069 easier to resume long computations after using *BREAK-ON-SIGNALS*
4070 to diagnose and fix failures. (thanks to Nikodemus Siivola)
4071 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
4072 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
4073 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
4074 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
4075 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
4077 * fixed a (fairly theoretical) bug in string printing: if
4078 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
4079 does not have array-element-type equal to the most general string
4081 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
4082 function name. (thanks to Nikodemus Siivola)
4083 * fixed bug: compile-time format string checker failed on
4084 non-closed ~{. (reported by Thomas F Burdick)
4085 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
4086 don't warn on legal loop code involving more than one aggregate
4087 boolean. (thanks to Nikodemus Siivola)
4088 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
4089 in keyword position to MAKE-PACKAGE was not being reported as
4091 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
4092 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
4094 * fixed bugs 280 and 312: the checking for multiple definitions in a
4095 file is less likely to become confused by uses of inline
4097 * fixed bug: the #S reader macro performs the keyword coercion
4098 specified for slot names. (reported by Kalle Niemitalo)
4099 * fixed bug: lambda lists may contain symbols whose names start with
4100 & but are not lambda-list-keywords; their occurrence triggers a
4102 * fixed bug 321: define-method-combination argument lambda lists do
4103 not cause invalid code to be generated when &optional or &aux
4104 variables have default values. (reported by Bruno Haible)
4105 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
4106 have CLOS classes; this appears also to have fixed reported
4107 instability in stack exhaustion detection.
4108 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
4109 MUFFLE-WARNING when no associated restart is present is now
4111 * optimization: rearranged the expansion of various defining macros
4112 so that each expands into only one top-level form in a
4113 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
4115 * optimization: used a previously little-used slot in symbols to
4116 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
4118 * fixed some bugs revealed by Paul Dietz' test suite:
4119 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
4121 ** Fixed an optimization bug related to inheritance of initforms
4122 from local to shared slots.
4123 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
4124 ** CAST optimizer forgot to flush argument derived type.
4125 ** print/read consistency on floats is now orders of magnitude
4126 more likely. (thanks also to Bruno Haible for a similar report
4128 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
4129 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
4130 for objects of type REAL. Make it so.
4131 ** SXHASH is specified (infelicitously) to respect similarity,
4132 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
4133 it so. (thanks to Markus Ziegler)
4134 ** on the Alpha, the compiler succeeds in compiling functions
4135 returning a known number of arguments greater than 63.
4136 ** fixed handling of invalid NIL arguments in keyword position
4138 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
4140 ** provided a readably-printable representation for RANDOM-STATE
4142 ** ensured that pathnames, where they have a namestring, always
4143 print using #P"..." syntax.
4145 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
4146 * Support for the forthcoming 2.0 version of the NetBSD kernel
4147 running on x86 hardware has been added. (thanks to Perry
4148 E. Metzger most immediately, and others for their past work)
4149 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
4150 current release version; SBCL's OpenBSD support had been broken
4151 since about the time of OpenBSD's switch to ELF binary format.)
4152 * [placeholder for DX summary]
4153 ** user code with &REST lists declared dynamic-extent, under high
4154 speed or space and low safety and debug optimization policy.
4155 * The manual has been converted to Texinfo format and the debugger
4156 chapter from the cmucl manual has been added.
4157 * A facility has been added to extract documentation strings from
4158 sbcl and store them as Texinfo-formatted snippets for inclusion in
4159 the manual (via Texinfo's @include directive)
4160 * bug fix: compiler emitted division in optimized DEREF. (thanks for
4161 the test case to Dave Roberts)
4162 * bug fix: multidimensional simple arrays loaded from FASLs had fill
4163 pointers. (reported by Sean Ross)
4164 * bug fix: PROFILE output is printed nicely even for large numerical
4165 values. (thanks to Zach Beane)
4166 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
4167 greater than 32 handle EOF correctly.
4168 * bug fix: on X86 an immediate argument of the IMUL instruction is
4169 correctly printed in disassembly. (thanks to Lutz Euler)
4170 * bug fix: class slots in redefined classes preserve their old
4171 values. (thanks to Bruno Haible and Nikodemus Siivola)
4172 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
4173 succeeds. (reported by Marco Baringer)
4174 * fixed some bugs revealed by Paul Dietz' test suite:
4175 ** READ-SEQUENCE now works on ECHO-STREAMs.
4176 ** RATIONALIZE works more according to its specification. (thanks
4179 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
4180 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
4181 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
4182 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
4183 should matter to you only if you rebind the printer control
4184 variables and then find you want different bindings in the
4185 debugger than in the ordinary execution of your program.)
4186 * The runtime build system has been tweaked to support building
4187 (on SPARC/SunOS) using a C compiler which invokes Sun's own
4188 assembler and linker. (thanks to Nikodemus Siivola)
4189 * Unbound, undefined, undeclared variables now trigger full
4190 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
4191 more often programmer error than deliberate exploitation of undefined
4193 * optimization: the hash algorithm for strings has changed to one
4194 that is less vulnerable to spurious collisions. (thanks to Juho
4196 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
4197 needless bounds checking. (thanks to Juho Snellman)
4198 * optimization: implemented multiplication as a modular
4199 (UNSIGNED-BYTE 32) operation on the PPC backend.
4200 * fixed some bugs revealed by Paul Dietz' test suite:
4201 ** ADJUST-ARRAY now copies the datum in a zero rank array if
4203 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
4204 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
4205 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
4207 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
4209 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
4211 ** ECHO-STREAMs no longer attempt to echo the end of file value to
4212 their output stream on EOF from read.
4213 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
4214 have been read to end-of-file.
4215 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
4217 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
4218 description of determination of which consecutive characters
4220 ** Printing the "Space" character with escaping on now yields "#\\ ",
4221 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
4222 ** Reading floating-point numbers with *READ-BASE* set to a number
4223 less than 10 works correctly.
4224 ** Reading floating-point numbers with *READ-BASE* set to a number
4225 more than 10 works correctly.
4226 ** Printing with *PRINT-READABLY* targets the standard readtable, not
4227 the readtable currently in effect.
4229 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
4230 * minor incompatible change: parsing of namestrings on a physical
4231 (Unix) host has changed; numbers after the final #\. in a
4232 namestring are no longer interpreted as a version field. This is
4233 intented to be largely invisible to the user, except that the
4234 meaning of the namestring "*.*.*" has changed: it now refers to a
4235 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
4236 should usually be replaced by
4237 (make-pathname :name :wild :type :wild :version :wild)
4238 with the added benefit that this is more likely to be portable.
4239 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
4240 option to OPEN now signals an error if the file being opened
4241 exists; this may have an impact on existing code.
4242 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
4243 signals received, on the PowerPC platforms (both Linux and
4244 Darwin). (thanks to Pierre Mai for pointing out the location of
4246 * several fixes on OS X: The system now builds and runs cleanly on
4247 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
4248 (thanks to Brian Mastenbrook)
4249 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
4250 second-resolution: integer multiples of 1/3600 between -24 and 24.
4251 (thanks to Vincent Arkesteijn)
4252 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
4253 type when called with 1 argument; PEEK-CHAR checked type of
4254 PEEK-TYPE only after having read first character from a
4255 stream. (reported by Peter Graves)
4256 * bug fix: the garbage collector now has much better locality
4257 behaviour, and in particular no longer treats all memory as being
4258 exhausted when many small objects point to each other in a deeply
4260 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
4261 recognized as being TYPEP their class.
4262 * bug fix: the PUSHNEW documentation string has been corrected.
4263 (thanks to Vincent Arkesteijn)
4264 * bug fix: defaulting of the value for the last of an atypically
4265 large number of multiple values being bound was not being
4266 performed correctly on the Alpha or PPC platforms
4267 * optimization: implemented multiplication as a modular
4268 (UNSIGNED-BYTE 32) operation on the x86 backend.
4269 * optimization: SEARCH on simple-base-strings can now be open-coded.
4270 (see also contrib/compiler-extras.lisp for inspiration for
4271 teaching the compiler about the Boyer-Moore algorithm).
4272 * value, returned by MAX (and MIN) called with several EQUALP, but
4273 not EQL, arguments now does not depend on compiler settings.
4274 * fixed some bugs revealed by Paul Dietz' test suite:
4275 ** in stack analysis liveness information is propagated from
4276 non-local entry points.
4277 ** pathwise CAST removing failed when the CAST node did not start
4279 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
4280 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
4282 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
4283 host is already defined.
4284 ** RENAME-FILE works on streams instead of signalling an internal
4286 ** PEEK-CHAR uses the current readtable when determining whether
4287 or not a character is whitespace.
4288 ** MERGE-PATHNAMES handles the case when the pathname does not
4289 specify a name while the default-pathname specifies a version.
4290 ** Pathnames now stand a better chance of respecting print/read
4292 ** Attempting to use standardized file system operators with a
4293 pathname with invalid :DIRECTORY components signals a
4295 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
4297 ** DIRECTORY on logical pathnames is more correct.
4298 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
4299 signal a TYPE-ERROR if their argument is not a stream.
4300 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
4301 designator argument does not designate a stream.
4302 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
4303 examining the synonym.
4304 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
4306 ** OPEN and WITH-OPEN-STREAM allow opening streams with
4307 element-type larger than ([UN]SIGNED-BYTE 32).
4309 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
4310 * When built with the :SB-FUTEX feature, threaded builds now take
4311 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
4312 for faster/more reliable mutex and condition variable support.
4313 * Incompatible change (but one you probably shouldn't have been using
4314 anyway): the interface and code for arbitrating between multiple
4315 threads in the same user session has been redesigned.
4316 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
4317 error when called without an explicit environment argument.
4318 (thanks to Nikodemus Siivola)
4319 * bug fix: buffered :DIRECTION :IO streams are less likely to become
4320 confused about their position. (thanks to Adam Warner and Gerd
4322 * bug fix: Pretty printing backquoted forms with unquotations in the
4323 argument list position of various code constructs such as LAMBDA
4324 now works correctly. (reported by Paul Dietz)
4325 * bug fix: Pretty printing unquotations no longer loses all
4326 stream position information.
4327 * optimization: performance of string output streams is now less
4328 poor for multiple small sequence writes.
4329 * optimization: performance of CSUBTYPEP in the presence of complex
4330 expressions involving CONS and NOT many times has been improved.
4331 (reported by Paul Dietz)
4332 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
4334 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
4335 streams for the REPL, for the debugger, and so on. (thanks to
4337 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
4338 * fixed some bugs revealed by Paul Dietz' test suite:
4339 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
4340 is ignored if it is too small, rather than propagating through
4341 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
4342 ** extremely complex negations of CONS types were not being
4343 sufficiently canonicalized, leading to inconsistencies in
4345 ** VALUES tranformer lost derived type.
4347 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
4348 * fixed a bootstrapping bug: the build process no longer assumes
4349 that the various BOOLE-related constants have the same value in
4350 host and target lisps. (noted by Paul Dietz' test suite on an
4351 SBCL binary built from CLISP)
4352 * The system can now be dynamically linked on the MIPS platform,
4353 which enables dynamic loading of foreign code from Lisp. (thanks
4354 to Ralf Baechle for discussions on the MIPS ABI)
4355 * The system now records debugging information for its own source
4356 files in a filesystem-position-independent manner, relative to
4357 the "SYS" logical host.
4358 * fixed a compiler bug: MV-LET convertion did not check references
4359 to the "max args" entry point. (reported by Brian Downing)
4360 * tweaked disassembly notes to be less confident about proclaiming
4361 some instruction as an LRA. (thanks to Brian Downing)
4362 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
4363 now each have their own history, command character, and other
4364 characteristics. (thanks to David Lichteblau)
4365 * fixed some bugs revealed by Paul Dietz' test suite:
4366 ** compiler failure in compiling LOGAND expressions including a
4368 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
4369 shift greater than 32.
4370 ** FLUSH-DEST did not mark blocks for type check regeneration.
4371 ** HANDLER-CASE failed to accept declarations in handler clauses
4372 in some circumstances.
4374 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
4375 * New code in contrib/sb-introspect (still probably not entirely
4376 stable yet) provides some support for smart Lisp development
4377 environments like SLIME.
4378 * The conditions signalled for errors occurring when loading .fasl
4379 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
4380 in a way which should help ASDF recover gracefully.
4381 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
4382 stuff has been cleaned up. If you code contrib/ stuff, this might
4383 affect you, and you can look at contrib/README, contrib/STANDARDS,
4384 and/or the 0.8.4.27 diff to check.
4385 * In full calls the compiler now does not generate checks for declared
4386 argument types for all arguments.
4387 * various threading fixes
4388 ** and some experimental patches which didn't make it into
4389 the main tree for this release, but which are shipped in
4390 contrib/experimental-thread.patch as a possible fix for some
4391 failures (deadlock, spinning...) in GC-intensive multithreaded
4393 * fixed PPC build problem (source code incompatibility of different
4394 library versions): added offsetof() hackery which attempts to divine
4395 where glibc maintainers put uc_mcontext today
4396 * fixed bug 282: compiler does not trust type assertions while passing
4397 arguments to a full call.
4398 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
4399 &OPTIONAL VALUES type parameter.
4400 * fix bug 214: algorithm for noting rejected templates is now more
4401 similar to that of template seletion. (also reported by rydis on
4403 * fixed bug 141b: printing backquoted information readably and prettily
4404 inserts a space where necessary.
4405 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
4406 (CHARACTER 10) are now reported as errors, rather than propagated
4407 as unknown types. (reported by piso on #lisp)
4408 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
4409 with values NIL and :ERROR. (thanks to Milan Zamazal)
4410 * fixed bug 191c: CLOS now does proper keyword argument checking as
4411 described in CLHS 7.6.5 and 7.6.5.1.
4412 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
4413 longer raise an error; further, using a list as a for-as-arithmetic
4414 counter now raises a meaningful error.
4415 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
4416 now understood by sequence creation functions such as MAKE-SEQUENCE
4418 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
4419 a STRING-INPUT-STREAM.
4420 * compiler enhancement: SIGNUM is now better able to derive the type
4422 * type declarations inside WITH-SLOTS are checked. (reported by
4424 * fixed some bugs revealed by Paul Dietz' test suite:
4425 ** incorrect optimization of TRUNCATE for a positive first
4426 argument and negative second.
4427 ** compiler failure in let-convertion during flushing dead code.
4428 ** compiler failure while deriving type of TRUNCATE on an
4429 interval, containing 0.
4430 ** ASH of a negative bignum by a negative bignum count now returns
4432 ** intersection of CONS types now canonicalizes properly, fixing
4433 inconsistencies in SUBTYPEP.
4435 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
4436 * incompatible change: The --disable-debugger command line
4437 option now clobbers the debugger at a more fundamental
4438 level, by redefining #'INVOKE-DEBUGGER instead of by
4439 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
4440 is specified by ANSI to ignore *DEBUGGER-HOOK* and
4441 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
4442 enter the debugger REPL and then suffer recursive errors
4443 because *DEBUG-IO* is also messed up in --disable-debugger mode;
4444 while under the new system, BREAK in --disable-debugger mode
4445 terminates the system just as an unhandled error would.
4446 * fixed compiler performance when processing loops with a step >1;
4447 * bug fix: DOCUMENTATION now retrieves generic function
4448 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
4449 support has been systematized, and now supports the methods
4450 specified by ANSI, along with a default method and a method for
4451 slot documentation. (reported by Nathan Froyd)
4452 * bug fix: effective methods associated with a generic function are
4453 no longer cached over a change of that generic function's method
4454 combination. (reported by Andreas Fuchs)
4455 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
4456 names a non-existent directory. (thanks to Andreas Fuchs)
4457 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
4458 the PPC platform, lead to stack corruption; this has been fixed.
4459 (reported by Rainer Joswig)
4460 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
4461 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
4462 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
4463 arithmetic in general, is now much more reliable on the PPC
4465 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
4466 platform now returns the right answer.
4467 * optimization: restored some effective method precomputation in
4468 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
4469 precomputation is now tunable.
4470 * optimization: compiler-internal data structure use has been
4471 reviewed, and changes have been made that should improve the
4472 performance of the compiler by about 20%.
4473 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
4474 simple-base-strings and simple-bit-vectors is improved.
4475 * optimization: the optimization of 32-bit logical and arithmetic
4476 functions introduced in version 0.8.3 on the x86 has been
4477 implemented on the mips, ppc and sparc platforms; an
4478 implementation of the same facility, but for 64-bit arithmetic,
4479 has been added for the alpha.
4480 * microoptimization: the compiler is better able to make use of the
4481 x86 LEA instruction for multiplication by constants.
4482 * bug fix: in some situations compiler did not report usage of
4483 generic arithmetic in (SPEED 3) policy.
4484 * bug 145b fix: compiler used wrong type specifier while converting
4485 MEMBER-types to numeric.
4486 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
4488 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
4489 index argument now works properly on the Alpha platform.
4490 * bug fix: floating point exception treatment on the Alpha platform
4492 * bug fix: FILE-POSITION works much better on string input and
4493 output streams. (thanks to Nikodemus Siivola)
4494 * bug fix: many threading/garbage collection symptoms sorted.
4495 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
4496 might be pseudo-atomic.
4497 * internal change: Stopping for GC is now done with signals not
4498 ptrace. GC is now done in whichever thread wanted it, instead of
4500 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
4502 * bug fix: result form in DO is not contained in the implicit
4504 * incompatible change: ICR structure is changed; the value part of
4505 CONTINUATION is now called LVAR; corresponding functions are
4506 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
4507 * added type deriver for ISQRT (thanks to Robert E. Brown).
4508 * bug fix: better support for loading from the command line when an
4509 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
4511 * fixed some bugs revealed by Paul Dietz' test suite:
4512 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
4513 ** ROUND and FROUND now give the right answer when given very
4514 small float arguments.
4515 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
4517 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
4518 ** (GCD 0 <negative-integer>) returned <negative-integer>.
4519 ** LCM should return a non-negative integer.
4520 ** PARSE-INTEGER returned the index of a terminator instead of the
4521 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
4522 ** PARSE-INTEGER returned an incorrect index being applied to a
4524 ** LCM with two arguments of 0 returns 0 rather than signalling
4526 ** unsigned addition of a 32-bit constant with the high bit set no
4527 longer causes an internal compiler error on the x86.
4528 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
4529 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
4530 with negative last argument.
4531 ** byte specifiers with zero size and position no longer cause
4532 an error during type derivation.
4533 ** bignum multiplication on the Alpha platform now returns the
4535 * porting: The system now builds on SuSE AMD64, although it still
4536 generates a 32-bit binary.
4537 * .fasl file incompatibility: The fasl file version number has
4538 been incremented (because of the changes to internal compiler
4539 data structures referred to above).
4541 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
4542 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
4543 more accurately, on the Darwin kernel running on PowerPC hardware.
4544 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
4545 * Compiler code deletion notes now signal a condition of type
4546 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
4547 an associated MUFFLE-WARNING restart.
4548 * The compiler now performs limited argument count validation of
4549 constant format strings in FORMAT, and where appropriate in ERROR,
4550 CERROR and WARN. (thanks to Gerd Moellmann)
4551 * New ASDF-INSTALL contrib can be used for automatic download and
4552 installation of third-party Lisp code from CCLAN or other sites
4554 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
4555 which forces another thread to execute a function supplied by the
4557 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
4558 now accept and act upon their :ELEMENT-TYPE keyword argument.
4559 (reported by Martin Atzmueller, Edi Weitz)
4560 * bug fix: FILE-POSITION now accepts position designators up to
4561 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
4562 is the greater. (thanks to Patrik Nordebo)
4563 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
4564 Kalle Olavi Niemitalo)
4565 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
4566 printable. (reported by Eric Marsden)
4567 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
4568 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
4569 * x86 bug fix in control stack exhaustion checking: now shows backtrace
4570 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
4571 (thanks to Stig Sandoe)
4572 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
4573 UNREAD-CHAR now correctly includes the unread character in the
4574 target sequence. (thanks to Gerd Moellmann)
4575 * bug fix in threaded builds: the system can now be suspended and
4576 resumed by shell job control with minimal disruption.
4577 * bug fixes in times and timezones >2038AD
4578 * better handling of "where is GNU make?" problem in build scripts
4579 (thanks to Nikodemus Siivola)
4580 * new optimization: inside a named function any reference to a
4581 function with the same name is considered to be a self-reference;
4582 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
4583 optimization quality.
4584 * new optimization on x86: logical functions and + now have
4585 optimized (UNSIGNED-BYTE 32) versions, which are automatically
4586 used when the result is truncated to 32 bits.
4587 * VALUES declaration is partially enabled.
4588 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
4589 * fixed some bugs revealed by Paul Dietz' test suite:
4590 ** The system now obeys the constraint imposed by
4591 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
4592 types form a lattice under type intersection.
4593 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
4594 ** ASSOC now ignores NIL elements in an alist.
4595 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
4596 and (1+ MOST-POSITIVE-FIXNUM) answers.
4597 ** The addition of a method with invalid qualifiers to a generic
4598 function does not cause an error to be signalled immediately;
4599 a warning is signalled, and the error is generated only on
4600 calling the generic function.
4601 * changed .fasl file version number, in part to add type codes for
4602 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
4603 obscure ANSI requirements
4605 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
4606 * fixed bug 148: failure to inline-expand a local function left
4607 garbage, confusing the compiler.
4608 * fixed bugs 3cd: structure slot readers perform type check if the
4609 slot can have an invalid value (i.e. it is either not initialized
4610 or can be written with a less specific slot writer).
4611 * bug fix: the compiler now traps array references to elements off
4612 the end of an array; previously, the bounds checking in some
4613 circumstances could go off-by-one.
4614 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
4616 * type declarations for array element types now obey the description
4617 on the CLHS page "Declaration TYPE", as per discussions on
4618 sbcl-help around 2003-05-08. This means that a declaration
4619 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
4620 declaration, all references to BAR will be asserted or assumed
4621 (with THE, so dependent on compiler policy) to involve objects of
4622 type FOO. Note that no such declaration is implied in
4623 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
4624 * declared types of functions from the "Conditions"
4625 chapter. (reported by Paul Dietz)
4626 * bug fix: CERROR accepts a function as its first argument.
4627 * bug fix: NTH an NTHCDR accept a bignum as index
4628 arguments. (reported by Adam Warner)
4629 * optimization: character compare routines now optimize comparing
4630 against a constant character. (reported by Gilbert Baumann)
4631 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
4632 argument now works properly on the MIPS platform.
4633 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
4634 * repeated evaluation of the same DEFSTRUCT, a slot of which is
4635 declared to have a functional type, does not cause an error
4637 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
4638 many :DEFAULT-INITARGS. (reported by Istvan Marko)
4639 * fixed bug: if last continuation of a deleted block has a
4640 destination, this destination should be deleted too. (reported by
4642 * fixed a bug in the bootstrap process: the host compiler's values
4643 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
4644 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
4645 test case from Patrik Nordebo)
4646 * improved the ability of the disassembler on the PPC platform to
4647 provide helpful disassembly notes.
4648 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
4649 the class in more cases than previously.
4650 * bug fix: FILE-POSITION now understands :START and :END for
4651 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
4652 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
4653 8) data. (thanks to David Lichteblau)
4654 * bug fix: it is possible to add a method to a generic function
4655 without lambda list.
4656 * bug fix: reader failed to signal END-OF-FILE inside an
4657 object representation. (reported by Nikodemus Siivola)
4658 * fixed some bugs revealed by Paul Dietz' test suite:
4659 ** LAST and [N]BUTLAST should accept a bignum.
4660 ** condition slot accessors are methods.
4661 ** (VECTOR NIL) is a subtype of STRING.
4663 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
4664 * minor incompatible change: some nonsensical specialized lambda
4665 lists (used in DEFMETHOD) which were previously ignored now signal
4667 * minor incompatible change: the system is now aware of the types of
4668 variables in the COMMON-LISP package, and will signal errors for
4669 most violations of these type constraints (where previously they
4670 were silently accepted).
4671 * minor incompatible change: COMPILE-FILE now uses the freedom
4672 afforded (ANSI 3.2.2.3) to use derived function types for
4673 functions defined in the same file. This also permits the system
4674 to warn on static type mismatches and function
4675 redefinition. (Currently it does not work with high DEBUG level.)
4676 * minor incompatible change: VALUES declaration is disabled.
4677 * When issuing notes, the compiler now signals a condition of type
4678 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
4679 restart for use in user handlers. It is expected that the
4680 COMPILER-NOTE condition will eventually become a condition
4681 supertype to a hierarchy of note types, which will then be
4682 handleable in a similar fashion. However, at the moment, no such
4683 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
4684 but it's an implementation detail, not a classification for the
4686 * Changes in type checking closed the following bugs:
4687 ** type checking of unused values (192b, 194d, 203);
4688 ** template selection based on unsafe type assertions (192c, 236);
4689 ** type checking in branches (194bc).
4690 * A short form of VALUES type specifier has ANSI meaning (it has
4691 increased the number of situations when SBCL cannot perform type
4693 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4694 keywords or constants is permissible.
4695 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4696 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4697 classes. (thanks to Antonio Martinez)
4698 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4699 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4700 argument to a pretty-print stream. Instead, it leaves any such
4701 operations to DESCRIBE-OBJECT methods.
4702 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4704 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4705 lambda lists. (thanks to David Lichteblau)
4706 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4707 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4708 (thanks to Gerd Moellmann)
4709 * fixed bug 246: increased compilation speed of long
4710 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4712 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4714 * DEFCONSTANT now throws a condition of type
4715 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4716 constant to a non-EQL value; CONTINUE and ABORT restarts
4717 respectively change and preserve the value.
4718 * fixed bug 63: The code walker, part of the implementation of CLOS,
4719 is now better at handling symbol macros.
4720 * bug fix: There is no longer an internal implementation type named
4721 CL:LENGTH. (reported by Raymond Toy)
4722 * bug fix: In macro-like defining macros/special operators the
4723 implicit block does not enclose the lambda list.
4724 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4725 enclosed in parentheses) are not suitable as type specifiers, and
4726 their use properly signals an error now.
4727 * bug fix: An argument count mismatch for a type specifier in code
4728 being compiled no longer causes an unhandled error at compile
4729 time, but signals a compile-time warning.
4730 * fixed simple vector readable printing
4731 * bug fix: DESCRIBE takes more care over whether the class
4732 precedence list slot of a class is bound before accessing it.
4733 (reported by Markus Krummenacker)
4734 * bug fix: FORMATTER can successfully compile pretty-printer format
4735 strings which use variants of the ~* directive inside.
4736 * bug fix: SEARCH now applies its TEST predicate to the elements of
4737 the arguments in the correct order. (thanks to Wolfhard Buss)
4738 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4739 in type inference. (thanks to Robert E. Brown)
4740 * bug fix: Reading in symbols with an explicit package name of ""
4741 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4742 * fixed some bugs revealed by Paul Dietz' test suite:
4743 ** NIL is now allowed as a structure slot name.
4744 ** Arbitrary numbers, not just REALs, are allowed in certain
4745 circumstances in LOOP for-as-arithmetic clauses.
4746 ** Multiple class redefinitions before slot access no longer
4747 causes a type error.
4748 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4749 association between the name and a class.
4750 ** Generic functions with non-standard method-combination and over
4751 five methods all of which return constants no longer return NIL
4752 after the first few invocations. (thanks to Gerd Moellmann)
4753 ** CALL-NEXT-METHOD with no arguments now passes the original
4754 values of the arguments, even in the presence of assignment.
4755 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4757 ** DISASSEMBLE works with closures and funcallable instances.
4758 ** ADD-METHOD now returns the generic function, not the new method.
4759 ** FIND-METHOD signals an error if the lengths of the specializers
4760 is incompatible with the generic function, even if the ERRORP
4762 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4763 which its argument is a member.
4764 ** DEFCLASS only redefines the class named by its class-name
4765 argument if that name is the proper name of the class;
4766 otherwise, it creates a new class.
4767 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4768 of the UNBOUND-SLOT condition to the name of the slot.
4769 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4770 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4771 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4772 SLOT-MAKUNBOUND in the specified fashion.
4774 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4775 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4776 cross-compilation host. As a consequence, we can now bootstrap our
4777 way up to SBCL starting with a bare gcc toolchain and human-readable
4778 source code (first the source to CLISP, then the source to SBCL).
4779 * A contributed module containing a partial implementation of the
4780 simple-streams interface has been included. (thanks to Rudi
4782 * A contributed module implementing the RFC1321 Message Digest
4783 Algorithm, known as MD5, has been included.
4784 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4785 no longer has any effect, as the code controlled by this feature
4786 has been deleted. (As far as we know, no-one has ever built using
4787 this feature, and its semantics were confused in any case).
4788 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4789 work on conditions (as required by the ANSI specification),
4790 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4791 expected behaviour on conditions. Users should note, however,
4792 that such behaviour is not required by the ANSI specification,
4793 and so use of this behaviour may render their code unportable.
4794 * fixed some bugs revealed by Paul Dietz' test suite:
4795 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4797 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4798 ** SXHASH on condition objects no longer returns NIL.
4799 ** :ALLOCATION :CLASS slots are better treated; their values are
4800 updated on class redefinition, and initforms inherited from
4801 superclasses are applied.
4802 ** REMOVE-METHOD returns its generic function argument even when
4803 no method was removed.
4804 ** SHARED-INITIALIZE now initializes the values of the requested
4805 slots, including those with :ALLOCATION :CLASS.
4806 ** ALLOCATE-INSTANCE now works on structure classes defined via
4807 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4809 ** SLOT-EXISTS-P now works on conditions, as well as structures
4811 ** MAKE-LOAD-FORM now has the required methods on
4812 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4813 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4814 keyword, and now implements the SLOT-NAMES argument.
4815 ** methods with &OPTIONAL arguments no longer allow too many
4816 arguments to be passed in the call without error.
4817 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4818 option is consistent with the required arguments of the generic
4819 function lambda list.
4820 * bug fix: REQUIRE accepts a string designator. (Thanks to
4822 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4823 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4824 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4825 * bug fix: The compiler now checks for duplicated variables in macro
4827 * bug fix: SETQ on globals returns the correct value.
4828 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4829 not a COMPILER-ERROR (followed by some other strange error on
4830 choosing the CONTINUE restart).
4831 * bug fix: make.sh and friends are now more consistent in the way that
4832 they look for GNU "make".
4834 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4835 * experimental native threads support (on x86 Linux >=2.4 only).
4836 This is not compiled in by default: you need to add :SB-THREAD to
4837 the target features. See the "Beyond ANSI" chapter of the manual
4839 * fix for longstanding nonANSIism: The old distinction between
4840 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4841 The return value from CL:FIND-CLASS is now a CLOS class, and
4842 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4843 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4844 * An interface to the MetaObject Protocol, as described in Kiczales,
4845 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4846 MIT Press, 1991, is available from the SB-MOP package.
4847 * incompatible change: the SB-PCL package should now be considered
4848 a private implementation detail, and no longer a semi-private MOP
4850 * minor incompatible change: due to rearrangement for threads, the
4851 control stack and binding stack are now allocated at arbitrary
4852 addresses instead of being hardcoded per-port. Users affected by
4853 this probably have to be doing advanced things with shared
4854 libraries, and will know who they are.
4855 * minor incompatible change: Previously, all --eval forms used were
4856 processed with READ before any of them were processed with EVAL.
4857 Now each --eval form is processed with both READ and EVAL before
4858 the next --eval form is processed. (Thus package operations like
4859 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4860 work as the user might reasonably expect.)
4861 * minor incompatible change: *STANDARD-INPUT* is now only an
4862 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4864 * minor incompatible change: Y-OR-N-P is now character-oriented,
4865 not line oriented. Also, YES-OR-NO-P now works without errors.
4866 (thanks to Antonio Martinez)
4867 * sb-aclrepl module improvements: an integrated inspector, added
4868 repl features, and a bug fix to :trace command.
4869 * Known functions, which cannot be open coded by the backend, are
4870 considered to be able to check types of their arguments. (fixing
4871 a bug report by Nathan J. Froyd)
4872 * fixed a bug in computing method discriminating functions: It is
4873 now possible to define methods specialized on classes which have
4874 forward-referenced superclasses. (thanks to Gerd Moellmann)
4875 * fixed evaluation order in optional entries (reported by Gilbert
4877 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4878 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4879 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4880 required-by-AMOP NAME argument, as well as CLASS and
4881 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4882 * fixed bug 20: DEFMETHOD can define methods using names that are
4883 not the proper names of classes to designate class specializers.
4884 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4885 Unix file descriptors, instead of blowing up. (thanks to Antonio
4887 * Garbage collection refactoring: user-visible change is that a
4888 call to the GC function during WITHOUT-GCING will not do garbage
4889 collection until the end of the WITHOUT-GCING. If you were doing
4890 this you were probably losing anyway.
4891 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4892 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4893 TYPEP the latter but not the former.
4894 * The compiler issues a full WARNING for calls to undefined functions
4895 with names from the CL package.
4896 * MAP-INTO for a vector destination is open coded. (reported by
4897 Brian Downing on c.l.l)
4898 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4899 documentation string.
4900 * fixed some bugs revealed by Paul Dietz' test suite:
4901 ** COPY-ALIST now signals an error if its argument is a dotted
4903 ** Condition slots are now accessed more correctly in the presence
4904 of multiple initargs for a given slot.
4905 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4906 exclude restarts of the same name associated with a different
4908 ** DEFCLASS of forward-referenced classes with another
4909 forward-referenced class in the superclasses list no longer
4911 ** Condition slots are now initialized once each, not multiple
4912 times. (thanks to Gerd Moellmann)
4913 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4915 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4916 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4917 arguments contain duplicated elements.
4918 ** RESTART-CASE understands local macros.
4919 ** RESTART-CASE associates exactly its own restarts with a condition.
4920 ** ENDP in safe mode checks its argument to be of type LIST.
4921 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4922 in question is unbound.
4923 ** Optimized MAKE-INSTANCE functions no longer cause internal
4924 assertion failures in the presence of duplicate initargs.
4925 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4926 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4927 propagated even in the ctor optimized implementation of
4929 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4931 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4932 * a better implementation of SXHASH on (simple) bit vectors,
4933 measured both in execution speed and in distribution of results
4934 over the positive fixnums, has been installed. Likewise, a better
4935 implementation of EQUAL for simple bit vectors is now available.
4936 * fixed CEILING optimization for a divisor of form 2^k.
4937 * fixed bug 240 (emitting extra style warnings "using the lexical
4938 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4939 by Antonio Martinez)
4940 * fixed SXHASH, giving different results for NIL depending on type
4941 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4942 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4943 variable. (found by Rolf Wester)
4944 * SBCL does not ignore type declarations for special
4945 variables. (reported by rif on c.l.l 2003-03-05)
4946 * some bug fixes in contrib/sb-aclrepl/
4947 * fixed some bugs revealed by Paul Dietz' test suite:
4948 ** a bug in the CONS type specifier, whereby the CAR and CDR
4949 types got intertwined, has been fixed;
4950 ** the type system is now able to reason about the interaction
4951 between INTEGER and RATIO types more completely;
4952 ** APPEND, [N]REVERSE and NRECONC check that those their
4953 arguments, which must be proper lists, are really so;
4954 ** An array specialized to be unable to hold elements has been
4955 implemented, as required -- yes, really -- by ANSI;
4956 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4957 on malformed property lists;
4959 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4960 * incompatible packaging change: in line with Unix convention,
4961 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4962 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4963 * REQUIRE and PROVIDE are now optionally capable of doing something
4964 useful. See the documentation string for REQUIRE.
4965 * infrastructure for a managed SBCL contrib system: contributed
4966 modules in this release include:
4967 ** the ASDF system definition facility;
4968 ** an interface to the BSD Sockets API;
4969 ** an ACL-like convenience interface to the repl;
4970 (thanks to Kevin Rosenberg)
4971 ** an implementation of ROTATE-BYTE, with efficient implementation
4973 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4974 gives a closer approximation to the right answer than previously.
4975 (thanks to Raymond Toy)
4976 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4977 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4978 optional environment arguments, as required by ANSI.
4979 * fixed bugs in other functions taking environment objects, allowing
4980 calls with an explicit NIL environment argument to be compiled
4982 * fixed bug 228: primary return values from
4983 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4984 COMPILE or FUNCTION.
4985 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4986 :TYPE will no longer signal errors on innocuous objects.
4987 * fixed bug 231b: SETQ is better at respecting type declarations in
4988 the lexical environment.
4989 * fixed a bug in DEFCLASS: classes named by symbols with no or
4990 unprintable packages can now be defined.
4991 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4992 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4993 * fixed compiler failure related to checking types of functions.
4994 (reported by Robert E. Brown)
4995 * the compiler is now much more consistent in its error-checking
4996 treatment of bounding index arguments to sequence functions: in
4997 (SAFETY 3) code, errors will be signalled in almost all cases if
4998 invalid sequence bounding indices are passed to functions defined
4999 by ANSI to operate on sequences.
5000 * fixed a bug in the build procedure: documentation of SBCL-specific
5001 packages is now preserved and available in the final Lisp image.
5002 * lifted FDEFINITION lookup out of loops in the implementation of
5003 many list operations. (thanks to Robert E. Brown)
5004 * fixed a bug in the reader: the #n# reader macro now works for
5005 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
5006 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
5007 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
5008 E. Brown and Tony Martinez respectively)
5009 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
5010 SLOT-BOUNDP: in particular, it is now able to optimize them much
5011 better, and is now not vulnerable to having packages renamed.
5012 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
5013 always called when a slot is not present in an instance. (thanks
5015 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
5016 longer signal an error on unreading a character following EOF on
5017 the previous constituent stream. (thanks to Tony Martinez)
5018 * fixed some bugs revealed by Paul Dietz' test suite:
5019 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
5020 not just nonnegative fixnums;
5021 ** the logical bit-array operators such as BIT-AND now accept an
5022 explicit NIL for their "opt-arg" argument (to indicate a
5023 freshly-consed result bit-array);
5024 ** ELT now signals an error on an invalid sequence index in safe
5026 ** the type system is now cleverer about negations of numeric
5027 types, and consequently understands the BIGNUM and RATIO types
5029 ** the type system is now cleverer about the interaction between
5030 INTEGER and RATIO types: while bugs still remain, many more
5031 cases are accurately computed;
5032 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
5033 if it is in the last clause;
5034 ** CONSTANTLY now correctly returns a side-effect-free function in
5036 ** DECLARE is no longer treated as a special-operator; in
5037 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
5038 * incremented fasl file version number due to the change in the
5039 DEFSTRUCT-SLOT-DESCRIPTION structure.
5041 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
5042 * minor incompatible change: code processed by the "interpreter" or
5043 EVAL now has a compilation optimization policy of (DEBUG 2)
5044 (changed from (DEBUG 1)) to improve debuggability of interactive
5045 development, and to allow the use of the debug RETURN command in
5047 * an experimental implementation of the RETURN command for the
5048 debugger has been included. (thanks to Frederik Kuivinen)
5049 * fixed bug 62: constraints were not propagated into a loop.
5050 * fixed bug in embedded calls of SORT (reported and investigated by
5052 * fixed some bugs revealed by Paul Dietz' test suite:
5053 ** printing and reading of arrays with some dimensions having
5054 length 0 (thanks to Gerd Moellmann);
5055 ** BOA constructor with &AUX argument without a default value does
5056 not cause a type error;
5057 ** CONSTANTP now returns true for all self-evaluating objects.
5059 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
5060 * fixed bug 127: DEFSTRUCT now does not clobber old structure
5061 accessors that are related by inheritance, as specified in the
5062 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
5063 Valtteri Vuorikoski)
5064 * The compiler is now able to inline functions that were defined in
5065 a complex lexical environment (e.g. inside a MACROLET).
5066 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
5068 * Support for the upcoming FreeBSD-5.0 release has been included.
5069 (thanks to Dag-Erling Smorgrav)
5070 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
5071 effect when it is not in a toplevel context.
5072 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
5073 stand a better chance of being correct. (thanks to Gerd
5075 * fixed bug in COERCE, which now signals an error on coercing a
5076 rational to a bounded real type which excludes the expected
5078 * The compiler is now able to derive types more accurately from the
5079 COERCE and COMPILE functions.
5080 * fixed bug 223: functional binding is considered to be constant
5081 only for symbols in the CL package.
5082 * fixed bug 231: SETQ did not check the type of a variable being set
5083 (reported by Robert E. Brown)
5084 * A new optimization for MAKE-INSTANCE has been included, fixing
5085 various bugs (including relating to :ALLOCATION :CLASS slots and
5086 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
5088 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
5089 ** As required by ANSI, LOOP now disallows anonymous collection
5090 clauses such as COLLECT I in conjunction with aggregate boolean
5091 clauses such as THEREIS (= I 1);
5092 ** LOOP now signals an error when any variable is reused in the
5093 same loop (including the potentially useful construct analogous
5094 to WITH A = 1 WITH A = (1+ A);
5095 ** IT is only a special loop symbol within the first clause of a
5096 conditional loop clause;
5097 ** LOOP with a typed iteration variable over a hashtable now
5098 signals a type error iff it should.
5099 * fixed some other bugs revealed by Paul Dietz' test suite:
5100 ** FILE-STREAM now names the class previously known as FD-STREAM;
5101 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
5102 argument) no longer signals an error;
5103 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
5104 of the slot symbol, rather than using the current package
5105 ((:CONC-NAME "") continues to intern the slot's name in the
5107 * incremented fasl file version number, because of the incompatible
5108 change to the DEFSTRUCT-DESCRIPTION structure, and again because
5109 of the new implementation of DEFINE-COMPILER-MACRO.
5111 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
5112 * Support for building SBCL for MIPS platforms running in
5113 little-endian mode has now been checked in, and basic
5114 functionality on said platforms verified.
5115 * minor incompatible change: PCL now records the pathname of a file
5116 in which methods and the like are defined, rather than its
5118 * minor incompatible change: TRUENAME now considers the truename of
5119 a file naming a directory to be the pathname with :DIRECTORY
5120 component indicating that directory.
5121 * minor incompatible change: a NAMED clause in the extended form of
5122 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
5123 reason for the previous behaviour is unclear.
5124 * more systematization and improvement of CLOS and MOP conformance
5125 in PCL (thanks to Gerd Moellman and Pierre Mai):
5126 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
5128 ** DEFINE-METHOD-COMBINATION no longer signals an error for
5129 primary methods with no specializers;
5130 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
5132 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
5133 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
5134 FORWARD-REFERENCED-CLASSes; error reporting on
5135 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
5137 ** SXHASH on CLOS instances now uses a slot internal to the
5138 instance to return different numbers on distinct instances,
5139 while preserving the same return value through invocations of
5141 ** DEFMETHOD signals errors when methods with longer incongruent
5142 lambda lists are added to generic functions;
5143 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
5144 CLASS, as specified in AMOP;
5145 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
5146 on the order returned by the primary method for classes of
5147 class STANDARD-CLASS;
5148 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
5149 * fixed some bugs shown by Paul Dietz' test suite:
5150 ** DOLIST puts its body in TAGBODY;
5151 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
5153 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
5154 value producing form;
5155 ** if more variables are given to PROGV than values, extra
5156 variables are bound and made to have no value;
5157 ** NSUBSTITUTE on list arguments gets the right answer with
5159 ** ELT signals an error of type TYPE-ERROR when the index argument
5160 is not a valid sequence index;
5161 ** LOOP signals (at macroexpansion time) an error of type
5162 PROGRAM-ERROR when duplicate variable names are found;
5163 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
5164 ** FUNCALL of special-operators now cause an error of type
5166 ** PSETQ now works as required in the presence of side-effecting
5167 symbol-macro places;
5168 ** NCONC accepts any object as its last argument;
5169 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
5171 ** loop-for-as-package does not require a package to be explicitely
5173 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
5175 * fixed bug 166: compiler preserves "there is a way to go"
5176 invariant when deleting code.
5177 * fixed bug 172: macro lambda lists with required arguments after
5178 &REST arguments now cause an error to be signalled. (thanks to
5180 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
5181 bug. (thanks to Matthew Danish)
5182 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
5184 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
5185 arguments are lexically rebound. (thanks to Gerd Moellmann and
5187 * fixed bug 194: error messages are now more informative when there
5188 is no primary method applicable in a call to a generic
5189 function. (thanks to Gerd Moellmann)
5190 * fixed bug in command line argument checking (thanks to Julian
5192 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
5193 (thanks to Matthew Danish)
5194 * incremented fasl file version number, because of the
5195 SXHASH-related changes in the layout of CLOS data structures
5197 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
5198 * minor incompatible change: The runtime (the Unix executable named
5199 "sbcl") is now much pickier about the .core files it will load.
5200 Essentially it now requires .core files to descend from the same
5201 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
5202 as the runtime does. (The intent is to prevent the crashes which
5203 can occur, and which can even be reported as mysterious failures,
5204 when people patch the sources or change the build parameters
5205 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
5206 sbcl and .core files.)
5207 * fixed bug: VALUES-LIST is no longer optimized away.
5208 * fixed bug 142: The FFI conversion of C string values to Lisp
5209 string values no longer conses excessively. (thanks to Nathan
5210 Froyd porting Raymond Toy's fix to CMU CL)
5211 * began to systematize and improve MOP conformance in PCL (thanks to
5212 Nathan Froyd, Gerd Moellman and Pierre Mai):
5213 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
5215 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
5216 ** FINALIZE-INHERITANCE is now called on class finalization;
5217 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
5218 argument precedence order.
5219 * fixed bug 202: The compiler no longer fails on functions whose
5220 derived types contradict their declared type.
5221 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
5222 so it can be non-toplevel.
5223 * The fasl file version number has changed (because of the new
5224 implementation of DEFMACRO).
5225 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
5226 safe code, that any length requirement by their type-specifier
5227 argument is valid. The exceptions to this are described in bug
5229 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
5230 functions now check the types of their inputs as required by ANSI.
5231 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
5232 introduced symbol is DECLAREd to be SPECIAL.
5233 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
5234 * fixed bug: :COUNT argument to sequence functions may be negative
5235 * fixed bug: body of DO-SYMBOLS may contain declarations
5236 * fixed bug: PUSHNEW now evaluates its arguments from left to right
5237 (reported by Paul F. Dietz, fixed by Gerd Moellman)
5238 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
5239 symbol macro only once
5240 * fixed printing of call frame when argument list is unavailable
5241 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
5242 * compiler no longer signals WARNING on unknown keyword
5245 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
5246 * A beta-quality port to the mips architecture running Linux,
5247 based on the old CMUCL backend, has been made. It has been tested
5248 on a big-endian kernel, and works sufficiently well to be able to
5249 rebuild itself; it has not been tested in little-endian mode.
5250 * fixed an inconsistency between gencgc.c and purify.c which made
5251 dumping/loading .core files unreliable
5252 * fixed bug 120a: The compiler now deals correctly with IFs where
5253 the consequent is the same as the alternative, instead of
5254 misderiving the return type. (thanks to Alexey Dejneka)
5255 * fixed bug 113: Logical pathnames are now dumpable (the logical
5256 host is resolved at load-time, throwing an error if it is not
5258 * fixed bug 174: FORMAT's error message is slightly clearer when a
5259 non-printing character is used in a format directive.
5260 * fixed several bugs in compiler checking of type declarations, i.e.
5261 violations of the Python "declarations are assertions" principle
5262 (thanks to Alexey Dejneka)
5263 * fixed several bugs in PCL's error checking (thanks to Gerd
5265 * fixed bug: printing of FILE-ERROR (thanks to Antonio
5267 * fixed bug in compilation of functions as first class values
5268 (thanks to Antonio Martinez-Shotton)
5269 * The compiler's handling TYPE-ERRORs which it can prove will
5270 inevitably happen at runtime has been cleaned up and corrected
5271 in several ways. (thanks to Alexey Dejneka)
5272 * improved argument type checking for various basic arithmetic
5273 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
5274 lavished on them in the past that they can be compiled in many
5275 ways in different special cases
5276 * fixed bug 181: compiler checks validity of user supplied type
5278 * cleaned up code flushing in optimization: Function calls which
5279 should signal errors for safety purposes (e.g. which ANSI says
5280 should signal errors when their arguments are of incorrect type)
5281 are no longer optimized away.
5282 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
5283 * incremented fasl file version number, because changes in the
5284 implementation of sequence functions like COERCE caused
5285 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
5286 in old inline expansions) to become undefined. (Actually these
5287 changes were later undone, so we might very well be binary
5288 compatible with 0.7.7 after all, but leaving the version number
5289 incremented seemed like the simplest and most conservative
5292 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
5293 * An alpha-quality port to the parisc architecture running Linux,
5294 based on the old CMUCL backend, has been made. This, even more so
5295 than the other backends, should be considered still a work in
5296 progress; known problems include that the Linux kernel in 64-bit
5297 mode does not propagate the correct sigcontext structure to
5298 userspace, and consequently SBCL on a parisc64 kernel will not
5300 * fixed bug 189: The compiler now respects NOTINLINE declarations for
5301 functions declared in FLET and LABELS. (I.e. "LET conversion" is
5302 suppressed.) Also now that the compiler is looking at declarations
5303 in the environment, it checks optimization declarations as well,
5304 and suppresses inlining when (> DEBUG SPEED).
5305 * More fixes have been made to treatment of floating point exception
5306 treatment and other Unix signals. In particular, floating point
5307 exceptions no longer cause Bus errors on the SPARC/Linux platform.
5308 * The detection and handling of control stack exhaustion (infinite
5309 or very deeply nested recursion) has changed. Stack exhaustion
5310 detection is now done by write-protecting pages at the OS level
5311 and applies at all optimization settings; when found, a
5312 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
5313 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
5314 be caught using IGNORE-ERRORS.
5315 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
5316 correctly when transforming recursive LABELS functions to LETs.
5317 (thanks to Alexey Dejneka)
5318 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
5319 that are names of constants or global variables.
5320 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
5321 alien routines with docstrings.
5322 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
5323 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
5325 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
5326 (thanks to Eric Marsden)
5327 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
5328 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
5329 * Bug fix: The SPARC backend can now compile functions involving
5330 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
5331 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
5332 to a functions expecting a PATHNAME-DESIGNATOR.
5333 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
5334 lambda lists. (thanks to Alexey Dejneka)
5335 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
5336 functions so that EXPORTing the name of the class doesn't cause
5337 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
5338 to Antonio Martinez for reporting this)
5339 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
5340 constant-folded without failing an assertion. (thanks to Einar
5341 Floystad Dorum for reporting this)
5342 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
5343 types are now dealt with more correctly by the compiler.
5344 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
5345 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
5346 behaviour analogous to RENAME-FILE. This puts its behaviour more
5347 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
5349 * The fasl file version number has changed again. (because of the
5350 bug fix involving the names of PCL MAKE-INSTANCE functions)
5352 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
5353 * bug fix: Floating point exceptions are treated much more
5354 consistently on the x86/Linux and PPC/Linux platforms.
5355 * Array initialization with :INITIAL-ELEMENT is now much faster for
5356 cases when the compiler cannot open code the array creation, but
5357 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
5358 array accesses have also seen a speed increase.
5359 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
5360 specified. (This was at the root of some bad interactions between
5361 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
5363 * bug fix: Internal error arguments for undefined functions are now
5364 computed correctly on the PPC/Linux platform.
5365 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
5366 Raymond Toy's patch for CMU CL)
5367 * Support for the Solaris 9 operating environment has been included
5368 (thanks to Daniel Merritt)
5369 * A very ugly but hopefully complete draft of the missing FFI chapter
5370 of the manual has been created by reformatting the corresponding
5371 CMU CL manual chapter into (currently very ugly and incoherent)
5372 DocBook and bringing it up to date for SBCL behavior. Thus, the
5373 manual is now essentially complete, at least by my extreme
5374 once-and-only-once standards, whereby it's acceptable to refer to
5375 the doc strings of SB-EXT functions as the primary documentation.
5376 * The fasl file version number has changed again, due to cleanup of
5377 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
5378 is no longer a static symbol.)
5380 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
5381 * SBCL now builds with OpenMCL (version 0.12) as the
5382 cross-compilation host; also, more progress has been made toward
5383 bootstrapping under CLISP.
5384 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
5386 * bug 158 fixed: The compiler can now deal with integer loop
5387 increments different from 1; fixing this turned out also to fix
5389 * bug 169 fixed: no more bogus warnings about using lexical bindings
5390 despite the presence of perfectly good SPECIAL declarations (thanks
5391 to David Lichteblau)
5392 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
5393 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
5394 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
5396 * bug 180 fixed: Method combination specifications no longer ignore
5397 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
5398 * bug fix: Structure type predicate functions now check their argument
5399 count as they should.
5400 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
5401 correctly. (thanks to Pierre Mai)
5402 * minor incompatible change: The --noprogrammer option is deprecated
5403 in favor of the new --disable-debugger option, which is very similar.
5404 (The major difference is that it takes effect at a slightly different
5405 time at startup, causing handling of errors in --sysinit and
5406 --userinit files will be affected differently.) The
5407 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
5408 been added to allow this functionality to be controlled from ordinary
5409 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
5410 maintainers, who might want to run non-interactive scripts to
5411 build SBCL cores which will later be used interactively.)
5412 * minor incompatible change: The LOAD function no longer, when given
5413 a wild pathname to load, loads all files matching that pathname.
5414 Instead, an error of type FILE-ERROR is signalled.
5416 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
5417 * bug 147 fixed: The compiler preserves its block link/count
5418 invariants more correctly now so that it doesn't crash. (thanks
5420 * Dynamic loading of object files in OpenBSD is now supported. (thanks
5422 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
5423 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
5424 no-value-for-this-character as NIL (as specified by ANSI).
5425 * HOST-NAMESTRING on physical pathnames now returns a string that is
5426 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
5427 (thanks to Christophe Rhodes)
5428 * The Alpha port handles icache flushing more correctly. (thanks to
5430 * More progress has been made toward bootstrapping under CLISP. (thanks
5431 to Christophe Rhodes)
5432 * The fasl file format has changed again, because dynamic loading
5433 on OpenBSD (which has non-ELF object files) motivated some cleanups
5434 in the way that foreign symbols are transformed and passed around.
5435 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
5436 is no longer treated as whitespace by the reader, but instead as
5437 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
5438 |A
\7fB|, instead of A as it used to.
5440 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
5441 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
5442 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
5443 * SBCL now runs on the PPC archtiecture under Linux. It actually did
5444 this as of 0.7.1.45, but was left out of the previous news section
5445 (thanks to Dan Barlow)
5446 * SBCL now runs on the Solaris operating system on SPARC architectures
5447 (thanks to Christophe Rhodes's port of the CMUCL runtime)
5448 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
5449 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
5450 * SPARC backend cleanups, allowing builds of cores optimized for V8
5451 and V9 SPARCS, and also emission of code targeted to a particular
5452 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
5454 * SBCL is closer to bootstrapping under CLISP, thanks to various
5455 fixes by Christophe Rhodes.
5456 * The fasl file format has changed again, to allow the compiler's
5457 INFO database to support symbol macros.
5458 * The user manual (in doc/) is formatted into HTML more nicely.
5459 (thanks to coreythomas)
5460 * The system is smarter about SUBTYPEP relationships, especially
5461 those involving NOT types (including types such as ATOM which are
5462 represented internally using NOT types). Thus SUBTYPEP is less
5463 likely to return (VALUES NIL NIL) in general, and in particular
5464 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
5466 * The fasl file format has changed again, because the internal
5467 representation of types now includes a new slot to support the new
5468 SUBTYPEP-of-NOT-types logic.
5469 * (not a change in the main branch of SBCL, but a related prototype
5470 which can hopefully be merged into the main branch of SBCL in the
5471 future:) Brian Spilsbury has produced a Unicode-enabled variant of
5472 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
5473 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
5474 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
5475 dispatch macro character combinations. (thanks to Alexey Dejneka)
5476 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
5477 that superficially look like logical namestrings correctly.
5478 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
5480 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
5481 default supplied-p) for &optional and &key arguments. (thanks to
5484 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
5485 * incompatible change: The compiler is now less aggressive about
5486 tail call optimization, doing it only when (> SPACE DEBUG) or
5487 (> SPEED DEBUG). (This is an incompatible change because there are
5488 programs which relied on the old CMU-CL-style behavior to optimize
5489 away their unbounded recursion which will now die of stack overflow.)
5490 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
5491 for non-GENCGC systems has been increased to 20M (since that
5492 seems much closer to the likely performance optimum for modern
5493 systems than the old 4M value was)
5494 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
5495 and *DEBUG-PRINT-LEVEL*
5496 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
5497 of CMU CL's support for SPARC, and various endianness and other
5498 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
5499 * new syntactic sugar for the Unix command line: --load foo.bar is now
5500 an alternate notation for --eval '(load "foo.bar")'.
5502 ** The system now detects stack overflow and handles it gracefully,
5503 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
5504 optimization settings. (This is a good thing in general, and
5505 its introduction in this version should be particularly timely
5506 for anyone whose code fails because of suppression of tail
5508 ** The system now hunts for the C variable "environ" in a more
5509 devious way, to avoid segfaults when the C library version differs
5510 between compile time and run time. (thanks to Christophe Rhodes)
5511 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
5512 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
5513 ** The compiler no longer issues bogus style warnings for undefined
5514 classes in the same source file as the DEFCLASSes which defined
5515 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
5517 ** fixes in CONDITION class precedence list for undefined function
5518 errors (thanks to Alexei Dejneka)
5519 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
5520 correctly. (thanks to Dan Barlow)
5521 ** portability fixes aiming at bootstrapping under CLISP (thanks
5522 to Dave McDonald and Christophe Rhodes)
5523 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
5524 ** fixes in type translation and and type inference (thanks to
5526 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
5527 ** various fixes in the new ports (thanks to Dan Barlow)
5528 * several changes related to debugging:
5529 ** suppression of tail recursion, as noted above
5530 ** stack overflow detection, as noted above
5531 ** The default implementation of TRACE has changed. :ENCAPSULATE T
5532 is now the default. (For some time encapsulation has been more
5533 reliable than the breakpoint-based :ENCAPSULATE NIL
5534 implementation, at least on X86 systems; and I just noticed that
5535 encapsulation also seems closer to the spirit of the ANSI
5538 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
5540 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
5541 up properly again. (There was a packaging bug in 0.7.0 which
5542 left their definitions in SB-SYS::LOAD-FOREIGN and
5543 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
5544 vital for most things which interface to C-level interfaces,
5545 like extensions working with sockets or databases or
5546 Perl-compatible regexes or whatever, and the need to fix
5547 this bug is the main reason that 0.7.1 was released so
5549 ** DEFGENERIC is now choosier about the methods it redefines, so that
5550 reLOADing a previously-LOADed file containing DEFGENERICs does
5551 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
5552 cycle now works as it should. (thanks to Alexey Dejneka)
5553 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
5554 fixed by Christophe Rhodes. (He actually submitted this patch
5555 months ago, and I delayed until after 0.7.0.)
5556 ** Bug 111 (internal compiler confusion about runtime checks on
5557 FUNCTION types) was fixed by Alexey Dejneka.
5558 * Some internal cleanups (getting rid of variables which aren't
5559 needed now that the byte interpreter is gone) caused the fasl
5560 file format number to change again.
5562 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
5563 * major incompatible change: The default fasl file extension, i.e. the
5564 default extension for files produced by COMPILE-FILE, has changed
5565 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
5567 ** There are many changes in the implementation of the compiler.
5568 SBCL is now essentially a compiler-only implementation of ANSI
5569 Common Lisp. EVAL still "interprets" a few special cases, but
5570 almost all the interesting cases are handled by creating
5571 a LAMBDA expression, calling COMPILE on it, then calling
5572 FUNCALL on the result.
5573 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
5574 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
5575 Since the code is newer, there might still be some new bugs
5576 (though not as many as before Martin Atzmueller's fixes:-). But
5577 the new code is substantially simpler and clearer, and hopefully
5578 any remaining bugs will be simpler, less fundamental, and more
5579 fixable then the bugs in the old code.
5580 ** The revised compiler is still a little unsteady on its feet.
5582 *** The debugging information it produces (particularly the names
5583 of FUNCTION objects) is sometimes much less useful than what
5584 the old compiler produced.
5585 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
5586 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
5587 within a MACROLET) has been temporarily weakened.
5588 ** There are new compiler optimizations for various functions:
5589 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
5590 FIND-IF-NOT, POSITION-IF-NOT, and FILL
5591 *** the math functions TRUNCATE, FLOOR, and CEILING
5592 *** the function-of-all-trades COERCE
5593 Mostly these should be transparent, but there's one
5594 potentially-annoying problem (bug 117): when the compiler
5595 inline-expands a function and does type analysis on the result,
5596 it can create control paths which have type mismatches, and
5597 when it can't prove that those control paths aren't taken,
5598 it will issue WARNINGs about the type mismatches. This is
5599 a particular problem in practice for the new sequence functions.
5600 It's not clear how this should be fixed, and for now, a
5601 workaround is given in the entry for 117 in the BUGS file.
5602 ** (Because of the interaction between the two previous items --
5603 occasional inlining problems and new inline expansions -- some
5604 of the new sequence function optimizations won't really kick in
5605 completely until debugging information, and then inlining, are
5606 straightened out in some future version.)
5607 * minor incompatible changes:
5608 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
5609 DIRECTORY no longer implicitly promotes NIL slots of its
5610 pathname argument to :WILD. In particular, when you ask for the
5611 contents of a directory (which you used to be able to do without
5612 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
5613 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
5614 ** changes in behavior that ANSI explicitly defines to be
5615 implementation dependent:
5616 *** The new compiler-only implementation still conforms with ANSI,
5617 but acts a little different than before. Besides the obvious
5618 changes in performance tradeoffs (that the cost per form passed
5619 to EVAL has gone up, and the cost per form executed by EVAL
5620 has gone down), the behavior of the system changes a little
5621 because there are no longer any interpreted function objects.
5622 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
5623 e.g. doing COMPILE on the output of interactive DEFUN is
5625 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
5627 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
5628 has changed from (:CL) to NIL.
5629 *** The CHAR-NAME of unprintable ASCII characters which, unlike
5630 e.g. #\Newline and #\Tab, don't have names specified in the
5631 ANSI Common Lisp standard, is now based on their ASCII symbolic
5632 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
5633 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
5634 are no longer used for output.
5635 ** changes in internal implementation constants:
5636 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
5637 4 million. (If your application spends a lot of time GCing and
5638 you have a lot of RAM, you might want to experiment with
5639 increasing it even more.)
5640 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
5641 However, almost all old code should still continue to work without
5642 immediate update, as SB-C-CALL is now a (deprecated) nickname
5644 ** Old operator names in the style DEF-FOO are now deprecated in
5645 favor of new corresponding names DEFINE-FOO, for consistency with
5646 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
5647 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
5648 internal symbols, but a few supported extensions like
5649 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
5650 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
5651 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
5652 etc. as you get deeper into recursive calls to the debugger
5653 command loop, instead of the old "5]", "5]]", "5]]]"
5654 sequence. (I was motivated to do this when squabbles between
5655 ILISP and SBCL left me very deeply nested in the debugger. In the
5656 short term, this change will probably provoke more ILISP/SBCL
5657 squabbles, but hopefully it will be an improvement in the long run.)
5658 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
5659 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
5660 function, since declaiming return types involving aliens is
5661 (1) annoyingly messy to do by hand and (2) vital to efficient
5662 compilation of code which calls such functions.
5663 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
5664 longer reexported by the SB-EXT package. They're solely useful
5665 for alien code, so it seems more logical that you should get
5666 them from the SB-ALIEN package, not in SB-EXT.
5667 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
5668 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
5669 features. Instead, the code that they used to control is always
5670 built into the system.
5671 * many other bug fixes
5672 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
5673 advantage of the new EVAL-WHEN stuff and to clean them up in
5674 general, and they are now more ANSI-compliant in a number of
5675 ways. Martin Atzmueller is responsible for a lot of this.
5676 ** Besides the cleanups discussed above, Martin Atzmueller fixed
5678 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
5679 *** correct ERROR type for various file operations
5680 *** some fixes for Lisp streams
5681 *** DEFMETHOD syntax checking
5682 *** changing old weird representation of debug information as
5683 strings (which, among their other deficiencies, don't transform
5684 correctly when you rename packages, and don't change their
5685 print representation when you change things like *PACKAGE*
5686 and *PRINT-LENGTH*) to symbols and lists of symbols
5687 He also made several improvements and fixed several bugs in DESCRIBE.
5688 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5690 *** misbehavior of WRITE-STRING/WRITE-LINE
5691 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5692 and several other LOOP problems as well
5693 *** DIRECTORY when similar filenames are present
5694 *** DEFGENERIC with :METHOD options
5695 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5696 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5697 *** argument ordering in FIND with :TEST option
5698 *** mishandled package designator argument in APROPOS-LIST
5699 *** various problems in the backquote readmacro
5700 *** a bug in APROPOS
5701 *** probably some others that I'm not describing very well here,
5702 since the CVS log documents them by reference to sbcl-devel
5703 messages, and the SourceForge archives aren't working well.:-(
5704 ** Dan Barlow improved the Alpha port (and is making progress on the
5705 PPC port, for those of you who think different).
5706 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5707 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5708 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5709 continues to work on the SPARC port (for those of you in a position
5710 to look down upon our little PC-compatible boxes from a great height).
5711 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5712 and uses that copy, rather than the current dynamic value, when
5713 it's trying to decide whether to truncate output. Thus e.g.
5714 (let ((*print-lines* 50))
5715 (pprint-logical-block (stream nil)
5717 (let ((*print-lines* 8))
5718 (print (aref possiblybigthings i) stream)))))
5719 should now truncate the logical block only at 50 lines, instead of
5720 often truncating it at 8 lines, as it did before.
5721 * The doc/cmucl/ directory, containing old CMU CL documentation
5722 from the time of the fork, is no longer part of the base system.
5723 SourceForge has shut down its anonymous FTP service, and with it
5724 my original plan for distributing the old CMU CL documentation
5725 there. For now, if you need these files you can download an old
5726 SBCL source release and extract them from it.
5727 * The fasl file version number changed again, for dozens of reasons,
5728 some of which are apparent above.
5730 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5731 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5732 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5733 patch, so that DISASSEMBLE output is much nicer.
5734 * The code in the SB-PROFILE package now seems reasonably stable.
5735 I still haven't decided what the final interface should look like
5736 (I'd like PROFILE to interact cleanly with TRACE, since both
5737 facilities use function encapsulation) but if you have a need
5738 for profiling now, you can probably use it successfully with
5739 the current CMU-CL-style interface.
5740 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5741 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5742 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5743 link now returns the dangling link itself, and for similar
5744 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5745 link itself. (In these cases the old code signalled an error and
5746 looped endlessly, respectively.) Thus, DIRECTORY now works even
5747 in the presence of dangling and cyclic symbolic links.
5748 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5749 is now a supported extension again, since the consensus on
5750 sbcl-devel was that it can be useful for ordinary development
5751 work, not just for debugging SBCL itself.
5752 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5753 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5754 that currently-defined functions might be redefined later with
5755 different return types.
5756 * Hash tables can be printed readably, as inspired by CMU CL code
5757 of Eric Marsden and SBCL code of Martin Atzmueller.
5758 * better error handling in CLOS method combination, thanks to
5759 Martin Atzmueller porting Pierre Mai's CMU CL patches
5760 * more overflow fixes for >16Mbyte I/O buffers
5761 * A bug in READ has been fixed, so that now a single Ctrl-D
5762 character suffices to cause end-of-file on character streams.
5763 In particular, now you only need one Ctrl-D at the command
5764 line (not two) to exit SBCL.
5765 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5767 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5768 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5769 does the right thing.
5770 * The implementation of some type tests, especially for CONDITION
5771 types, is now tidier and maybe faster, due to CMU CL code
5772 originally by Douglas Crosher, ported by Martin Atzmueller.
5773 * Some math functions have been fixed, and there are new
5774 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5775 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5776 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5777 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5778 likely to be built into sbcl-0.7.0.)
5779 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5780 CL, ported to SBCL by Martin Atzmueller)
5781 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5782 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5783 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5784 * There's a new slam.sh hack to shorten the edit/compile/debug
5785 cycle for low-level changes to SBCL itself, and a new
5786 :SB-AFTER-XC-CORE target feature to control the generation of
5787 the after-xc.core file needed by slam.sh.
5788 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5789 COMPILE-FILE is no longer supported, so that now every function
5790 gets an entry point, so that block compilation looks a little
5791 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5792 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5793 returns the number of bytes consed since the system started,
5794 rather than the number consed since the first time the function
5795 was called. (The new definition parallels ANSI functions like
5796 CL:GET-INTERNAL-RUN-TIME.)
5797 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5798 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5799 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5800 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5801 * Fasl file version numbers are now independent of the target CPU,
5802 since historically most system changes which required version
5803 number changes have affected all CPUs equally. Similarly,
5804 the byte fasl file version is now equal to the ordinary
5807 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5808 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5809 is no longer recognized. I apologize for this, because it was
5810 listed in SB-EXT as a supported extension, but I found that
5811 its existing behavior was poorly specified, as well as incorrectly
5812 specified, and it looked like too much of a mess to straighten it
5813 out. I have enough on my hands trying to get ANSI stuff to work..
5814 * many patches ported from CMU CL by Martin Atzmueller, with
5815 half a dozen bug fixes in pretty-printing and the debugger, and
5816 half a dozen others elsewhere
5817 * fixed bug 13: Floating point infinities are now supported again.
5818 They might still be a little bit flaky, but thanks to bug reports
5819 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5820 as flaky as they were.
5821 * The --noprogrammer command line option is now supported. (Its
5822 behavior is slightly different in detail from what the old man
5823 page claimed it would do, but it's still appropriate under the
5824 same circumstances that the man page talks about.)
5825 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5826 are now supported, and enabled by default. Thus, the compiler can
5827 handle many floating point and complex operations much less
5828 inefficiently. (Thus e.g. you can implement a complex FFT
5830 * The compiler now detects type mismatches between DECLAIM FTYPE
5831 and DEFUN better, and implements CHECK-TYPE more correctly, and
5832 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5833 thanks to patches from Martin Atzmueller.
5834 * various fixes to make the cross-compiler more portable to
5835 ANSI-conforming-but-different cross-compilation hosts (notably
5836 Lispworks for Windows, following bug reports from Arthur Lemmens)
5837 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5838 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5839 fixed thanks to Pierre Mai's CMU CL patches.
5840 * fixes to keep the system from overflowing internal counters when
5841 it tries to use i/o buffers larger than 16M bytes
5842 * fixed bug 45a: Various internal functions required to support
5843 complex special functions have been merged from CMU CL sources.
5844 (When I was first setting up SBCL, I misunderstood a compile-time
5845 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5846 * improved support for type intersection and union, fixing bug 12
5847 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5848 more obscure bugs as well
5849 * some steps toward byte-compiling non-performance-critical
5850 parts of the system, courtesy of patches from Martin Atzmueller
5851 * Christophe Rhodes has made some debian packages of sbcl at
5852 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5853 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5854 stable, but are nonetheless usable. When he's ready, I'd be happy
5855 to add them to the SourceForge "File Releases" section. (And if
5856 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5857 * new fasl file format version number (because of changes in
5858 internal representation of (OR ..) types to accommodate the new
5859 support for (AND ..) types, among other things)
5861 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5862 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5864 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5866 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5867 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5868 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5869 * DESCRIBE now works on structure objects again.
5870 * Most function call argument type mismatches are now handled as
5871 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5872 know whether the function will be redefined before the call is
5873 executed. (The compiler could flag local calls with full WARNINGs,
5874 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5875 it doesn't keep track of enough information to know whether calls
5876 are local in this sense.)
5877 * Compiler output is now more verbose, with messages truncated
5878 later than before. (There should be some supported way for users
5879 to override the default verbosity, but I haven't decided how to
5880 provide it yet, so this behavior is still controlled by the internal
5881 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5882 src/compiler/ir1util.lisp.)
5883 * Fasl file format version numbers have increased again, because
5884 support for the Gray streams extension changes the layout of the
5885 system's STREAM objects.
5886 * The Gray subclassable streams extension now works, thanks to a
5887 patch from Martin Atzmueller.
5888 * The full LOAD-FOREIGN extension (not just the primitive
5889 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5890 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5891 but like most other programs, it defaults to copying the Unix
5892 environment from the original process instead of starting the
5893 new process in an empty environment.
5894 * Extensions which manipulate the Unix environment now support
5895 an :ENVIRONMENT keyword option which doesn't smash case or
5896 do other bad things. The CMU-CL-style :ENV option is retained
5897 for porting convenience.
5898 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5899 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5901 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5903 * A patch from Martin Atzmueller seems to have solved the SIGINT
5904 problem, and as far as we know, signal-handling now works cleanly.
5905 (If you find any new bugs, please report them!)
5906 * The system no longer defaults Lisp source file names to types
5907 ".l", ".cl", or ".lsp", but only to ".lisp".
5908 * The compiler no longer uses special default file extensions for
5909 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5910 seems to expect a single default extension for all compiled code,
5911 and there's no compelling reason to try to stretch the standard
5912 to allow two different extensions.) Instead, byte-compiled files
5913 default to the same extension as native-compiled files.
5914 * Fasl file format version numbers have increased again, because
5915 a rearrangement of internal implementation packages made some
5916 dumped symbols in old fasl files unreadable in new cores.
5917 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5918 many fewer weird special cases.
5919 * Bug #17 (differing COMPILE-FILE behavior between logical and
5920 physical pathnames) has been fixed, and some related misbehavior too,
5921 thanks to a patch from Martin Atzmueller.
5922 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5923 by Tim Moore, ported to SBCL by Martin Atzmueller.
5924 * Martin Atzmueller fixed several filesystem-related problems,
5925 including bug #36, in part by porting CMU CL patches, which were
5926 written in part by Paul Werkowski.
5927 * More compiler warnings in src/runtime/ are gone, thanks to
5928 more patches from Martin Atzmueller.
5929 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5932 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5934 * DESCRIBE now works on CONDITION objects.
5935 * The debugger now handles errors which arise when trying to print
5936 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5938 * The build system now uses an additional file, customize-target-features.lisp,
5939 to allow local modifications to the target *FEATURES* list. (The point of
5940 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5941 debugging features enabled, without having to worry about propagating it
5942 into everyone's system when I do a "cvs update".) When no
5943 customize-target-features.lisp file exists, the target *FEATURES* list
5944 should be constructed the same way as before.
5945 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5946 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5947 warn about behavior which is undefined under the ANSI spec. Note: This
5948 is specified by ANSI, but it's not very popular with programmers.
5949 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5950 macro in the SBCL sources for an example of a workaround which you
5951 might use to make portable ANSI-standard code which does what you want.
5952 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5953 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5954 when it's used as a non-toplevel form. (This is required in order
5955 to implement the DEFCONSTANT-EQX macro.)
5956 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5957 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5958 funny things, due to bugs in the implementation of EVAL-WHEN
5959 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5960 non-toplevel DEFCONSTANTs are uncommon.)
5961 * The core file version number and fasl file version number have been
5962 incremented, because the old noncompliant DEFCONSTANT behavior involved
5963 calling functions which no longer exist, and because I also took the
5964 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5965 * fixed bug 1 (error handling before read-eval-print loop starts), and
5966 redid debugger restarts and related debugger commands somewhat while
5968 ** The QUIT debugger command is gone, since it did something
5969 rather different than the SB-EXT:QUIT command, and since it never
5970 worked properly outside the main toplevel read/eval/print loop.
5971 Invoking the new TOPLEVEL restart provides the same functionality.
5972 ** The GO debugger command is also gone, since you can just invoke
5973 the CONTINUE restart directly instead.
5974 ** The TOP debugger command is also gone, since it's redundant with the
5975 FRAME 0 command, and since it interfered with abbreviations for the
5977 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5979 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5980 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5981 some porting work by Martin Atzmueller)
5982 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5983 with a boatload of patches which he ported to SBCL. Now that those
5985 ** The system tries to make sure that its low-priority messages
5986 are prefixed by semicolons, to help people who like to use
5987 syntax highlighting in their ILISP buffer. (This patch
5988 was originally due to Raymond Toy.)
5989 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5990 patches originally written by Raymond Toy.
5991 ** The compiler understands coercion between single-value and
5992 multiple-VALUES type expressions better, getting rid of some very
5993 weird behavior, thanks to patches originally by Robert MacLachlan
5994 and Douglas Crosher.
5995 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5996 lambda lists, thanks to a patch originally by Pierre Mai.
5997 ** The system no longer bogusly warns about "abbreviated type
5999 ** The compiler gets less confused by inlining and RETURN-FROM,
6000 thanks to some patches originally by Tim Moore.
6001 ** The system no longer hangs when dumping circular lists to fasl
6002 files, thanks to a patch originally from Douglas Crosher.
6003 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
6004 undefined function error.
6005 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
6006 in structure slot initforms) for now, documented workaround instead:-|
6007 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
6008 * fixed bug 5: added stubs for various Gray stream functions called
6009 in the not-a-CL:STREAM case, so that even when Gray streams aren't
6010 installed, at least appropriate type errors are generated
6011 * fixed bug 8: better reporting of various PROGRAM-ERRORs
6012 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
6013 consistently in DEFMETHOD forms.
6014 * removed bug 21 from BUGS, since Martin Atzmueller points out that
6015 it doesn't seem to affect SBCL after all
6016 * The C runtime system now builds with better optimization and many
6017 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
6019 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
6021 * The system is now under CVS at SourceForge (instead of the
6022 CVS repository on my home machine).
6023 * The new signal handling code has been tweaked to treat register
6024 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
6025 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
6026 downstream, e.g. in debug-int.lisp, has implicit dependencies
6027 on the unsignedness of integer representation of machine words,
6028 and that caused the system to bomb out with infinite regress
6029 when trying to recover from type errors involving signed values,
6030 e.g. (BUTLAST '(1 2 3) -1).)
6031 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
6032 (This was one of the bugs Peter Van Eynde reported back in July.)
6033 * The system now uses code inspired by Colin Walters' O(N)
6034 implementation of MAP (from the cmucl-imp@cons.org mailing
6035 list, 2 September 2000) when it can't use a DEFTRANSFORM to
6036 inline the MAP operation, and there is more than one
6037 sequence argument to the MAP call (so that it can't just
6038 do ETYPECASE once and for all based on the type of the
6039 single sequence argument). (The old non-inline implementation
6040 of the general M-argument sequence-of-length-N case required
6041 O(M*N*N) time when any of the sequence arguments were LISTs.)
6042 * The QUIT :UNIX-CODE keyword argument has been renamed to
6043 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
6044 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
6046 * Raymond Wiker's patches to port dynamic loading from Linux to
6047 FreeBSD have been added.
6048 * The BUGS file is now more nearly up to date, thanks in large part
6049 to Martin Atzmueller's review of it.
6050 * The debugger now flushes standard output streams before it begins
6051 its output ("debugger invoked" and so forth).
6052 * The core version number and fasl file version number have both
6053 been incremented, because of incompatible changes in the layout
6055 * FINISH-OUTPUT is now called more consistently on QUIT. (It
6056 used to not be called for a saved Lisp image.)
6057 * Martin Atzmueller's version of a patch to fix a compiler crash,
6058 as posted on sbcl-devel 13 September 2000, has been installed.
6059 * Instead of installing Martin Atzmueller's patch for the
6060 compiler transform for SUBSEQ, I deleted the compiler transform,
6061 and transforms for some similar consing operations.
6062 * A bug in signal handling which kept TRACE from working on OpenBSD
6064 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
6065 away by constant folding
6066 * The system now defines its address space constants in one place
6067 (in the Lisp sources), and propagates them automatically elsewhere
6068 (through GENESIS and the sbcl.h file). Therefore, patching the
6069 address map is less unnecessarily tedious and error-prone. The
6070 Lisp names of address space constants have also been systematized.
6071 * CVS tags like dollar-Header-dollar have been removed from
6072 the sources, because they have never saved me trouble and
6073 they've been source of trouble working with patches and other
6074 diff-related operations.
6075 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
6076 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
6078 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
6080 * The system has been ported to OpenBSD.
6081 * The system now compiles with a simple "sh make.sh" on the systems
6082 that it's supported on. I.e., now you no longer need to tweak
6083 text in the target-features.lisp-expr and symlinks in src/runtime/
6084 by hand, the make.sh takes care of it for you.
6085 * The system is no longer so grossly inefficient when compiling code
6086 involving vectors implemented as general (not simple) vectors (VECTOR T),
6087 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
6088 which dares to use the various sequence functions on non-simple
6089 vectors, takes less of a performance hit.
6090 * There is now a primitive type predicate VECTOR-T-P
6091 to test for the (VECTOR T) type, so that e.g.
6092 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
6093 can now be compiled with some semblance of efficiency. (The old code
6094 turned the type declaration into a full call to %TYPEP at runtime!)
6095 * AREF on (VECTOR T) is still not fast, since it's still compiled
6096 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
6097 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
6098 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
6099 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
6100 without making full calls to SUBTYPEP at runtime.
6101 (Some analogous efficiency issues for non-simple vectors specialized to
6102 element types other than T, or for non-simple multidimensional arrays,
6103 have not been addressed. They could almost certainly be handled the
6104 same way if anyone is motivated to do so.)
6105 * The changes in array handling break binary compatibility, so
6106 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
6107 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
6108 instead of (VALUES T T).
6109 * By following the instructions that Dan Barlow posted to sbcl-devel
6110 on 2 July 2000, I was able to enable primitive dynamic object
6111 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
6112 functionality is not implemented (since it calls ld to resolve
6113 library references automatically, requiring RUN-PROGRAM for its
6114 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
6115 try to resolve library references) is now supported.
6116 * The system now flushes the standard output streams when it terminates,
6117 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
6118 them at several other probably-convenient times, e.g. in each pass of
6119 the toplevel read-eval-print loop, and after evaluating a form given
6120 as an "--eval" command-line option. (These changes were motivated by a
6121 discussion of stream flushing issues on cmucl-imp in August 2000.)
6122 * The source transform for TYPEP of array types no longer assumes
6123 that an array whose element type is a not-yet-defined type
6124 is implemented as an array of T, but instead punts, so that the
6125 type will be interpreted at runtime.
6126 * There is now some support for cross-compiling in make.sh: each of
6127 the phases of make.sh has its own script. (This should be transparent
6128 to people doing ordinary, non-cross-compile builds.)
6129 * Since my laptop doesn't have hundreds of megabytes of memory like
6130 my desktop machine, I became more motivated to do some items on
6131 my to-do list in order to reduce the size of the system a little:
6132 ** Arrange for various needed-only-at-cold-init things to be
6133 uninterned after cold init. To support this, those things have
6134 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
6135 symbols with such names are now uninterned after cold init).
6136 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
6137 fasl files for cold load.
6138 ** Remove the old compiler structure pooling code (which used to
6139 be conditional on the target feature :SB-ALLOC) completely.
6140 ** Redo the representation of some data in cold init to be more compact.
6141 (I also looked into supporting byte compiled code at bootstrap time,
6142 which would probably reduce the size of the system a lot, but that
6143 looked too complicated, so I punted for now.)
6144 * The maximum signal nesting depth in the src/runtime/ support code has
6145 been reduced from 4096 to 256. (I don't know any reason for the very
6146 large old value. If the new smaller value turns out to break something,
6147 I'll probably just bump it back up.)
6148 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
6150 * Many, many bugs reported by Peter Van Eynde have been added to
6151 the BUGS list; some have even been fixed.
6152 * While enabling dynamic object file loading, I tried to make the
6153 code easier to understand, renaming various functions and variables
6154 with less ambiguous names, and changing some function calling
6155 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
6156 * While trying to figure out how to do the OpenBSD port, I tried to
6157 clean up some of the code in src/runtime/. In particular, I dropped
6158 support for non-POSIX signal handling, added various comments,
6159 tweaked the code to reduce the number of compilation warnings, and
6160 renamed some files to increase consistency.
6161 * To support the new automatic configuration functionality in make.sh,
6162 the source file target-features.lisp-expr has been replaced with the
6163 source file base-target-features.lisp-expr and the machine-generated
6164 file local-target-features.lisp-expr.
6165 * fixed a stupid quoting error in make.sh so that using CMU CL
6166 "lisp -batch" as cross-compilation host works again
6168 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
6170 * DESCRIBE no longer tries to call itself recursively to describe
6171 bound/fbound values, so that it no longer fails on symbols which are
6172 bound to themselves (like keywords, T, and NIL).
6173 * DESCRIBE now works on generic functions.
6174 * The printer now prints less-screwed-up representations of closures
6175 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
6176 * A private symbol is used instead of the :EMPTY keyword previously
6177 used to mark empty slots in hash tables. Thus
6178 (DEFVAR *HT* (MAKE-HASH-TABLE))
6179 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
6180 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
6181 now does what ANSI says that it should. (You can still get
6182 similar noncompliant behavior if bang on the hash table
6183 implementation with all the symbols you get back from
6184 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
6185 This breaks binary compatibility, since tests for equality to
6186 :EMPTY are wired into things like the macroexpansion of
6187 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
6189 * There's now a minimal placeholder implementation for CL:STEP,
6190 as required by ANSI.
6191 * An obscure bug in the interaction of the normal compiler, the byte
6192 compiler, inlining, and structure predicates has been patched
6193 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
6194 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
6196 * Missing ordinary arguments in a macro call are now detected even
6197 when the macro lambda list contains &KEY or &REST.
6198 * The debugger no longer complains about encountering the top of the
6199 stack when you type "FRAME 0" to explicitly instruct it to go to
6200 the top of the stack. And it now prints the frame you request even
6201 if it's the current frame (instead of saying "You are here.").
6202 * As specified by ANSI, the system now always prints keywords
6203 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
6205 * The default initial SIZE of HASH-TABLEs is now smaller.
6206 * Type information from CLOS class dispatch is now propagated
6207 into DEFMETHOD bodies, so that e.g.
6208 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6210 is now basically equivalent to
6211 (DEFMETHOD FOO ((X SINGLE-FLOAT))
6212 (DECLARE (TYPE SINGLE-FLOAT X))
6214 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
6215 operation, without having to do run-time type dispatch.
6216 * The macroexpansion of DEFMETHOD has been tweaked so that it has
6217 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
6218 * Since I don't seem to be making big file reorganizations very often
6219 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
6220 is overflowing my ability to conveniently back them up), I've finally
6221 checked the system into CVS. (The CVS repository is on my home system,
6222 not at SourceForge -- putting it on SourceForge might come later.)
6223 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
6224 high-level GC-NOTIFY-FOO functions send their output. (There's
6225 still very little control of where low-level verbose GC functions
6226 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
6227 less than it used to -- the GC-NOTIFY-FOO functions are now under
6228 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
6229 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
6230 in only one place in the source code, and propagates it automatically
6231 everywhere that it's needed. Thus e.g. when I bump the version from
6232 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
6233 * The C source files now include boilerplate legalese and documentation
6234 at the head of each file (just as the Lisp source files already did).
6235 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
6236 to his page will be replaced with a link to his new CLiki service.
6238 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
6240 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
6241 * The build process now looks for GNU make under the default name "gmake",
6242 instead of "make" as it used to. If GNU make is not available as "gmake"
6243 on your system, you can change this default behavior by setting the
6244 GNUMAKE environment variable.
6245 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
6246 can build without error under CMU CL.
6248 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
6250 * There is now a partial SBCL user manual (with some new text and some
6251 text cribbed from the CMU CL manual).
6252 * The beginnings of a profiler have been added (starting with the
6253 CMU CL profiler and simplifying and cleaning up). Eventually the
6254 main interface should be through the TRACE macro, but for now,
6255 it's still accessed through vaguely CMU-CL-style functions and macros
6256 exported from the package SB-PROFILE.
6257 * Some problems left over from porting CMU CL to the new
6258 cross-compilation bootstrap process have been cleaned up:
6259 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
6260 instead of SB!XC:DEFMACRO, compounded by an oversight on my
6261 part when getting rid of the compiler *BACKEND* stuff.)
6262 ** The value of *NULL-TYPE* was screwed up, because it was
6263 being initialized before the type system knew the final
6264 definition of the 'NULL type. This screwed up several key
6265 optimizations in the compiler, causing inefficiency in all sorts
6266 of places. (I found it because I wanted to understand why
6267 GET-INTERNAL-RUN-TIME was consing.)
6268 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
6269 PROCLAIM FTYPE information. Unfortunately this broke binary
6270 compatibility again, since now the forms output by DEFGENERIC
6271 to refer to functions which didn't exist in 0.6.3.
6272 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
6273 can use the new (as of 0.6.3) transform for SOME into MAP into
6275 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
6276 values to (INTEGER 0 1000000), so that the time code will no longer
6277 occasionally get blown up by Linux returning 1000000 microseconds
6278 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
6279 its output conform to the ANSI spec. (Alas, this makes its output
6280 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
6281 * A full call to MAP NIL with a single sequence argument no longer conses.
6282 * fixes to problems pointed out by Martin Atzmueller:
6283 * The manual page no longer talks about multiprocessing as though
6284 it were currently supported.
6285 * The ILISP support patches have been removed from the distribution,
6286 because as of version 5.10.1, ILISP now supports SBCL without us
6287 having to maintain patches.
6288 * added a modified version of Raymond Toy's recent CMU CL patch for
6289 EQUALP comparison of HASH-TABLE
6291 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
6293 * The system still can't cross-compile itself with
6294 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
6295 entails), but at least it can compile more of itself that way
6296 than it used to be able to, and various buglets which were uncovered
6297 by trying to cross-compile itself that way have now been fixed.
6298 * This release breaks binary compatibility again. This time
6299 at least I've incremented the FASL file format version to 2, so that the
6300 problem can be detected reliably instead of just causing weird errors.
6301 * various new style warnings:
6302 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
6303 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
6304 ** using the lexical binding of a variable named in the *FOO* style
6305 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
6306 as specified by ANSI.
6307 * *RANDOM-STATE* is no longer automatically initialized from
6308 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
6309 default behavior of the system is to repeat its behavior every time
6310 it's run. If you'd like to change this behavior, you can always
6311 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
6312 old convention there was no comparably easy way to get the system to
6313 repeat its behavior every time it was run.
6314 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
6315 FTYPE declarations has been removed, in favor of their ANSI
6316 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
6317 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
6318 the types of their sequence arguments can be determined at compile time.
6319 This is done through a new open code expansion for MAP which eliminates
6320 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
6321 argument types can be determined at compile time.
6322 * The optimizer now transforms COERCE into an identity operation when it
6323 can prove that the coerced object is already of the correct type. (This
6324 can be a win for machine generated code, including the output of other
6325 optimization transforms, such as the MAP transform above.)
6326 * Credit information has been moved from source file headers into CREDITS.
6327 * Source file headers have been made more standard.
6328 * The CASE macro now compiles without complaining even when it has
6331 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
6333 * (Note that the way that the PCL macroexpansions were rewritten
6334 to accommodate the change in DEFGENERIC below breaks binary
6335 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
6336 not run under sbcl-0.6.2. Once we get out of alpha releases,
6337 i.e. hit release 1.0.0, we'll probably try to maintain binary
6338 compatibility between maintenance releases, e.g. between sbcl-1.4.3
6339 and sbcl-1.4.4. Until then, however, it might be fairly common
6340 for maintenance releases to break binary compatibility.)
6341 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
6343 * The reporting of unhandled signals has been changed to print some
6344 explanatory text as well as the report form. (Previously only
6345 the report form was printed.)
6346 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
6347 it defines, so that the compiler no longer issues undefined function
6348 warnings for compiled-but-not-yet-loaded generic functions.
6349 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
6350 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
6351 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
6352 section of the ANSI spec are supported.
6353 * The "" nickname for the "KEYWORD" package has been removed.
6354 The reader still handles symbol tokens which begin with a package marker
6355 as keywords, but it doesn't expose its mechanism for doing so in the
6356 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
6357 * The system now issues STYLE-WARNINGs for contradictory TYPE
6358 proclamations. (Warnings for contradictory FTYPE proclamations would
6359 be nice too, but those can't be done usefully unless the type system
6360 is made smarter about FUNCTION types.)
6361 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
6362 systematized, so that "*target-*.lisp is supposed to exist only on the
6363 target and imply that there's a related file which exists on the
6364 host, and *host-*.lisp is supposed to exist only on the host and imply
6365 that there's a related file which exists on the target. This involves a
6366 lot of renaming. Hopefully the acute confusion caused by the renaming
6367 will be justified by the reduction in chronic confusion..
6368 ** runtime-type.lisp -> early-target-type.lisp
6369 ** target-type.lisp -> late-target-type.lisp
6370 ** early-host-format.lisp -> early-format.lisp
6371 ** late-host-format.lisp -> late-format.lisp
6372 ** host-error.lisp -> misc-error.lisp
6373 ** early-error.lisp -> early-target-error.lisp
6374 ** late-error.lisp -> late-target-error.lisp
6375 ** host-defboot.lisp -> early-defboot.lisp
6376 ** code/misc.lisp -> code/target-misc.lisp
6377 ** code/host-misc.lisp -> code/misc.lisp
6378 ** code/numbers.lisp -> code/target-numbers.lisp
6379 ** code/early-numbers.lisp -> numbers.lisp
6380 ** early-host-type.lisp -> early-type.lisp
6381 ** late-host-type.lisp -> late-type.lisp
6382 ** host-typep.lisp -> typep.lisp
6383 ** load.lisp -> target-load.lisp
6384 ** host-load.lisp -> load.lisp
6385 ** host-disassem.lisp -> disassem.lisp
6386 ** host-insts.lisp -> insts.lisp
6387 ** byte-comp.lisp -> target-byte-comp.lisp
6388 ** host-byte-comp.lisp -> byte-comp.lisp
6389 ** host-signal.lisp -> signal.lisp
6390 ** host-defstruct.lisp -> defstruct.lisp
6391 ** late-target-type.lisp -> deftypes-for-target.lisp
6392 Furthermore, several other previously target-only files foo.lisp (e.g.
6393 hash-table.lisp and random.lisp) have been split into a target-and-host
6394 foo.lisp file and a target-only target-foo.lisp file, with their key type
6395 definitions in the target-and-host part, so that the cross-compiler will
6396 know more about target types.
6397 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
6398 gone away. In their place are various *BACKEND-FOO* variables
6399 corresponding to the slots of the old structure.
6400 * A bug which caused the SB-COLD bootstrap-time package to be propagated
6401 into the target SBCL has been fixed.
6402 * The chill.lisp system for loading cold code into a running SBCL
6404 * Support for the CMU CL "scavenger hook" extension has been removed.
6405 (It was undocumented and unused in the CMU CL sources that SBCL was
6406 derived from, and stale in sbcl-0.6.1.)
6407 * Various errors in the cross-compiler type system were detected
6408 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
6409 (enabling various consistency checks). Many of them were fixed,
6410 but some hard problems remain, so the compiler is back to
6411 running without *TYPE-SYSTEM-INITIALIZED* for now.
6412 * As part of the cross-compiler type system cleanup, I implemented
6413 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
6414 * I have started adding UNCROSS calls throughout the type system
6415 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
6416 on cross-compiler input files will be able to go away, and various
6418 * CONSTANTP now returns true for quoted forms (as explicitly required
6421 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
6423 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
6424 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
6425 (MAKE-LIST -1). In the longer term, it ought to become true
6426 that declarations are assertions even at SAFETY 1. For now, it's not
6427 quite true even at SAFETY 3, but it's at least more nearly true..
6428 (Note that this change seems to increases the size of the system by
6429 O(5%) and to decrease the speed of the compiler by 20% or more.)
6430 * changed ALIEN printing to be much more abbreviated, as a short-term fix
6431 for the problem of printing dozens of lines of distracting information
6432 about low-level system machinery as part of the top stack frame
6433 on entry to the debugger when an undefined function was called.
6434 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
6435 is not reset to COMMON-LISP-USER.
6436 * Compilation of stuff related to dyncount.lisp has been made conditional
6437 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
6438 smaller. The various dyncount-related symbols have been moved into
6439 a new "SB-DYNCOUNT" package.
6440 * tty-inspect.lisp has been renamed to inspect.lisp.
6441 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
6442 feature has gone away. (When we eventually port to other flavors of
6443 libc and/or Unix, we'll try to make the differences between flavors
6444 invisible at the user level.)
6445 * Various other *FEATURES* tags, and/or their associated conditionals,
6446 have been removed if obsolescent, or given better documentation, or
6447 sometimes given more-mnemonic names.
6449 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
6451 * tidied up "make.sh" script
6452 * tidied up system directory structure
6453 * better "clean.sh" behavior
6454 * added doc/FOR-CMUCL-DEVELOPERS
6455 * many many small tweaks to output format, e.g. removing possibly-confusing
6456 trailing #\. character in DESCRIBE-INSTANCE
6457 * (EQUALP #\A 'A) no longer signals an error.
6458 * new hashing code, including EQUALP hashing
6459 * tidied up Lisp initialization and toplevel
6460 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
6461 * command line argument processing
6462 * added POSIX-GETENV function to deal with Unix-ish environment variables
6463 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
6464 terminating SBCL on EOF
6465 * non-verbose GC by default
6466 * There is no more "sbcl" shell script; the sbcl file is now the C
6467 runtime executable (just like CMU CL).
6468 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
6470 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
6471 symbol and package information as Lisp native symbol and package objects
6472 instead of strings naming symbols and strings naming packages. This way,
6473 whenever packages are renamed (as in warm init), debug information is
6474 transformed along with everything else.
6475 * tweaked the optimization policy declarations which control the building
6476 of SBCL itself. Now, among other things, the system no longer saves
6477 source location debugging information. (This helps two problems at once
6478 by reducing SBCL size and by keeping SBCL from trying to look for its
6479 sources -- which may not exist -- when reporting errors.)
6480 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
6481 debugging and testing purposes
6482 * cleaned up printing, making the printer call PRINT-OBJECT for
6483 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
6484 methods, giving nearly-ANSI behavior
6485 * converted almost all special variables to use *FOO* naming convention
6486 * deleted PARSE-TIME functionality, since it can be done portably
6487 * moved some files out of cold init into warm init
6488 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
6490 * regularized formatting of source files
6491 * added an install.sh script
6492 * fixed ridiculous memory usage of cross-compiler by making
6493 compiler/alloc.lisp not try to do pooling unless it can hook
6494 itself into the GC of the cross-compilation host. Now the system
6495 builds nicely on my old laptop.
6496 * added :SB-ALLOC in target-features.lisp-expr
6497 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
6498 was not implemented)
6499 * re-did condition handling and note reporting in the compiler. Notes
6500 are no longer handled by signalling conditions. Style warnings
6501 and warnings are handled more correctly and reported in such a way
6502 that it's easy to find one or the other in your output (so that you
6503 can e.g. figure out which of many problems caused COMPILE-FILE to
6505 * changed the severity of several compiler warnings from full WARNING
6506 to STYLE-WARNING in order to conform with the ANSI spec; also changed
6507 compiler note reporting so that it doesn't use the condition system
6508 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
6509 COMPILE-FILE command)
6510 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
6511 function. As a consequence, START-BLOCK and END-BLOCK declarations are
6512 no longer supported, since their implementation was deeply intertwingled
6513 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
6514 * removed bogus "support" for compiler macros named (SETF FOO), and
6515 removed the compiler macro for SETF INFO (but only after making a fool
6516 of myself on the cmucl-imp mailing list by posting a bogus patch for
6517 DEFINE-COMPILER-MACRO..)
6518 * Compiled files containing forms which have side effects on the Lisp
6519 reader (such as DEFPACKAGE forms) are now handled more correctly.
6520 (Compiler queuing of top level lambdas has been suppressed by setting
6521 *TOP-LEVEL-LAMBDA-MAX* to 0. )
6522 * deleted various currently-unused source files, e.g. gengc.lisp. They
6523 may be added back at some point e.g. when porting to other architectures,
6524 but until they are it's distracting to distribute them and to try to
6526 * deleted "UNCROSS couldn't recurse through.." style warnings, since
6527 there were so many of them they're just distractions, and UNCROSS is
6528 known to be able to handle the current sources
6529 * moved PROFILE functionality into TRACE, so that it will be clear
6530 how the wrapping and unwrapping of functions when you profile them
6531 interacts with the wrapping and unwrapping of functions when you
6532 trace them. (Actually, the functionality isn't there yet, but at least
6533 the interface specification is there. Hopefully, the functionality will
6534 arrive with some future maintenance release.)
6535 * removed host-oops.lisp
6536 * changed signature of QUIT function to allow UNIX-CODE argument
6537 * fixed READ-SEQUENCE bug
6538 * tweaked verbose GC output so that it looks more like the progress
6539 output that ANSI specifies for functions like LOAD
6540 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
6541 * added <http://sbcl.sourceforge.com> to the banner information printed by
projects / sbcl.git / blob